[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>
diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index 35c88bd..751890a 100644
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -2593,6 +2593,51 @@
}
}
+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 @@
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);
diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c
index 4ff853f..a8eee79 100644
--- a/drivers/video/fbmem.c
+++ b/drivers/video/fbmem.c
@@ -684,11 +684,13 @@
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);
}
}
diff --git a/include/linux/fb.h b/include/linux/fb.h
index bc24bee..70da819 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -495,6 +495,9 @@
#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;