From: Ville Syrjälä Date: Mon, 1 Apr 2019 20:02:28 +0000 (+0300) Subject: drm/i915: Add 10bit LUT for ilk/snb X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=514462caf757700541e9d91adede9ea0eea1c6ad;p=openwrt%2Fstaging%2Fblogic.git drm/i915: Add 10bit LUT for ilk/snb Plop in support for 10bit LUT on ilk/snb. There is no split gamma mode on these platforms, so we have to choose between degamma and gamma. That could be a runtime choice but for now let's just advertize the gamma as having 1024 entries. We'll also keep the ctm hidden for now. v2: Don't use I915_WRITE_FW() yet Introduce bool has_ctm (Maarten) Call drm_crtc_enable_color_mgmt() uncoditionally (Maarten) Reviewed-by: Matt Roper Reviewed-by: Maarten Lankhorst Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20190401200231.2333-5-ville.syrjala@linux.intel.com Reviewed-by: Uma Shankar --- diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c index 2b0d2f4f8a46..cbcfe1a5de9a 100644 --- a/drivers/gpu/drm/i915/i915_pci.c +++ b/drivers/gpu/drm/i915/i915_pci.c @@ -116,6 +116,8 @@ [PIPE_C] = IVB_CURSOR_C_OFFSET, \ } +#define ILK_COLORS \ + .color = { .gamma_lut_size = 1024 } #define IVB_COLORS \ .color = { .degamma_lut_size = 512, .gamma_lut_size = 512 } #define CHV_COLORS \ @@ -332,6 +334,7 @@ static const struct intel_device_info intel_gm45_info = { .has_rc6 = 0, \ I9XX_PIPE_OFFSETS, \ I9XX_CURSOR_OFFSETS, \ + ILK_COLORS, \ GEN_DEFAULT_PAGE_SIZES static const struct intel_device_info intel_ironlake_d_info = { @@ -360,6 +363,7 @@ static const struct intel_device_info intel_ironlake_m_info = { .ppgtt_size = 31, \ I9XX_PIPE_OFFSETS, \ I9XX_CURSOR_OFFSETS, \ + ILK_COLORS, \ GEN_DEFAULT_PAGE_SIZES #define SNB_D_PLATFORM \ diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index bed2c52aebd8..d9b2bd226e57 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -7209,6 +7209,15 @@ enum { #define _LGC_PALETTE_B 0x4a800 #define LGC_PALETTE(pipe, i) _MMIO(_PIPE(pipe, _LGC_PALETTE_A, _LGC_PALETTE_B) + (i) * 4) +/* ilk/snb precision palette */ +#define _PREC_PALETTE_A 0x4b000 +#define _PREC_PALETTE_B 0x4c000 +#define PREC_PALETTE(pipe, i) _MMIO(_PIPE(pipe, _PREC_PALETTE_A, _PREC_PALETTE_B) + (i) * 4) + +#define _PREC_PIPEAGCMAX 0x4d000 +#define _PREC_PIPEBGCMAX 0x4d010 +#define PREC_PIPEGCMAX(pipe, i) _MMIO(_PIPE(pipe, _PIPEAGCMAX, _PIPEBGCMAX) + (i) * 4) + #define _GAMMA_MODE_A 0x4a480 #define _GAMMA_MODE_B 0x4ac80 #define GAMMA_MODE(pipe) _MMIO_PIPE(pipe, _GAMMA_MODE_A, _GAMMA_MODE_B) diff --git a/drivers/gpu/drm/i915/intel_color.c b/drivers/gpu/drm/i915/intel_color.c index cf830c3ba325..06c4012ec16b 100644 --- a/drivers/gpu/drm/i915/intel_color.c +++ b/drivers/gpu/drm/i915/intel_color.c @@ -468,6 +468,29 @@ static void skl_color_commit(const struct intel_crtc_state *crtc_state) ilk_load_csc_matrix(crtc_state); } +static void ilk_load_lut_10(struct intel_crtc *crtc, + const struct drm_property_blob *blob) +{ + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); + const struct drm_color_lut *lut = blob->data; + int i, lut_size = drm_color_lut_size(blob); + enum pipe pipe = crtc->pipe; + + for (i = 0; i < lut_size; i++) + I915_WRITE(PREC_PALETTE(pipe, i), ilk_lut_10(&lut[i])); +} + +static void ilk_load_luts(const struct intel_crtc_state *crtc_state) +{ + struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc); + const struct drm_property_blob *gamma_lut = crtc_state->base.gamma_lut; + + if (crtc_state->gamma_mode == GAMMA_MODE_MODE_8BIT) + i9xx_load_luts(crtc_state); + else + ilk_load_lut_10(crtc, gamma_lut); +} + /* * IVB/HSW Bspec / PAL_PREC_INDEX: * "Restriction : Index auto increment mode is not @@ -967,6 +990,15 @@ static int chv_color_check(struct intel_crtc_state *crtc_state) return 0; } +static u32 ilk_gamma_mode(const struct intel_crtc_state *crtc_state) +{ + if (!crtc_state->gamma_enable || + crtc_state_is_legacy_gamma(crtc_state)) + return GAMMA_MODE_MODE_8BIT; + else + return GAMMA_MODE_MODE_10BIT; +} + static int ilk_color_check(struct intel_crtc_state *crtc_state) { int ret; @@ -986,8 +1018,7 @@ static int ilk_color_check(struct intel_crtc_state *crtc_state) */ crtc_state->csc_enable = false; - /* We don't expose fancy gamma modes on ilk/snb currently */ - crtc_state->gamma_mode = GAMMA_MODE_MODE_8BIT; + crtc_state->gamma_mode = ilk_gamma_mode(crtc_state); crtc_state->csc_mode = 0; @@ -1145,6 +1176,7 @@ static int icl_color_check(struct intel_crtc_state *crtc_state) void intel_color_init(struct intel_crtc *crtc) { struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); + bool has_ctm = INTEL_INFO(dev_priv)->color.degamma_lut_size != 0; drm_mode_crtc_set_gamma_size(&crtc->base, 256); @@ -1184,14 +1216,11 @@ void intel_color_init(struct intel_crtc *crtc) else if (INTEL_GEN(dev_priv) >= 7) dev_priv->display.load_luts = ivb_load_luts; else - dev_priv->display.load_luts = i9xx_load_luts; + dev_priv->display.load_luts = ilk_load_luts; } - /* Enable color management support when we have degamma & gamma LUTs. */ - if (INTEL_INFO(dev_priv)->color.degamma_lut_size != 0 && - INTEL_INFO(dev_priv)->color.gamma_lut_size != 0) - drm_crtc_enable_color_mgmt(&crtc->base, - INTEL_INFO(dev_priv)->color.degamma_lut_size, - true, - INTEL_INFO(dev_priv)->color.gamma_lut_size); + drm_crtc_enable_color_mgmt(&crtc->base, + INTEL_INFO(dev_priv)->color.degamma_lut_size, + has_ctm, + INTEL_INFO(dev_priv)->color.gamma_lut_size); }