From patchwork Tue Apr 19 09:41:38 2022 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: 12817669 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 34CF4C433FE for ; Tue, 19 Apr 2022 09:42:04 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 49FA110EE95; Tue, 19 Apr 2022 09:41:55 +0000 (UTC) Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by gabe.freedesktop.org (Postfix) with ESMTPS id 89C7A10EEE2 for ; Tue, 19 Apr 2022 09:41:53 +0000 (UTC) X-UUID: 413f2b55b2104391941cc246023a331c-20220419 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.4, REQID:a46e3758-0d2b-444b-963a-1bcac1413200, OB:40, L OB:20,IP:0,URL:8,TC:0,Content:-20,EDM:0,RT:0,SF:100,FILE:0,RULE:Release_Ha m,ACTION:release,TS:88 X-CID-INFO: VERSION:1.1.4, REQID:a46e3758-0d2b-444b-963a-1bcac1413200, OB:40, LOB :20,IP:0,URL:8,TC:0,Content:-20,EDM:0,RT:0,SF:100,FILE:0,RULE:Spam_GS981B3 D,ACTION:quarantine,TS:88 X-CID-META: VersionHash:faefae9, CLOUDID:726f5eef-06b0-4305-bfbf-554bfc9d151a, C OID:87016cecdd16,Recheck:0,SF:13|15|28|17|19|48,TC:nil,Content:0,EDM:-3,Fi le:nil,QS:0,BEC:nil X-UUID: 413f2b55b2104391941cc246023a331c-20220419 Received: from mtkcas10.mediatek.inc [(172.21.101.39)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1503789339; Tue, 19 Apr 2022 17:41:48 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Tue, 19 Apr 2022 17:41:45 +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, 19 Apr 2022 17:41:45 +0800 From: jason-jh.lin To: Matthias Brugger , Chun-Kuang Hu , AngeloGioacchino Del Regno Subject: [PATCH v20 3/8] drm/mediatek: add DSC support for mediatek-drm Date: Tue, 19 Apr 2022 17:41:38 +0800 Message-ID: <20220419094143.9561-4-jason-jh.lin@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220419094143.9561-1-jason-jh.lin@mediatek.com> References: <20220419094143.9561-1-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: , Cc: devicetree@vger.kernel.org, Jason-JH Lin , Singo Chang , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Project_Global_Chrome_Upstream_Group@mediatek.com, Nancy Lin , linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org 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 Acked-by: AngeloGioacchino Del Regno --- 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 2e99aee13dfe..68a00b336897 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 ad267bb8fc9b..763725fe72b3 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,