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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-btrfs-devel.git] / drivers / staging / cx25821 / cx25821-video-upstream-ch2.c
blob2a724ddfa53f1cfa226f8569a7d98dd68647391c
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 = FLD_VID_SRC_RISC1 | FLD_VID_SRC_UF | FLD_VID_SRC_SYNC |
44 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 if (bpl == Y411_LINE_SZ)
149 frame_size = FRAME_SIZE_NTSC_Y411;
150 else
151 frame_size = FRAME_SIZE_NTSC_Y422;
152 } else {
153 risc_program_size = PAL_VID_PROG_SIZE;
154 if (bpl == Y411_LINE_SZ)
155 frame_size = FRAME_SIZE_PAL_Y411;
156 else
157 frame_size = FRAME_SIZE_PAL_Y422;
158 }
159
160 /* Virtual address of Risc buffer program */
161 rp = dev->_dma_virt_addr_ch2;
162
163 for (frame = 0; frame < NUM_FRAMES; frame++) {
164 databuf_offset = frame_size * frame;
165
166 if (UNSET != top_offset) {
167 fifo_enable = (frame == 0) ? FIFO_ENABLE : FIFO_DISABLE;
168 rp = cx25821_risc_field_upstream_ch2(dev, rp,
169 dev->_data_buf_phys_addr_ch2 + databuf_offset,
170 top_offset, 0, bpl, odd_num_lines, fifo_enable,
171 ODD_FIELD);
172 }
173
174 fifo_enable = FIFO_DISABLE;
175
176 /* Even field */
177 rp = cx25821_risc_field_upstream_ch2(dev, rp,
178 dev->_data_buf_phys_addr_ch2 + databuf_offset,
179 bottom_offset, 0x200, bpl, singlefield_lines,
180 fifo_enable, EVEN_FIELD);
181
182 if (frame == 0) {
183 risc_flag = RISC_CNT_RESET;
184 risc_phys_jump_addr = dev->_dma_phys_start_addr_ch2 +
185 risc_program_size;
186 } else {
187 risc_flag = RISC_CNT_INC;
188 risc_phys_jump_addr = dev->_dma_phys_start_addr_ch2;
189 }
190
191 /*
192 Loop to 2ndFrameRISC or to Start of
193 Risc program & generate IRQ
194 */
195 *(rp++) = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | risc_flag);
196 *(rp++) = cpu_to_le32(risc_phys_jump_addr);
197 *(rp++) = cpu_to_le32(0);
198 }
199
200 return 0;
201 }
202
203 void cx25821_stop_upstream_video_ch2(struct cx25821_dev *dev)
204 {
205 struct sram_channel *sram_ch =
206 dev->channels[VID_UPSTREAM_SRAM_CHANNEL_J].sram_channels;
207 u32 tmp = 0;
208
209 if (!dev->_is_running_ch2) {
210 pr_info("No video file is currently running so return!\n");
211 return;
212 }
213 /* Disable RISC interrupts */
214 tmp = cx_read(sram_ch->int_msk);
215 cx_write(sram_ch->int_msk, tmp & ~_intr_msk);
216
217 /* Turn OFF risc and fifo */
218 tmp = cx_read(sram_ch->dma_ctl);
219 cx_write(sram_ch->dma_ctl, tmp & ~(FLD_VID_FIFO_EN | FLD_VID_RISC_EN));
220
221 /* Clear data buffer memory */
222 if (dev->_data_buf_virt_addr_ch2)
223 memset(dev->_data_buf_virt_addr_ch2, 0,
224 dev->_data_buf_size_ch2);
225
226 dev->_is_running_ch2 = 0;
227 dev->_is_first_frame_ch2 = 0;
228 dev->_frame_count_ch2 = 0;
229 dev->_file_status_ch2 = END_OF_FILE;
230
231 kfree(dev->_irq_queues_ch2);
232 dev->_irq_queues_ch2 = NULL;
233
234 kfree(dev->_filename_ch2);
235
236 tmp = cx_read(VID_CH_MODE_SEL);
237 cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00);
238 }
239
240 void cx25821_free_mem_upstream_ch2(struct cx25821_dev *dev)
241 {
242 if (dev->_is_running_ch2)
243 cx25821_stop_upstream_video_ch2(dev);
244
245 if (dev->_dma_virt_addr_ch2) {
246 pci_free_consistent(dev->pci, dev->_risc_size_ch2,
247 dev->_dma_virt_addr_ch2,
248 dev->_dma_phys_addr_ch2);
249 dev->_dma_virt_addr_ch2 = NULL;
250 }
251
252 if (dev->_data_buf_virt_addr_ch2) {
253 pci_free_consistent(dev->pci, dev->_data_buf_size_ch2,
254 dev->_data_buf_virt_addr_ch2,
255 dev->_data_buf_phys_addr_ch2);
256 dev->_data_buf_virt_addr_ch2 = NULL;
257 }
258 }
259
260 int cx25821_get_frame_ch2(struct cx25821_dev *dev, struct sram_channel *sram_ch)
261 {
262 struct file *myfile;
263 int frame_index_temp = dev->_frame_index_ch2;
264 int i = 0;
265 int line_size =
266 (dev->_pixel_format_ch2 ==
267 PIXEL_FRMT_411) ? Y411_LINE_SZ : Y422_LINE_SZ;
268 int frame_size = 0;
269 int frame_offset = 0;
270 ssize_t vfs_read_retval = 0;
271 char mybuf[line_size];
272 loff_t file_offset;
273 loff_t pos;
274 mm_segment_t old_fs;
275
276 if (dev->_file_status_ch2 == END_OF_FILE)
277 return 0;
278
279 if (dev->_isNTSC_ch2) {
280 frame_size =
281 (line_size ==
282 Y411_LINE_SZ) ? FRAME_SIZE_NTSC_Y411 :
283 FRAME_SIZE_NTSC_Y422;
284 } else {
285 frame_size =
286 (line_size ==
287 Y411_LINE_SZ) ? FRAME_SIZE_PAL_Y411 : FRAME_SIZE_PAL_Y422;
288 }
289
290 frame_offset = (frame_index_temp > 0) ? frame_size : 0;
291 file_offset = dev->_frame_count_ch2 * frame_size;
292
293 myfile = filp_open(dev->_filename_ch2, O_RDONLY | O_LARGEFILE, 0);
294 if (IS_ERR(myfile)) {
295 const int open_errno = -PTR_ERR(myfile);
296 pr_err("%s(): ERROR opening file(%s) with errno = %d!\n",
297 __func__, dev->_filename_ch2, open_errno);
298 return PTR_ERR(myfile);
299 } else {
300 if (!(myfile->f_op)) {
301 pr_err("%s(): File has no file operations registered!\n",
302 __func__);
303 filp_close(myfile, NULL);
304 return -EIO;
305 }
306
307 if (!myfile->f_op->read) {
308 pr_err("%s(): File has no READ operations registered!\n",
309 __func__);
310 filp_close(myfile, NULL);
311 return -EIO;
312 }
313
314 pos = myfile->f_pos;
315 old_fs = get_fs();
316 set_fs(KERNEL_DS);
317
318 for (i = 0; i < dev->_lines_count_ch2; i++) {
319 pos = file_offset;
320
321 vfs_read_retval =
322 vfs_read(myfile, mybuf, line_size, &pos);
323
324 if (vfs_read_retval > 0 && vfs_read_retval == line_size
325 && dev->_data_buf_virt_addr_ch2 != NULL) {
326 memcpy((void *)(dev->_data_buf_virt_addr_ch2 +
327 frame_offset / 4), mybuf,
328 vfs_read_retval);
329 }
330
331 file_offset += vfs_read_retval;
332 frame_offset += vfs_read_retval;
333
334 if (vfs_read_retval < line_size) {
335 pr_info("Done: exit %s() since no more bytes to read from Video file\n",
336 __func__);
337 break;
338 }
339 }
340
341 if (i > 0)
342 dev->_frame_count_ch2++;
343
344 dev->_file_status_ch2 =
345 (vfs_read_retval == line_size) ? IN_PROGRESS : END_OF_FILE;
346
347 set_fs(old_fs);
348 filp_close(myfile, NULL);
349 }
350
351 return 0;
352 }
353
354 static void cx25821_vidups_handler_ch2(struct work_struct *work)
355 {
356 struct cx25821_dev *dev =
357 container_of(work, struct cx25821_dev, _irq_work_entry_ch2);
358
359 if (!dev) {
360 pr_err("ERROR %s(): since container_of(work_struct) FAILED!\n",
361 __func__);
362 return;
363 }
364
365 cx25821_get_frame_ch2(dev,
366 dev->channels[dev->
367 _channel2_upstream_select].sram_channels);
368 }
369
370 int cx25821_openfile_ch2(struct cx25821_dev *dev, struct sram_channel *sram_ch)
371 {
372 struct file *myfile;
373 int i = 0, j = 0;
374 int line_size =
375 (dev->_pixel_format_ch2 ==
376 PIXEL_FRMT_411) ? Y411_LINE_SZ : Y422_LINE_SZ;
377 ssize_t vfs_read_retval = 0;
378 char mybuf[line_size];
379 loff_t pos;
380 loff_t offset = (unsigned long)0;
381 mm_segment_t old_fs;
382
383 myfile = filp_open(dev->_filename_ch2, O_RDONLY | O_LARGEFILE, 0);
384
385 if (IS_ERR(myfile)) {
386 const int open_errno = -PTR_ERR(myfile);
387 pr_err("%s(): ERROR opening file(%s) with errno = %d!\n",
388 __func__, dev->_filename_ch2, open_errno);
389 return PTR_ERR(myfile);
390 } else {
391 if (!(myfile->f_op)) {
392 pr_err("%s(): File has no file operations registered!\n",
393 __func__);
394 filp_close(myfile, NULL);
395 return -EIO;
396 }
397
398 if (!myfile->f_op->read) {
399 pr_err("%s(): File has no READ operations registered! Returning\n",
400 __func__);
401 filp_close(myfile, NULL);
402 return -EIO;
403 }
404
405 pos = myfile->f_pos;
406 old_fs = get_fs();
407 set_fs(KERNEL_DS);
408
409 for (j = 0; j < NUM_FRAMES; j++) {
410 for (i = 0; i < dev->_lines_count_ch2; i++) {
411 pos = offset;
412
413 vfs_read_retval =
414 vfs_read(myfile, mybuf, line_size, &pos);
415
416 if (vfs_read_retval > 0
417 && vfs_read_retval == line_size
418 && dev->_data_buf_virt_addr_ch2 != NULL) {
419 memcpy((void *)(dev->
420 _data_buf_virt_addr_ch2
421 + offset / 4), mybuf,
422 vfs_read_retval);
423 }
424
425 offset += vfs_read_retval;
426
427 if (vfs_read_retval < line_size) {
428 pr_info("Done: exit %s() since no more bytes to read from Video file\n",
429 __func__);
430 break;
431 }
432 }
433
434 if (i > 0)
435 dev->_frame_count_ch2++;
436
437 if (vfs_read_retval < line_size)
438 break;
439 }
440
441 dev->_file_status_ch2 =
442 (vfs_read_retval == line_size) ? IN_PROGRESS : END_OF_FILE;
443
444 set_fs(old_fs);
445 myfile->f_pos = 0;
446 filp_close(myfile, NULL);
447 }
448
449 return 0;
450 }
451
452 static int cx25821_upstream_buffer_prepare_ch2(struct cx25821_dev *dev,
453 struct sram_channel *sram_ch,
454 int bpl)
455 {
456 int ret = 0;
457 dma_addr_t dma_addr;
458 dma_addr_t data_dma_addr;
459
460 if (dev->_dma_virt_addr_ch2 != NULL) {
461 pci_free_consistent(dev->pci, dev->upstream_riscbuf_size_ch2,
462 dev->_dma_virt_addr_ch2,
463 dev->_dma_phys_addr_ch2);
464 }
465
466 dev->_dma_virt_addr_ch2 =
467 pci_alloc_consistent(dev->pci, dev->upstream_riscbuf_size_ch2,
468 &dma_addr);
469 dev->_dma_virt_start_addr_ch2 = dev->_dma_virt_addr_ch2;
470 dev->_dma_phys_start_addr_ch2 = dma_addr;
471 dev->_dma_phys_addr_ch2 = dma_addr;
472 dev->_risc_size_ch2 = dev->upstream_riscbuf_size_ch2;
473
474 if (!dev->_dma_virt_addr_ch2) {
475 pr_err("FAILED to allocate memory for Risc buffer! Returning\n");
476 return -ENOMEM;
477 }
478
479 /* Iniitize at this address until n bytes to 0 */
480 memset(dev->_dma_virt_addr_ch2, 0, dev->_risc_size_ch2);
481
482 if (dev->_data_buf_virt_addr_ch2 != NULL) {
483 pci_free_consistent(dev->pci, dev->upstream_databuf_size_ch2,
484 dev->_data_buf_virt_addr_ch2,
485 dev->_data_buf_phys_addr_ch2);
486 }
487 /* For Video Data buffer allocation */
488 dev->_data_buf_virt_addr_ch2 =
489 pci_alloc_consistent(dev->pci, dev->upstream_databuf_size_ch2,
490 &data_dma_addr);
491 dev->_data_buf_phys_addr_ch2 = data_dma_addr;
492 dev->_data_buf_size_ch2 = dev->upstream_databuf_size_ch2;
493
494 if (!dev->_data_buf_virt_addr_ch2) {
495 pr_err("FAILED to allocate memory for data buffer! Returning\n");
496 return -ENOMEM;
497 }
498
499 /* Initialize at this address until n bytes to 0 */
500 memset(dev->_data_buf_virt_addr_ch2, 0, dev->_data_buf_size_ch2);
501
502 ret = cx25821_openfile_ch2(dev, sram_ch);
503 if (ret < 0)
504 return ret;
505
506 /* Creating RISC programs */
507 ret = cx25821_risc_buffer_upstream_ch2(dev, dev->pci, 0, bpl,
508 dev->_lines_count_ch2);
509 if (ret < 0) {
510 pr_info("Failed creating Video Upstream Risc programs!\n");
511 goto error;
512 }
513
514 return 0;
515
516 error:
517 return ret;
518 }
519
520 int cx25821_video_upstream_irq_ch2(struct cx25821_dev *dev, int chan_num,
521 u32 status)
522 {
523 u32 int_msk_tmp;
524 struct sram_channel *channel = dev->channels[chan_num].sram_channels;
525 int singlefield_lines = NTSC_FIELD_HEIGHT;
526 int line_size_in_bytes = Y422_LINE_SZ;
527 int odd_risc_prog_size = 0;
528 dma_addr_t risc_phys_jump_addr;
529 __le32 *rp;
530
531 if (status & FLD_VID_SRC_RISC1) {
532 /* We should only process one program per call */
533 u32 prog_cnt = cx_read(channel->gpcnt);
534
535 /*
536 * Since we've identified our IRQ, clear our bits from the
537 * interrupt mask and interrupt status registers
538 */
539 int_msk_tmp = cx_read(channel->int_msk);
540 cx_write(channel->int_msk, int_msk_tmp & ~_intr_msk);
541 cx_write(channel->int_stat, _intr_msk);
542
543 spin_lock(&dev->slock);
544
545 dev->_frame_index_ch2 = prog_cnt;
546
547 queue_work(dev->_irq_queues_ch2, &dev->_irq_work_entry_ch2);
548
549 if (dev->_is_first_frame_ch2) {
550 dev->_is_first_frame_ch2 = 0;
551
552 if (dev->_isNTSC_ch2) {
553 singlefield_lines += 1;
554 odd_risc_prog_size = ODD_FLD_NTSC_PROG_SIZE;
555 } else {
556 singlefield_lines = PAL_FIELD_HEIGHT;
557 odd_risc_prog_size = ODD_FLD_PAL_PROG_SIZE;
558 }
559
560 if (dev->_dma_virt_start_addr_ch2 != NULL) {
561 if (dev->_pixel_format_ch2 == PIXEL_FRMT_411)
562 line_size_in_bytes = Y411_LINE_SZ;
563 else
564 line_size_in_bytes = Y422_LINE_SZ;
565 risc_phys_jump_addr =
566 dev->_dma_phys_start_addr_ch2 +
567 odd_risc_prog_size;
568
569 rp = cx25821_update_riscprogram_ch2(dev,
570 dev->_dma_virt_start_addr_ch2,
571 TOP_OFFSET, line_size_in_bytes,
572 0x0, singlefield_lines,
573 FIFO_DISABLE, ODD_FIELD);
574
575 /* Jump to Even Risc program of 1st Frame */
576 *(rp++) = cpu_to_le32(RISC_JUMP);
577 *(rp++) = cpu_to_le32(risc_phys_jump_addr);
578 *(rp++) = cpu_to_le32(0);
579 }
580 }
581
582 spin_unlock(&dev->slock);
583 }
584
585 if (dev->_file_status_ch2 == END_OF_FILE) {
586 pr_info("EOF Channel 2 Framecount = %d\n",
587 dev->_frame_count_ch2);
588 return -1;
589 }
590 /* ElSE, set the interrupt mask register, re-enable irq. */
591 int_msk_tmp = cx_read(channel->int_msk);
592 cx_write(channel->int_msk, int_msk_tmp |= _intr_msk);
593
594 return 0;
595 }
596
597 static irqreturn_t cx25821_upstream_irq_ch2(int irq, void *dev_id)
598 {
599 struct cx25821_dev *dev = dev_id;
600 u32 msk_stat, vid_status;
601 int handled = 0;
602 int channel_num = 0;
603 struct sram_channel *sram_ch;
604
605 if (!dev)
606 return -1;
607
608 channel_num = VID_UPSTREAM_SRAM_CHANNEL_J;
609 sram_ch = dev->channels[channel_num].sram_channels;
610
611 msk_stat = cx_read(sram_ch->int_mstat);
612 vid_status = cx_read(sram_ch->int_stat);
613
614 /* Only deal with our interrupt */
615 if (vid_status) {
616 handled =
617 cx25821_video_upstream_irq_ch2(dev, channel_num,
618 vid_status);
619 }
620
621 if (handled < 0)
622 cx25821_stop_upstream_video_ch2(dev);
623 else
624 handled += handled;
625
626 return IRQ_RETVAL(handled);
627 }
628
629 static void cx25821_set_pixelengine_ch2(struct cx25821_dev *dev,
630 struct sram_channel *ch, int pix_format)
631 {
632 int width = WIDTH_D1;
633 int height = dev->_lines_count_ch2;
634 int num_lines, odd_num_lines;
635 u32 value;
636 int vip_mode = PIXEL_ENGINE_VIP1;
637
638 value = ((pix_format & 0x3) << 12) | (vip_mode & 0x7);
639 value &= 0xFFFFFFEF;
640 value |= dev->_isNTSC_ch2 ? 0 : 0x10;
641 cx_write(ch->vid_fmt_ctl, value);
642
643 /*
644 * set number of active pixels in each line. Default is 720
645 * pixels in both NTSC and PAL format
646 */
647 cx_write(ch->vid_active_ctl1, width);
648
649 num_lines = (height / 2) & 0x3FF;
650 odd_num_lines = num_lines;
651
652 if (dev->_isNTSC_ch2)
653 odd_num_lines += 1;
654
655 value = (num_lines << 16) | odd_num_lines;
656
657 /* set number of active lines in field 0 (top) and field 1 (bottom) */
658 cx_write(ch->vid_active_ctl2, value);
659
660 cx_write(ch->vid_cdt_size, VID_CDT_SIZE >> 3);
661 }
662
663 int cx25821_start_video_dma_upstream_ch2(struct cx25821_dev *dev,
664 struct sram_channel *sram_ch)
665 {
666 u32 tmp = 0;
667 int err = 0;
668
669 /*
670 * 656/VIP SRC Upstream Channel I & J and 7 - Host Bus Interface
671 * for channel A-C
672 */
673 tmp = cx_read(VID_CH_MODE_SEL);
674 cx_write(VID_CH_MODE_SEL, tmp | 0x1B0001FF);
675
676 /*
677 * Set the physical start address of the RISC program in the initial
678 * program counter(IPC) member of the cmds.
679 */
680 cx_write(sram_ch->cmds_start + 0, dev->_dma_phys_addr_ch2);
681 cx_write(sram_ch->cmds_start + 4, 0); /* Risc IPC High 64 bits 63-32 */
682
683 /* reset counter */
684 cx_write(sram_ch->gpcnt_ctl, 3);
685
686 /* Clear our bits from the interrupt status register. */
687 cx_write(sram_ch->int_stat, _intr_msk);
688
689 /* Set the interrupt mask register, enable irq. */
690 cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | (1 << sram_ch->irq_bit));
691 tmp = cx_read(sram_ch->int_msk);
692 cx_write(sram_ch->int_msk, tmp |= _intr_msk);
693
694 err =
695 request_irq(dev->pci->irq, cx25821_upstream_irq_ch2,
696 IRQF_SHARED, dev->name, dev);
697 if (err < 0) {
698 pr_err("%s: can't get upstream IRQ %d\n",
699 dev->name, dev->pci->irq);
700 goto fail_irq;
701 }
702 /* Start the DMA engine */
703 tmp = cx_read(sram_ch->dma_ctl);
704 cx_set(sram_ch->dma_ctl, tmp | FLD_VID_RISC_EN);
705
706 dev->_is_running_ch2 = 1;
707 dev->_is_first_frame_ch2 = 1;
708
709 return 0;
710
711 fail_irq:
712 cx25821_dev_unregister(dev);
713 return err;
714 }
715
716 int cx25821_vidupstream_init_ch2(struct cx25821_dev *dev, int channel_select,
717 int pixel_format)
718 {
719 struct sram_channel *sram_ch;
720 u32 tmp;
721 int retval = 0;
722 int err = 0;
723 int data_frame_size = 0;
724 int risc_buffer_size = 0;
725 int str_length = 0;
726
727 if (dev->_is_running_ch2) {
728 pr_info("Video Channel is still running so return!\n");
729 return 0;
730 }
731
732 dev->_channel2_upstream_select = channel_select;
733 sram_ch = dev->channels[channel_select].sram_channels;
734
735 INIT_WORK(&dev->_irq_work_entry_ch2, cx25821_vidups_handler_ch2);
736 dev->_irq_queues_ch2 =
737 create_singlethread_workqueue("cx25821_workqueue2");
738
739 if (!dev->_irq_queues_ch2) {
740 pr_err("create_singlethread_workqueue() for Video FAILED!\n");
741 return -ENOMEM;
742 }
743 /*
744 * 656/VIP SRC Upstream Channel I & J and 7 -
745 * Host Bus Interface for channel A-C
746 */
747 tmp = cx_read(VID_CH_MODE_SEL);
748 cx_write(VID_CH_MODE_SEL, tmp | 0x1B0001FF);
749
750 dev->_is_running_ch2 = 0;
751 dev->_frame_count_ch2 = 0;
752 dev->_file_status_ch2 = RESET_STATUS;
753 dev->_lines_count_ch2 = dev->_isNTSC_ch2 ? 480 : 576;
754 dev->_pixel_format_ch2 = pixel_format;
755 dev->_line_size_ch2 =
756 (dev->_pixel_format_ch2 ==
757 PIXEL_FRMT_422) ? (WIDTH_D1 * 2) : (WIDTH_D1 * 3) / 2;
758 data_frame_size = dev->_isNTSC_ch2 ? NTSC_DATA_BUF_SZ : PAL_DATA_BUF_SZ;
759 risc_buffer_size =
760 dev->_isNTSC_ch2 ? NTSC_RISC_BUF_SIZE : PAL_RISC_BUF_SIZE;
761
762 if (dev->input_filename_ch2) {
763 str_length = strlen(dev->input_filename_ch2);
764 dev->_filename_ch2 = kmalloc(str_length + 1, GFP_KERNEL);
765
766 if (!dev->_filename_ch2)
767 goto error;
768
769 memcpy(dev->_filename_ch2, dev->input_filename_ch2,
770 str_length + 1);
771 } else {
772 str_length = strlen(dev->_defaultname_ch2);
773 dev->_filename_ch2 = kmalloc(str_length + 1, GFP_KERNEL);
774
775 if (!dev->_filename_ch2)
776 goto error;
777
778 memcpy(dev->_filename_ch2, dev->_defaultname_ch2,
779 str_length + 1);
780 }
781
782 /* Default if filename is empty string */
783 if (strcmp(dev->input_filename_ch2, "") == 0) {
784 if (dev->_isNTSC_ch2) {
785 dev->_filename_ch2 =
786 (dev->_pixel_format_ch2 ==
787 PIXEL_FRMT_411) ? "/root/vid411.yuv" :
788 "/root/vidtest.yuv";
789 } else {
790 dev->_filename_ch2 =
791 (dev->_pixel_format_ch2 ==
792 PIXEL_FRMT_411) ? "/root/pal411.yuv" :
793 "/root/pal422.yuv";
794 }
795 }
796
797 retval = cx25821_sram_channel_setup_upstream(dev, sram_ch,
798 dev->_line_size_ch2, 0);
799
800 /* setup fifo + format */
801 cx25821_set_pixelengine_ch2(dev, sram_ch, dev->_pixel_format_ch2);
802
803 dev->upstream_riscbuf_size_ch2 = risc_buffer_size * 2;
804 dev->upstream_databuf_size_ch2 = data_frame_size * 2;
805
806 /* Allocating buffers and prepare RISC program */
807 retval = cx25821_upstream_buffer_prepare_ch2(dev, sram_ch,
808 dev->_line_size_ch2);
809 if (retval < 0) {
810 pr_err("%s: Failed to set up Video upstream buffers!\n",
811 dev->name);
812 goto error;
813 }
814
815 cx25821_start_video_dma_upstream_ch2(dev, sram_ch);
816
817 return 0;
818
819 error:
820 cx25821_dev_unregister(dev);
821
822 return err;
823 }
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