drm/i915/dsc: Add helper for writing DSC Selective Update ET parameters

mirror of https://github.com/openbsd/src.git synced 2026-06-18 07:13:36 +02:00

From Jouni Hogander
a5cdbbc77147047219e7f35da4c778d30778e754 in linux-6.18.y/6.18.20
bb5f1cd10101c2567bff4d0e760b74aee7c42f44 in mainline linux

This commit is contained in:

jsg

2026-03-25 23:09:56 +00:00

parent 8500e6a1b0

commit 3e149d2cd1

2 changed files with 26 additions and 0 deletions

									
										sys/dev/pci/drm/i915/display/intel_vdsc.c
									
		+23
		
												View File
												
				@@ -751,6 +751,29 @@ void intel_dsc_dp_pps_write(struct intel_encoder *encoder,

								  sizeof(dp_dsc_pps_sdp));

				}

				void intel_dsc_su_et_parameters_configure(struct intel_dsb *dsb, struct intel_encoder *encoder,

									  const struct intel_crtc_state *crtc_state, int su_lines)

				{

					struct intel_display *display = to_intel_display(crtc_state);

					struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);

					const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;

					enum pipe pipe = crtc->pipe;

					int vdsc_instances_per_pipe = intel_dsc_get_vdsc_per_pipe(crtc_state);

					int slice_row_per_frame = su_lines / vdsc_cfg->slice_height;

					u32 val;

					drm_WARN_ON_ONCE(display->drm, su_lines % vdsc_cfg->slice_height);

					drm_WARN_ON_ONCE(display->drm, vdsc_instances_per_pipe > 2);

					val = DSC_SUPS0_SU_SLICE_ROW_PER_FRAME(slice_row_per_frame);

					val |= DSC_SUPS0_SU_PIC_HEIGHT(su_lines);

					intel_de_write_dsb(display, dsb, LNL_DSC0_SU_PARAMETER_SET_0(pipe), val);

					if (vdsc_instances_per_pipe == 2)

						intel_de_write_dsb(display, dsb, LNL_DSC1_SU_PARAMETER_SET_0(pipe), val);

				}

				static i915_reg_t dss_ctl1_reg(struct intel_crtc *crtc, enum transcoder cpu_transcoder)

				{

					return is_pipe_dsc(crtc, cpu_transcoder) ?

									
										sys/dev/pci/drm/i915/display/intel_vdsc.h
									
		+3
		
												View File
												
				@@ -13,6 +13,7 @@ struct drm_printer;

				enum transcoder;

				struct intel_crtc;

				struct intel_crtc_state;

				struct intel_dsb;

				struct intel_encoder;

				bool intel_dsc_source_support(const struct intel_crtc_state *crtc_state);

				@@ -29,6 +30,8 @@ void intel_dsc_dsi_pps_write(struct intel_encoder *encoder,

							     const struct intel_crtc_state *crtc_state);

				void intel_dsc_dp_pps_write(struct intel_encoder *encoder,

							    const struct intel_crtc_state *crtc_state);

				void intel_dsc_su_et_parameters_configure(struct intel_dsb *dsb, struct intel_encoder *encoder,

									  const struct intel_crtc_state *crtc_state, int su_lines);

				void intel_vdsc_state_dump(struct drm_printer *p, int indent,

							   const struct intel_crtc_state *crtc_state);

				int intel_vdsc_min_cdclk(const struct intel_crtc_state *crtc_state);