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
79 		radix_tree_delete(&pwm_tree, pwm->pwm);  in free_pwms()
111 static int pwm_device_request(struct pwm_device *pwm, const char *label)  in pwm_device_request()  argument
115 	if (test_bit(PWMF_REQUESTED, &pwm->flags))  in pwm_device_request()
118 	if (!try_module_get(pwm->chip->ops->owner))  in pwm_device_request()
121 	if (pwm->chip->ops->request) {  in pwm_device_request()
122 		err = pwm->chip->ops->request(pwm->chip, pwm);  in pwm_device_request()
124 			module_put(pwm->chip->ops->owner);  in pwm_device_request()
129 	set_bit(PWMF_REQUESTED, &pwm->flags);  in pwm_device_request()
130 	pwm->label = label;  in pwm_device_request()
138 	struct pwm_device *pwm;  in of_pwm_xlate_with_flags()  local
151 	pwm = pwm_request_from_chip(pc, args->args[0], NULL);  in of_pwm_xlate_with_flags()
152 	if (IS_ERR(pwm))  in of_pwm_xlate_with_flags()
153 		return pwm;  in of_pwm_xlate_with_flags()
155 	pwm->args.period = args->args[1];  in of_pwm_xlate_with_flags()
156 	pwm->args.polarity = PWM_POLARITY_NORMAL;  in of_pwm_xlate_with_flags()
159 		pwm->args.polarity = PWM_POLARITY_INVERSED;  in of_pwm_xlate_with_flags()
161 	return pwm;  in of_pwm_xlate_with_flags()
168 	struct pwm_device *pwm;  in of_pwm_simple_xlate()  local
181 	pwm = pwm_request_from_chip(pc, args->args[0], NULL);  in of_pwm_simple_xlate()
182 	if (IS_ERR(pwm))  in of_pwm_simple_xlate()
183 		return pwm;  in of_pwm_simple_xlate()
185 	pwm->args.period = args->args[1];  in of_pwm_simple_xlate()
187 	return pwm;  in of_pwm_simple_xlate()
216 int pwm_set_chip_data(struct pwm_device *pwm, void *data)  in pwm_set_chip_data()  argument
218 	if (!pwm)  in pwm_set_chip_data()
221 	pwm->chip_data = data;  in pwm_set_chip_data()
233 void *pwm_get_chip_data(struct pwm_device *pwm)  in pwm_get_chip_data()  argument
235 	return pwm ? pwm->chip_data : NULL;  in pwm_get_chip_data()
266 	struct pwm_device *pwm;  in pwmchip_add_with_polarity()  local
282 	chip->pwms = kcalloc(chip->npwm, sizeof(*pwm), GFP_KERNEL);  in pwmchip_add_with_polarity()
291 		pwm = &chip->pwms[i];  in pwmchip_add_with_polarity()
293 		pwm->chip = chip;  in pwmchip_add_with_polarity()
294 		pwm->pwm = chip->base + i;  in pwmchip_add_with_polarity()
295 		pwm->hwpwm = i;  in pwmchip_add_with_polarity()
296 		pwm->state.polarity = polarity;  in pwmchip_add_with_polarity()
299 			chip->ops->get_state(chip, pwm, &pwm->state);  in pwmchip_add_with_polarity()
301 		radix_tree_insert(&pwm_tree, pwm->pwm, pwm);  in pwmchip_add_with_polarity()
356 		struct pwm_device *pwm = &chip->pwms[i];  in pwmchip_remove()  local
358 		if (test_bit(PWMF_REQUESTED, &pwm->flags)) {  in pwmchip_remove()
389 struct pwm_device *pwm_request(int pwm, const char *label)  in pwm_request()  argument
394 	if (pwm < 0 || pwm >= MAX_PWMS)  in pwm_request()
399 	dev = pwm_to_device(pwm);  in pwm_request()
430 	struct pwm_device *pwm;  in pwm_request_from_chip()  local
437 	pwm = &chip->pwms[index];  in pwm_request_from_chip()
439 	err = pwm_device_request(pwm, label);  in pwm_request_from_chip()
441 		pwm = ERR_PTR(err);  in pwm_request_from_chip()
444 	return pwm;  in pwm_request_from_chip()
454 void pwm_free(struct pwm_device *pwm)  in pwm_free()  argument
456 	pwm_put(pwm);  in pwm_free()
467 int pwm_apply_state(struct pwm_device *pwm, struct pwm_state *state)  in pwm_apply_state()  argument
471 	if (!pwm || !state || !state->period ||  in pwm_apply_state()
475 	if (!memcmp(state, &pwm->state, sizeof(*state)))  in pwm_apply_state()
478 	if (pwm->chip->ops->apply) {  in pwm_apply_state()
479 		err = pwm->chip->ops->apply(pwm->chip, pwm, state);  in pwm_apply_state()
483 		pwm->state = *state;  in pwm_apply_state()
488 		if (state->polarity != pwm->state.polarity) {  in pwm_apply_state()
489 			if (!pwm->chip->ops->set_polarity)  in pwm_apply_state()
497 			if (pwm->state.enabled) {  in pwm_apply_state()
498 				pwm->chip->ops->disable(pwm->chip, pwm);  in pwm_apply_state()
499 				pwm->state.enabled = false;  in pwm_apply_state()
502 			err = pwm->chip->ops->set_polarity(pwm->chip, pwm,  in pwm_apply_state()
507 			pwm->state.polarity = state->polarity;  in pwm_apply_state()
510 		if (state->period != pwm->state.period ||  in pwm_apply_state()
511 		    state->duty_cycle != pwm->state.duty_cycle) {  in pwm_apply_state()
512 			err = pwm->chip->ops->config(pwm->chip, pwm,  in pwm_apply_state()
518 			pwm->state.duty_cycle = state->duty_cycle;  in pwm_apply_state()
519 			pwm->state.period = state->period;  in pwm_apply_state()
522 		if (state->enabled != pwm->state.enabled) {  in pwm_apply_state()
524 				err = pwm->chip->ops->enable(pwm->chip, pwm);  in pwm_apply_state()
528 				pwm->chip->ops->disable(pwm->chip, pwm);  in pwm_apply_state()
531 			pwm->state.enabled = state->enabled;  in pwm_apply_state()
547 int pwm_capture(struct pwm_device *pwm, struct pwm_capture *result,  in pwm_capture()  argument
552 	if (!pwm || !pwm->chip->ops)  in pwm_capture()
555 	if (!pwm->chip->ops->capture)  in pwm_capture()
559 	err = pwm->chip->ops->capture(pwm->chip, pwm, result, timeout);  in pwm_capture()
574 int pwm_adjust_config(struct pwm_device *pwm)  in pwm_adjust_config()  argument
579 	pwm_get_args(pwm, &pargs);  in pwm_adjust_config()
580 	pwm_get_state(pwm, &state);  in pwm_adjust_config()
595 		return pwm_apply_state(pwm, &state);  in pwm_adjust_config()
618 	return pwm_apply_state(pwm, &state);  in pwm_adjust_config()
660 	struct pwm_device *pwm = NULL;  in of_pwm_get()  local
684 		pwm = ERR_CAST(pc);  in of_pwm_get()
688 	pwm = pc->of_xlate(pc, &args);  in of_pwm_get()
689 	if (IS_ERR(pwm))  in of_pwm_get()
704 	pwm->label = con_id;  in of_pwm_get()
709 	return pwm;  in of_pwm_get()
765 	struct pwm_device *pwm;  in pwm_get()  local
847 	pwm = pwm_request_from_chip(chip, chosen->index, con_id ?: dev_id);  in pwm_get()
848 	if (IS_ERR(pwm))  in pwm_get()
849 		return pwm;  in pwm_get()
851 	pwm->args.period = chosen->period;  in pwm_get()
852 	pwm->args.polarity = chosen->polarity;  in pwm_get()
854 	return pwm;  in pwm_get()
862 void pwm_put(struct pwm_device *pwm)  in pwm_put()  argument
864 	if (!pwm)  in pwm_put()
869 	if (!test_and_clear_bit(PWMF_REQUESTED, &pwm->flags)) {  in pwm_put()
874 	if (pwm->chip->ops->free)  in pwm_put()
875 		pwm->chip->ops->free(pwm->chip, pwm);  in pwm_put()
877 	pwm->label = NULL;  in pwm_put()
879 	module_put(pwm->chip->ops->owner);  in pwm_put()
903 	struct pwm_device **ptr, *pwm;  in devm_pwm_get()  local
909 	pwm = pwm_get(dev, con_id);  in devm_pwm_get()
910 	if (!IS_ERR(pwm)) {  in devm_pwm_get()
911 		*ptr = pwm;  in devm_pwm_get()
917 	return pwm;  in devm_pwm_get()
936 	struct pwm_device **ptr, *pwm;  in devm_of_pwm_get()  local
942 	pwm = of_pwm_get(np, con_id);  in devm_of_pwm_get()
943 	if (!IS_ERR(pwm)) {  in devm_of_pwm_get()
944 		*ptr = pwm;  in devm_of_pwm_get()
950 	return pwm;  in devm_of_pwm_get()
973 void devm_pwm_put(struct device *dev, struct pwm_device *pwm)  in devm_pwm_put()  argument
975 	WARN_ON(devres_release(dev, devm_pwm_release, devm_pwm_match, pwm));  in devm_pwm_put()
985 		struct pwm_device *pwm = &chip->pwms[i];  in pwm_dbg_show()  local
988 		pwm_get_state(pwm, &state);  in pwm_dbg_show()
990 		seq_printf(s, " pwm-%-3d (%-20.20s):", i, pwm->label);  in pwm_dbg_show()
992 		if (test_bit(PWMF_REQUESTED, &pwm->flags))  in pwm_dbg_show()