Contributors: 13
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Andriy Skulysh |
386 |
59.57% |
2 |
10.00% |
| Richard Purdie |
154 |
23.77% |
4 |
20.00% |
| Jingoo Han |
31 |
4.78% |
2 |
10.00% |
| Matthew Garrett |
23 |
3.55% |
2 |
10.00% |
| Akinobu Mita |
16 |
2.47% |
1 |
5.00% |
| Henrique de Moraes Holschuh |
14 |
2.16% |
1 |
5.00% |
| Jonathan Woithe |
6 |
0.93% |
1 |
5.00% |
| Kristoffer Ericson |
6 |
0.93% |
1 |
5.00% |
| Ingo Molnar |
4 |
0.62% |
1 |
5.00% |
| Sam Ravnborg |
3 |
0.46% |
1 |
5.00% |
| Uwe Kleine-König |
2 |
0.31% |
1 |
5.00% |
| Paul Mundt |
2 |
0.31% |
2 |
10.00% |
| Emese Revfy |
1 |
0.15% |
1 |
5.00% |
| Total |
648 |
|
20 |
|
/*
* Backlight Driver for HP Jornada 680
*
* Copyright (c) 2005 Andriy Skulysh
*
* Based on Sharp's Corgi Backlight Driver
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/spinlock.h>
#include <linux/fb.h>
#include <linux/backlight.h>
#include <cpu/dac.h>
#include <mach/hp6xx.h>
#include <asm/hd64461.h>
#define HP680_MAX_INTENSITY 255
#define HP680_DEFAULT_INTENSITY 10
static int hp680bl_suspended;
static int current_intensity;
static DEFINE_SPINLOCK(bl_lock);
static void hp680bl_send_intensity(struct backlight_device *bd)
{
unsigned long flags;
u16 v;
int intensity = backlight_get_brightness(bd);
if (hp680bl_suspended)
intensity = 0;
spin_lock_irqsave(&bl_lock, flags);
if (intensity && current_intensity == 0) {
sh_dac_enable(DAC_LCD_BRIGHTNESS);
v = inw(HD64461_GPBDR);
v &= ~HD64461_GPBDR_LCDOFF;
outw(v, HD64461_GPBDR);
sh_dac_output(255-(u8)intensity, DAC_LCD_BRIGHTNESS);
} else if (intensity == 0 && current_intensity != 0) {
sh_dac_output(255-(u8)intensity, DAC_LCD_BRIGHTNESS);
sh_dac_disable(DAC_LCD_BRIGHTNESS);
v = inw(HD64461_GPBDR);
v |= HD64461_GPBDR_LCDOFF;
outw(v, HD64461_GPBDR);
} else if (intensity) {
sh_dac_output(255-(u8)intensity, DAC_LCD_BRIGHTNESS);
}
spin_unlock_irqrestore(&bl_lock, flags);
current_intensity = intensity;
}
#ifdef CONFIG_PM_SLEEP
static int hp680bl_suspend(struct device *dev)
{
struct backlight_device *bd = dev_get_drvdata(dev);
hp680bl_suspended = 1;
hp680bl_send_intensity(bd);
return 0;
}
static int hp680bl_resume(struct device *dev)
{
struct backlight_device *bd = dev_get_drvdata(dev);
hp680bl_suspended = 0;
hp680bl_send_intensity(bd);
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(hp680bl_pm_ops, hp680bl_suspend, hp680bl_resume);
static int hp680bl_set_intensity(struct backlight_device *bd)
{
hp680bl_send_intensity(bd);
return 0;
}
static int hp680bl_get_intensity(struct backlight_device *bd)
{
return current_intensity;
}
static const struct backlight_ops hp680bl_ops = {
.get_brightness = hp680bl_get_intensity,
.update_status = hp680bl_set_intensity,
};
static int hp680bl_probe(struct platform_device *pdev)
{
struct backlight_properties props;
struct backlight_device *bd;
memset(&props, 0, sizeof(struct backlight_properties));
props.type = BACKLIGHT_RAW;
props.max_brightness = HP680_MAX_INTENSITY;
bd = devm_backlight_device_register(&pdev->dev, "hp680-bl", &pdev->dev,
NULL, &hp680bl_ops, &props);
if (IS_ERR(bd))
return PTR_ERR(bd);
platform_set_drvdata(pdev, bd);
bd->props.brightness = HP680_DEFAULT_INTENSITY;
hp680bl_send_intensity(bd);
return 0;
}
static void hp680bl_remove(struct platform_device *pdev)
{
struct backlight_device *bd = platform_get_drvdata(pdev);
bd->props.brightness = 0;
bd->props.power = 0;
hp680bl_send_intensity(bd);
}
static struct platform_driver hp680bl_driver = {
.probe = hp680bl_probe,
.remove_new = hp680bl_remove,
.driver = {
.name = "hp680-bl",
.pm = &hp680bl_pm_ops,
},
};
static struct platform_device *hp680bl_device;
static int __init hp680bl_init(void)
{
int ret;
ret = platform_driver_register(&hp680bl_driver);
if (ret)
return ret;
hp680bl_device = platform_device_register_simple("hp680-bl", -1,
NULL, 0);
if (IS_ERR(hp680bl_device)) {
platform_driver_unregister(&hp680bl_driver);
return PTR_ERR(hp680bl_device);
}
return 0;
}
static void __exit hp680bl_exit(void)
{
platform_device_unregister(hp680bl_device);
platform_driver_unregister(&hp680bl_driver);
}
module_init(hp680bl_init);
module_exit(hp680bl_exit);
MODULE_AUTHOR("Andriy Skulysh <askulysh@gmail.com>");
MODULE_DESCRIPTION("HP Jornada 680 Backlight Driver");
MODULE_LICENSE("GPL");