/*-----------------------------------------------------------------------------
* Function: hdcp_ioctl
*-----------------------------------------------------------------------------
*/
long hdcp_ioctl(struct file *fd, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
switch (cmd) {
case HDCP_ENABLE:
return hdcp_enable_ctl(argp);
case HDCP_DISABLE:
return hdcp_disable_ctl();
case HDCP_ENCRYPT_KEY:
return hdcp_encrypt_key_ctl(argp);
case HDCP_QUERY_STATUS:
return hdcp_query_status_ctl(argp);
case HDCP_WAIT_EVENT:
return hdcp_wait_event_ctl(argp);
case HDCP_DONE:
return hdcp_done_ctl(argp);
default:
return -ENOTTY;
} /* End switch */
}
static long hdcp_ioctl(struct file *fd, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
struct hdcp_wait_control ctrl;
uint32_t status;
if (!fd) {
HDCP_ERR("%s null pointer\n", __func__);
return -EINVAL;
}
HDCP_DBG("%s\n", __func__);
switch (cmd) {
case HDCP_WAIT_EVENT:
if (copy_from_user(&ctrl, argp,
sizeof(struct hdcp_wait_control))) {
HDCP_ERR("HDCP: Error copying from user space"
" - wait ioctl");
return -EFAULT;
}
/* Do not allow re-entrance for this ioctl */
mutex_lock(&hdcp.re_entrant_lock);
if (hdcp.re_entrance_flag == false) {
hdcp.re_entrance_flag = true;
mutex_unlock(&hdcp.re_entrant_lock);
hdcp_auth_wait_event_ctl(&ctrl);
mutex_lock(&hdcp.re_entrant_lock);
hdcp.re_entrance_flag = false;
mutex_unlock(&hdcp.re_entrant_lock);
} else {
mutex_unlock(&hdcp.re_entrant_lock);
ctrl.event = HDCP_EVENT_EXIT;
}
/* Store output data to output pointer */
if (copy_to_user(argp, &ctrl,
sizeof(struct hdcp_wait_control))) {
HDCP_ERR("HDCP: Error copying to user space -"
" wait ioctl");
return -EFAULT;
}
break;
case HDCP_QUERY_STATUS:
hdcp_query_status_ctl(&status);
/* Store output data to output pointer */
if (copy_to_user(argp, &status,
sizeof(uint32_t))) {
HDCP_ERR("HDCP: Error copying to user space -"
"query status ioctl");
return -EFAULT;
}
break;
case HDCP_DONE:
if (copy_from_user(&status, argp,
sizeof(uint32_t))) {
HDCP_ERR("HDCP: Error copying from user space"
" - done ioctl");
return -EFAULT;
}
return hdcp_user_space_done_ctl(&status);
default:
return -ENOTTY;
} /* End switch */
return 0;
}
