From: Ramalingam C Date: Thu, 1 Aug 2019 11:41:19 +0000 (+0530) Subject: drm/hdcp: reference for srm file format X-Git-Tag: v5.4-rc1~106^2~18^2~17 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=bc0380b9e5587d0c3fd207f16c53a101a9ea81dd;p=linux.git 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 Reviewed-by: Shashank Sharma Acked-by: Pekka Paalanen Acked-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/320968/?series=57232&rev=14 --- 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 @@ static void drm_hdcp_request_srm(struct drm_device *drm_dev) * * 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. */