drivers/staging/cx25821/cx25821-video-upstream-ch2.c

   1 /*
   2  *  Driver for the Conexant CX25821 PCIe bridge
   3  *
   4  *  Copyright (C) 2009 Conexant Systems Inc.
   5  *  Authors  <hiep.huynh@conexant.com>, <shu.lin@conexant.com>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  24
  25 #include "cx25821-video.h"
  26 #include "cx25821-video-upstream-ch2.h"
  27
  28 #include <linux/fs.h>
  29 #include <linux/errno.h>
  30 #include <linux/kernel.h>
  31 #include <linux/init.h>
  32 #include <linux/module.h>
  33 #include <linux/syscalls.h>
  34 #include <linux/file.h>
  35 #include <linux/fcntl.h>
  36 #include <linux/slab.h>
  37 #include <linux/uaccess.h>
  38
  39 MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards");
  40 MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>");
  41 MODULE_LICENSE("GPL");
  42
  43 static int _intr_msk =
  44         FLD_VID_SRC_RISC1 | FLD_VID_SRC_UF | FLD_VID_SRC_SYNC | FLD_VID_SRC_OPC_ERR;
  45
  46 static __le32 *cx25821_update_riscprogram_ch2(struct cx25821_dev *dev,
  47                                               __le32 *rp, unsigned int offset,
  48                                               unsigned int bpl, u32 sync_line,
  49                                               unsigned int lines,
  50                                               int fifo_enable, int field_type)
  51 {
  52         unsigned int line, i;
  53         int dist_betwn_starts = bpl * 2;
  54
  55         *(rp++) = cpu_to_le32(RISC_RESYNC | sync_line);
  56
  57         if (USE_RISC_NOOP_VIDEO) {
  58                 for (i = 0; i < NUM_NO_OPS; i++)
  59                         *(rp++) = cpu_to_le32(RISC_NOOP);
  60         }
  61
  62         /* scan lines */
  63         for (line = 0; line < lines; line++) {
  64                 *(rp++) = cpu_to_le32(RISC_READ | RISC_SOL | RISC_EOL | bpl);
  65                 *(rp++) = cpu_to_le32(dev->_data_buf_phys_addr_ch2 + offset);
  66                 *(rp++) = cpu_to_le32(0);       /* bits 63-32 */
  67
  68                 if ((lines <= NTSC_FIELD_HEIGHT)
  69                     || (line < (NTSC_FIELD_HEIGHT - 1))
  70                     || !(dev->_isNTSC_ch2)) {
  71                         offset += dist_betwn_starts;
  72                 }
  73         }
  74
  75         return rp;
  76 }
  77
  78 static __le32 *cx25821_risc_field_upstream_ch2(struct cx25821_dev *dev,
  79                                                __le32 *rp,
  80                                                dma_addr_t databuf_phys_addr,
  81                                                unsigned int offset,
  82                                                u32 sync_line, unsigned int bpl,
  83                                                unsigned int lines,
  84                                                int fifo_enable, int field_type)
  85 {
  86         unsigned int line, i;
  87         struct sram_channel *sram_ch =
  88            dev->channels[dev->_channel2_upstream_select].sram_channels;
  89         int dist_betwn_starts = bpl * 2;
  90
  91         /* sync instruction */
  92         if (sync_line != NO_SYNC_LINE)
  93                 *(rp++) = cpu_to_le32(RISC_RESYNC | sync_line);
  94
  95         if (USE_RISC_NOOP_VIDEO) {
  96                 for (i = 0; i < NUM_NO_OPS; i++)
  97                         *(rp++) = cpu_to_le32(RISC_NOOP);
  98         }
  99
 100         /* scan lines */
 101         for (line = 0; line < lines; line++) {
 102                 *(rp++) = cpu_to_le32(RISC_READ | RISC_SOL | RISC_EOL | bpl);
 103                 *(rp++) = cpu_to_le32(databuf_phys_addr + offset);
 104                 *(rp++) = cpu_to_le32(0);       /* bits 63-32 */
 105
 106                 if ((lines <= NTSC_FIELD_HEIGHT)
 107                     || (line < (NTSC_FIELD_HEIGHT - 1))
 108                     || !(dev->_isNTSC_ch2)) {
 109                         offset += dist_betwn_starts;
 110                 }
 111
 112                /*
 113                  check if we need to enable the FIFO after the first 4 lines
 114                   For the upstream video channel, the risc engine will enable
 115                   the FIFO.
 116                */
 117                 if (fifo_enable && line == 3) {
 118                         *(rp++) = RISC_WRITECR;
 119                         *(rp++) = sram_ch->dma_ctl;
 120                         *(rp++) = FLD_VID_FIFO_EN;
 121                         *(rp++) = 0x00000001;
 122                 }
 123         }
 124
 125         return rp;
 126 }
 127
 128 int cx25821_risc_buffer_upstream_ch2(struct cx25821_dev *dev,
 129                                      struct pci_dev *pci,
 130                                      unsigned int top_offset, unsigned int bpl,
 131                                      unsigned int lines)
 132 {
 133         __le32 *rp;
 134         int fifo_enable = 0;
 135         int singlefield_lines = lines >> 1; /*get line count for single field */
 136         int odd_num_lines = singlefield_lines;
 137         int frame = 0;
 138         int frame_size = 0;
 139         int databuf_offset = 0;
 140         int risc_program_size = 0;
 141         int risc_flag = RISC_CNT_RESET;
 142         unsigned int bottom_offset = bpl;
 143         dma_addr_t risc_phys_jump_addr;
 144
 145         if (dev->_isNTSC_ch2) {
 146                 odd_num_lines = singlefield_lines + 1;
 147                 risc_program_size = FRAME1_VID_PROG_SIZE;
 148                 frame_size =
 149                     (bpl ==
 150                      Y411_LINE_SZ) ? FRAME_SIZE_NTSC_Y411 :
 151                     FRAME_SIZE_NTSC_Y422;
 152         } else {
 153                 risc_program_size = PAL_VID_PROG_SIZE;
 154                 frame_size =
 155                     (bpl ==
 156                      Y411_LINE_SZ) ? FRAME_SIZE_PAL_Y411 : FRAME_SIZE_PAL_Y422;
 157         }
 158
 159         /* Virtual address of Risc buffer program */
 160         rp = dev->_dma_virt_addr_ch2;
 161
 162         for (frame = 0; frame < NUM_FRAMES; frame++) {
 163                 databuf_offset = frame_size * frame;
 164
 165                 if (UNSET != top_offset) {
 166                         fifo_enable = (frame == 0) ? FIFO_ENABLE : FIFO_DISABLE;
 167                         rp = cx25821_risc_field_upstream_ch2(dev, rp,
 168                                                              dev->
 169                                                              _data_buf_phys_addr_ch2
 170                                                              + databuf_offset,
 171                                                              top_offset, 0, bpl,
 172                                                              odd_num_lines,
 173                                                              fifo_enable,
 174                                                              ODD_FIELD);
 175                 }
 176
 177                 fifo_enable = FIFO_DISABLE;
 178
 179                /* Even field */
 180                 rp = cx25821_risc_field_upstream_ch2(dev, rp,
 181                                                      dev->
 182                                                      _data_buf_phys_addr_ch2 +
 183                                                      databuf_offset,
 184                                                      bottom_offset, 0x200, bpl,
 185                                                      singlefield_lines,
 186                                                      fifo_enable, EVEN_FIELD);
 187
 188                 if (frame == 0) {
 189                         risc_flag = RISC_CNT_RESET;
 190                         risc_phys_jump_addr =
 191                             dev->_dma_phys_start_addr_ch2 + risc_program_size;
 192                 } else {
 193                         risc_flag = RISC_CNT_INC;
 194                         risc_phys_jump_addr = dev->_dma_phys_start_addr_ch2;
 195                 }
 196
 197                /*
 198                   Loop to 2ndFrameRISC or to Start of
 199                   Risc program & generate IRQ
 200                */
 201                 *(rp++) = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | risc_flag);
 202                 *(rp++) = cpu_to_le32(risc_phys_jump_addr);
 203                 *(rp++) = cpu_to_le32(0);
 204         }
 205
 206         return 0;
 207 }
 208
 209 void cx25821_stop_upstream_video_ch2(struct cx25821_dev *dev)
 210 {
 211         struct sram_channel *sram_ch =
 212            dev->channels[VID_UPSTREAM_SRAM_CHANNEL_J].sram_channels;
 213         u32 tmp = 0;
 214
 215         if (!dev->_is_running_ch2) {
 216                 pr_info("No video file is currently running so return!\n");
 217                 return;
 218         }
 219         /* Disable RISC interrupts */
 220         tmp = cx_read(sram_ch->int_msk);
 221         cx_write(sram_ch->int_msk, tmp & ~_intr_msk);
 222
 223         /* Turn OFF risc and fifo */
 224         tmp = cx_read(sram_ch->dma_ctl);
 225         cx_write(sram_ch->dma_ctl, tmp & ~(FLD_VID_FIFO_EN | FLD_VID_RISC_EN));
 226
 227         /* Clear data buffer memory */
 228         if (dev->_data_buf_virt_addr_ch2)
 229                 memset(dev->_data_buf_virt_addr_ch2, 0,
 230                        dev->_data_buf_size_ch2);
 231
 232         dev->_is_running_ch2 = 0;
 233         dev->_is_first_frame_ch2 = 0;
 234         dev->_frame_count_ch2 = 0;
 235         dev->_file_status_ch2 = END_OF_FILE;
 236
 237         kfree(dev->_irq_queues_ch2);
 238         dev->_irq_queues_ch2 = NULL;
 239
 240         kfree(dev->_filename_ch2);
 241
 242         tmp = cx_read(VID_CH_MODE_SEL);
 243         cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00);
 244 }
 245
 246 void cx25821_free_mem_upstream_ch2(struct cx25821_dev *dev)
 247 {
 248         if (dev->_is_running_ch2)
 249                 cx25821_stop_upstream_video_ch2(dev);
 250
 251         if (dev->_dma_virt_addr_ch2) {
 252                 pci_free_consistent(dev->pci, dev->_risc_size_ch2,
 253                                     dev->_dma_virt_addr_ch2,
 254                                     dev->_dma_phys_addr_ch2);
 255                 dev->_dma_virt_addr_ch2 = NULL;
 256         }
 257
 258         if (dev->_data_buf_virt_addr_ch2) {
 259                 pci_free_consistent(dev->pci, dev->_data_buf_size_ch2,
 260                                     dev->_data_buf_virt_addr_ch2,
 261                                     dev->_data_buf_phys_addr_ch2);
 262                 dev->_data_buf_virt_addr_ch2 = NULL;
 263         }
 264 }
 265
 266 int cx25821_get_frame_ch2(struct cx25821_dev *dev, struct sram_channel *sram_ch)
 267 {
 268         struct file *myfile;
 269         int frame_index_temp = dev->_frame_index_ch2;
 270         int i = 0;
 271         int line_size =
 272             (dev->_pixel_format_ch2 ==
 273              PIXEL_FRMT_411) ? Y411_LINE_SZ : Y422_LINE_SZ;
 274         int frame_size = 0;
 275         int frame_offset = 0;
 276         ssize_t vfs_read_retval = 0;
 277         char mybuf[line_size];
 278         loff_t file_offset;
 279         loff_t pos;
 280         mm_segment_t old_fs;
 281
 282         if (dev->_file_status_ch2 == END_OF_FILE)
 283                 return 0;
 284
 285         if (dev->_isNTSC_ch2) {
 286                 frame_size =
 287                     (line_size ==
 288                      Y411_LINE_SZ) ? FRAME_SIZE_NTSC_Y411 :
 289                     FRAME_SIZE_NTSC_Y422;
 290         } else {
 291                 frame_size =
 292                     (line_size ==
 293                      Y411_LINE_SZ) ? FRAME_SIZE_PAL_Y411 : FRAME_SIZE_PAL_Y422;
 294         }
 295
 296         frame_offset = (frame_index_temp > 0) ? frame_size : 0;
 297         file_offset = dev->_frame_count_ch2 * frame_size;
 298
 299         myfile = filp_open(dev->_filename_ch2, O_RDONLY | O_LARGEFILE, 0);
 300         if (IS_ERR(myfile)) {
 301                 const int open_errno = -PTR_ERR(myfile);
 302                 pr_err("%s(): ERROR opening file(%s) with errno = %d!\n",
 303                        __func__, dev->_filename_ch2, open_errno);
 304                 return PTR_ERR(myfile);
 305         } else {
 306                 if (!(myfile->f_op)) {
 307                         pr_err("%s(): File has no file operations registered!\n",
 308                                __func__);
 309                         filp_close(myfile, NULL);
 310                         return -EIO;
 311                 }
 312
 313                 if (!myfile->f_op->read) {
 314                         pr_err("%s(): File has no READ operations registered!\n",
 315                                __func__);
 316                         filp_close(myfile, NULL);
 317                         return -EIO;
 318                 }
 319
 320                 pos = myfile->f_pos;
 321                 old_fs = get_fs();
 322                 set_fs(KERNEL_DS);
 323
 324                 for (i = 0; i < dev->_lines_count_ch2; i++) {
 325                         pos = file_offset;
 326
 327                         vfs_read_retval =
 328                             vfs_read(myfile, mybuf, line_size, &pos);
 329
 330                         if (vfs_read_retval > 0 && vfs_read_retval == line_size
 331                             && dev->_data_buf_virt_addr_ch2 != NULL) {
 332                                 memcpy((void *)(dev->_data_buf_virt_addr_ch2 +
 333                                                 frame_offset / 4), mybuf,
 334                                        vfs_read_retval);
 335                         }
 336
 337                         file_offset += vfs_read_retval;
 338                         frame_offset += vfs_read_retval;
 339
 340                         if (vfs_read_retval < line_size) {
 341                                 pr_info("Done: exit %s() since no more bytes to read from Video file\n",
 342                                         __func__);
 343                                 break;
 344                         }
 345                 }
 346
 347                 if (i > 0)
 348                         dev->_frame_count_ch2++;
 349
 350                 dev->_file_status_ch2 =
 351                     (vfs_read_retval == line_size) ? IN_PROGRESS : END_OF_FILE;
 352
 353                 set_fs(old_fs);
 354                 filp_close(myfile, NULL);
 355         }
 356
 357         return 0;
 358 }
 359
 360 static void cx25821_vidups_handler_ch2(struct work_struct *work)
 361 {
 362         struct cx25821_dev *dev =
 363             container_of(work, struct cx25821_dev, _irq_work_entry_ch2);
 364
 365         if (!dev) {
 366                 pr_err("ERROR %s(): since container_of(work_struct) FAILED!\n",
 367                        __func__);
 368                 return;
 369         }
 370
 371         cx25821_get_frame_ch2(dev,
 372                              dev->channels[dev->
 373                                _channel2_upstream_select].sram_channels);
 374 }
 375
 376 int cx25821_openfile_ch2(struct cx25821_dev *dev, struct sram_channel *sram_ch)
 377 {
 378         struct file *myfile;
 379         int i = 0, j = 0;
 380         int line_size =
 381             (dev->_pixel_format_ch2 ==
 382              PIXEL_FRMT_411) ? Y411_LINE_SZ : Y422_LINE_SZ;
 383         ssize_t vfs_read_retval = 0;
 384         char mybuf[line_size];
 385         loff_t pos;
 386         loff_t offset = (unsigned long)0;
 387         mm_segment_t old_fs;
 388
 389         myfile = filp_open(dev->_filename_ch2, O_RDONLY | O_LARGEFILE, 0);
 390
 391         if (IS_ERR(myfile)) {
 392                 const int open_errno = -PTR_ERR(myfile);
 393                 pr_err("%s(): ERROR opening file(%s) with errno = %d!\n",
 394                        __func__, dev->_filename_ch2, open_errno);
 395                 return PTR_ERR(myfile);
 396         } else {
 397                 if (!(myfile->f_op)) {
 398                         pr_err("%s(): File has no file operations registered!\n",
 399                                __func__);
 400                         filp_close(myfile, NULL);
 401                         return -EIO;
 402                 }
 403
 404                 if (!myfile->f_op->read) {
 405                         pr_err("%s(): File has no READ operations registered!  Returning\n",
 406                                __func__);
 407                         filp_close(myfile, NULL);
 408                         return -EIO;
 409                 }
 410
 411                 pos = myfile->f_pos;
 412                 old_fs = get_fs();
 413                 set_fs(KERNEL_DS);
 414
 415                 for (j = 0; j < NUM_FRAMES; j++) {
 416                         for (i = 0; i < dev->_lines_count_ch2; i++) {
 417                                 pos = offset;
 418
 419                                 vfs_read_retval =
 420                                     vfs_read(myfile, mybuf, line_size, &pos);
 421
 422                                 if (vfs_read_retval > 0
 423                                     && vfs_read_retval == line_size
 424                                     && dev->_data_buf_virt_addr_ch2 != NULL) {
 425                                         memcpy((void *)(dev->
 426                                                         _data_buf_virt_addr_ch2
 427                                                         + offset / 4), mybuf,
 428                                                vfs_read_retval);
 429                                 }
 430
 431                                 offset += vfs_read_retval;
 432
 433                                 if (vfs_read_retval < line_size) {
 434                                         pr_info("Done: exit %s() since no more bytes to read from Video file\n",
 435                                                 __func__);
 436                                         break;
 437                                 }
 438                         }
 439
 440                         if (i > 0)
 441                                 dev->_frame_count_ch2++;
 442
 443                         if (vfs_read_retval < line_size)
 444                                 break;
 445                 }
 446
 447                 dev->_file_status_ch2 =
 448                     (vfs_read_retval == line_size) ? IN_PROGRESS : END_OF_FILE;
 449
 450                 set_fs(old_fs);
 451                 myfile->f_pos = 0;
 452                 filp_close(myfile, NULL);
 453         }
 454
 455         return 0;
 456 }
 457
 458 static int cx25821_upstream_buffer_prepare_ch2(struct cx25821_dev *dev,
 459                                                struct sram_channel *sram_ch,
 460                                                int bpl)
 461 {
 462         int ret = 0;
 463         dma_addr_t dma_addr;
 464         dma_addr_t data_dma_addr;
 465
 466         if (dev->_dma_virt_addr_ch2 != NULL) {
 467                 pci_free_consistent(dev->pci, dev->upstream_riscbuf_size_ch2,
 468                                     dev->_dma_virt_addr_ch2,
 469                                     dev->_dma_phys_addr_ch2);
 470         }
 471
 472         dev->_dma_virt_addr_ch2 =
 473             pci_alloc_consistent(dev->pci, dev->upstream_riscbuf_size_ch2,
 474                                  &dma_addr);
 475         dev->_dma_virt_start_addr_ch2 = dev->_dma_virt_addr_ch2;
 476         dev->_dma_phys_start_addr_ch2 = dma_addr;
 477         dev->_dma_phys_addr_ch2 = dma_addr;
 478         dev->_risc_size_ch2 = dev->upstream_riscbuf_size_ch2;
 479
 480         if (!dev->_dma_virt_addr_ch2) {
 481                 pr_err("FAILED to allocate memory for Risc buffer! Returning\n");
 482                 return -ENOMEM;
 483         }
 484
 485         /* Iniitize at this address until n bytes to 0 */
 486         memset(dev->_dma_virt_addr_ch2, 0, dev->_risc_size_ch2);
 487
 488         if (dev->_data_buf_virt_addr_ch2 != NULL) {
 489                 pci_free_consistent(dev->pci, dev->upstream_databuf_size_ch2,
 490                                     dev->_data_buf_virt_addr_ch2,
 491                                     dev->_data_buf_phys_addr_ch2);
 492         }
 493         /* For Video Data buffer allocation */
 494         dev->_data_buf_virt_addr_ch2 =
 495             pci_alloc_consistent(dev->pci, dev->upstream_databuf_size_ch2,
 496                                  &data_dma_addr);
 497         dev->_data_buf_phys_addr_ch2 = data_dma_addr;
 498         dev->_data_buf_size_ch2 = dev->upstream_databuf_size_ch2;
 499
 500         if (!dev->_data_buf_virt_addr_ch2) {
 501                 pr_err("FAILED to allocate memory for data buffer! Returning\n");
 502                 return -ENOMEM;
 503         }
 504
 505         /* Initialize at this address until n bytes to 0 */
 506         memset(dev->_data_buf_virt_addr_ch2, 0, dev->_data_buf_size_ch2);
 507
 508         ret = cx25821_openfile_ch2(dev, sram_ch);
 509         if (ret < 0)
 510                 return ret;
 511
 512         /* Creating RISC programs */
 513         ret =
 514             cx25821_risc_buffer_upstream_ch2(dev, dev->pci, 0, bpl,
 515                                              dev->_lines_count_ch2);
 516         if (ret < 0) {
 517                 pr_info("Failed creating Video Upstream Risc programs!\n");
 518                 goto error;
 519         }
 520
 521         return 0;
 522
 523         error:
 524         return ret;
 525 }
 526
 527 int cx25821_video_upstream_irq_ch2(struct cx25821_dev *dev, int chan_num,
 528                                    u32 status)
 529 {
 530         u32 int_msk_tmp;
 531         struct sram_channel *channel = dev->channels[chan_num].sram_channels;
 532         int singlefield_lines = NTSC_FIELD_HEIGHT;
 533         int line_size_in_bytes = Y422_LINE_SZ;
 534         int odd_risc_prog_size = 0;
 535         dma_addr_t risc_phys_jump_addr;
 536         __le32 *rp;
 537
 538         if (status & FLD_VID_SRC_RISC1) {
 539                 /* We should only process one program per call */
 540                 u32 prog_cnt = cx_read(channel->gpcnt);
 541
 542                 /*
 543                  *  Since we've identified our IRQ, clear our bits from the
 544                  *  interrupt mask and interrupt status registers
 545                  */
 546                 int_msk_tmp = cx_read(channel->int_msk);
 547                 cx_write(channel->int_msk, int_msk_tmp & ~_intr_msk);
 548                 cx_write(channel->int_stat, _intr_msk);
 549
 550                 spin_lock(&dev->slock);
 551
 552                 dev->_frame_index_ch2 = prog_cnt;
 553
 554                 queue_work(dev->_irq_queues_ch2, &dev->_irq_work_entry_ch2);
 555
 556                 if (dev->_is_first_frame_ch2) {
 557                         dev->_is_first_frame_ch2 = 0;
 558
 559                         if (dev->_isNTSC_ch2) {
 560                                 singlefield_lines += 1;
 561                                 odd_risc_prog_size = ODD_FLD_NTSC_PROG_SIZE;
 562                         } else {
 563                                 singlefield_lines = PAL_FIELD_HEIGHT;
 564                                 odd_risc_prog_size = ODD_FLD_PAL_PROG_SIZE;
 565                         }
 566
 567                         if (dev->_dma_virt_start_addr_ch2 != NULL) {
 568                                 line_size_in_bytes =
 569                                     (dev->_pixel_format_ch2 ==
 570                                      PIXEL_FRMT_411) ? Y411_LINE_SZ :
 571                                     Y422_LINE_SZ;
 572                                 risc_phys_jump_addr =
 573                                     dev->_dma_phys_start_addr_ch2 +
 574                                     odd_risc_prog_size;
 575
 576                                 rp = cx25821_update_riscprogram_ch2(dev,
 577                                                                     dev->
 578                                                                     _dma_virt_start_addr_ch2,
 579                                                                     TOP_OFFSET,
 580                                                                     line_size_in_bytes,
 581                                                                     0x0,
 582                                                                     singlefield_lines,
 583                                                                     FIFO_DISABLE,
 584                                                                     ODD_FIELD);
 585
 586                                /* Jump to Even Risc program of 1st Frame */
 587                                 *(rp++) = cpu_to_le32(RISC_JUMP);
 588                                 *(rp++) = cpu_to_le32(risc_phys_jump_addr);
 589                                 *(rp++) = cpu_to_le32(0);
 590                         }
 591                 }
 592
 593                 spin_unlock(&dev->slock);
 594         }
 595
 596         if (dev->_file_status_ch2 == END_OF_FILE) {
 597                 pr_info("EOF Channel 2 Framecount = %d\n",
 598                         dev->_frame_count_ch2);
 599                 return -1;
 600         }
 601         /* ElSE, set the interrupt mask register, re-enable irq. */
 602         int_msk_tmp = cx_read(channel->int_msk);
 603         cx_write(channel->int_msk, int_msk_tmp |= _intr_msk);
 604
 605         return 0;
 606 }
 607
 608 static irqreturn_t cx25821_upstream_irq_ch2(int irq, void *dev_id)
 609 {
 610         struct cx25821_dev *dev = dev_id;
 611         u32 msk_stat, vid_status;
 612         int handled = 0;
 613         int channel_num = 0;
 614         struct sram_channel *sram_ch;
 615
 616         if (!dev)
 617                 return -1;
 618
 619         channel_num = VID_UPSTREAM_SRAM_CHANNEL_J;
 620         sram_ch = dev->channels[channel_num].sram_channels;
 621
 622         msk_stat = cx_read(sram_ch->int_mstat);
 623         vid_status = cx_read(sram_ch->int_stat);
 624
 625         /* Only deal with our interrupt */
 626         if (vid_status) {
 627                 handled =
 628                     cx25821_video_upstream_irq_ch2(dev, channel_num,
 629                                                    vid_status);
 630         }
 631
 632         if (handled < 0)
 633                 cx25821_stop_upstream_video_ch2(dev);
 634         else
 635                 handled += handled;
 636
 637         return IRQ_RETVAL(handled);
 638 }
 639
 640 static void cx25821_set_pixelengine_ch2(struct cx25821_dev *dev,
 641                                         struct sram_channel *ch, int pix_format)
 642 {
 643         int width = WIDTH_D1;
 644         int height = dev->_lines_count_ch2;
 645         int num_lines, odd_num_lines;
 646         u32 value;
 647         int vip_mode = PIXEL_ENGINE_VIP1;
 648
 649         value = ((pix_format & 0x3) << 12) | (vip_mode & 0x7);
 650         value &= 0xFFFFFFEF;
 651         value |= dev->_isNTSC_ch2 ? 0 : 0x10;
 652         cx_write(ch->vid_fmt_ctl, value);
 653
 654         /*
 655          *  set number of active pixels in each line. Default is 720
 656          * pixels in both NTSC and PAL format
 657          */
 658         cx_write(ch->vid_active_ctl1, width);
 659
 660         num_lines = (height / 2) & 0x3FF;
 661         odd_num_lines = num_lines;
 662
 663         if (dev->_isNTSC_ch2)
 664                 odd_num_lines += 1;
 665
 666         value = (num_lines << 16) | odd_num_lines;
 667
 668         /* set number of active lines in field 0 (top) and field 1 (bottom) */
 669         cx_write(ch->vid_active_ctl2, value);
 670
 671         cx_write(ch->vid_cdt_size, VID_CDT_SIZE >> 3);
 672 }
 673
 674 int cx25821_start_video_dma_upstream_ch2(struct cx25821_dev *dev,
 675                                          struct sram_channel *sram_ch)
 676 {
 677         u32 tmp = 0;
 678         int err = 0;
 679
 680         /*
 681          *  656/VIP SRC Upstream Channel I & J and 7 - Host Bus Interface
 682          * for channel A-C
 683          */
 684         tmp = cx_read(VID_CH_MODE_SEL);
 685         cx_write(VID_CH_MODE_SEL, tmp | 0x1B0001FF);
 686
 687         /*
 688          *  Set the physical start address of the RISC program in the initial
 689          *  program counter(IPC) member of the cmds.
 690          */
 691         cx_write(sram_ch->cmds_start + 0, dev->_dma_phys_addr_ch2);
 692         cx_write(sram_ch->cmds_start + 4, 0); /* Risc IPC High 64 bits 63-32 */
 693
 694         /* reset counter */
 695         cx_write(sram_ch->gpcnt_ctl, 3);
 696
 697         /* Clear our bits from the interrupt status register. */
 698         cx_write(sram_ch->int_stat, _intr_msk);
 699
 700         /* Set the interrupt mask register, enable irq. */
 701         cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | (1 << sram_ch->irq_bit));
 702         tmp = cx_read(sram_ch->int_msk);
 703         cx_write(sram_ch->int_msk, tmp |= _intr_msk);
 704
 705         err =
 706             request_irq(dev->pci->irq, cx25821_upstream_irq_ch2,
 707                         IRQF_SHARED | IRQF_DISABLED, dev->name, dev);
 708         if (err < 0) {
 709                 pr_err("%s: can't get upstream IRQ %d\n",
 710                        dev->name, dev->pci->irq);
 711                 goto fail_irq;
 712         }
 713         /* Start the DMA  engine */
 714         tmp = cx_read(sram_ch->dma_ctl);
 715         cx_set(sram_ch->dma_ctl, tmp | FLD_VID_RISC_EN);
 716
 717         dev->_is_running_ch2 = 1;
 718         dev->_is_first_frame_ch2 = 1;
 719
 720         return 0;
 721
 722         fail_irq:
 723         cx25821_dev_unregister(dev);
 724         return err;
 725 }
 726
 727 int cx25821_vidupstream_init_ch2(struct cx25821_dev *dev, int channel_select,
 728                                  int pixel_format)
 729 {
 730         struct sram_channel *sram_ch;
 731         u32 tmp;
 732         int retval = 0;
 733         int err = 0;
 734         int data_frame_size = 0;
 735         int risc_buffer_size = 0;
 736         int str_length = 0;
 737
 738         if (dev->_is_running_ch2) {
 739                 pr_info("Video Channel is still running so return!\n");
 740                 return 0;
 741         }
 742
 743         dev->_channel2_upstream_select = channel_select;
 744         sram_ch = dev->channels[channel_select].sram_channels;
 745
 746         INIT_WORK(&dev->_irq_work_entry_ch2, cx25821_vidups_handler_ch2);
 747         dev->_irq_queues_ch2 =
 748             create_singlethread_workqueue("cx25821_workqueue2");
 749
 750         if (!dev->_irq_queues_ch2) {
 751                 pr_err("create_singlethread_workqueue() for Video FAILED!\n");
 752                 return -ENOMEM;
 753         }
 754         /*
 755          * 656/VIP SRC Upstream Channel I & J and 7 -
 756          * Host Bus Interface for channel A-C
 757          */
 758         tmp = cx_read(VID_CH_MODE_SEL);
 759         cx_write(VID_CH_MODE_SEL, tmp | 0x1B0001FF);
 760
 761         dev->_is_running_ch2 = 0;
 762         dev->_frame_count_ch2 = 0;
 763         dev->_file_status_ch2 = RESET_STATUS;
 764         dev->_lines_count_ch2 = dev->_isNTSC_ch2 ? 480 : 576;
 765         dev->_pixel_format_ch2 = pixel_format;
 766         dev->_line_size_ch2 =
 767             (dev->_pixel_format_ch2 ==
 768              PIXEL_FRMT_422) ? (WIDTH_D1 * 2) : (WIDTH_D1 * 3) / 2;
 769         data_frame_size = dev->_isNTSC_ch2 ? NTSC_DATA_BUF_SZ : PAL_DATA_BUF_SZ;
 770         risc_buffer_size =
 771             dev->_isNTSC_ch2 ? NTSC_RISC_BUF_SIZE : PAL_RISC_BUF_SIZE;
 772
 773         if (dev->input_filename_ch2) {
 774                 str_length = strlen(dev->input_filename_ch2);
 775                 dev->_filename_ch2 = kmalloc(str_length + 1, GFP_KERNEL);
 776
 777                 if (!dev->_filename_ch2)
 778                         goto error;
 779
 780                 memcpy(dev->_filename_ch2, dev->input_filename_ch2,
 781                        str_length + 1);
 782         } else {
 783                 str_length = strlen(dev->_defaultname_ch2);
 784                 dev->_filename_ch2 = kmalloc(str_length + 1, GFP_KERNEL);
 785
 786                 if (!dev->_filename_ch2)
 787                         goto error;
 788
 789                 memcpy(dev->_filename_ch2, dev->_defaultname_ch2,
 790                        str_length + 1);
 791         }
 792
 793         /* Default if filename is empty string */
 794         if (strcmp(dev->input_filename_ch2, "") == 0) {
 795                 if (dev->_isNTSC_ch2) {
 796                         dev->_filename_ch2 =
 797                             (dev->_pixel_format_ch2 ==
 798                              PIXEL_FRMT_411) ? "/root/vid411.yuv" :
 799                             "/root/vidtest.yuv";
 800                 } else {
 801                         dev->_filename_ch2 =
 802                             (dev->_pixel_format_ch2 ==
 803                              PIXEL_FRMT_411) ? "/root/pal411.yuv" :
 804                             "/root/pal422.yuv";
 805                 }
 806         }
 807
 808         retval =
 809             cx25821_sram_channel_setup_upstream(dev, sram_ch,
 810                                                 dev->_line_size_ch2, 0);
 811
 812         /* setup fifo + format */
 813         cx25821_set_pixelengine_ch2(dev, sram_ch, dev->_pixel_format_ch2);
 814
 815         dev->upstream_riscbuf_size_ch2 = risc_buffer_size * 2;
 816         dev->upstream_databuf_size_ch2 = data_frame_size * 2;
 817
 818         /* Allocating buffers and prepare RISC program */
 819         retval =
 820             cx25821_upstream_buffer_prepare_ch2(dev, sram_ch,
 821                                                 dev->_line_size_ch2);
 822         if (retval < 0) {
 823                 pr_err("%s: Failed to set up Video upstream buffers!\n",
 824                        dev->name);
 825                 goto error;
 826         }
 827
 828         cx25821_start_video_dma_upstream_ch2(dev, sram_ch);
 829
 830         return 0;
 831
 832         error:
 833         cx25821_dev_unregister(dev);
 834
 835         return err;
 836 }