Hi Sakari, One more question below: On 08/25/2016 10:18 AM, Sakari Ailus wrote: >>>> + >>>> +static struct v4l2_subdev_core_ops ov5645_core_ops = { >>>> + .s_power = ov5645_s_power, >>>> +}; >>>> + >>>> +static struct v4l2_subdev_video_ops ov5645_video_ops = { >>>> + .s_stream = ov5645_s_stream, >>>> +}; >>>> + >>>> +static struct v4l2_subdev_pad_ops ov5645_subdev_pad_ops = { >>>> + .enum_mbus_code = ov5645_enum_mbus_code, >>>> + .enum_frame_size = ov5645_enum_frame_size, >>>> + .get_fmt = ov5645_get_format, >>>> + .set_fmt = ov5645_set_format, >>>> + .get_selection = ov5645_get_selection, >>> >>> Could you add init_cfg() pad op to initialise the try format and selections? >> >> Yes, I'll do that. If I follow the code correctly this init_cfg() is called whenever the device is opened, right? This means that the format will be reset to default values every time the userspace opens the device. So I wonder if this is what we really want, or do we want to keep the last set format instead. For example if we use media-ctl only to get the current format, this is already enough - it opens the subdev node and resets the format to default. -- Best regards, Todor Tomov -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html