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| author | Uma Shankar <uma.shankar@intel.com> | 2019-02-11 19:20:21 +0530 |
|---|---|---|
| committer | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2019-02-13 11:25:14 +0100 |
| commit | 8957129cb3b0144aceb46b8002cb5d1c45326b01 (patch) | |
| tree | c23157f4e24e2e6771b001f35c771dd4d546634e /drivers/gpu/drm/i915/i915_pci.c | |
| parent | b3b0391af2afa783841fb70eaa715b8a79a17d99 (diff) | |
| download | linux-stable-8957129cb3b0144aceb46b8002cb5d1c45326b01.tar.gz linux-stable-8957129cb3b0144aceb46b8002cb5d1c45326b01.tar.bz2 linux-stable-8957129cb3b0144aceb46b8002cb5d1c45326b01.zip | |
drm/i915/glk: Fix degamma lut programming
Fixed the glk degamma lut programming which currently
was hard coding a linear lut all the time, making degamma
block of glk basically a pass through.
Currently degamma lut for glk is assigned as 0 in platform
configuration. Updated the same to 33 as per the hardware
capability. IGT tests for degamma were getting skipped due to
this, spotted by Swati.
ToDo: The current gamma/degamm lut ABI has just 16bit for each
color component. This is not enough for GLK+, since input
precision is increased to 3.16 which will need 19bit entries.
v2: Added Matt's RB.
v3: Changed uint32_t to u32.
v4: Fixed Maarten's review comment
Credits-to: Swati Sharma <swati2.sharma@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1549893025-21837-2-git-send-email-uma.shankar@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_pci.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_pci.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c index 36fa6f1905fc..3c3afbd737b2 100644 --- a/drivers/gpu/drm/i915/i915_pci.c +++ b/drivers/gpu/drm/i915/i915_pci.c @@ -73,7 +73,7 @@ .gamma_lut_tests = DRM_COLOR_LUT_NON_DECREASING, \ } #define GLK_COLORS \ - .color = { .degamma_lut_size = 0, .gamma_lut_size = 1024, \ + .color = { .degamma_lut_size = 33, .gamma_lut_size = 1024, \ .degamma_lut_tests = DRM_COLOR_LUT_NON_DECREASING | \ DRM_COLOR_LUT_EQUAL_CHANNELS, \ } |