From: Bhawanpreet Lakha <bhawanpreet.la...@amd.com>
[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.la...@amd.com>
Reviewed-by: Hersen Wu <hersenxs...@amd.com>
Acked-by: Rodrigo Siqueira <rodrigo.sique...@amd.com>
---
.../amd/display/amdgpu_dm/amdgpu_dm_hdcp.c | 37 +++++++++++++++++++
drivers/gpu/drm/amd/display/dc/dm_cp_psp.h | 1 +
2 files changed, 38 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
index dcf84a61de37..a8ee42d30911 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
@@ -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*/
diff --git a/drivers/gpu/drm/amd/display/dc/dm_cp_psp.h
b/drivers/gpu/drm/amd/display/dc/dm_cp_psp.h
index 968c46dfb506..5da7677627a1 100644
--- a/drivers/gpu/drm/amd/display/dc/dm_cp_psp.h
+++ b/drivers/gpu/drm/amd/display/dc/dm_cp_psp.h
@@ -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);
};
--
2.27.0
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