72 static void free_pwms(struct pwm_chip *chip)  in free_pwms()  argument
76 	for (i = 0; i < chip->npwm; i++) {  in free_pwms()
77 		struct pwm_device *pwm = &chip->pwms[i];  in free_pwms()
81 	bitmap_clear(allocated_pwms, chip->base, chip->npwm);  in free_pwms()
83 	kfree(chip->pwms);  in free_pwms()
84 	chip->pwms = NULL;  in free_pwms()
89 	struct pwm_chip *chip;  in pwmchip_find_by_name()  local
96 	list_for_each_entry(chip, &pwm_chips, list) {  in pwmchip_find_by_name()
97 		const char *chip_name = dev_name(chip->dev);  in pwmchip_find_by_name()
101 			return chip;  in pwmchip_find_by_name()
117 	if (!try_module_get(pwm->chip->ops->owner))  in pwm_device_request()
120 	if (pwm->chip->ops->request) {  in pwm_device_request()
121 		err = pwm->chip->ops->request(pwm->chip, pwm);  in pwm_device_request()
123 			module_put(pwm->chip->ops->owner);  in pwm_device_request()
180 static void of_pwmchip_add(struct pwm_chip *chip)  in of_pwmchip_add()  argument
182 	if (!chip->dev || !chip->dev->of_node)  in of_pwmchip_add()
185 	if (!chip->of_xlate) {  in of_pwmchip_add()
186 		chip->of_xlate = of_pwm_simple_xlate;  in of_pwmchip_add()
187 		chip->of_pwm_n_cells = 2;  in of_pwmchip_add()
190 	of_node_get(chip->dev->of_node);  in of_pwmchip_add()
193 static void of_pwmchip_remove(struct pwm_chip *chip)  in of_pwmchip_remove()  argument
195 	if (chip->dev)  in of_pwmchip_remove()
196 		of_node_put(chip->dev->of_node);  in of_pwmchip_remove()
232 int pwmchip_add(struct pwm_chip *chip)  in pwmchip_add()  argument
238 	if (!chip || !chip->dev || !chip->ops || !chip->ops->config ||  in pwmchip_add()
239 	    !chip->ops->enable || !chip->ops->disable || !chip->npwm)  in pwmchip_add()
244 	ret = alloc_pwms(chip->base, chip->npwm);  in pwmchip_add()
248 	chip->pwms = kzalloc(chip->npwm * sizeof(*pwm), GFP_KERNEL);  in pwmchip_add()
249 	if (!chip->pwms) {  in pwmchip_add()
254 	chip->base = ret;  in pwmchip_add()
256 	for (i = 0; i < chip->npwm; i++) {  in pwmchip_add()
257 		pwm = &chip->pwms[i];  in pwmchip_add()
259 		pwm->chip = chip;  in pwmchip_add()
260 		pwm->pwm = chip->base + i;  in pwmchip_add()
266 	bitmap_set(allocated_pwms, chip->base, chip->npwm);  in pwmchip_add()
268 	INIT_LIST_HEAD(&chip->list);  in pwmchip_add()
269 	list_add(&chip->list, &pwm_chips);  in pwmchip_add()
274 		of_pwmchip_add(chip);  in pwmchip_add()
276 	pwmchip_sysfs_export(chip);  in pwmchip_add()
291 int pwmchip_remove(struct pwm_chip *chip)  in pwmchip_remove()  argument
298 	for (i = 0; i < chip->npwm; i++) {  in pwmchip_remove()
299 		struct pwm_device *pwm = &chip->pwms[i];  in pwmchip_remove()
307 	list_del_init(&chip->list);  in pwmchip_remove()
310 		of_pwmchip_remove(chip);  in pwmchip_remove()
312 	free_pwms(chip);  in pwmchip_remove()
314 	pwmchip_sysfs_unexport(chip);  in pwmchip_remove()
366 struct pwm_device *pwm_request_from_chip(struct pwm_chip *chip,  in pwm_request_from_chip()  argument
373 	if (!chip || index >= chip->npwm)  in pwm_request_from_chip()
377 	pwm = &chip->pwms[index];  in pwm_request_from_chip()
413 	err = pwm->chip->ops->config(pwm->chip, pwm, duty_ns, period_ns);  in pwm_config()
435 	if (!pwm || !pwm->chip->ops)  in pwm_set_polarity()
438 	if (!pwm->chip->ops->set_polarity)  in pwm_set_polarity()
444 	err = pwm->chip->ops->set_polarity(pwm->chip, pwm, polarity);  in pwm_set_polarity()
461 		return pwm->chip->ops->enable(pwm->chip, pwm);  in pwm_enable()
474 		pwm->chip->ops->disable(pwm->chip, pwm);  in pwm_disable()
480 	struct pwm_chip *chip;  in of_node_to_pwmchip()  local
484 	list_for_each_entry(chip, &pwm_chips, list)  in of_node_to_pwmchip()
485 		if (chip->dev && chip->dev->of_node == np) {  in of_node_to_pwmchip()
487 			return chip;  in of_node_to_pwmchip()
604 	struct pwm_chip *chip = NULL;  in pwm_get()  local
665 	chip = pwmchip_find_by_name(chosen->provider);  in pwm_get()
666 	if (!chip)  in pwm_get()
669 	pwm = pwm_request_from_chip(chip, chosen->index, con_id ?: dev_id);  in pwm_get()
698 	if (pwm->chip->ops->free)  in pwm_put()
699 		pwm->chip->ops->free(pwm->chip, pwm);  in pwm_put()
703 	module_put(pwm->chip->ops->owner);  in pwm_put()
805 	return pwm->chip->can_sleep;  in pwm_can_sleep()
810 static void pwm_dbg_show(struct pwm_chip *chip, struct seq_file *s)  in pwm_dbg_show()  argument
814 	for (i = 0; i < chip->npwm; i++) {  in pwm_dbg_show()
815 		struct pwm_device *pwm = &chip->pwms[i];  in pwm_dbg_show()
851 	struct pwm_chip *chip = list_entry(v, struct pwm_chip, list);  in pwm_seq_show()  local
854 		   chip->dev->bus ? chip->dev->bus->name : "no-bus",  in pwm_seq_show()
855 		   dev_name(chip->dev), chip->npwm,  in pwm_seq_show()
856 		   (chip->npwm != 1) ? "s" : "");  in pwm_seq_show()
858 	if (chip->ops->dbg_show)  in pwm_seq_show()
859 		chip->ops->dbg_show(chip, s);  in pwm_seq_show()
861 		pwm_dbg_show(chip, s);  in pwm_seq_show()