1 /* SPDX-License-Identifier: GPL-2.0-or-later */
4 * Bluetooth HCI UART driver
6 * Copyright (C) 2000-2001 Qualcomm Incorporated
7 * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com>
8 * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org>
16 #define HCIUARTSETPROTO _IOW('U', 200, int)
17 #define HCIUARTGETPROTO _IOR('U', 201, int)
18 #define HCIUARTGETDEVICE _IOR('U', 202, int)
19 #define HCIUARTSETFLAGS _IOW('U', 203, int)
20 #define HCIUARTGETFLAGS _IOR('U', 204, int)
23 #define HCI_UART_MAX_PROTO 12
26 #define HCI_UART_BCSP 1
27 #define HCI_UART_3WIRE 2
28 #define HCI_UART_H4DS 3
30 #define HCI_UART_ATH3K 5
31 #define HCI_UART_INTEL 6
32 #define HCI_UART_BCM 7
33 #define HCI_UART_QCA 8
34 #define HCI_UART_AG6XX 9
35 #define HCI_UART_NOKIA 10
36 #define HCI_UART_MRVL 11
38 #define HCI_UART_RAW_DEVICE 0
39 #define HCI_UART_RESET_ON_INIT 1
40 #define HCI_UART_CREATE_AMP 2
41 #define HCI_UART_INIT_PENDING 3
42 #define HCI_UART_EXT_CONFIG 4
43 #define HCI_UART_VND_DETECT 5
48 struct hci_uart_proto {
51 unsigned int manufacturer;
52 unsigned int init_speed;
53 unsigned int oper_speed;
54 int (*open)(struct hci_uart *hu);
55 int (*close)(struct hci_uart *hu);
56 int (*flush)(struct hci_uart *hu);
57 int (*setup)(struct hci_uart *hu);
58 int (*set_baudrate)(struct hci_uart *hu, unsigned int speed);
59 int (*recv)(struct hci_uart *hu, const void *data, int len);
60 int (*enqueue)(struct hci_uart *hu, struct sk_buff *skb);
61 struct sk_buff *(*dequeue)(struct hci_uart *hu);
65 struct tty_struct *tty;
66 struct serdev_device *serdev;
69 unsigned long hdev_flags;
71 struct work_struct init_ready;
72 struct work_struct write_work;
74 const struct hci_uart_proto *proto;
75 struct percpu_rw_semaphore proto_lock; /* Stop work for proto close */
78 struct sk_buff *tx_skb;
79 unsigned long tx_state;
81 unsigned int init_speed;
82 unsigned int oper_speed;
88 /* HCI_UART proto flag bits */
89 #define HCI_UART_PROTO_SET 0
90 #define HCI_UART_REGISTERED 1
91 #define HCI_UART_PROTO_READY 2
92 #define HCI_UART_NO_SUSPEND_NOTIFIER 3
95 #define HCI_UART_SENDING 1
96 #define HCI_UART_TX_WAKEUP 2
98 int hci_uart_register_proto(const struct hci_uart_proto *p);
99 int hci_uart_unregister_proto(const struct hci_uart_proto *p);
100 int hci_uart_register_device(struct hci_uart *hu, const struct hci_uart_proto *p);
101 void hci_uart_unregister_device(struct hci_uart *hu);
103 int hci_uart_tx_wakeup(struct hci_uart *hu);
104 int hci_uart_wait_until_sent(struct hci_uart *hu);
105 int hci_uart_init_ready(struct hci_uart *hu);
106 void hci_uart_init_work(struct work_struct *work);
107 void hci_uart_set_baudrate(struct hci_uart *hu, unsigned int speed);
108 bool hci_uart_has_flow_control(struct hci_uart *hu);
109 void hci_uart_set_flow_control(struct hci_uart *hu, bool enable);
110 void hci_uart_set_speeds(struct hci_uart *hu, unsigned int init_speed,
111 unsigned int oper_speed);
113 #ifdef CONFIG_BT_HCIUART_H4
118 u8 type; /* Packet type */
119 u8 hlen; /* Header length */
120 u8 loff; /* Data length offset in header */
121 u8 lsize; /* Data length field size */
122 u16 maxlen; /* Max overall packet length */
123 int (*recv)(struct hci_dev *hdev, struct sk_buff *skb);
126 #define H4_RECV_ACL \
127 .type = HCI_ACLDATA_PKT, \
128 .hlen = HCI_ACL_HDR_SIZE, \
131 .maxlen = HCI_MAX_FRAME_SIZE \
133 #define H4_RECV_SCO \
134 .type = HCI_SCODATA_PKT, \
135 .hlen = HCI_SCO_HDR_SIZE, \
138 .maxlen = HCI_MAX_SCO_SIZE
140 #define H4_RECV_EVENT \
141 .type = HCI_EVENT_PKT, \
142 .hlen = HCI_EVENT_HDR_SIZE, \
145 .maxlen = HCI_MAX_EVENT_SIZE
147 #define H4_RECV_ISO \
148 .type = HCI_ISODATA_PKT, \
149 .hlen = HCI_ISO_HDR_SIZE, \
152 .maxlen = HCI_MAX_FRAME_SIZE \
154 struct sk_buff *h4_recv_buf(struct hci_dev *hdev, struct sk_buff *skb,
155 const unsigned char *buffer, int count,
156 const struct h4_recv_pkt *pkts, int pkts_count);
159 #ifdef CONFIG_BT_HCIUART_BCSP
161 int bcsp_deinit(void);
164 #ifdef CONFIG_BT_HCIUART_LL
169 #ifdef CONFIG_BT_HCIUART_ATH3K
171 int ath_deinit(void);
174 #ifdef CONFIG_BT_HCIUART_3WIRE
179 #ifdef CONFIG_BT_HCIUART_INTEL
180 int intel_init(void);
181 int intel_deinit(void);
184 #ifdef CONFIG_BT_HCIUART_BCM
186 int bcm_deinit(void);
189 #ifdef CONFIG_BT_HCIUART_QCA
191 int qca_deinit(void);
194 #ifdef CONFIG_BT_HCIUART_AG6XX
195 int ag6xx_init(void);
196 int ag6xx_deinit(void);
199 #ifdef CONFIG_BT_HCIUART_MRVL
201 int mrvl_deinit(void);