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pinctrl: imx8mq: Add suspend/resume ops

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To support pinctl hog restore after LPSR resume back,
add the generic suspend/resume in pinctrl-imx along with the
generic pm ops to be used by platform specific drivers. Then
make use of the newly added ops in i.MX8MQ platform specific
driver.

Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Acked-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Abel Vesa 2019-04-08 18:38:31 +00:00 committed by Linus Walleij
parent 21989587f6
commit 855811eaeb
3 changed files with 21 additions and 0 deletions
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19
drivers/pinctrl/freescale/pinctrl-imx.c
View File

@ -885,3 +885,22 @@ int imx_pinctrl_probe(struct platform_device *pdev,
return ret;
}
static int __maybe_unused imx_pinctrl_suspend(struct device *dev)
{
struct imx_pinctrl *ipctl = dev_get_drvdata(dev);
return pinctrl_force_sleep(ipctl->pctl);
}
static int __maybe_unused imx_pinctrl_resume(struct device *dev)
{
struct imx_pinctrl *ipctl = dev_get_drvdata(dev);
return pinctrl_force_default(ipctl->pctl);
}
const struct dev_pm_ops imx_pinctrl_pm_ops = {
SET_LATE_SYSTEM_SLEEP_PM_OPS(imx_pinctrl_suspend,
imx_pinctrl_resume)
};

1
drivers/pinctrl/freescale/pinctrl-imx.h
View File

@ -17,6 +17,7 @@
struct platform_device;
extern struct pinmux_ops imx_pmx_ops;
extern const struct dev_pm_ops imx_pinctrl_pm_ops;
/**
* struct imx_pin_mmio - MMIO pin configurations

1
drivers/pinctrl/freescale/pinctrl-imx8mq.c
View File

@ -339,6 +339,7 @@ static struct platform_driver imx8mq_pinctrl_driver = {
.driver = {
.name = "imx8mq-pinctrl",
.of_match_table = of_match_ptr(imx8mq_pinctrl_of_match),
.pm = &imx_pinctrl_pm_ops,
.suppress_bind_attrs = true,
},
.probe = imx8mq_pinctrl_probe,