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path: root/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c
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Diffstat (limited to 'drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c')
-rw-r--r--drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c86
1 files changed, 56 insertions, 30 deletions
diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c
index 733f22bed021..bb8ae80b37f8 100644
--- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c
+++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c
@@ -27,6 +27,11 @@
#include "hdcp.h"
+static inline uint16_t get_hdmi_rxstatus_msg_size(const uint8_t rxstatus[2])
+{
+ return HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(rxstatus[1]) << 8 | rxstatus[0];
+}
+
static inline enum mod_hdcp_status check_receiver_id_list_ready(struct mod_hdcp *hdcp)
{
uint8_t is_ready = 0;
@@ -35,8 +40,7 @@ static inline enum mod_hdcp_status check_receiver_id_list_ready(struct mod_hdcp
is_ready = HDCP_2_2_DP_RXSTATUS_READY(hdcp->auth.msg.hdcp2.rxstatus_dp) ? 1 : 0;
else
is_ready = (HDCP_2_2_HDMI_RXSTATUS_READY(hdcp->auth.msg.hdcp2.rxstatus[1]) &&
- (HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
- hdcp->auth.msg.hdcp2.rxstatus[0])) ? 1 : 0;
+ get_hdmi_rxstatus_msg_size(hdcp->auth.msg.hdcp2.rxstatus) != 0) ? 1 : 0;
return is_ready ? MOD_HDCP_STATUS_SUCCESS :
MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_NOT_READY;
}
@@ -84,15 +88,13 @@ static inline enum mod_hdcp_status check_link_integrity_failure_dp(
static enum mod_hdcp_status check_ake_cert_available(struct mod_hdcp *hdcp)
{
enum mod_hdcp_status status;
- uint16_t size;
if (is_dp_hdcp(hdcp)) {
status = MOD_HDCP_STATUS_SUCCESS;
} else {
status = mod_hdcp_read_rxstatus(hdcp);
if (status == MOD_HDCP_STATUS_SUCCESS) {
- size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
- hdcp->auth.msg.hdcp2.rxstatus[0];
+ const uint16_t size = get_hdmi_rxstatus_msg_size(hdcp->auth.msg.hdcp2.rxstatus);
status = (size == sizeof(hdcp->auth.msg.hdcp2.ake_cert)) ?
MOD_HDCP_STATUS_SUCCESS :
MOD_HDCP_STATUS_HDCP2_AKE_CERT_PENDING;
@@ -104,7 +106,6 @@ static enum mod_hdcp_status check_ake_cert_available(struct mod_hdcp *hdcp)
static enum mod_hdcp_status check_h_prime_available(struct mod_hdcp *hdcp)
{
enum mod_hdcp_status status;
- uint8_t size;
status = mod_hdcp_read_rxstatus(hdcp);
if (status != MOD_HDCP_STATUS_SUCCESS)
@@ -115,8 +116,7 @@ static enum mod_hdcp_status check_h_prime_available(struct mod_hdcp *hdcp)
MOD_HDCP_STATUS_SUCCESS :
MOD_HDCP_STATUS_HDCP2_H_PRIME_PENDING;
} else {
- size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
- hdcp->auth.msg.hdcp2.rxstatus[0];
+ const uint16_t size = get_hdmi_rxstatus_msg_size(hdcp->auth.msg.hdcp2.rxstatus);
status = (size == sizeof(hdcp->auth.msg.hdcp2.ake_h_prime)) ?
MOD_HDCP_STATUS_SUCCESS :
MOD_HDCP_STATUS_HDCP2_H_PRIME_PENDING;
@@ -128,7 +128,6 @@ out:
static enum mod_hdcp_status check_pairing_info_available(struct mod_hdcp *hdcp)
{
enum mod_hdcp_status status;
- uint8_t size;
status = mod_hdcp_read_rxstatus(hdcp);
if (status != MOD_HDCP_STATUS_SUCCESS)
@@ -139,8 +138,7 @@ static enum mod_hdcp_status check_pairing_info_available(struct mod_hdcp *hdcp)
MOD_HDCP_STATUS_SUCCESS :
MOD_HDCP_STATUS_HDCP2_PAIRING_INFO_PENDING;
} else {
- size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
- hdcp->auth.msg.hdcp2.rxstatus[0];
+ const uint16_t size = get_hdmi_rxstatus_msg_size(hdcp->auth.msg.hdcp2.rxstatus);
status = (size == sizeof(hdcp->auth.msg.hdcp2.ake_pairing_info)) ?
MOD_HDCP_STATUS_SUCCESS :
MOD_HDCP_STATUS_HDCP2_PAIRING_INFO_PENDING;
@@ -151,8 +149,7 @@ out:
static enum mod_hdcp_status poll_l_prime_available(struct mod_hdcp *hdcp)
{
- enum mod_hdcp_status status;
- uint8_t size;
+ enum mod_hdcp_status status = MOD_HDCP_STATUS_FAILURE;
uint16_t max_wait = 20; // units of ms
uint16_t num_polls = 5;
uint16_t wait_time = max_wait / num_polls;
@@ -167,8 +164,7 @@ static enum mod_hdcp_status poll_l_prime_available(struct mod_hdcp *hdcp)
if (status != MOD_HDCP_STATUS_SUCCESS)
break;
- size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
- hdcp->auth.msg.hdcp2.rxstatus[0];
+ const uint16_t size = get_hdmi_rxstatus_msg_size(hdcp->auth.msg.hdcp2.rxstatus);
status = (size == sizeof(hdcp->auth.msg.hdcp2.lc_l_prime)) ?
MOD_HDCP_STATUS_SUCCESS :
MOD_HDCP_STATUS_HDCP2_L_PRIME_PENDING;
@@ -181,7 +177,6 @@ static enum mod_hdcp_status poll_l_prime_available(struct mod_hdcp *hdcp)
static enum mod_hdcp_status check_stream_ready_available(struct mod_hdcp *hdcp)
{
enum mod_hdcp_status status;
- uint8_t size;
if (is_dp_hdcp(hdcp)) {
status = MOD_HDCP_STATUS_INVALID_OPERATION;
@@ -189,8 +184,7 @@ static enum mod_hdcp_status check_stream_ready_available(struct mod_hdcp *hdcp)
status = mod_hdcp_read_rxstatus(hdcp);
if (status != MOD_HDCP_STATUS_SUCCESS)
goto out;
- size = HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
- hdcp->auth.msg.hdcp2.rxstatus[0];
+ const uint16_t size = get_hdmi_rxstatus_msg_size(hdcp->auth.msg.hdcp2.rxstatus);
status = (size == sizeof(hdcp->auth.msg.hdcp2.repeater_auth_stream_ready)) ?
MOD_HDCP_STATUS_SUCCESS :
MOD_HDCP_STATUS_HDCP2_STREAM_READY_PENDING;
@@ -249,8 +243,7 @@ static uint8_t process_rxstatus(struct mod_hdcp *hdcp,
sizeof(hdcp->auth.msg.hdcp2.rx_id_list);
else
hdcp->auth.msg.hdcp2.rx_id_list_size =
- HDCP_2_2_HDMI_RXSTATUS_MSG_SZ_HI(hdcp->auth.msg.hdcp2.rxstatus[1]) << 8 |
- hdcp->auth.msg.hdcp2.rxstatus[0];
+ get_hdmi_rxstatus_msg_size(hdcp->auth.msg.hdcp2.rxstatus);
}
out:
return (*status == MOD_HDCP_STATUS_SUCCESS);
@@ -459,21 +452,12 @@ out:
return status;
}
-static enum mod_hdcp_status locality_check(struct mod_hdcp *hdcp,
+static enum mod_hdcp_status locality_check_sw(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
- if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
- event_ctx->unexpected_event = 1;
- goto out;
- }
-
- if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_lc_init,
- &input->lc_init_prepare, &status,
- hdcp, "lc_init_prepare"))
- goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_write_lc_init,
&input->lc_init_write, &status,
hdcp, "lc_init_write"))
@@ -489,6 +473,48 @@ static enum mod_hdcp_status locality_check(struct mod_hdcp *hdcp,
&input->l_prime_read, &status,
hdcp, "l_prime_read"))
goto out;
+out:
+ return status;
+}
+
+static enum mod_hdcp_status locality_check_fw(struct mod_hdcp *hdcp,
+ struct mod_hdcp_event_context *event_ctx,
+ struct mod_hdcp_transition_input_hdcp2 *input)
+{
+ enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
+
+ if (!mod_hdcp_execute_and_set(mod_hdcp_write_poll_read_lc_fw,
+ &input->l_prime_read, &status,
+ hdcp, "l_prime_read"))
+ goto out;
+
+out:
+ return status;
+}
+
+static enum mod_hdcp_status locality_check(struct mod_hdcp *hdcp,
+ struct mod_hdcp_event_context *event_ctx,
+ struct mod_hdcp_transition_input_hdcp2 *input)
+{
+ enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
+ const bool use_fw = hdcp->config.ddc.funcs.atomic_write_poll_read_i2c
+ && hdcp->config.ddc.funcs.atomic_write_poll_read_aux
+ && !hdcp->connection.link.adjust.hdcp2.force_sw_locality_check;
+
+ if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
+ event_ctx->unexpected_event = 1;
+ goto out;
+ }
+
+ if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_lc_init,
+ &input->lc_init_prepare, &status,
+ hdcp, "lc_init_prepare"))
+ goto out;
+
+ status = (use_fw ? locality_check_fw : locality_check_sw)(hdcp, event_ctx, input);
+ if (status != MOD_HDCP_STATUS_SUCCESS)
+ goto out;
+
if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_l_prime,
&input->l_prime_validation, &status,
hdcp, "l_prime_validation"))
generated by cgit (git 2.34.1) at 2025-07-24 07:26:00 +0000