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mmc: pwrseq_simple: select pinctrl state during suspend/resume 

To support suspend/resume from LPSR mode, we need to select default
pinctrl state in resume, so that IOMUXC settings can be restored from
power losing.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
5.4-rM2-2.2.x-imx-deep-sleep
Shawn Guo 2019-09-09 10:57:12 +08:00 committed by Alistair Francis
parent 34906fc690
commit 991d5b4eda
1 changed files with 19 additions and 0 deletions
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19
drivers/mmc/core/pwrseq_simple.c
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@ -15,6 +15,7 @@
#include <linux/device.h>
#include <linux/err.h>
#include <linux/gpio/consumer.h>
#include <linux/pinctrl/consumer.h>
#include <linux/delay.h>
#include <linux/property.h>
@ -151,12 +152,30 @@ static int mmc_pwrseq_simple_remove(struct platform_device *pdev)
return 0;
}
static int mmc_pwrseq_simple_suspend(struct device *dev)
{
pinctrl_pm_select_sleep_state(dev);
return 0;
}
static int mmc_pwrseq_simple_resume(struct device *dev)
{
pinctrl_pm_select_default_state(dev);
return 0;
}
SIMPLE_DEV_PM_OPS(mmc_pwrseq_simple_pm_ops, mmc_pwrseq_simple_suspend,
mmc_pwrseq_simple_resume);
static struct platform_driver mmc_pwrseq_simple_driver = {
.probe = mmc_pwrseq_simple_probe,
.remove = mmc_pwrseq_simple_remove,
.driver = {
.name = "pwrseq_simple",
.of_match_table = mmc_pwrseq_simple_of_match,
.pm = &mmc_pwrseq_simple_pm_ops,
},
};