drivers/media/video/au0828/au0828-dvb.c

   1 /*
   2  *  Driver for the Auvitek USB bridge
   3  *
   4  *  Copyright (c) 2008 Steven Toth <stoth@linuxtv.org>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include <linux/module.h>
  23 #include <linux/slab.h>
  24 #include <linux/init.h>
  25 #include <linux/device.h>
  26 #include <linux/suspend.h>
  27 #include <media/v4l2-common.h>
  28
  29 #include "au0828.h"
  30 #include "au8522.h"
  31 #include "xc5000.h"
  32 #include "mxl5007t.h"
  33 #include "tda18271.h"
  34
  35 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  36
  37 #define _AU0828_BULKPIPE 0x83
  38 #define _BULKPIPESIZE 0xe522
  39
  40 static u8 hauppauge_hvr950q_led_states[] = {
  41         0x00, /* off */
  42         0x02, /* yellow */
  43         0x04, /* green */
  44 };
  45
  46 static struct au8522_led_config hauppauge_hvr950q_led_cfg = {
  47         .gpio_output = 0x00e0,
  48         .gpio_output_enable  = 0x6006,
  49         .gpio_output_disable = 0x0660,
  50
  51         .gpio_leds = 0x00e2,
  52         .led_states  = hauppauge_hvr950q_led_states,
  53         .num_led_states = sizeof(hauppauge_hvr950q_led_states),
  54
  55         .vsb8_strong   = 20 /* dB */ * 10,
  56         .qam64_strong  = 25 /* dB */ * 10,
  57         .qam256_strong = 32 /* dB */ * 10,
  58 };
  59
  60 static struct au8522_config hauppauge_hvr950q_config = {
  61         .demod_address = 0x8e >> 1,
  62         .status_mode   = AU8522_DEMODLOCKING,
  63         .qam_if        = AU8522_IF_6MHZ,
  64         .vsb_if        = AU8522_IF_6MHZ,
  65         .led_cfg       = &hauppauge_hvr950q_led_cfg,
  66 };
  67
  68 static struct au8522_config fusionhdtv7usb_config = {
  69         .demod_address = 0x8e >> 1,
  70         .status_mode   = AU8522_DEMODLOCKING,
  71         .qam_if        = AU8522_IF_6MHZ,
  72         .vsb_if        = AU8522_IF_6MHZ,
  73 };
  74
  75 static struct au8522_config hauppauge_woodbury_config = {
  76         .demod_address = 0x8e >> 1,
  77         .status_mode   = AU8522_DEMODLOCKING,
  78         .qam_if        = AU8522_IF_4MHZ,
  79         .vsb_if        = AU8522_IF_3_25MHZ,
  80 };
  81
  82 static struct xc5000_config hauppauge_hvr950q_tunerconfig = {
  83         .i2c_address      = 0x61,
  84         .if_khz           = 6000,
  85 };
  86
  87 static struct mxl5007t_config mxl5007t_hvr950q_config = {
  88         .xtal_freq_hz = MxL_XTAL_24_MHZ,
  89         .if_freq_hz = MxL_IF_6_MHZ,
  90 };
  91
  92 static struct tda18271_config hauppauge_woodbury_tunerconfig = {
  93         .gate    = TDA18271_GATE_DIGITAL,
  94 };
  95
  96 /*-------------------------------------------------------------------*/
  97 static void urb_completion(struct urb *purb)
  98 {
  99         struct au0828_dev *dev = purb->context;
 100         int ptype = usb_pipetype(purb->pipe);
 101
 102         dprintk(2, "%s()\n", __func__);
 103
 104         if (!dev)
 105                 return;
 106
 107         if (dev->urb_streaming == 0)
 108                 return;
 109
 110         if (ptype != PIPE_BULK) {
 111                 printk(KERN_ERR "%s() Unsupported URB type %d\n",
 112                        __func__, ptype);
 113                 return;
 114         }
 115
 116         /* Feed the transport payload into the kernel demux */
 117         dvb_dmx_swfilter_packets(&dev->dvb.demux,
 118                 purb->transfer_buffer, purb->actual_length / 188);
 119
 120         /* Clean the buffer before we requeue */
 121         memset(purb->transfer_buffer, 0, URB_BUFSIZE);
 122
 123         /* Requeue URB */
 124         usb_submit_urb(purb, GFP_ATOMIC);
 125 }
 126
 127 static int stop_urb_transfer(struct au0828_dev *dev)
 128 {
 129         int i;
 130
 131         dprintk(2, "%s()\n", __func__);
 132
 133         for (i = 0; i < URB_COUNT; i++) {
 134                 usb_kill_urb(dev->urbs[i]);
 135                 kfree(dev->urbs[i]->transfer_buffer);
 136                 usb_free_urb(dev->urbs[i]);
 137         }
 138
 139         dev->urb_streaming = 0;
 140
 141         return 0;
 142 }
 143
 144 static int start_urb_transfer(struct au0828_dev *dev)
 145 {
 146         struct urb *purb;
 147         int i, ret = -ENOMEM;
 148
 149         dprintk(2, "%s()\n", __func__);
 150
 151         if (dev->urb_streaming) {
 152                 dprintk(2, "%s: bulk xfer already running!\n", __func__);
 153                 return 0;
 154         }
 155
 156         for (i = 0; i < URB_COUNT; i++) {
 157
 158                 dev->urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
 159                 if (!dev->urbs[i])
 160                         goto err;
 161
 162                 purb = dev->urbs[i];
 163
 164                 purb->transfer_buffer = kzalloc(URB_BUFSIZE, GFP_KERNEL);
 165                 if (!purb->transfer_buffer) {
 166                         usb_free_urb(purb);
 167                         dev->urbs[i] = NULL;
 168                         goto err;
 169                 }
 170
 171                 purb->status = -EINPROGRESS;
 172                 usb_fill_bulk_urb(purb,
 173                                   dev->usbdev,
 174                                   usb_rcvbulkpipe(dev->usbdev,
 175                                         _AU0828_BULKPIPE),
 176                                   purb->transfer_buffer,
 177                                   URB_BUFSIZE,
 178                                   urb_completion,
 179                                   dev);
 180
 181         }
 182
 183         for (i = 0; i < URB_COUNT; i++) {
 184                 ret = usb_submit_urb(dev->urbs[i], GFP_ATOMIC);
 185                 if (ret != 0) {
 186                         stop_urb_transfer(dev);
 187                         printk(KERN_ERR "%s: failed urb submission, "
 188                                "err = %d\n", __func__, ret);
 189                         return ret;
 190                 }
 191         }
 192
 193         dev->urb_streaming = 1;
 194         ret = 0;
 195
 196 err:
 197         return ret;
 198 }
 199
 200 static int au0828_dvb_start_feed(struct dvb_demux_feed *feed)
 201 {
 202         struct dvb_demux *demux = feed->demux;
 203         struct au0828_dev *dev = (struct au0828_dev *) demux->priv;
 204         struct au0828_dvb *dvb = &dev->dvb;
 205         int ret = 0;
 206
 207         dprintk(1, "%s()\n", __func__);
 208
 209         if (!demux->dmx.frontend)
 210                 return -EINVAL;
 211
 212         if (dvb) {
 213                 mutex_lock(&dvb->lock);
 214                 if (dvb->feeding++ == 0) {
 215                         /* Start transport */
 216                         au0828_write(dev, 0x608, 0x90);
 217                         au0828_write(dev, 0x609, 0x72);
 218                         au0828_write(dev, 0x60a, 0x71);
 219                         au0828_write(dev, 0x60b, 0x01);
 220                         ret = start_urb_transfer(dev);
 221                 }
 222                 mutex_unlock(&dvb->lock);
 223         }
 224
 225         return ret;
 226 }
 227
 228 static int au0828_dvb_stop_feed(struct dvb_demux_feed *feed)
 229 {
 230         struct dvb_demux *demux = feed->demux;
 231         struct au0828_dev *dev = (struct au0828_dev *) demux->priv;
 232         struct au0828_dvb *dvb = &dev->dvb;
 233         int ret = 0;
 234
 235         dprintk(1, "%s()\n", __func__);
 236
 237         if (dvb) {
 238                 mutex_lock(&dvb->lock);
 239                 if (--dvb->feeding == 0) {
 240                         /* Stop transport */
 241                         au0828_write(dev, 0x608, 0x00);
 242                         au0828_write(dev, 0x609, 0x00);
 243                         au0828_write(dev, 0x60a, 0x00);
 244                         au0828_write(dev, 0x60b, 0x00);
 245                         ret = stop_urb_transfer(dev);
 246                 }
 247                 mutex_unlock(&dvb->lock);
 248         }
 249
 250         return ret;
 251 }
 252
 253 static int dvb_register(struct au0828_dev *dev)
 254 {
 255         struct au0828_dvb *dvb = &dev->dvb;
 256         int result;
 257
 258         dprintk(1, "%s()\n", __func__);
 259
 260         /* register adapter */
 261         result = dvb_register_adapter(&dvb->adapter, DRIVER_NAME, THIS_MODULE,
 262                                       &dev->usbdev->dev, adapter_nr);
 263         if (result < 0) {
 264                 printk(KERN_ERR "%s: dvb_register_adapter failed "
 265                        "(errno = %d)\n", DRIVER_NAME, result);
 266                 goto fail_adapter;
 267         }
 268         dvb->adapter.priv = dev;
 269
 270         /* register frontend */
 271         result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
 272         if (result < 0) {
 273                 printk(KERN_ERR "%s: dvb_register_frontend failed "
 274                        "(errno = %d)\n", DRIVER_NAME, result);
 275                 goto fail_frontend;
 276         }
 277
 278         /* register demux stuff */
 279         dvb->demux.dmx.capabilities =
 280                 DMX_TS_FILTERING | DMX_SECTION_FILTERING |
 281                 DMX_MEMORY_BASED_FILTERING;
 282         dvb->demux.priv       = dev;
 283         dvb->demux.filternum  = 256;
 284         dvb->demux.feednum    = 256;
 285         dvb->demux.start_feed = au0828_dvb_start_feed;
 286         dvb->demux.stop_feed  = au0828_dvb_stop_feed;
 287         result = dvb_dmx_init(&dvb->demux);
 288         if (result < 0) {
 289                 printk(KERN_ERR "%s: dvb_dmx_init failed (errno = %d)\n",
 290                        DRIVER_NAME, result);
 291                 goto fail_dmx;
 292         }
 293
 294         dvb->dmxdev.filternum    = 256;
 295         dvb->dmxdev.demux        = &dvb->demux.dmx;
 296         dvb->dmxdev.capabilities = 0;
 297         result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
 298         if (result < 0) {
 299                 printk(KERN_ERR "%s: dvb_dmxdev_init failed (errno = %d)\n",
 300                        DRIVER_NAME, result);
 301                 goto fail_dmxdev;
 302         }
 303
 304         dvb->fe_hw.source = DMX_FRONTEND_0;
 305         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 306         if (result < 0) {
 307                 printk(KERN_ERR "%s: add_frontend failed "
 308                        "(DMX_FRONTEND_0, errno = %d)\n", DRIVER_NAME, result);
 309                 goto fail_fe_hw;
 310         }
 311
 312         dvb->fe_mem.source = DMX_MEMORY_FE;
 313         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 314         if (result < 0) {
 315                 printk(KERN_ERR "%s: add_frontend failed "
 316                        "(DMX_MEMORY_FE, errno = %d)\n", DRIVER_NAME, result);
 317                 goto fail_fe_mem;
 318         }
 319
 320         result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 321         if (result < 0) {
 322                 printk(KERN_ERR "%s: connect_frontend failed (errno = %d)\n",
 323                        DRIVER_NAME, result);
 324                 goto fail_fe_conn;
 325         }
 326
 327         /* register network adapter */
 328         dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
 329         return 0;
 330
 331 fail_fe_conn:
 332         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 333 fail_fe_mem:
 334         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 335 fail_fe_hw:
 336         dvb_dmxdev_release(&dvb->dmxdev);
 337 fail_dmxdev:
 338         dvb_dmx_release(&dvb->demux);
 339 fail_dmx:
 340         dvb_unregister_frontend(dvb->frontend);
 341 fail_frontend:
 342         dvb_frontend_detach(dvb->frontend);
 343         dvb_unregister_adapter(&dvb->adapter);
 344 fail_adapter:
 345         return result;
 346 }
 347
 348 void au0828_dvb_unregister(struct au0828_dev *dev)
 349 {
 350         struct au0828_dvb *dvb = &dev->dvb;
 351
 352         dprintk(1, "%s()\n", __func__);
 353
 354         if (dvb->frontend == NULL)
 355                 return;
 356
 357         dvb_net_release(&dvb->net);
 358         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 359         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 360         dvb_dmxdev_release(&dvb->dmxdev);
 361         dvb_dmx_release(&dvb->demux);
 362         dvb_unregister_frontend(dvb->frontend);
 363         dvb_frontend_detach(dvb->frontend);
 364         dvb_unregister_adapter(&dvb->adapter);
 365 }
 366
 367 /* All the DVB attach calls go here, this function get's modified
 368  * for each new card. No other function in this file needs
 369  * to change.
 370  */
 371 int au0828_dvb_register(struct au0828_dev *dev)
 372 {
 373         struct au0828_dvb *dvb = &dev->dvb;
 374         int ret;
 375
 376         dprintk(1, "%s()\n", __func__);
 377
 378         /* init frontend */
 379         switch (dev->boardnr) {
 380         case AU0828_BOARD_HAUPPAUGE_HVR850:
 381         case AU0828_BOARD_HAUPPAUGE_HVR950Q:
 382                 dvb->frontend = dvb_attach(au8522_attach,
 383                                 &hauppauge_hvr950q_config,
 384                                 &dev->i2c_adap);
 385                 if (dvb->frontend != NULL)
 386                         dvb_attach(xc5000_attach, dvb->frontend, &dev->i2c_adap,
 387                                    &hauppauge_hvr950q_tunerconfig);
 388                 break;
 389         case AU0828_BOARD_HAUPPAUGE_HVR950Q_MXL:
 390                 dvb->frontend = dvb_attach(au8522_attach,
 391                                 &hauppauge_hvr950q_config,
 392                                 &dev->i2c_adap);
 393                 if (dvb->frontend != NULL)
 394                         dvb_attach(mxl5007t_attach, dvb->frontend,
 395                                    &dev->i2c_adap, 0x60,
 396                                    &mxl5007t_hvr950q_config);
 397                 break;
 398         case AU0828_BOARD_HAUPPAUGE_WOODBURY:
 399                 dvb->frontend = dvb_attach(au8522_attach,
 400                                 &hauppauge_woodbury_config,
 401                                 &dev->i2c_adap);
 402                 if (dvb->frontend != NULL)
 403                         dvb_attach(tda18271_attach, dvb->frontend,
 404                                    0x60, &dev->i2c_adap,
 405                                    &hauppauge_woodbury_tunerconfig);
 406                 break;
 407         case AU0828_BOARD_DVICO_FUSIONHDTV7:
 408                 dvb->frontend = dvb_attach(au8522_attach,
 409                                 &fusionhdtv7usb_config,
 410                                 &dev->i2c_adap);
 411                 if (dvb->frontend != NULL) {
 412                         dvb_attach(xc5000_attach, dvb->frontend,
 413                                 &dev->i2c_adap,
 414                                 &hauppauge_hvr950q_tunerconfig);
 415                 }
 416                 break;
 417         default:
 418                 printk(KERN_WARNING "The frontend of your DVB/ATSC card "
 419                        "isn't supported yet\n");
 420                 break;
 421         }
 422         if (NULL == dvb->frontend) {
 423                 printk(KERN_ERR "%s() Frontend initialization failed\n",
 424                        __func__);
 425                 return -1;
 426         }
 427         /* define general-purpose callback pointer */
 428         dvb->frontend->callback = au0828_tuner_callback;
 429
 430         /* register everything */
 431         ret = dvb_register(dev);
 432         if (ret < 0) {
 433                 if (dvb->frontend->ops.release)
 434                         dvb->frontend->ops.release(dvb->frontend);
 435                 return ret;
 436         }
 437
 438         return 0;
 439 }