diff options
| author | Anshuman Gupta <anshuman.gupta@intel.com> | 2021-03-24 17:00:11 +0530 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2021-03-31 14:27:24 +0300 |
| commit | 989cf9a93892409cf8e84c30c0faaa522ac83807 (patch) | |
| tree | a8c6eb7992c9e81a572415759e77eebd75b37d34 /include/drm | |
| parent | 04b6603d13be541df73634a18218f34a37820285 (diff) | |
| download | linux-stable-989cf9a93892409cf8e84c30c0faaa522ac83807.tar.gz linux-stable-989cf9a93892409cf8e84c30c0faaa522ac83807.tar.bz2 linux-stable-989cf9a93892409cf8e84c30c0faaa522ac83807.zip | |
drm/i915/hdcp: Add DP HDCP2.2 timeout to read entire msg
As documented in HDCP 2.2 DP Errata spec transmitter should abort the
authentication protocol in case transmitter has not received the
entire {AKE_Send_Cert, AKE_Send_H_prime, AKE_Send_Paring_Info} msg
within {110,7,5} miliseconds.
Adding above msg timeout values and aborting the HDCP authentication
in case it timedout to read entire msg.
https://www.digital-cp.com/sites/default/files/HDCP%202_2_DisplayPort_Errata_v3_0.pdf
v2:
- Removed redundant variable msg_can_timedout. [Ankit]
Cc: Ramalingam C <ramalingam.c@intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210324113012.7564-2-anshuman.gupta@intel.com
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_hdcp.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h index ac22c246542a..2b165a0f434f 100644 --- a/include/drm/drm_hdcp.h +++ b/include/drm/drm_hdcp.h @@ -224,9 +224,12 @@ struct hdcp2_rep_stream_ready { /* HDCP2.2 TIMEOUTs in mSec */ #define HDCP_2_2_CERT_TIMEOUT_MS 100 +#define HDCP_2_2_DP_CERT_READ_TIMEOUT_MS 110 #define HDCP_2_2_HPRIME_NO_PAIRED_TIMEOUT_MS 1000 #define HDCP_2_2_HPRIME_PAIRED_TIMEOUT_MS 200 +#define HDCP_2_2_DP_HPRIME_READ_TIMEOUT_MS 7 #define HDCP_2_2_PAIRING_TIMEOUT_MS 200 +#define HDCP_2_2_DP_PAIRING_READ_TIMEOUT_MS 5 #define HDCP_2_2_HDMI_LPRIME_TIMEOUT_MS 20 #define HDCP_2_2_DP_LPRIME_TIMEOUT_MS 7 #define HDCP_2_2_RECVID_LIST_TIMEOUT_MS 3000 |