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[PATCH] fbdev: Add fbset -a support 

Add capability to fbdev to listen to the FB_ACTIVATE_ALL flag.  If set, it
notifies fbcon that all consoles must be set to the current var.

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 2005-09-09 13:04:29 -07:00 committed by Linus Torvalds
parent cb2e87a65d
commit 7726e9e10f
3 changed files with 55 additions and 2 deletions
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48
drivers/video/console/fbcon.c
View File

@ -2593,6 +2593,51 @@ static void fbcon_modechanged(struct fb_info *info)
}
}
static void fbcon_set_all_vcs(struct fb_info *info)
{
struct fbcon_ops *ops = info->fbcon_par;
struct vc_data *vc;
struct display *p;
int i, rows, cols;
if (!ops || ops->currcon < 0)
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];
info->var.xoffset = info->var.yoffset = p->yscroll = 0;
var_to_display(p, &info->var, info);
cols = info->var.xres / vc->vc_font.width;
rows = info->var.yres / vc->vc_font.height;
vc_resize(vc, cols, rows);
if (CON_IS_VISIBLE(vc)) {
updatescrollmode(p, info, vc);
scrollback_max = 0;
scrollback_current = 0;
update_var(vc->vc_num, info);
fbcon_set_palette(vc, color_table);
update_screen(vc);
if (softback_buf) {
int l = fbcon_softback_size / vc->vc_size_row;
if (l > 5)
softback_end = softback_buf + l * vc->vc_size_row;
else {
/* Smaller scrollback makes no sense, and 0
would screw the operation totally */
softback_top = 0;
}
}
}
}
}
static int fbcon_mode_deleted(struct fb_info *info,
struct fb_videomode *mode)
{
@ -2708,6 +2753,9 @@ static int fbcon_event_notify(struct notifier_block *self,
case FB_EVENT_MODE_CHANGE:
fbcon_modechanged(info);
break;
case FB_EVENT_MODE_CHANGE_ALL:
fbcon_set_all_vcs(info);
break;
case FB_EVENT_MODE_DELETE:
mode = event->data;
ret = fbcon_mode_deleted(info, mode);

6
drivers/video/fbmem.c
View File

@ -684,11 +684,13 @@ fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var)
if (!err && (flags & FBINFO_MISC_USEREVENT)) {
struct fb_event event;
int evnt = (var->activate & FB_ACTIVATE_ALL) ?
FB_EVENT_MODE_CHANGE_ALL :
FB_EVENT_MODE_CHANGE;
info->flags &= ~FBINFO_MISC_USEREVENT;
event.info = info;
notifier_call_chain(&fb_notifier_list,
FB_EVENT_MODE_CHANGE,
notifier_call_chain(&fb_notifier_list, evnt,
&event);
}
}

3
include/linux/fb.h
View File

@ -495,6 +495,9 @@ struct fb_cursor_user {
#define FB_EVENT_BLANK 0x08
/* Private modelist is to be replaced */
#define FB_EVENT_NEW_MODELIST 0x09
/* 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
struct fb_event {
struct fb_info *info;