drivers/media/dvb/dvb-usb/au6610.c

   1 /*
   2  * DVB USB Linux driver for Alcor Micro AU6610 DVB-T USB2.0.
   3  *
   4  * Copyright (C) 2006 Antti Palosaari <crope@iki.fi>
   5  *
   6  *    This program is free software; you can redistribute it and/or modify
   7  *    it under the terms of the GNU General Public License as published by
   8  *    the Free Software Foundation; either version 2 of the License, or
   9  *    (at your option) any later version.
  10  *
  11  *    This program is distributed in the hope that it will be useful,
  12  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *    GNU General Public License for more details.
  15  *
  16  *    You should have received a copy of the GNU General Public License
  17  *    along with this program; if not, write to the Free Software
  18  *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 #include "au6610.h"
  22 #include "zl10353.h"
  23 #include "qt1010.h"
  24
  25 /* debug */
  26 static int dvb_usb_au6610_debug;
  27 module_param_named(debug, dvb_usb_au6610_debug, int, 0644);
  28 MODULE_PARM_DESC(debug, "set debugging level" DVB_USB_DEBUG_STATUS);
  29 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  30
  31 static int au6610_usb_msg(struct dvb_usb_device *d, u8 operation, u8 addr,
  32                           u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
  33 {
  34         int ret;
  35         u16 index;
  36         u8 usb_buf[6]; /* enough for all known requests,
  37                           read returns 5 and write 6 bytes */
  38         switch (wlen) {
  39         case 1:
  40                 index = wbuf[0] << 8;
  41                 break;
  42         case 2:
  43                 index = wbuf[0] << 8;
  44                 index += wbuf[1];
  45                 break;
  46         default:
  47                 warn("wlen = %x, aborting.", wlen);
  48                 return -EINVAL;
  49         }
  50
  51         ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), operation,
  52                               USB_TYPE_VENDOR|USB_DIR_IN, addr << 1, index,
  53                               usb_buf, sizeof(usb_buf), AU6610_USB_TIMEOUT);
  54         if (ret < 0)
  55                 return ret;
  56
  57         switch (operation) {
  58         case AU6610_REQ_I2C_READ:
  59         case AU6610_REQ_USB_READ:
  60                 /* requested value is always 5th byte in buffer */
  61                 rbuf[0] = usb_buf[4];
  62         }
  63
  64         return ret;
  65 }
  66
  67 static int au6610_i2c_msg(struct dvb_usb_device *d, u8 addr,
  68                           u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
  69 {
  70         u8 request;
  71         u8 wo = (rbuf == NULL || rlen == 0); /* write-only */
  72
  73         if (wo) {
  74                 request = AU6610_REQ_I2C_WRITE;
  75         } else { /* rw */
  76                 request = AU6610_REQ_I2C_READ;
  77         }
  78
  79         return au6610_usb_msg(d, request, addr, wbuf, wlen, rbuf, rlen);
  80 }
  81
  82
  83 /* I2C */
  84 static int au6610_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
  85                            int num)
  86 {
  87         struct dvb_usb_device *d = i2c_get_adapdata(adap);
  88         int i;
  89
  90         if (num > 2)
  91                 return -EINVAL;
  92
  93         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
  94                 return -EAGAIN;
  95
  96         for (i = 0; i < num; i++) {
  97                 /* write/read request */
  98                 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
  99                         if (au6610_i2c_msg(d, msg[i].addr, msg[i].buf,
 100                                            msg[i].len, msg[i+1].buf,
 101                                            msg[i+1].len) < 0)
 102                                 break;
 103                         i++;
 104                 } else if (au6610_i2c_msg(d, msg[i].addr, msg[i].buf,
 105                                                msg[i].len, NULL, 0) < 0)
 106                                 break;
 107         }
 108
 109         mutex_unlock(&d->i2c_mutex);
 110         return i;
 111 }
 112
 113
 114 static u32 au6610_i2c_func(struct i2c_adapter *adapter)
 115 {
 116         return I2C_FUNC_I2C;
 117 }
 118
 119 static struct i2c_algorithm au6610_i2c_algo = {
 120         .master_xfer   = au6610_i2c_xfer,
 121         .functionality = au6610_i2c_func,
 122 };
 123
 124 /* Callbacks for DVB USB */
 125 static struct zl10353_config au6610_zl10353_config = {
 126         .demod_address = 0x0f,
 127         .no_tuner = 1,
 128         .parallel_ts = 1,
 129 };
 130
 131 static int au6610_zl10353_frontend_attach(struct dvb_usb_adapter *adap)
 132 {
 133         adap->fe = dvb_attach(zl10353_attach, &au6610_zl10353_config,
 134                 &adap->dev->i2c_adap);
 135         if (adap->fe == NULL)
 136                 return -ENODEV;
 137
 138         return 0;
 139 }
 140
 141 static struct qt1010_config au6610_qt1010_config = {
 142         .i2c_address = 0x62
 143 };
 144
 145 static int au6610_qt1010_tuner_attach(struct dvb_usb_adapter *adap)
 146 {
 147         return dvb_attach(qt1010_attach,
 148                           adap->fe, &adap->dev->i2c_adap,
 149                           &au6610_qt1010_config) == NULL ? -ENODEV : 0;
 150 }
 151
 152 /* DVB USB Driver stuff */
 153 static struct dvb_usb_device_properties au6610_properties;
 154
 155 static int au6610_probe(struct usb_interface *intf,
 156                         const struct usb_device_id *id)
 157 {
 158         struct dvb_usb_device *d;
 159         struct usb_host_interface *alt;
 160         int ret;
 161
 162         if (intf->num_altsetting < AU6610_ALTSETTING_COUNT)
 163                 return -ENODEV;
 164
 165         ret = dvb_usb_device_init(intf, &au6610_properties, THIS_MODULE, &d,
 166                                   adapter_nr);
 167         if (ret == 0) {
 168                 alt = usb_altnum_to_altsetting(intf, AU6610_ALTSETTING);
 169
 170                 if (alt == NULL) {
 171                         deb_info("%s: no alt found!\n", __func__);
 172                         return -ENODEV;
 173                 }
 174                 ret = usb_set_interface(d->udev, alt->desc.bInterfaceNumber,
 175                                         alt->desc.bAlternateSetting);
 176         }
 177
 178         return ret;
 179 }
 180
 181 static struct usb_device_id au6610_table [] = {
 182         { USB_DEVICE(USB_VID_ALCOR_MICRO, USB_PID_SIGMATEK_DVB_110) },
 183         { }             /* Terminating entry */
 184 };
 185 MODULE_DEVICE_TABLE(usb, au6610_table);
 186
 187 static struct dvb_usb_device_properties au6610_properties = {
 188         .caps = DVB_USB_IS_AN_I2C_ADAPTER,
 189
 190         .usb_ctrl = DEVICE_SPECIFIC,
 191
 192         .size_of_priv = 0,
 193
 194         .num_adapters = 1,
 195         .adapter = {
 196                 {
 197                         .frontend_attach  = au6610_zl10353_frontend_attach,
 198                         .tuner_attach     = au6610_qt1010_tuner_attach,
 199
 200                         .stream = {
 201                                 .type = USB_ISOC,
 202                                 .count = 5,
 203                                 .endpoint = 0x82,
 204                                 .u = {
 205                                         .isoc = {
 206                                                 .framesperurb = 40,
 207                                                 .framesize = 942,
 208                                                 .interval = 1,
 209                                         }
 210                                 }
 211                         },
 212                 }
 213         },
 214
 215         .i2c_algo = &au6610_i2c_algo,
 216
 217         .num_device_descs = 1,
 218         .devices = {
 219                 {
 220                         .name = "Sigmatek DVB-110 DVB-T USB2.0",
 221                         .cold_ids = {NULL},
 222                         .warm_ids = {&au6610_table[0], 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         ret = usb_register(&au6610_driver);
 240         if (ret)
 241                 err("usb_register failed. Error number %d", ret);
 242
 243         return ret;
 244 }
 245
 246 static void __exit au6610_module_exit(void)
 247 {
 248         /* deregister this driver from the USB subsystem */
 249         usb_deregister(&au6610_driver);
 250 }
 251
 252 module_init(au6610_module_init);
 253 module_exit(au6610_module_exit);
 254
 255 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 256 MODULE_DESCRIPTION("Driver for Alcor Micro AU6610 DVB-T USB2.0");
 257 MODULE_VERSION("0.1");
 258 MODULE_LICENSE("GPL");