michaelh/zephyr
1
0
Fork 0
Code Releases Activity

device: Extend device_set_power_state API to support async requests

Browse source 
The existing device_set_power_state() API works only in synchronous
mode and this is not desirable for devices(ex: Gyro) which take
longer time (few 100 mSec) to suspend/resume.

To support async mode, a new callback argument is added to the API.
The device drivers can asynchronously suspend/resume and call the
callback function upon completion of the async request.

This commit adds the missing callback parameter to all the drivers
to make it compliant with the new API.

Signed-off-by: Ramakrishna Pallala <ramakrishna.pallala@intel.com>
This commit is contained in:
Ramakrishna Pallala 2019-02-14 09:35:42 +05:30 • committed by Anas Nashif
commit e1639b5345
29 changed files with 246 additions and 120 deletions
Download patch file Download diff file Expand all files Collapse all files

21
include/device.h
View file

@ -208,6 +208,8 @@ extern "C" {
struct device;
typedef void (*device_pm_cb)(struct device *dev,
int status, void *context, void *arg);
/**
* @brief Static device information (In ROM) Per driver instance
@ -221,7 +223,7 @@ struct device_config {
int (*init)(struct device *device);
#ifdef CONFIG_DEVICE_POWER_MANAGEMENT
int (*device_pm_control)(struct device *device, u32_t command,
void *context);
void *context, device_pm_cb cb, void *arg);
#endif
const void *config_info;
};
@ -364,11 +366,16 @@ void device_busy_clear(struct device *busy_dev);
* @param unused_device Unused
* @param unused_ctrl_command Unused
* @param unused_context Unused
* @param cb Unused
* @param unused_arg Unused
*
* @retval 0 Always returns 0
*/
int device_pm_control_nop(struct device *unused_device,
u32_t unused_ctrl_command, void *unused_context);
u32_t unused_ctrl_command,
void *unused_context,
device_pm_cb cb,
void *unused_arg);
/**
* @brief Call the set power state function of a device
*
@ -377,16 +384,19 @@ int device_pm_control_nop(struct device *unused_device,
* Note that devices may support just some of the device power states
* @param device Pointer to device structure of the driver instance.
* @param device_power_state Device power state to be set
* @param cb Callback function to notify device power status
* @param arg Caller passed argument to callback function
*
* @retval 0 If successful.
* @retval Errno Negative errno code if failure.
*/
static inline int device_set_power_state(struct device *device,
u32_t device_power_state)
u32_t device_power_state,
device_pm_cb cb, void *arg)
{
return device->config->device_pm_control(device,
DEVICE_PM_SET_POWER_STATE,
&device_power_state);
&device_power_state, cb, arg);
}
/**
@ -407,7 +417,8 @@ static inline int device_get_power_state(struct device *device,
{
return device->config->device_pm_control(device,
DEVICE_PM_GET_POWER_STATE,
device_power_state);
device_power_state,
NULL, NULL);
}
/**