Re: [PATCH v7 1/9] drm_dp_cec: add connector info support.

[Ben Skeggs <bskeggs@redhat.com>]

On Fri, Aug 16, 2019 at 4:10 AM Lyude Paul <lyude@redhat.com> wrote:
>
> Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>

>
> On Wed, 2019-08-14 at 12:44 +0200, Dariusz Marcinkiewicz wrote:
> > Pass the connector info to the CEC adapter. This makes it possible
> > to associate the CEC adapter with the corresponding drm connector.
> >
> > Signed-off-by: Dariusz Marcinkiewicz <darekm@google.com>
> > Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
> > Tested-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
> > ---
> >  .../display/amdgpu_dm/amdgpu_dm_mst_types.c   |  2 +-
> >  drivers/gpu/drm/drm_dp_cec.c                  | 25 ++++++++++++-------
> >  drivers/gpu/drm/i915/display/intel_dp.c       |  4 +--
> >  drivers/gpu/drm/nouveau/nouveau_connector.c   |  3 +--
> >  include/drm/drm_dp_helper.h                   | 17 ++++++-------
> >  5 files changed, 27 insertions(+), 24 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> > b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> > index 16218a202b591..5ec14efd4d8cb 100644
> > --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> > +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> > @@ -416,7 +416,7 @@ void amdgpu_dm_initialize_dp_connector(struct
> > amdgpu_display_manager *dm,
> >
> >       drm_dp_aux_register(&aconnector->dm_dp_aux.aux);
> >       drm_dp_cec_register_connector(&aconnector->dm_dp_aux.aux,
> > -                                   aconnector->base.name, dm->adev->dev);
> > +                                   &aconnector->base);
> >       aconnector->mst_mgr.cbs = &dm_mst_cbs;
> >       drm_dp_mst_topology_mgr_init(
> >               &aconnector->mst_mgr,
> > diff --git a/drivers/gpu/drm/drm_dp_cec.c b/drivers/gpu/drm/drm_dp_cec.c
> > index b15cee85b702b..b457c16c3a8bb 100644
> > --- a/drivers/gpu/drm/drm_dp_cec.c
> > +++ b/drivers/gpu/drm/drm_dp_cec.c
> > @@ -8,7 +8,9 @@
> >  #include <linux/kernel.h>
> >  #include <linux/module.h>
> >  #include <linux/slab.h>
> > +#include <drm/drm_connector.h>
> >  #include <drm/drm_dp_helper.h>
> > +#include <drm/drmP.h>
> >  #include <media/cec.h>
> >
> >  /*
> > @@ -295,7 +297,10 @@ static void drm_dp_cec_unregister_work(struct work_struct
> > *work)
> >   */
> >  void drm_dp_cec_set_edid(struct drm_dp_aux *aux, const struct edid *edid)
> >  {
> > -     u32 cec_caps = CEC_CAP_DEFAULTS | CEC_CAP_NEEDS_HPD;
> > +     struct drm_connector *connector = aux->cec.connector;
> > +     u32 cec_caps = CEC_CAP_DEFAULTS | CEC_CAP_NEEDS_HPD |
> > +                    CEC_CAP_CONNECTOR_INFO;
> > +     struct cec_connector_info conn_info;
> >       unsigned int num_las = 1;
> >       u8 cap;
> >
> > @@ -344,13 +349,17 @@ void drm_dp_cec_set_edid(struct drm_dp_aux *aux, const
> > struct edid *edid)
> >
> >       /* Create a new adapter */
> >       aux->cec.adap = cec_allocate_adapter(&drm_dp_cec_adap_ops,
> > -                                          aux, aux->cec.name, cec_caps,
> > +                                          aux, connector->name, cec_caps,
> >                                            num_las);
> >       if (IS_ERR(aux->cec.adap)) {
> >               aux->cec.adap = NULL;
> >               goto unlock;
> >       }
> > -     if (cec_register_adapter(aux->cec.adap, aux->cec.parent)) {
> > +
> > +     cec_fill_conn_info_from_drm(&conn_info, connector);
> > +     cec_s_conn_info(aux->cec.adap, &conn_info);
> > +
> > +     if (cec_register_adapter(aux->cec.adap, connector->dev->dev)) {
> >               cec_delete_adapter(aux->cec.adap);
> >               aux->cec.adap = NULL;
> >       } else {
> > @@ -406,22 +415,20 @@ EXPORT_SYMBOL(drm_dp_cec_unset_edid);
> >  /**
> >   * drm_dp_cec_register_connector() - register a new connector
> >   * @aux: DisplayPort AUX channel
> > - * @name: name of the CEC device
> > - * @parent: parent device
> > + * @connector: drm connector
> >   *
> >   * A new connector was registered with associated CEC adapter name and
> >   * CEC adapter parent device. After registering the name and parent
> >   * drm_dp_cec_set_edid() is called to check if the connector supports
> >   * CEC and to register a CEC adapter if that is the case.
> >   */
> > -void drm_dp_cec_register_connector(struct drm_dp_aux *aux, const char *name,
> > -                                struct device *parent)
> > +void drm_dp_cec_register_connector(struct drm_dp_aux *aux,
> > +                                struct drm_connector *connector)
> >  {
> >       WARN_ON(aux->cec.adap);
> >       if (WARN_ON(!aux->transfer))
> >               return;
> > -     aux->cec.name = name;
> > -     aux->cec.parent = parent;
> > +     aux->cec.connector = connector;
> >       INIT_DELAYED_WORK(&aux->cec.unregister_work,
> >                         drm_dp_cec_unregister_work);
> >  }
> > diff --git a/drivers/gpu/drm/i915/display/intel_dp.c
> > b/drivers/gpu/drm/i915/display/intel_dp.c
> > index 1092499115760..de2486fe7bf2d 100644
> > --- a/drivers/gpu/drm/i915/display/intel_dp.c
> > +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> > @@ -5497,7 +5497,6 @@ static int
> >  intel_dp_connector_register(struct drm_connector *connector)
> >  {
> >       struct intel_dp *intel_dp = intel_attached_dp(connector);
> > -     struct drm_device *dev = connector->dev;
> >       int ret;
> >
> >       ret = intel_connector_register(connector);
> > @@ -5512,8 +5511,7 @@ intel_dp_connector_register(struct drm_connector
> > *connector)
> >       intel_dp->aux.dev = connector->kdev;
> >       ret = drm_dp_aux_register(&intel_dp->aux);
> >       if (!ret)
> > -             drm_dp_cec_register_connector(&intel_dp->aux,
> > -                                           connector->name, dev->dev);
> > +             drm_dp_cec_register_connector(&intel_dp->aux, connector);
> >       return ret;
> >  }
> >
> > diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c
> > b/drivers/gpu/drm/nouveau/nouveau_connector.c
> > index 330d7d29a6e34..8aa703347eb54 100644
> > --- a/drivers/gpu/drm/nouveau/nouveau_connector.c
> > +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
> > @@ -1416,8 +1416,7 @@ nouveau_connector_create(struct drm_device *dev,
> >       switch (type) {
> >       case DRM_MODE_CONNECTOR_DisplayPort:
> >       case DRM_MODE_CONNECTOR_eDP:
> > -             drm_dp_cec_register_connector(&nv_connector->aux,
> > -                                           connector->name, dev->dev);
> > +             drm_dp_cec_register_connector(&nv_connector->aux, connector);
> >               break;
> >       }
> >
> > diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
> > index 8364502f92cfe..7972b925a952b 100644
> > --- a/include/drm/drm_dp_helper.h
> > +++ b/include/drm/drm_dp_helper.h
> > @@ -1230,20 +1230,19 @@ struct drm_dp_aux_msg {
> >
> >  struct cec_adapter;
> >  struct edid;
> > +struct drm_connector;
> >
> >  /**
> >   * struct drm_dp_aux_cec - DisplayPort CEC-Tunneling-over-AUX
> >   * @lock: mutex protecting this struct
> >   * @adap: the CEC adapter for CEC-Tunneling-over-AUX support.
> > - * @name: name of the CEC adapter
> > - * @parent: parent device of the CEC adapter
> > + * @connector: the connector this CEC adapter is associated with
> >   * @unregister_work: unregister the CEC adapter
> >   */
> >  struct drm_dp_aux_cec {
> >       struct mutex lock;
> >       struct cec_adapter *adap;
> > -     const char *name;
> > -     struct device *parent;
> > +     struct drm_connector *connector;
> >       struct delayed_work unregister_work;
> >  };
> >
> > @@ -1451,8 +1450,8 @@ drm_dp_has_quirk(const struct drm_dp_desc *desc, enum
> > drm_dp_quirk quirk)
> >
> >  #ifdef CONFIG_DRM_DP_CEC
> >  void drm_dp_cec_irq(struct drm_dp_aux *aux);
> > -void drm_dp_cec_register_connector(struct drm_dp_aux *aux, const char *name,
> > -                                struct device *parent);
> > +void drm_dp_cec_register_connector(struct drm_dp_aux *aux,
> > +                                struct drm_connector *connector);
> >  void drm_dp_cec_unregister_connector(struct drm_dp_aux *aux);
> >  void drm_dp_cec_set_edid(struct drm_dp_aux *aux, const struct edid *edid);
> >  void drm_dp_cec_unset_edid(struct drm_dp_aux *aux);
> > @@ -1461,9 +1460,9 @@ static inline void drm_dp_cec_irq(struct drm_dp_aux
> > *aux)
> >  {
> >  }
> >
> > -static inline void drm_dp_cec_register_connector(struct drm_dp_aux *aux,
> > -                                              const char *name,
> > -                                              struct device *parent)
> > +static inline void
> > +drm_dp_cec_register_connector(struct drm_dp_aux *aux,
> > +                           struct drm_connector *connector)
> >  {
> >  }
> >
>