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media: imx258: Check the rotation property has a value of 180

The driver only supports streaming images flipped horizontally and
vertically. In order to ensure that all current users will be fine if or
when support for upright streaming is added, require the presence of the
"rotation" control now.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: "Lai, Jim" <jim.lai@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Sakari Ailus 2018-05-23 05:33:32 -04:00 committed by Mauro Carvalho Chehab
parent 7daf201d7f
commit 17121d12a5

View File

@ -1221,6 +1221,14 @@ static int imx258_probe(struct i2c_client *client)
if (val != 19200000)
return -EINVAL;
/*
* Check that the device is mounted upside down. The driver only
* supports a single pixel order right now.
*/
ret = device_property_read_u32(&client->dev, "rotation", &val);
if (ret || val != 180)
return -EINVAL;
imx258 = devm_kzalloc(&client->dev, sizeof(*imx258), GFP_KERNEL);
if (!imx258)
return -ENOMEM;