From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3A2D3CCA479 for ; Mon, 20 Jun 2022 03:55:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238147AbiFTDzC (ORCPT ); Sun, 19 Jun 2022 23:55:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42788 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231237AbiFTDy7 (ORCPT ); Sun, 19 Jun 2022 23:54:59 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 765A2BE2F; Sun, 19 Jun 2022 20:54:58 -0700 (PDT) X-UUID: 6946a5eecbb54812a6c7683a63617b7a-20220620 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.6,REQID:11aa612c-3cfc-42ef-a077-14d8862115a3,OB:0,LO B:0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:45,FILE:0,RULE:Release_Ham,ACT ION:release,TS:45 X-CID-INFO: VERSION:1.1.6,REQID:11aa612c-3cfc-42ef-a077-14d8862115a3,OB:0,LOB: 0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:45,FILE:0,RULE:Release_Ham,ACTIO N:release,TS:45 X-CID-META: VersionHash:b14ad71,CLOUDID:c4fb253d-9948-4b2a-a784-d8a6c1086106,C OID:b7bcf173cd10,Recheck:0,SF:28|17|19|48,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,QS:nil,BEC:nil,COL:0 X-UUID: 6946a5eecbb54812a6c7683a63617b7a-20220620 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 953839718; Mon, 20 Jun 2022 11:54:53 +0800 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Mon, 20 Jun 2022 11:54:52 +0800 Received: from mtksdccf07 (172.21.84.99) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.3 via Frontend Transport; Mon, 20 Jun 2022 11:54:52 +0800 Message-ID: <597d190f72427d5d1da7a4ca46b219e2edb69693.camel@mediatek.com> Subject: Re: [PATCH v11 05/10] drm/mediatek: Add MT8195 Embedded DisplayPort driver From: CK Hu To: Bo-Chen Chen , , , , , , , , , , CC: , , , , , , , , , , , Date: Mon, 20 Jun 2022 11:54:52 +0800 In-Reply-To: <20220610105522.13449-6-rex-bc.chen@mediatek.com> References: <20220610105522.13449-1-rex-bc.chen@mediatek.com> <20220610105522.13449-6-rex-bc.chen@mediatek.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.28.5-0ubuntu0.18.04.2 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Rex: On Fri, 2022-06-10 at 18:55 +0800, Bo-Chen Chen wrote: > From: Markus Schneider-Pargmann > > This patch adds a embedded displayport driver for the MediaTek mt8195 > SoC. > > It supports the MT8195, the embedded DisplayPort units. It offers > DisplayPort 1.4 with up to 4 lanes. > > The driver creates a child device for the phy. The child device will > never exist without the parent being active. As they are sharing a > register range, the parent passes a regmap pointer to the child so > that > both can work with the same register range. The phy driver sets > device > data that is read by the parent to get the phy device that can be > used > to control the phy properties. > > This driver is based on an initial version by > Jitao shi > > Signed-off-by: Markus Schneider-Pargmann > Signed-off-by: Guillaume Ranquet > [Bo-Chen: Cleanup the drivers and modify comments from reviewers] > Signed-off-by: Bo-Chen Chen > --- [snip] > + > +static int mtk_dp_bridge_atomic_check(struct drm_bridge *bridge, > + struct drm_bridge_state > *bridge_state, > + struct drm_crtc_state > *crtc_state, > + struct drm_connector_state > *conn_state) > +{ > + struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge); > + struct drm_crtc *crtc = conn_state->crtc; > + unsigned int input_bus_format; > + > + input_bus_format = bridge_state->input_bus_cfg.format; > + > + dev_dbg(mtk_dp->dev, "input format 0x%04x, output format > 0x%04x\n", > + bridge_state->input_bus_cfg.format, > + bridge_state->output_bus_cfg.format); > + > + mtk_dp->input_fmt = input_bus_format; > + if (mtk_dp->input_fmt == MEDIA_BUS_FMT_YUYV8_1X16) input_fmt is used only in this function, so let it be local variable. Regards, CK > + mtk_dp->info.format = DP_PIXELFORMAT_YUV422; > + else > + mtk_dp->info.format = DP_PIXELFORMAT_RGB; > + > + if (!crtc) { > + drm_err(mtk_dp->drm_dev, > + "Can't enable bridge as connector state doesn't > have a crtc\n"); > + return -EINVAL; > + } > + > + mtk_dp_parse_drm_mode_timings(mtk_dp, &crtc_state- > >adjusted_mode); > + if (mtk_dp_parse_capabilities(mtk_dp)) { > + drm_err(mtk_dp->drm_dev, > + "Can't enable bridge as nothing is plugged > in\n"); > + return -EINVAL; > + } > + > + return 0; > +} From mboxrd@z Thu Jan 1 00:00:00 1970 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 DCF27C433EF for ; Mon, 20 Jun 2022 03:55:00 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E568C10E131; Mon, 20 Jun 2022 03:54:59 +0000 (UTC) Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by gabe.freedesktop.org (Postfix) with ESMTPS id C6E1410E131 for ; Mon, 20 Jun 2022 03:54:58 +0000 (UTC) X-UUID: 6946a5eecbb54812a6c7683a63617b7a-20220620 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.6, REQID:11aa612c-3cfc-42ef-a077-14d8862115a3, OB:0, LO B:0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:45,FILE:0,RULE:Release_Ham,ACT ION:release,TS:45 X-CID-INFO: VERSION:1.1.6, REQID:11aa612c-3cfc-42ef-a077-14d8862115a3, OB:0, LOB: 0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:45,FILE:0,RULE:Release_Ham,ACTIO N:release,TS:45 X-CID-META: VersionHash:b14ad71, CLOUDID:c4fb253d-9948-4b2a-a784-d8a6c1086106, C OID:b7bcf173cd10,Recheck:0,SF:28|17|19|48,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,QS:nil,BEC:nil,COL:0 X-UUID: 6946a5eecbb54812a6c7683a63617b7a-20220620 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 953839718; Mon, 20 Jun 2022 11:54:53 +0800 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Mon, 20 Jun 2022 11:54:52 +0800 Received: from mtksdccf07 (172.21.84.99) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.3 via Frontend Transport; Mon, 20 Jun 2022 11:54:52 +0800 Message-ID: <597d190f72427d5d1da7a4ca46b219e2edb69693.camel@mediatek.com> Subject: Re: [PATCH v11 05/10] drm/mediatek: Add MT8195 Embedded DisplayPort driver From: CK Hu To: Bo-Chen Chen , , , , , , , , , , Date: Mon, 20 Jun 2022 11:54:52 +0800 In-Reply-To: <20220610105522.13449-6-rex-bc.chen@mediatek.com> References: <20220610105522.13449-1-rex-bc.chen@mediatek.com> <20220610105522.13449-6-rex-bc.chen@mediatek.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.28.5-0ubuntu0.18.04.2 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit 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, linux-fbdev@vger.kernel.org, granquet@baylibre.com, jitao.shi@mediatek.com, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, msp@baylibre.com, Project_Global_Chrome_Upstream_Group@mediatek.com, linux-mediatek@lists.infradead.org, wenst@chromium.org, linux-arm-kernel@lists.infradead.org, angelogioacchino.delregno@collabora.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Hi, Rex: On Fri, 2022-06-10 at 18:55 +0800, Bo-Chen Chen wrote: > From: Markus Schneider-Pargmann > > This patch adds a embedded displayport driver for the MediaTek mt8195 > SoC. > > It supports the MT8195, the embedded DisplayPort units. It offers > DisplayPort 1.4 with up to 4 lanes. > > The driver creates a child device for the phy. The child device will > never exist without the parent being active. As they are sharing a > register range, the parent passes a regmap pointer to the child so > that > both can work with the same register range. The phy driver sets > device > data that is read by the parent to get the phy device that can be > used > to control the phy properties. > > This driver is based on an initial version by > Jitao shi > > Signed-off-by: Markus Schneider-Pargmann > Signed-off-by: Guillaume Ranquet > [Bo-Chen: Cleanup the drivers and modify comments from reviewers] > Signed-off-by: Bo-Chen Chen > --- [snip] > + > +static int mtk_dp_bridge_atomic_check(struct drm_bridge *bridge, > + struct drm_bridge_state > *bridge_state, > + struct drm_crtc_state > *crtc_state, > + struct drm_connector_state > *conn_state) > +{ > + struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge); > + struct drm_crtc *crtc = conn_state->crtc; > + unsigned int input_bus_format; > + > + input_bus_format = bridge_state->input_bus_cfg.format; > + > + dev_dbg(mtk_dp->dev, "input format 0x%04x, output format > 0x%04x\n", > + bridge_state->input_bus_cfg.format, > + bridge_state->output_bus_cfg.format); > + > + mtk_dp->input_fmt = input_bus_format; > + if (mtk_dp->input_fmt == MEDIA_BUS_FMT_YUYV8_1X16) input_fmt is used only in this function, so let it be local variable. Regards, CK > + mtk_dp->info.format = DP_PIXELFORMAT_YUV422; > + else > + mtk_dp->info.format = DP_PIXELFORMAT_RGB; > + > + if (!crtc) { > + drm_err(mtk_dp->drm_dev, > + "Can't enable bridge as connector state doesn't > have a crtc\n"); > + return -EINVAL; > + } > + > + mtk_dp_parse_drm_mode_timings(mtk_dp, &crtc_state- > >adjusted_mode); > + if (mtk_dp_parse_capabilities(mtk_dp)) { > + drm_err(mtk_dp->drm_dev, > + "Can't enable bridge as nothing is plugged > in\n"); > + return -EINVAL; > + } > + > + return 0; > +} From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 6E84BC43334 for ; Mon, 20 Jun 2022 04:06:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Date:CC:To:From:Subject:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=XxA6ZNivQ6F8qCWygqyFZpXqLnR9dJwRNQPFY/oq2dI=; b=3bvCPR3agGPx6x WanyCPIUm+SUXuis7PIkg/A4k9ID7KXVcn2XOvl/dPjQOKdIOb7Vkt6c7TDzqVdhjpby1ytdccgLW ORYiaNNxH+NbjPRHr5VeycYjHJHDv/cmIIPKNqzYPCsaXqBNEP3jZG9c7ipewO9BkJ39b80+SKRAd p45lfJ3gqWsYcjQSocAx803A5mxKmlrgS8t1APdQpRJ0cZfudaVF9KeOslbr7Aq4yTtQP5JR1uHtc xSOEBSkHTdyFm3a7x27vlbnTcPIFgfUmbgiLk79ouzO0FXgkrKHB62Ubk+JaVR/XYJP3VICElOFTJ WRhq5Ixeyo9qERHQtwkw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o38es-00G7dm-6t; Mon, 20 Jun 2022 04:05:02 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1o38ep-00G7cz-8B; Mon, 20 Jun 2022 04:05:00 +0000 X-UUID: 49e88d03f56c480fa41839ec511a832d-20220619 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.6,REQID:f5c92779-27b6-4593-9ba2-003fb4991bae,OB:0,LO B:0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACTI ON:release,TS:0 X-CID-META: VersionHash:b14ad71,CLOUDID:d6c67e2d-1756-4fa3-be7f-474a6e4be921,C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:0,File:nil ,QS:nil,BEC:nil,COL:0 X-UUID: 49e88d03f56c480fa41839ec511a832d-20220619 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1075307086; Sun, 19 Jun 2022 21:04:56 -0700 Received: from mtkmbs10n1.mediatek.inc (172.21.101.34) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sun, 19 Jun 2022 20:54:53 -0700 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Mon, 20 Jun 2022 11:54:52 +0800 Received: from mtksdccf07 (172.21.84.99) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.3 via Frontend Transport; Mon, 20 Jun 2022 11:54:52 +0800 Message-ID: <597d190f72427d5d1da7a4ca46b219e2edb69693.camel@mediatek.com> Subject: Re: [PATCH v11 05/10] drm/mediatek: Add MT8195 Embedded DisplayPort driver From: CK Hu To: Bo-Chen Chen , , , , , , , , , , CC: , , , , , , , , , , , Date: Mon, 20 Jun 2022 11:54:52 +0800 In-Reply-To: <20220610105522.13449-6-rex-bc.chen@mediatek.com> References: <20220610105522.13449-1-rex-bc.chen@mediatek.com> <20220610105522.13449-6-rex-bc.chen@mediatek.com> X-Mailer: Evolution 3.28.5-0ubuntu0.18.04.2 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220619_210459_300659_1A387783 X-CRM114-Status: GOOD ( 23.16 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, Rex: On Fri, 2022-06-10 at 18:55 +0800, Bo-Chen Chen wrote: > From: Markus Schneider-Pargmann > > This patch adds a embedded displayport driver for the MediaTek mt8195 > SoC. > > It supports the MT8195, the embedded DisplayPort units. It offers > DisplayPort 1.4 with up to 4 lanes. > > The driver creates a child device for the phy. The child device will > never exist without the parent being active. As they are sharing a > register range, the parent passes a regmap pointer to the child so > that > both can work with the same register range. The phy driver sets > device > data that is read by the parent to get the phy device that can be > used > to control the phy properties. > > This driver is based on an initial version by > Jitao shi > > Signed-off-by: Markus Schneider-Pargmann > Signed-off-by: Guillaume Ranquet > [Bo-Chen: Cleanup the drivers and modify comments from reviewers] > Signed-off-by: Bo-Chen Chen > --- [snip] > + > +static int mtk_dp_bridge_atomic_check(struct drm_bridge *bridge, > + struct drm_bridge_state > *bridge_state, > + struct drm_crtc_state > *crtc_state, > + struct drm_connector_state > *conn_state) > +{ > + struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge); > + struct drm_crtc *crtc = conn_state->crtc; > + unsigned int input_bus_format; > + > + input_bus_format = bridge_state->input_bus_cfg.format; > + > + dev_dbg(mtk_dp->dev, "input format 0x%04x, output format > 0x%04x\n", > + bridge_state->input_bus_cfg.format, > + bridge_state->output_bus_cfg.format); > + > + mtk_dp->input_fmt = input_bus_format; > + if (mtk_dp->input_fmt == MEDIA_BUS_FMT_YUYV8_1X16) input_fmt is used only in this function, so let it be local variable. Regards, CK > + mtk_dp->info.format = DP_PIXELFORMAT_YUV422; > + else > + mtk_dp->info.format = DP_PIXELFORMAT_RGB; > + > + if (!crtc) { > + drm_err(mtk_dp->drm_dev, > + "Can't enable bridge as connector state doesn't > have a crtc\n"); > + return -EINVAL; > + } > + > + mtk_dp_parse_drm_mode_timings(mtk_dp, &crtc_state- > >adjusted_mode); > + if (mtk_dp_parse_capabilities(mtk_dp)) { > + drm_err(mtk_dp->drm_dev, > + "Can't enable bridge as nothing is plugged > in\n"); > + return -EINVAL; > + } > + > + return 0; > +} _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel