1 /******************************************************************************
2  *
3  *  Copyright (C) 2009-2012 Broadcom Corporation
4  *
5  *  Licensed under the Apache License, Version 2.0 (the "License");
6  *  you may not use this file except in compliance with the License.
7  *  You may obtain a copy of the License at:
8  *
9  *  http://www.apache.org/licenses/LICENSE-2.0
10  *
11  *  Unless required by applicable law or agreed to in writing, software
12  *  distributed under the License is distributed on an "AS IS" BASIS,
13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  *  See the License for the specific language governing permissions and
15  *  limitations under the License.
16  *
17  ******************************************************************************/
18 
19 #ifndef BTIF_HH_H
20 #define BTIF_HH_H
21 
22 #include <hardware/bluetooth.h>
23 #include <hardware/bt_hh.h>
24 #include <pthread.h>
25 #include <stdint.h>
26 #include "bta_hh_api.h"
27 #include "btu.h"
28 
29 /*******************************************************************************
30  *  Constants & Macros
31  ******************************************************************************/
32 
33 #define BTIF_HH_MAX_HID 8
34 #define BTIF_HH_MAX_ADDED_DEV 32
35 
36 #define BTIF_HH_MAX_KEYSTATES 3
37 #define BTIF_HH_KEYSTATE_MASK_NUMLOCK 0x01
38 #define BTIF_HH_KEYSTATE_MASK_CAPSLOCK 0x02
39 #define BTIF_HH_KEYSTATE_MASK_SCROLLLOCK 0x04
40 
41 #define BTIF_HH_MAX_POLLING_ATTEMPTS 10
42 #define BTIF_HH_POLLING_SLEEP_DURATION_US 5000
43 
44 /*******************************************************************************
45  *  Type definitions and return values
46  ******************************************************************************/
47 
48 typedef enum {
49   BTIF_HH_DISABLED = 0,
50   BTIF_HH_ENABLED,
51   BTIF_HH_DISABLING,
52   BTIF_HH_DEV_UNKNOWN,
53   BTIF_HH_DEV_CONNECTING,
54   BTIF_HH_DEV_CONNECTED,
55   BTIF_HH_DEV_DISCONNECTED
56 } BTIF_HH_STATUS;
57 
58 typedef struct {
59   bthh_connection_state_t dev_status;
60   uint8_t dev_handle;
61   bt_bdaddr_t bd_addr;
62   tBTA_HH_ATTR_MASK attr_mask;
63   uint8_t sub_class;
64   uint8_t app_id;
65   int fd;
66   bool ready_for_data;
67   pthread_t hh_poll_thread_id;
68   uint8_t hh_keep_polling;
69   alarm_t* vup_timer;
70   bool local_vup;  // Indicated locally initiated VUP
71 } btif_hh_device_t;
72 
73 /* Control block to maintain properties of devices */
74 typedef struct {
75   uint8_t dev_handle;
76   bt_bdaddr_t bd_addr;
77   tBTA_HH_ATTR_MASK attr_mask;
78 } btif_hh_added_device_t;
79 
80 /**
81  * BTIF-HH control block to maintain added devices and currently
82  * connected hid devices
83  */
84 typedef struct {
85   BTIF_HH_STATUS status;
86   btif_hh_device_t devices[BTIF_HH_MAX_HID];
87   uint32_t device_num;
88   btif_hh_added_device_t added_devices[BTIF_HH_MAX_ADDED_DEV];
89   btif_hh_device_t* p_curr_dev;
90   bool service_dereg_active;
91 } btif_hh_cb_t;
92 
93 /*******************************************************************************
94  *  Functions
95  ******************************************************************************/
96 
97 extern btif_hh_cb_t btif_hh_cb;
98 
99 extern btif_hh_device_t* btif_hh_find_connected_dev_by_handle(uint8_t handle);
100 extern void btif_hh_remove_device(bt_bdaddr_t bd_addr);
101 bool btif_hh_add_added_dev(bt_bdaddr_t bda, tBTA_HH_ATTR_MASK attr_mask);
102 extern bt_status_t btif_hh_virtual_unplug(bt_bdaddr_t* bd_addr);
103 extern void btif_hh_disconnect(bt_bdaddr_t* bd_addr);
104 extern void btif_hh_setreport(btif_hh_device_t* p_dev,
105                               bthh_report_type_t r_type, uint16_t size,
106                               uint8_t* report);
107 extern void btif_hh_service_registration(bool enable);
108 
109 bool btif_hh_add_added_dev(bt_bdaddr_t bd_addr, tBTA_HH_ATTR_MASK attr_mask);
110 
111 #endif
112