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drm/amd/display: call psp set/get interfaces

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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.Lakha@amd.com>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Bhawanpreet Lakha 2019-12-12 16:38:38 -05:00 committed by Alex Deucher
parent f4406d6fb2
commit 1746d5a1d1
1 changed files with 49 additions and 1 deletions
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50
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
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@ -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;
}