chrome/wilco_ec/keyboard_leds.c

1 // SPDX-License-Identifier: GPL-2.0
13 #include <linux/leds.h>
14 #include <linux/platform_data/wilco-ec.h>
33  * struct wilco_keyboard_leds_msg - Message to/from EC for keyboard LED control.
40  * @percent: Brightness in 0-100. Only meaningful in PWM mode.
71 		dev_err(ec->dev,  in send_kbbl_msg()
72 			"Failed sending keyboard LEDs command: %d\n", ret);  in send_kbbl_msg()
96 		dev_err(ec->dev,  in set_kbbl()
97 			"EC reported failure sending keyboard LEDs command: %d\n",  in set_kbbl()
99 		return -EIO;  in set_kbbl()
125  * kbbl_init() - Initialize the state of the keyboard backlight.
129  * backlight to PWM mode. If not in PWM mode, then the current brightness is
149 		dev_err(ec->dev,  in kbbl_init()
150 			"EC reported failure sending keyboard LEDs command: %d\n",  in kbbl_init()
152 		return -EIO;  in kbbl_init()
170 	return set_kbbl(wkl->ec, brightness);  in wilco_keyboard_leds_set()
181 		dev_err(ec->dev,  in wilco_keyboard_leds_init()
182 			"Failed checking keyboard LEDs support: %d\n", ret);  in wilco_keyboard_leds_init()
188 	wkl = devm_kzalloc(ec->dev, sizeof(*wkl), GFP_KERNEL);  in wilco_keyboard_leds_init()
190 		return -ENOMEM;  in wilco_keyboard_leds_init()
192 	wkl->ec = ec;  in wilco_keyboard_leds_init()
193 	wkl->keyboard.name = "platform::kbd_backlight";  in wilco_keyboard_leds_init()
194 	wkl->keyboard.max_brightness = 100;  in wilco_keyboard_leds_init()
195 	wkl->keyboard.flags = LED_CORE_SUSPENDRESUME;  in wilco_keyboard_leds_init()
196 	wkl->keyboard.brightness_set_blocking = wilco_keyboard_leds_set;  in wilco_keyboard_leds_init()
200 	wkl->keyboard.brightness = ret;  in wilco_keyboard_leds_init()
202 	return devm_led_classdev_register(ec->dev, &wkl->keyboard);  in wilco_keyboard_leds_init()