From patchwork Tue Sep 13 16:41:03 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Torokhov X-Patchwork-Id: 605661 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 2412BECAAD8 for ; Tue, 13 Sep 2022 17:45:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233435AbiIMRpi (ORCPT ); Tue, 13 Sep 2022 13:45:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42162 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233498AbiIMRpB (ORCPT ); Tue, 13 Sep 2022 13:45:01 -0400 Received: from mail-pj1-x1035.google.com (mail-pj1-x1035.google.com [IPv6:2607:f8b0:4864:20::1035]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8B4916557F; Tue, 13 Sep 2022 09:41:09 -0700 (PDT) Received: by mail-pj1-x1035.google.com with SMTP id s14-20020a17090a6e4e00b0020057c70943so16214955pjm.1; Tue, 13 Sep 2022 09:41:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date; bh=A2Rj9sS1Fjs/+fiIRS4OKQZgMWnN/d2vmPGQj8QoUOc=; b=JoxbvLwkdMyeGanYCTnaRBN2DRM/rPM8P6QeFl2hBucjmx5QFD+IBAOb5AlnDmCVWZ 2mrTN3uilrdOUaEUHxWOxkPLJD32AGcC8WTtVbxtbbB/JgwczNJoF6JohCYAq+Qog00B UKl9dy+sY/mAhgB+CG0h/G1dpMLKvVKfMTvNKWm9LpWjz+bGce/Wf1SShTCo8vXAg8iJ 5yl8Jxe02gHo5XL8P5fP2fFXgKvsQWAZ6KhIxUFrjozvb+TWWrnfTNH9YljiEnhpip8u EoEMc83Zeu9CKRPTG5X6Ll0dCKlH9HGrUxV9y1/krNA11TARNDE39MHs9sPiNXOM9TBv EJUA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date; bh=A2Rj9sS1Fjs/+fiIRS4OKQZgMWnN/d2vmPGQj8QoUOc=; b=kLr0BRjDchnytGdqGMYQt375Zk+Pa330ptw2MQLP2n9KmUYSE3KKdMmRi3CIRhBdzR S3gzirZlBLbo3dpo+jrL55J7abWLsC5Gaj8NfuspjuvjZl/DHadkKzkOlBwwa3xaB/P7 Sb0U9bpr2Me8z+bDwGMUemwFYrArfYDUAz9hV+0Tq0c9N2GpDeH5D8vg/GahPRGtNKl1 KQEFgXesB8hcGoP3EfDz0a0GtATJJhcSXhgn4V0heqR9s2raFZy1RnKIb1NehudqFuM4 vKfls1cqRSFn+e/KG4ebrj2wlbGlZ0Hqt/Y6Z2A1xBU21tI7xDnoglUqvbhL8HG80UEs xiiQ== X-Gm-Message-State: ACgBeo3Nz9teiPUXtAq5AmH9xYt2yHYktjiRgFCg8Mf1UPLKM73BH039 BKt4y9GfN/CD/ie9auNwqUg= X-Google-Smtp-Source: AA6agR5F+IVKnrECVDn3p+yIBcUysGjy3zydDPF8816rl1m7DIno6uJ83cFOyLfmocT/NP3Gff/JGA== X-Received: by 2002:a17:902:8d8a:b0:16f:21fb:b97a with SMTP id v10-20020a1709028d8a00b0016f21fbb97amr32266273plo.160.1663087268831; Tue, 13 Sep 2022 09:41:08 -0700 (PDT) Received: from dtor-ws.mtv.corp.google.com ([2620:15c:202:201:b126:15e1:55ae:d9eb]) by smtp.gmail.com with ESMTPSA id g3-20020aa79f03000000b005465ffaa89dsm1798449pfr.184.2022.09.13.09.41.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Sep 2022 09:41:08 -0700 (PDT) From: Dmitry Torokhov To: Mauro Carvalho Chehab , Alim Akhtar , Krzysztof Kozlowski , Linus Walleij Cc: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/2] ARM: dts: exynos: correct s5k6a3 reset polarity on Midas family Date: Tue, 13 Sep 2022 09:41:03 -0700 Message-Id: <20220913164104.203957-1-dmitry.torokhov@gmail.com> X-Mailer: git-send-email 2.37.2.789.g6183377224-goog MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org According to s5k6a3 driver code, the reset line for the chip appears to be active low. This also matches the typical polarity of reset lines in general. Let's fix it up as having correct polarity in DTS is important when the driver will be switched over to gpiod API. Fixes: b4fec64758ab ("ARM: dts: Add camera device nodes for Exynos4412 TRATS2 board") Signed-off-by: Dmitry Torokhov Reviewed-by: Linus Walleij Reviewed-by: Linus Walleij --- arch/arm/boot/dts/exynos4412-midas.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/exynos4412-midas.dtsi b/arch/arm/boot/dts/exynos4412-midas.dtsi index b967397a46c5..8e1c19a8ad06 100644 --- a/arch/arm/boot/dts/exynos4412-midas.dtsi +++ b/arch/arm/boot/dts/exynos4412-midas.dtsi @@ -586,7 +586,7 @@ image-sensor@10 { clocks = <&camera 1>; clock-names = "extclk"; samsung,camclk-out = <1>; - gpios = <&gpm1 6 GPIO_ACTIVE_HIGH>; + gpios = <&gpm1 6 GPIO_ACTIVE_LOW>; port { is_s5k6a3_ep: endpoint { From patchwork Tue Sep 13 16:41:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Torokhov X-Patchwork-Id: 606071 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 D6F68C6FA8B for ; Tue, 13 Sep 2022 17:45:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233502AbiIMRpk (ORCPT ); Tue, 13 Sep 2022 13:45:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42502 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232941AbiIMRpH (ORCPT ); Tue, 13 Sep 2022 13:45:07 -0400 Received: from mail-pf1-x433.google.com (mail-pf1-x433.google.com [IPv6:2607:f8b0:4864:20::433]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F1C7F7F110; Tue, 13 Sep 2022 09:41:10 -0700 (PDT) Received: by mail-pf1-x433.google.com with SMTP id a80so3718155pfa.4; Tue, 13 Sep 2022 09:41:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date; bh=flmsIEbMJVaOU2duL6ZI4DormffxlXc3pT4gpX1YVyY=; b=oJJympb8sMAda6Xe65RluPDRWqjg1x6o7LcFrt9uHz2+NW1k1V7RYr9YoGKRBv/wSu ++W8Jl1WsbjgihEENvCBk9QIYRkkw7h0HXk+9+1gNzwpQG9BkcIcnPVMGlNCkG8UdJ9X 5O36eSqVORvrezGRv4/Y0AzpPIrHU52FgALIqjzPZ7K67QHalZmod9pUv2PTxuTOD1yQ aMmRNoHjp5CP9sukegIrzpZ7r3hjQz8NWyVafL6+QimJNU35XMT/XR1FCi6XA1uDOn72 bowo1DfGyVp10HIpqeit4l0X5Hf2KfsAmmc5eCVPMx7EHH8G2/1r1K57uBj91ubRgDbK zb2Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date; bh=flmsIEbMJVaOU2duL6ZI4DormffxlXc3pT4gpX1YVyY=; b=Ww24LJGpLItvprPxNKeXFgWAyQNVJtA4GFXyJj/tBqKcU3yz53u4lb4cZnkvu4ytrY Fiyh3lB69DGHLjYnVd/GZiBHU4EnfWJxOITFUFV1RA/TXFqWaXk8ZWOSvHBb8oInPLdI L0oQsUNmIw4uNy8oZJh/k1N5+7ZLxse5Dj08px8Z8f43xAdcHwKDUL+DdibVWzL7+c7M IY1OYWs1AZX0T8UBKuDST/Rb1lNn9GBS572MfDAvfLF6BsVEUoenaKCszU7upprecHND lO27T9MVF+gd09o279oEixFuE7mR3R1RFbgpIv6DXrDkMCIJgvbUIEKaQD4TQxT53jVo SY8g== X-Gm-Message-State: ACgBeo3BKCmR+Txrrg17+rcjzln0NUPpjN4w4Crn6R9Ece1bX7ocI/O7 75FwwW46ZMu/vFibEV+llIc= X-Google-Smtp-Source: AA6agR7dbwTHN0hiiTca6RAq94QQYffu8spociGapyfiLX7vgcK24At969jRtTFzo15NXaz20VfOOA== X-Received: by 2002:a63:2c4c:0:b0:434:e001:89fd with SMTP id s73-20020a632c4c000000b00434e00189fdmr28188426pgs.444.1663087270291; Tue, 13 Sep 2022 09:41:10 -0700 (PDT) Received: from dtor-ws.mtv.corp.google.com ([2620:15c:202:201:b126:15e1:55ae:d9eb]) by smtp.gmail.com with ESMTPSA id g3-20020aa79f03000000b005465ffaa89dsm1798449pfr.184.2022.09.13.09.41.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Sep 2022 09:41:09 -0700 (PDT) From: Dmitry Torokhov To: Mauro Carvalho Chehab , Alim Akhtar , Krzysztof Kozlowski , Linus Walleij Cc: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] media: i2c: s5k6a3: switch to using gpiod API Date: Tue, 13 Sep 2022 09:41:04 -0700 Message-Id: <20220913164104.203957-2-dmitry.torokhov@gmail.com> X-Mailer: git-send-email 2.37.2.789.g6183377224-goog In-Reply-To: <20220913164104.203957-1-dmitry.torokhov@gmail.com> References: <20220913164104.203957-1-dmitry.torokhov@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org This patch switches the driver away from legacy gpio/of_gpio API to gpiod API, and removes one of the last uses of of_get_gpio_flags(). Signed-off-by: Dmitry Torokhov Reviewed-by: Linus Walleij Tested-by: Marek Szyprowski --- drivers/media/i2c/s5k6a3.c | 30 +++++++++++------------------- 1 file changed, 11 insertions(+), 19 deletions(-) diff --git a/drivers/media/i2c/s5k6a3.c b/drivers/media/i2c/s5k6a3.c index a4efd6d10b43..ef6673b10580 100644 --- a/drivers/media/i2c/s5k6a3.c +++ b/drivers/media/i2c/s5k6a3.c @@ -9,12 +9,12 @@ #include #include #include +#include #include -#include +#include #include #include #include -#include #include #include #include @@ -59,7 +59,7 @@ struct s5k6a3 { struct v4l2_subdev subdev; struct media_pad pad; struct regulator_bulk_data supplies[S5K6A3_NUM_SUPPLIES]; - int gpio_reset; + struct gpio_desc *gpio_reset; struct mutex lock; struct v4l2_mbus_framefmt format; struct clk *clock; @@ -216,11 +216,11 @@ static int __s5k6a3_power_on(struct s5k6a3 *sensor) goto error_clk; } - gpio_set_value(sensor->gpio_reset, 1); + gpiod_set_value_cansleep(sensor->gpio_reset, 0); usleep_range(600, 800); - gpio_set_value(sensor->gpio_reset, 0); + gpiod_set_value_cansleep(sensor->gpio_reset, 1); usleep_range(600, 800); - gpio_set_value(sensor->gpio_reset, 1); + gpiod_set_value_cansleep(sensor->gpio_reset, 0); /* Delay needed for the sensor initialization */ msleep(20); @@ -240,7 +240,7 @@ static int __s5k6a3_power_off(struct s5k6a3 *sensor) { int i; - gpio_set_value(sensor->gpio_reset, 0); + gpiod_set_value_cansleep(sensor->gpio_reset, 1); for (i = S5K6A3_NUM_SUPPLIES - 1; i >= 0; i--) regulator_disable(sensor->supplies[i].consumer); @@ -285,32 +285,24 @@ static int s5k6a3_probe(struct i2c_client *client) struct device *dev = &client->dev; struct s5k6a3 *sensor; struct v4l2_subdev *sd; - int gpio, i, ret; + int i, ret; sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL); if (!sensor) return -ENOMEM; mutex_init(&sensor->lock); - sensor->gpio_reset = -EINVAL; - sensor->clock = ERR_PTR(-EINVAL); sensor->dev = dev; sensor->clock = devm_clk_get(sensor->dev, S5K6A3_CLK_NAME); if (IS_ERR(sensor->clock)) return PTR_ERR(sensor->clock); - gpio = of_get_gpio_flags(dev->of_node, 0, NULL); - if (!gpio_is_valid(gpio)) - return gpio; - - ret = devm_gpio_request_one(dev, gpio, GPIOF_OUT_INIT_LOW, - S5K6A3_DRV_NAME); - if (ret < 0) + sensor->gpio_reset = devm_gpiod_get(dev, NULL, GPIOD_OUT_HIGH); + ret = PTR_ERR_OR_ZERO(sensor->gpio_reset); + if (ret) return ret; - sensor->gpio_reset = gpio; - if (of_property_read_u32(dev->of_node, "clock-frequency", &sensor->clock_frequency)) { sensor->clock_frequency = S5K6A3_DEFAULT_CLK_FREQ;