Should work better on some panels.
Signed-off-by: Alex Deucher <alexdeucher@xxxxxxxxx>
---
drivers/gpu/drm/radeon/radeon_combios.c | 26 ++++++++++++++------------
1 files changed, 14 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
index ea34ec5..93f18bb 100644
--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -1113,18 +1113,20 @@ struct radeon_encoder_lvds *radeon_combios_get_lvds_info(struct radeon_encoder
break;
if ((RBIOS16(tmp) == lvds->native_mode.hdisplay) &&
- (RBIOS16(tmp + 2) ==
- lvds->native_mode.vdisplay)) {
- lvds->native_mode.htotal = RBIOS16(tmp + 17) * 8;
- lvds->native_mode.hsync_start = RBIOS16(tmp + 21) * 8;
- lvds->native_mode.hsync_end = (RBIOS8(tmp + 23) +
- RBIOS16(tmp + 21)) * 8;
-
- lvds->native_mode.vtotal = RBIOS16(tmp + 24);
- lvds->native_mode.vsync_start = RBIOS16(tmp + 28) & 0x7ff;
- lvds->native_mode.vsync_end =
- ((RBIOS16(tmp + 28) & 0xf800) >> 11) +
- (RBIOS16(tmp + 28) & 0x7ff);
+ (RBIOS16(tmp + 2) == lvds->native_mode.vdisplay)) {
+ lvds->native_mode.htotal = lvds->native_mode.hdisplay +
+ (RBIOS16(tmp + 17) - RBIOS16(tmp + 19)) * 8;
+ lvds->native_mode.hsync_start = lvds->native_mode.hdisplay +
+ (RBIOS16(tmp + 21) - RBIOS16(tmp + 19) - 1) * 8;
+ lvds->native_mode.hsync_end = lvds->native_mode.hsync_start +
+ (RBIOS8(tmp + 23) * 8);
+
+ lvds->native_mode.vtotal = lvds->native_mode.vdisplay +
+ (RBIOS16(tmp + 24) - RBIOS16(tmp + 26));
+ lvds->native_mode.vsync_start = lvds->native_mode.vdisplay +
+ ((RBIOS16(tmp + 28) & 0x7ff) - RBIOS16(tmp + 26));
+ lvds->native_mode.vsync_end = lvds->native_mode.vsync_start +
+ ((RBIOS16(tmp + 28) & 0xf800) >> 11);
lvds->native_mode.clock = RBIOS16(tmp + 9) * 10;
lvds->native_mode.flags = 0;
--
1.5.6.3
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