// SPDX-License-Identifier: MIT /* * Copyright © 2018 Intel Corporation * * Author: Gaurav K Singh * Manasi Navare */ #include #include #include "i915_drv.h" #include "i915_reg.h" #include "intel_crtc.h" #include "intel_de.h" #include "intel_display_types.h" #include "intel_dsi.h" #include "intel_qp_tables.h" #include "intel_vdsc.h" #include "intel_vdsc_regs.h" bool intel_dsc_source_support(const struct intel_crtc_state *crtc_state) { const struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); struct drm_i915_private *i915 = to_i915(crtc->base.dev); enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; if (!HAS_DSC(i915)) return false; if (DISPLAY_VER(i915) == 11 && cpu_transcoder == TRANSCODER_A) return false; return true; } static bool is_pipe_dsc(struct intel_crtc *crtc, enum transcoder cpu_transcoder) { struct drm_i915_private *i915 = to_i915(crtc->base.dev); if (DISPLAY_VER(i915) >= 12) return true; if (cpu_transcoder == TRANSCODER_EDP || cpu_transcoder == TRANSCODER_DSI_0 || cpu_transcoder == TRANSCODER_DSI_1) return false; /* There's no pipe A DSC engine on ICL */ drm_WARN_ON(&i915->drm, crtc->pipe == PIPE_A); return true; } static void intel_vdsc_set_min_max_qp(struct drm_dsc_config *vdsc_cfg, int buf, int bpp) { int bpc = vdsc_cfg->bits_per_component; /* Read range_minqp and range_max_qp from qp tables */ vdsc_cfg->rc_range_params[buf].range_min_qp = intel_lookup_range_min_qp(bpc, buf, bpp, vdsc_cfg->native_420); vdsc_cfg->rc_range_params[buf].range_max_qp = intel_lookup_range_max_qp(bpc, buf, bpp, vdsc_cfg->native_420); } /* * We are using the method provided in DSC 1.2a C-Model in codec_main.c * Above method use a common formula to derive values for any combination of DSC * variables. The formula approach may yield slight differences in the derived PPS * parameters from the original parameter sets. These differences are not consequential * to the coding performance because all parameter sets have been shown to produce * visually lossless quality (provides the same PPS values as * DSCParameterValuesVESA V1-2 spreadsheet). */ static void calculate_rc_params(struct drm_dsc_config *vdsc_cfg) { int bpp = to_bpp_int(vdsc_cfg->bits_per_pixel); int bpc = vdsc_cfg->bits_per_component; int qp_bpc_modifier = (bpc - 8) * 2; int uncompressed_bpg_rate; int first_line_bpg_offset; u32 res, buf_i, bpp_i; if (vdsc_cfg->slice_height >= 8) first_line_bpg_offset = 12 + (9 * min(34, vdsc_cfg->slice_height - 8)) / 100; else first_line_bpg_offset = 2 * (vdsc_cfg->slice_height - 1); uncompressed_bpg_rate = (3 * bpc + (vdsc_cfg->convert_rgb ? 0 : 2)) * 3; vdsc_cfg->first_line_bpg_offset = clamp(first_line_bpg_offset, 0, uncompressed_bpg_rate - 3 * bpp); /* * According to DSC 1.2 spec in Section 4.1 if native_420 is set: * -second_line_bpg_offset is 12 in general and equal to 2*(slice_height-1) if slice * height < 8. * -second_line_offset_adj is 512 as shown by emperical values to yield best chroma * preservation in second line. * -nsl_bpg_offset is calculated as second_line_offset/slice_height -1 then rounded * up to 16 fractional bits, we left shift second line offset by 11 to preserve 11 * fractional bits. */ if (vdsc_cfg->native_420) { if (vdsc_cfg->slice_height >= 8) vdsc_cfg->second_line_bpg_offset = 12; else vdsc_cfg->second_line_bpg_offset = 2 * (vdsc_cfg->slice_height - 1); vdsc_cfg->second_line_offset_adj = 512; vdsc_cfg->nsl_bpg_offset = DIV_ROUND_UP(vdsc_cfg->second_line_bpg_offset << 11, vdsc_cfg->slice_height - 1); } /* Our hw supports only 444 modes as of today */ if (bpp >= 12) vdsc_cfg->initial_offset = 2048; else if (bpp >= 10) vdsc_cfg->initial_offset = 5632 - DIV_ROUND_UP(((bpp - 10) * 3584), 2); else if (bpp >= 8) vdsc_cfg->initial_offset = 6144 - DIV_ROUND_UP(((bpp - 8) * 512), 2); else vdsc_cfg->initial_offset = 6144; /* initial_xmit_delay = rc_model_size/2/compression_bpp */ vdsc_cfg->initial_xmit_delay = DIV_ROUND_UP(DSC_RC_MODEL_SIZE_CONST, 2 * bpp); vdsc_cfg->flatness_min_qp = 3 + qp_bpc_modifier; vdsc_cfg->flatness_max_qp = 12 + qp_bpc_modifier; vdsc_cfg->rc_quant_incr_limit0 = 11 + qp_bpc_modifier; vdsc_cfg->rc_quant_incr_limit1 = 11 + qp_bpc_modifier; if (vdsc_cfg->native_420) { static const s8 ofs_und4[] = { 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -12, -12, -12, -12 }; static const s8 ofs_und5[] = { 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12 }; static const s8 ofs_und6[] = { 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12 }; static const s8 ofs_und8[] = { 10, 8, 6, 4, 2, 0, -2, -4, -6, -8, -10, -10, -12, -12, -12 }; /* * For 420 format since bits_per_pixel (bpp) is set to target bpp * 2, * QP table values for target bpp 4.0 to 4.4375 (rounded to 4.0) are * actually for bpp 8 to 8.875 (rounded to 4.0 * 2 i.e 8). * Similarly values for target bpp 4.5 to 4.8375 (rounded to 4.5) * are for bpp 9 to 9.875 (rounded to 4.5 * 2 i.e 9), and so on. */ bpp_i = bpp - 8; for (buf_i = 0; buf_i < DSC_NUM_BUF_RANGES; buf_i++) { u8 range_bpg_offset; intel_vdsc_set_min_max_qp(vdsc_cfg, buf_i, bpp_i); /* Calculate range_bpg_offset */ if (bpp <= 8) { range_bpg_offset = ofs_und4[buf_i]; } else if (bpp <= 10) { res = DIV_ROUND_UP(((bpp - 8) * (ofs_und5[buf_i] - ofs_und4[buf_i])), 2); range_bpg_offset = ofs_und4[buf_i] + res; } else if (bpp <= 12) { res = DIV_ROUND_UP(((bpp - 10) * (ofs_und6[buf_i] - ofs_und5[buf_i])), 2); range_bpg_offset = ofs_und5[buf_i] + res; } else if (bpp <= 16) { res = DIV_ROUND_UP(((bpp - 12) * (ofs_und8[buf_i] - ofs_und6[buf_i])), 4); range_bpg_offset = ofs_und6[buf_i] + res; } else { range_bpg_offset = ofs_und8[buf_i]; } vdsc_cfg->rc_range_params[buf_i].range_bpg_offset = range_bpg_offset & DSC_RANGE_BPG_OFFSET_MASK; } } else { /* fractional bpp part * 10000 (for precision up to 4 decimal places) */ int fractional_bits = to_bpp_frac(vdsc_cfg->bits_per_pixel); static const s8 ofs_und6[] = { 0, -2, -2, -4, -6, -6, -8, -8, -8, -10, -10, -12, -12, -12, -12 }; static const s8 ofs_und8[] = { 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12 }; static const s8 ofs_und12[] = { 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12 }; static const s8 ofs_und15[] = { 10, 8, 6, 4, 2, 0, -2, -4, -6, -8, -10, -10, -12, -12, -12 }; /* * QP table rows have values in increment of 0.5. * So 6.0 bpp to 6.4375 will have index 0, 6.5 to 6.9375 will have index 1, * and so on. * 0.5 fractional part with 4 decimal precision becomes 5000 */ bpp_i = ((bpp - 6) + (fractional_bits < 5000 ? 0 : 1)); for (buf_i = 0; buf_i < DSC_NUM_BUF_RANGES; buf_i++) { u8 range_bpg_offset; intel_vdsc_set_min_max_qp(vdsc_cfg, buf_i, bpp_i); /* Calculate range_bpg_offset */ if (bpp <= 6) { range_bpg_offset = ofs_und6[buf_i]; } else if (bpp <= 8) { res = DIV_ROUND_UP(((bpp - 6) * (ofs_und8[buf_i] - ofs_und6[buf_i])), 2); range_bpg_offset = ofs_und6[buf_i] + res; } else if (bpp <= 12) { range_bpg_offset = ofs_und8[buf_i]; } else if (bpp <= 15) { res = DIV_ROUND_UP(((bpp - 12) * (ofs_und15[buf_i] - ofs_und12[buf_i])), 3); range_bpg_offset = ofs_und12[buf_i] + res; } else { range_bpg_offset = ofs_und15[buf_i]; } vdsc_cfg->rc_range_params[buf_i].range_bpg_offset = range_bpg_offset & DSC_RANGE_BPG_OFFSET_MASK; } } } static int intel_dsc_slice_dimensions_valid(struct intel_crtc_state *pipe_config, struct drm_dsc_config *vdsc_cfg) { if (pipe_config->output_format == INTEL_OUTPUT_FORMAT_RGB || pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR444) { if (vdsc_cfg->slice_height > 4095) return -EINVAL; if (vdsc_cfg->slice_height * vdsc_cfg->slice_width < 15000) return -EINVAL; } else if (pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420) { if (vdsc_cfg->slice_width % 2) return -EINVAL; if (vdsc_cfg->slice_height % 2) return -EINVAL; if (vdsc_cfg->slice_height > 4094) return -EINVAL; if (vdsc_cfg->slice_height * vdsc_cfg->slice_width < 30000) return -EINVAL; } return 0; } int intel_dsc_compute_params(struct intel_crtc_state *pipe_config) { struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc); struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); struct drm_dsc_config *vdsc_cfg = &pipe_config->dsc.config; u16 compressed_bpp = to_bpp_int(pipe_config->dsc.compressed_bpp_x16); int err; int ret; vdsc_cfg->pic_width = pipe_config->hw.adjusted_mode.crtc_hdisplay; vdsc_cfg->slice_width = DIV_ROUND_UP(vdsc_cfg->pic_width, pipe_config->dsc.slice_count); err = intel_dsc_slice_dimensions_valid(pipe_config, vdsc_cfg); if (err) { drm_dbg_kms(&dev_priv->drm, "Slice dimension requirements not met\n"); return err; } /* * According to DSC 1.2 specs if colorspace is YCbCr then convert_rgb is 0 * else 1 */ vdsc_cfg->convert_rgb = pipe_config->output_format != INTEL_OUTPUT_FORMAT_YCBCR420 && pipe_config->output_format != INTEL_OUTPUT_FORMAT_YCBCR444; if (DISPLAY_VER(dev_priv) >= 14 && pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420) vdsc_cfg->native_420 = true; /* We do not support YcBCr422 as of now */ vdsc_cfg->native_422 = false; vdsc_cfg->simple_422 = false; /* Gen 11 does not support VBR */ vdsc_cfg->vbr_enable = false; vdsc_cfg->bits_per_pixel = pipe_config->dsc.compressed_bpp_x16; /* * According to DSC 1.2 specs in Section 4.1 if native_420 is set * we need to double the current bpp. */ if (vdsc_cfg->native_420) vdsc_cfg->bits_per_pixel <<= 1; vdsc_cfg->bits_per_component = pipe_config->pipe_bpp / 3; drm_dsc_set_rc_buf_thresh(vdsc_cfg); /* * From XE_LPD onwards we supports compression bpps in steps of 1 * upto uncompressed bpp-1, hence add calculations for all the rc * parameters */ if (DISPLAY_VER(dev_priv) >= 13) { calculate_rc_params(vdsc_cfg); } else { if ((compressed_bpp == 8 || compressed_bpp == 12) && (vdsc_cfg->bits_per_component == 8 || vdsc_cfg->bits_per_component == 10 || vdsc_cfg->bits_per_component == 12)) ret = drm_dsc_setup_rc_params(vdsc_cfg, DRM_DSC_1_1_PRE_SCR); else ret = drm_dsc_setup_rc_params(vdsc_cfg, DRM_DSC_1_2_444); if (ret) return ret; } /* * BitsPerComponent value determines mux_word_size: * When BitsPerComponent is less than or 10bpc, muxWordSize will be equal to * 48 bits otherwise 64 */ if (vdsc_cfg->bits_per_component <= 10) vdsc_cfg->mux_word_size = DSC_MUX_WORD_SIZE_8_10_BPC; else vdsc_cfg->mux_word_size = DSC_MUX_WORD_SIZE_12_BPC; /* InitialScaleValue is a 6 bit value with 3 fractional bits (U3.3) */ vdsc_cfg->initial_scale_value = (vdsc_cfg->rc_model_size << 3) / (vdsc_cfg->rc_model_size - vdsc_cfg->initial_offset); return 0; } enum intel_display_power_domain intel_dsc_power_domain(struct intel_crtc *crtc, enum transcoder cpu_transcoder) { struct drm_i915_private *i915 = to_i915(crtc->base.dev); enum pipe pipe = crtc->pipe; /* * VDSC/joining uses a separate power well, PW2, and requires * POWER_DOMAIN_TRANSCODER_VDSC_PW2 power domain in two cases: * * - ICL eDP/DSI transcoder * - Display version 12 (except RKL) pipe A * * For any other pipe, VDSC/joining uses the power well associated with * the pipe in use. Hence another reference on the pipe power domain * will suffice. (Except no VDSC/joining on ICL pipe A.) */ if (DISPLAY_VER(i915) == 12 && !IS_ROCKETLAKE(i915) && pipe == PIPE_A) return POWER_DOMAIN_TRANSCODER_VDSC_PW2; else if (is_pipe_dsc(crtc, cpu_transcoder)) return POWER_DOMAIN_PIPE(pipe); else return POWER_DOMAIN_TRANSCODER_VDSC_PW2; } static int intel_dsc_get_vdsc_per_pipe(const struct intel_crtc_state *crtc_state) { return crtc_state->dsc.dsc_split ? 2 : 1; } int intel_dsc_get_num_vdsc_instances(const struct intel_crtc_state *crtc_state) { int num_vdsc_instances = intel_dsc_get_vdsc_per_pipe(crtc_state); if (crtc_state->bigjoiner_pipes) num_vdsc_instances *= 2; return num_vdsc_instances; } static void intel_dsc_get_pps_reg(const struct intel_crtc_state *crtc_state, int pps, i915_reg_t *dsc_reg, int dsc_reg_num) { struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; enum pipe pipe = crtc->pipe; bool pipe_dsc; pipe_dsc = is_pipe_dsc(crtc, cpu_transcoder); if (dsc_reg_num >= 3) MISSING_CASE(dsc_reg_num); if (dsc_reg_num >= 2) dsc_reg[1] = pipe_dsc ? ICL_DSC1_PPS(pipe, pps) : DSCC_PPS(pps); if (dsc_reg_num >= 1) dsc_reg[0] = pipe_dsc ? ICL_DSC0_PPS(pipe, pps) : DSCA_PPS(pps); } static void intel_dsc_pps_write(const struct intel_crtc_state *crtc_state, int pps, u32 pps_val) { struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); struct drm_i915_private *i915 = to_i915(crtc->base.dev); i915_reg_t dsc_reg[2]; int i, vdsc_per_pipe, dsc_reg_num; vdsc_per_pipe = intel_dsc_get_vdsc_per_pipe(crtc_state); dsc_reg_num = min_t(int, ARRAY_SIZE(dsc_reg), vdsc_per_pipe); drm_WARN_ON_ONCE(&i915->drm, dsc_reg_num < vdsc_per_pipe); intel_dsc_get_pps_reg(crtc_state, pps, dsc_reg, dsc_reg_num); for (i = 0; i < dsc_reg_num; i++) intel_de_write(i915, dsc_reg[i], pps_val); } static void intel_dsc_pps_configure(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); const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config; enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; enum pipe pipe = crtc->pipe; u32 pps_val; u32 rc_buf_thresh_dword[4]; u32 rc_range_params_dword[8]; int i = 0; int num_vdsc_instances = intel_dsc_get_num_vdsc_instances(crtc_state); int vdsc_instances_per_pipe = intel_dsc_get_vdsc_per_pipe(crtc_state); /* PPS 0 */ pps_val = DSC_PPS0_VER_MAJOR(1) | DSC_PPS0_VER_MINOR(vdsc_cfg->dsc_version_minor) | DSC_PPS0_BPC(vdsc_cfg->bits_per_component) | DSC_PPS0_LINE_BUF_DEPTH(vdsc_cfg->line_buf_depth); if (vdsc_cfg->dsc_version_minor == 2) { pps_val |= DSC_PPS0_ALT_ICH_SEL; if (vdsc_cfg->native_420) pps_val |= DSC_PPS0_NATIVE_420_ENABLE; if (vdsc_cfg->native_422) pps_val |= DSC_PPS0_NATIVE_422_ENABLE; } if (vdsc_cfg->block_pred_enable) pps_val |= DSC_PPS0_BLOCK_PREDICTION; if (vdsc_cfg->convert_rgb) pps_val |= DSC_PPS0_COLOR_SPACE_CONVERSION; if (vdsc_cfg->simple_422) pps_val |= DSC_PPS0_422_ENABLE; if (vdsc_cfg->vbr_enable) pps_val |= DSC_PPS0_VBR_ENABLE; drm_dbg_kms(&dev_priv->drm, "PPS0 = 0x%08x\n", pps_val); intel_dsc_pps_write(crtc_state, 0, pps_val); /* PPS 1 */ pps_val = DSC_PPS1_BPP(vdsc_cfg->bits_per_pixel); drm_dbg_kms(&dev_priv->drm, "PPS1 = 0x%08x\n", pps_val); intel_dsc_pps_write(crtc_state, 1, pps_val); /* PPS 2 */ pps_val = DSC_PPS2_PIC_HEIGHT(vdsc_cfg->pic_height) | DSC_PPS2_PIC_WIDTH(vdsc_cfg->pic_width / num_vdsc_instances); drm_dbg_kms(&dev_priv->drm, "PPS2 = 0x%08x\n", pps_val); intel_dsc_pps_write(crtc_state, 2, pps_val); /* PPS 3 */ pps_val = DSC_PPS3_SLICE_HEIGHT(vdsc_cfg->slice_height) | DSC_PPS3_SLICE_WIDTH(vdsc_cfg->slice_width); drm_dbg_kms(&dev_priv->drm, "PPS3 = 0x%08x\n", pps_val); intel_dsc_pps_write(crtc_state, 3, pps_val); /* PPS 4 */ pps_val = DSC_PPS4_INITIAL_XMIT_DELAY(vdsc_cfg->initial_xmit_delay) | DSC_PPS4_INITIAL_DEC_DELAY(vdsc_cfg->initial_dec_delay); drm_dbg_kms(&dev_priv->drm, "PPS4 = 0x%08x\n", pps_val); intel_dsc_pps_write(crtc_state, 4, pps_val); /* PPS 5 */ pps_val = DSC_PPS5_SCALE_INC_INT(vdsc_cfg->scale_increment_interval) | DSC_PPS5_SCALE_DEC_INT(vdsc_cfg->scale_decrement_interval); drm_dbg_kms(&dev_priv->drm, "PPS5 = 0x%08x\n", pps_val); intel_dsc_pps_write(crtc_state, 5, pps_val); /* PPS 6 */ pps_val = DSC_PPS6_INITIAL_SCALE_VALUE(vdsc_cfg->initial_scale_value) | DSC_PPS6_FIRST_LINE_BPG_OFFSET(vdsc_cfg->first_line_bpg_offset) | DSC_PPS6_FLATNESS_MIN_QP(vdsc_cfg->flatness_min_qp) | DSC_PPS6_FLATNESS_MAX_QP(vdsc_cfg->flatness_max_qp); drm_dbg_kms(&dev_priv->drm, "PPS6 = 0x%08x\n", pps_val); intel_dsc_pps_write(crtc_state, 6, pps_val); /* PPS 7 */ pps_val = DSC_PPS7_SLICE_BPG_OFFSET(vdsc_cfg->slice_bpg_offset) | DSC_PPS7_NFL_BPG_OFFSET(vdsc_cfg->nfl_bpg_offset); drm_dbg_kms(&dev_priv->drm, "PPS7 = 0x%08x\n", pps_val); intel_dsc_pps_write(crtc_state, 7, pps_val); /* PPS 8 */ pps_val = DSC_PPS8_FINAL_OFFSET(vdsc_cfg->final_offset) | DSC_PPS8_INITIAL_OFFSET(vdsc_cfg->initial_offset); drm_dbg_kms(&dev_priv->drm, "PPS8 = 0x%08x\n", pps_val); intel_dsc_pps_write(crtc_state, 8, pps_val); /* PPS 9 */ pps_val = DSC_PPS9_RC_MODEL_SIZE(vdsc_cfg->rc_model_size) | DSC_PPS9_RC_EDGE_FACTOR(DSC_RC_EDGE_FACTOR_CONST); drm_dbg_kms(&dev_priv->drm, "PPS9 = 0x%08x\n", pps_val); intel_dsc_pps_write(crtc_state, 9, pps_val); /* PPS 10 */ pps_val = DSC_PPS10_RC_QUANT_INC_LIMIT0(vdsc_cfg->rc_quant_incr_limit0) | DSC_PPS10_RC_QUANT_INC_LIMIT1(vdsc_cfg->rc_quant_incr_limit1) | DSC_PPS10_RC_TARGET_OFF_HIGH(DSC_RC_TGT_OFFSET_HI_CONST) | DSC_PPS10_RC_TARGET_OFF_LOW(DSC_RC_TGT_OFFSET_LO_CONST); drm_dbg_kms(&dev_priv->drm, "PPS10 = 0x%08x\n", pps_val); intel_dsc_pps_write(crtc_state, 10, pps_val); /* PPS 16 */ pps_val = DSC_PPS16_SLICE_CHUNK_SIZE(vdsc_cfg->slice_chunk_size) | DSC_PPS16_SLICE_PER_LINE((vdsc_cfg->pic_width / num_vdsc_instances) / vdsc_cfg->slice_width) | DSC_PPS16_SLICE_ROW_PER_FRAME(vdsc_cfg->pic_height / vdsc_cfg->slice_height); drm_dbg_kms(&dev_priv->drm, "PPS16 = 0x%08x\n", pps_val); intel_dsc_pps_write(crtc_state, 16, pps_val); if (DISPLAY_VER(dev_priv) >= 14) { /* PPS 17 */ pps_val = DSC_PPS17_SL_BPG_OFFSET(vdsc_cfg->second_line_bpg_offset); drm_dbg_kms(&dev_priv->drm, "PPS17 = 0x%08x\n", pps_val); intel_dsc_pps_write(crtc_state, 17, pps_val); /* PPS 18 */ pps_val = DSC_PPS18_NSL_BPG_OFFSET(vdsc_cfg->nsl_bpg_offset) | DSC_PPS18_SL_OFFSET_ADJ(vdsc_cfg->second_line_offset_adj); drm_dbg_kms(&dev_priv->drm, "PPS18 = 0x%08x\n", pps_val); intel_dsc_pps_write(crtc_state, 18, pps_val); } /* Populate the RC_BUF_THRESH registers */ memset(rc_buf_thresh_dword, 0, sizeof(rc_buf_thresh_dword)); for (i = 0; i < DSC_NUM_BUF_RANGES - 1; i++) { rc_buf_thresh_dword[i / 4] |= (u32)(vdsc_cfg->rc_buf_thresh[i] << BITS_PER_BYTE * (i % 4)); drm_dbg_kms(&dev_priv->drm, "RC_BUF_THRESH_%d = 0x%08x\n", i, rc_buf_thresh_dword[i / 4]); } if (!is_pipe_dsc(crtc, cpu_transcoder)) { intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_0, rc_buf_thresh_dword[0]); intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_0_UDW, rc_buf_thresh_dword[1]); intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_1, rc_buf_thresh_dword[2]); intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_1_UDW, rc_buf_thresh_dword[3]); if (vdsc_instances_per_pipe > 1) { intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_0, rc_buf_thresh_dword[0]); intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_0_UDW, rc_buf_thresh_dword[1]); intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_1, rc_buf_thresh_dword[2]); intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_1_UDW, rc_buf_thresh_dword[3]); } } else { intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_0(pipe), rc_buf_thresh_dword[0]); intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_0_UDW(pipe), rc_buf_thresh_dword[1]); intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_1(pipe), rc_buf_thresh_dword[2]); intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_1_UDW(pipe), rc_buf_thresh_dword[3]); if (vdsc_instances_per_pipe > 1) { intel_de_write(dev_priv, ICL_DSC1_RC_BUF_THRESH_0(pipe), rc_buf_thresh_dword[0]); intel_de_write(dev_priv, ICL_DSC1_RC_BUF_THRESH_0_UDW(pipe), rc_buf_thresh_dword[1]); intel_de_write(dev_priv, ICL_DSC1_RC_BUF_THRESH_1(pipe), rc_buf_thresh_dword[2]); intel_de_write(dev_priv, ICL_DSC1_RC_BUF_THRESH_1_UDW(pipe), rc_buf_thresh_dword[3]); } } /* Populate the RC_RANGE_PARAMETERS registers */ memset(rc_range_params_dword, 0, sizeof(rc_range_params_dword)); for (i = 0; i < DSC_NUM_BUF_RANGES; i++) { rc_range_params_dword[i / 2] |= (u32)(((vdsc_cfg->rc_range_params[i].range_bpg_offset << RC_BPG_OFFSET_SHIFT) | (vdsc_cfg->rc_range_params[i].range_max_qp << RC_MAX_QP_SHIFT) | (vdsc_cfg->rc_range_params[i].range_min_qp << RC_MIN_QP_SHIFT)) << 16 * (i % 2)); drm_dbg_kms(&dev_priv->drm, "RC_RANGE_PARAM_%d = 0x%08x\n", i, rc_range_params_dword[i / 2]); } if (!is_pipe_dsc(crtc, cpu_transcoder)) { intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_0, rc_range_params_dword[0]); intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_0_UDW, rc_range_params_dword[1]); intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_1, rc_range_params_dword[2]); intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_1_UDW, rc_range_params_dword[3]); intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_2, rc_range_params_dword[4]); intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_2_UDW, rc_range_params_dword[5]); intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_3, rc_range_params_dword[6]); intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_3_UDW, rc_range_params_dword[7]); if (vdsc_instances_per_pipe > 1) { intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_0, rc_range_params_dword[0]); intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_0_UDW, rc_range_params_dword[1]); intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_1, rc_range_params_dword[2]); intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_1_UDW, rc_range_params_dword[3]); intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_2, rc_range_params_dword[4]); intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_2_UDW, rc_range_params_dword[5]); intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_3, rc_range_params_dword[6]); intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_3_UDW, rc_range_params_dword[7]); } } else { intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_0(pipe), rc_range_params_dword[0]); intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_0_UDW(pipe), rc_range_params_dword[1]); intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_1(pipe), rc_range_params_dword[2]); intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_1_UDW(pipe), rc_range_params_dword[3]); intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_2(pipe), rc_range_params_dword[4]); intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_2_UDW(pipe), rc_range_params_dword[5]); intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_3(pipe), rc_range_params_dword[6]); intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_3_UDW(pipe), rc_range_params_dword[7]); if (vdsc_instances_per_pipe > 1) { intel_de_write(dev_priv, ICL_DSC1_RC_RANGE_PARAMETERS_0(pipe), rc_range_params_dword[0]); intel_de_write(dev_priv, ICL_DSC1_RC_RANGE_PARAMETERS_0_UDW(pipe), rc_range_params_dword[1]); intel_de_write(dev_priv, ICL_DSC1_RC_RANGE_PARAMETERS_1(pipe), rc_range_params_dword[2]); intel_de_write(dev_priv, ICL_DSC1_RC_RANGE_PARAMETERS_1_UDW(pipe), rc_range_params_dword[3]); intel_de_write(dev_priv, ICL_DSC1_RC_RANGE_PARAMETERS_2(pipe), rc_range_params_dword[4]); intel_de_write(dev_priv, ICL_DSC1_RC_RANGE_PARAMETERS_2_UDW(pipe), rc_range_params_dword[5]); intel_de_write(dev_priv, ICL_DSC1_RC_RANGE_PARAMETERS_3(pipe), rc_range_params_dword[6]); intel_de_write(dev_priv, ICL_DSC1_RC_RANGE_PARAMETERS_3_UDW(pipe), rc_range_params_dword[7]); } } } void intel_dsc_dsi_pps_write(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state) { const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config; struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); struct mipi_dsi_device *dsi; struct drm_dsc_picture_parameter_set pps; enum port port; if (!crtc_state->dsc.compression_enable) return; drm_dsc_pps_payload_pack(&pps, vdsc_cfg); for_each_dsi_port(port, intel_dsi->ports) { dsi = intel_dsi->dsi_hosts[port]->device; mipi_dsi_picture_parameter_set(dsi, &pps); mipi_dsi_compression_mode(dsi, true); } } void intel_dsc_dp_pps_write(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state) { struct intel_digital_port *dig_port = enc_to_dig_port(encoder); const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config; struct drm_dsc_pps_infoframe dp_dsc_pps_sdp; if (!crtc_state->dsc.compression_enable) return; /* Prepare DP SDP PPS header as per DP 1.4 spec, Table 2-123 */ drm_dsc_dp_pps_header_init(&dp_dsc_pps_sdp.pps_header); /* Fill the PPS payload bytes as per DSC spec 1.2 Table 4-1 */ drm_dsc_pps_payload_pack(&dp_dsc_pps_sdp.pps_payload, vdsc_cfg); dig_port->write_infoframe(encoder, crtc_state, DP_SDP_PPS, &dp_dsc_pps_sdp, sizeof(dp_dsc_pps_sdp)); } static i915_reg_t dss_ctl1_reg(struct intel_crtc *crtc, enum transcoder cpu_transcoder) { return is_pipe_dsc(crtc, cpu_transcoder) ? ICL_PIPE_DSS_CTL1(crtc->pipe) : DSS_CTL1; } static i915_reg_t dss_ctl2_reg(struct intel_crtc *crtc, enum transcoder cpu_transcoder) { return is_pipe_dsc(crtc, cpu_transcoder) ? ICL_PIPE_DSS_CTL2(crtc->pipe) : DSS_CTL2; } void intel_uncompressed_joiner_enable(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); u32 dss_ctl1_val = 0; if (crtc_state->bigjoiner_pipes && !crtc_state->dsc.compression_enable) { if (intel_crtc_is_bigjoiner_slave(crtc_state)) dss_ctl1_val |= UNCOMPRESSED_JOINER_SLAVE; else dss_ctl1_val |= UNCOMPRESSED_JOINER_MASTER; intel_de_write(dev_priv, dss_ctl1_reg(crtc, crtc_state->cpu_transcoder), dss_ctl1_val); } } void intel_dsc_enable(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); u32 dss_ctl1_val = 0; u32 dss_ctl2_val = 0; int vdsc_instances_per_pipe = intel_dsc_get_vdsc_per_pipe(crtc_state); if (!crtc_state->dsc.compression_enable) return; intel_dsc_pps_configure(crtc_state); dss_ctl2_val |= LEFT_BRANCH_VDSC_ENABLE; if (vdsc_instances_per_pipe > 1) { dss_ctl2_val |= RIGHT_BRANCH_VDSC_ENABLE; dss_ctl1_val |= JOINER_ENABLE; } if (crtc_state->bigjoiner_pipes) { dss_ctl1_val |= BIG_JOINER_ENABLE; if (!intel_crtc_is_bigjoiner_slave(crtc_state)) dss_ctl1_val |= MASTER_BIG_JOINER_ENABLE; } intel_de_write(dev_priv, dss_ctl1_reg(crtc, crtc_state->cpu_transcoder), dss_ctl1_val); intel_de_write(dev_priv, dss_ctl2_reg(crtc, crtc_state->cpu_transcoder), dss_ctl2_val); } void intel_dsc_disable(const struct intel_crtc_state *old_crtc_state) { struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc); struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); /* Disable only if either of them is enabled */ if (old_crtc_state->dsc.compression_enable || old_crtc_state->bigjoiner_pipes) { intel_de_write(dev_priv, dss_ctl1_reg(crtc, old_crtc_state->cpu_transcoder), 0); intel_de_write(dev_priv, dss_ctl2_reg(crtc, old_crtc_state->cpu_transcoder), 0); } } static u32 intel_dsc_pps_read(struct intel_crtc_state *crtc_state, int pps, bool *all_equal) { struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); struct drm_i915_private *i915 = to_i915(crtc->base.dev); i915_reg_t dsc_reg[2]; int i, vdsc_per_pipe, dsc_reg_num; u32 val; vdsc_per_pipe = intel_dsc_get_vdsc_per_pipe(crtc_state); dsc_reg_num = min_t(int, ARRAY_SIZE(dsc_reg), vdsc_per_pipe); drm_WARN_ON_ONCE(&i915->drm, dsc_reg_num < vdsc_per_pipe); intel_dsc_get_pps_reg(crtc_state, pps, dsc_reg, dsc_reg_num); *all_equal = true; val = intel_de_read(i915, dsc_reg[0]); for (i = 1; i < dsc_reg_num; i++) { if (intel_de_read(i915, dsc_reg[i]) != val) { *all_equal = false; break; } } return val; } static u32 intel_dsc_pps_read_and_verify(struct intel_crtc_state *crtc_state, int pps) { struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); struct drm_i915_private *i915 = to_i915(crtc->base.dev); u32 val; bool all_equal; val = intel_dsc_pps_read(crtc_state, pps, &all_equal); drm_WARN_ON(&i915->drm, !all_equal); return val; } static void intel_dsc_get_pps_config(struct intel_crtc_state *crtc_state) { struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config; struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); struct drm_i915_private *i915 = to_i915(crtc->base.dev); int num_vdsc_instances = intel_dsc_get_num_vdsc_instances(crtc_state); u32 pps_temp; /* PPS 0 */ pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 0); vdsc_cfg->bits_per_component = REG_FIELD_GET(DSC_PPS0_BPC_MASK, pps_temp); vdsc_cfg->line_buf_depth = REG_FIELD_GET(DSC_PPS0_LINE_BUF_DEPTH_MASK, pps_temp); vdsc_cfg->block_pred_enable = pps_temp & DSC_PPS0_BLOCK_PREDICTION; vdsc_cfg->convert_rgb = pps_temp & DSC_PPS0_COLOR_SPACE_CONVERSION; vdsc_cfg->simple_422 = pps_temp & DSC_PPS0_422_ENABLE; vdsc_cfg->native_422 = pps_temp & DSC_PPS0_NATIVE_422_ENABLE; vdsc_cfg->native_420 = pps_temp & DSC_PPS0_NATIVE_420_ENABLE; vdsc_cfg->vbr_enable = pps_temp & DSC_PPS0_VBR_ENABLE; /* PPS 1 */ pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 1); vdsc_cfg->bits_per_pixel = REG_FIELD_GET(DSC_PPS1_BPP_MASK, pps_temp); if (vdsc_cfg->native_420) vdsc_cfg->bits_per_pixel >>= 1; crtc_state->dsc.compressed_bpp_x16 = vdsc_cfg->bits_per_pixel; /* PPS 2 */ pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 2); vdsc_cfg->pic_width = REG_FIELD_GET(DSC_PPS2_PIC_WIDTH_MASK, pps_temp) * num_vdsc_instances; vdsc_cfg->pic_height = REG_FIELD_GET(DSC_PPS2_PIC_HEIGHT_MASK, pps_temp); /* PPS 3 */ pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 3); vdsc_cfg->slice_width = REG_FIELD_GET(DSC_PPS3_SLICE_WIDTH_MASK, pps_temp); vdsc_cfg->slice_height = REG_FIELD_GET(DSC_PPS3_SLICE_HEIGHT_MASK, pps_temp); /* PPS 4 */ pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 4); vdsc_cfg->initial_dec_delay = REG_FIELD_GET(DSC_PPS4_INITIAL_DEC_DELAY_MASK, pps_temp); vdsc_cfg->initial_xmit_delay = REG_FIELD_GET(DSC_PPS4_INITIAL_XMIT_DELAY_MASK, pps_temp); /* PPS 5 */ pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 5); vdsc_cfg->scale_decrement_interval = REG_FIELD_GET(DSC_PPS5_SCALE_DEC_INT_MASK, pps_temp); vdsc_cfg->scale_increment_interval = REG_FIELD_GET(DSC_PPS5_SCALE_INC_INT_MASK, pps_temp); /* PPS 6 */ pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 6); vdsc_cfg->initial_scale_value = REG_FIELD_GET(DSC_PPS6_INITIAL_SCALE_VALUE_MASK, pps_temp); vdsc_cfg->first_line_bpg_offset = REG_FIELD_GET(DSC_PPS6_FIRST_LINE_BPG_OFFSET_MASK, pps_temp); vdsc_cfg->flatness_min_qp = REG_FIELD_GET(DSC_PPS6_FLATNESS_MIN_QP_MASK, pps_temp); vdsc_cfg->flatness_max_qp = REG_FIELD_GET(DSC_PPS6_FLATNESS_MAX_QP_MASK, pps_temp); /* PPS 7 */ pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 7); vdsc_cfg->nfl_bpg_offset = REG_FIELD_GET(DSC_PPS7_NFL_BPG_OFFSET_MASK, pps_temp); vdsc_cfg->slice_bpg_offset = REG_FIELD_GET(DSC_PPS7_SLICE_BPG_OFFSET_MASK, pps_temp); /* PPS 8 */ pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 8); vdsc_cfg->initial_offset = REG_FIELD_GET(DSC_PPS8_INITIAL_OFFSET_MASK, pps_temp); vdsc_cfg->final_offset = REG_FIELD_GET(DSC_PPS8_FINAL_OFFSET_MASK, pps_temp); /* PPS 9 */ pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 9); vdsc_cfg->rc_model_size = REG_FIELD_GET(DSC_PPS9_RC_MODEL_SIZE_MASK, pps_temp); /* PPS 10 */ pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 10); vdsc_cfg->rc_quant_incr_limit0 = REG_FIELD_GET(DSC_PPS10_RC_QUANT_INC_LIMIT0_MASK, pps_temp); vdsc_cfg->rc_quant_incr_limit1 = REG_FIELD_GET(DSC_PPS10_RC_QUANT_INC_LIMIT1_MASK, pps_temp); /* PPS 16 */ pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 16); vdsc_cfg->slice_chunk_size = REG_FIELD_GET(DSC_PPS16_SLICE_CHUNK_SIZE_MASK, pps_temp); if (DISPLAY_VER(i915) >= 14) { /* PPS 17 */ pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 17); vdsc_cfg->second_line_bpg_offset = REG_FIELD_GET(DSC_PPS17_SL_BPG_OFFSET_MASK, pps_temp); /* PPS 18 */ pps_temp = intel_dsc_pps_read_and_verify(crtc_state, 18); vdsc_cfg->nsl_bpg_offset = REG_FIELD_GET(DSC_PPS18_NSL_BPG_OFFSET_MASK, pps_temp); vdsc_cfg->second_line_offset_adj = REG_FIELD_GET(DSC_PPS18_SL_OFFSET_ADJ_MASK, pps_temp); } } void intel_dsc_get_config(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 transcoder cpu_transcoder = crtc_state->cpu_transcoder; enum intel_display_power_domain power_domain; intel_wakeref_t wakeref; u32 dss_ctl1, dss_ctl2; if (!intel_dsc_source_support(crtc_state)) return; power_domain = intel_dsc_power_domain(crtc, cpu_transcoder); wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain); if (!wakeref) return; dss_ctl1 = intel_de_read(dev_priv, dss_ctl1_reg(crtc, cpu_transcoder)); dss_ctl2 = intel_de_read(dev_priv, dss_ctl2_reg(crtc, cpu_transcoder)); crtc_state->dsc.compression_enable = dss_ctl2 & LEFT_BRANCH_VDSC_ENABLE; if (!crtc_state->dsc.compression_enable) goto out; crtc_state->dsc.dsc_split = (dss_ctl2 & RIGHT_BRANCH_VDSC_ENABLE) && (dss_ctl1 & JOINER_ENABLE); intel_dsc_get_pps_config(crtc_state); out: intel_display_power_put(dev_priv, power_domain, wakeref); }