From patchwork Tue Apr 28 18:07:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Foss X-Patchwork-Id: 11515337 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F187D92C for ; Tue, 28 Apr 2020 18:07:30 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id D1323208E0 for ; Tue, 28 Apr 2020 18:07:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="nTJbfTW7"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="TLmz9BS/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D1323208E0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=8tjBusGshDl1kNHkuiQE0sSikc7bEK1nWQJaWo2Ie/E=; b=nTJbfTW7UC9Z+U j6uF3pYjiiiY4JrQ8t6j3xZQJdIuLnvsaInMf3CHv7zGaCQtM34M/bj6OEpjufIvODCXv99SXbbnU egdDBsx4xudjEASLVIlo2HW6H/nmWBFfSUC0pBrfv17se7YClealby57U2/v7Apzzh11BGqANOvO0 XNxUcI7r59q7xB73WODQ1VJK47vlJBZRfIVXXr9VFJFoSBbTd7b16myBCTHRCTJGQZwabapk472oq YrT4/J/X0Ge5jepMEup6uCw/49+6WAxkskeVKDrbY87BQVJNZ41IV8+zbL2HYzSlTdI3GZrgV7gFB cTwipTYZfwURKqhhL0dQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jTUdj-0002Br-0q; Tue, 28 Apr 2020 18:07:27 +0000 Received: from mail-wr1-x444.google.com ([2a00:1450:4864:20::444]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jTUdf-0002A8-6w for linux-arm-kernel@lists.infradead.org; Tue, 28 Apr 2020 18:07:24 +0000 Received: by mail-wr1-x444.google.com with SMTP id s10so25807419wrr.0 for ; Tue, 28 Apr 2020 11:07:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=VPA3w2FdcezMr0VjYZPl3nlwaovVy4TaRn2qmUqyAi4=; b=TLmz9BS/d2TYOsdIdUAD5o/Fp3XUwakv6RIGZZUA/4tYljrFh9j7d0DW/ISgTFgG/Z 1Ask2XFRkfmE2kunQsPwOEeyY2Yyy4y9HQch6RvVhQW2EWSrluFucZfkbRPFmxV84dJw beIaRHbmse3RIiV7+JQl41EdEC/SzOgXPM5rWr4AdNijexqE//CX2nM+fP3OA1OP4RU0 4t8bpOFRD8TDtI4sIZHdchuA7+yYtWGk2cbJZt9Opc6nQNGsTiPLB6dHNcECM/fIVirv jKA5yOjYxhCghMVIe7bxTHBaCT/dYBWz66+w7DAtyv2Qwvki5ydKbS0lrLOWL8rhk/9X 8Kbg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=VPA3w2FdcezMr0VjYZPl3nlwaovVy4TaRn2qmUqyAi4=; b=UVeeDn0fxGWLVxZvB+7+aMssKQnyPLKF4z9ixziKxFNVpmZEIV9c4dtnnxmMUYNuto 27hs7FTFla/OdGig2nxT4x3jR2sJ/eF2W3EIt6c5fQpyxDpz8hOGO+xo8XzY9N4rAknW BV+yMolnj8Ptu91ftNFaQI7sbmc51jy6bULDKPVjjQ5WLe68wSsU8aE+TKmW3FS3EPiB Oo4JjVXYOlkCrBsdIs0dI9qVc3ke9TR5cEHlYh0/zHleCeJsWbIowgKT/NmdXxJUEn1m sSyuchGV7QeJj8ZlpjSJHpFIog1g9zNOSRnG23zGIehnyGIJCsUm5FreV9QU4BevRU5V 4weg== X-Gm-Message-State: AGi0PuZ7ZkyIcbbkg/gooYYw0d/SURKNFJnKzJ8p3+2A+UsMuI1fPFN6 +RFNKk+xSFhp6jjqwo26vB3J/A== X-Google-Smtp-Source: APiQypINfxdob9FO2QvTVw7sPiDBDVf4K2zUjDUnciTcfESlBOyJPryvyeFbi74J9/PMNz7LW2fubQ== X-Received: by 2002:a5d:6689:: with SMTP id l9mr33641451wru.261.1588097241896; Tue, 28 Apr 2020 11:07:21 -0700 (PDT) Received: from xps7590.local ([37.120.81.28]) by smtp.gmail.com with ESMTPSA id m14sm26202789wrs.76.2020.04.28.11.07.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Apr 2020 11:07:21 -0700 (PDT) From: Robert Foss To: Andy Shevchenko , Sakari Ailus , Marco Felsch , Maxime Ripard , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v8 v5 1/3] media: dt-bindings: ov8856: Document YAML bindings Date: Tue, 28 Apr 2020 20:07:16 +0200 Message-Id: <20200428180718.1609826-1-robert.foss@linaro.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200428_110723_267757_8F339E13 X-CRM114-Status: GOOD ( 14.35 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:444 listed in] [list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 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: Fabio Estevam , Dongchun Zhu , Robert Foss , Tomasz Figa Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Dongchun Zhu This patch adds documentation of device tree in YAML schema for the OV8856 CMOS image sensor. Signed-off-by: Dongchun Zhu Signed-off-by: Robert Foss Reviewed-by: Maxime Ripard --- - Changes since v7: * Marco: Make 'port' property optional * Maxime & Sakari: Add 'link-frequencies' property to dt binding * robher: Improve description for 'port' property - Changes since v6: * Marco: remove qcom specifics from DT example - Changes since v5: * Add assigned-clocks and assigned-clock-rates * robher: dt-schema errors - Changes since v4: * Fabio: Change reset-gpio to GPIO_ACTIVE_LOW, explain in description * Add clock-lanes property to example * robher: Fix syntax error in devicetree example - Changes since v3: * robher: Fix syntax error * robher: Removed maxItems * Fixes yaml 'make dt-binding-check' errors - Changes since v2: Fixes comments from from Andy, Tomasz, Sakari, Rob. * Convert text documentation to YAML schema. - Changes since v1: Fixes comments from Sakari, Tomasz * Add clock-frequency and link-frequencies in DT .../devicetree/bindings/media/i2c/ov8856.yaml | 140 ++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 141 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/i2c/ov8856.yaml diff --git a/Documentation/devicetree/bindings/media/i2c/ov8856.yaml b/Documentation/devicetree/bindings/media/i2c/ov8856.yaml new file mode 100644 index 000000000000..f78d3eae81cb --- /dev/null +++ b/Documentation/devicetree/bindings/media/i2c/ov8856.yaml @@ -0,0 +1,140 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +# Copyright (c) 2019 MediaTek Inc. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/i2c/ov8856.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Omnivision OV8856 CMOS Sensor Device Tree Bindings + +maintainers: + - Ben Kao + - Dongchun Zhu + +description: |- + The Omnivision OV8856 is a high performance, 1/4-inch, 8 megapixel, CMOS + image sensor that delivers 3264x2448 at 30fps. It provides full-frame, + sub-sampled, and windowed 10-bit MIPI images in various formats via the + Serial Camera Control Bus (SCCB) interface. This chip is programmable + through I2C and two-wire SCCB. The sensor output is available via CSI-2 + serial data output (up to 4-lane). + +properties: + compatible: + const: ovti,ov8856 + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + clock-names: + description: + Input clock for the sensor. + items: + - const: xvclk + + clock-frequency: + description: + Frequency of the xvclk clock in Hertz. + + dovdd-supply: + description: + Definition of the regulator used as interface power supply. + + avdd-supply: + description: + Definition of the regulator used as analog power supply. + + dvdd-supply: + description: + Definition of the regulator used as digital power supply. + + reset-gpios: + description: + The phandle and specifier for the GPIO that controls sensor reset. + This corresponds to the hardware pin XSHUTDOWN which is physically + active low. + + port: + type: object + additionalProperties: false + description: + A node containing an output port node with an endpoint definition + as documented in + Documentation/devicetree/bindings/media/video-interfaces.txt + + properties: + endpoint: + type: object + + properties: + clock-lanes: + maxItems: 1 + + data-lanes: + maxItems: 1 + + link-frequencies: + maxItems: 1 + + remote-endpoint: true + + required: + - clock-lanes + - data-lanes + - remote-endpoint + - link-frequencies + + required: + - endpoint + +required: + - compatible + - reg + - clocks + - clock-names + - clock-frequency + - dovdd-supply + - avdd-supply + - dvdd-supply + - reset-gpios + +additionalProperties: false + +examples: + - | + #include + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + ov8856: camera@10 { + compatible = "ovti,ov8856"; + reg = <0x10>; + + reset-gpios = <&pio 111 GPIO_ACTIVE_LOW>; + pinctrl-names = "default"; + pinctrl-0 = <&clk_24m_cam>; + + clocks = <&cam_osc>; + clock-names = "xvclk"; + clock-frequency = <19200000>; + + avdd-supply = <&mt6358_vcama2_reg>; + dvdd-supply = <&mt6358_vcamd_reg>; + dovdd-supply = <&mt6358_vcamio_reg>; + + port { + wcam_out: endpoint { + remote-endpoint = <&mipi_in_wcam>; + clock-lanes = <0>; + data-lanes = <1 2 3 4>; + link-frequencies = /bits/ 64 <360000000 180000000>; + }; + }; + }; + }; +... \ No newline at end of file diff --git a/MAINTAINERS b/MAINTAINERS index 26f281d9f32a..84b262afd13d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -12489,6 +12489,7 @@ L: linux-media@vger.kernel.org S: Maintained T: git git://linuxtv.org/media_tree.git F: drivers/media/i2c/ov8856.c +F: Documentation/devicetree/bindings/media/i2c/ov8856.yaml OMNIVISION OV9640 SENSOR DRIVER M: Petr Cvek From patchwork Tue Apr 28 18:07:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Foss X-Patchwork-Id: 11515345 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4057B92C for ; Tue, 28 Apr 2020 18:07:44 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id DADEB208E0 for ; Tue, 28 Apr 2020 18:07:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="DtzQlunQ"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="eVf/zNOO" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DADEB208E0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=qeAxiKu8wLUuGQPB01c41p31s6RpPL5N5AUvrsHCrKs=; b=DtzQlunQc08mlB JK3WpxRarrmxS0j/+1htl+5pG5/0HvZ9CY4Cp9dcG7H3CdsTBwwNItha3TmPomweUryGhaHb9WMfd 3HdqcizXqHy11i+22tzersvsmx9w7Iuz/i6aXOVAqRIqqGC/RwFpKEBn5BAozHi6RRqSdXrcVwepI HjFmCFZAW272ObdKY1Pl96UMDe/s4M3gVeTJ3fHnn47UBj/nK4mee88F94Vi4Of9U48VJQfp6VCJS EJAUqvi+0tjo5ykCOuP8CN1grybe3SrOfCjqnygHxz3AUkhl4X3lRWPEj/W37htWdWOD6PwuBBV+c bdWMDk/XkIdq8n7CHgOA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jTUdu-0002M7-67; Tue, 28 Apr 2020 18:07:38 +0000 Received: from mail-wr1-x444.google.com ([2a00:1450:4864:20::444]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jTUdg-0002Ad-LM for linux-arm-kernel@lists.infradead.org; Tue, 28 Apr 2020 18:07:26 +0000 Received: by mail-wr1-x444.google.com with SMTP id k13so25819053wrw.7 for ; Tue, 28 Apr 2020 11:07:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=DWltPrJIPj2U1pq2RNL53+f1OFAV7BP1wwaGZV16ICI=; b=eVf/zNOORX0c+cxJnJ3sjYjFzwtDrffYhSlAdllWKK2ZeJWB5RjOhk2Jsg9hzDK+g5 LYgq2DqXFXfOGHicGSC3/J+/Wf91JJSMWfFRk6KJ+9FR97p648BTrszUQADzxxRgDTxs n4IUEWOlTB2Nm44B4EuMErVYKP48zaFEsF+hzUPjLBa2QoqrRmdF2NM4cuf8/Tz86C+n jtixFKpno5AaXtd/Rz/ZfvFz9XN+1AN3V33pZsnijyoibjA7z1FReFvAykpR3LesLYs8 bmetURWAyUMcZ3iDL3baJI9ZegvmDdTHfs+rnraARa5imuu/SfaSbnibT71pRauspqti +v6A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=DWltPrJIPj2U1pq2RNL53+f1OFAV7BP1wwaGZV16ICI=; b=fkO+vErV5wrgkX4AzCBP8JCLyqI6HygckWLI+Z6kna3uy8j7hfMS3XDcdvtOE4fyf2 0n3IEqcvsCGDC2ifOg7GzLWcd6RC5M3C40fteQRKrb6lakL0aYXZ+vjZV/Hl3hlCDz/5 igJKImoaw1IFBb8sX3PwVwWxUTEhyH9g5LBdFn1Qj8eLFrrb/CF7FVIBWYaXfAqjWtHs rJa4gy15m2vTfrRe568aaNLDImKpKC7X9Kz0VrOd8uJcJQQ6Yda/7tYmgSskgnPHX+YI EEncdDvE5yjVeXYSbCrNX2vcS3qOipykoubo/j69f7A/ynwBV+rnfswlBQghq9YfH4jL hg7Q== X-Gm-Message-State: AGi0PuYs9EDP+JRnfPyhDYYAlVqY5rxun0K5gOo4eTyMLBQBR3AJBgO1 xUan98BbHcCKAVF2mERngi//zA== X-Google-Smtp-Source: APiQypK6gyhGESlhUy3nzPZsB05FbmMK7Pp3d6aM4aqQkcc7l4OOlCa7ldK9pnOqdrxaJZWn7k+RLA== X-Received: by 2002:adf:aad4:: with SMTP id i20mr32722752wrc.47.1588097243365; Tue, 28 Apr 2020 11:07:23 -0700 (PDT) Received: from xps7590.local ([37.120.81.28]) by smtp.gmail.com with ESMTPSA id m14sm26202789wrs.76.2020.04.28.11.07.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Apr 2020 11:07:22 -0700 (PDT) From: Robert Foss To: Andy Shevchenko , Sakari Ailus , Marco Felsch , Maxime Ripard , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v5 v5 2/3] media: ov8856: Add devicetree support Date: Tue, 28 Apr 2020 20:07:17 +0200 Message-Id: <20200428180718.1609826-2-robert.foss@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200428180718.1609826-1-robert.foss@linaro.org> References: <20200428180718.1609826-1-robert.foss@linaro.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200428_110724_739667_A9594C74 X-CRM114-Status: GOOD ( 22.45 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:444 listed in] [list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 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: Fabio Estevam , Dongchun Zhu , Robert Foss , Tomasz Figa Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add match table, enable ov8856_probe() to support both ACPI and DT modes. ACPI and DT modes are primarily distinguished from each other by relying on devm_XXX_get_optional() will return NULL instead of a reference for the desired managed resource. Signed-off-by: Robert Foss --- - Changes since v4: * Maxime & Sakari: Switch to clock-frequency - Changes since v3: * Remove redundant {}-brackets * Compare xvclk_rate to 5% tolerance * Andy: Use dev_fwnode() * Andy: Use %pe instead of %ld + PTR_ERR() * Andy: Invert reset_gpio logic * Andy: Remove dev_dbg() from failing reset_gpio setup * Andy: Use dev_err for logging for failures * Andy: Remove dev_warn from EDEFER/regulator error path * Andy & Sakari: Replaced GPIOD_OUT_XXX with 0/1 * Maxime & Sakari: Verify clock frequency from DT * Sakari: Verify the 'xvclk_rate' is set correctly for ACPI/DT devices * Sakari: Remove duplicate ov8856->dev assignment - Changes since v2: * Added "struct device *dev" member to struct ov8856 * Andy: Switch to optional version of devm_gpiod_get * Andy: Switch to optional version of devm_clk_get * Fabio: Add reset sleep period * Sakari: Unify defines for 19.2Mhz * Sakari: Remove 24Mhz clock, since it isn't needed for supported modes * Sakari: Replace dev_info() with dev_dbg() * Sakari: Switch induction variable type to unsigned * Sakari: Don't wait for reset_gpio when in ACPI mode * Sakari: Pull reset GPIO high on power on failure * Sakari: Add power on/off to resume/suspend * Sakari: Fix indentation * Sakari: Power off during ov8856_remove() * Sakari: Don't sleep during power-on in ACPI mode * Sakari: Switch to getting xvclk from clk_get_rate - Changes since v1: * Andy & Sakari: Make XVCLK optional since to not break ACPI * Fabio: Change n_shutdown_gpio name to reset_gpio * Fabio: Invert reset_gpio due to GPIO_ACTIVE_HIGH -> GPIO_ACTIVE_LOW change * Fabio: Remove empty line * Fabio: Remove real error from devm_gpiod_get() failures * Sakari: ARRAY_SIZE() directly instead of through OV8856_NUM_SUPPLIES * Sakari: Use XVCLK rate as provided by DT drivers/media/i2c/ov8856.c | 139 +++++++++++++++++++++++++++++++++---- 1 file changed, 126 insertions(+), 13 deletions(-) diff --git a/drivers/media/i2c/ov8856.c b/drivers/media/i2c/ov8856.c index 8655842af275..48b02b8d205f 100644 --- a/drivers/media/i2c/ov8856.c +++ b/drivers/media/i2c/ov8856.c @@ -3,10 +3,13 @@ #include #include +#include #include +#include #include #include #include +#include #include #include #include @@ -18,7 +21,7 @@ #define OV8856_LINK_FREQ_360MHZ 360000000ULL #define OV8856_LINK_FREQ_180MHZ 180000000ULL #define OV8856_SCLK 144000000ULL -#define OV8856_MCLK 19200000 +#define OV8856_XVCLK_19_2 19200000 #define OV8856_DATA_LANES 4 #define OV8856_RGB_DEPTH 10 @@ -64,6 +67,12 @@ #define to_ov8856(_sd) container_of(_sd, struct ov8856, sd) +static const char * const ov8856_supply_names[] = { + "dovdd", /* Digital I/O power */ + "avdd", /* Analog power */ + "dvdd", /* Digital core power */ +}; + enum { OV8856_LINK_FREQ_720MBPS, OV8856_LINK_FREQ_360MBPS, @@ -566,6 +575,11 @@ struct ov8856 { struct media_pad pad; struct v4l2_ctrl_handler ctrl_handler; + struct device *dev; + struct clk *xvclk; + struct gpio_desc *reset_gpio; + struct regulator_bulk_data supplies[ARRAY_SIZE(ov8856_supply_names)]; + /* V4L2 Controls */ struct v4l2_ctrl *link_freq; struct v4l2_ctrl *pixel_rate; @@ -908,6 +922,52 @@ static int ov8856_set_stream(struct v4l2_subdev *sd, int enable) return ret; } +static int __ov8856_power_on(struct ov8856 *ov8856) +{ + struct i2c_client *client = v4l2_get_subdevdata(&ov8856->sd); + int ret; + + ret = clk_prepare_enable(ov8856->xvclk); + if (ret < 0) { + dev_err(&client->dev, "failed to enable xvclk\n"); + return ret; + } + + if (is_acpi_node(dev_fwnode(ov8856->dev))) + return 0; + + if (ov8856->reset_gpio) { + gpiod_set_value_cansleep(ov8856->reset_gpio, 1); + usleep_range(1000, 2000); + } + + ret = regulator_bulk_enable(ARRAY_SIZE(ov8856_supply_names), + ov8856->supplies); + if (ret < 0) { + dev_err(&client->dev, "failed to enable regulators\n"); + goto disable_clk; + } + + gpiod_set_value_cansleep(ov8856->reset_gpio, 0); + usleep_range(1500, 1800); + + return 0; + +disable_clk: + gpiod_set_value_cansleep(ov8856->reset_gpio, 1); + clk_disable_unprepare(ov8856->xvclk); + + return ret; +} + +static void __ov8856_power_off(struct ov8856 *ov8856) +{ + gpiod_set_value_cansleep(ov8856->reset_gpio, 1); + regulator_bulk_disable(ARRAY_SIZE(ov8856_supply_names), + ov8856->supplies); + clk_disable_unprepare(ov8856->xvclk); +} + static int __maybe_unused ov8856_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); @@ -918,6 +978,7 @@ static int __maybe_unused ov8856_suspend(struct device *dev) if (ov8856->streaming) ov8856_stop_streaming(ov8856); + __ov8856_power_off(ov8856); mutex_unlock(&ov8856->mutex); return 0; @@ -931,6 +992,8 @@ static int __maybe_unused ov8856_resume(struct device *dev) int ret; mutex_lock(&ov8856->mutex); + + __ov8856_power_on(ov8856); if (ov8856->streaming) { ret = ov8856_start_streaming(ov8856); if (ret) { @@ -1092,29 +1155,58 @@ static int ov8856_identify_module(struct ov8856 *ov8856) return 0; } -static int ov8856_check_hwcfg(struct device *dev) +static int ov8856_get_hwcfg(struct ov8856 *ov8856) { + struct device *dev = ov8856->dev; struct fwnode_handle *ep; struct fwnode_handle *fwnode = dev_fwnode(dev); struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = V4L2_MBUS_CSI2_DPHY }; - u32 mclk; + u32 xvclk_rate; int ret; unsigned int i, j; if (!fwnode) return -ENXIO; - ret = fwnode_property_read_u32(fwnode, "clock-frequency", &mclk); + ret = fwnode_property_read_u32(fwnode, "clock-frequency", + &xvclk_rate); if (ret) return ret; - if (mclk != OV8856_MCLK) { - dev_err(dev, "external clock %d is not supported", mclk); + if (!is_acpi_node(fwnode)) { + ov8856->xvclk = devm_clk_get(dev, "xvclk"); + if (IS_ERR(ov8856->xvclk)) { + dev_err(dev, "could not get xvclk clock (%pe)\n", + ov8856->xvclk); + return PTR_ERR(ov8856->xvclk); + } + + clk_set_rate(ov8856->xvclk, xvclk_rate); + xvclk_rate = clk_get_rate(ov8856->xvclk); + } + + /* external clock must be 19.2MHz, allow 5% tolerance */ + if (xvclk_rate < OV8856_XVCLK_19_2 * 0.95 || + xvclk_rate > OV8856_XVCLK_19_2 * 1.05) { + dev_err(dev, "external clock %d is not supported", xvclk_rate); return -EINVAL; } + ov8856->reset_gpio = devm_gpiod_get_optional(dev, "reset", + GPIOD_OUT_LOW); + if (IS_ERR(ov8856->reset_gpio)) + return PTR_ERR(ov8856->reset_gpio); + + for (i = 0; i < ARRAY_SIZE(ov8856_supply_names); i++) + ov8856->supplies[i].supply = ov8856_supply_names[i]; + + ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ov8856_supply_names), + ov8856->supplies); + if (ret) + return ret; + ep = fwnode_graph_get_next_endpoint(fwnode, NULL); if (!ep) return -ENXIO; @@ -1169,6 +1261,8 @@ static int ov8856_remove(struct i2c_client *client) pm_runtime_disable(&client->dev); mutex_destroy(&ov8856->mutex); + __ov8856_power_off(ov8856); + return 0; } @@ -1177,22 +1271,31 @@ static int ov8856_probe(struct i2c_client *client) struct ov8856 *ov8856; int ret; - ret = ov8856_check_hwcfg(&client->dev); + ov8856 = devm_kzalloc(&client->dev, sizeof(*ov8856), GFP_KERNEL); + if (!ov8856) + return -ENOMEM; + + ov8856->dev = &client->dev; + + ret = ov8856_get_hwcfg(ov8856); if (ret) { - dev_err(&client->dev, "failed to check HW configuration: %d", + dev_err(&client->dev, "failed to get HW configuration: %d", ret); return ret; } - ov8856 = devm_kzalloc(&client->dev, sizeof(*ov8856), GFP_KERNEL); - if (!ov8856) - return -ENOMEM; - v4l2_i2c_subdev_init(&ov8856->sd, client, &ov8856_subdev_ops); + + ret = __ov8856_power_on(ov8856); + if (ret) { + dev_err(&client->dev, "failed to power on\n"); + return ret; + } + ret = ov8856_identify_module(ov8856); if (ret) { dev_err(&client->dev, "failed to find sensor: %d", ret); - return ret; + goto probe_power_off; } mutex_init(&ov8856->mutex); @@ -1238,6 +1341,9 @@ static int ov8856_probe(struct i2c_client *client) v4l2_ctrl_handler_free(ov8856->sd.ctrl_handler); mutex_destroy(&ov8856->mutex); +probe_power_off: + __ov8856_power_off(ov8856); + return ret; } @@ -1254,11 +1360,18 @@ static const struct acpi_device_id ov8856_acpi_ids[] = { MODULE_DEVICE_TABLE(acpi, ov8856_acpi_ids); #endif +static const struct of_device_id ov8856_of_match[] = { + { .compatible = "ovti,ov8856" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, ov8856_of_match); + static struct i2c_driver ov8856_i2c_driver = { .driver = { .name = "ov8856", .pm = &ov8856_pm_ops, .acpi_match_table = ACPI_PTR(ov8856_acpi_ids), + .of_match_table = ov8856_of_match, }, .probe_new = ov8856_probe, .remove = ov8856_remove, From patchwork Tue Apr 28 18:07:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Foss X-Patchwork-Id: 11515347 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 99532112C for ; Tue, 28 Apr 2020 18:08:02 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 62102206A1 for ; Tue, 28 Apr 2020 18:08:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="k8p/lyLa"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="TXM+NLMR" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 62102206A1 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=h1JGthSBm2PQJTbQhTV8XNXy390zA2fnOJ95cxPqXMU=; b=k8p/lyLahFn0N2 382swWiNTJmRq3XC8wKmVKnQzjVhYSyK+eHrEghcx/gD+BW4fdHDnIzgh1Gp23otsmG3z63csD8BA DpMy1q+EkjVSLuytwFJysZqkoARmtJ1bN0wlc5R2Qxl3bjUl/vwvEmr2RHwqE/duye6MWSXorC0Yk 6EhxyHxfgUeXQCsm19VK6jHQY/43HMNqhpjobBRP+n5koJo9SDfVd102Y19sQ6dznyVgxXO+DpvV4 bkmCRChwwts8vLEHjhUWhxyyWK1HxIf/Z8CvW7HkxbJXpiLlM9yCeq7LsE9e8Ge8rrLCgrDP0RLNU e9SwB/dFlK8BxpJri1jQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jTUeB-0002ax-Ll; Tue, 28 Apr 2020 18:07:55 +0000 Received: from mail-wr1-x442.google.com ([2a00:1450:4864:20::442]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jTUdi-0002BB-7f for linux-arm-kernel@lists.infradead.org; Tue, 28 Apr 2020 18:07:27 +0000 Received: by mail-wr1-x442.google.com with SMTP id d15so24161392wrx.3 for ; Tue, 28 Apr 2020 11:07:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=28cDGW7lHDBW0cMjOkUmPSwiyuA8fTJeT/DBNYotCsg=; b=TXM+NLMRCnS9+pSCoTO2uWxK0dqqac8UQX/pcooJaNoiSMsBja1cqbUl3ZbIPeQxjb uaubDOvNUoRBxLdgA06QmhKcoVD47twZy+WdznWp9snzqpArXlLDciomOOQwYZ2gNngX 08Ax13mceLMM1qdsCp5CMzJ+68XA7X/dE7fuhuZVl4ss2ogVUMmP44QJOjTyHEgdG2vH 8GgGPn/MsNL64ig+2r5Wd/swPH1JptGhwuwQZTTL4mqoZkr0BiBXUM3FuF2248STnrDd B415bjkdtM8+Z1rpjWGirq0eqQiWI939m8qkHu0AAhxU2nklyzFyAZkI5+6Op2ikXsjg Gz2g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=28cDGW7lHDBW0cMjOkUmPSwiyuA8fTJeT/DBNYotCsg=; b=OP2oTc2R87+Z2NDd5wmTujRvrowbko+Y3MpVYsJOVU9w7Vs0C3h1zlBc/qmLZUGpNS mvl82kloboADsIiiI3ooNOTI/EfX7yuF+wWlVBg9V4Q8Y5rllOh8AlvGna4CMS7sPH5A LNumxkC9QJcKyIXU/kGDLu2nilbBrjqkTw/JtiFfKBKepCdRfu9AHi//0kUC3CPGpc4A LVfIYoyUunErVdTeAA+Bs+aIzjeuqUH0EHTkR8eIGfR542CPCCZZ6naL38sco53vdGB1 pUSNQgirvpdk8FCMiSBfgvDDwd+vp7JrJNOZbSRwrM1F2R8A0Cq7qj0o5XP0AGxoBXef XXSg== X-Gm-Message-State: AGi0Pubi1u3qNMSb3UkxH1QEcyd2mpBw9ammLCO3UFGpZTKHCi4io354 o0HHfsSC3smzucCQr9CCHEuT3A== X-Google-Smtp-Source: APiQypI8PJzjnfy3x58pQ9Accr3Blr++TnRQfRHkv2Jckw04YP5uWoNw5VlXdSvsvq3SUfkryVkoZA== X-Received: by 2002:a5d:4cc2:: with SMTP id c2mr33703590wrt.130.1588097244819; Tue, 28 Apr 2020 11:07:24 -0700 (PDT) Received: from xps7590.local ([37.120.81.28]) by smtp.gmail.com with ESMTPSA id m14sm26202789wrs.76.2020.04.28.11.07.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Apr 2020 11:07:24 -0700 (PDT) From: Robert Foss To: Andy Shevchenko , Sakari Ailus , Marco Felsch , Maxime Ripard , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v5 v5 3/3] media: ov8856: Implement sensor module revision identification Date: Tue, 28 Apr 2020 20:07:18 +0200 Message-Id: <20200428180718.1609826-3-robert.foss@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200428180718.1609826-1-robert.foss@linaro.org> References: <20200428180718.1609826-1-robert.foss@linaro.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200428_110726_272962_BF8FD839 X-CRM114-Status: GOOD ( 12.12 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:442 listed in] [list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 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: Fabio Estevam , Dongchun Zhu , Robert Foss , Tomasz Figa Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Query the sensor for its module revision, and compare it to known revisions. Currently only the '1B' revision has been added. Signed-off-by: Robert Foss --- - Changes since v3: * Actually add module revision 2A - Changes since v2: * Add module revision 2A * Sakari: Remove ov8856_check_revision() * Sakari: Stop EEPROM streaming mode drivers/media/i2c/ov8856.c | 53 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/drivers/media/i2c/ov8856.c b/drivers/media/i2c/ov8856.c index 48b02b8d205f..a0ba0a5d5aad 100644 --- a/drivers/media/i2c/ov8856.c +++ b/drivers/media/i2c/ov8856.c @@ -32,6 +32,19 @@ #define OV8856_MODE_STANDBY 0x00 #define OV8856_MODE_STREAMING 0x01 +/* module revisions */ +#define OV8856_2A_MODULE 0x01 +#define OV8856_1B_MODULE 0x02 + +/* the OTP read-out buffer is at 0x7000 and 0xf is the offset + * of the byte in the OTP that means the module revision + */ +#define OV8856_MODULE_REVISION 0x700f +#define OV8856_OTP_MODE_CTRL 0x3d84 +#define OV8856_OTP_LOAD_CTRL 0x3d81 +#define OV8856_OTP_MODE_AUTO 0x00 +#define OV8856_OTP_LOAD_CTRL_ENABLE BIT(0) + /* vertical-timings from sensor */ #define OV8856_REG_VTS 0x380e #define OV8856_VTS_MAX 0x7fff @@ -1152,6 +1165,46 @@ static int ov8856_identify_module(struct ov8856 *ov8856) return -ENXIO; } + ret = ov8856_write_reg(ov8856, OV8856_REG_MODE_SELECT, + OV8856_REG_VALUE_08BIT, OV8856_MODE_STREAMING); + if (ret) + return ret; + + ret = ov8856_write_reg(ov8856, OV8856_OTP_MODE_CTRL, + OV8856_REG_VALUE_08BIT, OV8856_OTP_MODE_AUTO); + if (ret) { + dev_err(&client->dev, "failed to set otp mode"); + return ret; + } + + ret = ov8856_write_reg(ov8856, OV8856_OTP_LOAD_CTRL, + OV8856_REG_VALUE_08BIT, + OV8856_OTP_LOAD_CTRL_ENABLE); + if (ret) { + dev_err(&client->dev, "failed to enable load control"); + return ret; + } + + ret = ov8856_read_reg(ov8856, OV8856_MODULE_REVISION, + OV8856_REG_VALUE_08BIT, &val); + if (ret) { + dev_err(&client->dev, "failed to read module revision"); + return ret; + } + + dev_info(&client->dev, "OV8856 revision %x (%s) at address 0x%02x\n", + val, + val == OV8856_2A_MODULE ? "2A" : + val == OV8856_1B_MODULE ? "1B" : "unknown revision", + client->addr); + + ret = ov8856_write_reg(ov8856, OV8856_REG_MODE_SELECT, + OV8856_REG_VALUE_08BIT, OV8856_MODE_STANDBY); + if (ret) { + dev_err(&client->dev, "failed to exit streaming mode"); + return ret; + } + return 0; }