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