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Linux 4.19.133
[linux/fpc-iii.git] / drivers / media / pci / cx88 / cx88-alsa.c
blob89a65478ae36d4eed134fccbf69a2223c9aae6f2
1 /*
2 * Support for audio capture
3 * PCI function #1 of the cx2388x.
4 *
5 * (c) 2007 Trent Piepho <xyzzy@speakeasy.org>
6 * (c) 2005,2006 Ricardo Cerqueira <v4l@cerqueira.org>
7 * (c) 2005 Mauro Carvalho Chehab <mchehab@kernel.org>
8 * Based on a dummy cx88 module by Gerd Knorr <kraxel@bytesex.org>
9 * Based on dummy.c by Jaroslav Kysela <perex@perex.cz>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 */
21
22 #include "cx88.h"
23 #include "cx88-reg.h"
24
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/delay.h>
28 #include <linux/device.h>
29 #include <linux/interrupt.h>
30 #include <linux/vmalloc.h>
31 #include <linux/dma-mapping.h>
32 #include <linux/pci.h>
33 #include <linux/slab.h>
34
35 #include <sound/core.h>
36 #include <sound/pcm.h>
37 #include <sound/pcm_params.h>
38 #include <sound/control.h>
39 #include <sound/initval.h>
40 #include <sound/tlv.h>
41 #include <media/i2c/wm8775.h>
42
43 #define dprintk(level, fmt, arg...) do { \
44 if (debug + 1 > level) \
45 printk(KERN_DEBUG pr_fmt("%s: alsa: " fmt), \
46 chip->core->name, ##arg); \
47 } while (0)
48
49 /*
50 * Data type declarations - Can be moded to a header file later
51 */
52
53 struct cx88_audio_buffer {
54 unsigned int bpl;
55 struct cx88_riscmem risc;
56 void *vaddr;
57 struct scatterlist *sglist;
58 int sglen;
59 int nr_pages;
60 };
61
62 struct cx88_audio_dev {
63 struct cx88_core *core;
64 struct cx88_dmaqueue q;
65
66 /* pci i/o */
67 struct pci_dev *pci;
68
69 /* audio controls */
70 int irq;
71
72 struct snd_card *card;
73
74 spinlock_t reg_lock;
75 atomic_t count;
76
77 unsigned int dma_size;
78 unsigned int period_size;
79 unsigned int num_periods;
80
81 struct cx88_audio_buffer *buf;
82
83 struct snd_pcm_substream *substream;
84 };
85
86 /*
87 * Module global static vars
88 */
89
90 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
91 static const char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
92 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
93
94 module_param_array(enable, bool, NULL, 0444);
95 MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
96
97 module_param_array(index, int, NULL, 0444);
98 MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
99
100 /*
101 * Module macros
102 */
103
104 MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
105 MODULE_AUTHOR("Ricardo Cerqueira");
106 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@kernel.org>");
107 MODULE_LICENSE("GPL");
108 MODULE_VERSION(CX88_VERSION);
109
110 MODULE_SUPPORTED_DEVICE("{{Conexant,23881},{{Conexant,23882},{{Conexant,23883}");
111 static unsigned int debug;
112 module_param(debug, int, 0644);
113 MODULE_PARM_DESC(debug, "enable debug messages");
114
115 /*
116 * Module specific functions
117 */
118
119 /*
120 * BOARD Specific: Sets audio DMA
121 */
122
123 static int _cx88_start_audio_dma(struct cx88_audio_dev *chip)
124 {
125 struct cx88_audio_buffer *buf = chip->buf;
126 struct cx88_core *core = chip->core;
127 const struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
128
129 /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
130 cx_clear(MO_AUD_DMACNTRL, 0x11);
131
132 /* setup fifo + format - out channel */
133 cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma);
134
135 /* sets bpl size */
136 cx_write(MO_AUDD_LNGTH, buf->bpl);
137
138 /* reset counter */
139 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
140 atomic_set(&chip->count, 0);
141
142 dprintk(1,
143 "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d byte buffer\n",
144 buf->bpl, cx_read(audio_ch->cmds_start + 8) >> 1,
145 chip->num_periods, buf->bpl * chip->num_periods);
146
147 /* Enables corresponding bits at AUD_INT_STAT */
148 cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
149 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
150
151 /* Clean any pending interrupt bits already set */
152 cx_write(MO_AUD_INTSTAT, ~0);
153
154 /* enable audio irqs */
155 cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
156
157 /* start dma */
158
159 /* Enables Risc Processor */
160 cx_set(MO_DEV_CNTRL2, (1 << 5));
161 /* audio downstream FIFO and RISC enable */
162 cx_set(MO_AUD_DMACNTRL, 0x11);
163
164 if (debug)
165 cx88_sram_channel_dump(chip->core, audio_ch);
166
167 return 0;
168 }
169
170 /*
171 * BOARD Specific: Resets audio DMA
172 */
173 static int _cx88_stop_audio_dma(struct cx88_audio_dev *chip)
174 {
175 struct cx88_core *core = chip->core;
176
177 dprintk(1, "Stopping audio DMA\n");
178
179 /* stop dma */
180 cx_clear(MO_AUD_DMACNTRL, 0x11);
181
182 /* disable irqs */
183 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
184 cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
185 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
186
187 if (debug)
188 cx88_sram_channel_dump(chip->core,
189 &cx88_sram_channels[SRAM_CH25]);
190
191 return 0;
192 }
193
194 #define MAX_IRQ_LOOP 50
195
196 /*
197 * BOARD Specific: IRQ dma bits
198 */
199 static const char *cx88_aud_irqs[32] = {
200 "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
201 NULL, /* reserved */
202 "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
203 NULL, /* reserved */
204 "dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */
205 NULL, /* reserved */
206 "dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */
207 NULL, /* reserved */
208 "opc_err", "par_err", "rip_err", /* 16-18 */
209 "pci_abort", "ber_irq", "mchg_irq" /* 19-21 */
210 };
211
212 /*
213 * BOARD Specific: Threats IRQ audio specific calls
214 */
215 static void cx8801_aud_irq(struct cx88_audio_dev *chip)
216 {
217 struct cx88_core *core = chip->core;
218 u32 status, mask;
219
220 status = cx_read(MO_AUD_INTSTAT);
221 mask = cx_read(MO_AUD_INTMSK);
222 if (0 == (status & mask))
223 return;
224 cx_write(MO_AUD_INTSTAT, status);
225 if (debug > 1 || (status & mask & ~0xff))
226 cx88_print_irqbits("irq aud",
227 cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
228 status, mask);
229 /* risc op code error */
230 if (status & AUD_INT_OPC_ERR) {
231 pr_warn("Audio risc op code error\n");
232 cx_clear(MO_AUD_DMACNTRL, 0x11);
233 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
234 }
235 if (status & AUD_INT_DN_SYNC) {
236 dprintk(1, "Downstream sync error\n");
237 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
238 return;
239 }
240 /* risc1 downstream */
241 if (status & AUD_INT_DN_RISCI1) {
242 atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT));
243 snd_pcm_period_elapsed(chip->substream);
244 }
245 /* FIXME: Any other status should deserve a special handling? */
246 }
247
248 /*
249 * BOARD Specific: Handles IRQ calls
250 */
251 static irqreturn_t cx8801_irq(int irq, void *dev_id)
252 {
253 struct cx88_audio_dev *chip = dev_id;
254 struct cx88_core *core = chip->core;
255 u32 status;
256 int loop, handled = 0;
257
258 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
259 status = cx_read(MO_PCI_INTSTAT) &
260 (core->pci_irqmask | PCI_INT_AUDINT);
261 if (status == 0)
262 goto out;
263 dprintk(3, "cx8801_irq loop %d/%d, status %x\n",
264 loop, MAX_IRQ_LOOP, status);
265 handled = 1;
266 cx_write(MO_PCI_INTSTAT, status);
267
268 if (status & core->pci_irqmask)
269 cx88_core_irq(core, status);
270 if (status & PCI_INT_AUDINT)
271 cx8801_aud_irq(chip);
272 }
273
274 if (loop == MAX_IRQ_LOOP) {
275 pr_err("IRQ loop detected, disabling interrupts\n");
276 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
277 }
278
279 out:
280 return IRQ_RETVAL(handled);
281 }
282
283 static int cx88_alsa_dma_init(struct cx88_audio_dev *chip, int nr_pages)
284 {
285 struct cx88_audio_buffer *buf = chip->buf;
286 struct page *pg;
287 int i;
288
289 buf->vaddr = vmalloc_32(nr_pages << PAGE_SHIFT);
290 if (!buf->vaddr) {
291 dprintk(1, "vmalloc_32(%d pages) failed\n", nr_pages);
292 return -ENOMEM;
293 }
294
295 dprintk(1, "vmalloc is at addr %p, size=%d\n",
296 buf->vaddr, nr_pages << PAGE_SHIFT);
297
298 memset(buf->vaddr, 0, nr_pages << PAGE_SHIFT);
299 buf->nr_pages = nr_pages;
300
301 buf->sglist = vzalloc(array_size(sizeof(*buf->sglist), buf->nr_pages));
302 if (!buf->sglist)
303 goto vzalloc_err;
304
305 sg_init_table(buf->sglist, buf->nr_pages);
306 for (i = 0; i < buf->nr_pages; i++) {
307 pg = vmalloc_to_page(buf->vaddr + i * PAGE_SIZE);
308 if (!pg)
309 goto vmalloc_to_page_err;
310 sg_set_page(&buf->sglist[i], pg, PAGE_SIZE, 0);
311 }
312 return 0;
313
314 vmalloc_to_page_err:
315 vfree(buf->sglist);
316 buf->sglist = NULL;
317 vzalloc_err:
318 vfree(buf->vaddr);
319 buf->vaddr = NULL;
320 return -ENOMEM;
321 }
322
323 static int cx88_alsa_dma_map(struct cx88_audio_dev *dev)
324 {
325 struct cx88_audio_buffer *buf = dev->buf;
326
327 buf->sglen = dma_map_sg(&dev->pci->dev, buf->sglist,
328 buf->nr_pages, PCI_DMA_FROMDEVICE);
329
330 if (buf->sglen == 0) {
331 pr_warn("%s: cx88_alsa_map_sg failed\n", __func__);
332 return -ENOMEM;
333 }
334 return 0;
335 }
336
337 static int cx88_alsa_dma_unmap(struct cx88_audio_dev *dev)
338 {
339 struct cx88_audio_buffer *buf = dev->buf;
340
341 if (!buf->sglen)
342 return 0;
343
344 dma_unmap_sg(&dev->pci->dev, buf->sglist, buf->sglen,
345 PCI_DMA_FROMDEVICE);
346 buf->sglen = 0;
347 return 0;
348 }
349
350 static int cx88_alsa_dma_free(struct cx88_audio_buffer *buf)
351 {
352 vfree(buf->sglist);
353 buf->sglist = NULL;
354 vfree(buf->vaddr);
355 buf->vaddr = NULL;
356 return 0;
357 }
358
359 static int dsp_buffer_free(struct cx88_audio_dev *chip)
360 {
361 struct cx88_riscmem *risc = &chip->buf->risc;
362
363 WARN_ON(!chip->dma_size);
364
365 dprintk(2, "Freeing buffer\n");
366 cx88_alsa_dma_unmap(chip);
367 cx88_alsa_dma_free(chip->buf);
368 if (risc->cpu)
369 pci_free_consistent(chip->pci, risc->size,
370 risc->cpu, risc->dma);
371 kfree(chip->buf);
372
373 chip->buf = NULL;
374
375 return 0;
376 }
377
378 /*
379 * ALSA PCM Interface
380 */
381
382 /*
383 * Digital hardware definition
384 */
385 #define DEFAULT_FIFO_SIZE 4096
386 static const struct snd_pcm_hardware snd_cx88_digital_hw = {
387 .info = SNDRV_PCM_INFO_MMAP |
388 SNDRV_PCM_INFO_INTERLEAVED |
389 SNDRV_PCM_INFO_BLOCK_TRANSFER |
390 SNDRV_PCM_INFO_MMAP_VALID,
391 .formats = SNDRV_PCM_FMTBIT_S16_LE,
392
393 .rates = SNDRV_PCM_RATE_48000,
394 .rate_min = 48000,
395 .rate_max = 48000,
396 .channels_min = 2,
397 .channels_max = 2,
398 /*
399 * Analog audio output will be full of clicks and pops if there
400 * are not exactly four lines in the SRAM FIFO buffer.
401 */
402 .period_bytes_min = DEFAULT_FIFO_SIZE / 4,
403 .period_bytes_max = DEFAULT_FIFO_SIZE / 4,
404 .periods_min = 1,
405 .periods_max = 1024,
406 .buffer_bytes_max = (1024 * 1024),
407 };
408
409 /*
410 * audio pcm capture open callback
411 */
412 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
413 {
414 struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream);
415 struct snd_pcm_runtime *runtime = substream->runtime;
416 int err;
417
418 if (!chip) {
419 pr_err("BUG: cx88 can't find device struct. Can't proceed with open\n");
420 return -ENODEV;
421 }
422
423 err = snd_pcm_hw_constraint_pow2(runtime, 0,
424 SNDRV_PCM_HW_PARAM_PERIODS);
425 if (err < 0)
426 goto _error;
427
428 chip->substream = substream;
429
430 runtime->hw = snd_cx88_digital_hw;
431
432 if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
433 unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
434
435 bpl &= ~7; /* must be multiple of 8 */
436 runtime->hw.period_bytes_min = bpl;
437 runtime->hw.period_bytes_max = bpl;
438 }
439
440 return 0;
441 _error:
442 dprintk(1, "Error opening PCM!\n");
443 return err;
444 }
445
446 /*
447 * audio close callback
448 */
449 static int snd_cx88_close(struct snd_pcm_substream *substream)
450 {
451 return 0;
452 }
453
454 /*
455 * hw_params callback
456 */
457 static int snd_cx88_hw_params(struct snd_pcm_substream *substream,
458 struct snd_pcm_hw_params *hw_params)
459 {
460 struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream);
461
462 struct cx88_audio_buffer *buf;
463 int ret;
464
465 if (substream->runtime->dma_area) {
466 dsp_buffer_free(chip);
467 substream->runtime->dma_area = NULL;
468 }
469
470 chip->period_size = params_period_bytes(hw_params);
471 chip->num_periods = params_periods(hw_params);
472 chip->dma_size = chip->period_size * params_periods(hw_params);
473
474 WARN_ON(!chip->dma_size);
475 WARN_ON(chip->num_periods & (chip->num_periods - 1));
476
477 buf = kzalloc(sizeof(*buf), GFP_KERNEL);
478 if (!buf)
479 return -ENOMEM;
480
481 chip->buf = buf;
482 buf->bpl = chip->period_size;
483
484 ret = cx88_alsa_dma_init(chip,
485 (PAGE_ALIGN(chip->dma_size) >> PAGE_SHIFT));
486 if (ret < 0)
487 goto error;
488
489 ret = cx88_alsa_dma_map(chip);
490 if (ret < 0)
491 goto error;
492
493 ret = cx88_risc_databuffer(chip->pci, &buf->risc, buf->sglist,
494 chip->period_size, chip->num_periods, 1);
495 if (ret < 0)
496 goto error;
497
498 /* Loop back to start of program */
499 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
500 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
501
502 substream->runtime->dma_area = chip->buf->vaddr;
503 substream->runtime->dma_bytes = chip->dma_size;
504 substream->runtime->dma_addr = 0;
505 return 0;
506
507 error:
508 kfree(buf);
509 return ret;
510 }
511
512 /*
513 * hw free callback
514 */
515 static int snd_cx88_hw_free(struct snd_pcm_substream *substream)
516 {
517 struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream);
518
519 if (substream->runtime->dma_area) {
520 dsp_buffer_free(chip);
521 substream->runtime->dma_area = NULL;
522 }
523
524 return 0;
525 }
526
527 /*
528 * prepare callback
529 */
530 static int snd_cx88_prepare(struct snd_pcm_substream *substream)
531 {
532 return 0;
533 }
534
535 /*
536 * trigger callback
537 */
538 static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
539 {
540 struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream);
541 int err;
542
543 /* Local interrupts are already disabled by ALSA */
544 spin_lock(&chip->reg_lock);
545
546 switch (cmd) {
547 case SNDRV_PCM_TRIGGER_START:
548 err = _cx88_start_audio_dma(chip);
549 break;
550 case SNDRV_PCM_TRIGGER_STOP:
551 err = _cx88_stop_audio_dma(chip);
552 break;
553 default:
554 err = -EINVAL;
555 break;
556 }
557
558 spin_unlock(&chip->reg_lock);
559
560 return err;
561 }
562
563 /*
564 * pointer callback
565 */
566 static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
567 {
568 struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream);
569 struct snd_pcm_runtime *runtime = substream->runtime;
570 u16 count;
571
572 count = atomic_read(&chip->count);
573
574 // dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __func__,
575 // count, new, count & (runtime->periods-1),
576 // runtime->period_size * (count & (runtime->periods-1)));
577 return runtime->period_size * (count & (runtime->periods - 1));
578 }
579
580 /*
581 * page callback (needed for mmap)
582 */
583 static struct page *snd_cx88_page(struct snd_pcm_substream *substream,
584 unsigned long offset)
585 {
586 void *pageptr = substream->runtime->dma_area + offset;
587
588 return vmalloc_to_page(pageptr);
589 }
590
591 /*
592 * operators
593 */
594 static const struct snd_pcm_ops snd_cx88_pcm_ops = {
595 .open = snd_cx88_pcm_open,
596 .close = snd_cx88_close,
597 .ioctl = snd_pcm_lib_ioctl,
598 .hw_params = snd_cx88_hw_params,
599 .hw_free = snd_cx88_hw_free,
600 .prepare = snd_cx88_prepare,
601 .trigger = snd_cx88_card_trigger,
602 .pointer = snd_cx88_pointer,
603 .page = snd_cx88_page,
604 };
605
606 /*
607 * create a PCM device
608 */
609 static int snd_cx88_pcm(struct cx88_audio_dev *chip, int device,
610 const char *name)
611 {
612 int err;
613 struct snd_pcm *pcm;
614
615 err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
616 if (err < 0)
617 return err;
618 pcm->private_data = chip;
619 strcpy(pcm->name, name);
620 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
621
622 return 0;
623 }
624
625 /*
626 * CONTROL INTERFACE
627 */
628 static int snd_cx88_volume_info(struct snd_kcontrol *kcontrol,
629 struct snd_ctl_elem_info *info)
630 {
631 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
632 info->count = 2;
633 info->value.integer.min = 0;
634 info->value.integer.max = 0x3f;
635
636 return 0;
637 }
638
639 static int snd_cx88_volume_get(struct snd_kcontrol *kcontrol,
640 struct snd_ctl_elem_value *value)
641 {
642 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol);
643 struct cx88_core *core = chip->core;
644 int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f),
645 bal = cx_read(AUD_BAL_CTL);
646
647 value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol;
648 vol -= (bal & 0x3f);
649 value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol;
650
651 return 0;
652 }
653
654 static void snd_cx88_wm8775_volume_put(struct snd_kcontrol *kcontrol,
655 struct snd_ctl_elem_value *value)
656 {
657 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol);
658 struct cx88_core *core = chip->core;
659 u16 left = value->value.integer.value[0];
660 u16 right = value->value.integer.value[1];
661 int v, b;
662
663 /* Pass volume & balance onto any WM8775 */
664 if (left >= right) {
665 v = left << 10;
666 b = left ? (0x8000 * right) / left : 0x8000;
667 } else {
668 v = right << 10;
669 b = right ? 0xffff - (0x8000 * left) / right : 0x8000;
670 }
671 wm8775_s_ctrl(core, V4L2_CID_AUDIO_VOLUME, v);
672 wm8775_s_ctrl(core, V4L2_CID_AUDIO_BALANCE, b);
673 }
674
675 /* OK - TODO: test it */
676 static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol,
677 struct snd_ctl_elem_value *value)
678 {
679 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol);
680 struct cx88_core *core = chip->core;
681 int left, right, v, b;
682 int changed = 0;
683 u32 old;
684
685 if (core->sd_wm8775)
686 snd_cx88_wm8775_volume_put(kcontrol, value);
687
688 left = value->value.integer.value[0] & 0x3f;
689 right = value->value.integer.value[1] & 0x3f;
690 b = right - left;
691 if (b < 0) {
692 v = 0x3f - left;
693 b = (-b) | 0x40;
694 } else {
695 v = 0x3f - right;
696 }
697 /* Do we really know this will always be called with IRQs on? */
698 spin_lock_irq(&chip->reg_lock);
699 old = cx_read(AUD_VOL_CTL);
700 if (v != (old & 0x3f)) {
701 cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, (old & ~0x3f) | v);
702 changed = 1;
703 }
704 if ((cx_read(AUD_BAL_CTL) & 0x7f) != b) {
705 cx_write(AUD_BAL_CTL, b);
706 changed = 1;
707 }
708 spin_unlock_irq(&chip->reg_lock);
709
710 return changed;
711 }
712
713 static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0);
714
715 static const struct snd_kcontrol_new snd_cx88_volume = {
716 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
717 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
718 SNDRV_CTL_ELEM_ACCESS_TLV_READ,
719 .name = "Analog-TV Volume",
720 .info = snd_cx88_volume_info,
721 .get = snd_cx88_volume_get,
722 .put = snd_cx88_volume_put,
723 .tlv.p = snd_cx88_db_scale,
724 };
725
726 static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol,
727 struct snd_ctl_elem_value *value)
728 {
729 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol);
730 struct cx88_core *core = chip->core;
731 u32 bit = kcontrol->private_value;
732
733 value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit);
734 return 0;
735 }
736
737 static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol,
738 struct snd_ctl_elem_value *value)
739 {
740 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol);
741 struct cx88_core *core = chip->core;
742 u32 bit = kcontrol->private_value;
743 int ret = 0;
744 u32 vol;
745
746 spin_lock_irq(&chip->reg_lock);
747 vol = cx_read(AUD_VOL_CTL);
748 if (value->value.integer.value[0] != !(vol & bit)) {
749 vol ^= bit;
750 cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, vol);
751 /* Pass mute onto any WM8775 */
752 if (core->sd_wm8775 && ((1 << 6) == bit))
753 wm8775_s_ctrl(core,
754 V4L2_CID_AUDIO_MUTE, 0 != (vol & bit));
755 ret = 1;
756 }
757 spin_unlock_irq(&chip->reg_lock);
758 return ret;
759 }
760
761 static const struct snd_kcontrol_new snd_cx88_dac_switch = {
762 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
763 .name = "Audio-Out Switch",
764 .info = snd_ctl_boolean_mono_info,
765 .get = snd_cx88_switch_get,
766 .put = snd_cx88_switch_put,
767 .private_value = (1 << 8),
768 };
769
770 static const struct snd_kcontrol_new snd_cx88_source_switch = {
771 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
772 .name = "Analog-TV Switch",
773 .info = snd_ctl_boolean_mono_info,
774 .get = snd_cx88_switch_get,
775 .put = snd_cx88_switch_put,
776 .private_value = (1 << 6),
777 };
778
779 static int snd_cx88_alc_get(struct snd_kcontrol *kcontrol,
780 struct snd_ctl_elem_value *value)
781 {
782 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol);
783 struct cx88_core *core = chip->core;
784 s32 val;
785
786 val = wm8775_g_ctrl(core, V4L2_CID_AUDIO_LOUDNESS);
787 value->value.integer.value[0] = val ? 1 : 0;
788 return 0;
789 }
790
791 static int snd_cx88_alc_put(struct snd_kcontrol *kcontrol,
792 struct snd_ctl_elem_value *value)
793 {
794 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol);
795 struct cx88_core *core = chip->core;
796
797 wm8775_s_ctrl(core, V4L2_CID_AUDIO_LOUDNESS,
798 value->value.integer.value[0] != 0);
799 return 0;
800 }
801
802 static const struct snd_kcontrol_new snd_cx88_alc_switch = {
803 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
804 .name = "Line-In ALC Switch",
805 .info = snd_ctl_boolean_mono_info,
806 .get = snd_cx88_alc_get,
807 .put = snd_cx88_alc_put,
808 };
809
810 /*
811 * Basic Flow for Sound Devices
812 */
813
814 /*
815 * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
816 * Only boards with eeprom and byte 1 at eeprom=1 have it
817 */
818
819 static const struct pci_device_id cx88_audio_pci_tbl[] = {
820 {0x14f1, 0x8801, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
821 {0x14f1, 0x8811, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
822 {0, }
823 };
824 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
825
826 /*
827 * Chip-specific destructor
828 */
829
830 static int snd_cx88_free(struct cx88_audio_dev *chip)
831 {
832 if (chip->irq >= 0)
833 free_irq(chip->irq, chip);
834
835 cx88_core_put(chip->core, chip->pci);
836
837 pci_disable_device(chip->pci);
838 return 0;
839 }
840
841 /*
842 * Component Destructor
843 */
844 static void snd_cx88_dev_free(struct snd_card *card)
845 {
846 struct cx88_audio_dev *chip = card->private_data;
847
848 snd_cx88_free(chip);
849 }
850
851 /*
852 * Alsa Constructor - Component probe
853 */
854
855 static int devno;
856 static int snd_cx88_create(struct snd_card *card, struct pci_dev *pci,
857 struct cx88_audio_dev **rchip,
858 struct cx88_core **core_ptr)
859 {
860 struct cx88_audio_dev *chip;
861 struct cx88_core *core;
862 int err;
863 unsigned char pci_lat;
864
865 *rchip = NULL;
866
867 err = pci_enable_device(pci);
868 if (err < 0)
869 return err;
870
871 pci_set_master(pci);
872
873 chip = card->private_data;
874
875 core = cx88_core_get(pci);
876 if (!core) {
877 err = -EINVAL;
878 return err;
879 }
880
881 err = pci_set_dma_mask(pci, DMA_BIT_MASK(32));
882 if (err) {
883 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n", core->name);
884 cx88_core_put(core, pci);
885 return err;
886 }
887
888 /* pci init */
889 chip->card = card;
890 chip->pci = pci;
891 chip->irq = -1;
892 spin_lock_init(&chip->reg_lock);
893
894 chip->core = core;
895
896 /* get irq */
897 err = request_irq(chip->pci->irq, cx8801_irq,
898 IRQF_SHARED, chip->core->name, chip);
899 if (err < 0) {
900 dprintk(0, "%s: can't get IRQ %d\n",
901 chip->core->name, chip->pci->irq);
902 return err;
903 }
904
905 /* print pci info */
906 pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
907
908 dprintk(1,
909 "ALSA %s/%i: found at %s, rev: %d, irq: %d, latency: %d, mmio: 0x%llx\n",
910 core->name, devno,
911 pci_name(pci), pci->revision, pci->irq,
912 pci_lat, (unsigned long long)pci_resource_start(pci, 0));
913
914 chip->irq = pci->irq;
915 synchronize_irq(chip->irq);
916
917 *rchip = chip;
918 *core_ptr = core;
919
920 return 0;
921 }
922
923 static int cx88_audio_initdev(struct pci_dev *pci,
924 const struct pci_device_id *pci_id)
925 {
926 struct snd_card *card;
927 struct cx88_audio_dev *chip;
928 struct cx88_core *core = NULL;
929 int err;
930
931 if (devno >= SNDRV_CARDS)
932 return (-ENODEV);
933
934 if (!enable[devno]) {
935 ++devno;
936 return (-ENOENT);
937 }
938
939 err = snd_card_new(&pci->dev, index[devno], id[devno], THIS_MODULE,
940 sizeof(struct cx88_audio_dev), &card);
941 if (err < 0)
942 return err;
943
944 card->private_free = snd_cx88_dev_free;
945
946 err = snd_cx88_create(card, pci, &chip, &core);
947 if (err < 0)
948 goto error;
949
950 err = snd_cx88_pcm(chip, 0, "CX88 Digital");
951 if (err < 0)
952 goto error;
953
954 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip));
955 if (err < 0)
956 goto error;
957 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip));
958 if (err < 0)
959 goto error;
960 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip));
961 if (err < 0)
962 goto error;
963
964 /* If there's a wm8775 then add a Line-In ALC switch */
965 if (core->sd_wm8775) {
966 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_alc_switch, chip));
967 if (err < 0)
968 goto error;
969 }
970
971 strcpy(card->driver, "CX88x");
972 sprintf(card->shortname, "Conexant CX%x", pci->device);
973 sprintf(card->longname, "%s at %#llx",
974 card->shortname,
975 (unsigned long long)pci_resource_start(pci, 0));
976 strcpy(card->mixername, "CX88");
977
978 dprintk(0, "%s/%i: ALSA support for cx2388x boards\n",
979 card->driver, devno);
980
981 err = snd_card_register(card);
982 if (err < 0)
983 goto error;
984 pci_set_drvdata(pci, card);
985
986 devno++;
987 return 0;
988
989 error:
990 snd_card_free(card);
991 return err;
992 }
993
994 /*
995 * ALSA destructor
996 */
997 static void cx88_audio_finidev(struct pci_dev *pci)
998 {
999 struct snd_card *card = pci_get_drvdata(pci);
1000
1001 snd_card_free(card);
1002
1003 devno--;
1004 }
1005
1006 /*
1007 * PCI driver definition
1008 */
1009
1010 static struct pci_driver cx88_audio_pci_driver = {
1011 .name = "cx88_audio",
1012 .id_table = cx88_audio_pci_tbl,
1013 .probe = cx88_audio_initdev,
1014 .remove = cx88_audio_finidev,
1015 };
1016
1017 module_pci_driver(cx88_audio_pci_driver);
Linux with added FPC-III support