mmc: sd_sdhi: Enable clock using clock framework

Since we now have clock driver for the RCar Gen3 , add support for
enabling the clock into the SH SDHI driver to prevent hacks in the
board files.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

diff --git a/drivers/mmc/sh_sdhi.c b/drivers/mmc/sh_sdhi.c
index 3c5616e5075c30cbc95b98778e1c0d7a22db1137..eef061abb2de49634e9dea648022f7fb2b1e3fee 100644 (file)
--- a/drivers/mmc/sh_sdhi.c
+++ b/drivers/mmc/sh_sdhi.c
@@ -20,6 +20,7 @@
 #include <linux/sizes.h>
 #include <asm/arch/rmobile.h>
 #include <asm/arch/sh_sdhi.h>
+#include <clk.h>
 
 #define DRIVER_NAME "sh-sdhi"
 
@@ -824,8 +825,10 @@ static int sh_sdhi_dm_probe(struct udevice *dev)
        struct sh_sdhi_plat *plat = dev_get_platdata(dev);
        struct sh_sdhi_host *host = dev_get_priv(dev);
        struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
+       struct clk sh_sdhi_clk;
        const u32 quirks = dev_get_driver_data(dev);
        fdt_addr_t base;
+       int ret;
 
        base = devfdt_get_addr(dev);
        if (base == FDT_ADDR_T_NONE)
@@ -835,6 +838,18 @@ static int sh_sdhi_dm_probe(struct udevice *dev)
        if (!host->addr)
                return -ENOMEM;
 
+       ret = clk_get_by_index(dev, 0, &sh_sdhi_clk);
+       if (ret) {
+               debug("failed to get clock, ret=%d\n", ret);
+               return ret;
+       }
+
+       ret = clk_enable(&sh_sdhi_clk);
+       if (ret) {
+               debug("failed to enable clock, ret=%d\n", ret);
+               return ret;
+       }
+
        host->quirks = quirks;
 
        if (host->quirks & SH_SDHI_QUIRK_64BIT_BUF)