diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2019-04-01 23:02:30 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2019-04-03 22:26:13 +0300 |
| commit | 821062478ce4377b8333e96be8758670679868f3 (patch) | |
| tree | 286508b04cb33df5ab06dc712faed82fc0cd5a8a /drivers/gpu/drm/i915/i915_pci.c | |
| parent | e262568eb58fe79917167817d16ebf8e39b7d696 (diff) | |
drm/i915: Expose the legacy LUT via the GAMMA_LUT/GAMMA_LUT_SIZE props on gen2/3
Just so we don't leave gen2/3 out in the cold let's advertize the
legacy LUT via the GAMMA_LUT/GAMMA_LUT_SIZE props. Without the
GAMMA_LUT prop we can't actually load a LUT using the atomic ioctl
(in preparation for the day of 100% atomic driver).
Supposedly some gen2/3 platforms have an interpolated 10bit gamma mode
as well. It's slightly funkier than the i965+ mode since you have to
specify the slope for the interpolation by hand. But when I tried it
I couldn't get it to work, the hardware just insisted on using the
8bit more regardless of the state of the relevant PIPECONF bit.
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190401200231.2333-7-ville.syrjala@linux.intel.com
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_pci.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_pci.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c index 84078fbdb2d8..81d14dc2fa61 100644 --- a/drivers/gpu/drm/i915/i915_pci.c +++ b/drivers/gpu/drm/i915/i915_pci.c @@ -116,6 +116,8 @@ [PIPE_C] = IVB_CURSOR_C_OFFSET, \ } +#define I9XX_COLORS \ + .color = { .gamma_lut_size = 256 } #define I965_COLORS \ .color = { .gamma_lut_size = 129, \ .gamma_lut_tests = DRM_COLOR_LUT_NON_DECREASING, \ @@ -156,6 +158,7 @@ .has_coherent_ggtt = false, \ I9XX_PIPE_OFFSETS, \ I9XX_CURSOR_OFFSETS, \ + I9XX_COLORS, \ GEN_DEFAULT_PAGE_SIZES #define I845_FEATURES \ @@ -172,6 +175,7 @@ .has_coherent_ggtt = false, \ I845_PIPE_OFFSETS, \ I845_CURSOR_OFFSETS, \ + I9XX_COLORS, \ GEN_DEFAULT_PAGE_SIZES static const struct intel_device_info intel_i830_info = { @@ -205,6 +209,7 @@ static const struct intel_device_info intel_i865g_info = { .has_coherent_ggtt = true, \ I9XX_PIPE_OFFSETS, \ I9XX_CURSOR_OFFSETS, \ + I9XX_COLORS, \ GEN_DEFAULT_PAGE_SIZES static const struct intel_device_info intel_i915g_info = { |