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

   1 /* DVB USB compliant linux driver for Conexant USB reference design.
   2  *
   3  * The Conexant reference design I saw on their website was only for analogue
   4  * capturing (using the cx25842). The box I took to write this driver (reverse
   5  * engineered) is the one labeled Medion MD95700. In addition to the cx25842
   6  * for analogue capturing it also has a cx22702 DVB-T demodulator on the main
   7  * board. Besides it has a atiremote (X10) and a USB2.0 hub onboard.
   8  *
   9  * Maybe it is a little bit premature to call this driver cxusb, but I assume
  10  * the USB protocol is identical or at least inherited from the reference
  11  * design, so it can be reused for the "analogue-only" device (if it will
  12  * appear at all).
  13  *
  14  * TODO: check if the cx25840-driver (from ivtv) can be used for the analogue
  15  * part
  16  *
  17  * Copyright (C) 2005 Patrick Boettcher (patrick.boettcher@desy.de)
  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 #include "cxusb.h"
  26
  27 #include "cx22702.h"
  28 #include "lgdt330x.h"
  29
  30 /* debug */
  31 int dvb_usb_cxusb_debug;
  32 module_param_named(debug,dvb_usb_cxusb_debug, int, 0644);
  33 MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);
  34
  35 static int cxusb_ctrl_msg(struct dvb_usb_device *d,
  36                 u8 cmd, u8 *wbuf, int wlen, u8 *rbuf, int rlen)
  37 {
  38         int wo = (rbuf == NULL || rlen == 0); /* write-only */
  39         u8 sndbuf[1+wlen];
  40         memset(sndbuf,0,1+wlen);
  41
  42         sndbuf[0] = cmd;
  43         memcpy(&sndbuf[1],wbuf,wlen);
  44         if (wo)
  45                 dvb_usb_generic_write(d,sndbuf,1+wlen);
  46         else
  47                 dvb_usb_generic_rw(d,sndbuf,1+wlen,rbuf,rlen,0);
  48
  49         return 0;
  50 }
  51
  52 /* GPIO */
  53 static void cxusb_gpio_tuner(struct dvb_usb_device *d, int onoff)
  54 {
  55         struct cxusb_state *st = d->priv;
  56         u8 o[2],i;
  57
  58         if (st->gpio_write_state[GPIO_TUNER] == onoff)
  59                 return;
  60
  61         o[0] = GPIO_TUNER;
  62         o[1] = onoff;
  63         cxusb_ctrl_msg(d,CMD_GPIO_WRITE,o,2,&i,1);
  64
  65         if (i != 0x01)
  66                 deb_info("gpio_write failed.\n");
  67
  68         st->gpio_write_state[GPIO_TUNER] = onoff;
  69 }
  70
  71 /* I2C */
  72 static int cxusb_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)
  73 {
  74         struct dvb_usb_device *d = i2c_get_adapdata(adap);
  75         int i;
  76
  77         if (down_interruptible(&d->i2c_sem) < 0)
  78                 return -EAGAIN;
  79
  80         if (num > 2)
  81                 warn("more than 2 i2c messages at a time is not handled yet. TODO.");
  82
  83         for (i = 0; i < num; i++) {
  84
  85                 switch (msg[i].addr) {
  86                         case 0x63:
  87                                 cxusb_gpio_tuner(d,0);
  88                                 break;
  89                         default:
  90                                 cxusb_gpio_tuner(d,1);
  91                                 break;
  92                 }
  93
  94                 /* read request */
  95                 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
  96                         u8 obuf[3+msg[i].len], ibuf[1+msg[i+1].len];
  97                         obuf[0] = msg[i].len;
  98                         obuf[1] = msg[i+1].len;
  99                         obuf[2] = msg[i].addr;
 100                         memcpy(&obuf[3],msg[i].buf,msg[i].len);
 101
 102                         if (cxusb_ctrl_msg(d, CMD_I2C_READ,
 103                                                 obuf, 3+msg[i].len,
 104                                                 ibuf, 1+msg[i+1].len) < 0)
 105                                 break;
 106
 107                         if (ibuf[0] != 0x08)
 108                                 deb_info("i2c read could have been failed\n");
 109
 110                         memcpy(msg[i+1].buf,&ibuf[1],msg[i+1].len);
 111
 112                         i++;
 113                 } else { /* write */
 114                         u8 obuf[2+msg[i].len], ibuf;
 115                         obuf[0] = msg[i].addr;
 116                         obuf[1] = msg[i].len;
 117                         memcpy(&obuf[2],msg[i].buf,msg[i].len);
 118
 119                         if (cxusb_ctrl_msg(d,CMD_I2C_WRITE, obuf, 2+msg[i].len, &ibuf,1) < 0)
 120                                 break;
 121                         if (ibuf != 0x08)
 122                                 deb_info("i2c write could have been failed\n");
 123                 }
 124         }
 125
 126         up(&d->i2c_sem);
 127         return i;
 128 }
 129
 130 static u32 cxusb_i2c_func(struct i2c_adapter *adapter)
 131 {
 132         return I2C_FUNC_I2C;
 133 }
 134
 135 static struct i2c_algorithm cxusb_i2c_algo = {
 136         .master_xfer   = cxusb_i2c_xfer,
 137         .functionality = cxusb_i2c_func,
 138 };
 139
 140 static int cxusb_power_ctrl(struct dvb_usb_device *d, int onoff)
 141 {
 142         u8 b = 0;
 143         if (onoff)
 144                 return cxusb_ctrl_msg(d, CMD_POWER_ON, &b, 1, NULL, 0);
 145         else
 146                 return cxusb_ctrl_msg(d, CMD_POWER_OFF, &b, 1, NULL, 0);
 147 }
 148
 149 static int cxusb_streaming_ctrl(struct dvb_usb_device *d, int onoff)
 150 {
 151         u8 buf[2] = { 0x03, 0x00 };
 152         if (onoff)
 153                 cxusb_ctrl_msg(d,CMD_STREAMING_ON, buf, 2, NULL, 0);
 154         else
 155                 cxusb_ctrl_msg(d,CMD_STREAMING_OFF, NULL, 0, NULL, 0);
 156
 157         return 0;
 158 }
 159
 160 struct cx22702_config cxusb_cx22702_config = {
 161         .demod_address = 0x63,
 162
 163         .output_mode = CX22702_PARALLEL_OUTPUT,
 164
 165         .pll_init = dvb_usb_pll_init_i2c,
 166         .pll_set  = dvb_usb_pll_set_i2c,
 167 };
 168
 169 struct lgdt330x_config cxusb_lgdt330x_config = {
 170         .demod_address = 0x0e,
 171         .demod_chip    = LGDT3303,
 172         .pll_set       = dvb_usb_pll_set_i2c,
 173 };
 174
 175 /* Callbacks for DVB USB */
 176 static int cxusb_fmd1216me_tuner_attach(struct dvb_usb_device *d)
 177 {
 178         u8 bpll[4] = { 0x0b, 0xdc, 0x9c, 0xa0 };
 179         d->pll_addr = 0x61;
 180         memcpy(d->pll_init, bpll, 4);
 181         d->pll_desc = &dvb_pll_fmd1216me;
 182         return 0;
 183 }
 184
 185 static int cxusb_lgh064f_tuner_attach(struct dvb_usb_device *d)
 186 {
 187         u8 bpll[4] = { 0x00, 0x00, 0x18, 0x50 };
 188         /* bpll[2] : unset bit 3, set bits 4&5
 189            bpll[3] : 0x50 - digital, 0x20 - analog */
 190         d->pll_addr = 0x61;
 191         memcpy(d->pll_init, bpll, 4);
 192         d->pll_desc = &dvb_pll_tdvs_tua6034;
 193         return 0;
 194 }
 195
 196 static int cxusb_cx22702_frontend_attach(struct dvb_usb_device *d)
 197 {
 198         u8 b;
 199         if (usb_set_interface(d->udev,0,6) < 0)
 200                 err("set interface failed");
 201
 202         cxusb_ctrl_msg(d,CMD_DIGITAL, NULL, 0, &b, 1);
 203
 204         if ((d->fe = cx22702_attach(&cxusb_cx22702_config, &d->i2c_adap)) != NULL)
 205                 return 0;
 206
 207         return -EIO;
 208 }
 209
 210 static int cxusb_lgdt330x_frontend_attach(struct dvb_usb_device *d)
 211 {
 212         if (usb_set_interface(d->udev,0,0) < 0)
 213                 err("set interface failed");
 214
 215         cxusb_ctrl_msg(d,CMD_DIGITAL, NULL, 0, NULL, 0);
 216
 217         if ((d->fe = lgdt330x_attach(&cxusb_lgdt330x_config, &d->i2c_adap)) != NULL)
 218                 return 0;
 219
 220         return -EIO;
 221 }
 222
 223 /* DVB USB Driver stuff */
 224 static struct dvb_usb_properties cxusb_medion_properties;
 225 static struct dvb_usb_properties cxusb_bluebird_atsc_properties;
 226
 227 static int cxusb_probe(struct usb_interface *intf,
 228                 const struct usb_device_id *id)
 229 {
 230         if (dvb_usb_device_init(intf,&cxusb_medion_properties,THIS_MODULE,NULL) == 0 ||
 231                 dvb_usb_device_init(intf,&cxusb_bluebird_atsc_properties,THIS_MODULE,NULL) == 0) {
 232                 return 0;
 233         }
 234
 235         return -EINVAL;
 236 }
 237
 238 static struct usb_device_id cxusb_table [] = {
 239                 { USB_DEVICE(USB_VID_MEDION, USB_PID_MEDION_MD95700) },
 240                 { USB_DEVICE(USB_VID_DVICO, USB_PID_DVICO_BLUEBIRD_LG064F_COLD) },
 241                 { USB_DEVICE(USB_VID_DVICO, USB_PID_DVICO_BLUEBIRD_LG064F_WARM) },
 242                 {}              /* Terminating entry */
 243 };
 244 MODULE_DEVICE_TABLE (usb, cxusb_table);
 245
 246 static struct dvb_usb_properties cxusb_medion_properties = {
 247         .caps = DVB_USB_IS_AN_I2C_ADAPTER,
 248
 249         .usb_ctrl = CYPRESS_FX2,
 250
 251         .size_of_priv     = sizeof(struct cxusb_state),
 252
 253         .streaming_ctrl   = cxusb_streaming_ctrl,
 254         .power_ctrl       = cxusb_power_ctrl,
 255         .frontend_attach  = cxusb_cx22702_frontend_attach,
 256         .tuner_attach     = cxusb_fmd1216me_tuner_attach,
 257
 258         .i2c_algo         = &cxusb_i2c_algo,
 259
 260         .generic_bulk_ctrl_endpoint = 0x01,
 261         /* parameter for the MPEG2-data transfer */
 262         .urb = {
 263                 .type = DVB_USB_BULK,
 264                 .count = 5,
 265                 .endpoint = 0x02,
 266                 .u = {
 267                         .bulk = {
 268                                 .buffersize = 8192,
 269                         }
 270                 }
 271         },
 272
 273         .num_device_descs = 1,
 274         .devices = {
 275                 {   "Medion MD95700 (MDUSBTV-HYBRID)",
 276                         { NULL },
 277                         { &cxusb_table[0], NULL },
 278                 },
 279         }
 280 };
 281
 282 static struct dvb_usb_properties cxusb_bluebird_atsc_properties = {
 283         .caps = DVB_USB_IS_AN_I2C_ADAPTER,
 284
 285         .usb_ctrl         = CYPRESS_FX2,
 286         .firmware         = "dvb-usb-bluebird-atsc-01.fw",
 287
 288         .size_of_priv     = sizeof(struct cxusb_state),
 289
 290         .streaming_ctrl   = cxusb_streaming_ctrl,
 291         .power_ctrl       = cxusb_power_ctrl,
 292         .frontend_attach  = cxusb_lgdt330x_frontend_attach,
 293         .tuner_attach     = cxusb_lgh064f_tuner_attach,
 294
 295         .i2c_algo         = &cxusb_i2c_algo,
 296
 297         .generic_bulk_ctrl_endpoint = 0x01,
 298         /* parameter for the MPEG2-data transfer */
 299         .urb = {
 300                 .type = DVB_USB_BULK,
 301                 .count = 5,
 302                 .endpoint = 0x02,
 303                 .u = {
 304                         .bulk = {
 305                                 .buffersize = 8192,
 306                         }
 307                 }
 308         },
 309
 310         .num_device_descs = 1,
 311         .devices = {
 312                 {   "DViCO FusionHDTV5 USB Gold",
 313                         { &cxusb_table[1], NULL },
 314                         { &cxusb_table[2], NULL },
 315                 },
 316         }
 317 };
 318
 319 static struct usb_driver cxusb_driver = {
 320         .name           = "dvb_usb_cxusb",
 321         .probe          = cxusb_probe,
 322         .disconnect = dvb_usb_device_exit,
 323         .id_table       = cxusb_table,
 324 };
 325
 326 /* module stuff */
 327 static int __init cxusb_module_init(void)
 328 {
 329         int result;
 330         if ((result = usb_register(&cxusb_driver))) {
 331                 err("usb_register failed. Error number %d",result);
 332                 return result;
 333         }
 334
 335         return 0;
 336 }
 337
 338 static void __exit cxusb_module_exit(void)
 339 {
 340         /* deregister this driver from the USB subsystem */
 341         usb_deregister(&cxusb_driver);
 342 }
 343
 344 module_init (cxusb_module_init);
 345 module_exit (cxusb_module_exit);
 346
 347 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>");
 348 MODULE_DESCRIPTION("Driver for Conexant USB2.0 hybrid reference design");
 349 MODULE_VERSION("1.0-alpha");
 350 MODULE_LICENSE("GPL");