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power: domain: Introduce dev_power_domain_off

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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>
This commit is contained in:
Lokesh Vutla 2019-09-27 13:48:14 +05:30 • committed by Simon Glass
parent af17b0dad5
commit 0cf795a802
2 changed files with 45 additions and 7 deletions
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33
drivers/power/domain/power-domain-uclass.c
View file

@ -7,6 +7,7 @@
#include <dm.h> #include <dm.h>
#include <power-domain.h> #include <power-domain.h>
#include <power-domain-uclass.h> #include <power-domain-uclass.h>
#include <dm/device-internal.h>
static inline struct power_domain_ops *power_domain_dev_ops(struct udevice *dev) 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); return ops->off(power_domain);
} }
#if !CONFIG_IS_ENABLED(OF_PLATDATA) #if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA))
int dev_power_domain_on(struct udevice *dev) static int dev_power_domain_ctrl(struct udevice *dev, bool on)
{ {
struct power_domain pd; struct power_domain pd;
int i, count, ret; int i, count, ret = 0;
count = dev_count_phandle_with_args(dev, "power-domains", count = dev_count_phandle_with_args(dev, "power-domains",
"#power-domain-cells"); "#power-domain-cells");
@ -119,12 +120,32 @@ int dev_power_domain_on(struct udevice *dev)
ret = power_domain_get_by_index(dev, &pd, i); ret = power_domain_get_by_index(dev, &pd, i);
if (ret) if (ret)
return ret; return ret;
if (on)
ret = power_domain_on(&pd); ret = power_domain_on(&pd);
if (ret) else
return ret; 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 #endif

17
include/power-domain.h
View file

@ -172,4 +172,21 @@ static inline int dev_power_domain_on(struct udevice *dev)
} }
#endif #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 #endif