1 // SPDX-License-Identifier: GPL-2.0+
28  * struct keyboard_led_drvdata - keyboard LED driver data.
30  * @brightness_get:		Get LED brightness level.
31  * @brightness_set:		Set LED brightness level.  Must not sleep.
32  * @brightness_set_blocking:	Set LED brightness level.  It can block the
35  * @max_brightness:		Maximum brightness.
45 			       enum led_brightness brightness);
47 				       enum led_brightness brightness);
62 					     enum led_brightness brightness)  in keyboard_led_set_brightness_acpi()  argument
69 	param.integer.value = brightness;  in keyboard_led_set_brightness_acpi()
76 		dev_err(cdev->dev, "Error setting keyboard LED value: %d\n",  in keyboard_led_set_brightness_acpi()
83 	unsigned long long brightness;  in keyboard_led_get_brightness_acpi()  local
87 				       NULL, &brightness);  in keyboard_led_get_brightness_acpi()
89 		dev_err(cdev->dev, "Error getting keyboard LED value: %d\n",  in keyboard_led_get_brightness_acpi()
91 		return -EIO;  in keyboard_led_get_brightness_acpi()
94 	return brightness;  in keyboard_led_get_brightness_acpi()
107 		dev_err(&pdev->dev, "Unable to find ACPI device %s: %d\n",  in keyboard_led_init_acpi()
109 		return -ENXIO;  in keyboard_led_init_acpi()
127 	struct cros_ec_dev *ec_dev = dev_get_drvdata(pdev->dev.parent);  in keyboard_led_init_ec_pwm_mfd()
128 	struct cros_ec_device *cros_ec = ec_dev->ec_dev;  in keyboard_led_init_ec_pwm_mfd()
131 	keyboard_led->ec = cros_ec;  in keyboard_led_init_ec_pwm_mfd()
138 				   enum led_brightness brightness)  in keyboard_led_set_brightness_ec_pwm()  argument
150 	msg->command = EC_CMD_PWM_SET_KEYBOARD_BACKLIGHT;  in keyboard_led_set_brightness_ec_pwm()
151 	msg->outsize = sizeof(*params);  in keyboard_led_set_brightness_ec_pwm()
153 	params->percent = brightness;  in keyboard_led_set_brightness_ec_pwm()
155 	return cros_ec_cmd_xfer_status(keyboard_led->ec, msg);  in keyboard_led_set_brightness_ec_pwm()
172 	msg->command = EC_CMD_PWM_GET_KEYBOARD_BACKLIGHT;  in keyboard_led_get_brightness_ec_pwm()
173 	msg->insize = sizeof(*resp);  in keyboard_led_get_brightness_ec_pwm()
175 	ret = cros_ec_cmd_xfer_status(keyboard_led->ec, msg);  in keyboard_led_get_brightness_ec_pwm()
179 	return resp->percent;  in keyboard_led_get_brightness_ec_pwm()
209 		drvdata = device_get_match_data(&pdev->dev);  in keyboard_led_probe()
211 		return -EINVAL;  in keyboard_led_probe()
213 	keyboard_led = devm_kzalloc(&pdev->dev, sizeof(*keyboard_led), GFP_KERNEL);  in keyboard_led_probe()
215 		return -ENOMEM;  in keyboard_led_probe()
218 	if (drvdata->init) {  in keyboard_led_probe()
219 		err = drvdata->init(pdev);  in keyboard_led_probe()
224 	keyboard_led->cdev.name = "chromeos::kbd_backlight";  in keyboard_led_probe()
225 	keyboard_led->cdev.flags |= LED_CORE_SUSPENDRESUME | LED_REJECT_NAME_CONFLICT;  in keyboard_led_probe()
226 	keyboard_led->cdev.max_brightness = drvdata->max_brightness;  in keyboard_led_probe()
227 	keyboard_led->cdev.brightness_set = drvdata->brightness_set;  in keyboard_led_probe()
228 	keyboard_led->cdev.brightness_set_blocking = drvdata->brightness_set_blocking;  in keyboard_led_probe()
229 	keyboard_led->cdev.brightness_get = drvdata->brightness_get;  in keyboard_led_probe()
231 	err = devm_led_classdev_register(&pdev->dev, &keyboard_led->cdev);  in keyboard_led_probe()
232 	if (err == -EEXIST) /* Already bound via other mechanism */  in keyboard_led_probe()
233 		return -ENODEV;  in keyboard_led_probe()
246 	{ "cros-keyboard-leds", 0 },
253 		.name	= "cros-keyboard-leds",