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

Amar
2012-12-05T13:31:35Z

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@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