950-0249-media-i2c-imx290-set-the-format-before-VIDIOC_SUBDEV.patch

From e2d1526bc0029a25dc1aac46f63630cd876a978b Mon Sep 17 00:00:00 2001
From: Andrey Konovalov <andrey.konovalov@linaro.org>
Date: Fri, 12 Jun 2020 15:53:46 +0200
Subject: [PATCH] media: i2c: imx290: set the format before
 VIDIOC_SUBDEV_G_FMT is called

Commit d46cfdc86c30d5ec768924f0b1e2683c8d20b671 upstream.

With the current driver 'media-ctl -p' issued right after the imx290 driver
is loaded prints:
pad0: Source
             [fmt:unknown/0x0]

The format value of zero is due to the current_format field of the imx290
struct not being initialized yet.

As imx290_entity_init_cfg() calls imx290_set_fmt(), the current_mode field
is also initialized, so the line which set current_mode to a default value
in driver's probe() function is no longer needed.

Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 drivers/media/i2c/imx290.c | 3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/media/i2c/imx290.c
+++ b/drivers/media/i2c/imx290.c
@@ -1087,6 +1087,9 @@ static int imx290_probe(struct i2c_clien
 		goto free_ctrl;
 	}
 
+	/* Initialize the frame format (this also sets imx290->current_mode) */
+	imx290_entity_init_cfg(&imx290->sd, NULL);
+
 	ret = v4l2_async_register_subdev(&imx290->sd);
 	if (ret < 0) {
 		dev_err(dev, "Could not register v4l2 device\n");