diff mbox series

[v2,1/4] drm/bridge: ti-sn65dsi86: Implement bridge connector operations

Message ID 20220307175955.363057-2-kieran.bingham+renesas@ideasonboard.com (mailing list archive)
State Superseded
Delegated to: Kieran Bingham
Headers show
Series drm/bridge: ti-sn65dsi86: Support non-eDP DisplayPort connectors | expand

Commit Message

Kieran Bingham March 7, 2022, 5:59 p.m. UTC 
From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

Implement the bridge connector-related .get_edid() operation, and report
the related bridge capabilities and type.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
---
Changes since v1:

- The connector .get_modes() operation doesn't rely on EDID anymore,
  __ti_sn_bridge_get_edid() and ti_sn_bridge_get_edid() got merged
  together

Notes from Kieran:

RB Tags collected from:
 https://lore.kernel.org/all/20210322030128.2283-9-laurent.pinchart+renesas@ideasonboard.com/

However this was over a year ago, so let me know if other patches now
superceed this one or otherwise invalidate this update.

 drivers/gpu/drm/bridge/ti-sn65dsi86.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

Comments

Doug Anderson March 7, 2022, 7:52 p.m. UTC | #1 
Hi,

On Mon, Mar 7, 2022 at 10:00 AM Kieran Bingham
<kieran.bingham+renesas@ideasonboard.com> wrote:
>
> From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
>
> Implement the bridge connector-related .get_edid() operation, and report
> the related bridge capabilities and type.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> Reviewed-by: Stephen Boyd <swboyd@chromium.org>
> Reviewed-by: Douglas Anderson <dianders@chromium.org>
> Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
> ---
> Changes since v1:
>
> - The connector .get_modes() operation doesn't rely on EDID anymore,
>   __ti_sn_bridge_get_edid() and ti_sn_bridge_get_edid() got merged
>   together
>
> Notes from Kieran:
>
> RB Tags collected from:
>  https://lore.kernel.org/all/20210322030128.2283-9-laurent.pinchart+renesas@ideasonboard.com/
>
> However this was over a year ago, so let me know if other patches now
> superceed this one or otherwise invalidate this update.
>
>  drivers/gpu/drm/bridge/ti-sn65dsi86.c | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
>
> diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> index c55848588123..ffb6c04f6c46 100644
> --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> @@ -1154,6 +1154,19 @@ static void ti_sn_bridge_post_disable(struct drm_bridge *bridge)
>         pm_runtime_put_sync(pdata->dev);
>  }
>
> +static struct edid *ti_sn_bridge_get_edid(struct drm_bridge *bridge,
> +                                         struct drm_connector *connector)
> +{
> +       struct ti_sn65dsi86 *pdata = bridge_to_ti_sn65dsi86(bridge);
> +       struct edid *edid;
> +
> +       pm_runtime_get_sync(pdata->dev);
> +       edid = drm_get_edid(connector, &pdata->aux.ddc);
> +       pm_runtime_put_autosuspend(pdata->dev);
> +
> +       return edid;
> +}
> +
>  static const struct drm_bridge_funcs ti_sn_bridge_funcs = {
>         .attach = ti_sn_bridge_attach,
>         .detach = ti_sn_bridge_detach,
> @@ -1162,6 +1175,7 @@ static const struct drm_bridge_funcs ti_sn_bridge_funcs = {
>         .enable = ti_sn_bridge_enable,
>         .disable = ti_sn_bridge_disable,
>         .post_disable = ti_sn_bridge_post_disable,
> +       .get_edid = ti_sn_bridge_get_edid,
>  };
>
>  static void ti_sn_bridge_parse_lanes(struct ti_sn65dsi86 *pdata,
> @@ -1248,6 +1262,8 @@ static int ti_sn_bridge_probe(struct auxiliary_device *adev,
>
>         pdata->bridge.funcs = &ti_sn_bridge_funcs;
>         pdata->bridge.of_node = np;
> +       pdata->bridge.ops = DRM_BRIDGE_OP_EDID;
> +       pdata->bridge.type = DRM_MODE_CONNECTOR_eDP;

This doesn't look right to me. In the eDP case the EDID reading is
driven by the panel.

-Doug
Kieran Bingham March 10, 2022, 11:43 a.m. UTC | #2 
Hi Doug,

Quoting Doug Anderson (2022-03-07 19:52:08)
> Hi,
> 
> On Mon, Mar 7, 2022 at 10:00 AM Kieran Bingham
> <kieran.bingham+renesas@ideasonboard.com> wrote:
> >
> > From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> >
> > Implement the bridge connector-related .get_edid() operation, and report
> > the related bridge capabilities and type.
> >
> > Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> > Reviewed-by: Stephen Boyd <swboyd@chromium.org>
> > Reviewed-by: Douglas Anderson <dianders@chromium.org>
> > Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
> > ---
> > Changes since v1:
> >
> > - The connector .get_modes() operation doesn't rely on EDID anymore,
> >   __ti_sn_bridge_get_edid() and ti_sn_bridge_get_edid() got merged
> >   together
> >
> > Notes from Kieran:
> >
> > RB Tags collected from:
> >  https://lore.kernel.org/all/20210322030128.2283-9-laurent.pinchart+renesas@ideasonboard.com/
> >
> > However this was over a year ago, so let me know if other patches now
> > superceed this one or otherwise invalidate this update.
> >
> >  drivers/gpu/drm/bridge/ti-sn65dsi86.c | 16 ++++++++++++++++
> >  1 file changed, 16 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> > index c55848588123..ffb6c04f6c46 100644
> > --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> > +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> > @@ -1154,6 +1154,19 @@ static void ti_sn_bridge_post_disable(struct drm_bridge *bridge)
> >         pm_runtime_put_sync(pdata->dev);
> >  }
> >
> > +static struct edid *ti_sn_bridge_get_edid(struct drm_bridge *bridge,
> > +                                         struct drm_connector *connector)
> > +{
> > +       struct ti_sn65dsi86 *pdata = bridge_to_ti_sn65dsi86(bridge);
> > +       struct edid *edid;
> > +
> > +       pm_runtime_get_sync(pdata->dev);
> > +       edid = drm_get_edid(connector, &pdata->aux.ddc);
> > +       pm_runtime_put_autosuspend(pdata->dev);
> > +
> > +       return edid;
> > +}
> > +
> >  static const struct drm_bridge_funcs ti_sn_bridge_funcs = {
> >         .attach = ti_sn_bridge_attach,
> >         .detach = ti_sn_bridge_detach,
> > @@ -1162,6 +1175,7 @@ static const struct drm_bridge_funcs ti_sn_bridge_funcs = {
> >         .enable = ti_sn_bridge_enable,
> >         .disable = ti_sn_bridge_disable,
> >         .post_disable = ti_sn_bridge_post_disable,
> > +       .get_edid = ti_sn_bridge_get_edid,
> >  };
> >
> >  static void ti_sn_bridge_parse_lanes(struct ti_sn65dsi86 *pdata,
> > @@ -1248,6 +1262,8 @@ static int ti_sn_bridge_probe(struct auxiliary_device *adev,
> >
> >         pdata->bridge.funcs = &ti_sn_bridge_funcs;
> >         pdata->bridge.of_node = np;
> > +       pdata->bridge.ops = DRM_BRIDGE_OP_EDID;
> > +       pdata->bridge.type = DRM_MODE_CONNECTOR_eDP;
> 
> This doesn't look right to me. In the eDP case the EDID reading is
> driven by the panel.

Now that I have the optional connector working based on Sam's series I
think this is the last issue to solve before reposting the DP/HPD
support.

Are you saying that the bridge.ops should only set DRM_BRIDGE_OP_EDID
when pdata->bridge.type == DRM_MODE_CONNECTOR_DisplayPort?

--
Regards

Kieran


> 
> -Doug
Doug Anderson March 10, 2022, 2:44 p.m. UTC | #3 
Hi,

On Thu, Mar 10, 2022 at 3:43 AM Kieran Bingham
<kieran.bingham+renesas@ideasonboard.com> wrote:
>
> Hi Doug,
>
> Quoting Doug Anderson (2022-03-07 19:52:08)
> > Hi,
> >
> > On Mon, Mar 7, 2022 at 10:00 AM Kieran Bingham
> > <kieran.bingham+renesas@ideasonboard.com> wrote:
> > >
> > > From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> > >
> > > Implement the bridge connector-related .get_edid() operation, and report
> > > the related bridge capabilities and type.
> > >
> > > Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> > > Reviewed-by: Stephen Boyd <swboyd@chromium.org>
> > > Reviewed-by: Douglas Anderson <dianders@chromium.org>
> > > Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
> > > ---
> > > Changes since v1:
> > >
> > > - The connector .get_modes() operation doesn't rely on EDID anymore,
> > >   __ti_sn_bridge_get_edid() and ti_sn_bridge_get_edid() got merged
> > >   together
> > >
> > > Notes from Kieran:
> > >
> > > RB Tags collected from:
> > >  https://lore.kernel.org/all/20210322030128.2283-9-laurent.pinchart+renesas@ideasonboard.com/
> > >
> > > However this was over a year ago, so let me know if other patches now
> > > superceed this one or otherwise invalidate this update.
> > >
> > >  drivers/gpu/drm/bridge/ti-sn65dsi86.c | 16 ++++++++++++++++
> > >  1 file changed, 16 insertions(+)
> > >
> > > diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> > > index c55848588123..ffb6c04f6c46 100644
> > > --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> > > +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> > > @@ -1154,6 +1154,19 @@ static void ti_sn_bridge_post_disable(struct drm_bridge *bridge)
> > >         pm_runtime_put_sync(pdata->dev);
> > >  }
> > >
> > > +static struct edid *ti_sn_bridge_get_edid(struct drm_bridge *bridge,
> > > +                                         struct drm_connector *connector)
> > > +{
> > > +       struct ti_sn65dsi86 *pdata = bridge_to_ti_sn65dsi86(bridge);
> > > +       struct edid *edid;
> > > +
> > > +       pm_runtime_get_sync(pdata->dev);
> > > +       edid = drm_get_edid(connector, &pdata->aux.ddc);
> > > +       pm_runtime_put_autosuspend(pdata->dev);
> > > +
> > > +       return edid;
> > > +}
> > > +
> > >  static const struct drm_bridge_funcs ti_sn_bridge_funcs = {
> > >         .attach = ti_sn_bridge_attach,
> > >         .detach = ti_sn_bridge_detach,
> > > @@ -1162,6 +1175,7 @@ static const struct drm_bridge_funcs ti_sn_bridge_funcs = {
> > >         .enable = ti_sn_bridge_enable,
> > >         .disable = ti_sn_bridge_disable,
> > >         .post_disable = ti_sn_bridge_post_disable,
> > > +       .get_edid = ti_sn_bridge_get_edid,
> > >  };
> > >
> > >  static void ti_sn_bridge_parse_lanes(struct ti_sn65dsi86 *pdata,
> > > @@ -1248,6 +1262,8 @@ static int ti_sn_bridge_probe(struct auxiliary_device *adev,
> > >
> > >         pdata->bridge.funcs = &ti_sn_bridge_funcs;
> > >         pdata->bridge.of_node = np;
> > > +       pdata->bridge.ops = DRM_BRIDGE_OP_EDID;
> > > +       pdata->bridge.type = DRM_MODE_CONNECTOR_eDP;
> >
> > This doesn't look right to me. In the eDP case the EDID reading is
> > driven by the panel.
>
> Now that I have the optional connector working based on Sam's series I
> think this is the last issue to solve before reposting the DP/HPD
> support.
>
> Are you saying that the bridge.ops should only set DRM_BRIDGE_OP_EDID
> when pdata->bridge.type == DRM_MODE_CONNECTOR_DisplayPort?

Yes.

-Doug
diff mbox series

Patch

diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
index c55848588123..ffb6c04f6c46 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
@@ -1154,6 +1154,19 @@  static void ti_sn_bridge_post_disable(struct drm_bridge *bridge)
 	pm_runtime_put_sync(pdata->dev);
 }
 
+static struct edid *ti_sn_bridge_get_edid(struct drm_bridge *bridge,
+					  struct drm_connector *connector)
+{
+	struct ti_sn65dsi86 *pdata = bridge_to_ti_sn65dsi86(bridge);
+	struct edid *edid;
+
+	pm_runtime_get_sync(pdata->dev);
+	edid = drm_get_edid(connector, &pdata->aux.ddc);
+	pm_runtime_put_autosuspend(pdata->dev);
+
+	return edid;
+}
+
 static const struct drm_bridge_funcs ti_sn_bridge_funcs = {
 	.attach = ti_sn_bridge_attach,
 	.detach = ti_sn_bridge_detach,
@@ -1162,6 +1175,7 @@  static const struct drm_bridge_funcs ti_sn_bridge_funcs = {
 	.enable = ti_sn_bridge_enable,
 	.disable = ti_sn_bridge_disable,
 	.post_disable = ti_sn_bridge_post_disable,
+	.get_edid = ti_sn_bridge_get_edid,
 };
 
 static void ti_sn_bridge_parse_lanes(struct ti_sn65dsi86 *pdata,
@@ -1248,6 +1262,8 @@  static int ti_sn_bridge_probe(struct auxiliary_device *adev,
 
 	pdata->bridge.funcs = &ti_sn_bridge_funcs;
 	pdata->bridge.of_node = np;
+	pdata->bridge.ops = DRM_BRIDGE_OP_EDID;
+	pdata->bridge.type = DRM_MODE_CONNECTOR_eDP;
 
 	drm_bridge_add(&pdata->bridge);