Call the cmd ids for set/get srm according to the sysfs call
v2: Use define for the magic number
Signed-off-by: Bhawanpreet Lakha <bhawanpreet.la...@amd.com>
Reviewed-by: Rodrigo Siqueira <rodrigo.sique...@amd.com>
---
.../amd/display/amdgpu_dm/amdgpu_dm_hdcp.c | 50 ++++++++++++++++++-
1 file changed, 49 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
index e6a89cd7ed57..1768a33b1dc3 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
@@ -30,6 +30,11 @@
#include <drm/drm_hdcp.h>
#include "hdcp_psp.h"
+/*
+ * If the SRM version being loaded is less than or equal to the
+ * currently loaded SRM, psp will return 0xFFFF as the version
+ */
+#define PSP_SRM_VERSION_MAX 0xFFFF
static bool
lp_write_i2c(void *handle, uint32_t address, const uint8_t *data, uint32_t
size)
@@ -71,11 +76,54 @@ lp_read_dpcd(void *handle, uint32_t address, uint8_t *data,
uint32_t size)
static uint8_t *psp_get_srm(struct psp_context *psp, uint32_t *srm_version,
uint32_t *srm_size)
{
- return NULL;
+
+ struct ta_hdcp_shared_memory *hdcp_cmd;
+
+ if (!psp->hdcp_context.hdcp_initialized) {
+ DRM_WARN("Failed to get hdcp srm. HDCP TA is not initialized.");
+ return NULL;
+ }
+
+ hdcp_cmd = (struct ta_hdcp_shared_memory
*)psp->hdcp_context.hdcp_shared_buf;
+ memset(hdcp_cmd, 0, sizeof(struct ta_hdcp_shared_memory));
+
+ hdcp_cmd->cmd_id = TA_HDCP_COMMAND__HDCP_GET_SRM;
+ psp_hdcp_invoke(psp, hdcp_cmd->cmd_id);
+
+ if (hdcp_cmd->hdcp_status != TA_HDCP_STATUS__SUCCESS)
+ return NULL;
+
+ *srm_version = hdcp_cmd->out_msg.hdcp_get_srm.srm_version;
+ *srm_size = hdcp_cmd->out_msg.hdcp_get_srm.srm_buf_size;
+
+
+ return hdcp_cmd->out_msg.hdcp_get_srm.srm_buf;
}
static int psp_set_srm(struct psp_context *psp, uint8_t *srm, uint32_t
srm_size, uint32_t *srm_version)
{
+
+ struct ta_hdcp_shared_memory *hdcp_cmd;
+
+ if (!psp->hdcp_context.hdcp_initialized) {
+ DRM_WARN("Failed to get hdcp srm. HDCP TA is not initialized.");
+ return -EINVAL;
+ }
+
+ hdcp_cmd = (struct ta_hdcp_shared_memory
*)psp->hdcp_context.hdcp_shared_buf;
+ memset(hdcp_cmd, 0, sizeof(struct ta_hdcp_shared_memory));
+
+ memcpy(hdcp_cmd->in_msg.hdcp_set_srm.srm_buf, srm, srm_size);
+ hdcp_cmd->in_msg.hdcp_set_srm.srm_buf_size = srm_size;
+ hdcp_cmd->cmd_id = TA_HDCP_COMMAND__HDCP_SET_SRM;
+
+ psp_hdcp_invoke(psp, hdcp_cmd->cmd_id);
+
+ if (hdcp_cmd->hdcp_status != TA_HDCP_STATUS__SUCCESS ||
hdcp_cmd->out_msg.hdcp_set_srm.valid_signature != 1 ||
+ hdcp_cmd->out_msg.hdcp_set_srm.srm_version == PSP_SRM_VERSION_MAX)
+ return -EINVAL;
+
+ *srm_version = hdcp_cmd->out_msg.hdcp_set_srm.srm_version;
return 0;
}
--
2.17.1
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