diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/lcd.h |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/linux/lcd.h')
-rw-r--r-- | include/linux/lcd.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/include/linux/lcd.h b/include/linux/lcd.h new file mode 100644 index 00000000000..d739b2e7eac --- /dev/null +++ b/include/linux/lcd.h | |||
@@ -0,0 +1,56 @@ | |||
1 | /* | ||
2 | * LCD Lowlevel Control Abstraction | ||
3 | * | ||
4 | * Copyright (C) 2003,2004 Hewlett-Packard Company | ||
5 | * | ||
6 | */ | ||
7 | |||
8 | #ifndef _LINUX_LCD_H | ||
9 | #define _LINUX_LCD_H | ||
10 | |||
11 | #include <linux/device.h> | ||
12 | #include <linux/notifier.h> | ||
13 | |||
14 | struct lcd_device; | ||
15 | struct fb_info; | ||
16 | |||
17 | /* This structure defines all the properties of a LCD flat panel. */ | ||
18 | struct lcd_properties { | ||
19 | /* Owner module */ | ||
20 | struct module *owner; | ||
21 | /* Get the LCD panel power status (0: full on, 1..3: controller | ||
22 | power on, flat panel power off, 4: full off), see FB_BLANK_XXX */ | ||
23 | int (*get_power)(struct lcd_device *); | ||
24 | /* Enable or disable power to the LCD (0: on; 4: off, see FB_BLANK_XXX) */ | ||
25 | int (*set_power)(struct lcd_device *, int power); | ||
26 | /* The maximum value for contrast (read-only) */ | ||
27 | int max_contrast; | ||
28 | /* Get the current contrast setting (0-max_contrast) */ | ||
29 | int (*get_contrast)(struct lcd_device *); | ||
30 | /* Set LCD panel contrast */ | ||
31 | int (*set_contrast)(struct lcd_device *, int contrast); | ||
32 | /* Check if given framebuffer device is the one LCD is bound to; | ||
33 | return 0 if not, !=0 if it is. If NULL, lcd always matches the fb. */ | ||
34 | int (*check_fb)(struct fb_info *); | ||
35 | }; | ||
36 | |||
37 | struct lcd_device { | ||
38 | /* This protects the 'props' field. If 'props' is NULL, the driver that | ||
39 | registered this device has been unloaded, and if class_get_devdata() | ||
40 | points to something in the body of that driver, it is also invalid. */ | ||
41 | struct semaphore sem; | ||
42 | /* If this is NULL, the backing module is unloaded */ | ||
43 | struct lcd_properties *props; | ||
44 | /* The framebuffer notifier block */ | ||
45 | struct notifier_block fb_notif; | ||
46 | /* The class device structure */ | ||
47 | struct class_device class_dev; | ||
48 | }; | ||
49 | |||
50 | extern struct lcd_device *lcd_device_register(const char *name, | ||
51 | void *devdata, struct lcd_properties *lp); | ||
52 | extern void lcd_device_unregister(struct lcd_device *ld); | ||
53 | |||
54 | #define to_lcd_device(obj) container_of(obj, struct lcd_device, class_dev) | ||
55 | |||
56 | #endif | ||