[U-Boot] [PATCH 2/4] MMC: EXYNOS: Added call back function for clock get

[Amar]

This patch defines the call back required by dw mmc driver to get the
clock value. It also adds function to set the dw mmc clock divider ratio.

Signed-off-by: Amarendra Reddy <amarendra.xt at samsung.com>
---
 drivers/mmc/exynos_dw_mmc.c |   14 +++++++++++++-
 1 files changed, 13 insertions(+), 1 deletions(-)

diff --git a/drivers/mmc/exynos_dw_mmc.c b/drivers/mmc/exynos_dw_mmc.c
index 72a31b7..7cc8aba 100644
--- a/drivers/mmc/exynos_dw_mmc.c
+++ b/drivers/mmc/exynos_dw_mmc.c
@@ -30,25 +30,37 @@ static void exynos_dwmci_clksel(struct dwmci_host *host)
 {
 	u32 val;
 	val = DWMCI_SET_SAMPLE_CLK(DWMCI_SHIFT_0) |
-		DWMCI_SET_DRV_CLK(DWMCI_SHIFT_0) | DWMCI_SET_DIV_RATIO(0);
+		DWMCI_SET_DRV_CLK(DWMCI_SHIFT_0) |
+		DWMCI_SET_DIV_RATIO(DWMCI_SHIFT_0);
 
 	dwmci_writel(host, DWMCI_CLKSEL, val);
 }
 
+unsigned int exynos_dwmci_get_clk(int dev_index)
+{
+	return get_mmc_clk(dev_index);
+}
+
 int exynos_dwmci_init(u32 regbase, int bus_width, int index)
 {
 	struct dwmci_host *host = NULL;
+	int div = 0;
 	host = malloc(sizeof(struct dwmci_host));
 	if (!host) {
 		printf("dwmci_host malloc fail!\n");
 		return 1;
 	}
 
+	div = 1;
+	/* Set the mmc clock divider ratio & pre-ratio */
+	set_mmc_clk(index, div);
+
 	host->name = EXYNOS_NAME;
 	host->ioaddr = (void *)regbase;
 	host->buswidth = bus_width;
 	host->clksel = exynos_dwmci_clksel;
 	host->dev_index = index;
+	host->mmc_clk = exynos_dwmci_get_clk;
 
 	add_dwmci(host, 52000000, 400000);
 
-- 
1.7.0.4