drivers/net/irda/mcs7780.h

   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
 103 struct 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         spinlock_t lock;
 120         int receiving;
 121
 122         __u8 ep_in;
 123         __u8 ep_out;
 124
 125         struct urb *rx_urb;
 126         struct urb *tx_urb;
 127
 128         int transceiver_type;
 129         int sir_tweak;
 130         int receive_mode;
 131 };
 132
 133 static int mcs_set_reg(struct mcs_cb *mcs, __u16 reg, __u16 val);
 134 static int mcs_get_reg(struct mcs_cb *mcs, __u16 reg, __u16 * val);
 135
 136 static inline int mcs_setup_transceiver_vishay(struct mcs_cb *mcs);
 137 static inline int mcs_setup_transceiver_agilent(struct mcs_cb *mcs);
 138 static inline int mcs_setup_transceiver_sharp(struct mcs_cb *mcs);
 139 static inline int mcs_setup_transceiver(struct mcs_cb *mcs);
 140 static inline int mcs_wrap_sir_skb(struct sk_buff *skb, __u8 * buf);
 141 static unsigned mcs_wrap_fir_skb(const struct sk_buff *skb, __u8 *buf);
 142 static unsigned mcs_wrap_mir_skb(const struct sk_buff *skb, __u8 *buf);
 143 static void mcs_unwrap_mir(struct mcs_cb *mcs, __u8 *buf, int len);
 144 static void mcs_unwrap_fir(struct mcs_cb *mcs, __u8 *buf, int len);
 145 static inline int mcs_setup_urbs(struct mcs_cb *mcs);
 146 static inline int mcs_receive_start(struct mcs_cb *mcs);
 147 static inline int mcs_find_endpoints(struct mcs_cb *mcs,
 148                                      struct usb_host_endpoint *ep, int epnum);
 149
 150 static int mcs_speed_change(struct mcs_cb *mcs);
 151
 152 static int mcs_net_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd);
 153 static int mcs_net_close(struct net_device *netdev);
 154 static int mcs_net_open(struct net_device *netdev);
 155
 156 static void mcs_receive_irq(struct urb *urb);
 157 static void mcs_send_irq(struct urb *urb);
 158 static netdev_tx_t mcs_hard_xmit(struct sk_buff *skb,
 159                                        struct net_device *netdev);
 160
 161 static int mcs_probe(struct usb_interface *intf,
 162                      const struct usb_device_id *id);
 163 static void mcs_disconnect(struct usb_interface *intf);
 164
 165 #endif                          /* _MCS7780_H */