add lvds1024*800

hc

2024-01-31 f70575805708cabdedea7498aaa3f710fde4d920

 kernel/drivers/video/backlight/corgi_lcd.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  *  LCD/Backlight Driver for Sharp Zaurus Handhelds (various models)
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  *
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@@ -8,18 +9,13 @@
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  *  Copyright (c) 2008 Marvell International Ltd.
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  *	Converted to SPI device based LCD/Backlight device driver
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  *	by Eric Miao <eric.miao@marvell.com>
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- *
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- *  This program is free software; you can redistribute it and/or modify
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- *  it under the terms of the GNU General Public License version 2 as
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- *  published by the Free Software Foundation.
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- *
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  */
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13
 
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 #include <linux/module.h>
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 #include <linux/kernel.h>
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 #include <linux/init.h>
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 #include <linux/delay.h>
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-#include <linux/gpio.h>
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+#include <linux/gpio/consumer.h>
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 #include <linux/fb.h>
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 #include <linux/lcd.h>
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 #include <linux/spi/spi.h>
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@@ -94,9 +90,8 @@
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 	int	mode;
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 	char	buf[2];
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-	int	gpio_backlight_on;
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-	int	gpio_backlight_cont;
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-	int	gpio_backlight_cont_inverted;
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+	struct gpio_desc *backlight_on;
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+	struct gpio_desc *backlight_cont;
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 	void (*kick_battery)(void);
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 };
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@@ -407,13 +402,13 @@
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 	corgi_ssp_lcdtg_send(lcd, DUTYCTRL_ADRS, intensity);
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 	/* Bit 5 via GPIO_BACKLIGHT_CONT */
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-	cont = !!(intensity & 0x20) ^ lcd->gpio_backlight_cont_inverted;
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+	cont = !!(intensity & 0x20);
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-	if (gpio_is_valid(lcd->gpio_backlight_cont))
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-		gpio_set_value_cansleep(lcd->gpio_backlight_cont, cont);
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+	if (lcd->backlight_cont)
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+		gpiod_set_value_cansleep(lcd->backlight_cont, cont);
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-	if (gpio_is_valid(lcd->gpio_backlight_on))
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-		gpio_set_value_cansleep(lcd->gpio_backlight_on, intensity);
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+	if (lcd->backlight_on)
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+		gpiod_set_value_cansleep(lcd->backlight_on, intensity);
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 	if (lcd->kick_battery)
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 		lcd->kick_battery();
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@@ -425,13 +420,7 @@
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 static int corgi_bl_update_status(struct backlight_device *bd)
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 {
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 	struct corgi_lcd *lcd = bl_get_data(bd);
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-	int intensity = bd->props.brightness;
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-
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-	if (bd->props.power != FB_BLANK_UNBLANK)
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-		intensity = 0;
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-
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-	if (bd->props.fb_blank != FB_BLANK_UNBLANK)
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-		intensity = 0;
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+	int intensity = backlight_get_brightness(bd);
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 	if (corgibl_flags & CORGIBL_SUSPENDED)
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 		intensity = 0;
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@@ -486,48 +475,17 @@
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 				struct corgi_lcd_platform_data *pdata)
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 {
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 	struct spi_device *spi = lcd->spi_dev;
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-	int err;
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-	lcd->gpio_backlight_on = -1;
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-	lcd->gpio_backlight_cont = -1;
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+	lcd->backlight_on = devm_gpiod_get_optional(&spi->dev,
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+						    "BL_ON", GPIOD_OUT_LOW);
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+	if (IS_ERR(lcd->backlight_on))
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+		return PTR_ERR(lcd->backlight_on);
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-	if (gpio_is_valid(pdata->gpio_backlight_on)) {
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-		err = devm_gpio_request(&spi->dev, pdata->gpio_backlight_on,
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-					"BL_ON");
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-		if (err) {
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-			dev_err(&spi->dev,
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-				"failed to request GPIO%d for backlight_on\n",
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-				pdata->gpio_backlight_on);
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-			return err;
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-		}
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+	lcd->backlight_cont = devm_gpiod_get_optional(&spi->dev, "BL_CONT",
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+						      GPIOD_OUT_LOW);
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+	if (IS_ERR(lcd->backlight_cont))
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+		return PTR_ERR(lcd->backlight_cont);
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-		lcd->gpio_backlight_on = pdata->gpio_backlight_on;
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-		gpio_direction_output(lcd->gpio_backlight_on, 0);
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-	}
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-
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-	if (gpio_is_valid(pdata->gpio_backlight_cont)) {
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-		err = devm_gpio_request(&spi->dev, pdata->gpio_backlight_cont,
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-					"BL_CONT");
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-		if (err) {
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-			dev_err(&spi->dev,
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-				"failed to request GPIO%d for backlight_cont\n",
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-				pdata->gpio_backlight_cont);
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-			return err;
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-		}
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-
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-		lcd->gpio_backlight_cont = pdata->gpio_backlight_cont;
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-
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-		/* spitz and akita use both GPIOs for backlight, and
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-		 * have inverted polarity of GPIO_BACKLIGHT_CONT
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-		 */
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-		if (gpio_is_valid(lcd->gpio_backlight_on)) {
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-			lcd->gpio_backlight_cont_inverted = 1;
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-			gpio_direction_output(lcd->gpio_backlight_cont, 1);
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-		} else {
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-			lcd->gpio_backlight_cont_inverted = 0;
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-			gpio_direction_output(lcd->gpio_backlight_cont, 0);
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-		}
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-	}
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 	return 0;
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 }
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