diff options
| author | Oleg Vasilev <oleg.vasilev@intel.com> | 2020-04-24 18:20:54 +0530 |
|---|---|---|
| committer | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2020-08-11 14:19:41 +0200 |
| commit | 65bf2cf95d3ade4b56c35b17bb955a64b7f4b019 (patch) | |
| tree | a08941e65e2aa4f1675f995e3f8aaad28a4939e9 /drivers/gpu/drm/amd/amdgpu/atombios_dp.c | |
| parent | fb82313462bac5567a564d4c725dcf8152d6dc46 (diff) | |
drm/amdgpu: utilize subconnector property for DP through atombios
Since DP-specific information is stored in driver's structures, every
driver needs to implement subconnector property by itself.
v2: rebase
v3: renamed a function call
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: David (ChunMing) Zhou <David1.Zhou@amd.com>
Cc: amd-gfx@lists.freedesktop.org
Signed-off-by: Jeevan B <jeevan.b@intel.com>
Signed-off-by: Oleg Vasilev <oleg.vasilev@intel.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1587732655-17544-4-git-send-email-jeevan.b@intel.com
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/atombios_dp.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/atombios_dp.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c index 9b74cfdba7b8..900b2727f432 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; } |