From patchwork Thu Jul 15 06:51:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vinod Koul X-Patchwork-Id: 477399 Delivered-To: patch@linaro.org Received: by 2002:a02:c94a:0:0:0:0:0 with SMTP id u10csp1408594jao; Wed, 14 Jul 2021 23:52:34 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzEXIeumtVuNw9rk7hKXEHF/rI1aVaro/C7J0OU2qu2mqNgFFvT5KCisTQsI03rjnJ6lGrq X-Received: by 2002:a17:90a:8404:: with SMTP id j4mr8461543pjn.66.1626331953904; Wed, 14 Jul 2021 23:52:33 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1626331953; cv=none; d=google.com; s=arc-20160816; b=AdXeCJIfOCpWa0HHzY+JH3GUFpmuewXlmgPipUd51c/TQEqsahJ3HnGkKFV74wbjb/ i9DimjpzFY3tUN63ImhF3Zmb+b+q6H64QUzFYgpvM5fS1xQyUnCcvdd9HTV8aBg4ZXuo 5qyv1lhvtoPyVdOLqCbTXEbm4UCK6DzS9fAGZozJBeRPXA49/Y5I0ybVr0DwyPetU9IL FF3EaNWK73QWcLteqLzwPpLis9F31fC2CypZBqp2Pq1EHmjTHLvLKglnWQ1wBy1npVsA i+UGha5f10gANlx6BHQHUtpd5b4GSsPwKWiW+Gvd+rs178rsLFDWrwzQemey0PgqLZWs SA3A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:cc:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:to:from :dkim-signature:delivered-to; bh=00qgm6KXyHDtZ4cSfCJ6Xccq2xP+KG9Pyjd2SHLxahI=; b=eIvSUlKTUOjOpEN34DuxNaJM1qGAVNUkL4tz0fMpN0KqiYm4qkEDAQIM9Eus43dzBR B91GkbxQ88XFG3V9eRiKgDCdrKnvK7MmDHK6gKvPkxp7ksSWIOYP/PePsDYjmF2C/2Gx VzTJ+iepOXLDPmjuEtYE9fG+PMxS3LpOa+11cgKmodyif5163qYF8J84nRFMNT4XCiCz EYSFyObicUNSFWqkUTBH3ZQqK8goW4881mzgpdBJf9InC/mkvKB26dPDV0c+3RdvDsMi szaL9AULzOtxRG+5LBI8CAw8/+A3z6Mbv6F60FxlU12DsiPFpWI9o1jZdKgTg/ui+61D M1xw== ARC-Authentication-Results: i=1; mx.google.com; dkim=fail header.i=@kernel.org header.s=k20201202 header.b=uvyQDp0U; spf=pass (google.com: best guess record for domain of dri-devel-bounces@lists.freedesktop.org designates 2610:10:20:722:a800:ff:fe36:1795 as permitted sender) smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from gabe.freedesktop.org (gabe.freedesktop.org. [2610:10:20:722:a800:ff:fe36:1795]) by mx.google.com with ESMTPS id x12si6413702pjo.110.2021.07.14.23.52.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Jul 2021 23:52:33 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of dri-devel-bounces@lists.freedesktop.org designates 2610:10:20:722:a800:ff:fe36:1795 as permitted sender) client-ip=2610:10:20:722:a800:ff:fe36:1795; Authentication-Results: mx.google.com; dkim=fail header.i=@kernel.org header.s=k20201202 header.b=uvyQDp0U; spf=pass (google.com: best guess record for domain of dri-devel-bounces@lists.freedesktop.org designates 2610:10:20:722:a800:ff:fe36:1795 as permitted sender) smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 28F196E532; Thu, 15 Jul 2021 06:52:32 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0B8816E532; Thu, 15 Jul 2021 06:52:31 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 70D6361370; Thu, 15 Jul 2021 06:52:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1626331950; bh=4Ca89CCWYSxsXSdy1/JtZxdhsT97ErB+7d0UpAenulY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uvyQDp0UFZ5WaTckYjLQ+3KXONBbGv7JNOJ1m0QirSTSg8QQPsk3CaBgoSgEungKj Zem3KMAaM0HqRkHvY2dATWeiEee5SDfD5Kaj8APFvdZgGfeQ+Wf8TVnuNtgBykJ8w0 LtfDXwT8M5NWSvL26evy+3Bxv8XL6PzQkIUocUFyjmq0PFW3LajI4FPJJqzJjTAi01 asfcsliQjUJkEmPk1lJJxVtQGhMRBFFZravUxC/+9HuOCm7+v1+AbpklntaOLUldjg iE+ICrfTkIhwHciRdohTyRERKQeUBFR9+U0V7yoLcul0ZjjR8oVCI2Ewkf4AoNSTu4 YzJP1ASF45chA== From: Vinod Koul To: Rob Clark Subject: [PATCH 01/11] drm/msm/dsi: add support for dsc data Date: Thu, 15 Jul 2021 12:21:53 +0530 Message-Id: <20210715065203.709914-2-vkoul@kernel.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210715065203.709914-1-vkoul@kernel.org> References: <20210715065203.709914-1-vkoul@kernel.org> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jonathan Marek , Jeffrey Hugo , David Airlie , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Abhinav Kumar , Bjorn Andersson , Vinod Koul , dri-devel@lists.freedesktop.org, Dmitry Baryshkov , freedreno@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Display Stream Compression (DSC) parameters need to be calculated. Add helpers and struct msm_display_dsc_config in msm_drv for this msm_display_dsc_config uses drm_dsc_config for DSC parameters. Signed-off-by: Vinod Koul --- Changes since RFC: - Drop the DT parsing code - Port dsc param calculation from downstream drivers/gpu/drm/msm/dsi/dsi_host.c | 133 +++++++++++++++++++++++++++++ drivers/gpu/drm/msm/msm_drv.h | 21 +++++ 2 files changed, 154 insertions(+) -- 2.31.1 diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index 8a10e4343281..e1e5d91809b5 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -30,6 +30,8 @@ #define DSI_RESET_TOGGLE_DELAY_MS 20 +static int dsi_populate_dsc_params(struct msm_display_dsc_config *dsc); + static int dsi_get_version(const void __iomem *base, u32 *major, u32 *minor) { u32 ver; @@ -156,6 +158,7 @@ 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 +1747,136 @@ 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 mux_words_size; + int groups_per_line, groups_total; + int min_rate_buffer_size; + int hrd_delay; + int pre_num_extra_mux_bits, num_extra_mux_bits; + int slice_bits; + int target_bpp_x16; + int data; + int final_value, final_scale; + int i; + + dsc->drm->rc_model_size = 8192; + dsc->drm->first_line_bpg_offset = 12; + 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; /* Not bpp 12 */ + if (dsc->drm->bits_per_pixel != 8) + dsc->drm->initial_offset = 2048; /* bpp = 12 */ + + mux_words_size = 48; /* bpc == 8/10 */ + if (dsc->drm->bits_per_component == 12) + mux_words_size = 64; + + 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 + 2 * (dsc->drm->bits_per_component - 8); + 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 + */ + dsc->slice_last_group_size = 3 - (dsc->drm->slice_width % 3); + groups_per_line = DIV_ROUND_UP(dsc->drm->slice_width, 3); + dsc->drm->slice_chunk_size = dsc->drm->slice_width * dsc->drm->bits_per_pixel / 8; + if ((dsc->drm->slice_width * dsc->drm->bits_per_pixel) % 8) + dsc->drm->slice_chunk_size++; + + /* rbs-min */ + min_rate_buffer_size = dsc->drm->rc_model_size - dsc->drm->initial_offset + + dsc->drm->initial_xmit_delay * dsc->drm->bits_per_pixel + + groups_per_line * dsc->drm->first_line_bpg_offset; + + hrd_delay = DIV_ROUND_UP(min_rate_buffer_size, dsc->drm->bits_per_pixel); + + dsc->drm->initial_dec_delay = hrd_delay - dsc->drm->initial_xmit_delay; + + dsc->drm->initial_scale_value = 8 * dsc->drm->rc_model_size / + (dsc->drm->rc_model_size - dsc->drm->initial_offset); + + slice_bits = 8 * dsc->drm->slice_chunk_size * dsc->drm->slice_height; + + groups_total = groups_per_line * dsc->drm->slice_height; + + data = dsc->drm->first_line_bpg_offset * 2048; + + dsc->drm->nfl_bpg_offset = DIV_ROUND_UP(data, (dsc->drm->slice_height - 1)); + + pre_num_extra_mux_bits = 3 * (mux_words_size + (4 * dsc->drm->bits_per_component + 4) - 2); + + num_extra_mux_bits = pre_num_extra_mux_bits - (mux_words_size - + ((slice_bits - pre_num_extra_mux_bits) % mux_words_size)); + + data = 2048 * (dsc->drm->rc_model_size - dsc->drm->initial_offset + num_extra_mux_bits); + dsc->drm->slice_bpg_offset = DIV_ROUND_UP(data, groups_total); + + /* bpp * 16 + 0.5 */ + data = dsc->drm->bits_per_pixel * 16; + data *= 2; + data++; + data /= 2; + target_bpp_x16 = data; + + data = (dsc->drm->initial_xmit_delay * target_bpp_x16) / 16; + final_value = dsc->drm->rc_model_size - data + num_extra_mux_bits; + dsc->drm->final_offset = final_value; + + final_scale = 8 * dsc->drm->rc_model_size / (dsc->drm->rc_model_size - final_value); + + + data = (final_scale - 9) * (dsc->drm->nfl_bpg_offset + dsc->drm->slice_bpg_offset); + dsc->drm->scale_increment_interval = (2048 * dsc->drm->final_offset) / data; + + dsc->drm->scale_decrement_interval = groups_per_line / (dsc->drm->initial_scale_value - 8); + + return 0; +} + static int dsi_host_parse_dt(struct msm_dsi_host *msm_host) { struct device *dev = &msm_host->pdev->dev; diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index 2668941df529..65bff0176b66 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 @@ -134,6 +135,23 @@ 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 det_thresh_flatness; + u32 extra_width; + u32 pps_delay_ms; +}; + struct msm_drm_private { struct drm_device *dev; @@ -227,6 +245,9 @@ 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;