[Intel-gfx] [PATCH 4/5] drm/amdgpu: utilize subconnector property for DP through atombios

[Jani Nikula]

On Thu, 16 Apr 2020, Alex Deucher <alexdeucher at gmail.com> wrote:
> On Wed, Apr 15, 2020 at 6:05 AM Jani Nikula <jani.nikula at intel.com> wrote:
>>
>>
>> Alex, Harry, Christian, can you please eyeball this series and see if it
>> makes sense for you?
>>
>
> Patches 4, 5 are:
> Acked-by: Alex Deucher <alexander.deucher at amd.com>
> Feel free to take them through whichever tree you want.

Thanks a bunch! I'll let you know.

BR,
Jani.

>
> Alex
>
>
>> Thanks,
>> Jani.
>>
>>
>> On Tue, 07 Apr 2020, Jeevan B <jeevan.b at intel.com> wrote:
>> > From: Oleg Vasilev <oleg.vasilev at intel.com>
>> >
>> > Since DP-specific information is stored in driver's structures, every
>> > driver needs to implement subconnector property by itself.
>> >
>> > v2: rebase
>> >
>> > 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: amd-gfx at lists.freedesktop.org
>> > Signed-off-by: Jeevan B <jeevan.b at intel.com>
>> > Signed-off-by: Oleg Vasilev <oleg.vasilev at intel.com>
>> > Reviewed-by: Emil Velikov <emil.velikov at collabora.com>
>> > Link: https://patchwork.freedesktop.org/patch/msgid/20190829114854.1539-6-oleg.vasilev@intel.com
>> > ---
>> >  drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c | 10 ++++++++++
>> >  drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h       |  1 +
>> >  drivers/gpu/drm/amd/amdgpu/atombios_dp.c       | 18 +++++++++++++++++-
>> >  3 files changed, 28 insertions(+), 1 deletion(-)
>> >
>> > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
>> > index f355d9a..71aade0 100644
>> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
>> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
>> > @@ -26,6 +26,7 @@
>> >
>> >  #include <drm/drm_edid.h>
>> >  #include <drm/drm_fb_helper.h>
>> > +#include <drm/drm_dp_helper.h>
>> >  #include <drm/drm_probe_helper.h>
>> >  #include <drm/amdgpu_drm.h>
>> >  #include "amdgpu.h"
>> > @@ -1405,6 +1406,10 @@ amdgpu_connector_dp_detect(struct drm_connector *connector, bool force)
>> >               pm_runtime_put_autosuspend(connector->dev->dev);
>> >       }
>> >
>> > +     drm_dp_set_subconnector_property(&amdgpu_connector->base,
>> > +                                      ret,
>> > +                                      amdgpu_dig_connector->dpcd,
>> > +                                      amdgpu_dig_connector->downstream_ports);
>> >       return ret;
>> >  }
>> >
>> > @@ -1951,6 +1956,11 @@ amdgpu_connector_add(struct amdgpu_device *adev,
>> >       if (has_aux)
>> >               amdgpu_atombios_dp_aux_init(amdgpu_connector);
>> >
>> > +     if (connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
>> > +         connector_type == DRM_MODE_CONNECTOR_eDP) {
>> > +             drm_mode_add_dp_subconnector_property(&amdgpu_connector->base);
>> > +     }
>> > +
>> >       return;
>> >
>> >  failed:
>> > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
>> > index 37ba07e..04a430e 100644
>> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
>> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
>> > @@ -469,6 +469,7 @@ struct amdgpu_encoder {
>> >  struct amdgpu_connector_atom_dig {
>> >       /* displayport */
>> >       u8 dpcd[DP_RECEIVER_CAP_SIZE];
>> > +     u8 downstream_ports[DP_MAX_DOWNSTREAM_PORTS];
>> >       u8 dp_sink_type;
>> >       int dp_clock;
>> >       int dp_lane_count;
>> > diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
>> > index 9b74cfd..900b272 100644
>> > --- a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
>> > +++ b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
>> > @@ -328,6 +328,22 @@ static void amdgpu_atombios_dp_probe_oui(struct amdgpu_connector *amdgpu_connect
>> >                             buf[0], buf[1], buf[2]);
>> >  }
>> >
>> > +static void amdgpu_atombios_dp_ds_ports(struct amdgpu_connector *amdgpu_connector)
>> > +{
>> > +     struct amdgpu_connector_atom_dig *dig_connector = amdgpu_connector->con_priv;
>> > +     int ret;
>> > +
>> > +     if (dig_connector->dpcd[DP_DPCD_REV] > 0x10) {
>> > +             ret = drm_dp_dpcd_read(&amdgpu_connector->ddc_bus->aux,
>> > +                                    DP_DOWNSTREAM_PORT_0,
>> > +                                    dig_connector->downstream_ports,
>> > +                                    DP_MAX_DOWNSTREAM_PORTS);
>> > +             if (ret)
>> > +                     memset(dig_connector->downstream_ports, 0,
>> > +                            DP_MAX_DOWNSTREAM_PORTS);
>> > +     }
>> > +}
>> > +
>> >  int amdgpu_atombios_dp_get_dpcd(struct amdgpu_connector *amdgpu_connector)
>> >  {
>> >       struct amdgpu_connector_atom_dig *dig_connector = amdgpu_connector->con_priv;
>> > @@ -343,7 +359,7 @@ int amdgpu_atombios_dp_get_dpcd(struct amdgpu_connector *amdgpu_connector)
>> >                             dig_connector->dpcd);
>> >
>> >               amdgpu_atombios_dp_probe_oui(amdgpu_connector);
>> > -
>> > +             amdgpu_atombios_dp_ds_ports(amdgpu_connector);
>> >               return 0;
>> >       }
>>
>> --
>> Jani Nikula, Intel Open Source Graphics Center
>> _______________________________________________
>> dri-devel mailing list
>> dri-devel at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Jani Nikula, Intel Open Source Graphics Center