> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Ville
> Syrjala
> Sent: Saturday, July 18, 2020 2:44 AM
> To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Subject: [PATCH 16/20] drm/i915: Make ilk_read_luts() capable of
> degamma readout
>
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
>
> Just like ivb+, ilk/snb can select whether the hw lut acts as gamma or degamma.
> Make the readout cognizant of that fact.
Reviewed-by: Uma Shankar <uma.shankar@xxxxxxxxx>
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/display/intel_color.c | 10 +++++-----
> 1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_color.c
> b/drivers/gpu/drm/i915/display/intel_color.c
> index 12a41fb4a98c..7f9e26419b56 100644
> --- a/drivers/gpu/drm/i915/display/intel_color.c
> +++ b/drivers/gpu/drm/i915/display/intel_color.c
> @@ -1977,19 +1977,19 @@ static struct drm_property_blob
> *ilk_read_lut_10(struct intel_crtc *crtc) static void ilk_read_luts(struct
> intel_crtc_state *crtc_state) {
> struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
> + struct drm_property_blob **blob =
> + crtc_state->csc_mode & CSC_POSITION_BEFORE_GAMMA ?
> + &crtc_state->hw.gamma_lut : &crtc_state->hw.degamma_lut;
>
> if (!crtc_state->gamma_enable)
> return;
>
> - if ((crtc_state->csc_mode & CSC_POSITION_BEFORE_GAMMA) == 0)
> - return;
> -
> switch (crtc_state->gamma_mode) {
> case GAMMA_MODE_MODE_8BIT:
> - crtc_state->hw.gamma_lut = ilk_read_lut_8(crtc);
> + *blob = ilk_read_lut_8(crtc);
> break;
> case GAMMA_MODE_MODE_10BIT:
> - crtc_state->hw.gamma_lut = ilk_read_lut_10(crtc);
> + *blob = ilk_read_lut_10(crtc);
> break;
> default:
> MISSING_CASE(crtc_state->gamma_mode);
> --
> 2.26.2
>
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