err.no Git - linux-2.6/blob - drivers/media/dvb/dvb-usb/au6610.c

   1 /* DVB USB compliant linux driver for Sigmatek DVB-110 DVB-T USB2.0 receiver
   2  *
   3  * Copyright (C) 2006 Antti Palosaari (crope@iki.fi)
   4  *
   5  *      This program is free software; you can redistribute it and/or modify it
   6  *      under the terms of the GNU General Public License as published by the Free
   7  *      Software Foundation, version 2.
   8  *
   9  * see Documentation/dvb/README.dvb-usb for more information
  10  */
  11
  12 #include "au6610.h"
  13
  14 #include "zl10353.h"
  15 #include "qt1010.h"
  16
  17 /* debug */
  18 static int dvb_usb_au6610_debug;
  19 module_param_named(debug, dvb_usb_au6610_debug, int, 0644);
  20 MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);
  21
  22
  23 static int au6610_usb_msg(struct dvb_usb_device *d, u8 operation, u8 addr,
  24                           u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
  25 {
  26         int ret;
  27         u16 index;
  28         u8 usb_buf[6]; /* enough for all known requests, read returns 5 and write 6 bytes */
  29
  30         switch (wlen) {
  31         case 1:
  32                 index = wbuf[0] << 8;
  33                 break;
  34         case 2:
  35                 index = wbuf[0] << 8;
  36                 index += wbuf[1];
  37                 break;
  38         default:
  39                 warn("wlen = %x, aborting.", wlen);
  40                 return -EINVAL;
  41         }
  42
  43         ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), operation,
  44                               USB_TYPE_VENDOR | USB_DIR_IN, addr, index, usb_buf,
  45                               sizeof(usb_buf), AU6610_USB_TIMEOUT);
  46
  47         if (ret < 0)
  48                 return ret;
  49
  50         switch (operation) {
  51         case AU6610_REQ_I2C_READ:
  52         case AU6610_REQ_USB_READ:
  53                 /* requested value is always 5th byte in buffer */
  54                 rbuf[0] = usb_buf[4];
  55         }
  56
  57         return ret;
  58 }
  59
  60 static int au6610_i2c_msg(struct dvb_usb_device *d, u8 addr, u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
  61 {
  62         u8 request;
  63         u8 wo = (rbuf == NULL || rlen == 0); /* write-only */
  64
  65         if (wo) {
  66                 request = AU6610_REQ_I2C_WRITE;
  67         } else { /* rw */
  68                 request = AU6610_REQ_I2C_READ;
  69         }
  70
  71         return au6610_usb_msg(d, request, addr, wbuf, wlen, rbuf, rlen);
  72 }
  73
  74
  75 /* I2C */
  76 static int au6610_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], int num)
  77 {
  78         struct dvb_usb_device *d = i2c_get_adapdata(adap);
  79         int i;
  80
  81         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
  82                 return -EAGAIN;
  83
  84         if (num > 2)
  85                 return -EINVAL;
  86
  87         for (i = 0; i < num; i++) {
  88                 /* write/read request */
  89                 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
  90                         if (au6610_i2c_msg(d, msg[i].addr, msg[i].buf,
  91                                            msg[i].len, msg[i+1].buf, msg[i+1].len) < 0)
  92                                 break;
  93                         i++;
  94                 } else if (au6610_i2c_msg(d, msg[i].addr, msg[i].buf,
  95                                                msg[i].len, NULL, 0) < 0)
  96                                 break;
  97         }
  98
  99         mutex_unlock(&d->i2c_mutex);
 100         return i;
 101 }
 102
 103
 104 static u32 au6610_i2c_func(struct i2c_adapter *adapter)
 105 {
 106         return I2C_FUNC_I2C;
 107 }
 108
 109 static struct i2c_algorithm au6610_i2c_algo = {
 110         .master_xfer   = au6610_i2c_xfer,
 111         .functionality = au6610_i2c_func,
 112 };
 113
 114 /* Callbacks for DVB USB */
 115 static int au6610_identify_state(struct usb_device *udev,
 116                                  struct dvb_usb_device_properties *props,
 117                                  struct dvb_usb_device_description **desc,
 118                                  int *cold)
 119 {
 120         *cold = 0;
 121         return 0;
 122 }
 123
 124 static struct zl10353_config au6610_zl10353_config = {
 125         .demod_address = 0x1e,
 126         .no_tuner = 1,
 127         .parallel_ts = 1,
 128 };
 129
 130
 131 static int au6610_zl10353_frontend_attach(struct dvb_usb_adapter *adap)
 132 {
 133         if ((adap->fe = dvb_attach(zl10353_attach, &au6610_zl10353_config,
 134                                    &adap->dev->i2c_adap)) != NULL) {
 135                 return 0;
 136         }
 137
 138         return -EIO;
 139 }
 140
 141 /* DVB USB Driver stuff */
 142 static struct dvb_usb_device_properties au6610_properties;
 143
 144 static int au6610_probe(struct usb_interface *intf, const struct usb_device_id *id)
 145 {
 146         struct dvb_usb_device *d;
 147         struct usb_host_interface *alt;
 148         int ret;
 149
 150         if (intf->num_altsetting < AU6610_ALTSETTING_COUNT)
 151                 return -ENODEV;
 152
 153         if ((ret = dvb_usb_device_init(intf, &au6610_properties, THIS_MODULE, &d)) == 0) {
 154                 alt = usb_altnum_to_altsetting(intf, AU6610_ALTSETTING);
 155
 156                 if (alt == NULL) {
 157                         deb_rc("no alt found!\n");
 158                         return -ENODEV;
 159                 }
 160                 ret = usb_set_interface(d->udev, alt->desc.bInterfaceNumber,
 161                                         alt->desc.bAlternateSetting);
 162         }
 163
 164         return ret;
 165 }
 166
 167
 168 static struct usb_device_id au6610_table [] = {
 169         { USB_DEVICE(USB_VID_ALCOR_MICRO, USB_PID_SIGMATEK_DVB_110) },
 170         { }             /* Terminating entry */
 171 };
 172 MODULE_DEVICE_TABLE (usb, au6610_table);
 173
 174 static struct dvb_usb_device_properties au6610_properties = {
 175         .caps = DVB_USB_IS_AN_I2C_ADAPTER,
 176         .usb_ctrl = DEVICE_SPECIFIC,
 177         .size_of_priv     = 0,
 178         .identify_state   = au6610_identify_state,
 179         .num_adapters = 1,
 180         .adapter = {
 181                 {
 182                         .frontend_attach  = au6610_zl10353_frontend_attach,
 183                         .tuner_attach     = qt1010_tuner_attach,
 184
 185                         .stream = {
 186                                 .type = USB_ISOC,
 187                                 .count = 5,
 188                                 .endpoint = 0x82,
 189                                 .u = {
 190                                         .isoc = {
 191                                                 .framesperurb = 40,
 192                                                 .framesize = 942,   /* maximum packet size */
 193                                                 .interval = 1.25,   /* 125 us */
 194                                         }
 195                                 }
 196                         },
 197                 }
 198         },
 199         .i2c_algo = &au6610_i2c_algo,
 200         .num_device_descs = 1,
 201         .devices = {
 202                 {
 203                         "Sigmatek DVB-110 DVB-T USB2.0",
 204                         { &au6610_table[0], NULL },
 205                         { NULL },
 206                 },
 207         }
 208 };
 209
 210 static struct usb_driver au6610_driver = {
 211         .name       = "dvb_usb_au6610",
 212         .probe      = au6610_probe,
 213         .disconnect = dvb_usb_device_exit,
 214         .id_table   = au6610_table,
 215 };
 216
 217 /* module stuff */
 218 static int __init au6610_module_init(void)
 219 {
 220         int ret;
 221
 222         if ((ret = usb_register(&au6610_driver))) {
 223                 err("usb_register failed. Error number %d", ret);
 224                 return ret;
 225         }
 226
 227         return 0;
 228 }
 229
 230 static void __exit au6610_module_exit(void)
 231 {
 232         /* deregister this driver from the USB subsystem */
 233         usb_deregister(&au6610_driver);
 234 }
 235
 236 module_init (au6610_module_init);
 237 module_exit (au6610_module_exit);
 238
 239 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 240 MODULE_DESCRIPTION("Driver Sigmatek DVB-110 DVB-T USB2.0 / AU6610");
 241 MODULE_VERSION("0.1");
 242 MODULE_LICENSE("GPL");