1 // SPDX-License-Identifier: GPL-2.0+
26  * struct keyboard_led_drvdata - keyboard LED driver data.
28  * @brightness_get:		Get LED brightness level.
29  * @brightness_set:		Set LED brightness level.  Must not sleep.
30  * @brightness_set_blocking:	Set LED brightness level.  It can block the
33  * @max_brightness:		Maximum brightness.
43 			       enum led_brightness brightness);
45 				       enum led_brightness brightness);
60 					     enum led_brightness brightness)  in keyboard_led_set_brightness_acpi()  argument
67 	param.integer.value = brightness;  in keyboard_led_set_brightness_acpi()
74 		dev_err(cdev->dev, "Error setting keyboard LED value: %d\n",  in keyboard_led_set_brightness_acpi()
81 	unsigned long long brightness;  in keyboard_led_get_brightness_acpi()  local
85 				       NULL, &brightness);  in keyboard_led_get_brightness_acpi()
87 		dev_err(cdev->dev, "Error getting keyboard LED value: %d\n",  in keyboard_led_get_brightness_acpi()
89 		return -EIO;  in keyboard_led_get_brightness_acpi()
92 	return brightness;  in keyboard_led_get_brightness_acpi()
105 		dev_err(&pdev->dev, "Unable to find ACPI device %s: %d\n",  in keyboard_led_init_acpi()
107 		return -ENXIO;  in keyboard_led_init_acpi()
126 				   enum led_brightness brightness)  in keyboard_led_set_brightness_ec_pwm()  argument
138 	msg->command = EC_CMD_PWM_SET_KEYBOARD_BACKLIGHT;  in keyboard_led_set_brightness_ec_pwm()
139 	msg->outsize = sizeof(*params);  in keyboard_led_set_brightness_ec_pwm()
141 	params->percent = brightness;  in keyboard_led_set_brightness_ec_pwm()
143 	return cros_ec_cmd_xfer_status(keyboard_led->ec, msg);  in keyboard_led_set_brightness_ec_pwm()
160 	msg->command = EC_CMD_PWM_GET_KEYBOARD_BACKLIGHT;  in keyboard_led_get_brightness_ec_pwm()
161 	msg->insize = sizeof(*resp);  in keyboard_led_get_brightness_ec_pwm()
163 	ret = cros_ec_cmd_xfer_status(keyboard_led->ec, msg);  in keyboard_led_get_brightness_ec_pwm()
167 	return resp->percent;  in keyboard_led_get_brightness_ec_pwm()
174 	keyboard_led->ec = dev_get_drvdata(pdev->dev.parent);  in keyboard_led_init_ec_pwm()
175 	if (!keyboard_led->ec) {  in keyboard_led_init_ec_pwm()
176 		dev_err(&pdev->dev, "no parent EC device\n");  in keyboard_led_init_ec_pwm()
177 		return -EINVAL;  in keyboard_led_init_ec_pwm()
202 	drvdata = device_get_match_data(&pdev->dev);  in keyboard_led_probe()
204 		return -EINVAL;  in keyboard_led_probe()
206 	keyboard_led = devm_kzalloc(&pdev->dev, sizeof(*keyboard_led), GFP_KERNEL);  in keyboard_led_probe()
208 		return -ENOMEM;  in keyboard_led_probe()
211 	if (drvdata->init) {  in keyboard_led_probe()
212 		error = drvdata->init(pdev);  in keyboard_led_probe()
217 	keyboard_led->cdev.name = "chromeos::kbd_backlight";  in keyboard_led_probe()
218 	keyboard_led->cdev.flags |= LED_CORE_SUSPENDRESUME;  in keyboard_led_probe()
219 	keyboard_led->cdev.max_brightness = drvdata->max_brightness;  in keyboard_led_probe()
220 	keyboard_led->cdev.brightness_set = drvdata->brightness_set;  in keyboard_led_probe()
221 	keyboard_led->cdev.brightness_set_blocking = drvdata->brightness_set_blocking;  in keyboard_led_probe()
222 	keyboard_led->cdev.brightness_get = drvdata->brightness_get;  in keyboard_led_probe()
224 	error = devm_led_classdev_register(&pdev->dev, &keyboard_led->cdev);  in keyboard_led_probe()
242 		.compatible = "google,cros-kbd-led-backlight",
252 		.name	= "chromeos-keyboard-leds",
263 MODULE_ALIAS("platform:chromeos-keyboard-leds");