[PATCH 05/36] drm/amd/display: Remove hdcp display state with mst fix
Rodrigo Siqueira
Rodrigo.Siqueira at amd.com
Sun Apr 5 20:40:44 UTC 2020
From: Isabel Zhang <isabel.zhang at amd.com>
[Why]
Due to previous code changes, displays transition from active to active
and added state immediately, making it redundant to have both display
states. Previous change to fix this caused HDCP to get into a bad state
when monitor is connected to MST hub, this change fixes that issue.
[How]
Change code behavior so when a device is added successfully the state
remains as active and when addition is unsuccessful change state to
inactive. This removes need for added and active state.
Signed-off-by: Isabel Zhang <isabel.zhang at amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu at amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira at amd.com>
---
.../gpu/drm/amd/display/modules/hdcp/hdcp.c | 5 ++-
.../gpu/drm/amd/display/modules/hdcp/hdcp.h | 28 +++----------
.../display/modules/hdcp/hdcp1_execution.c | 2 +-
.../display/modules/hdcp/hdcp2_execution.c | 2 +-
.../drm/amd/display/modules/hdcp/hdcp_psp.c | 40 +++++++++----------
.../drm/amd/display/modules/inc/mod_hdcp.h | 1 -
6 files changed, 29 insertions(+), 49 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c
index cc1d3f470b99..e9fbd94f8635 100644
--- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c
+++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c
@@ -328,7 +328,8 @@ enum mod_hdcp_status mod_hdcp_add_display(struct mod_hdcp *hdcp,
/* add display to connection */
hdcp->connection.link = *link;
*display_container = *display;
- status = mod_hdcp_add_display_to_topology(hdcp, display->index);
+ status = mod_hdcp_add_display_to_topology(hdcp, display_container);
+
if (status != MOD_HDCP_STATUS_SUCCESS)
goto out;
@@ -374,7 +375,7 @@ enum mod_hdcp_status mod_hdcp_remove_display(struct mod_hdcp *hdcp,
status = mod_hdcp_remove_display_from_topology(hdcp, index);
if (status != MOD_HDCP_STATUS_SUCCESS)
goto out;
- display->state = MOD_HDCP_DISPLAY_INACTIVE;
+ memset(display, 0, sizeof(struct mod_hdcp_display));
/* request authentication when connection is not reset */
if (current_state(hdcp) != HDCP_UNINITIALIZED)
diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h
index 5cb4546be0ef..60ff1a0028ac 100644
--- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h
+++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h
@@ -328,7 +328,7 @@ void mod_hdcp_dump_binary_message(uint8_t *msg, uint32_t msg_size,
/* psp functions */
enum mod_hdcp_status mod_hdcp_add_display_to_topology(
- struct mod_hdcp *hdcp, uint8_t index);
+ struct mod_hdcp *hdcp, struct mod_hdcp_display *display);
enum mod_hdcp_status mod_hdcp_remove_display_from_topology(
struct mod_hdcp *hdcp, uint8_t index);
enum mod_hdcp_status mod_hdcp_hdcp1_create_session(struct mod_hdcp *hdcp);
@@ -503,11 +503,6 @@ static inline uint8_t is_display_active(struct mod_hdcp_display *display)
return display->state >= MOD_HDCP_DISPLAY_ACTIVE;
}
-static inline uint8_t is_display_added(struct mod_hdcp_display *display)
-{
- return display->state >= MOD_HDCP_DISPLAY_ACTIVE_AND_ADDED;
-}
-
static inline uint8_t is_display_encryption_enabled(struct mod_hdcp_display *display)
{
return display->state >= MOD_HDCP_DISPLAY_ENCRYPTION_ENABLED;
@@ -515,34 +510,23 @@ static inline uint8_t is_display_encryption_enabled(struct mod_hdcp_display *dis
static inline uint8_t get_active_display_count(struct mod_hdcp *hdcp)
{
- uint8_t added_count = 0;
+ uint8_t active_count = 0;
uint8_t i;
for (i = 0; i < MAX_NUM_OF_DISPLAYS; i++)
if (is_display_active(&hdcp->displays[i]))
- added_count++;
- return added_count;
-}
-
-static inline uint8_t get_added_display_count(struct mod_hdcp *hdcp)
-{
- uint8_t added_count = 0;
- uint8_t i;
-
- for (i = 0; i < MAX_NUM_OF_DISPLAYS; i++)
- if (is_display_added(&hdcp->displays[i]))
- added_count++;
- return added_count;
+ active_count++;
+ return active_count;
}
-static inline struct mod_hdcp_display *get_first_added_display(
+static inline struct mod_hdcp_display *get_first_active_display(
struct mod_hdcp *hdcp)
{
uint8_t i;
struct mod_hdcp_display *display = NULL;
for (i = 0; i < MAX_NUM_OF_DISPLAYS; i++)
- if (is_display_added(&hdcp->displays[i])) {
+ if (is_display_active(&hdcp->displays[i])) {
display = &hdcp->displays[i];
break;
}
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 37c8c05497d6..f244b72e74e0 100644
--- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c
+++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c
@@ -129,7 +129,7 @@ static inline uint8_t get_device_count(struct mod_hdcp *hdcp)
static inline enum mod_hdcp_status check_device_count(struct mod_hdcp *hdcp)
{
/* device count must be greater than or equal to tracked hdcp displays */
- return (get_device_count(hdcp) < get_added_display_count(hdcp)) ?
+ return (get_device_count(hdcp) < get_active_display_count(hdcp)) ?
MOD_HDCP_STATUS_HDCP1_DEVICE_COUNT_MISMATCH_FAILURE :
MOD_HDCP_STATUS_SUCCESS;
}
diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c
index 491c00f48026..549c113abcf7 100644
--- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c
+++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c
@@ -208,7 +208,7 @@ static inline uint8_t get_device_count(struct mod_hdcp *hdcp)
static enum mod_hdcp_status check_device_count(struct mod_hdcp *hdcp)
{
/* device count must be greater than or equal to tracked hdcp displays */
- return (get_device_count(hdcp) < get_added_display_count(hdcp)) ?
+ return (get_device_count(hdcp) < get_active_display_count(hdcp)) ?
MOD_HDCP_STATUS_HDCP2_DEVICE_COUNT_MISMATCH_FAILURE :
MOD_HDCP_STATUS_SUCCESS;
}
diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.c
index c2929815c3ee..1b54f169392a 100644
--- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.c
+++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.c
@@ -54,7 +54,7 @@ enum mod_hdcp_status mod_hdcp_remove_display_from_topology(
dtm_cmd = (struct ta_dtm_shared_memory *)psp->dtm_context.dtm_shared_buf;
- if (!display || !is_display_added(display))
+ if (!display || !is_display_active(display))
return MOD_HDCP_STATUS_DISPLAY_NOT_FOUND;
memset(dtm_cmd, 0, sizeof(struct ta_dtm_shared_memory));
@@ -75,23 +75,19 @@ enum mod_hdcp_status mod_hdcp_remove_display_from_topology(
return MOD_HDCP_STATUS_SUCCESS;
}
-enum mod_hdcp_status mod_hdcp_add_display_to_topology(struct mod_hdcp *hdcp,
- uint8_t index)
+enum mod_hdcp_status mod_hdcp_add_display_to_topology(
+ struct mod_hdcp *hdcp, struct mod_hdcp_display *display)
{
struct psp_context *psp = hdcp->config.psp.handle;
struct ta_dtm_shared_memory *dtm_cmd;
- struct mod_hdcp_display *display =
- get_active_display_at_index(hdcp, index);
struct mod_hdcp_link *link = &hdcp->connection.link;
if (!psp->dtm_context.dtm_initialized) {
DRM_ERROR("Failed to add display topology, DTM TA is not initialized.");
+ display->state = MOD_HDCP_DISPLAY_INACTIVE;
return MOD_HDCP_STATUS_FAILURE;
}
- if (!display || is_display_added(display))
- return MOD_HDCP_STATUS_UPDATE_TOPOLOGY_FAILURE;
-
dtm_cmd = (struct ta_dtm_shared_memory *)psp->dtm_context.dtm_shared_buf;
memset(dtm_cmd, 0, sizeof(struct ta_dtm_shared_memory));
@@ -113,10 +109,11 @@ enum mod_hdcp_status mod_hdcp_add_display_to_topology(struct mod_hdcp *hdcp,
psp_dtm_invoke(psp, dtm_cmd->cmd_id);
- if (dtm_cmd->dtm_status != TA_DTM_STATUS__SUCCESS)
+ if (dtm_cmd->dtm_status != TA_DTM_STATUS__SUCCESS) {
+ display->state = MOD_HDCP_DISPLAY_INACTIVE;
return MOD_HDCP_STATUS_UPDATE_TOPOLOGY_FAILURE;
+ }
- display->state = MOD_HDCP_DISPLAY_ACTIVE_AND_ADDED;
HDCP_TOP_ADD_DISPLAY_TRACE(hdcp, display->index);
return MOD_HDCP_STATUS_SUCCESS;
@@ -126,7 +123,7 @@ enum mod_hdcp_status mod_hdcp_hdcp1_create_session(struct mod_hdcp *hdcp)
{
struct psp_context *psp = hdcp->config.psp.handle;
- struct mod_hdcp_display *display = get_first_added_display(hdcp);
+ struct mod_hdcp_display *display = get_first_active_display(hdcp);
struct ta_hdcp_shared_memory *hdcp_cmd;
if (!psp->hdcp_context.hdcp_initialized) {
@@ -179,7 +176,7 @@ enum mod_hdcp_status mod_hdcp_hdcp1_destroy_session(struct mod_hdcp *hdcp)
if (is_display_encryption_enabled(
&hdcp->displays[i])) {
hdcp->displays[i].state =
- MOD_HDCP_DISPLAY_ACTIVE_AND_ADDED;
+ MOD_HDCP_DISPLAY_ACTIVE;
HDCP_HDCP1_DISABLED_TRACE(hdcp,
hdcp->displays[i].index);
}
@@ -231,7 +228,7 @@ enum mod_hdcp_status mod_hdcp_hdcp1_enable_encryption(struct mod_hdcp *hdcp)
{
struct psp_context *psp = hdcp->config.psp.handle;
struct ta_hdcp_shared_memory *hdcp_cmd;
- struct mod_hdcp_display *display = get_first_added_display(hdcp);
+ struct mod_hdcp_display *display = get_first_active_display(hdcp);
hdcp_cmd = (struct ta_hdcp_shared_memory *)psp->hdcp_context.hdcp_shared_buf;
memset(hdcp_cmd, 0, sizeof(struct ta_hdcp_shared_memory));
@@ -301,9 +298,8 @@ enum mod_hdcp_status mod_hdcp_hdcp1_enable_dp_stream_encryption(struct mod_hdcp
for (i = 0; i < MAX_NUM_OF_DISPLAYS; i++) {
- if (hdcp->displays[i].state != MOD_HDCP_DISPLAY_ACTIVE_AND_ADDED ||
- hdcp->displays[i].adjust.disable)
- continue;
+ if (hdcp->displays[i].adjust.disable || hdcp->displays[i].state != MOD_HDCP_DISPLAY_ACTIVE)
+ continue;
memset(hdcp_cmd, 0, sizeof(struct ta_hdcp_shared_memory));
@@ -364,7 +360,7 @@ enum mod_hdcp_status mod_hdcp_hdcp2_create_session(struct mod_hdcp *hdcp)
{
struct psp_context *psp = hdcp->config.psp.handle;
struct ta_hdcp_shared_memory *hdcp_cmd;
- struct mod_hdcp_display *display = get_first_added_display(hdcp);
+ struct mod_hdcp_display *display = get_first_active_display(hdcp);
if (!psp->hdcp_context.hdcp_initialized) {
DRM_ERROR("Failed to create hdcp session, HDCP TA is not initialized");
@@ -423,7 +419,7 @@ enum mod_hdcp_status mod_hdcp_hdcp2_destroy_session(struct mod_hdcp *hdcp)
if (is_display_encryption_enabled(
&hdcp->displays[i])) {
hdcp->displays[i].state =
- MOD_HDCP_DISPLAY_ACTIVE_AND_ADDED;
+ MOD_HDCP_DISPLAY_ACTIVE;
HDCP_HDCP2_DISABLED_TRACE(hdcp,
hdcp->displays[i].index);
}
@@ -662,7 +658,7 @@ enum mod_hdcp_status mod_hdcp_hdcp2_enable_encryption(struct mod_hdcp *hdcp)
{
struct psp_context *psp = hdcp->config.psp.handle;
struct ta_hdcp_shared_memory *hdcp_cmd;
- struct mod_hdcp_display *display = get_first_added_display(hdcp);
+ struct mod_hdcp_display *display = get_first_active_display(hdcp);
hdcp_cmd = (struct ta_hdcp_shared_memory *)psp->hdcp_context.hdcp_shared_buf;
memset(hdcp_cmd, 0, sizeof(struct ta_hdcp_shared_memory));
@@ -747,9 +743,9 @@ enum mod_hdcp_status mod_hdcp_hdcp2_enable_dp_stream_encryption(struct mod_hdcp
for (i = 0; i < MAX_NUM_OF_DISPLAYS; i++) {
- if (hdcp->displays[i].state != MOD_HDCP_DISPLAY_ACTIVE_AND_ADDED ||
- hdcp->displays[i].adjust.disable)
- continue;
+ if (hdcp->displays[i].adjust.disable || hdcp->displays[i].state != MOD_HDCP_DISPLAY_ACTIVE)
+ continue;
+
hdcp_cmd->in_msg.hdcp2_enable_dp_stream_encryption.display_handle = hdcp->displays[i].index;
hdcp_cmd->in_msg.hdcp2_enable_dp_stream_encryption.session_handle = hdcp->auth.id;
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 c088602bc1a0..eae9309cfb24 100644
--- a/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h
+++ b/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h
@@ -117,7 +117,6 @@ enum mod_hdcp_operation_mode {
enum mod_hdcp_display_state {
MOD_HDCP_DISPLAY_INACTIVE = 0,
MOD_HDCP_DISPLAY_ACTIVE,
- MOD_HDCP_DISPLAY_ACTIVE_AND_ADDED,
MOD_HDCP_DISPLAY_ENCRYPTION_ENABLED
};
--
2.26.0
More information about the amd-gfx
mailing list