1 // SPDX-License-Identifier: GPL-2.0-only
45 	if (led_dat->blinking) {  in gpio_led_set()
46 		led_dat->platform_gpio_blink_set(led_dat->gpiod, level,  in gpio_led_set()
48 		led_dat->blinking = 0;  in gpio_led_set()
50 		if (led_dat->can_sleep)  in gpio_led_set()
51 			gpiod_set_value_cansleep(led_dat->gpiod, level);  in gpio_led_set()
53 			gpiod_set_value(led_dat->gpiod, level);  in gpio_led_set()
69 	led_dat->blinking = 1;  in gpio_blink_set()
70 	return led_dat->platform_gpio_blink_set(led_dat->gpiod, GPIO_LED_BLINK,  in gpio_blink_set()
79 	int ret, state;  in create_gpio_led()  local
81 	led_dat->cdev.default_trigger = template->default_trigger;  in create_gpio_led()
82 	led_dat->can_sleep = gpiod_cansleep(led_dat->gpiod);  in create_gpio_led()
83 	if (!led_dat->can_sleep)  in create_gpio_led()
84 		led_dat->cdev.brightness_set = gpio_led_set;  in create_gpio_led()
86 		led_dat->cdev.brightness_set_blocking = gpio_led_set_blocking;  in create_gpio_led()
87 	led_dat->blinking = 0;  in create_gpio_led()
89 		led_dat->platform_gpio_blink_set = blink_set;  in create_gpio_led()
90 		led_dat->cdev.blink_set = gpio_blink_set;  in create_gpio_led()
92 	if (template->default_state == LEDS_GPIO_DEFSTATE_KEEP) {  in create_gpio_led()
93 		state = gpiod_get_value_cansleep(led_dat->gpiod);  in create_gpio_led()
94 		if (state < 0)  in create_gpio_led()
95 			return state;  in create_gpio_led()
97 		state = (template->default_state == LEDS_GPIO_DEFSTATE_ON);  in create_gpio_led()
99 	led_dat->cdev.brightness = state ? LED_FULL : LED_OFF;  in create_gpio_led()
100 	if (!template->retain_state_suspended)  in create_gpio_led()
101 		led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;  in create_gpio_led()
102 	if (template->panic_indicator)  in create_gpio_led()
103 		led_dat->cdev.flags |= LED_PANIC_INDICATOR;  in create_gpio_led()
104 	if (template->retain_state_shutdown)  in create_gpio_led()
105 		led_dat->cdev.flags |= LED_RETAIN_AT_SHUTDOWN;  in create_gpio_led()
107 	ret = gpiod_direction_output(led_dat->gpiod, state);  in create_gpio_led()
111 	if (template->name) {  in create_gpio_led()
112 		led_dat->cdev.name = template->name;  in create_gpio_led()
113 		ret = devm_led_classdev_register(parent, &led_dat->cdev);  in create_gpio_led()
116 		ret = devm_led_classdev_register_ext(parent, &led_dat->cdev,  in create_gpio_led()
130 	struct device *dev = &pdev->dev;  in gpio_leds_create()
137 		return ERR_PTR(-ENODEV);  in gpio_leds_create()
141 		return ERR_PTR(-ENOMEM);  in gpio_leds_create()
144 		struct gpio_led_data *led_dat = &priv->leds[priv->num_leds];  in gpio_leds_create()
146 		const char *state = NULL;  in gpio_leds_create()  local
161 		led_dat->gpiod = led.gpiod;  in gpio_leds_create()
163 		if (!fwnode_property_read_string(child, "default-state",  in gpio_leds_create()
164 						 &state)) {  in gpio_leds_create()
165 			if (!strcmp(state, "keep"))  in gpio_leds_create()
167 			else if (!strcmp(state, "on"))  in gpio_leds_create()
173 		if (fwnode_property_present(child, "retain-state-suspended"))  in gpio_leds_create()
175 		if (fwnode_property_present(child, "retain-state-shutdown"))  in gpio_leds_create()
177 		if (fwnode_property_present(child, "panic-indicator"))  in gpio_leds_create()
186 		gpiod_set_consumer_name(led_dat->gpiod,  in gpio_leds_create()
187 					led_dat->cdev.dev->kobj.name);  in gpio_leds_create()
188 		priv->num_leds++;  in gpio_leds_create()
195 	{ .compatible = "gpio-leds", },
216 		gpiod_set_consumer_name(gpiod, template->name);  in gpio_led_get_gpiod()
219 	if (PTR_ERR(gpiod) != -ENOENT)  in gpio_led_get_gpiod()
229 	if (!gpio_is_valid(template->gpio))  in gpio_led_get_gpiod()
230 		return ERR_PTR(-ENOENT);  in gpio_led_get_gpiod()
232 	if (template->active_low)  in gpio_led_get_gpiod()
235 	ret = devm_gpio_request_one(dev, template->gpio, flags,  in gpio_led_get_gpiod()
236 				    template->name);  in gpio_led_get_gpiod()
240 	gpiod = gpio_to_desc(template->gpio);  in gpio_led_get_gpiod()
242 		return ERR_PTR(-EINVAL);  in gpio_led_get_gpiod()
249 	struct gpio_led_platform_data *pdata = dev_get_platdata(&pdev->dev);  in gpio_led_probe()
253 	if (pdata && pdata->num_leds) {  in gpio_led_probe()
254 		priv = devm_kzalloc(&pdev->dev, struct_size(priv, leds, pdata->num_leds),  in gpio_led_probe()
257 			return -ENOMEM;  in gpio_led_probe()
259 		priv->num_leds = pdata->num_leds;  in gpio_led_probe()
260 		for (i = 0; i < priv->num_leds; i++) {  in gpio_led_probe()
261 			const struct gpio_led *template = &pdata->leds[i];  in gpio_led_probe()
262 			struct gpio_led_data *led_dat = &priv->leds[i];  in gpio_led_probe()
264 			if (template->gpiod)  in gpio_led_probe()
265 				led_dat->gpiod = template->gpiod;  in gpio_led_probe()
267 				led_dat->gpiod =  in gpio_led_probe()
268 					gpio_led_get_gpiod(&pdev->dev,  in gpio_led_probe()
270 			if (IS_ERR(led_dat->gpiod)) {  in gpio_led_probe()
271 				dev_info(&pdev->dev, "Skipping unavailable LED gpio %d (%s)\n",  in gpio_led_probe()
272 					 template->gpio, template->name);  in gpio_led_probe()
277 					      &pdev->dev, NULL,  in gpio_led_probe()
278 					      pdata->gpio_blink_set);  in gpio_led_probe()
298 	for (i = 0; i < priv->num_leds; i++) {  in gpio_led_shutdown()
299 		struct gpio_led_data *led = &priv->leds[i];  in gpio_led_shutdown()
301 		if (!(led->cdev.flags & LED_RETAIN_AT_SHUTDOWN))  in gpio_led_shutdown()
302 			gpio_led_set(&led->cdev, LED_OFF);  in gpio_led_shutdown()
310 		.name	= "leds-gpio",
320 MODULE_ALIAS("platform:leds-gpio");