linux-kernel - [PATCH v1] media: i2c: ov5640: Implement get_mbus

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Message-Id: <20230127151245.46732-1-marcel@ziswiler.com>
Date:   Fri, 27 Jan 2023 16:12:44 +0100
From:   Marcel Ziswiler <marcel@...wiler.com>
To:     linux-media@...r.kernel.org
Cc:     kernel@...gutronix.de, Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Francesco Dolcini <francesco.dolcini@...adex.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Aishwarya Kothari <aishwarya.kothari@...adex.com>,
        Marcel Ziswiler <marcel.ziswiler@...adex.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Steve Longerbeam <slongerbeam@...il.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v1] media: i2c: ov5640: Implement get_mbus_config

From: Aishwarya Kothari <aishwarya.kothari@...adex.com>

Implement the introduced get_mbus_config operation to report the
number of used data lanes on the MIPI CSI-2 interface.

Signed-off-by: Aishwarya Kothari <aishwarya.kothari@...adex.com>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@...adex.com>

---

 drivers/media/i2c/ov5640.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
index e0f908af581b..42d43f0d1e1c 100644
--- a/drivers/media/i2c/ov5640.c
+++ b/drivers/media/i2c/ov5640.c
@@ -3733,6 +3733,19 @@ static int ov5640_init_cfg(struct v4l2_subdev *sd,
 	return 0;
 }
 
+static int ov5640_get_mbus_config(struct v4l2_subdev *sd,
+				   unsigned int pad,
+				   struct v4l2_mbus_config *cfg)
+{
+	struct ov5640_dev *sensor = to_ov5640_dev(sd);
+
+	cfg->type = V4L2_MBUS_CSI2_DPHY;
+	cfg->bus.mipi_csi2.num_data_lanes = sensor->ep.bus.mipi_csi2.num_data_lanes;
+	cfg->bus.mipi_csi2.flags = 0;
+
+	return 0;
+}
+
 static const struct v4l2_subdev_core_ops ov5640_core_ops = {
 	.log_status = v4l2_ctrl_subdev_log_status,
 	.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
@@ -3753,6 +3766,7 @@ static const struct v4l2_subdev_pad_ops ov5640_pad_ops = {
 	.get_selection = ov5640_get_selection,
 	.enum_frame_size = ov5640_enum_frame_size,
 	.enum_frame_interval = ov5640_enum_frame_interval,
+	.get_mbus_config = ov5640_get_mbus_config,
 };
 
 static const struct v4l2_subdev_ops ov5640_subdev_ops = {
-- 
2.36.1