drivers/media/pci/cx23885/altera-ci.c

   1 /*
   2  * altera-ci.c
   3  *
   4  *  CI driver in conjunction with NetUp Dual DVB-T/C RF CI card
   5  *
   6  * Copyright (C) 2010,2011 NetUP Inc.
   7  * Copyright (C) 2010,2011 Igor M. Liplianin <liplianin@netup.ru>
   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  *
  18  * GNU General Public License for more details.
  19  */
  20
  21 /*
  22  * currently cx23885 GPIO's used.
  23  * GPIO-0 ~INT in
  24  * GPIO-1 TMS out
  25  * GPIO-2 ~reset chips out
  26  * GPIO-3 to GPIO-10 data/addr for CA in/out
  27  * GPIO-11 ~CS out
  28  * GPIO-12 AD_RG out
  29  * GPIO-13 ~WR out
  30  * GPIO-14 ~RD out
  31  * GPIO-15 ~RDY in
  32  * GPIO-16 TCK out
  33  * GPIO-17 TDO in
  34  * GPIO-18 TDI out
  35  */
  36 /*
  37  *  Bit definitions for MC417_RWD and MC417_OEN registers
  38  * bits 31-16
  39  * +-----------+
  40  * | Reserved  |
  41  * +-----------+
  42  *   bit 15  bit 14  bit 13 bit 12  bit 11  bit 10  bit 9   bit 8
  43  * +-------+-------+-------+-------+-------+-------+-------+-------+
  44  * |  TDI  |  TDO  |  TCK  |  RDY# |  #RD  |  #WR  | AD_RG |  #CS  |
  45  * +-------+-------+-------+-------+-------+-------+-------+-------+
  46  *  bit 7   bit 6   bit 5   bit 4   bit 3   bit 2   bit 1   bit 0
  47  * +-------+-------+-------+-------+-------+-------+-------+-------+
  48  * |  DATA7|  DATA6|  DATA5|  DATA4|  DATA3|  DATA2|  DATA1|  DATA0|
  49  * +-------+-------+-------+-------+-------+-------+-------+-------+
  50  */
  51
  52 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  53
  54 #include <dvb_demux.h>
  55 #include <dvb_frontend.h>
  56 #include "altera-ci.h"
  57 #include "dvb_ca_en50221.h"
  58
  59 /* FPGA regs */
  60 #define NETUP_CI_INT_CTRL       0x00
  61 #define NETUP_CI_BUSCTRL2       0x01
  62 #define NETUP_CI_ADDR0          0x04
  63 #define NETUP_CI_ADDR1          0x05
  64 #define NETUP_CI_DATA           0x06
  65 #define NETUP_CI_BUSCTRL        0x07
  66 #define NETUP_CI_PID_ADDR0      0x08
  67 #define NETUP_CI_PID_ADDR1      0x09
  68 #define NETUP_CI_PID_DATA       0x0a
  69 #define NETUP_CI_TSA_DIV        0x0c
  70 #define NETUP_CI_TSB_DIV        0x0d
  71 #define NETUP_CI_REVISION       0x0f
  72
  73 /* const for ci op */
  74 #define NETUP_CI_FLG_CTL        1
  75 #define NETUP_CI_FLG_RD         1
  76 #define NETUP_CI_FLG_AD         1
  77
  78 static unsigned int ci_dbg;
  79 module_param(ci_dbg, int, 0644);
  80 MODULE_PARM_DESC(ci_dbg, "Enable CI debugging");
  81
  82 static unsigned int pid_dbg;
  83 module_param(pid_dbg, int, 0644);
  84 MODULE_PARM_DESC(pid_dbg, "Enable PID filtering debugging");
  85
  86 MODULE_DESCRIPTION("altera FPGA CI module");
  87 MODULE_AUTHOR("Igor M. Liplianin  <liplianin@netup.ru>");
  88 MODULE_LICENSE("GPL");
  89
  90 #define ci_dbg_print(fmt, args...) \
  91         do { \
  92                 if (ci_dbg) \
  93                         printk(KERN_DEBUG pr_fmt("%s: " fmt), \
  94                                __func__, ##args); \
  95         } while (0)
  96
  97 #define pid_dbg_print(fmt, args...) \
  98         do { \
  99                 if (pid_dbg) \
 100                         printk(KERN_DEBUG pr_fmt("%s: " fmt), \
 101                                __func__, ##args); \
 102         } while (0)
 103
 104 struct altera_ci_state;
 105 struct netup_hw_pid_filter;
 106
 107 struct fpga_internal {
 108         void *dev;
 109         struct mutex fpga_mutex;/* two CI's on the same fpga */
 110         struct netup_hw_pid_filter *pid_filt[2];
 111         struct altera_ci_state *state[2];
 112         struct work_struct work;
 113         int (*fpga_rw) (void *dev, int flag, int data, int rw);
 114         int cis_used;
 115         int filts_used;
 116         int strt_wrk;
 117 };
 118
 119 /* stores all private variables for communication with CI */
 120 struct altera_ci_state {
 121         struct fpga_internal *internal;
 122         struct dvb_ca_en50221 ca;
 123         int status;
 124         int nr;
 125 };
 126
 127 /* stores all private variables for hardware pid filtering */
 128 struct netup_hw_pid_filter {
 129         struct fpga_internal *internal;
 130         struct dvb_demux *demux;
 131         /* save old functions */
 132         int (*start_feed)(struct dvb_demux_feed *feed);
 133         int (*stop_feed)(struct dvb_demux_feed *feed);
 134
 135         int status;
 136         int nr;
 137 };
 138
 139 /* internal params node */
 140 struct fpga_inode {
 141         /* pointer for internal params, one for each pair of CI's */
 142         struct fpga_internal            *internal;
 143         struct fpga_inode               *next_inode;
 144 };
 145
 146 /* first internal params */
 147 static struct fpga_inode *fpga_first_inode;
 148
 149 /* find chip by dev */
 150 static struct fpga_inode *find_inode(void *dev)
 151 {
 152         struct fpga_inode *temp_chip = fpga_first_inode;
 153
 154         if (temp_chip == NULL)
 155                 return temp_chip;
 156
 157         /*
 158          Search for the last fpga CI chip or
 159          find it by dev */
 160         while ((temp_chip != NULL) &&
 161                                 (temp_chip->internal->dev != dev))
 162                 temp_chip = temp_chip->next_inode;
 163
 164         return temp_chip;
 165 }
 166 /* check demux */
 167 static struct fpga_internal *check_filter(struct fpga_internal *temp_int,
 168                                                 void *demux_dev, int filt_nr)
 169 {
 170         if (temp_int == NULL)
 171                 return NULL;
 172
 173         if ((temp_int->pid_filt[filt_nr]) == NULL)
 174                 return NULL;
 175
 176         if (temp_int->pid_filt[filt_nr]->demux == demux_dev)
 177                 return temp_int;
 178
 179         return NULL;
 180 }
 181
 182 /* find chip by demux */
 183 static struct fpga_inode *find_dinode(void *demux_dev)
 184 {
 185         struct fpga_inode *temp_chip = fpga_first_inode;
 186         struct fpga_internal *temp_int;
 187
 188         /*
 189          * Search of the last fpga CI chip or
 190          * find it by demux
 191          */
 192         while (temp_chip != NULL) {
 193                 if (temp_chip->internal != NULL) {
 194                         temp_int = temp_chip->internal;
 195                         if (check_filter(temp_int, demux_dev, 0))
 196                                 break;
 197                         if (check_filter(temp_int, demux_dev, 1))
 198                                 break;
 199                 }
 200
 201                 temp_chip = temp_chip->next_inode;
 202         }
 203
 204         return temp_chip;
 205 }
 206
 207 /* deallocating chip */
 208 static void remove_inode(struct fpga_internal *internal)
 209 {
 210         struct fpga_inode *prev_node = fpga_first_inode;
 211         struct fpga_inode *del_node = find_inode(internal->dev);
 212
 213         if (del_node != NULL) {
 214                 if (del_node == fpga_first_inode) {
 215                         fpga_first_inode = del_node->next_inode;
 216                 } else {
 217                         while (prev_node->next_inode != del_node)
 218                                 prev_node = prev_node->next_inode;
 219
 220                         if (del_node->next_inode == NULL)
 221                                 prev_node->next_inode = NULL;
 222                         else
 223                                 prev_node->next_inode =
 224                                         prev_node->next_inode->next_inode;
 225                 }
 226
 227                 kfree(del_node);
 228         }
 229 }
 230
 231 /* allocating new chip */
 232 static struct fpga_inode *append_internal(struct fpga_internal *internal)
 233 {
 234         struct fpga_inode *new_node = fpga_first_inode;
 235
 236         if (new_node == NULL) {
 237                 new_node = kmalloc(sizeof(struct fpga_inode), GFP_KERNEL);
 238                 fpga_first_inode = new_node;
 239         } else {
 240                 while (new_node->next_inode != NULL)
 241                         new_node = new_node->next_inode;
 242
 243                 new_node->next_inode =
 244                                 kmalloc(sizeof(struct fpga_inode), GFP_KERNEL);
 245                 if (new_node->next_inode != NULL)
 246                         new_node = new_node->next_inode;
 247                 else
 248                         new_node = NULL;
 249         }
 250
 251         if (new_node != NULL) {
 252                 new_node->internal = internal;
 253                 new_node->next_inode = NULL;
 254         }
 255
 256         return new_node;
 257 }
 258
 259 static int netup_fpga_op_rw(struct fpga_internal *inter, int addr,
 260                                                         u8 val, u8 read)
 261 {
 262         inter->fpga_rw(inter->dev, NETUP_CI_FLG_AD, addr, 0);
 263         return inter->fpga_rw(inter->dev, 0, val, read);
 264 }
 265
 266 /* flag - mem/io, read - read/write */
 267 static int altera_ci_op_cam(struct dvb_ca_en50221 *en50221, int slot,
 268                                 u8 flag, u8 read, int addr, u8 val)
 269 {
 270
 271         struct altera_ci_state *state = en50221->data;
 272         struct fpga_internal *inter = state->internal;
 273
 274         u8 store;
 275         int mem = 0;
 276
 277         if (0 != slot)
 278                 return -EINVAL;
 279
 280         mutex_lock(&inter->fpga_mutex);
 281
 282         netup_fpga_op_rw(inter, NETUP_CI_ADDR0, ((addr << 1) & 0xfe), 0);
 283         netup_fpga_op_rw(inter, NETUP_CI_ADDR1, ((addr >> 7) & 0x7f), 0);
 284         store = netup_fpga_op_rw(inter, NETUP_CI_BUSCTRL, 0, NETUP_CI_FLG_RD);
 285
 286         store &= 0x0f;
 287         store |= ((state->nr << 7) | (flag << 6));
 288
 289         netup_fpga_op_rw(inter, NETUP_CI_BUSCTRL, store, 0);
 290         mem = netup_fpga_op_rw(inter, NETUP_CI_DATA, val, read);
 291
 292         mutex_unlock(&inter->fpga_mutex);
 293
 294         ci_dbg_print("%s: %s: addr=[0x%02x], %s=%x\n", __func__,
 295                         (read) ? "read" : "write", addr,
 296                         (flag == NETUP_CI_FLG_CTL) ? "ctl" : "mem",
 297                         (read) ? mem : val);
 298
 299         return mem;
 300 }
 301
 302 static int altera_ci_read_attribute_mem(struct dvb_ca_en50221 *en50221,
 303                                         int slot, int addr)
 304 {
 305         return altera_ci_op_cam(en50221, slot, 0, NETUP_CI_FLG_RD, addr, 0);
 306 }
 307
 308 static int altera_ci_write_attribute_mem(struct dvb_ca_en50221 *en50221,
 309                                          int slot, int addr, u8 data)
 310 {
 311         return altera_ci_op_cam(en50221, slot, 0, 0, addr, data);
 312 }
 313
 314 static int altera_ci_read_cam_ctl(struct dvb_ca_en50221 *en50221,
 315                                   int slot, u8 addr)
 316 {
 317         return altera_ci_op_cam(en50221, slot, NETUP_CI_FLG_CTL,
 318                                                 NETUP_CI_FLG_RD, addr, 0);
 319 }
 320
 321 static int altera_ci_write_cam_ctl(struct dvb_ca_en50221 *en50221, int slot,
 322                                    u8 addr, u8 data)
 323 {
 324         return altera_ci_op_cam(en50221, slot, NETUP_CI_FLG_CTL, 0, addr, data);
 325 }
 326
 327 static int altera_ci_slot_reset(struct dvb_ca_en50221 *en50221, int slot)
 328 {
 329         struct altera_ci_state *state = en50221->data;
 330         struct fpga_internal *inter = state->internal;
 331         /* reasonable timeout for CI reset is 10 seconds */
 332         unsigned long t_out = jiffies + msecs_to_jiffies(9999);
 333         int ret;
 334
 335         ci_dbg_print("%s\n", __func__);
 336
 337         if (0 != slot)
 338                 return -EINVAL;
 339
 340         mutex_lock(&inter->fpga_mutex);
 341
 342         ret = netup_fpga_op_rw(inter, NETUP_CI_BUSCTRL, 0, NETUP_CI_FLG_RD);
 343         netup_fpga_op_rw(inter, NETUP_CI_BUSCTRL,
 344                                 (ret & 0xcf) | (1 << (5 - state->nr)), 0);
 345
 346         mutex_unlock(&inter->fpga_mutex);
 347
 348         for (;;) {
 349                 mdelay(50);
 350
 351                 mutex_lock(&inter->fpga_mutex);
 352
 353                 ret = netup_fpga_op_rw(inter, NETUP_CI_BUSCTRL,
 354                                                 0, NETUP_CI_FLG_RD);
 355                 mutex_unlock(&inter->fpga_mutex);
 356
 357                 if ((ret & (1 << (5 - state->nr))) == 0)
 358                         break;
 359                 if (time_after(jiffies, t_out))
 360                         break;
 361         }
 362
 363
 364         ci_dbg_print("%s: %d msecs\n", __func__,
 365                 jiffies_to_msecs(jiffies + msecs_to_jiffies(9999) - t_out));
 366
 367         return 0;
 368 }
 369
 370 static int altera_ci_slot_shutdown(struct dvb_ca_en50221 *en50221, int slot)
 371 {
 372         /* not implemented */
 373         return 0;
 374 }
 375
 376 static int altera_ci_slot_ts_ctl(struct dvb_ca_en50221 *en50221, int slot)
 377 {
 378         struct altera_ci_state *state = en50221->data;
 379         struct fpga_internal *inter = state->internal;
 380         int ret;
 381
 382         ci_dbg_print("%s\n", __func__);
 383
 384         if (0 != slot)
 385                 return -EINVAL;
 386
 387         mutex_lock(&inter->fpga_mutex);
 388
 389         ret = netup_fpga_op_rw(inter, NETUP_CI_BUSCTRL, 0, NETUP_CI_FLG_RD);
 390         netup_fpga_op_rw(inter, NETUP_CI_BUSCTRL,
 391                                 (ret & 0x0f) | (1 << (3 - state->nr)), 0);
 392
 393         mutex_unlock(&inter->fpga_mutex);
 394
 395         return 0;
 396 }
 397
 398 /* work handler */
 399 static void netup_read_ci_status(struct work_struct *work)
 400 {
 401         struct fpga_internal *inter =
 402                         container_of(work, struct fpga_internal, work);
 403         int ret;
 404
 405         ci_dbg_print("%s\n", __func__);
 406
 407         mutex_lock(&inter->fpga_mutex);
 408         /* ack' irq */
 409         ret = netup_fpga_op_rw(inter, NETUP_CI_INT_CTRL, 0, NETUP_CI_FLG_RD);
 410         ret = netup_fpga_op_rw(inter, NETUP_CI_BUSCTRL, 0, NETUP_CI_FLG_RD);
 411
 412         mutex_unlock(&inter->fpga_mutex);
 413
 414         if (inter->state[1] != NULL) {
 415                 inter->state[1]->status =
 416                                 ((ret & 1) == 0 ?
 417                                 DVB_CA_EN50221_POLL_CAM_PRESENT |
 418                                 DVB_CA_EN50221_POLL_CAM_READY : 0);
 419                 ci_dbg_print("%s: setting CI[1] status = 0x%x\n",
 420                                 __func__, inter->state[1]->status);
 421         }
 422
 423         if (inter->state[0] != NULL) {
 424                 inter->state[0]->status =
 425                                 ((ret & 2) == 0 ?
 426                                 DVB_CA_EN50221_POLL_CAM_PRESENT |
 427                                 DVB_CA_EN50221_POLL_CAM_READY : 0);
 428                 ci_dbg_print("%s: setting CI[0] status = 0x%x\n",
 429                                 __func__, inter->state[0]->status);
 430         }
 431 }
 432
 433 /* CI irq handler */
 434 int altera_ci_irq(void *dev)
 435 {
 436         struct fpga_inode *temp_int = NULL;
 437         struct fpga_internal *inter = NULL;
 438
 439         ci_dbg_print("%s\n", __func__);
 440
 441         if (dev != NULL) {
 442                 temp_int = find_inode(dev);
 443                 if (temp_int != NULL) {
 444                         inter = temp_int->internal;
 445                         schedule_work(&inter->work);
 446                 }
 447         }
 448
 449         return 1;
 450 }
 451 EXPORT_SYMBOL(altera_ci_irq);
 452
 453 static int altera_poll_ci_slot_status(struct dvb_ca_en50221 *en50221,
 454                                       int slot, int open)
 455 {
 456         struct altera_ci_state *state = en50221->data;
 457
 458         if (0 != slot)
 459                 return -EINVAL;
 460
 461         return state->status;
 462 }
 463
 464 static void altera_hw_filt_release(void *main_dev, int filt_nr)
 465 {
 466         struct fpga_inode *temp_int = find_inode(main_dev);
 467         struct netup_hw_pid_filter *pid_filt = NULL;
 468
 469         ci_dbg_print("%s\n", __func__);
 470
 471         if (temp_int != NULL) {
 472                 pid_filt = temp_int->internal->pid_filt[filt_nr - 1];
 473                 /* stored old feed controls */
 474                 pid_filt->demux->start_feed = pid_filt->start_feed;
 475                 pid_filt->demux->stop_feed = pid_filt->stop_feed;
 476
 477                 if (((--(temp_int->internal->filts_used)) <= 0) &&
 478                          ((temp_int->internal->cis_used) <= 0)) {
 479
 480                         ci_dbg_print("%s: Actually removing\n", __func__);
 481
 482                         remove_inode(temp_int->internal);
 483                         kfree(pid_filt->internal);
 484                 }
 485
 486                 kfree(pid_filt);
 487
 488         }
 489
 490 }
 491
 492 void altera_ci_release(void *dev, int ci_nr)
 493 {
 494         struct fpga_inode *temp_int = find_inode(dev);
 495         struct altera_ci_state *state = NULL;
 496
 497         ci_dbg_print("%s\n", __func__);
 498
 499         if (temp_int != NULL) {
 500                 state = temp_int->internal->state[ci_nr - 1];
 501                 altera_hw_filt_release(dev, ci_nr);
 502
 503
 504                 if (((temp_int->internal->filts_used) <= 0) &&
 505                                 ((--(temp_int->internal->cis_used)) <= 0)) {
 506
 507                         ci_dbg_print("%s: Actually removing\n", __func__);
 508
 509                         remove_inode(temp_int->internal);
 510                         kfree(state->internal);
 511                 }
 512
 513                 if (state != NULL) {
 514                         if (state->ca.data != NULL)
 515                                 dvb_ca_en50221_release(&state->ca);
 516
 517                         kfree(state);
 518                 }
 519         }
 520
 521 }
 522 EXPORT_SYMBOL(altera_ci_release);
 523
 524 static void altera_pid_control(struct netup_hw_pid_filter *pid_filt,
 525                 u16 pid, int onoff)
 526 {
 527         struct fpga_internal *inter = pid_filt->internal;
 528         u8 store = 0;
 529
 530         /* pid 0-0x1f always enabled, don't touch them */
 531         if ((pid == 0x2000) || (pid < 0x20))
 532                 return;
 533
 534         mutex_lock(&inter->fpga_mutex);
 535
 536         netup_fpga_op_rw(inter, NETUP_CI_PID_ADDR0, (pid >> 3) & 0xff, 0);
 537         netup_fpga_op_rw(inter, NETUP_CI_PID_ADDR1,
 538                         ((pid >> 11) & 0x03) | (pid_filt->nr << 2), 0);
 539
 540         store = netup_fpga_op_rw(inter, NETUP_CI_PID_DATA, 0, NETUP_CI_FLG_RD);
 541
 542         if (onoff)/* 0 - on, 1 - off */
 543                 store |= (1 << (pid & 7));
 544         else
 545                 store &= ~(1 << (pid & 7));
 546
 547         netup_fpga_op_rw(inter, NETUP_CI_PID_DATA, store, 0);
 548
 549         mutex_unlock(&inter->fpga_mutex);
 550
 551         pid_dbg_print("%s: (%d) set pid: %5d 0x%04x '%s'\n", __func__,
 552                 pid_filt->nr, pid, pid, onoff ? "off" : "on");
 553 }
 554
 555 static void altera_toggle_fullts_streaming(struct netup_hw_pid_filter *pid_filt,
 556                                         int filt_nr, int onoff)
 557 {
 558         struct fpga_internal *inter = pid_filt->internal;
 559         u8 store = 0;
 560         int i;
 561
 562         pid_dbg_print("%s: pid_filt->nr[%d]  now %s\n", __func__, pid_filt->nr,
 563                         onoff ? "off" : "on");
 564
 565         if (onoff)/* 0 - on, 1 - off */
 566                 store = 0xff;/* ignore pid */
 567         else
 568                 store = 0;/* enable pid */
 569
 570         mutex_lock(&inter->fpga_mutex);
 571
 572         for (i = 0; i < 1024; i++) {
 573                 netup_fpga_op_rw(inter, NETUP_CI_PID_ADDR0, i & 0xff, 0);
 574
 575                 netup_fpga_op_rw(inter, NETUP_CI_PID_ADDR1,
 576                                 ((i >> 8) & 0x03) | (pid_filt->nr << 2), 0);
 577                 /* pid 0-0x1f always enabled */
 578                 netup_fpga_op_rw(inter, NETUP_CI_PID_DATA,
 579                                 (i > 3 ? store : 0), 0);
 580         }
 581
 582         mutex_unlock(&inter->fpga_mutex);
 583 }
 584
 585 static int altera_pid_feed_control(void *demux_dev, int filt_nr,
 586                 struct dvb_demux_feed *feed, int onoff)
 587 {
 588         struct fpga_inode *temp_int = find_dinode(demux_dev);
 589         struct fpga_internal *inter = temp_int->internal;
 590         struct netup_hw_pid_filter *pid_filt = inter->pid_filt[filt_nr - 1];
 591
 592         altera_pid_control(pid_filt, feed->pid, onoff ? 0 : 1);
 593         /* call old feed proc's */
 594         if (onoff)
 595                 pid_filt->start_feed(feed);
 596         else
 597                 pid_filt->stop_feed(feed);
 598
 599         if (feed->pid == 0x2000)
 600                 altera_toggle_fullts_streaming(pid_filt, filt_nr,
 601                                                 onoff ? 0 : 1);
 602
 603         return 0;
 604 }
 605
 606 static int altera_ci_start_feed(struct dvb_demux_feed *feed, int num)
 607 {
 608         altera_pid_feed_control(feed->demux, num, feed, 1);
 609
 610         return 0;
 611 }
 612
 613 static int altera_ci_stop_feed(struct dvb_demux_feed *feed, int num)
 614 {
 615         altera_pid_feed_control(feed->demux, num, feed, 0);
 616
 617         return 0;
 618 }
 619
 620 static int altera_ci_start_feed_1(struct dvb_demux_feed *feed)
 621 {
 622         return altera_ci_start_feed(feed, 1);
 623 }
 624
 625 static int altera_ci_stop_feed_1(struct dvb_demux_feed *feed)
 626 {
 627         return altera_ci_stop_feed(feed, 1);
 628 }
 629
 630 static int altera_ci_start_feed_2(struct dvb_demux_feed *feed)
 631 {
 632         return altera_ci_start_feed(feed, 2);
 633 }
 634
 635 static int altera_ci_stop_feed_2(struct dvb_demux_feed *feed)
 636 {
 637         return altera_ci_stop_feed(feed, 2);
 638 }
 639
 640 static int altera_hw_filt_init(struct altera_ci_config *config, int hw_filt_nr)
 641 {
 642         struct netup_hw_pid_filter *pid_filt = NULL;
 643         struct fpga_inode *temp_int = find_inode(config->dev);
 644         struct fpga_internal *inter = NULL;
 645         int ret = 0;
 646
 647         pid_filt = kzalloc(sizeof(struct netup_hw_pid_filter), GFP_KERNEL);
 648
 649         ci_dbg_print("%s\n", __func__);
 650
 651         if (!pid_filt) {
 652                 ret = -ENOMEM;
 653                 goto err;
 654         }
 655
 656         if (temp_int != NULL) {
 657                 inter = temp_int->internal;
 658                 (inter->filts_used)++;
 659                 ci_dbg_print("%s: Find Internal Structure!\n", __func__);
 660         } else {
 661                 inter = kzalloc(sizeof(struct fpga_internal), GFP_KERNEL);
 662                 if (!inter) {
 663                         ret = -ENOMEM;
 664                         goto err;
 665                 }
 666
 667                 temp_int = append_internal(inter);
 668                 inter->filts_used = 1;
 669                 inter->dev = config->dev;
 670                 inter->fpga_rw = config->fpga_rw;
 671                 mutex_init(&inter->fpga_mutex);
 672                 inter->strt_wrk = 1;
 673                 ci_dbg_print("%s: Create New Internal Structure!\n", __func__);
 674         }
 675
 676         ci_dbg_print("%s: setting hw pid filter = %p for ci = %d\n", __func__,
 677                                                 pid_filt, hw_filt_nr - 1);
 678         inter->pid_filt[hw_filt_nr - 1] = pid_filt;
 679         pid_filt->demux = config->demux;
 680         pid_filt->internal = inter;
 681         pid_filt->nr = hw_filt_nr - 1;
 682         /* store old feed controls */
 683         pid_filt->start_feed = config->demux->start_feed;
 684         pid_filt->stop_feed = config->demux->stop_feed;
 685         /* replace with new feed controls */
 686         if (hw_filt_nr == 1) {
 687                 pid_filt->demux->start_feed = altera_ci_start_feed_1;
 688                 pid_filt->demux->stop_feed = altera_ci_stop_feed_1;
 689         } else if (hw_filt_nr == 2) {
 690                 pid_filt->demux->start_feed = altera_ci_start_feed_2;
 691                 pid_filt->demux->stop_feed = altera_ci_stop_feed_2;
 692         }
 693
 694         altera_toggle_fullts_streaming(pid_filt, 0, 1);
 695
 696         return 0;
 697 err:
 698         ci_dbg_print("%s: Can't init hardware filter: Error %d\n",
 699                      __func__, ret);
 700
 701         kfree(pid_filt);
 702
 703         return ret;
 704 }
 705
 706 int altera_ci_init(struct altera_ci_config *config, int ci_nr)
 707 {
 708         struct altera_ci_state *state;
 709         struct fpga_inode *temp_int = find_inode(config->dev);
 710         struct fpga_internal *inter = NULL;
 711         int ret = 0;
 712         u8 store = 0;
 713
 714         state = kzalloc(sizeof(struct altera_ci_state), GFP_KERNEL);
 715
 716         ci_dbg_print("%s\n", __func__);
 717
 718         if (!state) {
 719                 ret = -ENOMEM;
 720                 goto err;
 721         }
 722
 723         if (temp_int != NULL) {
 724                 inter = temp_int->internal;
 725                 (inter->cis_used)++;
 726                 inter->fpga_rw = config->fpga_rw;
 727                 ci_dbg_print("%s: Find Internal Structure!\n", __func__);
 728         } else {
 729                 inter = kzalloc(sizeof(struct fpga_internal), GFP_KERNEL);
 730                 if (!inter) {
 731                         ret = -ENOMEM;
 732                         goto err;
 733                 }
 734
 735                 temp_int = append_internal(inter);
 736                 inter->cis_used = 1;
 737                 inter->dev = config->dev;
 738                 inter->fpga_rw = config->fpga_rw;
 739                 mutex_init(&inter->fpga_mutex);
 740                 inter->strt_wrk = 1;
 741                 ci_dbg_print("%s: Create New Internal Structure!\n", __func__);
 742         }
 743
 744         ci_dbg_print("%s: setting state = %p for ci = %d\n", __func__,
 745                                                 state, ci_nr - 1);
 746         state->internal = inter;
 747         state->nr = ci_nr - 1;
 748
 749         state->ca.owner = THIS_MODULE;
 750         state->ca.read_attribute_mem = altera_ci_read_attribute_mem;
 751         state->ca.write_attribute_mem = altera_ci_write_attribute_mem;
 752         state->ca.read_cam_control = altera_ci_read_cam_ctl;
 753         state->ca.write_cam_control = altera_ci_write_cam_ctl;
 754         state->ca.slot_reset = altera_ci_slot_reset;
 755         state->ca.slot_shutdown = altera_ci_slot_shutdown;
 756         state->ca.slot_ts_enable = altera_ci_slot_ts_ctl;
 757         state->ca.poll_slot_status = altera_poll_ci_slot_status;
 758         state->ca.data = state;
 759
 760         ret = dvb_ca_en50221_init(config->adapter,
 761                                    &state->ca,
 762                                    /* flags */ 0,
 763                                    /* n_slots */ 1);
 764         if (0 != ret)
 765                 goto err;
 766
 767         inter->state[ci_nr - 1] = state;
 768
 769         altera_hw_filt_init(config, ci_nr);
 770
 771         if (inter->strt_wrk) {
 772                 INIT_WORK(&inter->work, netup_read_ci_status);
 773                 inter->strt_wrk = 0;
 774         }
 775
 776         ci_dbg_print("%s: CI initialized!\n", __func__);
 777
 778         mutex_lock(&inter->fpga_mutex);
 779
 780         /* Enable div */
 781         netup_fpga_op_rw(inter, NETUP_CI_TSA_DIV, 0x0, 0);
 782         netup_fpga_op_rw(inter, NETUP_CI_TSB_DIV, 0x0, 0);
 783
 784         /* enable TS out */
 785         store = netup_fpga_op_rw(inter, NETUP_CI_BUSCTRL2, 0, NETUP_CI_FLG_RD);
 786         store |= (3 << 4);
 787         netup_fpga_op_rw(inter, NETUP_CI_BUSCTRL2, store, 0);
 788
 789         ret = netup_fpga_op_rw(inter, NETUP_CI_REVISION, 0, NETUP_CI_FLG_RD);
 790         /* enable irq */
 791         netup_fpga_op_rw(inter, NETUP_CI_INT_CTRL, 0x44, 0);
 792
 793         mutex_unlock(&inter->fpga_mutex);
 794
 795         ci_dbg_print("%s: NetUP CI Revision = 0x%x\n", __func__, ret);
 796
 797         schedule_work(&inter->work);
 798
 799         return 0;
 800 err:
 801         ci_dbg_print("%s: Cannot initialize CI: Error %d.\n", __func__, ret);
 802
 803         kfree(state);
 804
 805         return ret;
 806 }
 807 EXPORT_SYMBOL(altera_ci_init);
 808
 809 int altera_ci_tuner_reset(void *dev, int ci_nr)
 810 {
 811         struct fpga_inode *temp_int = find_inode(dev);
 812         struct fpga_internal *inter = NULL;
 813         u8 store;
 814
 815         ci_dbg_print("%s\n", __func__);
 816
 817         if (temp_int == NULL)
 818                 return -1;
 819
 820         if (temp_int->internal == NULL)
 821                 return -1;
 822
 823         inter = temp_int->internal;
 824
 825         mutex_lock(&inter->fpga_mutex);
 826
 827         store = netup_fpga_op_rw(inter, NETUP_CI_BUSCTRL2, 0, NETUP_CI_FLG_RD);
 828         store &= ~(4 << (2 - ci_nr));
 829         netup_fpga_op_rw(inter, NETUP_CI_BUSCTRL2, store, 0);
 830         msleep(100);
 831         store |= (4 << (2 - ci_nr));
 832         netup_fpga_op_rw(inter, NETUP_CI_BUSCTRL2, store, 0);
 833
 834         mutex_unlock(&inter->fpga_mutex);
 835
 836         return 0;
 837 }
 838 EXPORT_SYMBOL(altera_ci_tuner_reset);