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2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87

 kernel/drivers/mfd/ti-lmu.c
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@@ -1,18 +1,15 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * TI LMU (Lighting Management Unit) Core Driver
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  *
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  * Copyright 2017 Texas Instruments
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  *
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  * Author: Milo Kim <milo.kim@ti.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/delay.h>
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 #include <linux/err.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/kernel.h>
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 #include <linux/mfd/core.h>
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..
@@ -21,28 +18,18 @@
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 #include <linux/module.h>
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 #include <linux/of.h>
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 #include <linux/of_device.h>
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-#include <linux/of_gpio.h>
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 #include <linux/slab.h>
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22
 
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 struct ti_lmu_data {
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-	struct mfd_cell *cells;
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+	const struct mfd_cell *cells;
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 	int num_cells;
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 	unsigned int max_register;
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 };
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 static int ti_lmu_enable_hw(struct ti_lmu *lmu, enum ti_lmu_id id)
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 {
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-	int ret;
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-
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-	if (gpio_is_valid(lmu->en_gpio)) {
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-		ret = devm_gpio_request_one(lmu->dev, lmu->en_gpio,
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-					    GPIOF_OUT_INIT_HIGH, "lmu_hwen");
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-		if (ret) {
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-			dev_err(lmu->dev, "Can not request enable GPIO: %d\n",
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-				ret);
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-			return ret;
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-		}
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-	}
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+	if (lmu->en_gpio)
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+		gpiod_set_value(lmu->en_gpio, 1);
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33
 
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 	/* Delay about 1ms after HW enable pin control */
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 	usleep_range(1000, 1500);
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@@ -57,19 +44,12 @@
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 	return 0;
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 }
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46
 
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-static void ti_lmu_disable_hw(struct ti_lmu *lmu)
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+static void ti_lmu_disable_hw(void *data)
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 {
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-	if (gpio_is_valid(lmu->en_gpio))
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-		gpio_set_value(lmu->en_gpio, 0);
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+	struct ti_lmu *lmu = data;
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+	if (lmu->en_gpio)
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+		gpiod_set_value(lmu->en_gpio, 0);
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 }
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-
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-static struct mfd_cell lm3532_devices[] = {
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-	{
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-		.name          = "ti-lmu-backlight",
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-		.id            = LM3532,
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-		.of_compatible = "ti,lm3532-backlight",
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-	},
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-};
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 #define LM363X_REGULATOR(_id)			\
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 {						\
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@@ -78,7 +58,7 @@
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 	.of_compatible = "ti,lm363x-regulator",	\
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 }						\
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60
 
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-static struct mfd_cell lm3631_devices[] = {
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+static const struct mfd_cell lm3631_devices[] = {
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 	LM363X_REGULATOR(LM3631_BOOST),
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 	LM363X_REGULATOR(LM3631_LDO_CONT),
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 	LM363X_REGULATOR(LM3631_LDO_OREF),
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@@ -91,7 +71,7 @@
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 	},
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 };
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-static struct mfd_cell lm3632_devices[] = {
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+static const struct mfd_cell lm3632_devices[] = {
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 	LM363X_REGULATOR(LM3632_BOOST),
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 	LM363X_REGULATOR(LM3632_LDO_POS),
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 	LM363X_REGULATOR(LM3632_LDO_NEG),
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@@ -102,7 +82,7 @@
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 	},
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 };
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-static struct mfd_cell lm3633_devices[] = {
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+static const struct mfd_cell lm3633_devices[] = {
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 	{
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 		.name          = "ti-lmu-backlight",
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 		.id            = LM3633,
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@@ -120,7 +100,7 @@
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 	},
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 };
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-static struct mfd_cell lm3695_devices[] = {
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+static const struct mfd_cell lm3695_devices[] = {
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 	{
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 		.name          = "ti-lmu-backlight",
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 		.id            = LM3695,
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@@ -128,17 +108,14 @@
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 	},
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 };
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-static struct mfd_cell lm3697_devices[] = {
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+static const struct mfd_cell lm36274_devices[] = {
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+	LM363X_REGULATOR(LM36274_BOOST),
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+	LM363X_REGULATOR(LM36274_LDO_POS),
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+	LM363X_REGULATOR(LM36274_LDO_NEG),
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 	{
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-		.name          = "ti-lmu-backlight",
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-		.id            = LM3697,
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-		.of_compatible = "ti,lm3697-backlight",
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-	},
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-	/* Monitoring driver for open/short circuit detection */
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-	{
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-		.name          = "ti-lmu-fault-monitor",
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-		.id            = LM3697,
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-		.of_compatible = "ti,lm3697-fault-monitor",
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+		.name          = "lm36274-leds",
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+		.id            = LM36274,
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+		.of_compatible = "ti,lm36274-backlight",
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 	},
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 };
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@@ -150,41 +127,27 @@
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127
 	.max_register = max_reg,		\
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128
 }						\
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129
 
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-TI_LMU_DATA(lm3532, LM3532_MAX_REG);
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 TI_LMU_DATA(lm3631, LM3631_MAX_REG);
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 TI_LMU_DATA(lm3632, LM3632_MAX_REG);
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 TI_LMU_DATA(lm3633, LM3633_MAX_REG);
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 TI_LMU_DATA(lm3695, LM3695_MAX_REG);
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-TI_LMU_DATA(lm3697, LM3697_MAX_REG);
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-
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-static const struct of_device_id ti_lmu_of_match[] = {
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-	{ .compatible = "ti,lm3532", .data = &lm3532_data },
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-	{ .compatible = "ti,lm3631", .data = &lm3631_data },
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-	{ .compatible = "ti,lm3632", .data = &lm3632_data },
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-	{ .compatible = "ti,lm3633", .data = &lm3633_data },
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-	{ .compatible = "ti,lm3695", .data = &lm3695_data },
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-	{ .compatible = "ti,lm3697", .data = &lm3697_data },
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-	{ }
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-};
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-MODULE_DEVICE_TABLE(of, ti_lmu_of_match);
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+TI_LMU_DATA(lm36274, LM36274_MAX_REG);
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135
 
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 static int ti_lmu_probe(struct i2c_client *cl, const struct i2c_device_id *id)
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 {
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 	struct device *dev = &cl->dev;
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-	const struct of_device_id *match;
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 	const struct ti_lmu_data *data;
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 	struct regmap_config regmap_cfg;
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 	struct ti_lmu *lmu;
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 	int ret;
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-	match = of_match_device(ti_lmu_of_match, dev);
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-	if (!match)
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-		return -ENODEV;
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 	/*
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 	 * Get device specific data from of_match table.
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 	 * This data is defined by using TI_LMU_DATA() macro.
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 	 */
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-	data = (struct ti_lmu_data *)match->data;
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+	data = of_device_get_match_data(dev);
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+	if (!data)
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+		return -ENODEV;
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 	lmu = devm_kzalloc(dev, sizeof(*lmu), GFP_KERNEL);
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 	if (!lmu)
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@@ -204,8 +167,18 @@
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 		return PTR_ERR(lmu->regmap);
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168
 
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 	/* HW enable pin control and additional power up sequence if required */
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-	lmu->en_gpio = of_get_named_gpio(dev->of_node, "enable-gpios", 0);
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+	lmu->en_gpio = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_HIGH);
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+	if (IS_ERR(lmu->en_gpio)) {
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+		ret = PTR_ERR(lmu->en_gpio);
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+		dev_err(dev, "Can not request enable GPIO: %d\n", ret);
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+		return ret;
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+	}
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+
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 	ret = ti_lmu_enable_hw(lmu, id->driver_data);
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+	if (ret)
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+		return ret;
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+
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+	ret = devm_add_action_or_reset(dev, ti_lmu_disable_hw, lmu);
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 	if (ret)
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 		return ret;
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..
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@@ -218,33 +191,32 @@
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191
 
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 	i2c_set_clientdata(cl, lmu);
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-	return mfd_add_devices(lmu->dev, 0, data->cells,
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-			       data->num_cells, NULL, 0, NULL);
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+	return devm_mfd_add_devices(lmu->dev, 0, data->cells,
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+				    data->num_cells, NULL, 0, NULL);
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 }
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-static int ti_lmu_remove(struct i2c_client *cl)
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-{
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-	struct ti_lmu *lmu = i2c_get_clientdata(cl);
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-
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-	ti_lmu_disable_hw(lmu);
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-	mfd_remove_devices(lmu->dev);
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-	return 0;
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-}
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+static const struct of_device_id ti_lmu_of_match[] = {
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+	{ .compatible = "ti,lm3631", .data = &lm3631_data },
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+	{ .compatible = "ti,lm3632", .data = &lm3632_data },
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+	{ .compatible = "ti,lm3633", .data = &lm3633_data },
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+	{ .compatible = "ti,lm3695", .data = &lm3695_data },
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+	{ .compatible = "ti,lm36274", .data = &lm36274_data },
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+	{ }
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+};
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+MODULE_DEVICE_TABLE(of, ti_lmu_of_match);
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207
 
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 static const struct i2c_device_id ti_lmu_ids[] = {
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-	{ "lm3532", LM3532 },
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 	{ "lm3631", LM3631 },
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 	{ "lm3632", LM3632 },
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 	{ "lm3633", LM3633 },
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 	{ "lm3695", LM3695 },
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-	{ "lm3697", LM3697 },
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+	{ "lm36274", LM36274 },
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 	{ }
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 };
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 MODULE_DEVICE_TABLE(i2c, ti_lmu_ids);
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 static struct i2c_driver ti_lmu_driver = {
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 	.probe = ti_lmu_probe,
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-	.remove = ti_lmu_remove,
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 	.driver = {
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 		.name = "ti-lmu",
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 		.of_match_table = ti_lmu_of_match,