On Fri, 06 Sep 2019, Swati Sharma <swati2.sharma@xxxxxxxxx> wrote: > For cherryview, add hw read out to create hw blob of gamma > lut values. > > Review comments from previous series: > https://patchwork.freedesktop.org/patch/328252 > > v4: -No need to initialize *blob [Jani] > -Removed right shifts [Jani] > -Dropped dev local var [Jani] > v5: -Returned blob instead of assigning it internally within the > function [Ville] > -Renamed function cherryview_get_color_config() to chv_read_luts() > -Renamed cherryview_get_gamma_config() to chv_read_cgm_gamma_lut() > [Ville] > v9: -80 character limit [Uma] > -Made read func para as const [Ville, Uma] > -Renamed chv_read_cgm_gamma_lut() to chv_read_cgm_gamma_lut() > [Ville, Uma] > > Signed-off-by: Swati Sharma <swati2.sharma@xxxxxxxxx> Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx> > --- > drivers/gpu/drm/i915/display/intel_color.c | 43 ++++++++++++++++++++++++++++++ > drivers/gpu/drm/i915/i915_reg.h | 3 +++ > 2 files changed, 46 insertions(+) > > diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c > index 17199a1..4473b54 100644 > --- a/drivers/gpu/drm/i915/display/intel_color.c > +++ b/drivers/gpu/drm/i915/display/intel_color.c > @@ -1612,6 +1612,48 @@ static void i965_read_luts(struct intel_crtc_state *crtc_state) > } > > static struct drm_property_blob * > +chv_read_cgm_lut(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); > + u32 lut_size = INTEL_INFO(dev_priv)->color.gamma_lut_size; > + enum pipe pipe = crtc->pipe; > + struct drm_property_blob *blob; > + struct drm_color_lut *blob_data; > + u32 i, val; > + > + blob = drm_property_create_blob(&dev_priv->drm, > + sizeof(struct drm_color_lut) * lut_size, > + NULL); > + if (IS_ERR(blob)) > + return NULL; > + > + blob_data = blob->data; > + > + for (i = 0; i < lut_size; i++) { > + val = I915_READ(CGM_PIPE_GAMMA(pipe, i, 0)); > + blob_data[i].green = intel_color_lut_pack(REG_FIELD_GET( > + CGM_PIPE_GAMMA_GREEN_MASK, val), 10); > + blob_data[i].blue = intel_color_lut_pack(REG_FIELD_GET( > + CGM_PIPE_GAMMA_BLUE_MASK, val), 10); > + > + val = I915_READ(CGM_PIPE_GAMMA(pipe, i, 1)); > + blob_data[i].red = intel_color_lut_pack(REG_FIELD_GET( > + CGM_PIPE_GAMMA_RED_MASK, val), 10); > + } > + > + return blob; > +} > + > +static void chv_read_luts(struct intel_crtc_state *crtc_state) > +{ > + if (crtc_state->gamma_mode == GAMMA_MODE_MODE_8BIT) > + crtc_state->base.gamma_lut = i9xx_read_lut_8(crtc_state); > + else > + crtc_state->base.gamma_lut = chv_read_cgm_lut(crtc_state); > +} > + > +static struct drm_property_blob * > ilk_read_lut_10(const struct intel_crtc_state *crtc_state) > { > struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc); > @@ -1710,6 +1752,7 @@ void intel_color_init(struct intel_crtc *crtc) > dev_priv->display.color_check = chv_color_check; > dev_priv->display.color_commit = i9xx_color_commit; > dev_priv->display.load_luts = chv_load_luts; > + dev_priv->display.read_luts = chv_read_luts; > } else if (INTEL_GEN(dev_priv) >= 4) { > dev_priv->display.color_check = i9xx_color_check; > dev_priv->display.color_commit = i9xx_color_commit; > diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h > index 1e58c6d..6ec56b1 100644 > --- a/drivers/gpu/drm/i915/i915_reg.h > +++ b/drivers/gpu/drm/i915/i915_reg.h > @@ -10409,6 +10409,9 @@ enum skl_power_gate { > #define CGM_PIPE_MODE_GAMMA (1 << 2) > #define CGM_PIPE_MODE_CSC (1 << 1) > #define CGM_PIPE_MODE_DEGAMMA (1 << 0) > +#define CGM_PIPE_GAMMA_RED_MASK REG_GENMASK(9, 0) > +#define CGM_PIPE_GAMMA_GREEN_MASK REG_GENMASK(25, 16) > +#define CGM_PIPE_GAMMA_BLUE_MASK REG_GENMASK(9, 0) > > #define _CGM_PIPE_B_CSC_COEFF01 (VLV_DISPLAY_BASE + 0x69900) > #define _CGM_PIPE_B_CSC_COEFF23 (VLV_DISPLAY_BASE + 0x69904) -- Jani Nikula, Intel Open Source Graphics Center _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
