diff options
| author | Ahmad Othman <ahmad.othman@amd.com> | 2022-03-04 11:56:19 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-03-25 12:40:26 -0400 |
| commit | 4268d081619a55019e44bf0a62222d47e1e09470 (patch) | |
| tree | ca428f198a96c45ac584ba144837b013d7bedc81 /drivers/gpu/drm/amd/display/modules | |
| parent | f3fa490960e8acf089ace0301a7ccb6d44ec9641 (diff) | |
drm/amd/display: Fix HDCP SEND AKI INIT error
[why]
HDCP sends AKI INIT error in case of multiple display on dock
[how]
Add new checks and method to handle display adjustment
for multiple display cases
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Ahmad Othman <ahmad.othman@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/modules')
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c | 38 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h | 8 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h | 2 |
3 files changed, 46 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c index 3e81850a7ffe..5e01c6e24cbc 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c @@ -251,6 +251,33 @@ out: return status; } +static enum mod_hdcp_status update_display_adjustments(struct mod_hdcp *hdcp, + struct mod_hdcp_display *display, + struct mod_hdcp_display_adjustment *adj) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_NOT_IMPLEMENTED; + + if (is_in_authenticated_states(hdcp) && + is_dp_mst_hdcp(hdcp) && + display->adjust.disable == true && + adj->disable == false) { + display->adjust.disable = false; + if (is_hdcp1(hdcp)) + status = mod_hdcp_hdcp1_enable_dp_stream_encryption(hdcp); + else if (is_hdcp2(hdcp)) + status = mod_hdcp_hdcp2_enable_dp_stream_encryption(hdcp); + + if (status != MOD_HDCP_STATUS_SUCCESS) + display->adjust.disable = true; + } + + if (status == MOD_HDCP_STATUS_SUCCESS && + memcmp(adj, &display->adjust, + sizeof(struct mod_hdcp_display_adjustment)) != 0) + status = MOD_HDCP_STATUS_NOT_IMPLEMENTED; + + return status; +} /* * Implementation of functions in mod_hdcp.h */ @@ -391,7 +418,7 @@ out: return status; } -enum mod_hdcp_status mod_hdcp_update_authentication(struct mod_hdcp *hdcp, +enum mod_hdcp_status mod_hdcp_update_display(struct mod_hdcp *hdcp, uint8_t index, struct mod_hdcp_link_adjustment *link_adjust, struct mod_hdcp_display_adjustment *display_adjust, @@ -419,6 +446,15 @@ enum mod_hdcp_status mod_hdcp_update_authentication(struct mod_hdcp *hdcp, goto out; } + if (memcmp(link_adjust, &hdcp->connection.link.adjust, + sizeof(struct mod_hdcp_link_adjustment)) == 0 && + memcmp(display_adjust, &display->adjust, + sizeof(struct mod_hdcp_display_adjustment)) != 0) { + status = update_display_adjustments(hdcp, display, display_adjust); + if (status != MOD_HDCP_STATUS_NOT_IMPLEMENTED) + goto out; + } + /* stop current authentication */ status = reset_authentication(hdcp, output); if (status != MOD_HDCP_STATUS_SUCCESS) diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h index 8502263d2968..4e7021c3c845 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h @@ -445,6 +445,14 @@ static inline uint8_t is_in_hdcp2_dp_states(struct mod_hdcp *hdcp) current_state(hdcp) <= HDCP2_DP_STATE_END); } +static inline uint8_t is_in_authenticated_states(struct mod_hdcp *hdcp) +{ + return (current_state(hdcp) == D1_A4_AUTHENTICATED || + current_state(hdcp) == H1_A45_AUTHENTICATED || + current_state(hdcp) == D2_A5_AUTHENTICATED || + current_state(hdcp) == H2_A5_AUTHENTICATED); +} + static inline uint8_t is_hdcp1(struct mod_hdcp *hdcp) { return (is_in_hdcp1_states(hdcp) || is_in_hdcp1_dp_states(hdcp)); diff --git a/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h b/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h index f7420c3f5672..3348bb97ef81 100644 --- a/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h +++ b/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h @@ -294,7 +294,7 @@ enum mod_hdcp_status mod_hdcp_remove_display(struct mod_hdcp *hdcp, uint8_t index, struct mod_hdcp_output *output); /* called per display to apply new authentication adjustment */ -enum mod_hdcp_status mod_hdcp_update_authentication(struct mod_hdcp *hdcp, +enum mod_hdcp_status mod_hdcp_update_display(struct mod_hdcp *hdcp, uint8_t index, struct mod_hdcp_link_adjustment *link_adjust, struct mod_hdcp_display_adjustment *display_adjust, |