58 static u64 pwm_gpio_toggle(struct pwm_gpio *gpwm, bool level)  in pwm_gpio_toggle()  argument
60 	const struct pwm_state *state = &gpwm->state;  in pwm_gpio_toggle()
63 	gpwm->level = level;  in pwm_gpio_toggle()
64 	gpiod_set_value(gpwm->gpio, gpwm->level ^ invert);  in pwm_gpio_toggle()
67 		gpwm->running = false;  in pwm_gpio_toggle()
71 	gpwm->running = true;  in pwm_gpio_toggle()
77 	struct pwm_gpio *gpwm = container_of(gpio_timer, struct pwm_gpio,  in pwm_gpio_timer()  local
82 	guard(spinlock_irqsave)(&gpwm->lock);  in pwm_gpio_timer()
85 	if (!gpwm->level && gpwm->changing) {  in pwm_gpio_timer()
86 		gpwm->changing = false;  in pwm_gpio_timer()
87 		gpwm->state = gpwm->next_state;  in pwm_gpio_timer()
88 		new_level = !!gpwm->state.duty_cycle;  in pwm_gpio_timer()
90 		new_level = !gpwm->level;  in pwm_gpio_timer()
93 	next_toggle = pwm_gpio_toggle(gpwm, new_level);  in pwm_gpio_timer()
104 	struct pwm_gpio *gpwm = pwmchip_get_drvdata(chip);  in pwm_gpio_apply()  local
115 		hrtimer_cancel(&gpwm->gpio_timer);  in pwm_gpio_apply()
116 	} else if (!gpwm->running) {  in pwm_gpio_apply()
123 		ret = gpiod_direction_output(gpwm->gpio, invert);  in pwm_gpio_apply()
128 	guard(spinlock_irqsave)(&gpwm->lock);  in pwm_gpio_apply()
131 		pwm_gpio_round(&gpwm->state, state);  in pwm_gpio_apply()
132 		gpwm->running = false;  in pwm_gpio_apply()
133 		gpwm->changing = false;  in pwm_gpio_apply()
135 		gpiod_set_value(gpwm->gpio, invert);  in pwm_gpio_apply()
136 	} else if (gpwm->running) {  in pwm_gpio_apply()
137 		pwm_gpio_round(&gpwm->next_state, state);  in pwm_gpio_apply()
138 		gpwm->changing = true;  in pwm_gpio_apply()
142 		pwm_gpio_round(&gpwm->state, state);  in pwm_gpio_apply()
143 		gpwm->changing = false;  in pwm_gpio_apply()
145 		next_toggle = pwm_gpio_toggle(gpwm, !!state->duty_cycle);  in pwm_gpio_apply()
147 			hrtimer_start(&gpwm->gpio_timer, next_toggle,  in pwm_gpio_apply()
157 	struct pwm_gpio *gpwm = pwmchip_get_drvdata(chip);  in pwm_gpio_get_state()  local
159 	guard(spinlock_irqsave)(&gpwm->lock);  in pwm_gpio_get_state()
161 	if (gpwm->changing)  in pwm_gpio_get_state()
162 		*state = gpwm->next_state;  in pwm_gpio_get_state()
164 		*state = gpwm->state;  in pwm_gpio_get_state()
176 	struct pwm_gpio *gpwm = data;  in pwm_gpio_disable_hrtimer()  local
178 	hrtimer_cancel(&gpwm->gpio_timer);  in pwm_gpio_disable_hrtimer()
185 	struct pwm_gpio *gpwm;  in pwm_gpio_probe()  local
188 	chip = devm_pwmchip_alloc(dev, 1, sizeof(*gpwm));  in pwm_gpio_probe()
192 	gpwm = pwmchip_get_drvdata(chip);  in pwm_gpio_probe()
194 	spin_lock_init(&gpwm->lock);  in pwm_gpio_probe()
196 	gpwm->gpio = devm_gpiod_get(dev, NULL, GPIOD_ASIS);  in pwm_gpio_probe()
197 	if (IS_ERR(gpwm->gpio))  in pwm_gpio_probe()
198 		return dev_err_probe(dev, PTR_ERR(gpwm->gpio),  in pwm_gpio_probe()
202 	if (gpiod_cansleep(gpwm->gpio))  in pwm_gpio_probe()
210 	hrtimer_init(&gpwm->gpio_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);  in pwm_gpio_probe()
211 	ret = devm_add_action_or_reset(dev, pwm_gpio_disable_hrtimer, gpwm);  in pwm_gpio_probe()
215 	gpwm->gpio_timer.function = pwm_gpio_timer;  in pwm_gpio_probe()