text: /*
   *
   *  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>
   *
   *
   *  This program is free software; you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation; either version 2 of the License, or
   *  (at your option) any later version.
   *
   *  This program is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *  along with this program; if not, write to the Free Software
   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   *
   */
  
  #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
  
  /* 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_init_ready(struct hci_uart *hu);
  void hci_uart_set_baudrate(struct hci_uart *hu, unsigned int speed);
  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
  
  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
  