evie/android_kernel_oneplus_msm8998
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msm: mdss: hdmi: add dynamic encryption enable support

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Implement qseecomm API to send command to TZ to enable/disable
encryption based on hdcp status. Enable encryption when hdcp
part 1 is successful and disable it when cable is disconnected
or authentication fails.

Change-Id: Ia5e1a5927dad36abc3093b16638879be823c84df
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>
This commit is contained in:
Ajay Singh Parmar 2015-11-22 18:06:34 -08:00 • committed by David Keitel
parent 178d4d6f8b
commit b3e68382ff
3 changed files with 55 additions and 0 deletions
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46
drivers/misc/hdcp.c
View file

@ -64,6 +64,7 @@
#define REPEATER_AUTH_STREAM_MANAGE_MESSAGE_ID 16
#define REPEATER_AUTH_STREAM_READY_MESSAGE_ID 17
#define HDCP1_SET_KEY_MESSAGE_ID 202
#define HDCP1_SET_ENC_MESSAGE_ID 205
#define BITS_8_IN_BYTES 1
#define BITS_16_IN_BYTES 2
@ -316,6 +317,16 @@ struct __attribute__ ((__packed__)) repeater_info_struct {
uint32_t ReceiverIDListLen;
};
struct __attribute__ ((__packed__)) hdcp1_set_enc_req {
uint32_t commandid;
uint32_t enable;
};
struct __attribute__ ((__packed__)) hdcp1_set_enc_rsp {
uint32_t commandid;
uint32_t ret;
};
/*
* struct hdcp_lib_handle - handle for hdcp client
* @qseecom_handle - for sending commands to qseecom
@ -1362,6 +1373,41 @@ int hdcp1_set_keys(uint32_t *aksv_msb, uint32_t *aksv_lsb)
return 0;
}
int hdcp1_set_enc(bool enable)
{
int rc = 0;
struct hdcp1_set_enc_req *set_enc_req;
struct hdcp1_set_enc_rsp *set_enc_rsp;
if (!hdcp1_supported || !hdcp1_handle)
return -EINVAL;
/* set keys and request aksv */
set_enc_req = (struct hdcp1_set_enc_req *)hdcp1_handle->sbuf;
set_enc_req->commandid = HDCP1_SET_ENC_MESSAGE_ID;
set_enc_req->enable = enable;
set_enc_rsp = (struct hdcp1_set_enc_rsp *)(hdcp1_handle->sbuf +
QSEECOM_ALIGN(sizeof(struct hdcp1_set_enc_req)));
rc = qseecom_send_command(hdcp1_handle,
set_enc_req, QSEECOM_ALIGN(sizeof(struct hdcp1_set_enc_req)),
set_enc_rsp, QSEECOM_ALIGN(sizeof(struct hdcp1_set_enc_rsp)));
if (rc < 0) {
pr_err("qseecom cmd failed err=%d\n", rc);
return -EINVAL;
}
rc = set_enc_rsp->ret;
if (rc) {
pr_err("enc cmd failed, rsp=%d\n",
set_enc_rsp->ret);
return -EINVAL;
}
pr_debug("success\n");
return 0;
}
int hdcp_library_register(struct hdcp_register_data *data)
{
int rc = 0;

8
drivers/video/fbdev/msm/mdss_hdmi_tx.c
View file

@ -1359,8 +1359,16 @@ static void hdmi_tx_hdcp_cb_work(struct work_struct *work)
rc = hdmi_tx_config_avmute(hdmi_ctrl, false);
hdmi_tx_set_audio_switch_node(hdmi_ctrl, 1);
}
if (hdmi_ctrl->hdcp1_use_sw_keys && hdmi_ctrl->hdcp14_present)
hdcp1_set_enc(true);
break;
case HDCP_STATE_AUTH_FAIL:
if (hdmi_ctrl->hdcp1_use_sw_keys && hdmi_ctrl->hdcp14_present) {
if (hdmi_ctrl->auth_state)
hdcp1_set_enc(false);
}
hdmi_ctrl->auth_state = false;
if (hdmi_tx_is_encryption_set(hdmi_ctrl) ||

1
include/linux/hdcp_qseecom.h
View file

@ -117,5 +117,6 @@ int hdcp_library_register(struct hdcp_register_data *data);
void hdcp_library_deregister(void *phdcpcontext);
bool hdcp1_check_if_supported_load_app(void);
int hdcp1_set_keys(uint32_t *aksv_msb, uint32_t *aksv_lsb);
int hdcp1_set_enc(bool enable);
#endif /* __HDCP_QSEECOM_H */