diff options
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 5 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 10 |
2 files changed, 10 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 527d30a..0bbbb77 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -1922,7 +1922,10 @@ /* Display & cursor control */ /* dithering flag on Ironlake */ -#define PIPE_ENABLE_DITHER (1 << 4) +#define PIPE_ENABLE_DITHER (1 << 4) +#define PIPE_DITHER_TYPE_MASK (3 << 2) +#define PIPE_DITHER_TYPE_SPATIAL (0 << 2) +#define PIPE_DITHER_TYPE_ST01 (1 << 2) /* Pipe A */ #define PIPEADSL 0x70000 #define PIPEACONF 0x70008 diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 3836f56..119a41a 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -3677,14 +3677,16 @@ static int intel_crtc_mode_set(struct drm_crtc *crtc, /* set the dithering flag */ if (IS_I965G(dev)) { if (dev_priv->lvds_dither) { - if (HAS_PCH_SPLIT(dev)) + if (HAS_PCH_SPLIT(dev)) { pipeconf |= PIPE_ENABLE_DITHER; - else + pipeconf |= PIPE_DITHER_TYPE_ST01; + } else lvds |= LVDS_ENABLE_DITHER; } else { - if (HAS_PCH_SPLIT(dev)) + if (HAS_PCH_SPLIT(dev)) { pipeconf &= ~PIPE_ENABLE_DITHER; - else + pipeconf &= ~PIPE_DITHER_TYPE_MASK; + } else lvds &= ~LVDS_ENABLE_DITHER; } } |
