Lines Matching refs:pwm
38 static struct pwm_device *pwm_to_device(unsigned int pwm) in pwm_to_device() argument
40 return radix_tree_lookup(&pwm_tree, pwm); in pwm_to_device()
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 if (pwm->chip->ops->get_state) { in pwm_device_request()
120 err = pwm->chip->ops->get_state(pwm->chip, pwm, &state); in pwm_device_request()
121 trace_pwm_get(pwm, &state, err); in pwm_device_request()
124 pwm->state = state; in pwm_device_request()
127 pwm->last = pwm->state; in pwm_device_request()
130 set_bit(PWMF_REQUESTED, &pwm->flags); in pwm_device_request()
131 pwm->label = label; in pwm_device_request()
139 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()
160 pwm->args.polarity = PWM_POLARITY_INVERSED; in of_pwm_xlate_with_flags()
163 return pwm; in of_pwm_xlate_with_flags()
170 struct pwm_device *pwm; in of_pwm_single_xlate() local
179 pwm = pwm_request_from_chip(pc, 0, NULL); in of_pwm_single_xlate()
180 if (IS_ERR(pwm)) in of_pwm_single_xlate()
181 return pwm; in of_pwm_single_xlate()
183 pwm->args.period = args->args[0]; in of_pwm_single_xlate()
184 pwm->args.polarity = PWM_POLARITY_NORMAL; in of_pwm_single_xlate()
187 pwm->args.polarity = PWM_POLARITY_INVERSED; in of_pwm_single_xlate()
189 return pwm; in of_pwm_single_xlate()
225 int pwm_set_chip_data(struct pwm_device *pwm, void *data) in pwm_set_chip_data() argument
227 if (!pwm) in pwm_set_chip_data()
230 pwm->chip_data = data; in pwm_set_chip_data()
242 void *pwm_get_chip_data(struct pwm_device *pwm) in pwm_get_chip_data() argument
244 return pwm ? pwm->chip_data : NULL; in pwm_get_chip_data()
272 struct pwm_device *pwm; in pwmchip_add() local
282 chip->pwms = kcalloc(chip->npwm, sizeof(*pwm), GFP_KERNEL); in pwmchip_add()
298 pwm = &chip->pwms[i]; in pwmchip_add()
300 pwm->chip = chip; in pwmchip_add()
301 pwm->pwm = chip->base + i; in pwmchip_add()
302 pwm->hwpwm = i; in pwmchip_add()
304 radix_tree_insert(&pwm_tree, pwm->pwm, pwm); in pwmchip_add()
375 struct pwm_device *pwm_request(int pwm, const char *label) in pwm_request() argument
380 if (pwm < 0 || pwm >= MAX_PWMS) in pwm_request()
385 dev = pwm_to_device(pwm); in pwm_request()
416 struct pwm_device *pwm; in pwm_request_from_chip() local
423 pwm = &chip->pwms[index]; in pwm_request_from_chip()
425 err = pwm_device_request(pwm, label); in pwm_request_from_chip()
427 pwm = ERR_PTR(err); in pwm_request_from_chip()
430 return pwm; in pwm_request_from_chip()
440 void pwm_free(struct pwm_device *pwm) in pwm_free() argument
442 pwm_put(pwm); in pwm_free()
446 static void pwm_apply_state_debug(struct pwm_device *pwm, in pwm_apply_state_debug() argument
449 struct pwm_state *last = &pwm->last; in pwm_apply_state_debug()
450 struct pwm_chip *chip = pwm->chip; in pwm_apply_state_debug()
466 err = chip->ops->get_state(chip, pwm, &s1); in pwm_apply_state_debug()
467 trace_pwm_get(pwm, &s1, err); in pwm_apply_state_debug()
525 err = chip->ops->apply(chip, pwm, &s1); in pwm_apply_state_debug()
526 trace_pwm_apply(pwm, &s1, err); in pwm_apply_state_debug()
533 err = chip->ops->get_state(chip, pwm, last); in pwm_apply_state_debug()
534 trace_pwm_get(pwm, last, err); in pwm_apply_state_debug()
556 int pwm_apply_state(struct pwm_device *pwm, const struct pwm_state *state) in pwm_apply_state() argument
570 if (!pwm || !state || !state->period || in pwm_apply_state()
574 chip = pwm->chip; in pwm_apply_state()
576 if (state->period == pwm->state.period && in pwm_apply_state()
577 state->duty_cycle == pwm->state.duty_cycle && in pwm_apply_state()
578 state->polarity == pwm->state.polarity && in pwm_apply_state()
579 state->enabled == pwm->state.enabled && in pwm_apply_state()
580 state->usage_power == pwm->state.usage_power) in pwm_apply_state()
583 err = chip->ops->apply(chip, pwm, state); in pwm_apply_state()
584 trace_pwm_apply(pwm, state, err); in pwm_apply_state()
588 pwm->state = *state; in pwm_apply_state()
594 pwm_apply_state_debug(pwm, state); in pwm_apply_state()
608 int pwm_capture(struct pwm_device *pwm, struct pwm_capture *result, in pwm_capture() argument
613 if (!pwm || !pwm->chip->ops) in pwm_capture()
616 if (!pwm->chip->ops->capture) in pwm_capture()
620 err = pwm->chip->ops->capture(pwm->chip, pwm, result, timeout); in pwm_capture()
635 int pwm_adjust_config(struct pwm_device *pwm) in pwm_adjust_config() argument
640 pwm_get_args(pwm, &pargs); in pwm_adjust_config()
641 pwm_get_state(pwm, &state); in pwm_adjust_config()
656 return pwm_apply_state(pwm, &state); in pwm_adjust_config()
679 return pwm_apply_state(pwm, &state); in pwm_adjust_config()
701 struct pwm_device *pwm) in pwm_device_link_add() argument
711 dev_warn(pwm->chip->dev, in pwm_device_link_add()
716 dl = device_link_add(dev, pwm->chip->dev, DL_FLAG_AUTOREMOVE_CONSUMER); in pwm_device_link_add()
719 dev_name(pwm->chip->dev)); in pwm_device_link_add()
749 struct pwm_device *pwm = NULL; in of_pwm_get() local
774 pwm = ERR_CAST(pc); in of_pwm_get()
778 pwm = pc->of_xlate(pc, &args); in of_pwm_get()
779 if (IS_ERR(pwm)) in of_pwm_get()
782 dl = pwm_device_link_add(dev, pwm); in of_pwm_get()
785 pwm_free(pwm); in of_pwm_get()
786 pwm = ERR_CAST(dl); in of_pwm_get()
802 pwm->label = con_id; in of_pwm_get()
807 return pwm; in of_pwm_get()
829 struct pwm_device *pwm; in acpi_pwm_get() local
847 pwm = pwm_request_from_chip(chip, args.args[0], NULL); in acpi_pwm_get()
848 if (IS_ERR(pwm)) in acpi_pwm_get()
849 return pwm; in acpi_pwm_get()
851 pwm->args.period = args.args[1]; in acpi_pwm_get()
852 pwm->args.polarity = PWM_POLARITY_NORMAL; in acpi_pwm_get()
855 pwm->args.polarity = PWM_POLARITY_INVERSED; in acpi_pwm_get()
857 return pwm; in acpi_pwm_get()
913 struct pwm_device *pwm; in pwm_get() local
927 pwm = acpi_pwm_get(fwnode); in pwm_get()
928 if (!IS_ERR(pwm) || PTR_ERR(pwm) != -ENOENT) in pwm_get()
929 return pwm; in pwm_get()
1003 pwm = pwm_request_from_chip(chip, chosen->index, con_id ?: dev_id); in pwm_get()
1004 if (IS_ERR(pwm)) in pwm_get()
1005 return pwm; in pwm_get()
1007 dl = pwm_device_link_add(dev, pwm); in pwm_get()
1009 pwm_free(pwm); in pwm_get()
1013 pwm->args.period = chosen->period; in pwm_get()
1014 pwm->args.polarity = chosen->polarity; in pwm_get()
1016 return pwm; in pwm_get()
1024 void pwm_put(struct pwm_device *pwm) in pwm_put() argument
1026 if (!pwm) in pwm_put()
1031 if (!test_and_clear_bit(PWMF_REQUESTED, &pwm->flags)) { in pwm_put()
1036 if (pwm->chip->ops->free) in pwm_put()
1037 pwm->chip->ops->free(pwm->chip, pwm); in pwm_put()
1039 pwm_set_chip_data(pwm, NULL); in pwm_put()
1040 pwm->label = NULL; in pwm_put()
1042 module_put(pwm->chip->ops->owner); in pwm_put()
1048 static void devm_pwm_release(void *pwm) in devm_pwm_release() argument
1050 pwm_put(pwm); in devm_pwm_release()
1066 struct pwm_device *pwm; in devm_pwm_get() local
1069 pwm = pwm_get(dev, con_id); in devm_pwm_get()
1070 if (IS_ERR(pwm)) in devm_pwm_get()
1071 return pwm; in devm_pwm_get()
1073 ret = devm_add_action_or_reset(dev, devm_pwm_release, pwm); in devm_pwm_get()
1077 return pwm; in devm_pwm_get()
1097 struct pwm_device *pwm = ERR_PTR(-ENODEV); in devm_fwnode_pwm_get() local
1101 pwm = of_pwm_get(dev, to_of_node(fwnode), con_id); in devm_fwnode_pwm_get()
1103 pwm = acpi_pwm_get(fwnode); in devm_fwnode_pwm_get()
1104 if (IS_ERR(pwm)) in devm_fwnode_pwm_get()
1105 return pwm; in devm_fwnode_pwm_get()
1107 ret = devm_add_action_or_reset(dev, devm_pwm_release, pwm); in devm_fwnode_pwm_get()
1111 return pwm; in devm_fwnode_pwm_get()
1121 struct pwm_device *pwm = &chip->pwms[i]; in pwm_dbg_show() local
1124 pwm_get_state(pwm, &state); in pwm_dbg_show()
1126 seq_printf(s, " pwm-%-3d (%-20.20s):", i, pwm->label); in pwm_dbg_show()
1128 if (test_bit(PWMF_REQUESTED, &pwm->flags)) in pwm_dbg_show()