system/stack/include/hidh_api.h

/******************************************************************************
 *
 *  Copyright (C) 2002-2012 Broadcom Corporation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at:
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 ******************************************************************************/
#ifndef HIDH_API_H
#define HIDH_API_H

#include "hiddefs.h"
#include "sdp_api.h"

/*****************************************************************************
**  Constants
*****************************************************************************/

enum {
    HID_SDP_NO_SERV_UUID = (SDP_ILLEGAL_PARAMETER+1),
    HID_SDP_MANDATORY_MISSING
};

/* Attributes mask values to be used in HID_HostAddDev API */
#define HID_VIRTUAL_CABLE        0x0001
#define HID_NORMALLY_CONNECTABLE 0x0002
#define HID_RECONN_INIT          0x0004
#define HID_SDP_DISABLE          0x0008
#define HID_BATTERY_POWER        0x0010
#define HID_REMOTE_WAKE          0x0020
#define HID_SUP_TOUT_AVLBL       0x0040
#define HID_SSR_MAX_LATENCY      0x0080
#define HID_SSR_MIN_TOUT         0x0100

#define HID_SEC_REQUIRED         0x8000
#define HID_ATTR_MASK_IGNORE     0


/*****************************************************************************
**  Type Definitions
*****************************************************************************/

typedef void (tHID_HOST_SDP_CALLBACK) (UINT16 result, UINT16 attr_mask,
                                       tHID_DEV_SDP_INFO *sdp_rec );

/* HID-HOST returns the events in the following table to the application via tHID_HOST_DEV_CALLBACK
HID_HDEV_EVT_OPEN   Connected to device with Interrupt and Control Channels in OPEN state.
                                                        Data = NA
HID_HDEV_EVT_CLOSE  Connection with device is closed.   Data=reason code.
HID_HDEV_EVT_RETRYING   Lost connection is being re-connected.
                                                        Data=Retrial number
HID_HDEV_EVT_IN_REPORT  Device sent an input report     Data=Report Type pdata= pointer to BT_HDR
                                                        (GKI buffer having report data.)
HID_HDEV_EVT_HANDSHAKE  Device sent SET_REPORT          Data=Result-code pdata=NA.
HID_HDEV_EVT_VC_UNPLUG  Device sent Virtual Unplug      Data=NA. pdata=NA.
*/

enum
{
    HID_HDEV_EVT_OPEN,
    HID_HDEV_EVT_CLOSE,
    HID_HDEV_EVT_RETRYING,
    HID_HDEV_EVT_INTR_DATA,
    HID_HDEV_EVT_INTR_DATC,
    HID_HDEV_EVT_CTRL_DATA,
    HID_HDEV_EVT_CTRL_DATC,
    HID_HDEV_EVT_HANDSHAKE,
    HID_HDEV_EVT_VC_UNPLUG
};
typedef void (tHID_HOST_DEV_CALLBACK) (UINT8 dev_handle,
                                       BD_ADDR addr,
                                       UINT8 event, /* Event from HID-DEVICE. */
                                       UINT32 data, /* Integer data corresponding to the event.*/
                                       BT_HDR *p_buf ); /* Pointer data corresponding to the event. */


/*****************************************************************************
**  External Function Declarations
*****************************************************************************/
#ifdef __cplusplus
extern "C"
{
#endif

/*******************************************************************************
**
** Function         HID_HostGetSDPRecord
**
** Description      This function reads the device SDP record.
**
** Returns          tHID_STATUS
**
*******************************************************************************/
extern tHID_STATUS HID_HostGetSDPRecord (BD_ADDR addr,
                                         tSDP_DISCOVERY_DB *p_db,
                                         UINT32 db_len,
                                         tHID_HOST_SDP_CALLBACK *sdp_cback );

/*******************************************************************************
**
** Function         HID_HostRegister
**
** Description      This function registers HID-Host with lower layers.
**
** Returns          tHID_STATUS
**
*******************************************************************************/
extern tHID_STATUS HID_HostRegister (tHID_HOST_DEV_CALLBACK *dev_cback);

/*******************************************************************************
**
** Function         HID_HostDeregister
**
** Description      This function is called when the host is about power down.
**
** Returns          tHID_STATUS
**
*******************************************************************************/
extern tHID_STATUS HID_HostDeregister(void);

/*******************************************************************************
**
** Function         HID_HostAddDev
**
** Description      This is called so HID-host may manage this device.
**
** Returns          tHID_STATUS
**
*******************************************************************************/
extern tHID_STATUS HID_HostAddDev (BD_ADDR addr, UINT16 attr_mask,
                                   UINT8 *handle );

/*******************************************************************************
**
** Function         HID_HostRemoveDev
**
** Description      This removes the device from list devices that host has to manage.
**
** Returns          tHID_STATUS
**
*******************************************************************************/
extern tHID_STATUS HID_HostRemoveDev (UINT8 dev_handle );

/*******************************************************************************
**
** Function         HID_HostOpenDev
**
** Description      This function is called when the user wants to initiate a
**                  connection attempt to a device.
**
** Returns          void
**
*******************************************************************************/
extern tHID_STATUS HID_HostOpenDev (UINT8 dev_handle );

/*******************************************************************************
**
** Function         HID_HostWriteDev
**
** Description      This function is called when the host has a report to send.
**
** Returns          void
**
*******************************************************************************/
extern tHID_STATUS HID_HostWriteDev(UINT8 dev_handle, UINT8 t_type,
                                    UINT8 param, UINT16 data,
                                    UINT8 report_id, BT_HDR *pbuf);

/*******************************************************************************
**
** Function         HID_HostCloseDev
**
** Description      This function disconnects the device.
**
** Returns          void
**
*******************************************************************************/
extern tHID_STATUS HID_HostCloseDev(UINT8 dev_handle );

/*******************************************************************************
** Function         HID_HostInit
**
** Description      This function initializes the control block and trace variable
**
** Returns          void
*******************************************************************************/
extern void HID_HostInit(void);

/*******************************************************************************
** Function        HID_HostSetSecurityLevel
**
** Description     This function sets the security level for the devices which
**                 are marked by application as requiring security
**
** Returns         tHID_STATUS
*******************************************************************************/
extern tHID_STATUS HID_HostSetSecurityLevel( char serv_name[], UINT8 sec_lvl );

/*******************************************************************************
**
** Function         hid_known_hid_device
**
** Description      This function checks if this device is  of type HID Device
**
** Returns          TRUE if device exists else FALSE
**
*******************************************************************************/
BOOLEAN hid_known_hid_device (BD_ADDR bd_addr);


/*******************************************************************************
**
** Function         HID_HostSetTraceLevel
**
** Description      This function sets the trace level for HID Host. If called with
**                  a value of 0xFF, it simply reads the current trace level.
**
** Returns          the new (current) trace level
**
*******************************************************************************/
extern UINT8 HID_HostSetTraceLevel (UINT8 new_level);

#ifdef __cplusplus
}
#endif

#endif  /* HIDH_API_H */