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drm/amd/display: Handle hdcp2.2 type0/1 in dm

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[Why]
HDCP 2.2 uses type0 and type1 content type. This is passed to the receiver
to stream the proper content.

For example, in a MST case if the main
device is HDCP2.2 capable but the secondary device is only 1.4 capabale
we can use Type0

Type0 content: use HDCP 1.4 or HDCP2.2 type0
Type1 content: Only use HDCP 2.2 type1

[How]
We use the "hdcp content type" property in drm. We use the
disable_type1 flag in hdcp module to select the type based on the
properties.

For updating the property we use the same logic as 1.4, but now we
consider content_type as well and update the property if the
requirements are met

Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Bhawanpreet Lakha
2019-08-16 14:49:05 -04:00
committed by Alex Deucher
parent da283469e0
commit 53e108aa99
4 changed files with 33 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -43,6 +43,7 @@
#include "amdgpu_dm.h"
#ifdef CONFIG_DRM_AMD_DC_HDCP
#include "amdgpu_dm_hdcp.h"
#include <drm/drm_hdcp.h>
#endif
#include "amdgpu_pm.h"
@@ -5581,7 +5582,7 @@ void amdgpu_dm_connector_init_helper(struct amdgpu_display_manager *dm,
&aconnector->base);
#ifdef CONFIG_DRM_AMD_DC_HDCP
if (adev->asic_type >= CHIP_RAVEN)
drm_connector_attach_content_protection_property(&aconnector->base, false);
drm_connector_attach_content_protection_property(&aconnector->base, true);
#endif
}
}
@@ -5832,6 +5833,12 @@ static bool is_content_protection_different(struct drm_connector_state *state,
{
struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
if (old_state->hdcp_content_type != state->hdcp_content_type &&
state->content_protection != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
state->content_protection = DRM_MODE_CONTENT_PROTECTION_DESIRED;
return true;
}
/* CP is being re enabled, ignore this */
if (old_state->content_protection == DRM_MODE_CONTENT_PROTECTION_ENABLED &&
state->content_protection == DRM_MODE_CONTENT_PROTECTION_DESIRED) {
@@ -5864,11 +5871,14 @@ static void update_content_protection(struct drm_connector_state *state, const s
struct hdcp_workqueue *hdcp_w)
{
struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
bool disable_type1 = state->hdcp_content_type == DRM_MODE_HDCP_CONTENT_TYPE0 ? true : false;
if (state->content_protection == DRM_MODE_CONTENT_PROTECTION_DESIRED)
hdcp_add_display(hdcp_w, aconnector->dc_link->link_index, aconnector);
else if (state->content_protection == DRM_MODE_CONTENT_PROTECTION_UNDESIRED)
if (state->content_protection == DRM_MODE_CONTENT_PROTECTION_DESIRED) {
hdcp_reset_display(hdcp_w, aconnector->dc_link->link_index);
hdcp_add_display(hdcp_w, aconnector->dc_link->link_index, aconnector, disable_type1);
} else if (state->content_protection == DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
hdcp_remove_display(hdcp_w, aconnector->dc_link->link_index, aconnector->base.index);
}
}
#endif