tree b6595002e6e9e653e395a472e3f8f5ed4b6e04f8
parent cb2e87a65d6cd735eb06fa595bf90497af28c37b
author Antonino A. Daplas <[EMAIL PROTECTED]> Sat, 10 Sep 2005 03:04:29 -0700
committer Linus Torvalds <[EMAIL PROTECTED]> Sat, 10 Sep 2005 03:57:58 -0700

[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 <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>

 drivers/video/console/fbcon.c |   48 ++++++++++++++++++++++++++++++++++++++++++
 drivers/video/fbmem.c         |    6 +++--
 include/linux/fb.h            |    3 ++
 3 files changed, 55 insertions(+), 2 deletions(-)

diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -2593,6 +2593,51 @@ static void fbcon_modechanged(struct fb_
        }
 }
 
+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 not
        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
--- a/drivers/video/fbmem.c
+++ b/drivers/video/fbmem.c
@@ -684,11 +684,13 @@ fb_set_var(struct fb_info *info, struct 
 
                        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
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -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;
-
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