Commit 900bca34 authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight

* 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight:
  backlight: Add driver for Tabletkiosk Sahara TouchIT-213 Tablet PC
  backlight: da903x: Add backlight driver for DA9030/DA9034
  tosa: add support for bl/lcd driver
  backlight: add support for Sharp SL-6000 LCD and backlight drivers
parents 2fca5ccf d03ebb12
...@@ -193,4 +193,7 @@ ...@@ -193,4 +193,7 @@
#define TOSA_KEY_MAIL KEY_MAIL #define TOSA_KEY_MAIL KEY_MAIL
#endif #endif
struct spi_device;
extern int tosa_bl_enable(struct spi_device *spi, int enable);
#endif /* _ASM_ARCH_TOSA_H_ */ #endif /* _ASM_ARCH_TOSA_H_ */
...@@ -31,6 +31,7 @@ ...@@ -31,6 +31,7 @@
#include <linux/gpio.h> #include <linux/gpio.h>
#include <linux/pda_power.h> #include <linux/pda_power.h>
#include <linux/rfkill.h> #include <linux/rfkill.h>
#include <linux/spi/spi.h>
#include <asm/setup.h> #include <asm/setup.h>
#include <asm/mach-types.h> #include <asm/mach-types.h>
...@@ -42,6 +43,7 @@ ...@@ -42,6 +43,7 @@
#include <mach/mmc.h> #include <mach/mmc.h>
#include <mach/udc.h> #include <mach/udc.h>
#include <mach/tosa_bt.h> #include <mach/tosa_bt.h>
#include <mach/pxa2xx_spi.h>
#include <asm/mach/arch.h> #include <asm/mach/arch.h>
#include <mach/tosa.h> #include <mach/tosa.h>
...@@ -612,7 +614,7 @@ static int tosa_tc6393xb_enable(struct platform_device *dev) ...@@ -612,7 +614,7 @@ static int tosa_tc6393xb_enable(struct platform_device *dev)
rc = gpio_request(TOSA_GPIO_TC6393XB_SUSPEND, "tc6393xb #suspend"); rc = gpio_request(TOSA_GPIO_TC6393XB_SUSPEND, "tc6393xb #suspend");
if (rc) if (rc)
goto err_req_suspend; goto err_req_suspend;
rc = gpio_request(TOSA_GPIO_TC6393XB_L3V_ON, "l3v"); rc = gpio_request(TOSA_GPIO_TC6393XB_L3V_ON, "tc6393xb l3v");
if (rc) if (rc)
goto err_req_l3v; goto err_req_l3v;
rc = gpio_direction_output(TOSA_GPIO_TC6393XB_L3V_ON, 0); rc = gpio_direction_output(TOSA_GPIO_TC6393XB_L3V_ON, 0);
...@@ -772,6 +774,20 @@ static struct platform_device tosa_bt_device = { ...@@ -772,6 +774,20 @@ static struct platform_device tosa_bt_device = {
.dev.platform_data = &tosa_bt_data, .dev.platform_data = &tosa_bt_data,
}; };
static struct pxa2xx_spi_master pxa_ssp_master_info = {
.num_chipselect = 1,
};
static struct spi_board_info spi_board_info[] __initdata = {
{
.modalias = "tosa-lcd",
// .platform_data
.max_speed_hz = 28750,
.bus_num = 2,
.chip_select = 0,
.mode = SPI_MODE_0,
},
};
static struct platform_device *devices[] __initdata = { static struct platform_device *devices[] __initdata = {
&tosascoop_device, &tosascoop_device,
...@@ -826,6 +842,9 @@ static void __init tosa_init(void) ...@@ -826,6 +842,9 @@ static void __init tosa_init(void)
pxa_set_i2c_info(NULL); pxa_set_i2c_info(NULL);
platform_scoop_config = &tosa_pcmcia_config; platform_scoop_config = &tosa_pcmcia_config;
pxa2xx_set_spi_info(2, &pxa_ssp_master_info);
spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
clk_add_alias("CLK_CK3P6MI", &tc6393xb_device.dev, "GPIO11_CLK", NULL); clk_add_alias("CLK_CK3P6MI", &tc6393xb_device.dev, "GPIO11_CLK", NULL);
platform_add_devices(devices, ARRAY_SIZE(devices)); platform_add_devices(devices, ARRAY_SIZE(devices));
......
...@@ -75,6 +75,15 @@ config LCD_PLATFORM ...@@ -75,6 +75,15 @@ config LCD_PLATFORM
This driver provides a platform-device registered LCD power This driver provides a platform-device registered LCD power
control interface. control interface.
config LCD_TOSA
tristate "Sharp SL-6000 LCD Driver"
depends on LCD_CLASS_DEVICE && SPI
depends on MACH_TOSA
default n
help
If you have an Sharp SL-6000 Zaurus say Y to enable a driver
for its LCD.
# #
# Backlight # Backlight
# #
...@@ -171,6 +180,13 @@ config BACKLIGHT_PWM ...@@ -171,6 +180,13 @@ config BACKLIGHT_PWM
If you have a LCD backlight adjustable by PWM, say Y to enable If you have a LCD backlight adjustable by PWM, say Y to enable
this driver. this driver.
config BACKLIGHT_DA903X
tristate "Backlight Driver for DA9030/DA9034 using WLED"
depends on BACKLIGHT_CLASS_DEVICE && PMIC_DA903X
help
If you have a LCD backlight connected to the WLED output of DA9030
or DA9034 WLED output, say Y here to enable this driver.
config BACKLIGHT_MBP_NVIDIA config BACKLIGHT_MBP_NVIDIA
tristate "MacBook Pro Nvidia Backlight Driver" tristate "MacBook Pro Nvidia Backlight Driver"
depends on BACKLIGHT_CLASS_DEVICE && X86 depends on BACKLIGHT_CLASS_DEVICE && X86
...@@ -179,3 +195,19 @@ config BACKLIGHT_MBP_NVIDIA ...@@ -179,3 +195,19 @@ config BACKLIGHT_MBP_NVIDIA
If you have an Apple Macbook Pro with Nvidia graphics hardware say Y If you have an Apple Macbook Pro with Nvidia graphics hardware say Y
to enable a driver for its backlight to enable a driver for its backlight
config BACKLIGHT_TOSA
tristate "Sharp SL-6000 Backlight Driver"
depends on BACKLIGHT_CLASS_DEVICE && I2C
depends on MACH_TOSA && LCD_TOSA
default n
help
If you have an Sharp SL-6000 Zaurus say Y to enable a driver
for its backlight
config BACKLIGHT_SAHARA
tristate "Tabletkiosk Sahara Touch-iT Backlight Driver"
depends on BACKLIGHT_CLASS_DEVICE && X86
default n
help
If you have a Tabletkiosk Sahara Touch-iT, say y to enable the
backlight driver.
...@@ -7,6 +7,7 @@ obj-$(CONFIG_LCD_ILI9320) += ili9320.o ...@@ -7,6 +7,7 @@ obj-$(CONFIG_LCD_ILI9320) += ili9320.o
obj-$(CONFIG_LCD_PLATFORM) += platform_lcd.o obj-$(CONFIG_LCD_PLATFORM) += platform_lcd.o
obj-$(CONFIG_LCD_VGG2432A4) += vgg2432a4.o obj-$(CONFIG_LCD_VGG2432A4) += vgg2432a4.o
obj-$(CONFIG_LCD_TDO24M) += tdo24m.o obj-$(CONFIG_LCD_TDO24M) += tdo24m.o
obj-$(CONFIG_LCD_TOSA) += tosa_lcd.o
obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o
obj-$(CONFIG_BACKLIGHT_ATMEL_PWM) += atmel-pwm-bl.o obj-$(CONFIG_BACKLIGHT_ATMEL_PWM) += atmel-pwm-bl.o
...@@ -17,5 +18,8 @@ obj-$(CONFIG_BACKLIGHT_OMAP1) += omap1_bl.o ...@@ -17,5 +18,8 @@ obj-$(CONFIG_BACKLIGHT_OMAP1) += omap1_bl.o
obj-$(CONFIG_BACKLIGHT_PROGEAR) += progear_bl.o obj-$(CONFIG_BACKLIGHT_PROGEAR) += progear_bl.o
obj-$(CONFIG_BACKLIGHT_CARILLO_RANCH) += cr_bllcd.o obj-$(CONFIG_BACKLIGHT_CARILLO_RANCH) += cr_bllcd.o
obj-$(CONFIG_BACKLIGHT_PWM) += pwm_bl.o obj-$(CONFIG_BACKLIGHT_PWM) += pwm_bl.o
obj-$(CONFIG_BACKLIGHT_DA903X) += da903x.o
obj-$(CONFIG_BACKLIGHT_MBP_NVIDIA) += mbp_nvidia_bl.o obj-$(CONFIG_BACKLIGHT_MBP_NVIDIA) += mbp_nvidia_bl.o
obj-$(CONFIG_BACKLIGHT_TOSA) += tosa_bl.o
obj-$(CONFIG_BACKLIGHT_SAHARA) += kb3886_bl.o
/*
* Backlight driver for Dialog Semiconductor DA9030/DA9034
*
* Copyright (C) 2008 Compulab, Ltd.
* Mike Rapoport <mike@compulab.co.il>
*
* Copyright (C) 2006-2008 Marvell International Ltd.
* Eric Miao <eric.miao@marvell.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/fb.h>
#include <linux/backlight.h>
#include <linux/mfd/da903x.h>
#define DA9030_WLED_CONTROL 0x25
#define DA9030_WLED_CP_EN (1 << 6)
#define DA9030_WLED_TRIM(x) ((x) & 0x7)
#define DA9034_WLED_CONTROL1 0x3C
#define DA9034_WLED_CONTROL2 0x3D
#define DA9034_WLED_BOOST_EN (1 << 5)
#define DA9030_MAX_BRIGHTNESS 7
#define DA9034_MAX_BRIGHTNESS 0x7f
struct da903x_backlight_data {
struct device *da903x_dev;
int id;
int current_brightness;
};
static int da903x_backlight_set(struct backlight_device *bl, int brightness)
{
struct da903x_backlight_data *data = bl_get_data(bl);
struct device *dev = data->da903x_dev;
uint8_t val;
int ret = 0;
switch (data->id) {
case DA9034_ID_WLED:
ret = da903x_update(dev, DA9034_WLED_CONTROL1,
brightness, 0x7f);
if (ret)
return ret;
if (data->current_brightness && brightness == 0)
ret = da903x_clr_bits(dev,
DA9034_WLED_CONTROL2,
DA9034_WLED_BOOST_EN);
if (data->current_brightness == 0 && brightness)
ret = da903x_set_bits(dev,
DA9034_WLED_CONTROL2,
DA9034_WLED_BOOST_EN);
break;
case DA9030_ID_WLED:
val = DA9030_WLED_TRIM(brightness);
val |= brightness ? DA9030_WLED_CP_EN : 0;
ret = da903x_write(dev, DA9030_WLED_CONTROL, val);
break;
}
if (ret)
return ret;
data->current_brightness = brightness;
return 0;
}
static int da903x_backlight_update_status(struct backlight_device *bl)
{
int brightness = bl->props.brightness;
if (bl->props.power != FB_BLANK_UNBLANK)
brightness = 0;
if (bl->props.fb_blank != FB_BLANK_UNBLANK)
brightness = 0;
return da903x_backlight_set(bl, brightness);
}
static int da903x_backlight_get_brightness(struct backlight_device *bl)
{
struct da903x_backlight_data *data = bl_get_data(bl);
return data->current_brightness;
}
static struct backlight_ops da903x_backlight_ops = {
.update_status = da903x_backlight_update_status,
.get_brightness = da903x_backlight_get_brightness,
};
static int da903x_backlight_probe(struct platform_device *pdev)
{
struct da903x_backlight_data *data;
struct backlight_device *bl;
int max_brightness;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (data == NULL)
return -ENOMEM;
switch (pdev->id) {
case DA9030_ID_WLED:
max_brightness = DA9030_MAX_BRIGHTNESS;
break;
case DA9034_ID_WLED:
max_brightness = DA9034_MAX_BRIGHTNESS;
break;
default:
dev_err(&pdev->dev, "invalid backlight device ID(%d)\n",
pdev->id);
return -EINVAL;
}
data->id = pdev->id;
data->da903x_dev = pdev->dev.parent;
data->current_brightness = 0;
bl = backlight_device_register(pdev->name, data->da903x_dev,
data, &da903x_backlight_ops);
if (IS_ERR(bl)) {
dev_err(&pdev->dev, "failed to register backlight\n");
return PTR_ERR(bl);
}
bl->props.max_brightness = max_brightness;
bl->props.brightness = max_brightness;
platform_set_drvdata(pdev, bl);
backlight_update_status(bl);
return 0;
}
static int da903x_backlight_remove(struct platform_device *pdev)
{
struct backlight_device *bl = platform_get_drvdata(pdev);
struct da903x_backlight_data *data = bl_get_data(bl);
backlight_device_unregister(bl);
kfree(data);
return 0;
}
#ifdef CONFIG_PM
static int da903x_backlight_suspend(struct platform_device *pdev,
pm_message_t state)
{
struct backlight_device *bl = platform_get_drvdata(pdev);
return da903x_backlight_set(bl, 0);
}
static int da903x_backlight_resume(struct platform_device *pdev)
{
struct backlight_device *bl = platform_get_drvdata(pdev);
backlight_update_status(bl);
return 0;
}
#else
#define da903x_backlight_suspend NULL
#define da903x_backlight_resume NULL
#endif
static struct platform_driver da903x_backlight_driver = {
.driver = {
.name = "da903x-backlight",
.owner = THIS_MODULE,
},
.probe = da903x_backlight_probe,
.remove = da903x_backlight_remove,
.suspend = da903x_backlight_suspend,
.resume = da903x_backlight_resume,
};
static int __init da903x_backlight_init(void)
{
return platform_driver_register(&da903x_backlight_driver);
}
module_init(da903x_backlight_init);
static void __exit da903x_backlight_exit(void)
{
platform_driver_unregister(&da903x_backlight_driver);
}
module_exit(da903x_backlight_exit);
MODULE_DESCRIPTION("Backlight Driver for Dialog Semiconductor DA9030/DA9034");
MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>"
"Mike Rapoport <mike@compulab.co.il>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:da903x-backlight");
/*
* Backlight Driver for the KB3886 Backlight
*
* Copyright (c) 2007-2008 Claudio Nieder
*
* Based on corgi_bl.c by Richard Purdie and kb3886 driver by Robert Woerle
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/mutex.h>
#include <linux/fb.h>
#include <linux/backlight.h>
#include <linux/delay.h>
#include <linux/dmi.h>
#define KB3886_PARENT 0x64
#define KB3886_IO 0x60
#define KB3886_ADC_DAC_PWM 0xC4
#define KB3886_PWM0_WRITE 0x81
#define KB3886_PWM0_READ 0x41
static DEFINE_MUTEX(bl_mutex);
static void kb3886_bl_set_intensity(int intensity)
{
mutex_lock(&bl_mutex);
intensity = intensity&0xff;
outb(KB3886_ADC_DAC_PWM, KB3886_PARENT);
msleep(10);
outb(KB3886_PWM0_WRITE, KB3886_IO);
msleep(10);
outb(intensity, KB3886_IO);
mutex_unlock(&bl_mutex);
}
struct kb3886bl_machinfo {
int max_intensity;
int default_intensity;
int limit_mask;
void (*set_bl_intensity)(int intensity);
};
static struct kb3886bl_machinfo kb3886_bl_machinfo = {
.max_intensity = 0xff,
.default_intensity = 0xa0,
.limit_mask = 0x7f,
.set_bl_intensity = kb3886_bl_set_intensity,
};
static struct platform_device kb3886bl_device = {
.name = "kb3886-bl",
.dev = {
.platform_data = &kb3886_bl_machinfo,
},
.id = -1,
};
static struct platform_device *devices[] __initdata = {
&kb3886bl_device,
};
/*
* Back to driver
*/
static int kb3886bl_intensity;
static struct backlight_device *kb3886_backlight_device;
static struct kb3886bl_machinfo *bl_machinfo;
static unsigned long kb3886bl_flags;
#define KB3886BL_SUSPENDED 0x01
static struct dmi_system_id __initdata kb3886bl_device_table[] = {
{
.ident = "Sahara Touch-iT",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "SDV"),
DMI_MATCH(DMI_PRODUCT_NAME, "iTouch T201"),
},
},
{ }
};
static int kb3886bl_send_intensity(struct backlight_device *bd)
{
int intensity = bd->props.brightness;
if (bd->props.power != FB_BLANK_UNBLANK)
intensity = 0;
if (bd->props.fb_blank != FB_BLANK_UNBLANK)
intensity = 0;
if (kb3886bl_flags & KB3886BL_SUSPENDED)
intensity = 0;
bl_machinfo->set_bl_intensity(intensity);
kb3886bl_intensity = intensity;
return 0;
}
#ifdef CONFIG_PM
static int kb3886bl_suspend(struct platform_device *pdev, pm_message_t state)
{
struct backlight_device *bd = platform_get_drvdata(pdev);
kb3886bl_flags |= KB3886BL_SUSPENDED;
backlight_update_status(bd);
return 0;
}
static int kb3886bl_resume(struct platform_device *pdev)
{
struct backlight_device *bd = platform_get_drvdata(pdev);
kb3886bl_flags &= ~KB3886BL_SUSPENDED;
backlight_update_status(bd);
return 0;
}
#else
#define kb3886bl_suspend NULL
#define kb3886bl_resume NULL
#endif
static int kb3886bl_get_intensity(struct backlight_device *bd)
{
return kb3886bl_intensity;
}
static struct backlight_ops kb3886bl_ops = {
.get_brightness = kb3886bl_get_intensity,
.update_status = kb3886bl_send_intensity,
};
static int kb3886bl_probe(struct platform_device *pdev)
{
struct kb3886bl_machinfo *machinfo = pdev->dev.platform_data;
bl_machinfo = machinfo;
if (!machinfo->limit_mask)
machinfo->limit_mask = -1;
kb3886_backlight_device = backlight_device_register("kb3886-bl",
&pdev->dev, NULL, &kb3886bl_ops);
if (IS_ERR(kb3886_backlight_device))
return PTR_ERR(kb3886_backlight_device);
platform_set_drvdata(pdev, kb3886_backlight_device);
kb3886_backlight_device->props.max_brightness = machinfo->max_intensity;
kb3886_backlight_device->props.power = FB_BLANK_UNBLANK;
kb3886_backlight_device->props.brightness = machinfo->default_intensity;
backlight_update_status(kb3886_backlight_device);
return 0;
}
static int kb3886bl_remove(struct platform_device *pdev)
{
struct backlight_device *bd = platform_get_drvdata(pdev);
backlight_device_unregister(bd);
return 0;
}
static struct platform_driver kb3886bl_driver = {
.probe = kb3886bl_probe,
.remove = kb3886bl_remove,
.suspend = kb3886bl_suspend,
.resume = kb3886bl_resume,
.driver = {
.name = "kb3886-bl",
},
};
static int __init kb3886_init(void)
{
if (!dmi_check_system(kb3886bl_device_table))
return -ENODEV;
platform_add_devices(devices, ARRAY_SIZE(devices));
return platform_driver_register(&kb3886bl_driver);
}
static void __exit kb3886_exit(void)
{
platform_driver_unregister(&kb3886bl_driver);
}
module_init(kb3886_init);
module_exit(kb3886_exit);
MODULE_AUTHOR("Claudio Nieder <private@claudio.ch>");
MODULE_DESCRIPTION("Tabletkiosk Sahara Touch-iT Backlight Driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("dmi:*:svnSDV:pniTouchT201:*");
/*
* LCD / Backlight control code for Sharp SL-6000x (tosa)
*
* Copyright (c) 2005 Dirk Opfer
* Copyright (c) 2007,2008 Dmitry Baryshkov
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/spi/spi.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/fb.h>
#include <linux/backlight.h>
#include <asm/mach/sharpsl_param.h>
#include <mach/tosa.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;
int comadj;
};
static void tosa_bl_set_backlight(struct tosa_bl_data *data, int brightness)
{
struct spi_device *spi = data->i2c->dev.platform_data;
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 */
gpio_set_value(TOSA_GPIO_BL_C20MA, 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 = dev_get_drvdata(&dev->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 struct backlight_ops bl_ops = {
.get_brightness = tosa_bl_get_brightness,
.update_status = tosa_bl_update_status,
};
static int __devinit tosa_bl_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct tosa_bl_data *data = kzalloc(sizeof(struct tosa_bl_data), GFP_KERNEL);
int ret = 0;
if (!data)
return -ENOMEM;
data->comadj = sharpsl_param.comadj == -1 ? COMADJ_DEFAULT : sharpsl_param.comadj;
ret = gpio_request(TOSA_GPIO_BL_C20MA, "backlight");
if (ret) {
dev_dbg(&data->bl->dev, "Unable to request gpio!\n");
goto err_gpio_bl;
}
ret = gpio_direction_output(TOSA_GPIO_BL_C20MA, 0);
if (ret)
goto err_gpio_dir;
i2c_set_clientdata(client, data);
data->i2c = client;
data->bl = backlight_device_register("tosa-bl", &client->dev,
data, &bl_ops);
if (IS_ERR(data->bl)) {
ret = PTR_ERR(data->bl);
goto err_reg;
}
data->bl->props.brightness = 69;
data->bl->props.max_brightness = 512 - 1;
data->bl->props.power = FB_BLANK_UNBLANK;
backlight_update_status(data->bl);
return 0;
err_reg:
data->bl = NULL;
i2c_set_clientdata(client, NULL);
err_gpio_dir:
gpio_free(TOSA_GPIO_BL_C20MA);
err_gpio_bl:
kfree(data);
return ret;
}
static int __devexit tosa_bl_remove(struct i2c_client *client)
{
struct tosa_bl_data *data = i2c_get_clientdata(client);
backlight_device_unregister(data->bl);
data->bl = NULL;
i2c_set_clientdata(client, NULL);
gpio_free(TOSA_GPIO_BL_C20MA);
kfree(data);
return 0;
}
#ifdef CONFIG_PM
static int tosa_bl_suspend(struct i2c_client *client, pm_message_t pm)
{
struct tosa_bl_data *data = i2c_get_clientdata(client);
tosa_bl_set_backlight(data, 0);
return 0;
}
static int tosa_bl_resume(struct i2c_client *client)
{
struct tosa_bl_data *data = i2c_get_clientdata(client);
backlight_update_status(data->bl);
return 0;
}
#else
#define tosa_bl_suspend NULL
#define tosa_bl_resume NULL
#endif
static const struct i2c_device_id tosa_bl_id[] = {
{ "tosa-bl", 0 },
{ },
};
static struct i2c_driver tosa_bl_driver = {
.driver = {
.name = "tosa-bl",
.owner = THIS_MODULE,
},
.probe = tosa_bl_probe,
.remove = __devexit_p(tosa_bl_remove),
.suspend = tosa_bl_suspend,
.resume = tosa_bl_resume,
.id_table = tosa_bl_id,
};
static int __init tosa_bl_init(void)
{
return i2c_add_driver(&tosa_bl_driver);
}
static void __exit tosa_bl_exit(void)
{
i2c_del_driver(&tosa_bl_driver);
}
module_init(tosa_bl_init);
module_exit(tosa_bl_exit);
MODULE_AUTHOR("Dmitry Baryshkov");
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("LCD/Backlight control for Sharp SL-6000 PDA");
/*
* LCD / Backlight control code for Sharp SL-6000x (tosa)
*
* Copyright (c) 2005 Dirk Opfer
* Copyright (c) 2007,2008 Dmitry Baryshkov
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/spi/spi.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/lcd.h>
#include <linux/fb.h>
#include <asm/mach/sharpsl_param.h>
#include <mach/tosa.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
#define DAC_BASE 0x4e
struct tosa_lcd_data {
struct spi_device *spi;
struct lcd_device *lcd;
struct i2c_client *i2c;
int lcd_power;
};
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 = 1,
.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 */
gpio_set_value(TOSA_GPIO_TG_ON, 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;
const int value = TG_REG0_COLOR | TG_REG0_UD | TG_REG0_LR;
tosa_tg_send(spi, TG_PNLCTL, value | TG_REG0_VQV); /* this depends on mode */
/* 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 (!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 = {
.type = "tosa-bl",
.addr = DAC_BASE,
.platform_data = data->spi,
};
data->i2c = i2c_new_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 */
gpio_set_value(TOSA_GPIO_TG_ON, 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 struct lcd_ops tosa_lcd_ops = {
.set_power = tosa_lcd_set_power,
.get_power = tosa_lcd_get_power,
};
static int __devinit tosa_lcd_probe(struct spi_device *spi)
{
int ret;
struct tosa_lcd_data *data;
data = kzalloc(sizeof(struct tosa_lcd_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
/*
* bits_per_word cannot be configured in platform data
*/
spi->bits_per_word = 8;
ret = spi_setup(spi);
if (ret < 0)
goto err_spi;
data->spi = spi;
dev_set_drvdata(&spi->dev, data);
ret = gpio_request(TOSA_GPIO_TG_ON, "tg #pwr");
if (ret < 0)
goto err_gpio_tg;
mdelay(60);
ret = gpio_direction_output(TOSA_GPIO_TG_ON, 0);
if (ret < 0)
goto err_gpio_dir;
mdelay(60);
tosa_lcd_tg_init(data);
tosa_lcd_tg_on(data);
data->lcd = lcd_device_register("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);
err_gpio_dir:
gpio_free(TOSA_GPIO_TG_ON);
err_gpio_tg:
dev_set_drvdata(&spi->dev, NULL);
err_spi:
kfree(data);
return ret;
}
static int __devexit tosa_lcd_remove(struct spi_device *spi)
{
struct tosa_lcd_data *data = dev_get_drvdata(&spi->dev);
lcd_device_unregister(data->lcd);
if (data->i2c)
i2c_unregister_device(data->i2c);
tosa_lcd_tg_off(data);
gpio_free(TOSA_GPIO_TG_ON);
dev_set_drvdata(&spi->dev, NULL);
kfree(data);
return 0;
}
#ifdef CONFIG_PM
static int tosa_lcd_suspend(struct spi_device *spi, pm_message_t state)
{
struct tosa_lcd_data *data = dev_get_drvdata(&spi->dev);
tosa_lcd_tg_off(data);
return 0;
}
static int tosa_lcd_resume(struct spi_device *spi)
{
struct tosa_lcd_data *data = dev_get_drvdata(&spi->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;
}
#else
#define tosa_lcd_suspend NULL
#define tosa_lcd_reume NULL
#endif
static struct spi_driver tosa_lcd_driver = {
.driver = {
.name = "tosa-lcd",
.owner = THIS_MODULE,
},
.probe = tosa_lcd_probe,
.remove = __devexit_p(tosa_lcd_remove),
.suspend = tosa_lcd_suspend,
.resume = tosa_lcd_resume,
};
static int __init tosa_lcd_init(void)
{
return spi_register_driver(&tosa_lcd_driver);
}
static void __exit tosa_lcd_exit(void)
{
spi_unregister_driver(&tosa_lcd_driver);
}
module_init(tosa_lcd_init);
module_exit(tosa_lcd_exit);
MODULE_AUTHOR("Dmitry Baryshkov");
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("LCD/Backlight control for Sharp SL-6000 PDA");
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