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()
240 int pwmchip_add_with_polarity(struct pwm_chip *chip,  in pwmchip_add_with_polarity()  argument
247 	if (!chip || !chip->dev || !chip->ops || !chip->ops->config ||  in pwmchip_add_with_polarity()
248 	    !chip->ops->enable || !chip->ops->disable || !chip->npwm)  in pwmchip_add_with_polarity()
253 	ret = alloc_pwms(chip->base, chip->npwm);  in pwmchip_add_with_polarity()
257 	chip->pwms = kzalloc(chip->npwm * sizeof(*pwm), GFP_KERNEL);  in pwmchip_add_with_polarity()
258 	if (!chip->pwms) {  in pwmchip_add_with_polarity()
263 	chip->base = ret;  in pwmchip_add_with_polarity()
265 	for (i = 0; i < chip->npwm; i++) {  in pwmchip_add_with_polarity()
266 		pwm = &chip->pwms[i];  in pwmchip_add_with_polarity()
268 		pwm->chip = chip;  in pwmchip_add_with_polarity()
269 		pwm->pwm = chip->base + i;  in pwmchip_add_with_polarity()
277 	bitmap_set(allocated_pwms, chip->base, chip->npwm);  in pwmchip_add_with_polarity()
279 	INIT_LIST_HEAD(&chip->list);  in pwmchip_add_with_polarity()
280 	list_add(&chip->list, &pwm_chips);  in pwmchip_add_with_polarity()
285 		of_pwmchip_add(chip);  in pwmchip_add_with_polarity()
287 	pwmchip_sysfs_export(chip);  in pwmchip_add_with_polarity()
304 int pwmchip_add(struct pwm_chip *chip)  in pwmchip_add()  argument
306 	return pwmchip_add_with_polarity(chip, PWM_POLARITY_NORMAL);  in pwmchip_add()
319 int pwmchip_remove(struct pwm_chip *chip)  in pwmchip_remove()  argument
326 	for (i = 0; i < chip->npwm; i++) {  in pwmchip_remove()
327 		struct pwm_device *pwm = &chip->pwms[i];  in pwmchip_remove()
335 	list_del_init(&chip->list);  in pwmchip_remove()
338 		of_pwmchip_remove(chip);  in pwmchip_remove()
340 	free_pwms(chip);  in pwmchip_remove()
342 	pwmchip_sysfs_unexport(chip);  in pwmchip_remove()
397 struct pwm_device *pwm_request_from_chip(struct pwm_chip *chip,  in pwm_request_from_chip()  argument
404 	if (!chip || index >= chip->npwm)  in pwm_request_from_chip()
408 	pwm = &chip->pwms[index];  in pwm_request_from_chip()
446 	err = pwm->chip->ops->config(pwm->chip, pwm, duty_ns, period_ns);  in pwm_config()
471 	if (!pwm || !pwm->chip->ops)  in pwm_set_polarity()
474 	if (!pwm->chip->ops->set_polarity)  in pwm_set_polarity()
484 	err = pwm->chip->ops->set_polarity(pwm->chip, pwm, polarity);  in pwm_set_polarity()
512 		err = pwm->chip->ops->enable(pwm->chip, pwm);  in pwm_enable()
530 		pwm->chip->ops->disable(pwm->chip, pwm);  in pwm_disable()
536 	struct pwm_chip *chip;  in of_node_to_pwmchip()  local
540 	list_for_each_entry(chip, &pwm_chips, list)  in of_node_to_pwmchip()
541 		if (chip->dev && chip->dev->of_node == np) {  in of_node_to_pwmchip()
543 			return chip;  in of_node_to_pwmchip()
683 	struct pwm_chip *chip = NULL;  in pwm_get()  local
746 	chip = pwmchip_find_by_name(chosen->provider);  in pwm_get()
747 	if (!chip)  in pwm_get()
750 	pwm = pwm_request_from_chip(chip, chosen->index, con_id ?: dev_id);  in pwm_get()
779 	if (pwm->chip->ops->free)  in pwm_put()
780 		pwm->chip->ops->free(pwm->chip, pwm);  in pwm_put()
784 	module_put(pwm->chip->ops->owner);  in pwm_put()
892 	return pwm->chip->can_sleep;  in pwm_can_sleep()
897 static void pwm_dbg_show(struct pwm_chip *chip, struct seq_file *s)  in pwm_dbg_show()  argument
901 	for (i = 0; i < chip->npwm; i++) {  in pwm_dbg_show()
902 		struct pwm_device *pwm = &chip->pwms[i];  in pwm_dbg_show()
938 	struct pwm_chip *chip = list_entry(v, struct pwm_chip, list);  in pwm_seq_show()  local
941 		   chip->dev->bus ? chip->dev->bus->name : "no-bus",  in pwm_seq_show()
942 		   dev_name(chip->dev), chip->npwm,  in pwm_seq_show()
943 		   (chip->npwm != 1) ? "s" : "");  in pwm_seq_show()
945 	if (chip->ops->dbg_show)  in pwm_seq_show()
946 		chip->ops->dbg_show(chip, s);  in pwm_seq_show()
948 		pwm_dbg_show(chip, s);  in pwm_seq_show()