On Tue, Feb 11, 2025 at 03:33:58PM +0100, Maxime Ripard wrote:
> On Sun, Feb 09, 2025 at 09:13:36AM +0200, Dmitry Baryshkov wrote:
> > On Tue, Feb 04, 2025 at 03:58:02PM +0100, Maxime Ripard wrote:
> > > The tc358768 driver follows the drm_encoder->crtc pointer that is
> > > deprecated and shouldn't be used by atomic drivers.
> > >
> > > This was due to the fact that we did't have any other alternative to
> > > retrieve the CRTC pointer. Fortunately, the crtc pointer is now provided
> > > in the bridge state, so we can move to atomic callbacks and drop that
> > > deprecated pointer usage.
> > >
> > > Signed-off-by: Maxime Ripard <mripard@xxxxxxxxxx>
> > > ---
> > > drivers/gpu/drm/bridge/tc358768.c | 30 +++++++++++++++++++++++-------
> > > 1 file changed, 23 insertions(+), 7 deletions(-)
> > >
> > > diff --git a/drivers/gpu/drm/bridge/tc358768.c b/drivers/gpu/drm/bridge/tc358768.c
> > > index 6db18d1e8824dd7d387211d6d1e668645cf88bbe..6ff6b29e8075d7c6fa0b74b4fec83c5230512d96 100644
> > > --- a/drivers/gpu/drm/bridge/tc358768.c
> > > +++ b/drivers/gpu/drm/bridge/tc358768.c
> > > @@ -601,17 +601,29 @@ static void tc358768_bridge_disable(struct drm_bridge *bridge)
> > > ret = tc358768_clear_error(priv);
> > > if (ret)
> > > dev_warn(priv->dev, "Software disable failed: %d\n", ret);
> > > }
> > >
> > > +static void tc358768_bridge_atomic_disable(struct drm_bridge *bridge,
> > > + struct drm_atomic_state *state)
> > > +{
> > > + tc358768_bridge_disable(bridge);
> > > +}
> > > +
> >
> > Please change corresponding functions into atomic_disable() and
> > atomic_post_disable(). Calling sites have access to the atomic state, so
> > there is no need to have yet another wrapper.
>
> It's pretty hard to do (at least without the hardware), both
> tc358768_bridge_disable() and tc358768_bridge_post_disable() have
> multiple call sites in the driver, and passing a state enabling the
> bridge doesn't make sense for those.
I think it makes sense. The function knows that the bridge needs to be
disabled. The state is totally unused (or it can be used to get
connectors / CRTC / etc).
>
> I guess I can still drop that patch.
>
> Maxime
--
With best wishes
Dmitry
