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> --- 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) -- 1.9.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
