2005-09-07 00:16:45 +02:00
|
|
|
/*
|
|
|
|
* Backlight control code for Sharp Zaurus SL-5500
|
|
|
|
*
|
|
|
|
* Copyright 2005 John Lenz <lenz@cs.wisc.edu>
|
|
|
|
* Maintainer: Pavel Machek <pavel@suse.cz> (unless John wants to :-)
|
|
|
|
* GPL v2
|
|
|
|
*
|
|
|
|
* This driver assumes single CPU. That's okay, because collie is
|
|
|
|
* slightly old hardware, and noone is going to retrofit second CPU to
|
|
|
|
* old PDA.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* LCD power functions */
|
|
|
|
#include <linux/config.h>
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/init.h>
|
|
|
|
#include <linux/delay.h>
|
|
|
|
#include <linux/device.h>
|
|
|
|
#include <linux/interrupt.h>
|
|
|
|
|
|
|
|
#include <asm/hardware/locomo.h>
|
|
|
|
#include <asm/irq.h>
|
2006-03-25 12:07:33 +01:00
|
|
|
#include <asm/mach/sharpsl_param.h>
|
|
|
|
#include <asm/mach-types.h>
|
2005-09-07 00:16:45 +02:00
|
|
|
|
2006-03-25 12:07:33 +01:00
|
|
|
#include "../../../arch/arm/mach-sa1100/generic.h"
|
2005-09-07 00:16:45 +02:00
|
|
|
|
|
|
|
static struct locomo_dev *locomolcd_dev;
|
|
|
|
|
|
|
|
static void locomolcd_on(int comadj)
|
|
|
|
{
|
|
|
|
locomo_gpio_set_dir(locomolcd_dev, LOCOMO_GPIO_LCD_VSHA_ON, 0);
|
|
|
|
locomo_gpio_write(locomolcd_dev, LOCOMO_GPIO_LCD_VSHA_ON, 1);
|
|
|
|
mdelay(2);
|
|
|
|
|
|
|
|
locomo_gpio_set_dir(locomolcd_dev, LOCOMO_GPIO_LCD_VSHD_ON, 0);
|
|
|
|
locomo_gpio_write(locomolcd_dev, LOCOMO_GPIO_LCD_VSHD_ON, 1);
|
|
|
|
mdelay(2);
|
|
|
|
|
|
|
|
locomo_m62332_senddata(locomolcd_dev, comadj, 0);
|
|
|
|
mdelay(5);
|
|
|
|
|
|
|
|
locomo_gpio_set_dir(locomolcd_dev, LOCOMO_GPIO_LCD_VEE_ON, 0);
|
|
|
|
locomo_gpio_write(locomolcd_dev, LOCOMO_GPIO_LCD_VEE_ON, 1);
|
|
|
|
mdelay(10);
|
|
|
|
|
|
|
|
/* TFTCRST | CPSOUT=0 | CPSEN */
|
|
|
|
locomo_writel(0x01, locomolcd_dev->mapbase + LOCOMO_TC);
|
|
|
|
|
|
|
|
/* Set CPSD */
|
|
|
|
locomo_writel(6, locomolcd_dev->mapbase + LOCOMO_CPSD);
|
|
|
|
|
|
|
|
/* TFTCRST | CPSOUT=0 | CPSEN */
|
|
|
|
locomo_writel((0x04 | 0x01), locomolcd_dev->mapbase + LOCOMO_TC);
|
|
|
|
mdelay(10);
|
|
|
|
|
|
|
|
locomo_gpio_set_dir(locomolcd_dev, LOCOMO_GPIO_LCD_MOD, 0);
|
|
|
|
locomo_gpio_write(locomolcd_dev, LOCOMO_GPIO_LCD_MOD, 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void locomolcd_off(int comadj)
|
|
|
|
{
|
|
|
|
/* TFTCRST=1 | CPSOUT=1 | CPSEN = 0 */
|
|
|
|
locomo_writel(0x06, locomolcd_dev->mapbase + LOCOMO_TC);
|
|
|
|
mdelay(1);
|
|
|
|
|
|
|
|
locomo_gpio_write(locomolcd_dev, LOCOMO_GPIO_LCD_VSHA_ON, 0);
|
|
|
|
mdelay(110);
|
|
|
|
|
|
|
|
locomo_gpio_write(locomolcd_dev, LOCOMO_GPIO_LCD_VEE_ON, 0);
|
|
|
|
mdelay(700);
|
|
|
|
|
|
|
|
/* TFTCRST=0 | CPSOUT=0 | CPSEN = 0 */
|
|
|
|
locomo_writel(0, locomolcd_dev->mapbase + LOCOMO_TC);
|
|
|
|
locomo_gpio_write(locomolcd_dev, LOCOMO_GPIO_LCD_MOD, 0);
|
|
|
|
locomo_gpio_write(locomolcd_dev, LOCOMO_GPIO_LCD_VSHD_ON, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
void locomolcd_power(int on)
|
|
|
|
{
|
2006-03-25 12:07:33 +01:00
|
|
|
int comadj = sharpsl_param.comadj;
|
2005-09-07 00:16:45 +02:00
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
local_irq_save(flags);
|
|
|
|
|
|
|
|
if (!locomolcd_dev) {
|
|
|
|
local_irq_restore(flags);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* read comadj */
|
2006-03-25 12:07:33 +01:00
|
|
|
if (comadj == -1) {
|
|
|
|
if (machine_is_poodle())
|
|
|
|
comadj = 118;
|
|
|
|
if (machine_is_collie())
|
|
|
|
comadj = 128;
|
|
|
|
}
|
2005-09-07 00:16:45 +02:00
|
|
|
|
|
|
|
if (on)
|
|
|
|
locomolcd_on(comadj);
|
|
|
|
else
|
|
|
|
locomolcd_off(comadj);
|
|
|
|
|
|
|
|
local_irq_restore(flags);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(locomolcd_power);
|
|
|
|
|
|
|
|
static int poodle_lcd_probe(struct locomo_dev *dev)
|
|
|
|
{
|
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
local_irq_save(flags);
|
|
|
|
locomolcd_dev = dev;
|
|
|
|
|
|
|
|
/* the poodle_lcd_power function is called for the first time
|
|
|
|
* from fs_initcall, which is before locomo is activated.
|
|
|
|
* We need to recall poodle_lcd_power here*/
|
|
|
|
#ifdef CONFIG_MACH_POODLE
|
|
|
|
locomolcd_power(1);
|
|
|
|
#endif
|
|
|
|
local_irq_restore(flags);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int poodle_lcd_remove(struct locomo_dev *dev)
|
|
|
|
{
|
|
|
|
unsigned long flags;
|
|
|
|
local_irq_save(flags);
|
|
|
|
locomolcd_dev = NULL;
|
|
|
|
local_irq_restore(flags);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct locomo_driver poodle_lcd_driver = {
|
|
|
|
.drv = {
|
|
|
|
.name = "locomo-backlight",
|
|
|
|
},
|
|
|
|
.devid = LOCOMO_DEVID_BACKLIGHT,
|
|
|
|
.probe = poodle_lcd_probe,
|
|
|
|
.remove = poodle_lcd_remove,
|
|
|
|
};
|
|
|
|
|
|
|
|
static int __init poodle_lcd_init(void)
|
|
|
|
{
|
|
|
|
int ret = locomo_driver_register(&poodle_lcd_driver);
|
|
|
|
if (ret) return ret;
|
|
|
|
|
|
|
|
#ifdef CONFIG_SA1100_COLLIE
|
|
|
|
sa1100fb_lcd_power = locomolcd_power;
|
|
|
|
#endif
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
device_initcall(poodle_lcd_init);
|
|
|
|
|