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

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (53 commits)
  mmc: dw_mmc: support mmc power control with regulator
  mmc: dw_mmc: fix suspend/resume operation
  mmc: dw_mmc: add quirks for unreliable card detect, and capabilities
  mmc: tmio: fix address in kunmap_atomic() calls
  mmc: core: reset card voltage after power off
  mmc: core: export function mmc_do_release_host()
  mmc: sdio: remember new card RCA when redetecting card
  mmc: dw_mmc: Remove set-but-unused variable.
  mmc: sdhci-esdhc-imx: add card detect on custom GPIO for mx25/35
  mmc: sdhci-esdhc: broken card detection is not a default quirk
  mmc: sdhci-esdhc-imx: add write protect on custom GPIO on mx25/35
  mmc: msm_sdcc: remove needless cache flush after dma_unmap_sg()
  mmc: sh_mmcif: support aggressive clock gating
  mmc: check if mmc cards < 2GB do sector addressing
  mmc: core: comment on why sdio_reset is done at init time
  mmc: dw_mmc: support DDR mode
  mmc: via-sdmmc: Remove set-but-unused variable.
  mmc: cb710: Return err value in cb710_wait_while_busy()
  mmc: sdhci-pci: Remove set-but-unused variable.
  mmc: mxs-mmc: add mmc host driver for i.MX23/28
  ...

29 files changed, 1740 insertions, 252 deletions

diff --git a/drivers/mmc/card/Kconfig b/drivers/mmc/card/Kconfig
index 2a876c4099cd..3b1f783bf924 100644
--- a/drivers/mmc/card/Kconfig
+++ b/drivers/mmc/card/Kconfig
@@ -58,12 +58,11 @@ config SDIO_UART
 
 config MMC_TEST
         tristate "MMC host test driver"
-        default n
         help
           Development driver that performs a series of reads and writes
           to a memory card in order to expose certain well known bugs
           in host controllers. The tests are executed by writing to the
-          "test" file in sysfs under each card. Note that whatever is
+          "test" file in debugfs under each card. Note that whatever is
           on your card will be overwritten by these tests.
 
           This driver is only of interest to those developing or
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index bfc8a8ae55df..61d233a7c118 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -621,6 +621,7 @@ static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card)
         md->disk->private_data = md;
         md->disk->queue = md->queue.queue;
         md->disk->driverfs_dev = &card->dev;
+        set_disk_ro(md->disk, md->read_only);
 
         /*
          * As discussed on lkml, GENHD_FL_REMOVABLE should:
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
index 21adc27f4132..5ec8eddfcf6e 100644
--- a/drivers/mmc/card/mmc_test.c
+++ b/drivers/mmc/card/mmc_test.c
@@ -88,6 +88,7 @@ struct mmc_test_area {
  * @sectors: amount of sectors to check in one group
  * @ts: time values of transfer
  * @rate: calculated transfer rate
+ * @iops: I/O operations per second (times 100)
  */
 struct mmc_test_transfer_result {
         struct list_head link;
@@ -95,6 +96,7 @@ struct mmc_test_transfer_result {
         unsigned int sectors;
         struct timespec ts;
         unsigned int rate;
+        unsigned int iops;
 };
 
 /**
@@ -226,9 +228,10 @@ static int mmc_test_wait_busy(struct mmc_test_card *test)
 
                 if (!busy && mmc_test_busy(&cmd)) {
                         busy = 1;
-                        printk(KERN_INFO "%s: Warning: Host did not "
-                                "wait for busy state to end.\n",
-                                mmc_hostname(test->card->host));
+                        if (test->card->host->caps & MMC_CAP_WAIT_WHILE_BUSY)
+                                printk(KERN_INFO "%s: Warning: Host did not "
+                                        "wait for busy state to end.\n",
+                                        mmc_hostname(test->card->host));
                 }
         } while (mmc_test_busy(&cmd));
 
@@ -494,7 +497,7 @@ static unsigned int mmc_test_rate(uint64_t bytes, struct timespec *ts)
  */
 static void mmc_test_save_transfer_result(struct mmc_test_card *test,
         unsigned int count, unsigned int sectors, struct timespec ts,
-        unsigned int rate)
+        unsigned int rate, unsigned int iops)
 {
         struct mmc_test_transfer_result *tr;
 
@@ -509,6 +512,7 @@ static void mmc_test_save_transfer_result(struct mmc_test_card *test,
         tr->sectors = sectors;
         tr->ts = ts;
         tr->rate = rate;
+        tr->iops = iops;
 
         list_add_tail(&tr->link, &test->gr->tr_lst);
 }
@@ -519,20 +523,22 @@ static void mmc_test_save_transfer_result(struct mmc_test_card *test,
 static void mmc_test_print_rate(struct mmc_test_card *test, uint64_t bytes,
                                 struct timespec *ts1, struct timespec *ts2)
 {
-        unsigned int rate, sectors = bytes >> 9;
+        unsigned int rate, iops, sectors = bytes >> 9;
         struct timespec ts;
 
         ts = timespec_sub(*ts2, *ts1);
 
         rate = mmc_test_rate(bytes, &ts);
+        iops = mmc_test_rate(100, &ts); /* I/O ops per sec x 100 */
 
         printk(KERN_INFO "%s: Transfer of %u sectors (%u%s KiB) took %lu.%09lu "
-                         "seconds (%u kB/s, %u KiB/s)\n",
+                         "seconds (%u kB/s, %u KiB/s, %u.%02u IOPS)\n",
                          mmc_hostname(test->card->host), sectors, sectors >> 1,
                          (sectors & 1 ? ".5" : ""), (unsigned long)ts.tv_sec,
-                         (unsigned long)ts.tv_nsec, rate / 1000, rate / 1024);
+                         (unsigned long)ts.tv_nsec, rate / 1000, rate / 1024,
+                         iops / 100, iops % 100);
 
-        mmc_test_save_transfer_result(test, 1, sectors, ts, rate);
+        mmc_test_save_transfer_result(test, 1, sectors, ts, rate, iops);
 }
 
 /*
@@ -542,22 +548,24 @@ static void mmc_test_print_avg_rate(struct mmc_test_card *test, uint64_t bytes,
                                     unsigned int count, struct timespec *ts1,
                                     struct timespec *ts2)
 {
-        unsigned int rate, sectors = bytes >> 9;
+        unsigned int rate, iops, sectors = bytes >> 9;
         uint64_t tot = bytes * count;
         struct timespec ts;
 
         ts = timespec_sub(*ts2, *ts1);
 
         rate = mmc_test_rate(tot, &ts);
+        iops = mmc_test_rate(count * 100, &ts); /* I/O ops per sec x 100 */
 
         printk(KERN_INFO "%s: Transfer of %u x %u sectors (%u x %u%s KiB) took "
-                         "%lu.%09lu seconds (%u kB/s, %u KiB/s)\n",
+                         "%lu.%09lu seconds (%u kB/s, %u KiB/s, "
+                         "%u.%02u IOPS)\n",
                          mmc_hostname(test->card->host), count, sectors, count,
                          sectors >> 1, (sectors & 1 ? ".5" : ""),
                          (unsigned long)ts.tv_sec, (unsigned long)ts.tv_nsec,
-                         rate / 1000, rate / 1024);
+                         rate / 1000, rate / 1024, iops / 100, iops % 100);
 
-        mmc_test_save_transfer_result(test, count, sectors, ts, rate);
+        mmc_test_save_transfer_result(test, count, sectors, ts, rate, iops);
 }
 
 /*
@@ -1425,28 +1433,29 @@ static int mmc_test_area_cleanup(struct mmc_test_card *test)
 }
 
 /*
- * Initialize an area for testing large transfers.  The size of the area is the
- * preferred erase size which is a good size for optimal transfer speed.  Note
- * that is typically 4MiB for modern cards.  The test area is set to the middle
- * of the card because cards may have different charateristics at the front
- * (for FAT file system optimization).  Optionally, the area is erased (if the
- * card supports it) which may improve write performance.  Optionally, the area
- * is filled with data for subsequent read tests.
+ * Initialize an area for testing large transfers.  The test area is set to the
+ * middle of the card because cards may have different charateristics at the
+ * front (for FAT file system optimization).  Optionally, the area is erased
+ * (if the card supports it) which may improve write performance.  Optionally,
+ * the area is filled with data for subsequent read tests.
  */
 static int mmc_test_area_init(struct mmc_test_card *test, int erase, int fill)
 {
         struct mmc_test_area *t = &test->area;
-        unsigned long min_sz = 64 * 1024;
+        unsigned long min_sz = 64 * 1024, sz;
         int ret;
 
         ret = mmc_test_set_blksize(test, 512);
         if (ret)
                 return ret;
 
-        if (test->card->pref_erase > TEST_AREA_MAX_SIZE >> 9)
-                t->max_sz = TEST_AREA_MAX_SIZE;
-        else
-                t->max_sz = (unsigned long)test->card->pref_erase << 9;
+        /* Make the test area size about 4MiB */
+        sz = (unsigned long)test->card->pref_erase << 9;
+        t->max_sz = sz;
+        while (t->max_sz < 4 * 1024 * 1024)
+                t->max_sz += sz;
+        while (t->max_sz > TEST_AREA_MAX_SIZE && t->max_sz > sz)
+                t->max_sz -= sz;
 
         t->max_segs = test->card->host->max_segs;
         t->max_seg_sz = test->card->host->max_seg_size;
@@ -1766,6 +1775,188 @@ static int mmc_test_profile_seq_trim_perf(struct mmc_test_card *test)
         return 0;
 }
 
+static unsigned int rnd_next = 1;
+
+static unsigned int mmc_test_rnd_num(unsigned int rnd_cnt)
+{
+        uint64_t r;
+
+        rnd_next = rnd_next * 1103515245 + 12345;
+        r = (rnd_next >> 16) & 0x7fff;
+        return (r * rnd_cnt) >> 15;
+}
+
+static int mmc_test_rnd_perf(struct mmc_test_card *test, int write, int print,
+                             unsigned long sz)
+{
+        unsigned int dev_addr, cnt, rnd_addr, range1, range2, last_ea = 0, ea;
+        unsigned int ssz;
+        struct timespec ts1, ts2, ts;
+        int ret;
+
+        ssz = sz >> 9;
+
+        rnd_addr = mmc_test_capacity(test->card) / 4;
+        range1 = rnd_addr / test->card->pref_erase;
+        range2 = range1 / ssz;
+
+        getnstimeofday(&ts1);
+        for (cnt = 0; cnt < UINT_MAX; cnt++) {
+                getnstimeofday(&ts2);
+                ts = timespec_sub(ts2, ts1);
+                if (ts.tv_sec >= 10)
+                        break;
+                ea = mmc_test_rnd_num(range1);
+                if (ea == last_ea)
+                        ea -= 1;
+                last_ea = ea;
+                dev_addr = rnd_addr + test->card->pref_erase * ea +
+                           ssz * mmc_test_rnd_num(range2);
+                ret = mmc_test_area_io(test, sz, dev_addr, write, 0, 0);
+                if (ret)
+                        return ret;
+        }
+        if (print)
+                mmc_test_print_avg_rate(test, sz, cnt, &ts1, &ts2);
+        return 0;
+}
+
+static int mmc_test_random_perf(struct mmc_test_card *test, int write)
+{
+        unsigned int next;
+        unsigned long sz;
+        int ret;
+
+        for (sz = 512; sz < test->area.max_tfr; sz <<= 1) {
+                /*
+                 * When writing, try to get more consistent results by running
+                 * the test twice with exactly the same I/O but outputting the
+                 * results only for the 2nd run.
+                 */
+                if (write) {
+                        next = rnd_next;
+                        ret = mmc_test_rnd_perf(test, write, 0, sz);
+                        if (ret)
+                                return ret;
+                        rnd_next = next;
+                }
+                ret = mmc_test_rnd_perf(test, write, 1, sz);
+                if (ret)
+                        return ret;
+        }
+        sz = test->area.max_tfr;
+        if (write) {
+                next = rnd_next;
+                ret = mmc_test_rnd_perf(test, write, 0, sz);
+                if (ret)
+                        return ret;
+                rnd_next = next;
+        }
+        return mmc_test_rnd_perf(test, write, 1, sz);
+}
+
+/*
+ * Random read performance by transfer size.
+ */
+static int mmc_test_random_read_perf(struct mmc_test_card *test)
+{
+        return mmc_test_random_perf(test, 0);
+}
+
+/*
+ * Random write performance by transfer size.
+ */
+static int mmc_test_random_write_perf(struct mmc_test_card *test)
+{
+        return mmc_test_random_perf(test, 1);
+}
+
+static int mmc_test_seq_perf(struct mmc_test_card *test, int write,
+                             unsigned int tot_sz, int max_scatter)
+{
+        unsigned int dev_addr, i, cnt, sz, ssz;
+        struct timespec ts1, ts2, ts;
+        int ret;
+
+        sz = test->area.max_tfr;
+        /*
+         * In the case of a maximally scattered transfer, the maximum transfer
+         * size is further limited by using PAGE_SIZE segments.
+         */
+        if (max_scatter) {
+                struct mmc_test_area *t = &test->area;
+                unsigned long max_tfr;
+
+                if (t->max_seg_sz >= PAGE_SIZE)
+                        max_tfr = t->max_segs * PAGE_SIZE;
+                else
+                        max_tfr = t->max_segs * t->max_seg_sz;
+                if (sz > max_tfr)
+                        sz = max_tfr;
+        }
+
+        ssz = sz >> 9;
+        dev_addr = mmc_test_capacity(test->card) / 4;
+        if (tot_sz > dev_addr << 9)
+                tot_sz = dev_addr << 9;
+        cnt = tot_sz / sz;
+        dev_addr &= 0xffff0000; /* Round to 64MiB boundary */
+
+        getnstimeofday(&ts1);
+        for (i = 0; i < cnt; i++) {
+                ret = mmc_test_area_io(test, sz, dev_addr, write,
+                                       max_scatter, 0);
+                if (ret)
+                        return ret;
+                dev_addr += ssz;
+        }
+        getnstimeofday(&ts2);
+
+        ts = timespec_sub(ts2, ts1);
+        mmc_test_print_avg_rate(test, sz, cnt, &ts1, &ts2);
+
+        return 0;
+}
+
+static int mmc_test_large_seq_perf(struct mmc_test_card *test, int write)
+{
+        int ret, i;
+
+        for (i = 0; i < 10; i++) {
+                ret = mmc_test_seq_perf(test, write, 10 * 1024 * 1024, 1);
+                if (ret)
+                        return ret;
+        }
+        for (i = 0; i < 5; i++) {
+                ret = mmc_test_seq_perf(test, write, 100 * 1024 * 1024, 1);
+                if (ret)
+                        return ret;
+        }
+        for (i = 0; i < 3; i++) {
+                ret = mmc_test_seq_perf(test, write, 1000 * 1024 * 1024, 1);
+                if (ret)
+                        return ret;
+        }
+
+        return ret;
+}
+
+/*
+ * Large sequential read performance.
+ */
+static int mmc_test_large_seq_read_perf(struct mmc_test_card *test)
+{
+        return mmc_test_large_seq_perf(test, 0);
+}
+
+/*
+ * Large sequential write performance.
+ */
+static int mmc_test_large_seq_write_perf(struct mmc_test_card *test)
+{
+        return mmc_test_large_seq_perf(test, 1);
+}
+
 static const struct mmc_test_case mmc_test_cases[] = {
         {
                 .name = "Basic write (no data verification)",
@@ -2005,6 +2196,34 @@ static const struct mmc_test_case mmc_test_cases[] = {
                 .cleanup = mmc_test_area_cleanup,
         },
 
+        {
+                .name = "Random read performance by transfer size",
+                .prepare = mmc_test_area_prepare,
+                .run = mmc_test_random_read_perf,
+                .cleanup = mmc_test_area_cleanup,
+        },
+
+        {
+                .name = "Random write performance by transfer size",
+                .prepare = mmc_test_area_prepare,
+                .run = mmc_test_random_write_perf,
+                .cleanup = mmc_test_area_cleanup,
+        },
+
+        {
+                .name = "Large sequential read into scattered pages",
+                .prepare = mmc_test_area_prepare,
+                .run = mmc_test_large_seq_read_perf,
+                .cleanup = mmc_test_area_cleanup,
+        },
+
+        {
+                .name = "Large sequential write from scattered pages",
+                .prepare = mmc_test_area_prepare,
+                .run = mmc_test_large_seq_write_perf,
+                .cleanup = mmc_test_area_cleanup,
+        },
+
 };
 
 static DEFINE_MUTEX(mmc_test_lock);
@@ -2148,11 +2367,11 @@ static int mtf_test_show(struct seq_file *sf, void *data)
                 seq_printf(sf, "Test %d: %d\n", gr->testcase + 1, gr->result);
 
                 list_for_each_entry(tr, &gr->tr_lst, link) {
-                        seq_printf(sf, "%u %d %lu.%09lu %u\n",
+                        seq_printf(sf, "%u %d %lu.%09lu %u %u.%02u\n",
                                 tr->count, tr->sectors,
                                 (unsigned long)tr->ts.tv_sec,
                                 (unsigned long)tr->ts.tv_nsec,
-                                tr->rate);
+                                tr->rate, tr->iops / 100, tr->iops % 100);
                 }
         }
 
diff --git a/drivers/mmc/core/Makefile b/drivers/mmc/core/Makefile
index 86b479119332..639501970b41 100644
--- a/drivers/mmc/core/Makefile
+++ b/drivers/mmc/core/Makefile
@@ -6,6 +6,7 @@ obj-$(CONFIG_MMC)		+= mmc_core.o
 mmc_core-y                      := core.o bus.o host.o \
                                    mmc.o mmc_ops.o sd.o sd_ops.o \
                                    sdio.o sdio_ops.o sdio_bus.o \
-                                   sdio_cis.o sdio_io.o sdio_irq.o
+                                   sdio_cis.o sdio_io.o sdio_irq.o \
+                                   quirks.o
 
 mmc_core-$(CONFIG_DEBUG_FS)     += debugfs.o
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 150b5f3cd401..1f453acc8682 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -167,8 +167,6 @@ mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
 
         WARN_ON(!host->claimed);
 
-        led_trigger_event(host->led, LED_FULL);
-
         mrq->cmd->error = 0;
         mrq->cmd->mrq = mrq;
         if (mrq->data) {
@@ -194,6 +192,7 @@ mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
                 }
         }
         mmc_host_clk_ungate(host);
+        led_trigger_event(host->led, LED_FULL);
         host->ops->request(host, mrq);
 }
 
@@ -528,7 +527,14 @@ int mmc_try_claim_host(struct mmc_host *host)
 }
 EXPORT_SYMBOL(mmc_try_claim_host);
 
-static void mmc_do_release_host(struct mmc_host *host)
+/**
+ *      mmc_do_release_host - release a claimed host
+ *      @host: mmc host to release
+ *
+ *      If you successfully claimed a host, this function will
+ *      release it again.
+ */
+void mmc_do_release_host(struct mmc_host *host)
 {
         unsigned long flags;
 
@@ -543,6 +549,7 @@ static void mmc_do_release_host(struct mmc_host *host)
                 wake_up(&host->wq);
         }
 }
+EXPORT_SYMBOL(mmc_do_release_host);
 
 void mmc_host_deeper_disable(struct work_struct *work)
 {
@@ -1002,6 +1009,13 @@ static void mmc_power_off(struct mmc_host *host)
 {
         host->ios.clock = 0;
         host->ios.vdd = 0;
+
+        /*
+         * Reset ocr mask to be the highest possible voltage supported for
+         * this mmc host. This value will be used at next power up.
+         */
+        host->ocr = 1 << (fls(host->ocr_avail) - 1);
+
         if (!mmc_host_is_spi(host)) {
                 host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
                 host->ios.chip_select = MMC_CS_DONTCARE;
@@ -1495,6 +1509,12 @@ static int mmc_rescan_try_freq(struct mmc_host *host, unsigned freq)
                 mmc_hostname(host), __func__, host->f_init);
 #endif
         mmc_power_up(host);
+
+        /*
+         * sdio_reset sends CMD52 to reset card.  Since we do not know
+         * if the card is being re-initialized, just send it.  CMD52
+         * should be ignored by SD/eMMC cards.
+         */
         sdio_reset(host);
         mmc_go_idle(host);
 
diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h
index ca1fdde29df6..20b1c0831eac 100644
--- a/drivers/mmc/core/core.h
+++ b/drivers/mmc/core/core.h
@@ -61,6 +61,8 @@ int mmc_attach_mmc(struct mmc_host *host);
 int mmc_attach_sd(struct mmc_host *host);
 int mmc_attach_sdio(struct mmc_host *host);
 
+void mmc_fixup_device(struct mmc_card *card);
+
 /* Module parameters */
 extern int use_spi_crc;
 
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index b3ac6c5bc5c6..461e6a17fb90 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -160,10 +160,7 @@ static bool mmc_host_may_gate_card(struct mmc_card *card)
          * gate the clock, because there is somebody out there that may still
          * be using it.
          */
-        if (mmc_card_sdio(card))
-                return false;
-
-        return true;
+        return !(card->quirks & MMC_QUIRK_BROKEN_CLK_GATING);
 }
 
 /**
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 16006ef153fe..14e95f39a7bf 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -302,6 +302,44 @@ static int mmc_read_ext_csd(struct mmc_card *card)
         }
 
         if (card->ext_csd.rev >= 4) {
+                /*
+                 * Enhanced area feature support -- check whether the eMMC
+                 * card has the Enhanced area enabled.  If so, export enhanced
+                 * area offset and size to user by adding sysfs interface.
+                 */
+                if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) &&
+                                (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) {
+                        u8 hc_erase_grp_sz =
+                                ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
+                        u8 hc_wp_grp_sz =
+                                ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
+
+                        card->ext_csd.enhanced_area_en = 1;
+                        /*
+                         * calculate the enhanced data area offset, in bytes
+                         */
+                        card->ext_csd.enhanced_area_offset =
+                                (ext_csd[139] << 24) + (ext_csd[138] << 16) +
+                                (ext_csd[137] << 8) + ext_csd[136];
+                        if (mmc_card_blockaddr(card))
+                                card->ext_csd.enhanced_area_offset <<= 9;
+                        /*
+                         * calculate the enhanced data area size, in kilobytes
+                         */
+                        card->ext_csd.enhanced_area_size =
+                                (ext_csd[142] << 16) + (ext_csd[141] << 8) +
+                                ext_csd[140];
+                        card->ext_csd.enhanced_area_size *=
+                                (size_t)(hc_erase_grp_sz * hc_wp_grp_sz);
+                        card->ext_csd.enhanced_area_size <<= 9;
+                } else {
+                        /*
+                         * If the enhanced area is not enabled, disable these
+                         * device attributes.
+                         */
+                        card->ext_csd.enhanced_area_offset = -EINVAL;
+                        card->ext_csd.enhanced_area_size = -EINVAL;
+                }
                 card->ext_csd.sec_trim_mult =
                         ext_csd[EXT_CSD_SEC_TRIM_MULT];
                 card->ext_csd.sec_erase_mult =
@@ -336,6 +374,9 @@ MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid);
 MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name);
 MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid);
 MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial);
+MMC_DEV_ATTR(enhanced_area_offset, "%llu\n",
+                card->ext_csd.enhanced_area_offset);
+MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size);
 
 static struct attribute *mmc_std_attrs[] = {
         &dev_attr_cid.attr,
@@ -349,6 +390,8 @@ static struct attribute *mmc_std_attrs[] = {
         &dev_attr_name.attr,
         &dev_attr_oemid.attr,
         &dev_attr_serial.attr,
+        &dev_attr_enhanced_area_offset.attr,
+        &dev_attr_enhanced_area_size.attr,
         NULL,
 };
 
@@ -378,6 +421,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
         int err, ddr = 0;
         u32 cid[4];
         unsigned int max_dtr;
+        u32 rocr;
 
         BUG_ON(!host);
         WARN_ON(!host->claimed);
@@ -391,7 +435,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
         mmc_go_idle(host);
 
         /* The extra bit indicates that we support high capacity */
-        err = mmc_send_op_cond(host, ocr | (1 << 30), NULL);
+        err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr);
         if (err)
                 goto err;
 
@@ -479,11 +523,51 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
                 err = mmc_read_ext_csd(card);
                 if (err)
                         goto free_card;
+
+                /* If doing byte addressing, check if required to do sector
+                 * addressing.  Handle the case of <2GB cards needing sector
+                 * addressing.  See section 8.1 JEDEC Standard JED84-A441;
+                 * ocr register has bit 30 set for sector addressing.
+                 */
+                if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30)))
+                        mmc_card_set_blockaddr(card);
+
                 /* Erase size depends on CSD and Extended CSD */
                 mmc_set_erase_size(card);
         }
 
         /*
+         * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF
+         * bit.  This bit will be lost everytime after a reset or power off.
+         */
+        if (card->ext_csd.enhanced_area_en) {
+                err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+                                EXT_CSD_ERASE_GROUP_DEF, 1);
+
+                if (err && err != -EBADMSG)
+                        goto free_card;
+
+                if (err) {
+                        err = 0;
+                        /*
+                         * Just disable enhanced area off & sz
+                         * will try to enable ERASE_GROUP_DEF
+                         * during next time reinit
+                         */
+                        card->ext_csd.enhanced_area_offset = -EINVAL;
+                        card->ext_csd.enhanced_area_size = -EINVAL;
+                } else {
+                        card->ext_csd.erase_group_def = 1;
+                        /*
+                         * enable ERASE_GRP_DEF successfully.
+                         * This will affect the erase size, so
+                         * here need to reset erase size
+                         */
+                        mmc_set_erase_size(card);
+                }
+        }
+
+        /*
          * Activate high speed (if supported)
          */
         if ((card->ext_csd.hs_max_dtr != 0) &&
diff --git a/drivers/mmc/core/quirks.c b/drivers/mmc/core/quirks.c
new file mode 100644
index 000000000000..11118b74eb20
--- /dev/null
+++ b/drivers/mmc/core/quirks.c
@@ -0,0 +1,84 @@
+/*
+ *  This file contains work-arounds for many known sdio hardware
+ *  bugs.
+ *
+ *  Copyright (c) 2011 Pierre Tardy <tardyp@gmail.com>
+ *  Inspired from pci fixup code:
+ *  Copyright (c) 1999 Martin Mares <mj@ucw.cz>
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/mmc/card.h>
+#include <linux/mod_devicetable.h>
+
+/*
+ *  The world is not perfect and supplies us with broken mmc/sdio devices.
+ *  For at least a part of these bugs we need a work-around
+ */
+
+struct mmc_fixup {
+        u16 vendor, device;     /* You can use SDIO_ANY_ID here of course */
+        void (*vendor_fixup)(struct mmc_card *card, int data);
+        int data;
+};
+
+/*
+ * This hook just adds a quirk unconditionnally
+ */
+static void __maybe_unused add_quirk(struct mmc_card *card, int data)
+{
+        card->quirks |= data;
+}
+
+/*
+ * This hook just removes a quirk unconditionnally
+ */
+static void __maybe_unused remove_quirk(struct mmc_card *card, int data)
+{
+        card->quirks &= ~data;
+}
+
+/*
+ * This hook just adds a quirk for all sdio devices
+ */
+static void add_quirk_for_sdio_devices(struct mmc_card *card, int data)
+{
+        if (mmc_card_sdio(card))
+                card->quirks |= data;
+}
+
+#ifndef SDIO_VENDOR_ID_TI
+#define SDIO_VENDOR_ID_TI               0x0097
+#endif
+
+#ifndef SDIO_DEVICE_ID_TI_WL1271
+#define SDIO_DEVICE_ID_TI_WL1271        0x4076
+#endif
+
+static const struct mmc_fixup mmc_fixup_methods[] = {
+        /* by default sdio devices are considered CLK_GATING broken */
+        /* good cards will be whitelisted as they are tested */
+        { SDIO_ANY_ID, SDIO_ANY_ID,
+                add_quirk_for_sdio_devices, MMC_QUIRK_BROKEN_CLK_GATING },
+        { SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
+                remove_quirk, MMC_QUIRK_BROKEN_CLK_GATING },
+        { 0 }
+};
+
+void mmc_fixup_device(struct mmc_card *card)
+{
+        const struct mmc_fixup *f;
+
+        for (f = mmc_fixup_methods; f->vendor_fixup; f++) {
+                if ((f->vendor == card->cis.vendor
+                     || f->vendor == (u16) SDIO_ANY_ID) &&
+                    (f->device == card->cis.device
+                     || f->device == (u16) SDIO_ANY_ID)) {
+                        dev_dbg(&card->dev, "calling %pF\n", f->vendor_fixup);
+                        f->vendor_fixup(card, f->data);
+                }
+        }
+}
+EXPORT_SYMBOL(mmc_fixup_device);
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index d18c32bca99b..6dac89fe0535 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -21,6 +21,7 @@
 #include "core.h"
 #include "bus.h"
 #include "mmc_ops.h"
+#include "sd.h"
 #include "sd_ops.h"
 
 static const unsigned int tran_exp[] = {
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index ebc62ad4cc56..db0f0b44d684 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -395,6 +395,14 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr,
                 if (err)
                         goto remove;
 
+                /*
+                 * Update oldcard with the new RCA received from the SDIO
+                 * device -- we're doing this so that it's updated in the
+                 * "card" struct when oldcard overwrites that later.
+                 */
+                if (oldcard)
+                        oldcard->rca = card->rca;
+
                 mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
         }
 
@@ -458,6 +466,7 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr,
 
                 card = oldcard;
         }
+        mmc_fixup_device(card);
 
         if (card->type == MMC_TYPE_SD_COMBO) {
                 err = mmc_sd_setup_card(host, card, oldcard != NULL);
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 54f91321749a..1a21c6427a19 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -311,7 +311,7 @@ config MMC_MSM
 
 config MMC_MXC
         tristate "Freescale i.MX2/3 Multimedia Card Interface support"
-        depends on ARCH_MXC
+        depends on MACH_MX21 || MACH_MX27 || ARCH_MX31
         help
           This selects the Freescale i.MX2/3 Multimedia card Interface.
           If you have a i.MX platform with a Multimedia Card slot,
@@ -319,6 +319,15 @@ config MMC_MXC
 
           If unsure, say N.
 
+config MMC_MXS
+        tristate "Freescale MXS Multimedia Card Interface support"
+        depends on ARCH_MXS && MXS_DMA
+        help
+          This selects the Freescale SSP MMC controller found on MXS based
+          platforms like mx23/28.
+
+          If unsure, say N.
+
 config MMC_TIFM_SD
         tristate "TI Flash Media MMC/SD Interface support  (EXPERIMENTAL)"
         depends on EXPERIMENTAL && PCI
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index e834fb223e9a..30aa6867745f 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -6,6 +6,7 @@ obj-$(CONFIG_MMC_ARMMMCI)	+= mmci.o
 obj-$(CONFIG_MMC_PXA)           += pxamci.o
 obj-$(CONFIG_MMC_IMX)           += imxmmc.o
 obj-$(CONFIG_MMC_MXC)           += mxcmmc.o
+obj-$(CONFIG_MMC_MXS)           += mxs-mmc.o
 obj-$(CONFIG_MMC_SDHCI)         += sdhci.o
 obj-$(CONFIG_MMC_SDHCI_PCI)     += sdhci-pci.o
 obj-$(CONFIG_MMC_SDHCI_PXA)     += sdhci-pxa.o
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index ad2a7a032cdf..80bc9a5c25cc 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -578,7 +578,8 @@ static void atmci_dma_cleanup(struct atmel_mci *host)
         struct mmc_data                 *data = host->data;
 
         if (data)
-                dma_unmap_sg(&host->pdev->dev, data->sg, data->sg_len,
+                dma_unmap_sg(host->dma.chan->device->dev,
+                             data->sg, data->sg_len,
                              ((data->flags & MMC_DATA_WRITE)
                               ? DMA_TO_DEVICE : DMA_FROM_DEVICE));
 }
@@ -588,7 +589,7 @@ static void atmci_stop_dma(struct atmel_mci *host)
         struct dma_chan *chan = host->data_chan;
 
         if (chan) {
-          chan->device->device_control(chan, DMA_TERMINATE_ALL, 0);
+                dmaengine_terminate_all(chan);
                 atmci_dma_cleanup(host);
         } else {
                 /* Data transfer was stopped by the interrupt handler */
@@ -684,11 +685,11 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
         else
                 direction = DMA_TO_DEVICE;
 
-        sglen = dma_map_sg(&host->pdev->dev, data->sg, data->sg_len, direction);
-        if (sglen != data->sg_len)
-                goto unmap_exit;
+        sglen = dma_map_sg(chan->device->dev, data->sg,
+                           data->sg_len, direction);
+
         desc = chan->device->device_prep_slave_sg(chan,
-                        data->sg, data->sg_len, direction,
+                        data->sg, sglen, direction,
                         DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
         if (!desc)
                 goto unmap_exit;
@@ -699,7 +700,7 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
 
         return 0;
 unmap_exit:
-        dma_unmap_sg(&host->pdev->dev, data->sg, sglen, direction);
+        dma_unmap_sg(chan->device->dev, data->sg, data->sg_len, direction);
         return -ENOMEM;
 }
 
@@ -709,8 +710,8 @@ static void atmci_submit_data(struct atmel_mci *host)
         struct dma_async_tx_descriptor  *desc = host->dma.data_desc;
 
         if (chan) {
-                desc->tx_submit(desc);
-                chan->device->device_issue_pending(chan);
+                dmaengine_submit(desc);
+                dma_async_issue_pending(chan);
         }
 }
 
diff --git a/drivers/mmc/host/cb710-mmc.c b/drivers/mmc/host/cb710-mmc.c
index 66b4ce587f4b..ce2a47b71dd6 100644
--- a/drivers/mmc/host/cb710-mmc.c
+++ b/drivers/mmc/host/cb710-mmc.c
@@ -205,7 +205,7 @@ static int cb710_wait_while_busy(struct cb710_slot *slot, uint8_t mask)
                         "WAIT12: waited %d loops, mask %02X, entry val %08X, exit val %08X\n",
                         limit, mask, e, x);
 #endif
-        return 0;
+        return err;
 }
 
 static void cb710_mmc_set_transfer_size(struct cb710_slot *slot,
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 2fcc82577c1b..5a614069cb00 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -32,6 +32,7 @@
 #include <linux/mmc/mmc.h>
 #include <linux/mmc/dw_mmc.h>
 #include <linux/bitops.h>
+#include <linux/regulator/consumer.h>
 
 #include "dw_mmc.h"
 
@@ -562,7 +563,8 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot)
                              SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT, 0);
 
                 /* enable clock */
-                mci_writel(host, CLKENA, SDMMC_CLKEN_ENABLE);
+                mci_writel(host, CLKENA, SDMMC_CLKEN_ENABLE |
+                           SDMMC_CLKEN_LOW_PWR);
 
                 /* inform CIU */
                 mci_send_cmd(slot,
@@ -661,6 +663,7 @@ static void dw_mci_request(struct mmc_host *mmc, struct mmc_request *mrq)
 static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 {
         struct dw_mci_slot *slot = mmc_priv(mmc);
+        u32 regs;
 
         /* set default 1 bit mode */
         slot->ctype = SDMMC_CTYPE_1BIT;
@@ -672,6 +675,16 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
         case MMC_BUS_WIDTH_4:
                 slot->ctype = SDMMC_CTYPE_4BIT;
                 break;
+        case MMC_BUS_WIDTH_8:
+                slot->ctype = SDMMC_CTYPE_8BIT;
+                break;
+        }
+
+        /* DDR mode set */
+        if (ios->ddr) {
+                regs = mci_readl(slot->host, UHS_REG);
+                regs |= (0x1 << slot->id) << 16;
+                mci_writel(slot->host, UHS_REG, regs);
         }
 
         if (ios->clock) {
@@ -717,7 +730,9 @@ static int dw_mci_get_cd(struct mmc_host *mmc)
         struct dw_mci_board *brd = slot->host->pdata;
 
         /* Use platform get_cd function, else try onboard card detect */
-        if (brd->get_cd)
+        if (brd->quirks & DW_MCI_QUIRK_BROKEN_CARD_DETECTION)
+                present = 1;
+        else if (brd->get_cd)
                 present = !brd->get_cd(slot->id);
         else
                 present = (mci_readl(slot->host, CDETECT) & (1 << slot->id))
@@ -1019,13 +1034,10 @@ static void dw_mci_read_data_pio(struct dw_mci *host)
         struct mmc_data *data = host->data;
         int shift = host->data_shift;
         u32 status;
-        unsigned int nbytes = 0, len, old_len, count = 0;
+        unsigned int nbytes = 0, len;
 
         do {
                 len = SDMMC_GET_FCNT(mci_readl(host, STATUS)) << shift;
-                if (count == 0)
-                        old_len = len;
-
                 if (offset + len <= sg->length) {
                         host->pull_data(host, (void *)(buf + offset), len);
 
@@ -1070,7 +1082,6 @@ static void dw_mci_read_data_pio(struct dw_mci *host)
                         tasklet_schedule(&host->tasklet);
                         return;
                 }
-                count++;
         } while (status & SDMMC_INT_RXDR); /*if the RXDR is ready read again*/
         len = SDMMC_GET_FCNT(mci_readl(host, STATUS));
         host->pio_offset = offset;
@@ -1395,7 +1406,11 @@ static int __init dw_mci_init_slot(struct dw_mci *host, unsigned int id)
         if (host->pdata->setpower)
                 host->pdata->setpower(id, 0);
 
-        mmc->caps = 0;
+        if (host->pdata->caps)
+                mmc->caps = host->pdata->caps;
+        else
+                mmc->caps = 0;
+
         if (host->pdata->get_bus_wd)
                 if (host->pdata->get_bus_wd(slot->id) >= 4)
                         mmc->caps |= MMC_CAP_4_BIT_DATA;
@@ -1426,6 +1441,13 @@ static int __init dw_mci_init_slot(struct dw_mci *host, unsigned int id)
         }
 #endif /* CONFIG_MMC_DW_IDMAC */
 
+        host->vmmc = regulator_get(mmc_dev(mmc), "vmmc");
+        if (IS_ERR(host->vmmc)) {
+                printk(KERN_INFO "%s: no vmmc regulator found\n", mmc_hostname(mmc));
+                host->vmmc = NULL;
+        } else
+                regulator_enable(host->vmmc);
+
         if (dw_mci_get_cd(mmc))
                 set_bit(DW_MMC_CARD_PRESENT, &slot->flags);
         else
@@ -1441,6 +1463,12 @@ static int __init dw_mci_init_slot(struct dw_mci *host, unsigned int id)
         /* Card initially undetected */
         slot->last_detect_state = 0;
 
+        /*
+         * Card may have been plugged in prior to boot so we
+         * need to run the detect tasklet
+         */
+        tasklet_schedule(&host->card_tasklet);
+
         return 0;
 }
 
@@ -1619,8 +1647,9 @@ static int dw_mci_probe(struct platform_device *pdev)
          */
         fifo_size = mci_readl(host, FIFOTH);
         fifo_size = (fifo_size >> 16) & 0x7ff;
-        mci_writel(host, FIFOTH, ((0x2 << 28) | ((fifo_size/2 - 1) << 16) |
-                                  ((fifo_size/2) << 0)));
+        host->fifoth_val = ((0x2 << 28) | ((fifo_size/2 - 1) << 16) |
+                        ((fifo_size/2) << 0));
+        mci_writel(host, FIFOTH, host->fifoth_val);
 
         /* disable clock to CIU */
         mci_writel(host, CLKENA, 0);
@@ -1683,6 +1712,12 @@ err_dmaunmap:
                           host->sg_cpu, host->sg_dma);
         iounmap(host->regs);
 
+        if (host->vmmc) {
+                regulator_disable(host->vmmc);
+                regulator_put(host->vmmc);
+        }
+
+
 err_freehost:
         kfree(host);
         return ret;
@@ -1714,6 +1749,11 @@ static int __exit dw_mci_remove(struct platform_device *pdev)
         if (host->use_dma && host->dma_ops->exit)
                 host->dma_ops->exit(host);
 
+        if (host->vmmc) {
+                regulator_disable(host->vmmc);
+                regulator_put(host->vmmc);
+        }
+
         iounmap(host->regs);
 
         kfree(host);
@@ -1729,6 +1769,9 @@ static int dw_mci_suspend(struct platform_device *pdev, pm_message_t mesg)
         int i, ret;
         struct dw_mci *host = platform_get_drvdata(pdev);
 
+        if (host->vmmc)
+                regulator_enable(host->vmmc);
+
         for (i = 0; i < host->num_slots; i++) {
                 struct dw_mci_slot *slot = host->slot[i];
                 if (!slot)
@@ -1744,6 +1787,9 @@ static int dw_mci_suspend(struct platform_device *pdev, pm_message_t mesg)
                 }
         }
 
+        if (host->vmmc)
+                regulator_disable(host->vmmc);
+
         return 0;
 }
 
@@ -1752,6 +1798,23 @@ static int dw_mci_resume(struct platform_device *pdev)
         int i, ret;
         struct dw_mci *host = platform_get_drvdata(pdev);
 
+        if (host->dma_ops->init)
+                host->dma_ops->init(host);
+
+        if (!mci_wait_reset(&pdev->dev, host)) {
+                ret = -ENODEV;
+                return ret;
+        }
+
+        /* Restore the old value at FIFOTH register */
+        mci_writel(host, FIFOTH, host->fifoth_val);
+
+        mci_writel(host, RINTSTS, 0xFFFFFFFF);
+        mci_writel(host, INTMASK, SDMMC_INT_CMD_DONE | SDMMC_INT_DATA_OVER |
+                   SDMMC_INT_TXDR | SDMMC_INT_RXDR |
+                   DW_MCI_ERROR_FLAGS | SDMMC_INT_CD);
+        mci_writel(host, CTRL, SDMMC_CTRL_INT_ENABLE);
+
         for (i = 0; i < host->num_slots; i++) {
                 struct dw_mci_slot *slot = host->slot[i];
                 if (!slot)
diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
index 5dd55a75233d..23c662af5616 100644
--- a/drivers/mmc/host/dw_mmc.h
+++ b/drivers/mmc/host/dw_mmc.h
@@ -43,6 +43,7 @@
 #define SDMMC_USRID             0x068
 #define SDMMC_VERID             0x06c
 #define SDMMC_HCON              0x070
+#define SDMMC_UHS_REG           0x074
 #define SDMMC_BMOD              0x080
 #define SDMMC_PLDMND            0x084
 #define SDMMC_DBADDR            0x088
@@ -51,7 +52,6 @@
 #define SDMMC_DSCADDR           0x094
 #define SDMMC_BUFADDR           0x098
 #define SDMMC_DATA              0x100
-#define SDMMC_DATA_ADR          0x100
 
 /* shift bit field */
 #define _SBF(f, v)              ((v) << (f))
diff --git a/drivers/mmc/host/msm_sdcc.c b/drivers/mmc/host/msm_sdcc.c
index 97c9b3638d57..a4c865a5286b 100644
--- a/drivers/mmc/host/msm_sdcc.c
+++ b/drivers/mmc/host/msm_sdcc.c
@@ -267,14 +267,6 @@ msmsdcc_dma_complete_tlet(unsigned long data)
         dma_unmap_sg(mmc_dev(host->mmc), host->dma.sg, host->dma.num_ents,
                      host->dma.dir);
 
-        if (host->curr.user_pages) {
-                struct scatterlist *sg = host->dma.sg;
-                int i;
-
-                for (i = 0; i < host->dma.num_ents; i++)
-                        flush_dcache_page(sg_page(sg++));
-        }
-
         host->dma.sg = NULL;
         host->dma.busy = 0;
 
diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c
index 4428594261c5..cc20e0259325 100644
--- a/drivers/mmc/host/mxcmmc.c
+++ b/drivers/mmc/host/mxcmmc.c
@@ -32,16 +32,14 @@
 #include <linux/io.h>
 #include <linux/gpio.h>
 #include <linux/regulator/consumer.h>
+#include <linux/dmaengine.h>
 
 #include <asm/dma.h>
 #include <asm/irq.h>
 #include <asm/sizes.h>
 #include <mach/mmc.h>
 
-#ifdef CONFIG_ARCH_MX2
-#include <mach/dma-mx1-mx2.h>
-#define HAS_DMA
-#endif
+#include <mach/dma.h>
 
 #define DRIVER_NAME "mxc-mmc"
 
@@ -118,7 +116,8 @@ struct mxcmci_host {
         void __iomem            *base;
         int                     irq;
         int                     detect_irq;
-        int                     dma;
+        struct dma_chan         *dma;
+        struct dma_async_tx_descriptor *desc;
         int                     do_dma;
         int                     default_irq_mask;
         int                     use_sdio;
@@ -129,7 +128,6 @@ struct mxcmci_host {
         struct mmc_command      *cmd;
         struct mmc_data         *data;
 
-        unsigned int            dma_nents;
         unsigned int            datasize;
         unsigned int            dma_dir;
 
@@ -144,6 +142,11 @@ struct mxcmci_host {
         spinlock_t              lock;
 
         struct regulator        *vcc;
+
+        int                     burstlen;
+        int                     dmareq;
+        struct dma_slave_config dma_slave_config;
+        struct imx_dma_data     dma_data;
 };
 
 static void mxcmci_set_clk_rate(struct mxcmci_host *host, unsigned int clk_ios);
@@ -206,17 +209,16 @@ static void mxcmci_softreset(struct mxcmci_host *host)
 
         writew(0xff, host->base + MMC_REG_RES_TO);
 }
+static int mxcmci_setup_dma(struct mmc_host *mmc);
 
 static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data)
 {
         unsigned int nob = data->blocks;
         unsigned int blksz = data->blksz;
         unsigned int datasize = nob * blksz;
-#ifdef HAS_DMA
         struct scatterlist *sg;
-        int i;
-        int ret;
-#endif
+        int i, nents;
+
         if (data->flags & MMC_DATA_STREAM)
                 nob = 0xffff;
 
@@ -227,7 +229,9 @@ static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data)
         writew(blksz, host->base + MMC_REG_BLK_LEN);
         host->datasize = datasize;
 
-#ifdef HAS_DMA
+        if (!mxcmci_use_dma(host))
+                return 0;
+
         for_each_sg(data->sg, sg, data->sg_len, i) {
                 if (sg->offset & 3 || sg->length & 3) {
                         host->do_dma = 0;
@@ -235,34 +239,30 @@ static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data)
                 }
         }
 
-        if (data->flags & MMC_DATA_READ) {
+        if (data->flags & MMC_DATA_READ)
                 host->dma_dir = DMA_FROM_DEVICE;
-                host->dma_nents = dma_map_sg(mmc_dev(host->mmc), data->sg,
-                                             data->sg_len,  host->dma_dir);
-
-                ret = imx_dma_setup_sg(host->dma, data->sg, host->dma_nents,
-                                datasize,
-                                host->res->start + MMC_REG_BUFFER_ACCESS,
-                                DMA_MODE_READ);
-        } else {
+        else
                 host->dma_dir = DMA_TO_DEVICE;
-                host->dma_nents = dma_map_sg(mmc_dev(host->mmc), data->sg,
-                                             data->sg_len,  host->dma_dir);
 
-                ret = imx_dma_setup_sg(host->dma, data->sg, host->dma_nents,
-                                datasize,
-                                host->res->start + MMC_REG_BUFFER_ACCESS,
-                                DMA_MODE_WRITE);
-        }
+        nents = dma_map_sg(host->dma->device->dev, data->sg,
+                                     data->sg_len,  host->dma_dir);
+        if (nents != data->sg_len)
+                return -EINVAL;
+
+        host->desc = host->dma->device->device_prep_slave_sg(host->dma,
+                data->sg, data->sg_len, host->dma_dir,
+                DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 
-        if (ret) {
-                dev_err(mmc_dev(host->mmc), "failed to setup DMA : %d\n", ret);
-                return ret;
+        if (!host->desc) {
+                dma_unmap_sg(host->dma->device->dev, data->sg, data->sg_len,
+                                host->dma_dir);
+                host->do_dma = 0;
+                return 0; /* Fall back to PIO */
         }
         wmb();
 
-        imx_dma_enable(host->dma);
-#endif /* HAS_DMA */
+        dmaengine_submit(host->desc);
+
         return 0;
 }
 
@@ -337,13 +337,11 @@ static int mxcmci_finish_data(struct mxcmci_host *host, unsigned int stat)
         struct mmc_data *data = host->data;
         int data_error;
 
-#ifdef HAS_DMA
         if (mxcmci_use_dma(host)) {
-                imx_dma_disable(host->dma);
-                dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->dma_nents,
+                dmaengine_terminate_all(host->dma);
+                dma_unmap_sg(host->dma->device->dev, data->sg, data->sg_len,
                                 host->dma_dir);
         }
-#endif
 
         if (stat & STATUS_ERR_MASK) {
                 dev_dbg(mmc_dev(host->mmc), "request failed. status: 0x%08x\n",
@@ -545,7 +543,6 @@ static void mxcmci_datawork(struct work_struct *work)
         }
 }
 
-#ifdef HAS_DMA
 static void mxcmci_data_done(struct mxcmci_host *host, unsigned int stat)
 {
         struct mmc_data *data = host->data;
@@ -568,7 +565,6 @@ static void mxcmci_data_done(struct mxcmci_host *host, unsigned int stat)
                 mxcmci_finish_request(host, host->req);
         }
 }
-#endif /* HAS_DMA */
 
 static void mxcmci_cmd_done(struct mxcmci_host *host, unsigned int stat)
 {
@@ -606,12 +602,10 @@ static irqreturn_t mxcmci_irq(int irq, void *devid)
         sdio_irq = (stat & STATUS_SDIO_INT_ACTIVE) && host->use_sdio;
         spin_unlock_irqrestore(&host->lock, flags);
 
-#ifdef HAS_DMA
         if (mxcmci_use_dma(host) &&
             (stat & (STATUS_READ_OP_DONE | STATUS_WRITE_OP_DONE)))
                 writel(STATUS_READ_OP_DONE | STATUS_WRITE_OP_DONE,
                         host->base + MMC_REG_STATUS);
-#endif
 
         if (sdio_irq) {
                 writel(STATUS_SDIO_INT_ACTIVE, host->base + MMC_REG_STATUS);
@@ -621,14 +615,14 @@ static irqreturn_t mxcmci_irq(int irq, void *devid)
         if (stat & STATUS_END_CMD_RESP)
                 mxcmci_cmd_done(host, stat);
 
-#ifdef HAS_DMA
         if (mxcmci_use_dma(host) &&
                   (stat & (STATUS_DATA_TRANS_DONE | STATUS_WRITE_OP_DONE)))
                 mxcmci_data_done(host, stat);
-#endif
+
         if (host->default_irq_mask &&
                   (stat & (STATUS_CARD_INSERTION | STATUS_CARD_REMOVAL)))
                 mmc_detect_change(host->mmc, msecs_to_jiffies(200));
+
         return IRQ_HANDLED;
 }
 
@@ -642,9 +636,10 @@ static void mxcmci_request(struct mmc_host *mmc, struct mmc_request *req)
 
         host->req = req;
         host->cmdat &= ~CMD_DAT_CONT_INIT;
-#ifdef HAS_DMA
-        host->do_dma = 1;
-#endif
+
+        if (host->dma)
+                host->do_dma = 1;
+
         if (req->data) {
                 error = mxcmci_setup_data(host, req->data);
                 if (error) {
@@ -660,6 +655,7 @@ static void mxcmci_request(struct mmc_host *mmc, struct mmc_request *req)
         }
 
         error = mxcmci_start_cmd(host, req->cmd, cmdat);
+
 out:
         if (error)
                 mxcmci_finish_request(host, req);
@@ -698,22 +694,46 @@ static void mxcmci_set_clk_rate(struct mxcmci_host *host, unsigned int clk_ios)
                         prescaler, divider, clk_in, clk_ios);
 }
 
+static int mxcmci_setup_dma(struct mmc_host *mmc)
+{
+        struct mxcmci_host *host = mmc_priv(mmc);
+        struct dma_slave_config *config = &host->dma_slave_config;
+
+        config->dst_addr = host->res->start + MMC_REG_BUFFER_ACCESS;
+        config->src_addr = host->res->start + MMC_REG_BUFFER_ACCESS;
+        config->dst_addr_width = 4;
+        config->src_addr_width = 4;
+        config->dst_maxburst = host->burstlen;
+        config->src_maxburst = host->burstlen;
+
+        return dmaengine_slave_config(host->dma, config);
+}
+
 static void mxcmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 {
         struct mxcmci_host *host = mmc_priv(mmc);
-#ifdef HAS_DMA
-        unsigned int blen;
+        int burstlen, ret;
+
         /*
          * use burstlen of 64 in 4 bit mode (--> reg value  0)
          * use burstlen of 16 in 1 bit mode (--> reg value 16)
          */
         if (ios->bus_width == MMC_BUS_WIDTH_4)
-                blen = 0;
+                burstlen = 64;
         else
-                blen = 16;
+                burstlen = 16;
+
+        if (mxcmci_use_dma(host) && burstlen != host->burstlen) {
+                host->burstlen = burstlen;
+                ret = mxcmci_setup_dma(mmc);
+                if (ret) {
+                        dev_err(mmc_dev(host->mmc),
+                                "failed to config DMA channel. Falling back to PIO\n");
+                        dma_release_channel(host->dma);
+                        host->do_dma = 0;
+                }
+        }
 
-        imx_dma_config_burstlen(host->dma, blen);
-#endif
         if (ios->bus_width == MMC_BUS_WIDTH_4)
                 host->cmdat |= CMD_DAT_CONT_BUS_WIDTH_4;
         else
@@ -794,6 +814,18 @@ static void mxcmci_init_card(struct mmc_host *host, struct mmc_card *card)
                 host->caps |= MMC_CAP_4_BIT_DATA;
 }
 
+static bool filter(struct dma_chan *chan, void *param)
+{
+        struct mxcmci_host *host = param;
+
+        if (!imx_dma_is_general_purpose(chan))
+                return false;
+
+        chan->private = &host->dma_data;
+
+        return true;
+}
+
 static const struct mmc_host_ops mxcmci_ops = {
         .request                = mxcmci_request,
         .set_ios                = mxcmci_set_ios,
@@ -808,6 +840,7 @@ static int mxcmci_probe(struct platform_device *pdev)
         struct mxcmci_host *host = NULL;
         struct resource *iores, *r;
         int ret = 0, irq;
+        dma_cap_mask_t mask;
 
         printk(KERN_INFO "i.MX SDHC driver\n");
 
@@ -883,29 +916,23 @@ static int mxcmci_probe(struct platform_device *pdev)
 
         writel(host->default_irq_mask, host->base + MMC_REG_INT_CNTR);
 
-#ifdef HAS_DMA
-        host->dma = imx_dma_request_by_prio(DRIVER_NAME, DMA_PRIO_LOW);
-        if (host->dma < 0) {
-                dev_err(mmc_dev(host->mmc), "imx_dma_request_by_prio failed\n");
-                ret = -EBUSY;
-                goto out_clk_put;
-        }
-
         r = platform_get_resource(pdev, IORESOURCE_DMA, 0);
-        if (!r) {
-                ret = -EINVAL;
-                goto out_free_dma;
+        if (r) {
+                host->dmareq = r->start;
+                host->dma_data.peripheral_type = IMX_DMATYPE_SDHC;
+                host->dma_data.priority = DMA_PRIO_LOW;
+                host->dma_data.dma_request = host->dmareq;
+                dma_cap_zero(mask);
+                dma_cap_set(DMA_SLAVE, mask);
+                host->dma = dma_request_channel(mask, filter, host);
+                if (host->dma)
+                        mmc->max_seg_size = dma_get_max_seg_size(
+                                        host->dma->device->dev);
         }
 
-        ret = imx_dma_config_channel(host->dma,
-                                     IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_FIFO,
-                                     IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_LINEAR,
-                                     r->start, 0);
-        if (ret) {
-                dev_err(mmc_dev(host->mmc), "failed to config DMA channel\n");
-                goto out_free_dma;
-        }
-#endif
+        if (!host->dma)
+                dev_info(mmc_dev(host->mmc), "dma not available. Using PIO\n");
+
         INIT_WORK(&host->datawork, mxcmci_datawork);
 
         ret = request_irq(host->irq, mxcmci_irq, 0, DRIVER_NAME, host);
@@ -928,9 +955,8 @@ static int mxcmci_probe(struct platform_device *pdev)
 out_free_irq:
         free_irq(host->irq, host);
 out_free_dma:
-#ifdef HAS_DMA
-        imx_dma_free(host->dma);
-#endif
+        if (host->dma)
+                dma_release_channel(host->dma);
 out_clk_put:
         clk_disable(host->clk);
         clk_put(host->clk);
@@ -960,9 +986,10 @@ static int mxcmci_remove(struct platform_device *pdev)
 
         free_irq(host->irq, host);
         iounmap(host->base);
-#ifdef HAS_DMA
-        imx_dma_free(host->dma);
-#endif
+
+        if (host->dma)
+                dma_release_channel(host->dma);
+
         clk_disable(host->clk);
         clk_put(host->clk);
 
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
new file mode 100644
index 000000000000..99d39a6a1032
--- /dev/null
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -0,0 +1,874 @@
+/*
+ * Portions copyright (C) 2003 Russell King, PXA MMCI Driver
+ * Portions copyright (C) 2004-2005 Pierre Ossman, W83L51xD SD/MMC driver
+ *
+ * Copyright 2008 Embedded Alley Solutions, Inc.
+ * Copyright 2009-2011 Freescale Semiconductor, Inc.
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/dma-mapping.h>
+#include <linux/dmaengine.h>
+#include <linux/highmem.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/completion.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/mmc.h>
+#include <linux/mmc/sdio.h>
+#include <linux/gpio.h>
+#include <linux/regulator/consumer.h>
+
+#include <mach/mxs.h>
+#include <mach/common.h>
+#include <mach/dma.h>
+#include <mach/mmc.h>
+
+#define DRIVER_NAME     "mxs-mmc"
+
+/* card detect polling timeout */
+#define MXS_MMC_DETECT_TIMEOUT                  (HZ/2)
+
+#define SSP_VERSION_LATEST      4
+#define ssp_is_old()            (host->version < SSP_VERSION_LATEST)
+
+/* SSP registers */
+#define HW_SSP_CTRL0                            0x000
+#define  BM_SSP_CTRL0_RUN                       (1 << 29)
+#define  BM_SSP_CTRL0_SDIO_IRQ_CHECK            (1 << 28)
+#define  BM_SSP_CTRL0_IGNORE_CRC                (1 << 26)
+#define  BM_SSP_CTRL0_READ                      (1 << 25)
+#define  BM_SSP_CTRL0_DATA_XFER                 (1 << 24)
+#define  BP_SSP_CTRL0_BUS_WIDTH                 (22)
+#define  BM_SSP_CTRL0_BUS_WIDTH                 (0x3 << 22)
+#define  BM_SSP_CTRL0_WAIT_FOR_IRQ              (1 << 21)
+#define  BM_SSP_CTRL0_LONG_RESP                 (1 << 19)
+#define  BM_SSP_CTRL0_GET_RESP                  (1 << 17)
+#define  BM_SSP_CTRL0_ENABLE                    (1 << 16)
+#define  BP_SSP_CTRL0_XFER_COUNT                (0)
+#define  BM_SSP_CTRL0_XFER_COUNT                (0xffff)
+#define HW_SSP_CMD0                             0x010
+#define  BM_SSP_CMD0_DBL_DATA_RATE_EN           (1 << 25)
+#define  BM_SSP_CMD0_SLOW_CLKING_EN             (1 << 22)
+#define  BM_SSP_CMD0_CONT_CLKING_EN             (1 << 21)
+#define  BM_SSP_CMD0_APPEND_8CYC                (1 << 20)
+#define  BP_SSP_CMD0_BLOCK_SIZE                 (16)
+#define  BM_SSP_CMD0_BLOCK_SIZE                 (0xf << 16)
+#define  BP_SSP_CMD0_BLOCK_COUNT                (8)
+#define  BM_SSP_CMD0_BLOCK_COUNT                (0xff << 8)
+#define  BP_SSP_CMD0_CMD                        (0)
+#define  BM_SSP_CMD0_CMD                        (0xff)
+#define HW_SSP_CMD1                             0x020
+#define HW_SSP_XFER_SIZE                        0x030
+#define HW_SSP_BLOCK_SIZE                       0x040
+#define  BP_SSP_BLOCK_SIZE_BLOCK_COUNT          (4)
+#define  BM_SSP_BLOCK_SIZE_BLOCK_COUNT          (0xffffff << 4)
+#define  BP_SSP_BLOCK_SIZE_BLOCK_SIZE           (0)
+#define  BM_SSP_BLOCK_SIZE_BLOCK_SIZE           (0xf)
+#define HW_SSP_TIMING                           (ssp_is_old() ? 0x050 : 0x070)
+#define  BP_SSP_TIMING_TIMEOUT                  (16)
+#define  BM_SSP_TIMING_TIMEOUT                  (0xffff << 16)
+#define  BP_SSP_TIMING_CLOCK_DIVIDE             (8)
+#define  BM_SSP_TIMING_CLOCK_DIVIDE             (0xff << 8)
+#define  BP_SSP_TIMING_CLOCK_RATE               (0)
+#define  BM_SSP_TIMING_CLOCK_RATE               (0xff)
+#define HW_SSP_CTRL1                            (ssp_is_old() ? 0x060 : 0x080)
+#define  BM_SSP_CTRL1_SDIO_IRQ                  (1 << 31)
+#define  BM_SSP_CTRL1_SDIO_IRQ_EN               (1 << 30)
+#define  BM_SSP_CTRL1_RESP_ERR_IRQ              (1 << 29)
+#define  BM_SSP_CTRL1_RESP_ERR_IRQ_EN           (1 << 28)
+#define  BM_SSP_CTRL1_RESP_TIMEOUT_IRQ          (1 << 27)
+#define  BM_SSP_CTRL1_RESP_TIMEOUT_IRQ_EN       (1 << 26)
+#define  BM_SSP_CTRL1_DATA_TIMEOUT_IRQ          (1 << 25)
+#define  BM_SSP_CTRL1_DATA_TIMEOUT_IRQ_EN       (1 << 24)
+#define  BM_SSP_CTRL1_DATA_CRC_IRQ              (1 << 23)
+#define  BM_SSP_CTRL1_DATA_CRC_IRQ_EN           (1 << 22)
+#define  BM_SSP_CTRL1_FIFO_UNDERRUN_IRQ         (1 << 21)
+#define  BM_SSP_CTRL1_FIFO_UNDERRUN_IRQ_EN      (1 << 20)
+#define  BM_SSP_CTRL1_RECV_TIMEOUT_IRQ          (1 << 17)
+#define  BM_SSP_CTRL1_RECV_TIMEOUT_IRQ_EN       (1 << 16)
+#define  BM_SSP_CTRL1_FIFO_OVERRUN_IRQ          (1 << 15)
+#define  BM_SSP_CTRL1_FIFO_OVERRUN_IRQ_EN       (1 << 14)
+#define  BM_SSP_CTRL1_DMA_ENABLE                (1 << 13)
+#define  BM_SSP_CTRL1_POLARITY                  (1 << 9)
+#define  BP_SSP_CTRL1_WORD_LENGTH               (4)
+#define  BM_SSP_CTRL1_WORD_LENGTH               (0xf << 4)
+#define  BP_SSP_CTRL1_SSP_MODE                  (0)
+#define  BM_SSP_CTRL1_SSP_MODE                  (0xf)
+#define HW_SSP_SDRESP0                          (ssp_is_old() ? 0x080 : 0x0a0)
+#define HW_SSP_SDRESP1                          (ssp_is_old() ? 0x090 : 0x0b0)
+#define HW_SSP_SDRESP2                          (ssp_is_old() ? 0x0a0 : 0x0c0)
+#define HW_SSP_SDRESP3                          (ssp_is_old() ? 0x0b0 : 0x0d0)
+#define HW_SSP_STATUS                           (ssp_is_old() ? 0x0c0 : 0x100)
+#define  BM_SSP_STATUS_CARD_DETECT              (1 << 28)
+#define  BM_SSP_STATUS_SDIO_IRQ                 (1 << 17)
+#define HW_SSP_VERSION                          (cpu_is_mx23() ? 0x110 : 0x130)
+#define  BP_SSP_VERSION_MAJOR                   (24)
+
+#define BF_SSP(value, field)    (((value) << BP_SSP_##field) & BM_SSP_##field)
+
+#define MXS_MMC_IRQ_BITS        (BM_SSP_CTRL1_SDIO_IRQ          | \
+                                 BM_SSP_CTRL1_RESP_ERR_IRQ      | \
+                                 BM_SSP_CTRL1_RESP_TIMEOUT_IRQ  | \
+                                 BM_SSP_CTRL1_DATA_TIMEOUT_IRQ  | \
+                                 BM_SSP_CTRL1_DATA_CRC_IRQ      | \
+                                 BM_SSP_CTRL1_FIFO_UNDERRUN_IRQ | \
+                                 BM_SSP_CTRL1_RECV_TIMEOUT_IRQ  | \
+                                 BM_SSP_CTRL1_FIFO_OVERRUN_IRQ)
+
+#define SSP_PIO_NUM     3
+
+struct mxs_mmc_host {
+        struct mmc_host                 *mmc;
+        struct mmc_request              *mrq;
+        struct mmc_command              *cmd;
+        struct mmc_data                 *data;
+
+        void __iomem                    *base;
+        int                             irq;
+        struct resource                 *res;
+        struct resource                 *dma_res;
+        struct clk                      *clk;
+        unsigned int                    clk_rate;
+
+        struct dma_chan                 *dmach;
+        struct mxs_dma_data             dma_data;
+        unsigned int                    dma_dir;
+        u32                             ssp_pio_words[SSP_PIO_NUM];
+
+        unsigned int                    version;
+        unsigned char                   bus_width;
+        spinlock_t                      lock;
+        int                             sdio_irq_en;
+};
+
+static int mxs_mmc_get_ro(struct mmc_host *mmc)
+{
+        struct mxs_mmc_host *host = mmc_priv(mmc);
+        struct mxs_mmc_platform_data *pdata =
+                mmc_dev(host->mmc)->platform_data;
+
+        if (!pdata)
+                return -EFAULT;
+
+        if (!gpio_is_valid(pdata->wp_gpio))
+                return -EINVAL;
+
+        return gpio_get_value(pdata->wp_gpio);
+}
+
+static int mxs_mmc_get_cd(struct mmc_host *mmc)
+{
+        struct mxs_mmc_host *host = mmc_priv(mmc);
+
+        return !(readl(host->base + HW_SSP_STATUS) &
+                 BM_SSP_STATUS_CARD_DETECT);
+}
+
+static void mxs_mmc_reset(struct mxs_mmc_host *host)
+{
+        u32 ctrl0, ctrl1;
+
+        mxs_reset_block(host->base);
+
+        ctrl0 = BM_SSP_CTRL0_IGNORE_CRC;
+        ctrl1 = BF_SSP(0x3, CTRL1_SSP_MODE) |
+                BF_SSP(0x7, CTRL1_WORD_LENGTH) |
+                BM_SSP_CTRL1_DMA_ENABLE |
+                BM_SSP_CTRL1_POLARITY |
+                BM_SSP_CTRL1_RECV_TIMEOUT_IRQ_EN |
+                BM_SSP_CTRL1_DATA_CRC_IRQ_EN |
+                BM_SSP_CTRL1_DATA_TIMEOUT_IRQ_EN |
+                BM_SSP_CTRL1_RESP_TIMEOUT_IRQ_EN |
+                BM_SSP_CTRL1_RESP_ERR_IRQ_EN;
+
+        writel(BF_SSP(0xffff, TIMING_TIMEOUT) |
+               BF_SSP(2, TIMING_CLOCK_DIVIDE) |
+               BF_SSP(0, TIMING_CLOCK_RATE),
+               host->base + HW_SSP_TIMING);
+
+        if (host->sdio_irq_en) {
+                ctrl0 |= BM_SSP_CTRL0_SDIO_IRQ_CHECK;
+                ctrl1 |= BM_SSP_CTRL1_SDIO_IRQ_EN;
+        }
+
+        writel(ctrl0, host->base + HW_SSP_CTRL0);
+        writel(ctrl1, host->base + HW_SSP_CTRL1);
+}
+
+static void mxs_mmc_start_cmd(struct mxs_mmc_host *host,
+                              struct mmc_command *cmd);
+
+static void mxs_mmc_request_done(struct mxs_mmc_host *host)
+{
+        struct mmc_command *cmd = host->cmd;
+        struct mmc_data *data = host->data;
+        struct mmc_request *mrq = host->mrq;
+
+        if (mmc_resp_type(cmd) & MMC_RSP_PRESENT) {
+                if (mmc_resp_type(cmd) & MMC_RSP_136) {
+                        cmd->resp[3] = readl(host->base + HW_SSP_SDRESP0);
+                        cmd->resp[2] = readl(host->base + HW_SSP_SDRESP1);
+                        cmd->resp[1] = readl(host->base + HW_SSP_SDRESP2);
+                        cmd->resp[0] = readl(host->base + HW_SSP_SDRESP3);
+                } else {
+                        cmd->resp[0] = readl(host->base + HW_SSP_SDRESP0);
+                }
+        }
+
+        if (data) {
+                dma_unmap_sg(mmc_dev(host->mmc), data->sg,
+                             data->sg_len, host->dma_dir);
+                /*
+                 * If there was an error on any block, we mark all
+                 * data blocks as being in error.
+                 */
+                if (!data->error)
+                        data->bytes_xfered = data->blocks * data->blksz;
+                else
+                        data->bytes_xfered = 0;
+
+                host->data = NULL;
+                if (mrq->stop) {
+                        mxs_mmc_start_cmd(host, mrq->stop);
+                        return;
+                }
+        }
+
+        host->mrq = NULL;
+        mmc_request_done(host->mmc, mrq);
+}
+
+static void mxs_mmc_dma_irq_callback(void *param)
+{
+        struct mxs_mmc_host *host = param;
+
+        mxs_mmc_request_done(host);
+}
+
+static irqreturn_t mxs_mmc_irq_handler(int irq, void *dev_id)
+{
+        struct mxs_mmc_host *host = dev_id;
+        struct mmc_command *cmd = host->cmd;
+        struct mmc_data *data = host->data;
+        u32 stat;
+
+        spin_lock(&host->lock);
+
+        stat = readl(host->base + HW_SSP_CTRL1);
+        writel(stat & MXS_MMC_IRQ_BITS,
+               host->base + HW_SSP_CTRL1 + MXS_CLR_ADDR);
+
+        if ((stat & BM_SSP_CTRL1_SDIO_IRQ) && (stat & BM_SSP_CTRL1_SDIO_IRQ_EN))
+                mmc_signal_sdio_irq(host->mmc);
+
+        spin_unlock(&host->lock);
+
+        if (stat & BM_SSP_CTRL1_RESP_TIMEOUT_IRQ)
+                cmd->error = -ETIMEDOUT;
+        else if (stat & BM_SSP_CTRL1_RESP_ERR_IRQ)
+                cmd->error = -EIO;
+
+        if (data) {
+                if (stat & (BM_SSP_CTRL1_DATA_TIMEOUT_IRQ |
+                            BM_SSP_CTRL1_RECV_TIMEOUT_IRQ))
+                        data->error = -ETIMEDOUT;
+                else if (stat & BM_SSP_CTRL1_DATA_CRC_IRQ)
+                        data->error = -EILSEQ;
+                else if (stat & (BM_SSP_CTRL1_FIFO_UNDERRUN_IRQ |
+                                 BM_SSP_CTRL1_FIFO_OVERRUN_IRQ))
+                        data->error = -EIO;
+        }
+
+        return IRQ_HANDLED;
+}
+
+static struct dma_async_tx_descriptor *mxs_mmc_prep_dma(
+        struct mxs_mmc_host *host, unsigned int append)
+{
+        struct dma_async_tx_descriptor *desc;
+        struct mmc_data *data = host->data;
+        struct scatterlist * sgl;
+        unsigned int sg_len;
+
+        if (data) {
+                /* data */
+                dma_map_sg(mmc_dev(host->mmc), data->sg,
+                           data->sg_len, host->dma_dir);
+                sgl = data->sg;
+                sg_len = data->sg_len;
+        } else {
+                /* pio */
+                sgl = (struct scatterlist *) host->ssp_pio_words;
+                sg_len = SSP_PIO_NUM;
+        }
+
+        desc = host->dmach->device->device_prep_slave_sg(host->dmach,
+                                sgl, sg_len, host->dma_dir, append);
+        if (desc) {
+                desc->callback = mxs_mmc_dma_irq_callback;
+                desc->callback_param = host;
+        } else {
+                if (data)
+                        dma_unmap_sg(mmc_dev(host->mmc), data->sg,
+                                     data->sg_len, host->dma_dir);
+        }
+
+        return desc;
+}
+
+static void mxs_mmc_bc(struct mxs_mmc_host *host)
+{
+        struct mmc_command *cmd = host->cmd;
+        struct dma_async_tx_descriptor *desc;
+        u32 ctrl0, cmd0, cmd1;
+
+        ctrl0 = BM_SSP_CTRL0_ENABLE | BM_SSP_CTRL0_IGNORE_CRC;
+        cmd0 = BF_SSP(cmd->opcode, CMD0_CMD) | BM_SSP_CMD0_APPEND_8CYC;
+        cmd1 = cmd->arg;
+
+        if (host->sdio_irq_en) {
+                ctrl0 |= BM_SSP_CTRL0_SDIO_IRQ_CHECK;
+                cmd0 |= BM_SSP_CMD0_CONT_CLKING_EN | BM_SSP_CMD0_SLOW_CLKING_EN;
+        }
+
+        host->ssp_pio_words[0] = ctrl0;
+        host->ssp_pio_words[1] = cmd0;
+        host->ssp_pio_words[2] = cmd1;
+        host->dma_dir = DMA_NONE;
+        desc = mxs_mmc_prep_dma(host, 0);
+        if (!desc)
+                goto out;
+
+        dmaengine_submit(desc);
+        return;
+
+out:
+        dev_warn(mmc_dev(host->mmc),
+                 "%s: failed to prep dma\n", __func__);
+}
+
+static void mxs_mmc_ac(struct mxs_mmc_host *host)
+{
+        struct mmc_command *cmd = host->cmd;
+        struct dma_async_tx_descriptor *desc;
+        u32 ignore_crc, get_resp, long_resp;
+        u32 ctrl0, cmd0, cmd1;
+
+        ignore_crc = (mmc_resp_type(cmd) & MMC_RSP_CRC) ?
+                        0 : BM_SSP_CTRL0_IGNORE_CRC;
+        get_resp = (mmc_resp_type(cmd) & MMC_RSP_PRESENT) ?
+                        BM_SSP_CTRL0_GET_RESP : 0;
+        long_resp = (mmc_resp_type(cmd) & MMC_RSP_136) ?
+                        BM_SSP_CTRL0_LONG_RESP : 0;
+
+        ctrl0 = BM_SSP_CTRL0_ENABLE | ignore_crc | get_resp | long_resp;
+        cmd0 = BF_SSP(cmd->opcode, CMD0_CMD);
+        cmd1 = cmd->arg;
+
+        if (host->sdio_irq_en) {
+                ctrl0 |= BM_SSP_CTRL0_SDIO_IRQ_CHECK;
+                cmd0 |= BM_SSP_CMD0_CONT_CLKING_EN | BM_SSP_CMD0_SLOW_CLKING_EN;
+        }
+
+        host->ssp_pio_words[0] = ctrl0;
+        host->ssp_pio_words[1] = cmd0;
+        host->ssp_pio_words[2] = cmd1;
+        host->dma_dir = DMA_NONE;
+        desc = mxs_mmc_prep_dma(host, 0);
+        if (!desc)
+                goto out;
+
+        dmaengine_submit(desc);
+        return;
+
+out:
+        dev_warn(mmc_dev(host->mmc),
+                 "%s: failed to prep dma\n", __func__);
+}
+
+static unsigned short mxs_ns_to_ssp_ticks(unsigned clock_rate, unsigned ns)
+{
+        const unsigned int ssp_timeout_mul = 4096;
+        /*
+         * Calculate ticks in ms since ns are large numbers
+         * and might overflow
+         */
+        const unsigned int clock_per_ms = clock_rate / 1000;
+        const unsigned int ms = ns / 1000;
+        const unsigned int ticks = ms * clock_per_ms;
+        const unsigned int ssp_ticks = ticks / ssp_timeout_mul;
+
+        WARN_ON(ssp_ticks == 0);
+        return ssp_ticks;
+}
+
+static void mxs_mmc_adtc(struct mxs_mmc_host *host)
+{
+        struct mmc_command *cmd = host->cmd;
+        struct mmc_data *data = cmd->data;
+        struct dma_async_tx_descriptor *desc;
+        struct scatterlist *sgl = data->sg, *sg;
+        unsigned int sg_len = data->sg_len;
+        int i;
+
+        unsigned short dma_data_dir, timeout;
+        unsigned int data_size = 0, log2_blksz;
+        unsigned int blocks = data->blocks;
+
+        u32 ignore_crc, get_resp, long_resp, read;
+        u32 ctrl0, cmd0, cmd1, val;
+
+        ignore_crc = (mmc_resp_type(cmd) & MMC_RSP_CRC) ?
+                        0 : BM_SSP_CTRL0_IGNORE_CRC;
+        get_resp = (mmc_resp_type(cmd) & MMC_RSP_PRESENT) ?
+                        BM_SSP_CTRL0_GET_RESP : 0;
+        long_resp = (mmc_resp_type(cmd) & MMC_RSP_136) ?
+                        BM_SSP_CTRL0_LONG_RESP : 0;
+
+        if (data->flags & MMC_DATA_WRITE) {
+                dma_data_dir = DMA_TO_DEVICE;
+                read = 0;
+        } else {
+                dma_data_dir = DMA_FROM_DEVICE;
+                read = BM_SSP_CTRL0_READ;
+        }
+
+        ctrl0 = BF_SSP(host->bus_width, CTRL0_BUS_WIDTH) |
+                ignore_crc | get_resp | long_resp |
+                BM_SSP_CTRL0_DATA_XFER | read |
+                BM_SSP_CTRL0_WAIT_FOR_IRQ |
+                BM_SSP_CTRL0_ENABLE;
+
+        cmd0 = BF_SSP(cmd->opcode, CMD0_CMD);
+
+        /* get logarithm to base 2 of block size for setting register */
+        log2_blksz = ilog2(data->blksz);
+
+        /*
+         * take special care of the case that data size from data->sg
+         * is not equal to blocks x blksz
+         */
+        for_each_sg(sgl, sg, sg_len, i)
+                data_size += sg->length;
+
+        if (data_size != data->blocks * data->blksz)
+                blocks = 1;
+
+        /* xfer count, block size and count need to be set differently */
+        if (ssp_is_old()) {
+                ctrl0 |= BF_SSP(data_size, CTRL0_XFER_COUNT);
+                cmd0 |= BF_SSP(log2_blksz, CMD0_BLOCK_SIZE) |
+                        BF_SSP(blocks - 1, CMD0_BLOCK_COUNT);
+        } else {
+                writel(data_size, host->base + HW_SSP_XFER_SIZE);
+                writel(BF_SSP(log2_blksz, BLOCK_SIZE_BLOCK_SIZE) |
+                       BF_SSP(blocks - 1, BLOCK_SIZE_BLOCK_COUNT),
+                       host->base + HW_SSP_BLOCK_SIZE);
+        }
+
+        if ((cmd->opcode == MMC_STOP_TRANSMISSION) ||
+            (cmd->opcode == SD_IO_RW_EXTENDED))
+                cmd0 |= BM_SSP_CMD0_APPEND_8CYC;
+
+        cmd1 = cmd->arg;
+
+        if (host->sdio_irq_en) {
+                ctrl0 |= BM_SSP_CTRL0_SDIO_IRQ_CHECK;
+                cmd0 |= BM_SSP_CMD0_CONT_CLKING_EN | BM_SSP_CMD0_SLOW_CLKING_EN;
+        }
+
+        /* set the timeout count */
+        timeout = mxs_ns_to_ssp_ticks(host->clk_rate, data->timeout_ns);
+        val = readl(host->base + HW_SSP_TIMING);
+        val &= ~(BM_SSP_TIMING_TIMEOUT);
+        val |= BF_SSP(timeout, TIMING_TIMEOUT);
+        writel(val, host->base + HW_SSP_TIMING);
+
+        /* pio */
+        host->ssp_pio_words[0] = ctrl0;
+        host->ssp_pio_words[1] = cmd0;
+        host->ssp_pio_words[2] = cmd1;
+        host->dma_dir = DMA_NONE;
+        desc = mxs_mmc_prep_dma(host, 0);
+        if (!desc)
+                goto out;
+
+        /* append data sg */
+        WARN_ON(host->data != NULL);
+        host->data = data;
+        host->dma_dir = dma_data_dir;
+        desc = mxs_mmc_prep_dma(host, 1);
+        if (!desc)
+                goto out;
+
+        dmaengine_submit(desc);
+        return;
+out:
+        dev_warn(mmc_dev(host->mmc),
+                 "%s: failed to prep dma\n", __func__);
+}
+
+static void mxs_mmc_start_cmd(struct mxs_mmc_host *host,
+                              struct mmc_command *cmd)
+{
+        host->cmd = cmd;
+
+        switch (mmc_cmd_type(cmd)) {
+        case MMC_CMD_BC:
+                mxs_mmc_bc(host);
+                break;
+        case MMC_CMD_BCR:
+                mxs_mmc_ac(host);
+                break;
+        case MMC_CMD_AC:
+                mxs_mmc_ac(host);
+                break;
+        case MMC_CMD_ADTC:
+                mxs_mmc_adtc(host);
+                break;
+        default:
+                dev_warn(mmc_dev(host->mmc),
+                         "%s: unknown MMC command\n", __func__);
+                break;
+        }
+}
+
+static void mxs_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
+{
+        struct mxs_mmc_host *host = mmc_priv(mmc);
+
+        WARN_ON(host->mrq != NULL);
+        host->mrq = mrq;
+        mxs_mmc_start_cmd(host, mrq->cmd);
+}
+
+static void mxs_mmc_set_clk_rate(struct mxs_mmc_host *host, unsigned int rate)
+{
+        unsigned int ssp_rate, bit_rate;
+        u32 div1, div2;
+        u32 val;
+
+        ssp_rate = clk_get_rate(host->clk);
+
+        for (div1 = 2; div1 < 254; div1 += 2) {
+                div2 = ssp_rate / rate / div1;
+                if (div2 < 0x100)
+                        break;
+        }
+
+        if (div1 >= 254) {
+                dev_err(mmc_dev(host->mmc),
+                        "%s: cannot set clock to %d\n", __func__, rate);
+                return;
+        }
+
+        if (div2 == 0)
+                bit_rate = ssp_rate / div1;
+        else
+                bit_rate = ssp_rate / div1 / div2;
+
+        val = readl(host->base + HW_SSP_TIMING);
+        val &= ~(BM_SSP_TIMING_CLOCK_DIVIDE | BM_SSP_TIMING_CLOCK_RATE);
+        val |= BF_SSP(div1, TIMING_CLOCK_DIVIDE);
+        val |= BF_SSP(div2 - 1, TIMING_CLOCK_RATE);
+        writel(val, host->base + HW_SSP_TIMING);
+
+        host->clk_rate = bit_rate;
+
+        dev_dbg(mmc_dev(host->mmc),
+                "%s: div1 %d, div2 %d, ssp %d, bit %d, rate %d\n",
+                __func__, div1, div2, ssp_rate, bit_rate, rate);
+}
+
+static void mxs_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+        struct mxs_mmc_host *host = mmc_priv(mmc);
+
+        if (ios->bus_width == MMC_BUS_WIDTH_8)
+                host->bus_width = 2;
+        else if (ios->bus_width == MMC_BUS_WIDTH_4)
+                host->bus_width = 1;
+        else
+                host->bus_width = 0;
+
+        if (ios->clock)
+                mxs_mmc_set_clk_rate(host, ios->clock);
+}
+
+static void mxs_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
+{
+        struct mxs_mmc_host *host = mmc_priv(mmc);
+        unsigned long flags;
+
+        spin_lock_irqsave(&host->lock, flags);
+
+        host->sdio_irq_en = enable;
+
+        if (enable) {
+                writel(BM_SSP_CTRL0_SDIO_IRQ_CHECK,
+                       host->base + HW_SSP_CTRL0 + MXS_SET_ADDR);
+                writel(BM_SSP_CTRL1_SDIO_IRQ_EN,
+                       host->base + HW_SSP_CTRL1 + MXS_SET_ADDR);
+
+                if (readl(host->base + HW_SSP_STATUS) & BM_SSP_STATUS_SDIO_IRQ)
+                        mmc_signal_sdio_irq(host->mmc);
+
+        } else {
+                writel(BM_SSP_CTRL0_SDIO_IRQ_CHECK,
+                       host->base + HW_SSP_CTRL0 + MXS_CLR_ADDR);
+                writel(BM_SSP_CTRL1_SDIO_IRQ_EN,
+                       host->base + HW_SSP_CTRL1 + MXS_CLR_ADDR);
+        }
+
+        spin_unlock_irqrestore(&host->lock, flags);
+}
+
+static const struct mmc_host_ops mxs_mmc_ops = {
+        .request = mxs_mmc_request,
+        .get_ro = mxs_mmc_get_ro,
+        .get_cd = mxs_mmc_get_cd,
+        .set_ios = mxs_mmc_set_ios,
+        .enable_sdio_irq = mxs_mmc_enable_sdio_irq,
+};
+
+static bool mxs_mmc_dma_filter(struct dma_chan *chan, void *param)
+{
+        struct mxs_mmc_host *host = param;
+
+        if (!mxs_dma_is_apbh(chan))
+                return false;
+
+        if (chan->chan_id != host->dma_res->start)
+                return false;
+
+        chan->private = &host->dma_data;
+
+        return true;
+}
+
+static int mxs_mmc_probe(struct platform_device *pdev)
+{
+        struct mxs_mmc_host *host;
+        struct mmc_host *mmc;
+        struct resource *iores, *dmares, *r;
+        struct mxs_mmc_platform_data *pdata;
+        int ret = 0, irq_err, irq_dma;
+        dma_cap_mask_t mask;
+
+        iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0);
+        irq_err = platform_get_irq(pdev, 0);
+        irq_dma = platform_get_irq(pdev, 1);
+        if (!iores || !dmares || irq_err < 0 || irq_dma < 0)
+                return -EINVAL;
+
+        r = request_mem_region(iores->start, resource_size(iores), pdev->name);
+        if (!r)
+                return -EBUSY;
+
+        mmc = mmc_alloc_host(sizeof(struct mxs_mmc_host), &pdev->dev);
+        if (!mmc) {
+                ret = -ENOMEM;
+                goto out_release_mem;
+        }
+
+        host = mmc_priv(mmc);
+        host->base = ioremap(r->start, resource_size(r));
+        if (!host->base) {
+                ret = -ENOMEM;
+                goto out_mmc_free;
+        }
+
+        /* only major verion does matter */
+        host->version = readl(host->base + HW_SSP_VERSION) >>
+                        BP_SSP_VERSION_MAJOR;
+
+        host->mmc = mmc;
+        host->res = r;
+        host->dma_res = dmares;
+        host->irq = irq_err;
+        host->sdio_irq_en = 0;
+
+        host->clk = clk_get(&pdev->dev, NULL);
+        if (IS_ERR(host->clk)) {
+                ret = PTR_ERR(host->clk);
+                goto out_iounmap;
+        }
+        clk_enable(host->clk);
+
+        mxs_mmc_reset(host);
+
+        dma_cap_zero(mask);
+        dma_cap_set(DMA_SLAVE, mask);
+        host->dma_data.chan_irq = irq_dma;
+        host->dmach = dma_request_channel(mask, mxs_mmc_dma_filter, host);
+        if (!host->dmach) {
+                dev_err(mmc_dev(host->mmc),
+                        "%s: failed to request dma\n", __func__);
+                goto out_clk_put;
+        }
+
+        /* set mmc core parameters */
+        mmc->ops = &mxs_mmc_ops;
+        mmc->caps = MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED |
+                    MMC_CAP_SDIO_IRQ | MMC_CAP_NEEDS_POLL;
+
+        pdata = mmc_dev(host->mmc)->platform_data;
+        if (pdata) {
+                if (pdata->flags & SLOTF_8_BIT_CAPABLE)
+                        mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA;
+                if (pdata->flags & SLOTF_4_BIT_CAPABLE)
+                        mmc->caps |= MMC_CAP_4_BIT_DATA;
+        }
+
+        mmc->f_min = 400000;
+        mmc->f_max = 288000000;
+        mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
+
+        mmc->max_segs = 52;
+        mmc->max_blk_size = 1 << 0xf;
+        mmc->max_blk_count = (ssp_is_old()) ? 0xff : 0xffffff;
+        mmc->max_req_size = (ssp_is_old()) ? 0xffff : 0xffffffff;
+        mmc->max_seg_size = dma_get_max_seg_size(host->dmach->device->dev);
+
+        platform_set_drvdata(pdev, mmc);
+
+        ret = request_irq(host->irq, mxs_mmc_irq_handler, 0, DRIVER_NAME, host);
+        if (ret)
+                goto out_free_dma;
+
+        spin_lock_init(&host->lock);
+
+        ret = mmc_add_host(mmc);
+        if (ret)
+                goto out_free_irq;
+
+        dev_info(mmc_dev(host->mmc), "initialized\n");
+
+        return 0;
+
+out_free_irq:
+        free_irq(host->irq, host);
+out_free_dma:
+        if (host->dmach)
+                dma_release_channel(host->dmach);
+out_clk_put:
+        clk_disable(host->clk);
+        clk_put(host->clk);
+out_iounmap:
+        iounmap(host->base);
+out_mmc_free:
+        mmc_free_host(mmc);
+out_release_mem:
+        release_mem_region(iores->start, resource_size(iores));
+        return ret;
+}
+
+static int mxs_mmc_remove(struct platform_device *pdev)
+{
+        struct mmc_host *mmc = platform_get_drvdata(pdev);
+        struct mxs_mmc_host *host = mmc_priv(mmc);
+        struct resource *res = host->res;
+
+        mmc_remove_host(mmc);
+
+        free_irq(host->irq, host);
+
+        platform_set_drvdata(pdev, NULL);
+
+        if (host->dmach)
+                dma_release_channel(host->dmach);
+
+        clk_disable(host->clk);
+        clk_put(host->clk);
+
+        iounmap(host->base);
+
+        mmc_free_host(mmc);
+
+        release_mem_region(res->start, resource_size(res));
+
+        return 0;
+}
+
+#ifdef CONFIG_PM
+static int mxs_mmc_suspend(struct device *dev)
+{
+        struct mmc_host *mmc = dev_get_drvdata(dev);
+        struct mxs_mmc_host *host = mmc_priv(mmc);
+        int ret = 0;
+
+        ret = mmc_suspend_host(mmc);
+
+        clk_disable(host->clk);
+
+        return ret;
+}
+
+static int mxs_mmc_resume(struct device *dev)
+{
+        struct mmc_host *mmc = dev_get_drvdata(dev);
+        struct mxs_mmc_host *host = mmc_priv(mmc);
+        int ret = 0;
+
+        clk_enable(host->clk);
+
+        ret = mmc_resume_host(mmc);
+
+        return ret;
+}
+
+static const struct dev_pm_ops mxs_mmc_pm_ops = {
+        .suspend        = mxs_mmc_suspend,
+        .resume         = mxs_mmc_resume,
+};
+#endif
+
+static struct platform_driver mxs_mmc_driver = {
+        .probe          = mxs_mmc_probe,
+        .remove         = mxs_mmc_remove,
+        .driver         = {
+                .name   = DRIVER_NAME,
+                .owner  = THIS_MODULE,
+#ifdef CONFIG_PM
+                .pm     = &mxs_mmc_pm_ops,
+#endif
+        },
+};
+
+static int __init mxs_mmc_init(void)
+{
+        return platform_driver_register(&mxs_mmc_driver);
+}
+
+static void __exit mxs_mmc_exit(void)
+{
+        platform_driver_unregister(&mxs_mmc_driver);
+}
+
+module_init(mxs_mmc_init);
+module_exit(mxs_mmc_exit);
+
+MODULE_DESCRIPTION("FREESCALE MXS MMC peripheral");
+MODULE_AUTHOR("Freescale Semiconductor");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index 9b82910b9dbb..3b5248567973 100644
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -15,9 +15,11 @@
 #include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/clk.h>
+#include <linux/gpio.h>
 #include <linux/mmc/host.h>
 #include <linux/mmc/sdhci-pltfm.h>
 #include <mach/hardware.h>
+#include <mach/esdhc.h>
 #include "sdhci.h"
 #include "sdhci-pltfm.h"
 #include "sdhci-esdhc.h"
@@ -30,6 +32,39 @@ static inline void esdhc_clrset_le(struct sdhci_host *host, u32 mask, u32 val, i
         writel(((readl(base) & ~(mask << shift)) | (val << shift)), base);
 }
 
+static u32 esdhc_readl_le(struct sdhci_host *host, int reg)
+{
+        /* fake CARD_PRESENT flag on mx25/35 */
+        u32 val = readl(host->ioaddr + reg);
+
+        if (unlikely(reg == SDHCI_PRESENT_STATE)) {
+                struct esdhc_platform_data *boarddata =
+                                host->mmc->parent->platform_data;
+
+                if (boarddata && gpio_is_valid(boarddata->cd_gpio)
+                                && gpio_get_value(boarddata->cd_gpio))
+                        /* no card, if a valid gpio says so... */
+                        val &= SDHCI_CARD_PRESENT;
+                else
+                        /* ... in all other cases assume card is present */
+                        val |= SDHCI_CARD_PRESENT;
+        }
+
+        return val;
+}
+
+static void esdhc_writel_le(struct sdhci_host *host, u32 val, int reg)
+{
+        if (unlikely(reg == SDHCI_INT_ENABLE || reg == SDHCI_SIGNAL_ENABLE))
+                /*
+                 * these interrupts won't work with a custom card_detect gpio
+                 * (only applied to mx25/35)
+                 */
+                val &= ~(SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT);
+
+        writel(val, host->ioaddr + reg);
+}
+
 static u16 esdhc_readw_le(struct sdhci_host *host, int reg)
 {
         if (unlikely(reg == SDHCI_HOST_VERSION))
@@ -100,10 +135,39 @@ static unsigned int esdhc_pltfm_get_min_clock(struct sdhci_host *host)
         return clk_get_rate(pltfm_host->clk) / 256 / 16;
 }
 
+static unsigned int esdhc_pltfm_get_ro(struct sdhci_host *host)
+{
+        struct esdhc_platform_data *boarddata = host->mmc->parent->platform_data;
+
+        if (boarddata && gpio_is_valid(boarddata->wp_gpio))
+                return gpio_get_value(boarddata->wp_gpio);
+        else
+                return -ENOSYS;
+}
+
+static struct sdhci_ops sdhci_esdhc_ops = {
+        .read_w = esdhc_readw_le,
+        .write_w = esdhc_writew_le,
+        .write_b = esdhc_writeb_le,
+        .set_clock = esdhc_set_clock,
+        .get_max_clock = esdhc_pltfm_get_max_clock,
+        .get_min_clock = esdhc_pltfm_get_min_clock,
+};
+
+static irqreturn_t cd_irq(int irq, void *data)
+{
+        struct sdhci_host *sdhost = (struct sdhci_host *)data;
+
+        tasklet_schedule(&sdhost->card_tasklet);
+        return IRQ_HANDLED;
+};
+
 static int esdhc_pltfm_init(struct sdhci_host *host, struct sdhci_pltfm_data *pdata)
 {
         struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+        struct esdhc_platform_data *boarddata = host->mmc->parent->platform_data;
         struct clk *clk;
+        int err;
 
         clk = clk_get(mmc_dev(host->mmc), NULL);
         if (IS_ERR(clk)) {
@@ -116,32 +180,78 @@ static int esdhc_pltfm_init(struct sdhci_host *host, struct sdhci_pltfm_data *pd
         if (cpu_is_mx35() || cpu_is_mx51())
                 host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
 
-        /* Fix errata ENGcm07207 which is present on i.MX25 and i.MX35 */
-        if (cpu_is_mx25() || cpu_is_mx35())
+        if (cpu_is_mx25() || cpu_is_mx35()) {
+                /* Fix errata ENGcm07207 present on i.MX25 and i.MX35 */
                 host->quirks |= SDHCI_QUIRK_NO_MULTIBLOCK;
+                /* write_protect can't be routed to controller, use gpio */
+                sdhci_esdhc_ops.get_ro = esdhc_pltfm_get_ro;
+        }
+
+        if (boarddata) {
+                err = gpio_request_one(boarddata->wp_gpio, GPIOF_IN, "ESDHC_WP");
+                if (err) {
+                        dev_warn(mmc_dev(host->mmc),
+                                "no write-protect pin available!\n");
+                        boarddata->wp_gpio = err;
+                }
+
+                err = gpio_request_one(boarddata->cd_gpio, GPIOF_IN, "ESDHC_CD");
+                if (err) {
+                        dev_warn(mmc_dev(host->mmc),
+                                "no card-detect pin available!\n");
+                        goto no_card_detect_pin;
+                }
+
+                /* i.MX5x has issues to be researched */
+                if (!cpu_is_mx25() && !cpu_is_mx35())
+                        goto not_supported;
+
+                err = request_irq(gpio_to_irq(boarddata->cd_gpio), cd_irq,
+                                 IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
+                                 mmc_hostname(host->mmc), host);
+                if (err) {
+                        dev_warn(mmc_dev(host->mmc), "request irq error\n");
+                        goto no_card_detect_irq;
+                }
+
+                sdhci_esdhc_ops.write_l = esdhc_writel_le;
+                sdhci_esdhc_ops.read_l = esdhc_readl_le;
+                /* Now we have a working card_detect again */
+                host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION;
+        }
+
+        return 0;
 
+ no_card_detect_irq:
+        gpio_free(boarddata->cd_gpio);
+ no_card_detect_pin:
+        boarddata->cd_gpio = err;
+ not_supported:
         return 0;
 }
 
 static void esdhc_pltfm_exit(struct sdhci_host *host)
 {
         struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+        struct esdhc_platform_data *boarddata = host->mmc->parent->platform_data;
+
+        if (boarddata && gpio_is_valid(boarddata->wp_gpio))
+                gpio_free(boarddata->wp_gpio);
+
+        if (boarddata && gpio_is_valid(boarddata->cd_gpio)) {
+                gpio_free(boarddata->cd_gpio);
+
+                if (!(host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION))
+                        free_irq(gpio_to_irq(boarddata->cd_gpio), host);
+        }
 
         clk_disable(pltfm_host->clk);
         clk_put(pltfm_host->clk);
 }
 
-static struct sdhci_ops sdhci_esdhc_ops = {
-        .read_w = esdhc_readw_le,
-        .write_w = esdhc_writew_le,
-        .write_b = esdhc_writeb_le,
-        .set_clock = esdhc_set_clock,
-        .get_max_clock = esdhc_pltfm_get_max_clock,
-        .get_min_clock = esdhc_pltfm_get_min_clock,
-};
-
 struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = {
-        .quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_BROKEN_ADMA,
+        .quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_BROKEN_ADMA
+                        | SDHCI_QUIRK_BROKEN_CARD_DETECTION,
         /* ADMA has issues. Might be fixable */
         .ops = &sdhci_esdhc_ops,
         .init = esdhc_pltfm_init,
diff --git a/drivers/mmc/host/sdhci-esdhc.h b/drivers/mmc/host/sdhci-esdhc.h
index afaf1bc4913a..c55aae828aac 100644
--- a/drivers/mmc/host/sdhci-esdhc.h
+++ b/drivers/mmc/host/sdhci-esdhc.h
@@ -19,7 +19,6 @@
  */
 
 #define ESDHC_DEFAULT_QUIRKS    (SDHCI_QUIRK_FORCE_BLK_SZ_2048 | \
-                                SDHCI_QUIRK_BROKEN_CARD_DETECTION | \
                                 SDHCI_QUIRK_NO_BUSY_IRQ | \
                                 SDHCI_QUIRK_NONSTANDARD_CLOCK | \
                                 SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK | \
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index fcd0e1fcba44..08161f690ae8 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -73,7 +73,8 @@ static unsigned int esdhc_of_get_min_clock(struct sdhci_host *host)
 }
 
 struct sdhci_of_data sdhci_esdhc = {
-        .quirks = ESDHC_DEFAULT_QUIRKS,
+        /* card detection could be handled via GPIO */
+        .quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_BROKEN_CARD_DETECTION,
         .ops = {
                 .read_l = sdhci_be32bs_readl,
                 .read_w = esdhc_readw,
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 0dc905b20eee..2f8d46854acd 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -547,6 +547,14 @@ static const struct pci_device_id pci_ids[] __devinitdata = {
         },
 
         {
+                .vendor         = PCI_VENDOR_ID_RICOH,
+                .device         = 0xe823,
+                .subvendor      = PCI_ANY_ID,
+                .subdevice      = PCI_ANY_ID,
+                .driver_data    = (kernel_ulong_t)&sdhci_ricoh_mmc,
+        },
+
+        {
                 .vendor         = PCI_VENDOR_ID_ENE,
                 .device         = PCI_DEVICE_ID_ENE_CB712_SD,
                 .subvendor      = PCI_ANY_ID,
@@ -900,9 +908,6 @@ static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot(
 {
         struct sdhci_pci_slot *slot;
         struct sdhci_host *host;
-
-        resource_size_t addr;
-
         int ret;
 
         if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
@@ -949,7 +954,6 @@ static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot(
                 goto free;
         }
 
-        addr = pci_resource_start(pdev, bar);
         host->ioaddr = pci_ioremap_bar(pdev, bar);
         if (!host->ioaddr) {
                 dev_err(&pdev->dev, "failed to remap registers\n");
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index 5309ab95aada..69e3ee321eb5 100644
--- a/drivers/mmc/host/sdhci-s3c.c
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -499,6 +499,9 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
          * SDHCI block, or a missing configuration that needs to be set. */
         host->quirks |= SDHCI_QUIRK_NO_BUSY_IRQ;
 
+        /* This host supports the Auto CMD12 */
+        host->quirks |= SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12;
+
         if (pdata->cd_type == S3C_SDHCI_CD_NONE ||
             pdata->cd_type == S3C_SDHCI_CD_PERMANENT)
                 host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION;
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index 4823ee94a63f..f7e1f964395f 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -169,7 +169,7 @@ static int tegra_sdhci_pltfm_init(struct sdhci_host *host,
                 if (rc) {
                         dev_err(mmc_dev(host->mmc),
                                 "failed to allocate wp gpio\n");
-                        goto out_cd;
+                        goto out_irq;
                 }
                 tegra_gpio_enable(plat->wp_gpio);
                 gpio_direction_input(plat->wp_gpio);
@@ -195,6 +195,9 @@ out_wp:
                 gpio_free(plat->wp_gpio);
         }
 
+out_irq:
+        if (gpio_is_valid(plat->cd_gpio))
+                free_irq(gpio_to_irq(plat->cd_gpio), host);
 out_cd:
         if (gpio_is_valid(plat->cd_gpio)) {
                 tegra_gpio_disable(plat->cd_gpio);
@@ -225,6 +228,7 @@ static void tegra_sdhci_pltfm_exit(struct sdhci_host *host)
         }
 
         if (gpio_is_valid(plat->cd_gpio)) {
+                free_irq(gpio_to_irq(plat->cd_gpio), host);
                 tegra_gpio_disable(plat->cd_gpio);
                 gpio_free(plat->cd_gpio);
         }
diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index 12884c270171..af97015a2fc7 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -169,7 +169,7 @@ struct sh_mmcif_host {
         struct dma_chan         *chan_rx;
         struct dma_chan         *chan_tx;
         struct completion       dma_complete;
-        unsigned int            dma_sglen;
+        bool                    dma_active;
 };
 
 static inline void sh_mmcif_bitset(struct sh_mmcif_host *host,
@@ -194,10 +194,12 @@ static void mmcif_dma_complete(void *arg)
                 return;
 
         if (host->data->flags & MMC_DATA_READ)
-                dma_unmap_sg(&host->pd->dev, host->data->sg, host->dma_sglen,
+                dma_unmap_sg(host->chan_rx->device->dev,
+                             host->data->sg, host->data->sg_len,
                              DMA_FROM_DEVICE);
         else
-                dma_unmap_sg(&host->pd->dev, host->data->sg, host->dma_sglen,
+                dma_unmap_sg(host->chan_tx->device->dev,
+                             host->data->sg, host->data->sg_len,
                              DMA_TO_DEVICE);
 
         complete(&host->dma_complete);
@@ -211,9 +213,10 @@ static void sh_mmcif_start_dma_rx(struct sh_mmcif_host *host)
         dma_cookie_t cookie = -EINVAL;
         int ret;
 
-        ret = dma_map_sg(&host->pd->dev, sg, host->data->sg_len, DMA_FROM_DEVICE);
+        ret = dma_map_sg(chan->device->dev, sg, host->data->sg_len,
+                         DMA_FROM_DEVICE);
         if (ret > 0) {
-                host->dma_sglen = ret;
+                host->dma_active = true;
                 desc = chan->device->device_prep_slave_sg(chan, sg, ret,
                         DMA_FROM_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
         }
@@ -221,14 +224,9 @@ static void sh_mmcif_start_dma_rx(struct sh_mmcif_host *host)
         if (desc) {
                 desc->callback = mmcif_dma_complete;
                 desc->callback_param = host;
-                cookie = desc->tx_submit(desc);
-                if (cookie < 0) {
-                        desc = NULL;
-                        ret = cookie;
-                } else {
-                        sh_mmcif_bitset(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAREN);
-                        chan->device->device_issue_pending(chan);
-                }
+                cookie = dmaengine_submit(desc);
+                sh_mmcif_bitset(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAREN);
+                dma_async_issue_pending(chan);
         }
         dev_dbg(&host->pd->dev, "%s(): mapped %d -> %d, cookie %d\n",
                 __func__, host->data->sg_len, ret, cookie);
@@ -238,7 +236,7 @@ static void sh_mmcif_start_dma_rx(struct sh_mmcif_host *host)
                 if (ret >= 0)
                         ret = -EIO;
                 host->chan_rx = NULL;
-                host->dma_sglen = 0;
+                host->dma_active = false;
                 dma_release_channel(chan);
                 /* Free the Tx channel too */
                 chan = host->chan_tx;
@@ -263,9 +261,10 @@ static void sh_mmcif_start_dma_tx(struct sh_mmcif_host *host)
         dma_cookie_t cookie = -EINVAL;
         int ret;
 
-        ret = dma_map_sg(&host->pd->dev, sg, host->data->sg_len, DMA_TO_DEVICE);
+        ret = dma_map_sg(chan->device->dev, sg, host->data->sg_len,
+                         DMA_TO_DEVICE);
         if (ret > 0) {
-                host->dma_sglen = ret;
+                host->dma_active = true;
                 desc = chan->device->device_prep_slave_sg(chan, sg, ret,
                         DMA_TO_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
         }
@@ -273,14 +272,9 @@ static void sh_mmcif_start_dma_tx(struct sh_mmcif_host *host)
         if (desc) {
                 desc->callback = mmcif_dma_complete;
                 desc->callback_param = host;
-                cookie = desc->tx_submit(desc);
-                if (cookie < 0) {
-                        desc = NULL;
-                        ret = cookie;
-                } else {
-                        sh_mmcif_bitset(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAWEN);
-                        chan->device->device_issue_pending(chan);
-                }
+                cookie = dmaengine_submit(desc);
+                sh_mmcif_bitset(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAWEN);
+                dma_async_issue_pending(chan);
         }
         dev_dbg(&host->pd->dev, "%s(): mapped %d -> %d, cookie %d\n",
                 __func__, host->data->sg_len, ret, cookie);
@@ -290,7 +284,7 @@ static void sh_mmcif_start_dma_tx(struct sh_mmcif_host *host)
                 if (ret >= 0)
                         ret = -EIO;
                 host->chan_tx = NULL;
-                host->dma_sglen = 0;
+                host->dma_active = false;
                 dma_release_channel(chan);
                 /* Free the Rx channel too */
                 chan = host->chan_rx;
@@ -317,7 +311,7 @@ static bool sh_mmcif_filter(struct dma_chan *chan, void *arg)
 static void sh_mmcif_request_dma(struct sh_mmcif_host *host,
                                  struct sh_mmcif_plat_data *pdata)
 {
-        host->dma_sglen = 0;
+        host->dma_active = false;
 
         /* We can only either use DMA for both Tx and Rx or not use it at all */
         if (pdata->dma) {
@@ -364,7 +358,7 @@ static void sh_mmcif_release_dma(struct sh_mmcif_host *host)
                 dma_release_channel(chan);
         }
 
-        host->dma_sglen = 0;
+        host->dma_active = false;
 }
 
 static void sh_mmcif_clock_control(struct sh_mmcif_host *host, unsigned int clk)
@@ -753,7 +747,7 @@ static void sh_mmcif_start_cmd(struct sh_mmcif_host *host,
         }
         sh_mmcif_get_response(host, cmd);
         if (host->data) {
-                if (!host->dma_sglen) {
+                if (!host->dma_active) {
                         ret = sh_mmcif_data_trans(host, mrq, cmd->opcode);
                 } else {
                         long time =
@@ -765,7 +759,7 @@ static void sh_mmcif_start_cmd(struct sh_mmcif_host *host,
                                 ret = time;
                         sh_mmcif_bitclr(host, MMCIF_CE_BUF_ACC,
                                         BUF_ACC_DMAREN | BUF_ACC_DMAWEN);
-                        host->dma_sglen = 0;
+                        host->dma_active = false;
                 }
                 if (ret < 0)
                         mrq->data->bytes_xfered = 0;
@@ -850,15 +844,15 @@ static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
         struct sh_mmcif_host *host = mmc_priv(mmc);
         struct sh_mmcif_plat_data *p = host->pd->dev.platform_data;
 
-        if (ios->power_mode == MMC_POWER_OFF) {
+        if (ios->power_mode == MMC_POWER_UP) {
+                if (p->set_pwr)
+                        p->set_pwr(host->pd, ios->power_mode);
+        } else if (ios->power_mode == MMC_POWER_OFF || !ios->clock) {
                 /* clock stop */
                 sh_mmcif_clock_control(host, 0);
-                if (p->down_pwr)
+                if (ios->power_mode == MMC_POWER_OFF && p->down_pwr)
                         p->down_pwr(host->pd);
                 return;
-        } else if (ios->power_mode == MMC_POWER_UP) {
-                if (p->set_pwr)
-                        p->set_pwr(host->pd, ios->power_mode);
         }
 
         if (ios->clock)
diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c
index e3c6ef208391..ac52eb65395e 100644
--- a/drivers/mmc/host/tmio_mmc.c
+++ b/drivers/mmc/host/tmio_mmc.c
@@ -152,7 +152,6 @@ struct tmio_mmc_host {
         struct tasklet_struct   dma_complete;
         struct tasklet_struct   dma_issue;
 #ifdef CONFIG_TMIO_MMC_DMA
-        unsigned int            dma_sglen;
         u8                      bounce_buf[PAGE_CACHE_SIZE] __attribute__((aligned(MAX_ALIGN)));
         struct scatterlist      bounce_sg;
 #endif
@@ -220,44 +219,48 @@ static char *tmio_mmc_kmap_atomic(struct scatterlist *sg, unsigned long *flags)
         return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset;
 }
 
-static void tmio_mmc_kunmap_atomic(void *virt, unsigned long *flags)
+static void tmio_mmc_kunmap_atomic(struct scatterlist *sg, unsigned long *flags, void *virt)
 {
-        kunmap_atomic(virt, KM_BIO_SRC_IRQ);
+        kunmap_atomic(virt - sg->offset, KM_BIO_SRC_IRQ);
         local_irq_restore(*flags);
 }
 
 #ifdef CONFIG_MMC_DEBUG
 
-#define STATUS_TO_TEXT(a) \
+#define STATUS_TO_TEXT(a, status, i) \
         do { \
-                if (status & TMIO_STAT_##a) \
+                if (status & TMIO_STAT_##a) { \
+                        if (i++) \
+                                printk(" | "); \
                         printk(#a); \
+                } \
         } while (0)
 
 void pr_debug_status(u32 status)
 {
+        int i = 0;
         printk(KERN_DEBUG "status: %08x = ", status);
-        STATUS_TO_TEXT(CARD_REMOVE);
-        STATUS_TO_TEXT(CARD_INSERT);
-        STATUS_TO_TEXT(SIGSTATE);
-        STATUS_TO_TEXT(WRPROTECT);
-        STATUS_TO_TEXT(CARD_REMOVE_A);
-        STATUS_TO_TEXT(CARD_INSERT_A);
-        STATUS_TO_TEXT(SIGSTATE_A);
-        STATUS_TO_TEXT(CMD_IDX_ERR);
-        STATUS_TO_TEXT(STOPBIT_ERR);
-        STATUS_TO_TEXT(ILL_FUNC);
-        STATUS_TO_TEXT(CMD_BUSY);
-        STATUS_TO_TEXT(CMDRESPEND);
-        STATUS_TO_TEXT(DATAEND);
-        STATUS_TO_TEXT(CRCFAIL);
-        STATUS_TO_TEXT(DATATIMEOUT);
-        STATUS_TO_TEXT(CMDTIMEOUT);
-        STATUS_TO_TEXT(RXOVERFLOW);
-        STATUS_TO_TEXT(TXUNDERRUN);
-        STATUS_TO_TEXT(RXRDY);
-        STATUS_TO_TEXT(TXRQ);
-        STATUS_TO_TEXT(ILL_ACCESS);
+        STATUS_TO_TEXT(CARD_REMOVE, status, i);
+        STATUS_TO_TEXT(CARD_INSERT, status, i);
+        STATUS_TO_TEXT(SIGSTATE, status, i);
+        STATUS_TO_TEXT(WRPROTECT, status, i);
+        STATUS_TO_TEXT(CARD_REMOVE_A, status, i);
+        STATUS_TO_TEXT(CARD_INSERT_A, status, i);
+        STATUS_TO_TEXT(SIGSTATE_A, status, i);
+        STATUS_TO_TEXT(CMD_IDX_ERR, status, i);
+        STATUS_TO_TEXT(STOPBIT_ERR, status, i);
+        STATUS_TO_TEXT(ILL_FUNC, status, i);
+        STATUS_TO_TEXT(CMD_BUSY, status, i);
+        STATUS_TO_TEXT(CMDRESPEND, status, i);
+        STATUS_TO_TEXT(DATAEND, status, i);
+        STATUS_TO_TEXT(CRCFAIL, status, i);
+        STATUS_TO_TEXT(DATATIMEOUT, status, i);
+        STATUS_TO_TEXT(CMDTIMEOUT, status, i);
+        STATUS_TO_TEXT(RXOVERFLOW, status, i);
+        STATUS_TO_TEXT(TXUNDERRUN, status, i);
+        STATUS_TO_TEXT(RXRDY, status, i);
+        STATUS_TO_TEXT(TXRQ, status, i);
+        STATUS_TO_TEXT(ILL_ACCESS, status, i);
         printk("\n");
 }
 
@@ -507,7 +510,7 @@ static void tmio_mmc_pio_irq(struct tmio_mmc_host *host)
 
         host->sg_off += count;
 
-        tmio_mmc_kunmap_atomic(sg_virt, &flags);
+        tmio_mmc_kunmap_atomic(host->sg_ptr, &flags, sg_virt);
 
         if (host->sg_off == host->sg_ptr->length)
                 tmio_mmc_next_sg(host);
@@ -767,7 +770,7 @@ static void tmio_check_bounce_buffer(struct tmio_mmc_host *host)
                 unsigned long flags;
                 void *sg_vaddr = tmio_mmc_kmap_atomic(host->sg_orig, &flags);
                 memcpy(sg_vaddr, host->bounce_buf, host->bounce_sg.length);
-                tmio_mmc_kunmap_atomic(sg_vaddr, &flags);
+                tmio_mmc_kunmap_atomic(host->sg_orig, &flags, sg_vaddr);
         }
 }
 
@@ -825,23 +828,16 @@ static void tmio_mmc_start_dma_rx(struct tmio_mmc_host *host)
                 sg = host->sg_ptr;
         }
 
-        ret = dma_map_sg(&host->pdev->dev, sg, host->sg_len, DMA_FROM_DEVICE);
-        if (ret > 0) {
-                host->dma_sglen = ret;
+        ret = dma_map_sg(chan->device->dev, sg, host->sg_len, DMA_FROM_DEVICE);
+        if (ret > 0)
                 desc = chan->device->device_prep_slave_sg(chan, sg, ret,
                         DMA_FROM_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
-        }
 
         if (desc) {
                 desc->callback = tmio_dma_complete;
                 desc->callback_param = host;
-                cookie = desc->tx_submit(desc);
-                if (cookie < 0) {
-                        desc = NULL;
-                        ret = cookie;
-                } else {
-                        chan->device->device_issue_pending(chan);
-                }
+                cookie = dmaengine_submit(desc);
+                dma_async_issue_pending(chan);
         }
         dev_dbg(&host->pdev->dev, "%s(): mapped %d -> %d, cookie %d, rq %p\n",
                 __func__, host->sg_len, ret, cookie, host->mrq);
@@ -901,26 +897,20 @@ static void tmio_mmc_start_dma_tx(struct tmio_mmc_host *host)
                 void *sg_vaddr = tmio_mmc_kmap_atomic(sg, &flags);
                 sg_init_one(&host->bounce_sg, host->bounce_buf, sg->length);
                 memcpy(host->bounce_buf, sg_vaddr, host->bounce_sg.length);
-                tmio_mmc_kunmap_atomic(sg_vaddr, &flags);
+                tmio_mmc_kunmap_atomic(sg, &flags, sg_vaddr);
                 host->sg_ptr = &host->bounce_sg;
                 sg = host->sg_ptr;
         }
 
-        ret = dma_map_sg(&host->pdev->dev, sg, host->sg_len, DMA_TO_DEVICE);
-        if (ret > 0) {
-                host->dma_sglen = ret;
+        ret = dma_map_sg(chan->device->dev, sg, host->sg_len, DMA_TO_DEVICE);
+        if (ret > 0)
                 desc = chan->device->device_prep_slave_sg(chan, sg, ret,
                         DMA_TO_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
-        }
 
         if (desc) {
                 desc->callback = tmio_dma_complete;
                 desc->callback_param = host;
-                cookie = desc->tx_submit(desc);
-                if (cookie < 0) {
-                        desc = NULL;
-                        ret = cookie;
-                }
+                cookie = dmaengine_submit(desc);
         }
         dev_dbg(&host->pdev->dev, "%s(): mapped %d -> %d, cookie %d, rq %p\n",
                 __func__, host->sg_len, ret, cookie, host->mrq);
@@ -964,7 +954,7 @@ static void tmio_issue_tasklet_fn(unsigned long priv)
         struct tmio_mmc_host *host = (struct tmio_mmc_host *)priv;
         struct dma_chan *chan = host->chan_tx;
 
-        chan->device->device_issue_pending(chan);
+        dma_async_issue_pending(chan);
 }
 
 static void tmio_tasklet_fn(unsigned long arg)
@@ -978,10 +968,12 @@ static void tmio_tasklet_fn(unsigned long arg)
                 goto out;
 
         if (host->data->flags & MMC_DATA_READ)
-                dma_unmap_sg(&host->pdev->dev, host->sg_ptr, host->dma_sglen,
+                dma_unmap_sg(host->chan_rx->device->dev,
+                             host->sg_ptr, host->sg_len,
                              DMA_FROM_DEVICE);
         else
-                dma_unmap_sg(&host->pdev->dev, host->sg_ptr, host->dma_sglen,
+                dma_unmap_sg(host->chan_tx->device->dev,
+                             host->sg_ptr, host->sg_len,
                              DMA_TO_DEVICE);
 
         tmio_mmc_do_data_irq(host);
diff --git a/drivers/mmc/host/via-sdmmc.c b/drivers/mmc/host/via-sdmmc.c
index 9ed84ddb4780..8c5b4881ccd6 100644
--- a/drivers/mmc/host/via-sdmmc.c
+++ b/drivers/mmc/host/via-sdmmc.c
@@ -802,12 +802,9 @@ static const struct mmc_host_ops via_sdc_ops = {
 
 static void via_reset_pcictrl(struct via_crdr_mmc_host *host)
 {
-        void __iomem *addrbase;
         unsigned long flags;
         u8 gatt;
 
-        addrbase = host->pcictrl_mmiobase;
-
         spin_lock_irqsave(&host->lock, flags);
 
         via_save_pcictrlreg(host);