add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/leds/leds-bd2802.c
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@@ -1,20 +1,16 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * leds-bd2802.c - RGB LED Driver
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  *
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  * Copyright (C) 2009 Samsung Electronics
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  * Kim Kyuwon <q1.kim@samsung.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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  * Datasheet: http://www.rohm.com/products/databook/driver/pdf/bd2802gu-e.pdf
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- *
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  */
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 #include <linux/module.h>
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 #include <linux/i2c.h>
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-#include <linux/gpio.h>
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+#include <linux/gpio/consumer.h>
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 #include <linux/delay.h>
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 #include <linux/leds.h>
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 #include <linux/leds-bd2802.h>
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@@ -71,6 +67,7 @@
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 struct bd2802_led {
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 	struct bd2802_led_platform_data	*pdata;
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 	struct i2c_client		*client;
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+	struct gpio_desc		*reset;
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 	struct rw_semaphore		rwsem;
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 	struct led_state		led[2];
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@@ -204,7 +201,7 @@
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 		return;
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 	if (bd2802_is_all_off(led) && !led->adf_on) {
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-		gpio_set_value(led->pdata->reset_gpio, 0);
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+		gpiod_set_value(led->reset, 1);
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 		return;
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 	}
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@@ -230,7 +227,7 @@
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 static void bd2802_reset_cancel(struct bd2802_led *led)
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 {
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-	gpio_set_value(led->pdata->reset_gpio, 1);
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+	gpiod_set_value(led->reset, 0);
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 	udelay(100);
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 	bd2802_configure(led);
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 }
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@@ -424,7 +421,7 @@
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 						bd2802_addr_attributes[i]);
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 	if (bd2802_is_all_off(led))
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-		gpio_set_value(led->pdata->reset_gpio, 0);
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+		gpiod_set_value(led->reset, 1);
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 	led->adf_on = 0;
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 }
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@@ -663,7 +660,6 @@
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 			const struct i2c_device_id *id)
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 {
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 	struct bd2802_led *led;
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-	struct bd2802_led_platform_data *pdata;
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 	int ret, i;
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 	led = devm_kzalloc(&client->dev, sizeof(struct bd2802_led), GFP_KERNEL);
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@@ -671,11 +667,18 @@
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 		return -ENOMEM;
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 	led->client = client;
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-	pdata = led->pdata = dev_get_platdata(&client->dev);
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 	i2c_set_clientdata(client, led);
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-	/* Configure RESET GPIO (L: RESET, H: RESET cancel) */
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-	gpio_request_one(pdata->reset_gpio, GPIOF_OUT_INIT_HIGH, "RGB_RESETB");
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+	/*
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+	 * Configure RESET GPIO (L: RESET, H: RESET cancel)
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+	 *
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+	 * We request the reset GPIO as OUT_LOW which means de-asserted,
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+	 * board files specifying this GPIO line in a machine descriptor
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+	 * table should take care to specify GPIO_ACTIVE_LOW for this line.
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+	 */
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+	led->reset = devm_gpiod_get(&client->dev, "reset", GPIOD_OUT_LOW);
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+	if (IS_ERR(led->reset))
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+		return PTR_ERR(led->reset);
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 	/* Tacss = min 0.1ms */
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 	udelay(100);
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@@ -689,7 +692,7 @@
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 		dev_info(&client->dev, "return 0x%02x\n", ret);
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 	/* To save the power, reset BD2802 after detecting */
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-	gpio_set_value(led->pdata->reset_gpio, 0);
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+	gpiod_set_value(led->reset, 1);
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 	/* Default attributes */
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 	led->wave_pattern = BD2802_PATTERN_HALF;
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@@ -724,7 +727,7 @@
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 	struct bd2802_led *led = i2c_get_clientdata(client);
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 	int i;
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-	gpio_set_value(led->pdata->reset_gpio, 0);
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+	gpiod_set_value(led->reset, 1);
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 	bd2802_unregister_led_classdev(led);
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 	if (led->adf_on)
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 		bd2802_disable_adv_conf(led);
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@@ -754,7 +757,7 @@
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 	struct i2c_client *client = to_i2c_client(dev);
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 	struct bd2802_led *led = i2c_get_clientdata(client);
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-	gpio_set_value(led->pdata->reset_gpio, 0);
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+	gpiod_set_value(led->reset, 1);
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 	return 0;
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 }