On Wed, Mar 20, 2019 at 03:49:31PM -0700, Matt Roper wrote:
> On Mon, Mar 18, 2019 at 06:13:15PM +0200, Ville Syrjala wrote:
> > From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> >
> > With everything else moved out of the way only ilk+
> > remains using _intel_color_check(). Streamline the logic
> > into ilk_color_check().
> >
> > Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> > ---
> > drivers/gpu/drm/i915/intel_color.c | 70 ++++++++++++------------------
> > 1 file changed, 27 insertions(+), 43 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/intel_color.c b/drivers/gpu/drm/i915/intel_color.c
> > index 6507e5f79c06..8c5c66f5d100 100644
> > --- a/drivers/gpu/drm/i915/intel_color.c
> > +++ b/drivers/gpu/drm/i915/intel_color.c
> > @@ -871,6 +871,32 @@ static int chv_color_check(struct intel_crtc_state *crtc_state)
> > return 0;
> > }
> >
> > +static int ilk_color_check(struct intel_crtc_state *crtc_state)
>
> Since it confused me at first, you might want to add a comment on this
> function that we don't expose color management properties to userspace
> on any platforms that use this function. So the only gamma we can wind
> up with is legacy (via ioctl) and the only CSC usage possible is our own
> internal limited range conversion.
Sure. I have patches already typed up to change that though ;)
>
> > +{
> > + int ret;
> > +
> > + ret = check_luts(crtc_state);
> > + if (ret)
> > + return ret;
>
> Do we need to call this? There's never a degamma LUT for these
> platforms, and I think the only gamma LUT we'll ever encounter comes
> from the legacy gamma ioctl which has already checked that it's a valid
> legacy table.
We'll need to do the c8 vs. legacy LUT check.
>
>
> Matt
>
> > +
> > + crtc_state->gamma_enable =
> > + crtc_state->base.gamma_lut &&
> > + !crtc_state->c8_planes;
> > +
> > + crtc_state->csc_enable =
> > + ilk_csc_limited_range(crtc_state);
> > +
> > + crtc_state->gamma_mode = GAMMA_MODE_MODE_8BIT;
> > +
> > + crtc_state->csc_mode = 0;
> > +
> > + ret = intel_color_add_affected_planes(crtc_state);
> > + if (ret)
> > + return ret;
> > +
> > + return 0;
> > +}
> > +
> > static u32 bdw_gamma_mode(const struct intel_crtc_state *crtc_state)
> > {
> > if (!crtc_state->gamma_enable ||
> > @@ -995,48 +1021,6 @@ static int icl_color_check(struct intel_crtc_state *crtc_state)
> > return 0;
> > }
> >
> > -static int _intel_color_check(struct intel_crtc_state *crtc_state)
> > -{
> > - struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
> > - const struct drm_property_blob *gamma_lut = crtc_state->base.gamma_lut;
> > - const struct drm_property_blob *degamma_lut = crtc_state->base.degamma_lut;
> > - bool limited_color_range = false;
> > - int ret;
> > -
> > - ret = check_luts(crtc_state);
> > - if (ret)
> > - return ret;
> > -
> > - crtc_state->gamma_enable = (gamma_lut || degamma_lut) &&
> > - !crtc_state->c8_planes;
> > -
> > - if (INTEL_GEN(dev_priv) >= 9 ||
> > - IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv))
> > - limited_color_range = crtc_state->limited_color_range;
> > -
> > - crtc_state->csc_enable =
> > - crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB ||
> > - crtc_state->base.ctm || limited_color_range;
> > -
> > - ret = intel_color_add_affected_planes(crtc_state);
> > - if (ret)
> > - return ret;
> > -
> > - crtc_state->csc_mode = 0;
> > -
> > - if (!crtc_state->gamma_enable ||
> > - crtc_state_is_legacy_gamma(crtc_state))
> > - crtc_state->gamma_mode = GAMMA_MODE_MODE_8BIT;
> > - else if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv))
> > - crtc_state->gamma_mode = GAMMA_MODE_MODE_10BIT;
> > - else if (INTEL_GEN(dev_priv) >= 9 || IS_BROADWELL(dev_priv))
> > - crtc_state->gamma_mode = GAMMA_MODE_MODE_SPLIT;
> > - else
> > - crtc_state->gamma_mode = GAMMA_MODE_MODE_8BIT;
> > -
> > - return 0;
> > -}
> > -
> > void intel_color_init(struct intel_crtc *crtc)
> > {
> > struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> > @@ -1077,7 +1061,7 @@ void intel_color_init(struct intel_crtc *crtc)
> > else if (INTEL_GEN(dev_priv) >= 8)
> > dev_priv->display.color_check = bdw_color_check;
> > else
> > - dev_priv->display.color_check = _intel_color_check;
> > + dev_priv->display.color_check = ilk_color_check;
> > }
> >
> > /* Enable color management support when we have degamma & gamma LUTs. */
> > --
> > 2.19.2
> >
>
> --
> Matt Roper
> Graphics Software Engineer
> IoTG Platform Enabling & Development
> Intel Corporation
> (916) 356-2795
--
Ville Syrjälä
Intel
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