drivers/media/usb/dvb-usb/dtv5100.c

   1 /*
   2  * DVB USB Linux driver for AME DTV-5100 USB2.0 DVB-T
   3  *
   4  * Copyright (C) 2008  Antoine Jacquet <royale@zerezo.com>
   5  * http://royale.zerezo.com/dtv5100/
   6  *
   7  * Inspired by gl861.c and au6610.c drivers
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23
  24 #include "dtv5100.h"
  25 #include "zl10353.h"
  26 #include "qt1010.h"
  27
  28 /* debug */
  29 static int dvb_usb_dtv5100_debug;
  30 module_param_named(debug, dvb_usb_dtv5100_debug, int, 0644);
  31 MODULE_PARM_DESC(debug, "set debugging level" DVB_USB_DEBUG_STATUS);
  32 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  33
  34 struct dtv5100_state {
  35         unsigned char data[80];
  36 };
  37
  38 static int dtv5100_i2c_msg(struct dvb_usb_device *d, u8 addr,
  39                            u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
  40 {
  41         struct dtv5100_state *st = d->priv;
  42         u8 request;
  43         u8 type;
  44         u16 value;
  45         u16 index;
  46
  47         switch (wlen) {
  48         case 1:
  49                 /* write { reg }, read { value } */
  50                 request = (addr == DTV5100_DEMOD_ADDR ? DTV5100_DEMOD_READ :
  51                                                         DTV5100_TUNER_READ);
  52                 type = USB_TYPE_VENDOR | USB_DIR_IN;
  53                 value = 0;
  54                 break;
  55         case 2:
  56                 /* write { reg, value } */
  57                 request = (addr == DTV5100_DEMOD_ADDR ? DTV5100_DEMOD_WRITE :
  58                                                         DTV5100_TUNER_WRITE);
  59                 type = USB_TYPE_VENDOR | USB_DIR_OUT;
  60                 value = wbuf[1];
  61                 break;
  62         default:
  63                 warn("wlen = %x, aborting.", wlen);
  64                 return -EINVAL;
  65         }
  66         index = (addr << 8) + wbuf[0];
  67
  68         memcpy(st->data, rbuf, rlen);
  69         msleep(1); /* avoid I2C errors */
  70         return usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), request,
  71                                type, value, index, st->data, rlen,
  72                                DTV5100_USB_TIMEOUT);
  73 }
  74
  75 /* I2C */
  76 static int dtv5100_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 (num > 2)
  83                 return -EINVAL;
  84
  85         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
  86                 return -EAGAIN;
  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 (dtv5100_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 (dtv5100_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 static u32 dtv5100_i2c_func(struct i2c_adapter *adapter)
 106 {
 107         return I2C_FUNC_I2C;
 108 }
 109
 110 static struct i2c_algorithm dtv5100_i2c_algo = {
 111         .master_xfer   = dtv5100_i2c_xfer,
 112         .functionality = dtv5100_i2c_func,
 113 };
 114
 115 /* Callbacks for DVB USB */
 116 static struct zl10353_config dtv5100_zl10353_config = {
 117         .demod_address = DTV5100_DEMOD_ADDR,
 118         .no_tuner = 1,
 119         .parallel_ts = 1,
 120 };
 121
 122 static int dtv5100_frontend_attach(struct dvb_usb_adapter *adap)
 123 {
 124         adap->fe_adap[0].fe = dvb_attach(zl10353_attach, &dtv5100_zl10353_config,
 125                               &adap->dev->i2c_adap);
 126         if (adap->fe_adap[0].fe == NULL)
 127                 return -EIO;
 128
 129         /* disable i2c gate, or it won't work... is this safe? */
 130         adap->fe_adap[0].fe->ops.i2c_gate_ctrl = NULL;
 131
 132         return 0;
 133 }
 134
 135 static struct qt1010_config dtv5100_qt1010_config = {
 136         .i2c_address = DTV5100_TUNER_ADDR
 137 };
 138
 139 static int dtv5100_tuner_attach(struct dvb_usb_adapter *adap)
 140 {
 141         return dvb_attach(qt1010_attach,
 142                           adap->fe_adap[0].fe, &adap->dev->i2c_adap,
 143                           &dtv5100_qt1010_config) == NULL ? -ENODEV : 0;
 144 }
 145
 146 /* DVB USB Driver stuff */
 147 static struct dvb_usb_device_properties dtv5100_properties;
 148
 149 static int dtv5100_probe(struct usb_interface *intf,
 150                          const struct usb_device_id *id)
 151 {
 152         int i, ret;
 153         struct usb_device *udev = interface_to_usbdev(intf);
 154
 155         /* initialize non qt1010/zl10353 part? */
 156         for (i = 0; dtv5100_init[i].request; i++) {
 157                 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
 158                                       dtv5100_init[i].request,
 159                                       USB_TYPE_VENDOR | USB_DIR_OUT,
 160                                       dtv5100_init[i].value,
 161                                       dtv5100_init[i].index, NULL, 0,
 162                                       DTV5100_USB_TIMEOUT);
 163                 if (ret)
 164                         return ret;
 165         }
 166
 167         ret = dvb_usb_device_init(intf, &dtv5100_properties,
 168                                   THIS_MODULE, NULL, adapter_nr);
 169         if (ret)
 170                 return ret;
 171
 172         return 0;
 173 }
 174
 175 static struct usb_device_id dtv5100_table[] = {
 176         { USB_DEVICE(0x06be, 0xa232) },
 177         { }             /* Terminating entry */
 178 };
 179 MODULE_DEVICE_TABLE(usb, dtv5100_table);
 180
 181 static struct dvb_usb_device_properties dtv5100_properties = {
 182         .caps = DVB_USB_IS_AN_I2C_ADAPTER,
 183         .usb_ctrl = DEVICE_SPECIFIC,
 184
 185         .size_of_priv = sizeof(struct dtv5100_state),
 186
 187         .num_adapters = 1,
 188         .adapter = {{
 189                 .num_frontends = 1,
 190                 .fe = {{
 191                 .frontend_attach = dtv5100_frontend_attach,
 192                 .tuner_attach    = dtv5100_tuner_attach,
 193
 194                 .stream = {
 195                         .type = USB_BULK,
 196                         .count = 8,
 197                         .endpoint = 0x82,
 198                         .u = {
 199                                 .bulk = {
 200                                         .buffersize = 4096,
 201                                 }
 202                         }
 203                 },
 204                 }},
 205         } },
 206
 207         .i2c_algo = &dtv5100_i2c_algo,
 208
 209         .num_device_descs = 1,
 210         .devices = {
 211                 {
 212                         .name = "AME DTV-5100 USB2.0 DVB-T",
 213                         .cold_ids = { NULL },
 214                         .warm_ids = { &dtv5100_table[0], NULL },
 215                 },
 216         }
 217 };
 218
 219 static struct usb_driver dtv5100_driver = {
 220         .name           = "dvb_usb_dtv5100",
 221         .probe          = dtv5100_probe,
 222         .disconnect     = dvb_usb_device_exit,
 223         .id_table       = dtv5100_table,
 224 };
 225
 226 module_usb_driver(dtv5100_driver);
 227
 228 MODULE_AUTHOR(DRIVER_AUTHOR);
 229 MODULE_DESCRIPTION(DRIVER_DESC);
 230 MODULE_LICENSE("GPL");