From patchwork Sun Sep 13 18:42:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prabhakar X-Patchwork-Id: 11772427 X-Patchwork-Delegate: kieran@bingham.xyz Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 736C86CA for ; Sun, 13 Sep 2020 18:43:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 65C172168B for ; Sun, 13 Sep 2020 18:43:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725974AbgIMSm7 (ORCPT ); Sun, 13 Sep 2020 14:42:59 -0400 Received: from relmlor1.renesas.com ([210.160.252.171]:17654 "EHLO relmlie5.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725969AbgIMSm5 (ORCPT ); Sun, 13 Sep 2020 14:42:57 -0400 X-IronPort-AV: E=Sophos;i="5.76,423,1592838000"; d="scan'208";a="57142465" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie5.idc.renesas.com with ESMTP; 14 Sep 2020 03:42:55 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id DE6E940078B7; Mon, 14 Sep 2020 03:42:53 +0900 (JST) From: Lad Prabhakar To: Jacopo Mondi , Sakari Ailus , Laurent Pinchart , Mauro Carvalho Chehab Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Biju Das , Lad Prabhakar , Prabhakar Subject: [PATCH v4 1/3] media: i2c: ov772x: Parse endpoint properties Date: Sun, 13 Sep 2020 19:42:45 +0100 Message-Id: <20200913184247.618-2-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200913184247.618-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20200913184247.618-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org Parse endpoint properties using v4l2_fwnode_endpoint_alloc_parse() to determine bus-type and store it locally in priv data. Also for backward compatibility with the existing DT where bus-type isnt specified fallback to V4L2_MBUS_PARALLEL. Signed-off-by: Lad Prabhakar --- drivers/media/i2c/ov772x.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/media/i2c/ov772x.c b/drivers/media/i2c/ov772x.c index 2cc6a678069a..551082aa7026 100644 --- a/drivers/media/i2c/ov772x.c +++ b/drivers/media/i2c/ov772x.c @@ -31,6 +31,7 @@ #include #include #include +#include #include #include @@ -434,6 +435,7 @@ struct ov772x_priv { #ifdef CONFIG_MEDIA_CONTROLLER struct media_pad pad; #endif + enum v4l2_mbus_type bus_type; }; /* @@ -1354,6 +1356,8 @@ static const struct v4l2_subdev_ops ov772x_subdev_ops = { static int ov772x_probe(struct i2c_client *client) { + struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 }; + struct fwnode_handle *ep; struct ov772x_priv *priv; int ret; static const struct regmap_config ov772x_regmap_config = { @@ -1415,6 +1419,26 @@ static int ov772x_probe(struct i2c_client *client) goto error_clk_put; } + ep = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev), + NULL); + if (!ep) { + dev_err(&client->dev, "endpoint node not found\n"); + ret = -EINVAL; + goto error_clk_put; + } + + bus_cfg.bus_type = V4L2_MBUS_PARALLEL; + ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); + priv->bus_type = bus_cfg.bus_type; + v4l2_fwnode_endpoint_free(&bus_cfg); + if (ret) { + /* For backward compatibility with the existing DT where + * bus-type isnt specified fallback to V4L2_MBUS_PARALLEL + */ + priv->bus_type = V4L2_MBUS_PARALLEL; + dev_notice(&client->dev, "Falling back to V4L2_MBUS_PARALLEL mode\n"); + } + ret = ov772x_video_probe(priv); if (ret < 0) goto error_gpio_put;