[Intel-gfx] [PATCH 2/2] drm/amdgpu: Use per-device driver_features to disable atomic

[Ville Syrjälä]

On Thu, Sep 13, 2018 at 12:40:20PM -0400, Alex Deucher wrote:
> On Thu, Sep 13, 2018 at 12:39 PM Michel Dänzer <michel at daenzer.net> wrote:
> >
> > On 2018-09-13 6:31 p.m., Ville Syrjala wrote:
> > > From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> > >
> > > Disable atomic on a per-device basis instead of for all devices.
> > > Made possible by the new device.driver_features thing.
> > >
> > > Cc: Alex Deucher <alexander.deucher at amd.com>
> > > Cc: "Christian König" <christian.koenig at amd.com>
> > > Cc: "David (ChunMing) Zhou" <David1.Zhou at amd.com>
> > > Cc: Harry Wentland <harry.wentland at amd.com>
> > > Cc: Michel Dänzer <michel at daenzer.net>
> > > Suggested-by: Michel Dänzer <michel at daenzer.net>
> > > Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
> > > ---
> > >  drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 12 ++++--------
> > >  1 file changed, 4 insertions(+), 8 deletions(-)
> > >
> > > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> > > index 6870909da926..8c1db96be070 100644
> > > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> > > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> > > @@ -816,17 +816,13 @@ static int amdgpu_pci_probe(struct pci_dev *pdev,
> > >       if (ret)
> > >               return ret;
> > >
> > > -     /* warn the user if they mix atomic and non-atomic capable GPUs */
> > > -     if ((kms_driver.driver_features & DRIVER_ATOMIC) && !supports_atomic)
> > > -             DRM_ERROR("Mixing atomic and non-atomic capable GPUs!\n");
> > > -     /* support atomic early so the atomic debugfs stuff gets created */
> > > -     if (supports_atomic)
> > > -             kms_driver.driver_features |= DRIVER_ATOMIC;
> > > -
> > >       dev = drm_dev_alloc(&kms_driver, &pdev->dev);
> > >       if (IS_ERR(dev))
> > >               return PTR_ERR(dev);
> > >
> > > +     if (!supports_atomic)
> > > +             dev->driver_features &= ~DRIVER_ATOMIC;
> > > +
> > >       ret = pci_enable_device(pdev);
> > >       if (ret)
> > >               goto err_free;
> > > @@ -1078,7 +1074,7 @@ amdgpu_get_crtc_scanout_position(struct drm_device *dev, unsigned int pipe,
> > >
> > >  static struct drm_driver kms_driver = {
> > >       .driver_features =
> > > -         DRIVER_USE_AGP |
> > > +         DRIVER_USE_AGP | DRIVER_ATOMIC |
> > >           DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM |
> > >           DRIVER_PRIME | DRIVER_RENDER | DRIVER_MODESET | DRIVER_SYNCOBJ,
> > >       .load = amdgpu_driver_load_kms,
> > >
> >
> > Thanks Ville for taking care of this!
> >
> > Reviewed-by: Michel Dänzer <michel.daenzer at amd.com>
> >
> > If Alex agrees, probably best to push this to drm-misc-next as well.
> >
> 
> Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
> 
> Please go ahead and merge through drm-misc.
> 
> Thanks!

You are welcome, and thanks for the r-bs. Pushed.

-- 
Ville Syrjälä
Intel