[SRU][Noble][OEM-6.17][PATCH 0/1] Backport upstream ov08x40 camera sensor updates

[You-Sheng Yang]

BugLink: https://bugs.launchpad.net/bugs/2116170

[ Impact ]

OV08X40, added in v6.2 kernel, has inverted hflip regiter written in
`ov08x40_set_ctrl_vflip`. This is fixed by v6.18-rc1 commit c7df6f339af94
("media: ov08x40: Fix the horizontal flip control").

[ Test Plan ]

1. Install patched kernel from -proposed kernel and reboot into it.

2. Find out the device name for ov08x40:
```
$ grep -nr ov08x40 /sys/class/video4linux/*/name
/sys/class/video4linux/v4l-subdev6/name:1:ov08x40 17-0010

$ sudo v4l2-ctl -l -d /dev/v4l-subdev6

User Controls

         exposure 0x00980911 (int) : min=4 max=4992 step=1 default=4992 value=2470 flags=0x00001000
  horizontal_flip 0x00980914 (bool) : default=0 value=0 flags=0x00001000
    vertical_flip 0x00980915 (bool) : default=0 value=0 flags=0x00001000
......
```

3. Set horizontal flip to 1. The original driver won't have any effect on this
step, but the patched driver should have video output flipped horizontally:
```
$ sudo v4l2-ctl -c horizontal_flip=1 -d /dev/v4l-subdev6
horizontal_flip: 0
$ sudo v4l2-ctl -C horizontal_flip -d /dev/v4l-subdev6
horizontal_flip: 1

```

4. Use camera app to examine the output. Here an Intel MIPI camera platform with
ov08x40 camera sensor is used:
```
$ sudo gst-launch-1.0 icamerasrc ! videoconvert ! autovideosink
```

[ Where problems could occur ]

No. This writes the right value intro device register only.

[ Other Info ]

While ov08x40 was added at v6.2, nominate for kernels newer than that.

Hao Yao (1):
  media: ov08x40: Fix the horizontal flip control

 drivers/media/i2c/ov08x40.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

-- 
2.51.0