1/***************************************************************************** 2* 3* Filename: mcs7780.h 4* Version: 0.2-alpha 5* Description: Irda MosChip USB Dongle 6* Status: Experimental 7* Authors: Lukasz Stelmach <stlman@poczta.fm> 8* Brian Pugh <bpugh@cs.pdx.edu> 9* 10* Copyright (C) 2005, Lukasz Stelmach <stlman@poczta.fm> 11* Copyright (C) 2005, Brian Pugh <bpugh@cs.pdx.edu> 12* 13* This program is free software; you can redistribute it and/or modify 14* it under the terms of the GNU General Public License as published by 15* the Free Software Foundation; either version 2 of the License, or 16* (at your option) any later version. 17* 18* This program is distributed in the hope that it will be useful, 19* but WITHOUT ANY WARRANTY; without even the implied warranty of 20* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21* GNU General Public License for more details. 22* 23* You should have received a copy of the GNU General Public License 24* along with this program; if not, write to the Free Software 25* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 26* 27*****************************************************************************/ 28#ifndef _MCS7780_H 29#define _MCS7780_H 30 31#define MCS_MODE_SIR 0 32#define MCS_MODE_MIR 1 33#define MCS_MODE_FIR 2 34 35#define MCS_CTRL_TIMEOUT 500 36#define MCS_XMIT_TIMEOUT 500 37/* Possible transceiver types */ 38#define MCS_TSC_VISHAY 0 /* Vishay TFD, default choice */ 39#define MCS_TSC_AGILENT 1 /* Agilent 3602/3600 */ 40#define MCS_TSC_SHARP 2 /* Sharp GP2W1000YP */ 41 42/* Requests */ 43#define MCS_RD_RTYPE 0xC0 44#define MCS_WR_RTYPE 0x40 45#define MCS_RDREQ 0x0F 46#define MCS_WRREQ 0x0E 47 48/* Register 0x00 */ 49#define MCS_MODE_REG 0 50#define MCS_FIR ((__u16)0x0001) 51#define MCS_SIR16US ((__u16)0x0002) 52#define MCS_BBTG ((__u16)0x0004) 53#define MCS_ASK ((__u16)0x0008) 54#define MCS_PARITY ((__u16)0x0010) 55 56/* SIR/MIR speed constants */ 57#define MCS_SPEED_SHIFT 5 58#define MCS_SPEED_MASK ((__u16)0x00E0) 59#define MCS_SPEED(x) ((x & MCS_SPEED_MASK) >> MCS_SPEED_SHIFT) 60#define MCS_SPEED_2400 ((0 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK) 61#define MCS_SPEED_9600 ((1 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK) 62#define MCS_SPEED_19200 ((2 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK) 63#define MCS_SPEED_38400 ((3 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK) 64#define MCS_SPEED_57600 ((4 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK) 65#define MCS_SPEED_115200 ((5 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK) 66#define MCS_SPEED_576000 ((6 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK) 67#define MCS_SPEED_1152000 ((7 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK) 68 69#define MCS_PLLPWDN ((__u16)0x0100) 70#define MCS_DRIVER ((__u16)0x0200) 71#define MCS_DTD ((__u16)0x0400) 72#define MCS_DIR ((__u16)0x0800) 73#define MCS_SIPEN ((__u16)0x1000) 74#define MCS_SENDSIP ((__u16)0x2000) 75#define MCS_CHGDIR ((__u16)0x4000) 76#define MCS_RESET ((__u16)0x8000) 77 78/* Register 0x02 */ 79#define MCS_XCVR_REG 2 80#define MCS_MODE0 ((__u16)0x0001) 81#define MCS_STFIR ((__u16)0x0002) 82#define MCS_XCVR_CONF ((__u16)0x0004) 83#define MCS_RXFAST ((__u16)0x0008) 84/* TXCUR [6:4] */ 85#define MCS_TXCUR_SHIFT 4 86#define MCS_TXCUR_MASK ((__u16)0x0070) 87#define MCS_TXCUR(x) ((x & MCS_TXCUR_MASK) >> MCS_TXCUR_SHIFT) 88#define MCS_SETTXCUR(x,y) \ 89 ((x & ~MCS_TXCUR_MASK) | (y << MCS_TXCUR_SHIFT) & MCS_TXCUR_MASK) 90 91#define MCS_MODE1 ((__u16)0x0080) 92#define MCS_SMODE0 ((__u16)0x0100) 93#define MCS_SMODE1 ((__u16)0x0200) 94#define MCS_INVTX ((__u16)0x0400) 95#define MCS_INVRX ((__u16)0x0800) 96 97#define MCS_MINRXPW_REG 4 98 99#define MCS_RESV_REG 7 100#define MCS_IRINTX ((__u16)0x0001) 101#define MCS_IRINRX ((__u16)0x0002) 102 103struct mcs_cb { 104 struct usb_device *usbdev; /* init: probe_irda */ 105 struct net_device *netdev; /* network layer */ 106 struct irlap_cb *irlap; /* The link layer we are binded to */ 107 struct qos_info qos; 108 unsigned int speed; /* Current speed */ 109 unsigned int new_speed; /* new speed */ 110 111 struct work_struct work; /* Change speed work */ 112 113 struct sk_buff *tx_pending; 114 char in_buf[4096]; /* transmit/receive buffer */ 115 char out_buf[4096]; /* transmit/receive buffer */ 116 __u8 *fifo_status; 117 118 iobuff_t rx_buff; /* receive unwrap state machine */ 119 struct timeval rx_time; 120 spinlock_t lock; 121 int receiving; 122 123 __u8 ep_in; 124 __u8 ep_out; 125 126 struct urb *rx_urb; 127 struct urb *tx_urb; 128 129 int transceiver_type; 130 int sir_tweak; 131 int receive_mode; 132}; 133 134static int mcs_set_reg(struct mcs_cb *mcs, __u16 reg, __u16 val); 135static int mcs_get_reg(struct mcs_cb *mcs, __u16 reg, __u16 * val); 136 137static inline int mcs_setup_transceiver_vishay(struct mcs_cb *mcs); 138static inline int mcs_setup_transceiver_agilent(struct mcs_cb *mcs); 139static inline int mcs_setup_transceiver_sharp(struct mcs_cb *mcs); 140static inline int mcs_setup_transceiver(struct mcs_cb *mcs); 141static inline int mcs_wrap_sir_skb(struct sk_buff *skb, __u8 * buf); 142static unsigned mcs_wrap_fir_skb(const struct sk_buff *skb, __u8 *buf); 143static unsigned mcs_wrap_mir_skb(const struct sk_buff *skb, __u8 *buf); 144static void mcs_unwrap_mir(struct mcs_cb *mcs, __u8 *buf, int len); 145static void mcs_unwrap_fir(struct mcs_cb *mcs, __u8 *buf, int len); 146static inline int mcs_setup_urbs(struct mcs_cb *mcs); 147static inline int mcs_receive_start(struct mcs_cb *mcs); 148static inline int mcs_find_endpoints(struct mcs_cb *mcs, 149 struct usb_host_endpoint *ep, int epnum); 150 151static int mcs_speed_change(struct mcs_cb *mcs); 152 153static int mcs_net_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd); 154static int mcs_net_close(struct net_device *netdev); 155static int mcs_net_open(struct net_device *netdev); 156 157static void mcs_receive_irq(struct urb *urb); 158static void mcs_send_irq(struct urb *urb); 159static netdev_tx_t mcs_hard_xmit(struct sk_buff *skb, 160 struct net_device *netdev); 161 162static int mcs_probe(struct usb_interface *intf, 163 const struct usb_device_id *id); 164static void mcs_disconnect(struct usb_interface *intf); 165 166#endif /* _MCS7780_H */ 167