diff options
| author | Mika Kahola <mika.kahola@intel.com> | 2016-09-09 13:10:56 +0200 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2016-09-15 13:51:00 +0200 |
| commit | f9bb705e65f64710971e50624db5ef1857d9db39 (patch) | |
| tree | 6cd7cc003a1900fc8f9105dc4d72361335b2e9ed /drivers/gpu | |
| parent | drm/i915: Check pixel rate for DP to VGA dongle (diff) | |
| download | linux-f9bb705e65f64710971e50624db5ef1857d9db39.tar.xz linux-f9bb705e65f64710971e50624db5ef1857d9db39.zip | |
drm/i915: Update bits per component for display info
DisplayPort branch device may define max supported bits per
component. Update display info based on this value if bpc
is defined.
v2: cleanup to match the drm_dp_helper.c patches introduced
earlier in this series
v3: Fill bpc for connector's display info in separate
drm_dp_helper function (Daniel)
v4: remove updating bpc for display info as it may be overridden
when parsing EDID. Instead, check bpc for DP branch device
during compute_config
v5: Indentation fixes (Jim Bride)
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Jim Bride <jim.bride@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1473419458-17080-11-git-send-email-mika.kahola@intel.com
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 8f17c882929b..69cee9b0a08d 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1524,6 +1524,20 @@ void intel_dp_compute_rate(struct intel_dp *intel_dp, int port_clock, } } +int intel_dp_compute_bpp(struct intel_dp *intel_dp, + struct intel_crtc_state *pipe_config) +{ + int bpp, bpc; + + bpp = pipe_config->pipe_bpp; + bpc = drm_dp_downstream_max_bpc(intel_dp->dpcd, intel_dp->downstream_ports); + + if (bpc > 0) + bpp = min(bpp, 3*bpc); + + return bpp; +} + bool intel_dp_compute_config(struct intel_encoder *encoder, struct intel_crtc_state *pipe_config, @@ -1590,7 +1604,7 @@ intel_dp_compute_config(struct intel_encoder *encoder, /* Walk through all bpp values. Luckily they're all nicely spaced with 2 * bpc in between. */ - bpp = pipe_config->pipe_bpp; + bpp = intel_dp_compute_bpp(intel_dp, pipe_config); if (is_edp(intel_dp)) { /* Get bpp from vbt only for panels that dont have bpp in edid */ |