linux-kernel - [PATCH v6 7/7] media: imx214: Add new control with V4L2_CID_UNIT_CELL

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Message-Id: <20190920135137.10052-8-ricardo@ribalda.com>
Date:   Fri, 20 Sep 2019 15:51:37 +0200
From:   Ricardo Ribalda Delgado <ricardo@...alda.com>
To:     Philipp Zabel <p.zabel@...gutronix.de>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Jacopo Mondi <jacopo@...ndi.org>, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Ricardo Ribalda Delgado <ribalda@...nel.org>
Subject: [PATCH v6 7/7] media: imx214: Add new control with V4L2_CID_UNIT_CELL_SIZE

From: Ricardo Ribalda Delgado <ribalda@...nel.org>

According to the product brief, the unit cell size is 1120 nanometers^2.

https://www.sony-semicon.co.jp/products_en/IS/sensor1/img/products/ProductBrief_IMX214_20150428.pdf

Signed-off-by: Ricardo Ribalda Delgado <ribalda@...nel.org>
---
 drivers/media/i2c/imx214.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/media/i2c/imx214.c b/drivers/media/i2c/imx214.c
index 159a3a604f0e..57562e20c4ca 100644
--- a/drivers/media/i2c/imx214.c
+++ b/drivers/media/i2c/imx214.c
@@ -47,6 +47,7 @@ struct imx214 {
 	struct v4l2_ctrl *pixel_rate;
 	struct v4l2_ctrl *link_freq;
 	struct v4l2_ctrl *exposure;
+	struct v4l2_ctrl *unit_size;
 
 	struct regulator_bulk_data	supplies[IMX214_NUM_SUPPLIES];
 
@@ -948,6 +949,13 @@ static int imx214_probe(struct i2c_client *client)
 	static const s64 link_freq[] = {
 		IMX214_DEFAULT_LINK_FREQ,
 	};
+	struct v4l2_area unit_size = {
+		.width = 1120,
+		.height = 1120,
+	};
+	union v4l2_ctrl_ptr p_def = {
+		.p_area = &unit_size,
+	};
 	int ret;
 
 	ret = imx214_parse_fwnode(dev);
@@ -1029,6 +1037,10 @@ static int imx214_probe(struct i2c_client *client)
 					     V4L2_CID_EXPOSURE,
 					     0, 3184, 1, 0x0c70);
 
+	imx214->unit_size = v4l2_ctrl_new_std_compound(&imx214->ctrls,
+						       NULL,
+						       V4L2_CID_UNIT_CELL_SIZE,
+						       p_def);
 	ret = imx214->ctrls.error;
 	if (ret) {
 		dev_err(&client->dev, "%s control init failed (%d)\n",
-- 
2.23.0