HDCP DP 2.2 errata is part of HDCP DP 2.3 specs as well.
Anshuman Gupta (2): drm/i915/hdcp: Add DP HDCP2.2 timeout to read entire msg drm/hdcp: DP HDCP2.2 errata LC_Send_L_Prime=16
drivers/gpu/drm/i915/display/intel_dp_hdcp.c | 45 ++++++++++++++------ include/drm/drm_hdcp.h | 5 ++- 2 files changed, 36 insertions(+), 14 deletions(-)
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...
v2: - Removed redundant variable msg_can_timedout. [Ankit]
Cc: Ramalingam C ramalingam.c@intel.com Signed-off-by: Anshuman Gupta anshuman.gupta@intel.com --- drivers/gpu/drm/i915/display/intel_dp_hdcp.c | 45 ++++++++++++++------ include/drm/drm_hdcp.h | 3 ++ 2 files changed, 35 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_dp_hdcp.c b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c index 40c516e90193..8bad4b3d34dd 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_hdcp.c +++ b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c @@ -294,37 +294,39 @@ struct hdcp2_dp_msg_data { bool msg_detectable; u32 timeout; u32 timeout2; /* Added for non_paired situation */ + /* Timeout to read entire msg */ + u32 msg_read_timeout; };
static const struct hdcp2_dp_msg_data hdcp2_dp_msg_data[] = { - { HDCP_2_2_AKE_INIT, DP_HDCP_2_2_AKE_INIT_OFFSET, false, 0, 0 }, + { HDCP_2_2_AKE_INIT, DP_HDCP_2_2_AKE_INIT_OFFSET, false, 0, 0, 0}, { HDCP_2_2_AKE_SEND_CERT, DP_HDCP_2_2_AKE_SEND_CERT_OFFSET, - false, HDCP_2_2_CERT_TIMEOUT_MS, 0 }, + false, HDCP_2_2_CERT_TIMEOUT_MS, 0, HDCP_2_2_DP_CERT_READ_TIMEOUT_MS}, { HDCP_2_2_AKE_NO_STORED_KM, DP_HDCP_2_2_AKE_NO_STORED_KM_OFFSET, - false, 0, 0 }, + false, 0, 0, 0 }, { HDCP_2_2_AKE_STORED_KM, DP_HDCP_2_2_AKE_STORED_KM_OFFSET, - false, 0, 0 }, + false, 0, 0, 0 }, { HDCP_2_2_AKE_SEND_HPRIME, DP_HDCP_2_2_AKE_SEND_HPRIME_OFFSET, true, HDCP_2_2_HPRIME_PAIRED_TIMEOUT_MS, - HDCP_2_2_HPRIME_NO_PAIRED_TIMEOUT_MS }, + HDCP_2_2_HPRIME_NO_PAIRED_TIMEOUT_MS, HDCP_2_2_DP_HPRIME_READ_TIMEOUT_MS}, { HDCP_2_2_AKE_SEND_PAIRING_INFO, DP_HDCP_2_2_AKE_SEND_PAIRING_INFO_OFFSET, true, - HDCP_2_2_PAIRING_TIMEOUT_MS, 0 }, - { HDCP_2_2_LC_INIT, DP_HDCP_2_2_LC_INIT_OFFSET, false, 0, 0 }, + HDCP_2_2_PAIRING_TIMEOUT_MS, 0, HDCP_2_2_DP_PAIRING_READ_TIMEOUT_MS }, + { HDCP_2_2_LC_INIT, DP_HDCP_2_2_LC_INIT_OFFSET, false, 0, 0, 0 }, { HDCP_2_2_LC_SEND_LPRIME, DP_HDCP_2_2_LC_SEND_LPRIME_OFFSET, - false, HDCP_2_2_DP_LPRIME_TIMEOUT_MS, 0 }, + false, HDCP_2_2_DP_LPRIME_TIMEOUT_MS, 0, 0 }, { HDCP_2_2_SKE_SEND_EKS, DP_HDCP_2_2_SKE_SEND_EKS_OFFSET, false, - 0, 0 }, + 0, 0, 0 }, { HDCP_2_2_REP_SEND_RECVID_LIST, DP_HDCP_2_2_REP_SEND_RECVID_LIST_OFFSET, true, - HDCP_2_2_RECVID_LIST_TIMEOUT_MS, 0 }, + HDCP_2_2_RECVID_LIST_TIMEOUT_MS, 0, 0 }, { HDCP_2_2_REP_SEND_ACK, DP_HDCP_2_2_REP_SEND_ACK_OFFSET, false, - 0, 0 }, + 0, 0, 0 }, { HDCP_2_2_REP_STREAM_MANAGE, DP_HDCP_2_2_REP_STREAM_MANAGE_OFFSET, false, - 0, 0 }, + 0, 0, 0}, { HDCP_2_2_REP_STREAM_READY, DP_HDCP_2_2_REP_STREAM_READY_OFFSET, - false, HDCP_2_2_STREAM_READY_TIMEOUT_MS, 0 }, + false, HDCP_2_2_STREAM_READY_TIMEOUT_MS, 0, 0 }, /* local define to shovel this through the write_2_2 interface */ #define HDCP_2_2_ERRATA_DP_STREAM_TYPE 50 { HDCP_2_2_ERRATA_DP_STREAM_TYPE, @@ -513,6 +515,8 @@ int intel_dp_hdcp2_read_msg(struct intel_digital_port *dig_port, u8 *byte = buf; ssize_t ret, bytes_to_recv, len; const struct hdcp2_dp_msg_data *hdcp2_msg_data; + ktime_t msg_end; + bool msg_expired;
hdcp2_msg_data = get_hdcp2_dp_msg_data(msg_id); if (!hdcp2_msg_data) @@ -539,6 +543,11 @@ int intel_dp_hdcp2_read_msg(struct intel_digital_port *dig_port, len = bytes_to_recv > DP_AUX_MAX_PAYLOAD_BYTES ? DP_AUX_MAX_PAYLOAD_BYTES : bytes_to_recv;
+ /* Entire msg read timeout since initiate of msg read */ + if (bytes_to_recv == size - 1 && hdcp2_msg_data->msg_read_timeout > 0) + msg_end = ktime_add_ms(ktime_get_raw(), + hdcp2_msg_data->msg_read_timeout); + ret = drm_dp_dpcd_read(&dig_port->dp.aux, offset, (void *)byte, len); if (ret < 0) { @@ -551,6 +560,16 @@ int intel_dp_hdcp2_read_msg(struct intel_digital_port *dig_port, byte += ret; offset += ret; } + + if (hdcp2_msg_data->msg_read_timeout > 0) { + msg_expired = ktime_after(ktime_get_raw(), msg_end); + if (msg_expired) { + drm_dbg_kms(&i915->drm, "msg_id %d, entire msg read timeout(mSec): %d\n", + msg_id, hdcp2_msg_data->msg_read_timeout); + return -ETIMEDOUT; + } + } + byte = buf; *byte = msg_id;
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
LGTM.
Reviewed-by: Ankit Nautiyal ankit.k.nautiyal@intel.com
On 3/24/2021 5:00 PM, Anshuman Gupta wrote:
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...
v2:
- Removed redundant variable msg_can_timedout. [Ankit]
Cc: Ramalingam C ramalingam.c@intel.com Signed-off-by: Anshuman Gupta anshuman.gupta@intel.com
drivers/gpu/drm/i915/display/intel_dp_hdcp.c | 45 ++++++++++++++------ include/drm/drm_hdcp.h | 3 ++ 2 files changed, 35 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_dp_hdcp.c b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c index 40c516e90193..8bad4b3d34dd 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_hdcp.c +++ b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c @@ -294,37 +294,39 @@ struct hdcp2_dp_msg_data { bool msg_detectable; u32 timeout; u32 timeout2; /* Added for non_paired situation */
/* Timeout to read entire msg */
u32 msg_read_timeout; };
static const struct hdcp2_dp_msg_data hdcp2_dp_msg_data[] = {
- { HDCP_2_2_AKE_INIT, DP_HDCP_2_2_AKE_INIT_OFFSET, false, 0, 0 },
- { HDCP_2_2_AKE_INIT, DP_HDCP_2_2_AKE_INIT_OFFSET, false, 0, 0, 0}, { HDCP_2_2_AKE_SEND_CERT, DP_HDCP_2_2_AKE_SEND_CERT_OFFSET,
false, HDCP_2_2_CERT_TIMEOUT_MS, 0 },
false, HDCP_2_2_CERT_TIMEOUT_MS, 0, HDCP_2_2_DP_CERT_READ_TIMEOUT_MS},
false, 0, 0 },
false, 0, 0, 0 },
false, 0, 0 },
false, 0, 0, 0 },
HDCP_2_2_HPRIME_NO_PAIRED_TIMEOUT_MS },
HDCP_2_2_HPRIME_NO_PAIRED_TIMEOUT_MS, HDCP_2_2_DP_HPRIME_READ_TIMEOUT_MS},
HDCP_2_2_PAIRING_TIMEOUT_MS, 0 },- { HDCP_2_2_LC_INIT, DP_HDCP_2_2_LC_INIT_OFFSET, false, 0, 0 },
HDCP_2_2_PAIRING_TIMEOUT_MS, 0, HDCP_2_2_DP_PAIRING_READ_TIMEOUT_MS },- { HDCP_2_2_LC_INIT, DP_HDCP_2_2_LC_INIT_OFFSET, false, 0, 0, 0 }, { HDCP_2_2_LC_SEND_LPRIME, DP_HDCP_2_2_LC_SEND_LPRIME_OFFSET,
false, HDCP_2_2_DP_LPRIME_TIMEOUT_MS, 0 },
false, HDCP_2_2_DP_LPRIME_TIMEOUT_MS, 0, 0 },
0, 0 },
0, 0, 0 },
HDCP_2_2_RECVID_LIST_TIMEOUT_MS, 0 },
HDCP_2_2_RECVID_LIST_TIMEOUT_MS, 0, 0 },
0, 0 },
0, 0, 0 },
0, 0 },
0, 0, 0},
false, HDCP_2_2_STREAM_READY_TIMEOUT_MS, 0 },
false, HDCP_2_2_STREAM_READY_TIMEOUT_MS, 0, 0 },@@ -513,6 +515,8 @@ int intel_dp_hdcp2_read_msg(struct intel_digital_port *dig_port, u8 *byte = buf; ssize_t ret, bytes_to_recv, len; const struct hdcp2_dp_msg_data *hdcp2_msg_data;
ktime_t msg_end;
bool msg_expired;
hdcp2_msg_data = get_hdcp2_dp_msg_data(msg_id); if (!hdcp2_msg_data)
@@ -539,6 +543,11 @@ int intel_dp_hdcp2_read_msg(struct intel_digital_port *dig_port, len = bytes_to_recv > DP_AUX_MAX_PAYLOAD_BYTES ? DP_AUX_MAX_PAYLOAD_BYTES : bytes_to_recv;
/* Entire msg read timeout since initiate of msg read */if (bytes_to_recv == size - 1 && hdcp2_msg_data->msg_read_timeout > 0)msg_end = ktime_add_ms(ktime_get_raw(),hdcp2_msg_data->msg_read_timeout);- ret = drm_dp_dpcd_read(&dig_port->dp.aux, offset, (void *)byte, len); if (ret < 0) {
@@ -551,6 +560,16 @@ int intel_dp_hdcp2_read_msg(struct intel_digital_port *dig_port, byte += ret; offset += ret; }
- if (hdcp2_msg_data->msg_read_timeout > 0) {
msg_expired = ktime_after(ktime_get_raw(), msg_end);if (msg_expired) {drm_dbg_kms(&i915->drm, "msg_id %d, entire msg read timeout(mSec): %d\n",msg_id, hdcp2_msg_data->msg_read_timeout);return -ETIMEDOUT;}- }
- byte = buf; *byte = msg_id;
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
On Thu, 25 Mar 2021, "Nautiyal, Ankit K" ankit.k.nautiyal@intel.com wrote:
LGTM.
Reviewed-by: Ankit Nautiyal ankit.k.nautiyal@intel.com
Both patches pushed to drm-intel-next with Maxime's irc ack.
BR, Jani.
On 3/24/2021 5:00 PM, Anshuman Gupta wrote:
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...
v2:
- Removed redundant variable msg_can_timedout. [Ankit]
Cc: Ramalingam C ramalingam.c@intel.com Signed-off-by: Anshuman Gupta anshuman.gupta@intel.com
drivers/gpu/drm/i915/display/intel_dp_hdcp.c | 45 ++++++++++++++------ include/drm/drm_hdcp.h | 3 ++ 2 files changed, 35 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_dp_hdcp.c b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c index 40c516e90193..8bad4b3d34dd 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_hdcp.c +++ b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c @@ -294,37 +294,39 @@ struct hdcp2_dp_msg_data { bool msg_detectable; u32 timeout; u32 timeout2; /* Added for non_paired situation */
/* Timeout to read entire msg */
u32 msg_read_timeout; };
static const struct hdcp2_dp_msg_data hdcp2_dp_msg_data[] = {
- { HDCP_2_2_AKE_INIT, DP_HDCP_2_2_AKE_INIT_OFFSET, false, 0, 0 },
- { HDCP_2_2_AKE_INIT, DP_HDCP_2_2_AKE_INIT_OFFSET, false, 0, 0, 0}, { HDCP_2_2_AKE_SEND_CERT, DP_HDCP_2_2_AKE_SEND_CERT_OFFSET,
false, HDCP_2_2_CERT_TIMEOUT_MS, 0 },
false, HDCP_2_2_CERT_TIMEOUT_MS, 0, HDCP_2_2_DP_CERT_READ_TIMEOUT_MS},
false, 0, 0 },
false, 0, 0, 0 },
false, 0, 0 },
false, 0, 0, 0 },
HDCP_2_2_HPRIME_NO_PAIRED_TIMEOUT_MS },
HDCP_2_2_HPRIME_NO_PAIRED_TIMEOUT_MS, HDCP_2_2_DP_HPRIME_READ_TIMEOUT_MS},
HDCP_2_2_PAIRING_TIMEOUT_MS, 0 },- { HDCP_2_2_LC_INIT, DP_HDCP_2_2_LC_INIT_OFFSET, false, 0, 0 },
HDCP_2_2_PAIRING_TIMEOUT_MS, 0, HDCP_2_2_DP_PAIRING_READ_TIMEOUT_MS },- { HDCP_2_2_LC_INIT, DP_HDCP_2_2_LC_INIT_OFFSET, false, 0, 0, 0 }, { HDCP_2_2_LC_SEND_LPRIME, DP_HDCP_2_2_LC_SEND_LPRIME_OFFSET,
false, HDCP_2_2_DP_LPRIME_TIMEOUT_MS, 0 },
false, HDCP_2_2_DP_LPRIME_TIMEOUT_MS, 0, 0 },
0, 0 },
0, 0, 0 },
HDCP_2_2_RECVID_LIST_TIMEOUT_MS, 0 },
HDCP_2_2_RECVID_LIST_TIMEOUT_MS, 0, 0 },
0, 0 },
0, 0, 0 },
0, 0 },
0, 0, 0},
false, HDCP_2_2_STREAM_READY_TIMEOUT_MS, 0 },
false, HDCP_2_2_STREAM_READY_TIMEOUT_MS, 0, 0 },@@ -513,6 +515,8 @@ int intel_dp_hdcp2_read_msg(struct intel_digital_port *dig_port, u8 *byte = buf; ssize_t ret, bytes_to_recv, len; const struct hdcp2_dp_msg_data *hdcp2_msg_data;
ktime_t msg_end;
bool msg_expired;
hdcp2_msg_data = get_hdcp2_dp_msg_data(msg_id); if (!hdcp2_msg_data)
@@ -539,6 +543,11 @@ int intel_dp_hdcp2_read_msg(struct intel_digital_port *dig_port, len = bytes_to_recv > DP_AUX_MAX_PAYLOAD_BYTES ? DP_AUX_MAX_PAYLOAD_BYTES : bytes_to_recv;
/* Entire msg read timeout since initiate of msg read */if (bytes_to_recv == size - 1 && hdcp2_msg_data->msg_read_timeout > 0)msg_end = ktime_add_ms(ktime_get_raw(),hdcp2_msg_data->msg_read_timeout);- ret = drm_dp_dpcd_read(&dig_port->dp.aux, offset, (void *)byte, len); if (ret < 0) {
@@ -551,6 +560,16 @@ int intel_dp_hdcp2_read_msg(struct intel_digital_port *dig_port, byte += ret; offset += ret; }
- if (hdcp2_msg_data->msg_read_timeout > 0) {
msg_expired = ktime_after(ktime_get_raw(), msg_end);if (msg_expired) {drm_dbg_kms(&i915->drm, "msg_id %d, entire msg read timeout(mSec): %d\n",msg_id, hdcp2_msg_data->msg_read_timeout);return -ETIMEDOUT;}- }
- byte = buf; *byte = msg_id;
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
Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
Fix LC_Send_L_Prime message timeout to 16 as documented in DP HDCP 2.2 errata page 3.
https://www.digital-cp.com/sites/default/files/HDCP%202_2_DisplayPort_Errata...
Cc: Ramalingam C ramalingam.c@intel.com Reviewed-by: Ankit Nautiyal ankit.k.nautiyal@intel.com Signed-off-by: Anshuman Gupta anshuman.gupta@intel.com --- include/drm/drm_hdcp.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h index 2b165a0f434f..0b1111e3228e 100644 --- a/include/drm/drm_hdcp.h +++ b/include/drm/drm_hdcp.h @@ -231,7 +231,7 @@ struct hdcp2_rep_stream_ready { #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_DP_LPRIME_TIMEOUT_MS 16 #define HDCP_2_2_RECVID_LIST_TIMEOUT_MS 3000 #define HDCP_2_2_STREAM_READY_TIMEOUT_MS 100
On Wed, 24 Mar 2021, Anshuman Gupta anshuman.gupta@intel.com wrote:
HDCP DP 2.2 errata is part of HDCP DP 2.3 specs as well.
Anshuman Gupta (2): drm/i915/hdcp: Add DP HDCP2.2 timeout to read entire msg drm/hdcp: DP HDCP2.2 errata LC_Send_L_Prime=16
drivers/gpu/drm/i915/display/intel_dp_hdcp.c | 45 ++++++++++++++------ include/drm/drm_hdcp.h | 5 ++- 2 files changed, 36 insertions(+), 14 deletions(-)
Maarten, Maxime, Thomas -
Can I get an ack for merging this via drm-intel-next, please?
BR, Jani.
On Thu, 25 Mar 2021, Jani Nikula jani.nikula@linux.intel.com wrote:
On Wed, 24 Mar 2021, Anshuman Gupta anshuman.gupta@intel.com wrote:
HDCP DP 2.2 errata is part of HDCP DP 2.3 specs as well.
Anshuman Gupta (2): drm/i915/hdcp: Add DP HDCP2.2 timeout to read entire msg drm/hdcp: DP HDCP2.2 errata LC_Send_L_Prime=16
drivers/gpu/drm/i915/display/intel_dp_hdcp.c | 45 ++++++++++++++------ include/drm/drm_hdcp.h | 5 ++- 2 files changed, 36 insertions(+), 14 deletions(-)
Maarten, Maxime, Thomas -
Can I get an ack for merging this via drm-intel-next, please?
Ping! :)
BR, Jani.
dri-devel@lists.freedesktop.org
-
Anshuman Gupta -
Jani Nikula -
Nautiyal, Ankit K