[PATCH] drm/radeon/aux: fix hpd assignment for aux bus

[Deucher, Alexander]

> -----Original Message-----
> From: Christian König [mailto:deathsimple at vodafone.de]
> Sent: Tuesday, April 22, 2014 5:17 AM
> To: Alex Deucher; dri-devel at lists.freedesktop.org
> Cc: Deucher, Alexander
> Subject: Re: [PATCH] drm/radeon/aux: fix hpd assignment for aux bus
> 
> Am 22.04.2014 08:02, schrieb Alex Deucher:
> > The hpd (hot plug detect) pin assignment got lost
> > in the conversion to to the common i2c over aux
> > code.  Without this information, aux transactions
> > do not work properly.  Fixes DP failures.
> >
> > Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
> 
> Added to my 3.15 queue.
> 
> Does this also fix the issue Ed Tomlinson <edt at aei.ca> reported about?

It should fix the issue Ed and Ken reported and bug:
https://bugs.freedesktop.org/show_bug.cgi?id=77751

Alex

> 
> Christian.
> 
> > ---
> >   drivers/gpu/drm/radeon/atombios_dp.c | 1 +
> >   1 file changed, 1 insertion(+)
> >
> > diff --git a/drivers/gpu/drm/radeon/atombios_dp.c
> b/drivers/gpu/drm/radeon/atombios_dp.c
> > index 1593652..bc0119f 100644
> > --- a/drivers/gpu/drm/radeon/atombios_dp.c
> > +++ b/drivers/gpu/drm/radeon/atombios_dp.c
> > @@ -209,6 +209,7 @@ void radeon_dp_aux_init(struct radeon_connector
> *radeon_connector)
> >   {
> >   	int ret;
> >
> > +	radeon_connector->ddc_bus->rec.hpd = radeon_connector-
> >hpd.hpd;
> >   	radeon_connector->ddc_bus->aux.dev = radeon_connector-
> >base.kdev;
> >   	radeon_connector->ddc_bus->aux.transfer =
> radeon_dp_aux_transfer;
> >   	ret = drm_dp_aux_register_i2c_bus(&radeon_connector->ddc_bus-
> >aux);