191 static int pwm_export_child(struct device *parent, struct pwm_device *pwm)  in pwm_export_child()  argument
208 	export->child.parent = parent;  in pwm_export_child()
228 static int pwm_unexport_child(struct device *parent, struct pwm_device *pwm)  in pwm_unexport_child()  argument
235 	child = device_find_child(parent, pwm, pwm_unexport_match);  in pwm_unexport_child()
247 static ssize_t export_store(struct device *parent,  in export_store()  argument
251 	struct pwm_chip *chip = dev_get_drvdata(parent);  in export_store()
267 	ret = pwm_export_child(parent, pwm);  in export_store()
275 static ssize_t unexport_store(struct device *parent,  in unexport_store()  argument
279 	struct pwm_chip *chip = dev_get_drvdata(parent);  in unexport_store()
290 	ret = pwm_unexport_child(parent, &chip->pwms[hwpwm]);  in unexport_store()
296 static ssize_t npwm_show(struct device *parent, struct device_attribute *attr,  in npwm_show()  argument
299 	const struct pwm_chip *chip = dev_get_drvdata(parent);  in npwm_show()
319 static int pwmchip_sysfs_match(struct device *parent, const void *data)  in pwmchip_sysfs_match()  argument
321 	return dev_get_drvdata(parent) == data;  in pwmchip_sysfs_match()
326 	struct device *parent;  in pwmchip_sysfs_export()  local
332 	parent = device_create(&pwm_class, chip->dev, MKDEV(0, 0), chip,  in pwmchip_sysfs_export()
334 	if (IS_ERR(parent)) {  in pwmchip_sysfs_export()
342 	struct device *parent;  in pwmchip_sysfs_unexport()  local
344 	parent = class_find_device(&pwm_class, NULL, chip,  in pwmchip_sysfs_unexport()
346 	if (parent) {  in pwmchip_sysfs_unexport()
348 		put_device(parent);  in pwmchip_sysfs_unexport()
349 		device_unregister(parent);  in pwmchip_sysfs_unexport()