diff options
| author | Zhao Yakui <yakui.zhao@intel.com> | 2009-10-10 06:42:37 +0400 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2009-10-13 21:13:19 +0400 |
| commit | a3e17eb8f4080a79738a938abe718be255247a44 (patch) | |
| tree | 8778fe5730ef478477c300207bfece4ea347e598 /drivers/gpu/drm/i915/intel_lvds.c | |
| parent | 9216d44dc13b5e858253f06d83ceea25a9b72f4f (diff) | |
| download | linux-a3e17eb8f4080a79738a938abe718be255247a44.tar.xz | |
drm/i915: Set the LVDS_BORDER when using LVDS scaling mode
According to the spec the LVDS_BORDER_ENABLE bit decides whether the border
data should be included in the active display and data sent to the panel.
Border should be used when in VGA centered (un-scaled) mode or when scaling
a 4:3 source image to a wide screen panel (typical 16:9).
So when the LVDS scaling is used, decide whether the LVDS_BORDER should be
enabled or not according to the current scaling mode.
At the same time fix the typo error in LVDS center scaling mode.
https://bugs.freedesktop.org/show_bug.cgi?id=23789
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
tested-by: Zhao Jian <jian.zhao@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_lvds.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_lvds.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c index 98ae3d73577e..089f18c66ddb 100644 --- a/drivers/gpu/drm/i915/intel_lvds.c +++ b/drivers/gpu/drm/i915/intel_lvds.c @@ -380,7 +380,7 @@ static bool intel_lvds_mode_fixup(struct drm_encoder *encoder, adjusted_mode->crtc_vblank_start + vsync_pos; /* keep the vsync width constant */ adjusted_mode->crtc_vsync_end = - adjusted_mode->crtc_vblank_start + vsync_width; + adjusted_mode->crtc_vsync_start + vsync_width; border = 1; break; case DRM_MODE_SCALE_ASPECT: @@ -526,6 +526,14 @@ out: lvds_priv->pfit_control = pfit_control; lvds_priv->pfit_pgm_ratios = pfit_pgm_ratios; /* + * When there exists the border, it means that the LVDS_BORDR + * should be enabled. + */ + if (border) + dev_priv->lvds_border_bits |= LVDS_BORDER_ENABLE; + else + dev_priv->lvds_border_bits &= ~(LVDS_BORDER_ENABLE); + /* * XXX: It would be nice to support lower refresh rates on the * panels to reduce power consumption, and perhaps match the * user's requested refresh rate. |