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path: root/drivers/video/modedb.c
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Diffstat (limited to 'drivers/video/modedb.c')
-rw-r--r--drivers/video/modedb.c88
1 files changed, 77 insertions, 11 deletions
diff --git a/drivers/video/modedb.c b/drivers/video/modedb.c
index 47516c44a39..1da2f84bdc2 100644
--- a/drivers/video/modedb.c
+++ b/drivers/video/modedb.c
@@ -251,6 +251,10 @@ static const struct fb_videomode modedb[] = {
NULL, 60, 1920, 1200, 5177, 128, 336, 1, 38, 208, 3,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED
+ }, {
+ /* 1152x768, 60 Hz, PowerBook G4 Titanium I and II */
+ NULL, 60, 1152, 768, 15386, 158, 26, 29, 3, 136, 6,
+ FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
},
};
@@ -676,6 +680,8 @@ void fb_var_to_videomode(struct fb_videomode *mode,
mode->sync = var->sync;
mode->vmode = var->vmode & FB_VMODE_MASK;
mode->flag = FB_MODE_IS_FROM_VAR;
+ mode->refresh = 0;
+
if (!var->pixclock)
return;
@@ -785,39 +791,39 @@ struct fb_videomode *fb_find_best_mode(struct fb_var_screeninfo *var,
}
/**
- * fb_find_nearest_mode - find mode closest video mode
+ * fb_find_nearest_mode - find closest videomode
*
- * @var: pointer to struct fb_var_screeninfo
+ * @mode: pointer to struct fb_videomode
* @head: pointer to modelist
*
* Finds best matching videomode, smaller or greater in dimension.
* If more than 1 videomode is found, will return the videomode with
- * the closest refresh rate
+ * the closest refresh rate.
*/
-struct fb_videomode *fb_find_nearest_mode(struct fb_var_screeninfo *var,
+struct fb_videomode *fb_find_nearest_mode(struct fb_videomode *mode,
struct list_head *head)
{
struct list_head *pos;
struct fb_modelist *modelist;
- struct fb_videomode *mode, *best = NULL;
+ struct fb_videomode *cmode, *best = NULL;
u32 diff = -1, diff_refresh = -1;
list_for_each(pos, head) {
u32 d;
modelist = list_entry(pos, struct fb_modelist, list);
- mode = &modelist->mode;
+ cmode = &modelist->mode;
- d = abs(mode->xres - var->xres) +
- abs(mode->yres - var->yres);
+ d = abs(cmode->xres - mode->xres) +
+ abs(cmode->yres - mode->yres);
if (diff > d) {
diff = d;
- best = mode;
+ best = cmode;
} else if (diff == d) {
- d = abs(mode->refresh - best->refresh);
+ d = abs(cmode->refresh - mode->refresh);
if (diff_refresh > d) {
diff_refresh = d;
- best = mode;
+ best = cmode;
}
}
}
@@ -942,6 +948,66 @@ void fb_videomode_to_modelist(struct fb_videomode *modedb, int num,
}
}
+struct fb_videomode *fb_find_best_display(struct fb_monspecs *specs,
+ struct list_head *head)
+{
+ struct list_head *pos;
+ struct fb_modelist *modelist;
+ struct fb_videomode *m, *m1 = NULL, *md = NULL, *best = NULL;
+ int first = 0;
+
+ if (!head->prev || !head->next || list_empty(head))
+ goto finished;
+
+ /* get the first detailed mode and the very first mode */
+ list_for_each(pos, head) {
+ modelist = list_entry(pos, struct fb_modelist, list);
+ m = &modelist->mode;
+
+ if (!first) {
+ m1 = m;
+ first = 1;
+ }
+
+ if (m->flag & FB_MODE_IS_FIRST) {
+ md = m;
+ break;
+ }
+ }
+
+ /* first detailed timing is preferred */
+ if (specs->misc & FB_MISC_1ST_DETAIL) {
+ best = md;
+ goto finished;
+ }
+
+ /* find best mode based on display width and height */
+ if (specs->max_x && specs->max_y) {
+ struct fb_var_screeninfo var;
+
+ memset(&var, 0, sizeof(struct fb_var_screeninfo));
+ var.xres = (specs->max_x * 7200)/254;
+ var.yres = (specs->max_y * 7200)/254;
+ m = fb_find_best_mode(&var, head);
+ if (m) {
+ best = m;
+ goto finished;
+ }
+ }
+
+ /* use first detailed mode */
+ if (md) {
+ best = md;
+ goto finished;
+ }
+
+ /* last resort, use the very first mode */
+ best = m1;
+finished:
+ return best;
+}
+EXPORT_SYMBOL(fb_find_best_display);
+
EXPORT_SYMBOL(fb_videomode_to_var);
EXPORT_SYMBOL(fb_var_to_videomode);
EXPORT_SYMBOL(fb_mode_is_equal);