Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc: (68 commits)
  sdio_uart: Fix SDIO break control to now return success or an error
  mmc: host driver for Ricoh Bay1Controllers
  sdio: sdio_io.c Fix sparse warnings
  sdio: fix the use of hard coded timeout value.
  mmc: OLPC: update vdd/powerup quirk comment
  mmc: fix spares errors of sdhci.c
  mmc: remove multiwrite capability
  wbsd: fix bad dma_addr_t conversion
  atmel-mci: Driver for Atmel on-chip MMC controllers
  mmc: fix sdio_io sparse errors
  mmc: wbsd.c fix shadowing of 'dma' variable
  MMC: S3C24XX: Refuse incorrectly aligned transfers
  MMC: S3C24XX: Add maintainer entry
  MMC: S3C24XX: Update error debugging.
  MMC: S3C24XX: Add media presence test to request handling.
  MMC: S3C24XX: Fix use of msecs where jiffies are needed
  MMC: S3C24XX: Add MODULE_ALIAS() entries for the platform devices
  MMC: S3C24XX: Fix s3c2410_dma_request() return code check.
  MMC: S3C24XX: Allow card-detect on non-IRQ capable pin
  MMC: S3C24XX: Ensure host->mrq->data is valid
  ...

Manually fixed up bogus executable bits on drivers/mmc/core/sdio_io.c
and include/linux/mmc/sdio_func.h when merging.

29 files changed, 5896 insertions, 1286 deletions

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index f9ad960d7c1a..66e5a5487c20 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -2,7 +2,7 @@
  * Block driver for media (i.e., flash cards)
  *
  * Copyright 2002 Hewlett-Packard Company
- * Copyright 2005-2007 Pierre Ossman
+ * Copyright 2005-2008 Pierre Ossman
  *
  * Use consistent with the GNU GPL is permitted,
  * provided that this copyright notice is
@@ -237,17 +237,6 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
                 if (brq.data.blocks > card->host->max_blk_count)
                         brq.data.blocks = card->host->max_blk_count;
 
-                /*
-                 * If the host doesn't support multiple block writes, force
-                 * block writes to single block. SD cards are excepted from
-                 * this rule as they support querying the number of
-                 * successfully written sectors.
-                 */
-                if (rq_data_dir(req) != READ &&
-                    !(card->host->caps & MMC_CAP_MULTIWRITE) &&
-                    !mmc_card_sd(card))
-                        brq.data.blocks = 1;
-
                 if (brq.data.blocks > 1) {
                         /* SPI multiblock writes terminate using a special
                          * token, not a STOP_TRANSMISSION request.
@@ -296,22 +285,24 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
 
                 mmc_queue_bounce_post(mq);
 
+                /*
+                 * Check for errors here, but don't jump to cmd_err
+                 * until later as we need to wait for the card to leave
+                 * programming mode even when things go wrong.
+                 */
                 if (brq.cmd.error) {
                         printk(KERN_ERR "%s: error %d sending read/write command\n",
                                req->rq_disk->disk_name, brq.cmd.error);
-                        goto cmd_err;
                 }
 
                 if (brq.data.error) {
                         printk(KERN_ERR "%s: error %d transferring data\n",
                                req->rq_disk->disk_name, brq.data.error);
-                        goto cmd_err;
                 }
 
                 if (brq.stop.error) {
                         printk(KERN_ERR "%s: error %d sending stop command\n",
                                req->rq_disk->disk_name, brq.stop.error);
-                        goto cmd_err;
                 }
 
                 if (!mmc_host_is_spi(card->host) && rq_data_dir(req) != READ) {
@@ -344,6 +335,9 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
 #endif
                 }
 
+                if (brq.cmd.error || brq.data.error || brq.stop.error)
+                        goto cmd_err;
+
                 /*
                  * A block was successfully transferred.
                  */
@@ -362,30 +356,32 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
          * mark the known good sectors as ok.
          *
          * If the card is not SD, we can still ok written sectors
-         * if the controller can do proper error reporting.
+         * as reported by the controller (which might be less than
+         * the real number of written sectors, but never more).
          *
          * For reads we just fail the entire chunk as that should
          * be safe in all cases.
          */
-        if (rq_data_dir(req) != READ && mmc_card_sd(card)) {
-                u32 blocks;
-                unsigned int bytes;
-
-                blocks = mmc_sd_num_wr_blocks(card);
-                if (blocks != (u32)-1) {
-                        if (card->csd.write_partial)
-                                bytes = blocks << md->block_bits;
-                        else
-                                bytes = blocks << 9;
+        if (rq_data_dir(req) != READ) {
+                if (mmc_card_sd(card)) {
+                        u32 blocks;
+                        unsigned int bytes;
+
+                        blocks = mmc_sd_num_wr_blocks(card);
+                        if (blocks != (u32)-1) {
+                                if (card->csd.write_partial)
+                                        bytes = blocks << md->block_bits;
+                                else
+                                        bytes = blocks << 9;
+                                spin_lock_irq(&md->lock);
+                                ret = __blk_end_request(req, 0, bytes);
+                                spin_unlock_irq(&md->lock);
+                        }
+                } else {
                         spin_lock_irq(&md->lock);
-                        ret = __blk_end_request(req, 0, bytes);
+                        ret = __blk_end_request(req, 0, brq.data.bytes_xfered);
                         spin_unlock_irq(&md->lock);
                 }
-        } else if (rq_data_dir(req) != READ &&
-                   (card->host->caps & MMC_CAP_MULTIWRITE)) {
-                spin_lock_irq(&md->lock);
-                ret = __blk_end_request(req, 0, brq.data.bytes_xfered);
-                spin_unlock_irq(&md->lock);
         }
 
         mmc_release_host(card->host);
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
index ffadee549a41..d6b9b486417c 100644
--- a/drivers/mmc/card/mmc_test.c
+++ b/drivers/mmc/card/mmc_test.c
@@ -1,7 +1,7 @@
 /*
  *  linux/drivers/mmc/card/mmc_test.c
  *
- *  Copyright 2007 Pierre Ossman
+ *  Copyright 2007-2008 Pierre Ossman
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -26,13 +26,17 @@
 struct mmc_test_card {
         struct mmc_card *card;
 
+        u8              scratch[BUFFER_SIZE];
         u8              *buffer;
 };
 
 /*******************************************************************/
-/*  Helper functions                                               */
+/*  General helper functions                                       */
 /*******************************************************************/
 
+/*
+ * Configure correct block size in card
+ */
 static int mmc_test_set_blksize(struct mmc_test_card *test, unsigned size)
 {
         struct mmc_command cmd;
@@ -48,117 +52,61 @@ static int mmc_test_set_blksize(struct mmc_test_card *test, unsigned size)
         return 0;
 }
 
-static int __mmc_test_transfer(struct mmc_test_card *test, int write,
-        unsigned broken_xfer, u8 *buffer, unsigned addr,
-        unsigned blocks, unsigned blksz)
+/*
+ * Fill in the mmc_request structure given a set of transfer parameters.
+ */
+static void mmc_test_prepare_mrq(struct mmc_test_card *test,
+        struct mmc_request *mrq, struct scatterlist *sg, unsigned sg_len,
+        unsigned dev_addr, unsigned blocks, unsigned blksz, int write)
 {
-        int ret, busy;
-
-        struct mmc_request mrq;
-        struct mmc_command cmd;
-        struct mmc_command stop;
-        struct mmc_data data;
-
-        struct scatterlist sg;
-
-        memset(&mrq, 0, sizeof(struct mmc_request));
-
-        mrq.cmd = &cmd;
-        mrq.data = &data;
-
-        memset(&cmd, 0, sizeof(struct mmc_command));
+        BUG_ON(!mrq || !mrq->cmd || !mrq->data || !mrq->stop);
 
-        if (broken_xfer) {
-                if (blocks > 1) {
-                        cmd.opcode = write ?
-                                MMC_WRITE_BLOCK : MMC_READ_SINGLE_BLOCK;
-                } else {
-                        cmd.opcode = MMC_SEND_STATUS;
-                }
+        if (blocks > 1) {
+                mrq->cmd->opcode = write ?
+                        MMC_WRITE_MULTIPLE_BLOCK : MMC_READ_MULTIPLE_BLOCK;
         } else {
-                if (blocks > 1) {
-                        cmd.opcode = write ?
-                                MMC_WRITE_MULTIPLE_BLOCK : MMC_READ_MULTIPLE_BLOCK;
-                } else {
-                        cmd.opcode = write ?
-                                MMC_WRITE_BLOCK : MMC_READ_SINGLE_BLOCK;
-                }
+                mrq->cmd->opcode = write ?
+                        MMC_WRITE_BLOCK : MMC_READ_SINGLE_BLOCK;
         }
 
-        if (broken_xfer && blocks == 1)
-                cmd.arg = test->card->rca << 16;
-        else
-                cmd.arg = addr;
-        cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
+        mrq->cmd->arg = dev_addr;
+        mrq->cmd->flags = MMC_RSP_R1 | MMC_CMD_ADTC;
 
-        memset(&stop, 0, sizeof(struct mmc_command));
-
-        if (!broken_xfer && (blocks > 1)) {
-                stop.opcode = MMC_STOP_TRANSMISSION;
-                stop.arg = 0;
-                stop.flags = MMC_RSP_R1B | MMC_CMD_AC;
-
-                mrq.stop = &stop;
+        if (blocks == 1)
+                mrq->stop = NULL;
+        else {
+                mrq->stop->opcode = MMC_STOP_TRANSMISSION;
+                mrq->stop->arg = 0;
+                mrq->stop->flags = MMC_RSP_R1B | MMC_CMD_AC;
         }
 
-        memset(&data, 0, sizeof(struct mmc_data));
-
-        data.blksz = blksz;
-        data.blocks = blocks;
-        data.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
-        data.sg = &sg;
-        data.sg_len = 1;
-
-        sg_init_one(&sg, buffer, blocks * blksz);
-
-        mmc_set_data_timeout(&data, test->card);
+        mrq->data->blksz = blksz;
+        mrq->data->blocks = blocks;
+        mrq->data->flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
+        mrq->data->sg = sg;
+        mrq->data->sg_len = sg_len;
 
-        mmc_wait_for_req(test->card->host, &mrq);
-
-        ret = 0;
-
-        if (broken_xfer) {
-                if (!ret && cmd.error)
-                        ret = cmd.error;
-                if (!ret && data.error == 0)
-                        ret = RESULT_FAIL;
-                if (!ret && data.error != -ETIMEDOUT)
-                        ret = data.error;
-                if (!ret && stop.error)
-                        ret = stop.error;
-                if (blocks > 1) {
-                        if (!ret && data.bytes_xfered > blksz)
-                                ret = RESULT_FAIL;
-                } else {
-                        if (!ret && data.bytes_xfered > 0)
-                                ret = RESULT_FAIL;
-                }
-        } else {
-                if (!ret && cmd.error)
-                        ret = cmd.error;
-                if (!ret && data.error)
-                        ret = data.error;
-                if (!ret && stop.error)
-                        ret = stop.error;
-                if (!ret && data.bytes_xfered != blocks * blksz)
-                        ret = RESULT_FAIL;
-        }
+        mmc_set_data_timeout(mrq->data, test->card);
+}
 
-        if (ret == -EINVAL)
-                ret = RESULT_UNSUP_HOST;
+/*
+ * Wait for the card to finish the busy state
+ */
+static int mmc_test_wait_busy(struct mmc_test_card *test)
+{
+        int ret, busy;
+        struct mmc_command cmd;
 
         busy = 0;
         do {
-                int ret2;
-
                 memset(&cmd, 0, sizeof(struct mmc_command));
 
                 cmd.opcode = MMC_SEND_STATUS;
                 cmd.arg = test->card->rca << 16;
                 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
 
-                ret2 = mmc_wait_for_cmd(test->card->host, &cmd, 0);
-                if (ret2)
+                ret = mmc_wait_for_cmd(test->card->host, &cmd, 0);
+                if (ret)
                         break;
 
                 if (!busy && !(cmd.resp[0] & R1_READY_FOR_DATA)) {
@@ -172,14 +120,57 @@ static int __mmc_test_transfer(struct mmc_test_card *test, int write,
         return ret;
 }
 
-static int mmc_test_transfer(struct mmc_test_card *test, int write,
-        u8 *buffer, unsigned addr, unsigned blocks, unsigned blksz)
+/*
+ * Transfer a single sector of kernel addressable data
+ */
+static int mmc_test_buffer_transfer(struct mmc_test_card *test,
+        u8 *buffer, unsigned addr, unsigned blksz, int write)
 {
-        return __mmc_test_transfer(test, write, 0, buffer,
-                        addr, blocks, blksz);
+        int ret;
+
+        struct mmc_request mrq;
+        struct mmc_command cmd;
+        struct mmc_command stop;
+        struct mmc_data data;
+
+        struct scatterlist sg;
+
+        memset(&mrq, 0, sizeof(struct mmc_request));
+        memset(&cmd, 0, sizeof(struct mmc_command));
+        memset(&data, 0, sizeof(struct mmc_data));
+        memset(&stop, 0, sizeof(struct mmc_command));
+
+        mrq.cmd = &cmd;
+        mrq.data = &data;
+        mrq.stop = &stop;
+
+        sg_init_one(&sg, buffer, blksz);
+
+        mmc_test_prepare_mrq(test, &mrq, &sg, 1, addr, 1, blksz, write);
+
+        mmc_wait_for_req(test->card->host, &mrq);
+
+        if (cmd.error)
+                return cmd.error;
+        if (data.error)
+                return data.error;
+
+        ret = mmc_test_wait_busy(test);
+        if (ret)
+                return ret;
+
+        return 0;
 }
 
-static int mmc_test_prepare_verify(struct mmc_test_card *test, int write)
+/*******************************************************************/
+/*  Test preparation and cleanup                                   */
+/*******************************************************************/
+
+/*
+ * Fill the first couple of sectors of the card with known data
+ * so that bad reads/writes can be detected
+ */
+static int __mmc_test_prepare(struct mmc_test_card *test, int write)
 {
         int ret, i;
 
@@ -188,15 +179,14 @@ static int mmc_test_prepare_verify(struct mmc_test_card *test, int write)
                 return ret;
 
         if (write)
-                memset(test->buffer, 0xDF, BUFFER_SIZE);
+                memset(test->buffer, 0xDF, 512);
         else {
-                for (i = 0;i < BUFFER_SIZE;i++)
+                for (i = 0;i < 512;i++)
                         test->buffer[i] = i;
         }
 
         for (i = 0;i < BUFFER_SIZE / 512;i++) {
-                ret = mmc_test_transfer(test, 1, test->buffer + i * 512,
-                        i * 512, 1, 512);
+                ret = mmc_test_buffer_transfer(test, test->buffer, i * 512, 512, 1);
                 if (ret)
                         return ret;
         }
@@ -204,41 +194,218 @@ static int mmc_test_prepare_verify(struct mmc_test_card *test, int write)
         return 0;
 }
 
-static int mmc_test_prepare_verify_write(struct mmc_test_card *test)
+static int mmc_test_prepare_write(struct mmc_test_card *test)
+{
+        return __mmc_test_prepare(test, 1);
+}
+
+static int mmc_test_prepare_read(struct mmc_test_card *test)
+{
+        return __mmc_test_prepare(test, 0);
+}
+
+static int mmc_test_cleanup(struct mmc_test_card *test)
 {
-        return mmc_test_prepare_verify(test, 1);
+        int ret, i;
+
+        ret = mmc_test_set_blksize(test, 512);
+        if (ret)
+                return ret;
+
+        memset(test->buffer, 0, 512);
+
+        for (i = 0;i < BUFFER_SIZE / 512;i++) {
+                ret = mmc_test_buffer_transfer(test, test->buffer, i * 512, 512, 1);
+                if (ret)
+                        return ret;
+        }
+
+        return 0;
 }
 
-static int mmc_test_prepare_verify_read(struct mmc_test_card *test)
+/*******************************************************************/
+/*  Test execution helpers                                         */
+/*******************************************************************/
+
+/*
+ * Modifies the mmc_request to perform the "short transfer" tests
+ */
+static void mmc_test_prepare_broken_mrq(struct mmc_test_card *test,
+        struct mmc_request *mrq, int write)
 {
-        return mmc_test_prepare_verify(test, 0);
+        BUG_ON(!mrq || !mrq->cmd || !mrq->data);
+
+        if (mrq->data->blocks > 1) {
+                mrq->cmd->opcode = write ?
+                        MMC_WRITE_BLOCK : MMC_READ_SINGLE_BLOCK;
+                mrq->stop = NULL;
+        } else {
+                mrq->cmd->opcode = MMC_SEND_STATUS;
+                mrq->cmd->arg = test->card->rca << 16;
+        }
 }
 
-static int mmc_test_verified_transfer(struct mmc_test_card *test, int write,
-        u8 *buffer, unsigned addr, unsigned blocks, unsigned blksz)
+/*
+ * Checks that a normal transfer didn't have any errors
+ */
+static int mmc_test_check_result(struct mmc_test_card *test,
+        struct mmc_request *mrq)
 {
-        int ret, i, sectors;
+        int ret;
 
-        /*
-         * It is assumed that the above preparation has been done.
-         */
+        BUG_ON(!mrq || !mrq->cmd || !mrq->data);
+
+        ret = 0;
 
-        memset(test->buffer, 0, BUFFER_SIZE);
+        if (!ret && mrq->cmd->error)
+                ret = mrq->cmd->error;
+        if (!ret && mrq->data->error)
+                ret = mrq->data->error;
+        if (!ret && mrq->stop && mrq->stop->error)
+                ret = mrq->stop->error;
+        if (!ret && mrq->data->bytes_xfered !=
+                mrq->data->blocks * mrq->data->blksz)
+                ret = RESULT_FAIL;
+
+        if (ret == -EINVAL)
+                ret = RESULT_UNSUP_HOST;
+
+        return ret;
+}
+
+/*
+ * Checks that a "short transfer" behaved as expected
+ */
+static int mmc_test_check_broken_result(struct mmc_test_card *test,
+        struct mmc_request *mrq)
+{
+        int ret;
+
+        BUG_ON(!mrq || !mrq->cmd || !mrq->data);
+
+        ret = 0;
+
+        if (!ret && mrq->cmd->error)
+                ret = mrq->cmd->error;
+        if (!ret && mrq->data->error == 0)
+                ret = RESULT_FAIL;
+        if (!ret && mrq->data->error != -ETIMEDOUT)
+                ret = mrq->data->error;
+        if (!ret && mrq->stop && mrq->stop->error)
+                ret = mrq->stop->error;
+        if (mrq->data->blocks > 1) {
+                if (!ret && mrq->data->bytes_xfered > mrq->data->blksz)
+                        ret = RESULT_FAIL;
+        } else {
+                if (!ret && mrq->data->bytes_xfered > 0)
+                        ret = RESULT_FAIL;
+        }
+
+        if (ret == -EINVAL)
+                ret = RESULT_UNSUP_HOST;
+
+        return ret;
+}
+
+/*
+ * Tests a basic transfer with certain parameters
+ */
+static int mmc_test_simple_transfer(struct mmc_test_card *test,
+        struct scatterlist *sg, unsigned sg_len, unsigned dev_addr,
+        unsigned blocks, unsigned blksz, int write)
+{
+        struct mmc_request mrq;
+        struct mmc_command cmd;
+        struct mmc_command stop;
+        struct mmc_data data;
+
+        memset(&mrq, 0, sizeof(struct mmc_request));
+        memset(&cmd, 0, sizeof(struct mmc_command));
+        memset(&data, 0, sizeof(struct mmc_data));
+        memset(&stop, 0, sizeof(struct mmc_command));
+
+        mrq.cmd = &cmd;
+        mrq.data = &data;
+        mrq.stop = &stop;
+
+        mmc_test_prepare_mrq(test, &mrq, sg, sg_len, dev_addr,
+                blocks, blksz, write);
+
+        mmc_wait_for_req(test->card->host, &mrq);
+
+        mmc_test_wait_busy(test);
+
+        return mmc_test_check_result(test, &mrq);
+}
+
+/*
+ * Tests a transfer where the card will fail completely or partly
+ */
+static int mmc_test_broken_transfer(struct mmc_test_card *test,
+        unsigned blocks, unsigned blksz, int write)
+{
+        struct mmc_request mrq;
+        struct mmc_command cmd;
+        struct mmc_command stop;
+        struct mmc_data data;
+
+        struct scatterlist sg;
+
+        memset(&mrq, 0, sizeof(struct mmc_request));
+        memset(&cmd, 0, sizeof(struct mmc_command));
+        memset(&data, 0, sizeof(struct mmc_data));
+        memset(&stop, 0, sizeof(struct mmc_command));
+
+        mrq.cmd = &cmd;
+        mrq.data = &data;
+        mrq.stop = &stop;
+
+        sg_init_one(&sg, test->buffer, blocks * blksz);
+
+        mmc_test_prepare_mrq(test, &mrq, &sg, 1, 0, blocks, blksz, write);
+        mmc_test_prepare_broken_mrq(test, &mrq, write);
+
+        mmc_wait_for_req(test->card->host, &mrq);
+
+        mmc_test_wait_busy(test);
+
+        return mmc_test_check_broken_result(test, &mrq);
+}
+
+/*
+ * Does a complete transfer test where data is also validated
+ *
+ * Note: mmc_test_prepare() must have been done before this call
+ */
+static int mmc_test_transfer(struct mmc_test_card *test,
+        struct scatterlist *sg, unsigned sg_len, unsigned dev_addr,
+        unsigned blocks, unsigned blksz, int write)
+{
+        int ret, i;
+        unsigned long flags;
 
         if (write) {
                 for (i = 0;i < blocks * blksz;i++)
-                        buffer[i] = i;
+                        test->scratch[i] = i;
+        } else {
+                memset(test->scratch, 0, BUFFER_SIZE);
         }
+        local_irq_save(flags);
+        sg_copy_from_buffer(sg, sg_len, test->scratch, BUFFER_SIZE);
+        local_irq_restore(flags);
 
         ret = mmc_test_set_blksize(test, blksz);
         if (ret)
                 return ret;
 
-        ret = mmc_test_transfer(test, write, buffer, addr, blocks, blksz);
+        ret = mmc_test_simple_transfer(test, sg, sg_len, dev_addr,
+                blocks, blksz, write);
         if (ret)
                 return ret;
 
         if (write) {
+                int sectors;
+
                 ret = mmc_test_set_blksize(test, 512);
                 if (ret)
                         return ret;
@@ -253,9 +420,9 @@ static int mmc_test_verified_transfer(struct mmc_test_card *test, int write,
                 memset(test->buffer, 0, sectors * 512);
 
                 for (i = 0;i < sectors;i++) {
-                        ret = mmc_test_transfer(test, 0,
+                        ret = mmc_test_buffer_transfer(test,
                                 test->buffer + i * 512,
-                                addr + i * 512, 1, 512);
+                                dev_addr + i * 512, 512, 0);
                         if (ret)
                                 return ret;
                 }
@@ -270,8 +437,11 @@ static int mmc_test_verified_transfer(struct mmc_test_card *test, int write,
                                 return RESULT_FAIL;
                 }
         } else {
+                local_irq_save(flags);
+                sg_copy_to_buffer(sg, sg_len, test->scratch, BUFFER_SIZE);
+                local_irq_restore(flags);
                 for (i = 0;i < blocks * blksz;i++) {
-                        if (buffer[i] != (u8)i)
+                        if (test->scratch[i] != (u8)i)
                                 return RESULT_FAIL;
                 }
         }
@@ -279,26 +449,6 @@ static int mmc_test_verified_transfer(struct mmc_test_card *test, int write,
         return 0;
 }
 
-static int mmc_test_cleanup_verify(struct mmc_test_card *test)
-{
-        int ret, i;
-
-        ret = mmc_test_set_blksize(test, 512);
-        if (ret)
-                return ret;
-
-        memset(test->buffer, 0, BUFFER_SIZE);
-
-        for (i = 0;i < BUFFER_SIZE / 512;i++) {
-                ret = mmc_test_transfer(test, 1, test->buffer + i * 512,
-                        i * 512, 1, 512);
-                if (ret)
-                        return ret;
-        }
-
-        return 0;
-}
-
 /*******************************************************************/
 /*  Tests                                                          */
 /*******************************************************************/
@@ -314,12 +464,15 @@ struct mmc_test_case {
 static int mmc_test_basic_write(struct mmc_test_card *test)
 {
         int ret;
+        struct scatterlist sg;
 
         ret = mmc_test_set_blksize(test, 512);
         if (ret)
                 return ret;
 
-        ret = mmc_test_transfer(test, 1, test->buffer, 0, 1, 512);
+        sg_init_one(&sg, test->buffer, 512);
+
+        ret = mmc_test_simple_transfer(test, &sg, 1, 0, 1, 512, 1);
         if (ret)
                 return ret;
 
@@ -329,12 +482,15 @@ static int mmc_test_basic_write(struct mmc_test_card *test)
 static int mmc_test_basic_read(struct mmc_test_card *test)
 {
         int ret;
+        struct scatterlist sg;
 
         ret = mmc_test_set_blksize(test, 512);
         if (ret)
                 return ret;
 
-        ret = mmc_test_transfer(test, 0, test->buffer, 0, 1, 512);
+        sg_init_one(&sg, test->buffer, 512);
+
+        ret = mmc_test_simple_transfer(test, &sg, 1, 0, 1, 512, 1);
         if (ret)
                 return ret;
 
@@ -344,8 +500,11 @@ static int mmc_test_basic_read(struct mmc_test_card *test)
 static int mmc_test_verify_write(struct mmc_test_card *test)
 {
         int ret;
+        struct scatterlist sg;
+
+        sg_init_one(&sg, test->buffer, 512);
 
-        ret = mmc_test_verified_transfer(test, 1, test->buffer, 0, 1, 512);
+        ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 1);
         if (ret)
                 return ret;
 
@@ -355,8 +514,11 @@ static int mmc_test_verify_write(struct mmc_test_card *test)
 static int mmc_test_verify_read(struct mmc_test_card *test)
 {
         int ret;
+        struct scatterlist sg;
+
+        sg_init_one(&sg, test->buffer, 512);
 
-        ret = mmc_test_verified_transfer(test, 0, test->buffer, 0, 1, 512);
+        ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 0);
         if (ret)
                 return ret;
 
@@ -367,6 +529,7 @@ static int mmc_test_multi_write(struct mmc_test_card *test)
 {
         int ret;
         unsigned int size;
+        struct scatterlist sg;
 
         if (test->card->host->max_blk_count == 1)
                 return RESULT_UNSUP_HOST;
@@ -379,8 +542,9 @@ static int mmc_test_multi_write(struct mmc_test_card *test)
         if (size < 1024)
                 return RESULT_UNSUP_HOST;
 
-        ret = mmc_test_verified_transfer(test, 1, test->buffer, 0,
-                size / 512, 512);
+        sg_init_one(&sg, test->buffer, size);
+
+        ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 1);
         if (ret)
                 return ret;
 
@@ -391,6 +555,7 @@ static int mmc_test_multi_read(struct mmc_test_card *test)
 {
         int ret;
         unsigned int size;
+        struct scatterlist sg;
 
         if (test->card->host->max_blk_count == 1)
                 return RESULT_UNSUP_HOST;
@@ -403,8 +568,9 @@ static int mmc_test_multi_read(struct mmc_test_card *test)
         if (size < 1024)
                 return RESULT_UNSUP_HOST;
 
-        ret = mmc_test_verified_transfer(test, 0, test->buffer, 0,
-                size / 512, 512);
+        sg_init_one(&sg, test->buffer, size);
+
+        ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 0);
         if (ret)
                 return ret;
 
@@ -414,13 +580,14 @@ static int mmc_test_multi_read(struct mmc_test_card *test)
 static int mmc_test_pow2_write(struct mmc_test_card *test)
 {
         int ret, i;
+        struct scatterlist sg;
 
         if (!test->card->csd.write_partial)
                 return RESULT_UNSUP_CARD;
 
         for (i = 1; i < 512;i <<= 1) {
-                ret = mmc_test_verified_transfer(test, 1,
-                        test->buffer, 0, 1, i);
+                sg_init_one(&sg, test->buffer, i);
+                ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 1);
                 if (ret)
                         return ret;
         }
@@ -431,13 +598,14 @@ static int mmc_test_pow2_write(struct mmc_test_card *test)
 static int mmc_test_pow2_read(struct mmc_test_card *test)
 {
         int ret, i;
+        struct scatterlist sg;
 
         if (!test->card->csd.read_partial)
                 return RESULT_UNSUP_CARD;
 
         for (i = 1; i < 512;i <<= 1) {
-                ret = mmc_test_verified_transfer(test, 0,
-                        test->buffer, 0, 1, i);
+                sg_init_one(&sg, test->buffer, i);
+                ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 0);
                 if (ret)
                         return ret;
         }
@@ -448,13 +616,14 @@ static int mmc_test_pow2_read(struct mmc_test_card *test)
 static int mmc_test_weird_write(struct mmc_test_card *test)
 {
         int ret, i;
+        struct scatterlist sg;
 
         if (!test->card->csd.write_partial)
                 return RESULT_UNSUP_CARD;
 
         for (i = 3; i < 512;i += 7) {
-                ret = mmc_test_verified_transfer(test, 1,
-                        test->buffer, 0, 1, i);
+                sg_init_one(&sg, test->buffer, i);
+                ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 1);
                 if (ret)
                         return ret;
         }
@@ -465,13 +634,14 @@ static int mmc_test_weird_write(struct mmc_test_card *test)
 static int mmc_test_weird_read(struct mmc_test_card *test)
 {
         int ret, i;
+        struct scatterlist sg;
 
         if (!test->card->csd.read_partial)
                 return RESULT_UNSUP_CARD;
 
         for (i = 3; i < 512;i += 7) {
-                ret = mmc_test_verified_transfer(test, 0,
-                        test->buffer, 0, 1, i);
+                sg_init_one(&sg, test->buffer, i);
+                ret = mmc_test_transfer(test, &sg, 1, 0, 1, i, 0);
                 if (ret)
                         return ret;
         }
@@ -482,10 +652,11 @@ static int mmc_test_weird_read(struct mmc_test_card *test)
 static int mmc_test_align_write(struct mmc_test_card *test)
 {
         int ret, i;
+        struct scatterlist sg;
 
         for (i = 1;i < 4;i++) {
-                ret = mmc_test_verified_transfer(test, 1, test->buffer + i,
-                        0, 1, 512);
+                sg_init_one(&sg, test->buffer + i, 512);
+                ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 1);
                 if (ret)
                         return ret;
         }
@@ -496,10 +667,11 @@ static int mmc_test_align_write(struct mmc_test_card *test)
 static int mmc_test_align_read(struct mmc_test_card *test)
 {
         int ret, i;
+        struct scatterlist sg;
 
         for (i = 1;i < 4;i++) {
-                ret = mmc_test_verified_transfer(test, 0, test->buffer + i,
-                        0, 1, 512);
+                sg_init_one(&sg, test->buffer + i, 512);
+                ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 0);
                 if (ret)
                         return ret;
         }
@@ -511,6 +683,7 @@ static int mmc_test_align_multi_write(struct mmc_test_card *test)
 {
         int ret, i;
         unsigned int size;
+        struct scatterlist sg;
 
         if (test->card->host->max_blk_count == 1)
                 return RESULT_UNSUP_HOST;
@@ -524,8 +697,8 @@ static int mmc_test_align_multi_write(struct mmc_test_card *test)
                 return RESULT_UNSUP_HOST;
 
         for (i = 1;i < 4;i++) {
-                ret = mmc_test_verified_transfer(test, 1, test->buffer + i,
-                        0, size / 512, 512);
+                sg_init_one(&sg, test->buffer + i, size);
+                ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 1);
                 if (ret)
                         return ret;
         }
@@ -537,6 +710,7 @@ static int mmc_test_align_multi_read(struct mmc_test_card *test)
 {
         int ret, i;
         unsigned int size;
+        struct scatterlist sg;
 
         if (test->card->host->max_blk_count == 1)
                 return RESULT_UNSUP_HOST;
@@ -550,8 +724,8 @@ static int mmc_test_align_multi_read(struct mmc_test_card *test)
                 return RESULT_UNSUP_HOST;
 
         for (i = 1;i < 4;i++) {
-                ret = mmc_test_verified_transfer(test, 0, test->buffer + i,
-                        0, size / 512, 512);
+                sg_init_one(&sg, test->buffer + i, size);
+                ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 0);
                 if (ret)
                         return ret;
         }
@@ -567,7 +741,7 @@ static int mmc_test_xfersize_write(struct mmc_test_card *test)
         if (ret)
                 return ret;
 
-        ret = __mmc_test_transfer(test, 1, 1, test->buffer, 0, 1, 512);
+        ret = mmc_test_broken_transfer(test, 1, 512, 1);
         if (ret)
                 return ret;
 
@@ -582,7 +756,7 @@ static int mmc_test_xfersize_read(struct mmc_test_card *test)
         if (ret)
                 return ret;
 
-        ret = __mmc_test_transfer(test, 0, 1, test->buffer, 0, 1, 512);
+        ret = mmc_test_broken_transfer(test, 1, 512, 0);
         if (ret)
                 return ret;
 
@@ -600,7 +774,7 @@ static int mmc_test_multi_xfersize_write(struct mmc_test_card *test)
         if (ret)
                 return ret;
 
-        ret = __mmc_test_transfer(test, 1, 1, test->buffer, 0, 2, 512);
+        ret = mmc_test_broken_transfer(test, 2, 512, 1);
         if (ret)
                 return ret;
 
@@ -618,7 +792,7 @@ static int mmc_test_multi_xfersize_read(struct mmc_test_card *test)
         if (ret)
                 return ret;
 
-        ret = __mmc_test_transfer(test, 0, 1, test->buffer, 0, 2, 512);
+        ret = mmc_test_broken_transfer(test, 2, 512, 0);
         if (ret)
                 return ret;
 
@@ -638,86 +812,86 @@ static const struct mmc_test_case mmc_test_cases[] = {
 
         {
                 .name = "Basic write (with data verification)",
-                .prepare = mmc_test_prepare_verify_write,
+                .prepare = mmc_test_prepare_write,
                 .run = mmc_test_verify_write,
-                .cleanup = mmc_test_cleanup_verify,
+                .cleanup = mmc_test_cleanup,
         },
 
         {
                 .name = "Basic read (with data verification)",
-                .prepare = mmc_test_prepare_verify_read,
+                .prepare = mmc_test_prepare_read,
                 .run = mmc_test_verify_read,
-                .cleanup = mmc_test_cleanup_verify,
+                .cleanup = mmc_test_cleanup,
         },
 
         {
                 .name = "Multi-block write",
-                .prepare = mmc_test_prepare_verify_write,
+                .prepare = mmc_test_prepare_write,
                 .run = mmc_test_multi_write,
-                .cleanup = mmc_test_cleanup_verify,
+                .cleanup = mmc_test_cleanup,
         },
 
         {
                 .name = "Multi-block read",
-                .prepare = mmc_test_prepare_verify_read,
+                .prepare = mmc_test_prepare_read,
                 .run = mmc_test_multi_read,
-                .cleanup = mmc_test_cleanup_verify,
+                .cleanup = mmc_test_cleanup,
         },
 
         {
                 .name = "Power of two block writes",
-                .prepare = mmc_test_prepare_verify_write,
+                .prepare = mmc_test_prepare_write,
                 .run = mmc_test_pow2_write,
-                .cleanup = mmc_test_cleanup_verify,
+                .cleanup = mmc_test_cleanup,
         },
 
         {
                 .name = "Power of two block reads",
-                .prepare = mmc_test_prepare_verify_read,
+                .prepare = mmc_test_prepare_read,
                 .run = mmc_test_pow2_read,
-                .cleanup = mmc_test_cleanup_verify,
+                .cleanup = mmc_test_cleanup,
         },
 
         {
                 .name = "Weird sized block writes",
-                .prepare = mmc_test_prepare_verify_write,
+                .prepare = mmc_test_prepare_write,
                 .run = mmc_test_weird_write,
-                .cleanup = mmc_test_cleanup_verify,
+                .cleanup = mmc_test_cleanup,
         },
 
         {
                 .name = "Weird sized block reads",
-                .prepare = mmc_test_prepare_verify_read,
+                .prepare = mmc_test_prepare_read,
                 .run = mmc_test_weird_read,
-                .cleanup = mmc_test_cleanup_verify,
+                .cleanup = mmc_test_cleanup,
         },
 
         {
                 .name = "Badly aligned write",
-                .prepare = mmc_test_prepare_verify_write,
+                .prepare = mmc_test_prepare_write,
                 .run = mmc_test_align_write,
-                .cleanup = mmc_test_cleanup_verify,
+                .cleanup = mmc_test_cleanup,
         },
 
         {
                 .name = "Badly aligned read",
-                .prepare = mmc_test_prepare_verify_read,
+                .prepare = mmc_test_prepare_read,
                 .run = mmc_test_align_read,
-                .cleanup = mmc_test_cleanup_verify,
+                .cleanup = mmc_test_cleanup,
         },
 
         {
                 .name = "Badly aligned multi-block write",
-                .prepare = mmc_test_prepare_verify_write,
+                .prepare = mmc_test_prepare_write,
                 .run = mmc_test_align_multi_write,
-                .cleanup = mmc_test_cleanup_verify,
+                .cleanup = mmc_test_cleanup,
         },
 
         {
                 .name = "Badly aligned multi-block read",
-                .prepare = mmc_test_prepare_verify_read,
+                .prepare = mmc_test_prepare_read,
                 .run = mmc_test_align_multi_read,
-                .cleanup = mmc_test_cleanup_verify,
+                .cleanup = mmc_test_cleanup,
         },
 
         {
@@ -743,7 +917,7 @@ static const struct mmc_test_case mmc_test_cases[] = {
 
 static struct mutex mmc_test_lock;
 
-static void mmc_test_run(struct mmc_test_card *test)
+static void mmc_test_run(struct mmc_test_card *test, int testcase)
 {
         int i, ret;
 
@@ -753,6 +927,9 @@ static void mmc_test_run(struct mmc_test_card *test)
         mmc_claim_host(test->card->host);
 
         for (i = 0;i < ARRAY_SIZE(mmc_test_cases);i++) {
+                if (testcase && ((i + 1) != testcase))
+                        continue;
+
                 printk(KERN_INFO "%s: Test case %d. %s...\n",
                         mmc_hostname(test->card->host), i + 1,
                         mmc_test_cases[i].name);
@@ -824,9 +1001,12 @@ static ssize_t mmc_test_store(struct device *dev,
 {
         struct mmc_card *card;
         struct mmc_test_card *test;
+        int testcase;
 
         card = container_of(dev, struct mmc_card, dev);
 
+        testcase = simple_strtol(buf, NULL, 10);
+
         test = kzalloc(sizeof(struct mmc_test_card), GFP_KERNEL);
         if (!test)
                 return -ENOMEM;
@@ -836,7 +1016,7 @@ static ssize_t mmc_test_store(struct device *dev,
         test->buffer = kzalloc(BUFFER_SIZE, GFP_KERNEL);
         if (test->buffer) {
                 mutex_lock(&mmc_test_lock);
-                mmc_test_run(test);
+                mmc_test_run(test, testcase);
                 mutex_unlock(&mmc_test_lock);
         }
 
@@ -852,6 +1032,9 @@ static int mmc_test_probe(struct mmc_card *card)
 {
         int ret;
 
+        if ((card->type != MMC_TYPE_MMC) && (card->type != MMC_TYPE_SD))
+                return -ENODEV;
+
         mutex_init(&mmc_test_lock);
 
         ret = device_create_file(&card->dev, &dev_attr_test);
diff --git a/drivers/mmc/card/sdio_uart.c b/drivers/mmc/card/sdio_uart.c
index eeea84c309e6..78ad48718ab0 100644
--- a/drivers/mmc/card/sdio_uart.c
+++ b/drivers/mmc/card/sdio_uart.c
@@ -885,12 +885,14 @@ static void sdio_uart_set_termios(struct tty_struct *tty, struct ktermios *old_t
         sdio_uart_release_func(port);
 }
 
-static void sdio_uart_break_ctl(struct tty_struct *tty, int break_state)
+static int sdio_uart_break_ctl(struct tty_struct *tty, int break_state)
 {
         struct sdio_uart_port *port = tty->driver_data;
+        int result;
 
-        if (sdio_uart_claim_func(port) != 0)
-                return;
+        result = sdio_uart_claim_func(port);
+        if (result != 0)
+                return result;
 
         if (break_state == -1)
                 port->lcr |= UART_LCR_SBC;
@@ -899,6 +901,7 @@ static void sdio_uart_break_ctl(struct tty_struct *tty, int break_state)
         sdio_out(port, UART_LCR, port->lcr);
 
         sdio_uart_release_func(port);
+        return 0;
 }
 
 static int sdio_uart_tiocmget(struct tty_struct *tty, struct file *file)
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 01ced4c5a61d..3ee5b8c3b5ce 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -3,7 +3,7 @@
  *
  *  Copyright (C) 2003-2004 Russell King, All Rights Reserved.
  *  SD support Copyright (C) 2004 Ian Molton, All Rights Reserved.
- *  Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.
+ *  Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved.
  *  MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved.
  *
  * This program is free software; you can redistribute it and/or modify
@@ -295,6 +295,33 @@ void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card)
 EXPORT_SYMBOL(mmc_set_data_timeout);
 
 /**
+ *      mmc_align_data_size - pads a transfer size to a more optimal value
+ *      @card: the MMC card associated with the data transfer
+ *      @sz: original transfer size
+ *
+ *      Pads the original data size with a number of extra bytes in
+ *      order to avoid controller bugs and/or performance hits
+ *      (e.g. some controllers revert to PIO for certain sizes).
+ *
+ *      Returns the improved size, which might be unmodified.
+ *
+ *      Note that this function is only relevant when issuing a
+ *      single scatter gather entry.
+ */
+unsigned int mmc_align_data_size(struct mmc_card *card, unsigned int sz)
+{
+        /*
+         * FIXME: We don't have a system for the controller to tell
+         * the core about its problems yet, so for now we just 32-bit
+         * align the size.
+         */
+        sz = ((sz + 3) / 4) * 4;
+
+        return sz;
+}
+EXPORT_SYMBOL(mmc_align_data_size);
+
+/**
  *      __mmc_claim_host - exclusively claim a host
  *      @host: mmc host to claim
  *      @abort: whether or not the operation should be aborted
@@ -638,6 +665,9 @@ void mmc_rescan(struct work_struct *work)
                  */
                 mmc_bus_put(host);
 
+                if (host->ops->get_cd && host->ops->get_cd(host) == 0)
+                        goto out;
+
                 mmc_claim_host(host);
 
                 mmc_power_up(host);
@@ -652,7 +682,7 @@ void mmc_rescan(struct work_struct *work)
                 if (!err) {
                         if (mmc_attach_sdio(host, ocr))
                                 mmc_power_off(host);
-                        return;
+                        goto out;
                 }
 
                 /*
@@ -662,7 +692,7 @@ void mmc_rescan(struct work_struct *work)
                 if (!err) {
                         if (mmc_attach_sd(host, ocr))
                                 mmc_power_off(host);
-                        return;
+                        goto out;
                 }
 
                 /*
@@ -672,7 +702,7 @@ void mmc_rescan(struct work_struct *work)
                 if (!err) {
                         if (mmc_attach_mmc(host, ocr))
                                 mmc_power_off(host);
-                        return;
+                        goto out;
                 }
 
                 mmc_release_host(host);
@@ -683,6 +713,9 @@ void mmc_rescan(struct work_struct *work)
 
                 mmc_bus_put(host);
         }
+out:
+        if (host->caps & MMC_CAP_NEEDS_POLL)
+                mmc_schedule_delayed_work(&host->detect, HZ);
 }
 
 void mmc_start_host(struct mmc_host *host)
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 3da29eef8f7d..fdd7c760be8c 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -288,7 +288,7 @@ static struct device_type mmc_type = {
 /*
  * Handle the detection and initialisation of a card.
  *
- * In the case of a resume, "curcard" will contain the card
+ * In the case of a resume, "oldcard" will contain the card
  * we're trying to reinitialise.
  */
 static int mmc_init_card(struct mmc_host *host, u32 ocr,
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index 7ef3b15c5e3d..26fc098d77cd 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -326,7 +326,7 @@ static struct device_type sd_type = {
 /*
  * Handle the detection and initialisation of a card.
  *
- * In the case of a resume, "curcard" will contain the card
+ * In the case of a resume, "oldcard" will contain the card
  * we're trying to reinitialise.
  */
 static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
@@ -494,13 +494,13 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
          * Check if read-only switch is active.
          */
         if (!oldcard) {
-                if (!host->ops->get_ro) {
+                if (!host->ops->get_ro || host->ops->get_ro(host) < 0) {
                         printk(KERN_WARNING "%s: host does not "
                                 "support reading read-only "
                                 "switch. assuming write-enable.\n",
                                 mmc_hostname(host));
                 } else {
-                        if (host->ops->get_ro(host))
+                        if (host->ops->get_ro(host) > 0)
                                 mmc_card_set_readonly(card);
                 }
         }
diff --git a/drivers/mmc/core/sdio_cis.c b/drivers/mmc/core/sdio_cis.c
index d5e51b1c7b3f..956bd7677502 100644
--- a/drivers/mmc/core/sdio_cis.c
+++ b/drivers/mmc/core/sdio_cis.c
@@ -129,6 +129,12 @@ static int cistpl_funce_func(struct sdio_func *func,
         /* TPLFE_MAX_BLK_SIZE */
         func->max_blksize = buf[12] | (buf[13] << 8);
 
+        /* TPLFE_ENABLE_TIMEOUT_VAL, present in ver 1.1 and above */
+        if (vsn > SDIO_SDIO_REV_1_00)
+                func->enable_timeout = (buf[28] | (buf[29] << 8)) * 10;
+        else
+                func->enable_timeout = jiffies_to_msecs(HZ);
+
         return 0;
 }
 
diff --git a/drivers/mmc/core/sdio_io.c b/drivers/mmc/core/sdio_io.c
index 625b92ce9cef..f61fc2d4cd0a 100644
--- a/drivers/mmc/core/sdio_io.c
+++ b/drivers/mmc/core/sdio_io.c
@@ -1,7 +1,7 @@
 /*
  *  linux/drivers/mmc/core/sdio_io.c
  *
- *  Copyright 2007 Pierre Ossman
+ *  Copyright 2007-2008 Pierre Ossman
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -76,11 +76,7 @@ int sdio_enable_func(struct sdio_func *func)
         if (ret)
                 goto err;
 
-        /*
-         * FIXME: This should timeout based on information in the CIS,
-         * but we don't have card to parse that yet.
-         */
-        timeout = jiffies + HZ;
+        timeout = jiffies + msecs_to_jiffies(func->enable_timeout);
 
         while (1) {
                 ret = mmc_io_rw_direct(func->card, 0, 0, SDIO_CCCR_IORx, 0, &reg);
@@ -167,10 +163,8 @@ int sdio_set_block_size(struct sdio_func *func, unsigned blksz)
                 return -EINVAL;
 
         if (blksz == 0) {
-                blksz = min(min(
-                        func->max_blksize,
-                        func->card->host->max_blk_size),
-                        512u);
+                blksz = min(func->max_blksize, func->card->host->max_blk_size);
+                blksz = min(blksz, 512u);
         }
 
         ret = mmc_io_rw_direct(func->card, 1, 0,
@@ -186,9 +180,116 @@ int sdio_set_block_size(struct sdio_func *func, unsigned blksz)
         func->cur_blksize = blksz;
         return 0;
 }
-
 EXPORT_SYMBOL_GPL(sdio_set_block_size);
 
+/*
+ * Calculate the maximum byte mode transfer size
+ */
+static inline unsigned int sdio_max_byte_size(struct sdio_func *func)
+{
+        unsigned mval = min(func->card->host->max_seg_size,
+                            func->card->host->max_blk_size);
+        mval = min(mval, func->max_blksize);
+        return min(mval, 512u); /* maximum size for byte mode */
+}
+
+/**
+ *      sdio_align_size - pads a transfer size to a more optimal value
+ *      @func: SDIO function
+ *      @sz: original transfer size
+ *
+ *      Pads the original data size with a number of extra bytes in
+ *      order to avoid controller bugs and/or performance hits
+ *      (e.g. some controllers revert to PIO for certain sizes).
+ *
+ *      If possible, it will also adjust the size so that it can be
+ *      handled in just a single request.
+ *
+ *      Returns the improved size, which might be unmodified.
+ */
+unsigned int sdio_align_size(struct sdio_func *func, unsigned int sz)
+{
+        unsigned int orig_sz;
+        unsigned int blk_sz, byte_sz;
+        unsigned chunk_sz;
+
+        orig_sz = sz;
+
+        /*
+         * Do a first check with the controller, in case it
+         * wants to increase the size up to a point where it
+         * might need more than one block.
+         */
+        sz = mmc_align_data_size(func->card, sz);
+
+        /*
+         * If we can still do this with just a byte transfer, then
+         * we're done.
+         */
+        if (sz <= sdio_max_byte_size(func))
+                return sz;
+
+        if (func->card->cccr.multi_block) {
+                /*
+                 * Check if the transfer is already block aligned
+                 */
+                if ((sz % func->cur_blksize) == 0)
+                        return sz;
+
+                /*
+                 * Realign it so that it can be done with one request,
+                 * and recheck if the controller still likes it.
+                 */
+                blk_sz = ((sz + func->cur_blksize - 1) /
+                        func->cur_blksize) * func->cur_blksize;
+                blk_sz = mmc_align_data_size(func->card, blk_sz);
+
+                /*
+                 * This value is only good if it is still just
+                 * one request.
+                 */
+                if ((blk_sz % func->cur_blksize) == 0)
+                        return blk_sz;
+
+                /*
+                 * We failed to do one request, but at least try to
+                 * pad the remainder properly.
+                 */
+                byte_sz = mmc_align_data_size(func->card,
+                                sz % func->cur_blksize);
+                if (byte_sz <= sdio_max_byte_size(func)) {
+                        blk_sz = sz / func->cur_blksize;
+                        return blk_sz * func->cur_blksize + byte_sz;
+                }
+        } else {
+                /*
+                 * We need multiple requests, so first check that the
+                 * controller can handle the chunk size;
+                 */
+                chunk_sz = mmc_align_data_size(func->card,
+                                sdio_max_byte_size(func));
+                if (chunk_sz == sdio_max_byte_size(func)) {
+                        /*
+                         * Fix up the size of the remainder (if any)
+                         */
+                        byte_sz = orig_sz % chunk_sz;
+                        if (byte_sz) {
+                                byte_sz = mmc_align_data_size(func->card,
+                                                byte_sz);
+                        }
+
+                        return (orig_sz / chunk_sz) * chunk_sz + byte_sz;
+                }
+        }
+
+        /*
+         * The controller is simply incapable of transferring the size
+         * we want in decent manner, so just return the original size.
+         */
+        return orig_sz;
+}
+EXPORT_SYMBOL_GPL(sdio_align_size);
+
 /* Split an arbitrarily sized data transfer into several
  * IO_RW_EXTENDED commands. */
 static int sdio_io_rw_ext_helper(struct sdio_func *func, int write,
@@ -199,14 +300,13 @@ static int sdio_io_rw_ext_helper(struct sdio_func *func, int write,
         int ret;
 
         /* Do the bulk of the transfer using block mode (if supported). */
-        if (func->card->cccr.multi_block) {
+        if (func->card->cccr.multi_block && (size > sdio_max_byte_size(func))) {
                 /* Blocks per command is limited by host count, host transfer
                  * size (we only use a single sg entry) and the maximum for
                  * IO_RW_EXTENDED of 511 blocks. */
-                max_blocks = min(min(
-                        func->card->host->max_blk_count,
-                        func->card->host->max_seg_size / func->cur_blksize),
-                        511u);
+                max_blocks = min(func->card->host->max_blk_count,
+                        func->card->host->max_seg_size / func->cur_blksize);
+                max_blocks = min(max_blocks, 511u);
 
                 while (remainder > func->cur_blksize) {
                         unsigned blocks;
@@ -231,11 +331,7 @@ static int sdio_io_rw_ext_helper(struct sdio_func *func, int write,
 
         /* Write the remainder using byte mode. */
         while (remainder > 0) {
-                size = remainder;
-                if (size > func->cur_blksize)
-                        size = func->cur_blksize;
-                if (size > 512)
-                        size = 512; /* maximum size for byte mode */
+                size = min(remainder, sdio_max_byte_size(func));
 
                 ret = mmc_io_rw_extended(func->card, write, func->num, addr,
                          incr_addr, buf, 1, size);
@@ -260,11 +356,10 @@ static int sdio_io_rw_ext_helper(struct sdio_func *func, int write,
  *      function. If there is a problem reading the address, 0xff
  *      is returned and @err_ret will contain the error code.
  */
-unsigned char sdio_readb(struct sdio_func *func, unsigned int addr,
-        int *err_ret)
+u8 sdio_readb(struct sdio_func *func, unsigned int addr, int *err_ret)
 {
         int ret;
-        unsigned char val;
+        u8 val;
 
         BUG_ON(!func);
 
@@ -293,8 +388,7 @@ EXPORT_SYMBOL_GPL(sdio_readb);
  *      function. @err_ret will contain the status of the actual
  *      transfer.
  */
-void sdio_writeb(struct sdio_func *func, unsigned char b, unsigned int addr,
-        int *err_ret)
+void sdio_writeb(struct sdio_func *func, u8 b, unsigned int addr, int *err_ret)
 {
         int ret;
 
@@ -355,7 +449,6 @@ int sdio_readsb(struct sdio_func *func, void *dst, unsigned int addr,
 {
         return sdio_io_rw_ext_helper(func, 0, addr, 0, dst, count);
 }
-
 EXPORT_SYMBOL_GPL(sdio_readsb);
 
 /**
@@ -385,8 +478,7 @@ EXPORT_SYMBOL_GPL(sdio_writesb);
  *      function. If there is a problem reading the address, 0xffff
  *      is returned and @err_ret will contain the error code.
  */
-unsigned short sdio_readw(struct sdio_func *func, unsigned int addr,
-        int *err_ret)
+u16 sdio_readw(struct sdio_func *func, unsigned int addr, int *err_ret)
 {
         int ret;
 
@@ -400,7 +492,7 @@ unsigned short sdio_readw(struct sdio_func *func, unsigned int addr,
                 return 0xFFFF;
         }
 
-        return le16_to_cpu(*(u16*)func->tmpbuf);
+        return le16_to_cpup((__le16 *)func->tmpbuf);
 }
 EXPORT_SYMBOL_GPL(sdio_readw);
 
@@ -415,12 +507,11 @@ EXPORT_SYMBOL_GPL(sdio_readw);
  *      function. @err_ret will contain the status of the actual
  *      transfer.
  */
-void sdio_writew(struct sdio_func *func, unsigned short b, unsigned int addr,
-        int *err_ret)
+void sdio_writew(struct sdio_func *func, u16 b, unsigned int addr, int *err_ret)
 {
         int ret;
 
-        *(u16*)func->tmpbuf = cpu_to_le16(b);
+        *(__le16 *)func->tmpbuf = cpu_to_le16(b);
 
         ret = sdio_memcpy_toio(func, addr, func->tmpbuf, 2);
         if (err_ret)
@@ -439,8 +530,7 @@ EXPORT_SYMBOL_GPL(sdio_writew);
  *      0xffffffff is returned and @err_ret will contain the error
  *      code.
  */
-unsigned long sdio_readl(struct sdio_func *func, unsigned int addr,
-        int *err_ret)
+u32 sdio_readl(struct sdio_func *func, unsigned int addr, int *err_ret)
 {
         int ret;
 
@@ -454,7 +544,7 @@ unsigned long sdio_readl(struct sdio_func *func, unsigned int addr,
                 return 0xFFFFFFFF;
         }
 
-        return le32_to_cpu(*(u32*)func->tmpbuf);
+        return le32_to_cpup((__le32 *)func->tmpbuf);
 }
 EXPORT_SYMBOL_GPL(sdio_readl);
 
@@ -469,12 +559,11 @@ EXPORT_SYMBOL_GPL(sdio_readl);
  *      function. @err_ret will contain the status of the actual
  *      transfer.
  */
-void sdio_writel(struct sdio_func *func, unsigned long b, unsigned int addr,
-        int *err_ret)
+void sdio_writel(struct sdio_func *func, u32 b, unsigned int addr, int *err_ret)
 {
         int ret;
 
-        *(u32*)func->tmpbuf = cpu_to_le32(b);
+        *(__le32 *)func->tmpbuf = cpu_to_le32(b);
 
         ret = sdio_memcpy_toio(func, addr, func->tmpbuf, 4);
         if (err_ret)
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index dead61754ad7..dc6f2579f85c 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -26,18 +26,31 @@ config MMC_PXA
 
 config MMC_SDHCI
         tristate "Secure Digital Host Controller Interface support"
-        depends on PCI
+        depends on HAS_DMA
         help
-          This select the generic Secure Digital Host Controller Interface.
+          This selects the generic Secure Digital Host Controller Interface.
           It is used by manufacturers such as Texas Instruments(R), Ricoh(R)
           and Toshiba(R). Most controllers found in laptops are of this type.
+
+          If you have a controller with this interface, say Y or M here. You
+          also need to enable an appropriate bus interface.
+
+          If unsure, say N.
+
+config MMC_SDHCI_PCI
+        tristate "SDHCI support on PCI bus"
+        depends on MMC_SDHCI && PCI
+        help
+          This selects the PCI Secure Digital Host Controller Interface.
+          Most controllers found today are PCI devices.
+
           If you have a controller with this interface, say Y or M here.
 
           If unsure, say N.
 
 config MMC_RICOH_MMC
         tristate "Ricoh MMC Controller Disabler  (EXPERIMENTAL)"
-        depends on PCI && EXPERIMENTAL && MMC_SDHCI
+        depends on MMC_SDHCI_PCI
         help
           This selects the disabler for the Ricoh MMC Controller. This
           proprietary controller is unnecessary because the SDHCI driver
@@ -91,6 +104,16 @@ config MMC_AT91
 
           If unsure, say N.
 
+config MMC_ATMELMCI
+        tristate "Atmel Multimedia Card Interface support"
+        depends on AVR32
+        help
+          This selects the Atmel Multimedia Card Interface driver. If
+          you have an AT32 (AVR32) platform with a Multimedia Card
+          slot, say Y or M here.
+
+          If unsure, say N.
+
 config MMC_IMX
         tristate "Motorola i.MX Multimedia Card Interface support"
         depends on ARCH_IMX
@@ -130,3 +153,24 @@ config MMC_SPI
 
           If unsure, or if your system has no SPI master driver, say N.
 
+config MMC_S3C
+        tristate "Samsung S3C SD/MMC Card Interface support"
+        depends on ARCH_S3C2410 && MMC
+        help
+          This selects a driver for the MCI interface found in
+          Samsung's S3C2410, S3C2412, S3C2440, S3C2442 CPUs.
+          If you have a board based on one of those and a MMC/SD
+          slot, say Y or M here.
+
+          If unsure, say N.
+
+config MMC_SDRICOH_CS
+        tristate "MMC/SD driver for Ricoh Bay1Controllers (EXPERIMENTAL)"
+        depends on EXPERIMENTAL && MMC && PCI && PCMCIA
+        help
+          Say Y here if your Notebook reports a Ricoh Bay1Controller PCMCIA
+          card whenever you insert a MMC or SD card into the card slot.
+
+          To compile this driver as a module, choose M here: the
+          module will be called sdricoh_cs.
+
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index 3877c87e6da2..db52eebfb50e 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -10,11 +10,15 @@ obj-$(CONFIG_MMC_ARMMMCI)	+= mmci.o
 obj-$(CONFIG_MMC_PXA)           += pxamci.o
 obj-$(CONFIG_MMC_IMX)           += imxmmc.o
 obj-$(CONFIG_MMC_SDHCI)         += sdhci.o
+obj-$(CONFIG_MMC_SDHCI_PCI)     += sdhci-pci.o
 obj-$(CONFIG_MMC_RICOH_MMC)     += ricoh_mmc.o
 obj-$(CONFIG_MMC_WBSD)          += wbsd.o
 obj-$(CONFIG_MMC_AU1X)          += au1xmmc.o
 obj-$(CONFIG_MMC_OMAP)          += omap.o
 obj-$(CONFIG_MMC_AT91)          += at91_mci.o
+obj-$(CONFIG_MMC_ATMELMCI)      += atmel-mci.o
 obj-$(CONFIG_MMC_TIFM_SD)       += tifm_sd.o
 obj-$(CONFIG_MMC_SPI)           += mmc_spi.o
+obj-$(CONFIG_MMC_S3C)           += s3cmci.o
+obj-$(CONFIG_MMC_SDRICOH_CS)    += sdricoh_cs.o
 
diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c
index 8979ad330a4d..f15e2064305c 100644
--- a/drivers/mmc/host/at91_mci.c
+++ b/drivers/mmc/host/at91_mci.c
@@ -125,9 +125,72 @@ struct at91mci_host
 
         /* Latest in the scatterlist that has been enabled for transfer */
         int transfer_index;
+
+        /* Timer for timeouts */
+        struct timer_list timer;
 };
 
 /*
+ * Reset the controller and restore most of the state
+ */
+static void at91_reset_host(struct at91mci_host *host)
+{
+        unsigned long flags;
+        u32 mr;
+        u32 sdcr;
+        u32 dtor;
+        u32 imr;
+
+        local_irq_save(flags);
+        imr = at91_mci_read(host, AT91_MCI_IMR);
+
+        at91_mci_write(host, AT91_MCI_IDR, 0xffffffff);
+
+        /* save current state */
+        mr = at91_mci_read(host, AT91_MCI_MR) & 0x7fff;
+        sdcr = at91_mci_read(host, AT91_MCI_SDCR);
+        dtor = at91_mci_read(host, AT91_MCI_DTOR);
+
+        /* reset the controller */
+        at91_mci_write(host, AT91_MCI_CR, AT91_MCI_MCIDIS | AT91_MCI_SWRST);
+
+        /* restore state */
+        at91_mci_write(host, AT91_MCI_CR, AT91_MCI_MCIEN);
+        at91_mci_write(host, AT91_MCI_MR, mr);
+        at91_mci_write(host, AT91_MCI_SDCR, sdcr);
+        at91_mci_write(host, AT91_MCI_DTOR, dtor);
+        at91_mci_write(host, AT91_MCI_IER, imr);
+
+        /* make sure sdio interrupts will fire */
+        at91_mci_read(host, AT91_MCI_SR);
+
+        local_irq_restore(flags);
+}
+
+static void at91_timeout_timer(unsigned long data)
+{
+        struct at91mci_host *host;
+
+        host = (struct at91mci_host *)data;
+
+        if (host->request) {
+                dev_err(host->mmc->parent, "Timeout waiting end of packet\n");
+
+                if (host->cmd && host->cmd->data) {
+                        host->cmd->data->error = -ETIMEDOUT;
+                } else {
+                        if (host->cmd)
+                                host->cmd->error = -ETIMEDOUT;
+                        else
+                                host->request->cmd->error = -ETIMEDOUT;
+                }
+
+                at91_reset_host(host);
+                mmc_request_done(host->mmc, host->request);
+        }
+}
+
+/*
  * Copy from sg to a dma block - used for transfers
  */
 static inline void at91_mci_sg_to_dma(struct at91mci_host *host, struct mmc_data *data)
@@ -135,9 +198,14 @@ static inline void at91_mci_sg_to_dma(struct at91mci_host *host, struct mmc_data
         unsigned int len, i, size;
         unsigned *dmabuf = host->buffer;
 
-        size = host->total_length;
+        size = data->blksz * data->blocks;
         len = data->sg_len;
 
+        /* AT91SAM926[0/3] Data Write Operation and number of bytes erratum */
+        if (cpu_is_at91sam9260() || cpu_is_at91sam9263())
+                if (host->total_length == 12)
+                        memset(dmabuf, 0, 12);
+
         /*
          * Just loop through all entries. Size might not
          * be the entire list though so make sure that
@@ -159,9 +227,10 @@ static inline void at91_mci_sg_to_dma(struct at91mci_host *host, struct mmc_data
 
                         for (index = 0; index < (amount / 4); index++)
                                 *dmabuf++ = swab32(sgbuffer[index]);
-                }
-                else
+                } else {
                         memcpy(dmabuf, sgbuffer, amount);
+                        dmabuf += amount;
+                }
 
                 kunmap_atomic(sgbuffer, KM_BIO_SRC_IRQ);
 
@@ -233,11 +302,11 @@ static void at91_mci_pre_dma_read(struct at91mci_host *host)
 
                 if (i == 0) {
                         at91_mci_write(host, ATMEL_PDC_RPR, sg->dma_address);
-                        at91_mci_write(host, ATMEL_PDC_RCR, sg->length / 4);
+                        at91_mci_write(host, ATMEL_PDC_RCR, (data->blksz & 0x3) ? sg->length : sg->length / 4);
                 }
                 else {
                         at91_mci_write(host, ATMEL_PDC_RNPR, sg->dma_address);
-                        at91_mci_write(host, ATMEL_PDC_RNCR, sg->length / 4);
+                        at91_mci_write(host, ATMEL_PDC_RNCR, (data->blksz & 0x3) ? sg->length : sg->length / 4);
                 }
         }
 
@@ -277,8 +346,6 @@ static void at91_mci_post_dma_read(struct at91mci_host *host)
 
                 dma_unmap_page(NULL, sg->dma_address, sg->length, DMA_FROM_DEVICE);
 
-                data->bytes_xfered += sg->length;
-
                 if (cpu_is_at91rm9200()) {      /* AT91RM9200 errata */
                         unsigned int *buffer;
                         int index;
@@ -294,6 +361,8 @@ static void at91_mci_post_dma_read(struct at91mci_host *host)
                 }
 
                 flush_dcache_page(sg_page(sg));
+
+                data->bytes_xfered += sg->length;
         }
 
         /* Is there another transfer to trigger? */
@@ -334,10 +403,32 @@ static void at91_mci_handle_transmitted(struct at91mci_host *host)
                 at91_mci_write(host, AT91_MCI_IER, AT91_MCI_BLKE);
         } else
                 at91_mci_write(host, AT91_MCI_IER, AT91_MCI_NOTBUSY);
+}
+
+/*
+ * Update bytes tranfered count during a write operation
+ */
+static void at91_mci_update_bytes_xfered(struct at91mci_host *host)
+{
+        struct mmc_data *data;
+
+        /* always deal with the effective request (and not the current cmd) */
+
+        if (host->request->cmd && host->request->cmd->error != 0)
+                return;
 
-        data->bytes_xfered = host->total_length;
+        if (host->request->data) {
+                data = host->request->data;
+                if (data->flags & MMC_DATA_WRITE) {
+                        /* card is in IDLE mode now */
+                        pr_debug("-> bytes_xfered %d, total_length = %d\n",
+                                data->bytes_xfered, host->total_length);
+                        data->bytes_xfered = data->blksz * data->blocks;
+                }
+        }
 }
 
+
 /*Handle after command sent ready*/
 static int at91_mci_handle_cmdrdy(struct at91mci_host *host)
 {
@@ -350,8 +441,7 @@ static int at91_mci_handle_cmdrdy(struct at91mci_host *host)
                 } else return 1;
         } else if (host->cmd->data->flags & MMC_DATA_WRITE) {
                 /*After sendding multi-block-write command, start DMA transfer*/
-                at91_mci_write(host, AT91_MCI_IER, AT91_MCI_TXBUFE);
-                at91_mci_write(host, AT91_MCI_IER, AT91_MCI_BLKE);
+                at91_mci_write(host, AT91_MCI_IER, AT91_MCI_TXBUFE | AT91_MCI_BLKE);
                 at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN);
         }
 
@@ -430,11 +520,19 @@ static void at91_mci_send_command(struct at91mci_host *host, struct mmc_command
 
         if (data) {
 
-                if ( data->blksz & 0x3 ) {
-                        pr_debug("Unsupported block size\n");
-                        cmd->error = -EINVAL;
-                        mmc_request_done(host->mmc, host->request);
-                        return;
+                if (cpu_is_at91rm9200() || cpu_is_at91sam9261()) {
+                        if (data->blksz & 0x3) {
+                                pr_debug("Unsupported block size\n");
+                                cmd->error = -EINVAL;
+                                mmc_request_done(host->mmc, host->request);
+                                return;
+                        }
+                        if (data->flags & MMC_DATA_STREAM) {
+                                pr_debug("Stream commands not supported\n");
+                                cmd->error = -EINVAL;
+                                mmc_request_done(host->mmc, host->request);
+                                return;
+                        }
                 }
 
                 block_length = data->blksz;
@@ -481,8 +579,16 @@ static void at91_mci_send_command(struct at91mci_host *host, struct mmc_command
                 ier = AT91_MCI_CMDRDY;
         } else {
                 /* zero block length and PDC mode */
-                mr = at91_mci_read(host, AT91_MCI_MR) & 0x7fff;
-                at91_mci_write(host, AT91_MCI_MR, mr | (block_length << 16) | AT91_MCI_PDCMODE);
+                mr = at91_mci_read(host, AT91_MCI_MR) & 0x5fff;
+                mr |= (data->blksz & 0x3) ? AT91_MCI_PDCFBYTE : 0;
+                mr |= (block_length << 16);
+                mr |= AT91_MCI_PDCMODE;
+                at91_mci_write(host, AT91_MCI_MR, mr);
+
+                if (!(cpu_is_at91rm9200() || cpu_is_at91sam9261()))
+                        at91_mci_write(host, AT91_MCI_BLKR,
+                                AT91_MCI_BLKR_BCNT(blocks) |
+                                AT91_MCI_BLKR_BLKLEN(block_length));
 
                 /*
                  * Disable the PDC controller
@@ -508,6 +614,13 @@ static void at91_mci_send_command(struct at91mci_host *host, struct mmc_command
                                  * Handle a write
                                  */
                                 host->total_length = block_length * blocks;
+                                /*
+                                 * AT91SAM926[0/3] Data Write Operation and
+                                 * number of bytes erratum
+                                 */
+                                if (cpu_is_at91sam9260 () || cpu_is_at91sam9263())
+                                        if (host->total_length < 12)
+                                                host->total_length = 12;
                                 host->buffer = dma_alloc_coherent(NULL,
                                                 host->total_length,
                                                 &host->physical_address, GFP_KERNEL);
@@ -517,7 +630,9 @@ static void at91_mci_send_command(struct at91mci_host *host, struct mmc_command
                                 pr_debug("Transmitting %d bytes\n", host->total_length);
 
                                 at91_mci_write(host, ATMEL_PDC_TPR, host->physical_address);
-                                at91_mci_write(host, ATMEL_PDC_TCR, host->total_length / 4);
+                                at91_mci_write(host, ATMEL_PDC_TCR, (data->blksz & 0x3) ?
+                                                host->total_length : host->total_length / 4);
+
                                 ier = AT91_MCI_CMDRDY;
                         }
                 }
@@ -552,20 +667,26 @@ static void at91_mci_process_next(struct at91mci_host *host)
         else if ((!(host->flags & FL_SENT_STOP)) && host->request->stop) {
                 host->flags |= FL_SENT_STOP;
                 at91_mci_send_command(host, host->request->stop);
-        }
-        else
+        } else {
+                del_timer(&host->timer);
+                /* the at91rm9200 mci controller hangs after some transfers,
+                 * and the workaround is to reset it after each transfer.
+                 */
+                if (cpu_is_at91rm9200())
+                        at91_reset_host(host);
                 mmc_request_done(host->mmc, host->request);
+        }
 }
 
 /*
  * Handle a command that has been completed
  */
-static void at91_mci_completed_command(struct at91mci_host *host)
+static void at91_mci_completed_command(struct at91mci_host *host, unsigned int status)
 {
         struct mmc_command *cmd = host->cmd;
-        unsigned int status;
+        struct mmc_data *data = cmd->data;
 
-        at91_mci_write(host, AT91_MCI_IDR, 0xffffffff);
+        at91_mci_write(host, AT91_MCI_IDR, 0xffffffff & ~(AT91_MCI_SDIOIRQA | AT91_MCI_SDIOIRQB));
 
         cmd->resp[0] = at91_mci_read(host, AT91_MCI_RSPR(0));
         cmd->resp[1] = at91_mci_read(host, AT91_MCI_RSPR(1));
@@ -577,25 +698,34 @@ static void at91_mci_completed_command(struct at91mci_host *host)
                 host->buffer = NULL;
         }
 
-        status = at91_mci_read(host, AT91_MCI_SR);
-
-        pr_debug("Status = %08X [%08X %08X %08X %08X]\n",
-                 status, cmd->resp[0], cmd->resp[1], cmd->resp[2], cmd->resp[3]);
+        pr_debug("Status = %08X/%08x [%08X %08X %08X %08X]\n",
+                 status, at91_mci_read(host, AT91_MCI_SR),
+                 cmd->resp[0], cmd->resp[1], cmd->resp[2], cmd->resp[3]);
 
         if (status & AT91_MCI_ERRORS) {
                 if ((status & AT91_MCI_RCRCE) && !(mmc_resp_type(cmd) & MMC_RSP_CRC)) {
                         cmd->error = 0;
                 }
                 else {
-                        if (status & (AT91_MCI_RTOE | AT91_MCI_DTOE))
-                                cmd->error = -ETIMEDOUT;
-                        else if (status & (AT91_MCI_RCRCE | AT91_MCI_DCRCE))
-                                cmd->error = -EILSEQ;
-                        else
-                                cmd->error = -EIO;
+                        if (status & (AT91_MCI_DTOE | AT91_MCI_DCRCE)) {
+                                if (data) {
+                                        if (status & AT91_MCI_DTOE)
+                                                data->error = -ETIMEDOUT;
+                                        else if (status & AT91_MCI_DCRCE)
+                                                data->error = -EILSEQ;
+                                }
+                        } else {
+                                if (status & AT91_MCI_RTOE)
+                                        cmd->error = -ETIMEDOUT;
+                                else if (status & AT91_MCI_RCRCE)
+                                        cmd->error = -EILSEQ;
+                                else
+                                        cmd->error = -EIO;
+                        }
 
-                        pr_debug("Error detected and set to %d (cmd = %d, retries = %d)\n",
-                                 cmd->error, cmd->opcode, cmd->retries);
+                        pr_debug("Error detected and set to %d/%d (cmd = %d, retries = %d)\n",
+                                cmd->error, data ? data->error : 0,
+                                 cmd->opcode, cmd->retries);
                 }
         }
         else
@@ -613,6 +743,8 @@ static void at91_mci_request(struct mmc_host *mmc, struct mmc_request *mrq)
         host->request = mrq;
         host->flags = 0;
 
+        mod_timer(&host->timer, jiffies +  HZ);
+
         at91_mci_process_next(host);
 }
 
@@ -736,6 +868,7 @@ static irqreturn_t at91_mci_irq(int irq, void *devid)
 
                 if (int_status & AT91_MCI_NOTBUSY) {
                         pr_debug("Card is ready\n");
+                        at91_mci_update_bytes_xfered(host);
                         completed = 1;
                 }
 
@@ -744,9 +877,21 @@ static irqreturn_t at91_mci_irq(int irq, void *devid)
 
                 if (int_status & AT91_MCI_BLKE) {
                         pr_debug("Block transfer has ended\n");
-                        completed = 1;
+                        if (host->request->data && host->request->data->blocks > 1) {
+                                /* multi block write : complete multi write
+                                 * command and send stop */
+                                completed = 1;
+                        } else {
+                                at91_mci_write(host, AT91_MCI_IER, AT91_MCI_NOTBUSY);
+                        }
                 }
 
+                if (int_status & AT91_MCI_SDIOIRQA)
+                        mmc_signal_sdio_irq(host->mmc);
+
+                if (int_status & AT91_MCI_SDIOIRQB)
+                        mmc_signal_sdio_irq(host->mmc);
+
                 if (int_status & AT91_MCI_TXRDY)
                         pr_debug("Ready to transmit\n");
 
@@ -761,10 +906,10 @@ static irqreturn_t at91_mci_irq(int irq, void *devid)
 
         if (completed) {
                 pr_debug("Completed command\n");
-                at91_mci_write(host, AT91_MCI_IDR, 0xffffffff);
-                at91_mci_completed_command(host);
+                at91_mci_write(host, AT91_MCI_IDR, 0xffffffff & ~(AT91_MCI_SDIOIRQA | AT91_MCI_SDIOIRQB));
+                at91_mci_completed_command(host, int_status);
         } else
-                at91_mci_write(host, AT91_MCI_IDR, int_status);
+                at91_mci_write(host, AT91_MCI_IDR, int_status & ~(AT91_MCI_SDIOIRQA | AT91_MCI_SDIOIRQB));
 
         return IRQ_HANDLED;
 }
@@ -793,25 +938,33 @@ static irqreturn_t at91_mmc_det_irq(int irq, void *_host)
 
 static int at91_mci_get_ro(struct mmc_host *mmc)
 {
-        int read_only = 0;
         struct at91mci_host *host = mmc_priv(mmc);
 
-        if (host->board->wp_pin) {
-                read_only = gpio_get_value(host->board->wp_pin);
-                printk(KERN_WARNING "%s: card is %s\n", mmc_hostname(mmc),
-                                (read_only ? "read-only" : "read-write") );
-        }
-        else {
-                printk(KERN_WARNING "%s: host does not support reading read-only "
-                                "switch.  Assuming write-enable.\n", mmc_hostname(mmc));
-        }
-        return read_only;
+        if (host->board->wp_pin)
+                return !!gpio_get_value(host->board->wp_pin);
+        /*
+         * Board doesn't support read only detection; let the mmc core
+         * decide what to do.
+         */
+        return -ENOSYS;
+}
+
+static void at91_mci_enable_sdio_irq(struct mmc_host *mmc, int enable)
+{
+        struct at91mci_host *host = mmc_priv(mmc);
+
+        pr_debug("%s: sdio_irq %c : %s\n", mmc_hostname(host->mmc),
+                host->board->slot_b ? 'B':'A', enable ? "enable" : "disable");
+        at91_mci_write(host, enable ? AT91_MCI_IER : AT91_MCI_IDR,
+                host->board->slot_b ? AT91_MCI_SDIOIRQB : AT91_MCI_SDIOIRQA);
+
 }
 
 static const struct mmc_host_ops at91_mci_ops = {
         .request        = at91_mci_request,
         .set_ios        = at91_mci_set_ios,
         .get_ro         = at91_mci_get_ro,
+        .enable_sdio_irq = at91_mci_enable_sdio_irq,
 };
 
 /*
@@ -842,6 +995,7 @@ static int __init at91_mci_probe(struct platform_device *pdev)
         mmc->f_min = 375000;
         mmc->f_max = 25000000;
         mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
+        mmc->caps = MMC_CAP_SDIO_IRQ;
 
         mmc->max_blk_size = 4095;
         mmc->max_blk_count = mmc->max_req_size;
@@ -935,6 +1089,8 @@ static int __init at91_mci_probe(struct platform_device *pdev)
 
         mmc_add_host(mmc);
 
+        setup_timer(&host->timer, at91_timeout_timer, (unsigned long)host);
+
         /*
          * monitor card insertion/removal if we can
          */
@@ -995,6 +1151,7 @@ static int __exit at91_mci_remove(struct platform_device *pdev)
         }
 
         at91_mci_disable(host);
+        del_timer_sync(&host->timer);
         mmc_remove_host(mmc);
         free_irq(host->irq, host);
 
diff --git a/drivers/mmc/host/atmel-mci-regs.h b/drivers/mmc/host/atmel-mci-regs.h
new file mode 100644
index 000000000000..a9a5657706c6
--- /dev/null
+++ b/drivers/mmc/host/atmel-mci-regs.h
@@ -0,0 +1,91 @@
+/*
+ * Atmel MultiMedia Card Interface driver
+ *
+ * Copyright (C) 2004-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __DRIVERS_MMC_ATMEL_MCI_H__
+#define __DRIVERS_MMC_ATMEL_MCI_H__
+
+/* MCI Register Definitions */
+#define MCI_CR                  0x0000  /* Control */
+# define MCI_CR_MCIEN           (  1 <<  0)     /* MCI Enable */
+# define MCI_CR_MCIDIS          (  1 <<  1)     /* MCI Disable */
+# define MCI_CR_SWRST           (  1 <<  7)     /* Software Reset */
+#define MCI_MR                  0x0004  /* Mode */
+# define MCI_MR_CLKDIV(x)       ((x) <<  0)     /* Clock Divider */
+# define MCI_MR_RDPROOF         (  1 << 11)     /* Read Proof */
+# define MCI_MR_WRPROOF         (  1 << 12)     /* Write Proof */
+#define MCI_DTOR                0x0008  /* Data Timeout */
+# define MCI_DTOCYC(x)          ((x) <<  0)     /* Data Timeout Cycles */
+# define MCI_DTOMUL(x)          ((x) <<  4)     /* Data Timeout Multiplier */
+#define MCI_SDCR                0x000c  /* SD Card / SDIO */
+# define MCI_SDCSEL_SLOT_A      (  0 <<  0)     /* Select SD slot A */
+# define MCI_SDCSEL_SLOT_B      (  1 <<  0)     /* Select SD slot A */
+# define MCI_SDCBUS_1BIT        (  0 <<  7)     /* 1-bit data bus */
+# define MCI_SDCBUS_4BIT        (  1 <<  7)     /* 4-bit data bus */
+#define MCI_ARGR                0x0010  /* Command Argument */
+#define MCI_CMDR                0x0014  /* Command */
+# define MCI_CMDR_CMDNB(x)      ((x) <<  0)     /* Command Opcode */
+# define MCI_CMDR_RSPTYP_NONE   (  0 <<  6)     /* No response */
+# define MCI_CMDR_RSPTYP_48BIT  (  1 <<  6)     /* 48-bit response */
+# define MCI_CMDR_RSPTYP_136BIT (  2 <<  6)     /* 136-bit response */
+# define MCI_CMDR_SPCMD_INIT    (  1 <<  8)     /* Initialization command */
+# define MCI_CMDR_SPCMD_SYNC    (  2 <<  8)     /* Synchronized command */
+# define MCI_CMDR_SPCMD_INT     (  4 <<  8)     /* Interrupt command */
+# define MCI_CMDR_SPCMD_INTRESP (  5 <<  8)     /* Interrupt response */
+# define MCI_CMDR_OPDCMD        (  1 << 11)     /* Open Drain */
+# define MCI_CMDR_MAXLAT_5CYC   (  0 << 12)     /* Max latency 5 cycles */
+# define MCI_CMDR_MAXLAT_64CYC  (  1 << 12)     /* Max latency 64 cycles */
+# define MCI_CMDR_START_XFER    (  1 << 16)     /* Start data transfer */
+# define MCI_CMDR_STOP_XFER     (  2 << 16)     /* Stop data transfer */
+# define MCI_CMDR_TRDIR_WRITE   (  0 << 18)     /* Write data */
+# define MCI_CMDR_TRDIR_READ    (  1 << 18)     /* Read data */
+# define MCI_CMDR_BLOCK         (  0 << 19)     /* Single-block transfer */
+# define MCI_CMDR_MULTI_BLOCK   (  1 << 19)     /* Multi-block transfer */
+# define MCI_CMDR_STREAM        (  2 << 19)     /* MMC Stream transfer */
+# define MCI_CMDR_SDIO_BYTE     (  4 << 19)     /* SDIO Byte transfer */
+# define MCI_CMDR_SDIO_BLOCK    (  5 << 19)     /* SDIO Block transfer */
+# define MCI_CMDR_SDIO_SUSPEND  (  1 << 24)     /* SDIO Suspend Command */
+# define MCI_CMDR_SDIO_RESUME   (  2 << 24)     /* SDIO Resume Command */
+#define MCI_BLKR                0x0018  /* Block */
+# define MCI_BCNT(x)            ((x) <<  0)     /* Data Block Count */
+# define MCI_BLKLEN(x)          ((x) << 16)     /* Data Block Length */
+#define MCI_RSPR                0x0020  /* Response 0 */
+#define MCI_RSPR1               0x0024  /* Response 1 */
+#define MCI_RSPR2               0x0028  /* Response 2 */
+#define MCI_RSPR3               0x002c  /* Response 3 */
+#define MCI_RDR                 0x0030  /* Receive Data */
+#define MCI_TDR                 0x0034  /* Transmit Data */
+#define MCI_SR                  0x0040  /* Status */
+#define MCI_IER                 0x0044  /* Interrupt Enable */
+#define MCI_IDR                 0x0048  /* Interrupt Disable */
+#define MCI_IMR                 0x004c  /* Interrupt Mask */
+# define MCI_CMDRDY             (  1 <<   0)    /* Command Ready */
+# define MCI_RXRDY              (  1 <<   1)    /* Receiver Ready */
+# define MCI_TXRDY              (  1 <<   2)    /* Transmitter Ready */
+# define MCI_BLKE               (  1 <<   3)    /* Data Block Ended */
+# define MCI_DTIP               (  1 <<   4)    /* Data Transfer In Progress */
+# define MCI_NOTBUSY            (  1 <<   5)    /* Data Not Busy */
+# define MCI_SDIOIRQA           (  1 <<   8)    /* SDIO IRQ in slot A */
+# define MCI_SDIOIRQB           (  1 <<   9)    /* SDIO IRQ in slot B */
+# define MCI_RINDE              (  1 <<  16)    /* Response Index Error */
+# define MCI_RDIRE              (  1 <<  17)    /* Response Direction Error */
+# define MCI_RCRCE              (  1 <<  18)    /* Response CRC Error */
+# define MCI_RENDE              (  1 <<  19)    /* Response End Bit Error */
+# define MCI_RTOE               (  1 <<  20)    /* Response Time-Out Error */
+# define MCI_DCRCE              (  1 <<  21)    /* Data CRC Error */
+# define MCI_DTOE               (  1 <<  22)    /* Data Time-Out Error */
+# define MCI_OVRE               (  1 <<  30)    /* RX Overrun Error */
+# define MCI_UNRE               (  1 <<  31)    /* TX Underrun Error */
+
+/* Register access macros */
+#define mci_readl(port,reg)                             \
+        __raw_readl((port)->regs + MCI_##reg)
+#define mci_writel(port,reg,value)                      \
+        __raw_writel((value), (port)->regs + MCI_##reg)
+
+#endif /* __DRIVERS_MMC_ATMEL_MCI_H__ */
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
new file mode 100644
index 000000000000..cce873c5a149
--- /dev/null
+++ b/drivers/mmc/host/atmel-mci.c
@@ -0,0 +1,981 @@
+/*
+ * Atmel MultiMedia Card Interface driver
+ *
+ * Copyright (C) 2004-2008 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/blkdev.h>
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/scatterlist.h>
+
+#include <linux/mmc/host.h>
+
+#include <asm/atmel-mci.h>
+#include <asm/io.h>
+#include <asm/unaligned.h>
+
+#include <asm/arch/board.h>
+#include <asm/arch/gpio.h>
+
+#include "atmel-mci-regs.h"
+
+#define ATMCI_DATA_ERROR_FLAGS  (MCI_DCRCE | MCI_DTOE | MCI_OVRE | MCI_UNRE)
+
+enum {
+        EVENT_CMD_COMPLETE = 0,
+        EVENT_DATA_ERROR,
+        EVENT_DATA_COMPLETE,
+        EVENT_STOP_SENT,
+        EVENT_STOP_COMPLETE,
+        EVENT_XFER_COMPLETE,
+};
+
+struct atmel_mci {
+        struct mmc_host         *mmc;
+        void __iomem            *regs;
+
+        struct scatterlist      *sg;
+        unsigned int            pio_offset;
+
+        struct mmc_request      *mrq;
+        struct mmc_command      *cmd;
+        struct mmc_data         *data;
+
+        u32                     cmd_status;
+        u32                     data_status;
+        u32                     stop_status;
+        u32                     stop_cmdr;
+
+        u32                     mode_reg;
+        u32                     sdc_reg;
+
+        struct tasklet_struct   tasklet;
+        unsigned long           pending_events;
+        unsigned long           completed_events;
+
+        int                     present;
+        int                     detect_pin;
+        int                     wp_pin;
+
+        /* For detect pin debouncing */
+        struct timer_list       detect_timer;
+
+        unsigned long           bus_hz;
+        unsigned long           mapbase;
+        struct clk              *mck;
+        struct platform_device  *pdev;
+};
+
+#define atmci_is_completed(host, event)                         \
+        test_bit(event, &host->completed_events)
+#define atmci_test_and_clear_pending(host, event)               \
+        test_and_clear_bit(event, &host->pending_events)
+#define atmci_test_and_set_completed(host, event)               \
+        test_and_set_bit(event, &host->completed_events)
+#define atmci_set_completed(host, event)                        \
+        set_bit(event, &host->completed_events)
+#define atmci_set_pending(host, event)                          \
+        set_bit(event, &host->pending_events)
+#define atmci_clear_pending(host, event)                        \
+        clear_bit(event, &host->pending_events)
+
+
+static void atmci_enable(struct atmel_mci *host)
+{
+        clk_enable(host->mck);
+        mci_writel(host, CR, MCI_CR_MCIEN);
+        mci_writel(host, MR, host->mode_reg);
+        mci_writel(host, SDCR, host->sdc_reg);
+}
+
+static void atmci_disable(struct atmel_mci *host)
+{
+        mci_writel(host, CR, MCI_CR_SWRST);
+
+        /* Stall until write is complete, then disable the bus clock */
+        mci_readl(host, SR);
+        clk_disable(host->mck);
+}
+
+static inline unsigned int ns_to_clocks(struct atmel_mci *host,
+                                        unsigned int ns)
+{
+        return (ns * (host->bus_hz / 1000000) + 999) / 1000;
+}
+
+static void atmci_set_timeout(struct atmel_mci *host,
+                              struct mmc_data *data)
+{
+        static unsigned dtomul_to_shift[] = {
+                0, 4, 7, 8, 10, 12, 16, 20
+        };
+        unsigned        timeout;
+        unsigned        dtocyc;
+        unsigned        dtomul;
+
+        timeout = ns_to_clocks(host, data->timeout_ns) + data->timeout_clks;
+
+        for (dtomul = 0; dtomul < 8; dtomul++) {
+                unsigned shift = dtomul_to_shift[dtomul];
+                dtocyc = (timeout + (1 << shift) - 1) >> shift;
+                if (dtocyc < 15)
+                        break;
+        }
+
+        if (dtomul >= 8) {
+                dtomul = 7;
+                dtocyc = 15;
+        }
+
+        dev_vdbg(&host->mmc->class_dev, "setting timeout to %u cycles\n",
+                        dtocyc << dtomul_to_shift[dtomul]);
+        mci_writel(host, DTOR, (MCI_DTOMUL(dtomul) | MCI_DTOCYC(dtocyc)));
+}
+
+/*
+ * Return mask with command flags to be enabled for this command.
+ */
+static u32 atmci_prepare_command(struct mmc_host *mmc,
+                                 struct mmc_command *cmd)
+{
+        struct mmc_data *data;
+        u32             cmdr;
+
+        cmd->error = -EINPROGRESS;
+
+        cmdr = MCI_CMDR_CMDNB(cmd->opcode);
+
+        if (cmd->flags & MMC_RSP_PRESENT) {
+                if (cmd->flags & MMC_RSP_136)
+                        cmdr |= MCI_CMDR_RSPTYP_136BIT;
+                else
+                        cmdr |= MCI_CMDR_RSPTYP_48BIT;
+        }
+
+        /*
+         * This should really be MAXLAT_5 for CMD2 and ACMD41, but
+         * it's too difficult to determine whether this is an ACMD or
+         * not. Better make it 64.
+         */
+        cmdr |= MCI_CMDR_MAXLAT_64CYC;
+
+        if (mmc->ios.bus_mode == MMC_BUSMODE_OPENDRAIN)
+                cmdr |= MCI_CMDR_OPDCMD;
+
+        data = cmd->data;
+        if (data) {
+                cmdr |= MCI_CMDR_START_XFER;
+                if (data->flags & MMC_DATA_STREAM)
+                        cmdr |= MCI_CMDR_STREAM;
+                else if (data->blocks > 1)
+                        cmdr |= MCI_CMDR_MULTI_BLOCK;
+                else
+                        cmdr |= MCI_CMDR_BLOCK;
+
+                if (data->flags & MMC_DATA_READ)
+                        cmdr |= MCI_CMDR_TRDIR_READ;
+        }
+
+        return cmdr;
+}
+
+static void atmci_start_command(struct atmel_mci *host,
+                                struct mmc_command *cmd,
+                                u32 cmd_flags)
+{
+        /* Must read host->cmd after testing event flags */
+        smp_rmb();
+        WARN_ON(host->cmd);
+        host->cmd = cmd;
+
+        dev_vdbg(&host->mmc->class_dev,
+                        "start command: ARGR=0x%08x CMDR=0x%08x\n",
+                        cmd->arg, cmd_flags);
+
+        mci_writel(host, ARGR, cmd->arg);
+        mci_writel(host, CMDR, cmd_flags);
+}
+
+static void send_stop_cmd(struct mmc_host *mmc, struct mmc_data *data)
+{
+        struct atmel_mci *host = mmc_priv(mmc);
+
+        atmci_start_command(host, data->stop, host->stop_cmdr);
+        mci_writel(host, IER, MCI_CMDRDY);
+}
+
+static void atmci_request_end(struct mmc_host *mmc, struct mmc_request *mrq)
+{
+        struct atmel_mci *host = mmc_priv(mmc);
+
+        WARN_ON(host->cmd || host->data);
+        host->mrq = NULL;
+
+        atmci_disable(host);
+
+        mmc_request_done(mmc, mrq);
+}
+
+/*
+ * Returns a mask of interrupt flags to be enabled after the whole
+ * request has been prepared.
+ */
+static u32 atmci_submit_data(struct mmc_host *mmc, struct mmc_data *data)
+{
+        struct atmel_mci        *host = mmc_priv(mmc);
+        u32                     iflags;
+
+        data->error = -EINPROGRESS;
+
+        WARN_ON(host->data);
+        host->sg = NULL;
+        host->data = data;
+
+        mci_writel(host, BLKR, MCI_BCNT(data->blocks)
+                        | MCI_BLKLEN(data->blksz));
+        dev_vdbg(&mmc->class_dev, "BLKR=0x%08x\n",
+                        MCI_BCNT(data->blocks) | MCI_BLKLEN(data->blksz));
+
+        iflags = ATMCI_DATA_ERROR_FLAGS;
+        host->sg = data->sg;
+        host->pio_offset = 0;
+        if (data->flags & MMC_DATA_READ)
+                iflags |= MCI_RXRDY;
+        else
+                iflags |= MCI_TXRDY;
+
+        return iflags;
+}
+
+static void atmci_request(struct mmc_host *mmc, struct mmc_request *mrq)
+{
+        struct atmel_mci        *host = mmc_priv(mmc);
+        struct mmc_data         *data;
+        struct mmc_command      *cmd;
+        u32                     iflags;
+        u32                     cmdflags = 0;
+
+        iflags = mci_readl(host, IMR);
+        if (iflags)
+                dev_warn(&mmc->class_dev, "WARNING: IMR=0x%08x\n",
+                                mci_readl(host, IMR));
+
+        WARN_ON(host->mrq != NULL);
+
+        /*
+         * We may "know" the card is gone even though there's still an
+         * electrical connection. If so, we really need to communicate
+         * this to the MMC core since there won't be any more
+         * interrupts as the card is completely removed. Otherwise,
+         * the MMC core might believe the card is still there even
+         * though the card was just removed very slowly.
+         */
+        if (!host->present) {
+                mrq->cmd->error = -ENOMEDIUM;
+                mmc_request_done(mmc, mrq);
+                return;
+        }
+
+        host->mrq = mrq;
+        host->pending_events = 0;
+        host->completed_events = 0;
+
+        atmci_enable(host);
+
+        /* We don't support multiple blocks of weird lengths. */
+        data = mrq->data;
+        if (data) {
+                if (data->blocks > 1 && data->blksz & 3)
+                        goto fail;
+                atmci_set_timeout(host, data);
+        }
+
+        iflags = MCI_CMDRDY;
+        cmd = mrq->cmd;
+        cmdflags = atmci_prepare_command(mmc, cmd);
+        atmci_start_command(host, cmd, cmdflags);
+
+        if (data)
+                iflags |= atmci_submit_data(mmc, data);
+
+        if (mrq->stop) {
+                host->stop_cmdr = atmci_prepare_command(mmc, mrq->stop);
+                host->stop_cmdr |= MCI_CMDR_STOP_XFER;
+                if (!(data->flags & MMC_DATA_WRITE))
+                        host->stop_cmdr |= MCI_CMDR_TRDIR_READ;
+                if (data->flags & MMC_DATA_STREAM)
+                        host->stop_cmdr |= MCI_CMDR_STREAM;
+                else
+                        host->stop_cmdr |= MCI_CMDR_MULTI_BLOCK;
+        }
+
+        /*
+         * We could have enabled interrupts earlier, but I suspect
+         * that would open up a nice can of interesting race
+         * conditions (e.g. command and data complete, but stop not
+         * prepared yet.)
+         */
+        mci_writel(host, IER, iflags);
+
+        return;
+
+fail:
+        atmci_disable(host);
+        host->mrq = NULL;
+        mrq->cmd->error = -EINVAL;
+        mmc_request_done(mmc, mrq);
+}
+
+static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+        struct atmel_mci        *host = mmc_priv(mmc);
+
+        if (ios->clock) {
+                u32 clkdiv;
+
+                /* Set clock rate */
+                clkdiv = DIV_ROUND_UP(host->bus_hz, 2 * ios->clock) - 1;
+                if (clkdiv > 255) {
+                        dev_warn(&mmc->class_dev,
+                                "clock %u too slow; using %lu\n",
+                                ios->clock, host->bus_hz / (2 * 256));
+                        clkdiv = 255;
+                }
+
+                host->mode_reg = MCI_MR_CLKDIV(clkdiv) | MCI_MR_WRPROOF
+                                        | MCI_MR_RDPROOF;
+        }
+
+        switch (ios->bus_width) {
+        case MMC_BUS_WIDTH_1:
+                host->sdc_reg = 0;
+                break;
+        case MMC_BUS_WIDTH_4:
+                host->sdc_reg = MCI_SDCBUS_4BIT;
+                break;
+        }
+
+        switch (ios->power_mode) {
+        case MMC_POWER_ON:
+                /* Send init sequence (74 clock cycles) */
+                atmci_enable(host);
+                mci_writel(host, CMDR, MCI_CMDR_SPCMD_INIT);
+                while (!(mci_readl(host, SR) & MCI_CMDRDY))
+                        cpu_relax();
+                atmci_disable(host);
+                break;
+        default:
+                /*
+                 * TODO: None of the currently available AVR32-based
+                 * boards allow MMC power to be turned off. Implement
+                 * power control when this can be tested properly.
+                 */
+                break;
+        }
+}
+
+static int atmci_get_ro(struct mmc_host *mmc)
+{
+        int                     read_only = 0;
+        struct atmel_mci        *host = mmc_priv(mmc);
+
+        if (host->wp_pin >= 0) {
+                read_only = gpio_get_value(host->wp_pin);
+                dev_dbg(&mmc->class_dev, "card is %s\n",
+                                read_only ? "read-only" : "read-write");
+        } else {
+                dev_dbg(&mmc->class_dev,
+                        "no pin for checking read-only switch."
+                        " Assuming write-enable.\n");
+        }
+
+        return read_only;
+}
+
+static struct mmc_host_ops atmci_ops = {
+        .request        = atmci_request,
+        .set_ios        = atmci_set_ios,
+        .get_ro         = atmci_get_ro,
+};
+
+static void atmci_command_complete(struct atmel_mci *host,
+                        struct mmc_command *cmd, u32 status)
+{
+        /* Read the response from the card (up to 16 bytes) */
+        cmd->resp[0] = mci_readl(host, RSPR);
+        cmd->resp[1] = mci_readl(host, RSPR);
+        cmd->resp[2] = mci_readl(host, RSPR);
+        cmd->resp[3] = mci_readl(host, RSPR);
+
+        if (status & MCI_RTOE)
+                cmd->error = -ETIMEDOUT;
+        else if ((cmd->flags & MMC_RSP_CRC) && (status & MCI_RCRCE))
+                cmd->error = -EILSEQ;
+        else if (status & (MCI_RINDE | MCI_RDIRE | MCI_RENDE))
+                cmd->error = -EIO;
+        else
+                cmd->error = 0;
+
+        if (cmd->error) {
+                dev_dbg(&host->mmc->class_dev,
+                        "command error: status=0x%08x\n", status);
+
+                if (cmd->data) {
+                        host->data = NULL;
+                        mci_writel(host, IDR, MCI_NOTBUSY
+                                        | MCI_TXRDY | MCI_RXRDY
+                                        | ATMCI_DATA_ERROR_FLAGS);
+                }
+        }
+}
+
+static void atmci_detect_change(unsigned long data)
+{
+        struct atmel_mci *host = (struct atmel_mci *)data;
+        struct mmc_request *mrq = host->mrq;
+        int present;
+
+        /*
+         * atmci_remove() sets detect_pin to -1 before freeing the
+         * interrupt. We must not re-enable the interrupt if it has
+         * been freed.
+         */
+        smp_rmb();
+        if (host->detect_pin < 0)
+                return;
+
+        enable_irq(gpio_to_irq(host->detect_pin));
+        present = !gpio_get_value(host->detect_pin);
+
+        dev_vdbg(&host->pdev->dev, "detect change: %d (was %d)\n",
+                        present, host->present);
+
+        if (present != host->present) {
+                dev_dbg(&host->mmc->class_dev, "card %s\n",
+                        present ? "inserted" : "removed");
+                host->present = present;
+
+                /* Reset controller if card is gone */
+                if (!present) {
+                        mci_writel(host, CR, MCI_CR_SWRST);
+                        mci_writel(host, IDR, ~0UL);
+                        mci_writel(host, CR, MCI_CR_MCIEN);
+                }
+
+                /* Clean up queue if present */
+                if (mrq) {
+                        /*
+                         * Reset controller to terminate any ongoing
+                         * commands or data transfers.
+                         */
+                        mci_writel(host, CR, MCI_CR_SWRST);
+
+                        if (!atmci_is_completed(host, EVENT_CMD_COMPLETE))
+                                mrq->cmd->error = -ENOMEDIUM;
+
+                        if (mrq->data && !atmci_is_completed(host,
+                                                EVENT_DATA_COMPLETE)) {
+                                host->data = NULL;
+                                mrq->data->error = -ENOMEDIUM;
+                        }
+                        if (mrq->stop && !atmci_is_completed(host,
+                                                EVENT_STOP_COMPLETE))
+                                mrq->stop->error = -ENOMEDIUM;
+
+                        host->cmd = NULL;
+                        atmci_request_end(host->mmc, mrq);
+                }
+
+                mmc_detect_change(host->mmc, 0);
+        }
+}
+
+static void atmci_tasklet_func(unsigned long priv)
+{
+        struct mmc_host         *mmc = (struct mmc_host *)priv;
+        struct atmel_mci        *host = mmc_priv(mmc);
+        struct mmc_request      *mrq = host->mrq;
+        struct mmc_data         *data = host->data;
+
+        dev_vdbg(&mmc->class_dev,
+                "tasklet: pending/completed/mask %lx/%lx/%x\n",
+                host->pending_events, host->completed_events,
+                mci_readl(host, IMR));
+
+        if (atmci_test_and_clear_pending(host, EVENT_CMD_COMPLETE)) {
+                /*
+                 * host->cmd must be set to NULL before the interrupt
+                 * handler sees EVENT_CMD_COMPLETE
+                 */
+                host->cmd = NULL;
+                smp_wmb();
+                atmci_set_completed(host, EVENT_CMD_COMPLETE);
+                atmci_command_complete(host, mrq->cmd, host->cmd_status);
+
+                if (!mrq->cmd->error && mrq->stop
+                                && atmci_is_completed(host, EVENT_XFER_COMPLETE)
+                                && !atmci_test_and_set_completed(host,
+                                        EVENT_STOP_SENT))
+                        send_stop_cmd(host->mmc, mrq->data);
+        }
+        if (atmci_test_and_clear_pending(host, EVENT_STOP_COMPLETE)) {
+                /*
+                 * host->cmd must be set to NULL before the interrupt
+                 * handler sees EVENT_STOP_COMPLETE
+                 */
+                host->cmd = NULL;
+                smp_wmb();
+                atmci_set_completed(host, EVENT_STOP_COMPLETE);
+                atmci_command_complete(host, mrq->stop, host->stop_status);
+        }
+        if (atmci_test_and_clear_pending(host, EVENT_DATA_ERROR)) {
+                u32 status = host->data_status;
+
+                dev_vdbg(&mmc->class_dev, "data error: status=%08x\n", status);
+
+                atmci_set_completed(host, EVENT_DATA_ERROR);
+                atmci_set_completed(host, EVENT_DATA_COMPLETE);
+
+                if (status & MCI_DTOE) {
+                        dev_dbg(&mmc->class_dev,
+                                        "data timeout error\n");
+                        data->error = -ETIMEDOUT;
+                } else if (status & MCI_DCRCE) {
+                        dev_dbg(&mmc->class_dev, "data CRC error\n");
+                        data->error = -EILSEQ;
+                } else {
+                        dev_dbg(&mmc->class_dev,
+                                        "data FIFO error (status=%08x)\n",
+                                        status);
+                        data->error = -EIO;
+                }
+
+                if (host->present && data->stop
+                                && atmci_is_completed(host, EVENT_CMD_COMPLETE)
+                                && !atmci_test_and_set_completed(
+                                        host, EVENT_STOP_SENT))
+                        send_stop_cmd(host->mmc, data);
+
+                host->data = NULL;
+        }
+        if (atmci_test_and_clear_pending(host, EVENT_DATA_COMPLETE)) {
+                atmci_set_completed(host, EVENT_DATA_COMPLETE);
+
+                if (!atmci_is_completed(host, EVENT_DATA_ERROR)) {
+                        data->bytes_xfered = data->blocks * data->blksz;
+                        data->error = 0;
+                }
+
+                host->data = NULL;
+        }
+
+        if (host->mrq && !host->cmd && !host->data)
+                atmci_request_end(mmc, host->mrq);
+}
+
+static void atmci_read_data_pio(struct atmel_mci *host)
+{
+        struct scatterlist      *sg = host->sg;
+        void                    *buf = sg_virt(sg);
+        unsigned int            offset = host->pio_offset;
+        struct mmc_data         *data = host->data;
+        u32                     value;
+        u32                     status;
+        unsigned int            nbytes = 0;
+
+        do {
+                value = mci_readl(host, RDR);
+                if (likely(offset + 4 <= sg->length)) {
+                        put_unaligned(value, (u32 *)(buf + offset));
+
+                        offset += 4;
+                        nbytes += 4;
+
+                        if (offset == sg->length) {
+                                host->sg = sg = sg_next(sg);
+                                if (!sg)
+                                        goto done;
+
+                                offset = 0;
+                                buf = sg_virt(sg);
+                        }
+                } else {
+                        unsigned int remaining = sg->length - offset;
+                        memcpy(buf + offset, &value, remaining);
+                        nbytes += remaining;
+
+                        flush_dcache_page(sg_page(sg));
+                        host->sg = sg = sg_next(sg);
+                        if (!sg)
+                                goto done;
+
+                        offset = 4 - remaining;
+                        buf = sg_virt(sg);
+                        memcpy(buf, (u8 *)&value + remaining, offset);
+                        nbytes += offset;
+                }
+
+                status = mci_readl(host, SR);
+                if (status & ATMCI_DATA_ERROR_FLAGS) {
+                        mci_writel(host, IDR, (MCI_NOTBUSY | MCI_RXRDY
+                                                | ATMCI_DATA_ERROR_FLAGS));
+                        host->data_status = status;
+                        atmci_set_pending(host, EVENT_DATA_ERROR);
+                        tasklet_schedule(&host->tasklet);
+                        break;
+                }
+        } while (status & MCI_RXRDY);
+
+        host->pio_offset = offset;
+        data->bytes_xfered += nbytes;
+
+        return;
+
+done:
+        mci_writel(host, IDR, MCI_RXRDY);
+        mci_writel(host, IER, MCI_NOTBUSY);
+        data->bytes_xfered += nbytes;
+        atmci_set_completed(host, EVENT_XFER_COMPLETE);
+        if (data->stop && atmci_is_completed(host, EVENT_CMD_COMPLETE)
+                        && !atmci_test_and_set_completed(host, EVENT_STOP_SENT))
+                send_stop_cmd(host->mmc, data);
+}
+
+static void atmci_write_data_pio(struct atmel_mci *host)
+{
+        struct scatterlist      *sg = host->sg;
+        void                    *buf = sg_virt(sg);
+        unsigned int            offset = host->pio_offset;
+        struct mmc_data         *data = host->data;
+        u32                     value;
+        u32                     status;
+        unsigned int            nbytes = 0;
+
+        do {
+                if (likely(offset + 4 <= sg->length)) {
+                        value = get_unaligned((u32 *)(buf + offset));
+                        mci_writel(host, TDR, value);
+
+                        offset += 4;
+                        nbytes += 4;
+                        if (offset == sg->length) {
+                                host->sg = sg = sg_next(sg);
+                                if (!sg)
+                                        goto done;
+
+                                offset = 0;
+                                buf = sg_virt(sg);
+                        }
+                } else {
+                        unsigned int remaining = sg->length - offset;
+
+                        value = 0;
+                        memcpy(&value, buf + offset, remaining);
+                        nbytes += remaining;
+
+                        host->sg = sg = sg_next(sg);
+                        if (!sg) {
+                                mci_writel(host, TDR, value);
+                                goto done;
+                        }
+
+                        offset = 4 - remaining;
+                        buf = sg_virt(sg);
+                        memcpy((u8 *)&value + remaining, buf, offset);
+                        mci_writel(host, TDR, value);
+                        nbytes += offset;
+                }
+
+                status = mci_readl(host, SR);
+                if (status & ATMCI_DATA_ERROR_FLAGS) {
+                        mci_writel(host, IDR, (MCI_NOTBUSY | MCI_TXRDY
+                                                | ATMCI_DATA_ERROR_FLAGS));
+                        host->data_status = status;
+                        atmci_set_pending(host, EVENT_DATA_ERROR);
+                        tasklet_schedule(&host->tasklet);
+                        break;
+                }
+        } while (status & MCI_TXRDY);
+
+        host->pio_offset = offset;
+        data->bytes_xfered += nbytes;
+
+        return;
+
+done:
+        mci_writel(host, IDR, MCI_TXRDY);
+        mci_writel(host, IER, MCI_NOTBUSY);
+        data->bytes_xfered += nbytes;
+        atmci_set_completed(host, EVENT_XFER_COMPLETE);
+        if (data->stop && atmci_is_completed(host, EVENT_CMD_COMPLETE)
+                        && !atmci_test_and_set_completed(host, EVENT_STOP_SENT))
+                send_stop_cmd(host->mmc, data);
+}
+
+static void atmci_cmd_interrupt(struct mmc_host *mmc, u32 status)
+{
+        struct atmel_mci        *host = mmc_priv(mmc);
+
+        mci_writel(host, IDR, MCI_CMDRDY);
+
+        if (atmci_is_completed(host, EVENT_STOP_SENT)) {
+                host->stop_status = status;
+                atmci_set_pending(host, EVENT_STOP_COMPLETE);
+        } else {
+                host->cmd_status = status;
+                atmci_set_pending(host, EVENT_CMD_COMPLETE);
+        }
+
+        tasklet_schedule(&host->tasklet);
+}
+
+static irqreturn_t atmci_interrupt(int irq, void *dev_id)
+{
+        struct mmc_host         *mmc = dev_id;
+        struct atmel_mci        *host = mmc_priv(mmc);
+        u32                     status, mask, pending;
+        unsigned int            pass_count = 0;
+
+        spin_lock(&mmc->lock);
+
+        do {
+                status = mci_readl(host, SR);
+                mask = mci_readl(host, IMR);
+                pending = status & mask;
+                if (!pending)
+                        break;
+
+                if (pending & ATMCI_DATA_ERROR_FLAGS) {
+                        mci_writel(host, IDR, ATMCI_DATA_ERROR_FLAGS
+                                        | MCI_RXRDY | MCI_TXRDY);
+                        pending &= mci_readl(host, IMR);
+                        host->data_status = status;
+                        atmci_set_pending(host, EVENT_DATA_ERROR);
+                        tasklet_schedule(&host->tasklet);
+                }
+                if (pending & MCI_NOTBUSY) {
+                        mci_writel(host, IDR, (MCI_NOTBUSY
+                                               | ATMCI_DATA_ERROR_FLAGS));
+                        atmci_set_pending(host, EVENT_DATA_COMPLETE);
+                        tasklet_schedule(&host->tasklet);
+                }
+                if (pending & MCI_RXRDY)
+                        atmci_read_data_pio(host);
+                if (pending & MCI_TXRDY)
+                        atmci_write_data_pio(host);
+
+                if (pending & MCI_CMDRDY)
+                        atmci_cmd_interrupt(mmc, status);
+        } while (pass_count++ < 5);
+
+        spin_unlock(&mmc->lock);
+
+        return pass_count ? IRQ_HANDLED : IRQ_NONE;
+}
+
+static irqreturn_t atmci_detect_interrupt(int irq, void *dev_id)
+{
+        struct mmc_host         *mmc = dev_id;
+        struct atmel_mci        *host = mmc_priv(mmc);
+
+        /*
+         * Disable interrupts until the pin has stabilized and check
+         * the state then. Use mod_timer() since we may be in the
+         * middle of the timer routine when this interrupt triggers.
+         */
+        disable_irq_nosync(irq);
+        mod_timer(&host->detect_timer, jiffies + msecs_to_jiffies(20));
+
+        return IRQ_HANDLED;
+}
+
+static int __init atmci_probe(struct platform_device *pdev)
+{
+        struct mci_platform_data        *pdata;
+        struct atmel_mci *host;
+        struct mmc_host *mmc;
+        struct resource *regs;
+        int irq;
+        int ret;
+
+        regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!regs)
+                return -ENXIO;
+        pdata = pdev->dev.platform_data;
+        if (!pdata)
+                return -ENXIO;
+        irq = platform_get_irq(pdev, 0);
+        if (irq < 0)
+                return irq;
+
+        mmc = mmc_alloc_host(sizeof(struct atmel_mci), &pdev->dev);
+        if (!mmc)
+                return -ENOMEM;
+
+        host = mmc_priv(mmc);
+        host->pdev = pdev;
+        host->mmc = mmc;
+        host->detect_pin = pdata->detect_pin;
+        host->wp_pin = pdata->wp_pin;
+
+        host->mck = clk_get(&pdev->dev, "mci_clk");
+        if (IS_ERR(host->mck)) {
+                ret = PTR_ERR(host->mck);
+                goto err_clk_get;
+        }
+
+        ret = -ENOMEM;
+        host->regs = ioremap(regs->start, regs->end - regs->start + 1);
+        if (!host->regs)
+                goto err_ioremap;
+
+        clk_enable(host->mck);
+        mci_writel(host, CR, MCI_CR_SWRST);
+        host->bus_hz = clk_get_rate(host->mck);
+        clk_disable(host->mck);
+
+        host->mapbase = regs->start;
+
+        mmc->ops = &atmci_ops;
+        mmc->f_min = (host->bus_hz + 511) / 512;
+        mmc->f_max = host->bus_hz / 2;
+        mmc->ocr_avail  = MMC_VDD_32_33 | MMC_VDD_33_34;
+        mmc->caps |= MMC_CAP_4_BIT_DATA;
+
+        mmc->max_hw_segs = 64;
+        mmc->max_phys_segs = 64;
+        mmc->max_req_size = 32768 * 512;
+        mmc->max_blk_size = 32768;
+        mmc->max_blk_count = 512;
+
+        tasklet_init(&host->tasklet, atmci_tasklet_func, (unsigned long)mmc);
+
+        ret = request_irq(irq, atmci_interrupt, 0, pdev->dev.bus_id, mmc);
+        if (ret)
+                goto err_request_irq;
+
+        /* Assume card is present if we don't have a detect pin */
+        host->present = 1;
+        if (host->detect_pin >= 0) {
+                if (gpio_request(host->detect_pin, "mmc_detect")) {
+                        dev_dbg(&mmc->class_dev, "no detect pin available\n");
+                        host->detect_pin = -1;
+                } else {
+                        host->present = !gpio_get_value(host->detect_pin);
+                }
+        }
+        if (host->wp_pin >= 0) {
+                if (gpio_request(host->wp_pin, "mmc_wp")) {
+                        dev_dbg(&mmc->class_dev, "no WP pin available\n");
+                        host->wp_pin = -1;
+                }
+        }
+
+        platform_set_drvdata(pdev, host);
+
+        mmc_add_host(mmc);
+
+        if (host->detect_pin >= 0) {
+                setup_timer(&host->detect_timer, atmci_detect_change,
+                                (unsigned long)host);
+
+                ret = request_irq(gpio_to_irq(host->detect_pin),
+                                atmci_detect_interrupt,
+                                IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
+                                "mmc-detect", mmc);
+                if (ret) {
+                        dev_dbg(&mmc->class_dev,
+                                "could not request IRQ %d for detect pin\n",
+                                gpio_to_irq(host->detect_pin));
+                        gpio_free(host->detect_pin);
+                        host->detect_pin = -1;
+                }
+        }
+
+        dev_info(&mmc->class_dev,
+                        "Atmel MCI controller at 0x%08lx irq %d\n",
+                        host->mapbase, irq);
+
+        return 0;
+
+err_request_irq:
+        iounmap(host->regs);
+err_ioremap:
+        clk_put(host->mck);
+err_clk_get:
+        mmc_free_host(mmc);
+        return ret;
+}
+
+static int __exit atmci_remove(struct platform_device *pdev)
+{
+        struct atmel_mci *host = platform_get_drvdata(pdev);
+
+        platform_set_drvdata(pdev, NULL);
+
+        if (host) {
+                if (host->detect_pin >= 0) {
+                        int pin = host->detect_pin;
+
+                        /* Make sure the timer doesn't enable the interrupt */
+                        host->detect_pin = -1;
+                        smp_wmb();
+
+                        free_irq(gpio_to_irq(pin), host->mmc);
+                        del_timer_sync(&host->detect_timer);
+                        gpio_free(pin);
+                }
+
+                mmc_remove_host(host->mmc);
+
+                clk_enable(host->mck);
+                mci_writel(host, IDR, ~0UL);
+                mci_writel(host, CR, MCI_CR_MCIDIS);
+                mci_readl(host, SR);
+                clk_disable(host->mck);
+
+                if (host->wp_pin >= 0)
+                        gpio_free(host->wp_pin);
+
+                free_irq(platform_get_irq(pdev, 0), host->mmc);
+                iounmap(host->regs);
+
+                clk_put(host->mck);
+
+                mmc_free_host(host->mmc);
+        }
+        return 0;
+}
+
+static struct platform_driver atmci_driver = {
+        .remove         = __exit_p(atmci_remove),
+        .driver         = {
+                .name           = "atmel_mci",
+        },
+};
+
+static int __init atmci_init(void)
+{
+        return platform_driver_probe(&atmci_driver, atmci_probe);
+}
+
+static void __exit atmci_exit(void)
+{
+        platform_driver_unregister(&atmci_driver);
+}
+
+module_init(atmci_init);
+module_exit(atmci_exit);
+
+MODULE_DESCRIPTION("Atmel Multimedia Card Interface driver");
+MODULE_AUTHOR("Haavard Skinnemoen <haavard.skinnemoen@atmel.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c
index cc5f7bc546af..3f15eb204895 100644
--- a/drivers/mmc/host/au1xmmc.c
+++ b/drivers/mmc/host/au1xmmc.c
@@ -21,7 +21,7 @@
  * published by the Free Software Foundation.
  */
 
-/* Why is a timer used to detect insert events?
+/* Why don't we use the SD controllers' carddetect feature?
  *
  * From the AU1100 MMC application guide:
  * If the Au1100-based design is intended to support both MultiMediaCards
@@ -30,8 +30,6 @@
  * In doing so, a MMC card never enters SPI-mode communications,
  * but now the SecureDigital card-detect feature of CD/DAT3 is ineffective
  * (the low to high transition will not occur).
- *
- * So we use the timer to check the status manually.
  */
 
 #include <linux/module.h>
@@ -41,51 +39,110 @@
 #include <linux/interrupt.h>
 #include <linux/dma-mapping.h>
 #include <linux/scatterlist.h>
-
+#include <linux/leds.h>
 #include <linux/mmc/host.h>
+
 #include <asm/io.h>
 #include <asm/mach-au1x00/au1000.h>
 #include <asm/mach-au1x00/au1xxx_dbdma.h>
 #include <asm/mach-au1x00/au1100_mmc.h>
 
-#include <au1xxx.h>
-#include "au1xmmc.h"
-
 #define DRIVER_NAME "au1xxx-mmc"
 
 /* Set this to enable special debugging macros */
+/* #define DEBUG */
 
 #ifdef DEBUG
-#define DBG(fmt, idx, args...) printk("au1xx(%d): DEBUG: " fmt, idx, ##args)
+#define DBG(fmt, idx, args...)  \
+        printk(KERN_DEBUG "au1xmmc(%d): DEBUG: " fmt, idx, ##args)
 #else
-#define DBG(fmt, idx, args...)
+#define DBG(fmt, idx, args...) do {} while (0)
 #endif
 
-const struct {
+/* Hardware definitions */
+#define AU1XMMC_DESCRIPTOR_COUNT 1
+#define AU1XMMC_DESCRIPTOR_SIZE  2048
+
+#define AU1XMMC_OCR (MMC_VDD_27_28 | MMC_VDD_28_29 | MMC_VDD_29_30 | \
+                     MMC_VDD_30_31 | MMC_VDD_31_32 | MMC_VDD_32_33 | \
+                     MMC_VDD_33_34 | MMC_VDD_34_35 | MMC_VDD_35_36)
+
+/* This gives us a hard value for the stop command that we can write directly
+ * to the command register.
+ */
+#define STOP_CMD        \
+        (SD_CMD_RT_1B | SD_CMD_CT_7 | (0xC << SD_CMD_CI_SHIFT) | SD_CMD_GO)
+
+/* This is the set of interrupts that we configure by default. */
+#define AU1XMMC_INTERRUPTS                              \
+        (SD_CONFIG_SC | SD_CONFIG_DT | SD_CONFIG_RAT |  \
+         SD_CONFIG_CR | SD_CONFIG_I)
+
+/* The poll event (looking for insert/remove events runs twice a second. */
+#define AU1XMMC_DETECT_TIMEOUT (HZ/2)
+
+struct au1xmmc_host {
+        struct mmc_host *mmc;
+        struct mmc_request *mrq;
+
+        u32 flags;
         u32 iobase;
-        u32 tx_devid, rx_devid;
-        u16 bcsrpwr;
-        u16 bcsrstatus;
-        u16 wpstatus;
-} au1xmmc_card_table[] = {
-        { SD0_BASE, DSCR_CMD0_SDMS_TX0, DSCR_CMD0_SDMS_RX0,
-          BCSR_BOARD_SD0PWR, BCSR_INT_SD0INSERT, BCSR_STATUS_SD0WP },
-#ifndef CONFIG_MIPS_DB1200
-        { SD1_BASE, DSCR_CMD0_SDMS_TX1, DSCR_CMD0_SDMS_RX1,
-          BCSR_BOARD_DS1PWR, BCSR_INT_SD1INSERT, BCSR_STATUS_SD1WP }
-#endif
-};
+        u32 clock;
+        u32 bus_width;
+        u32 power_mode;
 
-#define AU1XMMC_CONTROLLER_COUNT (ARRAY_SIZE(au1xmmc_card_table))
+        int status;
 
-/* This array stores pointers for the hosts (used by the IRQ handler) */
-struct au1xmmc_host *au1xmmc_hosts[AU1XMMC_CONTROLLER_COUNT];
-static int dma = 1;
+        struct {
+                int len;
+                int dir;
+        } dma;
 
-#ifdef MODULE
-module_param(dma, bool, 0);
-MODULE_PARM_DESC(dma, "Use DMA engine for data transfers (0 = disabled)");
-#endif
+        struct {
+                int index;
+                int offset;
+                int len;
+        } pio;
+
+        u32 tx_chan;
+        u32 rx_chan;
+
+        int irq;
+
+        struct tasklet_struct finish_task;
+        struct tasklet_struct data_task;
+        struct au1xmmc_platform_data *platdata;
+        struct platform_device *pdev;
+        struct resource *ioarea;
+};
+
+/* Status flags used by the host structure */
+#define HOST_F_XMIT     0x0001
+#define HOST_F_RECV     0x0002
+#define HOST_F_DMA      0x0010
+#define HOST_F_ACTIVE   0x0100
+#define HOST_F_STOP     0x1000
+
+#define HOST_S_IDLE     0x0001
+#define HOST_S_CMD      0x0002
+#define HOST_S_DATA     0x0003
+#define HOST_S_STOP     0x0004
+
+/* Easy access macros */
+#define HOST_STATUS(h)  ((h)->iobase + SD_STATUS)
+#define HOST_CONFIG(h)  ((h)->iobase + SD_CONFIG)
+#define HOST_ENABLE(h)  ((h)->iobase + SD_ENABLE)
+#define HOST_TXPORT(h)  ((h)->iobase + SD_TXPORT)
+#define HOST_RXPORT(h)  ((h)->iobase + SD_RXPORT)
+#define HOST_CMDARG(h)  ((h)->iobase + SD_CMDARG)
+#define HOST_BLKSIZE(h) ((h)->iobase + SD_BLKSIZE)
+#define HOST_CMD(h)     ((h)->iobase + SD_CMD)
+#define HOST_CONFIG2(h) ((h)->iobase + SD_CONFIG2)
+#define HOST_TIMEOUT(h) ((h)->iobase + SD_TIMEOUT)
+#define HOST_DEBUG(h)   ((h)->iobase + SD_DEBUG)
+
+#define DMA_CHANNEL(h)  \
+        (((h)->flags & HOST_F_XMIT) ? (h)->tx_chan : (h)->rx_chan)
 
 static inline void IRQ_ON(struct au1xmmc_host *host, u32 mask)
 {
@@ -119,14 +176,13 @@ static inline void IRQ_OFF(struct au1xmmc_host *host, u32 mask)
 
 static inline void SEND_STOP(struct au1xmmc_host *host)
 {
-
-        /* We know the value of CONFIG2, so avoid a read we don't need */
-        u32 mask = SD_CONFIG2_EN;
+        u32 config2;
 
         WARN_ON(host->status != HOST_S_DATA);
         host->status = HOST_S_STOP;
 
-        au_writel(mask | SD_CONFIG2_DF, HOST_CONFIG2(host));
+        config2 = au_readl(HOST_CONFIG2(host));
+        au_writel(config2 | SD_CONFIG2_DF, HOST_CONFIG2(host));
         au_sync();
 
         /* Send the stop commmand */
@@ -135,35 +191,36 @@ static inline void SEND_STOP(struct au1xmmc_host *host)
 
 static void au1xmmc_set_power(struct au1xmmc_host *host, int state)
 {
-
-        u32 val = au1xmmc_card_table[host->id].bcsrpwr;
-
-        bcsr->board &= ~val;
-        if (state) bcsr->board |= val;
-
-        au_sync_delay(1);
+        if (host->platdata && host->platdata->set_power)
+                host->platdata->set_power(host->mmc, state);
 }
 
-static inline int au1xmmc_card_inserted(struct au1xmmc_host *host)
+static int au1xmmc_card_inserted(struct mmc_host *mmc)
 {
-        return (bcsr->sig_status & au1xmmc_card_table[host->id].bcsrstatus)
-                ? 1 : 0;
+        struct au1xmmc_host *host = mmc_priv(mmc);
+
+        if (host->platdata && host->platdata->card_inserted)
+                return !!host->platdata->card_inserted(host->mmc);
+
+        return -ENOSYS;
 }
 
 static int au1xmmc_card_readonly(struct mmc_host *mmc)
 {
         struct au1xmmc_host *host = mmc_priv(mmc);
-        return (bcsr->status & au1xmmc_card_table[host->id].wpstatus)
-                ? 1 : 0;
+
+        if (host->platdata && host->platdata->card_readonly)
+                return !!host->platdata->card_readonly(mmc);
+
+        return -ENOSYS;
 }
 
 static void au1xmmc_finish_request(struct au1xmmc_host *host)
 {
-
         struct mmc_request *mrq = host->mrq;
 
         host->mrq = NULL;
-        host->flags &= HOST_F_ACTIVE;
+        host->flags &= HOST_F_ACTIVE | HOST_F_DMA;
 
         host->dma.len = 0;
         host->dma.dir = 0;
@@ -174,8 +231,6 @@ static void au1xmmc_finish_request(struct au1xmmc_host *host)
 
         host->status = HOST_S_IDLE;
 
-        bcsr->disk_leds |= (1 << 8);
-
         mmc_request_done(host->mmc, mrq);
 }
 
@@ -235,18 +290,14 @@ static int au1xmmc_send_command(struct au1xmmc_host *host, int wait,
         au_sync();
 
         /* Wait for the command to go on the line */
-
-        while(1) {
-                if (!(au_readl(HOST_CMD(host)) & SD_CMD_GO))
-                        break;
-        }
+        while (au_readl(HOST_CMD(host)) & SD_CMD_GO)
+                /* nop */;
 
         /* Wait for the command to come back */
-
         if (wait) {
                 u32 status = au_readl(HOST_STATUS(host));
 
-                while(!(status & SD_STATUS_CR))
+                while (!(status & SD_STATUS_CR))
                         status = au_readl(HOST_STATUS(host));
 
                 /* Clear the CR status */
@@ -260,12 +311,11 @@ static int au1xmmc_send_command(struct au1xmmc_host *host, int wait,
 
 static void au1xmmc_data_complete(struct au1xmmc_host *host, u32 status)
 {
-
         struct mmc_request *mrq = host->mrq;
         struct mmc_data *data;
         u32 crc;
 
-        WARN_ON(host->status != HOST_S_DATA && host->status != HOST_S_STOP);
+        WARN_ON((host->status != HOST_S_DATA) && (host->status != HOST_S_STOP));
 
         if (host->mrq == NULL)
                 return;
@@ -276,15 +326,13 @@ static void au1xmmc_data_complete(struct au1xmmc_host *host, u32 status)
                 status = au_readl(HOST_STATUS(host));
 
         /* The transaction is really over when the SD_STATUS_DB bit is clear */
-
-        while((host->flags & HOST_F_XMIT) && (status & SD_STATUS_DB))
+        while ((host->flags & HOST_F_XMIT) && (status & SD_STATUS_DB))
                 status = au_readl(HOST_STATUS(host));
 
         data->error = 0;
         dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len, host->dma.dir);
 
         /* Process any errors */
-
         crc = (status & (SD_STATUS_WC | SD_STATUS_RC));
         if (host->flags & HOST_F_XMIT)
                 crc |= ((status & 0x07) == 0x02) ? 0 : 1;
@@ -299,16 +347,16 @@ static void au1xmmc_data_complete(struct au1xmmc_host *host, u32 status)
 
         if (!data->error) {
                 if (host->flags & HOST_F_DMA) {
+#ifdef CONFIG_SOC_AU1200        /* DBDMA */
                         u32 chan = DMA_CHANNEL(host);
 
-                        chan_tab_t *c = *((chan_tab_t **) chan);
+                        chan_tab_t *c = *((chan_tab_t **)chan);
                         au1x_dma_chan_t *cp = c->chan_ptr;
                         data->bytes_xfered = cp->ddma_bytecnt;
-                }
-                else
+#endif
+                } else
                         data->bytes_xfered =
-                                (data->blocks * data->blksz) -
-                                host->pio.len;
+                                (data->blocks * data->blksz) - host->pio.len;
         }
 
         au1xmmc_finish_request(host);
@@ -316,7 +364,7 @@ static void au1xmmc_data_complete(struct au1xmmc_host *host, u32 status)
 
 static void au1xmmc_tasklet_data(unsigned long param)
 {
-        struct au1xmmc_host *host = (struct au1xmmc_host *) param;
+        struct au1xmmc_host *host = (struct au1xmmc_host *)param;
 
         u32 status = au_readl(HOST_STATUS(host));
         au1xmmc_data_complete(host, status);
@@ -326,11 +374,10 @@ static void au1xmmc_tasklet_data(unsigned long param)
 
 static void au1xmmc_send_pio(struct au1xmmc_host *host)
 {
-
-        struct mmc_data *data = 0;
-        int sg_len, max, count = 0;
-        unsigned char *sg_ptr;
-        u32 status = 0;
+        struct mmc_data *data;
+        int sg_len, max, count;
+        unsigned char *sg_ptr, val;
+        u32 status;
         struct scatterlist *sg;
 
         data = host->mrq->data;
@@ -345,14 +392,12 @@ static void au1xmmc_send_pio(struct au1xmmc_host *host)
         /* This is the space left inside the buffer */
         sg_len = data->sg[host->pio.index].length - host->pio.offset;
 
-        /* Check to if we need less then the size of the sg_buffer */
-
+        /* Check if we need less than the size of the sg_buffer */
         max = (sg_len > host->pio.len) ? host->pio.len : sg_len;
-        if (max > AU1XMMC_MAX_TRANSFER) max = AU1XMMC_MAX_TRANSFER;
-
-        for(count = 0; count < max; count++ ) {
-                unsigned char val;
+        if (max > AU1XMMC_MAX_TRANSFER)
+                max = AU1XMMC_MAX_TRANSFER;
 
+        for (count = 0; count < max; count++) {
                 status = au_readl(HOST_STATUS(host));
 
                 if (!(status & SD_STATUS_TH))
@@ -360,7 +405,7 @@ static void au1xmmc_send_pio(struct au1xmmc_host *host)
 
                 val = *sg_ptr++;
 
-                au_writel((unsigned long) val, HOST_TXPORT(host));
+                au_writel((unsigned long)val, HOST_TXPORT(host));
                 au_sync();
         }
 
@@ -384,11 +429,10 @@ static void au1xmmc_send_pio(struct au1xmmc_host *host)
 
 static void au1xmmc_receive_pio(struct au1xmmc_host *host)
 {
-
-        struct mmc_data *data = 0;
-        int sg_len = 0, max = 0, count = 0;
-        unsigned char *sg_ptr = 0;
-        u32 status = 0;
+        struct mmc_data *data;
+        int max, count, sg_len = 0;
+        unsigned char *sg_ptr = NULL;
+        u32 status, val;
         struct scatterlist *sg;
 
         data = host->mrq->data;
@@ -405,33 +449,33 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host)
                 /* This is the space left inside the buffer */
                 sg_len = sg_dma_len(&data->sg[host->pio.index]) - host->pio.offset;
 
-                /* Check to if we need less then the size of the sg_buffer */
-                if (sg_len < max) max = sg_len;
+                /* Check if we need less than the size of the sg_buffer */
+                if (sg_len < max)
+                        max = sg_len;
         }
 
         if (max > AU1XMMC_MAX_TRANSFER)
                 max = AU1XMMC_MAX_TRANSFER;
 
-        for(count = 0; count < max; count++ ) {
-                u32 val;
+        for (count = 0; count < max; count++) {
                 status = au_readl(HOST_STATUS(host));
 
                 if (!(status & SD_STATUS_NE))
                         break;
 
                 if (status & SD_STATUS_RC) {
-                        DBG("RX CRC Error [%d + %d].\n", host->id,
+                        DBG("RX CRC Error [%d + %d].\n", host->pdev->id,
                                         host->pio.len, count);
                         break;
                 }
 
                 if (status & SD_STATUS_RO) {
-                        DBG("RX Overrun [%d + %d]\n", host->id,
+                        DBG("RX Overrun [%d + %d]\n", host->pdev->id,
                                         host->pio.len, count);
                         break;
                 }
                 else if (status & SD_STATUS_RU) {
-                        DBG("RX Underrun [%d + %d]\n", host->id,
+                        DBG("RX Underrun [%d + %d]\n", host->pdev->id,
                                         host->pio.len,  count);
                         break;
                 }
@@ -439,7 +483,7 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host)
                 val = au_readl(HOST_RXPORT(host));
 
                 if (sg_ptr)
-                        *sg_ptr++ = (unsigned char) (val & 0xFF);
+                        *sg_ptr++ = (unsigned char)(val & 0xFF);
         }
 
         host->pio.len -= count;
@@ -451,7 +495,7 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host)
         }
 
         if (host->pio.len == 0) {
-                //IRQ_OFF(host, SD_CONFIG_RA | SD_CONFIG_RF);
+                /* IRQ_OFF(host, SD_CONFIG_RA | SD_CONFIG_RF); */
                 IRQ_OFF(host, SD_CONFIG_NE);
 
                 if (host->flags & HOST_F_STOP)
@@ -461,17 +505,15 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host)
         }
 }
 
-/* static void au1xmmc_cmd_complete
-   This is called when a command has been completed - grab the response
-   and check for errors.  Then start the data transfer if it is indicated.
-*/
-
+/* This is called when a command has been completed - grab the response
+ * and check for errors.  Then start the data transfer if it is indicated.
+ */
 static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
 {
-
         struct mmc_request *mrq = host->mrq;
         struct mmc_command *cmd;
-        int trans;
+        u32 r[4];
+        int i, trans;
 
         if (!host->mrq)
                 return;
@@ -481,9 +523,6 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
 
         if (cmd->flags & MMC_RSP_PRESENT) {
                 if (cmd->flags & MMC_RSP_136) {
-                        u32 r[4];
-                        int i;
-
                         r[0] = au_readl(host->iobase + SD_RESP3);
                         r[1] = au_readl(host->iobase + SD_RESP2);
                         r[2] = au_readl(host->iobase + SD_RESP1);
@@ -491,10 +530,9 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
 
                         /* The CRC is omitted from the response, so really
                          * we only got 120 bytes, but the engine expects
-                         * 128 bits, so we have to shift things up
+                         * 128 bits, so we have to shift things up.
                          */
-
-                        for(i = 0; i < 4; i++) {
+                        for (i = 0; i < 4; i++) {
                                 cmd->resp[i] = (r[i] & 0x00FFFFFF) << 8;
                                 if (i != 3)
                                         cmd->resp[i] |= (r[i + 1] & 0xFF000000) >> 24;
@@ -505,22 +543,20 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
                          * our response omits the CRC, our data ends up
                          * being shifted 8 bits to the right.  In this case,
                          * that means that the OSR data starts at bit 31,
-                         * so we can just read RESP0 and return that
+                         * so we can just read RESP0 and return that.
                          */
                         cmd->resp[0] = au_readl(host->iobase + SD_RESP0);
                 }
         }
 
         /* Figure out errors */
-
         if (status & (SD_STATUS_SC | SD_STATUS_WC | SD_STATUS_RC))
                 cmd->error = -EILSEQ;
 
         trans = host->flags & (HOST_F_XMIT | HOST_F_RECV);
 
         if (!trans || cmd->error) {
-
-                IRQ_OFF(host, SD_CONFIG_TH | SD_CONFIG_RA|SD_CONFIG_RF);
+                IRQ_OFF(host, SD_CONFIG_TH | SD_CONFIG_RA | SD_CONFIG_RF);
                 tasklet_schedule(&host->finish_task);
                 return;
         }
@@ -528,6 +564,7 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
         host->status = HOST_S_DATA;
 
         if (host->flags & HOST_F_DMA) {
+#ifdef CONFIG_SOC_AU1200        /* DBDMA */
                 u32 channel = DMA_CHANNEL(host);
 
                 /* Start the DMA as soon as the buffer gets something in it */
@@ -540,23 +577,21 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
                 }
 
                 au1xxx_dbdma_start(channel);
+#endif
         }
 }
 
 static void au1xmmc_set_clock(struct au1xmmc_host *host, int rate)
 {
-
         unsigned int pbus = get_au1x00_speed();
         unsigned int divisor;
         u32 config;
 
         /* From databook:
-           divisor = ((((cpuclock / sbus_divisor) / 2) / mmcclock) / 2) - 1
-        */
-
+         * divisor = ((((cpuclock / sbus_divisor) / 2) / mmcclock) / 2) - 1
+         */
         pbus /= ((au_readl(SYS_POWERCTRL) & 0x3) + 2);
         pbus /= 2;
-
         divisor = ((pbus / rate) / 2) - 1;
 
         config = au_readl(HOST_CONFIG(host));
@@ -568,15 +603,11 @@ static void au1xmmc_set_clock(struct au1xmmc_host *host, int rate)
         au_sync();
 }
 
-static int
-au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data)
+static int au1xmmc_prepare_data(struct au1xmmc_host *host,
+                                struct mmc_data *data)
 {
-
         int datalen = data->blocks * data->blksz;
 
-        if (dma != 0)
-                host->flags |= HOST_F_DMA;
-
         if (data->flags & MMC_DATA_READ)
                 host->flags |= HOST_F_RECV;
         else
@@ -596,12 +627,13 @@ au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data)
         au_writel(data->blksz - 1, HOST_BLKSIZE(host));
 
         if (host->flags & HOST_F_DMA) {
+#ifdef CONFIG_SOC_AU1200        /* DBDMA */
                 int i;
                 u32 channel = DMA_CHANNEL(host);
 
                 au1xxx_dbdma_stop(channel);
 
-                for(i = 0; i < host->dma.len; i++) {
+                for (i = 0; i < host->dma.len; i++) {
                         u32 ret = 0, flags = DDMA_FLAGS_NOIE;
                         struct scatterlist *sg = &data->sg[i];
                         int sg_len = sg->length;
@@ -611,23 +643,21 @@ au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data)
                         if (i == host->dma.len - 1)
                                 flags = DDMA_FLAGS_IE;
 
-                        if (host->flags & HOST_F_XMIT){
-                                ret = au1xxx_dbdma_put_source_flags(channel,
-                                        (void *) sg_virt(sg), len, flags);
-                        }
-                        else {
-                                ret = au1xxx_dbdma_put_dest_flags(channel,
-                                        (void *) sg_virt(sg),
-                                        len, flags);
+                        if (host->flags & HOST_F_XMIT) {
+                                ret = au1xxx_dbdma_put_source_flags(channel,
+                                        (void *)sg_virt(sg), len, flags);
+                        } else {
+                                ret = au1xxx_dbdma_put_dest_flags(channel,
+                                        (void *)sg_virt(sg), len, flags);
                         }
 
-                        if (!ret)
+                        if (!ret)
                                 goto dataerr;
 
                         datalen -= len;
                 }
-        }
-        else {
+#endif
+        } else {
                 host->pio.index = 0;
                 host->pio.offset = 0;
                 host->pio.len = datalen;
@@ -636,25 +666,21 @@ au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data)
                         IRQ_ON(host, SD_CONFIG_TH);
                 else
                         IRQ_ON(host, SD_CONFIG_NE);
-                        //IRQ_ON(host, SD_CONFIG_RA|SD_CONFIG_RF);
+                        /* IRQ_ON(host, SD_CONFIG_RA | SD_CONFIG_RF); */
         }
 
         return 0;
 
- dataerr:
-        dma_unmap_sg(mmc_dev(host->mmc),data->sg,data->sg_len,host->dma.dir);
+dataerr:
+        dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
+                        host->dma.dir);
         return -ETIMEDOUT;
 }
 
-/* static void au1xmmc_request
-   This actually starts a command or data transaction
-*/
-
+/* This actually starts a command or data transaction */
 static void au1xmmc_request(struct mmc_host* mmc, struct mmc_request* mrq)
 {
-
         struct au1xmmc_host *host = mmc_priv(mmc);
-        unsigned int flags = 0;
         int ret = 0;
 
         WARN_ON(irqs_disabled());
@@ -663,11 +689,15 @@ static void au1xmmc_request(struct mmc_host* mmc, struct mmc_request* mrq)
         host->mrq = mrq;
         host->status = HOST_S_CMD;
 
-        bcsr->disk_leds &= ~(1 << 8);
+        /* fail request immediately if no card is present */
+        if (0 == au1xmmc_card_inserted(mmc)) {
+                mrq->cmd->error = -ENOMEDIUM;
+                au1xmmc_finish_request(host);
+                return;
+        }
 
         if (mrq->data) {
                 FLUSH_FIFO(host);
-                flags = mrq->data->flags;
                 ret = au1xmmc_prepare_data(host, mrq->data);
         }
 
@@ -682,7 +712,6 @@ static void au1xmmc_request(struct mmc_host* mmc, struct mmc_request* mrq)
 
 static void au1xmmc_reset_controller(struct au1xmmc_host *host)
 {
-
         /* Apply the clock */
         au_writel(SD_ENABLE_CE, HOST_ENABLE(host));
         au_sync_delay(1);
@@ -712,9 +741,10 @@ static void au1xmmc_reset_controller(struct au1xmmc_host *host)
 }
 
 
-static void au1xmmc_set_ios(struct mmc_host* mmc, struct mmc_ios* ios)
+static void au1xmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 {
         struct au1xmmc_host *host = mmc_priv(mmc);
+        u32 config2;
 
         if (ios->power_mode == MMC_POWER_OFF)
                 au1xmmc_set_power(host, 0);
@@ -726,21 +756,18 @@ static void au1xmmc_set_ios(struct mmc_host* mmc, struct mmc_ios* ios)
                 au1xmmc_set_clock(host, ios->clock);
                 host->clock = ios->clock;
         }
-}
-
-static void au1xmmc_dma_callback(int irq, void *dev_id)
-{
-        struct au1xmmc_host *host = (struct au1xmmc_host *) dev_id;
-
-        /* Avoid spurious interrupts */
 
-        if (!host->mrq)
-                return;
-
-        if (host->flags & HOST_F_STOP)
-                SEND_STOP(host);
-
-        tasklet_schedule(&host->data_task);
+        config2 = au_readl(HOST_CONFIG2(host));
+        switch (ios->bus_width) {
+        case MMC_BUS_WIDTH_4:
+                config2 |= SD_CONFIG2_WB;
+                break;
+        case MMC_BUS_WIDTH_1:
+                config2 &= ~SD_CONFIG2_WB;
+                break;
+        }
+        au_writel(config2, HOST_CONFIG2(host));
+        au_sync();
 }
 
 #define STATUS_TIMEOUT (SD_STATUS_RAT | SD_STATUS_DT)
@@ -749,245 +776,354 @@ static void au1xmmc_dma_callback(int irq, void *dev_id)
 
 static irqreturn_t au1xmmc_irq(int irq, void *dev_id)
 {
-
+        struct au1xmmc_host *host = dev_id;
         u32 status;
-        int i, ret = 0;
-
-        disable_irq(AU1100_SD_IRQ);
 
-        for(i = 0; i < AU1XMMC_CONTROLLER_COUNT; i++) {
-                struct au1xmmc_host * host = au1xmmc_hosts[i];
-                u32 handled = 1;
+        status = au_readl(HOST_STATUS(host));
 
-                status = au_readl(HOST_STATUS(host));
+        if (!(status & SD_STATUS_I))
+                return IRQ_NONE;        /* not ours */
 
-                if (host->mrq && (status & STATUS_TIMEOUT)) {
-                        if (status & SD_STATUS_RAT)
-                                host->mrq->cmd->error = -ETIMEDOUT;
+        if (status & SD_STATUS_SI)      /* SDIO */
+                mmc_signal_sdio_irq(host->mmc);
 
-                        else if (status & SD_STATUS_DT)
-                                host->mrq->data->error = -ETIMEDOUT;
+        if (host->mrq && (status & STATUS_TIMEOUT)) {
+                if (status & SD_STATUS_RAT)
+                        host->mrq->cmd->error = -ETIMEDOUT;
+                else if (status & SD_STATUS_DT)
+                        host->mrq->data->error = -ETIMEDOUT;
 
-                        /* In PIO mode, interrupts might still be enabled */
-                        IRQ_OFF(host, SD_CONFIG_NE | SD_CONFIG_TH);
+                /* In PIO mode, interrupts might still be enabled */
+                IRQ_OFF(host, SD_CONFIG_NE | SD_CONFIG_TH);
 
-                        //IRQ_OFF(host, SD_CONFIG_TH|SD_CONFIG_RA|SD_CONFIG_RF);
-                        tasklet_schedule(&host->finish_task);
-                }
+                /* IRQ_OFF(host, SD_CONFIG_TH | SD_CONFIG_RA | SD_CONFIG_RF); */
+                tasklet_schedule(&host->finish_task);
+        }
 #if 0
-                else if (status & SD_STATUS_DD) {
-
-                        /* Sometimes we get a DD before a NE in PIO mode */
-
-                        if (!(host->flags & HOST_F_DMA) &&
-                                        (status & SD_STATUS_NE))
-                                au1xmmc_receive_pio(host);
-                        else {
-                                au1xmmc_data_complete(host, status);
-                                //tasklet_schedule(&host->data_task);
-                        }
+        else if (status & SD_STATUS_DD) {
+                /* Sometimes we get a DD before a NE in PIO mode */
+                if (!(host->flags & HOST_F_DMA) && (status & SD_STATUS_NE))
+                        au1xmmc_receive_pio(host);
+                else {
+                        au1xmmc_data_complete(host, status);
+                        /* tasklet_schedule(&host->data_task); */
                 }
+        }
 #endif
-                else if (status & (SD_STATUS_CR)) {
-                        if (host->status == HOST_S_CMD)
-                                au1xmmc_cmd_complete(host,status);
-                }
-                else if (!(host->flags & HOST_F_DMA)) {
-                        if ((host->flags & HOST_F_XMIT) &&
-                            (status & STATUS_DATA_OUT))
-                                au1xmmc_send_pio(host);
-                        else if ((host->flags & HOST_F_RECV) &&
-                            (status & STATUS_DATA_IN))
-                                au1xmmc_receive_pio(host);
-                }
-                else if (status & 0x203FBC70) {
-                        DBG("Unhandled status %8.8x\n", host->id, status);
-                        handled = 0;
-                }
-
-                au_writel(status, HOST_STATUS(host));
-                au_sync();
-
-                ret |= handled;
+        else if (status & SD_STATUS_CR) {
+                if (host->status == HOST_S_CMD)
+                        au1xmmc_cmd_complete(host, status);
+
+        } else if (!(host->flags & HOST_F_DMA)) {
+                if ((host->flags & HOST_F_XMIT) && (status & STATUS_DATA_OUT))
+                        au1xmmc_send_pio(host);
+                else if ((host->flags & HOST_F_RECV) && (status & STATUS_DATA_IN))
+                        au1xmmc_receive_pio(host);
+
+        } else if (status & 0x203F3C70) {
+                        DBG("Unhandled status %8.8x\n", host->pdev->id,
+                                status);
         }
 
-        enable_irq(AU1100_SD_IRQ);
-        return ret;
+        au_writel(status, HOST_STATUS(host));
+        au_sync();
+
+        return IRQ_HANDLED;
 }
 
-static void au1xmmc_poll_event(unsigned long arg)
-{
-        struct au1xmmc_host *host = (struct au1xmmc_host *) arg;
+#ifdef CONFIG_SOC_AU1200
+/* 8bit memory DMA device */
+static dbdev_tab_t au1xmmc_mem_dbdev = {
+        .dev_id         = DSCR_CMD0_ALWAYS,
+        .dev_flags      = DEV_FLAGS_ANYUSE,
+        .dev_tsize      = 0,
+        .dev_devwidth   = 8,
+        .dev_physaddr   = 0x00000000,
+        .dev_intlevel   = 0,
+        .dev_intpolarity = 0,
+};
+static int memid;
 
-        int card = au1xmmc_card_inserted(host);
-        int controller = (host->flags & HOST_F_ACTIVE) ? 1 : 0;
+static void au1xmmc_dbdma_callback(int irq, void *dev_id)
+{
+        struct au1xmmc_host *host = (struct au1xmmc_host *)dev_id;
 
-        if (card != controller) {
-                host->flags &= ~HOST_F_ACTIVE;
-                if (card) host->flags |= HOST_F_ACTIVE;
-                mmc_detect_change(host->mmc, 0);
-        }
+        /* Avoid spurious interrupts */
+        if (!host->mrq)
+                return;
 
-        if (host->mrq != NULL) {
-                u32 status = au_readl(HOST_STATUS(host));
-                DBG("PENDING - %8.8x\n", host->id, status);
-        }
+        if (host->flags & HOST_F_STOP)
+                SEND_STOP(host);
 
-        mod_timer(&host->timer, jiffies + AU1XMMC_DETECT_TIMEOUT);
+        tasklet_schedule(&host->data_task);
 }
 
-static dbdev_tab_t au1xmmc_mem_dbdev =
-{
-        DSCR_CMD0_ALWAYS, DEV_FLAGS_ANYUSE, 0, 8, 0x00000000, 0, 0
-};
-
-static void au1xmmc_init_dma(struct au1xmmc_host *host)
+static int au1xmmc_dbdma_init(struct au1xmmc_host *host)
 {
+        struct resource *res;
+        int txid, rxid;
+
+        res = platform_get_resource(host->pdev, IORESOURCE_DMA, 0);
+        if (!res)
+                return -ENODEV;
+        txid = res->start;
+
+        res = platform_get_resource(host->pdev, IORESOURCE_DMA, 1);
+        if (!res)
+                return -ENODEV;
+        rxid = res->start;
+
+        if (!memid)
+                return -ENODEV;
+
+        host->tx_chan = au1xxx_dbdma_chan_alloc(memid, txid,
+                                au1xmmc_dbdma_callback, (void *)host);
+        if (!host->tx_chan) {
+                dev_err(&host->pdev->dev, "cannot allocate TX DMA\n");
+                return -ENODEV;
+        }
 
-        u32 rxchan, txchan;
-
-        int txid = au1xmmc_card_table[host->id].tx_devid;
-        int rxid = au1xmmc_card_table[host->id].rx_devid;
+        host->rx_chan = au1xxx_dbdma_chan_alloc(rxid, memid,
+                                au1xmmc_dbdma_callback, (void *)host);
+        if (!host->rx_chan) {
+                dev_err(&host->pdev->dev, "cannot allocate RX DMA\n");
+                au1xxx_dbdma_chan_free(host->tx_chan);
+                return -ENODEV;
+        }
 
-        /* DSCR_CMD0_ALWAYS has a stride of 32 bits, we need a stride
-           of 8 bits.  And since devices are shared, we need to create
-           our own to avoid freaking out other devices
-        */
+        au1xxx_dbdma_set_devwidth(host->tx_chan, 8);
+        au1xxx_dbdma_set_devwidth(host->rx_chan, 8);
 
-        int memid = au1xxx_ddma_add_device(&au1xmmc_mem_dbdev);
+        au1xxx_dbdma_ring_alloc(host->tx_chan, AU1XMMC_DESCRIPTOR_COUNT);
+        au1xxx_dbdma_ring_alloc(host->rx_chan, AU1XMMC_DESCRIPTOR_COUNT);
 
-        txchan = au1xxx_dbdma_chan_alloc(memid, txid,
-                                         au1xmmc_dma_callback, (void *) host);
+        /* DBDMA is good to go */
+        host->flags |= HOST_F_DMA;
 
-        rxchan = au1xxx_dbdma_chan_alloc(rxid, memid,
-                                         au1xmmc_dma_callback, (void *) host);
+        return 0;
+}
 
-        au1xxx_dbdma_set_devwidth(txchan, 8);
-        au1xxx_dbdma_set_devwidth(rxchan, 8);
+static void au1xmmc_dbdma_shutdown(struct au1xmmc_host *host)
+{
+        if (host->flags & HOST_F_DMA) {
+                host->flags &= ~HOST_F_DMA;
+                au1xxx_dbdma_chan_free(host->tx_chan);
+                au1xxx_dbdma_chan_free(host->rx_chan);
+        }
+}
+#endif
 
-        au1xxx_dbdma_ring_alloc(txchan, AU1XMMC_DESCRIPTOR_COUNT);
-        au1xxx_dbdma_ring_alloc(rxchan, AU1XMMC_DESCRIPTOR_COUNT);
+static void au1xmmc_enable_sdio_irq(struct mmc_host *mmc, int en)
+{
+        struct au1xmmc_host *host = mmc_priv(mmc);
 
-        host->tx_chan = txchan;
-        host->rx_chan = rxchan;
+        if (en)
+                IRQ_ON(host, SD_CONFIG_SI);
+        else
+                IRQ_OFF(host, SD_CONFIG_SI);
 }
 
 static const struct mmc_host_ops au1xmmc_ops = {
         .request        = au1xmmc_request,
         .set_ios        = au1xmmc_set_ios,
         .get_ro         = au1xmmc_card_readonly,
+        .get_cd         = au1xmmc_card_inserted,
+        .enable_sdio_irq = au1xmmc_enable_sdio_irq,
 };
 
 static int __devinit au1xmmc_probe(struct platform_device *pdev)
 {
+        struct mmc_host *mmc;
+        struct au1xmmc_host *host;
+        struct resource *r;
+        int ret;
+
+        mmc = mmc_alloc_host(sizeof(struct au1xmmc_host), &pdev->dev);
+        if (!mmc) {
+                dev_err(&pdev->dev, "no memory for mmc_host\n");
+                ret = -ENOMEM;
+                goto out0;
+        }
 
-        int i, ret = 0;
-
-        /* THe interrupt is shared among all controllers */
-        ret = request_irq(AU1100_SD_IRQ, au1xmmc_irq, IRQF_DISABLED, "MMC", 0);
+        host = mmc_priv(mmc);
+        host->mmc = mmc;
+        host->platdata = pdev->dev.platform_data;
+        host->pdev = pdev;
 
-        if (ret) {
-                printk(DRIVER_NAME "ERROR: Couldn't get int %d: %d\n",
-                                AU1100_SD_IRQ, ret);
-                return -ENXIO;
+        ret = -ENODEV;
+        r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!r) {
+                dev_err(&pdev->dev, "no mmio defined\n");
+                goto out1;
         }
 
-        disable_irq(AU1100_SD_IRQ);
+        host->ioarea = request_mem_region(r->start, r->end - r->start + 1,
+                                           pdev->name);
+        if (!host->ioarea) {
+                dev_err(&pdev->dev, "mmio already in use\n");
+                goto out1;
+        }
 
-        for(i = 0; i < AU1XMMC_CONTROLLER_COUNT; i++) {
-                struct mmc_host *mmc = mmc_alloc_host(sizeof(struct au1xmmc_host), &pdev->dev);
-                struct au1xmmc_host *host = 0;
+        host->iobase = (unsigned long)ioremap(r->start, 0x3c);
+        if (!host->iobase) {
+                dev_err(&pdev->dev, "cannot remap mmio\n");
+                goto out2;
+        }
 
-                if (!mmc) {
-                        printk(DRIVER_NAME "ERROR: no mem for host %d\n", i);
-                        au1xmmc_hosts[i] = 0;
-                        continue;
-                }
+        r = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+        if (!r) {
+                dev_err(&pdev->dev, "no IRQ defined\n");
+                goto out3;
+        }
 
-                mmc->ops = &au1xmmc_ops;
+        host->irq = r->start;
+        /* IRQ is shared among both SD controllers */
+        ret = request_irq(host->irq, au1xmmc_irq, IRQF_SHARED,
+                          DRIVER_NAME, host);
+        if (ret) {
+                dev_err(&pdev->dev, "cannot grab IRQ\n");
+                goto out3;
+        }
 
-                mmc->f_min =   450000;
-                mmc->f_max = 24000000;
+        mmc->ops = &au1xmmc_ops;
 
-                mmc->max_seg_size = AU1XMMC_DESCRIPTOR_SIZE;
-                mmc->max_phys_segs = AU1XMMC_DESCRIPTOR_COUNT;
+        mmc->f_min =   450000;
+        mmc->f_max = 24000000;
 
-                mmc->max_blk_size = 2048;
-                mmc->max_blk_count = 512;
+        mmc->max_seg_size = AU1XMMC_DESCRIPTOR_SIZE;
+        mmc->max_phys_segs = AU1XMMC_DESCRIPTOR_COUNT;
 
-                mmc->ocr_avail = AU1XMMC_OCR;
+        mmc->max_blk_size = 2048;
+        mmc->max_blk_count = 512;
 
-                host = mmc_priv(mmc);
-                host->mmc = mmc;
+        mmc->ocr_avail = AU1XMMC_OCR;
+        mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ;
 
-                host->id = i;
-                host->iobase = au1xmmc_card_table[host->id].iobase;
-                host->clock = 0;
-                host->power_mode = MMC_POWER_OFF;
+        host->status = HOST_S_IDLE;
 
-                host->flags = au1xmmc_card_inserted(host) ? HOST_F_ACTIVE : 0;
-                host->status = HOST_S_IDLE;
+        /* board-specific carddetect setup, if any */
+        if (host->platdata && host->platdata->cd_setup) {
+                ret = host->platdata->cd_setup(mmc, 1);
+                if (ret) {
+                        dev_warn(&pdev->dev, "board CD setup failed\n");
+                        mmc->caps |= MMC_CAP_NEEDS_POLL;
+                }
+        } else
+                mmc->caps |= MMC_CAP_NEEDS_POLL;
 
-                init_timer(&host->timer);
+        tasklet_init(&host->data_task, au1xmmc_tasklet_data,
+                        (unsigned long)host);
 
-                host->timer.function = au1xmmc_poll_event;
-                host->timer.data = (unsigned long) host;
-                host->timer.expires = jiffies + AU1XMMC_DETECT_TIMEOUT;
+        tasklet_init(&host->finish_task, au1xmmc_tasklet_finish,
+                        (unsigned long)host);
 
-                tasklet_init(&host->data_task, au1xmmc_tasklet_data,
-                                (unsigned long) host);
+#ifdef CONFIG_SOC_AU1200
+        ret = au1xmmc_dbdma_init(host);
+        if (ret)
+                printk(KERN_INFO DRIVER_NAME ": DBDMA init failed; using PIO\n");
+#endif
 
-                tasklet_init(&host->finish_task, au1xmmc_tasklet_finish,
-                                (unsigned long) host);
+#ifdef CONFIG_LEDS_CLASS
+        if (host->platdata && host->platdata->led) {
+                struct led_classdev *led = host->platdata->led;
+                led->name = mmc_hostname(mmc);
+                led->brightness = LED_OFF;
+                led->default_trigger = mmc_hostname(mmc);
+                ret = led_classdev_register(mmc_dev(mmc), led);
+                if (ret)
+                        goto out5;
+        }
+#endif
 
-                spin_lock_init(&host->lock);
+        au1xmmc_reset_controller(host);
 
-                if (dma != 0)
-                        au1xmmc_init_dma(host);
+        ret = mmc_add_host(mmc);
+        if (ret) {
+                dev_err(&pdev->dev, "cannot add mmc host\n");
+                goto out6;
+        }
 
-                au1xmmc_reset_controller(host);
+        platform_set_drvdata(pdev, mmc);
 
-                mmc_add_host(mmc);
-                au1xmmc_hosts[i] = host;
+        printk(KERN_INFO DRIVER_NAME ": MMC Controller %d set up at %8.8X"
+                " (mode=%s)\n", pdev->id, host->iobase,
+                host->flags & HOST_F_DMA ? "dma" : "pio");
 
-                add_timer(&host->timer);
+        return 0;       /* all ok */
 
-                printk(KERN_INFO DRIVER_NAME ": MMC Controller %d set up at %8.8X (mode=%s)\n",
-                       host->id, host->iobase, dma ? "dma" : "pio");
-        }
+out6:
+#ifdef CONFIG_LEDS_CLASS
+        if (host->platdata && host->platdata->led)
+                led_classdev_unregister(host->platdata->led);
+out5:
+#endif
+        au_writel(0, HOST_ENABLE(host));
+        au_writel(0, HOST_CONFIG(host));
+        au_writel(0, HOST_CONFIG2(host));
+        au_sync();
 
-        enable_irq(AU1100_SD_IRQ);
+#ifdef CONFIG_SOC_AU1200
+        au1xmmc_dbdma_shutdown(host);
+#endif
 
-        return 0;
+        tasklet_kill(&host->data_task);
+        tasklet_kill(&host->finish_task);
+
+        if (host->platdata && host->platdata->cd_setup &&
+            !(mmc->caps & MMC_CAP_NEEDS_POLL))
+                host->platdata->cd_setup(mmc, 0);
+
+        free_irq(host->irq, host);
+out3:
+        iounmap((void *)host->iobase);
+out2:
+        release_resource(host->ioarea);
+        kfree(host->ioarea);
+out1:
+        mmc_free_host(mmc);
+out0:
+        return ret;
 }
 
 static int __devexit au1xmmc_remove(struct platform_device *pdev)
 {
+        struct mmc_host *mmc = platform_get_drvdata(pdev);
+        struct au1xmmc_host *host;
+
+        if (mmc) {
+                host  = mmc_priv(mmc);
 
-        int i;
+                mmc_remove_host(mmc);
 
-        disable_irq(AU1100_SD_IRQ);
+#ifdef CONFIG_LEDS_CLASS
+                if (host->platdata && host->platdata->led)
+                        led_classdev_unregister(host->platdata->led);
+#endif
 
-        for(i = 0; i < AU1XMMC_CONTROLLER_COUNT; i++) {
-                struct au1xmmc_host *host = au1xmmc_hosts[i];
-                if (!host) continue;
+                if (host->platdata && host->platdata->cd_setup &&
+                    !(mmc->caps & MMC_CAP_NEEDS_POLL))
+                        host->platdata->cd_setup(mmc, 0);
+
+                au_writel(0, HOST_ENABLE(host));
+                au_writel(0, HOST_CONFIG(host));
+                au_writel(0, HOST_CONFIG2(host));
+                au_sync();
 
                 tasklet_kill(&host->data_task);
                 tasklet_kill(&host->finish_task);
 
-                del_timer_sync(&host->timer);
+#ifdef CONFIG_SOC_AU1200
+                au1xmmc_dbdma_shutdown(host);
+#endif
                 au1xmmc_set_power(host, 0);
 
-                mmc_remove_host(host->mmc);
-
-                au1xxx_dbdma_chan_free(host->tx_chan);
-                au1xxx_dbdma_chan_free(host->rx_chan);
+                free_irq(host->irq, host);
+                iounmap((void *)host->iobase);
+                release_resource(host->ioarea);
+                kfree(host->ioarea);
 
-                au_writel(0x0, HOST_ENABLE(host));
-                au_sync();
+                mmc_free_host(mmc);
         }
-
-        free_irq(AU1100_SD_IRQ, 0);
         return 0;
 }
 
@@ -1004,21 +1140,31 @@ static struct platform_driver au1xmmc_driver = {
 
 static int __init au1xmmc_init(void)
 {
+#ifdef CONFIG_SOC_AU1200
+        /* DSCR_CMD0_ALWAYS has a stride of 32 bits, we need a stride
+         * of 8 bits.  And since devices are shared, we need to create
+         * our own to avoid freaking out other devices.
+         */
+        memid = au1xxx_ddma_add_device(&au1xmmc_mem_dbdev);
+        if (!memid)
+                printk(KERN_ERR "au1xmmc: cannot add memory dbdma dev\n");
+#endif
         return platform_driver_register(&au1xmmc_driver);
 }
 
 static void __exit au1xmmc_exit(void)
 {
+#ifdef CONFIG_SOC_AU1200
+        if (memid)
+                au1xxx_ddma_del_device(memid);
+#endif
         platform_driver_unregister(&au1xmmc_driver);
 }
 
 module_init(au1xmmc_init);
 module_exit(au1xmmc_exit);
 
-#ifdef MODULE
 MODULE_AUTHOR("Advanced Micro Devices, Inc");
 MODULE_DESCRIPTION("MMC/SD driver for the Alchemy Au1XXX");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:au1xxx-mmc");
-#endif
-
diff --git a/drivers/mmc/host/au1xmmc.h b/drivers/mmc/host/au1xmmc.h
deleted file mode 100644
index 341cbdf0baca..000000000000
--- a/drivers/mmc/host/au1xmmc.h
+++ /dev/null
@@ -1,96 +0,0 @@
-#ifndef _AU1XMMC_H_
-#define _AU1XMMC_H_
-
-/* Hardware definitions */
-
-#define AU1XMMC_DESCRIPTOR_COUNT 1
-#define AU1XMMC_DESCRIPTOR_SIZE  2048
-
-#define AU1XMMC_OCR ( MMC_VDD_27_28 | MMC_VDD_28_29 | MMC_VDD_29_30  | \
-                      MMC_VDD_30_31 | MMC_VDD_31_32 | MMC_VDD_32_33  | \
-                      MMC_VDD_33_34 | MMC_VDD_34_35 | MMC_VDD_35_36)
-
-/* Easy access macros */
-
-#define HOST_STATUS(h)  ((h)->iobase + SD_STATUS)
-#define HOST_CONFIG(h)  ((h)->iobase + SD_CONFIG)
-#define HOST_ENABLE(h)  ((h)->iobase + SD_ENABLE)
-#define HOST_TXPORT(h)  ((h)->iobase + SD_TXPORT)
-#define HOST_RXPORT(h)  ((h)->iobase + SD_RXPORT)
-#define HOST_CMDARG(h)  ((h)->iobase + SD_CMDARG)
-#define HOST_BLKSIZE(h) ((h)->iobase + SD_BLKSIZE)
-#define HOST_CMD(h)     ((h)->iobase + SD_CMD)
-#define HOST_CONFIG2(h) ((h)->iobase + SD_CONFIG2)
-#define HOST_TIMEOUT(h) ((h)->iobase + SD_TIMEOUT)
-#define HOST_DEBUG(h)   ((h)->iobase + SD_DEBUG)
-
-#define DMA_CHANNEL(h) \
-        ( ((h)->flags & HOST_F_XMIT) ? (h)->tx_chan : (h)->rx_chan)
-
-/* This gives us a hard value for the stop command that we can write directly
- * to the command register
- */
-
-#define STOP_CMD (SD_CMD_RT_1B|SD_CMD_CT_7|(0xC << SD_CMD_CI_SHIFT)|SD_CMD_GO)
-
-/* This is the set of interrupts that we configure by default */
-
-#if 0
-#define AU1XMMC_INTERRUPTS (SD_CONFIG_SC | SD_CONFIG_DT | SD_CONFIG_DD | \
-                SD_CONFIG_RAT | SD_CONFIG_CR | SD_CONFIG_I)
-#endif
-
-#define AU1XMMC_INTERRUPTS (SD_CONFIG_SC | SD_CONFIG_DT | \
-                SD_CONFIG_RAT | SD_CONFIG_CR | SD_CONFIG_I)
-/* The poll event (looking for insert/remove events runs twice a second */
-#define AU1XMMC_DETECT_TIMEOUT (HZ/2)
-
-struct au1xmmc_host {
-  struct mmc_host *mmc;
-  struct mmc_request *mrq;
-
-  u32 id;
-
-  u32 flags;
-  u32 iobase;
-  u32 clock;
-  u32 bus_width;
-  u32 power_mode;
-
-  int status;
-
-   struct {
-           int len;
-           int dir;
-  } dma;
-
-   struct {
-           int index;
-           int offset;
-           int len;
-  } pio;
-
-  u32 tx_chan;
-  u32 rx_chan;
-
-  struct timer_list timer;
-  struct tasklet_struct finish_task;
-  struct tasklet_struct data_task;
-
-  spinlock_t lock;
-};
-
-/* Status flags used by the host structure */
-
-#define HOST_F_XMIT   0x0001
-#define HOST_F_RECV   0x0002
-#define HOST_F_DMA    0x0010
-#define HOST_F_ACTIVE 0x0100
-#define HOST_F_STOP   0x1000
-
-#define HOST_S_IDLE   0x0001
-#define HOST_S_CMD    0x0002
-#define HOST_S_DATA   0x0003
-#define HOST_S_STOP   0x0004
-
-#endif
diff --git a/drivers/mmc/host/imxmmc.c b/drivers/mmc/host/imxmmc.c
index eed211b2ac70..5e880c0f1349 100644
--- a/drivers/mmc/host/imxmmc.c
+++ b/drivers/mmc/host/imxmmc.c
@@ -892,9 +892,12 @@ static int imxmci_get_ro(struct mmc_host *mmc)
         struct imxmci_host *host = mmc_priv(mmc);
 
         if (host->pdata && host->pdata->get_ro)
-                return host->pdata->get_ro(mmc_dev(mmc));
-        /* Host doesn't support read only detection so assume writeable */
-        return 0;
+                return !!host->pdata->get_ro(mmc_dev(mmc));
+        /*
+         * Board doesn't support read only detection; let the mmc core
+         * decide what to do.
+         */
+        return -ENOSYS;
 }
 
 
diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c
index 35508584ac2a..41cc63360e43 100644
--- a/drivers/mmc/host/mmc_spi.c
+++ b/drivers/mmc/host/mmc_spi.c
@@ -1126,16 +1126,28 @@ static int mmc_spi_get_ro(struct mmc_host *mmc)
         struct mmc_spi_host *host = mmc_priv(mmc);
 
         if (host->pdata && host->pdata->get_ro)
-                return host->pdata->get_ro(mmc->parent);
-        /* board doesn't support read only detection; assume writeable */
-        return 0;
+                return !!host->pdata->get_ro(mmc->parent);
+        /*
+         * Board doesn't support read only detection; let the mmc core
+         * decide what to do.
+         */
+        return -ENOSYS;
 }
 
+static int mmc_spi_get_cd(struct mmc_host *mmc)
+{
+        struct mmc_spi_host *host = mmc_priv(mmc);
+
+        if (host->pdata && host->pdata->get_cd)
+                return !!host->pdata->get_cd(mmc->parent);
+        return -ENOSYS;
+}
 
 static const struct mmc_host_ops mmc_spi_ops = {
         .request        = mmc_spi_request,
         .set_ios        = mmc_spi_set_ios,
         .get_ro         = mmc_spi_get_ro,
+        .get_cd         = mmc_spi_get_cd,
 };
 
 
@@ -1240,10 +1252,7 @@ static int mmc_spi_probe(struct spi_device *spi)
         mmc->ops = &mmc_spi_ops;
         mmc->max_blk_size = MMC_SPI_BLOCKSIZE;
 
-        /* As long as we keep track of the number of successfully
-         * transmitted blocks, we're good for multiwrite.
-         */
-        mmc->caps = MMC_CAP_SPI | MMC_CAP_MULTIWRITE;
+        mmc->caps = MMC_CAP_SPI;
 
         /* SPI doesn't need the lowspeed device identification thing for
          * MMC or SD cards, since it never comes up in open drain mode.
@@ -1319,17 +1328,23 @@ static int mmc_spi_probe(struct spi_device *spi)
                         goto fail_glue_init;
         }
 
+        /* pass platform capabilities, if any */
+        if (host->pdata)
+                mmc->caps |= host->pdata->caps;
+
         status = mmc_add_host(mmc);
         if (status != 0)
                 goto fail_add_host;
 
-        dev_info(&spi->dev, "SD/MMC host %s%s%s%s\n",
+        dev_info(&spi->dev, "SD/MMC host %s%s%s%s%s\n",
                         mmc->class_dev.bus_id,
                         host->dma_dev ? "" : ", no DMA",
                         (host->pdata && host->pdata->get_ro)
                                 ? "" : ", no WP",
                         (host->pdata && host->pdata->setpower)
-                                ? "" : ", no poweroff");
+                                ? "" : ", no poweroff",
+                        (mmc->caps & MMC_CAP_NEEDS_POLL)
+                                ? ", cd polling" : "");
         return 0;
 
 fail_add_host:
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index da5fecad74d9..696cf3647ceb 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -535,7 +535,6 @@ static int mmci_probe(struct amba_device *dev, void *id)
         mmc->f_min = (host->mclk + 511) / 512;
         mmc->f_max = min(host->mclk, fmax);
         mmc->ocr_avail = plat->ocr_mask;
-        mmc->caps = MMC_CAP_MULTIWRITE;
 
         /*
          * We can do SGIO
diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index 549517c35675..dbc26eb6a89e 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -1317,7 +1317,7 @@ static int __init mmc_omap_new_slot(struct mmc_omap_host *host, int id)
 
         host->slots[id] = slot;
 
-        mmc->caps = MMC_CAP_MULTIWRITE;
+        mmc->caps = 0;
         if (host->pdata->conf.wire4)
                 mmc->caps |= MMC_CAP_4_BIT_DATA;
 
diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c
index d89475d36988..d39f59738866 100644
--- a/drivers/mmc/host/pxamci.c
+++ b/drivers/mmc/host/pxamci.c
@@ -374,9 +374,12 @@ static int pxamci_get_ro(struct mmc_host *mmc)
         struct pxamci_host *host = mmc_priv(mmc);
 
         if (host->pdata && host->pdata->get_ro)
-                return host->pdata->get_ro(mmc_dev(mmc));
-        /* Host doesn't support read only detection so assume writeable */
-        return 0;
+                return !!host->pdata->get_ro(mmc_dev(mmc));
+        /*
+         * Board doesn't support read only detection; let the mmc core
+         * decide what to do.
+         */
+        return -ENOSYS;
 }
 
 static void pxamci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c
new file mode 100644
index 000000000000..6a1e4994b724
--- /dev/null
+++ b/drivers/mmc/host/s3cmci.c
@@ -0,0 +1,1446 @@
+/*
+ *  linux/drivers/mmc/s3cmci.h - Samsung S3C MCI driver
+ *
+ *  Copyright (C) 2004-2006 maintech GmbH, Thomas Kleffel <tk@maintech.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+#include <linux/clk.h>
+#include <linux/mmc/host.h>
+#include <linux/platform_device.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+
+#include <asm/dma.h>
+
+#include <asm/arch/regs-sdi.h>
+#include <asm/arch/regs-gpio.h>
+
+#include <asm/plat-s3c24xx/mci.h>
+
+#include "s3cmci.h"
+
+#define DRIVER_NAME "s3c-mci"
+
+enum dbg_channels {
+        dbg_err   = (1 << 0),
+        dbg_debug = (1 << 1),
+        dbg_info  = (1 << 2),
+        dbg_irq   = (1 << 3),
+        dbg_sg    = (1 << 4),
+        dbg_dma   = (1 << 5),
+        dbg_pio   = (1 << 6),
+        dbg_fail  = (1 << 7),
+        dbg_conf  = (1 << 8),
+};
+
+static const int dbgmap_err   = dbg_err | dbg_fail;
+static const int dbgmap_info  = dbg_info | dbg_conf;
+static const int dbgmap_debug = dbg_debug;
+
+#define dbg(host, channels, args...)              \
+        do {                                      \
+        if (dbgmap_err & channels)                \
+                dev_err(&host->pdev->dev, args);  \
+        else if (dbgmap_info & channels)          \
+                dev_info(&host->pdev->dev, args); \
+        else if (dbgmap_debug & channels)         \
+                dev_dbg(&host->pdev->dev, args);  \
+        } while (0)
+
+#define RESSIZE(ressource) (((ressource)->end - (ressource)->start)+1)
+
+static struct s3c2410_dma_client s3cmci_dma_client = {
+        .name           = "s3c-mci",
+};
+
+static void finalize_request(struct s3cmci_host *host);
+static void s3cmci_send_request(struct mmc_host *mmc);
+static void s3cmci_reset(struct s3cmci_host *host);
+
+#ifdef CONFIG_MMC_DEBUG
+
+static void dbg_dumpregs(struct s3cmci_host *host, char *prefix)
+{
+        u32 con, pre, cmdarg, cmdcon, cmdsta, r0, r1, r2, r3, timer, bsize;
+        u32 datcon, datcnt, datsta, fsta, imask;
+
+        con     = readl(host->base + S3C2410_SDICON);
+        pre     = readl(host->base + S3C2410_SDIPRE);
+        cmdarg  = readl(host->base + S3C2410_SDICMDARG);
+        cmdcon  = readl(host->base + S3C2410_SDICMDCON);
+        cmdsta  = readl(host->base + S3C2410_SDICMDSTAT);
+        r0      = readl(host->base + S3C2410_SDIRSP0);
+        r1      = readl(host->base + S3C2410_SDIRSP1);
+        r2      = readl(host->base + S3C2410_SDIRSP2);
+        r3      = readl(host->base + S3C2410_SDIRSP3);
+        timer   = readl(host->base + S3C2410_SDITIMER);
+        bsize   = readl(host->base + S3C2410_SDIBSIZE);
+        datcon  = readl(host->base + S3C2410_SDIDCON);
+        datcnt  = readl(host->base + S3C2410_SDIDCNT);
+        datsta  = readl(host->base + S3C2410_SDIDSTA);
+        fsta    = readl(host->base + S3C2410_SDIFSTA);
+        imask   = readl(host->base + host->sdiimsk);
+
+        dbg(host, dbg_debug, "%s  CON:[%08x]  PRE:[%08x]  TMR:[%08x]\n",
+                                prefix, con, pre, timer);
+
+        dbg(host, dbg_debug, "%s CCON:[%08x] CARG:[%08x] CSTA:[%08x]\n",
+                                prefix, cmdcon, cmdarg, cmdsta);
+
+        dbg(host, dbg_debug, "%s DCON:[%08x] FSTA:[%08x]"
+                               " DSTA:[%08x] DCNT:[%08x]\n",
+                                prefix, datcon, fsta, datsta, datcnt);
+
+        dbg(host, dbg_debug, "%s   R0:[%08x]   R1:[%08x]"
+                               "   R2:[%08x]   R3:[%08x]\n",
+                                prefix, r0, r1, r2, r3);
+}
+
+static void prepare_dbgmsg(struct s3cmci_host *host, struct mmc_command *cmd,
+                           int stop)
+{
+        snprintf(host->dbgmsg_cmd, 300,
+                 "#%u%s op:%i arg:0x%08x flags:0x08%x retries:%u",
+                 host->ccnt, (stop ? " (STOP)" : ""),
+                 cmd->opcode, cmd->arg, cmd->flags, cmd->retries);
+
+        if (cmd->data) {
+                snprintf(host->dbgmsg_dat, 300,
+                         "#%u bsize:%u blocks:%u bytes:%u",
+                         host->dcnt, cmd->data->blksz,
+                         cmd->data->blocks,
+                         cmd->data->blocks * cmd->data->blksz);
+        } else {
+                host->dbgmsg_dat[0] = '\0';
+        }
+}
+
+static void dbg_dumpcmd(struct s3cmci_host *host, struct mmc_command *cmd,
+                        int fail)
+{
+        unsigned int dbglvl = fail ? dbg_fail : dbg_debug;
+
+        if (!cmd)
+                return;
+
+        if (cmd->error == 0) {
+                dbg(host, dbglvl, "CMD[OK] %s R0:0x%08x\n",
+                        host->dbgmsg_cmd, cmd->resp[0]);
+        } else {
+                dbg(host, dbglvl, "CMD[ERR %i] %s Status:%s\n",
+                        cmd->error, host->dbgmsg_cmd, host->status);
+        }
+
+        if (!cmd->data)
+                return;
+
+        if (cmd->data->error == 0) {
+                dbg(host, dbglvl, "DAT[OK] %s\n", host->dbgmsg_dat);
+        } else {
+                dbg(host, dbglvl, "DAT[ERR %i] %s DCNT:0x%08x\n",
+                        cmd->data->error, host->dbgmsg_dat,
+                        readl(host->base + S3C2410_SDIDCNT));
+        }
+}
+#else
+static void dbg_dumpcmd(struct s3cmci_host *host,
+                        struct mmc_command *cmd, int fail) { }
+
+static void prepare_dbgmsg(struct s3cmci_host *host, struct mmc_command *cmd,
+                           int stop) { }
+
+static void dbg_dumpregs(struct s3cmci_host *host, char *prefix) { }
+
+#endif /* CONFIG_MMC_DEBUG */
+
+static inline u32 enable_imask(struct s3cmci_host *host, u32 imask)
+{
+        u32 newmask;
+
+        newmask = readl(host->base + host->sdiimsk);
+        newmask |= imask;
+
+        writel(newmask, host->base + host->sdiimsk);
+
+        return newmask;
+}
+
+static inline u32 disable_imask(struct s3cmci_host *host, u32 imask)
+{
+        u32 newmask;
+
+        newmask = readl(host->base + host->sdiimsk);
+        newmask &= ~imask;
+
+        writel(newmask, host->base + host->sdiimsk);
+
+        return newmask;
+}
+
+static inline void clear_imask(struct s3cmci_host *host)
+{
+        writel(0, host->base + host->sdiimsk);
+}
+
+static inline int get_data_buffer(struct s3cmci_host *host,
+                                  u32 *words, u32 **pointer)
+{
+        struct scatterlist *sg;
+
+        if (host->pio_active == XFER_NONE)
+                return -EINVAL;
+
+        if ((!host->mrq) || (!host->mrq->data))
+                return -EINVAL;
+
+        if (host->pio_sgptr >= host->mrq->data->sg_len) {
+                dbg(host, dbg_debug, "no more buffers (%i/%i)\n",
+                      host->pio_sgptr, host->mrq->data->sg_len);
+                return -EBUSY;
+        }
+        sg = &host->mrq->data->sg[host->pio_sgptr];
+
+        *words = sg->length >> 2;
+        *pointer = sg_virt(sg);
+
+        host->pio_sgptr++;
+
+        dbg(host, dbg_sg, "new buffer (%i/%i)\n",
+            host->pio_sgptr, host->mrq->data->sg_len);
+
+        return 0;
+}
+
+static inline u32 fifo_count(struct s3cmci_host *host)
+{
+        u32 fifostat = readl(host->base + S3C2410_SDIFSTA);
+
+        fifostat &= S3C2410_SDIFSTA_COUNTMASK;
+        return fifostat >> 2;
+}
+
+static inline u32 fifo_free(struct s3cmci_host *host)
+{
+        u32 fifostat = readl(host->base + S3C2410_SDIFSTA);
+
+        fifostat &= S3C2410_SDIFSTA_COUNTMASK;
+        return (63 - fifostat) >> 2;
+}
+
+static void do_pio_read(struct s3cmci_host *host)
+{
+        int res;
+        u32 fifo;
+        void __iomem *from_ptr;
+
+        /* write real prescaler to host, it might be set slow to fix */
+        writel(host->prescaler, host->base + S3C2410_SDIPRE);
+
+        from_ptr = host->base + host->sdidata;
+
+        while ((fifo = fifo_count(host))) {
+                if (!host->pio_words) {
+                        res = get_data_buffer(host, &host->pio_words,
+                                              &host->pio_ptr);
+                        if (res) {
+                                host->pio_active = XFER_NONE;
+                                host->complete_what = COMPLETION_FINALIZE;
+
+                                dbg(host, dbg_pio, "pio_read(): "
+                                    "complete (no more data).\n");
+                                return;
+                        }
+
+                        dbg(host, dbg_pio,
+                            "pio_read(): new target: [%i]@[%p]\n",
+                            host->pio_words, host->pio_ptr);
+                }
+
+                dbg(host, dbg_pio,
+                    "pio_read(): fifo:[%02i] buffer:[%03i] dcnt:[%08X]\n",
+                    fifo, host->pio_words,
+                    readl(host->base + S3C2410_SDIDCNT));
+
+                if (fifo > host->pio_words)
+                        fifo = host->pio_words;
+
+                host->pio_words -= fifo;
+                host->pio_count += fifo;
+
+                while (fifo--)
+                        *(host->pio_ptr++) = readl(from_ptr);
+        }
+
+        if (!host->pio_words) {
+                res = get_data_buffer(host, &host->pio_words, &host->pio_ptr);
+                if (res) {
+                        dbg(host, dbg_pio,
+                            "pio_read(): complete (no more buffers).\n");
+                        host->pio_active = XFER_NONE;
+                        host->complete_what = COMPLETION_FINALIZE;
+
+                        return;
+                }
+        }
+
+        enable_imask(host,
+                     S3C2410_SDIIMSK_RXFIFOHALF | S3C2410_SDIIMSK_RXFIFOLAST);
+}
+
+static void do_pio_write(struct s3cmci_host *host)
+{
+        void __iomem *to_ptr;
+        int res;
+        u32 fifo;
+
+        to_ptr = host->base + host->sdidata;
+
+        while ((fifo = fifo_free(host))) {
+                if (!host->pio_words) {
+                        res = get_data_buffer(host, &host->pio_words,
+                                                        &host->pio_ptr);
+                        if (res) {
+                                dbg(host, dbg_pio,
+                                    "pio_write(): complete (no more data).\n");
+                                host->pio_active = XFER_NONE;
+
+                                return;
+                        }
+
+                        dbg(host, dbg_pio,
+                            "pio_write(): new source: [%i]@[%p]\n",
+                            host->pio_words, host->pio_ptr);
+
+                }
+
+                if (fifo > host->pio_words)
+                        fifo = host->pio_words;
+
+                host->pio_words -= fifo;
+                host->pio_count += fifo;
+
+                while (fifo--)
+                        writel(*(host->pio_ptr++), to_ptr);
+        }
+
+        enable_imask(host, S3C2410_SDIIMSK_TXFIFOHALF);
+}
+
+static void pio_tasklet(unsigned long data)
+{
+        struct s3cmci_host *host = (struct s3cmci_host *) data;
+
+
+        disable_irq(host->irq);
+
+        if (host->pio_active == XFER_WRITE)
+                do_pio_write(host);
+
+        if (host->pio_active == XFER_READ)
+                do_pio_read(host);
+
+        if (host->complete_what == COMPLETION_FINALIZE) {
+                clear_imask(host);
+                if (host->pio_active != XFER_NONE) {
+                        dbg(host, dbg_err, "unfinished %s "
+                            "- pio_count:[%u] pio_words:[%u]\n",
+                            (host->pio_active == XFER_READ) ? "read" : "write",
+                            host->pio_count, host->pio_words);
+
+                        if (host->mrq->data)
+                                host->mrq->data->error = -EINVAL;
+                }
+
+                finalize_request(host);
+        } else
+                enable_irq(host->irq);
+}
+
+/*
+ * ISR for SDI Interface IRQ
+ * Communication between driver and ISR works as follows:
+ *   host->mrq                  points to current request
+ *   host->complete_what        Indicates when the request is considered done
+ *     COMPLETION_CMDSENT         when the command was sent
+ *     COMPLETION_RSPFIN          when a response was received
+ *     COMPLETION_XFERFINISH      when the data transfer is finished
+ *     COMPLETION_XFERFINISH_RSPFIN both of the above.
+ *   host->complete_request     is the completion-object the driver waits for
+ *
+ * 1) Driver sets up host->mrq and host->complete_what
+ * 2) Driver prepares the transfer
+ * 3) Driver enables interrupts
+ * 4) Driver starts transfer
+ * 5) Driver waits for host->complete_rquest
+ * 6) ISR checks for request status (errors and success)
+ * 6) ISR sets host->mrq->cmd->error and host->mrq->data->error
+ * 7) ISR completes host->complete_request
+ * 8) ISR disables interrupts
+ * 9) Driver wakes up and takes care of the request
+ *
+ * Note: "->error"-fields are expected to be set to 0 before the request
+ *       was issued by mmc.c - therefore they are only set, when an error
+ *       contition comes up
+ */
+
+static irqreturn_t s3cmci_irq(int irq, void *dev_id)
+{
+        struct s3cmci_host *host = dev_id;
+        struct mmc_command *cmd;
+        u32 mci_csta, mci_dsta, mci_fsta, mci_dcnt, mci_imsk;
+        u32 mci_cclear, mci_dclear;
+        unsigned long iflags;
+
+        spin_lock_irqsave(&host->complete_lock, iflags);
+
+        mci_csta = readl(host->base + S3C2410_SDICMDSTAT);
+        mci_dsta = readl(host->base + S3C2410_SDIDSTA);
+        mci_dcnt = readl(host->base + S3C2410_SDIDCNT);
+        mci_fsta = readl(host->base + S3C2410_SDIFSTA);
+        mci_imsk = readl(host->base + host->sdiimsk);
+        mci_cclear = 0;
+        mci_dclear = 0;
+
+        if ((host->complete_what == COMPLETION_NONE) ||
+            (host->complete_what == COMPLETION_FINALIZE)) {
+                host->status = "nothing to complete";
+                clear_imask(host);
+                goto irq_out;
+        }
+
+        if (!host->mrq) {
+                host->status = "no active mrq";
+                clear_imask(host);
+                goto irq_out;
+        }
+
+        cmd = host->cmd_is_stop ? host->mrq->stop : host->mrq->cmd;
+
+        if (!cmd) {
+                host->status = "no active cmd";
+                clear_imask(host);
+                goto irq_out;
+        }
+
+        if (!host->dodma) {
+                if ((host->pio_active == XFER_WRITE) &&
+                    (mci_fsta & S3C2410_SDIFSTA_TFDET)) {
+
+                        disable_imask(host, S3C2410_SDIIMSK_TXFIFOHALF);
+                        tasklet_schedule(&host->pio_tasklet);
+                        host->status = "pio tx";
+                }
+
+                if ((host->pio_active == XFER_READ) &&
+                    (mci_fsta & S3C2410_SDIFSTA_RFDET)) {
+
+                        disable_imask(host,
+                                      S3C2410_SDIIMSK_RXFIFOHALF |
+                                      S3C2410_SDIIMSK_RXFIFOLAST);
+
+                        tasklet_schedule(&host->pio_tasklet);
+                        host->status = "pio rx";
+                }
+        }
+
+        if (mci_csta & S3C2410_SDICMDSTAT_CMDTIMEOUT) {
+                dbg(host, dbg_err, "CMDSTAT: error CMDTIMEOUT\n");
+                cmd->error = -ETIMEDOUT;
+                host->status = "error: command timeout";
+                goto fail_transfer;
+        }
+
+        if (mci_csta & S3C2410_SDICMDSTAT_CMDSENT) {
+                if (host->complete_what == COMPLETION_CMDSENT) {
+                        host->status = "ok: command sent";
+                        goto close_transfer;
+                }
+
+                mci_cclear |= S3C2410_SDICMDSTAT_CMDSENT;
+        }
+
+        if (mci_csta & S3C2410_SDICMDSTAT_CRCFAIL) {
+                if (cmd->flags & MMC_RSP_CRC) {
+                        if (host->mrq->cmd->flags & MMC_RSP_136) {
+                                dbg(host, dbg_irq,
+                                    "fixup: ignore CRC fail with long rsp\n");
+                        } else {
+                                /* note, we used to fail the transfer
+                                 * here, but it seems that this is just
+                                 * the hardware getting it wrong.
+                                 *
+                                 * cmd->error = -EILSEQ;
+                                 * host->status = "error: bad command crc";
+                                 * goto fail_transfer;
+                                */
+                        }
+                }
+
+                mci_cclear |= S3C2410_SDICMDSTAT_CRCFAIL;
+        }
+
+        if (mci_csta & S3C2410_SDICMDSTAT_RSPFIN) {
+                if (host->complete_what == COMPLETION_RSPFIN) {
+                        host->status = "ok: command response received";
+                        goto close_transfer;
+                }
+
+                if (host->complete_what == COMPLETION_XFERFINISH_RSPFIN)
+                        host->complete_what = COMPLETION_XFERFINISH;
+
+                mci_cclear |= S3C2410_SDICMDSTAT_RSPFIN;
+        }
+
+        /* errors handled after this point are only relevant
+           when a data transfer is in progress */
+
+        if (!cmd->data)
+                goto clear_status_bits;
+
+        /* Check for FIFO failure */
+        if (host->is2440) {
+                if (mci_fsta & S3C2440_SDIFSTA_FIFOFAIL) {
+                        dbg(host, dbg_err, "FIFO failure\n");
+                        host->mrq->data->error = -EILSEQ;
+                        host->status = "error: 2440 fifo failure";
+                        goto fail_transfer;
+                }
+        } else {
+                if (mci_dsta & S3C2410_SDIDSTA_FIFOFAIL) {
+                        dbg(host, dbg_err, "FIFO failure\n");
+                        cmd->data->error = -EILSEQ;
+                        host->status = "error:  fifo failure";
+                        goto fail_transfer;
+                }
+        }
+
+        if (mci_dsta & S3C2410_SDIDSTA_RXCRCFAIL) {
+                dbg(host, dbg_err, "bad data crc (outgoing)\n");
+                cmd->data->error = -EILSEQ;
+                host->status = "error: bad data crc (outgoing)";
+                goto fail_transfer;
+        }
+
+        if (mci_dsta & S3C2410_SDIDSTA_CRCFAIL) {
+                dbg(host, dbg_err, "bad data crc (incoming)\n");
+                cmd->data->error = -EILSEQ;
+                host->status = "error: bad data crc (incoming)";
+                goto fail_transfer;
+        }
+
+        if (mci_dsta & S3C2410_SDIDSTA_DATATIMEOUT) {
+                dbg(host, dbg_err, "data timeout\n");
+                cmd->data->error = -ETIMEDOUT;
+                host->status = "error: data timeout";
+                goto fail_transfer;
+        }
+
+        if (mci_dsta & S3C2410_SDIDSTA_XFERFINISH) {
+                if (host->complete_what == COMPLETION_XFERFINISH) {
+                        host->status = "ok: data transfer completed";
+                        goto close_transfer;
+                }
+
+                if (host->complete_what == COMPLETION_XFERFINISH_RSPFIN)
+                        host->complete_what = COMPLETION_RSPFIN;
+
+                mci_dclear |= S3C2410_SDIDSTA_XFERFINISH;
+        }
+
+clear_status_bits:
+        writel(mci_cclear, host->base + S3C2410_SDICMDSTAT);
+        writel(mci_dclear, host->base + S3C2410_SDIDSTA);
+
+        goto irq_out;
+
+fail_transfer:
+        host->pio_active = XFER_NONE;
+
+close_transfer:
+        host->complete_what = COMPLETION_FINALIZE;
+
+        clear_imask(host);
+        tasklet_schedule(&host->pio_tasklet);
+
+        goto irq_out;
+
+irq_out:
+        dbg(host, dbg_irq,
+            "csta:0x%08x dsta:0x%08x fsta:0x%08x dcnt:0x%08x status:%s.\n",
+            mci_csta, mci_dsta, mci_fsta, mci_dcnt, host->status);
+
+        spin_unlock_irqrestore(&host->complete_lock, iflags);
+        return IRQ_HANDLED;
+
+}
+
+/*
+ * ISR for the CardDetect Pin
+*/
+
+static irqreturn_t s3cmci_irq_cd(int irq, void *dev_id)
+{
+        struct s3cmci_host *host = (struct s3cmci_host *)dev_id;
+
+        dbg(host, dbg_irq, "card detect\n");
+
+        mmc_detect_change(host->mmc, msecs_to_jiffies(500));
+
+        return IRQ_HANDLED;
+}
+
+void s3cmci_dma_done_callback(struct s3c2410_dma_chan *dma_ch, void *buf_id,
+                              int size, enum s3c2410_dma_buffresult result)
+{
+        struct s3cmci_host *host = buf_id;
+        unsigned long iflags;
+        u32 mci_csta, mci_dsta, mci_fsta, mci_dcnt;
+
+        mci_csta = readl(host->base + S3C2410_SDICMDSTAT);
+        mci_dsta = readl(host->base + S3C2410_SDIDSTA);
+        mci_fsta = readl(host->base + S3C2410_SDIFSTA);
+        mci_dcnt = readl(host->base + S3C2410_SDIDCNT);
+
+        BUG_ON(!host->mrq);
+        BUG_ON(!host->mrq->data);
+        BUG_ON(!host->dmatogo);
+
+        spin_lock_irqsave(&host->complete_lock, iflags);
+
+        if (result != S3C2410_RES_OK) {
+                dbg(host, dbg_fail, "DMA FAILED: csta=0x%08x dsta=0x%08x "
+                        "fsta=0x%08x dcnt:0x%08x result:0x%08x toGo:%u\n",
+                        mci_csta, mci_dsta, mci_fsta,
+                        mci_dcnt, result, host->dmatogo);
+
+                goto fail_request;
+        }
+
+        host->dmatogo--;
+        if (host->dmatogo) {
+                dbg(host, dbg_dma, "DMA DONE  Size:%i DSTA:[%08x] "
+                        "DCNT:[%08x] toGo:%u\n",
+                        size, mci_dsta, mci_dcnt, host->dmatogo);
+
+                goto out;
+        }
+
+        dbg(host, dbg_dma, "DMA FINISHED Size:%i DSTA:%08x DCNT:%08x\n",
+                size, mci_dsta, mci_dcnt);
+
+        host->complete_what = COMPLETION_FINALIZE;
+
+out:
+        tasklet_schedule(&host->pio_tasklet);
+        spin_unlock_irqrestore(&host->complete_lock, iflags);
+        return;
+
+fail_request:
+        host->mrq->data->error = -EINVAL;
+        host->complete_what = COMPLETION_FINALIZE;
+        writel(0, host->base + host->sdiimsk);
+        goto out;
+
+}
+
+static void finalize_request(struct s3cmci_host *host)
+{
+        struct mmc_request *mrq = host->mrq;
+        struct mmc_command *cmd = host->cmd_is_stop ? mrq->stop : mrq->cmd;
+        int debug_as_failure = 0;
+
+        if (host->complete_what != COMPLETION_FINALIZE)
+                return;
+
+        if (!mrq)
+                return;
+
+        if (cmd->data && (cmd->error == 0) &&
+            (cmd->data->error == 0)) {
+                if (host->dodma && (!host->dma_complete)) {
+                        dbg(host, dbg_dma, "DMA Missing!\n");
+                        return;
+                }
+        }
+
+        /* Read response from controller. */
+        cmd->resp[0] = readl(host->base + S3C2410_SDIRSP0);
+        cmd->resp[1] = readl(host->base + S3C2410_SDIRSP1);
+        cmd->resp[2] = readl(host->base + S3C2410_SDIRSP2);
+        cmd->resp[3] = readl(host->base + S3C2410_SDIRSP3);
+
+        writel(host->prescaler, host->base + S3C2410_SDIPRE);
+
+        if (cmd->error)
+                debug_as_failure = 1;
+
+        if (cmd->data && cmd->data->error)
+                debug_as_failure = 1;
+
+        dbg_dumpcmd(host, cmd, debug_as_failure);
+
+        /* Cleanup controller */
+        writel(0, host->base + S3C2410_SDICMDARG);
+        writel(S3C2410_SDIDCON_STOP, host->base + S3C2410_SDIDCON);
+        writel(0, host->base + S3C2410_SDICMDCON);
+        writel(0, host->base + host->sdiimsk);
+
+        if (cmd->data && cmd->error)
+                cmd->data->error = cmd->error;
+
+        if (cmd->data && cmd->data->stop && (!host->cmd_is_stop)) {
+                host->cmd_is_stop = 1;
+                s3cmci_send_request(host->mmc);
+                return;
+        }
+
+        /* If we have no data transfer we are finished here */
+        if (!mrq->data)
+                goto request_done;
+
+        /* Calulate the amout of bytes transfer if there was no error */
+        if (mrq->data->error == 0) {
+                mrq->data->bytes_xfered =
+                        (mrq->data->blocks * mrq->data->blksz);
+        } else {
+                mrq->data->bytes_xfered = 0;
+        }
+
+        /* If we had an error while transfering data we flush the
+         * DMA channel and the fifo to clear out any garbage. */
+        if (mrq->data->error != 0) {
+                if (host->dodma)
+                        s3c2410_dma_ctrl(host->dma, S3C2410_DMAOP_FLUSH);
+
+                if (host->is2440) {
+                        /* Clear failure register and reset fifo. */
+                        writel(S3C2440_SDIFSTA_FIFORESET |
+                               S3C2440_SDIFSTA_FIFOFAIL,
+                               host->base + S3C2410_SDIFSTA);
+                } else {
+                        u32 mci_con;
+
+                        /* reset fifo */
+                        mci_con = readl(host->base + S3C2410_SDICON);
+                        mci_con |= S3C2410_SDICON_FIFORESET;
+
+                        writel(mci_con, host->base + S3C2410_SDICON);
+                }
+        }
+
+request_done:
+        host->complete_what = COMPLETION_NONE;
+        host->mrq = NULL;
+        mmc_request_done(host->mmc, mrq);
+}
+
+
+void s3cmci_dma_setup(struct s3cmci_host *host, enum s3c2410_dmasrc source)
+{
+        static enum s3c2410_dmasrc last_source = -1;
+        static int setup_ok;
+
+        if (last_source == source)
+                return;
+
+        last_source = source;
+
+        s3c2410_dma_devconfig(host->dma, source, 3,
+                              host->mem->start + host->sdidata);
+
+        if (!setup_ok) {
+                s3c2410_dma_config(host->dma, 4,
+                        (S3C2410_DCON_HWTRIG | S3C2410_DCON_CH0_SDI));
+                s3c2410_dma_set_buffdone_fn(host->dma,
+                                            s3cmci_dma_done_callback);
+                s3c2410_dma_setflags(host->dma, S3C2410_DMAF_AUTOSTART);
+                setup_ok = 1;
+        }
+}
+
+static void s3cmci_send_command(struct s3cmci_host *host,
+                                        struct mmc_command *cmd)
+{
+        u32 ccon, imsk;
+
+        imsk  = S3C2410_SDIIMSK_CRCSTATUS | S3C2410_SDIIMSK_CMDTIMEOUT |
+                S3C2410_SDIIMSK_RESPONSEND | S3C2410_SDIIMSK_CMDSENT |
+                S3C2410_SDIIMSK_RESPONSECRC;
+
+        enable_imask(host, imsk);
+
+        if (cmd->data)
+                host->complete_what = COMPLETION_XFERFINISH_RSPFIN;
+        else if (cmd->flags & MMC_RSP_PRESENT)
+                host->complete_what = COMPLETION_RSPFIN;
+        else
+                host->complete_what = COMPLETION_CMDSENT;
+
+        writel(cmd->arg, host->base + S3C2410_SDICMDARG);
+
+        ccon  = cmd->opcode & S3C2410_SDICMDCON_INDEX;
+        ccon |= S3C2410_SDICMDCON_SENDERHOST | S3C2410_SDICMDCON_CMDSTART;
+
+        if (cmd->flags & MMC_RSP_PRESENT)
+                ccon |= S3C2410_SDICMDCON_WAITRSP;
+
+        if (cmd->flags & MMC_RSP_136)
+                ccon |= S3C2410_SDICMDCON_LONGRSP;
+
+        writel(ccon, host->base + S3C2410_SDICMDCON);
+}
+
+static int s3cmci_setup_data(struct s3cmci_host *host, struct mmc_data *data)
+{
+        u32 dcon, imsk, stoptries = 3;
+
+        /* write DCON register */
+
+        if (!data) {
+                writel(0, host->base + S3C2410_SDIDCON);
+                return 0;
+        }
+
+        if ((data->blksz & 3) != 0) {
+                /* We cannot deal with unaligned blocks with more than
+                 * one block being transfered. */
+
+                if (data->blocks > 1)
+                        return -EINVAL;
+
+                /* No support yet for non-word block transfers. */
+                return -EINVAL;
+        }
+
+        while (readl(host->base + S3C2410_SDIDSTA) &
+               (S3C2410_SDIDSTA_TXDATAON | S3C2410_SDIDSTA_RXDATAON)) {
+
+                dbg(host, dbg_err,
+                    "mci_setup_data() transfer stillin progress.\n");
+
+                writel(S3C2410_SDIDCON_STOP, host->base + S3C2410_SDIDCON);
+                s3cmci_reset(host);
+
+                if ((stoptries--) == 0) {
+                        dbg_dumpregs(host, "DRF");
+                        return -EINVAL;
+                }
+        }
+
+        dcon  = data->blocks & S3C2410_SDIDCON_BLKNUM_MASK;
+
+        if (host->dodma)
+                dcon |= S3C2410_SDIDCON_DMAEN;
+
+        if (host->bus_width == MMC_BUS_WIDTH_4)
+                dcon |= S3C2410_SDIDCON_WIDEBUS;
+
+        if (!(data->flags & MMC_DATA_STREAM))
+                dcon |= S3C2410_SDIDCON_BLOCKMODE;
+
+        if (data->flags & MMC_DATA_WRITE) {
+                dcon |= S3C2410_SDIDCON_TXAFTERRESP;
+                dcon |= S3C2410_SDIDCON_XFER_TXSTART;
+        }
+
+        if (data->flags & MMC_DATA_READ) {
+                dcon |= S3C2410_SDIDCON_RXAFTERCMD;
+                dcon |= S3C2410_SDIDCON_XFER_RXSTART;
+        }
+
+        if (host->is2440) {
+                dcon |= S3C2440_SDIDCON_DS_WORD;
+                dcon |= S3C2440_SDIDCON_DATSTART;
+        }
+
+        writel(dcon, host->base + S3C2410_SDIDCON);
+
+        /* write BSIZE register */
+
+        writel(data->blksz, host->base + S3C2410_SDIBSIZE);
+
+        /* add to IMASK register */
+        imsk = S3C2410_SDIIMSK_FIFOFAIL | S3C2410_SDIIMSK_DATACRC |
+               S3C2410_SDIIMSK_DATATIMEOUT | S3C2410_SDIIMSK_DATAFINISH;
+
+        enable_imask(host, imsk);
+
+        /* write TIMER register */
+
+        if (host->is2440) {
+                writel(0x007FFFFF, host->base + S3C2410_SDITIMER);
+        } else {
+                writel(0x0000FFFF, host->base + S3C2410_SDITIMER);
+
+                /* FIX: set slow clock to prevent timeouts on read */
+                if (data->flags & MMC_DATA_READ)
+                        writel(0xFF, host->base + S3C2410_SDIPRE);
+        }
+
+        return 0;
+}
+
+#define BOTH_DIR (MMC_DATA_WRITE | MMC_DATA_READ)
+
+static int s3cmci_prepare_pio(struct s3cmci_host *host, struct mmc_data *data)
+{
+        int rw = (data->flags & MMC_DATA_WRITE) ? 1 : 0;
+
+        BUG_ON((data->flags & BOTH_DIR) == BOTH_DIR);
+
+        host->pio_sgptr = 0;
+        host->pio_words = 0;
+        host->pio_count = 0;
+        host->pio_active = rw ? XFER_WRITE : XFER_READ;
+
+        if (rw) {
+                do_pio_write(host);
+                enable_imask(host, S3C2410_SDIIMSK_TXFIFOHALF);
+        } else {
+                enable_imask(host, S3C2410_SDIIMSK_RXFIFOHALF
+                             | S3C2410_SDIIMSK_RXFIFOLAST);
+        }
+
+        return 0;
+}
+
+static int s3cmci_prepare_dma(struct s3cmci_host *host, struct mmc_data *data)
+{
+        int dma_len, i;
+        int rw = (data->flags & MMC_DATA_WRITE) ? 1 : 0;
+
+        BUG_ON((data->flags & BOTH_DIR) == BOTH_DIR);
+
+        s3cmci_dma_setup(host, rw ? S3C2410_DMASRC_MEM : S3C2410_DMASRC_HW);
+        s3c2410_dma_ctrl(host->dma, S3C2410_DMAOP_FLUSH);
+
+        dma_len = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
+                             (rw) ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+
+        if (dma_len == 0)
+                return -ENOMEM;
+
+        host->dma_complete = 0;
+        host->dmatogo = dma_len;
+
+        for (i = 0; i < dma_len; i++) {
+                int res;
+
+                dbg(host, dbg_dma, "enqueue %i:%u@%u\n", i,
+                        sg_dma_address(&data->sg[i]),
+                        sg_dma_len(&data->sg[i]));
+
+                res = s3c2410_dma_enqueue(host->dma, (void *) host,
+                                          sg_dma_address(&data->sg[i]),
+                                          sg_dma_len(&data->sg[i]));
+
+                if (res) {
+                        s3c2410_dma_ctrl(host->dma, S3C2410_DMAOP_FLUSH);
+                        return -EBUSY;
+                }
+        }
+
+        s3c2410_dma_ctrl(host->dma, S3C2410_DMAOP_START);
+
+        return 0;
+}
+
+static void s3cmci_send_request(struct mmc_host *mmc)
+{
+        struct s3cmci_host *host = mmc_priv(mmc);
+        struct mmc_request *mrq = host->mrq;
+        struct mmc_command *cmd = host->cmd_is_stop ? mrq->stop : mrq->cmd;
+
+        host->ccnt++;
+        prepare_dbgmsg(host, cmd, host->cmd_is_stop);
+
+        /* Clear command, data and fifo status registers
+           Fifo clear only necessary on 2440, but doesn't hurt on 2410
+        */
+        writel(0xFFFFFFFF, host->base + S3C2410_SDICMDSTAT);
+        writel(0xFFFFFFFF, host->base + S3C2410_SDIDSTA);
+        writel(0xFFFFFFFF, host->base + S3C2410_SDIFSTA);
+
+        if (cmd->data) {
+                int res = s3cmci_setup_data(host, cmd->data);
+
+                host->dcnt++;
+
+                if (res) {
+                        dbg(host, dbg_err, "setup data error %d\n", res);
+                        cmd->error = res;
+                        cmd->data->error = res;
+
+                        mmc_request_done(mmc, mrq);
+                        return;
+                }
+
+                if (host->dodma)
+                        res = s3cmci_prepare_dma(host, cmd->data);
+                else
+                        res = s3cmci_prepare_pio(host, cmd->data);
+
+                if (res) {
+                        dbg(host, dbg_err, "data prepare error %d\n", res);
+                        cmd->error = res;
+                        cmd->data->error = res;
+
+                        mmc_request_done(mmc, mrq);
+                        return;
+                }
+        }
+
+        /* Send command */
+        s3cmci_send_command(host, cmd);
+
+        /* Enable Interrupt */
+        enable_irq(host->irq);
+}
+
+static int s3cmci_card_present(struct s3cmci_host *host)
+{
+        struct s3c24xx_mci_pdata *pdata = host->pdata;
+        int ret;
+
+        if (pdata->gpio_detect == 0)
+                return -ENOSYS;
+
+        ret = s3c2410_gpio_getpin(pdata->gpio_detect) ? 0 : 1;
+        return ret ^ pdata->detect_invert;
+}
+
+static void s3cmci_request(struct mmc_host *mmc, struct mmc_request *mrq)
+{
+        struct s3cmci_host *host = mmc_priv(mmc);
+
+        host->status = "mmc request";
+        host->cmd_is_stop = 0;
+        host->mrq = mrq;
+
+        if (s3cmci_card_present(host) == 0) {
+                dbg(host, dbg_err, "%s: no medium present\n", __func__);
+                host->mrq->cmd->error = -ENOMEDIUM;
+                mmc_request_done(mmc, mrq);
+        } else
+                s3cmci_send_request(mmc);
+}
+
+static void s3cmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+        struct s3cmci_host *host = mmc_priv(mmc);
+        u32 mci_psc, mci_con;
+
+        /* Set the power state */
+
+        mci_con = readl(host->base + S3C2410_SDICON);
+
+        switch (ios->power_mode) {
+        case MMC_POWER_ON:
+        case MMC_POWER_UP:
+                s3c2410_gpio_cfgpin(S3C2410_GPE5, S3C2410_GPE5_SDCLK);
+                s3c2410_gpio_cfgpin(S3C2410_GPE6, S3C2410_GPE6_SDCMD);
+                s3c2410_gpio_cfgpin(S3C2410_GPE7, S3C2410_GPE7_SDDAT0);
+                s3c2410_gpio_cfgpin(S3C2410_GPE8, S3C2410_GPE8_SDDAT1);
+                s3c2410_gpio_cfgpin(S3C2410_GPE9, S3C2410_GPE9_SDDAT2);
+                s3c2410_gpio_cfgpin(S3C2410_GPE10, S3C2410_GPE10_SDDAT3);
+
+                if (host->pdata->set_power)
+                        host->pdata->set_power(ios->power_mode, ios->vdd);
+
+                if (!host->is2440)
+                        mci_con |= S3C2410_SDICON_FIFORESET;
+
+                break;
+
+        case MMC_POWER_OFF:
+        default:
+                s3c2410_gpio_setpin(S3C2410_GPE5, 0);
+                s3c2410_gpio_cfgpin(S3C2410_GPE5, S3C2410_GPE5_OUTP);
+
+                if (host->is2440)
+                        mci_con |= S3C2440_SDICON_SDRESET;
+
+                if (host->pdata->set_power)
+                        host->pdata->set_power(ios->power_mode, ios->vdd);
+
+                break;
+        }
+
+        /* Set clock */
+        for (mci_psc = 0; mci_psc < 255; mci_psc++) {
+                host->real_rate = host->clk_rate / (host->clk_div*(mci_psc+1));
+
+                if (host->real_rate <= ios->clock)
+                        break;
+        }
+
+        if (mci_psc > 255)
+                mci_psc = 255;
+
+        host->prescaler = mci_psc;
+        writel(host->prescaler, host->base + S3C2410_SDIPRE);
+
+        /* If requested clock is 0, real_rate will be 0, too */
+        if (ios->clock == 0)
+                host->real_rate = 0;
+
+        /* Set CLOCK_ENABLE */
+        if (ios->clock)
+                mci_con |= S3C2410_SDICON_CLOCKTYPE;
+        else
+                mci_con &= ~S3C2410_SDICON_CLOCKTYPE;
+
+        writel(mci_con, host->base + S3C2410_SDICON);
+
+        if ((ios->power_mode == MMC_POWER_ON) ||
+            (ios->power_mode == MMC_POWER_UP)) {
+                dbg(host, dbg_conf, "running at %lukHz (requested: %ukHz).\n",
+                        host->real_rate/1000, ios->clock/1000);
+        } else {
+                dbg(host, dbg_conf, "powered down.\n");
+        }
+
+        host->bus_width = ios->bus_width;
+}
+
+static void s3cmci_reset(struct s3cmci_host *host)
+{
+        u32 con = readl(host->base + S3C2410_SDICON);
+
+        con |= S3C2440_SDICON_SDRESET;
+        writel(con, host->base + S3C2410_SDICON);
+}
+
+static int s3cmci_get_ro(struct mmc_host *mmc)
+{
+        struct s3cmci_host *host = mmc_priv(mmc);
+        struct s3c24xx_mci_pdata *pdata = host->pdata;
+        int ret;
+
+        if (pdata->gpio_wprotect == 0)
+                return 0;
+
+        ret = s3c2410_gpio_getpin(pdata->gpio_wprotect);
+
+        if (pdata->wprotect_invert)
+                ret = !ret;
+
+        return ret;
+}
+
+static struct mmc_host_ops s3cmci_ops = {
+        .request        = s3cmci_request,
+        .set_ios        = s3cmci_set_ios,
+        .get_ro         = s3cmci_get_ro,
+};
+
+static struct s3c24xx_mci_pdata s3cmci_def_pdata = {
+        /* This is currently here to avoid a number of if (host->pdata)
+         * checks. Any zero fields to ensure reaonable defaults are picked. */
+};
+
+static int __devinit s3cmci_probe(struct platform_device *pdev, int is2440)
+{
+        struct s3cmci_host *host;
+        struct mmc_host *mmc;
+        int ret;
+
+        mmc = mmc_alloc_host(sizeof(struct s3cmci_host), &pdev->dev);
+        if (!mmc) {
+                ret = -ENOMEM;
+                goto probe_out;
+        }
+
+        host = mmc_priv(mmc);
+        host->mmc       = mmc;
+        host->pdev      = pdev;
+        host->is2440    = is2440;
+
+        host->pdata = pdev->dev.platform_data;
+        if (!host->pdata) {
+                pdev->dev.platform_data = &s3cmci_def_pdata;
+                host->pdata = &s3cmci_def_pdata;
+        }
+
+        spin_lock_init(&host->complete_lock);
+        tasklet_init(&host->pio_tasklet, pio_tasklet, (unsigned long) host);
+
+        if (is2440) {
+                host->sdiimsk   = S3C2440_SDIIMSK;
+                host->sdidata   = S3C2440_SDIDATA;
+                host->clk_div   = 1;
+        } else {
+                host->sdiimsk   = S3C2410_SDIIMSK;
+                host->sdidata   = S3C2410_SDIDATA;
+                host->clk_div   = 2;
+        }
+
+        host->dodma             = 0;
+        host->complete_what     = COMPLETION_NONE;
+        host->pio_active        = XFER_NONE;
+
+        host->dma               = S3CMCI_DMA;
+
+        host->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!host->mem) {
+                dev_err(&pdev->dev,
+                        "failed to get io memory region resouce.\n");
+
+                ret = -ENOENT;
+                goto probe_free_host;
+        }
+
+        host->mem = request_mem_region(host->mem->start,
+                                       RESSIZE(host->mem), pdev->name);
+
+        if (!host->mem) {
+                dev_err(&pdev->dev, "failed to request io memory region.\n");
+                ret = -ENOENT;
+                goto probe_free_host;
+        }
+
+        host->base = ioremap(host->mem->start, RESSIZE(host->mem));
+        if (host->base == 0) {
+                dev_err(&pdev->dev, "failed to ioremap() io memory region.\n");
+                ret = -EINVAL;
+                goto probe_free_mem_region;
+        }
+
+        host->irq = platform_get_irq(pdev, 0);
+        if (host->irq == 0) {
+                dev_err(&pdev->dev, "failed to get interrupt resouce.\n");
+                ret = -EINVAL;
+                goto probe_iounmap;
+        }
+
+        if (request_irq(host->irq, s3cmci_irq, 0, DRIVER_NAME, host)) {
+                dev_err(&pdev->dev, "failed to request mci interrupt.\n");
+                ret = -ENOENT;
+                goto probe_iounmap;
+        }
+
+        /* We get spurious interrupts even when we have set the IMSK
+         * register to ignore everything, so use disable_irq() to make
+         * ensure we don't lock the system with un-serviceable requests. */
+
+        disable_irq(host->irq);
+
+        host->irq_cd = s3c2410_gpio_getirq(host->pdata->gpio_detect);
+
+        if (host->irq_cd >= 0) {
+                if (request_irq(host->irq_cd, s3cmci_irq_cd,
+                                IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+                                DRIVER_NAME, host)) {
+                        dev_err(&pdev->dev, "can't get card detect irq.\n");
+                        ret = -ENOENT;
+                        goto probe_free_irq;
+                }
+        } else {
+                dev_warn(&pdev->dev, "host detect has no irq available\n");
+                s3c2410_gpio_cfgpin(host->pdata->gpio_detect,
+                                    S3C2410_GPIO_INPUT);
+        }
+
+        if (host->pdata->gpio_wprotect)
+                s3c2410_gpio_cfgpin(host->pdata->gpio_wprotect,
+                                    S3C2410_GPIO_INPUT);
+
+        if (s3c2410_dma_request(S3CMCI_DMA, &s3cmci_dma_client, NULL) < 0) {
+                dev_err(&pdev->dev, "unable to get DMA channel.\n");
+                ret = -EBUSY;
+                goto probe_free_irq_cd;
+        }
+
+        host->clk = clk_get(&pdev->dev, "sdi");
+        if (IS_ERR(host->clk)) {
+                dev_err(&pdev->dev, "failed to find clock source.\n");
+                ret = PTR_ERR(host->clk);
+                host->clk = NULL;
+                goto probe_free_host;
+        }
+
+        ret = clk_enable(host->clk);
+        if (ret) {
+                dev_err(&pdev->dev, "failed to enable clock source.\n");
+                goto clk_free;
+        }
+
+        host->clk_rate = clk_get_rate(host->clk);
+
+        mmc->ops        = &s3cmci_ops;
+        mmc->ocr_avail  = MMC_VDD_32_33 | MMC_VDD_33_34;
+        mmc->caps       = MMC_CAP_4_BIT_DATA;
+        mmc->f_min      = host->clk_rate / (host->clk_div * 256);
+        mmc->f_max      = host->clk_rate / host->clk_div;
+
+        if (host->pdata->ocr_avail)
+                mmc->ocr_avail = host->pdata->ocr_avail;
+
+        mmc->max_blk_count      = 4095;
+        mmc->max_blk_size       = 4095;
+        mmc->max_req_size       = 4095 * 512;
+        mmc->max_seg_size       = mmc->max_req_size;
+
+        mmc->max_phys_segs      = 128;
+        mmc->max_hw_segs        = 128;
+
+        dbg(host, dbg_debug,
+            "probe: mode:%s mapped mci_base:%p irq:%u irq_cd:%u dma:%u.\n",
+            (host->is2440?"2440":""),
+            host->base, host->irq, host->irq_cd, host->dma);
+
+        ret = mmc_add_host(mmc);
+        if (ret) {
+                dev_err(&pdev->dev, "failed to add mmc host.\n");
+                goto free_dmabuf;
+        }
+
+        platform_set_drvdata(pdev, mmc);
+        dev_info(&pdev->dev, "initialisation done.\n");
+
+        return 0;
+
+ free_dmabuf:
+        clk_disable(host->clk);
+
+ clk_free:
+        clk_put(host->clk);
+
+ probe_free_irq_cd:
+        if (host->irq_cd >= 0)
+                free_irq(host->irq_cd, host);
+
+ probe_free_irq:
+        free_irq(host->irq, host);
+
+ probe_iounmap:
+        iounmap(host->base);
+
+ probe_free_mem_region:
+        release_mem_region(host->mem->start, RESSIZE(host->mem));
+
+ probe_free_host:
+        mmc_free_host(mmc);
+ probe_out:
+        return ret;
+}
+
+static int __devexit s3cmci_remove(struct platform_device *pdev)
+{
+        struct mmc_host         *mmc  = platform_get_drvdata(pdev);
+        struct s3cmci_host      *host = mmc_priv(mmc);
+
+        mmc_remove_host(mmc);
+
+        clk_disable(host->clk);
+        clk_put(host->clk);
+
+        tasklet_disable(&host->pio_tasklet);
+        s3c2410_dma_free(S3CMCI_DMA, &s3cmci_dma_client);
+
+        if (host->irq_cd >= 0)
+                free_irq(host->irq_cd, host);
+        free_irq(host->irq, host);
+
+        iounmap(host->base);
+        release_mem_region(host->mem->start, RESSIZE(host->mem));
+
+        mmc_free_host(mmc);
+        return 0;
+}
+
+static int __devinit s3cmci_probe_2410(struct platform_device *dev)
+{
+        return s3cmci_probe(dev, 0);
+}
+
+static int __devinit s3cmci_probe_2412(struct platform_device *dev)
+{
+        return s3cmci_probe(dev, 1);
+}
+
+static int __devinit s3cmci_probe_2440(struct platform_device *dev)
+{
+        return s3cmci_probe(dev, 1);
+}
+
+#ifdef CONFIG_PM
+
+static int s3cmci_suspend(struct platform_device *dev, pm_message_t state)
+{
+        struct mmc_host *mmc = platform_get_drvdata(dev);
+
+        return  mmc_suspend_host(mmc, state);
+}
+
+static int s3cmci_resume(struct platform_device *dev)
+{
+        struct mmc_host *mmc = platform_get_drvdata(dev);
+
+        return mmc_resume_host(mmc);
+}
+
+#else /* CONFIG_PM */
+#define s3cmci_suspend NULL
+#define s3cmci_resume NULL
+#endif /* CONFIG_PM */
+
+
+static struct platform_driver s3cmci_driver_2410 = {
+        .driver.name    = "s3c2410-sdi",
+        .driver.owner   = THIS_MODULE,
+        .probe          = s3cmci_probe_2410,
+        .remove         = __devexit_p(s3cmci_remove),
+        .suspend        = s3cmci_suspend,
+        .resume         = s3cmci_resume,
+};
+
+static struct platform_driver s3cmci_driver_2412 = {
+        .driver.name    = "s3c2412-sdi",
+        .driver.owner   = THIS_MODULE,
+        .probe          = s3cmci_probe_2412,
+        .remove         = __devexit_p(s3cmci_remove),
+        .suspend        = s3cmci_suspend,
+        .resume         = s3cmci_resume,
+};
+
+static struct platform_driver s3cmci_driver_2440 = {
+        .driver.name    = "s3c2440-sdi",
+        .driver.owner   = THIS_MODULE,
+        .probe          = s3cmci_probe_2440,
+        .remove         = __devexit_p(s3cmci_remove),
+        .suspend        = s3cmci_suspend,
+        .resume         = s3cmci_resume,
+};
+
+
+static int __init s3cmci_init(void)
+{
+        platform_driver_register(&s3cmci_driver_2410);
+        platform_driver_register(&s3cmci_driver_2412);
+        platform_driver_register(&s3cmci_driver_2440);
+        return 0;
+}
+
+static void __exit s3cmci_exit(void)
+{
+        platform_driver_unregister(&s3cmci_driver_2410);
+        platform_driver_unregister(&s3cmci_driver_2412);
+        platform_driver_unregister(&s3cmci_driver_2440);
+}
+
+module_init(s3cmci_init);
+module_exit(s3cmci_exit);
+
+MODULE_DESCRIPTION("Samsung S3C MMC/SD Card Interface driver");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Thomas Kleffel <tk@maintech.de>");
+MODULE_ALIAS("platform:s3c2410-sdi");
+MODULE_ALIAS("platform:s3c2412-sdi");
+MODULE_ALIAS("platform:s3c2440-sdi");
diff --git a/drivers/mmc/host/s3cmci.h b/drivers/mmc/host/s3cmci.h
new file mode 100644
index 000000000000..37d9c60010c9
--- /dev/null
+++ b/drivers/mmc/host/s3cmci.h
@@ -0,0 +1,70 @@
+/*
+ *  linux/drivers/mmc/s3cmci.h - Samsung S3C MCI driver
+ *
+ *  Copyright (C) 2004-2006 Thomas Kleffel, All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/* FIXME: DMA Resource management ?! */
+#define S3CMCI_DMA 0
+
+enum s3cmci_waitfor {
+        COMPLETION_NONE,
+        COMPLETION_FINALIZE,
+        COMPLETION_CMDSENT,
+        COMPLETION_RSPFIN,
+        COMPLETION_XFERFINISH,
+        COMPLETION_XFERFINISH_RSPFIN,
+};
+
+struct s3cmci_host {
+        struct platform_device  *pdev;
+        struct s3c24xx_mci_pdata *pdata;
+        struct mmc_host         *mmc;
+        struct resource         *mem;
+        struct clk              *clk;
+        void __iomem            *base;
+        int                     irq;
+        int                     irq_cd;
+        int                     dma;
+
+        unsigned long           clk_rate;
+        unsigned long           clk_div;
+        unsigned long           real_rate;
+        u8                      prescaler;
+
+        int                     is2440;
+        unsigned                sdiimsk;
+        unsigned                sdidata;
+        int                     dodma;
+        int                     dmatogo;
+
+        struct mmc_request      *mrq;
+        int                     cmd_is_stop;
+
+        spinlock_t              complete_lock;
+        enum s3cmci_waitfor     complete_what;
+
+        int                     dma_complete;
+
+        u32                     pio_sgptr;
+        u32                     pio_words;
+        u32                     pio_count;
+        u32                     *pio_ptr;
+#define XFER_NONE 0
+#define XFER_READ 1
+#define XFER_WRITE 2
+        u32                     pio_active;
+
+        int                     bus_width;
+
+        char                    dbgmsg_cmd[301];
+        char                    dbgmsg_dat[301];
+        char                    *status;
+
+        unsigned int            ccnt, dcnt;
+        struct tasklet_struct   pio_tasklet;
+};
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
new file mode 100644
index 000000000000..deb607c52c0d
--- /dev/null
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -0,0 +1,732 @@
+/*  linux/drivers/mmc/host/sdhci-pci.c - SDHCI on PCI bus interface
+ *
+ *  Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * Thanks to the following companies for their support:
+ *
+ *     - JMicron (hardware and technical support)
+ */
+
+#include <linux/delay.h>
+#include <linux/highmem.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+
+#include <linux/mmc/host.h>
+
+#include <asm/scatterlist.h>
+#include <asm/io.h>
+
+#include "sdhci.h"
+
+/*
+ * PCI registers
+ */
+
+#define PCI_SDHCI_IFPIO                 0x00
+#define PCI_SDHCI_IFDMA                 0x01
+#define PCI_SDHCI_IFVENDOR              0x02
+
+#define PCI_SLOT_INFO                   0x40    /* 8 bits */
+#define  PCI_SLOT_INFO_SLOTS(x)         ((x >> 4) & 7)
+#define  PCI_SLOT_INFO_FIRST_BAR_MASK   0x07
+
+#define MAX_SLOTS                       8
+
+struct sdhci_pci_chip;
+struct sdhci_pci_slot;
+
+struct sdhci_pci_fixes {
+        unsigned int            quirks;
+
+        int                     (*probe)(struct sdhci_pci_chip*);
+
+        int                     (*probe_slot)(struct sdhci_pci_slot*);
+        void                    (*remove_slot)(struct sdhci_pci_slot*, int);
+
+        int                     (*suspend)(struct sdhci_pci_chip*,
+                                        pm_message_t);
+        int                     (*resume)(struct sdhci_pci_chip*);
+};
+
+struct sdhci_pci_slot {
+        struct sdhci_pci_chip   *chip;
+        struct sdhci_host       *host;
+
+        int                     pci_bar;
+};
+
+struct sdhci_pci_chip {
+        struct pci_dev          *pdev;
+
+        unsigned int            quirks;
+        const struct sdhci_pci_fixes *fixes;
+
+        int                     num_slots;      /* Slots on controller */
+        struct sdhci_pci_slot   *slots[MAX_SLOTS]; /* Pointers to host slots */
+};
+
+
+/*****************************************************************************\
+ *                                                                           *
+ * Hardware specific quirk handling                                          *
+ *                                                                           *
+\*****************************************************************************/
+
+static int ricoh_probe(struct sdhci_pci_chip *chip)
+{
+        if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_IBM)
+                chip->quirks |= SDHCI_QUIRK_CLOCK_BEFORE_RESET;
+
+        if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)
+                chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
+
+        return 0;
+}
+
+static const struct sdhci_pci_fixes sdhci_ricoh = {
+        .probe          = ricoh_probe,
+        .quirks         = SDHCI_QUIRK_32BIT_DMA_ADDR,
+};
+
+static const struct sdhci_pci_fixes sdhci_ene_712 = {
+        .quirks         = SDHCI_QUIRK_SINGLE_POWER_WRITE |
+                          SDHCI_QUIRK_BROKEN_DMA,
+};
+
+static const struct sdhci_pci_fixes sdhci_ene_714 = {
+        .quirks         = SDHCI_QUIRK_SINGLE_POWER_WRITE |
+                          SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
+                          SDHCI_QUIRK_BROKEN_DMA,
+};
+
+static const struct sdhci_pci_fixes sdhci_cafe = {
+        .quirks         = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
+                          SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
+};
+
+static int jmicron_pmos(struct sdhci_pci_chip *chip, int on)
+{
+        u8 scratch;
+        int ret;
+
+        ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch);
+        if (ret)
+                return ret;
+
+        /*
+         * Turn PMOS on [bit 0], set over current detection to 2.4 V
+         * [bit 1:2] and enable over current debouncing [bit 6].
+         */
+        if (on)
+                scratch |= 0x47;
+        else
+                scratch &= ~0x47;
+
+        ret = pci_write_config_byte(chip->pdev, 0xAE, scratch);
+        if (ret)
+                return ret;
+
+        return 0;
+}
+
+static int jmicron_probe(struct sdhci_pci_chip *chip)
+{
+        int ret;
+
+        if (chip->pdev->revision == 0) {
+                chip->quirks |= SDHCI_QUIRK_32BIT_DMA_ADDR |
+                          SDHCI_QUIRK_32BIT_DMA_SIZE |
+                          SDHCI_QUIRK_32BIT_ADMA_SIZE |
+                          SDHCI_QUIRK_RESET_AFTER_REQUEST;
+        }
+
+        /*
+         * JMicron chips can have two interfaces to the same hardware
+         * in order to work around limitations in Microsoft's driver.
+         * We need to make sure we only bind to one of them.
+         *
+         * This code assumes two things:
+         *
+         * 1. The PCI code adds subfunctions in order.
+         *
+         * 2. The MMC interface has a lower subfunction number
+         *    than the SD interface.
+         */
+        if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD) {
+                struct pci_dev *sd_dev;
+
+                sd_dev = NULL;
+                while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON,
+                        PCI_DEVICE_ID_JMICRON_JMB38X_MMC, sd_dev)) != NULL) {
+                        if ((PCI_SLOT(chip->pdev->devfn) ==
+                                PCI_SLOT(sd_dev->devfn)) &&
+                                (chip->pdev->bus == sd_dev->bus))
+                                break;
+                }
+
+                if (sd_dev) {
+                        pci_dev_put(sd_dev);
+                        dev_info(&chip->pdev->dev, "Refusing to bind to "
+                                "secondary interface.\n");
+                        return -ENODEV;
+                }
+        }
+
+        /*
+         * JMicron chips need a bit of a nudge to enable the power
+         * output pins.
+         */
+        ret = jmicron_pmos(chip, 1);
+        if (ret) {
+                dev_err(&chip->pdev->dev, "Failure enabling card power\n");
+                return ret;
+        }
+
+        return 0;
+}
+
+static void jmicron_enable_mmc(struct sdhci_host *host, int on)
+{
+        u8 scratch;
+
+        scratch = readb(host->ioaddr + 0xC0);
+
+        if (on)
+                scratch |= 0x01;
+        else
+                scratch &= ~0x01;
+
+        writeb(scratch, host->ioaddr + 0xC0);
+}
+
+static int jmicron_probe_slot(struct sdhci_pci_slot *slot)
+{
+        if (slot->chip->pdev->revision == 0) {
+                u16 version;
+
+                version = readl(slot->host->ioaddr + SDHCI_HOST_VERSION);
+                version = (version & SDHCI_VENDOR_VER_MASK) >>
+                        SDHCI_VENDOR_VER_SHIFT;
+
+                /*
+                 * Older versions of the chip have lots of nasty glitches
+                 * in the ADMA engine. It's best just to avoid it
+                 * completely.
+                 */
+                if (version < 0xAC)
+                        slot->host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
+        }
+
+        /*
+         * The secondary interface requires a bit set to get the
+         * interrupts.
+         */
+        if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC)
+                jmicron_enable_mmc(slot->host, 1);
+
+        return 0;
+}
+
+static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead)
+{
+        if (dead)
+                return;
+
+        if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC)
+                jmicron_enable_mmc(slot->host, 0);
+}
+
+static int jmicron_suspend(struct sdhci_pci_chip *chip, pm_message_t state)
+{
+        int i;
+
+        if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC) {
+                for (i = 0;i < chip->num_slots;i++)
+                        jmicron_enable_mmc(chip->slots[i]->host, 0);
+        }
+
+        return 0;
+}
+
+static int jmicron_resume(struct sdhci_pci_chip *chip)
+{
+        int ret, i;
+
+        if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC) {
+                for (i = 0;i < chip->num_slots;i++)
+                        jmicron_enable_mmc(chip->slots[i]->host, 1);
+        }
+
+        ret = jmicron_pmos(chip, 1);
+        if (ret) {
+                dev_err(&chip->pdev->dev, "Failure enabling card power\n");
+                return ret;
+        }
+
+        return 0;
+}
+
+static const struct sdhci_pci_fixes sdhci_jmicron = {
+        .probe          = jmicron_probe,
+
+        .probe_slot     = jmicron_probe_slot,
+        .remove_slot    = jmicron_remove_slot,
+
+        .suspend        = jmicron_suspend,
+        .resume         = jmicron_resume,
+};
+
+static const struct pci_device_id pci_ids[] __devinitdata = {
+        {
+                .vendor         = PCI_VENDOR_ID_RICOH,
+                .device         = PCI_DEVICE_ID_RICOH_R5C822,
+                .subvendor      = PCI_ANY_ID,
+                .subdevice      = PCI_ANY_ID,
+                .driver_data    = (kernel_ulong_t)&sdhci_ricoh,
+        },
+
+        {
+                .vendor         = PCI_VENDOR_ID_ENE,
+                .device         = PCI_DEVICE_ID_ENE_CB712_SD,
+                .subvendor      = PCI_ANY_ID,
+                .subdevice      = PCI_ANY_ID,
+                .driver_data    = (kernel_ulong_t)&sdhci_ene_712,
+        },
+
+        {
+                .vendor         = PCI_VENDOR_ID_ENE,
+                .device         = PCI_DEVICE_ID_ENE_CB712_SD_2,
+                .subvendor      = PCI_ANY_ID,
+                .subdevice      = PCI_ANY_ID,
+                .driver_data    = (kernel_ulong_t)&sdhci_ene_712,
+        },
+
+        {
+                .vendor         = PCI_VENDOR_ID_ENE,
+                .device         = PCI_DEVICE_ID_ENE_CB714_SD,
+                .subvendor      = PCI_ANY_ID,
+                .subdevice      = PCI_ANY_ID,
+                .driver_data    = (kernel_ulong_t)&sdhci_ene_714,
+        },
+
+        {
+                .vendor         = PCI_VENDOR_ID_ENE,
+                .device         = PCI_DEVICE_ID_ENE_CB714_SD_2,
+                .subvendor      = PCI_ANY_ID,
+                .subdevice      = PCI_ANY_ID,
+                .driver_data    = (kernel_ulong_t)&sdhci_ene_714,
+        },
+
+        {
+                .vendor         = PCI_VENDOR_ID_MARVELL,
+                .device         = PCI_DEVICE_ID_MARVELL_CAFE_SD,
+                .subvendor      = PCI_ANY_ID,
+                .subdevice      = PCI_ANY_ID,
+                .driver_data    = (kernel_ulong_t)&sdhci_cafe,
+        },
+
+        {
+                .vendor         = PCI_VENDOR_ID_JMICRON,
+                .device         = PCI_DEVICE_ID_JMICRON_JMB38X_SD,
+                .subvendor      = PCI_ANY_ID,
+                .subdevice      = PCI_ANY_ID,
+                .driver_data    = (kernel_ulong_t)&sdhci_jmicron,
+        },
+
+        {
+                .vendor         = PCI_VENDOR_ID_JMICRON,
+                .device         = PCI_DEVICE_ID_JMICRON_JMB38X_MMC,
+                .subvendor      = PCI_ANY_ID,
+                .subdevice      = PCI_ANY_ID,
+                .driver_data    = (kernel_ulong_t)&sdhci_jmicron,
+        },
+
+        {       /* Generic SD host controller */
+                PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
+        },
+
+        { /* end: all zeroes */ },
+};
+
+MODULE_DEVICE_TABLE(pci, pci_ids);
+
+/*****************************************************************************\
+ *                                                                           *
+ * SDHCI core callbacks                                                      *
+ *                                                                           *
+\*****************************************************************************/
+
+static int sdhci_pci_enable_dma(struct sdhci_host *host)
+{
+        struct sdhci_pci_slot *slot;
+        struct pci_dev *pdev;
+        int ret;
+
+        slot = sdhci_priv(host);
+        pdev = slot->chip->pdev;
+
+        if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) &&
+                ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) &&
+                (host->flags & SDHCI_USE_DMA)) {
+                dev_warn(&pdev->dev, "Will use DMA mode even though HW "
+                        "doesn't fully claim to support it.\n");
+        }
+
+        ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
+        if (ret)
+                return ret;
+
+        pci_set_master(pdev);
+
+        return 0;
+}
+
+static struct sdhci_ops sdhci_pci_ops = {
+        .enable_dma     = sdhci_pci_enable_dma,
+};
+
+/*****************************************************************************\
+ *                                                                           *
+ * Suspend/resume                                                            *
+ *                                                                           *
+\*****************************************************************************/
+
+#ifdef CONFIG_PM
+
+static int sdhci_pci_suspend (struct pci_dev *pdev, pm_message_t state)
+{
+        struct sdhci_pci_chip *chip;
+        struct sdhci_pci_slot *slot;
+        int i, ret;
+
+        chip = pci_get_drvdata(pdev);
+        if (!chip)
+                return 0;
+
+        for (i = 0;i < chip->num_slots;i++) {
+                slot = chip->slots[i];
+                if (!slot)
+                        continue;
+
+                ret = sdhci_suspend_host(slot->host, state);
+
+                if (ret) {
+                        for (i--;i >= 0;i--)
+                                sdhci_resume_host(chip->slots[i]->host);
+                        return ret;
+                }
+        }
+
+        if (chip->fixes && chip->fixes->suspend) {
+                ret = chip->fixes->suspend(chip, state);
+                if (ret) {
+                        for (i = chip->num_slots - 1;i >= 0;i--)
+                                sdhci_resume_host(chip->slots[i]->host);
+                        return ret;
+                }
+        }
+
+        pci_save_state(pdev);
+        pci_enable_wake(pdev, pci_choose_state(pdev, state), 0);
+        pci_disable_device(pdev);
+        pci_set_power_state(pdev, pci_choose_state(pdev, state));
+
+        return 0;
+}
+
+static int sdhci_pci_resume (struct pci_dev *pdev)
+{
+        struct sdhci_pci_chip *chip;
+        struct sdhci_pci_slot *slot;
+        int i, ret;
+
+        chip = pci_get_drvdata(pdev);
+        if (!chip)
+                return 0;
+
+        pci_set_power_state(pdev, PCI_D0);
+        pci_restore_state(pdev);
+        ret = pci_enable_device(pdev);
+        if (ret)
+                return ret;
+
+        if (chip->fixes && chip->fixes->resume) {
+                ret = chip->fixes->resume(chip);
+                if (ret)
+                        return ret;
+        }
+
+        for (i = 0;i < chip->num_slots;i++) {
+                slot = chip->slots[i];
+                if (!slot)
+                        continue;
+
+                ret = sdhci_resume_host(slot->host);
+                if (ret)
+                        return ret;
+        }
+
+        return 0;
+}
+
+#else /* CONFIG_PM */
+
+#define sdhci_pci_suspend NULL
+#define sdhci_pci_resume NULL
+
+#endif /* CONFIG_PM */
+
+/*****************************************************************************\
+ *                                                                           *
+ * Device probing/removal                                                    *
+ *                                                                           *
+\*****************************************************************************/
+
+static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot(
+        struct pci_dev *pdev, struct sdhci_pci_chip *chip, int bar)
+{
+        struct sdhci_pci_slot *slot;
+        struct sdhci_host *host;
+
+        resource_size_t addr;
+
+        int ret;
+
+        if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
+                dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
+                return ERR_PTR(-ENODEV);
+        }
+
+        if (pci_resource_len(pdev, bar) != 0x100) {
+                dev_err(&pdev->dev, "Invalid iomem size. You may "
+                        "experience problems.\n");
+        }
+
+        if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
+                dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n");
+                return ERR_PTR(-ENODEV);
+        }
+
+        if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) {
+                dev_err(&pdev->dev, "Unknown interface. Aborting.\n");
+                return ERR_PTR(-ENODEV);
+        }
+
+        host = sdhci_alloc_host(&pdev->dev, sizeof(struct sdhci_pci_slot));
+        if (IS_ERR(host)) {
+                ret = PTR_ERR(host);
+                goto unmap;
+        }
+
+        slot = sdhci_priv(host);
+
+        slot->chip = chip;
+        slot->host = host;
+        slot->pci_bar = bar;
+
+        host->hw_name = "PCI";
+        host->ops = &sdhci_pci_ops;
+        host->quirks = chip->quirks;
+
+        host->irq = pdev->irq;
+
+        ret = pci_request_region(pdev, bar, mmc_hostname(host->mmc));
+        if (ret) {
+                dev_err(&pdev->dev, "cannot request region\n");
+                return ERR_PTR(ret);
+        }
+
+        addr = pci_resource_start(pdev, bar);
+        host->ioaddr = ioremap_nocache(addr, pci_resource_len(pdev, bar));
+        if (!host->ioaddr) {
+                dev_err(&pdev->dev, "failed to remap registers\n");
+                goto release;
+        }
+
+        if (chip->fixes && chip->fixes->probe_slot) {
+                ret = chip->fixes->probe_slot(slot);
+                if (ret)
+                        goto unmap;
+        }
+
+        ret = sdhci_add_host(host);
+        if (ret)
+                goto remove;
+
+        return slot;
+
+remove:
+        if (chip->fixes && chip->fixes->remove_slot)
+                chip->fixes->remove_slot(slot, 0);
+
+unmap:
+        iounmap(host->ioaddr);
+
+release:
+        pci_release_region(pdev, bar);
+        sdhci_free_host(host);
+
+        return ERR_PTR(ret);
+}
+
+static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
+{
+        int dead;
+        u32 scratch;
+
+        dead = 0;
+        scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS);
+        if (scratch == (u32)-1)
+                dead = 1;
+
+        sdhci_remove_host(slot->host, dead);
+
+        if (slot->chip->fixes && slot->chip->fixes->remove_slot)
+                slot->chip->fixes->remove_slot(slot, dead);
+
+        pci_release_region(slot->chip->pdev, slot->pci_bar);
+
+        sdhci_free_host(slot->host);
+}
+
+static int __devinit sdhci_pci_probe(struct pci_dev *pdev,
+                                     const struct pci_device_id *ent)
+{
+        struct sdhci_pci_chip *chip;
+        struct sdhci_pci_slot *slot;
+
+        u8 slots, rev, first_bar;
+        int ret, i;
+
+        BUG_ON(pdev == NULL);
+        BUG_ON(ent == NULL);
+
+        pci_read_config_byte(pdev, PCI_CLASS_REVISION, &rev);
+
+        dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n",
+                 (int)pdev->vendor, (int)pdev->device, (int)rev);
+
+        ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
+        if (ret)
+                return ret;
+
+        slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
+        dev_dbg(&pdev->dev, "found %d slot(s)\n", slots);
+        if (slots == 0)
+                return -ENODEV;
+
+        BUG_ON(slots > MAX_SLOTS);
+
+        ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
+        if (ret)
+                return ret;
+
+        first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
+
+        if (first_bar > 5) {
+                dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n");
+                return -ENODEV;
+        }
+
+        ret = pci_enable_device(pdev);
+        if (ret)
+                return ret;
+
+        chip = kzalloc(sizeof(struct sdhci_pci_chip), GFP_KERNEL);
+        if (!chip) {
+                ret = -ENOMEM;
+                goto err;
+        }
+
+        chip->pdev = pdev;
+        chip->fixes = (const struct sdhci_pci_fixes*)ent->driver_data;
+        if (chip->fixes)
+                chip->quirks = chip->fixes->quirks;
+        chip->num_slots = slots;
+
+        pci_set_drvdata(pdev, chip);
+
+        if (chip->fixes && chip->fixes->probe) {
+                ret = chip->fixes->probe(chip);
+                if (ret)
+                        goto free;
+        }
+
+        for (i = 0;i < slots;i++) {
+                slot = sdhci_pci_probe_slot(pdev, chip, first_bar + i);
+                if (IS_ERR(slot)) {
+                        for (i--;i >= 0;i--)
+                                sdhci_pci_remove_slot(chip->slots[i]);
+                        ret = PTR_ERR(slot);
+                        goto free;
+                }
+
+                chip->slots[i] = slot;
+        }
+
+        return 0;
+
+free:
+        pci_set_drvdata(pdev, NULL);
+        kfree(chip);
+
+err:
+        pci_disable_device(pdev);
+        return ret;
+}
+
+static void __devexit sdhci_pci_remove(struct pci_dev *pdev)
+{
+        int i;
+        struct sdhci_pci_chip *chip;
+
+        chip = pci_get_drvdata(pdev);
+
+        if (chip) {
+                for (i = 0;i < chip->num_slots; i++)
+                        sdhci_pci_remove_slot(chip->slots[i]);
+
+                pci_set_drvdata(pdev, NULL);
+                kfree(chip);
+        }
+
+        pci_disable_device(pdev);
+}
+
+static struct pci_driver sdhci_driver = {
+        .name =         "sdhci-pci",
+        .id_table =     pci_ids,
+        .probe =        sdhci_pci_probe,
+        .remove =       __devexit_p(sdhci_pci_remove),
+        .suspend =      sdhci_pci_suspend,
+        .resume =       sdhci_pci_resume,
+};
+
+/*****************************************************************************\
+ *                                                                           *
+ * Driver init/exit                                                          *
+ *                                                                           *
+\*****************************************************************************/
+
+static int __init sdhci_drv_init(void)
+{
+        return pci_register_driver(&sdhci_driver);
+}
+
+static void __exit sdhci_drv_exit(void)
+{
+        pci_unregister_driver(&sdhci_driver);
+}
+
+module_init(sdhci_drv_init);
+module_exit(sdhci_drv_exit);
+
+MODULE_AUTHOR("Pierre Ossman <drzeus@drzeus.cx>");
+MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index b413aa6c246b..17701c3da733 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -15,7 +15,7 @@
 
 #include <linux/delay.h>
 #include <linux/highmem.h>
-#include <linux/pci.h>
+#include <linux/io.h>
 #include <linux/dma-mapping.h>
 #include <linux/scatterlist.h>
 
@@ -32,135 +32,6 @@
 
 static unsigned int debug_quirks = 0;
 
-/*
- * Different quirks to handle when the hardware deviates from a strict
- * interpretation of the SDHCI specification.
- */
-
-/* Controller doesn't honor resets unless we touch the clock register */
-#define SDHCI_QUIRK_CLOCK_BEFORE_RESET                  (1<<0)
-/* Controller has bad caps bits, but really supports DMA */
-#define SDHCI_QUIRK_FORCE_DMA                           (1<<1)
-/* Controller doesn't like to be reset when there is no card inserted. */
-#define SDHCI_QUIRK_NO_CARD_NO_RESET                    (1<<2)
-/* Controller doesn't like clearing the power reg before a change */
-#define SDHCI_QUIRK_SINGLE_POWER_WRITE                  (1<<3)
-/* Controller has flaky internal state so reset it on each ios change */
-#define SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS               (1<<4)
-/* Controller has an unusable DMA engine */
-#define SDHCI_QUIRK_BROKEN_DMA                          (1<<5)
-/* Controller can only DMA from 32-bit aligned addresses */
-#define SDHCI_QUIRK_32BIT_DMA_ADDR                      (1<<6)
-/* Controller can only DMA chunk sizes that are a multiple of 32 bits */
-#define SDHCI_QUIRK_32BIT_DMA_SIZE                      (1<<7)
-/* Controller needs to be reset after each request to stay stable */
-#define SDHCI_QUIRK_RESET_AFTER_REQUEST                 (1<<8)
-/* Controller needs voltage and power writes to happen separately */
-#define SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER             (1<<9)
-/* Controller has an off-by-one issue with timeout value */
-#define SDHCI_QUIRK_INCR_TIMEOUT_CONTROL                (1<<10)
-
-static const struct pci_device_id pci_ids[] __devinitdata = {
-        {
-                .vendor         = PCI_VENDOR_ID_RICOH,
-                .device         = PCI_DEVICE_ID_RICOH_R5C822,
-                .subvendor      = PCI_VENDOR_ID_IBM,
-                .subdevice      = PCI_ANY_ID,
-                .driver_data    = SDHCI_QUIRK_CLOCK_BEFORE_RESET |
-                                  SDHCI_QUIRK_FORCE_DMA,
-        },
-
-        {
-                .vendor         = PCI_VENDOR_ID_RICOH,
-                .device         = PCI_DEVICE_ID_RICOH_R5C822,
-                .subvendor      = PCI_VENDOR_ID_SAMSUNG,
-                .subdevice      = PCI_ANY_ID,
-                .driver_data    = SDHCI_QUIRK_FORCE_DMA |
-                                  SDHCI_QUIRK_NO_CARD_NO_RESET,
-        },
-
-        {
-                .vendor         = PCI_VENDOR_ID_RICOH,
-                .device         = PCI_DEVICE_ID_RICOH_R5C822,
-                .subvendor      = PCI_ANY_ID,
-                .subdevice      = PCI_ANY_ID,
-                .driver_data    = SDHCI_QUIRK_FORCE_DMA,
-        },
-
-        {
-                .vendor         = PCI_VENDOR_ID_TI,
-                .device         = PCI_DEVICE_ID_TI_XX21_XX11_SD,
-                .subvendor      = PCI_ANY_ID,
-                .subdevice      = PCI_ANY_ID,
-                .driver_data    = SDHCI_QUIRK_FORCE_DMA,
-        },
-
-        {
-                .vendor         = PCI_VENDOR_ID_ENE,
-                .device         = PCI_DEVICE_ID_ENE_CB712_SD,
-                .subvendor      = PCI_ANY_ID,
-                .subdevice      = PCI_ANY_ID,
-                .driver_data    = SDHCI_QUIRK_SINGLE_POWER_WRITE |
-                                  SDHCI_QUIRK_BROKEN_DMA,
-        },
-
-        {
-                .vendor         = PCI_VENDOR_ID_ENE,
-                .device         = PCI_DEVICE_ID_ENE_CB712_SD_2,
-                .subvendor      = PCI_ANY_ID,
-                .subdevice      = PCI_ANY_ID,
-                .driver_data    = SDHCI_QUIRK_SINGLE_POWER_WRITE |
-                                  SDHCI_QUIRK_BROKEN_DMA,
-        },
-
-        {
-                .vendor         = PCI_VENDOR_ID_ENE,
-                .device         = PCI_DEVICE_ID_ENE_CB714_SD,
-                .subvendor      = PCI_ANY_ID,
-                .subdevice      = PCI_ANY_ID,
-                .driver_data    = SDHCI_QUIRK_SINGLE_POWER_WRITE |
-                                  SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
-                                  SDHCI_QUIRK_BROKEN_DMA,
-        },
-
-        {
-                .vendor         = PCI_VENDOR_ID_ENE,
-                .device         = PCI_DEVICE_ID_ENE_CB714_SD_2,
-                .subvendor      = PCI_ANY_ID,
-                .subdevice      = PCI_ANY_ID,
-                .driver_data    = SDHCI_QUIRK_SINGLE_POWER_WRITE |
-                                  SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
-                                  SDHCI_QUIRK_BROKEN_DMA,
-        },
-
-        {
-                .vendor         = PCI_VENDOR_ID_MARVELL,
-                .device         = PCI_DEVICE_ID_MARVELL_CAFE_SD,
-                .subvendor      = PCI_ANY_ID,
-                .subdevice      = PCI_ANY_ID,
-                .driver_data    = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
-                                  SDHCI_QUIRK_INCR_TIMEOUT_CONTROL,
-        },
-
-        {
-                .vendor         = PCI_VENDOR_ID_JMICRON,
-                .device         = PCI_DEVICE_ID_JMICRON_JMB38X_SD,
-                .subvendor      = PCI_ANY_ID,
-                .subdevice      = PCI_ANY_ID,
-                .driver_data    = SDHCI_QUIRK_32BIT_DMA_ADDR |
-                                  SDHCI_QUIRK_32BIT_DMA_SIZE |
-                                  SDHCI_QUIRK_RESET_AFTER_REQUEST,
-        },
-
-        {       /* Generic SD host controller */
-                PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
-        },
-
-        { /* end: all zeroes */ },
-};
-
-MODULE_DEVICE_TABLE(pci, pci_ids);
-
 static void sdhci_prepare_data(struct sdhci_host *, struct mmc_data *);
 static void sdhci_finish_data(struct sdhci_host *);
 
@@ -215,7 +86,7 @@ static void sdhci_reset(struct sdhci_host *host, u8 mask)
 {
         unsigned long timeout;
 
-        if (host->chip->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) {
+        if (host->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) {
                 if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) &
                         SDHCI_CARD_PRESENT))
                         return;
@@ -253,7 +124,8 @@ static void sdhci_init(struct sdhci_host *host)
                 SDHCI_INT_END_BIT | SDHCI_INT_CRC | SDHCI_INT_TIMEOUT |
                 SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT |
                 SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL |
-                SDHCI_INT_DMA_END | SDHCI_INT_DATA_END | SDHCI_INT_RESPONSE;
+                SDHCI_INT_DMA_END | SDHCI_INT_DATA_END | SDHCI_INT_RESPONSE |
+                SDHCI_INT_ADMA_ERROR;
 
         writel(intmask, host->ioaddr + SDHCI_INT_ENABLE);
         writel(intmask, host->ioaddr + SDHCI_SIGNAL_ENABLE);
@@ -443,23 +315,226 @@ static void sdhci_transfer_pio(struct sdhci_host *host)
         DBG("PIO transfer complete.\n");
 }
 
-static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
+static char *sdhci_kmap_atomic(struct scatterlist *sg, unsigned long *flags)
 {
-        u8 count;
-        unsigned target_timeout, current_timeout;
+        local_irq_save(*flags);
+        return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset;
+}
 
-        WARN_ON(host->data);
+static void sdhci_kunmap_atomic(void *buffer, unsigned long *flags)
+{
+        kunmap_atomic(buffer, KM_BIO_SRC_IRQ);
+        local_irq_restore(*flags);
+}
 
-        if (data == NULL)
-                return;
+static int sdhci_adma_table_pre(struct sdhci_host *host,
+        struct mmc_data *data)
+{
+        int direction;
 
-        /* Sanity checks */
-        BUG_ON(data->blksz * data->blocks > 524288);
-        BUG_ON(data->blksz > host->mmc->max_blk_size);
-        BUG_ON(data->blocks > 65535);
+        u8 *desc;
+        u8 *align;
+        dma_addr_t addr;
+        dma_addr_t align_addr;
+        int len, offset;
 
-        host->data = data;
-        host->data_early = 0;
+        struct scatterlist *sg;
+        int i;
+        char *buffer;
+        unsigned long flags;
+
+        /*
+         * The spec does not specify endianness of descriptor table.
+         * We currently guess that it is LE.
+         */
+
+        if (data->flags & MMC_DATA_READ)
+                direction = DMA_FROM_DEVICE;
+        else
+                direction = DMA_TO_DEVICE;
+
+        /*
+         * The ADMA descriptor table is mapped further down as we
+         * need to fill it with data first.
+         */
+
+        host->align_addr = dma_map_single(mmc_dev(host->mmc),
+                host->align_buffer, 128 * 4, direction);
+        if (dma_mapping_error(host->align_addr))
+                goto fail;
+        BUG_ON(host->align_addr & 0x3);
+
+        host->sg_count = dma_map_sg(mmc_dev(host->mmc),
+                data->sg, data->sg_len, direction);
+        if (host->sg_count == 0)
+                goto unmap_align;
+
+        desc = host->adma_desc;
+        align = host->align_buffer;
+
+        align_addr = host->align_addr;
+
+        for_each_sg(data->sg, sg, host->sg_count, i) {
+                addr = sg_dma_address(sg);
+                len = sg_dma_len(sg);
+
+                /*
+                 * The SDHCI specification states that ADMA
+                 * addresses must be 32-bit aligned. If they
+                 * aren't, then we use a bounce buffer for
+                 * the (up to three) bytes that screw up the
+                 * alignment.
+                 */
+                offset = (4 - (addr & 0x3)) & 0x3;
+                if (offset) {
+                        if (data->flags & MMC_DATA_WRITE) {
+                                buffer = sdhci_kmap_atomic(sg, &flags);
+                                memcpy(align, buffer, offset);
+                                sdhci_kunmap_atomic(buffer, &flags);
+                        }
+
+                        desc[7] = (align_addr >> 24) & 0xff;
+                        desc[6] = (align_addr >> 16) & 0xff;
+                        desc[5] = (align_addr >> 8) & 0xff;
+                        desc[4] = (align_addr >> 0) & 0xff;
+
+                        BUG_ON(offset > 65536);
+
+                        desc[3] = (offset >> 8) & 0xff;
+                        desc[2] = (offset >> 0) & 0xff;
+
+                        desc[1] = 0x00;
+                        desc[0] = 0x21; /* tran, valid */
+
+                        align += 4;
+                        align_addr += 4;
+
+                        desc += 8;
+
+                        addr += offset;
+                        len -= offset;
+                }
+
+                desc[7] = (addr >> 24) & 0xff;
+                desc[6] = (addr >> 16) & 0xff;
+                desc[5] = (addr >> 8) & 0xff;
+                desc[4] = (addr >> 0) & 0xff;
+
+                BUG_ON(len > 65536);
+
+                desc[3] = (len >> 8) & 0xff;
+                desc[2] = (len >> 0) & 0xff;
+
+                desc[1] = 0x00;
+                desc[0] = 0x21; /* tran, valid */
+
+                desc += 8;
+
+                /*
+                 * If this triggers then we have a calculation bug
+                 * somewhere. :/
+                 */
+                WARN_ON((desc - host->adma_desc) > (128 * 2 + 1) * 4);
+        }
+
+        /*
+         * Add a terminating entry.
+         */
+        desc[7] = 0;
+        desc[6] = 0;
+        desc[5] = 0;
+        desc[4] = 0;
+
+        desc[3] = 0;
+        desc[2] = 0;
+
+        desc[1] = 0x00;
+        desc[0] = 0x03; /* nop, end, valid */
+
+        /*
+         * Resync align buffer as we might have changed it.
+         */
+        if (data->flags & MMC_DATA_WRITE) {
+                dma_sync_single_for_device(mmc_dev(host->mmc),
+                        host->align_addr, 128 * 4, direction);
+        }
+
+        host->adma_addr = dma_map_single(mmc_dev(host->mmc),
+                host->adma_desc, (128 * 2 + 1) * 4, DMA_TO_DEVICE);
+        if (dma_mapping_error(host->align_addr))
+                goto unmap_entries;
+        BUG_ON(host->adma_addr & 0x3);
+
+        return 0;
+
+unmap_entries:
+        dma_unmap_sg(mmc_dev(host->mmc), data->sg,
+                data->sg_len, direction);
+unmap_align:
+        dma_unmap_single(mmc_dev(host->mmc), host->align_addr,
+                128 * 4, direction);
+fail:
+        return -EINVAL;
+}
+
+static void sdhci_adma_table_post(struct sdhci_host *host,
+        struct mmc_data *data)
+{
+        int direction;
+
+        struct scatterlist *sg;
+        int i, size;
+        u8 *align;
+        char *buffer;
+        unsigned long flags;
+
+        if (data->flags & MMC_DATA_READ)
+                direction = DMA_FROM_DEVICE;
+        else
+                direction = DMA_TO_DEVICE;
+
+        dma_unmap_single(mmc_dev(host->mmc), host->adma_addr,
+                (128 * 2 + 1) * 4, DMA_TO_DEVICE);
+
+        dma_unmap_single(mmc_dev(host->mmc), host->align_addr,
+                128 * 4, direction);
+
+        if (data->flags & MMC_DATA_READ) {
+                dma_sync_sg_for_cpu(mmc_dev(host->mmc), data->sg,
+                        data->sg_len, direction);
+
+                align = host->align_buffer;
+
+                for_each_sg(data->sg, sg, host->sg_count, i) {
+                        if (sg_dma_address(sg) & 0x3) {
+                                size = 4 - (sg_dma_address(sg) & 0x3);
+
+                                buffer = sdhci_kmap_atomic(sg, &flags);
+                                memcpy(buffer, align, size);
+                                sdhci_kunmap_atomic(buffer, &flags);
+
+                                align += 4;
+                        }
+                }
+        }
+
+        dma_unmap_sg(mmc_dev(host->mmc), data->sg,
+                data->sg_len, direction);
+}
+
+static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_data *data)
+{
+        u8 count;
+        unsigned target_timeout, current_timeout;
+
+        /*
+         * If the host controller provides us with an incorrect timeout
+         * value, just skip the check and use 0xE.  The hardware may take
+         * longer to time out, but that's much better than having a too-short
+         * timeout value.
+         */
+        if ((host->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL))
+                return 0xE;
 
         /* timeout in us */
         target_timeout = data->timeout_ns / 1000 +
@@ -484,52 +559,158 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
                         break;
         }
 
-        /*
-         * Compensate for an off-by-one error in the CaFe hardware; otherwise,
-         * a too-small count gives us interrupt timeouts.
-         */
-        if ((host->chip->quirks & SDHCI_QUIRK_INCR_TIMEOUT_CONTROL))
-                count++;
-
         if (count >= 0xF) {
                 printk(KERN_WARNING "%s: Too large timeout requested!\n",
                         mmc_hostname(host->mmc));
                 count = 0xE;
         }
 
+        return count;
+}
+
+static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
+{
+        u8 count;
+        u8 ctrl;
+        int ret;
+
+        WARN_ON(host->data);
+
+        if (data == NULL)
+                return;
+
+        /* Sanity checks */
+        BUG_ON(data->blksz * data->blocks > 524288);
+        BUG_ON(data->blksz > host->mmc->max_blk_size);
+        BUG_ON(data->blocks > 65535);
+
+        host->data = data;
+        host->data_early = 0;
+
+        count = sdhci_calc_timeout(host, data);
         writeb(count, host->ioaddr + SDHCI_TIMEOUT_CONTROL);
 
         if (host->flags & SDHCI_USE_DMA)
                 host->flags |= SDHCI_REQ_USE_DMA;
 
-        if (unlikely((host->flags & SDHCI_REQ_USE_DMA) &&
-                (host->chip->quirks & SDHCI_QUIRK_32BIT_DMA_SIZE) &&
-                ((data->blksz * data->blocks) & 0x3))) {
-                DBG("Reverting to PIO because of transfer size (%d)\n",
-                        data->blksz * data->blocks);
-                host->flags &= ~SDHCI_REQ_USE_DMA;
+        /*
+         * FIXME: This doesn't account for merging when mapping the
+         * scatterlist.
+         */
+        if (host->flags & SDHCI_REQ_USE_DMA) {
+                int broken, i;
+                struct scatterlist *sg;
+
+                broken = 0;
+                if (host->flags & SDHCI_USE_ADMA) {
+                        if (host->quirks & SDHCI_QUIRK_32BIT_ADMA_SIZE)
+                                broken = 1;
+                } else {
+                        if (host->quirks & SDHCI_QUIRK_32BIT_DMA_SIZE)
+                                broken = 1;
+                }
+
+                if (unlikely(broken)) {
+                        for_each_sg(data->sg, sg, data->sg_len, i) {
+                                if (sg->length & 0x3) {
+                                        DBG("Reverting to PIO because of "
+                                                "transfer size (%d)\n",
+                                                sg->length);
+                                        host->flags &= ~SDHCI_REQ_USE_DMA;
+                                        break;
+                                }
+                        }
+                }
         }
 
         /*
          * The assumption here being that alignment is the same after
          * translation to device address space.
          */
-        if (unlikely((host->flags & SDHCI_REQ_USE_DMA) &&
-                (host->chip->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) &&
-                (data->sg->offset & 0x3))) {
-                DBG("Reverting to PIO because of bad alignment\n");
-                host->flags &= ~SDHCI_REQ_USE_DMA;
+        if (host->flags & SDHCI_REQ_USE_DMA) {
+                int broken, i;
+                struct scatterlist *sg;
+
+                broken = 0;
+                if (host->flags & SDHCI_USE_ADMA) {
+                        /*
+                         * As we use 3 byte chunks to work around
+                         * alignment problems, we need to check this
+                         * quirk.
+                         */
+                        if (host->quirks & SDHCI_QUIRK_32BIT_ADMA_SIZE)
+                                broken = 1;
+                } else {
+                        if (host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR)
+                                broken = 1;
+                }
+
+                if (unlikely(broken)) {
+                        for_each_sg(data->sg, sg, data->sg_len, i) {
+                                if (sg->offset & 0x3) {
+                                        DBG("Reverting to PIO because of "
+                                                "bad alignment\n");
+                                        host->flags &= ~SDHCI_REQ_USE_DMA;
+                                        break;
+                                }
+                        }
+                }
         }
 
         if (host->flags & SDHCI_REQ_USE_DMA) {
-                int count;
+                if (host->flags & SDHCI_USE_ADMA) {
+                        ret = sdhci_adma_table_pre(host, data);
+                        if (ret) {
+                                /*
+                                 * This only happens when someone fed
+                                 * us an invalid request.
+                                 */
+                                WARN_ON(1);
+                                host->flags &= ~SDHCI_USE_DMA;
+                        } else {
+                                writel(host->adma_addr,
+                                        host->ioaddr + SDHCI_ADMA_ADDRESS);
+                        }
+                } else {
+                        int sg_cnt;
+
+                        sg_cnt = dma_map_sg(mmc_dev(host->mmc),
+                                        data->sg, data->sg_len,
+                                        (data->flags & MMC_DATA_READ) ?
+                                                DMA_FROM_DEVICE :
+                                                DMA_TO_DEVICE);
+                        if (sg_cnt == 0) {
+                                /*
+                                 * This only happens when someone fed
+                                 * us an invalid request.
+                                 */
+                                WARN_ON(1);
+                                host->flags &= ~SDHCI_USE_DMA;
+                        } else {
+                                WARN_ON(count != 1);
+                                writel(sg_dma_address(data->sg),
+                                        host->ioaddr + SDHCI_DMA_ADDRESS);
+                        }
+                }
+        }
 
-                count = pci_map_sg(host->chip->pdev, data->sg, data->sg_len,
-                        (data->flags & MMC_DATA_READ)?PCI_DMA_FROMDEVICE:PCI_DMA_TODEVICE);
-                BUG_ON(count != 1);
+        /*
+         * Always adjust the DMA selection as some controllers
+         * (e.g. JMicron) can't do PIO properly when the selection
+         * is ADMA.
+         */
+        if (host->version >= SDHCI_SPEC_200) {
+                ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL);
+                ctrl &= ~SDHCI_CTRL_DMA_MASK;
+                if ((host->flags & SDHCI_REQ_USE_DMA) &&
+                        (host->flags & SDHCI_USE_ADMA))
+                        ctrl |= SDHCI_CTRL_ADMA32;
+                else
+                        ctrl |= SDHCI_CTRL_SDMA;
+                writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
+        }
 
-                writel(sg_dma_address(data->sg), host->ioaddr + SDHCI_DMA_ADDRESS);
-        } else {
+        if (!(host->flags & SDHCI_REQ_USE_DMA)) {
                 host->cur_sg = data->sg;
                 host->num_sg = data->sg_len;
 
@@ -567,7 +748,6 @@ static void sdhci_set_transfer_mode(struct sdhci_host *host,
 static void sdhci_finish_data(struct sdhci_host *host)
 {
         struct mmc_data *data;
-        u16 blocks;
 
         BUG_ON(!host->data);
 
@@ -575,25 +755,26 @@ static void sdhci_finish_data(struct sdhci_host *host)
         host->data = NULL;
 
         if (host->flags & SDHCI_REQ_USE_DMA) {
-                pci_unmap_sg(host->chip->pdev, data->sg, data->sg_len,
-                        (data->flags & MMC_DATA_READ)?PCI_DMA_FROMDEVICE:PCI_DMA_TODEVICE);
+                if (host->flags & SDHCI_USE_ADMA)
+                        sdhci_adma_table_post(host, data);
+                else {
+                        dma_unmap_sg(mmc_dev(host->mmc), data->sg,
+                                data->sg_len, (data->flags & MMC_DATA_READ) ?
+                                        DMA_FROM_DEVICE : DMA_TO_DEVICE);
+                }
         }
 
         /*
-         * Controller doesn't count down when in single block mode.
+         * The specification states that the block count register must
+         * be updated, but it does not specify at what point in the
+         * data flow. That makes the register entirely useless to read
+         * back so we have to assume that nothing made it to the card
+         * in the event of an error.
          */
-        if (data->blocks == 1)
-                blocks = (data->error == 0) ? 0 : 1;
+        if (data->error)
+                data->bytes_xfered = 0;
         else
-                blocks = readw(host->ioaddr + SDHCI_BLOCK_COUNT);
-        data->bytes_xfered = data->blksz * (data->blocks - blocks);
-
-        if (!data->error && blocks) {
-                printk(KERN_ERR "%s: Controller signalled completion even "
-                        "though there were blocks left.\n",
-                        mmc_hostname(host->mmc));
-                data->error = -EIO;
-        }
+                data->bytes_xfered = data->blksz * data->blocks;
 
         if (data->stop) {
                 /*
@@ -775,7 +956,7 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
          * Spec says that we should clear the power reg before setting
          * a new value. Some controllers don't seem to like this though.
          */
-        if (!(host->chip->quirks & SDHCI_QUIRK_SINGLE_POWER_WRITE))
+        if (!(host->quirks & SDHCI_QUIRK_SINGLE_POWER_WRITE))
                 writeb(0, host->ioaddr + SDHCI_POWER_CONTROL);
 
         pwr = SDHCI_POWER_ON;
@@ -797,10 +978,10 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
         }
 
         /*
-         * At least the CaFe chip gets confused if we set the voltage
+         * At least the Marvell CaFe chip gets confused if we set the voltage
          * and set turn on power at the same time, so set the voltage first.
          */
-        if ((host->chip->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER))
+        if ((host->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER))
                 writeb(pwr & ~SDHCI_POWER_ON,
                                 host->ioaddr + SDHCI_POWER_CONTROL);
 
@@ -833,7 +1014,8 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
 
         host->mrq = mrq;
 
-        if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) {
+        if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)
+                || (host->flags & SDHCI_DEVICE_DEAD)) {
                 host->mrq->cmd->error = -ENOMEDIUM;
                 tasklet_schedule(&host->finish_tasklet);
         } else
@@ -853,6 +1035,9 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 
         spin_lock_irqsave(&host->lock, flags);
 
+        if (host->flags & SDHCI_DEVICE_DEAD)
+                goto out;
+
         /*
          * Reset the chip on each power off.
          * Should clear out any weird states.
@@ -888,9 +1073,10 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
          * signalling timeout and CRC errors even on CMD0. Resetting
          * it on each ios seems to solve the problem.
          */
-        if(host->chip->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS)
+        if(host->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS)
                 sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
 
+out:
         mmiowb();
         spin_unlock_irqrestore(&host->lock, flags);
 }
@@ -905,7 +1091,10 @@ static int sdhci_get_ro(struct mmc_host *mmc)
 
         spin_lock_irqsave(&host->lock, flags);
 
-        present = readl(host->ioaddr + SDHCI_PRESENT_STATE);
+        if (host->flags & SDHCI_DEVICE_DEAD)
+                present = 0;
+        else
+                present = readl(host->ioaddr + SDHCI_PRESENT_STATE);
 
         spin_unlock_irqrestore(&host->lock, flags);
 
@@ -922,6 +1111,9 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
 
         spin_lock_irqsave(&host->lock, flags);
 
+        if (host->flags & SDHCI_DEVICE_DEAD)
+                goto out;
+
         ier = readl(host->ioaddr + SDHCI_INT_ENABLE);
 
         ier &= ~SDHCI_INT_CARD_INT;
@@ -931,6 +1123,7 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
         writel(ier, host->ioaddr + SDHCI_INT_ENABLE);
         writel(ier, host->ioaddr + SDHCI_SIGNAL_ENABLE);
 
+out:
         mmiowb();
 
         spin_unlock_irqrestore(&host->lock, flags);
@@ -996,13 +1189,14 @@ static void sdhci_tasklet_finish(unsigned long param)
          * The controller needs a reset of internal state machines
          * upon error conditions.
          */
-        if (mrq->cmd->error ||
-                (mrq->data && (mrq->data->error ||
-                (mrq->data->stop && mrq->data->stop->error))) ||
-                (host->chip->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST)) {
+        if (!(host->flags & SDHCI_DEVICE_DEAD) &&
+                (mrq->cmd->error ||
+                 (mrq->data && (mrq->data->error ||
+                  (mrq->data->stop && mrq->data->stop->error))) ||
+                   (host->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST))) {
 
                 /* Some controllers need this kick or reset won't work here */
-                if (host->chip->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) {
+                if (host->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) {
                         unsigned int clock;
 
                         /* This is to force an update */
@@ -1116,6 +1310,8 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
                 host->data->error = -ETIMEDOUT;
         else if (intmask & (SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_END_BIT))
                 host->data->error = -EILSEQ;
+        else if (intmask & SDHCI_INT_ADMA_ERROR)
+                host->data->error = -EIO;
 
         if (host->data->error)
                 sdhci_finish_data(host);
@@ -1234,218 +1430,167 @@ out:
 
 #ifdef CONFIG_PM
 
-static int sdhci_suspend (struct pci_dev *pdev, pm_message_t state)
+int sdhci_suspend_host(struct sdhci_host *host, pm_message_t state)
 {
-        struct sdhci_chip *chip;
-        int i, ret;
-
-        chip = pci_get_drvdata(pdev);
-        if (!chip)
-                return 0;
-
-        DBG("Suspending...\n");
-
-        for (i = 0;i < chip->num_slots;i++) {
-                if (!chip->hosts[i])
-                        continue;
-                ret = mmc_suspend_host(chip->hosts[i]->mmc, state);
-                if (ret) {
-                        for (i--;i >= 0;i--)
-                                mmc_resume_host(chip->hosts[i]->mmc);
-                        return ret;
-                }
-        }
-
-        pci_save_state(pdev);
-        pci_enable_wake(pdev, pci_choose_state(pdev, state), 0);
+        int ret;
 
-        for (i = 0;i < chip->num_slots;i++) {
-                if (!chip->hosts[i])
-                        continue;
-                free_irq(chip->hosts[i]->irq, chip->hosts[i]);
-        }
+        ret = mmc_suspend_host(host->mmc, state);
+        if (ret)
+                return ret;
 
-        pci_disable_device(pdev);
-        pci_set_power_state(pdev, pci_choose_state(pdev, state));
+        free_irq(host->irq, host);
 
         return 0;
 }
 
-static int sdhci_resume (struct pci_dev *pdev)
-{
-        struct sdhci_chip *chip;
-        int i, ret;
+EXPORT_SYMBOL_GPL(sdhci_suspend_host);
 
-        chip = pci_get_drvdata(pdev);
-        if (!chip)
-                return 0;
+int sdhci_resume_host(struct sdhci_host *host)
+{
+        int ret;
 
-        DBG("Resuming...\n");
+        if (host->flags & SDHCI_USE_DMA) {
+                if (host->ops->enable_dma)
+                        host->ops->enable_dma(host);
+        }
 
-        pci_set_power_state(pdev, PCI_D0);
-        pci_restore_state(pdev);
-        ret = pci_enable_device(pdev);
+        ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED,
+                          mmc_hostname(host->mmc), host);
         if (ret)
                 return ret;
 
-        for (i = 0;i < chip->num_slots;i++) {
-                if (!chip->hosts[i])
-                        continue;
-                if (chip->hosts[i]->flags & SDHCI_USE_DMA)
-                        pci_set_master(pdev);
-                ret = request_irq(chip->hosts[i]->irq, sdhci_irq,
-                        IRQF_SHARED, mmc_hostname(chip->hosts[i]->mmc),
-                        chip->hosts[i]);
-                if (ret)
-                        return ret;
-                sdhci_init(chip->hosts[i]);
-                mmiowb();
-                ret = mmc_resume_host(chip->hosts[i]->mmc);
-                if (ret)
-                        return ret;
-        }
+        sdhci_init(host);
+        mmiowb();
+
+        ret = mmc_resume_host(host->mmc);
+        if (ret)
+                return ret;
 
         return 0;
 }
 
-#else /* CONFIG_PM */
-
-#define sdhci_suspend NULL
-#define sdhci_resume NULL
+EXPORT_SYMBOL_GPL(sdhci_resume_host);
 
 #endif /* CONFIG_PM */
 
 /*****************************************************************************\
  *                                                                           *
- * Device probing/removal                                                    *
+ * Device allocation/registration                                            *
  *                                                                           *
 \*****************************************************************************/
 
-static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
+struct sdhci_host *sdhci_alloc_host(struct device *dev,
+        size_t priv_size)
 {
-        int ret;
-        unsigned int version;
-        struct sdhci_chip *chip;
         struct mmc_host *mmc;
         struct sdhci_host *host;
 
-        u8 first_bar;
-        unsigned int caps;
-
-        chip = pci_get_drvdata(pdev);
-        BUG_ON(!chip);
-
-        ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
-        if (ret)
-                return ret;
-
-        first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
-
-        if (first_bar > 5) {
-                printk(KERN_ERR DRIVER_NAME ": Invalid first BAR. Aborting.\n");
-                return -ENODEV;
-        }
-
-        if (!(pci_resource_flags(pdev, first_bar + slot) & IORESOURCE_MEM)) {
-                printk(KERN_ERR DRIVER_NAME ": BAR is not iomem. Aborting.\n");
-                return -ENODEV;
-        }
-
-        if (pci_resource_len(pdev, first_bar + slot) != 0x100) {
-                printk(KERN_ERR DRIVER_NAME ": Invalid iomem size. "
-                        "You may experience problems.\n");
-        }
-
-        if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
-                printk(KERN_ERR DRIVER_NAME ": Vendor specific interface. Aborting.\n");
-                return -ENODEV;
-        }
-
-        if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) {
-                printk(KERN_ERR DRIVER_NAME ": Unknown interface. Aborting.\n");
-                return -ENODEV;
-        }
+        WARN_ON(dev == NULL);
 
-        mmc = mmc_alloc_host(sizeof(struct sdhci_host), &pdev->dev);
+        mmc = mmc_alloc_host(sizeof(struct sdhci_host) + priv_size, dev);
         if (!mmc)
-                return -ENOMEM;
+                return ERR_PTR(-ENOMEM);
 
         host = mmc_priv(mmc);
         host->mmc = mmc;
 
-        host->chip = chip;
-        chip->hosts[slot] = host;
+        return host;
+}
 
-        host->bar = first_bar + slot;
+EXPORT_SYMBOL_GPL(sdhci_alloc_host);
 
-        host->addr = pci_resource_start(pdev, host->bar);
-        host->irq = pdev->irq;
+int sdhci_add_host(struct sdhci_host *host)
+{
+        struct mmc_host *mmc;
+        unsigned int caps;
+        int ret;
 
-        DBG("slot %d at 0x%08lx, irq %d\n", slot, host->addr, host->irq);
+        WARN_ON(host == NULL);
+        if (host == NULL)
+                return -EINVAL;
 
-        ret = pci_request_region(pdev, host->bar, mmc_hostname(mmc));
-        if (ret)
-                goto free;
+        mmc = host->mmc;
 
-        host->ioaddr = ioremap_nocache(host->addr,
-                pci_resource_len(pdev, host->bar));
-        if (!host->ioaddr) {
-                ret = -ENOMEM;
-                goto release;
-        }
+        if (debug_quirks)
+                host->quirks = debug_quirks;
 
         sdhci_reset(host, SDHCI_RESET_ALL);
 
-        version = readw(host->ioaddr + SDHCI_HOST_VERSION);
-        version = (version & SDHCI_SPEC_VER_MASK) >> SDHCI_SPEC_VER_SHIFT;
-        if (version > 1) {
+        host->version = readw(host->ioaddr + SDHCI_HOST_VERSION);
+        host->version = (host->version & SDHCI_SPEC_VER_MASK)
+                                >> SDHCI_SPEC_VER_SHIFT;
+        if (host->version > SDHCI_SPEC_200) {
                 printk(KERN_ERR "%s: Unknown controller version (%d). "
                         "You may experience problems.\n", mmc_hostname(mmc),
-                        version);
+                        host->version);
         }
 
         caps = readl(host->ioaddr + SDHCI_CAPABILITIES);
 
-        if (chip->quirks & SDHCI_QUIRK_FORCE_DMA)
+        if (host->quirks & SDHCI_QUIRK_FORCE_DMA)
                 host->flags |= SDHCI_USE_DMA;
         else if (!(caps & SDHCI_CAN_DO_DMA))
                 DBG("Controller doesn't have DMA capability\n");
         else
                 host->flags |= SDHCI_USE_DMA;
 
-        if ((chip->quirks & SDHCI_QUIRK_BROKEN_DMA) &&
+        if ((host->quirks & SDHCI_QUIRK_BROKEN_DMA) &&
                 (host->flags & SDHCI_USE_DMA)) {
                 DBG("Disabling DMA as it is marked broken\n");
                 host->flags &= ~SDHCI_USE_DMA;
         }
 
-        if (((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) &&
-                (host->flags & SDHCI_USE_DMA)) {
-                printk(KERN_WARNING "%s: Will use DMA "
-                        "mode even though HW doesn't fully "
-                        "claim to support it.\n", mmc_hostname(mmc));
+        if (host->flags & SDHCI_USE_DMA) {
+                if ((host->version >= SDHCI_SPEC_200) &&
+                                (caps & SDHCI_CAN_DO_ADMA2))
+                        host->flags |= SDHCI_USE_ADMA;
+        }
+
+        if ((host->quirks & SDHCI_QUIRK_BROKEN_ADMA) &&
+                (host->flags & SDHCI_USE_ADMA)) {
+                DBG("Disabling ADMA as it is marked broken\n");
+                host->flags &= ~SDHCI_USE_ADMA;
         }
 
         if (host->flags & SDHCI_USE_DMA) {
-                if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
-                        printk(KERN_WARNING "%s: No suitable DMA available. "
-                                "Falling back to PIO.\n", mmc_hostname(mmc));
-                        host->flags &= ~SDHCI_USE_DMA;
+                if (host->ops->enable_dma) {
+                        if (host->ops->enable_dma(host)) {
+                                printk(KERN_WARNING "%s: No suitable DMA "
+                                        "available. Falling back to PIO.\n",
+                                        mmc_hostname(mmc));
+                                host->flags &= ~(SDHCI_USE_DMA | SDHCI_USE_ADMA);
+                        }
                 }
         }
 
-        if (host->flags & SDHCI_USE_DMA)
-                pci_set_master(pdev);
-        else /* XXX: Hack to get MMC layer to avoid highmem */
-                pdev->dma_mask = 0;
+        if (host->flags & SDHCI_USE_ADMA) {
+                /*
+                 * We need to allocate descriptors for all sg entries
+                 * (128) and potentially one alignment transfer for
+                 * each of those entries.
+                 */
+                host->adma_desc = kmalloc((128 * 2 + 1) * 4, GFP_KERNEL);
+                host->align_buffer = kmalloc(128 * 4, GFP_KERNEL);
+                if (!host->adma_desc || !host->align_buffer) {
+                        kfree(host->adma_desc);
+                        kfree(host->align_buffer);
+                        printk(KERN_WARNING "%s: Unable to allocate ADMA "
+                                "buffers. Falling back to standard DMA.\n",
+                                mmc_hostname(mmc));
+                        host->flags &= ~SDHCI_USE_ADMA;
+                }
+        }
+
+        /* XXX: Hack to get MMC layer to avoid highmem */
+        if (!(host->flags & SDHCI_USE_DMA))
+                mmc_dev(host->mmc)->dma_mask = NULL;
 
         host->max_clk =
                 (caps & SDHCI_CLOCK_BASE_MASK) >> SDHCI_CLOCK_BASE_SHIFT;
         if (host->max_clk == 0) {
                 printk(KERN_ERR "%s: Hardware doesn't specify base clock "
                         "frequency.\n", mmc_hostname(mmc));
-                ret = -ENODEV;
-                goto unmap;
+                return -ENODEV;
         }
         host->max_clk *= 1000000;
 
@@ -1454,8 +1599,7 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
         if (host->timeout_clk == 0) {
                 printk(KERN_ERR "%s: Hardware doesn't specify timeout clock "
                         "frequency.\n", mmc_hostname(mmc));
-                ret = -ENODEV;
-                goto unmap;
+                return -ENODEV;
         }
         if (caps & SDHCI_TIMEOUT_CLK_UNIT)
                 host->timeout_clk *= 1000;
@@ -1466,7 +1610,7 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
         mmc->ops = &sdhci_ops;
         mmc->f_min = host->max_clk / 256;
         mmc->f_max = host->max_clk;
-        mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_MULTIWRITE | MMC_CAP_SDIO_IRQ;
+        mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ;
 
         if (caps & SDHCI_CAN_DO_HISPD)
                 mmc->caps |= MMC_CAP_SD_HIGHSPEED;
@@ -1482,20 +1626,22 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
         if (mmc->ocr_avail == 0) {
                 printk(KERN_ERR "%s: Hardware doesn't report any "
                         "support voltages.\n", mmc_hostname(mmc));
-                ret = -ENODEV;
-                goto unmap;
+                return -ENODEV;
         }
 
         spin_lock_init(&host->lock);
 
         /*
-         * Maximum number of segments. Hardware cannot do scatter lists.
+         * Maximum number of segments. Depends on if the hardware
+         * can do scatter/gather or not.
          */
-        if (host->flags & SDHCI_USE_DMA)
+        if (host->flags & SDHCI_USE_ADMA)
+                mmc->max_hw_segs = 128;
+        else if (host->flags & SDHCI_USE_DMA)
                 mmc->max_hw_segs = 1;
-        else
-                mmc->max_hw_segs = 16;
-        mmc->max_phys_segs = 16;
+        else /* PIO */
+                mmc->max_hw_segs = 128;
+        mmc->max_phys_segs = 128;
 
         /*
          * Maximum number of sectors in one transfer. Limited by DMA boundary
@@ -1505,9 +1651,13 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
 
         /*
          * Maximum segment size. Could be one segment with the maximum number
-         * of bytes.
+         * of bytes. When doing hardware scatter/gather, each entry cannot
+         * be larger than 64 KiB though.
          */
-        mmc->max_seg_size = mmc->max_req_size;
+        if (host->flags & SDHCI_USE_ADMA)
+                mmc->max_seg_size = 65536;
+        else
+                mmc->max_seg_size = mmc->max_req_size;
 
         /*
          * Maximum block size. This varies from controller to controller and
@@ -1553,7 +1703,7 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
         host->led.default_trigger = mmc_hostname(mmc);
         host->led.brightness_set = sdhci_led_control;
 
-        ret = led_classdev_register(&pdev->dev, &host->led);
+        ret = led_classdev_register(mmc_dev(mmc), &host->led);
         if (ret)
                 goto reset;
 #endif
@@ -1562,8 +1712,9 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
 
         mmc_add_host(mmc);
 
-        printk(KERN_INFO "%s: SDHCI at 0x%08lx irq %d %s\n",
-                mmc_hostname(mmc), host->addr, host->irq,
+        printk(KERN_INFO "%s: SDHCI controller on %s [%s] using %s%s\n",
+                mmc_hostname(mmc), host->hw_name, mmc_dev(mmc)->bus_id,
+                (host->flags & SDHCI_USE_ADMA)?"A":"",
                 (host->flags & SDHCI_USE_DMA)?"DMA":"PIO");
 
         return 0;
@@ -1576,35 +1727,40 @@ reset:
 untasklet:
         tasklet_kill(&host->card_tasklet);
         tasklet_kill(&host->finish_tasklet);
-unmap:
-        iounmap(host->ioaddr);
-release:
-        pci_release_region(pdev, host->bar);
-free:
-        mmc_free_host(mmc);
 
         return ret;
 }
 
-static void sdhci_remove_slot(struct pci_dev *pdev, int slot)
+EXPORT_SYMBOL_GPL(sdhci_add_host);
+
+void sdhci_remove_host(struct sdhci_host *host, int dead)
 {
-        struct sdhci_chip *chip;
-        struct mmc_host *mmc;
-        struct sdhci_host *host;
+        unsigned long flags;
 
-        chip = pci_get_drvdata(pdev);
-        host = chip->hosts[slot];
-        mmc = host->mmc;
+        if (dead) {
+                spin_lock_irqsave(&host->lock, flags);
+
+                host->flags |= SDHCI_DEVICE_DEAD;
+
+                if (host->mrq) {
+                        printk(KERN_ERR "%s: Controller removed during "
+                                " transfer!\n", mmc_hostname(host->mmc));
 
-        chip->hosts[slot] = NULL;
+                        host->mrq->cmd->error = -ENOMEDIUM;
+                        tasklet_schedule(&host->finish_tasklet);
+                }
+
+                spin_unlock_irqrestore(&host->lock, flags);
+        }
 
-        mmc_remove_host(mmc);
+        mmc_remove_host(host->mmc);
 
 #ifdef CONFIG_LEDS_CLASS
         led_classdev_unregister(&host->led);
 #endif
 
-        sdhci_reset(host, SDHCI_RESET_ALL);
+        if (!dead)
+                sdhci_reset(host, SDHCI_RESET_ALL);
 
         free_irq(host->irq, host);
 
@@ -1613,106 +1769,21 @@ static void sdhci_remove_slot(struct pci_dev *pdev, int slot)
         tasklet_kill(&host->card_tasklet);
         tasklet_kill(&host->finish_tasklet);
 
-        iounmap(host->ioaddr);
-
-        pci_release_region(pdev, host->bar);
+        kfree(host->adma_desc);
+        kfree(host->align_buffer);
 
-        mmc_free_host(mmc);
+        host->adma_desc = NULL;
+        host->align_buffer = NULL;
 }
 
-static int __devinit sdhci_probe(struct pci_dev *pdev,
-        const struct pci_device_id *ent)
-{
-        int ret, i;
-        u8 slots, rev;
-        struct sdhci_chip *chip;
-
-        BUG_ON(pdev == NULL);
-        BUG_ON(ent == NULL);
+EXPORT_SYMBOL_GPL(sdhci_remove_host);
 
-        pci_read_config_byte(pdev, PCI_CLASS_REVISION, &rev);
-
-        printk(KERN_INFO DRIVER_NAME
-                ": SDHCI controller found at %s [%04x:%04x] (rev %x)\n",
-                pci_name(pdev), (int)pdev->vendor, (int)pdev->device,
-                (int)rev);
-
-        ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
-        if (ret)
-                return ret;
-
-        slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
-        DBG("found %d slot(s)\n", slots);
-        if (slots == 0)
-                return -ENODEV;
-
-        ret = pci_enable_device(pdev);
-        if (ret)
-                return ret;
-
-        chip = kzalloc(sizeof(struct sdhci_chip) +
-                sizeof(struct sdhci_host*) * slots, GFP_KERNEL);
-        if (!chip) {
-                ret = -ENOMEM;
-                goto err;
-        }
-
-        chip->pdev = pdev;
-        chip->quirks = ent->driver_data;
-
-        if (debug_quirks)
-                chip->quirks = debug_quirks;
-
-        chip->num_slots = slots;
-        pci_set_drvdata(pdev, chip);
-
-        for (i = 0;i < slots;i++) {
-                ret = sdhci_probe_slot(pdev, i);
-                if (ret) {
-                        for (i--;i >= 0;i--)
-                                sdhci_remove_slot(pdev, i);
-                        goto free;
-                }
-        }
-
-        return 0;
-
-free:
-        pci_set_drvdata(pdev, NULL);
-        kfree(chip);
-
-err:
-        pci_disable_device(pdev);
-        return ret;
-}
-
-static void __devexit sdhci_remove(struct pci_dev *pdev)
+void sdhci_free_host(struct sdhci_host *host)
 {
-        int i;
-        struct sdhci_chip *chip;
-
-        chip = pci_get_drvdata(pdev);
-
-        if (chip) {
-                for (i = 0;i < chip->num_slots;i++)
-                        sdhci_remove_slot(pdev, i);
-
-                pci_set_drvdata(pdev, NULL);
-
-                kfree(chip);
-        }
-
-        pci_disable_device(pdev);
+        mmc_free_host(host->mmc);
 }
 
-static struct pci_driver sdhci_driver = {
-        .name =         DRIVER_NAME,
-        .id_table =     pci_ids,
-        .probe =        sdhci_probe,
-        .remove =       __devexit_p(sdhci_remove),
-        .suspend =      sdhci_suspend,
-        .resume =       sdhci_resume,
-};
+EXPORT_SYMBOL_GPL(sdhci_free_host);
 
 /*****************************************************************************\
  *                                                                           *
@@ -1726,14 +1797,11 @@ static int __init sdhci_drv_init(void)
                 ": Secure Digital Host Controller Interface driver\n");
         printk(KERN_INFO DRIVER_NAME ": Copyright(c) Pierre Ossman\n");
 
-        return pci_register_driver(&sdhci_driver);
+        return 0;
 }
 
 static void __exit sdhci_drv_exit(void)
 {
-        DBG("Exiting\n");
-
-        pci_unregister_driver(&sdhci_driver);
 }
 
 module_init(sdhci_drv_init);
@@ -1742,7 +1810,7 @@ module_exit(sdhci_drv_exit);
 module_param(debug_quirks, uint, 0444);
 
 MODULE_AUTHOR("Pierre Ossman <drzeus@drzeus.cx>");
-MODULE_DESCRIPTION("Secure Digital Host Controller Interface driver");
+MODULE_DESCRIPTION("Secure Digital Host Controller Interface core driver");
 MODULE_LICENSE("GPL");
 
 MODULE_PARM_DESC(debug_quirks, "Force certain quirks.");
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 299118de8933..5bb355281765 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -10,18 +10,6 @@
  */
 
 /*
- * PCI registers
- */
-
-#define PCI_SDHCI_IFPIO                 0x00
-#define PCI_SDHCI_IFDMA                 0x01
-#define PCI_SDHCI_IFVENDOR              0x02
-
-#define PCI_SLOT_INFO                   0x40    /* 8 bits */
-#define  PCI_SLOT_INFO_SLOTS(x)         ((x >> 4) & 7)
-#define  PCI_SLOT_INFO_FIRST_BAR_MASK   0x07
-
-/*
  * Controller registers
  */
 
@@ -72,6 +60,11 @@
 #define  SDHCI_CTRL_LED         0x01
 #define  SDHCI_CTRL_4BITBUS     0x02
 #define  SDHCI_CTRL_HISPD       0x04
+#define  SDHCI_CTRL_DMA_MASK    0x18
+#define   SDHCI_CTRL_SDMA       0x00
+#define   SDHCI_CTRL_ADMA1      0x08
+#define   SDHCI_CTRL_ADMA32     0x10
+#define   SDHCI_CTRL_ADMA64     0x18
 
 #define SDHCI_POWER_CONTROL     0x29
 #define  SDHCI_POWER_ON         0x01
@@ -117,6 +110,7 @@
 #define  SDHCI_INT_DATA_END_BIT 0x00400000
 #define  SDHCI_INT_BUS_POWER    0x00800000
 #define  SDHCI_INT_ACMD12ERR    0x01000000
+#define  SDHCI_INT_ADMA_ERROR   0x02000000
 
 #define  SDHCI_INT_NORMAL_MASK  0x00007FFF
 #define  SDHCI_INT_ERROR_MASK   0xFFFF8000
@@ -140,11 +134,14 @@
 #define  SDHCI_CLOCK_BASE_SHIFT 8
 #define  SDHCI_MAX_BLOCK_MASK   0x00030000
 #define  SDHCI_MAX_BLOCK_SHIFT  16
+#define  SDHCI_CAN_DO_ADMA2     0x00080000
+#define  SDHCI_CAN_DO_ADMA1     0x00100000
 #define  SDHCI_CAN_DO_HISPD     0x00200000
 #define  SDHCI_CAN_DO_DMA       0x00400000
 #define  SDHCI_CAN_VDD_330      0x01000000
 #define  SDHCI_CAN_VDD_300      0x02000000
 #define  SDHCI_CAN_VDD_180      0x04000000
+#define  SDHCI_CAN_64BIT        0x10000000
 
 /* 44-47 reserved for more caps */
 
@@ -152,7 +149,16 @@
 
 /* 4C-4F reserved for more max current */
 
-/* 50-FB reserved */
+#define SDHCI_SET_ACMD12_ERROR  0x50
+#define SDHCI_SET_INT_ERROR     0x52
+
+#define SDHCI_ADMA_ERROR        0x54
+
+/* 55-57 reserved */
+
+#define SDHCI_ADMA_ADDRESS      0x58
+
+/* 60-FB reserved */
 
 #define SDHCI_SLOT_INT_STATUS   0xFC
 
@@ -161,11 +167,50 @@
 #define  SDHCI_VENDOR_VER_SHIFT 8
 #define  SDHCI_SPEC_VER_MASK    0x00FF
 #define  SDHCI_SPEC_VER_SHIFT   0
+#define   SDHCI_SPEC_100        0
+#define   SDHCI_SPEC_200        1
 
-struct sdhci_chip;
+struct sdhci_ops;
 
 struct sdhci_host {
-        struct sdhci_chip       *chip;
+        /* Data set by hardware interface driver */
+        const char              *hw_name;       /* Hardware bus name */
+
+        unsigned int            quirks;         /* Deviations from spec. */
+
+/* Controller doesn't honor resets unless we touch the clock register */
+#define SDHCI_QUIRK_CLOCK_BEFORE_RESET                  (1<<0)
+/* Controller has bad caps bits, but really supports DMA */
+#define SDHCI_QUIRK_FORCE_DMA                           (1<<1)
+/* Controller doesn't like to be reset when there is no card inserted. */
+#define SDHCI_QUIRK_NO_CARD_NO_RESET                    (1<<2)
+/* Controller doesn't like clearing the power reg before a change */
+#define SDHCI_QUIRK_SINGLE_POWER_WRITE                  (1<<3)
+/* Controller has flaky internal state so reset it on each ios change */
+#define SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS               (1<<4)
+/* Controller has an unusable DMA engine */
+#define SDHCI_QUIRK_BROKEN_DMA                          (1<<5)
+/* Controller has an unusable ADMA engine */
+#define SDHCI_QUIRK_BROKEN_ADMA                         (1<<6)
+/* Controller can only DMA from 32-bit aligned addresses */
+#define SDHCI_QUIRK_32BIT_DMA_ADDR                      (1<<7)
+/* Controller can only DMA chunk sizes that are a multiple of 32 bits */
+#define SDHCI_QUIRK_32BIT_DMA_SIZE                      (1<<8)
+/* Controller can only ADMA chunks that are a multiple of 32 bits */
+#define SDHCI_QUIRK_32BIT_ADMA_SIZE                     (1<<9)
+/* Controller needs to be reset after each request to stay stable */
+#define SDHCI_QUIRK_RESET_AFTER_REQUEST                 (1<<10)
+/* Controller needs voltage and power writes to happen separately */
+#define SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER             (1<<11)
+/* Controller provides an incorrect timeout value for transfers */
+#define SDHCI_QUIRK_BROKEN_TIMEOUT_VAL                  (1<<12)
+
+        int                     irq;            /* Device IRQ */
+        void __iomem *          ioaddr;         /* Mapped address */
+
+        const struct sdhci_ops  *ops;           /* Low level hw interface */
+
+        /* Internal data */
         struct mmc_host         *mmc;           /* MMC structure */
 
 #ifdef CONFIG_LEDS_CLASS
@@ -176,7 +221,11 @@ struct sdhci_host {
 
         int                     flags;          /* Host attributes */
 #define SDHCI_USE_DMA           (1<<0)          /* Host is DMA capable */
-#define SDHCI_REQ_USE_DMA       (1<<1)          /* Use DMA for this req. */
+#define SDHCI_USE_ADMA          (1<<1)          /* Host is ADMA capable */
+#define SDHCI_REQ_USE_DMA       (1<<2)          /* Use DMA for this req. */
+#define SDHCI_DEVICE_DEAD       (1<<3)          /* Device unresponsive */
+
+        unsigned int            version;        /* SDHCI spec. version */
 
         unsigned int            max_clk;        /* Max possible freq (MHz) */
         unsigned int            timeout_clk;    /* Timeout freq (KHz) */
@@ -194,22 +243,41 @@ struct sdhci_host {
         int                     offset;         /* Offset into current sg */
         int                     remain;         /* Bytes left in current */
 
-        int                     irq;            /* Device IRQ */
-        int                     bar;            /* PCI BAR index */
-        unsigned long           addr;           /* Bus address */
-        void __iomem *          ioaddr;         /* Mapped address */
+        int                     sg_count;       /* Mapped sg entries */
+
+        u8                      *adma_desc;     /* ADMA descriptor table */
+        u8                      *align_buffer;  /* Bounce buffer */
+
+        dma_addr_t              adma_addr;      /* Mapped ADMA descr. table */
+        dma_addr_t              align_addr;     /* Mapped bounce buffer */
 
         struct tasklet_struct   card_tasklet;   /* Tasklet structures */
         struct tasklet_struct   finish_tasklet;
 
         struct timer_list       timer;          /* Timer for timeouts */
-};
 
-struct sdhci_chip {
-        struct pci_dev          *pdev;
+        unsigned long           private[0] ____cacheline_aligned;
+};
 
-        unsigned long           quirks;
 
-        int                     num_slots;      /* Slots on controller */
-        struct sdhci_host       *hosts[0];      /* Pointers to hosts */
+struct sdhci_ops {
+        int             (*enable_dma)(struct sdhci_host *host);
 };
+
+
+extern struct sdhci_host *sdhci_alloc_host(struct device *dev,
+        size_t priv_size);
+extern void sdhci_free_host(struct sdhci_host *host);
+
+static inline void *sdhci_priv(struct sdhci_host *host)
+{
+        return (void *)host->private;
+}
+
+extern int sdhci_add_host(struct sdhci_host *host);
+extern void sdhci_remove_host(struct sdhci_host *host, int dead);
+
+#ifdef CONFIG_PM
+extern int sdhci_suspend_host(struct sdhci_host *host, pm_message_t state);
+extern int sdhci_resume_host(struct sdhci_host *host);
+#endif
diff --git a/drivers/mmc/host/sdricoh_cs.c b/drivers/mmc/host/sdricoh_cs.c
new file mode 100644
index 000000000000..f99e9f721629
--- /dev/null
+++ b/drivers/mmc/host/sdricoh_cs.c
@@ -0,0 +1,575 @@
+/*
+ *  sdricoh_cs.c - driver for Ricoh Secure Digital Card Readers that can be
+ *     found on some Ricoh RL5c476 II cardbus bridge
+ *
+ *  Copyright (C) 2006 - 2008 Sascha Sommer <saschasommer@freenet.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+/*
+#define DEBUG
+#define VERBOSE_DEBUG
+*/
+#include <linux/delay.h>
+#include <linux/highmem.h>
+#include <linux/pci.h>
+#include <linux/ioport.h>
+#include <linux/scatterlist.h>
+#include <linux/version.h>
+
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+#include <linux/io.h>
+
+#include <linux/mmc/host.h>
+
+#define DRIVER_NAME "sdricoh_cs"
+
+static unsigned int switchlocked;
+
+/* i/o region */
+#define SDRICOH_PCI_REGION 0
+#define SDRICOH_PCI_REGION_SIZE 0x1000
+
+/* registers */
+#define R104_VERSION     0x104
+#define R200_CMD         0x200
+#define R204_CMD_ARG     0x204
+#define R208_DATAIO      0x208
+#define R20C_RESP        0x20c
+#define R21C_STATUS      0x21c
+#define R2E0_INIT        0x2e0
+#define R2E4_STATUS_RESP 0x2e4
+#define R2F0_RESET       0x2f0
+#define R224_MODE        0x224
+#define R226_BLOCKSIZE   0x226
+#define R228_POWER       0x228
+#define R230_DATA        0x230
+
+/* flags for the R21C_STATUS register */
+#define STATUS_CMD_FINISHED      0x00000001
+#define STATUS_TRANSFER_FINISHED 0x00000004
+#define STATUS_CARD_INSERTED     0x00000020
+#define STATUS_CARD_LOCKED       0x00000080
+#define STATUS_CMD_TIMEOUT       0x00400000
+#define STATUS_READY_TO_READ     0x01000000
+#define STATUS_READY_TO_WRITE    0x02000000
+#define STATUS_BUSY              0x40000000
+
+/* timeouts */
+#define INIT_TIMEOUT      100
+#define CMD_TIMEOUT       100000
+#define TRANSFER_TIMEOUT  100000
+#define BUSY_TIMEOUT      32767
+
+/* list of supported pcmcia devices */
+static struct pcmcia_device_id pcmcia_ids[] = {
+        /* vendor and device strings followed by their crc32 hashes */
+        PCMCIA_DEVICE_PROD_ID12("RICOH", "Bay1Controller", 0xd9f522ed,
+                                0xc3901202),
+        PCMCIA_DEVICE_NULL,
+};
+
+MODULE_DEVICE_TABLE(pcmcia, pcmcia_ids);
+
+/* mmc privdata */
+struct sdricoh_host {
+        struct device *dev;
+        struct mmc_host *mmc;   /* MMC structure */
+        unsigned char __iomem *iobase;
+        struct pci_dev *pci_dev;
+        int app_cmd;
+};
+
+/***************** register i/o helper functions *****************************/
+
+static inline unsigned int sdricoh_readl(struct sdricoh_host *host,
+                                         unsigned int reg)
+{
+        unsigned int value = readl(host->iobase + reg);
+        dev_vdbg(host->dev, "rl %x 0x%x\n", reg, value);
+        return value;
+}
+
+static inline void sdricoh_writel(struct sdricoh_host *host, unsigned int reg,
+                                  unsigned int value)
+{
+        writel(value, host->iobase + reg);
+        dev_vdbg(host->dev, "wl %x 0x%x\n", reg, value);
+
+}
+
+static inline unsigned int sdricoh_readw(struct sdricoh_host *host,
+                                         unsigned int reg)
+{
+        unsigned int value = readw(host->iobase + reg);
+        dev_vdbg(host->dev, "rb %x 0x%x\n", reg, value);
+        return value;
+}
+
+static inline void sdricoh_writew(struct sdricoh_host *host, unsigned int reg,
+                                         unsigned short value)
+{
+        writew(value, host->iobase + reg);
+        dev_vdbg(host->dev, "ww %x 0x%x\n", reg, value);
+}
+
+static inline unsigned int sdricoh_readb(struct sdricoh_host *host,
+                                         unsigned int reg)
+{
+        unsigned int value = readb(host->iobase + reg);
+        dev_vdbg(host->dev, "rb %x 0x%x\n", reg, value);
+        return value;
+}
+
+static int sdricoh_query_status(struct sdricoh_host *host, unsigned int wanted,
+                                unsigned int timeout){
+        unsigned int loop;
+        unsigned int status = 0;
+        struct device *dev = host->dev;
+        for (loop = 0; loop < timeout; loop++) {
+                status = sdricoh_readl(host, R21C_STATUS);
+                sdricoh_writel(host, R2E4_STATUS_RESP, status);
+                if (status & wanted)
+                        break;
+        }
+
+        if (loop == timeout) {
+                dev_err(dev, "query_status: timeout waiting for %x\n", wanted);
+                return -ETIMEDOUT;
+        }
+
+        /* do not do this check in the loop as some commands fail otherwise */
+        if (status & 0x7F0000) {
+                dev_err(dev, "waiting for status bit %x failed\n", wanted);
+                return -EINVAL;
+        }
+        return 0;
+
+}
+
+static int sdricoh_mmc_cmd(struct sdricoh_host *host, unsigned char opcode,
+                           unsigned int arg)
+{
+        unsigned int status;
+        int result = 0;
+        unsigned int loop = 0;
+        /* reset status reg? */
+        sdricoh_writel(host, R21C_STATUS, 0x18);
+        /* fill parameters */
+        sdricoh_writel(host, R204_CMD_ARG, arg);
+        sdricoh_writel(host, R200_CMD, (0x10000 << 8) | opcode);
+        /* wait for command completion */
+        if (opcode) {
+                for (loop = 0; loop < CMD_TIMEOUT; loop++) {
+                        status = sdricoh_readl(host, R21C_STATUS);
+                        sdricoh_writel(host, R2E4_STATUS_RESP, status);
+                        if (status  & STATUS_CMD_FINISHED)
+                                break;
+                }
+                /* don't check for timeout in the loop it is not always
+                   reset correctly
+                */
+                if (loop == CMD_TIMEOUT || status & STATUS_CMD_TIMEOUT)
+                        result = -ETIMEDOUT;
+
+        }
+
+        return result;
+
+}
+
+static int sdricoh_reset(struct sdricoh_host *host)
+{
+        dev_dbg(host->dev, "reset\n");
+        sdricoh_writel(host, R2F0_RESET, 0x10001);
+        sdricoh_writel(host, R2E0_INIT, 0x10000);
+        if (sdricoh_readl(host, R2E0_INIT) != 0x10000)
+                return -EIO;
+        sdricoh_writel(host, R2E0_INIT, 0x10007);
+
+        sdricoh_writel(host, R224_MODE, 0x2000000);
+        sdricoh_writel(host, R228_POWER, 0xe0);
+
+
+        /* status register ? */
+        sdricoh_writel(host, R21C_STATUS, 0x18);
+
+        return 0;
+}
+
+static int sdricoh_blockio(struct sdricoh_host *host, int read,
+                                u8 *buf, int len)
+{
+        int size;
+        u32 data = 0;
+        /* wait until the data is available */
+        if (read) {
+                if (sdricoh_query_status(host, STATUS_READY_TO_READ,
+                                                TRANSFER_TIMEOUT))
+                        return -ETIMEDOUT;
+                sdricoh_writel(host, R21C_STATUS, 0x18);
+                /* read data */
+                while (len) {
+                        data = sdricoh_readl(host, R230_DATA);
+                        size = min(len, 4);
+                        len -= size;
+                        while (size) {
+                                *buf = data & 0xFF;
+                                buf++;
+                                data >>= 8;
+                                size--;
+                        }
+                }
+        } else {
+                if (sdricoh_query_status(host, STATUS_READY_TO_WRITE,
+                                                TRANSFER_TIMEOUT))
+                        return -ETIMEDOUT;
+                sdricoh_writel(host, R21C_STATUS, 0x18);
+                /* write data */
+                while (len) {
+                        size = min(len, 4);
+                        len -= size;
+                        while (size) {
+                                data >>= 8;
+                                data |= (u32)*buf << 24;
+                                buf++;
+                                size--;
+                        }
+                        sdricoh_writel(host, R230_DATA, data);
+                }
+        }
+
+        if (len)
+                return -EIO;
+
+        return 0;
+}
+
+static void sdricoh_request(struct mmc_host *mmc, struct mmc_request *mrq)
+{
+        struct sdricoh_host *host = mmc_priv(mmc);
+        struct mmc_command *cmd = mrq->cmd;
+        struct mmc_data *data = cmd->data;
+        struct device *dev = host->dev;
+        unsigned char opcode = cmd->opcode;
+        int i;
+
+        dev_dbg(dev, "=============================\n");
+        dev_dbg(dev, "sdricoh_request opcode=%i\n", opcode);
+
+        sdricoh_writel(host, R21C_STATUS, 0x18);
+
+        /* MMC_APP_CMDs need some special handling */
+        if (host->app_cmd) {
+                opcode |= 64;
+                host->app_cmd = 0;
+        } else if (opcode == 55)
+                host->app_cmd = 1;
+
+        /* read/write commands seem to require this */
+        if (data) {
+                sdricoh_writew(host, R226_BLOCKSIZE, data->blksz);
+                sdricoh_writel(host, R208_DATAIO, 0);
+        }
+
+        cmd->error = sdricoh_mmc_cmd(host, opcode, cmd->arg);
+
+        /* read response buffer */
+        if (cmd->flags & MMC_RSP_PRESENT) {
+                if (cmd->flags & MMC_RSP_136) {
+                        /* CRC is stripped so we need to do some shifting. */
+                        for (i = 0; i < 4; i++) {
+                                cmd->resp[i] =
+                                    sdricoh_readl(host,
+                                                  R20C_RESP + (3 - i) * 4) << 8;
+                                if (i != 3)
+                                        cmd->resp[i] |=
+                                            sdricoh_readb(host, R20C_RESP +
+                                                          (3 - i) * 4 - 1);
+                        }
+                } else
+                        cmd->resp[0] = sdricoh_readl(host, R20C_RESP);
+        }
+
+        /* transfer data */
+        if (data && cmd->error == 0) {
+                dev_dbg(dev, "transfer: blksz %i blocks %i sg_len %i "
+                        "sg length %i\n", data->blksz, data->blocks,
+                        data->sg_len, data->sg->length);
+
+                /* enter data reading mode */
+                sdricoh_writel(host, R21C_STATUS, 0x837f031e);
+                for (i = 0; i < data->blocks; i++) {
+                        size_t len = data->blksz;
+                        u8 *buf;
+                        struct page *page;
+                        int result;
+                        page = sg_page(data->sg);
+
+                        buf = kmap(page) + data->sg->offset + (len * i);
+                        result =
+                                sdricoh_blockio(host,
+                                        data->flags & MMC_DATA_READ, buf, len);
+                        kunmap(page);
+                        flush_dcache_page(page);
+                        if (result) {
+                                dev_err(dev, "sdricoh_request: cmd %i "
+                                        "block transfer failed\n", cmd->opcode);
+                                cmd->error = result;
+                                break;
+                        } else
+                                data->bytes_xfered += len;
+                }
+
+                sdricoh_writel(host, R208_DATAIO, 1);
+
+                if (sdricoh_query_status(host, STATUS_TRANSFER_FINISHED,
+                                        TRANSFER_TIMEOUT)) {
+                        dev_err(dev, "sdricoh_request: transfer end error\n");
+                        cmd->error = -EINVAL;
+                }
+        }
+        /* FIXME check busy flag */
+
+        mmc_request_done(mmc, mrq);
+        dev_dbg(dev, "=============================\n");
+}
+
+static void sdricoh_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+        struct sdricoh_host *host = mmc_priv(mmc);
+        dev_dbg(host->dev, "set_ios\n");
+
+        if (ios->power_mode == MMC_POWER_ON) {
+                sdricoh_writel(host, R228_POWER, 0xc0e0);
+
+                if (ios->bus_width == MMC_BUS_WIDTH_4) {
+                        sdricoh_writel(host, R224_MODE, 0x2000300);
+                        sdricoh_writel(host, R228_POWER, 0x40e0);
+                } else {
+                        sdricoh_writel(host, R224_MODE, 0x2000340);
+                }
+
+        } else if (ios->power_mode == MMC_POWER_UP) {
+                sdricoh_writel(host, R224_MODE, 0x2000320);
+                sdricoh_writel(host, R228_POWER, 0xe0);
+        }
+}
+
+static int sdricoh_get_ro(struct mmc_host *mmc)
+{
+        struct sdricoh_host *host = mmc_priv(mmc);
+        unsigned int status;
+
+        status = sdricoh_readl(host, R21C_STATUS);
+        sdricoh_writel(host, R2E4_STATUS_RESP, status);
+
+        /* some notebooks seem to have the locked flag switched */
+        if (switchlocked)
+                return !(status & STATUS_CARD_LOCKED);
+
+        return (status & STATUS_CARD_LOCKED);
+}
+
+static struct mmc_host_ops sdricoh_ops = {
+        .request = sdricoh_request,
+        .set_ios = sdricoh_set_ios,
+        .get_ro = sdricoh_get_ro,
+};
+
+/* initialize the control and register it to the mmc framework */
+static int sdricoh_init_mmc(struct pci_dev *pci_dev,
+                            struct pcmcia_device *pcmcia_dev)
+{
+        int result = 0;
+        void __iomem *iobase = NULL;
+        struct mmc_host *mmc = NULL;
+        struct sdricoh_host *host = NULL;
+        struct device *dev = &pcmcia_dev->dev;
+        /* map iomem */
+        if (pci_resource_len(pci_dev, SDRICOH_PCI_REGION) !=
+            SDRICOH_PCI_REGION_SIZE) {
+                dev_dbg(dev, "unexpected pci resource len\n");
+                return -ENODEV;
+        }
+        iobase =
+            pci_iomap(pci_dev, SDRICOH_PCI_REGION, SDRICOH_PCI_REGION_SIZE);
+        if (!iobase) {
+                dev_err(dev, "unable to map iobase\n");
+                return -ENODEV;
+        }
+        /* check version? */
+        if (readl(iobase + R104_VERSION) != 0x4000) {
+                dev_dbg(dev, "no supported mmc controller found\n");
+                result = -ENODEV;
+                goto err;
+        }
+        /* allocate privdata */
+        mmc = pcmcia_dev->priv =
+            mmc_alloc_host(sizeof(struct sdricoh_host), &pcmcia_dev->dev);
+        if (!mmc) {
+                dev_err(dev, "mmc_alloc_host failed\n");
+                result = -ENOMEM;
+                goto err;
+        }
+        host = mmc_priv(mmc);
+
+        host->iobase = iobase;
+        host->dev = dev;
+        host->pci_dev = pci_dev;
+
+        mmc->ops = &sdricoh_ops;
+
+        /* FIXME: frequency and voltage handling is done by the controller
+         */
+        mmc->f_min = 450000;
+        mmc->f_max = 24000000;
+        mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
+        mmc->caps |= MMC_CAP_4_BIT_DATA;
+
+        mmc->max_seg_size = 1024 * 512;
+        mmc->max_blk_size = 512;
+
+        /* reset the controler */
+        if (sdricoh_reset(host)) {
+                dev_dbg(dev, "could not reset\n");
+                result = -EIO;
+                goto err;
+
+        }
+
+        result = mmc_add_host(mmc);
+
+        if (!result) {
+                dev_dbg(dev, "mmc host registered\n");
+                return 0;
+        }
+
+err:
+        if (iobase)
+                iounmap(iobase);
+        if (mmc)
+                mmc_free_host(mmc);
+
+        return result;
+}
+
+/* search for supported mmc controllers */
+static int sdricoh_pcmcia_probe(struct pcmcia_device *pcmcia_dev)
+{
+        struct pci_dev *pci_dev = NULL;
+
+        dev_info(&pcmcia_dev->dev, "Searching MMC controller for pcmcia device"
+                " %s %s ...\n", pcmcia_dev->prod_id[0], pcmcia_dev->prod_id[1]);
+
+        /* search pci cardbus bridge that contains the mmc controler */
+        /* the io region is already claimed by yenta_socket... */
+        while ((pci_dev =
+                pci_get_device(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476,
+                               pci_dev))) {
+                /* try to init the device */
+                if (!sdricoh_init_mmc(pci_dev, pcmcia_dev)) {
+                        dev_info(&pcmcia_dev->dev, "MMC controller found\n");
+                        return 0;
+                }
+
+        }
+        dev_err(&pcmcia_dev->dev, "No MMC controller was found.\n");
+        return -ENODEV;
+}
+
+static void sdricoh_pcmcia_detach(struct pcmcia_device *link)
+{
+        struct mmc_host *mmc = link->priv;
+
+        dev_dbg(&link->dev, "detach\n");
+
+        /* remove mmc host */
+        if (mmc) {
+                struct sdricoh_host *host = mmc_priv(mmc);
+                mmc_remove_host(mmc);
+                pci_iounmap(host->pci_dev, host->iobase);
+                pci_dev_put(host->pci_dev);
+                mmc_free_host(mmc);
+        }
+        pcmcia_disable_device(link);
+
+}
+
+#ifdef CONFIG_PM
+static int sdricoh_pcmcia_suspend(struct pcmcia_device *link)
+{
+        struct mmc_host *mmc = link->priv;
+        dev_dbg(&link->dev, "suspend\n");
+        mmc_suspend_host(mmc, PMSG_SUSPEND);
+        return 0;
+}
+
+static int sdricoh_pcmcia_resume(struct pcmcia_device *link)
+{
+        struct mmc_host *mmc = link->priv;
+        dev_dbg(&link->dev, "resume\n");
+        sdricoh_reset(mmc_priv(mmc));
+        mmc_resume_host(mmc);
+        return 0;
+}
+#else
+#define sdricoh_pcmcia_suspend NULL
+#define sdricoh_pcmcia_resume NULL
+#endif
+
+static struct pcmcia_driver sdricoh_driver = {
+        .drv = {
+                .name = DRIVER_NAME,
+                },
+        .probe = sdricoh_pcmcia_probe,
+        .remove = sdricoh_pcmcia_detach,
+        .id_table = pcmcia_ids,
+        .suspend = sdricoh_pcmcia_suspend,
+        .resume = sdricoh_pcmcia_resume,
+};
+
+/*****************************************************************************\
+ *                                                                           *
+ * Driver init/exit                                                          *
+ *                                                                           *
+\*****************************************************************************/
+
+static int __init sdricoh_drv_init(void)
+{
+        return pcmcia_register_driver(&sdricoh_driver);
+}
+
+static void __exit sdricoh_drv_exit(void)
+{
+        pcmcia_unregister_driver(&sdricoh_driver);
+}
+
+module_init(sdricoh_drv_init);
+module_exit(sdricoh_drv_exit);
+
+module_param(switchlocked, uint, 0444);
+
+MODULE_AUTHOR("Sascha Sommer <saschasommer@freenet.de>");
+MODULE_DESCRIPTION("Ricoh PCMCIA Secure Digital Interface driver");
+MODULE_LICENSE("GPL");
+
+MODULE_PARM_DESC(switchlocked, "Switch the cards locked status."
+                "Use this when unlocked cards are shown readonly (default 0)");
diff --git a/drivers/mmc/host/tifm_sd.c b/drivers/mmc/host/tifm_sd.c
index 1c14a186f000..13844843e8de 100644
--- a/drivers/mmc/host/tifm_sd.c
+++ b/drivers/mmc/host/tifm_sd.c
@@ -973,7 +973,7 @@ static int tifm_sd_probe(struct tifm_dev *sock)
 
         mmc->ops = &tifm_sd_ops;
         mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
-        mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_MULTIWRITE;
+        mmc->caps = MMC_CAP_4_BIT_DATA;
         mmc->f_min = 20000000 / 60;
         mmc->f_max = 24000000;
 
diff --git a/drivers/mmc/host/wbsd.c b/drivers/mmc/host/wbsd.c
index c303e7f57ab4..adda37952032 100644
--- a/drivers/mmc/host/wbsd.c
+++ b/drivers/mmc/host/wbsd.c
@@ -68,16 +68,16 @@ static const int unlock_codes[] = { 0x83, 0x87 };
 
 static const int valid_ids[] = {
         0x7112,
-        };
+};
 
 #ifdef CONFIG_PNP
-static unsigned int nopnp = 0;
+static unsigned int param_nopnp = 0;
 #else
-static const unsigned int nopnp = 1;
+static const unsigned int param_nopnp = 1;
 #endif
-static unsigned int io = 0x248;
-static unsigned int irq = 6;
-static int dma = 2;
+static unsigned int param_io = 0x248;
+static unsigned int param_irq = 6;
+static int param_dma = 2;
 
 /*
  * Basic functions
@@ -939,7 +939,7 @@ static int wbsd_get_ro(struct mmc_host *mmc)
 
         spin_unlock_bh(&host->lock);
 
-        return csr & WBSD_WRPT;
+        return !!(csr & WBSD_WRPT);
 }
 
 static const struct mmc_host_ops wbsd_ops = {
@@ -1219,7 +1219,7 @@ static int __devinit wbsd_alloc_mmc(struct device *dev)
         mmc->f_min = 375000;
         mmc->f_max = 24000000;
         mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
-        mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_MULTIWRITE;
+        mmc->caps = MMC_CAP_4_BIT_DATA;
 
         spin_lock_init(&host->lock);
 
@@ -1420,7 +1420,7 @@ kfree:
 
         dma_unmap_single(mmc_dev(host->mmc), host->dma_addr,
                 WBSD_DMA_SIZE, DMA_BIDIRECTIONAL);
-        host->dma_addr = (dma_addr_t)NULL;
+        host->dma_addr = 0;
 
         kfree(host->dma_buffer);
         host->dma_buffer = NULL;
@@ -1445,7 +1445,7 @@ static void wbsd_release_dma(struct wbsd_host *host)
 
         host->dma = -1;
         host->dma_buffer = NULL;
-        host->dma_addr = (dma_addr_t)NULL;
+        host->dma_addr = 0;
 }
 
 /*
@@ -1765,7 +1765,7 @@ static void __devexit wbsd_shutdown(struct device *dev, int pnp)
 static int __devinit wbsd_probe(struct platform_device *dev)
 {
         /* Use the module parameters for resources */
-        return wbsd_init(&dev->dev, io, irq, dma, 0);
+        return wbsd_init(&dev->dev, param_io, param_irq, param_dma, 0);
 }
 
 static int __devexit wbsd_remove(struct platform_device *dev)
@@ -1979,14 +1979,14 @@ static int __init wbsd_drv_init(void)
 
 #ifdef CONFIG_PNP
 
-        if (!nopnp) {
+        if (!param_nopnp) {
                 result = pnp_register_driver(&wbsd_pnp_driver);
                 if (result < 0)
                         return result;
         }
 #endif /* CONFIG_PNP */
 
-        if (nopnp) {
+        if (param_nopnp) {
                 result = platform_driver_register(&wbsd_driver);
                 if (result < 0)
                         return result;
@@ -2012,12 +2012,12 @@ static void __exit wbsd_drv_exit(void)
 {
 #ifdef CONFIG_PNP
 
-        if (!nopnp)
+        if (!param_nopnp)
                 pnp_unregister_driver(&wbsd_pnp_driver);
 
 #endif /* CONFIG_PNP */
 
-        if (nopnp) {
+        if (param_nopnp) {
                 platform_device_unregister(wbsd_device);
 
                 platform_driver_unregister(&wbsd_driver);
@@ -2029,11 +2029,11 @@ static void __exit wbsd_drv_exit(void)
 module_init(wbsd_drv_init);
 module_exit(wbsd_drv_exit);
 #ifdef CONFIG_PNP
-module_param(nopnp, uint, 0444);
+module_param_named(nopnp, param_nopnp, uint, 0444);
 #endif
-module_param(io, uint, 0444);
-module_param(irq, uint, 0444);
-module_param(dma, int, 0444);
+module_param_named(io, param_io, uint, 0444);
+module_param_named(irq, param_irq, uint, 0444);
+module_param_named(dma, param_dma, int, 0444);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Pierre Ossman <drzeus@drzeus.cx>");
diff --git a/drivers/net/wireless/libertas/if_sdio.c b/drivers/net/wireless/libertas/if_sdio.c
index 3dd537be87d8..b54e2ea8346b 100644
--- a/drivers/net/wireless/libertas/if_sdio.c
+++ b/drivers/net/wireless/libertas/if_sdio.c
@@ -1,7 +1,7 @@
 /*
  *  linux/drivers/net/wireless/libertas/if_sdio.c
  *
- *  Copyright 2007 Pierre Ossman
+ *  Copyright 2007-2008 Pierre Ossman
  *
  * Inspired by if_cs.c, Copyright 2007 Holger Schurig
  *
@@ -266,13 +266,10 @@ static int if_sdio_card_to_host(struct if_sdio_card *card)
 
         /*
          * The transfer must be in one transaction or the firmware
-         * goes suicidal.
+         * goes suicidal. There's no way to guarantee that for all
+         * controllers, but we can at least try.
          */
-        chunk = size;
-        if ((chunk > card->func->cur_blksize) || (chunk > 512)) {
-                chunk = (chunk + card->func->cur_blksize - 1) /
-                        card->func->cur_blksize * card->func->cur_blksize;
-        }
+        chunk = sdio_align_size(card->func, size);
 
         ret = sdio_readsb(card->func, card->buffer, card->ioport, chunk);
         if (ret)
@@ -696,13 +693,10 @@ static int if_sdio_host_to_card(struct lbs_private *priv,
 
         /*
          * The transfer must be in one transaction or the firmware
-         * goes suicidal.
+         * goes suicidal. There's no way to guarantee that for all
+         * controllers, but we can at least try.
          */
-        size = nb + 4;
-        if ((size > card->func->cur_blksize) || (size > 512)) {
-                size = (size + card->func->cur_blksize - 1) /
-                        card->func->cur_blksize * card->func->cur_blksize;
-        }
+        size = sdio_align_size(card->func, nb + 4);
 
         packet = kzalloc(sizeof(struct if_sdio_packet) + size,
                         GFP_ATOMIC);