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[PATCH] fbcon: Console Rotation - Add ability to control rotation via sysfs

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Add ability to set rotation via sysfs.  The attributes are located in
/sys/class/graphics/fb[n] and accepts 0 - unrotated; 1 - clockwise; 2 - upside
down; 3 - counterclockwise.

The attributes are:

con_rotate (r/w) -   set rotation of the active console
con_rotate_all (w) - set rotation of all consoles
rotate (r/w) -       set rotation of the framebuffer, if supported.
Currently, none of the drivers support this.

This is probably temporary, since con_rotate and con_rotate_all are
console-specific and has no business being under the fb device.  However,
until the console layer acquires it's own sysfs class, these attributes will
temporarily reside here.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Antonino A. Daplas
2005-11-08 21:39:15 -08:00
committed by Linus Torvalds
parent ed8c0e99f2
commit a812c94b94
4 changed files with 168 additions and 0 deletions
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7
include/linux/fb.h
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@@ -508,6 +508,12 @@ struct fb_cursor_user {
/* The resolution of the passed in fb_info about to change and
all vc's should be changed */
#define FB_EVENT_MODE_CHANGE_ALL 0x0A
/* CONSOLE-SPECIFIC: set console rotation */
#define FB_EVENT_SET_CON_ROTATE 0x0B
/* CONSOLE-SPECIFIC: get console rotation */
#define FB_EVENT_GET_CON_ROTATE 0x0C
/* CONSOLE-SPECIFIC: rotate all consoles */
#define FB_EVENT_SET_CON_ROTATE_ALL 0x0D
struct fb_event {
struct fb_info *info;
@@ -836,6 +842,7 @@ extern int fb_get_color_depth(struct fb_var_screeninfo *var,
struct fb_fix_screeninfo *fix);
extern int fb_get_options(char *name, char **option);
extern int fb_new_modelist(struct fb_info *info);
extern int fb_con_duit(struct fb_info *info, int event, void *data);
extern struct fb_info *registered_fb[FB_MAX];
extern int num_registered_fb;