On Fri, 29 Nov 2024 at 09:59, Xiangxu Yin <quic_xiangxuy@xxxxxxxxxxx> wrote: > > Add support for handling HPD (Hot Plug Detect) signals via external > GPIOs connected through pinctrl chips (e.g., Semtech SX1509Q). This > involves reinitializing the relevant GPIO and binding an interrupt > handler to process hot plug events. Since external GPIOs only support > edge interrupts (rising or falling) rather than state interrupts, the > GPIO state must be read during the first DP bridge HPD enablement. This > ensures the current connection state is determined and a hot plug event > is reported accordingly. NAK, use dp-connector instead. > > Signed-off-by: Xiangxu Yin <quic_xiangxuy@xxxxxxxxxxx> > --- > drivers/gpu/drm/msm/dp/dp_display.c | 83 +++++++++++++++++++++++++++++++++++++ > 1 file changed, 83 insertions(+) -- With best wishes Dmitry
