diff options
| author | Wenjing Liu <wenjing.liu@amd.com> | 2025-10-02 11:02:39 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2025-10-20 18:24:53 -0400 |
| commit | 8c6a0234739e33c8be8830c2eee13a49acfd59ea (patch) | |
| tree | dfd6b3c78f4675f6fe910999ee251cb82d6d1910 /drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c | |
| parent | bf95cf7f7a06850648169bfbe7935073f35f6414 (diff) | |
drm/amd/display: add additional hdcp traces
[why]
Current hdcp trace only tracks hdcp errors. We need to expand the trace
structure for more tracing information.
[how]
Add following traces for hdcp1:
- attempt_count
- downstream_device_count
Add following traces for hdcp2:
- attempt_count
- downstream_device_count
- hdcp1_device_downstream
- hdcp2_legacy_device_downstream
Reviewed-by: Sung Lee <sung.lee@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c index 8bc377560787..1bbd728d4345 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c @@ -29,6 +29,7 @@ static inline enum mod_hdcp_status validate_bksv(struct mod_hdcp *hdcp) { uint64_t n = 0; uint8_t count = 0; + enum mod_hdcp_status status; u8 bksv[sizeof(n)] = { }; memcpy(bksv, hdcp->auth.msg.hdcp1.bksv, sizeof(hdcp->auth.msg.hdcp1.bksv)); @@ -38,8 +39,14 @@ static inline enum mod_hdcp_status validate_bksv(struct mod_hdcp *hdcp) count++; n &= (n - 1); } - return (count == 20) ? MOD_HDCP_STATUS_SUCCESS : - MOD_HDCP_STATUS_HDCP1_INVALID_BKSV; + + if (count == 20) { + hdcp->connection.trace.hdcp1.attempt_count++; + status = MOD_HDCP_STATUS_SUCCESS; + } else { + status = MOD_HDCP_STATUS_HDCP1_INVALID_BKSV; + } + return status; } static inline enum mod_hdcp_status check_ksv_ready(struct mod_hdcp *hdcp) @@ -135,6 +142,8 @@ static inline enum mod_hdcp_status check_device_count(struct mod_hdcp *hdcp) if (get_device_count(hdcp) == 0) return MOD_HDCP_STATUS_HDCP1_DEVICE_COUNT_MISMATCH_FAILURE; + hdcp->connection.trace.hdcp1.downstream_device_count = get_device_count(hdcp); + /* Some MST display may choose to report the internal panel as an HDCP RX. * To update this condition with 1(because the immediate repeater's internal * panel is possibly not included in DEVICE_COUNT) + get_device_count(hdcp). |