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Commit c1a9634f authored by Bjorn Andersson's avatar Bjorn Andersson Committed by Sebastian Reichel
Browse files

power: reset: reboot-mode: Add managed resource API 



Provide managed resource version of reboot_mode_register() and
reboot_mode_unregister() to simplify implementations.

Signed-off-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: default avatarJohn Stultz <john.stultz@linaro.org>
Signed-off-by: default avatarSebastian Reichel <sre@kernel.org>
parent 957cb720

Documentation/driver-model/devres.txt

+4 −0
Original line number Diff line number Diff line
@@ -342,6 +342,10 @@ PINCTRL 
  devm_pinctrl_register()

  devm_pinctrl_unregister()



POWER

  devm_reboot_mode_register()

  devm_reboot_mode_unregister()



PWM

  devm_pwm_get()

  devm_pwm_put()

drivers/power/reset/reboot-mode.c

+59 −0
Original line number Diff line number Diff line
@@ -135,6 +135,65 @@ int reboot_mode_unregister(struct reboot_mode_driver *reboot) 
}

EXPORT_SYMBOL_GPL(reboot_mode_unregister);



static void devm_reboot_mode_release(struct device *dev, void *res)

{

	reboot_mode_unregister(*(struct reboot_mode_driver **)res);

}



/**

 * devm_reboot_mode_register() - resource managed reboot_mode_register()

 * @dev: device to associate this resource with

 * @reboot: reboot mode driver

 *

 * Returns: 0 on success or a negative error code on failure.

 */

int devm_reboot_mode_register(struct device *dev,

			      struct reboot_mode_driver *reboot)

{

	struct reboot_mode_driver **dr;

	int rc;



	dr = devres_alloc(devm_reboot_mode_release, sizeof(*dr), GFP_KERNEL);

	if (!dr)

		return -ENOMEM;



	rc = reboot_mode_register(reboot);

	if (rc) {

		devres_free(dr);

		return rc;

	}



	*dr = reboot;

	devres_add(dev, dr);



	return 0;

}

EXPORT_SYMBOL_GPL(devm_reboot_mode_register);



static int devm_reboot_mode_match(struct device *dev, void *res, void *data)

{

	struct reboot_mode_driver **p = res;



	if (WARN_ON(!p || !*p))

		return 0;



	return *p == data;

}



/**

 * devm_reboot_mode_unregister() - resource managed reboot_mode_unregister()

 * @dev: device to associate this resource with

 * @reboot: reboot mode driver

 */

void devm_reboot_mode_unregister(struct device *dev,

				 struct reboot_mode_driver *reboot)

{

	WARN_ON(devres_release(dev,

			       devm_reboot_mode_release,

			       devm_reboot_mode_match, reboot));

}

EXPORT_SYMBOL_GPL(devm_reboot_mode_unregister);



MODULE_AUTHOR("Andy Yan <andy.yan@rock-chips.com");

MODULE_DESCRIPTION("System reboot mode core library");

MODULE_LICENSE("GPL v2");

drivers/power/reset/reboot-mode.h

+4 −0
Original line number Diff line number Diff line
@@ -10,5 +10,9 @@ struct reboot_mode_driver { 


int reboot_mode_register(struct reboot_mode_driver *reboot);

int reboot_mode_unregister(struct reboot_mode_driver *reboot);

int devm_reboot_mode_register(struct device *dev,

			      struct reboot_mode_driver *reboot);

void devm_reboot_mode_unregister(struct device *dev,

				 struct reboot_mode_driver *reboot);



#endif