Re: [PATCH v9 08/15] drm/bridge: add psr support for panel bridge callbacks

[Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>]

On 05/01/2023 15:11, Daniel Vetter wrote:
> On Wed, Dec 14, 2022 at 03:35:45PM +0530, Vinod Polimera wrote:
> > This change will handle the psr entry exit cases in the panel
> > bridge atomic callback functions. For example, the panel power
> > should not turn off if the panel is entering psr.
> >
> > Signed-off-by: Sankeerth Billakanti <quic_sbillaka@xxxxxxxxxxx>
> > Signed-off-by: Vinod Polimera <quic_vpolimer@xxxxxxxxxxx>
>
> I think this is all a nice integration of the sr helpers and bridge stuff
> and makes sense to me. For the 2 bridge patches and the drm core atomic
> patch:
>
> Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>

Thank you! I was looking at the patchset and wondering if anybody from 
drm core can actually review the core bits.

Could you please send all r-b letters, so that we don't loose them when 
applying the patches from patchwork?

> > ---
> >   drivers/gpu/drm/bridge/panel.c | 48 ++++++++++++++++++++++++++++++++++++++++++
> >   1 file changed, 48 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/bridge/panel.c b/drivers/gpu/drm/bridge/panel.c
> > index 3558cbf..5e77e38 100644
> > --- a/drivers/gpu/drm/bridge/panel.c
> > +++ b/drivers/gpu/drm/bridge/panel.c
> > @@ -113,6 +113,18 @@ static void panel_bridge_atomic_pre_enable(struct drm_bridge *bridge,
> >   				struct drm_bridge_state *old_bridge_state)
> >   {
> >   	struct panel_bridge *panel_bridge = drm_bridge_to_panel_bridge(bridge);
> > +	struct drm_atomic_state *atomic_state = old_bridge_state->base.state;
> > +	struct drm_encoder *encoder = bridge->encoder;
> > +	struct drm_crtc *crtc;
> > +	struct drm_crtc_state *old_crtc_state;
> > +
> > +	crtc = drm_atomic_get_new_crtc_for_encoder(atomic_state, encoder);
> > +	if (!crtc)
> > +		return;
> > +
> > +	old_crtc_state = drm_atomic_get_old_crtc_state(atomic_state, crtc);
> > +	if (old_crtc_state && old_crtc_state->self_refresh_active)
> > +		return;
> >   
> >   	drm_panel_prepare(panel_bridge->panel);
> >   }
> > @@ -121,6 +133,18 @@ static void panel_bridge_atomic_enable(struct drm_bridge *bridge,
> >   				struct drm_bridge_state *old_bridge_state)
> >   {
> >   	struct panel_bridge *panel_bridge = drm_bridge_to_panel_bridge(bridge);
> > +	struct drm_atomic_state *atomic_state = old_bridge_state->base.state;
> > +	struct drm_encoder *encoder = bridge->encoder;
> > +	struct drm_crtc *crtc;
> > +	struct drm_crtc_state *old_crtc_state;
> > +
> > +	crtc = drm_atomic_get_new_crtc_for_encoder(atomic_state, encoder);
> > +	if (!crtc)
> > +		return;
> > +
> > +	old_crtc_state = drm_atomic_get_old_crtc_state(atomic_state, crtc);
> > +	if (old_crtc_state && old_crtc_state->self_refresh_active)
> > +		return;
> >   
> >   	drm_panel_enable(panel_bridge->panel);
> >   }
> > @@ -129,6 +153,18 @@ static void panel_bridge_atomic_disable(struct drm_bridge *bridge,
> >   				struct drm_bridge_state *old_bridge_state)
> >   {
> >   	struct panel_bridge *panel_bridge = drm_bridge_to_panel_bridge(bridge);
> > +	struct drm_atomic_state *atomic_state = old_bridge_state->base.state;
> > +	struct drm_encoder *encoder = bridge->encoder;
> > +	struct drm_crtc *crtc;
> > +	struct drm_crtc_state *new_crtc_state;
> > +
> > +	crtc = drm_atomic_get_old_crtc_for_encoder(atomic_state, encoder);
> > +	if (!crtc)
> > +		return;
> > +
> > +	new_crtc_state = drm_atomic_get_new_crtc_state(atomic_state, crtc);
> > +	if (new_crtc_state && new_crtc_state->self_refresh_active)
> > +		return;
> >   
> >   	drm_panel_disable(panel_bridge->panel);
> >   }
> > @@ -137,6 +173,18 @@ static void panel_bridge_atomic_post_disable(struct drm_bridge *bridge,
> >   				struct drm_bridge_state *old_bridge_state)
> >   {
> >   	struct panel_bridge *panel_bridge = drm_bridge_to_panel_bridge(bridge);
> > +	struct drm_atomic_state *atomic_state = old_bridge_state->base.state;
> > +	struct drm_encoder *encoder = bridge->encoder;
> > +	struct drm_crtc *crtc;
> > +	struct drm_crtc_state *new_crtc_state;
> > +
> > +	crtc = drm_atomic_get_old_crtc_for_encoder(atomic_state, encoder);
> > +	if (!crtc)
> > +		return;
> > +
> > +	new_crtc_state = drm_atomic_get_new_crtc_state(atomic_state, crtc);
> > +	if (new_crtc_state && new_crtc_state->self_refresh_active)
> > +		return;
> >   
> >   	drm_panel_unprepare(panel_bridge->panel);
> >   }
> > --
> > 2.7.4

--
With best wishes
Dmitry