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authorTormod Volden <debian.tormod@gmail.com>2011-05-28 15:06:11 +0000
committerPaul Mundt <lethal@linux-sh.org>2011-06-02 17:05:18 +0900
commit1bae852fb0beca3cc95b8de84efbc7254cae62e1 (patch)
treeee718e272f1c6bbd1ab0e168946727f2b1ee592e
parent554cc1028603587e28ae49e9594b1508df5f29aa (diff)
savagefb: Use panel CVT mode as default
If there is no EDID but an LCD panel is detected, generate a CVT mode from the panel resolution (at 60 Hz), and use this as a default mode instead of the hardcoded 800x600x8 mode. Signed-off-by: Tormod Volden <debian.tormod@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
-rw-r--r--drivers/video/modedb.c1
-rw-r--r--drivers/video/savage/savagefb_driver.c16
2 files changed, 17 insertions, 0 deletions
diff --git a/drivers/video/modedb.c b/drivers/video/modedb.c
index 48c3ea8652b6..cb175fe7abc0 100644
--- a/drivers/video/modedb.c
+++ b/drivers/video/modedb.c
@@ -1128,3 +1128,4 @@ EXPORT_SYMBOL(fb_find_best_mode);
EXPORT_SYMBOL(fb_find_nearest_mode);
EXPORT_SYMBOL(fb_videomode_to_modelist);
EXPORT_SYMBOL(fb_find_mode);
+EXPORT_SYMBOL(fb_find_mode_cvt);
diff --git a/drivers/video/savage/savagefb_driver.c b/drivers/video/savage/savagefb_driver.c
index 3b7f2f5bae71..4de541ca9c52 100644
--- a/drivers/video/savage/savagefb_driver.c
+++ b/drivers/video/savage/savagefb_driver.c
@@ -2237,6 +2237,22 @@ static int __devinit savagefb_probe(struct pci_dev* dev,
&info->modelist);
#endif
info->var = savagefb_var800x600x8;
+ /* if a panel was detected, default to a CVT mode instead */
+ if (par->SavagePanelWidth) {
+ struct fb_videomode cvt_mode;
+
+ memset(&cvt_mode, 0, sizeof(cvt_mode));
+ cvt_mode.xres = par->SavagePanelWidth;
+ cvt_mode.yres = par->SavagePanelHeight;
+ cvt_mode.refresh = 60;
+ /* FIXME: if we know there is only the panel
+ * we can enable reduced blanking as well */
+ if (fb_find_mode_cvt(&cvt_mode, 0, 0))
+ printk(KERN_WARNING "No CVT mode found for panel\n");
+ else if (fb_find_mode(&info->var, info, NULL, NULL, 0,
+ &cvt_mode, 0) != 3)
+ info->var = savagefb_var800x600x8;
+ }
if (mode_option) {
fb_find_mode(&info->var, info, mode_option,