backlight: Remove pxa tosa support

The PXA tosa machine was removed, so this backlight driver is no
longer needed.

Signed-off-by: Arnd Bergmann <[e-mail]>
Reviewed-by: Daniel Thompson <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/video/backlight/Kconfig

···
 	  This driver provides a platform-device registered LCD power
 	  control interface.
 
-config LCD_TOSA
-	tristate "Sharp SL-6000 LCD Driver"
-	depends on I2C && SPI && MACH_TOSA
-	help
-	  If you have an Sharp SL-6000 Zaurus say Y to enable a driver
-	  for its LCD.
-
 config LCD_HP700
 	tristate "HP Jornada 700 series LCD Driver"
 	depends on SA1100_JORNADA720_SSP && !PREEMPTION
···
 	help
 	  If you have an Intel-based Apple say Y to enable a driver for its
 	  backlight.
-
-config BACKLIGHT_TOSA
-	tristate "Sharp SL-6000 Backlight Driver"
-	depends on I2C && MACH_TOSA && LCD_TOSA
-	help
-	  If you have an Sharp SL-6000 Zaurus say Y to enable a driver
-	  for its backlight
 
 config BACKLIGHT_QCOM_WLED
 	tristate "Qualcomm PMIC WLED Driver"

drivers/video/backlight/Makefile

···
 obj-$(CONFIG_LCD_OTM3225A)		+= otm3225a.o
 obj-$(CONFIG_LCD_PLATFORM)		+= platform_lcd.o
 obj-$(CONFIG_LCD_TDO24M)		+= tdo24m.o
-obj-$(CONFIG_LCD_TOSA)			+= tosa_lcd.o
 obj-$(CONFIG_LCD_VGG2432A4)		+= vgg2432a4.o
 
 obj-$(CONFIG_BACKLIGHT_88PM860X)	+= 88pm860x_bl.o
···
 obj-$(CONFIG_BACKLIGHT_RT4831)		+= rt4831-backlight.o
 obj-$(CONFIG_BACKLIGHT_SAHARA)		+= kb3886_bl.o
 obj-$(CONFIG_BACKLIGHT_SKY81452)	+= sky81452-backlight.o
-obj-$(CONFIG_BACKLIGHT_TOSA)		+= tosa_bl.o
 obj-$(CONFIG_BACKLIGHT_TPS65217)	+= tps65217_bl.o
 obj-$(CONFIG_BACKLIGHT_WM831X)		+= wm831x_bl.o
 obj-$(CONFIG_BACKLIGHT_ARCXCNN) 	+= arcxcnn_bl.o

drivers/video/backlight/tosa_bl.c

···
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- *  LCD / Backlight control code for Sharp SL-6000x (tosa)
- *
- *  Copyright (c) 2005		Dirk Opfer
- *  Copyright (c) 2007,2008	Dmitry Baryshkov
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/spi/spi.h>
-#include <linux/i2c.h>
-#include <linux/gpio/consumer.h>
-#include <linux/fb.h>
-#include <linux/backlight.h>
-#include <linux/slab.h>
-
-#include <asm/mach/sharpsl_param.h>
-
-#include "tosa_bl.h"
-
-#define COMADJ_DEFAULT	97
-
-#define DAC_CH1		0
-#define DAC_CH2		1
-
-struct tosa_bl_data {
-	struct i2c_client *i2c;
-	struct backlight_device *bl;
-	struct gpio_desc *gpio;
-
-	int comadj;
-};
-
-static void tosa_bl_set_backlight(struct tosa_bl_data *data, int brightness)
-{
-	struct spi_device *spi = dev_get_platdata(&data->i2c->dev);
-
-	i2c_smbus_write_byte_data(data->i2c, DAC_CH1, data->comadj);
-
-	/* SetBacklightDuty */
-	i2c_smbus_write_byte_data(data->i2c, DAC_CH2, (u8)(brightness & 0xff));
-
-	/* SetBacklightVR */
-	gpiod_set_value(data->gpio, brightness & 0x100);
-
-	tosa_bl_enable(spi, brightness);
-}
-
-static int tosa_bl_update_status(struct backlight_device *dev)
-{
-	struct backlight_properties *props = &dev->props;
-	struct tosa_bl_data *data = bl_get_data(dev);
-	int power = max(props->power, props->fb_blank);
-	int brightness = props->brightness;
-
-	if (power)
-		brightness = 0;
-
-	tosa_bl_set_backlight(data, brightness);
-
-	return 0;
-}
-
-static int tosa_bl_get_brightness(struct backlight_device *dev)
-{
-	struct backlight_properties *props = &dev->props;
-
-	return props->brightness;
-}
-
-static const struct backlight_ops bl_ops = {
-	.get_brightness		= tosa_bl_get_brightness,
-	.update_status		= tosa_bl_update_status,
-};
-
-static int tosa_bl_probe(struct i2c_client *client)
-{
-	struct backlight_properties props;
-	struct tosa_bl_data *data;
-	int ret = 0;
-
-	data = devm_kzalloc(&client->dev, sizeof(struct tosa_bl_data),
-				GFP_KERNEL);
-	if (!data)
-		return -ENOMEM;
-
-	data->comadj = sharpsl_param.comadj == -1 ? COMADJ_DEFAULT : sharpsl_param.comadj;
-	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;
-	}
-
-	i2c_set_clientdata(client, data);
-	data->i2c = client;
-
-	memset(&props, 0, sizeof(struct backlight_properties));
-	props.type = BACKLIGHT_RAW;
-	props.max_brightness = 512 - 1;
-	data->bl = devm_backlight_device_register(&client->dev, "tosa-bl",
-						&client->dev, data, &bl_ops,
-						&props);
-	if (IS_ERR(data->bl)) {
-		ret = PTR_ERR(data->bl);
-		goto err_reg;
-	}
-
-	data->bl->props.brightness = 69;
-	data->bl->props.power = FB_BLANK_UNBLANK;
-
-	backlight_update_status(data->bl);
-
-	return 0;
-
-err_reg:
-	data->bl = NULL;
-	return ret;
-}
-
-static void tosa_bl_remove(struct i2c_client *client)
-{
-	struct tosa_bl_data *data = i2c_get_clientdata(client);
-
-	data->bl = NULL;
-}
-
-#ifdef CONFIG_PM_SLEEP
-static int tosa_bl_suspend(struct device *dev)
-{
-	struct tosa_bl_data *data = dev_get_drvdata(dev);
-
-	tosa_bl_set_backlight(data, 0);
-
-	return 0;
-}
-
-static int tosa_bl_resume(struct device *dev)
-{
-	struct tosa_bl_data *data = dev_get_drvdata(dev);
-
-	backlight_update_status(data->bl);
-	return 0;
-}
-#endif
-
-static SIMPLE_DEV_PM_OPS(tosa_bl_pm_ops, tosa_bl_suspend, tosa_bl_resume);
-
-static const struct i2c_device_id tosa_bl_id[] = {
-	{ "tosa-bl", 0 },
-	{ },
-};
-MODULE_DEVICE_TABLE(i2c, tosa_bl_id);
-
-static struct i2c_driver tosa_bl_driver = {
-	.driver = {
-		.name		= "tosa-bl",
-		.pm		= &tosa_bl_pm_ops,
-	},
-	.probe_new	= tosa_bl_probe,
-	.remove		= tosa_bl_remove,
-	.id_table	= tosa_bl_id,
-};
-
-module_i2c_driver(tosa_bl_driver);
-
-MODULE_AUTHOR("Dmitry Baryshkov");
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("LCD/Backlight control for Sharp SL-6000 PDA");
-

drivers/video/backlight/tosa_bl.h

···
-/* 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

drivers/video/backlight/tosa_lcd.c

···
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- *  LCD / Backlight control code for Sharp SL-6000x (tosa)
- *
- *  Copyright (c) 2005		Dirk Opfer
- *  Copyright (c) 2007,2008	Dmitry Baryshkov
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/spi/spi.h>
-#include <linux/i2c.h>
-#include <linux/slab.h>
-#include <linux/gpio/consumer.h>
-#include <linux/delay.h>
-#include <linux/lcd.h>
-#include <linux/fb.h>
-
-#include <asm/mach/sharpsl_param.h>
-
-#include "tosa_bl.h"
-
-#define POWER_IS_ON(pwr)	((pwr) <= FB_BLANK_NORMAL)
-
-#define TG_REG0_VQV	0x0001
-#define TG_REG0_COLOR	0x0002
-#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;
-};
-
-static int tosa_tg_send(struct spi_device *spi, int adrs, uint8_t data)
-{
-	u8 buf[1];
-	struct spi_message msg;
-	struct spi_transfer xfer = {
-		.len		= 1,
-		.cs_change	= 0,
-		.tx_buf		= buf,
-	};
-
-	buf[0] = ((adrs & 0x07) << 5) | (data & 0x1f);
-	spi_message_init(&msg);
-	spi_message_add_tail(&xfer, &msg);
-
-	return spi_sync(spi, &msg);
-}
-
-int tosa_bl_enable(struct spi_device *spi, int enable)
-{
-	/* bl_enable GP04=1 otherwise GP04=0*/
-	return tosa_tg_send(spi, TG_GPODR2, enable ? 0x01 : 0x00);
-}
-EXPORT_SYMBOL(tosa_bl_enable);
-
-static void tosa_lcd_tg_init(struct tosa_lcd_data *data)
-{
-	/* TG on */
-	gpiod_set_value(data->gpiod_tg, 0);
-
-	mdelay(60);
-
-	/* delayed 0clk TCTL signal for VGA */
-	tosa_tg_send(data->spi, TG_TPOSCTL, 0x00);
-	/* GPOS0=powercontrol, GPOS1=GPIO, GPOS2=TCTL */
-	tosa_tg_send(data->spi, TG_GPOSR, 0x02);
-}
-
-static void tosa_lcd_tg_on(struct tosa_lcd_data *data)
-{
-	struct spi_device *spi = data->spi;
-	int value = TG_REG0_COLOR | TG_REG0_UD | TG_REG0_LR;
-
-	if (data->is_vga)
-		value |= TG_REG0_VQV;
-
-	tosa_tg_send(spi, TG_PNLCTL, value);
-
-	/* TG LCD pannel power up */
-	tosa_tg_send(spi, TG_PINICTL, 0x4);
-	mdelay(50);
-
-	/* TG LCD GVSS */
-	tosa_tg_send(spi, TG_PINICTL, 0x0);
-
-	if (IS_ERR_OR_NULL(data->i2c)) {
-		/*
-		 * after the pannel is powered up the first time,
-		 * we can access the i2c bus so probe for the DAC
-		 */
-		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,
-		};
-		data->i2c = i2c_new_client_device(adap, &info);
-	}
-}
-
-static void tosa_lcd_tg_off(struct tosa_lcd_data *data)
-{
-	struct spi_device *spi = data->spi;
-
-	/* TG LCD VHSA off */
-	tosa_tg_send(spi, TG_PINICTL, 0x4);
-	mdelay(50);
-
-	/* TG LCD signal off */
-	tosa_tg_send(spi, TG_PINICTL, 0x6);
-	mdelay(50);
-
-	/* TG Off */
-	gpiod_set_value(data->gpiod_tg, 1);
-	mdelay(100);
-}
-
-int tosa_lcd_set_power(struct lcd_device *lcd, int power)
-{
-	struct tosa_lcd_data *data = lcd_get_data(lcd);
-
-	if (POWER_IS_ON(power) && !POWER_IS_ON(data->lcd_power))
-		tosa_lcd_tg_on(data);
-
-	if (!POWER_IS_ON(power) && POWER_IS_ON(data->lcd_power))
-		tosa_lcd_tg_off(data);
-
-	data->lcd_power = power;
-	return 0;
-}
-
-static int tosa_lcd_get_power(struct lcd_device *lcd)
-{
-	struct tosa_lcd_data *data = lcd_get_data(lcd);
-
-	return data->lcd_power;
-}
-
-static int tosa_lcd_set_mode(struct lcd_device *lcd, struct fb_videomode *mode)
-{
-	struct tosa_lcd_data *data = lcd_get_data(lcd);
-
-	if (mode->xres == 320 || mode->yres == 320)
-		data->is_vga = false;
-	else
-		data->is_vga = true;
-
-	if (POWER_IS_ON(data->lcd_power))
-		tosa_lcd_tg_on(data);
-
-	return 0;
-}
-
-static struct lcd_ops tosa_lcd_ops = {
-	.set_power = tosa_lcd_set_power,
-	.get_power = tosa_lcd_get_power,
-	.set_mode = tosa_lcd_set_mode,
-};
-
-static int tosa_lcd_probe(struct spi_device *spi)
-{
-	int ret;
-	struct tosa_lcd_data *data;
-
-	data = devm_kzalloc(&spi->dev, sizeof(struct tosa_lcd_data),
-				GFP_KERNEL);
-	if (!data)
-		return -ENOMEM;
-
-	data->is_vga = true; /* default to VGA mode */
-
-	/*
-	 * bits_per_word cannot be configured in platform data
-	 */
-	spi->bits_per_word = 8;
-
-	ret = spi_setup(spi);
-	if (ret < 0)
-		return ret;
-
-	data->spi = spi;
-	spi_set_drvdata(spi, data);
-
-	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);
-
-	tosa_lcd_tg_init(data);
-
-	tosa_lcd_tg_on(data);
-
-	data->lcd = devm_lcd_device_register(&spi->dev, "tosa-lcd", &spi->dev,
-					data, &tosa_lcd_ops);
-
-	if (IS_ERR(data->lcd)) {
-		ret = PTR_ERR(data->lcd);
-		data->lcd = NULL;
-		goto err_register;
-	}
-
-	return 0;
-
-err_register:
-	tosa_lcd_tg_off(data);
-	return ret;
-}
-
-static void tosa_lcd_remove(struct spi_device *spi)
-{
-	struct tosa_lcd_data *data = spi_get_drvdata(spi);
-
-	i2c_unregister_device(data->i2c);
-
-	tosa_lcd_tg_off(data);
-}
-
-#ifdef CONFIG_PM_SLEEP
-static int tosa_lcd_suspend(struct device *dev)
-{
-	struct tosa_lcd_data *data = dev_get_drvdata(dev);
-
-	tosa_lcd_tg_off(data);
-
-	return 0;
-}
-
-static int tosa_lcd_resume(struct device *dev)
-{
-	struct tosa_lcd_data *data = dev_get_drvdata(dev);
-
-	tosa_lcd_tg_init(data);
-	if (POWER_IS_ON(data->lcd_power))
-		tosa_lcd_tg_on(data);
-	else
-		tosa_lcd_tg_off(data);
-
-	return 0;
-}
-#endif
-
-static SIMPLE_DEV_PM_OPS(tosa_lcd_pm_ops, tosa_lcd_suspend, tosa_lcd_resume);
-
-static struct spi_driver tosa_lcd_driver = {
-	.driver = {
-		.name		= "tosa-lcd",
-		.pm		= &tosa_lcd_pm_ops,
-	},
-	.probe		= tosa_lcd_probe,
-	.remove		= tosa_lcd_remove,
-};
-
-module_spi_driver(tosa_lcd_driver);
-
-MODULE_AUTHOR("Dmitry Baryshkov");
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("LCD/Backlight control for Sharp SL-6000 PDA");
-MODULE_ALIAS("spi:tosa-lcd");