drivers/media/dvb/dvb-usb/ttusb2.c

   1 /* DVB USB compliant linux driver for Technotrend DVB USB boxes and clones
   2  * (e.g. Pinnacle 400e DVB-S USB2.0).
   3  *
   4  * The Pinnacle 400e uses the same protocol as the Technotrend USB1.1 boxes.
   5  *
   6  * TDA8263 + TDA10086
   7  *
   8  * I2C addresses:
   9  * 0x08 - LNBP21PD   - LNB power supply
  10  * 0x0e - TDA10086   - Demodulator
  11  * 0x50 - FX2 eeprom
  12  * 0x60 - TDA8263    - Tuner
  13  * 0x78 ???
  14  *
  15  * Copyright (c) 2002 Holger Waechtler <holger@convergence.de>
  16  * Copyright (c) 2003 Felix Domke <tmbinc@elitedvb.net>
  17  * Copyright (C) 2005-6 Patrick Boettcher <pb@linuxtv.org>
  18  *
  19  *      This program is free software; you can redistribute it and/or modify it
  20  *      under the terms of the GNU General Public License as published by the Free
  21  *      Software Foundation, version 2.
  22  *
  23  * see Documentation/dvb/README.dvb-usb for more information
  24  */
  25 #define DVB_USB_LOG_PREFIX "ttusb2"
  26 #include "dvb-usb.h"
  27
  28 #include "ttusb2.h"
  29
  30 #include "tda826x.h"
  31 #include "tda10086.h"
  32 #include "lnbp21.h"
  33
  34 /* debug */
  35 static int dvb_usb_ttusb2_debug;
  36 #define deb_info(args...)   dprintk(dvb_usb_ttusb2_debug,0x01,args)
  37 module_param_named(debug,dvb_usb_ttusb2_debug, int, 0644);
  38 MODULE_PARM_DESC(debug, "set debugging level (1=info (or-able))." DVB_USB_DEBUG_STATUS);
  39
  40 struct ttusb2_state {
  41         u8 id;
  42 };
  43
  44 static int ttusb2_msg(struct dvb_usb_device *d, u8 cmd,
  45                 u8 *wbuf, int wlen, u8 *rbuf, int rlen)
  46 {
  47         struct ttusb2_state *st = d->priv;
  48         u8 s[wlen+4],r[64] = { 0 };
  49         int ret = 0;
  50
  51         memset(s,0,wlen+4);
  52
  53         s[0] = 0xaa;
  54         s[1] = ++st->id;
  55         s[2] = cmd;
  56         s[3] = wlen;
  57         memcpy(&s[4],wbuf,wlen);
  58
  59         ret = dvb_usb_generic_rw(d, s, wlen+4, r, 64, 0);
  60
  61         if (ret  != 0 ||
  62                 r[0] != 0x55 ||
  63                 r[1] != s[1] ||
  64                 r[2] != cmd ||
  65                 (rlen > 0 && r[3] != rlen)) {
  66                 warn("there might have been an error during control message transfer. (rlen = %d, was %d)",rlen,r[3]);
  67                 return -EIO;
  68         }
  69
  70         if (rlen > 0)
  71                 memcpy(rbuf, &r[4], rlen);
  72
  73         return 0;
  74 }
  75
  76 static int ttusb2_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)
  77 {
  78         struct dvb_usb_device *d = i2c_get_adapdata(adap);
  79         static u8 obuf[60], ibuf[60];
  80         int i,read;
  81
  82         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
  83                 return -EAGAIN;
  84
  85         if (num > 2)
  86                 warn("more than 2 i2c messages at a time is not handled yet. TODO.");
  87
  88         for (i = 0; i < num; i++) {
  89                 read = i+1 < num && (msg[i+1].flags & I2C_M_RD);
  90
  91                 obuf[0] = (msg[i].addr << 1) | read;
  92                 obuf[1] = msg[i].len;
  93
  94                 /* read request */
  95                 if (read)
  96                         obuf[2] = msg[i+1].len;
  97                 else
  98                         obuf[2] = 0;
  99
 100                 memcpy(&obuf[3],msg[i].buf,msg[i].len);
 101
 102                 if (ttusb2_msg(d, CMD_I2C_XFER, obuf, msg[i].len+3, ibuf, obuf[2] + 3) < 0) {
 103                         err("i2c transfer failed.");
 104                         break;
 105                 }
 106
 107                 if (read) {
 108                         memcpy(msg[i+1].buf,&ibuf[3],msg[i+1].len);
 109                         i++;
 110                 }
 111         }
 112
 113         mutex_unlock(&d->i2c_mutex);
 114         return i;
 115 }
 116
 117 static u32 ttusb2_i2c_func(struct i2c_adapter *adapter)
 118 {
 119         return I2C_FUNC_I2C;
 120 }
 121
 122 static struct i2c_algorithm ttusb2_i2c_algo = {
 123         .master_xfer   = ttusb2_i2c_xfer,
 124         .functionality = ttusb2_i2c_func,
 125 };
 126
 127 /* Callbacks for DVB USB */
 128 static int ttusb2_identify_state (struct usb_device *udev, struct
 129                 dvb_usb_device_properties *props, struct dvb_usb_device_description **desc,
 130                 int *cold)
 131 {
 132         *cold = udev->descriptor.iManufacturer == 0 && udev->descriptor.iProduct == 0;
 133         return 0;
 134 }
 135
 136 static int ttusb2_power_ctrl(struct dvb_usb_device *d, int onoff)
 137 {
 138         u8 b = onoff;
 139         ttusb2_msg(d, CMD_POWER, &b, 0, NULL, 0);
 140         return ttusb2_msg(d, CMD_POWER, &b, 1, NULL, 0);
 141 }
 142
 143
 144 static struct tda10086_config tda10086_config = {
 145         .demod_address = 0x0e,
 146         .invert = 0,
 147 };
 148
 149 static int ttusb2_frontend_attach(struct dvb_usb_adapter *adap)
 150 {
 151         if (usb_set_interface(adap->dev->udev,0,3) < 0)
 152                 err("set interface to alts=3 failed");
 153
 154         if ((adap->fe = dvb_attach(tda10086_attach, &tda10086_config, &adap->dev->i2c_adap)) == NULL) {
 155                 deb_info("TDA10086 attach failed\n");
 156                 return -ENODEV;
 157         }
 158
 159         return 0;
 160 }
 161
 162 static int ttusb2_tuner_attach(struct dvb_usb_adapter *adap)
 163 {
 164         if (dvb_attach(tda826x_attach, adap->fe, 0x60, &adap->dev->i2c_adap, 0) == NULL) {
 165                 deb_info("TDA8263 attach failed\n");
 166                 return -ENODEV;
 167         }
 168
 169         if (dvb_attach(lnbp21_attach, adap->fe, &adap->dev->i2c_adap, 0, 0) == NULL) {
 170                 deb_info("LNBP21 attach failed\n");
 171                 return -ENODEV;
 172         }
 173         return 0;
 174 }
 175
 176 /* DVB USB Driver stuff */
 177 static struct dvb_usb_device_properties ttusb2_properties;
 178
 179 static int ttusb2_probe(struct usb_interface *intf,
 180                 const struct usb_device_id *id)
 181 {
 182         return dvb_usb_device_init(intf,&ttusb2_properties,THIS_MODULE,NULL);
 183 }
 184
 185 static struct usb_device_id ttusb2_table [] = {
 186                 { USB_DEVICE(USB_VID_PINNACLE, USB_PID_PCTV_400E) },
 187                 {}              /* Terminating entry */
 188 };
 189 MODULE_DEVICE_TABLE (usb, ttusb2_table);
 190
 191 static struct dvb_usb_device_properties ttusb2_properties = {
 192         .caps = DVB_USB_IS_AN_I2C_ADAPTER,
 193
 194         .usb_ctrl = CYPRESS_FX2,
 195         .firmware = "dvb-usb-pctv-400e-01.fw",
 196
 197         .size_of_priv = sizeof(struct ttusb2_state),
 198
 199         .num_adapters = 1,
 200         .adapter = {
 201                 {
 202                         .streaming_ctrl   = NULL, // ttusb2_streaming_ctrl,
 203
 204                         .frontend_attach  = ttusb2_frontend_attach,
 205                         .tuner_attach     = ttusb2_tuner_attach,
 206
 207                         /* parameter for the MPEG2-data transfer */
 208                         .stream = {
 209                                 .type = USB_ISOC,
 210                                 .count = 5,
 211                                 .endpoint = 0x02,
 212                                 .u = {
 213                                         .isoc = {
 214                                                 .framesperurb = 4,
 215                                                 .framesize = 940,
 216                                                 .interval = 1,
 217                                         }
 218                                 }
 219                         }
 220                 }
 221         },
 222
 223         .power_ctrl       = ttusb2_power_ctrl,
 224         .identify_state   = ttusb2_identify_state,
 225
 226         .i2c_algo         = &ttusb2_i2c_algo,
 227
 228         .generic_bulk_ctrl_endpoint = 0x01,
 229
 230         .num_device_descs = 1,
 231         .devices = {
 232                 {   "Pinnacle 400e DVB-S USB2.0",
 233                         { &ttusb2_table[0], NULL },
 234                         { NULL },
 235                 },
 236         }
 237 };
 238
 239 static struct usb_driver ttusb2_driver = {
 240         .name           = "dvb_usb_ttusb2",
 241         .probe          = ttusb2_probe,
 242         .disconnect = dvb_usb_device_exit,
 243         .id_table       = ttusb2_table,
 244 };
 245
 246 /* module stuff */
 247 static int __init ttusb2_module_init(void)
 248 {
 249         int result;
 250         if ((result = usb_register(&ttusb2_driver))) {
 251                 err("usb_register failed. Error number %d",result);
 252                 return result;
 253         }
 254
 255         return 0;
 256 }
 257
 258 static void __exit ttusb2_module_exit(void)
 259 {
 260         /* deregister this driver from the USB subsystem */
 261         usb_deregister(&ttusb2_driver);
 262 }
 263
 264 module_init (ttusb2_module_init);
 265 module_exit (ttusb2_module_exit);
 266
 267 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>");
 268 MODULE_DESCRIPTION("Driver for Pinnacle PCTV 400e DVB-S USB2.0");
 269 MODULE_VERSION("1.0");
 270 MODULE_LICENSE("GPL");