On Tue, Nov 16, 2021 at 6:07 PM Peter Collingbourne <pcc@xxxxxxxxxx> wrote: > > It has been observed that with certain monitors such as the HP Z27n, > the register 0x825e reads a value of 0x79 when the HDMI cable is > connected and 0x78 when it is disconnected, i.e. bit 0 appears > to correspond to the HDMI connection status and bit 2 is never > set. Therefore, change the driver to check bit 0 instead of bit 2. > > Signed-off-by: Peter Collingbourne <pcc@xxxxxxxxxx> > Link: https://linux-review.googlesource.com/id/I7e76411127e1ce4988a3f6d0c8ba5f1c3d880c23 > --- > N.B. I don't currently have easy access to a monitor that works > with the existing driver, so it would be great if people with > monitors that currently work could test this patch to make sure > that it doesn't introduce any regressions. Otherwise I will change > it to check both bits. So very interesting! I gave this a spin with my monitors and it works fine. Vinod: Can you check the datasheet to see if the wrong bit is being used here? thanks -john
