1 files changed, 45 insertions, 16 deletions

diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c
index 1654a3330340..1ea8482037bb 100644
--- a/drivers/mmc/host/pxamci.c
+++ b/drivers/mmc/host/pxamci.c
@@ -65,6 +65,8 @@ struct pxamci_host {
         unsigned int            dma_len;
 
         unsigned int            dma_dir;
+        unsigned int            dma_drcmrrx;
+        unsigned int            dma_drcmrtx;
 };
 
 static void pxamci_stop_clock(struct pxamci_host *host)
@@ -131,13 +133,13 @@ static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data)
         if (data->flags & MMC_DATA_READ) {
                 host->dma_dir = DMA_FROM_DEVICE;
                 dcmd = DCMD_INCTRGADDR | DCMD_FLOWTRG;
-                DRCMRTXMMC = 0;
-                DRCMRRXMMC = host->dma | DRCMR_MAPVLD;
+                DRCMR(host->dma_drcmrtx) = 0;
+                DRCMR(host->dma_drcmrrx) = host->dma | DRCMR_MAPVLD;
         } else {
                 host->dma_dir = DMA_TO_DEVICE;
                 dcmd = DCMD_INCSRCADDR | DCMD_FLOWSRC;
-                DRCMRRXMMC = 0;
-                DRCMRTXMMC = host->dma | DRCMR_MAPVLD;
+                DRCMR(host->dma_drcmrrx) = 0;
+                DRCMR(host->dma_drcmrtx) = host->dma | DRCMR_MAPVLD;
         }
 
         dcmd |= DCMD_BURST32 | DCMD_WIDTH1;
@@ -375,14 +377,23 @@ static void pxamci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
                 if (host->clkrt == CLKRT_OFF)
                         clk_enable(host->clk);
 
-                /*
-                 * clk might result in a lower divisor than we
-                 * desire.  check for that condition and adjust
-                 * as appropriate.
-                 */
-                if (rate / clk > ios->clock)
-                        clk <<= 1;
-                host->clkrt = fls(clk) - 1;
+                if (ios->clock == 26000000) {
+                        /* to support 26MHz on pxa300/pxa310 */
+                        host->clkrt = 7;
+                } else {
+                        /* to handle (19.5MHz, 26MHz) */
+                        if (!clk)
+                                clk = 1;
+
+                        /*
+                         * clk might result in a lower divisor than we
+                         * desire.  check for that condition and adjust
+                         * as appropriate.
+                         */
+                        if (rate / clk > ios->clock)
+                                clk <<= 1;
+                        host->clkrt = fls(clk) - 1;
+                }
 
                 /*
                  * we write clkrt on the next command
@@ -459,7 +470,7 @@ static int pxamci_probe(struct platform_device *pdev)
 {
         struct mmc_host *mmc;
         struct pxamci_host *host = NULL;
-        struct resource *r;
+        struct resource *r, *dmarx, *dmatx;
         int ret, irq;
 
         r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -519,7 +530,8 @@ static int pxamci_probe(struct platform_device *pdev)
          * Calculate minimum clock rate, rounding up.
          */
         mmc->f_min = (host->clkrate + 63) / 64;
-        mmc->f_max = host->clkrate;
+        mmc->f_max = (cpu_is_pxa300() || cpu_is_pxa310()) ? 26000000
+                                                          : host->clkrate;
 
         mmc->ocr_avail = host->pdata ?
                          host->pdata->ocr_mask :
@@ -529,6 +541,9 @@ static int pxamci_probe(struct platform_device *pdev)
         if (!cpu_is_pxa21x() && !cpu_is_pxa25x()) {
                 mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ;
                 host->cmdat |= CMDAT_SDIO_INT_EN;
+                if (cpu_is_pxa300() || cpu_is_pxa310())
+                        mmc->caps |= MMC_CAP_MMC_HIGHSPEED |
+                                     MMC_CAP_SD_HIGHSPEED;
         }
 
         host->sg_cpu = dma_alloc_coherent(&pdev->dev, PAGE_SIZE, &host->sg_dma, GFP_KERNEL);
@@ -570,6 +585,20 @@ static int pxamci_probe(struct platform_device *pdev)
 
         platform_set_drvdata(pdev, mmc);
 
+        dmarx = platform_get_resource(pdev, IORESOURCE_DMA, 0);
+        if (!dmarx) {
+                ret = -ENXIO;
+                goto out;
+        }
+        host->dma_drcmrrx = dmarx->start;
+
+        dmatx = platform_get_resource(pdev, IORESOURCE_DMA, 1);
+        if (!dmatx) {
+                ret = -ENXIO;
+                goto out;
+        }
+        host->dma_drcmrtx = dmatx->start;
+
         if (host->pdata && host->pdata->init)
                 host->pdata->init(&pdev->dev, pxamci_detect_irq, mmc);
 
@@ -613,8 +642,8 @@ static int pxamci_remove(struct platform_device *pdev)
                        END_CMD_RES|PRG_DONE|DATA_TRAN_DONE,
                        host->base + MMC_I_MASK);
 
-                DRCMRRXMMC = 0;
-                DRCMRTXMMC = 0;
+                DRCMR(host->dma_drcmrrx) = 0;
+                DRCMR(host->dma_drcmrtx) = 0;
 
                 free_irq(host->irq, host);
                 pxa_free_dma(host->dma);