From e36bd9c6c99f47902d6fd6804730aa587ae275a0 Mon Sep 17 00:00:00 2001 From: Ulf Hansson Date: Wed, 4 Sep 2013 09:00:37 +0100 Subject: [PATCH] ARM: 7832/1: mmc: mmci: Use optional sleep pinctrl state By optionally putting the pins into sleep state in the .runtime_suspend callback we can accomplish two things. One is to minimize current leakage from pins and thus save power, second we can prevent the IP from driving pins output in an uncontrolled manner, which may happen if the power domain drops the domain regulator. When returning from idle, entering .runtime_resume callback, the pins are restored to default state. Signed-off-by: Ulf Hansson Acked-by: Rickard Andersson Reviewed-by: Linus Walleij Signed-off-by: Russell King --- drivers/mmc/host/mmci.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index 5dffbbd57663..c550b3ebb635 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -1750,6 +1750,7 @@ static int mmci_runtime_suspend(struct device *dev) if (mmc) { struct mmci_host *host = mmc_priv(mmc); + pinctrl_pm_select_sleep_state(dev); clk_disable_unprepare(host->clk); } @@ -1764,6 +1765,7 @@ static int mmci_runtime_resume(struct device *dev) if (mmc) { struct mmci_host *host = mmc_priv(mmc); clk_prepare_enable(host->clk); + pinctrl_pm_select_default_state(dev); } return 0; -- 2.34.1