Merge tag 'backlight-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

Pull backlight updates from Lee Jones:
 "Fix-ups:
   - Add / improve Device Tree bindings
   - Convert (int) .remove functions to (void) .remove_new
   - Rid 'defined but not used' warnings
   - Remove ineffective casts and pointer stubs
   - Use specifically crafted API for testing DT property presence"

* tag 'backlight-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
  backlight: as3711: Use of_property_read_bool() for boolean properties
  backlight: hx8357: Use of_property_present() for testing DT property presence
  backlight: arcxcnn_bl: Drop of_match_ptr for ID table
  backlight: lp855x: Mark OF related data as maybe unused
  backlight: sky81452-backlight: Convert to platform remove callback returning void
  backlight: rt4831-backlight: Convert to platform remove callback returning void
  backlight: qcom-wled: Convert to platform remove callback returning void
  backlight: pwm_bl: Convert to platform remove callback returning void
  backlight: mt6370-backlight: Convert to platform remove callback returning void
  backlight: lp8788_bl: Convert to platform remove callback returning void
  backlight: lm3533_bl: Convert to platform remove callback returning void
  backlight: led_bl: Convert to platform remove callback returning void
  backlight: hp680_bl: Convert to platform remove callback returning void
  backlight: da9052_bl: Convert to platform remove callback returning void
  backlight: cr_bllcd: Convert to platform remove callback returning void
  backlight: adp5520_bl: Convert to platform remove callback returning void
  backlight: aat2870_bl: Convert to platform remove callback returning void
  backlight: qcom-wled: Add PMI8950 compatible

drivers/video/backlight/aat2870_bl.c

@@ -178,7 +178,7 @@ static int aat2870_bl_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int aat2870_bl_remove(struct platform_device *pdev)
+static void aat2870_bl_remove(struct platform_device *pdev)
 {
 	struct aat2870_bl_driver_data *aat2870_bl = platform_get_drvdata(pdev);
 	struct backlight_device *bd = aat2870_bl->bd;
@@ -186,8 +186,6 @@ static int aat2870_bl_remove(struct platform_device *pdev)
 	bd->props.power = FB_BLANK_POWERDOWN;
 	bd->props.brightness = 0;
 	backlight_update_status(bd);
-
-	return 0;
 }
 
 static struct platform_driver aat2870_bl_driver = {
@@ -195,7 +193,7 @@ static struct platform_driver aat2870_bl_driver = {
 		.name	= "aat2870-backlight",
 	},
 	.probe		= aat2870_bl_probe,
-	.remove		= aat2870_bl_remove,
+	.remove_new	= aat2870_bl_remove,
 };
 
 static int __init aat2870_bl_init(void)

drivers/video/backlight/adp5520_bl.c

@@ -337,7 +337,7 @@ static int adp5520_bl_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int adp5520_bl_remove(struct platform_device *pdev)
+static void adp5520_bl_remove(struct platform_device *pdev)
 {
 	struct backlight_device *bl = platform_get_drvdata(pdev);
 	struct adp5520_bl *data = bl_get_data(bl);
@@ -347,8 +347,6 @@ static int adp5520_bl_remove(struct platform_device *pdev)
 	if (data->pdata->en_ambl_sens)
 		sysfs_remove_group(&bl->dev.kobj,
 				&adp5520_bl_attr_group);
-
-	return 0;
 }
 
 #ifdef CONFIG_PM_SLEEP
@@ -377,7 +375,7 @@ static struct platform_driver adp5520_bl_driver = {
 		.pm	= &adp5520_bl_pm_ops,
 	},
 	.probe		= adp5520_bl_probe,
-	.remove		= adp5520_bl_remove,
+	.remove_new	= adp5520_bl_remove,
 };
 
 module_platform_driver(adp5520_bl_driver);

drivers/video/backlight/arcxcnn_bl.c

@@ -390,7 +390,7 @@ MODULE_DEVICE_TABLE(i2c, arcxcnn_ids);
 static struct i2c_driver arcxcnn_driver = {
 	.driver = {
 		.name = "arcxcnn_bl",
-		.of_match_table = of_match_ptr(arcxcnn_dt_ids),
+		.of_match_table = arcxcnn_dt_ids,
 	},
 	.probe_new = arcxcnn_probe,
 	.remove = arcxcnn_remove,

drivers/video/backlight/as3711_bl.c

@@ -286,23 +286,23 @@ static int as3711_backlight_parse_dt(struct device *dev)
 		if (ret < 0)
 			goto err_put_bl;
 
-		if (of_find_property(bl, "su2-feedback-voltage", NULL)) {
+		if (of_property_read_bool(bl, "su2-feedback-voltage")) {
 			pdata->su2_feedback = AS3711_SU2_VOLTAGE;
 			count++;
 		}
-		if (of_find_property(bl, "su2-feedback-curr1", NULL)) {
+		if (of_property_read_bool(bl, "su2-feedback-curr1")) {
 			pdata->su2_feedback = AS3711_SU2_CURR1;
 			count++;
 		}
-		if (of_find_property(bl, "su2-feedback-curr2", NULL)) {
+		if (of_property_read_bool(bl, "su2-feedback-curr2")) {
 			pdata->su2_feedback = AS3711_SU2_CURR2;
 			count++;
 		}
-		if (of_find_property(bl, "su2-feedback-curr3", NULL)) {
+		if (of_property_read_bool(bl, "su2-feedback-curr3")) {
 			pdata->su2_feedback = AS3711_SU2_CURR3;
 			count++;
 		}
-		if (of_find_property(bl, "su2-feedback-curr-auto", NULL)) {
+		if (of_property_read_bool(bl, "su2-feedback-curr-auto")) {
 			pdata->su2_feedback = AS3711_SU2_CURR_AUTO;
 			count++;
 		}
@@ -312,19 +312,19 @@ static int as3711_backlight_parse_dt(struct device *dev)
 		}
 
 		count = 0;
-		if (of_find_property(bl, "su2-fbprot-lx-sd4", NULL)) {
+		if (of_property_read_bool(bl, "su2-fbprot-lx-sd4")) {
 			pdata->su2_fbprot = AS3711_SU2_LX_SD4;
 			count++;
 		}
-		if (of_find_property(bl, "su2-fbprot-gpio2", NULL)) {
+		if (of_property_read_bool(bl, "su2-fbprot-gpio2")) {
 			pdata->su2_fbprot = AS3711_SU2_GPIO2;
 			count++;
 		}
-		if (of_find_property(bl, "su2-fbprot-gpio3", NULL)) {
+		if (of_property_read_bool(bl, "su2-fbprot-gpio3")) {
 			pdata->su2_fbprot = AS3711_SU2_GPIO3;
 			count++;
 		}
-		if (of_find_property(bl, "su2-fbprot-gpio4", NULL)) {
+		if (of_property_read_bool(bl, "su2-fbprot-gpio4")) {
 			pdata->su2_fbprot = AS3711_SU2_GPIO4;
 			count++;
 		}
@@ -334,15 +334,15 @@ static int as3711_backlight_parse_dt(struct device *dev)
 		}
 
 		count = 0;
-		if (of_find_property(bl, "su2-auto-curr1", NULL)) {
+		if (of_property_read_bool(bl, "su2-auto-curr1")) {
 			pdata->su2_auto_curr1 = true;
 			count++;
 		}
-		if (of_find_property(bl, "su2-auto-curr2", NULL)) {
+		if (of_property_read_bool(bl, "su2-auto-curr2")) {
 			pdata->su2_auto_curr2 = true;
 			count++;
 		}
-		if (of_find_property(bl, "su2-auto-curr3", NULL)) {
+		if (of_property_read_bool(bl, "su2-auto-curr3")) {
 			pdata->su2_auto_curr3 = true;
 			count++;
 		}

drivers/video/backlight/cr_bllcd.c

@@ -210,7 +210,7 @@ static int cr_backlight_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int cr_backlight_remove(struct platform_device *pdev)
+static void cr_backlight_remove(struct platform_device *pdev)
 {
 	struct cr_panel *crp = platform_get_drvdata(pdev);
 
@@ -220,13 +220,11 @@ static int cr_backlight_remove(struct platform_device *pdev)
 	cr_backlight_set_intensity(crp->cr_backlight_device);
 	cr_lcd_set_power(crp->cr_lcd_device, FB_BLANK_POWERDOWN);
 	pci_dev_put(lpc_dev);
-
-	return 0;
 }
 
 static struct platform_driver cr_backlight_driver = {
 	.probe = cr_backlight_probe,
-	.remove = cr_backlight_remove,
+	.remove_new = cr_backlight_remove,
 	.driver = {
 		   .name = "cr_backlight",
 		   },

drivers/video/backlight/da9052_bl.c

@@ -135,7 +135,7 @@ static int da9052_backlight_probe(struct platform_device *pdev)
 	return da9052_adjust_wled_brightness(wleds);
 }
 
-static int da9052_backlight_remove(struct platform_device *pdev)
+static void da9052_backlight_remove(struct platform_device *pdev)
 {
 	struct backlight_device *bl = platform_get_drvdata(pdev);
 	struct da9052_bl *wleds = bl_get_data(bl);
@@ -143,8 +143,6 @@ static int da9052_backlight_remove(struct platform_device *pdev)
 	wleds->brightness = 0;
 	wleds->state = DA9052_WLEDS_OFF;
 	da9052_adjust_wled_brightness(wleds);
-
-	return 0;
 }
 
 static const struct platform_device_id da9052_wled_ids[] = {
@@ -166,7 +164,7 @@ MODULE_DEVICE_TABLE(platform, da9052_wled_ids);
 
 static struct platform_driver da9052_wled_driver = {
 	.probe		= da9052_backlight_probe,
-	.remove		= da9052_backlight_remove,
+	.remove_new	= da9052_backlight_remove,
 	.id_table	= da9052_wled_ids,
 	.driver	= {
 		.name	= "da9052-wled",

drivers/video/backlight/hp680_bl.c

@@ -119,20 +119,18 @@ static int hp680bl_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int hp680bl_remove(struct platform_device *pdev)
+static void hp680bl_remove(struct platform_device *pdev)
 {
 	struct backlight_device *bd = platform_get_drvdata(pdev);
 
 	bd->props.brightness = 0;
 	bd->props.power = 0;
 	hp680bl_send_intensity(bd);
-
-	return 0;
 }
 
 static struct platform_driver hp680bl_driver = {
 	.probe		= hp680bl_probe,
-	.remove		= hp680bl_remove,
+	.remove_new	= hp680bl_remove,
 	.driver		= {
 		.name	= "hp680-bl",
 		.pm	= &hp680bl_pm_ops,

drivers/video/backlight/hx8357.c

@@ -617,7 +617,7 @@ static int hx8357_probe(struct spi_device *spi)
 		return -EINVAL;
 	}
 
-	if (of_find_property(spi->dev.of_node, "im-gpios", NULL)) {
+	if (of_property_present(spi->dev.of_node, "im-gpios")) {
 		lcd->use_im_pins = 1;
 
 		for (i = 0; i < HX8357_NUM_IM_PINS; i++) {

drivers/video/backlight/led_bl.c

@@ -217,7 +217,7 @@ static int led_bl_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int led_bl_remove(struct platform_device *pdev)
+static void led_bl_remove(struct platform_device *pdev)
 {
 	struct led_bl_data *priv = platform_get_drvdata(pdev);
 	struct backlight_device *bl = priv->bl_dev;
@@ -228,8 +228,6 @@ static int led_bl_remove(struct platform_device *pdev)
 	led_bl_power_off(priv);
 	for (i = 0; i < priv->nb_leds; i++)
 		led_sysfs_enable(priv->leds[i]);
-
-	return 0;
 }
 
 static const struct of_device_id led_bl_of_match[] = {
@@ -245,7 +243,7 @@ static struct platform_driver led_bl_driver = {
 		.of_match_table	= of_match_ptr(led_bl_of_match),
 	},
 	.probe		= led_bl_probe,
-	.remove		= led_bl_remove,
+	.remove_new	= led_bl_remove,
 };
 
 module_platform_driver(led_bl_driver);

drivers/video/backlight/lm3533_bl.c

@@ -337,7 +337,7 @@ static int lm3533_bl_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int lm3533_bl_remove(struct platform_device *pdev)
+static void lm3533_bl_remove(struct platform_device *pdev)
 {
 	struct lm3533_bl *bl = platform_get_drvdata(pdev);
 	struct backlight_device *bd = bl->bd;
@@ -349,8 +349,6 @@ static int lm3533_bl_remove(struct platform_device *pdev)
 
 	lm3533_ctrlbank_disable(&bl->cb);
 	sysfs_remove_group(&bd->dev.kobj, &lm3533_bl_attribute_group);
-
-	return 0;
 }
 
 #ifdef CONFIG_PM_SLEEP
@@ -390,7 +388,7 @@ static struct platform_driver lm3533_bl_driver = {
 		.pm	= &lm3533_bl_pm_ops,
 	},
 	.probe		= lm3533_bl_probe,
-	.remove		= lm3533_bl_remove,
+	.remove_new	= lm3533_bl_remove,
 	.shutdown	= lm3533_bl_shutdown,
 };
 module_platform_driver(lm3533_bl_driver);

drivers/video/backlight/lp855x_bl.c

@@ -548,7 +548,7 @@ static void lp855x_remove(struct i2c_client *cl)
 	sysfs_remove_group(&lp->dev->kobj, &lp855x_attr_group);
 }
 
-static const struct of_device_id lp855x_dt_ids[] = {
+static const struct of_device_id lp855x_dt_ids[] __maybe_unused = {
 	{ .compatible = "ti,lp8550", },
 	{ .compatible = "ti,lp8551", },
 	{ .compatible = "ti,lp8552", },

drivers/video/backlight/lp8788_bl.c

@@ -298,7 +298,7 @@ static int lp8788_backlight_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int lp8788_backlight_remove(struct platform_device *pdev)
+static void lp8788_backlight_remove(struct platform_device *pdev)
 {
 	struct lp8788_bl *bl = platform_get_drvdata(pdev);
 	struct backlight_device *bl_dev = bl->bl_dev;
@@ -307,13 +307,11 @@ static int lp8788_backlight_remove(struct platform_device *pdev)
 	backlight_update_status(bl_dev);
 	sysfs_remove_group(&pdev->dev.kobj, &lp8788_attr_group);
 	lp8788_backlight_unregister(bl);
-
-	return 0;
 }
 
 static struct platform_driver lp8788_bl_driver = {
 	.probe = lp8788_backlight_probe,
-	.remove = lp8788_backlight_remove,
+	.remove_new = lp8788_backlight_remove,
 	.driver = {
 		.name = LP8788_DEV_BACKLIGHT,
 	},

drivers/video/backlight/mt6370-backlight.c

@@ -318,15 +318,13 @@ static int mt6370_bl_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int mt6370_bl_remove(struct platform_device *pdev)
+static void mt6370_bl_remove(struct platform_device *pdev)
 {
 	struct mt6370_priv *priv = platform_get_drvdata(pdev);
 	struct backlight_device *bl_dev = priv->bl;
 
 	bl_dev->props.brightness = 0;
 	backlight_update_status(priv->bl);
-
-	return 0;
 }
 
 static const struct of_device_id mt6370_bl_of_match[] = {
@@ -342,7 +340,7 @@ static struct platform_driver mt6370_bl_driver = {
 		.of_match_table = mt6370_bl_of_match,
 	},
 	.probe = mt6370_bl_probe,
-	.remove = mt6370_bl_remove,
+	.remove_new = mt6370_bl_remove,
 };
 module_platform_driver(mt6370_bl_driver);
 

drivers/video/backlight/pwm_bl.c

@@ -625,7 +625,7 @@ static int pwm_backlight_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int pwm_backlight_remove(struct platform_device *pdev)
+static void pwm_backlight_remove(struct platform_device *pdev)
 {
 	struct backlight_device *bl = platform_get_drvdata(pdev);
 	struct pwm_bl_data *pb = bl_get_data(bl);
@@ -635,8 +635,6 @@ static int pwm_backlight_remove(struct platform_device *pdev)
 
 	if (pb->exit)
 		pb->exit(&pdev->dev);
-
-	return 0;
 }
 
 static void pwm_backlight_shutdown(struct platform_device *pdev)
@@ -690,7 +688,7 @@ static struct platform_driver pwm_backlight_driver = {
 		.of_match_table	= of_match_ptr(pwm_backlight_of_match),
 	},
 	.probe		= pwm_backlight_probe,
-	.remove		= pwm_backlight_remove,
+	.remove_new	= pwm_backlight_remove,
 	.shutdown	= pwm_backlight_shutdown,
 };
 

drivers/video/backlight/qcom-wled.c

@@ -1717,7 +1717,7 @@ static int wled_probe(struct platform_device *pdev)
 	return PTR_ERR_OR_ZERO(bl);
 };
 
-static int wled_remove(struct platform_device *pdev)
+static void wled_remove(struct platform_device *pdev)
 {
 	struct wled *wled = platform_get_drvdata(pdev);
 
@@ -1725,12 +1725,11 @@ static int wled_remove(struct platform_device *pdev)
 	cancel_delayed_work_sync(&wled->ovp_work);
 	disable_irq(wled->short_irq);
 	disable_irq(wled->ovp_irq);
-
-	return 0;
 }
 
 static const struct of_device_id wled_match_table[] = {
 	{ .compatible = "qcom,pm8941-wled", .data = (void *)3 },
+	{ .compatible = "qcom,pmi8950-wled", .data = (void *)4 },
 	{ .compatible = "qcom,pmi8994-wled", .data = (void *)4 },
 	{ .compatible = "qcom,pmi8998-wled", .data = (void *)4 },
 	{ .compatible = "qcom,pm660l-wled", .data = (void *)4 },
@@ -1742,7 +1741,7 @@ MODULE_DEVICE_TABLE(of, wled_match_table);
 
 static struct platform_driver wled_driver = {
 	.probe = wled_probe,
-	.remove = wled_remove,
+	.remove_new = wled_remove,
 	.driver	= {
 		.name = "qcom,wled",
 		.of_match_table	= wled_match_table,

drivers/video/backlight/rt4831-backlight.c

@@ -203,15 +203,13 @@ static int rt4831_bl_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int rt4831_bl_remove(struct platform_device *pdev)
+static void rt4831_bl_remove(struct platform_device *pdev)
 {
 	struct rt4831_priv *priv = platform_get_drvdata(pdev);
 	struct backlight_device *bl_dev = priv->bl;
 
 	bl_dev->props.brightness = 0;
 	backlight_update_status(priv->bl);
-
-	return 0;
 }
 
 static const struct of_device_id __maybe_unused rt4831_bl_of_match[] = {
@@ -226,7 +224,7 @@ static struct platform_driver rt4831_bl_driver = {
 		.of_match_table = rt4831_bl_of_match,
 	},
 	.probe = rt4831_bl_probe,
-	.remove = rt4831_bl_remove,
+	.remove_new = rt4831_bl_remove,
 };
 module_platform_driver(rt4831_bl_driver);
 

drivers/video/backlight/sky81452-backlight.c

@@ -311,7 +311,7 @@ static int sky81452_bl_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int sky81452_bl_remove(struct platform_device *pdev)
+static void sky81452_bl_remove(struct platform_device *pdev)
 {
 	const struct sky81452_bl_platform_data *pdata =
 						dev_get_platdata(&pdev->dev);
@@ -325,8 +325,6 @@ static int sky81452_bl_remove(struct platform_device *pdev)
 
 	if (pdata->gpiod_enable)
 		gpiod_set_value_cansleep(pdata->gpiod_enable, 0);
-
-	return 0;
 }
 
 #ifdef CONFIG_OF
@@ -343,7 +341,7 @@ static struct platform_driver sky81452_bl_driver = {
 		.of_match_table = of_match_ptr(sky81452_bl_of_match),
 	},
 	.probe = sky81452_bl_probe,
-	.remove = sky81452_bl_remove,
+	.remove_new = sky81452_bl_remove,
 };
 
 module_platform_driver(sky81452_bl_driver);