On 30/03/18 09:23, asadpt iqroot wrote: > Hi Hans, > > Thanks for the reply. > > In HDMI receivers, when we need to use this control. What scenario? https://www.linuxtv.org/downloads/v4l-dvb-apis-new/uapi/v4l/extended-controls.html#digital-video-control-reference "Detects whether the receiver receives power from the source (e.g. HDMI carries 5V on one of the pins)." Regards, Hans > > -Thanks. > > > On 30 March 2018 at 12:13, Hans Verkuil <hverkuil@xxxxxxxxx> wrote: >> On 30/03/18 08:16, asadpt iqroot wrote: >>> Hi All, >>> >>> In reference sensor drivers, they used the >>> V4L2_CID_DV_RX_POWER_PRESENT v4l2 ctrl. >>> It is a standard ctrl and created using v4l2_ctrl_new_std(). >>> >>> The doubts are: >>> >>> 1. Whether in our sensor driver, we need to create this Control Id or >>> not. How to take the decision on this. Since this is the standard >>> ctrl. When we need to use these standard ctrls?? >> >> No. This control is for HDMI receivers, not for sensors. >> >> Regards, >> >> Hans >> >>> >>> 2. In Sensor driver, the ctrls creation is anything depends on the >>> bridge driver. >>> Based on bridge driver, whether we need to create any ctrls in Sensor driver. >>> >>> This question belongs to design of the sensor driver. >>> >>> >>> >>> Thanks & Regards >>> >>
