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drm/i915: Extract ilk_lut_10()

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Extract a helper to calculate the ILK+ 10bit gamma LUT entry.
It's already duplicated twice, and soon we'll have more.

v2: s/it/bit/ (Matt)

Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
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/20190401200231.2333-2-ville.syrjala@linux.intel.com
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
This commit is contained in:
Ville Syrjälä 2019-04-01 23:02:25 +03:00
parent 59f9e9cab3
commit 320d41b33a
1 changed files with 11 additions and 16 deletions
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27
drivers/gpu/drm/i915/intel_color.c
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@ -359,6 +359,13 @@ static void cherryview_load_csc_matrix(const struct intel_crtc_state *crtc_state
I915_WRITE(CGM_PIPE_MODE(pipe), crtc_state->cgm_mode);
}
static u32 ilk_lut_10(const struct drm_color_lut *color)
{
return drm_color_lut_extract(color->red, 10) << 20 |
drm_color_lut_extract(color->green, 10) << 10 |
drm_color_lut_extract(color->blue, 10);
}
/* Loads the legacy palette/gamma unit for the CRTC. */
static void i9xx_load_luts_internal(const struct intel_crtc_state *crtc_state,
const struct drm_property_blob *blob)
@ -473,14 +480,8 @@ static void bdw_load_degamma_lut(const struct intel_crtc_state *crtc_state)
if (degamma_lut) {
const struct drm_color_lut *lut = degamma_lut->data;
for (i = 0; i < lut_size; i++) {
u32 word =
drm_color_lut_extract(lut[i].red, 10) << 20 |
drm_color_lut_extract(lut[i].green, 10) << 10 |
drm_color_lut_extract(lut[i].blue, 10);
I915_WRITE(PREC_PAL_DATA(pipe), word);
}
for (i = 0; i < lut_size; i++)
I915_WRITE(PREC_PAL_DATA(pipe), ilk_lut_10(&lut[i]));
} else {
for (i = 0; i < lut_size; i++) {
u32 v = (i * ((1 << 10) - 1)) / (lut_size - 1);
@ -509,14 +510,8 @@ static void bdw_load_gamma_lut(const struct intel_crtc_state *crtc_state, u32 of
if (gamma_lut) {
const struct drm_color_lut *lut = gamma_lut->data;
for (i = 0; i < lut_size; i++) {
u32 word =
(drm_color_lut_extract(lut[i].red, 10) << 20) |
(drm_color_lut_extract(lut[i].green, 10) << 10) |
drm_color_lut_extract(lut[i].blue, 10);
I915_WRITE(PREC_PAL_DATA(pipe), word);
}
for (i = 0; i < lut_size; i++)
I915_WRITE(PREC_PAL_DATA(pipe), ilk_lut_10(&lut[i]));
/*
* Program the max register to clamp values > 1.0.