[PATCH v3 1/6] pinctrl: rockchip: add suspend/resume functions

zyw
2014-10-21T03:43:18Z

From: Chris <zyw@rock-chips.com>

support suspend/resume of pinctrl, it allows handling sleep mode
for hogged pins in pinctrl

Signed-off-by: Chris <zyw@rock-chips.com>
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
---

Changes in v3: None
Changes in v2: None

drivers/pinctrl/pinctrl-rockchip.c | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index d0f3c18..d384d99 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -1795,6 +1795,31 @@ static struct rockchip_pin_ctrl *rockchip_pinctrl_get_soc_data(
return ctrl;
}

+#ifdef CONFIG_PM
+static int rockchip_pinctrl_suspend(struct platform_device *pdev,
+ pm_message_t state)
+{
+ struct rockchip_pinctrl *info;
+
+ info = platform_get_drvdata(pdev);
+ if (!info)
+ return -EINVAL;
+
+ return pinctrl_force_sleep(info->pctl_dev);
+}
+
+static int rockchip_pinctrl_resume(struct platform_device *pdev)
+{
+ struct rockchip_pinctrl *info;
+
+ info = platform_get_drvdata(pdev);
+ if (!info)
+ return -EINVAL;
+
+ return pinctrl_force_default(info->pctl_dev);
+}
+#endif
+
static int rockchip_pinctrl_probe(struct platform_device *pdev)
{
struct rockchip_pinctrl *info;
@@ -2010,6 +2035,10 @@ static struct platform_driver rockchip_pinctrl_driver = {
.owner = THIS_MODULE,
.of_match_table = rockchip_pinctrl_dt_match,
},
+ #ifdef CONFIG_PM
+ .suspend = rockchip_pinctrl_suspend,
+ .resume = rockchip_pinctrl_resume,
+ #endif
};

static int __init rockchip_pinctrl_drv_register(void)
--
1.7.9.5