mmc: dw_mmc: Add support for SOCFPGA's platform specific implementation

Like the rockchip, Altera's SOCFPGA platform specific implementation of the
dw_mmc driver requires using the HOLD register for SD commands. This patch
renames dw_mci_rockchip_prepare_command to dw_mci_pltfm_prepare_command so
that SOCFPGA and Rockchip can use it.

Signed-off-by: Dinh Nguyen <dinguyen@altera.com>
Acked-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Tested-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Chris Ball <chris@printf.net>

1 files changed, 8 insertions, 2 deletions

diff --git a/drivers/mmc/host/dw_mmc-pltfm.c b/drivers/mmc/host/dw_mmc-pltfm.c
index 2553bfbfc6df..d4a47a9f5584 100644
--- a/drivers/mmc/host/dw_mmc-pltfm.c
+++ b/drivers/mmc/host/dw_mmc-pltfm.c
@@ -25,13 +25,17 @@
 #include "dw_mmc.h"
 #include "dw_mmc-pltfm.h"
 
-static void dw_mci_rockchip_prepare_command(struct dw_mci *host, u32 *cmdr)
+static void dw_mci_pltfm_prepare_command(struct dw_mci *host, u32 *cmdr)
 {
         *cmdr |= SDMMC_CMD_USE_HOLD_REG;
 }
 
 static const struct dw_mci_drv_data rockchip_drv_data = {
-        .prepare_command        = dw_mci_rockchip_prepare_command,
+        .prepare_command        = dw_mci_pltfm_prepare_command,
+};
+
+static const struct dw_mci_drv_data socfpga_drv_data = {
+        .prepare_command        = dw_mci_pltfm_prepare_command,
 };
 
 int dw_mci_pltfm_register(struct platform_device *pdev,
@@ -92,6 +96,8 @@ static const struct of_device_id dw_mci_pltfm_match[] = {
         { .compatible = "snps,dw-mshc", },
         { .compatible = "rockchip,rk2928-dw-mshc",
                 .data = &rockchip_drv_data },
+        { .compatible = "altr,socfpga-dw-mshc",
+                .data = &socfpga_drv_data },
         {},
 };
 MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match);