[ARM] 4711/1: pxa: mmc: move DMA specific code to platform layer

This patch is to move pxamci DMA specific code to corresponding
platform layer because using DRCMRRXMMC/DRCMRTXMMC in pxamci.c makes
the driver code dedicated to platform which is not extensible.

It is applicable to all pxa platforms.

Signed-off-by: Bridge Wu <bridge.wu@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 23 insertions, 7 deletions

diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c
index 80df4b047c81..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;
@@ -468,7 +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);
@@ -583,6 +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);
 
@@ -626,8 +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);