video: backlight: tosa: Use GPIO lookup table

The driver should not require a machine specific header. Change
it to pass the GPIO line through a lookup table, and move the
timing generator definitions into the drivers itself.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

3 files changed, 34 insertions, 12 deletions

diff --git a/drivers/video/backlight/tosa_bl.c b/drivers/video/backlight/tosa_bl.c
index 1275e815bd86..cff5e96fd988 100644
--- a/drivers/video/backlight/tosa_bl.c
+++ b/drivers/video/backlight/tosa_bl.c
@@ -18,7 +18,7 @@
 
 #include <asm/mach/sharpsl_param.h>
 
-#include <mach/tosa.h>
+#include "tosa_bl.h"
 
 #define COMADJ_DEFAULT	97
 
@@ -28,6 +28,7 @@
 struct tosa_bl_data {
 	struct i2c_client *i2c;
 	struct backlight_device *bl;
+	struct gpio_desc *gpio;
 
 	int comadj;
 };
@@ -42,7 +43,7 @@ static void tosa_bl_set_backlight(struct tosa_bl_data *data, int brightness)
 	i2c_smbus_write_byte_data(data->i2c, DAC_CH2, (u8)(brightness & 0xff));
 
 	/* SetBacklightVR */
-	gpio_set_value(TOSA_GPIO_BL_C20MA, brightness & 0x100);
+	gpiod_set_value(data->gpio, brightness & 0x100);
 
 	tosa_bl_enable(spi, brightness);
 }
@@ -87,9 +88,8 @@ static int tosa_bl_probe(struct i2c_client *client,
 		return -ENOMEM;
 
 	data->comadj = sharpsl_param.comadj == -1 ? COMADJ_DEFAULT : sharpsl_param.comadj;
-
-	ret = devm_gpio_request_one(&client->dev, TOSA_GPIO_BL_C20MA,
-				GPIOF_OUT_INIT_LOW, "backlight");
+	data->gpio = devm_gpiod_get(&client->dev, "backlight", GPIOD_OUT_LOW);
+	ret = PTR_ERR_OR_ZERO(data->gpio);
 	if (ret) {
 		dev_dbg(&data->bl->dev, "Unable to request gpio!\n");
 		return ret;
diff --git a/drivers/video/backlight/tosa_bl.h b/drivers/video/backlight/tosa_bl.h
new file mode 100644
index 000000000000..589e17e6fdb2
--- /dev/null
+++ b/drivers/video/backlight/tosa_bl.h
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef _TOSA_BL_H
+#define _TOSA_BL_H
+
+struct spi_device;
+extern int tosa_bl_enable(struct spi_device *spi, int enable);
+
+#endif
diff --git a/drivers/video/backlight/tosa_lcd.c b/drivers/video/backlight/tosa_lcd.c
index 29af8e27b6e5..e8ab583e5098 100644
--- a/drivers/video/backlight/tosa_lcd.c
+++ b/drivers/video/backlight/tosa_lcd.c
@@ -19,7 +19,7 @@
 
 #include <asm/mach/sharpsl_param.h>
 
-#include <mach/tosa.h>
+#include "tosa_bl.h"
 
 #define POWER_IS_ON(pwr)	((pwr) <= FB_BLANK_NORMAL)
 
@@ -28,12 +28,26 @@
 #define TG_REG0_UD	0x0004
 #define TG_REG0_LR	0x0008
 
+/*
+ * Timing Generator
+ */
+#define TG_PNLCTL 	0x00
+#define TG_TPOSCTL 	0x01
+#define TG_DUTYCTL 	0x02
+#define TG_GPOSR 	0x03
+#define TG_GPODR1 	0x04
+#define TG_GPODR2 	0x05
+#define TG_PINICTL 	0x06
+#define TG_HPOSCTL 	0x07
+
+
 #define	DAC_BASE	0x4e
 
 struct tosa_lcd_data {
 	struct spi_device *spi;
 	struct lcd_device *lcd;
 	struct i2c_client *i2c;
+	struct gpio_desc *gpiod_tg;
 
 	int lcd_power;
 	bool is_vga;
@@ -66,7 +80,7 @@ EXPORT_SYMBOL(tosa_bl_enable);
 static void tosa_lcd_tg_init(struct tosa_lcd_data *data)
 {
 	/* TG on */
-	gpio_set_value(TOSA_GPIO_TG_ON, 0);
+	gpiod_set_value(data->gpiod_tg, 0);
 
 	mdelay(60);
 
@@ -100,6 +114,7 @@ static void tosa_lcd_tg_on(struct tosa_lcd_data *data)
 		 */
 		struct i2c_adapter *adap = i2c_get_adapter(0);
 		struct i2c_board_info info = {
+			.dev_name = "tosa-bl",
 			.type	= "tosa-bl",
 			.addr	= DAC_BASE,
 			.platform_data = data->spi,
@@ -121,7 +136,7 @@ static void tosa_lcd_tg_off(struct tosa_lcd_data *data)
 	mdelay(50);
 
 	/* TG Off */
-	gpio_set_value(TOSA_GPIO_TG_ON, 1);
+	gpiod_set_value(data->gpiod_tg, 1);
 	mdelay(100);
 }
 
@@ -191,10 +206,9 @@ static int tosa_lcd_probe(struct spi_device *spi)
 	data->spi = spi;
 	spi_set_drvdata(spi, data);
 
-	ret = devm_gpio_request_one(&spi->dev, TOSA_GPIO_TG_ON,
-				GPIOF_OUT_INIT_LOW, "tg #pwr");
-	if (ret < 0)
-		return ret;
+	data->gpiod_tg = devm_gpiod_get(&spi->dev, "tg #pwr", GPIOD_OUT_LOW);
+	if (IS_ERR(data->gpiod_tg))
+		return PTR_ERR(data->gpiod_tg);
 
 	mdelay(60);