From patchwork Fri Nov 20 16:15:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 11921225 X-Patchwork-Delegate: kieran@bingham.xyz 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 65F9BC56201 for ; Fri, 20 Nov 2020 16:16:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2D0B72240B for ; Fri, 20 Nov 2020 16:16:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728710AbgKTQPm (ORCPT ); Fri, 20 Nov 2020 11:15:42 -0500 Received: from relay2-d.mail.gandi.net ([217.70.183.194]:63361 "EHLO relay2-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728254AbgKTQPl (ORCPT ); Fri, 20 Nov 2020 11:15:41 -0500 X-Originating-IP: 93.34.118.233 Received: from uno.lan (93-34-118-233.ip49.fastwebnet.it [93.34.118.233]) (Authenticated sender: jacopo@jmondi.org) by relay2-d.mail.gandi.net (Postfix) with ESMTPSA id 690A640044; Fri, 20 Nov 2020 16:15:38 +0000 (UTC) From: Jacopo Mondi To: kieran.bingham+renesas@ideasonboard.com, laurent.pinchart+renesas@ideasonboard.com, niklas.soderlund+renesas@ragnatech.se, geert@linux-m68k.org Cc: Jacopo Mondi , linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] media: rdacm20: Enable GPIO1 explicitly Date: Fri, 20 Nov 2020 17:15:29 +0100 Message-Id: <20201120161529.236447-3-jacopo+renesas@jmondi.org> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201120161529.236447-1-jacopo+renesas@jmondi.org> References: <20201120161529.236447-1-jacopo+renesas@jmondi.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org The MAX9271 GPIO1 line that controls the sensor reset is by default enabled after a serializer chip reset. As rdacm20 does not go through an explicit serializer reset, make sure GPIO1 is enabled to make the camera module driver more robust. Fixes: 34009bffc1c6 ("media: i2c: Add RDACM20 driver") Signed-off-by: Jacopo Mondi Reviewed-by: Kieran Bingham --- drivers/media/i2c/rdacm20.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) -- 2.29.1 diff --git a/drivers/media/i2c/rdacm20.c b/drivers/media/i2c/rdacm20.c index 1ed928c4ca70..16bcb764b0e0 100644 --- a/drivers/media/i2c/rdacm20.c +++ b/drivers/media/i2c/rdacm20.c @@ -487,9 +487,18 @@ static int rdacm20_initialize(struct rdacm20_device *dev) * Reset the sensor by cycling the OV10635 reset signal connected to the * MAX9271 GPIO1 and verify communication with the OV10635. */ - max9271_clear_gpios(dev->serializer, MAX9271_GPIO1OUT); + ret = max9271_enable_gpios(dev->serializer, MAX9271_GPIO1OUT); + if (ret) + return ret; + + ret = max9271_clear_gpios(dev->serializer, MAX9271_GPIO1OUT); + if (ret) + return ret; usleep_range(10000, 15000); - max9271_set_gpios(dev->serializer, MAX9271_GPIO1OUT); + + ret = max9271_set_gpios(dev->serializer, MAX9271_GPIO1OUT); + if (ret) + return ret; usleep_range(10000, 15000); again: