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pm: device_runtime: Return possible error on enable

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Change the function pm_device_runtime_enable() to return 0 on
success or an error code in case of error.

Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
This commit is contained in:
Flavio Ceolin 2021-12-14 09:47:00 -08:00 • committed by Anas Nashif
commit 18b932f10d
13 changed files with 29 additions and 22 deletions
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5
doc/guides/pm/device_runtime.rst
View file

@ -154,7 +154,10 @@ must perform the necessary operations to suspend the device.
...
/* make sure the device physically is suspended */
/* enable device runtime power management */
pm_device_runtime_enable(dev);
ret = pm_device_runtime_enable(dev);
if (ret < 0) {
return ret;
}
...
}

4
drivers/gpio/gpio_stm32.c
View file

@ -612,9 +612,7 @@ static int gpio_stm32_init(const struct device *dev)
#endif
#ifdef CONFIG_PM_DEVICE_RUNTIME
pm_device_runtime_enable(dev);
return 0;
return pm_device_runtime_enable(dev);
#else
return gpio_stm32_clock_request(dev, true);
#endif

8
include/pm/device_runtime.h
View file

@ -28,8 +28,12 @@ extern "C" {
* @funcprops \pre_kernel_ok
*
* @param dev Device instance.
*
* @retval 0 If the device runtime PM is enabled successfully.
* @retval -EPERM If device has power state locked.
* @retval -ENOSYS If the functionality is not available.
*/
void pm_device_runtime_enable(const struct device *dev);
int pm_device_runtime_enable(const struct device *dev);
/**
* @brief Disable device runtime PM
@ -131,7 +135,7 @@ int pm_device_runtime_put_async(const struct device *dev);
bool pm_device_runtime_is_enabled(const struct device *dev);
#else
static inline void pm_device_runtime_enable(const struct device *dev) { }
static inline int pm_device_runtime_enable(const struct device *dev) { return -ENOSYS; }
static inline int pm_device_runtime_disable(const struct device *dev) { return -ENOSYS; }
static inline int pm_device_runtime_get(const struct device *dev) { return -ENOSYS; }
static inline int pm_device_runtime_put(const struct device *dev) { return -ENOSYS; }

3
include/tracing/tracing.h
View file

@ -1985,8 +1985,9 @@ void sys_trace_idle(void);
/**
* @brief Trace enabling device runtime PM call exit.
* @param dev Device instance.
* @param ret Return value.
*/
#define sys_port_trace_pm_device_runtime_enable_exit(dev)
#define sys_port_trace_pm_device_runtime_enable_exit(dev, ret)
/**
* @brief Trace disabling device runtime PM call entry.

4
samples/subsys/pm/device_pm/src/dummy_driver.c
View file

@ -109,9 +109,7 @@ int dummy_init(const struct device *dev)
printk("parent not found\n");
}
pm_device_runtime_enable(dev);
return 0;
return pm_device_runtime_enable(dev);
}
PM_DEVICE_DEFINE(dummy_driver, dummy_device_pm_action);

3
samples/subsys/pm/device_pm/src/dummy_parent.c
View file

@ -48,8 +48,7 @@ static const struct dummy_parent_api funcs = {
int dummy_parent_init(const struct device *dev)
{
pm_device_runtime_enable(dev);
return 0;
return pm_device_runtime_enable(dev);
}
PM_DEVICE_DEFINE(dummy_parent, dummy_parent_pm_action);

7
subsys/pm/device_runtime.c
View file

@ -166,13 +166,15 @@ int pm_device_runtime_put_async(const struct device *dev)
return ret;
}
void pm_device_runtime_enable(const struct device *dev)
int pm_device_runtime_enable(const struct device *dev)
{
int ret = 0;
struct pm_device *pm = dev->pm;
SYS_PORT_TRACING_FUNC_ENTER(pm, device_runtime_enable, dev);
if (pm_device_state_is_locked(dev)) {
ret = -EPERM;
goto end;
}
@ -200,7 +202,8 @@ unlock:
}
end:
SYS_PORT_TRACING_FUNC_EXIT(pm, device_runtime_enable, dev);
SYS_PORT_TRACING_FUNC_EXIT(pm, device_runtime_enable, dev, ret);
return ret;
}
int pm_device_runtime_disable(const struct device *dev)

2
subsys/tracing/ctf/tracing_ctf.h
View file

@ -331,7 +331,7 @@ extern "C" {
#define sys_port_trace_pm_device_runtime_put_async_enter(dev)
#define sys_port_trace_pm_device_runtime_put_async_exit(dev, ret)
#define sys_port_trace_pm_device_runtime_enable_enter(dev)
#define sys_port_trace_pm_device_runtime_enable_exit(dev)
#define sys_port_trace_pm_device_runtime_enable_exit(dev, ret)
#define sys_port_trace_pm_device_runtime_disable_enter(dev)
#define sys_port_trace_pm_device_runtime_disable_exit(dev, ret)

2
subsys/tracing/sysview/SYSVIEW_Zephyr.txt
View file

@ -166,5 +166,5 @@ TaskState 0xBF 1=dummy, 2=Waiting, 4=New, 8=Terminated, 16=Suspended, 32=Termina
156 pm_device_runtime_get dev=%I | Returns %u
157 pm_device_runtime_put dev=%I | Returns %u
158 pm_device_runtime_put_async dev=%I | Returns %u
159 pm_device_runtime_enable dev=%I
159 pm_device_runtime_enable dev=%I | Returns %u
160 pm_device_runtime_disable dev=%I | Returns %u

5
subsys/tracing/sysview/tracing_sysview.h
View file

@ -639,8 +639,9 @@ void sys_trace_k_thread_info(struct k_thread *thread);
#define sys_port_trace_pm_device_runtime_enable_enter(dev) \
SEGGER_SYSVIEW_RecordU32(TID_PM_DEVICE_RUNTIME_ENABLE, \
(uint32_t)(uintptr_t)dev)
#define sys_port_trace_pm_device_runtime_enable_exit(dev) \
SEGGER_SYSVIEW_RecordEndCall(TID_PM_DEVICE_RUNTIME_ENABLE)
#define sys_port_trace_pm_device_runtime_enable_exit(dev, ret) \
SEGGER_SYSVIEW_RecordEndCall(TID_PM_DEVICE_RUNTIME_ENABLE, \
(uint32_t)ret)
#define sys_port_trace_pm_device_runtime_disable_enter(dev) \
SEGGER_SYSVIEW_RecordU32(TID_PM_DEVICE_RUNTIME_DISABLE, \
(uint32_t)(uintptr_t)dev)

2
subsys/tracing/test/tracing_test.h
View file

@ -439,7 +439,7 @@
#define sys_port_trace_pm_device_runtime_put_async_enter(dev)
#define sys_port_trace_pm_device_runtime_put_async_exit(dev, ret)
#define sys_port_trace_pm_device_runtime_enable_enter(dev)
#define sys_port_trace_pm_device_runtime_enable_exit(dev)
#define sys_port_trace_pm_device_runtime_enable_exit(dev, ret)
#define sys_port_trace_pm_device_runtime_disable_enter(dev)
#define sys_port_trace_pm_device_runtime_disable_exit(dev, ret)

3
tests/subsys/pm/power_mgmt/src/dummy_driver.c
View file

@ -33,8 +33,7 @@ static const struct dummy_driver_api funcs = {
int dummy_init(const struct device *dev)
{
pm_device_runtime_enable(dev);
return 0;
return pm_device_runtime_enable(dev);
}
PM_DEVICE_DEFINE(dummy_driver, dummy_device_pm_action);

3
tests/subsys/pm/power_mgmt/src/main.c
View file

@ -304,7 +304,8 @@ void test_power_state_trans(void)
k_sleep(SLEEP_TIMEOUT);
zassert_true(leave_idle, NULL);
pm_device_runtime_enable(device_dummy);
ret = pm_device_runtime_enable(device_dummy);
zassert_true(ret == 0, "Failed to enable device runtime PM");
pm_notifier_unregister(&notifier);
}