diff options
| author | Oleh Kuzhylnyi <okuzhyln@amd.com> | 2025-08-18 13:19:29 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2025-09-05 17:38:40 -0400 |
| commit | 9fd2da71c301184d98fe37674ca8d017d1ce6600 (patch) | |
| tree | 20ad36dee0211cecff63e62c8e4b2c77aef44abf | |
| parent | d6fa8026617896c23cb165f09f1c1d32fe22a3df (diff) | |
drm/amd/display: Add HDCP policy control
[Why]
DM should be able to control HDCP retry limit via configurable
parameter.
[How]
Expose a retry_limit parameter for controlling the maximum number of
retries and lift the hardcode out to DM.
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Aric Cyr <aric.cyr@amd.com>
Signed-off-by: Oleh Kuzhylnyi <okuzhyln@amd.com>
Signed-off-by: Wayne Lin <wayne.lin@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c | 5 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h | 1 |
3 files changed, 6 insertions, 2 deletions
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 437174d4fed5..58e084f52526 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 @@ -223,6 +223,7 @@ void hdcp_update_display(struct hdcp_workqueue *hdcp_work, display_adjust.disable = MOD_HDCP_DISPLAY_NOT_DISABLE; link_adjust.auth_delay = 2; + link_adjust.retry_limit = MAX_NUM_OF_ATTEMPTS; if (content_type == DRM_MODE_HDCP_CONTENT_TYPE0) { link_adjust.hdcp2.force_type = MOD_HDCP_FORCE_TYPE_0; @@ -572,6 +573,7 @@ static void update_config(void *handle, struct cp_psp_stream_config *config) link->dp.usb4_enabled = config->usb4_enabled; display->adjust.disable = MOD_HDCP_DISPLAY_DISABLE_AUTHENTICATION; link->adjust.auth_delay = 2; + link->adjust.retry_limit = MAX_NUM_OF_ATTEMPTS; link->adjust.hdcp1.disable = 0; hdcp_w->encryption_status[display->index] = MOD_HDCP_ENCRYPTION_STATUS_HDCP_OFF; diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c index 5e01c6e24cbc..c760216a6240 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c @@ -29,6 +29,7 @@ static void push_error_status(struct mod_hdcp *hdcp, enum mod_hdcp_status status) { struct mod_hdcp_trace *trace = &hdcp->connection.trace; + const uint8_t retry_limit = hdcp->connection.link.adjust.retry_limit; if (trace->error_count < MAX_NUM_OF_ERROR_TRACE) { trace->errors[trace->error_count].status = status; @@ -39,11 +40,11 @@ static void push_error_status(struct mod_hdcp *hdcp, if (is_hdcp1(hdcp)) { hdcp->connection.hdcp1_retry_count++; - if (hdcp->connection.hdcp1_retry_count == MAX_NUM_OF_ATTEMPTS) + if (hdcp->connection.hdcp1_retry_count == retry_limit) hdcp->connection.link.adjust.hdcp1.disable = 1; } else if (is_hdcp2(hdcp)) { hdcp->connection.hdcp2_retry_count++; - if (hdcp->connection.hdcp2_retry_count == MAX_NUM_OF_ATTEMPTS) + if (hdcp->connection.hdcp2_retry_count == retry_limit) hdcp->connection.link.adjust.hdcp2.disable = 1; } } 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 c42468bb70ac..b51ddf2846df 100644 --- a/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h +++ b/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h @@ -220,6 +220,7 @@ struct mod_hdcp_link_adjustment_hdcp2 { struct mod_hdcp_link_adjustment { uint8_t auth_delay; + uint8_t retry_limit; struct mod_hdcp_link_adjustment_hdcp1 hdcp1; struct mod_hdcp_link_adjustment_hdcp2 hdcp2; }; |