I am trying to do video adjustments (hue, saturation, brightness, contrast) by using color controls available for ADV7842.
For that I do the following steps :
1. Manually setting CP SCS (address 0x68) register for CP MAP :
A control to select the mode the CP CSC operates in.
0000 - CP CSC configuration in manual mode
1111 - CP CSC configured in automatic mode
xxxx - Reserved
2. Manually enabling CP SCS register(address 0x69)
A control to manually enable the CP CSC. By default the CP CSC will be automatically enabled in the case that either a color-space conversion or video-adjustments (Hue, Saturation, Contrast, Brightness) is determined to be required due to other I2C settings. If MAN_CP_CSC_EN is set to one the CP CSC is forced into the enabled state.
0 - CP CSC will be automatically enabled if required. For example if either a color-space conversion or video-adjustments (Hue, Saturation, Contrast, Brightness) is determined to be required due to other I2C settings.
1 - Manual override to force CP-CSC to be enabled
3.Manually setting VID_ADJ_EN, Addr 44 (CP), Address 0x3E to 1 in order to enable color controls.
As a result I do not have any of the mentioned color controls enabled.
Do I miss something ? Are any additional steps required to get it work ?