diff options
Diffstat (limited to 'drivers/bluetooth/hci_uart.h')
| -rw-r--r-- | drivers/bluetooth/hci_uart.h | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/drivers/bluetooth/hci_uart.h b/drivers/bluetooth/hci_uart.h new file mode 100644 index 000000000..fb4a2d0d8 --- /dev/null +++ b/drivers/bluetooth/hci_uart.h @@ -0,0 +1,202 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * + * Bluetooth HCI UART driver + * + * Copyright (C) 2000-2001 Qualcomm Incorporated + * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com> + * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org> + */ + +#ifndef N_HCI +#define N_HCI 15 +#endif + +/* Ioctls */ +#define HCIUARTSETPROTO _IOW('U', 200, int) +#define HCIUARTGETPROTO _IOR('U', 201, int) +#define HCIUARTGETDEVICE _IOR('U', 202, int) +#define HCIUARTSETFLAGS _IOW('U', 203, int) +#define HCIUARTGETFLAGS _IOR('U', 204, int) + +/* UART protocols */ +#define HCI_UART_MAX_PROTO 12 + +#define HCI_UART_H4 0 +#define HCI_UART_BCSP 1 +#define HCI_UART_3WIRE 2 +#define HCI_UART_H4DS 3 +#define HCI_UART_LL 4 +#define HCI_UART_ATH3K 5 +#define HCI_UART_INTEL 6 +#define HCI_UART_BCM 7 +#define HCI_UART_QCA 8 +#define HCI_UART_AG6XX 9 +#define HCI_UART_NOKIA 10 +#define HCI_UART_MRVL 11 + +#define HCI_UART_RAW_DEVICE 0 +#define HCI_UART_RESET_ON_INIT 1 +#define HCI_UART_CREATE_AMP 2 +#define HCI_UART_INIT_PENDING 3 +#define HCI_UART_EXT_CONFIG 4 +#define HCI_UART_VND_DETECT 5 + +struct hci_uart; +struct serdev_device; + +struct hci_uart_proto { + unsigned int id; + const char *name; + unsigned int manufacturer; + unsigned int init_speed; + unsigned int oper_speed; + int (*open)(struct hci_uart *hu); + int (*close)(struct hci_uart *hu); + int (*flush)(struct hci_uart *hu); + int (*setup)(struct hci_uart *hu); + int (*set_baudrate)(struct hci_uart *hu, unsigned int speed); + int (*recv)(struct hci_uart *hu, const void *data, int len); + int (*enqueue)(struct hci_uart *hu, struct sk_buff *skb); + struct sk_buff *(*dequeue)(struct hci_uart *hu); +}; + +struct hci_uart { + struct tty_struct *tty; + struct serdev_device *serdev; + struct hci_dev *hdev; + unsigned long flags; + unsigned long hdev_flags; + + struct work_struct init_ready; + struct work_struct write_work; + + const struct hci_uart_proto *proto; + struct percpu_rw_semaphore proto_lock; /* Stop work for proto close */ + void *priv; + + struct sk_buff *tx_skb; + unsigned long tx_state; + + unsigned int init_speed; + unsigned int oper_speed; + + u8 alignment; + u8 padding; +}; + +/* HCI_UART proto flag bits */ +#define HCI_UART_PROTO_SET 0 +#define HCI_UART_REGISTERED 1 +#define HCI_UART_PROTO_READY 2 +#define HCI_UART_NO_SUSPEND_NOTIFIER 3 + +/* TX states */ +#define HCI_UART_SENDING 1 +#define HCI_UART_TX_WAKEUP 2 + +int hci_uart_register_proto(const struct hci_uart_proto *p); +int hci_uart_unregister_proto(const struct hci_uart_proto *p); +int hci_uart_register_device(struct hci_uart *hu, const struct hci_uart_proto *p); +void hci_uart_unregister_device(struct hci_uart *hu); + +int hci_uart_tx_wakeup(struct hci_uart *hu); +int hci_uart_wait_until_sent(struct hci_uart *hu); +int hci_uart_init_ready(struct hci_uart *hu); +void hci_uart_init_work(struct work_struct *work); +void hci_uart_set_baudrate(struct hci_uart *hu, unsigned int speed); +bool hci_uart_has_flow_control(struct hci_uart *hu); +void hci_uart_set_flow_control(struct hci_uart *hu, bool enable); +void hci_uart_set_speeds(struct hci_uart *hu, unsigned int init_speed, + unsigned int oper_speed); + +#ifdef CONFIG_BT_HCIUART_H4 +int h4_init(void); +int h4_deinit(void); + +struct h4_recv_pkt { + u8 type; /* Packet type */ + u8 hlen; /* Header length */ + u8 loff; /* Data length offset in header */ + u8 lsize; /* Data length field size */ + u16 maxlen; /* Max overall packet length */ + int (*recv)(struct hci_dev *hdev, struct sk_buff *skb); +}; + +#define H4_RECV_ACL \ + .type = HCI_ACLDATA_PKT, \ + .hlen = HCI_ACL_HDR_SIZE, \ + .loff = 2, \ + .lsize = 2, \ + .maxlen = HCI_MAX_FRAME_SIZE \ + +#define H4_RECV_SCO \ + .type = HCI_SCODATA_PKT, \ + .hlen = HCI_SCO_HDR_SIZE, \ + .loff = 2, \ + .lsize = 1, \ + .maxlen = HCI_MAX_SCO_SIZE + +#define H4_RECV_EVENT \ + .type = HCI_EVENT_PKT, \ + .hlen = HCI_EVENT_HDR_SIZE, \ + .loff = 1, \ + .lsize = 1, \ + .maxlen = HCI_MAX_EVENT_SIZE + +#define H4_RECV_ISO \ + .type = HCI_ISODATA_PKT, \ + .hlen = HCI_ISO_HDR_SIZE, \ + .loff = 2, \ + .lsize = 2, \ + .maxlen = HCI_MAX_FRAME_SIZE \ + +struct sk_buff *h4_recv_buf(struct hci_dev *hdev, struct sk_buff *skb, + const unsigned char *buffer, int count, + const struct h4_recv_pkt *pkts, int pkts_count); +#endif + +#ifdef CONFIG_BT_HCIUART_BCSP +int bcsp_init(void); +int bcsp_deinit(void); +#endif + +#ifdef CONFIG_BT_HCIUART_LL +int ll_init(void); +int ll_deinit(void); +#endif + +#ifdef CONFIG_BT_HCIUART_ATH3K +int ath_init(void); +int ath_deinit(void); +#endif + +#ifdef CONFIG_BT_HCIUART_3WIRE +int h5_init(void); +int h5_deinit(void); +#endif + +#ifdef CONFIG_BT_HCIUART_INTEL +int intel_init(void); +int intel_deinit(void); +#endif + +#ifdef CONFIG_BT_HCIUART_BCM +int bcm_init(void); +int bcm_deinit(void); +#endif + +#ifdef CONFIG_BT_HCIUART_QCA +int qca_init(void); +int qca_deinit(void); +#endif + +#ifdef CONFIG_BT_HCIUART_AG6XX +int ag6xx_init(void); +int ag6xx_deinit(void); +#endif + +#ifdef CONFIG_BT_HCIUART_MRVL +int mrvl_init(void); +int mrvl_deinit(void); +#endif |