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drm/amd/display: enable assr 

[Why]
assr is content protection for eDP, in order to use it we need to call
psp ta (dtm)

[How]
We have a enable_assr callback, hook into this and call the correct psp
cmd id to enable assr.

Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Bhawanpreet Lakha 2020-06-01 17:22:41 -04:00 committed by Alex Deucher
parent 0cc722248a
commit ef9de1876a
2 changed files with 38 additions and 0 deletions
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37
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
View File

@ -390,6 +390,42 @@ void hdcp_destroy(struct hdcp_workqueue *hdcp_work)
kfree(hdcp_work);
}
static bool enable_assr(void *handle, struct dc_link *link)
{
struct hdcp_workqueue *hdcp_work = handle;
struct mod_hdcp hdcp = hdcp_work->hdcp;
struct psp_context *psp = hdcp.config.psp.handle;
struct ta_dtm_shared_memory *dtm_cmd;
bool res = true;
if (!psp->dtm_context.dtm_initialized) {
DRM_INFO("Failed to enable ASSR, DTM TA is not initialized.");
return false;
}
dtm_cmd = (struct ta_dtm_shared_memory *)psp->dtm_context.dtm_shared_buf;
mutex_lock(&psp->dtm_context.mutex);
memset(dtm_cmd, 0, sizeof(struct ta_dtm_shared_memory));
dtm_cmd->cmd_id = TA_DTM_COMMAND__TOPOLOGY_ASSR_ENABLE;
dtm_cmd->dtm_in_message.topology_assr_enable.display_topology_dig_be_index = link->link_enc_hw_inst;
dtm_cmd->dtm_status = TA_DTM_STATUS__GENERIC_FAILURE;
psp_dtm_invoke(psp, dtm_cmd->cmd_id);
if (dtm_cmd->dtm_status != TA_DTM_STATUS__SUCCESS) {
DRM_INFO("Failed to enable ASSR");
res = false;
}
mutex_unlock(&psp->dtm_context.mutex);
return res;
}
static void update_config(void *handle, struct cp_psp_stream_config *config)
{
struct hdcp_workqueue *hdcp_work = handle;
@ -599,6 +635,7 @@ struct hdcp_workqueue *hdcp_create_workqueue(struct amdgpu_device *adev, struct
}
cp_psp->funcs.update_stream_config = update_config;
cp_psp->funcs.enable_assr = enable_assr;
cp_psp->handle = hdcp_work;
/* File created at /sys/class/drm/card0/device/hdcp_srm*/

1
drivers/gpu/drm/amd/display/dc/dm_cp_psp.h
View File

@ -38,6 +38,7 @@ struct cp_psp_stream_config {
};
struct cp_psp_funcs {
bool (*enable_assr)(void *handle, struct dc_link *link);
void (*update_stream_config)(void *handle, struct cp_psp_stream_config *config);
};