diff options
| author | Peter Chen <peter.chen@nxp.com> | 2016-12-22 11:16:09 +0800 |
|---|---|---|
| committer | Dong Aisheng <aisheng.dong@nxp.com> | 2021-11-02 17:10:32 +0800 |
| commit | 4b025e106c706ca806990c6a4127068a54f36012 (patch) | |
| tree | 1d392c2072aecfa57d8d10416c9e9c14fa692f12 /drivers/regulator | |
| parent | 94e0c7a78c04d754ef6ff6f34bf4b32ec2d10933 (diff) | |
MLK-13638-4 regulator: fixed: add system pm routines for pinctrl
At some systems, the pinctrl setting will be lost or needs to
set as "sleep" state to save power consumption. So, we need to
configure pinctrl as "sleep" state when system enters suspend,
and as "default" state after system resumes. In this way, the
pinctrl value can be recovered as "default" state after resuming.
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com>
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/fixed.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c index 599ad201dca7..e9e753f8907f 100644 --- a/drivers/regulator/fixed.c +++ b/drivers/regulator/fixed.c @@ -29,7 +29,7 @@ #include <linux/regulator/of_regulator.h> #include <linux/regulator/machine.h> #include <linux/clk.h> - +#include <linux/pinctrl/consumer.h> struct fixed_voltage_data { struct regulator_desc desc; @@ -333,11 +333,32 @@ static const struct of_device_id fixed_of_match[] = { MODULE_DEVICE_TABLE(of, fixed_of_match); #endif +#ifdef CONFIG_PM_SLEEP +static int reg_fixed_voltage_suspend(struct device *dev) +{ + pinctrl_pm_select_sleep_state(dev); + + return 0; +} +static int reg_fixed_voltage_resume(struct device *dev) +{ + pinctrl_pm_select_default_state(dev); + + return 0; +} +#endif + +static const struct dev_pm_ops reg_fixed_voltage_pm_ops = { + SET_LATE_SYSTEM_SLEEP_PM_OPS(reg_fixed_voltage_suspend, + reg_fixed_voltage_resume) +}; + static struct platform_driver regulator_fixed_voltage_driver = { .probe = reg_fixed_voltage_probe, .driver = { .name = "reg-fixed-voltage", .of_match_table = of_match_ptr(fixed_of_match), + .pm = ®_fixed_voltage_pm_ops, }, }; |