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/*
* LCD Lowlevel Control Abstraction
*
* Copyright (C) 2003,2004 Hewlett-Packard Company
*
*/
#ifndef _LINUX_LCD_H
#define _LINUX_LCD_H
#include <linux/device.h>
#include <linux/mutex.h>
#include <linux/notifier.h>
#include <linux/fb.h>
struct lcd_device;
struct fb_info;
struct lcd_properties {
int max_contrast;
};
struct lcd_ops {
int (*get_power)(struct lcd_device *);
int (*set_power)(struct lcd_device *, int power);
int (*get_contrast)(struct lcd_device *);
int (*set_contrast)(struct lcd_device *, int contrast);
int (*set_mode)(struct lcd_device *, struct fb_videomode *);
int (*check_fb)(struct lcd_device *, struct fb_info *);
};
struct lcd_device {
struct lcd_properties props;
struct mutex ops_lock;
struct lcd_ops *ops;
struct mutex update_lock;
struct notifier_block fb_notif;
struct device dev;
};
struct lcd_platform_data {
int (*reset)(struct lcd_device *ld);
int (*power_on)(struct lcd_device *ld, int enable);
int lcd_enabled;
unsigned int reset_delay;
unsigned int power_on_delay;
unsigned int power_off_delay;
void *pdata;
};
static inline void lcd_set_power(struct lcd_device *ld, int power)
{
mutex_lock(&ld->update_lock);
if (ld->ops && ld->ops->set_power)
ld->ops->set_power(ld, power);
mutex_unlock(&ld->update_lock);
}
extern struct lcd_device *lcd_device_register(const char *name,
struct device *parent, void *devdata, struct lcd_ops *ops);
extern void lcd_device_unregister(struct lcd_device *ld);
#define to_lcd_device(obj) container_of(obj, struct lcd_device, dev)
static inline void * lcd_get_data(struct lcd_device *ld_dev)
{
return dev_get_drvdata(&ld_dev->dev);
}
#endif
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