add lvds1024*800

hc

2024-01-31 f70575805708cabdedea7498aaa3f710fde4d920

 kernel/drivers/video/backlight/bd6107.c
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@@ -1,20 +1,17 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * ROHM Semiconductor BD6107 LED Driver
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  *
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  * Copyright (C) 2013 Ideas on board SPRL
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  *
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  * Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.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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9
 
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 #include <linux/backlight.h>
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 #include <linux/delay.h>
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 #include <linux/err.h>
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 #include <linux/fb.h>
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-#include <linux/gpio.h>
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+#include <linux/gpio/consumer.h>
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 #include <linux/i2c.h>
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 #include <linux/module.h>
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 #include <linux/platform_data/bd6107.h>
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@@ -74,6 +71,7 @@
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 	struct i2c_client *client;
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 	struct backlight_device *backlight;
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 	struct bd6107_platform_data *pdata;
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+	struct gpio_desc *reset;
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 };
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 static int bd6107_write(struct bd6107 *bd, u8 reg, u8 data)
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@@ -84,12 +82,7 @@
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 static int bd6107_backlight_update_status(struct backlight_device *backlight)
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 {
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 	struct bd6107 *bd = bl_get_data(backlight);
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-	int brightness = backlight->props.brightness;
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-
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-	if (backlight->props.power != FB_BLANK_UNBLANK ||
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-	    backlight->props.fb_blank != FB_BLANK_UNBLANK ||
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-	    backlight->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
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-		brightness = 0;
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+	int brightness = backlight_get_brightness(backlight);
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 	if (brightness) {
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 		bd6107_write(bd, BD6107_PORTSEL, BD6107_PORTSEL_LEDM(2) |
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@@ -97,9 +90,10 @@
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 		bd6107_write(bd, BD6107_MAINCNT1, brightness);
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 		bd6107_write(bd, BD6107_LEDCNT1, BD6107_LEDCNT1_LEDONOFF1);
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 	} else {
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-		gpio_set_value(bd->pdata->reset, 0);
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+		/* Assert the reset line (gpiolib will handle active low) */
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+		gpiod_set_value(bd->reset, 1);
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 		msleep(24);
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-		gpio_set_value(bd->pdata->reset, 1);
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+		gpiod_set_value(bd->reset, 0);
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 	}
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 	return 0;
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@@ -110,7 +104,7 @@
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 {
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 	struct bd6107 *bd = bl_get_data(backlight);
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-	return bd->pdata->fbdev == NULL || bd->pdata->fbdev == info->dev;
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+	return bd->pdata->fbdev == NULL || bd->pdata->fbdev == info->device;
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 }
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 static const struct backlight_ops bd6107_backlight_ops = {
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@@ -128,8 +122,8 @@
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 	struct bd6107 *bd;
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 	int ret;
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-	if (pdata == NULL || !pdata->reset) {
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-		dev_err(&client->dev, "No reset GPIO in platform data\n");
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+	if (pdata == NULL) {
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+		dev_err(&client->dev, "No platform data\n");
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 		return -EINVAL;
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 	}
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@@ -147,10 +141,16 @@
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 	bd->client = client;
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 	bd->pdata = pdata;
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-	ret = devm_gpio_request_one(&client->dev, pdata->reset,
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-				    GPIOF_DIR_OUT | GPIOF_INIT_LOW, "reset");
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-	if (ret < 0) {
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+	/*
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+	 * Request the reset GPIO line with GPIOD_OUT_HIGH meaning asserted,
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+	 * so in the machine descriptor table (or other hardware description),
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+	 * the line should be flagged as active low so this will assert
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+	 * the reset.
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+	 */
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+	bd->reset = devm_gpiod_get(&client->dev, "reset", GPIOD_OUT_HIGH);
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+	if (IS_ERR(bd->reset)) {
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 		dev_err(&client->dev, "unable to request reset GPIO\n");
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+		ret = PTR_ERR(bd->reset);
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 		return ret;
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 	}
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