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1/*
2 *
3 * Support for audio capture
4 * PCI function #1 of the cx2388x.
5 *
6 * (c) 2007 Trent Piepho <xyzzy@speakeasy.org>
7 * (c) 2005,2006 Ricardo Cerqueira <v4l@cerqueira.org>
8 * (c) 2005 Mauro Carvalho Chehab <mchehab@infradead.org>
9 * Based on a dummy cx88 module by Gerd Knorr <kraxel@bytesex.org>
10 * Based on dummy.c by Jaroslav Kysela <perex@perex.cz>
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 */
26
27#include <linux/module.h>
28#include <linux/init.h>
29#include <linux/device.h>
30#include <linux/interrupt.h>
31#include <linux/vmalloc.h>
32#include <linux/dma-mapping.h>
33#include <linux/pci.h>
34#include <linux/slab.h>
35
36#include <asm/delay.h>
37#include <sound/core.h>
38#include <sound/pcm.h>
39#include <sound/pcm_params.h>
40#include <sound/control.h>
41#include <sound/initval.h>
42#include <sound/tlv.h>
43#include <media/wm8775.h>
44
45#include "cx88.h"
46#include "cx88-reg.h"
47
48#define dprintk(level,fmt, arg...) if (debug >= level) \
49 printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg)
50
51#define dprintk_core(level,fmt, arg...) if (debug >= level) \
52 printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg)
53
54/****************************************************************************
55 Data type declarations - Can be moded to a header file later
56 ****************************************************************************/
57
58struct cx88_audio_buffer {
59 unsigned int bpl;
60 struct btcx_riscmem risc;
61 struct videobuf_dmabuf dma;
62};
63
64struct cx88_audio_dev {
65 struct cx88_core *core;
66 struct cx88_dmaqueue q;
67
68 /* pci i/o */
69 struct pci_dev *pci;
70
71 /* audio controls */
72 int irq;
73
74 struct snd_card *card;
75
76 spinlock_t reg_lock;
77 atomic_t count;
78
79 unsigned int dma_size;
80 unsigned int period_size;
81 unsigned int num_periods;
82
83 struct videobuf_dmabuf *dma_risc;
84
85 struct cx88_audio_buffer *buf;
86
87 struct snd_pcm_substream *substream;
88};
89typedef struct cx88_audio_dev snd_cx88_card_t;
90
91
92
93/****************************************************************************
94 Module global static vars
95 ****************************************************************************/
96
97static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
98static const char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
99static bool enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
100
101module_param_array(enable, bool, NULL, 0444);
102MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
103
104module_param_array(index, int, NULL, 0444);
105MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
106
107
108/****************************************************************************
109 Module macros
110 ****************************************************************************/
111
112MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
113MODULE_AUTHOR("Ricardo Cerqueira");
114MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
115MODULE_LICENSE("GPL");
116MODULE_VERSION(CX88_VERSION);
117
118MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
119 "{{Conexant,23882},"
120 "{{Conexant,23883}");
121static unsigned int debug;
122module_param(debug,int,0644);
123MODULE_PARM_DESC(debug,"enable debug messages");
124
125/****************************************************************************
126 Module specific funtions
127 ****************************************************************************/
128
129/*
130 * BOARD Specific: Sets audio DMA
131 */
132
133static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
134{
135 struct cx88_audio_buffer *buf = chip->buf;
136 struct cx88_core *core=chip->core;
137 const struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
138
139 /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
140 cx_clear(MO_AUD_DMACNTRL, 0x11);
141
142 /* setup fifo + format - out channel */
143 cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma);
144
145 /* sets bpl size */
146 cx_write(MO_AUDD_LNGTH, buf->bpl);
147
148 /* reset counter */
149 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
150 atomic_set(&chip->count, 0);
151
152 dprintk(1, "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d "
153 "byte buffer\n", buf->bpl, cx_read(audio_ch->cmds_start + 8)>>1,
154 chip->num_periods, buf->bpl * chip->num_periods);
155
156 /* Enables corresponding bits at AUD_INT_STAT */
157 cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
158 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
159
160 /* Clean any pending interrupt bits already set */
161 cx_write(MO_AUD_INTSTAT, ~0);
162
163 /* enable audio irqs */
164 cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
165
166 /* start dma */
167 cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
168 cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
169
170 if (debug)
171 cx88_sram_channel_dump(chip->core, audio_ch);
172
173 return 0;
174}
175
176/*
177 * BOARD Specific: Resets audio DMA
178 */
179static int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
180{
181 struct cx88_core *core=chip->core;
182 dprintk(1, "Stopping audio DMA\n");
183
184 /* stop dma */
185 cx_clear(MO_AUD_DMACNTRL, 0x11);
186
187 /* disable irqs */
188 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
189 cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
190 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
191
192 if (debug)
193 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
194
195 return 0;
196}
197
198#define MAX_IRQ_LOOP 50
199
200/*
201 * BOARD Specific: IRQ dma bits
202 */
203static const char *cx88_aud_irqs[32] = {
204 "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
205 NULL, /* reserved */
206 "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
207 NULL, /* reserved */
208 "dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */
209 NULL, /* reserved */
210 "dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */
211 NULL, /* reserved */
212 "opc_err", "par_err", "rip_err", /* 16-18 */
213 "pci_abort", "ber_irq", "mchg_irq" /* 19-21 */
214};
215
216/*
217 * BOARD Specific: Threats IRQ audio specific calls
218 */
219static void cx8801_aud_irq(snd_cx88_card_t *chip)
220{
221 struct cx88_core *core = chip->core;
222 u32 status, mask;
223
224 status = cx_read(MO_AUD_INTSTAT);
225 mask = cx_read(MO_AUD_INTMSK);
226 if (0 == (status & mask))
227 return;
228 cx_write(MO_AUD_INTSTAT, status);
229 if (debug > 1 || (status & mask & ~0xff))
230 cx88_print_irqbits(core->name, "irq aud",
231 cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
232 status, mask);
233 /* risc op code error */
234 if (status & AUD_INT_OPC_ERR) {
235 printk(KERN_WARNING "%s/1: Audio risc op code error\n",core->name);
236 cx_clear(MO_AUD_DMACNTRL, 0x11);
237 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
238 }
239 if (status & AUD_INT_DN_SYNC) {
240 dprintk(1, "Downstream sync error\n");
241 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
242 return;
243 }
244 /* risc1 downstream */
245 if (status & AUD_INT_DN_RISCI1) {
246 atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT));
247 snd_pcm_period_elapsed(chip->substream);
248 }
249 /* FIXME: Any other status should deserve a special handling? */
250}
251
252/*
253 * BOARD Specific: Handles IRQ calls
254 */
255static irqreturn_t cx8801_irq(int irq, void *dev_id)
256{
257 snd_cx88_card_t *chip = dev_id;
258 struct cx88_core *core = chip->core;
259 u32 status;
260 int loop, handled = 0;
261
262 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
263 status = cx_read(MO_PCI_INTSTAT) &
264 (core->pci_irqmask | PCI_INT_AUDINT);
265 if (0 == status)
266 goto out;
267 dprintk(3, "cx8801_irq loop %d/%d, status %x\n",
268 loop, MAX_IRQ_LOOP, status);
269 handled = 1;
270 cx_write(MO_PCI_INTSTAT, status);
271
272 if (status & core->pci_irqmask)
273 cx88_core_irq(core, status);
274 if (status & PCI_INT_AUDINT)
275 cx8801_aud_irq(chip);
276 }
277
278 if (MAX_IRQ_LOOP == loop) {
279 printk(KERN_ERR
280 "%s/1: IRQ loop detected, disabling interrupts\n",
281 core->name);
282 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
283 }
284
285 out:
286 return IRQ_RETVAL(handled);
287}
288
289
290static int dsp_buffer_free(snd_cx88_card_t *chip)
291{
292 BUG_ON(!chip->dma_size);
293
294 dprintk(2,"Freeing buffer\n");
295 videobuf_dma_unmap(&chip->pci->dev, chip->dma_risc);
296 videobuf_dma_free(chip->dma_risc);
297 btcx_riscmem_free(chip->pci,&chip->buf->risc);
298 kfree(chip->buf);
299
300 chip->dma_risc = NULL;
301 chip->dma_size = 0;
302
303 return 0;
304}
305
306/****************************************************************************
307 ALSA PCM Interface
308 ****************************************************************************/
309
310/*
311 * Digital hardware definition
312 */
313#define DEFAULT_FIFO_SIZE 4096
314static const struct snd_pcm_hardware snd_cx88_digital_hw = {
315 .info = SNDRV_PCM_INFO_MMAP |
316 SNDRV_PCM_INFO_INTERLEAVED |
317 SNDRV_PCM_INFO_BLOCK_TRANSFER |
318 SNDRV_PCM_INFO_MMAP_VALID,
319 .formats = SNDRV_PCM_FMTBIT_S16_LE,
320
321 .rates = SNDRV_PCM_RATE_48000,
322 .rate_min = 48000,
323 .rate_max = 48000,
324 .channels_min = 2,
325 .channels_max = 2,
326 /* Analog audio output will be full of clicks and pops if there
327 are not exactly four lines in the SRAM FIFO buffer. */
328 .period_bytes_min = DEFAULT_FIFO_SIZE/4,
329 .period_bytes_max = DEFAULT_FIFO_SIZE/4,
330 .periods_min = 1,
331 .periods_max = 1024,
332 .buffer_bytes_max = (1024*1024),
333};
334
335/*
336 * audio pcm capture open callback
337 */
338static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
339{
340 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
341 struct snd_pcm_runtime *runtime = substream->runtime;
342 int err;
343
344 if (!chip) {
345 printk(KERN_ERR "BUG: cx88 can't find device struct."
346 " Can't proceed with open\n");
347 return -ENODEV;
348 }
349
350 err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS);
351 if (err < 0)
352 goto _error;
353
354 chip->substream = substream;
355
356 runtime->hw = snd_cx88_digital_hw;
357
358 if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
359 unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
360 bpl &= ~7; /* must be multiple of 8 */
361 runtime->hw.period_bytes_min = bpl;
362 runtime->hw.period_bytes_max = bpl;
363 }
364
365 return 0;
366_error:
367 dprintk(1,"Error opening PCM!\n");
368 return err;
369}
370
371/*
372 * audio close callback
373 */
374static int snd_cx88_close(struct snd_pcm_substream *substream)
375{
376 return 0;
377}
378
379/*
380 * hw_params callback
381 */
382static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
383 struct snd_pcm_hw_params * hw_params)
384{
385 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
386 struct videobuf_dmabuf *dma;
387
388 struct cx88_audio_buffer *buf;
389 int ret;
390
391 if (substream->runtime->dma_area) {
392 dsp_buffer_free(chip);
393 substream->runtime->dma_area = NULL;
394 }
395
396 chip->period_size = params_period_bytes(hw_params);
397 chip->num_periods = params_periods(hw_params);
398 chip->dma_size = chip->period_size * params_periods(hw_params);
399
400 BUG_ON(!chip->dma_size);
401 BUG_ON(chip->num_periods & (chip->num_periods-1));
402
403 buf = kzalloc(sizeof(*buf), GFP_KERNEL);
404 if (NULL == buf)
405 return -ENOMEM;
406
407 buf->bpl = chip->period_size;
408
409 dma = &buf->dma;
410 videobuf_dma_init(dma);
411 ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE,
412 (PAGE_ALIGN(chip->dma_size) >> PAGE_SHIFT));
413 if (ret < 0)
414 goto error;
415
416 ret = videobuf_dma_map(&chip->pci->dev, dma);
417 if (ret < 0)
418 goto error;
419
420 ret = cx88_risc_databuffer(chip->pci, &buf->risc, dma->sglist,
421 chip->period_size, chip->num_periods, 1);
422 if (ret < 0)
423 goto error;
424
425 /* Loop back to start of program */
426 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);
427 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
428
429 chip->buf = buf;
430 chip->dma_risc = dma;
431
432 substream->runtime->dma_area = chip->dma_risc->vaddr;
433 substream->runtime->dma_bytes = chip->dma_size;
434 substream->runtime->dma_addr = 0;
435 return 0;
436
437error:
438 kfree(buf);
439 return ret;
440}
441
442/*
443 * hw free callback
444 */
445static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
446{
447
448 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
449
450 if (substream->runtime->dma_area) {
451 dsp_buffer_free(chip);
452 substream->runtime->dma_area = NULL;
453 }
454
455 return 0;
456}
457
458/*
459 * prepare callback
460 */
461static int snd_cx88_prepare(struct snd_pcm_substream *substream)
462{
463 return 0;
464}
465
466/*
467 * trigger callback
468 */
469static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
470{
471 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
472 int err;
473
474 /* Local interrupts are already disabled by ALSA */
475 spin_lock(&chip->reg_lock);
476
477 switch (cmd) {
478 case SNDRV_PCM_TRIGGER_START:
479 err=_cx88_start_audio_dma(chip);
480 break;
481 case SNDRV_PCM_TRIGGER_STOP:
482 err=_cx88_stop_audio_dma(chip);
483 break;
484 default:
485 err=-EINVAL;
486 break;
487 }
488
489 spin_unlock(&chip->reg_lock);
490
491 return err;
492}
493
494/*
495 * pointer callback
496 */
497static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
498{
499 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
500 struct snd_pcm_runtime *runtime = substream->runtime;
501 u16 count;
502
503 count = atomic_read(&chip->count);
504
505// dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __func__,
506// count, new, count & (runtime->periods-1),
507// runtime->period_size * (count & (runtime->periods-1)));
508 return runtime->period_size * (count & (runtime->periods-1));
509}
510
511/*
512 * page callback (needed for mmap)
513 */
514static struct page *snd_cx88_page(struct snd_pcm_substream *substream,
515 unsigned long offset)
516{
517 void *pageptr = substream->runtime->dma_area + offset;
518 return vmalloc_to_page(pageptr);
519}
520
521/*
522 * operators
523 */
524static struct snd_pcm_ops snd_cx88_pcm_ops = {
525 .open = snd_cx88_pcm_open,
526 .close = snd_cx88_close,
527 .ioctl = snd_pcm_lib_ioctl,
528 .hw_params = snd_cx88_hw_params,
529 .hw_free = snd_cx88_hw_free,
530 .prepare = snd_cx88_prepare,
531 .trigger = snd_cx88_card_trigger,
532 .pointer = snd_cx88_pointer,
533 .page = snd_cx88_page,
534};
535
536/*
537 * create a PCM device
538 */
539static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, const char *name)
540{
541 int err;
542 struct snd_pcm *pcm;
543
544 err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
545 if (err < 0)
546 return err;
547 pcm->private_data = chip;
548 strcpy(pcm->name, name);
549 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
550
551 return 0;
552}
553
554/****************************************************************************
555 CONTROL INTERFACE
556 ****************************************************************************/
557static int snd_cx88_volume_info(struct snd_kcontrol *kcontrol,
558 struct snd_ctl_elem_info *info)
559{
560 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
561 info->count = 2;
562 info->value.integer.min = 0;
563 info->value.integer.max = 0x3f;
564
565 return 0;
566}
567
568static int snd_cx88_volume_get(struct snd_kcontrol *kcontrol,
569 struct snd_ctl_elem_value *value)
570{
571 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
572 struct cx88_core *core=chip->core;
573 int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f),
574 bal = cx_read(AUD_BAL_CTL);
575
576 value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol;
577 vol -= (bal & 0x3f);
578 value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol;
579
580 return 0;
581}
582
583static void snd_cx88_wm8775_volume_put(struct snd_kcontrol *kcontrol,
584 struct snd_ctl_elem_value *value)
585{
586 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
587 struct cx88_core *core = chip->core;
588 struct v4l2_control client_ctl;
589 int left = value->value.integer.value[0];
590 int right = value->value.integer.value[1];
591 int v, b;
592
593 memset(&client_ctl, 0, sizeof(client_ctl));
594
595 /* Pass volume & balance onto any WM8775 */
596 if (left >= right) {
597 v = left << 10;
598 b = left ? (0x8000 * right) / left : 0x8000;
599 } else {
600 v = right << 10;
601 b = right ? 0xffff - (0x8000 * left) / right : 0x8000;
602 }
603 client_ctl.value = v;
604 client_ctl.id = V4L2_CID_AUDIO_VOLUME;
605 call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
606
607 client_ctl.value = b;
608 client_ctl.id = V4L2_CID_AUDIO_BALANCE;
609 call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
610}
611
612/* OK - TODO: test it */
613static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol,
614 struct snd_ctl_elem_value *value)
615{
616 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
617 struct cx88_core *core=chip->core;
618 int left, right, v, b;
619 int changed = 0;
620 u32 old;
621
622 if (core->board.audio_chip == V4L2_IDENT_WM8775)
623 snd_cx88_wm8775_volume_put(kcontrol, value);
624
625 left = value->value.integer.value[0] & 0x3f;
626 right = value->value.integer.value[1] & 0x3f;
627 b = right - left;
628 if (b < 0) {
629 v = 0x3f - left;
630 b = (-b) | 0x40;
631 } else {
632 v = 0x3f - right;
633 }
634 /* Do we really know this will always be called with IRQs on? */
635 spin_lock_irq(&chip->reg_lock);
636 old = cx_read(AUD_VOL_CTL);
637 if (v != (old & 0x3f)) {
638 cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, (old & ~0x3f) | v);
639 changed = 1;
640 }
641 if ((cx_read(AUD_BAL_CTL) & 0x7f) != b) {
642 cx_write(AUD_BAL_CTL, b);
643 changed = 1;
644 }
645 spin_unlock_irq(&chip->reg_lock);
646
647 return changed;
648}
649
650static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0);
651
652static const struct snd_kcontrol_new snd_cx88_volume = {
653 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
654 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
655 SNDRV_CTL_ELEM_ACCESS_TLV_READ,
656 .name = "Analog-TV Volume",
657 .info = snd_cx88_volume_info,
658 .get = snd_cx88_volume_get,
659 .put = snd_cx88_volume_put,
660 .tlv.p = snd_cx88_db_scale,
661};
662
663static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol,
664 struct snd_ctl_elem_value *value)
665{
666 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
667 struct cx88_core *core = chip->core;
668 u32 bit = kcontrol->private_value;
669
670 value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit);
671 return 0;
672}
673
674static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol,
675 struct snd_ctl_elem_value *value)
676{
677 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
678 struct cx88_core *core = chip->core;
679 u32 bit = kcontrol->private_value;
680 int ret = 0;
681 u32 vol;
682
683 spin_lock_irq(&chip->reg_lock);
684 vol = cx_read(AUD_VOL_CTL);
685 if (value->value.integer.value[0] != !(vol & bit)) {
686 vol ^= bit;
687 cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, vol);
688 /* Pass mute onto any WM8775 */
689 if ((core->board.audio_chip == V4L2_IDENT_WM8775) &&
690 ((1<<6) == bit)) {
691 struct v4l2_control client_ctl;
692
693 memset(&client_ctl, 0, sizeof(client_ctl));
694 client_ctl.value = 0 != (vol & bit);
695 client_ctl.id = V4L2_CID_AUDIO_MUTE;
696 call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
697 }
698 ret = 1;
699 }
700 spin_unlock_irq(&chip->reg_lock);
701 return ret;
702}
703
704static const struct snd_kcontrol_new snd_cx88_dac_switch = {
705 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
706 .name = "Audio-Out Switch",
707 .info = snd_ctl_boolean_mono_info,
708 .get = snd_cx88_switch_get,
709 .put = snd_cx88_switch_put,
710 .private_value = (1<<8),
711};
712
713static const struct snd_kcontrol_new snd_cx88_source_switch = {
714 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
715 .name = "Analog-TV Switch",
716 .info = snd_ctl_boolean_mono_info,
717 .get = snd_cx88_switch_get,
718 .put = snd_cx88_switch_put,
719 .private_value = (1<<6),
720};
721
722static int snd_cx88_alc_get(struct snd_kcontrol *kcontrol,
723 struct snd_ctl_elem_value *value)
724{
725 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
726 struct cx88_core *core = chip->core;
727 struct v4l2_control client_ctl;
728
729 memset(&client_ctl, 0, sizeof(client_ctl));
730 client_ctl.id = V4L2_CID_AUDIO_LOUDNESS;
731 call_hw(core, WM8775_GID, core, g_ctrl, &client_ctl);
732 value->value.integer.value[0] = client_ctl.value ? 1 : 0;
733
734 return 0;
735}
736
737static int snd_cx88_alc_put(struct snd_kcontrol *kcontrol,
738 struct snd_ctl_elem_value *value)
739{
740 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
741 struct cx88_core *core = chip->core;
742 struct v4l2_control client_ctl;
743
744 memset(&client_ctl, 0, sizeof(client_ctl));
745 client_ctl.value = 0 != value->value.integer.value[0];
746 client_ctl.id = V4L2_CID_AUDIO_LOUDNESS;
747 call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
748
749 return 0;
750}
751
752static struct snd_kcontrol_new snd_cx88_alc_switch = {
753 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
754 .name = "Line-In ALC Switch",
755 .info = snd_ctl_boolean_mono_info,
756 .get = snd_cx88_alc_get,
757 .put = snd_cx88_alc_put,
758};
759
760/****************************************************************************
761 Basic Flow for Sound Devices
762 ****************************************************************************/
763
764/*
765 * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
766 * Only boards with eeprom and byte 1 at eeprom=1 have it
767 */
768
769static const struct pci_device_id const cx88_audio_pci_tbl[] __devinitdata = {
770 {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
771 {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
772 {0, }
773};
774MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
775
776/*
777 * Chip-specific destructor
778 */
779
780static int snd_cx88_free(snd_cx88_card_t *chip)
781{
782
783 if (chip->irq >= 0)
784 free_irq(chip->irq, chip);
785
786 cx88_core_put(chip->core,chip->pci);
787
788 pci_disable_device(chip->pci);
789 return 0;
790}
791
792/*
793 * Component Destructor
794 */
795static void snd_cx88_dev_free(struct snd_card * card)
796{
797 snd_cx88_card_t *chip = card->private_data;
798
799 snd_cx88_free(chip);
800}
801
802
803/*
804 * Alsa Constructor - Component probe
805 */
806
807static int devno;
808static int __devinit snd_cx88_create(struct snd_card *card,
809 struct pci_dev *pci,
810 snd_cx88_card_t **rchip,
811 struct cx88_core **core_ptr)
812{
813 snd_cx88_card_t *chip;
814 struct cx88_core *core;
815 int err;
816 unsigned char pci_lat;
817
818 *rchip = NULL;
819
820 err = pci_enable_device(pci);
821 if (err < 0)
822 return err;
823
824 pci_set_master(pci);
825
826 chip = card->private_data;
827
828 core = cx88_core_get(pci);
829 if (NULL == core) {
830 err = -EINVAL;
831 return err;
832 }
833
834 if (!pci_dma_supported(pci,DMA_BIT_MASK(32))) {
835 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
836 err = -EIO;
837 cx88_core_put(core, pci);
838 return err;
839 }
840
841
842 /* pci init */
843 chip->card = card;
844 chip->pci = pci;
845 chip->irq = -1;
846 spin_lock_init(&chip->reg_lock);
847
848 chip->core = core;
849
850 /* get irq */
851 err = request_irq(chip->pci->irq, cx8801_irq,
852 IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip);
853 if (err < 0) {
854 dprintk(0, "%s: can't get IRQ %d\n",
855 chip->core->name, chip->pci->irq);
856 return err;
857 }
858
859 /* print pci info */
860 pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
861
862 dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
863 "latency: %d, mmio: 0x%llx\n", core->name, devno,
864 pci_name(pci), pci->revision, pci->irq,
865 pci_lat, (unsigned long long)pci_resource_start(pci,0));
866
867 chip->irq = pci->irq;
868 synchronize_irq(chip->irq);
869
870 snd_card_set_dev(card, &pci->dev);
871
872 *rchip = chip;
873 *core_ptr = core;
874
875 return 0;
876}
877
878static int __devinit cx88_audio_initdev(struct pci_dev *pci,
879 const struct pci_device_id *pci_id)
880{
881 struct snd_card *card;
882 snd_cx88_card_t *chip;
883 struct cx88_core *core = NULL;
884 int err;
885
886 if (devno >= SNDRV_CARDS)
887 return (-ENODEV);
888
889 if (!enable[devno]) {
890 ++devno;
891 return (-ENOENT);
892 }
893
894 err = snd_card_create(index[devno], id[devno], THIS_MODULE,
895 sizeof(snd_cx88_card_t), &card);
896 if (err < 0)
897 return err;
898
899 card->private_free = snd_cx88_dev_free;
900
901 err = snd_cx88_create(card, pci, &chip, &core);
902 if (err < 0)
903 goto error;
904
905 err = snd_cx88_pcm(chip, 0, "CX88 Digital");
906 if (err < 0)
907 goto error;
908
909 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip));
910 if (err < 0)
911 goto error;
912 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip));
913 if (err < 0)
914 goto error;
915 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip));
916 if (err < 0)
917 goto error;
918
919 /* If there's a wm8775 then add a Line-In ALC switch */
920 if (core->board.audio_chip == V4L2_IDENT_WM8775)
921 snd_ctl_add(card, snd_ctl_new1(&snd_cx88_alc_switch, chip));
922
923 strcpy (card->driver, "CX88x");
924 sprintf(card->shortname, "Conexant CX%x", pci->device);
925 sprintf(card->longname, "%s at %#llx",
926 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
927 strcpy (card->mixername, "CX88");
928
929 dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
930 card->driver,devno);
931
932 err = snd_card_register(card);
933 if (err < 0)
934 goto error;
935 pci_set_drvdata(pci,card);
936
937 devno++;
938 return 0;
939
940error:
941 snd_card_free(card);
942 return err;
943}
944/*
945 * ALSA destructor
946 */
947static void __devexit cx88_audio_finidev(struct pci_dev *pci)
948{
949 struct cx88_audio_dev *card = pci_get_drvdata(pci);
950
951 snd_card_free((void *)card);
952
953 pci_set_drvdata(pci, NULL);
954
955 devno--;
956}
957
958/*
959 * PCI driver definition
960 */
961
962static struct pci_driver cx88_audio_pci_driver = {
963 .name = "cx88_audio",
964 .id_table = cx88_audio_pci_tbl,
965 .probe = cx88_audio_initdev,
966 .remove = __devexit_p(cx88_audio_finidev),
967};
968
969/****************************************************************************
970 LINUX MODULE INIT
971 ****************************************************************************/
972
973/*
974 * module init
975 */
976static int __init cx88_audio_init(void)
977{
978 printk(KERN_INFO "cx2388x alsa driver version %s loaded\n",
979 CX88_VERSION);
980 return pci_register_driver(&cx88_audio_pci_driver);
981}
982
983/*
984 * module remove
985 */
986static void __exit cx88_audio_fini(void)
987{
988 pci_unregister_driver(&cx88_audio_pci_driver);
989}
990
991module_init(cx88_audio_init);
992module_exit(cx88_audio_fini);