drivers/pwm/sysfs.c

31 	struct pwm_export *export = child_to_pwm_export(child);
33 	return export->pwm;
52 	struct pwm_export *export = child_to_pwm_export(child);
53 	struct pwm_device *pwm = export->pwm;
62 	mutex_lock(&export->lock);
66 	mutex_unlock(&export->lock);
87 	struct pwm_export *export = child_to_pwm_export(child);
88 	struct pwm_device *pwm = export->pwm;
97 	mutex_lock(&export->lock);
101 	mutex_unlock(&export->lock);
122 	struct pwm_export *export = child_to_pwm_export(child);
123 	struct pwm_device *pwm = export->pwm;
131 	mutex_lock(&export->lock);
150 	mutex_unlock(&export->lock);
181 	struct pwm_export *export = child_to_pwm_export(child);
182 	struct pwm_device *pwm = export->pwm;
194 	mutex_lock(&export->lock);
198 	mutex_unlock(&export->lock);
236 	struct pwm_export *export = child_to_pwm_export(child);
238 	kfree(export);
243 	struct pwm_export *export;
250 	export = kzalloc(sizeof(*export), GFP_KERNEL);
251 	if (!export) {
256 	export->pwm = pwm;
257 	mutex_init(&export->lock);
259 	export->child.release = pwm_export_release;
260 	export->child.parent = parent;
261 	export->child.devt = MKDEV(0, 0);
262 	export->child.groups = pwm_groups;
263 	dev_set_name(&export->child, "pwm%u", pwm->hwpwm);
265 	ret = device_register(&export->child);
268 		put_device(&export->child);
269 		export = NULL;
336 static DEVICE_ATTR_WO(export);
376 /* takes export->lock on success */
382 	struct pwm_export *export;
391 	export = child_to_pwm_export(child);
394 	mutex_lock(&export->lock);
397 	return export;
400 static int pwm_class_apply_state(struct pwm_export *export,
407 	mutex_unlock(&export->lock);
421 		struct pwm_export *export;
423 		export = pwm_class_get_state(parent, pwm, &state);
424 		if (!export)
428 		if (!export->suspend.enabled) {
430 			mutex_unlock(&export->lock);
434 		state.enabled = export->suspend.enabled;
435 		ret = pwm_class_apply_state(export, pwm, &state);
452 		struct pwm_export *export;
454 		export = pwm_class_get_state(parent, pwm, &state);
455 		if (!export)
462 		export->suspend = state;
465 			mutex_unlock(&export->lock);
470 		ret = pwm_class_apply_state(export, pwm, &state);
516 			 "device_create failed for pwm_chip sysfs export\n");