pinctrl: rockchip: add suspend/resume functions
support suspend/resume of pinctrl, it allows handling sleep mode
for hogged pins in pinctrl
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Tested-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index 59a5461..28b1218 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -1796,6 +1796,23 @@
return ctrl;
}
+static int __maybe_unused rockchip_pinctrl_suspend(struct device *dev)
+{
+ struct rockchip_pinctrl *info = dev_get_drvdata(dev);
+
+ return pinctrl_force_sleep(info->pctl_dev);
+}
+
+static int __maybe_unused rockchip_pinctrl_resume(struct device *dev)
+{
+ struct rockchip_pinctrl *info = dev_get_drvdata(dev);
+
+ return pinctrl_force_default(info->pctl_dev);
+}
+
+static SIMPLE_DEV_PM_OPS(rockchip_pinctrl_dev_pm_ops, rockchip_pinctrl_suspend,
+ rockchip_pinctrl_resume);
+
static int rockchip_pinctrl_probe(struct platform_device *pdev)
{
struct rockchip_pinctrl *info;
@@ -2009,6 +2026,7 @@
.driver = {
.name = "rockchip-pinctrl",
.owner = THIS_MODULE,
+ .pm = &rockchip_pinctrl_dev_pm_ops,
.of_match_table = rockchip_pinctrl_dt_match,
},
};