kernel/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 static int dtv5100_i2c_msg(struct dvb_usb_device *d, u8 addr,
  35                            u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
  36 {
  37         u8 request;
  38         u8 type;
  39         u16 value;
  40         u16 index;
  41
  42         switch (wlen) {
  43         case 1:
  44                 /* write { reg }, read { value } */
  45                 request = (addr == DTV5100_DEMOD_ADDR ? DTV5100_DEMOD_READ :
  46                                                         DTV5100_TUNER_READ);
  47                 type = USB_TYPE_VENDOR | USB_DIR_IN;
  48                 value = 0;
  49                 break;
  50         case 2:
  51                 /* write { reg, value } */
  52                 request = (addr == DTV5100_DEMOD_ADDR ? DTV5100_DEMOD_WRITE :
  53                                                         DTV5100_TUNER_WRITE);
  54                 type = USB_TYPE_VENDOR | USB_DIR_OUT;
  55                 value = wbuf[1];
  56                 break;
  57         default:
  58                 warn("wlen = %x, aborting.", wlen);
  59                 return -EINVAL;
  60         }
  61         index = (addr << 8) + wbuf[0];
  62
  63         msleep(1); /* avoid I2C errors */
  64         return usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), request,
  65                                type, value, index, rbuf, rlen,
  66                                DTV5100_USB_TIMEOUT);
  67 }
  68
  69 /* I2C */
  70 static int dtv5100_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
  71                             int num)
  72 {
  73         struct dvb_usb_device *d = i2c_get_adapdata(adap);
  74         int i;
  75
  76         if (num > 2)
  77                 return -EINVAL;
  78
  79         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
  80                 return -EAGAIN;
  81
  82         for (i = 0; i < num; i++) {
  83                 /* write/read request */
  84                 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
  85                         if (dtv5100_i2c_msg(d, msg[i].addr, msg[i].buf,
  86                                             msg[i].len, msg[i+1].buf,
  87                                             msg[i+1].len) < 0)
  88                                 break;
  89                         i++;
  90                 } else if (dtv5100_i2c_msg(d, msg[i].addr, msg[i].buf,
  91                                            msg[i].len, NULL, 0) < 0)
  92                                 break;
  93         }
  94
  95         mutex_unlock(&d->i2c_mutex);
  96         return i;
  97 }
  98
  99 static u32 dtv5100_i2c_func(struct i2c_adapter *adapter)
 100 {
 101         return I2C_FUNC_I2C;
 102 }
 103
 104 static struct i2c_algorithm dtv5100_i2c_algo = {
 105         .master_xfer   = dtv5100_i2c_xfer,
 106         .functionality = dtv5100_i2c_func,
 107 };
 108
 109 /* Callbacks for DVB USB */
 110 static struct zl10353_config dtv5100_zl10353_config = {
 111         .demod_address = DTV5100_DEMOD_ADDR,
 112         .no_tuner = 1,
 113         .parallel_ts = 1,
 114 };
 115
 116 static int dtv5100_frontend_attach(struct dvb_usb_adapter *adap)
 117 {
 118         adap->fe_adap[0].fe = dvb_attach(zl10353_attach, &dtv5100_zl10353_config,
 119                               &adap->dev->i2c_adap);
 120         if (adap->fe_adap[0].fe == NULL)
 121                 return -EIO;
 122
 123         /* disable i2c gate, or it won't work... is this safe? */
 124         adap->fe_adap[0].fe->ops.i2c_gate_ctrl = NULL;
 125
 126         return 0;
 127 }
 128
 129 static struct qt1010_config dtv5100_qt1010_config = {
 130         .i2c_address = DTV5100_TUNER_ADDR
 131 };
 132
 133 static int dtv5100_tuner_attach(struct dvb_usb_adapter *adap)
 134 {
 135         return dvb_attach(qt1010_attach,
 136                           adap->fe_adap[0].fe, &adap->dev->i2c_adap,
 137                           &dtv5100_qt1010_config) == NULL ? -ENODEV : 0;
 138 }
 139
 140 /* DVB USB Driver stuff */
 141 static struct dvb_usb_device_properties dtv5100_properties;
 142
 143 static int dtv5100_probe(struct usb_interface *intf,
 144                          const struct usb_device_id *id)
 145 {
 146         int i, ret;
 147         struct usb_device *udev = interface_to_usbdev(intf);
 148
 149         /* initialize non qt1010/zl10353 part? */
 150         for (i = 0; dtv5100_init[i].request; i++) {
 151                 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
 152                                       dtv5100_init[i].request,
 153                                       USB_TYPE_VENDOR | USB_DIR_OUT,
 154                                       dtv5100_init[i].value,
 155                                       dtv5100_init[i].index, NULL, 0,
 156                                       DTV5100_USB_TIMEOUT);
 157                 if (ret)
 158                         return ret;
 159         }
 160
 161         ret = dvb_usb_device_init(intf, &dtv5100_properties,
 162                                   THIS_MODULE, NULL, adapter_nr);
 163         if (ret)
 164                 return ret;
 165
 166         return 0;
 167 }
 168
 169 static struct usb_device_id dtv5100_table[] = {
 170         { USB_DEVICE(0x06be, 0xa232) },
 171         { }             /* Terminating entry */
 172 };
 173 MODULE_DEVICE_TABLE(usb, dtv5100_table);
 174
 175 static struct dvb_usb_device_properties dtv5100_properties = {
 176         .caps = DVB_USB_IS_AN_I2C_ADAPTER,
 177         .usb_ctrl = DEVICE_SPECIFIC,
 178
 179         .size_of_priv = 0,
 180
 181         .num_adapters = 1,
 182         .adapter = {{
 183                 .num_frontends = 1,
 184                 .fe = {{
 185                 .frontend_attach = dtv5100_frontend_attach,
 186                 .tuner_attach    = dtv5100_tuner_attach,
 187
 188                 .stream = {
 189                         .type = USB_BULK,
 190                         .count = 8,
 191                         .endpoint = 0x82,
 192                         .u = {
 193                                 .bulk = {
 194                                         .buffersize = 4096,
 195                                 }
 196                         }
 197                 },
 198                 }},
 199         } },
 200
 201         .i2c_algo = &dtv5100_i2c_algo,
 202
 203         .num_device_descs = 1,
 204         .devices = {
 205                 {
 206                         .name = "AME DTV-5100 USB2.0 DVB-T",
 207                         .cold_ids = { NULL },
 208                         .warm_ids = { &dtv5100_table[0], NULL },
 209                 },
 210         }
 211 };
 212
 213 static struct usb_driver dtv5100_driver = {
 214         .name           = "dvb_usb_dtv5100",
 215         .probe          = dtv5100_probe,
 216         .disconnect     = dvb_usb_device_exit,
 217         .id_table       = dtv5100_table,
 218 };
 219
 220 module_usb_driver(dtv5100_driver);
 221
 222 MODULE_AUTHOR(DRIVER_AUTHOR);
 223 MODULE_DESCRIPTION(DRIVER_DESC);
 224 MODULE_LICENSE("GPL");