From: hersen wu <hersenxs.wu@xxxxxxx>
[Why]
connector hdcp properties are lost after display is
unplgged from mst hub. connector is destroyed with
dm_dp_mst_connector_destroy. when display is plugged
back, hdcp is not desired, hdcp could not be enabled
by linux kernel automatically.
[How]
save hdcp properties into hdcp_work within
amdgpu_dm_atomic_commit_tail. if the same display is
plugged back with same display index, its hdcp
properties will be retrieved from hdcp_work within
dm_dp_mst_get_modes
Reviewed-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@xxxxxxx>
Acked-by: Jasdeep Dhillon <jdhillon@xxxxxxx>
Signed-off-by: hersen wu <hersenxs.wu@xxxxxxx>
---
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 104 +++++++++++++++++-
.../amd/display/amdgpu_dm/amdgpu_dm_hdcp.h | 13 +++
.../display/amdgpu_dm/amdgpu_dm_mst_types.c | 25 +++++
3 files changed, 138 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index bbacd764bf0f..7affe0899418 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -8292,15 +8292,65 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
}
}
#ifdef CONFIG_DRM_AMD_DC_HDCP
+ for_each_oldnew_connector_in_state(state, connector, old_con_state, new_con_state, i) {
+ struct dm_connector_state *dm_new_con_state = to_dm_connector_state(new_con_state);
+ struct amdgpu_crtc *acrtc = to_amdgpu_crtc(dm_new_con_state->base.crtc);
+ struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
+
+ pr_debug("[HDCP_DM] -------------- i : %x ----------\n", i);
+
+ if (!connector)
+ continue;
+
+ pr_debug("[HDCP_DM] connector->index: %x connect_status: %x dpms: %x\n",
+ connector->index, connector->status, connector->dpms);
+ pr_debug("[HDCP_DM] state protection old: %x new: %x\n",
+ old_con_state->content_protection, new_con_state->content_protection);
+
+ if (aconnector->dc_sink) {
+ if (aconnector->dc_sink->sink_signal != SIGNAL_TYPE_VIRTUAL &&
+ aconnector->dc_sink->sink_signal != SIGNAL_TYPE_NONE) {
+ pr_debug("[HDCP_DM] pipe_ctx dispname=%s\n",
+ aconnector->dc_sink->edid_caps.display_name);
+ }
+ }
+
+ new_crtc_state = NULL;
+ old_crtc_state = NULL;
+
+ if (acrtc) {
+ new_crtc_state = drm_atomic_get_new_crtc_state(state, &acrtc->base);
+ old_crtc_state = drm_atomic_get_old_crtc_state(state, &acrtc->base);
+ }
+ if (old_crtc_state)
+ pr_debug("old crtc en: %x a: %x m: %x a-chg: %x c-chg: %x\n",
+ old_crtc_state->enable,
+ old_crtc_state->active,
+ old_crtc_state->mode_changed,
+ old_crtc_state->active_changed,
+ old_crtc_state->connectors_changed);
+
+ if (new_crtc_state)
+ pr_debug("NEW crtc en: %x a: %x m: %x a-chg: %x c-chg: %x\n",
+ new_crtc_state->enable,
+ new_crtc_state->active,
+ new_crtc_state->mode_changed,
+ new_crtc_state->active_changed,
+ new_crtc_state->connectors_changed);
+ }
+
for_each_oldnew_connector_in_state(state, connector, old_con_state, new_con_state, i) {
struct dm_connector_state *dm_new_con_state = to_dm_connector_state(new_con_state);
struct amdgpu_crtc *acrtc = to_amdgpu_crtc(dm_new_con_state->base.crtc);
struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
new_crtc_state = NULL;
+ old_crtc_state = NULL;
- if (acrtc)
+ if (acrtc) {
new_crtc_state = drm_atomic_get_new_crtc_state(state, &acrtc->base);
+ old_crtc_state = drm_atomic_get_old_crtc_state(state, &acrtc->base);
+ }
dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
@@ -8312,11 +8362,57 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
continue;
}
- if (is_content_protection_different(new_con_state, old_con_state, connector, adev->dm.hdcp_workqueue))
+ if (is_content_protection_different(
+ new_crtc_state,
+ old_crtc_state,
+ new_con_state,
+ old_con_state,
+ connector,
+ adev->dm.hdcp_workqueue)) {
+ /* when display is unplugged from mst hub, connctor will
+ * be destroyed within dm_dp_mst_connector_destroy. connector
+ * hdcp perperties, like type, undesired, desired, enabled,
+ * will be lost. So, save hdcp properties into hdcp_work within
+ * amdgpu_dm_atomic_commit_tail. if the same display is
+ * plugged back with same display index, its hdcp properties
+ * will be retrieved from hdcp_work within dm_dp_mst_get_modes
+ */
+
+ bool enable_encryption = false;
+
+ if (new_con_state->content_protection ==
+ DRM_MODE_CONTENT_PROTECTION_DESIRED)
+ enable_encryption = true;
+
+
+ if (aconnector->dc_link && aconnector->dc_sink &&
+ aconnector->dc_link->type == dc_connection_mst_branch) {
+ struct hdcp_workqueue *hdcp_work = adev->dm.hdcp_workqueue;
+ struct hdcp_workqueue *hdcp_w =
+ &hdcp_work[aconnector->dc_link->link_index];
+
+ hdcp_w->hdcp_content_type[connector->index] =
+ new_con_state->hdcp_content_type;
+ hdcp_w->content_protection[connector->index] =
+ new_con_state->content_protection;
+ }
+
+ if (new_crtc_state && new_crtc_state->mode_changed &&
+ new_con_state->content_protection >=
+ DRM_MODE_CONTENT_PROTECTION_DESIRED) {
+ enable_encryption = true;
+ }
+
+ DRM_INFO("[HDCP_DM] hdcp_update_display enable_encryption = %x\n",
+ enable_encryption);
+
hdcp_update_display(
- adev->dm.hdcp_workqueue, aconnector->dc_link->link_index, aconnector,
+ adev->dm.hdcp_workqueue,
+ aconnector->dc_link->link_index,
+ aconnector,
new_con_state->hdcp_content_type,
- new_con_state->content_protection == DRM_MODE_CONTENT_PROTECTION_DESIRED);
+ enable_encryption);
+ }
}
#endif
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.h
index 6e2537e579fa..69b445b011c8 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.h
@@ -52,6 +52,19 @@ struct hdcp_workqueue {
struct mod_hdcp_link link;
enum mod_hdcp_encryption_status encryption_status[AMDGPU_DM_MAX_DISPLAY_INDEX];
+ /* when display is unplugged from mst hub, connctor will be
+ * destroyed within dm_dp_mst_connector_destroy. connector
+ * hdcp perperties, like type, undesired, desired, enabled,
+ * will be lost. So, save hdcp properties into hdcp_work within
+ * amdgpu_dm_atomic_commit_tail. if the same display is
+ * plugged back with same display index, its hdcp properties
+ * will be retrieved from hdcp_work within dm_dp_mst_get_modes
+ */
+ /* un-desired, desired, enabled */
+ unsigned int content_protection[AMDGPU_DM_MAX_DISPLAY_INDEX];
+ /* hdcp1.x, hdcp2.x */
+ unsigned int hdcp_content_type[AMDGPU_DM_MAX_DISPLAY_INDEX];
+
uint8_t max_link;
uint8_t *srm;
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
index eef71940e43d..3270c61d3afe 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
@@ -31,6 +31,9 @@
#include "amdgpu.h"
#include "amdgpu_dm.h"
#include "amdgpu_dm_mst_types.h"
+#ifdef CONFIG_DRM_AMD_DC_HDCP
+#include "amdgpu_dm_hdcp.h"
+#endif
#include "dc.h"
#include "dm_helpers.h"
@@ -344,6 +347,28 @@ static int dm_dp_mst_get_modes(struct drm_connector *connector)
/* dc_link_add_remote_sink returns a new reference */
aconnector->dc_sink = dc_sink;
+ /* when display is unplugged from mst hub, connctor will be
+ * destroyed within dm_dp_mst_connector_destroy. connector
+ * hdcp perperties, like type, undesired, desired, enabled,
+ * will be lost. So, save hdcp properties into hdcp_work within
+ * amdgpu_dm_atomic_commit_tail. if the same display is
+ * plugged back with same display index, its hdcp properties
+ * will be retrieved from hdcp_work within dm_dp_mst_get_modes
+ */
+#ifdef CONFIG_DRM_AMD_DC_HDCP
+ if (aconnector->dc_sink && connector->state) {
+ struct drm_device *dev = connector->dev;
+ struct amdgpu_device *adev = drm_to_adev(dev);
+ struct hdcp_workqueue *hdcp_work = adev->dm.hdcp_workqueue;
+ struct hdcp_workqueue *hdcp_w = &hdcp_work[aconnector->dc_link->link_index];
+
+ connector->state->hdcp_content_type =
+ hdcp_w->hdcp_content_type[connector->index];
+ connector->state->content_protection =
+ hdcp_w->content_protection[connector->index];
+ }
+#endif
+
if (aconnector->dc_sink) {
amdgpu_dm_update_freesync_caps(
connector, aconnector->edid);
--
2.34.1
