The subject line is missing the driver name. On Thu, Sep 21, 2023 at 03:09:10PM +0300, Jani Nikula wrote: > On Thu, 21 Sep 2023, Xin Ji <xji@xxxxxxxxxxxxxxxx> wrote: > > For the none-interrupt design(sink device is panel, polling HPD s/none-interrupt/no-interrupt/ ? s/design/design / > > status when chip power on), anx7625 FW has more than 200ms HPD > > de-bounce time in FW, for the safety to get HPD status, driver > > better to wait 200ms before HPD detection after OS resume back. > > > > Signed-off-by: Xin Ji <xji@xxxxxxxxxxxxxxxx> > > --- > > drivers/gpu/drm/bridge/analogix/anx7625.c | 3 +++ > > 1 file changed, 3 insertions(+) > > > > diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c > > index 51abe42c639e..833d6d50a03d 100644 > > --- a/drivers/gpu/drm/bridge/analogix/anx7625.c > > +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c > > @@ -1464,6 +1464,9 @@ static int _anx7625_hpd_polling(struct anx7625_data *ctx, > > if (ctx->pdata.intp_irq) > > return 0; > > > > + /* Delay 200ms for FW HPD de-bounce */ > > + usleep_range(200000, 201000); > > If you need to sleep for 200 ms, maybe use msleep instead? fsleep() could be a nice replacement. > > + > > ret = readx_poll_timeout(anx7625_read_hpd_status_p0, > > ctx, val, > > ((val & HPD_STATUS) || (val < 0)), -- Regards, Laurent Pinchart
