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