From patchwork Thu Jul 28 13:02:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Stein X-Patchwork-Id: 594152 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 2546CC04A68 for ; Thu, 28 Jul 2022 13:02:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238859AbiG1NCx (ORCPT ); Thu, 28 Jul 2022 09:02:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41330 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238655AbiG1NCv (ORCPT ); Thu, 28 Jul 2022 09:02:51 -0400 Received: from mx1.tq-group.com (mx1.tq-group.com [93.104.207.81]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 34CDE40BF8; Thu, 28 Jul 2022 06:02:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tq-group.com; i=@tq-group.com; q=dns/txt; s=key1; t=1659013370; x=1690549370; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=eUVoM8eILSRtiJWPnfEMpUTwJ5DdzPLtU9RvqhESVtc=; b=mgKv2/jhBf+FU4p2CY0+/kj+H9M49yi3LWTIUlLK7CI4ngQuu/3LsYub 2cWVCMI6Aq4jS2Zfk/WSh/wNESoVVFhbAp6LMLD+9Iv2LssIfQ8iyABcn Yrkjhbbo042LTTfOGeYWsqCvN/vkSJJaShn1w1pHdR1sFKGxHxaPjvAEe ZnAxb8leT7/CUO3N20z5gLtfAdOvwRzLceCrGwqSJ13UxoGcJFt8LBeL8 IZcv6rk7SKU/RqChR48Kgs1+Xmq7DUzXStJKZfopUBnZ/uRweBQgF3Tjo tedN3fZnp9gw56VJMnz5muH6suQc0fnsoffnWqvD6eolYuS7QwO45KiMS A==; X-IronPort-AV: E=Sophos;i="5.93,198,1654552800"; d="scan'208";a="25321373" Received: from unknown (HELO tq-pgp-pr1.tq-net.de) ([192.168.6.15]) by mx1-pgp.tq-group.com with ESMTP; 28 Jul 2022 15:02:44 +0200 Received: from mx1.tq-group.com ([192.168.6.7]) by tq-pgp-pr1.tq-net.de (PGP Universal service); Thu, 28 Jul 2022 15:02:44 +0200 X-PGP-Universal: processed; by tq-pgp-pr1.tq-net.de on Thu, 28 Jul 2022 15:02:44 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tq-group.com; i=@tq-group.com; q=dns/txt; s=key1; t=1659013364; x=1690549364; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=eUVoM8eILSRtiJWPnfEMpUTwJ5DdzPLtU9RvqhESVtc=; b=YOdtc5+BX264kYfXAYnzbuyq2GV6rqWe+yY23UlhE3vQRMbRE6cGp3jG fEH6KDyefpBciSMKxDZbbf98LEVtIHVfN6qYCkNjqOf7WrB9TBcSR+E6u bTyf7bQhbH/vIfqSncOeZARvgMH5Izf05EWLuhfDkiD9lg2lbzcOF8Ty0 DGOjE4Hicvd91EQI3e/winH0YErI83sGSSMszDFr0JZNhKpkU2MgRGzlS 5AVl5IxF0jqjD/rlj1ow+OA0A4AAf8Sox1WjjEfRjJp9g9BQYokHUx1NN WiMxQjKiAeujXAqH0/kEeagnElPDekSThnaTSMxxdl4hj4Ici4QL+gvUM A==; X-IronPort-AV: E=Sophos;i="5.93,198,1654552800"; d="scan'208";a="25321372" Received: from vtuxmail01.tq-net.de ([10.115.0.20]) by mx1.tq-group.com with ESMTP; 28 Jul 2022 15:02:44 +0200 Received: from steina-w.tq-net.de (unknown [10.123.49.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by vtuxmail01.tq-net.de (Postfix) with ESMTPSA id 138A2280056; Thu, 28 Jul 2022 15:02:44 +0200 (CEST) From: Alexander Stein To: "Paul J . Murphy" , Daniele Alessandrelli , Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski Cc: Alexander Stein , linux-media@vger.kernel.org, devicetree@vger.kernel.org, Sakari Ailus Subject: [PATCH v4 5/7] media: i2c: ov9282: Add regulator support Date: Thu, 28 Jul 2022 15:02:35 +0200 Message-Id: <20220728130237.3396663-6-alexander.stein@ew.tq-group.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220728130237.3396663-1-alexander.stein@ew.tq-group.com> References: <20220728130237.3396663-1-alexander.stein@ew.tq-group.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Need in case the sensors is supplied by a switchable regulator. Signed-off-by: Alexander Stein --- drivers/media/i2c/ov9282.c | 39 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/drivers/media/i2c/ov9282.c b/drivers/media/i2c/ov9282.c index c8d83a29f9bb..352dbe21a902 100644 --- a/drivers/media/i2c/ov9282.c +++ b/drivers/media/i2c/ov9282.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include @@ -55,6 +56,14 @@ #define OV9282_REG_MIN 0x00 #define OV9282_REG_MAX 0xfffff +static const char * const ov9282_supply_names[] = { + "avdd", /* Analog power */ + "dovdd", /* Digital I/O power */ + "dvdd", /* Digital core power */ +}; + +#define OV9282_NUM_SUPPLIES ARRAY_SIZE(ov9282_supply_names) + /** * struct ov9282_reg - ov9282 sensor register * @address: Register address @@ -126,6 +135,7 @@ struct ov9282 { struct media_pad pad; struct gpio_desc *reset_gpio; struct clk *inclk; + struct regulator_bulk_data supplies[OV9282_NUM_SUPPLIES]; struct v4l2_ctrl_handler ctrl_handler; struct v4l2_ctrl *link_freq_ctrl; struct v4l2_ctrl *pclk_ctrl; @@ -882,10 +892,19 @@ static int ov9282_power_on(struct device *dev) goto error_reset; } + ret = regulator_bulk_enable(ARRAY_SIZE(ov9282->supplies), + ov9282->supplies); + if (ret) { + dev_err(dev, "Failed to enable regulators\n"); + goto disable_clk; + } + usleep_range(400, 600); return 0; +disable_clk: + clk_disable_unprepare(ov9282->inclk); error_reset: gpiod_set_value_cansleep(ov9282->reset_gpio, 0); @@ -903,6 +922,8 @@ static int ov9282_power_off(struct device *dev) struct v4l2_subdev *sd = dev_get_drvdata(dev); struct ov9282 *ov9282 = to_ov9282(sd); + regulator_bulk_disable(ARRAY_SIZE(ov9282->supplies), ov9282->supplies); + gpiod_set_value_cansleep(ov9282->reset_gpio, 0); clk_disable_unprepare(ov9282->inclk); @@ -995,6 +1016,18 @@ static int ov9282_init_controls(struct ov9282 *ov9282) return 0; } +static int ov9282_get_regulators(struct ov9282 *ov9282) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(ov9282->supplies); i++) + ov9282->supplies[i].supply = ov9282_supply_names[i]; + + return devm_regulator_bulk_get(ov9282->dev, + ARRAY_SIZE(ov9282->supplies), + ov9282->supplies); +} + /** * ov9282_probe() - I2C client device binding * @client: pointer to i2c client device @@ -1021,6 +1054,12 @@ static int ov9282_probe(struct i2c_client *client) return ret; } + ret = ov9282_get_regulators(ov9282); + if (ret) { + dev_err(&client->dev, "Failed to get power regulators\n"); + return ret; + } + mutex_init(&ov9282->mutex); ret = ov9282_power_on(ov9282->dev);