From patchwork Wed Nov 18 20:27:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 11915793 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=-24.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,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 B79B3C63798 for ; Wed, 18 Nov 2020 20:27:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 69FDC2145D for ; Wed, 18 Nov 2020 20:27:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="T6Q2+obx" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726784AbgKRU1W (ORCPT ); Wed, 18 Nov 2020 15:27:22 -0500 Received: from mail.kernel.org ([198.145.29.99]:48198 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726397AbgKRU1W (ORCPT ); Wed, 18 Nov 2020 15:27:22 -0500 Received: from localhost.localdomain (adsl-84-226-167-205.adslplus.ch [84.226.167.205]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 718B42145D; Wed, 18 Nov 2020 20:27:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1605731241; bh=xGqFTU1c3nMS4sK//AsayXJdmZp/WwlprTJ6hOsciYM=; h=From:To:Cc:Subject:Date:From; b=T6Q2+obxsKVgN/X259eH8PAXLe46chX/tWmeD4hKzYcnVMWvF9yhGlT927hCLMnG/ CbXJz3s0e4JESNh30gGHrtXxVcP4+WMyEPPo4IcvqeZl+og4i2kQUFNu0SiOeTMAkc 1KcqgJpbxR25lehL9zxc4RFJ3+7OA2cLZ5N4XEf4= From: Krzysztof Kozlowski To: Sakari Ailus , Mauro Carvalho Chehab , Rob Herring , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Krzysztof Kozlowski , Rob Herring Subject: [PATCH v6 1/4] dt-bindings: media: imx258: add bindings for IMX258 sensor Date: Wed, 18 Nov 2020 21:27:12 +0100 Message-Id: <20201118202715.6692-1-krzk@kernel.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Add bindings for the IMX258 camera sensor. The bindings, just like the driver, are quite limited, e.g. do not support regulator supplies. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Rob Herring --- Changes since v4: 1. Add clock-lanes, 2. Add Rob's review, 3. Add one more example and extend existing one, 4. Add common clock properties (assigned-*). Changes since v3: 1. Document also two lane setup. Changes since v2: 1. Remove clock-frequency, add reset GPIOs, add supplies. 2. Use additionalProperties. Changes since v1: 1. None --- .../devicetree/bindings/media/i2c/imx258.yaml | 140 ++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 141 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/i2c/imx258.yaml diff --git a/Documentation/devicetree/bindings/media/i2c/imx258.yaml b/Documentation/devicetree/bindings/media/i2c/imx258.yaml new file mode 100644 index 000000000000..4a3471fb88a1 --- /dev/null +++ b/Documentation/devicetree/bindings/media/i2c/imx258.yaml @@ -0,0 +1,140 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/i2c/imx258.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Sony IMX258 13 Mpixel CMOS Digital Image Sensor + +maintainers: + - Krzysztof Kozlowski + +description: |- + IMX258 is a diagonal 5.867mm (Type 1/3.06) 13 Mega-pixel CMOS active pixel + type stacked image sensor with a square pixel array of size 4208 x 3120. It + is programmable through I2C interface. Image data is sent through MIPI + CSI-2. + +properties: + compatible: + const: sony,imx258 + + assigned-clocks: true + assigned-clock-parents: true + assigned-clock-rates: true + + clocks: + description: + Clock frequency from 6 to 27 MHz. + maxItems: 1 + + reg: + maxItems: 1 + + reset-gpios: + description: |- + Reference to the GPIO connected to the XCLR pin, if any. + + vana-supply: + description: + Analog voltage (VANA) supply, 2.7 V + + vdig-supply: + description: + Digital I/O voltage (VDIG) supply, 1.2 V + + vif-supply: + description: + Interface voltage (VIF) supply, 1.8 V + + # See ../video-interfaces.txt for more details + port: + type: object + properties: + endpoint: + type: object + properties: + clock-lanes: + const: 0 + + data-lanes: + oneOf: + - items: + - const: 1 + - const: 2 + - const: 3 + - const: 4 + - items: + - const: 1 + - const: 2 + + link-frequencies: + allOf: + - $ref: /schemas/types.yaml#/definitions/uint64-array + description: + Allowed data bus frequencies. + + required: + - clock-lanes + - data-lanes + - link-frequencies + +required: + - compatible + - reg + - port + +additionalProperties: false + +examples: + - | + i2c0 { + #address-cells = <1>; + #size-cells = <0>; + + sensor@6c { + compatible = "sony,imx258"; + reg = <0x6c>; + clocks = <&imx258_clk>; + + port { + endpoint { + remote-endpoint = <&csi1_ep>; + clock-lanes = <0>; + data-lanes = <1 2 3 4>; + link-frequencies = /bits/ 64 <320000000>; + }; + }; + }; + }; + + /* Oscillator on the camera board */ + imx258_clk: clk { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <19200000>; + }; + + - | + i2c0 { + #address-cells = <1>; + #size-cells = <0>; + + sensor@6c { + compatible = "sony,imx258"; + reg = <0x6c>; + clocks = <&imx258_clk>; + + assigned-clocks = <&imx258_clk>; + assigned-clock-rates = <19200000>; + + port { + endpoint { + remote-endpoint = <&csi1_ep>; + clock-lanes = <0>; + data-lanes = <1 2 3 4>; + link-frequencies = /bits/ 64 <633600000>; + }; + }; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 82ea6867ac2e..96ca9d2857db 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -16395,6 +16395,7 @@ M: Sakari Ailus L: linux-media@vger.kernel.org S: Maintained T: git git://linuxtv.org/media_tree.git +F: Documentation/devicetree/bindings/media/i2c/imx258.yaml F: drivers/media/i2c/imx258.c SONY IMX274 SENSOR DRIVER From patchwork Wed Nov 18 20:27:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 11915799 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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 B130FC64E7D for ; Wed, 18 Nov 2020 20:27:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6F75A2145D for ; Wed, 18 Nov 2020 20:27:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="lSv5jzn9" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726908AbgKRU1Z (ORCPT ); Wed, 18 Nov 2020 15:27:25 -0500 Received: from mail.kernel.org ([198.145.29.99]:48240 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726397AbgKRU1X (ORCPT ); Wed, 18 Nov 2020 15:27:23 -0500 Received: from localhost.localdomain (adsl-84-226-167-205.adslplus.ch [84.226.167.205]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A1358246C2; Wed, 18 Nov 2020 20:27:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1605731243; bh=awOKI+XahHrzKqFqIy2x/6lyBTxRkf5j29o/Rpfi+pg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lSv5jzn9L+7ukhSuSaft3SsDYzTYNaCYN2H7CeFa7lYE7xmUHMgGC/w6hJdM01BRc /M9thQPJbtsf41w91xm3aqg15wswOB51oqxNw5/eaXVjNGDzwZgpU+e8AjM+AXjOzs tWJv3XUqayaNvukqo/0QR3l+SLsJn+VeK03/BvSk= From: Krzysztof Kozlowski To: Sakari Ailus , Mauro Carvalho Chehab , Rob Herring , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Krzysztof Kozlowski Subject: [PATCH v6 2/4] media: i2c: imx258: add support for binding via device tree Date: Wed, 18 Nov 2020 21:27:13 +0100 Message-Id: <20201118202715.6692-2-krzk@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201118202715.6692-1-krzk@kernel.org> References: <20201118202715.6692-1-krzk@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The IMX258 can be used also on embedded designs using device tree so allow the sensor to bind to a device tree node. Signed-off-by: Krzysztof Kozlowski --- Changes since v1: 1. None --- drivers/media/i2c/imx258.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c index df62c69a48c0..ba7f29622974 100644 --- a/drivers/media/i2c/imx258.c +++ b/drivers/media/i2c/imx258.c @@ -1291,11 +1291,18 @@ static const struct acpi_device_id imx258_acpi_ids[] = { MODULE_DEVICE_TABLE(acpi, imx258_acpi_ids); #endif +static const struct of_device_id imx258_dt_ids[] = { + { .compatible = "sony,imx258" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, imx258_dt_ids); + static struct i2c_driver imx258_i2c_driver = { .driver = { .name = "imx258", .pm = &imx258_pm_ops, .acpi_match_table = ACPI_PTR(imx258_acpi_ids), + .of_match_table = imx258_dt_ids, }, .probe_new = imx258_probe, .remove = imx258_remove, From patchwork Wed Nov 18 20:27:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 11915795 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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 95568C64E69 for ; Wed, 18 Nov 2020 20:27:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3711521D1A for ; Wed, 18 Nov 2020 20:27:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="KRcBF5IX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727011AbgKRU11 (ORCPT ); Wed, 18 Nov 2020 15:27:27 -0500 Received: from mail.kernel.org ([198.145.29.99]:48272 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726397AbgKRU10 (ORCPT ); Wed, 18 Nov 2020 15:27:26 -0500 Received: from localhost.localdomain (adsl-84-226-167-205.adslplus.ch [84.226.167.205]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A8CCB21D1A; Wed, 18 Nov 2020 20:27:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1605731245; bh=zWUF7gy1Qf1dX62rn0FAOk2xbwwQdbfUgsxvI5Sklh4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KRcBF5IXReP3/8RuXXB2P1nmbuncdDahslf9q3PtUMZvVyuaGyBPH3++du6sEDCig FcLjaDA1LhvZWQAToMkV6ML4ahBHnI2zSrG5KIRTfv2br3sXrfavcZ+3H7l2mZ+rC+ M9UGOh26klSuwqIgQ+HtcWU6ijd6XYan7RTdlUIc= From: Krzysztof Kozlowski To: Sakari Ailus , Mauro Carvalho Chehab , Rob Herring , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Krzysztof Kozlowski Subject: [PATCH v6 3/4] media: i2c: imx258: simplify getting state container Date: Wed, 18 Nov 2020 21:27:14 +0100 Message-Id: <20201118202715.6692-3-krzk@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201118202715.6692-1-krzk@kernel.org> References: <20201118202715.6692-1-krzk@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The pointer to 'struct v4l2_subdev' is stored in drvdata via v4l2_i2c_subdev_init() so there is no point of a dance like: struct i2c_client *client = to_i2c_client(struct device *dev) struct v4l2_subdev *sd = i2c_get_clientdata(client); This allows to remove local variable 'client' and few pointer dereferences. Signed-off-by: Krzysztof Kozlowski --- Changes since v3: 1. None Changes since v2: 1. New patch --- drivers/media/i2c/imx258.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c index ba7f29622974..505981e02cff 100644 --- a/drivers/media/i2c/imx258.c +++ b/drivers/media/i2c/imx258.c @@ -1018,8 +1018,7 @@ static int imx258_set_stream(struct v4l2_subdev *sd, int enable) static int __maybe_unused imx258_suspend(struct device *dev) { - struct i2c_client *client = to_i2c_client(dev); - struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct v4l2_subdev *sd = dev_get_drvdata(dev); struct imx258 *imx258 = to_imx258(sd); if (imx258->streaming) @@ -1030,8 +1029,7 @@ static int __maybe_unused imx258_suspend(struct device *dev) static int __maybe_unused imx258_resume(struct device *dev) { - struct i2c_client *client = to_i2c_client(dev); - struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct v4l2_subdev *sd = dev_get_drvdata(dev); struct imx258 *imx258 = to_imx258(sd); int ret; From patchwork Wed Nov 18 20:27:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 11915797 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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 4DE0DC64E7B for ; Wed, 18 Nov 2020 20:27:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F17282145D for ; Wed, 18 Nov 2020 20:27:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="HPNX9dd1" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727063AbgKRU13 (ORCPT ); Wed, 18 Nov 2020 15:27:29 -0500 Received: from mail.kernel.org ([198.145.29.99]:48284 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726397AbgKRU12 (ORCPT ); Wed, 18 Nov 2020 15:27:28 -0500 Received: from localhost.localdomain (adsl-84-226-167-205.adslplus.ch [84.226.167.205]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B24FE246BB; Wed, 18 Nov 2020 20:27:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1605731247; bh=SiKYyNuVm2mB5fmXmvYS4evDr6B1t4R+Rg/KThxSQ7I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HPNX9dd13cIiF//pBhj3WvQ7LshhI9Mshia1DnyUUOir8wMmLeOVkXSP9CZQhEgcH CrSnZx4ykDWb7YpnzYhKxONxcAk5afhTe8N1PIz6+I7B9qULHHcfvqT2Nk9eEnmqrD UTQghZKRMmmCeofk0wBcgylR1v4eLt/gVf0B8NI0= From: Krzysztof Kozlowski To: Sakari Ailus , Mauro Carvalho Chehab , Rob Herring , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Krzysztof Kozlowski Subject: [PATCH v6 4/4] media: i2c: imx258: get clock from device properties and enable it via runtime PM Date: Wed, 18 Nov 2020 21:27:15 +0100 Message-Id: <20201118202715.6692-4-krzk@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201118202715.6692-1-krzk@kernel.org> References: <20201118202715.6692-1-krzk@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The IMX258 sensor driver checked in device properties for a clock-frequency property which actually does not mean that the clock is really running such frequency or is it even enabled. Get the provided clock and check it frequency. If none is provided, fall back to old property. Enable the clock when accessing the IMX258 registers and when streaming starts with runtime PM. Signed-off-by: Krzysztof Kozlowski --- Changes since v5: 1. Move clk_get_rate() out of else block. Changes since v4: 1. Add missing imx258_power_off. Changes since v3: 1. None Changes since v2: 1. Do not try to set drvdata, wrap lines. 2. Use dev_dbg. Changes since v1: 1. Use runtime PM for clock toggling --- drivers/media/i2c/imx258.c | 69 +++++++++++++++++++++++++++++++++----- 1 file changed, 61 insertions(+), 8 deletions(-) diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c index 505981e02cff..61d74b794582 100644 --- a/drivers/media/i2c/imx258.c +++ b/drivers/media/i2c/imx258.c @@ -2,6 +2,7 @@ // Copyright (C) 2018 Intel Corporation #include +#include #include #include #include @@ -68,6 +69,9 @@ #define REG_CONFIG_MIRROR_FLIP 0x03 #define REG_CONFIG_FLIP_TEST_PATTERN 0x02 +/* Input clock frequency in Hz */ +#define IMX258_INPUT_CLOCK_FREQ 19200000 + struct imx258_reg { u16 address; u8 val; @@ -610,6 +614,8 @@ struct imx258 { /* Streaming on/off */ bool streaming; + + struct clk *clk; }; static inline struct imx258 *to_imx258(struct v4l2_subdev *_sd) @@ -972,6 +978,29 @@ static int imx258_stop_streaming(struct imx258 *imx258) return 0; } +static int imx258_power_on(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct imx258 *imx258 = to_imx258(sd); + int ret; + + ret = clk_prepare_enable(imx258->clk); + if (ret) + dev_err(dev, "failed to enable clock\n"); + + return ret; +} + +static int imx258_power_off(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct imx258 *imx258 = to_imx258(sd); + + clk_disable_unprepare(imx258->clk); + + return 0; +} + static int imx258_set_stream(struct v4l2_subdev *sd, int enable) { struct imx258 *imx258 = to_imx258(sd); @@ -1199,9 +1228,26 @@ static int imx258_probe(struct i2c_client *client) int ret; u32 val = 0; - device_property_read_u32(&client->dev, "clock-frequency", &val); - if (val != 19200000) + imx258 = devm_kzalloc(&client->dev, sizeof(*imx258), GFP_KERNEL); + if (!imx258) + return -ENOMEM; + + imx258->clk = devm_clk_get_optional(&client->dev, NULL); + if (!imx258->clk) { + dev_dbg(&client->dev, + "no clock provided, using clock-frequency property\n"); + + device_property_read_u32(&client->dev, "clock-frequency", &val); + if (val != IMX258_INPUT_CLOCK_FREQ) + return -EINVAL; + } else if (IS_ERR(imx258->clk)) { + return dev_err_probe(&client->dev, PTR_ERR(imx258->clk), + "error getting clock\n"); + } + if (clk_get_rate(imx258->clk) != IMX258_INPUT_CLOCK_FREQ) { + dev_err(&client->dev, "input clock frequency not supported\n"); return -EINVAL; + } /* * Check that the device is mounted upside down. The driver only @@ -1211,24 +1257,25 @@ static int imx258_probe(struct i2c_client *client) if (ret || val != 180) return -EINVAL; - imx258 = devm_kzalloc(&client->dev, sizeof(*imx258), GFP_KERNEL); - if (!imx258) - return -ENOMEM; - /* Initialize subdev */ v4l2_i2c_subdev_init(&imx258->sd, client, &imx258_subdev_ops); + /* Will be powered off via pm_runtime_idle */ + ret = imx258_power_on(&client->dev); + if (ret) + return ret; + /* Check module identity */ ret = imx258_identify_module(imx258); if (ret) - return ret; + goto error_identify; /* Set default mode to max resolution */ imx258->cur_mode = &supported_modes[0]; ret = imx258_init_controls(imx258); if (ret) - return ret; + goto error_identify; /* Initialize subdev */ imx258->sd.internal_ops = &imx258_internal_ops; @@ -1258,6 +1305,9 @@ static int imx258_probe(struct i2c_client *client) error_handler_free: imx258_free_controls(imx258); +error_identify: + imx258_power_off(&client->dev); + return ret; } @@ -1271,6 +1321,8 @@ static int imx258_remove(struct i2c_client *client) imx258_free_controls(imx258); pm_runtime_disable(&client->dev); + if (!pm_runtime_status_suspended(&client->dev)) + imx258_power_off(&client->dev); pm_runtime_set_suspended(&client->dev); return 0; @@ -1278,6 +1330,7 @@ static int imx258_remove(struct i2c_client *client) static const struct dev_pm_ops imx258_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(imx258_suspend, imx258_resume) + SET_RUNTIME_PM_OPS(imx258_power_off, imx258_power_on, NULL) }; #ifdef CONFIG_ACPI