diff options
| author | Paulo Zanoni <paulo.r.zanoni@intel.com> | 2013-11-02 21:07:38 -0700 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-11-08 18:09:54 +0100 |
| commit | 756f85cffef2bc84aa85b25031c1c97721928bd2 (patch) | |
| tree | 4f182799c84e1ef6c8812a0e3c116b312f827e7a /drivers/gpu/drm/i915/intel_display.c | |
| parent | c7670b1098b1a05c5266a7d3d2f07165621e7de9 (diff) | |
| download | lwn-756f85cffef2bc84aa85b25031c1c97721928bd2.tar.gz lwn-756f85cffef2bc84aa85b25031c1c97721928bd2.zip | |
drm/i915/bdw: Broadwell has PIPEMISC
And it inherits some bits from the previous TRANS_CONF (aka PIPE_CONF
on previous gens).
v2: Rebase on to of the pipe config bpp handling rework.
v3: Rebased on top of the pipe_config->dither refactoring.
v4: Drop the read-modify-write cycle for PIPEMISC, similarly to how we
now also build up PIPECONF completely ourselves - keeping around
random stuff set by the BIOS just isn't a good idea. I've checked BDW
BSpec and we already set all relevant bits.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> (v1)
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_display.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index e555f540e7a1..6d64337c5538 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -5818,14 +5818,16 @@ static void intel_set_pipe_csc(struct drm_crtc *crtc) static void haswell_set_pipeconf(struct drm_crtc *crtc) { - struct drm_i915_private *dev_priv = crtc->dev->dev_private; + struct drm_device *dev = crtc->dev; + struct drm_i915_private *dev_priv = dev->dev_private; struct intel_crtc *intel_crtc = to_intel_crtc(crtc); + enum pipe pipe = intel_crtc->pipe; enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder; uint32_t val; val = 0; - if (intel_crtc->config.dither) + if (IS_HASWELL(dev) && intel_crtc->config.dither) val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP); if (intel_crtc->config.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) @@ -5838,6 +5840,33 @@ static void haswell_set_pipeconf(struct drm_crtc *crtc) I915_WRITE(GAMMA_MODE(intel_crtc->pipe), GAMMA_MODE_MODE_8BIT); POSTING_READ(GAMMA_MODE(intel_crtc->pipe)); + + if (IS_BROADWELL(dev)) { + val = 0; + + switch (intel_crtc->config.pipe_bpp) { + case 18: + val |= PIPEMISC_DITHER_6_BPC; + break; + case 24: + val |= PIPEMISC_DITHER_8_BPC; + break; + case 30: + val |= PIPEMISC_DITHER_10_BPC; + break; + case 36: + val |= PIPEMISC_DITHER_12_BPC; + break; + default: + /* Case prevented by pipe_config_set_bpp. */ + BUG(); + } + + if (intel_crtc->config.dither) + val |= PIPEMISC_DITHER_ENABLE | PIPEMISC_DITHER_TYPE_SP; + + I915_WRITE(PIPEMISC(pipe), val); + } } static bool ironlake_compute_clocks(struct drm_crtc *crtc, |