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drm/i915: Add i9xx_lut_8()

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We have a nice little helper to compute a single LUT entry
for everything except the 8bpc legacy gamma mode. Let's
complete the set.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191107151725.10507-5-ville.syrjala@linux.intel.com
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
This commit is contained in:
Ville Syrjälä 2019-11-07 17:17:17 +02:00
parent 42f96e5bd4
commit 70697e29c8
1 changed files with 8 additions and 4 deletions
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12
drivers/gpu/drm/i915/display/intel_color.c
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@ -392,6 +392,13 @@ static void cherryview_load_csc_matrix(const struct intel_crtc_state *crtc_state
intel_de_write(dev_priv, CGM_PIPE_MODE(pipe), crtc_state->cgm_mode);
}
static u32 i9xx_lut_8(const struct drm_color_lut *color)
{
return drm_color_lut_extract(color->red, 8) << 16 |
drm_color_lut_extract(color->green, 8) << 8 |
drm_color_lut_extract(color->blue, 8);
}
/* i965+ "10.6" bit interpolated format "even DW" (low 8 bits) */
static u32 i965_lut_10p6_ldw(const struct drm_color_lut *color)
{
@ -435,10 +442,7 @@ static void i9xx_load_luts_internal(const struct intel_crtc_state *crtc_state,
const struct drm_color_lut *lut = blob->data;
for (i = 0; i < 256; i++) {
u32 word =
(drm_color_lut_extract(lut[i].red, 8) << 16) |
(drm_color_lut_extract(lut[i].green, 8) << 8) |
drm_color_lut_extract(lut[i].blue, 8);
u32 word = i9xx_lut_8(&lut[i]);
if (HAS_GMCH(dev_priv))
intel_de_write(dev_priv, PALETTE(pipe, i),