backlight: l4f00242t03: Convert to GPIO descriptors

diff --git a/arch/arm/mach-imx/mach-mx27_3ds.c b/arch/arm/mach-imx/mach-mx27_3ds.c
index 7b8325fb5b41..1da5f07952ac 100644
--- a/arch/arm/mach-imx/mach-mx27_3ds.c
+++ b/arch/arm/mach-imx/mach-mx27_3ds.c
@@ -13,6 +13,7 @@ 
 
 #include <linux/platform_device.h>
 #include <linux/gpio.h>
+#include <linux/gpio/machine.h>
 #include <linux/irq.h>
 #include <linux/usb/otg.h>
 #include <linux/usb/ulpi.h>
@@ -20,8 +21,6 @@ 
 #include <linux/mfd/mc13783.h>
 #include <linux/spi/spi.h>
 #include <linux/regulator/machine.h>
-#include <linux/spi/l4f00242t03.h>
-
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -351,9 +350,19 @@  static const struct imx_fb_platform_data mx27_3ds_fb_data __initconst = {
 };
 
 /* LCD */
-static struct l4f00242t03_pdata mx27_3ds_lcd_pdata = {
-	.reset_gpio		= LCD_RESET,
-	.data_enable_gpio	= LCD_ENABLE,
+static struct gpiod_lookup_table mx27_3ds_lcd_gpiod_table = {
+	.dev_id = "spi0.0", /* Bus 0 chipselect 0 */
+	.table = {
+		/*
+		 * The i.MX27 has the i.MX21 GPIO controller, the GPIOs
+		 * numbered IMX_GPIO_NR(1, 3) and IMX_GPIO_NR(1, 31)
+		 * are in "bank 1" which is subtracted by one in the macro
+		 * so these are actually bank 0 on "imx21-gpio.0".
+		 */
+		GPIO_LOOKUP("imx21-gpio.0", 3, "reset", GPIO_ACTIVE_HIGH),
+		GPIO_LOOKUP("imx21-gpio.0", 31, "enable", GPIO_ACTIVE_HIGH),
+		{ },
+	},
 };
 
 static struct spi_board_info mx27_3ds_spi_devs[] __initdata = {
@@ -370,7 +379,6 @@  static struct spi_board_info mx27_3ds_spi_devs[] __initdata = {
 		.max_speed_hz	= 5000000,
 		.bus_num	= 0,
 		.chip_select	= 0, /* SS0 */
-		.platform_data	= &mx27_3ds_lcd_pdata,
 	},
 };
 
@@ -416,6 +424,7 @@  static void __init mx27pdk_late_init(void)
 	if (!otg_mode_host)
 		imx27_add_fsl_usb2_udc(&otg_device_pdata);
 
+	gpiod_add_lookup_table(&mx27_3ds_lcd_gpiod_table);
 	mx27_3ds_spi_devs[0].irq = gpio_to_irq(PMIC_INT);
 	spi_register_board_info(mx27_3ds_spi_devs,
 				ARRAY_SIZE(mx27_3ds_spi_devs));
diff --git a/arch/arm/mach-imx/mach-mx31_3ds.c b/arch/arm/mach-imx/mach-mx31_3ds.c
index 716d2ad51103..e81386190479 100644
--- a/arch/arm/mach-imx/mach-mx31_3ds.c
+++ b/arch/arm/mach-imx/mach-mx31_3ds.c
@@ -10,10 +10,10 @@ 
 #include <linux/clk.h>
 #include <linux/irq.h>
 #include <linux/gpio.h>
+#include <linux/gpio/machine.h>
 #include <linux/platform_device.h>
 #include <linux/mfd/mc13783.h>
 #include <linux/spi/spi.h>
-#include <linux/spi/l4f00242t03.h>
 #include <linux/regulator/machine.h>
 #include <linux/usb/otg.h>
 #include <linux/usb/ulpi.h>
@@ -160,9 +160,23 @@  static struct mx3fb_platform_data mx3fb_pdata __initdata = {
 };
 
 /* LCD */
-static struct l4f00242t03_pdata mx31_3ds_l4f00242t03_pdata = {
-	.reset_gpio		= IOMUX_TO_GPIO(MX31_PIN_LCS1),
-	.data_enable_gpio	= IOMUX_TO_GPIO(MX31_PIN_SER_RS),
+static struct gpiod_lookup_table mx31_3ds_lcd_gpiod_table = {
+	.dev_id = "spi0.2", /* Bus 0 chipselect 2 */
+	.table = {
+		/*
+		 * "reset" has IOMUX_TO_GPIO(IOMUX_PIN(88, 28)).
+		 * The macro only shifts 88 to bits 9..16 and then
+		 * mask it and shift it back. The GPIO number is 88.
+		 * 88 is 2*32+24
+		 */
+		GPIO_LOOKUP("imx31-gpio.2", 24, "reset", GPIO_ACTIVE_HIGH),
+		/*
+		 * Same reasoning as above for
+		 * IOMUX_TO_GPIO(IOMUX_PIN(89, 27), pin 89 is 2*32+25.
+		 */
+		GPIO_LOOKUP("imx31-gpio.2", 25, "enable", GPIO_ACTIVE_HIGH),
+		{ },
+	},
 };
 
 /*
@@ -387,7 +401,6 @@  static struct spi_board_info mx31_3ds_spi_devs[] __initdata = {
 		.max_speed_hz	= 5000000,
 		.bus_num	= 0,
 		.chip_select	= 2, /* SS2 */
-		.platform_data	= &mx31_3ds_l4f00242t03_pdata,
 	},
 };
 
@@ -566,6 +579,7 @@  static void __init mx31_3ds_init(void)
 
 static void __init mx31_3ds_late(void)
 {
+	gpiod_add_lookup_table(&mx31_3ds_lcd_gpiod_table);
 	mx31_3ds_spi_devs[0].irq = gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3));
 	spi_register_board_info(mx31_3ds_spi_devs,
 				ARRAY_SIZE(mx31_3ds_spi_devs));
diff --git a/drivers/video/backlight/l4f00242t03.c b/drivers/video/backlight/l4f00242t03.c
index 8554b4aa980c..46f97d1c3d21 100644
--- a/drivers/video/backlight/l4f00242t03.c
+++ b/drivers/video/backlight/l4f00242t03.c
@@ -14,13 +14,11 @@ 
 #include <linux/kernel.h>
 #include <linux/delay.h>
 #include <linux/module.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/lcd.h>
 #include <linux/slab.h>
 #include <linux/regulator/consumer.h>
-
 #include <linux/spi/spi.h>
-#include <linux/spi/l4f00242t03.h>
 
 struct l4f00242t03_priv {
 	struct spi_device	*spi;
@@ -28,16 +26,18 @@  struct l4f00242t03_priv {
 	int lcd_state;
 	struct regulator *io_reg;
 	struct regulator *core_reg;
+	struct gpio_desc *reset;
+	struct gpio_desc *enable;
 };
 
-static void l4f00242t03_reset(unsigned int gpio)
+static void l4f00242t03_reset(struct gpio_desc *gpiod)
 {
 	pr_debug("l4f00242t03_reset.\n");
-	gpio_set_value(gpio, 1);
+	gpiod_set_value(gpiod, 1);
 	mdelay(100);
-	gpio_set_value(gpio, 0);
+	gpiod_set_value(gpiod, 0);
 	mdelay(10);	/* tRES >= 100us */
-	gpio_set_value(gpio, 1);
+	gpiod_set_value(gpiod, 1);
 	mdelay(20);
 }
 
@@ -45,7 +45,6 @@  static void l4f00242t03_reset(unsigned int gpio)
 
 static void l4f00242t03_lcd_init(struct spi_device *spi)
 {
-	struct l4f00242t03_pdata *pdata = dev_get_platdata(&spi->dev);
 	struct l4f00242t03_priv *priv = spi_get_drvdata(spi);
 	const u16 cmd[] = { 0x36, param(0), 0x3A, param(0x60) };
 	int ret;
@@ -76,21 +75,20 @@  static void l4f00242t03_lcd_init(struct spi_device *spi)
 		return;
 	}
 
-	l4f00242t03_reset(pdata->reset_gpio);
+	l4f00242t03_reset(priv->reset);
 
-	gpio_set_value(pdata->data_enable_gpio, 1);
+	gpiod_set_value(priv->enable, 1);
 	msleep(60);
 	spi_write(spi, (const u8 *)cmd, ARRAY_SIZE(cmd) * sizeof(u16));
 }
 
 static void l4f00242t03_lcd_powerdown(struct spi_device *spi)
 {
-	struct l4f00242t03_pdata *pdata = dev_get_platdata(&spi->dev);
 	struct l4f00242t03_priv *priv = spi_get_drvdata(spi);
 
 	dev_dbg(&spi->dev, "Powering down LCD\n");
 
-	gpio_set_value(pdata->data_enable_gpio, 0);
+	gpiod_set_value(priv->enable, 0);
 
 	regulator_disable(priv->io_reg);
 	regulator_disable(priv->core_reg);
@@ -168,13 +166,6 @@  static struct lcd_ops l4f_ops = {
 static int l4f00242t03_probe(struct spi_device *spi)
 {
 	struct l4f00242t03_priv *priv;
-	struct l4f00242t03_pdata *pdata = dev_get_platdata(&spi->dev);
-	int ret;
-
-	if (pdata == NULL) {
-		dev_err(&spi->dev, "Uninitialized platform data.\n");
-		return -EINVAL;
-	}
 
 	priv = devm_kzalloc(&spi->dev, sizeof(struct l4f00242t03_priv),
 				GFP_KERNEL);
@@ -187,21 +178,21 @@  static int l4f00242t03_probe(struct spi_device *spi)
 
 	priv->spi = spi;
 
-	ret = devm_gpio_request_one(&spi->dev, pdata->reset_gpio,
-			GPIOF_OUT_INIT_HIGH, "lcd l4f00242t03 reset");
-	if (ret) {
+	priv->reset = devm_gpiod_get(&spi->dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(priv->reset)) {
 		dev_err(&spi->dev,
 			"Unable to get the lcd l4f00242t03 reset gpio.\n");
-		return ret;
+		return PTR_ERR(priv->reset);
 	}
+	gpiod_set_consumer_name(priv->reset, "lcd l4f00242t03 reset");
 
-	ret = devm_gpio_request_one(&spi->dev, pdata->data_enable_gpio,
-			GPIOF_OUT_INIT_LOW, "lcd l4f00242t03 data enable");
-	if (ret) {
+	priv->enable = devm_gpiod_get(&spi->dev, "enable", GPIOD_OUT_LOW);
+	if (IS_ERR(priv->enable)) {
 		dev_err(&spi->dev,
 			"Unable to get the lcd l4f00242t03 data en gpio.\n");
-		return ret;
+		return PTR_ERR(priv->enable);
 	}
+	gpiod_set_consumer_name(priv->enable, "lcd l4f00242t03 data enable");
 
 	priv->io_reg = devm_regulator_get(&spi->dev, "vdd");
 	if (IS_ERR(priv->io_reg)) {
diff --git a/include/linux/spi/l4f00242t03.h b/include/linux/spi/l4f00242t03.h
deleted file mode 100644
index 831a5de7a0e2..000000000000
--- a/include/linux/spi/l4f00242t03.h
+++ /dev/null
@@ -1,17 +0,0 @@ 
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * l4f00242t03.h -- Platform glue for Epson L4F00242T03 LCD
- *
- * Copyright (c) 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com>
- * Based on Marek Vasut work in lms283gf05.h
-*/
-
-#ifndef _INCLUDE_LINUX_SPI_L4F00242T03_H_
-#define _INCLUDE_LINUX_SPI_L4F00242T03_H_
-
-struct l4f00242t03_pdata {
-	unsigned int	reset_gpio;
-	unsigned int	data_enable_gpio;
-};
-
-#endif /* _INCLUDE_LINUX_SPI_L4F00242T03_H_ */