From 48205f42ae9bad5783e3cee780ce1a670f5b0f83 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Mon, 24 Oct 2022 19:15:13 +0300 Subject: [PATCH] drm/i915: Get rid of glk_load_degamma_lut_linear() MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Since we now have a place (pre_csc_lut) to stuff a purely internal LUT we can replace glk_load_degamma_lut_linear() with such a thing and just rely on the normal glk_load_degamma_lut() to load it as well. drm_mode_config_cleanup() will clean this up for us. v2: Pass on the error pointer Drop a hint about this into the state dump Reviewed-by: Uma Shankar Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20221024161514.5340-5-ville.syrjala@linux.intel.com --- drivers/gpu/drm/i915/display/intel_color.c | 110 +++++++++++++-------- drivers/gpu/drm/i915/display/intel_color.h | 1 + .../gpu/drm/i915/display/intel_crtc_state_dump.c | 4 +- drivers/gpu/drm/i915/display/intel_display.c | 4 + drivers/gpu/drm/i915/display/intel_display_core.h | 5 + 5 files changed, 82 insertions(+), 42 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c index f1d207e0e1b5..66d9eef92c45 100644 --- a/drivers/gpu/drm/i915/display/intel_color.c +++ b/drivers/gpu/drm/i915/display/intel_color.c @@ -557,6 +557,32 @@ static void skl_color_commit_arm(const struct intel_crtc_state *crtc_state) crtc_state->csc_mode); } +static struct drm_property_blob * +create_linear_lut(struct drm_i915_private *i915, int lut_size) +{ + struct drm_property_blob *blob; + struct drm_color_lut *lut; + int i; + + blob = drm_property_create_blob(&i915->drm, + sizeof(struct drm_color_lut) * lut_size, + NULL); + if (IS_ERR(blob)) + return blob; + + lut = blob->data; + + for (i = 0; i < lut_size; i++) { + u16 val = 0xffff * i / (lut_size - 1); + + lut[i].red = val; + lut[i].green = val; + lut[i].blue = val; + } + + return blob; +} + static void i9xx_load_lut_8(struct intel_crtc *crtc, const struct drm_property_blob *blob) { @@ -871,53 +897,14 @@ static void glk_load_degamma_lut(const struct intel_crtc_state *crtc_state, intel_de_write_fw(dev_priv, PRE_CSC_GAMC_INDEX(pipe), 0); } -static void glk_load_degamma_lut_linear(const struct intel_crtc_state *crtc_state) -{ - struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - enum pipe pipe = crtc->pipe; - int i, lut_size = INTEL_INFO(dev_priv)->display.color.degamma_lut_size; - - /* - * When setting the auto-increment bit, the hardware seems to - * ignore the index bits, so we need to reset it to index 0 - * separately. - */ - intel_de_write_fw(dev_priv, PRE_CSC_GAMC_INDEX(pipe), 0); - intel_de_write_fw(dev_priv, PRE_CSC_GAMC_INDEX(pipe), - PRE_CSC_GAMC_AUTO_INCREMENT); - - for (i = 0; i < lut_size; i++) { - u32 v = (i << 16) / (lut_size - 1); - - intel_de_write_fw(dev_priv, PRE_CSC_GAMC_DATA(pipe), v); - } - - /* Clamp values > 1.0. */ - while (i++ < 35) - intel_de_write_fw(dev_priv, PRE_CSC_GAMC_DATA(pipe), 1 << 16); - - intel_de_write_fw(dev_priv, PRE_CSC_GAMC_INDEX(pipe), 0); -} - static void glk_load_luts(const struct intel_crtc_state *crtc_state) { const struct drm_property_blob *pre_csc_lut = crtc_state->pre_csc_lut; const struct drm_property_blob *post_csc_lut = crtc_state->post_csc_lut; struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); - /* - * On GLK+ both pipe CSC and degamma LUT are controlled - * by csc_enable. Hence for the cases where the CSC is - * needed but degamma LUT is not we need to load a - * linear degamma LUT. In fact we'll just always load - * the degama LUT so that we don't have to reload - * it every time the pipe CSC is being enabled. - */ if (pre_csc_lut) glk_load_degamma_lut(crtc_state, pre_csc_lut); - else - glk_load_degamma_lut_linear(crtc_state); switch (crtc_state->gamma_mode) { case GAMMA_MODE_MODE_8BIT: @@ -1364,11 +1351,17 @@ void intel_color_assert_luts(const struct intel_crtc_state *crtc_state) struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev); /* make sure {pre,post}_csc_lut were correctly assigned */ - if (DISPLAY_VER(i915) >= 10 || HAS_GMCH(i915)) { + if (DISPLAY_VER(i915) >= 11 || HAS_GMCH(i915)) { drm_WARN_ON(&i915->drm, crtc_state->pre_csc_lut != crtc_state->hw.degamma_lut); drm_WARN_ON(&i915->drm, crtc_state->post_csc_lut != crtc_state->hw.gamma_lut); + } else if (DISPLAY_VER(i915) == 10) { + drm_WARN_ON(&i915->drm, + crtc_state->pre_csc_lut != crtc_state->hw.degamma_lut && + crtc_state->pre_csc_lut != i915->display.color.glk_linear_degamma_lut); + drm_WARN_ON(&i915->drm, + crtc_state->post_csc_lut != crtc_state->hw.gamma_lut); } else { drm_WARN_ON(&i915->drm, crtc_state->pre_csc_lut != crtc_state->hw.degamma_lut && @@ -1623,6 +1616,25 @@ static u32 glk_gamma_mode(const struct intel_crtc_state *crtc_state) return GAMMA_MODE_MODE_10BIT; } +static void glk_assign_luts(struct intel_crtc_state *crtc_state) +{ + struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev); + + intel_assign_luts(crtc_state); + + /* + * On GLK+ both pipe CSC and degamma LUT are controlled + * by csc_enable. Hence for the cases where the CSC is + * needed but degamma LUT is not we need to load a + * linear degamma LUT. In fact we'll just always load + * the degama LUT so that we don't have to reload + * it every time the pipe CSC is being enabled. + */ + if (!crtc_state->pre_csc_lut) + drm_property_replace_blob(&crtc_state->pre_csc_lut, + i915->display.color.glk_linear_degamma_lut); +} + static int glk_color_check(struct intel_crtc_state *crtc_state) { struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); @@ -1657,7 +1669,7 @@ static int glk_color_check(struct intel_crtc_state *crtc_state) if (ret) return ret; - intel_assign_luts(crtc_state); + glk_assign_luts(crtc_state); crtc_state->preload_luts = glk_can_preload_luts(crtc_state); @@ -2287,6 +2299,22 @@ void intel_color_crtc_init(struct intel_crtc *crtc) INTEL_INFO(dev_priv)->display.color.gamma_lut_size); } +int intel_color_init(struct drm_i915_private *i915) +{ + struct drm_property_blob *blob; + + if (DISPLAY_VER(i915) != 10) + return 0; + + blob = create_linear_lut(i915, INTEL_INFO(i915)->display.color.degamma_lut_size); + if (IS_ERR(blob)) + return PTR_ERR(blob); + + i915->display.color.glk_linear_degamma_lut = blob; + + return 0; +} + void intel_color_init_hooks(struct drm_i915_private *i915) { if (HAS_GMCH(i915)) { diff --git a/drivers/gpu/drm/i915/display/intel_color.h b/drivers/gpu/drm/i915/display/intel_color.h index e1d423922f98..2a5ada67774d 100644 --- a/drivers/gpu/drm/i915/display/intel_color.h +++ b/drivers/gpu/drm/i915/display/intel_color.h @@ -14,6 +14,7 @@ struct drm_i915_private; struct drm_property_blob; void intel_color_init_hooks(struct drm_i915_private *i915); +int intel_color_init(struct drm_i915_private *i915); void intel_color_crtc_init(struct intel_crtc *crtc); int intel_color_check(struct intel_crtc_state *crtc_state); void intel_color_commit_noarm(const struct intel_crtc_state *crtc_state); diff --git a/drivers/gpu/drm/i915/display/intel_crtc_state_dump.c b/drivers/gpu/drm/i915/display/intel_crtc_state_dump.c index 98e36ab55e9e..e3273fe8ddac 100644 --- a/drivers/gpu/drm/i915/display/intel_crtc_state_dump.c +++ b/drivers/gpu/drm/i915/display/intel_crtc_state_dump.c @@ -298,7 +298,9 @@ void intel_crtc_state_dump(const struct intel_crtc_state *pipe_config, pipe_config->csc_mode, pipe_config->gamma_mode, pipe_config->gamma_enable, pipe_config->csc_enable); - drm_dbg_kms(&i915->drm, "pre csc lut: %d entries, post csc lut: %d entries\n", + drm_dbg_kms(&i915->drm, "pre csc lut: %s%d entries, post csc lut: %d entries\n", + pipe_config->pre_csc_lut && pipe_config->pre_csc_lut == + i915->display.color.glk_linear_degamma_lut ? "(linear) " : "", pipe_config->pre_csc_lut ? drm_color_lut_size(pipe_config->pre_csc_lut) : 0, pipe_config->post_csc_lut ? diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 1572a58df322..0691b49f38f1 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -8658,6 +8658,10 @@ int intel_modeset_init_noirq(struct drm_i915_private *i915) if (ret) goto cleanup_vga_client_pw_domain_dmc; + ret = intel_color_init(i915); + if (ret) + goto cleanup_vga_client_pw_domain_dmc; + ret = intel_dbuf_init(i915); if (ret) goto cleanup_vga_client_pw_domain_dmc; diff --git a/drivers/gpu/drm/i915/display/intel_display_core.h b/drivers/gpu/drm/i915/display/intel_display_core.h index 96cf994b0ad1..b4b9c4cef78e 100644 --- a/drivers/gpu/drm/i915/display/intel_display_core.h +++ b/drivers/gpu/drm/i915/display/intel_display_core.h @@ -28,6 +28,7 @@ struct drm_i915_private; struct drm_property; +struct drm_property_blob; struct i915_audio_component; struct i915_hdcp_comp_master; struct intel_atomic_state; @@ -309,6 +310,10 @@ struct intel_display { } cdclk; struct { + struct drm_property_blob *glk_linear_degamma_lut; + } color; + + struct { /* The current hardware dbuf configuration */ u8 enabled_slices; -- 2.11.0