44 static struct pwm_device *pwm_to_device(unsigned int pwm)  in pwm_to_device()  argument
46 	return radix_tree_lookup(&pwm_tree, pwm);  in pwm_to_device()
49 static int alloc_pwms(int pwm, unsigned int count)  in alloc_pwms()  argument
54 	if (pwm >= MAX_PWMS)  in alloc_pwms()
57 	if (pwm >= 0)  in alloc_pwms()
58 		from = pwm;  in alloc_pwms()
63 	if (pwm >= 0 && start != pwm)  in alloc_pwms()
77 		struct pwm_device *pwm = &chip->pwms[i];  in free_pwms()  local
78 		radix_tree_delete(&pwm_tree, pwm->pwm);  in free_pwms()
110 static int pwm_device_request(struct pwm_device *pwm, const char *label)  in pwm_device_request()  argument
114 	if (test_bit(PWMF_REQUESTED, &pwm->flags))  in pwm_device_request()
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()
128 	set_bit(PWMF_REQUESTED, &pwm->flags);  in pwm_device_request()
129 	pwm->label = label;  in pwm_device_request()
137 	struct pwm_device *pwm;  in of_pwm_xlate_with_flags()  local
145 	pwm = pwm_request_from_chip(pc, args->args[0], NULL);  in of_pwm_xlate_with_flags()
146 	if (IS_ERR(pwm))  in of_pwm_xlate_with_flags()
147 		return pwm;  in of_pwm_xlate_with_flags()
149 	pwm_set_period(pwm, args->args[1]);  in of_pwm_xlate_with_flags()
152 		pwm_set_polarity(pwm, PWM_POLARITY_INVERSED);  in of_pwm_xlate_with_flags()
154 		pwm_set_polarity(pwm, PWM_POLARITY_NORMAL);  in of_pwm_xlate_with_flags()
156 	return pwm;  in of_pwm_xlate_with_flags()
163 	struct pwm_device *pwm;  in of_pwm_simple_xlate()  local
171 	pwm = pwm_request_from_chip(pc, args->args[0], NULL);  in of_pwm_simple_xlate()
172 	if (IS_ERR(pwm))  in of_pwm_simple_xlate()
173 		return pwm;  in of_pwm_simple_xlate()
175 	pwm_set_period(pwm, args->args[1]);  in of_pwm_simple_xlate()
177 	return pwm;  in of_pwm_simple_xlate()
206 int pwm_set_chip_data(struct pwm_device *pwm, void *data)  in pwm_set_chip_data()  argument
208 	if (!pwm)  in pwm_set_chip_data()
211 	pwm->chip_data = data;  in pwm_set_chip_data()
223 void *pwm_get_chip_data(struct pwm_device *pwm)  in pwm_get_chip_data()  argument
225 	return pwm ? pwm->chip_data : NULL;  in pwm_get_chip_data()
243 	struct pwm_device *pwm;  in pwmchip_add_with_polarity()  local
257 	chip->pwms = kzalloc(chip->npwm * sizeof(*pwm), GFP_KERNEL);  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()
270 		pwm->hwpwm = i;  in pwmchip_add_with_polarity()
271 		pwm->polarity = polarity;  in pwmchip_add_with_polarity()
272 		mutex_init(&pwm->lock);  in pwmchip_add_with_polarity()
274 		radix_tree_insert(&pwm_tree, pwm->pwm, pwm);  in pwmchip_add_with_polarity()
327 		struct pwm_device *pwm = &chip->pwms[i];  in pwmchip_remove()  local
329 		if (test_bit(PWMF_REQUESTED, &pwm->flags)) {  in pwmchip_remove()
360 struct pwm_device *pwm_request(int pwm, const char *label)  in pwm_request()  argument
365 	if (pwm < 0 || pwm >= MAX_PWMS)  in pwm_request()
370 	dev = pwm_to_device(pwm);  in pwm_request()
401 	struct pwm_device *pwm;  in pwm_request_from_chip()  local
408 	pwm = &chip->pwms[index];  in pwm_request_from_chip()
410 	err = pwm_device_request(pwm, label);  in pwm_request_from_chip()
412 		pwm = ERR_PTR(err);  in pwm_request_from_chip()
415 	return pwm;  in pwm_request_from_chip()
425 void pwm_free(struct pwm_device *pwm)  in pwm_free()  argument
427 	pwm_put(pwm);  in pwm_free()
439 int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns)  in pwm_config()  argument
443 	if (!pwm || duty_ns < 0 || period_ns <= 0 || duty_ns > period_ns)  in pwm_config()
446 	err = pwm->chip->ops->config(pwm->chip, pwm, duty_ns, period_ns);  in pwm_config()
450 	pwm->duty_cycle = duty_ns;  in pwm_config()
451 	pwm->period = period_ns;  in pwm_config()
467 int pwm_set_polarity(struct pwm_device *pwm, enum pwm_polarity polarity)  in pwm_set_polarity()  argument
471 	if (!pwm || !pwm->chip->ops)  in pwm_set_polarity()
474 	if (!pwm->chip->ops->set_polarity)  in pwm_set_polarity()
477 	mutex_lock(&pwm->lock);  in pwm_set_polarity()
479 	if (pwm_is_enabled(pwm)) {  in pwm_set_polarity()
484 	err = pwm->chip->ops->set_polarity(pwm->chip, pwm, polarity);  in pwm_set_polarity()
488 	pwm->polarity = polarity;  in pwm_set_polarity()
491 	mutex_unlock(&pwm->lock);  in pwm_set_polarity()
502 int pwm_enable(struct pwm_device *pwm)  in pwm_enable()  argument
506 	if (!pwm)  in pwm_enable()
509 	mutex_lock(&pwm->lock);  in pwm_enable()
511 	if (!test_and_set_bit(PWMF_ENABLED, &pwm->flags)) {  in pwm_enable()
512 		err = pwm->chip->ops->enable(pwm->chip, pwm);  in pwm_enable()
514 			clear_bit(PWMF_ENABLED, &pwm->flags);  in pwm_enable()
517 	mutex_unlock(&pwm->lock);  in pwm_enable()
527 void pwm_disable(struct pwm_device *pwm)  in pwm_disable()  argument
529 	if (pwm && test_and_clear_bit(PWMF_ENABLED, &pwm->flags))  in pwm_disable()
530 		pwm->chip->ops->disable(pwm->chip, pwm);  in pwm_disable()
572 	struct pwm_device *pwm = NULL;  in of_pwm_get()  local
594 		pwm = ERR_CAST(pc);  in of_pwm_get()
601 		pwm = ERR_PTR(-EINVAL);  in of_pwm_get()
605 	pwm = pc->of_xlate(pc, &args);  in of_pwm_get()
606 	if (IS_ERR(pwm))  in of_pwm_get()
621 	pwm->label = con_id;  in of_pwm_get()
626 	return pwm;  in of_pwm_get()
681 	struct pwm_device *pwm = ERR_PTR(-EPROBE_DEFER);  in pwm_get()  local
742 		pwm = ERR_PTR(-ENODEV);  in pwm_get()
750 	pwm = pwm_request_from_chip(chip, chosen->index, con_id ?: dev_id);  in pwm_get()
751 	if (IS_ERR(pwm))  in pwm_get()
754 	pwm_set_period(pwm, chosen->period);  in pwm_get()
755 	pwm_set_polarity(pwm, chosen->polarity);  in pwm_get()
759 	return pwm;  in pwm_get()
767 void pwm_put(struct pwm_device *pwm)  in pwm_put()  argument
769 	if (!pwm)  in pwm_put()
774 	if (!test_and_clear_bit(PWMF_REQUESTED, &pwm->flags)) {  in pwm_put()
779 	if (pwm->chip->ops->free)  in pwm_put()
780 		pwm->chip->ops->free(pwm->chip, pwm);  in pwm_put()
782 	pwm->label = NULL;  in pwm_put()
784 	module_put(pwm->chip->ops->owner);  in pwm_put()
808 	struct pwm_device **ptr, *pwm;  in devm_pwm_get()  local
814 	pwm = pwm_get(dev, con_id);  in devm_pwm_get()
815 	if (!IS_ERR(pwm)) {  in devm_pwm_get()
816 		*ptr = pwm;  in devm_pwm_get()
822 	return pwm;  in devm_pwm_get()
841 	struct pwm_device **ptr, *pwm;  in devm_of_pwm_get()  local
847 	pwm = of_pwm_get(np, con_id);  in devm_of_pwm_get()
848 	if (!IS_ERR(pwm)) {  in devm_of_pwm_get()
849 		*ptr = pwm;  in devm_of_pwm_get()
855 	return pwm;  in devm_of_pwm_get()
878 void devm_pwm_put(struct device *dev, struct pwm_device *pwm)  in devm_pwm_put()  argument
880 	WARN_ON(devres_release(dev, devm_pwm_release, devm_pwm_match, pwm));  in devm_pwm_put()
890 bool pwm_can_sleep(struct pwm_device *pwm)  in pwm_can_sleep()  argument
892 	return pwm->chip->can_sleep;  in pwm_can_sleep()
902 		struct pwm_device *pwm = &chip->pwms[i];  in pwm_dbg_show()  local
904 		seq_printf(s, " pwm-%-3d (%-20.20s):", i, pwm->label);  in pwm_dbg_show()
906 		if (test_bit(PWMF_REQUESTED, &pwm->flags))  in pwm_dbg_show()
909 		if (pwm_is_enabled(pwm))  in pwm_dbg_show()