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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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72
drivers/video/console/fbcon.c
View File

@@ -193,6 +193,8 @@ static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *va
int unit);
static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
int line, int count, int dy);
static void fbcon_modechanged(struct fb_info *info);
static void fbcon_set_all_vcs(struct fb_info *info);
#ifdef CONFIG_MAC
/*
@@ -218,6 +220,51 @@ static inline void fbcon_set_rotation(struct fb_info *info, struct display *p)
else
ops->rotate = 0;
}
static void fbcon_rotate(struct fb_info *info, u32 rotate)
{
struct fbcon_ops *ops= info->fbcon_par;
struct fb_info *fb_info;
if (!ops || ops->currcon == -1)
return;
fb_info = registered_fb[con2fb_map[ops->currcon]];
if (info == fb_info) {
struct display *p = &fb_display[ops->currcon];
if (rotate < 4)
p->con_rotate = rotate;
else
p->con_rotate = 0;
fbcon_modechanged(info);
}
}
static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
{
struct fbcon_ops *ops = info->fbcon_par;
struct vc_data *vc;
struct display *p;
int i;
if (!ops || ops->currcon < 0 || rotate > 3)
return;
for (i = 0; i < MAX_NR_CONSOLES; i++) {
vc = vc_cons[i].d;
if (!vc || vc->vc_mode != KD_TEXT ||
registered_fb[con2fb_map[i]] != info)
continue;
p = &fb_display[vc->vc_num];
p->con_rotate = rotate;
}
fbcon_set_all_vcs(info);
}
#else
static inline void fbcon_set_rotation(struct fb_info *info, struct display *p)
{
@@ -225,8 +272,25 @@ static inline void fbcon_set_rotation(struct fb_info *info, struct display *p)
ops->rotate = FB_ROTATE_UR;
}
static void fbcon_rotate(struct fb_info *info, u32 rotate)
{
return;
}
static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
{
return;
}
#endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */
static int fbcon_get_rotate(struct fb_info *info)
{
struct fbcon_ops *ops = info->fbcon_par;
return (ops) ? ops->rotate : 0;
}
static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info)
{
struct fbcon_ops *ops = info->fbcon_par;
@@ -2864,6 +2928,14 @@ static int fbcon_event_notify(struct notifier_block *self,
case FB_EVENT_NEW_MODELIST:
fbcon_new_modelist(info);
break;
case FB_EVENT_SET_CON_ROTATE:
fbcon_rotate(info, *(int *)event->data);
break;
case FB_EVENT_GET_CON_ROTATE:
ret = fbcon_get_rotate(info);
break;
case FB_EVENT_SET_CON_ROTATE_ALL:
fbcon_rotate_all(info, *(int *)event->data);
}
return ret;