>-----Original Message----- >From: Ville Syrjälä [mailto:ville.syrjala@xxxxxxxxxxxxxxx] >Sent: Thursday, November 1, 2018 3:21 PM >To: Shankar, Uma <uma.shankar@xxxxxxxxx> >Cc: intel-gfx@xxxxxxxxxxxxxxxxxxxxx; Syrjala, Ville <ville.syrjala@xxxxxxxxx>; >Lankhorst, Maarten <maarten.lankhorst@xxxxxxxxx> >Subject: Re: [v7 2/2] drm/i915/icl: Enable Plane Input CSC for YUV to >RGB Conversion > >On Thu, Nov 01, 2018 at 01:49:01PM +0530, Uma Shankar wrote: >> Plane input CSC needs to be enabled to convert frambuffers from YUV to >> RGB. This is needed for bottom 3 planes on ICL, rest of the planes >> have hardcoded conversion and taken care by the legacy code. >> >> This patch defines the co-efficient values for YUV to RGB conversion >> in BT709 and BT601 formats. It programs the coefficients and enables >> the plane input csc unit in hardware. >> >> This has been verified and tested by Maarten and the change is working >> as expecpted. >> >> v2: Addressed Maarten's and Ville's review comments and added the >> coefficients in a 2D array instead of independent Macros. >> >> v3: Added individual coefficient matrix (9 values) instead of 6 >> register values as per Maarten's comment. Also addresed a shift issue >> with B channel coefficient. >> >> v4: Added support for Limited Range Color Handling >> >> v5: Fixed Matt and Maarten's review comments. >> >> v6: Added human readable matrix values for YUV to RGB Conversion along >> with just the bspec register values, as per Matt's suggestion. >> >> v7: Refactored the code, move csc coefficient programming function to >> intel_sprite.c and made it static as per Ville's review comment. >> >> Signed-off-by: Uma Shankar <uma.shankar@xxxxxxxxx> >> Reviewed-by: Matt Roper <matthew.d.roper@xxxxxxxxx> >> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx> >> >> --- >> drivers/gpu/drm/i915/intel_display.c | 17 +++++-- >> drivers/gpu/drm/i915/intel_sprite.c | 99 >++++++++++++++++++++++++++++++++++++ >> include/drm/drm_color_mgmt.h | 9 ++++ >> 3 files changed, 120 insertions(+), 5 deletions(-) >> >> diff --git a/drivers/gpu/drm/i915/intel_display.c >> b/drivers/gpu/drm/i915/intel_display.c >> index fe045ab..daec1fd 100644 >> --- a/drivers/gpu/drm/i915/intel_display.c >> +++ b/drivers/gpu/drm/i915/intel_display.c >> @@ -3666,6 +3666,7 @@ u32 glk_plane_color_ctl(const struct intel_crtc_state >*crtc_state, >> struct drm_i915_private *dev_priv = >> to_i915(plane_state->base.plane->dev); >> const struct drm_framebuffer *fb = plane_state->base.fb; >> + struct intel_plane *plane = to_intel_plane(plane_state->base.plane); >> u32 plane_color_ctl = 0; >> >> if (INTEL_GEN(dev_priv) < 11) { >> @@ -3675,14 +3676,20 @@ u32 glk_plane_color_ctl(const struct >intel_crtc_state *crtc_state, >> plane_color_ctl |= PLANE_COLOR_PLANE_GAMMA_DISABLE; >> plane_color_ctl |= glk_plane_color_ctl_alpha(plane_state); >> >> - if (fb->format->is_yuv) { >> - if (plane_state->base.color_encoding == >DRM_COLOR_YCBCR_BT709) >> - plane_color_ctl |= >PLANE_COLOR_CSC_MODE_YUV709_TO_RGB709; >> + if (fb->format->is_yuv && !icl_is_hdr_plane(plane)) { >> + if (plane_state->base.color_encoding == >> + DRM_COLOR_YCBCR_BT709) >> + plane_color_ctl |= >> + > PLANE_COLOR_CSC_MODE_YUV709_TO_RGB709; >> else >> - plane_color_ctl |= >PLANE_COLOR_CSC_MODE_YUV601_TO_RGB709; >> + plane_color_ctl |= >> + > PLANE_COLOR_CSC_MODE_YUV601_TO_RGB709; >> >> if (plane_state->base.color_range == >DRM_COLOR_YCBCR_FULL_RANGE) >> - plane_color_ctl |= >PLANE_COLOR_YUV_RANGE_CORRECTION_DISABLE; >> + plane_color_ctl |= >> + PLANE_COLOR_YUV_RANGE_CORRECTION_DISABLE; >> + } else if (fb->format->is_yuv) { >> + plane_color_ctl |= PLANE_COLOR_INPUT_CSC_ENABLE; >> } >> >> return plane_color_ctl; >> diff --git a/drivers/gpu/drm/i915/intel_sprite.c >> b/drivers/gpu/drm/i915/intel_sprite.c >> index c604f6b..711502455 100644 >> --- a/drivers/gpu/drm/i915/intel_sprite.c >> +++ b/drivers/gpu/drm/i915/intel_sprite.c >> @@ -40,6 +40,7 @@ >> #include "intel_frontbuffer.h" >> #include <drm/i915_drm.h> >> #include "i915_drv.h" >> +#include <drm/drm_color_mgmt.h> >> >> int intel_usecs_to_scanlines(const struct drm_display_mode *adjusted_mode, >> int usecs) >> @@ -458,11 +459,106 @@ int intel_plane_check_src_coordinates(struct >intel_plane_state *plane_state) >> spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); } >> >> +static void >> +icl_program_input_csc_coeff(const struct intel_crtc_state *crtc_state, >> + const struct intel_plane_state *plane_state) { >> + struct drm_i915_private *dev_priv = >> + to_i915(plane_state->base.plane->dev); >> + struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc); >> + enum pipe pipe = crtc->pipe; >> + struct intel_plane *intel_plane = >> + to_intel_plane(plane_state->base.plane); >> + enum plane_id plane = intel_plane->id; >> + >> + static const u16 input_csc_matrix[][9] = { >> + /* >> + * BT.601 full range YCbCr -> full range RGB >> + * The matrix required is : >> + * [1.000, 0.000, 1.371, >> + * 1.000, -0.336, -0.698, >> + * 1.000, 1.732, 0.0000] >> + */ >> + [DRM_COLOR_YCBCR_BT601] = { >> + 0x7AF8, 0x7800, 0x0, >> + 0x8B28, 0x7800, 0x9AC0, >> + 0x0, 0x7800, 0x7DD8, >> + }, >> + /* >> + * BT.709 full range YCbCr -> full range RGB >> + * The matrix required is : >> + * [1.000, 0.000, 1.574, >> + * 1.000, -0.187, -0.468, >> + * 1.000, 1.855, 0.0000] >> + */ >> + [DRM_COLOR_YCBCR_BT709] = { >> + 0x7C98, 0x7800, 0x0, >> + 0x9EF8, 0x7800, 0xABF8, >> + 0x0, 0x7800, 0x7ED8, >> + }, >> + }; >> + >> + /* Matrix for Limited Range to Full Range Conversion */ >> + static const u16 input_csc_matrix_lr[][9] = { >> + /* >> + * BT.601 Limted range YCbCr -> full range RGB >> + * The matrix required is : >> + * [1.164384, 0.000, 1.596370, >> + * 1.138393, -0.382500, -0.794598, >> + * 1.138393, 1.971696, 0.0000] >> + */ >> + [DRM_COLOR_YCBCR_BT601] = { >> + 0x7CC8, 0x7950, 0x0, >> + 0x8CB8, 0x7918, 0x9C40, >> + 0x0, 0x7918, 0x7FC8, >> + }, >> + /* >> + * BT.709 Limited range YCbCr -> full range RGB >> + * The matrix required is : >> + * [1.164, 0.000, 1.833671, >> + * 1.138393, -0.213249, -0.532909, >> + * 1.138393, 2.112402, 0.0000] >> + */ >> + [DRM_COLOR_YCBCR_BT709] = { >> + 0x7EA8, 0x7950, 0x0, >> + 0x8888, 0x7918, 0xADA8, >> + 0x0, 0x7918, 0x6870, >> + }, >> + }; >> + const u16 *csc; >> + >> + if (plane_state->base.color_range == >DRM_COLOR_YCBCR_FULL_RANGE) >> + csc = input_csc_matrix[plane_state->base.color_encoding]; >> + else >> + csc = input_csc_matrix_lr[plane_state->base.color_encoding]; >> + >> + I915_WRITE(PLANE_INPUT_CSC_COEFF(pipe, plane, 0), ROFF(csc[0]) | >> + GOFF(csc[1])); >> + I915_WRITE(PLANE_INPUT_CSC_COEFF(pipe, plane, 1), BOFF(csc[2])); >> + I915_WRITE(PLANE_INPUT_CSC_COEFF(pipe, plane, 2), ROFF(csc[3]) | >> + GOFF(csc[4])); >> + I915_WRITE(PLANE_INPUT_CSC_COEFF(pipe, plane, 3), BOFF(csc[5])); >> + I915_WRITE(PLANE_INPUT_CSC_COEFF(pipe, plane, 4), ROFF(csc[6]) | >> + GOFF(csc[7])); >> + I915_WRITE(PLANE_INPUT_CSC_COEFF(pipe, plane, 5), BOFF(csc[8])); >> + >> + I915_WRITE(PLANE_INPUT_CSC_PREOFF(pipe, plane, 0), >> + PREOFF_YUV_TO_RGB_HI); >> + I915_WRITE(PLANE_INPUT_CSC_PREOFF(pipe, plane, 1), >> + PREOFF_YUV_TO_RGB_ME); >> + I915_WRITE(PLANE_INPUT_CSC_PREOFF(pipe, plane, 2), >> + PREOFF_YUV_TO_RGB_LO); >> + I915_WRITE(PLANE_INPUT_CSC_POSTOFF(pipe, plane, 0), 0x0); >> + I915_WRITE(PLANE_INPUT_CSC_POSTOFF(pipe, plane, 1), 0x0); >> + I915_WRITE(PLANE_INPUT_CSC_POSTOFF(pipe, plane, 2), 0x0); } >> + >> void >> skl_update_plane(struct intel_plane *plane, >> const struct intel_crtc_state *crtc_state, >> const struct intel_plane_state *plane_state) { >> + const struct drm_framebuffer *fb = plane_state->base.fb; >> int color_plane = 0; >> >> if (plane_state->linked_plane) { >> @@ -470,6 +566,9 @@ int intel_plane_check_src_coordinates(struct >intel_plane_state *plane_state) >> color_plane = 1; >> } >> >> + if (fb->format->is_yuv && icl_is_hdr_plane(plane)) >> + icl_program_input_csc_coeff(crtc_state, plane_state); >> + >> skl_program_plane(plane, crtc_state, plane_state, >> color_plane, false, plane_state->ctl); } diff --git >> a/include/drm/drm_color_mgmt.h b/include/drm/drm_color_mgmt.h index >> 90ef999..3e17381 100644 >> --- a/include/drm/drm_color_mgmt.h >> +++ b/include/drm/drm_color_mgmt.h >> @@ -29,6 +29,15 @@ >> struct drm_crtc; >> struct drm_plane; >> >> +/* Preoffset values for YUV to RGB Conversion */ >> +#define PREOFF_YUV_TO_RGB_HI 0x1800 >> +#define PREOFF_YUV_TO_RGB_ME 0x1F00 >> +#define PREOFF_YUV_TO_RGB_LO 0x1800 > >Why are these here when all the other numbers are in >icl_program_input_csc_coeff()? I'd rather just put everything into >icl_program_input_csc_coeff(). Sure, will move this around. Thanks.. Regards, Uma Shankar >> + >> +#define ROFF(x) (((x) & 0xffff) << 16) >> +#define GOFF(x) (((x) & 0xffff) << 0) >> +#define BOFF(x) (((x) & 0xffff) << 16) >> + >> uint32_t drm_color_lut_extract(uint32_t user_input, uint32_t >> bit_precision); >> >> void drm_crtc_enable_color_mgmt(struct drm_crtc *crtc, >> -- >> 1.9.1 >> >> _______________________________________________ >> Intel-gfx mailing list >> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx >> https://lists.freedesktop.org/mailman/listinfo/intel-gfx > >-- >Ville Syrjälä >Intel _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
