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authorRamalingam C <ramalingam.c@intel.com>2019-08-01 14:41:19 +0300
committerRamalingam C <ramalingam.c@intel.com>2019-08-06 10:48:42 +0300
commitbc0380b9e5587d0c3fd207f16c53a101a9ea81dd (patch)
treeb0d3206153db2418c2f78e9ca7d7297267d3e188 /drivers/gpu
parenta41e71f4e78819403859950c34a638655cfd7da3 (diff)
downloadlinux-bc0380b9e5587d0c3fd207f16c53a101a9ea81dd.tar.xz
drm/hdcp: reference for srm file format
In the kernel documentation, HDCP specifications links are shared as a reference for SRM table format. v2: Fixed small nits. [Shashank] Signed-off-by: Ramalingam C <ramalingam.c@intel.com> Reviewed-by: Shashank Sharma <shashank.sharma@intel.com> Acked-by: Pekka Paalanen <pekka.paalanen@collabora.com> Acked-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/320968/?series=57232&rev=14
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/drm_hdcp.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_hdcp.c b/drivers/gpu/drm/drm_hdcp.c
index 77433ee3d652..9191633a3c43 100644
--- a/drivers/gpu/drm/drm_hdcp.c
+++ b/drivers/gpu/drm/drm_hdcp.c
@@ -271,6 +271,13 @@ exit:
*
* SRM should be presented in the name of "display_hdcp_srm.bin".
*
+ * Format of the SRM table, that userspace needs to write into the binary file,
+ * is defined at:
+ * 1. Renewability chapter on 55th page of HDCP 1.4 specification
+ * https://www.digital-cp.com/sites/default/files/specifications/HDCP%20Specification%20Rev1_4_Secure.pdf
+ * 2. Renewability chapter on 63rd page of HDCP 2.2 specification
+ * https://www.digital-cp.com/sites/default/files/specifications/HDCP%20on%20HDMI%20Specification%20Rev2_2_Final1.pdf
+ *
* Returns:
* TRUE on any of the KSV is revoked, else FALSE.
*/