From patchwork Mon Aug 3 11:39:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lad Prabhakar X-Patchwork-Id: 11697905 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 3149D913 for ; Mon, 3 Aug 2020 11:40:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1E92A2076C for ; Mon, 3 Aug 2020 11:40:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726631AbgHCLkP (ORCPT ); Mon, 3 Aug 2020 07:40:15 -0400 Received: from relmlor1.renesas.com ([210.160.252.171]:27969 "EHLO relmlie5.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726533AbgHCLj5 (ORCPT ); Mon, 3 Aug 2020 07:39:57 -0400 X-IronPort-AV: E=Sophos;i="5.75,429,1589209200"; d="scan'208";a="53742349" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 03 Aug 2020 20:39:37 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 8FBC142385FF; Mon, 3 Aug 2020 20:39:34 +0900 (JST) From: Lad Prabhakar To: Jacopo Mondi , Mauro Carvalho Chehab , Rob Herring , Hans Verkuil , Kieran Bingham , Sakari Ailus , linux-media@vger.kernel.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Biju Das , Prabhakar , linux-renesas-soc@vger.kernel.org, Lad Prabhakar Subject: [PATCH v2 2/3] media: i2c: ov772x: Add support for BT656 mode Date: Mon, 3 Aug 2020 12:39:12 +0100 Message-Id: <1596454753-13612-3-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1596454753-13612-1-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <1596454753-13612-1-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Add support to read the bus-type and enable BT656 mode if needed. The driver defaults to parallel mode if bus-type is not specified in DT. Signed-off-by: Lad Prabhakar Reviewed-by: Biju Das --- drivers/media/i2c/ov772x.c | 40 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/drivers/media/i2c/ov772x.c b/drivers/media/i2c/ov772x.c index 2cc6a678069a..2de9248e3689 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 + struct v4l2_fwnode_endpoint ep; }; /* @@ -574,6 +576,7 @@ static int ov772x_s_stream(struct v4l2_subdev *sd, int enable) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct ov772x_priv *priv = to_ov772x(sd); + unsigned int val; int ret = 0; mutex_lock(&priv->lock); @@ -581,6 +584,22 @@ static int ov772x_s_stream(struct v4l2_subdev *sd, int enable) if (priv->streaming == enable) goto done; + if (priv->ep.bus_type == V4L2_MBUS_BT656 && enable) { + ret = regmap_read(priv->regmap, COM7, &val); + if (ret) + goto done; + val |= ITU656_ON_OFF; + ret = regmap_write(priv->regmap, COM7, val); + } else if (priv->ep.bus_type == V4L2_MBUS_BT656 && !enable) { + ret = regmap_read(priv->regmap, COM7, &val); + if (ret) + goto done; + val &= ~ITU656_ON_OFF; + ret = regmap_write(priv->regmap, COM7, val); + } + if (ret) + goto done; + ret = regmap_update_bits(priv->regmap, COM2, SOFT_SLEEP_MODE, enable ? 0 : SOFT_SLEEP_MODE); if (ret) @@ -1354,6 +1373,7 @@ static const struct v4l2_subdev_ops ov772x_subdev_ops = { static int ov772x_probe(struct i2c_client *client) { + struct fwnode_handle *endpoint; struct ov772x_priv *priv; int ret; static const struct regmap_config ov772x_regmap_config = { @@ -1415,6 +1435,26 @@ static int ov772x_probe(struct i2c_client *client) goto error_clk_put; } + endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev), + NULL); + if (!endpoint) { + dev_err(&client->dev, "endpoint node not found\n"); + ret = -EINVAL; + goto error_clk_put; + } + + ret = v4l2_fwnode_endpoint_parse(endpoint, &priv->ep); + fwnode_handle_put(endpoint); + if (ret) { + dev_err(&client->dev, "Could not parse endpoint\n"); + goto error_clk_put; + } + + /* fallback to parallel mode */ + if (priv->ep.bus_type != V4L2_MBUS_PARALLEL && + priv->ep.bus_type != V4L2_MBUS_BT656) + priv->ep.bus_type = V4L2_MBUS_PARALLEL; + ret = ov772x_video_probe(priv); if (ret < 0) goto error_gpio_put;