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Wed, 4 Nov 2020 18:32:26 +0100 (CET) Received: from localhost (10.75.127.47) by SFHDAG1NODE1.st.com (10.75.127.1) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 4 Nov 2020 18:32:25 +0100 From: Hugues Fruchet To: Alexandre Torgue , Mauro Carvalho Chehab , Hans Verkuil , Sakari Ailus , Rob Herring Subject: [PATCH v5 1/4] media: stm32-dcmi: add support of BT656 bus Date: Wed, 4 Nov 2020 18:32:09 +0100 Message-ID: <1604511132-4014-2-git-send-email-hugues.fruchet@st.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1604511132-4014-1-git-send-email-hugues.fruchet@st.com> References: <1604511132-4014-1-git-send-email-hugues.fruchet@st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.47] X-ClientProxiedBy: SFHDAG7NODE1.st.com (10.75.127.19) To SFHDAG1NODE1.st.com (10.75.127.1) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312, 18.0.737 definitions=2020-11-04_12:2020-11-04, 2020-11-04 signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201104_123334_020104_93F5EEC6 X-CRM114-Status: GOOD ( 23.44 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Philippe CORNU , Yannick Fertre , Alain Volmat , Hugues Fruchet , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add support of BT656 embedded synchronization bus. This mode allows to save hardware synchro lines hsync & vsync by replacing them with synchro codes embedded in data stream. This bus type is only compatible with 8 bits width data bus. Due to reserved values 0x00 & 0xff used for synchro codes, valid data vary from 0x1 to 0xfe, this is up to sensor to clip accordingly pixel data. As a consequence of this clipping, JPEG is not supported with this bus type. DCMI crop feature is also not available with this bus type. Signed-off-by: Hugues Fruchet --- drivers/media/platform/stm32/stm32-dcmi.c | 37 +++++++++++++++++++++++++++++-- 1 file changed, 35 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/stm32/stm32-dcmi.c b/drivers/media/platform/stm32/stm32-dcmi.c index fd1c41c..7705683 100644 --- a/drivers/media/platform/stm32/stm32-dcmi.c +++ b/drivers/media/platform/stm32/stm32-dcmi.c @@ -157,6 +157,7 @@ struct stm32_dcmi { struct vb2_queue queue; struct v4l2_fwnode_bus_parallel bus; + enum v4l2_mbus_type bus_type; struct completion complete; struct clk *mclk; enum state state; @@ -777,6 +778,23 @@ static int dcmi_start_streaming(struct vb2_queue *vq, unsigned int count) if (dcmi->bus.flags & V4L2_MBUS_PCLK_SAMPLE_RISING) val |= CR_PCKPOL; + /* + * BT656 embedded synchronisation bus mode. + * + * Default SAV/EAV mode is supported here with default codes + * SAV=0xff000080 & EAV=0xff00009d. + * With DCMI this means LSC=SAV=0x80 & LEC=EAV=0x9d. + */ + if (dcmi->bus_type == V4L2_MBUS_BT656) { + val |= CR_ESS; + + /* Unmask all codes */ + reg_write(dcmi->regs, DCMI_ESUR, 0xffffffff);/* FEC:LEC:LSC:FSC */ + + /* Trig on LSC=0x80 & LEC=0x9d codes, ignore FSC and FEC */ + reg_write(dcmi->regs, DCMI_ESCR, 0xff9d80ff);/* FEC:LEC:LSC:FSC */ + } + reg_write(dcmi->regs, DCMI_CR, val); /* Set crop */ @@ -1067,8 +1085,9 @@ static int dcmi_set_fmt(struct stm32_dcmi *dcmi, struct v4l2_format *f) if (ret) return ret; - /* Disable crop if JPEG is requested */ - if (pix->pixelformat == V4L2_PIX_FMT_JPEG) + /* Disable crop if JPEG is requested or BT656 bus is selected */ + if (pix->pixelformat == V4L2_PIX_FMT_JPEG && + dcmi->bus_type != V4L2_MBUS_BT656) dcmi->do_crop = false; /* pix to mbus format */ @@ -1592,6 +1611,11 @@ static int dcmi_formats_init(struct stm32_dcmi *dcmi) if (dcmi_formats[i].mbus_code != mbus_code.code) continue; + /* Exclude JPEG if BT656 bus is selected */ + if (dcmi_formats[i].fourcc == V4L2_PIX_FMT_JPEG && + dcmi->bus_type == V4L2_MBUS_BT656) + continue; + /* Code supported, have we got this fourcc yet? */ for (j = 0; j < num_fmts; j++) if (sd_fmts[j]->fourcc == @@ -1873,9 +1897,18 @@ static int dcmi_probe(struct platform_device *pdev) dev_err(&pdev->dev, "CSI bus not supported\n"); return -ENODEV; } + + if (ep.bus_type == V4L2_MBUS_BT656 && + ep.bus.parallel.bus_width != 8) { + dev_err(&pdev->dev, "BT656 bus conflicts with %u bits bus width (8 bits required)\n", + ep.bus.parallel.bus_width); + return -ENODEV; + } + dcmi->bus.flags = ep.bus.parallel.flags; dcmi->bus.bus_width = ep.bus.parallel.bus_width; dcmi->bus.data_shift = ep.bus.parallel.data_shift; + dcmi->bus_type = ep.bus_type; irq = platform_get_irq(pdev, 0); if (irq <= 0) From patchwork Wed Nov 4 17:32:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hugues FRUCHET X-Patchwork-Id: 11881749 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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 66793C2D0A3 for ; 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Wed, 4 Nov 2020 18:32:27 +0100 (CET) Received: from localhost (10.75.127.44) by SFHDAG1NODE1.st.com (10.75.127.1) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 4 Nov 2020 18:32:26 +0100 From: Hugues Fruchet To: Alexandre Torgue , Mauro Carvalho Chehab , Hans Verkuil , Sakari Ailus , Rob Herring Subject: [PATCH v5 2/4] media: dt-bindings: media: st, stm32-dcmi: add support of BT656 bus Date: Wed, 4 Nov 2020 18:32:10 +0100 Message-ID: <1604511132-4014-3-git-send-email-hugues.fruchet@st.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1604511132-4014-1-git-send-email-hugues.fruchet@st.com> References: <1604511132-4014-1-git-send-email-hugues.fruchet@st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.44] X-ClientProxiedBy: SFHDAG1NODE1.st.com (10.75.127.1) To SFHDAG1NODE1.st.com (10.75.127.1) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312, 18.0.737 definitions=2020-11-04_11:2020-11-04, 2020-11-04 signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201104_123238_475167_2CC0C7B1 X-CRM114-Status: GOOD ( 16.55 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Philippe CORNU , Yannick Fertre , Alain Volmat , Hugues Fruchet , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add support of BT656 embedded synchronization bus mode in DCMI driver. Add "bus-type" property and make it required so that there is no ambiguity between parallel mode (bus-type=5) and BT656 mode (bus-type=6). BT656 mode allows to save hardware synchro lines hsync & vsync by replacing them with synchro codes embedded in data stream, hence hsync-active & vsync-active properties are useless in this mode. With DCMI, BT656 bus mode is only compatible with 8 bits width data bus. Signed-off-by: Hugues Fruchet Reviewed-by: Rob Herring --- .../devicetree/bindings/media/st,stm32-dcmi.yaml | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml b/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml index 3fe778c..c18574b 100644 --- a/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml +++ b/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml @@ -44,6 +44,43 @@ properties: bindings defined in Documentation/devicetree/bindings/media/video-interfaces.txt. + properties: + endpoint: + type: object + + properties: + bus-type: + enum: [5, 6] + default: 5 + + bus-width: + enum: [8, 10, 12, 14] + default: 8 + + remote-endpoint: true + + allOf: + - if: + properties: + bus-type: + const: 6 + + then: + properties: + hsync-active: false + vsync-active: false + bus-width: + enum: [8] + + required: + - remote-endpoint + - bus-type + - pclk-sample + + unevaluatedProperties: false + + additionalProperties: false + required: - compatible - reg @@ -75,6 +112,7 @@ examples: port { dcmi_0: endpoint { remote-endpoint = <&ov5640_0>; + bus-type = <5>; bus-width = <8>; hsync-active = <0>; vsync-active = <0>; From patchwork Wed Nov 4 17:32:11 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hugues FRUCHET X-Patchwork-Id: 11881755 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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,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 81ED9C2D0A3 for ; Wed, 4 Nov 2020 17:34:23 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 10FBC20759 for ; 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Wed, 4 Nov 2020 18:32:28 +0100 (CET) Received: from localhost (10.75.127.47) by SFHDAG1NODE1.st.com (10.75.127.1) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 4 Nov 2020 18:32:28 +0100 From: Hugues Fruchet To: Alexandre Torgue , Mauro Carvalho Chehab , Hans Verkuil , Sakari Ailus , Rob Herring Subject: [PATCH v5 3/4] ARM: dts: stm32: set bus-type in DCMI endpoint for stm32mp157c-ev1 board Date: Wed, 4 Nov 2020 18:32:11 +0100 Message-ID: <1604511132-4014-4-git-send-email-hugues.fruchet@st.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1604511132-4014-1-git-send-email-hugues.fruchet@st.com> References: <1604511132-4014-1-git-send-email-hugues.fruchet@st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.47] X-ClientProxiedBy: SFHDAG6NODE2.st.com (10.75.127.17) To SFHDAG1NODE1.st.com (10.75.127.1) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312, 18.0.737 definitions=2020-11-04_12:2020-11-04, 2020-11-04 signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201104_123348_188828_524C539A X-CRM114-Status: GOOD ( 16.54 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Philippe CORNU , Yannick Fertre , Alain Volmat , Hugues Fruchet , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Explicitly set bus-type to parallel mode in DCMI endpoint (bus-type=5). Signed-off-by: Hugues Fruchet --- arch/arm/boot/dts/stm32mp157c-ev1.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/stm32mp157c-ev1.dts b/arch/arm/boot/dts/stm32mp157c-ev1.dts index 85628e1..6cc5d2a 100644 --- a/arch/arm/boot/dts/stm32mp157c-ev1.dts +++ b/arch/arm/boot/dts/stm32mp157c-ev1.dts @@ -90,6 +90,7 @@ port { dcmi_0: endpoint { remote-endpoint = <&ov5640_0>; + bus-type = <5>; bus-width = <8>; hsync-active = <0>; vsync-active = <0>; From patchwork Wed Nov 4 17:32:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hugues FRUCHET X-Patchwork-Id: 11881751 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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,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 68D6DC4741F for ; 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Wed, 4 Nov 2020 18:32:29 +0100 (CET) Received: from localhost (10.75.127.47) by SFHDAG1NODE1.st.com (10.75.127.1) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 4 Nov 2020 18:32:29 +0100 From: Hugues Fruchet To: Alexandre Torgue , Mauro Carvalho Chehab , Hans Verkuil , Sakari Ailus , Rob Herring Subject: [PATCH v5 4/4] ARM: dts: stm32: set bus-type in DCMI endpoint for stm32429i-eval board Date: Wed, 4 Nov 2020 18:32:12 +0100 Message-ID: <1604511132-4014-5-git-send-email-hugues.fruchet@st.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1604511132-4014-1-git-send-email-hugues.fruchet@st.com> References: <1604511132-4014-1-git-send-email-hugues.fruchet@st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.47] X-ClientProxiedBy: SFHDAG6NODE2.st.com (10.75.127.17) To SFHDAG1NODE1.st.com (10.75.127.1) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312, 18.0.737 definitions=2020-11-04_12:2020-11-04, 2020-11-04 signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201104_123239_330112_DAB48D9F X-CRM114-Status: GOOD ( 16.48 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Philippe CORNU , Yannick Fertre , Alain Volmat , Hugues Fruchet , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Explicitly set bus-type to parallel mode in DCMI endpoint (bus-type=5). Signed-off-by: Hugues Fruchet --- arch/arm/boot/dts/stm32429i-eval.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/stm32429i-eval.dts b/arch/arm/boot/dts/stm32429i-eval.dts index 67e7648..7e10ae7 100644 --- a/arch/arm/boot/dts/stm32429i-eval.dts +++ b/arch/arm/boot/dts/stm32429i-eval.dts @@ -188,6 +188,7 @@ port { dcmi_0: endpoint { remote-endpoint = <&ov2640_0>; + bus-type = <5>; bus-width = <8>; hsync-active = <0>; vsync-active = <0>;