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.g...@nxp.com>
Signed-off-by: Abel Vesa <abel.v...@nxp.com>
---
Changes since v2:
* removed the pinctrl-imx8mq with imx8mq in the subject
* added static and __maybe_unused to both suspend and resume
* removed the useless null checks
drivers/pinctrl/freescale/pinctrl-imx.c | 19 +++++++++++++++++++
drivers/pinctrl/freescale/pinctrl-imx.h | 1 +
drivers/pinctrl/freescale/pinctrl-imx8mq.c | 1 +
3 files changed, 21 insertions(+)
diff --git a/drivers/pinctrl/freescale/pinctrl-imx.c
b/drivers/pinctrl/freescale/pinctrl-imx.c
index 188001b..93a86d2 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx.c
+++ b/drivers/pinctrl/freescale/pinctrl-imx.c
@@ -887,3 +887,22 @@ 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)
+};
diff --git a/drivers/pinctrl/freescale/pinctrl-imx.h
b/drivers/pinctrl/freescale/pinctrl-imx.h
index 98a4889..333d32b 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx.h
+++ b/drivers/pinctrl/freescale/pinctrl-imx.h
@@ -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
diff --git a/drivers/pinctrl/freescale/pinctrl-imx8mq.c
b/drivers/pinctrl/freescale/pinctrl-imx8mq.c
index 8d39af5..50aa1c0 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx8mq.c
+++ b/drivers/pinctrl/freescale/pinctrl-imx8mq.c
@@ -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,
--
2.7.4
