Merge tag 'backlight-next-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

Pull backlight updates from Lee Jones:
 "Switch pwm_bl and corgi_lcd drivers to use GPIO descriptors"

* tag 'backlight-next-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
  backlight: corgi: Convert to use GPIO descriptors
  backlight: pwm_bl: Switch to full GPIO descriptor

2 files changed, 18 insertions, 69 deletions

diff --git a/drivers/video/backlight/corgi_lcd.c b/drivers/video/backlight/corgi_lcd.c
index 68f7592c5060..25ef0cbd7583 100644
--- a/drivers/video/backlight/corgi_lcd.c
+++ b/drivers/video/backlight/corgi_lcd.c
@@ -15,7 +15,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/delay.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/fb.h>
 #include <linux/lcd.h>
 #include <linux/spi/spi.h>
@@ -90,9 +90,8 @@ struct corgi_lcd {
 	int	mode;
 	char	buf[2];
 
-	int	gpio_backlight_on;
-	int	gpio_backlight_cont;
-	int	gpio_backlight_cont_inverted;
+	struct gpio_desc *backlight_on;
+	struct gpio_desc *backlight_cont;
 
 	void (*kick_battery)(void);
 };
@@ -403,13 +402,13 @@ static int corgi_bl_set_intensity(struct corgi_lcd *lcd, int intensity)
 	corgi_ssp_lcdtg_send(lcd, DUTYCTRL_ADRS, intensity);
 
 	/* Bit 5 via GPIO_BACKLIGHT_CONT */
-	cont = !!(intensity & 0x20) ^ lcd->gpio_backlight_cont_inverted;
+	cont = !!(intensity & 0x20);
 
-	if (gpio_is_valid(lcd->gpio_backlight_cont))
-		gpio_set_value_cansleep(lcd->gpio_backlight_cont, cont);
+	if (lcd->backlight_cont)
+		gpiod_set_value_cansleep(lcd->backlight_cont, cont);
 
-	if (gpio_is_valid(lcd->gpio_backlight_on))
-		gpio_set_value_cansleep(lcd->gpio_backlight_on, intensity);
+	if (lcd->backlight_on)
+		gpiod_set_value_cansleep(lcd->backlight_on, intensity);
 
 	if (lcd->kick_battery)
 		lcd->kick_battery();
@@ -482,48 +481,17 @@ static int setup_gpio_backlight(struct corgi_lcd *lcd,
 				struct corgi_lcd_platform_data *pdata)
 {
 	struct spi_device *spi = lcd->spi_dev;
-	int err;
-
-	lcd->gpio_backlight_on = -1;
-	lcd->gpio_backlight_cont = -1;
-
-	if (gpio_is_valid(pdata->gpio_backlight_on)) {
-		err = devm_gpio_request(&spi->dev, pdata->gpio_backlight_on,
-					"BL_ON");
-		if (err) {
-			dev_err(&spi->dev,
-				"failed to request GPIO%d for backlight_on\n",
-				pdata->gpio_backlight_on);
-			return err;
-		}
-
-		lcd->gpio_backlight_on = pdata->gpio_backlight_on;
-		gpio_direction_output(lcd->gpio_backlight_on, 0);
-	}
 
-	if (gpio_is_valid(pdata->gpio_backlight_cont)) {
-		err = devm_gpio_request(&spi->dev, pdata->gpio_backlight_cont,
-					"BL_CONT");
-		if (err) {
-			dev_err(&spi->dev,
-				"failed to request GPIO%d for backlight_cont\n",
-				pdata->gpio_backlight_cont);
-			return err;
-		}
-
-		lcd->gpio_backlight_cont = pdata->gpio_backlight_cont;
-
-		/* spitz and akita use both GPIOs for backlight, and
-		 * have inverted polarity of GPIO_BACKLIGHT_CONT
-		 */
-		if (gpio_is_valid(lcd->gpio_backlight_on)) {
-			lcd->gpio_backlight_cont_inverted = 1;
-			gpio_direction_output(lcd->gpio_backlight_cont, 1);
-		} else {
-			lcd->gpio_backlight_cont_inverted = 0;
-			gpio_direction_output(lcd->gpio_backlight_cont, 0);
-		}
-	}
+	lcd->backlight_on = devm_gpiod_get_optional(&spi->dev,
+						    "BL_ON", GPIOD_OUT_LOW);
+	if (IS_ERR(lcd->backlight_on))
+		return PTR_ERR(lcd->backlight_on);
+
+	lcd->backlight_cont = devm_gpiod_get_optional(&spi->dev, "BL_CONT",
+						      GPIOD_OUT_LOW);
+	if (IS_ERR(lcd->backlight_cont))
+		return PTR_ERR(lcd->backlight_cont);
+
 	return 0;
 }
 
diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
index efb4efc2a13d..82b8d7594701 100644
--- a/drivers/video/backlight/pwm_bl.c
+++ b/drivers/video/backlight/pwm_bl.c
@@ -7,7 +7,6 @@
 
 #include <linux/delay.h>
 #include <linux/gpio/consumer.h>
-#include <linux/gpio.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
@@ -258,8 +257,6 @@ static int pwm_backlight_parse_dt(struct device *dev,
 			     &data->post_pwm_on_delay);
 	of_property_read_u32(node, "pwm-off-delay-ms", &data->pwm_off_delay);
 
-	data->enable_gpio = -EINVAL;
-
 	/*
 	 * Determine the number of brightness levels, if this property is not
 	 * set a default table of brightness levels will be used.
@@ -503,22 +500,6 @@ static int pwm_backlight_probe(struct platform_device *pdev)
 	}
 
 	/*
-	 * Compatibility fallback for drivers still using the integer GPIO
-	 * platform data. Must go away soon.
-	 */
-	if (!pb->enable_gpio && gpio_is_valid(data->enable_gpio)) {
-		ret = devm_gpio_request_one(&pdev->dev, data->enable_gpio,
-					    GPIOF_OUT_INIT_HIGH, "enable");
-		if (ret < 0) {
-			dev_err(&pdev->dev, "failed to request GPIO#%d: %d\n",
-				data->enable_gpio, ret);
-			goto err_alloc;
-		}
-
-		pb->enable_gpio = gpio_to_desc(data->enable_gpio);
-	}
-
-	/*
 	 * If the GPIO is not known to be already configured as output, that
 	 * is, if gpiod_get_direction returns either 1 or -EINVAL, change the
 	 * direction to output and set the GPIO as active.