[Intel-gfx] [PATCH v8 6/6] drm/hdcp: reference for srm file format

[Pekka Paalanen]

On Fri,  5 Jul 2019 06:16:42 +0530
Ramalingam C <ramalingam.c at intel.com> wrote:

> In the kernel documentation, HDCP specifications links are shared as a
> reference for SRM table format.
> 
> Signed-off-by: Ramalingam C <ramalingam.c at intel.com>
> ---
>  drivers/gpu/drm/drm_hdcp.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/gpu/drm/drm_hdcp.c b/drivers/gpu/drm/drm_hdcp.c
> index 77433ee3d652..803bf8283b83 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.
>   */

Hi,

this look good, publicly accessible spec links even. I'm happy with
this, but I repeat that the Weston work[1] does not directly prove this
UAPI (perhaps not necessary either?).


[1] https://gitlab.freedesktop.org/wayland/weston/merge_requests/48

Thanks,
pq
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