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;
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