32 static struct pwm_device *pwm_to_device(unsigned int pwm)  in pwm_to_device()  argument
34 	return radix_tree_lookup(&pwm_tree, pwm);  in pwm_to_device()
37 static int alloc_pwms(int pwm, unsigned int count)  in alloc_pwms()  argument
42 	if (pwm >= MAX_PWMS)  in alloc_pwms()
45 	if (pwm >= 0)  in alloc_pwms()
46 		from = pwm;  in alloc_pwms()
51 	if (pwm >= 0 && start != pwm)  in alloc_pwms()
65 		struct pwm_device *pwm = &chip->pwms[i];  in free_pwms()  local
67 		radix_tree_delete(&pwm_tree, pwm->pwm);  in free_pwms()
99 static int pwm_device_request(struct pwm_device *pwm, const char *label)  in pwm_device_request()  argument
103 	if (test_bit(PWMF_REQUESTED, &pwm->flags))  in pwm_device_request()
106 	if (!try_module_get(pwm->chip->ops->owner))  in pwm_device_request()
109 	if (pwm->chip->ops->request) {  in pwm_device_request()
110 		err = pwm->chip->ops->request(pwm->chip, pwm);  in pwm_device_request()
112 			module_put(pwm->chip->ops->owner);  in pwm_device_request()
117 	set_bit(PWMF_REQUESTED, &pwm->flags);  in pwm_device_request()
118 	pwm->label = label;  in pwm_device_request()
126 	struct pwm_device *pwm;  in of_pwm_xlate_with_flags()  local
139 	pwm = pwm_request_from_chip(pc, args->args[0], NULL);  in of_pwm_xlate_with_flags()
140 	if (IS_ERR(pwm))  in of_pwm_xlate_with_flags()
141 		return pwm;  in of_pwm_xlate_with_flags()
143 	pwm->args.period = args->args[1];  in of_pwm_xlate_with_flags()
144 	pwm->args.polarity = PWM_POLARITY_NORMAL;  in of_pwm_xlate_with_flags()
147 		pwm->args.polarity = PWM_POLARITY_INVERSED;  in of_pwm_xlate_with_flags()
149 	return pwm;  in of_pwm_xlate_with_flags()
156 	struct pwm_device *pwm;  in of_pwm_simple_xlate()  local
169 	pwm = pwm_request_from_chip(pc, args->args[0], NULL);  in of_pwm_simple_xlate()
170 	if (IS_ERR(pwm))  in of_pwm_simple_xlate()
171 		return pwm;  in of_pwm_simple_xlate()
173 	pwm->args.period = args->args[1];  in of_pwm_simple_xlate()
175 	return pwm;  in of_pwm_simple_xlate()
204 int pwm_set_chip_data(struct pwm_device *pwm, void *data)  in pwm_set_chip_data()  argument
206 	if (!pwm)  in pwm_set_chip_data()
209 	pwm->chip_data = data;  in pwm_set_chip_data()
221 void *pwm_get_chip_data(struct pwm_device *pwm)  in pwm_get_chip_data()  argument
223 	return pwm ? pwm->chip_data : NULL;  in pwm_get_chip_data()
254 	struct pwm_device *pwm;  in pwmchip_add_with_polarity()  local
270 	chip->pwms = kcalloc(chip->npwm, sizeof(*pwm), GFP_KERNEL);  in pwmchip_add_with_polarity()
279 		pwm = &chip->pwms[i];  in pwmchip_add_with_polarity()
281 		pwm->chip = chip;  in pwmchip_add_with_polarity()
282 		pwm->pwm = chip->base + i;  in pwmchip_add_with_polarity()
283 		pwm->hwpwm = i;  in pwmchip_add_with_polarity()
284 		pwm->state.polarity = polarity;  in pwmchip_add_with_polarity()
287 			chip->ops->get_state(chip, pwm, &pwm->state);  in pwmchip_add_with_polarity()
289 		radix_tree_insert(&pwm_tree, pwm->pwm, pwm);  in pwmchip_add_with_polarity()
346 		struct pwm_device *pwm = &chip->pwms[i];  in pwmchip_remove()  local
348 		if (test_bit(PWMF_REQUESTED, &pwm->flags)) {  in pwmchip_remove()
377 struct pwm_device *pwm_request(int pwm, const char *label)  in pwm_request()  argument
382 	if (pwm < 0 || pwm >= MAX_PWMS)  in pwm_request()
387 	dev = pwm_to_device(pwm);  in pwm_request()
418 	struct pwm_device *pwm;  in pwm_request_from_chip()  local
425 	pwm = &chip->pwms[index];  in pwm_request_from_chip()
427 	err = pwm_device_request(pwm, label);  in pwm_request_from_chip()
429 		pwm = ERR_PTR(err);  in pwm_request_from_chip()
432 	return pwm;  in pwm_request_from_chip()
442 void pwm_free(struct pwm_device *pwm)  in pwm_free()  argument
444 	pwm_put(pwm);  in pwm_free()
453 int pwm_apply_state(struct pwm_device *pwm, const struct pwm_state *state)  in pwm_apply_state()  argument
458 	if (!pwm || !state || !state->period ||  in pwm_apply_state()
462 	chip = pwm->chip;  in pwm_apply_state()
464 	if (state->period == pwm->state.period &&  in pwm_apply_state()
465 	    state->duty_cycle == pwm->state.duty_cycle &&  in pwm_apply_state()
466 	    state->polarity == pwm->state.polarity &&  in pwm_apply_state()
467 	    state->enabled == pwm->state.enabled)  in pwm_apply_state()
471 		err = chip->ops->apply(chip, pwm, state);  in pwm_apply_state()
475 		pwm->state = *state;  in pwm_apply_state()
480 		if (state->polarity != pwm->state.polarity) {  in pwm_apply_state()
489 			if (pwm->state.enabled) {  in pwm_apply_state()
490 				chip->ops->disable(chip, pwm);  in pwm_apply_state()
491 				pwm->state.enabled = false;  in pwm_apply_state()
494 			err = chip->ops->set_polarity(chip, pwm,  in pwm_apply_state()
499 			pwm->state.polarity = state->polarity;  in pwm_apply_state()
502 		if (state->period != pwm->state.period ||  in pwm_apply_state()
503 		    state->duty_cycle != pwm->state.duty_cycle) {  in pwm_apply_state()
504 			err = chip->ops->config(pwm->chip, pwm,  in pwm_apply_state()
510 			pwm->state.duty_cycle = state->duty_cycle;  in pwm_apply_state()
511 			pwm->state.period = state->period;  in pwm_apply_state()
514 		if (state->enabled != pwm->state.enabled) {  in pwm_apply_state()
516 				err = chip->ops->enable(chip, pwm);  in pwm_apply_state()
520 				chip->ops->disable(chip, pwm);  in pwm_apply_state()
523 			pwm->state.enabled = state->enabled;  in pwm_apply_state()
539 int pwm_capture(struct pwm_device *pwm, struct pwm_capture *result,  in pwm_capture()  argument
544 	if (!pwm || !pwm->chip->ops)  in pwm_capture()
547 	if (!pwm->chip->ops->capture)  in pwm_capture()
551 	err = pwm->chip->ops->capture(pwm->chip, pwm, result, timeout);  in pwm_capture()
566 int pwm_adjust_config(struct pwm_device *pwm)  in pwm_adjust_config()  argument
571 	pwm_get_args(pwm, &pargs);  in pwm_adjust_config()
572 	pwm_get_state(pwm, &state);  in pwm_adjust_config()
587 		return pwm_apply_state(pwm, &state);  in pwm_adjust_config()
610 	return pwm_apply_state(pwm, &state);  in pwm_adjust_config()
632 					       struct pwm_device *pwm)  in pwm_device_link_add()  argument
642 		dev_warn(pwm->chip->dev,  in pwm_device_link_add()
647 	dl = device_link_add(dev, pwm->chip->dev, DL_FLAG_AUTOREMOVE_CONSUMER);  in pwm_device_link_add()
650 			dev_name(pwm->chip->dev));  in pwm_device_link_add()
680 	struct pwm_device *pwm = NULL;  in of_pwm_get()  local
705 		pwm = ERR_CAST(pc);  in of_pwm_get()
709 	pwm = pc->of_xlate(pc, &args);  in of_pwm_get()
710 	if (IS_ERR(pwm))  in of_pwm_get()
713 	dl = pwm_device_link_add(dev, pwm);  in of_pwm_get()
716 		pwm_free(pwm);  in of_pwm_get()
717 		pwm = ERR_CAST(dl);  in of_pwm_get()
733 	pwm->label = con_id;  in of_pwm_get()
738 	return pwm;  in of_pwm_get()
783 	struct pwm_device *pwm = ERR_PTR(-ENODEV);  in acpi_pwm_get()  local
807 	pwm = pwm_request_from_chip(chip, args.args[0], NULL);  in acpi_pwm_get()
808 	if (IS_ERR(pwm))  in acpi_pwm_get()
809 		return pwm;  in acpi_pwm_get()
811 	pwm->args.period = args.args[1];  in acpi_pwm_get()
812 	pwm->args.polarity = PWM_POLARITY_NORMAL;  in acpi_pwm_get()
815 		pwm->args.polarity = PWM_POLARITY_INVERSED;  in acpi_pwm_get()
818 	return pwm;  in acpi_pwm_get()
873 	struct pwm_device *pwm;  in pwm_get()  local
887 		pwm = acpi_pwm_get(dev->fwnode);  in pwm_get()
888 		if (!IS_ERR(pwm) || PTR_ERR(pwm) != -ENOENT)  in pwm_get()
889 			return pwm;  in pwm_get()
963 	pwm = pwm_request_from_chip(chip, chosen->index, con_id ?: dev_id);  in pwm_get()
964 	if (IS_ERR(pwm))  in pwm_get()
965 		return pwm;  in pwm_get()
967 	dl = pwm_device_link_add(dev, pwm);  in pwm_get()
969 		pwm_free(pwm);  in pwm_get()
973 	pwm->args.period = chosen->period;  in pwm_get()
974 	pwm->args.polarity = chosen->polarity;  in pwm_get()
976 	return pwm;  in pwm_get()
984 void pwm_put(struct pwm_device *pwm)  in pwm_put()  argument
986 	if (!pwm)  in pwm_put()
991 	if (!test_and_clear_bit(PWMF_REQUESTED, &pwm->flags)) {  in pwm_put()
996 	if (pwm->chip->ops->free)  in pwm_put()
997 		pwm->chip->ops->free(pwm->chip, pwm);  in pwm_put()
999 	pwm_set_chip_data(pwm, NULL);  in pwm_put()
1000 	pwm->label = NULL;  in pwm_put()
1002 	module_put(pwm->chip->ops->owner);  in pwm_put()
1026 	struct pwm_device **ptr, *pwm;  in devm_pwm_get()  local
1032 	pwm = pwm_get(dev, con_id);  in devm_pwm_get()
1033 	if (!IS_ERR(pwm)) {  in devm_pwm_get()
1034 		*ptr = pwm;  in devm_pwm_get()
1040 	return pwm;  in devm_pwm_get()
1059 	struct pwm_device **ptr, *pwm;  in devm_of_pwm_get()  local
1065 	pwm = of_pwm_get(dev, np, con_id);  in devm_of_pwm_get()
1066 	if (!IS_ERR(pwm)) {  in devm_of_pwm_get()
1067 		*ptr = pwm;  in devm_of_pwm_get()
1073 	return pwm;  in devm_of_pwm_get()
1093 	struct pwm_device **ptr, *pwm = ERR_PTR(-ENODEV);  in devm_fwnode_pwm_get()  local
1100 		pwm = of_pwm_get(dev, to_of_node(fwnode), con_id);  in devm_fwnode_pwm_get()
1102 		pwm = acpi_pwm_get(fwnode);  in devm_fwnode_pwm_get()
1104 	if (!IS_ERR(pwm)) {  in devm_fwnode_pwm_get()
1105 		*ptr = pwm;  in devm_fwnode_pwm_get()
1111 	return pwm;  in devm_fwnode_pwm_get()
1134 void devm_pwm_put(struct device *dev, struct pwm_device *pwm)  in devm_pwm_put()  argument
1136 	WARN_ON(devres_release(dev, devm_pwm_release, devm_pwm_match, pwm));  in devm_pwm_put()
1146 		struct pwm_device *pwm = &chip->pwms[i];  in pwm_dbg_show()  local
1149 		pwm_get_state(pwm, &state);  in pwm_dbg_show()
1151 		seq_printf(s, " pwm-%-3d (%-20.20s):", i, pwm->label);  in pwm_dbg_show()
1153 		if (test_bit(PWMF_REQUESTED, &pwm->flags))  in pwm_dbg_show()