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pm: device_runtime: Add delay to async put 

Add a delay parameter to asynchronous device runtim put. This allows
to delay the put operation what is useful to avoid multiple states
transitions.

Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
This commit is contained in:
Flavio Ceolin 2023-12-05 23:17:56 +00:00 committed by Carles Cufí
parent 0ea173b774
commit b5ca7a06b4
10 changed files with 33 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
doc/services/pm/device_runtime.rst
View File

@ -224,5 +224,5 @@ asynchronous API:
...
/* "put" device (decreases usage count, schedule suspend if no more users) */
return pm_device_runtime_put_async(dev);
return pm_device_runtime_put_async(dev, K_NO_WAIT);
}

7
include/zephyr/pm/device_runtime.h
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@ -131,6 +131,7 @@ int pm_device_runtime_put(const struct device *dev);
* @funcprops \pre_kernel_ok, \async, \isr_ok
*
* @param dev Device instance.
* @param delay Minimum amount of time before triggering the action.
*
* @retval 0 If it succeeds. In case device runtime PM is not enabled or not
* available this function will be a no-op and will also return 0.
@ -140,7 +141,7 @@ int pm_device_runtime_put(const struct device *dev);
*
* @see pm_device_runtime_put()
*/
int pm_device_runtime_put_async(const struct device *dev);
int pm_device_runtime_put_async(const struct device *dev, k_timeout_t delay);
/**
* @brief Check if device runtime is enabled for a given device.
@ -188,9 +189,11 @@ static inline int pm_device_runtime_put(const struct device *dev)
return 0;
}
static inline int pm_device_runtime_put_async(const struct device *dev)
static inline int pm_device_runtime_put_async(const struct device *dev,
k_timeout_t delay)
{
ARG_UNUSED(dev);
ARG_UNUSED(delay);
return 0;
}

6
include/zephyr/tracing/tracing.h
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@ -1954,15 +1954,17 @@
/**
* @brief Trace putting a device (asynchronously) call entry.
* @param dev Device instance.
* @param delay Time to delay the operation
*/
#define sys_port_trace_pm_device_runtime_put_async_enter(dev)
#define sys_port_trace_pm_device_runtime_put_async_enter(dev, delay)
/**
* @brief Trace putting a device (asynchronously) call exit.
* @param dev Device instance.
* @param delay Time to delay the operation.
* @param ret Return value.
*/
#define sys_port_trace_pm_device_runtime_put_async_exit(dev, ret)
#define sys_port_trace_pm_device_runtime_put_async_exit(dev, delay, ret)
/**
* @brief Trace enabling device runtime PM call entry.

16
subsys/pm/device_runtime.c
View File

@ -35,6 +35,7 @@ LOG_MODULE_DECLARE(pm_device, CONFIG_PM_DEVICE_LOG_LEVEL);
*
* @param dev Device instance.
* @param async Perform operation asynchronously.
* @param delay Period to delay the asynchronous operation.
*
* @retval 0 If device has been suspended or queued for suspend.
* @retval -EALREADY If device is already suspended (can only happen if get/put
@ -42,7 +43,8 @@ LOG_MODULE_DECLARE(pm_device, CONFIG_PM_DEVICE_LOG_LEVEL);
* @retval -EBUSY If the device is busy.
* @retval -errno Other negative errno, result of the action callback.
*/
static int runtime_suspend(const struct device *dev, bool async)
static int runtime_suspend(const struct device *dev, bool async,
k_timeout_t delay)
{
int ret = 0;
struct pm_device *pm = dev->pm;
@ -77,7 +79,7 @@ static int runtime_suspend(const struct device *dev, bool async)
if (async && !k_is_pre_kernel()) {
/* queue suspend */
pm->state = PM_DEVICE_STATE_SUSPENDING;
(void)k_work_schedule(&pm->work, K_NO_WAIT);
(void)k_work_schedule(&pm->work, delay);
} else {
/* suspend now */
ret = pm->action_cb(pm->dev, PM_DEVICE_ACTION_SUSPEND);
@ -233,7 +235,7 @@ int pm_device_runtime_put(const struct device *dev)
}
SYS_PORT_TRACING_FUNC_ENTER(pm, device_runtime_put, dev);
ret = runtime_suspend(dev, false);
ret = runtime_suspend(dev, false, K_NO_WAIT);
/*
* Now put the domain
@ -247,7 +249,7 @@ int pm_device_runtime_put(const struct device *dev)
return ret;
}
int pm_device_runtime_put_async(const struct device *dev)
int pm_device_runtime_put_async(const struct device *dev, k_timeout_t delay)
{
int ret;
@ -255,9 +257,9 @@ int pm_device_runtime_put_async(const struct device *dev)
return 0;
}
SYS_PORT_TRACING_FUNC_ENTER(pm, device_runtime_put_async, dev);
ret = runtime_suspend(dev, true);
SYS_PORT_TRACING_FUNC_EXIT(pm, device_runtime_put_async, dev, ret);
SYS_PORT_TRACING_FUNC_ENTER(pm, device_runtime_put_async, dev, delay);
ret = runtime_suspend(dev, true, delay);
SYS_PORT_TRACING_FUNC_EXIT(pm, device_runtime_put_async, dev, delay, ret);
return ret;
}

4
subsys/tracing/ctf/tracing_ctf.h
View File

@ -338,8 +338,8 @@ extern "C" {
#define sys_port_trace_pm_device_runtime_get_exit(dev, ret)
#define sys_port_trace_pm_device_runtime_put_enter(dev)
#define sys_port_trace_pm_device_runtime_put_exit(dev, ret)
#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_put_async_enter(dev, delay)
#define sys_port_trace_pm_device_runtime_put_async_exit(dev, delay, ret)
#define sys_port_trace_pm_device_runtime_enable_enter(dev)
#define sys_port_trace_pm_device_runtime_enable_exit(dev, ret)
#define sys_port_trace_pm_device_runtime_disable_enter(dev)

2
subsys/tracing/sysview/SYSVIEW_Zephyr.txt
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@ -164,7 +164,7 @@ TaskState 0xBF 1=dummy, 2=Waiting, 4=New, 8=Terminated, 16=Suspended, 32=Termina
156 pm_system_suspend ticks=%u | Returns %Bool
157 pm_device_runtime_get dev=%I | Returns %u
158 pm_device_runtime_put dev=%I | Returns %u
159 pm_device_runtime_put_async dev=%I | Returns %u
159 pm_device_runtime_put_async dev=%I, Delay=%TimeOut | Returns %u
160 pm_device_runtime_enable dev=%I | Returns %u
161 pm_device_runtime_disable dev=%I | Returns %u

6
subsys/tracing/sysview/tracing_sysview.h
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@ -640,10 +640,10 @@ void sys_trace_k_thread_info(struct k_thread *thread);
#define sys_port_trace_pm_device_runtime_put_exit(dev, ret) \
SEGGER_SYSVIEW_RecordEndCallU32(TID_PM_DEVICE_RUNTIME_PUT, \
(uint32_t)ret)
#define sys_port_trace_pm_device_runtime_put_async_enter(dev) \
#define sys_port_trace_pm_device_runtime_put_async_enter(dev, delay) \
SEGGER_SYSVIEW_RecordU32(TID_PM_DEVICE_RUNTIME_PUT_ASYNC, \
(uint32_t)(uintptr_t)dev)
#define sys_port_trace_pm_device_runtime_put_async_exit(dev, ret) \
(uint32_t)(uintptr_t)dev, (uint32_t)delay.ticks)
#define sys_port_trace_pm_device_runtime_put_async_exit(dev, delay, ret) \
SEGGER_SYSVIEW_RecordEndCallU32(TID_PM_DEVICE_RUNTIME_PUT_ASYNC, \
(uint32_t)ret)
#define sys_port_trace_pm_device_runtime_enable_enter(dev) \

4
subsys/tracing/test/tracing_test.h
View File

@ -442,8 +442,8 @@
#define sys_port_trace_pm_device_runtime_get_exit(dev, ret)
#define sys_port_trace_pm_device_runtime_put_enter(dev)
#define sys_port_trace_pm_device_runtime_put_exit(dev, ret)
#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_put_async_enter(dev, delay)
#define sys_port_trace_pm_device_runtime_put_async_exit(dev, delay, ret)
#define sys_port_trace_pm_device_runtime_enable_enter(dev)
#define sys_port_trace_pm_device_runtime_enable_exit(dev, ret)
#define sys_port_trace_pm_device_runtime_disable_enter(dev)

4
subsys/tracing/user/tracing_user.h
View File

@ -329,8 +329,8 @@ void sys_trace_idle(void);
#define sys_port_trace_pm_device_runtime_get_exit(dev, ret)
#define sys_port_trace_pm_device_runtime_put_enter(dev)
#define sys_port_trace_pm_device_runtime_put_exit(dev, ret)
#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_put_async_enter(dev, delay)
#define sys_port_trace_pm_device_runtime_put_async_exit(dev, delay, ret)
#define sys_port_trace_pm_device_runtime_enable_enter(dev)
#define sys_port_trace_pm_device_runtime_enable_exit(dev, ret)
#define sys_port_trace_pm_device_runtime_disable_enter(dev)

8
tests/subsys/pm/device_runtime_api/src/main.c
View File

@ -42,7 +42,7 @@ void test_api_setup(void *data)
zassert_equal(ret, 0);
ret = pm_device_runtime_put(test_dev);
zassert_equal(ret, 0);
ret = pm_device_runtime_put_async(test_dev);
ret = pm_device_runtime_put_async(test_dev, K_NO_WAIT);
zassert_equal(ret, 0);
/* enable runtime PM */
@ -138,7 +138,7 @@ ZTEST(device_runtime_api, test_api)
test_driver_pm_async(test_dev);
/* usage: 1, -1, suspend: yes (queued) */
ret = pm_device_runtime_put_async(test_dev);
ret = pm_device_runtime_put_async(test_dev, K_NO_WAIT);
zassert_equal(ret, 0);
(void)pm_device_state_get(test_dev, &state);
@ -149,7 +149,7 @@ ZTEST(device_runtime_api, test_api)
zassert_equal(ret, -EALREADY);
/* usage: 0, -1, suspend: no (unbalanced call) */
ret = pm_device_runtime_put_async(test_dev);
ret = pm_device_runtime_put_async(test_dev, K_NO_WAIT);
zassert_equal(ret, -EALREADY);
/* unblock test driver and let it finish */
@ -171,7 +171,7 @@ ZTEST(device_runtime_api, test_api)
test_driver_pm_async(test_dev);
/* usage: 1, -1, suspend: yes (queued) */
ret = pm_device_runtime_put_async(test_dev);
ret = pm_device_runtime_put_async(test_dev, K_NO_WAIT);
zassert_equal(ret, 0);
(void)pm_device_state_get(test_dev, &state);