mmc: omap_hsmmc: use platform_get_resource_byname for tx/rx DMA channels

Git rid of hardcoded tx/rx DMA channels based on pdev->id
and use platform_get_resource_byname() to retrieve them
instead.

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Tested-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

1 files changed, 11 insertions, 24 deletions

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 36e7f5bc58a3..a6f19f17f0d8 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1981,32 +1981,19 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
 
         omap_hsmmc_conf_bus_power(host);
 
-        /* Select DMA lines */
-        switch (host->id) {
-        case OMAP_MMC1_DEVID:
-                host->dma_line_tx = OMAP24XX_DMA_MMC1_TX;
-                host->dma_line_rx = OMAP24XX_DMA_MMC1_RX;
-                break;
-        case OMAP_MMC2_DEVID:
-                host->dma_line_tx = OMAP24XX_DMA_MMC2_TX;
-                host->dma_line_rx = OMAP24XX_DMA_MMC2_RX;
-                break;
-        case OMAP_MMC3_DEVID:
-                host->dma_line_tx = OMAP34XX_DMA_MMC3_TX;
-                host->dma_line_rx = OMAP34XX_DMA_MMC3_RX;
-                break;
-        case OMAP_MMC4_DEVID:
-                host->dma_line_tx = OMAP44XX_DMA_MMC4_TX;
-                host->dma_line_rx = OMAP44XX_DMA_MMC4_RX;
-                break;
-        case OMAP_MMC5_DEVID:
-                host->dma_line_tx = OMAP44XX_DMA_MMC5_TX;
-                host->dma_line_rx = OMAP44XX_DMA_MMC5_RX;
-                break;
-        default:
-                dev_err(mmc_dev(host->mmc), "Invalid MMC id\n");
+        res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx");
+        if (!res) {
+                dev_err(mmc_dev(host->mmc), "cannot get DMA TX channel\n");
+                goto err_irq;
+        }
+        host->dma_line_tx = res->start;
+
+        res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
+        if (!res) {
+                dev_err(mmc_dev(host->mmc), "cannot get DMA RX channel\n");
                 goto err_irq;
         }
+        host->dma_line_rx = res->start;
 
         /* Request IRQ for MMC operations */
         ret = request_irq(host->irq, omap_hsmmc_irq, 0,