7  * Since the EC will never change the backlight level of its own accord,
14 #include <linux/platform_data/wilco-ec.h>
22 	struct wilco_ec_device *ec;  member
33  * struct wilco_keyboard_leds_msg - Message to/from EC for keyboard LED control.
35  * @status: Set by EC to 0 on success, 0xFF on failure.
55 static int send_kbbl_msg(struct wilco_ec_device *ec,  in send_kbbl_msg()  argument
69 	ret = wilco_ec_mailbox(ec, &msg);  in send_kbbl_msg()
71 		dev_err(ec->dev,  in send_kbbl_msg()
79 static int set_kbbl(struct wilco_ec_device *ec, enum led_brightness brightness)  in set_kbbl()  argument
91 	ret = send_kbbl_msg(ec, &request, &response);  in set_kbbl()
96 		dev_err(ec->dev,  in set_kbbl()
97 			"EC reported failure sending keyboard LEDs command: %d\n",  in set_kbbl()
105 static int kbbl_exist(struct wilco_ec_device *ec, bool *exists)  in kbbl_exist()  argument
115 	ret = send_kbbl_msg(ec, &request, &response);  in kbbl_exist()
126  * @ec: EC device to talk to.
134 static int kbbl_init(struct wilco_ec_device *ec)  in kbbl_init()  argument
144 	ret = send_kbbl_msg(ec, &request, &response);  in kbbl_init()
149 		dev_err(ec->dev,  in kbbl_init()
150 			"EC reported failure sending keyboard LEDs command: %d\n",  in kbbl_init()
158 	ret = set_kbbl(ec, WILCO_KBBL_DEFAULT_BRIGHTNESS);  in kbbl_init()
170 	return set_kbbl(wkl->ec, brightness);  in wilco_keyboard_leds_set()
173 int wilco_keyboard_leds_init(struct wilco_ec_device *ec)  in wilco_keyboard_leds_init()  argument
179 	ret = kbbl_exist(ec, &leds_exist);  in wilco_keyboard_leds_init()
181 		dev_err(ec->dev,  in wilco_keyboard_leds_init()
188 	wkl = devm_kzalloc(ec->dev, sizeof(*wkl), GFP_KERNEL);  in wilco_keyboard_leds_init()
192 	wkl->ec = ec;  in wilco_keyboard_leds_init()
197 	ret = kbbl_init(ec);  in wilco_keyboard_leds_init()
202 	return devm_led_classdev_register(ec->dev, &wkl->keyboard);  in wilco_keyboard_leds_init()