From patchwork Mon Sep 11 05:05:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Golani, Mitulkumar Ajitkumar" X-Patchwork-Id: 13378775 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D3955EE57DF for ; Mon, 11 Sep 2023 05:11:41 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 85B1410E104; Mon, 11 Sep 2023 05:11:38 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1FDA010E059 for ; Mon, 11 Sep 2023 05:11:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694409096; x=1725945096; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=sMgBEbFGROTgLS+UysAWyZpLbtA58FYyoMxCTbEr6Zs=; b=EMv2l1JKpfw9CJdPWmuwurAMNYDgNTt0IXhTwwmTCkNhT+hHds3JX7Rm FP8MeoVV1yo0ZIddd0j/eA2Ct3WvQ64bEW5SFweS5vd4bPzrORXR/8Bok bq5tRqDN5zT3TVehDoTRJpNEJ2aug0LEJwGB2WIPhZ+bfUomTZXPfFUiI juu3qMoJnGYsEPy7VdAZpys+RfFid5tKUUjRNEBaL75JPrWVoWAZF8r8J Tj6OoODBsc3f8dJzQY3LRYgc8pcGe8I3tIUsT+JZrWEMIIXqveBjfaKuE /ENzSD0TVqlMTKt+AI3DSjCLKhjYQMyCLSW4oO0nLxvCykR1x7lTixrvp w==; X-IronPort-AV: E=McAfee;i="6600,9927,10829"; a="377911987" X-IronPort-AV: E=Sophos;i="6.02,243,1688454000"; d="scan'208";a="377911987" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Sep 2023 22:11:35 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10829"; a="808692817" X-IronPort-AV: E=Sophos;i="6.02,243,1688454000"; d="scan'208";a="808692817" Received: from mgolanimitul-x299-ud4-pro.iind.intel.com ([10.190.239.114]) by fmsmga008.fm.intel.com with ESMTP; 10 Sep 2023 22:11:12 -0700 From: Mitul Golani To: intel-gfx@lists.freedesktop.org Date: Mon, 11 Sep 2023 10:35:42 +0530 Message-Id: <20230911050549.763538-2-mitulkumar.ajitkumar.golani@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230911050549.763538-1-mitulkumar.ajitkumar.golani@intel.com> References: <20230911050549.763538-1-mitulkumar.ajitkumar.golani@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 1/8] drm/display/dp: Add helper function to get DSC bpp prescision X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Ankit Nautiyal Add helper to get the DSC bits_per_pixel precision for the DP sink. Signed-off-by: Ankit Nautiyal --- drivers/gpu/drm/display/drm_dp_helper.c | 27 +++++++++++++++++++++++++ include/drm/display/drm_dp_helper.h | 1 + 2 files changed, 28 insertions(+) diff --git a/drivers/gpu/drm/display/drm_dp_helper.c b/drivers/gpu/drm/display/drm_dp_helper.c index 8a1b64c57dfd..5c23d5b8fc50 100644 --- a/drivers/gpu/drm/display/drm_dp_helper.c +++ b/drivers/gpu/drm/display/drm_dp_helper.c @@ -2323,6 +2323,33 @@ int drm_dp_read_desc(struct drm_dp_aux *aux, struct drm_dp_desc *desc, } EXPORT_SYMBOL(drm_dp_read_desc); +/** + * drm_dp_dsc_sink_bpp_incr() - Get bits per pixel increment + * @dsc_dpcd: DSC capabilities from DPCD + * + * Returns the bpp precision supported by the DP sink. + */ +u8 drm_dp_dsc_sink_bpp_incr(const u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_SIZE]) +{ + u8 bpp_increment_dpcd = dsc_dpcd[DP_DSC_BITS_PER_PIXEL_INC - DP_DSC_SUPPORT]; + + switch (bpp_increment_dpcd) { + case DP_DSC_BITS_PER_PIXEL_1_16: + return 16; + case DP_DSC_BITS_PER_PIXEL_1_8: + return 8; + case DP_DSC_BITS_PER_PIXEL_1_4: + return 4; + case DP_DSC_BITS_PER_PIXEL_1_2: + return 2; + case DP_DSC_BITS_PER_PIXEL_1_1: + return 1; + } + + return 0; +} +EXPORT_SYMBOL(drm_dp_dsc_sink_bpp_incr); + /** * drm_dp_dsc_sink_max_slice_count() - Get the max slice count * supported by the DSC sink. diff --git a/include/drm/display/drm_dp_helper.h b/include/drm/display/drm_dp_helper.h index 3369104e2d25..6968d4d87931 100644 --- a/include/drm/display/drm_dp_helper.h +++ b/include/drm/display/drm_dp_helper.h @@ -164,6 +164,7 @@ drm_dp_is_branch(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) } /* DP/eDP DSC support */ +u8 drm_dp_dsc_sink_bpp_incr(const u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_SIZE]); u8 drm_dp_dsc_sink_max_slice_count(const u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_SIZE], bool is_edp); u8 drm_dp_dsc_sink_line_buf_depth(const u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_SIZE]); From patchwork Mon Sep 11 05:05:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Golani, Mitulkumar Ajitkumar" X-Patchwork-Id: 13378777 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0704EEE801F for ; Mon, 11 Sep 2023 05:11:46 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B532610E111; Mon, 11 Sep 2023 05:11:40 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9369110E104 for ; Mon, 11 Sep 2023 05:11:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694409096; x=1725945096; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=JreR+UlkITtglEaSTCa+hf2KL8VoeQhMTIzcY0/Ad8c=; b=lItpPdIbip9/7T8PJ3bS3/i73SSTc0sEv8vuQV3aoo2DeAhYlvFzvEKo HI4eXluSOBxtYOdAWpJ/ZmyU00uzBFD6TZarY0hxiJq0FWwzwQ+BvCJpp GDLLoM9aKRMYiHH3iz6S8OcXV1+Wwp67y17JVwY1Rr+l8ia0V2pdtZWga pzLqIsWpvFGmqzuXgtWdOPu3kcVQ+8A1ICK1Klku+0DwZGhIMHy6TqsVx qu1+f8NR4X3Yg2SiyFH2j/QPg01GoUm1ecwDRwGj2P4bLS8ynlDJawCRj EyT4eyQHOLdhDdOpZgDTsLFtpLQ/j6euHvsW5eRpRC8C4Jdzp/n+xL8cU w==; X-IronPort-AV: E=McAfee;i="6600,9927,10829"; a="377911992" X-IronPort-AV: E=Sophos;i="6.02,243,1688454000"; d="scan'208";a="377911992" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Sep 2023 22:11:35 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10829"; a="808692862" X-IronPort-AV: E=Sophos;i="6.02,243,1688454000"; d="scan'208";a="808692862" Received: from mgolanimitul-x299-ud4-pro.iind.intel.com ([10.190.239.114]) by fmsmga008.fm.intel.com with ESMTP; 10 Sep 2023 22:11:14 -0700 From: Mitul Golani To: intel-gfx@lists.freedesktop.org Date: Mon, 11 Sep 2023 10:35:43 +0530 Message-Id: <20230911050549.763538-3-mitulkumar.ajitkumar.golani@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230911050549.763538-1-mitulkumar.ajitkumar.golani@intel.com> References: <20230911050549.763538-1-mitulkumar.ajitkumar.golani@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 2/8] drm/i915/display: Store compressed bpp in U6.4 format X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Ankit Nautiyal DSC parameter bits_per_pixel is stored in U6.4 format. The 4 bits represent the fractional part of the bpp. Currently we use compressed_bpp member of dsc structure to store only the integral part of the bits_per_pixel. To store the full bits_per_pixel along with the fractional part, compressed_bpp is changed to store bpp in U6.4 formats. Intergral part is retrieved by simply right shifting the member compressed_bpp by 4. v2: -Use to_bpp_int, to_bpp_frac_dec, to_bpp_x16 helpers while dealing with compressed bpp. (Suraj) -Fix comment styling. (Suraj) Signed-off-by: Ankit Nautiyal Reviewed-by: Suraj Kandpal --- drivers/gpu/drm/i915/display/icl_dsi.c | 10 ++++---- drivers/gpu/drm/i915/display/intel_audio.c | 2 +- drivers/gpu/drm/i915/display/intel_bios.c | 4 +-- drivers/gpu/drm/i915/display/intel_cdclk.c | 2 +- drivers/gpu/drm/i915/display/intel_display.c | 2 +- .../drm/i915/display/intel_display_types.h | 18 ++++++++++++- drivers/gpu/drm/i915/display/intel_dp.c | 25 +++++++++++-------- drivers/gpu/drm/i915/display/intel_dp_mst.c | 18 ++++++------- drivers/gpu/drm/i915/display/intel_vdsc.c | 4 +-- 9 files changed, 52 insertions(+), 33 deletions(-) diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c index ad6488e9c2b2..df98f35bbcda 100644 --- a/drivers/gpu/drm/i915/display/icl_dsi.c +++ b/drivers/gpu/drm/i915/display/icl_dsi.c @@ -330,7 +330,7 @@ static int afe_clk(struct intel_encoder *encoder, int bpp; if (crtc_state->dsc.compression_enable) - bpp = crtc_state->dsc.compressed_bpp; + bpp = to_bpp_int(crtc_state->dsc.compressed_bpp_x16); else bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format); @@ -860,7 +860,7 @@ gen11_dsi_set_transcoder_timings(struct intel_encoder *encoder, * compressed and non-compressed bpp. */ if (crtc_state->dsc.compression_enable) { - mul = crtc_state->dsc.compressed_bpp; + mul = to_bpp_int(crtc_state->dsc.compressed_bpp_x16); div = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format); } @@ -884,7 +884,7 @@ gen11_dsi_set_transcoder_timings(struct intel_encoder *encoder, int bpp, line_time_us, byte_clk_period_ns; if (crtc_state->dsc.compression_enable) - bpp = crtc_state->dsc.compressed_bpp; + bpp = to_bpp_int(crtc_state->dsc.compressed_bpp_x16); else bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format); @@ -1451,8 +1451,8 @@ static void gen11_dsi_get_timings(struct intel_encoder *encoder, struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode; - if (pipe_config->dsc.compressed_bpp) { - int div = pipe_config->dsc.compressed_bpp; + if (pipe_config->dsc.compressed_bpp_x16) { + int div = to_bpp_int(pipe_config->dsc.compressed_bpp_x16); int mul = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format); adjusted_mode->crtc_htotal = diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c index 19605264a35c..aa93ccd6c2aa 100644 --- a/drivers/gpu/drm/i915/display/intel_audio.c +++ b/drivers/gpu/drm/i915/display/intel_audio.c @@ -528,7 +528,7 @@ static unsigned int calc_hblank_early_prog(struct intel_encoder *encoder, h_active = crtc_state->hw.adjusted_mode.crtc_hdisplay; h_total = crtc_state->hw.adjusted_mode.crtc_htotal; pixel_clk = crtc_state->hw.adjusted_mode.crtc_clock; - vdsc_bpp = crtc_state->dsc.compressed_bpp; + vdsc_bpp = to_bpp_int(crtc_state->dsc.compressed_bpp_x16); cdclk = i915->display.cdclk.hw.cdclk; /* fec= 0.972261, using rounding multiplier of 1000000 */ fec_coeff = 972261; diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c index 858c959f7bab..7b6d299fbcf2 100644 --- a/drivers/gpu/drm/i915/display/intel_bios.c +++ b/drivers/gpu/drm/i915/display/intel_bios.c @@ -3384,8 +3384,8 @@ static void fill_dsc(struct intel_crtc_state *crtc_state, crtc_state->pipe_bpp = bpc * 3; - crtc_state->dsc.compressed_bpp = min(crtc_state->pipe_bpp, - VBT_DSC_MAX_BPP(dsc->max_bpp)); + crtc_state->dsc.compressed_bpp_x16 = to_bpp_x16(min(crtc_state->pipe_bpp, + VBT_DSC_MAX_BPP(dsc->max_bpp))); /* * FIXME: This is ugly, and slice count should take DSC engine diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c index ad5251ba6fe1..06a1e99a2762 100644 --- a/drivers/gpu/drm/i915/display/intel_cdclk.c +++ b/drivers/gpu/drm/i915/display/intel_cdclk.c @@ -2567,7 +2567,7 @@ static int intel_vdsc_min_cdclk(const struct intel_crtc_state *crtc_state) * => CDCLK >= compressed_bpp * Pixel clock / 2 * Bigjoiner Interface bits */ int bigjoiner_interface_bits = DISPLAY_VER(i915) > 13 ? 36 : 24; - int min_cdclk_bj = (crtc_state->dsc.compressed_bpp * pixel_clock) / + int min_cdclk_bj = (to_bpp_int(crtc_state->dsc.compressed_bpp_x16) * pixel_clock) / (2 * bigjoiner_interface_bits); min_cdclk = max(min_cdclk, min_cdclk_bj); diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 83e1bc858b9f..afcbdd4f105a 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -5365,7 +5365,7 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config, PIPE_CONF_CHECK_I(dsc.compression_enable); PIPE_CONF_CHECK_I(dsc.dsc_split); - PIPE_CONF_CHECK_I(dsc.compressed_bpp); + PIPE_CONF_CHECK_I(dsc.compressed_bpp_x16); PIPE_CONF_CHECK_BOOL(splitter.enable); PIPE_CONF_CHECK_I(splitter.link_count); diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h index c21064794f32..9eb7b8912076 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -1353,7 +1353,8 @@ struct intel_crtc_state { struct { bool compression_enable; bool dsc_split; - u16 compressed_bpp; + /* Compressed Bpp in U6.4 format (first 4 bits for fractional part) */ + u16 compressed_bpp_x16; u8 slice_count; struct drm_dsc_config config; } dsc; @@ -2108,4 +2109,19 @@ to_intel_frontbuffer(struct drm_framebuffer *fb) return fb ? to_intel_framebuffer(fb)->frontbuffer : NULL; } +static inline int to_bpp_int(int bpp_x16) +{ + return bpp_x16 >> 4; +} + +static inline int to_bpp_frac_dec(int bpp_x16) +{ + return (bpp_x16 & 0xf) * 625; +} + +static inline int to_bpp_x16(int bpp) +{ + return bpp << 4; +} + #endif /* __INTEL_DISPLAY_TYPES_H__ */ diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 2206b45bc78c..9b88ac3a73c7 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -1863,7 +1863,7 @@ icl_dsc_compute_link_config(struct intel_dp *intel_dp, valid_dsc_bpp[i], timeslots); if (ret == 0) { - pipe_config->dsc.compressed_bpp = valid_dsc_bpp[i]; + pipe_config->dsc.compressed_bpp_x16 = to_bpp_x16(valid_dsc_bpp[i]); return 0; } } @@ -1901,7 +1901,7 @@ xelpd_dsc_compute_link_config(struct intel_dp *intel_dp, compressed_bpp, timeslots); if (ret == 0) { - pipe_config->dsc.compressed_bpp = compressed_bpp; + pipe_config->dsc.compressed_bpp_x16 = to_bpp_x16(compressed_bpp); return 0; } } @@ -2085,7 +2085,7 @@ static int intel_edp_dsc_compute_pipe_bpp(struct intel_dp *intel_dp, /* Compressed BPP should be less than the Input DSC bpp */ dsc_max_bpp = min(dsc_max_bpp, pipe_bpp - 1); - pipe_config->dsc.compressed_bpp = max(dsc_min_bpp, dsc_max_bpp); + pipe_config->dsc.compressed_bpp_x16 = to_bpp_x16(max(dsc_min_bpp, dsc_max_bpp)); pipe_config->pipe_bpp = pipe_bpp; @@ -2172,17 +2172,19 @@ int intel_dp_dsc_compute_config(struct intel_dp *intel_dp, if (ret < 0) { drm_dbg_kms(&dev_priv->drm, "Cannot compute valid DSC parameters for Input Bpp = %d " - "Compressed BPP = %d\n", + "Compressed BPP = %d.%d\n", pipe_config->pipe_bpp, - pipe_config->dsc.compressed_bpp); + to_bpp_int(pipe_config->dsc.compressed_bpp_x16), + to_bpp_frac_dec(pipe_config->dsc.compressed_bpp_x16)); return ret; } pipe_config->dsc.compression_enable = true; drm_dbg_kms(&dev_priv->drm, "DP DSC computed with Input Bpp = %d " - "Compressed Bpp = %d Slice Count = %d\n", + "Compressed Bpp = %d.%d Slice Count = %d\n", pipe_config->pipe_bpp, - pipe_config->dsc.compressed_bpp, + to_bpp_int(pipe_config->dsc.compressed_bpp_x16), + to_bpp_frac_dec(pipe_config->dsc.compressed_bpp_x16), pipe_config->dsc.slice_count); return 0; @@ -2261,15 +2263,16 @@ intel_dp_compute_link_config(struct intel_encoder *encoder, if (pipe_config->dsc.compression_enable) { drm_dbg_kms(&i915->drm, - "DP lane count %d clock %d Input bpp %d Compressed bpp %d\n", + "DP lane count %d clock %d Input bpp %d Compressed bpp %d.%d\n", pipe_config->lane_count, pipe_config->port_clock, pipe_config->pipe_bpp, - pipe_config->dsc.compressed_bpp); + to_bpp_int(pipe_config->dsc.compressed_bpp_x16), + to_bpp_frac_dec(pipe_config->dsc.compressed_bpp_x16)); drm_dbg_kms(&i915->drm, "DP link rate required %i available %i\n", intel_dp_link_required(adjusted_mode->crtc_clock, - pipe_config->dsc.compressed_bpp), + to_bpp_int(pipe_config->dsc.compressed_bpp_x16)), intel_dp_max_data_rate(pipe_config->port_clock, pipe_config->lane_count)); } else { @@ -2702,7 +2705,7 @@ intel_dp_compute_config(struct intel_encoder *encoder, intel_dp_limited_color_range(pipe_config, conn_state); if (pipe_config->dsc.compression_enable) - link_bpp = pipe_config->dsc.compressed_bpp; + link_bpp = pipe_config->dsc.compressed_bpp_x16; else link_bpp = intel_dp_output_bpp(pipe_config->output_format, pipe_config->pipe_bpp); diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c index 2d1c42a5e684..68a81f10e772 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c @@ -140,7 +140,7 @@ static int intel_dp_mst_find_vcpi_slots_for_bpp(struct intel_encoder *encoder, if (!dsc) crtc_state->pipe_bpp = bpp; else - crtc_state->dsc.compressed_bpp = bpp; + crtc_state->dsc.compressed_bpp_x16 = to_bpp_x16(bpp); drm_dbg_kms(&i915->drm, "Got %d slots for pipe bpp %d dsc %d\n", slots, bpp, dsc); } @@ -238,13 +238,13 @@ static int intel_dp_dsc_mst_compute_link_config(struct intel_encoder *encoder, if (slots < 0) return slots; - last_compressed_bpp = crtc_state->dsc.compressed_bpp; + last_compressed_bpp = to_bpp_int(crtc_state->dsc.compressed_bpp_x16); - crtc_state->dsc.compressed_bpp = intel_dp_dsc_nearest_valid_bpp(i915, - last_compressed_bpp, - crtc_state->pipe_bpp); + crtc_state->dsc.compressed_bpp_x16 = + to_bpp_x16(intel_dp_dsc_nearest_valid_bpp(i915, last_compressed_bpp, + crtc_state->pipe_bpp)); - if (crtc_state->dsc.compressed_bpp != last_compressed_bpp) + if (crtc_state->dsc.compressed_bpp_x16 != to_bpp_x16(last_compressed_bpp)) need_timeslot_recalc = true; /* @@ -253,14 +253,14 @@ static int intel_dp_dsc_mst_compute_link_config(struct intel_encoder *encoder, */ if (need_timeslot_recalc) { slots = intel_dp_mst_find_vcpi_slots_for_bpp(encoder, crtc_state, - crtc_state->dsc.compressed_bpp, - crtc_state->dsc.compressed_bpp, + to_bpp_int(crtc_state->dsc.compressed_bpp_x16), + to_bpp_int(crtc_state->dsc.compressed_bpp_x16), limits, conn_state, 2 * 3, true); if (slots < 0) return slots; } - intel_link_compute_m_n(crtc_state->dsc.compressed_bpp, + intel_link_compute_m_n(to_bpp_int(crtc_state->dsc.compressed_bpp_x16), crtc_state->lane_count, adjusted_mode->crtc_clock, crtc_state->port_clock, diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.c b/drivers/gpu/drm/i915/display/intel_vdsc.c index b24601d0b2c5..bfc41972a0bb 100644 --- a/drivers/gpu/drm/i915/display/intel_vdsc.c +++ b/drivers/gpu/drm/i915/display/intel_vdsc.c @@ -248,7 +248,7 @@ 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 = pipe_config->dsc.compressed_bpp; + u16 compressed_bpp = to_bpp_int(pipe_config->dsc.compressed_bpp_x16); int err; int ret; @@ -878,7 +878,7 @@ static void intel_dsc_get_pps_config(struct intel_crtc_state *crtc_state) if (vdsc_cfg->native_420) vdsc_cfg->bits_per_pixel >>= 1; - crtc_state->dsc.compressed_bpp = vdsc_cfg->bits_per_pixel >> 4; + crtc_state->dsc.compressed_bpp_x16 = vdsc_cfg->bits_per_pixel; /* PPS_2 */ intel_dsc_read_and_verify_pps_reg(crtc_state, 2, &pps_temp); From patchwork Mon Sep 11 05:05:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Golani, Mitulkumar Ajitkumar" X-Patchwork-Id: 13378774 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 59BC6EE57DF for ; Mon, 11 Sep 2023 05:11:38 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BDE3D10E059; Mon, 11 Sep 2023 05:11:37 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4FA3F10E059 for ; Mon, 11 Sep 2023 05:11:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694409096; x=1725945096; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=3z6Bpu8pucpZitg6FyXXFewLnWacSX+9HCV+Kxj7frk=; b=iQWNHHus+eetG9dhfYVSr0N2oo4GCel3rR0PW0w+WDBkSv0oHAzYEoAS 9iEsLZ8/ghziP2vrsI8tOkWckwjKrji9PXmIUY9JOilgljhed0/JBX8bc lxeH+ddVdE8sPvM3d+Iy/wmAiU05kleId5N+nh7ey4cMXDUXSmuopboIM dOCFgY8K6ZValBPWhh89nmgAzdfDDYDIMqd3PUNTVde0yQU0ft5IqAAC/ bEOFxzD92wD+kgj35dClzTtKIEL2rmOfQpy89htqdZldMO/PvNe4mUJey 3+9IxGTRU7IyNycBLIz8/uRbpz5An0nRyebme/7DXyZRpbPQz6/ofcBwm A==; X-IronPort-AV: E=McAfee;i="6600,9927,10829"; a="377911988" X-IronPort-AV: E=Sophos;i="6.02,243,1688454000"; d="scan'208";a="377911988" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Sep 2023 22:11:35 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10829"; a="808692864" X-IronPort-AV: E=Sophos;i="6.02,243,1688454000"; d="scan'208";a="808692864" Received: from mgolanimitul-x299-ud4-pro.iind.intel.com ([10.190.239.114]) by fmsmga008.fm.intel.com with ESMTP; 10 Sep 2023 22:11:16 -0700 From: Mitul Golani To: intel-gfx@lists.freedesktop.org Date: Mon, 11 Sep 2023 10:35:44 +0530 Message-Id: <20230911050549.763538-4-mitulkumar.ajitkumar.golani@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230911050549.763538-1-mitulkumar.ajitkumar.golani@intel.com> References: <20230911050549.763538-1-mitulkumar.ajitkumar.golani@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 3/8] drm/i915/display: Consider fractional vdsc bpp while computing m_n values X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Ankit Nautiyal MTL+ supports fractional compressed bits_per_pixel, with precision of 1/16. This compressed bpp is stored in U6.4 format. Accommodate this precision while computing m_n values. Signed-off-by: Ankit Nautiyal Reviewed-by: Suraj Kandpal --- drivers/gpu/drm/i915/display/intel_display.c | 6 +++++- drivers/gpu/drm/i915/display/intel_display.h | 2 +- drivers/gpu/drm/i915/display/intel_dp.c | 5 +++-- drivers/gpu/drm/i915/display/intel_dp_mst.c | 6 ++++-- drivers/gpu/drm/i915/display/intel_fdi.c | 2 +- 5 files changed, 14 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index afcbdd4f105a..b37aeac961f4 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -2380,10 +2380,14 @@ void intel_link_compute_m_n(u16 bits_per_pixel, int nlanes, int pixel_clock, int link_clock, struct intel_link_m_n *m_n, - bool fec_enable) + bool fec_enable, + bool is_dsc_fractional_bpp) { u32 data_clock = bits_per_pixel * pixel_clock; + if (is_dsc_fractional_bpp) + data_clock = DIV_ROUND_UP(bits_per_pixel * pixel_clock, 16); + if (fec_enable) data_clock = intel_dp_mode_to_fec_clock(data_clock); diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h index 49ac8473b988..a4c4ca3cad65 100644 --- a/drivers/gpu/drm/i915/display/intel_display.h +++ b/drivers/gpu/drm/i915/display/intel_display.h @@ -398,7 +398,7 @@ u8 intel_calc_active_pipes(struct intel_atomic_state *state, void intel_link_compute_m_n(u16 bpp, int nlanes, int pixel_clock, int link_clock, struct intel_link_m_n *m_n, - bool fec_enable); + bool fec_enable, bool is_dsc_fractional_bpp); u32 intel_plane_fb_max_stride(struct drm_i915_private *dev_priv, u32 pixel_format, u64 modifier); enum drm_mode_status diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 9b88ac3a73c7..d13fa2749eaf 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -2558,7 +2558,7 @@ intel_dp_drrs_compute_config(struct intel_connector *connector, intel_link_compute_m_n(link_bpp, pipe_config->lane_count, pixel_clock, pipe_config->port_clock, &pipe_config->dp_m2_n2, - pipe_config->fec_enable); + pipe_config->fec_enable, false); /* FIXME: abstract this better */ if (pipe_config->splitter.enable) @@ -2737,7 +2737,8 @@ intel_dp_compute_config(struct intel_encoder *encoder, adjusted_mode->crtc_clock, pipe_config->port_clock, &pipe_config->dp_m_n, - pipe_config->fec_enable); + pipe_config->fec_enable, + pipe_config->dsc.compression_enable); /* FIXME: abstract this better */ if (pipe_config->splitter.enable) diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c index 68a81f10e772..68630925a0b9 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c @@ -171,7 +171,8 @@ static int intel_dp_mst_compute_link_config(struct intel_encoder *encoder, adjusted_mode->crtc_clock, crtc_state->port_clock, &crtc_state->dp_m_n, - crtc_state->fec_enable); + crtc_state->fec_enable, + false); crtc_state->dp_m_n.tu = slots; return 0; @@ -265,7 +266,8 @@ static int intel_dp_dsc_mst_compute_link_config(struct intel_encoder *encoder, adjusted_mode->crtc_clock, crtc_state->port_clock, &crtc_state->dp_m_n, - crtc_state->fec_enable); + crtc_state->fec_enable, + crtc_state->dsc.compression_enable); crtc_state->dp_m_n.tu = slots; return 0; diff --git a/drivers/gpu/drm/i915/display/intel_fdi.c b/drivers/gpu/drm/i915/display/intel_fdi.c index e12b46a84fa1..15fddabf7c2e 100644 --- a/drivers/gpu/drm/i915/display/intel_fdi.c +++ b/drivers/gpu/drm/i915/display/intel_fdi.c @@ -259,7 +259,7 @@ int ilk_fdi_compute_config(struct intel_crtc *crtc, pipe_config->fdi_lanes = lane; intel_link_compute_m_n(pipe_config->pipe_bpp, lane, fdi_dotclock, - link_bw, &pipe_config->fdi_m_n, false); + link_bw, &pipe_config->fdi_m_n, false, false); ret = ilk_check_fdi_lanes(dev, crtc->pipe, pipe_config); if (ret == -EDEADLK) From patchwork Mon Sep 11 05:05:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Golani, Mitulkumar Ajitkumar" X-Patchwork-Id: 13378782 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DB11CEE801F for ; Mon, 11 Sep 2023 05:11:50 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0C99910E13C; Mon, 11 Sep 2023 05:11:43 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7C97610E059 for ; Mon, 11 Sep 2023 05:11:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694409096; x=1725945096; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ezSl3Z0zNEQUEwuaHjbGhz1AmS6NTTWlhTzpK4GcztY=; b=Q0q57VOBsZcqhD0G+p3x0oKBs5H3X0Wm6j+eWMUbmJv5l4JDEOLV6WvS BNcx++914e3jK1OQJupykb9S/Wu1CfVHRV7+IooXu95BH0bDpfnCTXary mft5FXQ9G/jXGAL/dwEPyWsvNR2EJ3tAOgesrlhxerHjQXQz6UHfNrJsf nTP6MWA6uZdoDJsI7REX5E1oyaWNzMfKiJx6q/B0UQqIrBe2i8hrRztKj fhOtoq6V7QEvFm4/ACEhqTX7Iif70N9fMGWy7x/18Wxn5rOpCMyv+TJrX bxhx845qR2KDXrmTvkW0NGD7oy48tr+v3Y0sF2jo2IXFjrBlTUJReQnrH A==; X-IronPort-AV: E=McAfee;i="6600,9927,10829"; a="377911991" X-IronPort-AV: E=Sophos;i="6.02,243,1688454000"; d="scan'208";a="377911991" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Sep 2023 22:11:35 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10829"; a="808692867" X-IronPort-AV: E=Sophos;i="6.02,243,1688454000"; d="scan'208";a="808692867" Received: from mgolanimitul-x299-ud4-pro.iind.intel.com ([10.190.239.114]) by fmsmga008.fm.intel.com with ESMTP; 10 Sep 2023 22:11:18 -0700 From: Mitul Golani To: intel-gfx@lists.freedesktop.org Date: Mon, 11 Sep 2023 10:35:45 +0530 Message-Id: <20230911050549.763538-5-mitulkumar.ajitkumar.golani@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230911050549.763538-1-mitulkumar.ajitkumar.golani@intel.com> References: <20230911050549.763538-1-mitulkumar.ajitkumar.golani@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 4/8] drm/i915/audio : Consider fractional vdsc bpp while computing tu_data X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Ankit Nautiyal MTL+ supports fractional compressed bits_per_pixel, with precision of 1/16. This compressed bpp is stored in U6.4 format. Accommodate the precision during calculation of transfer unit data for hblank_early calculation. v2: -Fixed tu_data calculation while dealing with U6.4 format. (Stan) Signed-off-by: Ankit Nautiyal Reviewed-by: Suraj Kandpal --- drivers/gpu/drm/i915/display/intel_audio.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c index aa93ccd6c2aa..cfbaa7006905 100644 --- a/drivers/gpu/drm/i915/display/intel_audio.c +++ b/drivers/gpu/drm/i915/display/intel_audio.c @@ -521,14 +521,14 @@ static unsigned int calc_hblank_early_prog(struct intel_encoder *encoder, unsigned int link_clks_available, link_clks_required; unsigned int tu_data, tu_line, link_clks_active; unsigned int h_active, h_total, hblank_delta, pixel_clk; - unsigned int fec_coeff, cdclk, vdsc_bpp; + unsigned int fec_coeff, cdclk, vdsc_bppx16; unsigned int link_clk, lanes; unsigned int hblank_rise; h_active = crtc_state->hw.adjusted_mode.crtc_hdisplay; h_total = crtc_state->hw.adjusted_mode.crtc_htotal; pixel_clk = crtc_state->hw.adjusted_mode.crtc_clock; - vdsc_bpp = to_bpp_int(crtc_state->dsc.compressed_bpp_x16); + vdsc_bppx16 = crtc_state->dsc.compressed_bpp_x16; cdclk = i915->display.cdclk.hw.cdclk; /* fec= 0.972261, using rounding multiplier of 1000000 */ fec_coeff = 972261; @@ -536,10 +536,10 @@ static unsigned int calc_hblank_early_prog(struct intel_encoder *encoder, lanes = crtc_state->lane_count; drm_dbg_kms(&i915->drm, "h_active = %u link_clk = %u :" - "lanes = %u vdsc_bpp = %u cdclk = %u\n", - h_active, link_clk, lanes, vdsc_bpp, cdclk); + "lanes = %u vdsc_bppx16 = %u cdclk = %u\n", + h_active, link_clk, lanes, vdsc_bppx16, cdclk); - if (WARN_ON(!link_clk || !pixel_clk || !lanes || !vdsc_bpp || !cdclk)) + if (WARN_ON(!link_clk || !pixel_clk || !lanes || !vdsc_bppx16 || !cdclk)) return 0; link_clks_available = (h_total - h_active) * link_clk / pixel_clk - 28; @@ -551,8 +551,8 @@ static unsigned int calc_hblank_early_prog(struct intel_encoder *encoder, hblank_delta = DIV64_U64_ROUND_UP(mul_u32_u32(5 * (link_clk + cdclk), pixel_clk), mul_u32_u32(link_clk, cdclk)); - tu_data = div64_u64(mul_u32_u32(pixel_clk * vdsc_bpp * 8, 1000000), - mul_u32_u32(link_clk * lanes, fec_coeff)); + tu_data = div64_u64(mul_u32_u32(pixel_clk * vdsc_bppx16 * 8, 1000000), + mul_u32_u32(link_clk * lanes * 16, fec_coeff)); tu_line = div64_u64(h_active * mul_u32_u32(link_clk, fec_coeff), mul_u32_u32(64 * pixel_clk, 1000000)); link_clks_active = (tu_line - 1) * 64 + tu_data; From patchwork Mon Sep 11 05:05:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Golani, Mitulkumar Ajitkumar" X-Patchwork-Id: 13378781 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2E6ACEE57DF for ; Mon, 11 Sep 2023 05:11:50 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E83A010E137; Mon, 11 Sep 2023 05:11:42 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id 65F0610E104 for ; Mon, 11 Sep 2023 05:11:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694409096; x=1725945096; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=R7dwirASqjDNQxR0gkeEcxoS4xciE/+LwIulMGOJNDg=; b=drT/i6kRe9aTTXRKwiLP8sI/yhnGU/Xm66JL9J/ZtWE35/Tk2OTCyl7T TwLGN0XO46cqJrbicNVc6aVCu+Zx7luD9h/cXz1Zh6WhJxZtN3mhWgRVA 3q+zW0hNk1q177MuAVf8DAO3/eQV3S4Xokq1eWfeUIcnQxj+cVm+ZJdDJ Z2wKDvyTAUK01UybSTeFTRLhKqxR3Iv7LxcGlrq6Dq7k758xcecCmv78D t4dWQDSLm1/jRvD8kpGXY4miNLT+0g9Xkd1dpivLiq0H7Y8C1Mg9g9ufm SPLQuYpoud/8sUrAYzTeLT68gNNmRiCW3GK8kbwDGR4wMdy/I+0W7jps6 w==; X-IronPort-AV: E=McAfee;i="6600,9927,10829"; a="377911989" X-IronPort-AV: E=Sophos;i="6.02,243,1688454000"; d="scan'208";a="377911989" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Sep 2023 22:11:35 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10829"; a="808692869" X-IronPort-AV: E=Sophos;i="6.02,243,1688454000"; d="scan'208";a="808692869" Received: from mgolanimitul-x299-ud4-pro.iind.intel.com ([10.190.239.114]) by fmsmga008.fm.intel.com with ESMTP; 10 Sep 2023 22:11:20 -0700 From: Mitul Golani To: intel-gfx@lists.freedesktop.org Date: Mon, 11 Sep 2023 10:35:46 +0530 Message-Id: <20230911050549.763538-6-mitulkumar.ajitkumar.golani@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230911050549.763538-1-mitulkumar.ajitkumar.golani@intel.com> References: <20230911050549.763538-1-mitulkumar.ajitkumar.golani@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 5/8] drm/i915/dsc/mtl: Add support for fractional bpp X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Vandita Kulkarni Consider the fractional bpp while reading the qp values. v2: Use helpers for fractional, integral bits of bits_per_pixel. (Suraj) Signed-off-by: Vandita Kulkarni Signed-off-by: Ankit Nautiyal Reviewed-by: Suraj Kandpal --- .../gpu/drm/i915/display/intel_qp_tables.c | 3 --- drivers/gpu/drm/i915/display/intel_vdsc.c | 25 +++++++++++++++---- 2 files changed, 20 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_qp_tables.c b/drivers/gpu/drm/i915/display/intel_qp_tables.c index 543cdc46aa1d..600c815e37e4 100644 --- a/drivers/gpu/drm/i915/display/intel_qp_tables.c +++ b/drivers/gpu/drm/i915/display/intel_qp_tables.c @@ -34,9 +34,6 @@ * These qp tables are as per the C model * and it has the rows pointing to bpps which increment * in steps of 0.5 - * We do not support fractional bpps as of today, - * hence we would skip the fractional bpps during - * our references for qp calclulations. */ static const u8 rc_range_minqp444_8bpc[DSC_NUM_BUF_RANGES][RC_RANGE_QP444_8BPC_MAX_NUM_BPP] = { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.c b/drivers/gpu/drm/i915/display/intel_vdsc.c index bfc41972a0bb..d7cfb2446c13 100644 --- a/drivers/gpu/drm/i915/display/intel_vdsc.c +++ b/drivers/gpu/drm/i915/display/intel_vdsc.c @@ -77,8 +77,8 @@ intel_vdsc_set_min_max_qp(struct drm_dsc_config *vdsc_cfg, int buf, 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 bpp = vdsc_cfg->bits_per_pixel >> 4; int qp_bpc_modifier = (bpc - 8) * 2; int uncompressed_bpg_rate; int first_line_bpg_offset; @@ -148,7 +148,13 @@ calculate_rc_params(struct drm_dsc_config *vdsc_cfg) 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; @@ -178,6 +184,9 @@ calculate_rc_params(struct drm_dsc_config *vdsc_cfg) 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_dec(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 }; @@ -191,7 +200,14 @@ calculate_rc_params(struct drm_dsc_config *vdsc_cfg) 10, 8, 6, 4, 2, 0, -2, -4, -6, -8, -10, -10, -12, -12, -12 }; - bpp_i = (2 * (bpp - 6)); + /* + * 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; @@ -279,8 +295,7 @@ int intel_dsc_compute_params(struct intel_crtc_state *pipe_config) /* Gen 11 does not support VBR */ vdsc_cfg->vbr_enable = false; - /* Gen 11 only supports integral values of bpp */ - vdsc_cfg->bits_per_pixel = compressed_bpp << 4; + 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 From patchwork Mon Sep 11 05:05:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Golani, Mitulkumar Ajitkumar" X-Patchwork-Id: 13378780 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3F8A5EEB580 for ; Mon, 11 Sep 2023 05:11:49 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C2A2710E128; Mon, 11 Sep 2023 05:11:41 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id A9F6110E10C for ; Mon, 11 Sep 2023 05:11:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694409096; x=1725945096; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=naB82RsMqOu0ideJWUuRTmVi0whH441E+49lOWTb56Q=; b=PDM9iW6IuNtl1I76svqekd0X1bsmgEahwFBgxb4nY9qhchk3K51LaUYS DE/RpLJqICU6p9E8bmbT6jLUuXaSI5K7F825YamW7Tg5CRfC2hsopRq+L Pmf/16cuJYIZsMrW1+9P3XeYE4KQN59cyatF799Mhx7PlQ78GpO04M9pc aMHlKwwdJjAB/AOeyuqfgx3kOIsg4VFKvs5DjgcK0VxMccCwihnXOUPq8 M85IdUdNH8kbZg2DJCW2sPQeTcxJ3EXTXoquf0INTv0171NwH1vuszl/X lgN8D2Kyc4QReSfhWXhwHT3s7giwMnXAxLyHTxdWHC2XXWwLyoK47LNR3 Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10829"; a="377911993" X-IronPort-AV: E=Sophos;i="6.02,243,1688454000"; d="scan'208";a="377911993" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Sep 2023 22:11:36 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10829"; a="808692871" X-IronPort-AV: E=Sophos;i="6.02,243,1688454000"; d="scan'208";a="808692871" Received: from mgolanimitul-x299-ud4-pro.iind.intel.com ([10.190.239.114]) by fmsmga008.fm.intel.com with ESMTP; 10 Sep 2023 22:11:22 -0700 From: Mitul Golani To: intel-gfx@lists.freedesktop.org Date: Mon, 11 Sep 2023 10:35:47 +0530 Message-Id: <20230911050549.763538-7-mitulkumar.ajitkumar.golani@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230911050549.763538-1-mitulkumar.ajitkumar.golani@intel.com> References: <20230911050549.763538-1-mitulkumar.ajitkumar.golani@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 6/8] drm/i915/dp: Iterate over output bpp with fractional step size X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Ankit Nautiyal This patch adds support to iterate over compressed output bpp as per the fractional step, supported by DP sink. v2: -Avoid ending up with compressed bpp, same as pipe bpp. (Stan) Signed-off-by: Ankit Nautiyal Reviewed-by: Suraj Kandpal --- drivers/gpu/drm/i915/display/intel_dp.c | 37 +++++++++++++++---------- 1 file changed, 23 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index d13fa2749eaf..90c92f3dc62a 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -1715,15 +1715,15 @@ static bool intel_dp_dsc_supports_format(struct intel_dp *intel_dp, return drm_dp_dsc_sink_supports_format(intel_dp->dsc_dpcd, sink_dsc_format); } -static bool is_bw_sufficient_for_dsc_config(u16 compressed_bpp, u32 link_clock, +static bool is_bw_sufficient_for_dsc_config(u16 compressed_bppx16, u32 link_clock, u32 lane_count, u32 mode_clock, enum intel_output_format output_format, int timeslots) { u32 available_bw, required_bw; - available_bw = (link_clock * lane_count * timeslots) / 8; - required_bw = compressed_bpp * (intel_dp_mode_to_fec_clock(mode_clock)); + available_bw = (link_clock * lane_count * timeslots * 16) / 8; + required_bw = compressed_bppx16 * (intel_dp_mode_to_fec_clock(mode_clock)); return available_bw > required_bw; } @@ -1731,7 +1731,7 @@ static bool is_bw_sufficient_for_dsc_config(u16 compressed_bpp, u32 link_clock, static int dsc_compute_link_config(struct intel_dp *intel_dp, struct intel_crtc_state *pipe_config, struct link_config_limits *limits, - u16 compressed_bpp, + u16 compressed_bppx16, int timeslots) { const struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode; @@ -1746,8 +1746,8 @@ static int dsc_compute_link_config(struct intel_dp *intel_dp, for (lane_count = limits->min_lane_count; lane_count <= limits->max_lane_count; lane_count <<= 1) { - if (!is_bw_sufficient_for_dsc_config(compressed_bpp, link_rate, lane_count, - adjusted_mode->clock, + if (!is_bw_sufficient_for_dsc_config(compressed_bppx16, link_rate, + lane_count, adjusted_mode->clock, pipe_config->output_format, timeslots)) continue; @@ -1860,7 +1860,7 @@ icl_dsc_compute_link_config(struct intel_dp *intel_dp, ret = dsc_compute_link_config(intel_dp, pipe_config, limits, - valid_dsc_bpp[i], + valid_dsc_bpp[i] << 4, timeslots); if (ret == 0) { pipe_config->dsc.compressed_bpp_x16 = to_bpp_x16(valid_dsc_bpp[i]); @@ -1886,22 +1886,31 @@ xelpd_dsc_compute_link_config(struct intel_dp *intel_dp, int pipe_bpp, int timeslots) { - u16 compressed_bpp; + u8 bppx16_incr = drm_dp_dsc_sink_bpp_incr(intel_dp->dsc_dpcd); + struct drm_i915_private *i915 = dp_to_i915(intel_dp); + u16 compressed_bppx16; + u8 bppx16_step; int ret; + if (DISPLAY_VER(i915) < 14 || bppx16_incr <= 1) + bppx16_step = 16; + else + bppx16_step = 16 / bppx16_incr; + /* Compressed BPP should be less than the Input DSC bpp */ - dsc_max_bpp = min(dsc_max_bpp, pipe_bpp - 1); + dsc_max_bpp = min(dsc_max_bpp << 4, (pipe_bpp << 4) - bppx16_step); + dsc_min_bpp = dsc_min_bpp << 4; - for (compressed_bpp = dsc_max_bpp; - compressed_bpp >= dsc_min_bpp; - compressed_bpp--) { + for (compressed_bppx16 = dsc_max_bpp; + compressed_bppx16 >= dsc_min_bpp; + compressed_bppx16 -= bppx16_step) { ret = dsc_compute_link_config(intel_dp, pipe_config, limits, - compressed_bpp, + compressed_bppx16, timeslots); if (ret == 0) { - pipe_config->dsc.compressed_bpp_x16 = to_bpp_x16(compressed_bpp); + pipe_config->dsc.compressed_bpp_x16 = compressed_bppx16; return 0; } } From patchwork Mon Sep 11 05:05:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Golani, Mitulkumar Ajitkumar" X-Patchwork-Id: 13378779 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 62870EE7FF4 for ; Mon, 11 Sep 2023 05:11:48 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A0E5C10E11E; Mon, 11 Sep 2023 05:11:41 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id DEDBF10E104 for ; Mon, 11 Sep 2023 05:11:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694409096; x=1725945096; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=aK1QVZgyw+0NuZAKp2HBn5sabqZH1RI0cf69fncsThA=; b=J+V021BeSMNzjoYk0hgX3MlZBmgQbWqf3GIS0FQw1ODfcv7FrnMWYixj KwlSxSSgaqczT6PPVbcghsW5jU4PbW/IT+IumAIoaOubQilI/uj98Km6/ YlDgZbBhtjVZ6VEOh5P9NL0gqFs2fKGoVrh9IO+zeQdmqsP6vH80zqoLh PWS7N/XwBXwYrUnAxzgbne5r05+So5tQqNI2B69/m7Ep8Ycl5QV5dlRPK v7IWubS6kRC+FNTC1qXXfYF1A5Cf3nziGnS7lu565aQljZD3VVD4k77uB QxdwlVwSLDkNBO+pjv94MYJJqjwEgbcCsFw1o8cS9+MtshAHAexub5anR A==; X-IronPort-AV: E=McAfee;i="6600,9927,10829"; a="377911997" X-IronPort-AV: E=Sophos;i="6.02,243,1688454000"; d="scan'208";a="377911997" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Sep 2023 22:11:36 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10829"; a="808692873" X-IronPort-AV: E=Sophos;i="6.02,243,1688454000"; d="scan'208";a="808692873" Received: from mgolanimitul-x299-ud4-pro.iind.intel.com ([10.190.239.114]) by fmsmga008.fm.intel.com with ESMTP; 10 Sep 2023 22:11:24 -0700 From: Mitul Golani To: intel-gfx@lists.freedesktop.org Date: Mon, 11 Sep 2023 10:35:48 +0530 Message-Id: <20230911050549.763538-8-mitulkumar.ajitkumar.golani@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230911050549.763538-1-mitulkumar.ajitkumar.golani@intel.com> References: <20230911050549.763538-1-mitulkumar.ajitkumar.golani@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 7/8] drm/i915/dsc: Add debugfs entry to validate DSC fractional bpp X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Swati Sharma DSC_Sink_BPP_Precision entry is added to i915_dsc_fec_support_show to depict sink's precision. Also, new debugfs entry is created to enforce fractional bpp. If Force_DSC_Fractional_BPP_en is set then while iterating over output bpp with fractional step size we will continue if output_bpp is computed as integer. With this approach, we will be able to validate DSC with fractional bpp. Signed-off-by: Swati Sharma Signed-off-by: Ankit Nautiyal Reviewed-by: Suraj Kandpal --- .../drm/i915/display/intel_display_debugfs.c | 82 +++++++++++++++++++ .../drm/i915/display/intel_display_types.h | 1 + 2 files changed, 83 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c index f05b52381a83..d1b202e14e5f 100644 --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c @@ -1244,6 +1244,8 @@ static int i915_dsc_fec_support_show(struct seq_file *m, void *data) DP_DSC_YCbCr420_Native)), str_yes_no(drm_dp_dsc_sink_supports_format(intel_dp->dsc_dpcd, DP_DSC_YCbCr444))); + seq_printf(m, "DSC_Sink_BPP_Precision: %d\n", + drm_dp_dsc_sink_bpp_incr(intel_dp->dsc_dpcd)); seq_printf(m, "Force_DSC_Enable: %s\n", str_yes_no(intel_dp->force_dsc_en)); if (!intel_dp_is_edp(intel_dp)) @@ -1436,6 +1438,83 @@ static const struct file_operations i915_dsc_output_format_fops = { .write = i915_dsc_output_format_write }; +static int i915_dsc_fractional_bpp_show(struct seq_file *m, void *data) +{ + struct drm_connector *connector = m->private; + struct drm_device *dev = connector->dev; + struct drm_crtc *crtc; + struct intel_dp *intel_dp; + struct intel_encoder *encoder = intel_attached_encoder(to_intel_connector(connector)); + int ret; + + if (!encoder) + return -ENODEV; + + ret = drm_modeset_lock_single_interruptible(&dev->mode_config.connection_mutex); + if (ret) + return ret; + + crtc = connector->state->crtc; + if (connector->status != connector_status_connected || !crtc) { + ret = -ENODEV; + goto out; + } + + intel_dp = intel_attached_dp(to_intel_connector(connector)); + seq_printf(m, "Force_DSC_Fractional_BPP_Enable: %s\n", + str_yes_no(intel_dp->force_dsc_fractional_bpp_en)); + +out: drm_modeset_unlock(&dev->mode_config.connection_mutex); + + return ret; +} + +static ssize_t i915_dsc_fractional_bpp_write(struct file *file, + const char __user *ubuf, + size_t len, loff_t *offp) +{ + struct drm_connector *connector = + ((struct seq_file *)file->private_data)->private; + struct intel_encoder *encoder = intel_attached_encoder(to_intel_connector(connector)); + struct drm_i915_private *i915 = to_i915(encoder->base.dev); + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); + bool dsc_fractional_bpp_enable = false; + int ret; + + if (len == 0) + return 0; + + drm_dbg(&i915->drm, + "Copied %zu bytes from user to force fractional bpp for DSC\n", len); + + ret = kstrtobool_from_user(ubuf, len, &dsc_fractional_bpp_enable); + if (ret < 0) + return ret; + + drm_dbg(&i915->drm, "Got %s for DSC Fractional BPP Enable\n", + (dsc_fractional_bpp_enable) ? "true" : "false"); + intel_dp->force_dsc_fractional_bpp_en = dsc_fractional_bpp_enable; + + *offp += len; + + return len; +} + +static int i915_dsc_fractional_bpp_open(struct inode *inode, + struct file *file) +{ + return single_open(file, i915_dsc_fractional_bpp_show, inode->i_private); +} + +static const struct file_operations i915_dsc_fractional_bpp_fops = { + .owner = THIS_MODULE, + .open = i915_dsc_fractional_bpp_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .write = i915_dsc_fractional_bpp_write +}; + /* * Returns the Current CRTC's bpc. * Example usage: cat /sys/kernel/debug/dri/0/crtc-0/i915_current_bpc @@ -1513,6 +1592,9 @@ void intel_connector_debugfs_add(struct intel_connector *intel_connector) debugfs_create_file("i915_dsc_output_format", 0644, root, connector, &i915_dsc_output_format_fops); + + debugfs_create_file("i915_dsc_fractional_bpp", 0644, root, + connector, &i915_dsc_fractional_bpp_fops); } if (connector->connector_type == DRM_MODE_CONNECTOR_DSI || diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h index 9eb7b8912076..6e76f1274b0c 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -1797,6 +1797,7 @@ struct intel_dp { /* Display stream compression testing */ bool force_dsc_en; int force_dsc_output_format; + bool force_dsc_fractional_bpp_en; int force_dsc_bpc; bool hobl_failed; From patchwork Mon Sep 11 05:05:49 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Golani, Mitulkumar Ajitkumar" X-Patchwork-Id: 13378778 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 551F4EE57DF for ; Mon, 11 Sep 2023 05:11:47 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8615A10E11D; Mon, 11 Sep 2023 05:11:41 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id C290410E059 for ; Mon, 11 Sep 2023 05:11:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694409096; x=1725945096; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=imUaRW1yH6mGu6a26nHxfCVHfLfWt8ljB8rUUKy/OHQ=; b=dlIPhZ9MBgKu5hpzyySxj8+Fc3xLSa5BsX7esOhjuJpB1I/s+irZXEpV 3dAJcJyc8DgYSTXyuf8lQFjO37FHKVWXf5WzxGmoaKbTUp+fvJFGRUYOW /p+esqJPIOfHQruiX5iKG4IXwfIz53OW8il1EovUnIWmaJdtoWqTb/wKe 5InawVH4A90qfSi0joeqiOXl/k6Utyk92VFbhuj/ZQNQYh2voFDMCLbEq Trp/nJSSwejtifQXPwOEmFRGbewpi42u3UYth8aIwXaLuLoldYLGYub5b 0w1f0mTFUVk2oVfc7ATEvd7NWmdH2T1T1jh/BeYuY/8g5D7blHv9pXNdU w==; X-IronPort-AV: E=McAfee;i="6600,9927,10829"; a="377911995" X-IronPort-AV: E=Sophos;i="6.02,243,1688454000"; d="scan'208";a="377911995" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Sep 2023 22:11:36 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10829"; a="808692875" X-IronPort-AV: E=Sophos;i="6.02,243,1688454000"; d="scan'208";a="808692875" Received: from mgolanimitul-x299-ud4-pro.iind.intel.com ([10.190.239.114]) by fmsmga008.fm.intel.com with ESMTP; 10 Sep 2023 22:11:26 -0700 From: Mitul Golani To: intel-gfx@lists.freedesktop.org Date: Mon, 11 Sep 2023 10:35:49 +0530 Message-Id: <20230911050549.763538-9-mitulkumar.ajitkumar.golani@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230911050549.763538-1-mitulkumar.ajitkumar.golani@intel.com> References: <20230911050549.763538-1-mitulkumar.ajitkumar.golani@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 8/8] drm/i915/dsc: Allow DSC only with fractional bpp when forced from debugfs X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Swati Sharma If force_dsc_fractional_bpp_en is set through debugfs allow DSC iff compressed bpp is fractional. Continue if the computed compressed bpp turns out to be a integer. v2: -Use helpers for fractional, integral bits of bits_per_pixel. (Suraj) -Fix comment (Suraj) Signed-off-by: Swati Sharma Reviewed-by: Suraj Kandpal --- drivers/gpu/drm/i915/display/intel_dp.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 90c92f3dc62a..f6bfbd89bc3f 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -1904,6 +1904,9 @@ xelpd_dsc_compute_link_config(struct intel_dp *intel_dp, for (compressed_bppx16 = dsc_max_bpp; compressed_bppx16 >= dsc_min_bpp; compressed_bppx16 -= bppx16_step) { + if (intel_dp->force_dsc_fractional_bpp_en && + !to_bpp_frac_dec(compressed_bppx16)) + continue; ret = dsc_compute_link_config(intel_dp, pipe_config, limits, @@ -1911,6 +1914,10 @@ xelpd_dsc_compute_link_config(struct intel_dp *intel_dp, timeslots); if (ret == 0) { pipe_config->dsc.compressed_bpp_x16 = compressed_bppx16; + if (intel_dp->force_dsc_fractional_bpp_en && + to_bpp_frac_dec(compressed_bppx16)) + drm_dbg_kms(&i915->drm, "Forcing DSC fractional bpp\n"); + return 0; } }