platform/chrome: cros_kbd_led_backlight: Remove OF match

After applying 4c03a44 ("arm64: dts: mediatek: mt8195-cherry: Remove
keyboard-backlight node"), there are no users for using the OF match.
Instead, the device is added via drivers/mfd/cros_ec_dev.c by
970c3a6 ("mfd: cros_ec: Register keyboard backlight subdevice").

Remove the OF match.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Tzung-Bi Shih <[email protected]>

Author: Tzung-Bi Shih

drivers/platform/chrome/cros_kbd_led_backlight.c

@@ -121,7 +121,17 @@ static const struct keyboard_led_drvdata keyboard_led_drvdata_acpi = {
 
 #endif /* CONFIG_ACPI */
 
-#if IS_ENABLED(CONFIG_CROS_EC)
+#if IS_ENABLED(CONFIG_MFD_CROS_EC_DEV)
+static int keyboard_led_init_ec_pwm_mfd(struct platform_device *pdev)
+{
+	struct cros_ec_dev *ec_dev = dev_get_drvdata(pdev->dev.parent);
+	struct cros_ec_device *cros_ec = ec_dev->ec_dev;
+	struct keyboard_led *keyboard_led = platform_get_drvdata(pdev);
+
+	keyboard_led->ec = cros_ec;
+
+	return 0;
+}
 
 static int
 keyboard_led_set_brightness_ec_pwm(struct led_classdev *cdev,
@@ -169,44 +179,6 @@ keyboard_led_get_brightness_ec_pwm(struct led_classdev *cdev)
 	return resp->percent;
 }
 
-static int keyboard_led_init_ec_pwm(struct platform_device *pdev)
-{
-	struct keyboard_led *keyboard_led = platform_get_drvdata(pdev);
-
-	keyboard_led->ec = dev_get_drvdata(pdev->dev.parent);
-	if (!keyboard_led->ec) {
-		dev_err(&pdev->dev, "no parent EC device\n");
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static const __maybe_unused struct keyboard_led_drvdata keyboard_led_drvdata_ec_pwm = {
-	.init = keyboard_led_init_ec_pwm,
-	.brightness_set_blocking = keyboard_led_set_brightness_ec_pwm,
-	.brightness_get = keyboard_led_get_brightness_ec_pwm,
-	.max_brightness = KEYBOARD_BACKLIGHT_MAX,
-};
-
-#else /* IS_ENABLED(CONFIG_CROS_EC) */
-
-static const __maybe_unused struct keyboard_led_drvdata keyboard_led_drvdata_ec_pwm = {};
-
-#endif /* IS_ENABLED(CONFIG_CROS_EC) */
-
-#if IS_ENABLED(CONFIG_MFD_CROS_EC_DEV)
-static int keyboard_led_init_ec_pwm_mfd(struct platform_device *pdev)
-{
-	struct cros_ec_dev *ec_dev = dev_get_drvdata(pdev->dev.parent);
-	struct cros_ec_device *cros_ec = ec_dev->ec_dev;
-	struct keyboard_led *keyboard_led = platform_get_drvdata(pdev);
-
-	keyboard_led->ec = cros_ec;
-
-	return 0;
-}
-
 static const struct keyboard_led_drvdata keyboard_led_drvdata_ec_pwm_mfd = {
 	.init = keyboard_led_init_ec_pwm_mfd,
 	.brightness_set_blocking = keyboard_led_set_brightness_ec_pwm,
@@ -270,17 +242,6 @@ static const struct acpi_device_id keyboard_led_acpi_match[] = {
 MODULE_DEVICE_TABLE(acpi, keyboard_led_acpi_match);
 #endif
 
-#ifdef CONFIG_OF
-static const struct of_device_id keyboard_led_of_match[] = {
-	{
-		.compatible = "google,cros-kbd-led-backlight",
-		.data = &keyboard_led_drvdata_ec_pwm,
-	},
-	{}
-};
-MODULE_DEVICE_TABLE(of, keyboard_led_of_match);
-#endif
-
 static const struct platform_device_id keyboard_led_id[] = {
 	{ "cros-keyboard-leds", 0 },
 	{}
@@ -291,7 +252,6 @@ static struct platform_driver keyboard_led_driver = {
 	.driver		= {
 		.name	= "cros-keyboard-leds",
 		.acpi_match_table = ACPI_PTR(keyboard_led_acpi_match),
-		.of_match_table = of_match_ptr(keyboard_led_of_match),
 	},
 	.probe		= keyboard_led_probe,
 	.id_table	= keyboard_led_id,