Commit bcda91bf authored by Uwe Kleine-König's avatar Uwe Kleine-König Committed by Thierry Reding
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pwm: Add a device-managed function to add PWM chips 



This potentially simplifies low-level PWM drivers.

Signed-off-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: default avatarThierry Reding <thierry.reding@gmail.com>
parent d233504a

drivers/pwm/core.c

+19 −0
Original line number Diff line number Diff line
@@ -335,6 +335,25 @@ int pwmchip_remove(struct pwm_chip *chip) 
}

EXPORT_SYMBOL_GPL(pwmchip_remove);



static void devm_pwmchip_remove(void *data)

{

	struct pwm_chip *chip = data;



	pwmchip_remove(chip);

}



int devm_pwmchip_add(struct device *dev, struct pwm_chip *chip)

{

	int ret;



	ret = pwmchip_add(chip);

	if (ret)

		return ret;



	return devm_add_action_or_reset(dev, devm_pwmchip_remove, chip);

}

EXPORT_SYMBOL_GPL(devm_pwmchip_add);



/**

 * pwm_request() - request a PWM device

 * @pwm: global PWM device index

include/linux/pwm.h

+3 −0
Original line number Diff line number Diff line
@@ -405,6 +405,9 @@ void *pwm_get_chip_data(struct pwm_device *pwm); 


int pwmchip_add(struct pwm_chip *chip);

int pwmchip_remove(struct pwm_chip *chip);



int devm_pwmchip_add(struct device *dev, struct pwm_chip *chip);



struct pwm_device *pwm_request_from_chip(struct pwm_chip *chip,

					 unsigned int index,

					 const char *label);