Merge branch 'for-linus' of git://codeaurora.org/quic/kernel/davidb/linux-msm

* 'for-linus' of git://codeaurora.org/quic/kernel/davidb/linux-msm: (35 commits)
  mmc: msm_sdcc: Check for only DATA_END interrupt to end a request
  mmc: msm_sdcc: Fix bug in PIO mode when data size is not word aligned
  mmc: msm_sdcc: Reset SDCC in case of data transfer errors
  mmc: msm_sdcc: Add prog done interrupt support
  mmc: msm_sdcc: Fix possible circular locking dependency warning
  MSM: Add USB support for MSM7x30
  MSM: Add USB suport for QSD8x50
  msm: initial framebuffer support
  msm: add handling for clocks tagged as CLK_MINMAX
  msm: trout: change name of pmdh_clk to mddi_clk
  msm: add CLK_MINMAX to pmdh_clk
  msm: trout: add gpio_to_irq
  msm: iommu: Use the correct memory allocation flag
  msm_serial: Remove redundant unlikely()
  msm: iommu: Miscellaneous code cleanup
  msm: iommu: Support cache-coherent memory access
  msm: iommu: Definitions for extended memory attributes
  msm: iommu: Kconfig dependency for the IOMMU API
  msm: iommu: Check if device is already attached
  msm: iommu: Kconfig item for cacheable page tables
  ...

2 files changed, 113 insertions, 34 deletions

diff --git a/drivers/mmc/host/msm_sdcc.c b/drivers/mmc/host/msm_sdcc.c
index 1290d14c5839..5decfd0bd61d 100644
--- a/drivers/mmc/host/msm_sdcc.c
+++ b/drivers/mmc/host/msm_sdcc.c
@@ -44,6 +44,7 @@
 #include <mach/mmc.h>
 #include <mach/msm_iomap.h>
 #include <mach/dma.h>
+#include <mach/clk.h>
 
 #include "msm_sdcc.h"
 
@@ -126,6 +127,40 @@ static void
 msmsdcc_start_command(struct msmsdcc_host *host, struct mmc_command *cmd,
                       u32 c);
 
+static void msmsdcc_reset_and_restore(struct msmsdcc_host *host)
+{
+        u32     mci_clk = 0;
+        u32     mci_mask0 = 0;
+        int     ret = 0;
+
+        /* Save the controller state */
+        mci_clk = readl(host->base + MMCICLOCK);
+        mci_mask0 = readl(host->base + MMCIMASK0);
+
+        /* Reset the controller */
+        ret = clk_reset(host->clk, CLK_RESET_ASSERT);
+        if (ret)
+                pr_err("%s: Clock assert failed at %u Hz with err %d\n",
+                                mmc_hostname(host->mmc), host->clk_rate, ret);
+
+        ret = clk_reset(host->clk, CLK_RESET_DEASSERT);
+        if (ret)
+                pr_err("%s: Clock deassert failed at %u Hz with err %d\n",
+                                mmc_hostname(host->mmc), host->clk_rate, ret);
+
+        pr_info("%s: Controller has been re-initialiazed\n",
+                        mmc_hostname(host->mmc));
+
+        /* Restore the contoller state */
+        writel(host->pwr, host->base + MMCIPOWER);
+        writel(mci_clk, host->base + MMCICLOCK);
+        writel(mci_mask0, host->base + MMCIMASK0);
+        ret = clk_set_rate(host->clk, host->clk_rate);
+        if (ret)
+                pr_err("%s: Failed to set clk rate %u Hz (%d)\n",
+                                mmc_hostname(host->mmc), host->clk_rate, ret);
+}
+
 static void
 msmsdcc_request_end(struct msmsdcc_host *host, struct mmc_request *mrq)
 {
@@ -155,7 +190,7 @@ static void
 msmsdcc_stop_data(struct msmsdcc_host *host)
 {
         host->curr.data = NULL;
-        host->curr.got_dataend = host->curr.got_datablkend = 0;
+        host->curr.got_dataend = 0;
 }
 
 uint32_t msmsdcc_fifo_addr(struct msmsdcc_host *host)
@@ -189,42 +224,42 @@ msmsdcc_dma_exec_func(struct msm_dmov_cmd *cmd)
 }
 
 static void
-msmsdcc_dma_complete_func(struct msm_dmov_cmd *cmd,
-                          unsigned int result,
-                          struct msm_dmov_errdata *err)
+msmsdcc_dma_complete_tlet(unsigned long data)
 {
-        struct msmsdcc_dma_data *dma_data =
-                container_of(cmd, struct msmsdcc_dma_data, hdr);
-        struct msmsdcc_host     *host = dma_data->host;
+        struct msmsdcc_host *host = (struct msmsdcc_host *)data;
         unsigned long           flags;
         struct mmc_request      *mrq;
+        struct msm_dmov_errdata err;
 
         spin_lock_irqsave(&host->lock, flags);
         host->dma.active = 0;
 
+        err = host->dma.err;
         mrq = host->curr.mrq;
         BUG_ON(!mrq);
         WARN_ON(!mrq->data);
 
-        if (!(result & DMOV_RSLT_VALID)) {
+        if (!(host->dma.result & DMOV_RSLT_VALID)) {
                 pr_err("msmsdcc: Invalid DataMover result\n");
                 goto out;
         }
 
-        if (result & DMOV_RSLT_DONE) {
+        if (host->dma.result & DMOV_RSLT_DONE) {
                 host->curr.data_xfered = host->curr.xfer_size;
         } else {
                 /* Error or flush  */
-                if (result & DMOV_RSLT_ERROR)
+                if (host->dma.result & DMOV_RSLT_ERROR)
                         pr_err("%s: DMA error (0x%.8x)\n",
-                               mmc_hostname(host->mmc), result);
-                if (result & DMOV_RSLT_FLUSH)
+                               mmc_hostname(host->mmc), host->dma.result);
+                if (host->dma.result & DMOV_RSLT_FLUSH)
                         pr_err("%s: DMA channel flushed (0x%.8x)\n",
-                               mmc_hostname(host->mmc), result);
-                if (err)
-                        pr_err("Flush data: %.8x %.8x %.8x %.8x %.8x %.8x\n",
-                               err->flush[0], err->flush[1], err->flush[2],
-                               err->flush[3], err->flush[4], err->flush[5]);
+                               mmc_hostname(host->mmc), host->dma.result);
+
+                pr_err("Flush data: %.8x %.8x %.8x %.8x %.8x %.8x\n",
+                       err.flush[0], err.flush[1], err.flush[2],
+                       err.flush[3], err.flush[4], err.flush[5]);
+
+                msmsdcc_reset_and_restore(host);
                 if (!mrq->data->error)
                         mrq->data->error = -EIO;
         }
@@ -242,8 +277,7 @@ msmsdcc_dma_complete_func(struct msm_dmov_cmd *cmd,
         host->dma.sg = NULL;
         host->dma.busy = 0;
 
-        if ((host->curr.got_dataend && host->curr.got_datablkend)
-             || mrq->data->error) {
+        if (host->curr.got_dataend || mrq->data->error) {
 
                 /*
                  * If we've already gotten our DATAEND / DATABLKEND
@@ -273,6 +307,22 @@ out:
         return;
 }
 
+static void
+msmsdcc_dma_complete_func(struct msm_dmov_cmd *cmd,
+                          unsigned int result,
+                          struct msm_dmov_errdata *err)
+{
+        struct msmsdcc_dma_data *dma_data =
+                container_of(cmd, struct msmsdcc_dma_data, hdr);
+        struct msmsdcc_host *host = dma_data->host;
+
+        dma_data->result = result;
+        if (err)
+                memcpy(&dma_data->err, err, sizeof(struct msm_dmov_errdata));
+
+        tasklet_schedule(&host->dma_tlet);
+}
+
 static int validate_dma(struct msmsdcc_host *host, struct mmc_data *data)
 {
         if (host->dma.channel == -1)
@@ -424,6 +474,11 @@ msmsdcc_start_command_deferred(struct msmsdcc_host *host,
               (cmd->opcode == 53))
                 *c |= MCI_CSPM_DATCMD;
 
+        if (host->prog_scan && (cmd->opcode == 12)) {
+                *c |= MCI_CPSM_PROGENA;
+                host->prog_enable = true;
+        }
+
         if (cmd == cmd->mrq->stop)
                 *c |= MCI_CSPM_MCIABORT;
 
@@ -450,7 +505,6 @@ msmsdcc_start_data(struct msmsdcc_host *host, struct mmc_data *data,
         host->curr.xfer_remain = host->curr.xfer_size;
         host->curr.data_xfered = 0;
         host->curr.got_dataend = 0;
-        host->curr.got_datablkend = 0;
 
         memset(&host->pio, 0, sizeof(host->pio));
 
@@ -494,6 +548,8 @@ msmsdcc_start_data(struct msmsdcc_host *host, struct mmc_data *data,
                         host->cmd_c = c;
                 }
                 msm_dmov_enqueue_cmd(host->dma.channel, &host->dma.hdr);
+                if (data->flags & MMC_DATA_WRITE)
+                        host->prog_scan = true;
         } else {
                 msmsdcc_writel(host, timeout, MMCIDATATIMER);
 
@@ -555,6 +611,9 @@ msmsdcc_pio_read(struct msmsdcc_host *host, char *buffer, unsigned int remain)
         uint32_t        *ptr = (uint32_t *) buffer;
         int             count = 0;
 
+        if (remain % 4)
+                remain = ((remain >> 2) + 1) << 2;
+
         while (msmsdcc_readl(host, MMCISTATUS) & MCI_RXDATAAVLBL) {
                 *ptr = msmsdcc_readl(host, MMCIFIFO + (count % MCI_FIFOSIZE));
                 ptr++;
@@ -575,13 +634,14 @@ msmsdcc_pio_write(struct msmsdcc_host *host, char *buffer,
         char *ptr = buffer;
 
         do {
-                unsigned int count, maxcnt;
+                unsigned int count, maxcnt, sz;
 
                 maxcnt = status & MCI_TXFIFOEMPTY ? MCI_FIFOSIZE :
                                                     MCI_FIFOHALFSIZE;
                 count = min(remain, maxcnt);
 
-                writesl(base + MMCIFIFO, ptr, count >> 2);
+                sz = count % 4 ? (count >> 2) + 1 : (count >> 2);
+                writesl(base + MMCIFIFO, ptr, sz);
                 ptr += count;
                 remain -= count;
 
@@ -702,10 +762,26 @@ static void msmsdcc_do_cmdirq(struct msmsdcc_host *host, uint32_t status)
                         msm_dmov_stop_cmd(host->dma.channel,
                                           &host->dma.hdr, 0);
                 else if (host->curr.data) { /* Non DMA */
+                        msmsdcc_reset_and_restore(host);
                         msmsdcc_stop_data(host);
                         msmsdcc_request_end(host, cmd->mrq);
-                } else /* host->data == NULL */
-                        msmsdcc_request_end(host, cmd->mrq);
+                } else { /* host->data == NULL */
+                        if (!cmd->error && host->prog_enable) {
+                                if (status & MCI_PROGDONE) {
+                                        host->prog_scan = false;
+                                        host->prog_enable = false;
+                                        msmsdcc_request_end(host, cmd->mrq);
+                                } else {
+                                        host->curr.cmd = cmd;
+                                }
+                        } else {
+                                if (host->prog_enable) {
+                                        host->prog_scan = false;
+                                        host->prog_enable = false;
+                                }
+                                msmsdcc_request_end(host, cmd->mrq);
+                        }
+                }
         } else if (cmd->data)
                 if (!(cmd->data->flags & MMC_DATA_READ))
                         msmsdcc_start_data(host, cmd->data,
@@ -719,7 +795,7 @@ msmsdcc_handle_irq_data(struct msmsdcc_host *host, u32 status,
         struct mmc_data *data = host->curr.data;
 
         if (status & (MCI_CMDSENT | MCI_CMDRESPEND | MCI_CMDCRCFAIL |
-                      MCI_CMDTIMEOUT) && host->curr.cmd) {
+                        MCI_CMDTIMEOUT | MCI_PROGDONE) && host->curr.cmd) {
                 msmsdcc_do_cmdirq(host, status);
         }
 
@@ -735,6 +811,7 @@ msmsdcc_handle_irq_data(struct msmsdcc_host *host, u32 status,
                         msm_dmov_stop_cmd(host->dma.channel,
                                           &host->dma.hdr, 0);
                 else {
+                        msmsdcc_reset_and_restore(host);
                         if (host->curr.data)
                                 msmsdcc_stop_data(host);
                         if (!data->stop)
@@ -748,14 +825,10 @@ msmsdcc_handle_irq_data(struct msmsdcc_host *host, u32 status,
         if (!host->curr.got_dataend && (status & MCI_DATAEND))
                 host->curr.got_dataend = 1;
 
-        if (!host->curr.got_datablkend && (status & MCI_DATABLOCKEND))
-                host->curr.got_datablkend = 1;
-
         /*
          * If DMA is still in progress, we complete via the completion handler
          */
-        if (host->curr.got_dataend && host->curr.got_datablkend &&
-            !host->dma.busy) {
+        if (host->curr.got_dataend && !host->dma.busy) {
                 /*
                  * There appears to be an issue in the controller where
                  * if you request a small block transfer (< fifo size),
@@ -792,8 +865,7 @@ msmsdcc_irq(int irq, void *dev_id)
 
         do {
                 status = msmsdcc_readl(host, MMCISTATUS);
-                status &= (msmsdcc_readl(host, MMCIMASK0) |
-                                              MCI_DATABLOCKENDMASK);
+                status &= msmsdcc_readl(host, MMCIMASK0);
                 msmsdcc_writel(host, status, MMCICLEAR);
 
                 if (status & MCI_SDIOINTR)
@@ -1118,6 +1190,9 @@ msmsdcc_probe(struct platform_device *pdev)
         host->dmares = dmares;
         spin_lock_init(&host->lock);
 
+        tasklet_init(&host->dma_tlet, msmsdcc_dma_complete_tlet,
+                        (unsigned long)host);
+
         /*
          * Setup DMA
          */
diff --git a/drivers/mmc/host/msm_sdcc.h b/drivers/mmc/host/msm_sdcc.h
index ff2b0f74f6f4..939557af266d 100644
--- a/drivers/mmc/host/msm_sdcc.h
+++ b/drivers/mmc/host/msm_sdcc.h
@@ -138,7 +138,7 @@
 #define MCI_IRQENABLE   \
         (MCI_CMDCRCFAILMASK|MCI_DATACRCFAILMASK|MCI_CMDTIMEOUTMASK|     \
         MCI_DATATIMEOUTMASK|MCI_TXUNDERRUNMASK|MCI_RXOVERRUNMASK|       \
-        MCI_CMDRESPENDMASK|MCI_CMDSENTMASK|MCI_DATAENDMASK)
+        MCI_CMDRESPENDMASK|MCI_CMDSENTMASK|MCI_DATAENDMASK|MCI_PROGDONEMASK)
 
 /*
  * The size of the FIFO in bytes.
@@ -172,6 +172,8 @@ struct msmsdcc_dma_data {
         struct msmsdcc_host             *host;
         int                             busy; /* Set if DM is busy */
         int                             active;
+        unsigned int                    result;
+        struct msm_dmov_errdata         err;
 };
 
 struct msmsdcc_pio_data {
@@ -188,7 +190,6 @@ struct msmsdcc_curr_req {
         unsigned int            xfer_remain;    /* Bytes remaining to send */
         unsigned int            data_xfered;    /* Bytes acked by BLKEND irq */
         int                     got_dataend;
-        int                     got_datablkend;
         int                     user_pages;
 };
 
@@ -235,6 +236,7 @@ struct msmsdcc_host {
         int                     cmdpoll;
         struct msmsdcc_stats    stats;
 
+        struct tasklet_struct   dma_tlet;
         /* Command parameters */
         unsigned int            cmd_timeout;
         unsigned int            cmd_pio_irqmask;
@@ -242,6 +244,8 @@ struct msmsdcc_host {
         struct mmc_command      *cmd_cmd;
         u32                     cmd_c;
 
+        bool prog_scan;
+        bool prog_enable;
 };
 
 #endif