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23#include "cx25821-video.h"
24#include "cx25821-audio-upstream.h"
25
26#include <linux/fs.h>
27#include <linux/errno.h>
28#include <linux/kernel.h>
29#include <linux/init.h>
30#include <linux/module.h>
31#include <linux/syscalls.h>
32#include <linux/file.h>
33#include <linux/fcntl.h>
34#include <linux/delay.h>
35#include <linux/slab.h>
36#include <linux/uaccess.h>
37
38MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards");
39MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>");
40MODULE_LICENSE("GPL");
41
42static int _intr_msk =
43 FLD_AUD_SRC_RISCI1 | FLD_AUD_SRC_OF | FLD_AUD_SRC_SYNC |
44 FLD_AUD_SRC_OPC_ERR;
45
46int cx25821_sram_channel_setup_upstream_audio(struct cx25821_dev *dev,
47 struct sram_channel *ch,
48 unsigned int bpl, u32 risc)
49{
50 unsigned int i, lines;
51 u32 cdt;
52
53 if (ch->cmds_start == 0) {
54 cx_write(ch->ptr1_reg, 0);
55 cx_write(ch->ptr2_reg, 0);
56 cx_write(ch->cnt2_reg, 0);
57 cx_write(ch->cnt1_reg, 0);
58 return 0;
59 }
60
61 bpl = (bpl + 7) & ~7;
62 cdt = ch->cdt;
63 lines = ch->fifo_size / bpl;
64
65 if (lines > 3)
66 lines = 3;
67
68 BUG_ON(lines < 2);
69
70
71 for (i = 0; i < lines; i++) {
72 cx_write(cdt + 16 * i, ch->fifo_start + bpl * i);
73 cx_write(cdt + 16 * i + 4, 0);
74 cx_write(cdt + 16 * i + 8, 0);
75 cx_write(cdt + 16 * i + 12, 0);
76 }
77
78
79 cx_write(ch->cmds_start + 0, risc);
80
81 cx_write(ch->cmds_start + 4, 0);
82 cx_write(ch->cmds_start + 8, cdt);
83 cx_write(ch->cmds_start + 12, AUDIO_CDT_SIZE_QW);
84 cx_write(ch->cmds_start + 16, ch->ctrl_start);
85
86
87 cx_write(ch->cmds_start + 20, AUDIO_IQ_SIZE_DW);
88
89 for (i = 24; i < 80; i += 4)
90 cx_write(ch->cmds_start + i, 0);
91
92
93 cx_write(ch->ptr1_reg, ch->fifo_start);
94 cx_write(ch->ptr2_reg, cdt);
95 cx_write(ch->cnt2_reg, AUDIO_CDT_SIZE_QW);
96 cx_write(ch->cnt1_reg, AUDIO_CLUSTER_SIZE_QW - 1);
97
98 return 0;
99}
100
101static __le32 *cx25821_risc_field_upstream_audio(struct cx25821_dev *dev,
102 __le32 *rp,
103 dma_addr_t databuf_phys_addr,
104 unsigned int bpl,
105 int fifo_enable)
106{
107 unsigned int line;
108 struct sram_channel *sram_ch =
109 &dev->sram_channels[dev->_audio_upstream_channel_select];
110 int offset = 0;
111
112
113 for (line = 0; line < LINES_PER_AUDIO_BUFFER; line++) {
114 *(rp++) = cpu_to_le32(RISC_READ | RISC_SOL | RISC_EOL | bpl);
115 *(rp++) = cpu_to_le32(databuf_phys_addr + offset);
116 *(rp++) = cpu_to_le32(0);
117
118
119
120
121
122 if (fifo_enable && line == 2) {
123 *(rp++) = RISC_WRITECR;
124 *(rp++) = sram_ch->dma_ctl;
125 *(rp++) = sram_ch->fld_aud_fifo_en;
126 *(rp++) = 0x00000020;
127 }
128
129 offset += AUDIO_LINE_SIZE;
130 }
131
132 return rp;
133}
134
135int cx25821_risc_buffer_upstream_audio(struct cx25821_dev *dev,
136 struct pci_dev *pci,
137 unsigned int bpl, unsigned int lines)
138{
139 __le32 *rp;
140 int fifo_enable = 0;
141 int frame = 0, i = 0;
142 int frame_size = AUDIO_DATA_BUF_SZ;
143 int databuf_offset = 0;
144 int risc_flag = RISC_CNT_INC;
145 dma_addr_t risc_phys_jump_addr;
146
147
148 rp = dev->_risc_virt_addr;
149
150
151 *(rp++) = cpu_to_le32(RISC_RESYNC | AUDIO_SYNC_LINE);
152
153 for (frame = 0; frame < NUM_AUDIO_FRAMES; frame++) {
154 databuf_offset = frame_size * frame;
155
156 if (frame == 0) {
157 fifo_enable = 1;
158 risc_flag = RISC_CNT_RESET;
159 } else {
160 fifo_enable = 0;
161 risc_flag = RISC_CNT_INC;
162 }
163
164
165 if ((frame + 1) == NUM_AUDIO_FRAMES) {
166 risc_phys_jump_addr =
167 dev->_risc_phys_start_addr +
168 RISC_SYNC_INSTRUCTION_SIZE;
169 } else {
170 risc_phys_jump_addr =
171 dev->_risc_phys_start_addr +
172 RISC_SYNC_INSTRUCTION_SIZE +
173 AUDIO_RISC_DMA_BUF_SIZE * (frame + 1);
174 }
175
176 rp = cx25821_risc_field_upstream_audio(dev, rp,
177 dev->
178 _audiodata_buf_phys_addr
179 + databuf_offset, bpl,
180 fifo_enable);
181
182 if (USE_RISC_NOOP_AUDIO) {
183 for (i = 0; i < NUM_NO_OPS; i++)
184 *(rp++) = cpu_to_le32(RISC_NOOP);
185 }
186
187
188
189 *(rp++) = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | risc_flag);
190 *(rp++) = cpu_to_le32(risc_phys_jump_addr);
191 *(rp++) = cpu_to_le32(0);
192
193
194 rp = dev->_risc_virt_addr + RISC_SYNC_INSTRUCTION_SIZE / 4 +
195 (AUDIO_RISC_DMA_BUF_SIZE * (frame + 1) / 4);
196 }
197
198 return 0;
199}
200
201void cx25821_free_memory_audio(struct cx25821_dev *dev)
202{
203 if (dev->_risc_virt_addr) {
204 pci_free_consistent(dev->pci, dev->_audiorisc_size,
205 dev->_risc_virt_addr, dev->_risc_phys_addr);
206 dev->_risc_virt_addr = NULL;
207 }
208
209 if (dev->_audiodata_buf_virt_addr) {
210 pci_free_consistent(dev->pci, dev->_audiodata_buf_size,
211 dev->_audiodata_buf_virt_addr,
212 dev->_audiodata_buf_phys_addr);
213 dev->_audiodata_buf_virt_addr = NULL;
214 }
215}
216
217void cx25821_stop_upstream_audio(struct cx25821_dev *dev)
218{
219 struct sram_channel *sram_ch =
220 &dev->sram_channels[AUDIO_UPSTREAM_SRAM_CHANNEL_B];
221 u32 tmp = 0;
222
223 if (!dev->_audio_is_running) {
224 printk(KERN_DEBUG
225 "cx25821: No audio file is currently running so return!\n");
226 return;
227 }
228
229 cx_write(sram_ch->int_msk, 0);
230
231
232 tmp = cx_read(sram_ch->dma_ctl);
233 cx_write(sram_ch->dma_ctl,
234 tmp & ~(sram_ch->fld_aud_fifo_en | sram_ch->fld_aud_risc_en));
235
236
237 if (dev->_audiodata_buf_virt_addr)
238 memset(dev->_audiodata_buf_virt_addr, 0,
239 dev->_audiodata_buf_size);
240
241 dev->_audio_is_running = 0;
242 dev->_is_first_audio_frame = 0;
243 dev->_audioframe_count = 0;
244 dev->_audiofile_status = END_OF_FILE;
245
246 if (dev->_irq_audio_queues) {
247 kfree(dev->_irq_audio_queues);
248 dev->_irq_audio_queues = NULL;
249 }
250
251 if (dev->_audiofilename != NULL)
252 kfree(dev->_audiofilename);
253}
254
255void cx25821_free_mem_upstream_audio(struct cx25821_dev *dev)
256{
257 if (dev->_audio_is_running)
258 cx25821_stop_upstream_audio(dev);
259
260 cx25821_free_memory_audio(dev);
261}
262
263int cx25821_get_audio_data(struct cx25821_dev *dev,
264 struct sram_channel *sram_ch)
265{
266 struct file *myfile;
267 int frame_index_temp = dev->_audioframe_index;
268 int i = 0;
269 int line_size = AUDIO_LINE_SIZE;
270 int frame_size = AUDIO_DATA_BUF_SZ;
271 int frame_offset = frame_size * frame_index_temp;
272 ssize_t vfs_read_retval = 0;
273 char mybuf[line_size];
274 loff_t file_offset = dev->_audioframe_count * frame_size;
275 loff_t pos;
276 mm_segment_t old_fs;
277
278 if (dev->_audiofile_status == END_OF_FILE)
279 return 0;
280
281 myfile = filp_open(dev->_audiofilename, O_RDONLY | O_LARGEFILE, 0);
282
283 if (IS_ERR(myfile)) {
284 const int open_errno = -PTR_ERR(myfile);
285 printk(KERN_ERR "%s(): ERROR opening file(%s) with errno = %d!\n",
286 __func__, dev->_audiofilename, open_errno);
287 return PTR_ERR(myfile);
288 } else {
289 if (!(myfile->f_op)) {
290 printk("%s: File has no file operations registered!\n",
291 __func__);
292 filp_close(myfile, NULL);
293 return -EIO;
294 }
295
296 if (!myfile->f_op->read) {
297 printk("%s: File has no READ operations registered!\n",
298 __func__);
299 filp_close(myfile, NULL);
300 return -EIO;
301 }
302
303 pos = myfile->f_pos;
304 old_fs = get_fs();
305 set_fs(KERNEL_DS);
306
307 for (i = 0; i < dev->_audio_lines_count; i++) {
308 pos = file_offset;
309
310 vfs_read_retval =
311 vfs_read(myfile, mybuf, line_size, &pos);
312
313 if (vfs_read_retval > 0 && vfs_read_retval == line_size
314 && dev->_audiodata_buf_virt_addr != NULL) {
315 memcpy((void *)(dev->_audiodata_buf_virt_addr +
316 frame_offset / 4), mybuf,
317 vfs_read_retval);
318 }
319
320 file_offset += vfs_read_retval;
321 frame_offset += vfs_read_retval;
322
323 if (vfs_read_retval < line_size) {
324 printk(KERN_INFO
325 "Done: exit %s() since no more bytes to read from Audio file.\n",
326 __func__);
327 break;
328 }
329 }
330
331 if (i > 0)
332 dev->_audioframe_count++;
333
334 dev->_audiofile_status =
335 (vfs_read_retval == line_size) ? IN_PROGRESS : END_OF_FILE;
336
337 set_fs(old_fs);
338 filp_close(myfile, NULL);
339 }
340
341 return 0;
342}
343
344static void cx25821_audioups_handler(struct work_struct *work)
345{
346 struct cx25821_dev *dev =
347 container_of(work, struct cx25821_dev, _audio_work_entry);
348
349 if (!dev) {
350 printk(KERN_ERR "ERROR %s(): since container_of(work_struct) FAILED!\n",
351 __func__);
352 return;
353 }
354
355 cx25821_get_audio_data(dev,
356 &dev->sram_channels[dev->
357 _audio_upstream_channel_select]);
358}
359
360int cx25821_openfile_audio(struct cx25821_dev *dev,
361 struct sram_channel *sram_ch)
362{
363 struct file *myfile;
364 int i = 0, j = 0;
365 int line_size = AUDIO_LINE_SIZE;
366 ssize_t vfs_read_retval = 0;
367 char mybuf[line_size];
368 loff_t pos;
369 loff_t offset = (unsigned long)0;
370 mm_segment_t old_fs;
371
372 myfile = filp_open(dev->_audiofilename, O_RDONLY | O_LARGEFILE, 0);
373
374 if (IS_ERR(myfile)) {
375 const int open_errno = -PTR_ERR(myfile);
376 printk(KERN_ERR "%s(): ERROR opening file(%s) with errno = %d!\n",
377 __func__, dev->_audiofilename, open_errno);
378 return PTR_ERR(myfile);
379 } else {
380 if (!(myfile->f_op)) {
381 printk("%s: File has no file operations registered!\n",
382 __func__);
383 filp_close(myfile, NULL);
384 return -EIO;
385 }
386
387 if (!myfile->f_op->read) {
388 printk("%s: File has no READ operations registered!\n",
389 __func__);
390 filp_close(myfile, NULL);
391 return -EIO;
392 }
393
394 pos = myfile->f_pos;
395 old_fs = get_fs();
396 set_fs(KERNEL_DS);
397
398 for (j = 0; j < NUM_AUDIO_FRAMES; j++) {
399 for (i = 0; i < dev->_audio_lines_count; i++) {
400 pos = offset;
401
402 vfs_read_retval =
403 vfs_read(myfile, mybuf, line_size, &pos);
404
405 if (vfs_read_retval > 0
406 && vfs_read_retval == line_size
407 && dev->_audiodata_buf_virt_addr != NULL) {
408 memcpy((void *)(dev->
409 _audiodata_buf_virt_addr
410 + offset / 4), mybuf,
411 vfs_read_retval);
412 }
413
414 offset += vfs_read_retval;
415
416 if (vfs_read_retval < line_size) {
417 printk(KERN_INFO
418 "Done: exit %s() since no more bytes to read from Audio file.\n",
419 __func__);
420 break;
421 }
422 }
423
424 if (i > 0)
425 dev->_audioframe_count++;
426
427 if (vfs_read_retval < line_size)
428 break;
429 }
430
431 dev->_audiofile_status =
432 (vfs_read_retval == line_size) ? IN_PROGRESS : END_OF_FILE;
433
434 set_fs(old_fs);
435 myfile->f_pos = 0;
436 filp_close(myfile, NULL);
437 }
438
439 return 0;
440}
441
442static int cx25821_audio_upstream_buffer_prepare(struct cx25821_dev *dev,
443 struct sram_channel *sram_ch,
444 int bpl)
445{
446 int ret = 0;
447 dma_addr_t dma_addr;
448 dma_addr_t data_dma_addr;
449
450 cx25821_free_memory_audio(dev);
451
452 dev->_risc_virt_addr =
453 pci_alloc_consistent(dev->pci, dev->audio_upstream_riscbuf_size,
454 &dma_addr);
455 dev->_risc_virt_start_addr = dev->_risc_virt_addr;
456 dev->_risc_phys_start_addr = dma_addr;
457 dev->_risc_phys_addr = dma_addr;
458 dev->_audiorisc_size = dev->audio_upstream_riscbuf_size;
459
460 if (!dev->_risc_virt_addr) {
461 printk(KERN_DEBUG
462 "cx25821 ERROR: pci_alloc_consistent() FAILED to allocate memory for RISC program! Returning.\n");
463 return -ENOMEM;
464 }
465
466 memset(dev->_risc_virt_addr, 0, dev->_audiorisc_size);
467
468
469 dev->_audiodata_buf_virt_addr =
470 pci_alloc_consistent(dev->pci, dev->audio_upstream_databuf_size,
471 &data_dma_addr);
472 dev->_audiodata_buf_phys_addr = data_dma_addr;
473 dev->_audiodata_buf_size = dev->audio_upstream_databuf_size;
474
475 if (!dev->_audiodata_buf_virt_addr) {
476 printk(KERN_DEBUG
477 "cx25821 ERROR: pci_alloc_consistent() FAILED to allocate memory for data buffer! Returning.\n");
478 return -ENOMEM;
479 }
480
481 memset(dev->_audiodata_buf_virt_addr, 0, dev->_audiodata_buf_size);
482
483 ret = cx25821_openfile_audio(dev, sram_ch);
484 if (ret < 0)
485 return ret;
486
487
488 ret =
489 cx25821_risc_buffer_upstream_audio(dev, dev->pci, bpl,
490 dev->_audio_lines_count);
491 if (ret < 0) {
492 printk(KERN_DEBUG
493 "cx25821 ERROR creating audio upstream RISC programs!\n");
494 goto error;
495 }
496
497 return 0;
498
499error:
500 return ret;
501}
502
503int cx25821_audio_upstream_irq(struct cx25821_dev *dev, int chan_num,
504 u32 status)
505{
506 int i = 0;
507 u32 int_msk_tmp;
508 struct sram_channel *channel = &dev->sram_channels[chan_num];
509 dma_addr_t risc_phys_jump_addr;
510 __le32 *rp;
511
512 if (status & FLD_AUD_SRC_RISCI1) {
513
514 u32 prog_cnt = cx_read(channel->gpcnt);
515
516
517
518 cx_write(channel->int_msk, 0);
519 cx_write(channel->int_stat, cx_read(channel->int_stat));
520
521 spin_lock(&dev->slock);
522
523 while (prog_cnt != dev->_last_index_irq) {
524
525 if (dev->_last_index_irq < (NUMBER_OF_PROGRAMS - 1))
526 dev->_last_index_irq++;
527 else
528 dev->_last_index_irq = 0;
529
530 dev->_audioframe_index = dev->_last_index_irq;
531
532 queue_work(dev->_irq_audio_queues,
533 &dev->_audio_work_entry);
534 }
535
536 if (dev->_is_first_audio_frame) {
537 dev->_is_first_audio_frame = 0;
538
539 if (dev->_risc_virt_start_addr != NULL) {
540 risc_phys_jump_addr =
541 dev->_risc_phys_start_addr +
542 RISC_SYNC_INSTRUCTION_SIZE +
543 AUDIO_RISC_DMA_BUF_SIZE;
544
545 rp = cx25821_risc_field_upstream_audio(dev,
546 dev->
547 _risc_virt_start_addr
548 + 1,
549 dev->
550 _audiodata_buf_phys_addr,
551 AUDIO_LINE_SIZE,
552 FIFO_DISABLE);
553
554 if (USE_RISC_NOOP_AUDIO) {
555 for (i = 0; i < NUM_NO_OPS; i++) {
556 *(rp++) =
557 cpu_to_le32(RISC_NOOP);
558 }
559 }
560
561 *(rp++) =
562 cpu_to_le32(RISC_JUMP | RISC_IRQ1 |
563 RISC_CNT_RESET);
564 *(rp++) = cpu_to_le32(risc_phys_jump_addr);
565 *(rp++) = cpu_to_le32(0);
566 }
567 }
568
569 spin_unlock(&dev->slock);
570 } else {
571 if (status & FLD_AUD_SRC_OF)
572 printk("%s: Audio Received Overflow Error Interrupt!\n",
573 __func__);
574
575 if (status & FLD_AUD_SRC_SYNC)
576 printk("%s: Audio Received Sync Error Interrupt!\n",
577 __func__);
578
579 if (status & FLD_AUD_SRC_OPC_ERR)
580 printk("%s: Audio Received OpCode Error Interrupt!\n",
581 __func__);
582
583
584
585 cx_write(channel->int_stat, cx_read(channel->int_stat));
586 }
587
588 if (dev->_audiofile_status == END_OF_FILE) {
589 printk("cx25821: EOF Channel Audio Framecount = %d\n",
590 dev->_audioframe_count);
591 return -1;
592 }
593
594 int_msk_tmp = cx_read(channel->int_msk);
595 cx_write(channel->int_msk, int_msk_tmp |= _intr_msk);
596
597 return 0;
598}
599
600static irqreturn_t cx25821_upstream_irq_audio(int irq, void *dev_id)
601{
602 struct cx25821_dev *dev = dev_id;
603 u32 msk_stat, audio_status;
604 int handled = 0;
605 struct sram_channel *sram_ch;
606
607 if (!dev)
608 return -1;
609
610 sram_ch = &dev->sram_channels[dev->_audio_upstream_channel_select];
611
612 msk_stat = cx_read(sram_ch->int_mstat);
613 audio_status = cx_read(sram_ch->int_stat);
614
615
616 if (audio_status) {
617 handled =
618 cx25821_audio_upstream_irq(dev,
619 dev->
620 _audio_upstream_channel_select,
621 audio_status);
622 }
623
624 if (handled < 0)
625 cx25821_stop_upstream_audio(dev);
626 else
627 handled += handled;
628
629 return IRQ_RETVAL(handled);
630}
631
632static void cx25821_wait_fifo_enable(struct cx25821_dev *dev,
633 struct sram_channel *sram_ch)
634{
635 int count = 0;
636 u32 tmp;
637
638 do {
639
640
641 udelay(10);
642
643 tmp = cx_read(sram_ch->dma_ctl);
644
645
646 if (count++ > 1000) {
647 printk
648 ("cx25821 ERROR: %s() fifo is NOT turned on. Timeout!\n",
649 __func__);
650 return;
651 }
652
653 } while (!(tmp & sram_ch->fld_aud_fifo_en));
654
655}
656
657int cx25821_start_audio_dma_upstream(struct cx25821_dev *dev,
658 struct sram_channel *sram_ch)
659{
660 u32 tmp = 0;
661 int err = 0;
662
663
664
665 cx_write(sram_ch->cmds_start + 0, dev->_risc_phys_addr);
666
667 cx_write(sram_ch->cmds_start + 4, 0);
668
669
670 cx_write(sram_ch->gpcnt_ctl, 3);
671
672
673
674 cx_write(sram_ch->aud_length, AUDIO_LINE_SIZE & FLD_AUD_DST_LN_LNGTH);
675
676
677 tmp = cx_read(sram_ch->aud_cfg);
678 tmp |=
679 FLD_AUD_SRC_ENABLE | FLD_AUD_DST_PK_MODE | FLD_AUD_CLK_ENABLE |
680 FLD_AUD_MASTER_MODE | FLD_AUD_CLK_SELECT_PLL_D | FLD_AUD_SONY_MODE;
681 cx_write(sram_ch->aud_cfg, tmp);
682
683
684 tmp = cx_read(sram_ch->int_stat);
685 cx_write(sram_ch->int_stat, tmp);
686
687
688 cx_write(sram_ch->int_stat, _intr_msk);
689
690
691 cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | (1 << sram_ch->irq_bit));
692 tmp = cx_read(sram_ch->int_msk);
693 cx_write(sram_ch->int_msk, tmp |= _intr_msk);
694
695 err =
696 request_irq(dev->pci->irq, cx25821_upstream_irq_audio,
697 IRQF_SHARED | IRQF_DISABLED, dev->name, dev);
698 if (err < 0) {
699 printk(KERN_ERR "%s: can't get upstream IRQ %d\n", dev->name,
700 dev->pci->irq);
701 goto fail_irq;
702 }
703
704
705 tmp = cx_read(sram_ch->dma_ctl);
706 cx_set(sram_ch->dma_ctl, tmp | sram_ch->fld_aud_risc_en);
707
708 dev->_audio_is_running = 1;
709 dev->_is_first_audio_frame = 1;
710
711
712 cx25821_wait_fifo_enable(dev, sram_ch);
713
714 return 0;
715
716fail_irq:
717 cx25821_dev_unregister(dev);
718 return err;
719}
720
721int cx25821_audio_upstream_init(struct cx25821_dev *dev, int channel_select)
722{
723 struct sram_channel *sram_ch;
724 int retval = 0;
725 int err = 0;
726 int str_length = 0;
727
728 if (dev->_audio_is_running) {
729 printk("Audio Channel is still running so return!\n");
730 return 0;
731 }
732
733 dev->_audio_upstream_channel_select = channel_select;
734 sram_ch = &dev->sram_channels[channel_select];
735
736
737 INIT_WORK(&dev->_audio_work_entry, cx25821_audioups_handler);
738 dev->_irq_audio_queues =
739 create_singlethread_workqueue("cx25821_audioworkqueue");
740
741 if (!dev->_irq_audio_queues) {
742 printk(KERN_DEBUG
743 "cx25821 ERROR: create_singlethread_workqueue() for Audio FAILED!\n");
744 return -ENOMEM;
745 }
746
747 dev->_last_index_irq = 0;
748 dev->_audio_is_running = 0;
749 dev->_audioframe_count = 0;
750 dev->_audiofile_status = RESET_STATUS;
751 dev->_audio_lines_count = LINES_PER_AUDIO_BUFFER;
752 _line_size = AUDIO_LINE_SIZE;
753
754 if (dev->input_audiofilename) {
755 str_length = strlen(dev->input_audiofilename);
756 dev->_audiofilename = kmalloc(str_length + 1, GFP_KERNEL);
757
758 if (!dev->_audiofilename)
759 goto error;
760
761 memcpy(dev->_audiofilename, dev->input_audiofilename,
762 str_length + 1);
763
764
765 if (strcmp(dev->input_audiofilename, "") == 0) {
766 dev->_audiofilename = "/root/audioGOOD.wav";
767 }
768 } else {
769 str_length = strlen(_defaultAudioName);
770 dev->_audiofilename = kmalloc(str_length + 1, GFP_KERNEL);
771
772 if (!dev->_audiofilename)
773 goto error;
774
775 memcpy(dev->_audiofilename, _defaultAudioName, str_length + 1);
776 }
777
778 retval =
779 cx25821_sram_channel_setup_upstream_audio(dev, sram_ch, _line_size,
780 0);
781
782 dev->audio_upstream_riscbuf_size =
783 AUDIO_RISC_DMA_BUF_SIZE * NUM_AUDIO_PROGS +
784 RISC_SYNC_INSTRUCTION_SIZE;
785 dev->audio_upstream_databuf_size = AUDIO_DATA_BUF_SZ * NUM_AUDIO_PROGS;
786
787
788 retval =
789 cx25821_audio_upstream_buffer_prepare(dev, sram_ch, _line_size);
790 if (retval < 0) {
791 printk(KERN_ERR
792 "%s: Failed to set up Audio upstream buffers!\n",
793 dev->name);
794 goto error;
795 }
796
797 cx25821_start_audio_dma_upstream(dev, sram_ch);
798
799 return 0;
800
801error:
802 cx25821_dev_unregister(dev);
803
804 return err;
805}
806
