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 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  23
  24 static int au6610_usb_msg(struct dvb_usb_device *d, u8 operation, u8 addr,
  25                           u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
  26 {
  27         int ret;
  28         u16 index;
  29         u8 usb_buf[6]; /* enough for all known requests,
  30                           read returns 5 and write 6 bytes */
  31         switch (wlen) {
  32         case 1:
  33                 index = wbuf[0] << 8;
  34                 break;
  35         case 2:
  36                 index = wbuf[0] << 8;
  37                 index += wbuf[1];
  38                 break;
  39         default:
  40                 warn("wlen = %x, aborting.", wlen);
  41                 return -EINVAL;
  42         }
  43
  44         ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), operation,
  45                               USB_TYPE_VENDOR|USB_DIR_IN, addr << 1, index, usb_buf,
  46                               sizeof(usb_buf), AU6610_USB_TIMEOUT);
  47
  48         if (ret < 0)
  49                 return ret;
  50
  51         switch (operation) {
  52         case AU6610_REQ_I2C_READ:
  53         case AU6610_REQ_USB_READ:
  54                 /* requested value is always 5th byte in buffer */
  55                 rbuf[0] = usb_buf[4];
  56         }
  57
  58         return ret;
  59 }
  60
  61 static int au6610_i2c_msg(struct dvb_usb_device *d, u8 addr,
  62                           u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
  63 {
  64         u8 request;
  65         u8 wo = (rbuf == NULL || rlen == 0); /* write-only */
  66
  67         if (wo) {
  68                 request = AU6610_REQ_I2C_WRITE;
  69         } else { /* rw */
  70                 request = AU6610_REQ_I2C_READ;
  71         }
  72
  73         return au6610_usb_msg(d, request, addr, wbuf, wlen, rbuf, rlen);
  74 }
  75
  76
  77 /* I2C */
  78 static int au6610_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
  79                            int num)
  80 {
  81         struct dvb_usb_device *d = i2c_get_adapdata(adap);
  82         int i;
  83
  84         if (num > 2)
  85                 return -EINVAL;
  86
  87         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
  88                 return -EAGAIN;
  89
  90         for (i = 0; i < num; i++) {
  91                 /* write/read request */
  92                 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
  93                         if (au6610_i2c_msg(d, msg[i].addr, msg[i].buf,
  94                                            msg[i].len, msg[i+1].buf,
  95                                            msg[i+1].len) < 0)
  96                                 break;
  97                         i++;
  98                 } else if (au6610_i2c_msg(d, msg[i].addr, msg[i].buf,
  99                                                msg[i].len, NULL, 0) < 0)
 100                                 break;
 101         }
 102
 103         mutex_unlock(&d->i2c_mutex);
 104         return i;
 105 }
 106
 107
 108 static u32 au6610_i2c_func(struct i2c_adapter *adapter)
 109 {
 110         return I2C_FUNC_I2C;
 111 }
 112
 113 static struct i2c_algorithm au6610_i2c_algo = {
 114         .master_xfer   = au6610_i2c_xfer,
 115         .functionality = au6610_i2c_func,
 116 };
 117
 118 /* Callbacks for DVB USB */
 119 static int au6610_identify_state(struct usb_device *udev,
 120                                  struct dvb_usb_device_properties *props,
 121                                  struct dvb_usb_device_description **desc,
 122                                  int *cold)
 123 {
 124         *cold = 0;
 125         return 0;
 126 }
 127
 128 static struct zl10353_config au6610_zl10353_config = {
 129         .demod_address = 0x0f,
 130         .no_tuner = 1,
 131         .parallel_ts = 1,
 132 };
 133
 134 static int au6610_zl10353_frontend_attach(struct dvb_usb_adapter *adap)
 135 {
 136         if ((adap->fe = dvb_attach(zl10353_attach, &au6610_zl10353_config,
 137                                    &adap->dev->i2c_adap)) != NULL) {
 138                 return 0;
 139         }
 140
 141         return -EIO;
 142 }
 143
 144 static struct qt1010_config au6610_qt1010_config = {
 145         .i2c_address = 0x62
 146 };
 147
 148 static int au6610_qt1010_tuner_attach(struct dvb_usb_adapter *adap)
 149 {
 150         return dvb_attach(qt1010_attach,
 151                           adap->fe, &adap->dev->i2c_adap,
 152                           &au6610_qt1010_config) == NULL ? -ENODEV : 0;
 153 }
 154
 155 /* DVB USB Driver stuff */
 156 static struct dvb_usb_device_properties au6610_properties;
 157
 158 static int au6610_probe(struct usb_interface *intf,
 159                         const struct usb_device_id *id)
 160 {
 161         struct dvb_usb_device *d;
 162         struct usb_host_interface *alt;
 163         int ret;
 164
 165         if (intf->num_altsetting < AU6610_ALTSETTING_COUNT)
 166                 return -ENODEV;
 167
 168         ret = dvb_usb_device_init(intf, &au6610_properties, THIS_MODULE, &d,
 169                                   adapter_nr);
 170         if (ret == 0) {
 171                 alt = usb_altnum_to_altsetting(intf, AU6610_ALTSETTING);
 172
 173                 if (alt == NULL) {
 174                         deb_rc("no alt found!\n");
 175                         return -ENODEV;
 176                 }
 177                 ret = usb_set_interface(d->udev, alt->desc.bInterfaceNumber,
 178                                         alt->desc.bAlternateSetting);
 179         }
 180
 181         return ret;
 182 }
 183
 184
 185 static struct usb_device_id au6610_table [] = {
 186         { USB_DEVICE(USB_VID_ALCOR_MICRO, USB_PID_SIGMATEK_DVB_110) },
 187         { }             /* Terminating entry */
 188 };
 189 MODULE_DEVICE_TABLE (usb, au6610_table);
 190
 191 static struct dvb_usb_device_properties au6610_properties = {
 192         .caps = DVB_USB_IS_AN_I2C_ADAPTER,
 193         .usb_ctrl = DEVICE_SPECIFIC,
 194         .size_of_priv     = 0,
 195         .identify_state   = au6610_identify_state,
 196         .num_adapters = 1,
 197         .adapter = {
 198                 {
 199                         .frontend_attach  = au6610_zl10353_frontend_attach,
 200                         .tuner_attach     = au6610_qt1010_tuner_attach,
 201
 202                         .stream = {
 203                                 .type = USB_ISOC,
 204                                 .count = 5,
 205                                 .endpoint = 0x82,
 206                                 .u = {
 207                                         .isoc = {
 208                                                 .framesperurb = 40,
 209                                                 .framesize = 942,   /* maximum packet size */
 210                                                 .interval = 1.25,   /* 125 us */
 211                                         }
 212                                 }
 213                         },
 214                 }
 215         },
 216         .i2c_algo = &au6610_i2c_algo,
 217         .num_device_descs = 1,
 218         .devices = {
 219                 {
 220                         "Sigmatek DVB-110 DVB-T USB2.0",
 221                         { &au6610_table[0], NULL },
 222                         { NULL },
 223                 },
 224         }
 225 };
 226
 227 static struct usb_driver au6610_driver = {
 228         .name       = "dvb_usb_au6610",
 229         .probe      = au6610_probe,
 230         .disconnect = dvb_usb_device_exit,
 231         .id_table   = au6610_table,
 232 };
 233
 234 /* module stuff */
 235 static int __init au6610_module_init(void)
 236 {
 237         int ret;
 238
 239         if ((ret = usb_register(&au6610_driver))) {
 240                 err("usb_register failed. Error number %d", ret);
 241                 return ret;
 242         }
 243
 244         return 0;
 245 }
 246
 247 static void __exit au6610_module_exit(void)
 248 {
 249         /* deregister this driver from the USB subsystem */
 250         usb_deregister(&au6610_driver);
 251 }
 252
 253 module_init (au6610_module_init);
 254 module_exit (au6610_module_exit);
 255
 256 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 257 MODULE_DESCRIPTION("Driver Sigmatek DVB-110 DVB-T USB2.0 / AU6610");
 258 MODULE_VERSION("0.1");
 259 MODULE_LICENSE("GPL");