diff options
| author | Lokesh Vutla <lokeshvutla@ti.com> | 2019-09-27 13:48:14 +0530 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2019-10-15 08:40:03 -0600 |
| commit | 0cf795a8024f36e2aaea3db8ab8b4d3805dc541c (patch) | |
| tree | f5f9138d55adf5ad12b1b90d48f20492911fc7af | |
| parent | af17b0dad556889ebdaf5c3e62a4844e15189374 (diff) | |
power: domain: Introduce dev_power_domain_off
Add dev_power_domain_off() api to disable all the power-domains
corresponding to a device
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
| -rw-r--r-- | drivers/power/domain/power-domain-uclass.c | 35 | ||||
| -rw-r--r-- | include/power-domain.h | 17 |
2 files changed, 45 insertions, 7 deletions
diff --git a/drivers/power/domain/power-domain-uclass.c b/drivers/power/domain/power-domain-uclass.c index c961436d62..80df5aff50 100644 --- a/drivers/power/domain/power-domain-uclass.c +++ b/drivers/power/domain/power-domain-uclass.c @@ -7,6 +7,7 @@ #include <dm.h> #include <power-domain.h> #include <power-domain-uclass.h> +#include <dm/device-internal.h> static inline struct power_domain_ops *power_domain_dev_ops(struct udevice *dev) { @@ -107,11 +108,11 @@ int power_domain_off(struct power_domain *power_domain) return ops->off(power_domain); } -#if !CONFIG_IS_ENABLED(OF_PLATDATA) -int dev_power_domain_on(struct udevice *dev) +#if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) +static int dev_power_domain_ctrl(struct udevice *dev, bool on) { struct power_domain pd; - int i, count, ret; + int i, count, ret = 0; count = dev_count_phandle_with_args(dev, "power-domains", "#power-domain-cells"); @@ -119,12 +120,32 @@ int dev_power_domain_on(struct udevice *dev) ret = power_domain_get_by_index(dev, &pd, i); if (ret) return ret; - ret = power_domain_on(&pd); - if (ret) - return ret; + if (on) + ret = power_domain_on(&pd); + else + ret = power_domain_off(&pd); } - return 0; + /* + * power_domain_get() bound the device, thus + * we must remove it again to prevent unbinding + * active devices (which would result in unbind + * error). + */ + if (count > 0 && !on) + device_remove(pd.dev, DM_REMOVE_NORMAL); + + return ret; +} + +int dev_power_domain_on(struct udevice *dev) +{ + return dev_power_domain_ctrl(dev, true); +} + +int dev_power_domain_off(struct udevice *dev) +{ + return dev_power_domain_ctrl(dev, false); } #endif diff --git a/include/power-domain.h b/include/power-domain.h index 490fedbb12..72ff2ff25b 100644 --- a/include/power-domain.h +++ b/include/power-domain.h @@ -172,4 +172,21 @@ static inline int dev_power_domain_on(struct udevice *dev) } #endif +/** + * dev_power_domain_off - Disable power domains for a device . + * + * @dev: The client device. + * + * @return 0 if OK, or a negative error code. + */ +#if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) && \ + CONFIG_IS_ENABLED(POWER_DOMAIN) +int dev_power_domain_off(struct udevice *dev); +#else +static inline int dev_power_domain_off(struct udevice *dev) +{ + return 0; +} +#endif + #endif |