On 04/30/2015 03:31 PM, Ben Hutchings wrote:
From: Shinobu Uehara <shinobu.uehara.xc@xxxxxxxxxxx>
It is necessary to stop the SD clock before using
the actual clock in case of SDHI controller.
Signed-off-by: Shinobu Uehara <shinobu.uehara.xc@xxxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben.hutchings@xxxxxxxxxxxxxxx>
---
drivers/mmc/host/sh_mobile_sdhi.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c
index 6906a905cd54..92a58c6007fe 100644
--- a/drivers/mmc/host/sh_mobile_sdhi.c
+++ b/drivers/mmc/host/sh_mobile_sdhi.c
@@ -136,6 +136,18 @@ static void sh_mobile_sdhi_clk_disable(struct platform_device *pdev)
clk_disable_unprepare(priv->clk);
}
+static void sh_mobile_sdhi_set_clk_div(struct platform_device *pdev, int clk)
+{
+ struct mmc_host *mmc = dev_get_drvdata(&pdev->dev);
+ struct tmio_mmc_host *host = mmc_priv(mmc);
+
+ if (clk == true) {
'clk' is *int*. Perhaps, should be just *if* (clk)?
+ sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, ~0x0100 &
+ sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL));
+ sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, 0x00ff);
+ }
+}
+
static int sh_mobile_sdhi_wait_idle(struct tmio_mmc_host *host)
{
int timeout = 1000;
[...]
WBR, Sergei
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