backlight: Remove pxa tosa support (744fc2da) · Commits · EulixOS / Software / Kernel

drivers/video/backlight/Kconfig

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Original line number	Diff line number	Diff line
		@@ -90,13 +90,6 @@ config LCD_PLATFORM
		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
		@@ -288,13 +281,6 @@ config BACKLIGHT_APPLE
		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"
		select REGMAP

drivers/video/backlight/Makefile

+0 −2

Original line number	Diff line number	Diff line
		@@ -15,7 +15,6 @@ obj-$(CONFIG_LCD_LTV350QV) += ltv350qv.o
		obj-$(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-$(CONFIG_BACKLIGHT_88PM860X) += 88pm860x_bl.o
		@@ -53,7 +52,6 @@ obj-$(CONFIG_BACKLIGHT_QCOM_WLED) += qcom-wled.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

deleted100644 → 0

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Original line number	Diff line number	Diff line
		// 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

deleted100644 → 0

+0 −8

Original line number	Diff line number	Diff line
		/* 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

deleted100644 → 0

+0 −284

Original line number	Diff line number	Diff line
		// 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");