From patchwork Tue Sep 21 15:52:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?SmFzb24tSkggTGluICjmnpfnnb/npaUp?= X-Patchwork-Id: 12508063 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 2C064C433F5 for ; Tue, 21 Sep 2021 15:52:46 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id F1D8F61183 for ; Tue, 21 Sep 2021 15:52:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org F1D8F61183 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3E8DC6EA4F; Tue, 21 Sep 2021 15:52:36 +0000 (UTC) Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by gabe.freedesktop.org (Postfix) with ESMTPS id 82AE46EA50 for ; Tue, 21 Sep 2021 15:52:34 +0000 (UTC) X-UUID: ce6c2195a9fd44988c7402055fdee566-20210921 X-UUID: ce6c2195a9fd44988c7402055fdee566-20210921 Received: from mtkcas10.mediatek.inc [(172.21.101.39)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1927974152; Tue, 21 Sep 2021 23:52:31 +0800 Received: from mtkexhb01.mediatek.inc (172.21.101.102) by mtkmbs06n2.mediatek.inc (172.21.101.130) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 21 Sep 2021 23:52:30 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkexhb01.mediatek.inc (172.21.101.102) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 21 Sep 2021 23:52:30 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 21 Sep 2021 23:52:29 +0800 From: jason-jh.lin To: Rob Herring , Matthias Brugger , Chun-Kuang Hu , "Philipp Zabel" CC: Enric Balletbo i Serra , Maxime Coquelin , David Airlie , Daniel Vetter , Alexandre Torgue , , , , , , Fabien Parent , Yongqiang Niu , , , , , , , , Subject: [PATCH v11 14/16] drm/mediatek: add DSC support for mediatek-drm Date: Tue, 21 Sep 2021 23:52:16 +0800 Message-ID: <20210921155218.10387-15-jason-jh.lin@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20210921155218.10387-1-jason-jh.lin@mediatek.com> References: <20210921155218.10387-1-jason-jh.lin@mediatek.com> MIME-Version: 1.0 X-MTK: N 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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" DSC is designed for real-time systems with real-time compression, transmission, decompression and display. The DSC standard is a specification of the algorithms used for compressing and decompressing image display streams, including the specification of the syntax and semantics of the compressed video bit stream. Signed-off-by: jason-jh.lin Reviewed-by: Chun-Kuang Hu --- rebase on series [1] [1] drm/mediatek: add support for mediatek SOC MT8192 - https://patchwork.kernel.org/project/linux-mediatek/list/?series=529489 --- drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 47 +++++++++++++++++++++ drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 1 + 2 files changed, 48 insertions(+) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c index 23c03e550658..ce6c90b9edef 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c @@ -40,6 +40,12 @@ #define DITHER_LSB_ERR_SHIFT_G(x) (((x) & 0x7) << 12) #define DITHER_ADD_LSHIFT_G(x) (((x) & 0x7) << 4) +#define DISP_REG_DSC_CON 0x0000 +#define DSC_EN BIT(0) +#define DSC_DUAL_INOUT BIT(2) +#define DSC_BYPASS BIT(4) +#define DSC_UFOE_SEL BIT(16) + #define DISP_REG_OD_EN 0x0000 #define DISP_REG_OD_CFG 0x0020 #define OD_RELAYMODE BIT(0) @@ -181,6 +187,36 @@ static void mtk_dither_set(struct device *dev, unsigned int bpc, DISP_DITHERING, cmdq_pkt); } +static void mtk_dsc_config(struct device *dev, unsigned int w, + unsigned int h, unsigned int vrefresh, + unsigned int bpc, struct cmdq_pkt *cmdq_pkt) +{ + struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); + + /* dsc bypass mode */ + mtk_ddp_write_mask(cmdq_pkt, DSC_BYPASS, &priv->cmdq_reg, priv->regs, + DISP_REG_DSC_CON, DSC_BYPASS); + mtk_ddp_write_mask(cmdq_pkt, DSC_UFOE_SEL, &priv->cmdq_reg, priv->regs, + DISP_REG_DSC_CON, DSC_UFOE_SEL); + mtk_ddp_write_mask(cmdq_pkt, DSC_DUAL_INOUT, &priv->cmdq_reg, priv->regs, + DISP_REG_DSC_CON, DSC_DUAL_INOUT); +} + +static void mtk_dsc_start(struct device *dev) +{ + struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); + + /* write with mask to reserve the value set in mtk_dsc_config */ + mtk_ddp_write_mask(NULL, DSC_EN, &priv->cmdq_reg, priv->regs, DISP_REG_DSC_CON, DSC_EN); +} + +static void mtk_dsc_stop(struct device *dev) +{ + struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev); + + writel_relaxed(0x0, priv->regs + DISP_REG_DSC_CON); +} + static void mtk_od_config(struct device *dev, unsigned int w, unsigned int h, unsigned int vrefresh, unsigned int bpc, struct cmdq_pkt *cmdq_pkt) @@ -270,6 +306,14 @@ static const struct mtk_ddp_comp_funcs ddp_dpi = { .stop = mtk_dpi_stop, }; +static const struct mtk_ddp_comp_funcs ddp_dsc = { + .clk_enable = mtk_ddp_clk_enable, + .clk_disable = mtk_ddp_clk_disable, + .config = mtk_dsc_config, + .start = mtk_dsc_start, + .stop = mtk_dsc_stop, +}; + static const struct mtk_ddp_comp_funcs ddp_dsi = { .start = mtk_dsi_ddp_start, .stop = mtk_dsi_ddp_stop, @@ -339,6 +383,7 @@ static const char * const mtk_ddp_comp_stem[MTK_DDP_COMP_TYPE_MAX] = { [MTK_DISP_CCORR] = "ccorr", [MTK_DISP_COLOR] = "color", [MTK_DISP_DITHER] = "dither", + [MTK_DISP_DSC] = "dsc", [MTK_DISP_GAMMA] = "gamma", [MTK_DISP_MUTEX] = "mutex", [MTK_DISP_OD] = "od", @@ -369,6 +414,8 @@ static const struct mtk_ddp_comp_match mtk_ddp_matches[DDP_COMPONENT_ID_MAX] = { [DDP_COMPONENT_DITHER] = { MTK_DISP_DITHER, 0, &ddp_dither }, [DDP_COMPONENT_DPI0] = { MTK_DPI, 0, &ddp_dpi }, [DDP_COMPONENT_DPI1] = { MTK_DPI, 1, &ddp_dpi }, + [DDP_COMPONENT_DSC0] = { MTK_DISP_DSC, 0, &ddp_dsc }, + [DDP_COMPONENT_DSC1] = { MTK_DISP_DSC, 1, &ddp_dsc }, [DDP_COMPONENT_DSI0] = { MTK_DSI, 0, &ddp_dsi }, [DDP_COMPONENT_DSI1] = { MTK_DSI, 1, &ddp_dsi }, [DDP_COMPONENT_DSI2] = { MTK_DSI, 2, &ddp_dsi }, diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h index 4c6a98662305..5e6ff12f16ad 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h @@ -23,6 +23,7 @@ enum mtk_ddp_comp_type { MTK_DISP_CCORR, MTK_DISP_COLOR, MTK_DISP_DITHER, + MTK_DISP_DSC, MTK_DISP_GAMMA, MTK_DISP_MUTEX, MTK_DISP_OD,