28 static int __led_set_brightness(struct led_classdev *led_cdev,  in __led_set_brightness()  argument
31 	if (!led_cdev->brightness_set)  in __led_set_brightness()
34 	led_cdev->brightness_set(led_cdev, value);  in __led_set_brightness()
39 static int __led_set_brightness_blocking(struct led_classdev *led_cdev,  in __led_set_brightness_blocking()  argument
42 	if (!led_cdev->brightness_set_blocking)  in __led_set_brightness_blocking()
45 	return led_cdev->brightness_set_blocking(led_cdev, value);  in __led_set_brightness_blocking()
50 	struct led_classdev *led_cdev = from_timer(led_cdev, t, blink_timer);  in led_timer_function()  local
54 	if (!led_cdev->blink_delay_on || !led_cdev->blink_delay_off) {  in led_timer_function()
55 		led_set_brightness_nosleep(led_cdev, LED_OFF);  in led_timer_function()
56 		clear_bit(LED_BLINK_SW, &led_cdev->work_flags);  in led_timer_function()
61 			       &led_cdev->work_flags)) {  in led_timer_function()
62 		clear_bit(LED_BLINK_SW, &led_cdev->work_flags);  in led_timer_function()
66 	brightness = led_get_brightness(led_cdev);  in led_timer_function()
70 					&led_cdev->work_flags))  in led_timer_function()
71 			brightness = led_cdev->new_blink_brightness;  in led_timer_function()
73 			brightness = led_cdev->blink_brightness;  in led_timer_function()
74 		delay = led_cdev->blink_delay_on;  in led_timer_function()
79 		led_cdev->blink_brightness = brightness;  in led_timer_function()
81 		delay = led_cdev->blink_delay_off;  in led_timer_function()
84 	led_set_brightness_nosleep(led_cdev, brightness);  in led_timer_function()
90 	if (test_bit(LED_BLINK_ONESHOT, &led_cdev->work_flags)) {  in led_timer_function()
91 		if (test_bit(LED_BLINK_INVERT, &led_cdev->work_flags)) {  in led_timer_function()
94 					&led_cdev->work_flags);  in led_timer_function()
98 					&led_cdev->work_flags);  in led_timer_function()
102 	mod_timer(&led_cdev->blink_timer, jiffies + msecs_to_jiffies(delay));  in led_timer_function()
107 	struct led_classdev *led_cdev =  in set_brightness_delayed()  local
111 	if (test_and_clear_bit(LED_BLINK_DISABLE, &led_cdev->work_flags)) {  in set_brightness_delayed()
112 		led_cdev->delayed_set_value = LED_OFF;  in set_brightness_delayed()
113 		led_stop_software_blink(led_cdev);  in set_brightness_delayed()
116 	ret = __led_set_brightness(led_cdev, led_cdev->delayed_set_value);  in set_brightness_delayed()
118 		ret = __led_set_brightness_blocking(led_cdev,  in set_brightness_delayed()
119 					led_cdev->delayed_set_value);  in set_brightness_delayed()
122 	    !(ret == -ENODEV && (led_cdev->flags & LED_UNREGISTERING) &&  in set_brightness_delayed()
123 	    (led_cdev->flags & LED_HW_PLUGGABLE)))  in set_brightness_delayed()
124 		dev_err(led_cdev->dev,  in set_brightness_delayed()
128 static void led_set_software_blink(struct led_classdev *led_cdev,  in led_set_software_blink()  argument
134 	current_brightness = led_get_brightness(led_cdev);  in led_set_software_blink()
136 		led_cdev->blink_brightness = current_brightness;  in led_set_software_blink()
137 	if (!led_cdev->blink_brightness)  in led_set_software_blink()
138 		led_cdev->blink_brightness = led_cdev->max_brightness;  in led_set_software_blink()
140 	led_cdev->blink_delay_on = delay_on;  in led_set_software_blink()
141 	led_cdev->blink_delay_off = delay_off;  in led_set_software_blink()
145 		led_set_brightness_nosleep(led_cdev, LED_OFF);  in led_set_software_blink()
151 		led_set_brightness_nosleep(led_cdev,  in led_set_software_blink()
152 					   led_cdev->blink_brightness);  in led_set_software_blink()
156 	set_bit(LED_BLINK_SW, &led_cdev->work_flags);  in led_set_software_blink()
157 	mod_timer(&led_cdev->blink_timer, jiffies + 1);  in led_set_software_blink()
161 static void led_blink_setup(struct led_classdev *led_cdev,  in led_blink_setup()  argument
165 	if (!test_bit(LED_BLINK_ONESHOT, &led_cdev->work_flags) &&  in led_blink_setup()
166 	    led_cdev->blink_set &&  in led_blink_setup()
167 	    !led_cdev->blink_set(led_cdev, delay_on, delay_off))  in led_blink_setup()
174 	led_set_software_blink(led_cdev, *delay_on, *delay_off);  in led_blink_setup()
177 void led_init_core(struct led_classdev *led_cdev)  in led_init_core()  argument
179 	INIT_WORK(&led_cdev->set_brightness_work, set_brightness_delayed);  in led_init_core()
181 	timer_setup(&led_cdev->blink_timer, led_timer_function, 0);  in led_init_core()
185 void led_blink_set(struct led_classdev *led_cdev,  in led_blink_set()  argument
189 	del_timer_sync(&led_cdev->blink_timer);  in led_blink_set()
191 	clear_bit(LED_BLINK_SW, &led_cdev->work_flags);  in led_blink_set()
192 	clear_bit(LED_BLINK_ONESHOT, &led_cdev->work_flags);  in led_blink_set()
193 	clear_bit(LED_BLINK_ONESHOT_STOP, &led_cdev->work_flags);  in led_blink_set()
195 	led_blink_setup(led_cdev, delay_on, delay_off);  in led_blink_set()
199 void led_blink_set_oneshot(struct led_classdev *led_cdev,  in led_blink_set_oneshot()  argument
204 	if (test_bit(LED_BLINK_ONESHOT, &led_cdev->work_flags) &&  in led_blink_set_oneshot()
205 	     timer_pending(&led_cdev->blink_timer))  in led_blink_set_oneshot()
208 	set_bit(LED_BLINK_ONESHOT, &led_cdev->work_flags);  in led_blink_set_oneshot()
209 	clear_bit(LED_BLINK_ONESHOT_STOP, &led_cdev->work_flags);  in led_blink_set_oneshot()
212 		set_bit(LED_BLINK_INVERT, &led_cdev->work_flags);  in led_blink_set_oneshot()
214 		clear_bit(LED_BLINK_INVERT, &led_cdev->work_flags);  in led_blink_set_oneshot()
216 	led_blink_setup(led_cdev, delay_on, delay_off);  in led_blink_set_oneshot()
220 void led_stop_software_blink(struct led_classdev *led_cdev)  in led_stop_software_blink()  argument
222 	del_timer_sync(&led_cdev->blink_timer);  in led_stop_software_blink()
223 	led_cdev->blink_delay_on = 0;  in led_stop_software_blink()
224 	led_cdev->blink_delay_off = 0;  in led_stop_software_blink()
225 	clear_bit(LED_BLINK_SW, &led_cdev->work_flags);  in led_stop_software_blink()
229 void led_set_brightness(struct led_classdev *led_cdev,  in led_set_brightness()  argument
236 	if (test_bit(LED_BLINK_SW, &led_cdev->work_flags)) {  in led_set_brightness()
243 			set_bit(LED_BLINK_DISABLE, &led_cdev->work_flags);  in led_set_brightness()
244 			schedule_work(&led_cdev->set_brightness_work);  in led_set_brightness()
247 				&led_cdev->work_flags);  in led_set_brightness()
248 			led_cdev->new_blink_brightness = brightness;  in led_set_brightness()
253 	led_set_brightness_nosleep(led_cdev, brightness);  in led_set_brightness()
257 void led_set_brightness_nopm(struct led_classdev *led_cdev,  in led_set_brightness_nopm()  argument
261 	if (!__led_set_brightness(led_cdev, value))  in led_set_brightness_nopm()
265 	led_cdev->delayed_set_value = value;  in led_set_brightness_nopm()
266 	schedule_work(&led_cdev->set_brightness_work);  in led_set_brightness_nopm()
270 void led_set_brightness_nosleep(struct led_classdev *led_cdev,  in led_set_brightness_nosleep()  argument
273 	led_cdev->brightness = min(value, led_cdev->max_brightness);  in led_set_brightness_nosleep()
275 	if (led_cdev->flags & LED_SUSPENDED)  in led_set_brightness_nosleep()
278 	led_set_brightness_nopm(led_cdev, led_cdev->brightness);  in led_set_brightness_nosleep()
282 int led_set_brightness_sync(struct led_classdev *led_cdev,  in led_set_brightness_sync()  argument
285 	if (led_cdev->blink_delay_on || led_cdev->blink_delay_off)  in led_set_brightness_sync()
288 	led_cdev->brightness = min(value, led_cdev->max_brightness);  in led_set_brightness_sync()
290 	if (led_cdev->flags & LED_SUSPENDED)  in led_set_brightness_sync()
293 	return __led_set_brightness_blocking(led_cdev, led_cdev->brightness);  in led_set_brightness_sync()
297 int led_update_brightness(struct led_classdev *led_cdev)  in led_update_brightness()  argument
301 	if (led_cdev->brightness_get) {  in led_update_brightness()
302 		ret = led_cdev->brightness_get(led_cdev);  in led_update_brightness()
304 			led_cdev->brightness = ret;  in led_update_brightness()
314 void led_sysfs_disable(struct led_classdev *led_cdev)  in led_sysfs_disable()  argument
316 	lockdep_assert_held(&led_cdev->led_access);  in led_sysfs_disable()
318 	led_cdev->flags |= LED_SYSFS_DISABLE;  in led_sysfs_disable()
323 void led_sysfs_enable(struct led_classdev *led_cdev)  in led_sysfs_enable()  argument
325 	lockdep_assert_held(&led_cdev->led_access);  in led_sysfs_enable()
327 	led_cdev->flags &= ~LED_SYSFS_DISABLE;  in led_sysfs_enable()