From patchwork Mon Aug 17 14:35:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 256138 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=-12.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, 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 E990BC433E1 for ; Mon, 17 Aug 2020 14:32:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B171E20748 for ; Mon, 17 Aug 2020 14:32:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729051AbgHQOcM (ORCPT ); Mon, 17 Aug 2020 10:32:12 -0400 Received: from relay6-d.mail.gandi.net ([217.70.183.198]:58411 "EHLO relay6-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729049AbgHQOcM (ORCPT ); Mon, 17 Aug 2020 10:32:12 -0400 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 relay6-d.mail.gandi.net (Postfix) with ESMTPSA id 6C83EC0006; Mon, 17 Aug 2020 14:32:08 +0000 (UTC) From: Jacopo Mondi To: linux-renesas-soc@vger.kernel.org, linux-media@vger.kernel.org, Mauro Carvalho Chehab Cc: Jacopo Mondi , Kieran Bingham , Laurent Pinchart , =?utf-8?q?Niklas_S=C3=B6derlund?= , sakari.ailus@iki.fi, hverkuil@xs4all.nl, hyunk@xilinx.com, manivannan.sadhasivam@linaro.org Subject: [PATCH 2/4] media: i2c: max9286: Get format from remote ends Date: Mon, 17 Aug 2020 16:35:38 +0200 Message-Id: <20200817143540.247340-3-jacopo+renesas@jmondi.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200817143540.247340-1-jacopo+renesas@jmondi.org> References: <20200817143540.247340-1-jacopo+renesas@jmondi.org> MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The MAX9286 chip does not allow any modification to the image stream format it de-serializes from the GMSL bus to its MIPI CSI-2 output interface. For this reason, when the format is queried from on any of the MAX9286 pads, get the remote subdevice format and return it. Signed-off-by: Jacopo Mondi --- drivers/media/i2c/max9286.c | 26 +++++++++++++++++++++----- 1 file changed, 21 insertions(+), 5 deletions(-) diff --git a/drivers/media/i2c/max9286.c b/drivers/media/i2c/max9286.c index 7c292f2e2704..e6a70dbd27df 100644 --- a/drivers/media/i2c/max9286.c +++ b/drivers/media/i2c/max9286.c @@ -742,8 +742,10 @@ static int max9286_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_format *format) { struct max9286_priv *priv = sd_to_max9286(sd); - struct v4l2_mbus_framefmt *cfg_fmt; + struct v4l2_subdev_format remote_fmt = {}; + struct device *dev = &priv->client->dev; unsigned int pad = format->pad; + int ret; /* * Multiplexed Stream Support: Support link validation by returning the @@ -754,12 +756,26 @@ static int max9286_get_fmt(struct v4l2_subdev *sd, if (pad == MAX9286_SRC_PAD) pad = __ffs(priv->bound_sources); - cfg_fmt = max9286_get_pad_format(priv, cfg, pad, format->which); - if (!cfg_fmt) - return -EINVAL; + if (format->which == V4L2_SUBDEV_FORMAT_TRY) { + mutex_lock(&priv->mutex); + format->format = *v4l2_subdev_get_try_format(&priv->sd, + cfg, pad); + mutex_unlock(&priv->mutex); + + return 0; + } + + remote_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; + remote_fmt.pad = 0; + ret = v4l2_subdev_call(priv->sources[pad].sd, pad, get_fmt, NULL, + &remote_fmt); + if (ret) { + dev_err(dev, "Unable get format on source %d\n", pad); + return ret; + } mutex_lock(&priv->mutex); - format->format = *cfg_fmt; + format->format = remote_fmt.format; mutex_unlock(&priv->mutex); return 0;