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Diffstat (limited to 'include/hardware/bluetooth.h')
| -rw-r--r-- | include/hardware/bluetooth.h | 441 |
1 files changed, 441 insertions, 0 deletions
diff --git a/include/hardware/bluetooth.h b/include/hardware/bluetooth.h new file mode 100644 index 0000000..be7f0b1 --- /dev/null +++ b/include/hardware/bluetooth.h @@ -0,0 +1,441 @@ +/* + * Copyright (C) 2012 The Android Open Source Project + * + * 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 ANDROID_INCLUDE_BLUETOOTH_H +#define ANDROID_INCLUDE_BLUETOOTH_H + +#include <stdint.h> +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <hardware/hardware.h> + +__BEGIN_DECLS + +/** + * The Bluetooth Hardware Module ID + */ + +#define BT_HARDWARE_MODULE_ID "bluetooth" +#define BT_STACK_MODULE_ID "bluetooth" +#define BT_STACK_TEST_MODULE_ID "bluetooth_test" + + +/* Bluetooth profile interface IDs */ + +#define BT_PROFILE_HANDSFREE_ID "handsfree" +#define BT_PROFILE_ADVANCED_AUDIO_ID "a2dp" +#define BT_PROFILE_HEALTH_ID "health" +#define BT_PROFILE_SOCKETS_ID "socket" +#define BT_PROFILE_HIDHOST_ID "hidhost" +#define BT_PROFILE_PAN_ID "pan" + + +/** Bluetooth Address */ +typedef struct { + uint8_t address[6]; +} __attribute__((packed))bt_bdaddr_t; + +/** Bluetooth Device Name */ +typedef struct { + uint8_t name[248]; +} __attribute__((packed))bt_bdname_t; + +/** Bluetooth Adapter Visibility Modes*/ +typedef enum { + BT_SCAN_MODE_NONE, + BT_SCAN_MODE_CONNECTABLE, + BT_SCAN_MODE_CONNECTABLE_DISCOVERABLE +} bt_scan_mode_t; + +/** Bluetooth Adapter State */ +typedef enum { + BT_STATE_OFF, + BT_STATE_ON +} bt_state_t; + +/** Bluetooth Error Status */ +/** We need to build on this */ + +typedef enum { + BT_STATUS_SUCCESS, + BT_STATUS_FAIL, + BT_STATUS_NOT_READY, + BT_STATUS_NOMEM, + BT_STATUS_BUSY, + BT_STATUS_DONE, /* request already completed */ + BT_STATUS_UNSUPPORTED, + BT_STATUS_PARM_INVALID, + BT_STATUS_UNHANDLED, + BT_STATUS_AUTH_FAILURE, + BT_STATUS_RMT_DEV_DOWN + +} bt_status_t; + +/** Bluetooth PinKey Code */ +typedef struct { + uint8_t pin[16]; +} __attribute__((packed))bt_pin_code_t; + +/** Bluetooth Adapter Discovery state */ +typedef enum { + BT_DISCOVERY_STOPPED, + BT_DISCOVERY_STARTED +} bt_discovery_state_t; + +/** Bluetooth ACL connection state */ +typedef enum { + BT_ACL_STATE_CONNECTED, + BT_ACL_STATE_DISCONNECTED +} bt_acl_state_t; + +/** Bluetooth 128-bit UUID */ +typedef struct { + uint8_t uu[16]; +} bt_uuid_t; + +/** Bluetooth SDP service record */ +typedef struct +{ + bt_uuid_t uuid; + uint16_t channel; + char name[256]; // what's the maximum length +} bt_service_record_t; + +/* Bluetooth Adapter and Remote Device property types */ +typedef enum { + /* Properties common to both adapter and remote device */ + /** + * Description - Bluetooth Device Name + * Access mode - Adapter name can be GET/SET. Remote device can be GET + * Data type - bt_bdname_t + */ + BT_PROPERTY_BDNAME = 0x1, + /** + * Description - Bluetooth Device Address + * Access mode - Only GET. + * Data type - bt_bdaddr_t + */ + BT_PROPERTY_BDADDR, + /** + * Description - Bluetooth Service 128-bit UUIDs + * Access mode - Only GET. + * Data type - Array of bt_uuid_t (Array size inferred from property length). + */ + BT_PROPERTY_UUIDS, + /** + * Description - Bluetooth Class of Device as found in Assigned Numbers + * Access mode - Only GET. + * Data type - uint32_t. + */ + BT_PROPERTY_CLASS_OF_DEVICE, + /** + * Description - Device Type - BREDR, BLE or DUAL Mode + * Access mode - Only GET. + * Data type - bt_device_type_t + */ + BT_PROPERTY_TYPE_OF_DEVICE, + /** + * Description - Bluetooth Service Record + * Access mode - Only GET. + * Data type - bt_service_record_t + */ + BT_PROPERTY_SERVICE_RECORD, + + /* Properties unique to adapter */ + /** + * Description - Bluetooth Adapter scan mode + * Access mode - GET and SET + * Data type - bt_scan_mode_t. + */ + BT_PROPERTY_ADAPTER_SCAN_MODE, + /** + * Description - List of bonded devices + * Access mode - Only GET. + * Data type - Array of bt_bdaddr_t of the bonded remote devices + * (Array size inferred from property length). + */ + BT_PROPERTY_ADAPTER_BONDED_DEVICES, + /** + * Description - Bluetooth Adapter Discovery timeout (in seconds) + * Access mode - GET and SET + * Data type - uint32_t + */ + BT_PROPERTY_ADAPTER_DISCOVERY_TIMEOUT, + + /* Properties unique to remote device */ + /** + * Description - User defined friendly name of the remote device + * Access mode - GET and SET + * Data type - bt_bdname_t. + */ + BT_PROPERTY_REMOTE_FRIENDLY_NAME, + /** + * Description - RSSI value of the inquired remote device + * Access mode - Only GET. + * Data type - int32_t. + */ + BT_PROPERTY_REMOTE_RSSI, + + BT_PROPERTY_REMOTE_DEVICE_TIMESTAMP = 0xFF, +} bt_property_type_t; + +/** Bluetooth Adapter Property data structure */ +typedef struct +{ + bt_property_type_t type; + int len; + void *val; +} bt_property_t; + +/** Bluetooth Device Type */ +typedef enum { + BT_DEVICE_DEVTYPE_BREDR = 0x1, + BT_DEVICE_DEVTYPE_BLE, + BT_DEVICE_DEVTYPE_DUAL +} bt_device_type_t; +/** Bluetooth Bond state */ +typedef enum { + BT_BOND_STATE_NONE, + BT_BOND_STATE_BONDING, + BT_BOND_STATE_BONDED +} bt_bond_state_t; + +/** Bluetooth SSP Bonding Variant */ +typedef enum { + BT_SSP_VARIANT_PASSKEY_CONFIRMATION, + BT_SSP_VARIANT_PASSKEY_ENTRY, + BT_SSP_VARIANT_CONSENT, + BT_SSP_VARIANT_PASSKEY_NOTIFICATION +} bt_ssp_variant_t; + +#define BT_MAX_NUM_UUIDS 32 + +/** Bluetooth Interface callbacks */ + +/** Bluetooth Enable/Disable Callback. */ +typedef void (*adapter_state_changed_callback)(bt_state_t state); + +/** GET/SET Adapter Properties callback */ +/* TODO: For the GET/SET property APIs/callbacks, we may need a session + * identifier to associate the call with the callback. This would be needed + * whenever more than one simultaneous instance of the same adapter_type + * is get/set. + * + * If this is going to be handled in the Java framework, then we do not need + * to manage sessions here. + */ +typedef void (*adapter_properties_callback)(bt_status_t status, + int num_properties, + bt_property_t *properties); + +/** GET/SET Remote Device Properties callback */ +/** TODO: For remote device properties, do not see a need to get/set + * multiple properties - num_properties shall be 1 + */ +typedef void (*remote_device_properties_callback)(bt_status_t status, + bt_bdaddr_t *bd_addr, + int num_properties, + bt_property_t *properties); + +/** New device discovered callback */ +/** If EIR data is not present, then BD_NAME and RSSI shall be NULL and -1 + * respectively */ +typedef void (*device_found_callback)(int num_properties, + bt_property_t *properties); + +/** Discovery state changed callback */ +typedef void (*discovery_state_changed_callback)(bt_discovery_state_t state); + +/** Bluetooth Legacy PinKey Request callback */ +typedef void (*pin_request_callback)(bt_bdaddr_t *remote_bd_addr, + bt_bdname_t *bd_name, uint32_t cod); + +/** Bluetooth SSP Request callback - Just Works & Numeric Comparison*/ +/** pass_key - Shall be 0 for BT_SSP_PAIRING_VARIANT_CONSENT & + * BT_SSP_PAIRING_PASSKEY_ENTRY */ +/* TODO: Passkey request callback shall not be needed for devices with display + * capability. We still need support this in the stack for completeness */ +typedef void (*ssp_request_callback)(bt_bdaddr_t *remote_bd_addr, + bt_bdname_t *bd_name, + uint32_t cod, + bt_ssp_variant_t pairing_variant, + uint32_t pass_key); + +/** Bluetooth Bond state changed callback */ +/* Invoked in response to create_bond, cancel_bond or remove_bond */ +typedef void (*bond_state_changed_callback)(bt_status_t status, + bt_bdaddr_t *remote_bd_addr, + bt_bond_state_t state); + +/** Bluetooth ACL connection state changed callback */ +typedef void (*acl_state_changed_callback)(bt_status_t status, bt_bdaddr_t *remote_bd_addr, + bt_acl_state_t state); + +typedef enum { + ASSOCIATE_JVM, + DISASSOCIATE_JVM +} bt_cb_thread_evt; + +/** Thread Associate/Disassociate JVM Callback */ +/* Callback that is invoked by the callback thread to allow upper layer to attach/detach to/from + * the JVM */ +typedef void (*callback_thread_event)(bt_cb_thread_evt evt); + +/** Bluetooth Test Mode Callback */ +/* Receive any HCI event from controller. Must be in DUT Mode for this callback to be received */ +typedef void (*dut_mode_recv_callback)(uint16_t opcode, uint8_t *buf, uint8_t len); + +/** TODO: Add callbacks for Link Up/Down and other generic + * notifications/callbacks */ + +/** Bluetooth DM callback structure. */ +typedef struct { + /** set to sizeof(bt_callbacks_t) */ + size_t size; + adapter_state_changed_callback adapter_state_changed_cb; + adapter_properties_callback adapter_properties_cb; + remote_device_properties_callback remote_device_properties_cb; + device_found_callback device_found_cb; + discovery_state_changed_callback discovery_state_changed_cb; + pin_request_callback pin_request_cb; + ssp_request_callback ssp_request_cb; + bond_state_changed_callback bond_state_changed_cb; + acl_state_changed_callback acl_state_changed_cb; + callback_thread_event thread_evt_cb; + dut_mode_recv_callback dut_mode_recv_cb; +} bt_callbacks_t; + +/** NOTE: By default, no profiles are initialized at the time of init/enable. + * Whenever the application invokes the 'init' API of a profile, then one of + * the following shall occur: + * + * 1.) If Bluetooth is not enabled, then the Bluetooth core shall mark the + * profile as enabled. Subsequently, when the application invokes the + * Bluetooth 'enable', as part of the enable sequence the profile that were + * marked shall be enabled by calling appropriate stack APIs. The + * 'adapter_properties_cb' shall return the list of UUIDs of the + * enabled profiles. + * + * 2.) If Bluetooth is enabled, then the Bluetooth core shall invoke the stack + * profile API to initialize the profile and trigger a + * 'adapter_properties_cb' with the current list of UUIDs including the + * newly added profile's UUID. + * + * The reverse shall occur whenever the profile 'cleanup' APIs are invoked + */ + +/** Represents the standard Bluetooth DM interface. */ +typedef struct { + /** set to sizeof(bt_interface_t) */ + size_t size; + /** + * Opens the interface and provides the callback routines + * to the implemenation of this interface. + */ + int (*init)(bt_callbacks_t* callbacks ); + + /** Enable Bluetooth. */ + int (*enable)(void); + + /** Disable Bluetooth. */ + int (*disable)(void); + + /** Closes the interface. */ + void (*cleanup)(void); + + /** Get all Bluetooth Adapter properties at init */ + int (*get_adapter_properties)(void); + + /** Get Bluetooth Adapter property of 'type' */ + int (*get_adapter_property)(bt_property_type_t type); + + /** Set Bluetooth Adapter property of 'type' */ + /* Based on the type, val shall be one of + * bt_bdaddr_t or bt_bdname_t or bt_scanmode_t etc + */ + int (*set_adapter_property)(const bt_property_t *property); + + /** Get all Remote Device properties */ + int (*get_remote_device_properties)(bt_bdaddr_t *remote_addr); + + /** Get Remote Device property of 'type' */ + int (*get_remote_device_property)(bt_bdaddr_t *remote_addr, + bt_property_type_t type); + + /** Set Remote Device property of 'type' */ + int (*set_remote_device_property)(bt_bdaddr_t *remote_addr, + const bt_property_t *property); + + /** Get Remote Device's service record for the given UUID */ + int (*get_remote_service_record)(bt_bdaddr_t *remote_addr, + bt_uuid_t *uuid); + + /** Start SDP to get remote services */ + int (*get_remote_services)(bt_bdaddr_t *remote_addr); + + /** Start Discovery */ + int (*start_discovery)(void); + + /** Cancel Discovery */ + int (*cancel_discovery)(void); + + /** Create Bluetooth Bonding */ + int (*create_bond)(const bt_bdaddr_t *bd_addr); + + /** Remove Bond */ + int (*remove_bond)(const bt_bdaddr_t *bd_addr); + + /** Cancel Bond */ + int (*cancel_bond)(const bt_bdaddr_t *bd_addr); + + /** BT Legacy PinKey Reply */ + /** If accept==FALSE, then pin_len and pin_code shall be 0x0 */ + int (*pin_reply)(const bt_bdaddr_t *bd_addr, uint8_t accept, + uint8_t pin_len, bt_pin_code_t *pin_code); + + /** BT SSP Reply - Just Works, Numeric Comparison and Passkey + * passkey shall be zero for BT_SSP_VARIANT_PASSKEY_COMPARISON & + * BT_SSP_VARIANT_CONSENT + * For BT_SSP_VARIANT_PASSKEY_ENTRY, if accept==FALSE, then passkey + * shall be zero */ + int (*ssp_reply)(const bt_bdaddr_t *bd_addr, bt_ssp_variant_t variant, + uint8_t accept, uint32_t passkey); + + /** Get Bluetooth profile interface */ + const void* (*get_profile_interface) (const char *profile_id); + + /** Bluetooth Test Mode APIs - Bluetooth must be enabled for these APIs */ + /* Configure DUT Mode - Use this mode to enter/exit DUT mode */ + int (*dut_mode_configure)(uint8_t enable); + + /* Send any test HCI (vendor-specific) command to the controller. Must be in DUT Mode */ + int (*dut_mode_send)(uint16_t opcode, uint8_t *buf, uint8_t len); +} bt_interface_t; + +/** TODO: Need to add APIs for Service Discovery, Service authorization and + * connection management. Also need to add APIs for configuring + * properties of remote bonded devices such as name, UUID etc. */ + +typedef struct { + struct hw_device_t common; + const bt_interface_t* (*get_bluetooth_interface)(); +} bluetooth_device_t; + +typedef bluetooth_device_t bluetooth_module_t; +__END_DECLS + +#endif /* ANDROID_INCLUDE_BLUETOOTH_H */ |