diff options
| author | Ramalingam C <ramalingam.c@intel.com> | 2019-05-07 21:57:38 +0530 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2019-05-09 09:44:41 +0200 |
| commit | 6498bf5800a302ef69e7f4914e727893f278bb2f (patch) | |
| tree | ee75415a66311a04fc62a8cd0105cebd6ca42d49 /drivers/gpu/drm/drm_sysfs.c | |
| parent | 0de655cae416b20ed7876adb480e5c65810274ea (diff) | |
drm: revocation check at drm subsystem
On every hdcp revocation check request SRM is read from fw file
/lib/firmware/display_hdcp_srm.bin
SRM table is parsed and stored at drm_hdcp.c, with functions exported
for the services for revocation check from drivers (which
implements the HDCP authentication)
This patch handles the HDCP1.4 and 2.2 versions of SRM table.
v2:
moved the uAPI to request_firmware_direct() [Daniel]
v3:
kdoc added. [Daniel]
srm_header unified and bit field definitions are removed. [Daniel]
locking improved. [Daniel]
vrl length violation is fixed. [Daniel]
v4:
s/__swab16/be16_to_cpu [Daniel]
be24_to_cpu is done through a global func [Daniel]
Unused variables are removed. [Daniel]
unchecked return values are dropped from static funcs [Daniel]
Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
Acked-by: Satyeshwar Singh <satyeshwar.singh@intel.com>
Reviewed-by: Daniel Vetter <daniel@ffwll.ch>
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190507162745.25600-5-ramalingam.c@intel.com
Diffstat (limited to 'drivers/gpu/drm/drm_sysfs.c')
| -rw-r--r-- | drivers/gpu/drm/drm_sysfs.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c index ecb7b33002bb..18b1ac442997 100644 --- a/drivers/gpu/drm/drm_sysfs.c +++ b/drivers/gpu/drm/drm_sysfs.c @@ -78,6 +78,7 @@ int drm_sysfs_init(void) } drm_class->devnode = drm_devnode; + drm_setup_hdcp_srm(drm_class); return 0; } @@ -90,6 +91,7 @@ void drm_sysfs_destroy(void) { if (IS_ERR_OR_NULL(drm_class)) return; + drm_teardown_hdcp_srm(drm_class); class_remove_file(drm_class, &class_attr_version.attr); class_destroy(drm_class); drm_class = NULL; |