From patchwork Fri May 21 12:49:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vinod Koul X-Patchwork-Id: 444734 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DAB3BC433ED for ; Fri, 21 May 2021 12:50:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C4829613D9 for ; Fri, 21 May 2021 12:50:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231246AbhEUMwS (ORCPT ); Fri, 21 May 2021 08:52:18 -0400 Received: from mail.kernel.org ([198.145.29.99]:34042 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234783AbhEUMv6 (ORCPT ); Fri, 21 May 2021 08:51:58 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 116D3613DF; Fri, 21 May 2021 12:50:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1621601434; bh=IJdaAJsGZtOuXPGkO/yJepto4E3r/nhHQEJSn5d6nzc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mg84n5785SSsuasRZZAL7KfM6X/vWVQVg9V4H5Quty+P6KbLN0DakaqNPmWvrRKFu MtJ6NwrNDzqDSwNje+ToUdKiXLh9c7dK4OSGyb+QcoExyAkF2XeBojqW8P+WANAiKw X9IXsZakJg+GbmftXTQ203RW44BY0+742Rar42RS0ZbJuyNZ0faBxZo1zwnUxBnLcN Tj7KkoZVXyz/LmFpURNZJ/oVbrK5oJA9jHVhHdsuRyowEFxn242tKi+3BdMf+g3EmM SH9c4RzzVyZNlPHfSJlNXDmeTs0VYjgk5J+UdlwQnhiDkIjJkleNfKsSK8mnlfZYtM VopQOOR+1OEkg== From: Vinod Koul To: Rob Clark Cc: linux-arm-msm@vger.kernel.org, Bjorn Andersson , Vinod Koul , David Airlie , Daniel Vetter , Jonathan Marek , Dmitry Baryshkov , Abhinav Kumar , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org Subject: [RFC PATCH 05/13] drm/msm/dsi: add support for dsc data Date: Fri, 21 May 2021 18:19:37 +0530 Message-Id: <20210521124946.3617862-9-vkoul@kernel.org> X-Mailer: git-send-email 2.26.3 In-Reply-To: <20210521124946.3617862-1-vkoul@kernel.org> References: <20210521124946.3617862-1-vkoul@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org DSC needs some configuration from device tree, add support to read and store these params and add DSC structures in msm_drv Signed-off-by: Vinod Koul --- drivers/gpu/drm/msm/dsi/dsi_host.c | 171 +++++++++++++++++++++++++++++ drivers/gpu/drm/msm/msm_drv.h | 32 ++++++ 2 files changed, 203 insertions(+) diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index 8a10e4343281..e0c0f627d15e 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -156,6 +156,7 @@ struct msm_dsi_host { struct regmap *sfpb; struct drm_display_mode *mode; + struct msm_display_dsc_config *dsc; /* connected device info */ struct device_node *device_node; @@ -1744,6 +1745,168 @@ static int dsi_host_parse_lane_data(struct msm_dsi_host *msm_host, return -EINVAL; } +static u32 dsi_dsc_rc_buf_thresh[DSC_NUM_BUF_RANGES - 1] = { + 0x0e, 0x1c, 0x2a, 0x38, 0x46, 0x54, 0x62, + 0x69, 0x70, 0x77, 0x79, 0x7b, 0x7d, 0x7e +}; + +/* only 8bpc, 8bpp added */ +static char min_qp[DSC_NUM_BUF_RANGES] = { + 0, 0, 1, 1, 3, 3, 3, 3, 3, 3, 5, 5, 5, 7, 13 +}; + +static char max_qp[DSC_NUM_BUF_RANGES] = { + 4, 4, 5, 6, 7, 7, 7, 8, 9, 10, 11, 12, 13, 13, 15 +}; + +static char bpg_offset[DSC_NUM_BUF_RANGES] = { + 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -12, -12, -12, -12 +}; + +static int dsi_populate_dsc_params(struct msm_display_dsc_config *dsc) +{ + int i; + + dsc->drm.rc_model_size = 8192; + dsc->drm.first_line_bpg_offset = 15; + dsc->drm.rc_edge_factor = 6; + dsc->drm.rc_tgt_offset_high = 3; + dsc->drm.rc_tgt_offset_low = 3; + dsc->drm.simple_422 = 0; + dsc->drm.convert_rgb = 1; + dsc->drm.vbr_enable = 0; + + /* handle only bpp = bpc = 8 */ + for (i = 0; i < DSC_NUM_BUF_RANGES - 1 ; i++) + dsc->drm.rc_buf_thresh[i] = dsi_dsc_rc_buf_thresh[i]; + + for (i = 0; i < DSC_NUM_BUF_RANGES; i++) { + dsc->drm.rc_range_params[i].range_min_qp = min_qp[i]; + dsc->drm.rc_range_params[i].range_max_qp = max_qp[i]; + dsc->drm.rc_range_params[i].range_bpg_offset = bpg_offset[i]; + } + + dsc->drm.initial_offset = 6144; + dsc->drm.initial_xmit_delay = 512; + dsc->drm.initial_scale_value = 32; + dsc->drm.first_line_bpg_offset = 12; + dsc->drm.line_buf_depth = dsc->drm.bits_per_component + 1; + + /* bpc 8 */ + dsc->drm.flatness_min_qp = 3; + dsc->drm.flatness_max_qp = 12; + dsc->det_thresh_flatness = 7; + dsc->drm.rc_quant_incr_limit0 = 11; + dsc->drm.rc_quant_incr_limit1 = 11; + dsc->drm.mux_word_size = DSC_MUX_WORD_SIZE_8_10_BPC; + + /* FIXME: need to call drm_dsc_compute_rc_parameters() so that rest of + * params are calculated + */ + + i = dsc->drm.slice_width % 3; + switch (i) { + case 0: + dsc->slice_last_group_size = 2; + break; + + case 1: + dsc->slice_last_group_size = 0; + break; + + case 2: + dsc->slice_last_group_size = 0; + break; + + default: + break; + } + + return 0; +} + +static int dsi_host_parse_dsc(struct msm_dsi_host *msm_host, + struct device_node *np) +{ + struct device *dev = &msm_host->pdev->dev; + struct msm_display_dsc_config *dsc; + bool is_dsc_enabled; + u32 data; + int ret; + + is_dsc_enabled = of_property_read_bool(np, "qcom,mdss-dsc-enabled"); + + if (!is_dsc_enabled) + return 0; + + dsc = kzalloc(sizeof(*dsc), GFP_KERNEL); + if (!dsc) + return -ENOMEM; + + ret = of_property_read_u32(np, "qcom,mdss-dsc-version", &data); + if (ret) { + dsc->drm.dsc_version_major = 0x1; + dsc->drm.dsc_version_minor = 0x1; + } else { + dsc->drm.dsc_version_major = (data >> 4) & 0xf; + dsc->drm.dsc_version_minor = data & 0xf; + } + + ret = of_property_read_u32(np, "qcom,mdss-scr-version", &data); + if (ret) + dsc->scr_rev = 0; + else + dsc->scr_rev = data & 0xff; + + ret = of_property_read_u32(np, "qcom,mdss-slice-height", &data); + if (ret) { + DRM_DEV_ERROR(dev, "failed to read dsc slice height\n"); + goto err; + } + dsc->drm.slice_height = data; + + ret = of_property_read_u32(np, "qcom,mdss-slice-width", &data); + if (ret) { + DRM_DEV_ERROR(dev, "failed to read dsc slice width\n"); + goto err; + } + dsc->drm.slice_width = data; + + ret = of_property_read_u32(np, "qcom,mdss-slice-per-pkt", &data); + if (ret) { + DRM_DEV_ERROR(dev, "failed to read mdss-slice-per-pkt\n"); + goto err; + } + dsc->slice_per_pkt = data; + + ret = of_property_read_u32(np, "qcom,mdss-bit-per-component", &data); + if (ret) { + DRM_DEV_ERROR(dev, "failed to read mdss-bit-per-component\n"); + goto err; + } + dsc->drm.bits_per_component = data; + + ret = of_property_read_u32(np, "qcom,mdss-bit-per-pixel", &data); + if (ret) { + DRM_DEV_ERROR(dev, "failed to read bit-per-pixel\n"); + goto err; + } + dsc->drm.bits_per_pixel = data; + + dsc->drm.block_pred_enable = of_property_read_bool(np, + "qcom,mdss-block-prediction-enable"); + + dsi_populate_dsc_params(dsc); + + msm_host->dsc = dsc; + + return 0; + +err: + kfree(dsc); + return ret; +} + static int dsi_host_parse_dt(struct msm_dsi_host *msm_host) { struct device *dev = &msm_host->pdev->dev; @@ -1763,6 +1926,14 @@ static int dsi_host_parse_dt(struct msm_dsi_host *msm_host) return 0; } + ret = dsi_host_parse_dsc(msm_host, np); + if (ret) { + DRM_DEV_ERROR(dev, "%s: invalid dsc configuration %d\n", + __func__, ret); + ret = -EINVAL; + goto err; + } + ret = dsi_host_parse_lane_data(msm_host, endpoint); if (ret) { DRM_DEV_ERROR(dev, "%s: invalid lane configuration %d\n", diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index 2668941df529..26661dd43936 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -30,6 +30,7 @@ #include #include #include +#include #include #include @@ -70,6 +71,16 @@ enum msm_mdp_plane_property { #define MSM_GPU_MAX_RINGS 4 #define MAX_H_TILES_PER_DISPLAY 2 +/** + * enum msm_display_compression_type - compression method used for pixel stream + * @MSM_DISPLAY_COMPRESSION_NONE: Pixel data is not compressed + * @MSM_DISPLAY_COMPRESSION_DSC: DSC compresison is used + */ +enum msm_display_compression_type { + MSM_DISPLAY_COMPRESSION_NONE, + MSM_DISPLAY_COMPRESSION_DSC, +}; + /** * enum msm_display_caps - features/capabilities supported by displays * @MSM_DISPLAY_CAP_VID_MODE: Video or "active" mode supported @@ -134,6 +145,24 @@ struct msm_drm_thread { struct kthread_worker *worker; }; +/* DSC config */ +struct msm_display_dsc_config { + struct drm_dsc_config drm; + u8 scr_rev; + + u32 initial_lines; + u32 pkt_per_line; + u32 bytes_in_slice; + u32 bytes_per_pkt; + u32 eol_byte_num; + u32 pclk_per_line; + u32 slice_last_group_size; + u32 slice_per_pkt; + u32 det_thresh_flatness; + u32 extra_width; + u32 pps_delay_ms; +}; + struct msm_drm_private { struct drm_device *dev; @@ -227,6 +256,9 @@ struct msm_drm_private { /* Properties */ struct drm_property *plane_property[PLANE_PROP_MAX_NUM]; + /* DSC configuration */ + struct msm_display_dsc_config *dsc; + /* VRAM carveout, used when no IOMMU: */ struct { unsigned long size;