From patchwork Thu Jan 26 16:59:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 647870 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 2345EC05027 for ; Thu, 26 Jan 2023 16:59:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231806AbjAZQ7j (ORCPT ); Thu, 26 Jan 2023 11:59:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37670 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231809AbjAZQ7i (ORCPT ); Thu, 26 Jan 2023 11:59:38 -0500 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5993B5A830 for ; Thu, 26 Jan 2023 08:59:35 -0800 (PST) Received: from uno.LocalDomain (93-61-96-190.ip145.fastwebnet.it [93.61.96.190]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 595D11280; Thu, 26 Jan 2023 17:59:30 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1674752370; bh=f2k9q7Re3peKyS0ZaIlRLeBjl/dNgG00PoMxS0pCk0o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Kbx2MAg9MXJm6e/F8AMUX/9yZ1wECvBh0YFDWSzhJ9zFK4GB4qUX1R8CYdx9l0ma+ 9WGL70WU0J5l5yBXtjAzTUTNdgwNQmyDwu9GVieqKr1yAPAJdLdbR03+MCfJFWWzqB lDeWAyjThu1BWua0E6pZr1dysUhmh9nTGZXrQCZI= From: Jacopo Mondi To: Chiranjeevi Rapolu , Luca Weiss Cc: Jacopo Mondi , laurent.pinchart@ideasonboard.com, sakari.ailus@iki.fi, Mauro Carvalho Chehab , linux-media@vger.kernel.org Subject: [PATCH v6 5/9] media: i2c: ov5670: Probe GPIOs Date: Thu, 26 Jan 2023 17:59:05 +0100 Message-Id: <20230126165909.121302-6-jacopo.mondi@ideasonboard.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230126165909.121302-1-jacopo.mondi@ideasonboard.com> References: <20230126165909.121302-1-jacopo.mondi@ideasonboard.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The OV5670 has a powerdown and reset pin, named respectively "PWDN" and "XSHUTDOWN". Optionally probe the gpios connected to the pins during the driver probe routine. Signed-off-by: Jacopo Mondi Reviewed-by: Laurent Pinchart --- drivers/media/i2c/ov5670.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/drivers/media/i2c/ov5670.c b/drivers/media/i2c/ov5670.c index e71f13360480..0290f33f619d 100644 --- a/drivers/media/i2c/ov5670.c +++ b/drivers/media/i2c/ov5670.c @@ -3,6 +3,7 @@ #include #include +#include #include #include #include @@ -1848,6 +1849,10 @@ struct ov5670 { /* Regulators */ struct regulator_bulk_data supplies[OV5670_NUM_SUPPLIES]; + /* Power-down and reset gpios. */ + struct gpio_desc *pwdn_gpio; /* PWDNB pin. */ + struct gpio_desc *reset_gpio; /* XSHUTDOWN pin. */ + /* To serialize asynchronus callbacks */ struct mutex mutex; @@ -2500,6 +2505,23 @@ static int ov5670_regulators_probe(struct ov5670 *ov5670) ov5670->supplies); } +static int ov5670_gpio_probe(struct ov5670 *ov5670) +{ + struct i2c_client *client = v4l2_get_subdevdata(&ov5670->sd); + + ov5670->pwdn_gpio = devm_gpiod_get_optional(&client->dev, "powerdown", + GPIOD_OUT_LOW); + if (IS_ERR(ov5670->pwdn_gpio)) + return PTR_ERR(ov5670->pwdn_gpio); + + ov5670->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset", + GPIOD_OUT_LOW); + if (IS_ERR(ov5670->reset_gpio)) + return PTR_ERR(ov5670->reset_gpio); + + return 0; +} + static int ov5670_probe(struct i2c_client *client) { struct ov5670 *ov5670; @@ -2540,6 +2562,12 @@ static int ov5670_probe(struct i2c_client *client) goto error_print; } + ret = ov5670_gpio_probe(ov5670); + if (ret) { + err_msg = "GPIO probe failed"; + goto error_print; + } + full_power = acpi_dev_state_d0(&client->dev); if (full_power) { /* Check module identity */