On Wed, Jan 16, 2019 at 10:31:56AM -0800, Matt Roper wrote:
> On Fri, Jan 11, 2019 at 07:08:18PM +0200, Ville Syrjala wrote:
> > From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> >
> > On pre-HSW gamma mode is configured via PIPECONF. The bits are
> > the same except shifted up, so we can reuse just store them in
> > crtc_state->gamma_mode in the HSW+ way, allowing us to share
> > some code later.
> >
> > Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> > ---
> > drivers/gpu/drm/i915/i915_reg.h | 10 ++++-
> > drivers/gpu/drm/i915/intel_color.c | 60 +++++++++++++++++++++-------
> > drivers/gpu/drm/i915/intel_display.c | 14 ++++++-
> > 3 files changed, 66 insertions(+), 18 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> > index 44958d994bfa..9d17ba199be4 100644
> > --- a/drivers/gpu/drm/i915/i915_reg.h
> > +++ b/drivers/gpu/drm/i915/i915_reg.h
> > @@ -5578,9 +5578,15 @@ enum {
> > #define PIPECONF_SINGLE_WIDE 0
> > #define PIPECONF_PIPE_UNLOCKED 0
> > #define PIPECONF_PIPE_LOCKED (1 << 25)
> > -#define PIPECONF_PALETTE 0
> > -#define PIPECONF_GAMMA (1 << 24)
> > #define PIPECONF_FORCE_BORDER (1 << 25)
> > +#define PIPECONF_GAMMA_MODE_MASK_I9XX (1 << 24) /* gmch */
> > +#define PIPECONF_GAMMA_MODE_MASK_ILK (3 << 24) /* ilk-ivb */
> > +#define PIPECONF_GAMMA_MODE_8BIT (0 << 24) /* gmch,ilk-ivb */
> > +#define PIPECONF_GAMMA_MODE_10BIT (1 << 24) /* gmch,ilk-ivb */
> > +#define PIPECONF_GAMMA_MODE_12BIT (2 << 24) /* ilk-ivb */
> > +#define PIPECONF_GAMMA_MODE_SPLIT (3 << 24) /* ivb */
> > +#define PIPECONF_GAMMA_MODE(x) ((x)<<24) /* pass in GAMMA_MODE_MODE_* */
> > +#define PIPECONF_GAMMA_MODE_SHIFT 24
> > #define PIPECONF_INTERLACE_MASK (7 << 21)
> > #define PIPECONF_INTERLACE_MASK_HSW (3 << 21)
> > /* Note that pre-gen3 does not support interlaced display directly. Panel
> > diff --git a/drivers/gpu/drm/i915/intel_color.c b/drivers/gpu/drm/i915/intel_color.c
> > index 0c0da7ed0fd7..6fdbfa8c4008 100644
> > --- a/drivers/gpu/drm/i915/intel_color.c
> > +++ b/drivers/gpu/drm/i915/intel_color.c
> > @@ -351,6 +351,32 @@ static void i9xx_load_luts(const struct intel_crtc_state *crtc_state)
> > i9xx_load_luts_internal(crtc_state, crtc_state->base.gamma_lut);
> > }
> >
> > +static void i9xx_color_commit(const struct intel_crtc_state *crtc_state)
> > +{
> > + struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
> > + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> > + enum pipe pipe = crtc->pipe;
> > + u32 val;
> > +
> > + val = I915_READ(PIPECONF(pipe));
> > + val &= ~PIPECONF_GAMMA_MODE_MASK_I9XX;
> > + val |= PIPECONF_GAMMA_MODE(crtc_state->gamma_mode);
> > + I915_WRITE(PIPECONF(pipe), val);
> > +}
> > +
> > +static void ilk_color_commit(const struct intel_crtc_state *crtc_state)
> > +{
> > + struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
> > + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> > + enum pipe pipe = crtc->pipe;
> > + u32 val;
> > +
> > + val = I915_READ(PIPECONF(pipe));
> > + val &= ~PIPECONF_GAMMA_MODE_MASK_ILK;
> > + val |= PIPECONF_GAMMA_MODE(crtc_state->gamma_mode);
> > + I915_WRITE(PIPECONF(pipe), val);
> > +}
>
> Could we just set color_commit to i9xx_set_pipeconf and
> ironlake_set_pipeconf to handle these without the r-m-w?
Perhaps. But not quite sure if we have any magic restrictions
in the crtc enable sequence that would prevent that.
>
>
> Matt
>
> > +
> > static void hsw_color_commit(const struct intel_crtc_state *crtc_state)
> > {
> > struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
> > @@ -585,8 +611,7 @@ void intel_color_commit(const struct intel_crtc_state *crtc_state)
> > {
> > struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
> >
> > - if (dev_priv->display.color_commit)
> > - dev_priv->display.color_commit(crtc_state);
> > + dev_priv->display.color_commit(crtc_state);
> > }
> >
> > int intel_color_check(struct intel_crtc_state *crtc_state)
> > @@ -634,20 +659,25 @@ void intel_color_init(struct intel_crtc *crtc)
> >
> > drm_mode_crtc_set_gamma_size(&crtc->base, 256);
> >
> > - if (IS_CHERRYVIEW(dev_priv)) {
> > - dev_priv->display.load_luts = cherryview_load_luts;
> > - } else if (IS_HASWELL(dev_priv)) {
> > - dev_priv->display.load_luts = i9xx_load_luts;
> > - dev_priv->display.color_commit = hsw_color_commit;
> > - } else if (IS_BROADWELL(dev_priv) || IS_GEN9_BC(dev_priv) ||
> > - IS_BROXTON(dev_priv)) {
> > - dev_priv->display.load_luts = broadwell_load_luts;
> > - dev_priv->display.color_commit = hsw_color_commit;
> > - } else if (IS_GEMINILAKE(dev_priv) || IS_CANNONLAKE(dev_priv)) {
> > - dev_priv->display.load_luts = glk_load_luts;
> > - dev_priv->display.color_commit = hsw_color_commit;
> > + if (HAS_GMCH_DISPLAY(dev_priv)) {
> > + if (IS_CHERRYVIEW(dev_priv))
> > + dev_priv->display.load_luts = cherryview_load_luts;
> > + else
> > + dev_priv->display.load_luts = i9xx_load_luts;
> > +
> > + dev_priv->display.color_commit = i9xx_color_commit;
> > } else {
> > - dev_priv->display.load_luts = i9xx_load_luts;
> > + if (IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv))
> > + dev_priv->display.load_luts = glk_load_luts;
> > + else if (INTEL_GEN(dev_priv) >= 9 || IS_BROADWELL(dev_priv))
> > + dev_priv->display.load_luts = broadwell_load_luts;
> > + else
> > + dev_priv->display.load_luts = i9xx_load_luts;
> > +
> > + if (INTEL_GEN(dev_priv) >= 8 || IS_HASWELL(dev_priv))
> > + dev_priv->display.color_commit = hsw_color_commit;
> > + else
> > + dev_priv->display.color_commit = ilk_color_commit;
> > }
> >
> > /* Enable color management support when we have degamma & gamma LUTs. */
> > diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> > index 1caee4128974..90afcae91b30 100644
> > --- a/drivers/gpu/drm/i915/intel_display.c
> > +++ b/drivers/gpu/drm/i915/intel_display.c
> > @@ -3415,7 +3415,7 @@ static void i9xx_disable_plane(struct intel_plane *plane,
> > *
> > * On pre-g4x there is no way to gamma correct the
> > * pipe bottom color but we'll keep on doing this
> > - * anyway.
> > + * anyway so that the crtc state readout works correctly.
> > */
> > dspcntr = i9xx_plane_ctl_crtc(crtc_state);
> >
> > @@ -7627,6 +7627,8 @@ static void i9xx_set_pipeconf(const struct intel_crtc_state *crtc_state)
> > crtc_state->limited_color_range)
> > pipeconf |= PIPECONF_COLOR_RANGE_SELECT;
> >
> > + pipeconf |= PIPECONF_GAMMA_MODE(crtc_state->gamma_mode);
> > +
> > I915_WRITE(PIPECONF(crtc->pipe), pipeconf);
> > POSTING_READ(PIPECONF(crtc->pipe));
> > }
> > @@ -8077,6 +8079,9 @@ static bool i9xx_get_pipe_config(struct intel_crtc *crtc,
> > (tmp & PIPECONF_COLOR_RANGE_SELECT))
> > pipe_config->limited_color_range = true;
> >
> > + pipe_config->gamma_mode = (tmp & PIPECONF_GAMMA_MODE_MASK_I9XX) >>
> > + PIPECONF_GAMMA_MODE_SHIFT;
> > +
> > if (INTEL_GEN(dev_priv) < 4)
> > pipe_config->double_wide = tmp & PIPECONF_DOUBLE_WIDE;
> >
> > @@ -8616,6 +8621,8 @@ static void ironlake_set_pipeconf(const struct intel_crtc_state *crtc_state)
> > if (crtc_state->limited_color_range)
> > val |= PIPECONF_COLOR_RANGE_SELECT;
> >
> > + val |= PIPECONF_GAMMA_MODE(crtc_state->gamma_mode);
> > +
> > I915_WRITE(PIPECONF(pipe), val);
> > POSTING_READ(PIPECONF(pipe));
> > }
> > @@ -9147,6 +9154,9 @@ static bool ironlake_get_pipe_config(struct intel_crtc *crtc,
> > if (tmp & PIPECONF_COLOR_RANGE_SELECT)
> > pipe_config->limited_color_range = true;
> >
> > + pipe_config->gamma_mode = (tmp & PIPECONF_GAMMA_MODE_MASK_ILK) >>
> > + PIPECONF_GAMMA_MODE_SHIFT;
> > +
> > if (I915_READ(PCH_TRANSCONF(crtc->pipe)) & TRANS_ENABLE) {
> > struct intel_shared_dpll *pll;
> > enum intel_dpll_id pll_id;
> > @@ -11977,6 +11987,8 @@ intel_pipe_config_compare(struct drm_i915_private *dev_priv,
> >
> > PIPE_CONF_CHECK_BOOL(double_wide);
> >
> > + PIPE_CONF_CHECK_X(gamma_mode);
> > +
> > PIPE_CONF_CHECK_P(shared_dpll);
> > PIPE_CONF_CHECK_X(dpll_hw_state.dpll);
> > PIPE_CONF_CHECK_X(dpll_hw_state.dpll_md);
> > --
> > 2.19.2
> >
>
> --
> Matt Roper
> Graphics Software Engineer
> IoTG Platform Enabling & Development
> Intel Corporation
> (916) 356-2795
--
Ville Syrjälä
Intel
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