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FRV: Use generic show_interrupts()
[cris-mirror.git] / drivers / media / video / cx88 / cx88-alsa.c
blob423c1af8a782473d21d6bb6eccfe97d3be9effb0
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
58 struct cx88_audio_buffer {
59 unsigned int bpl;
60 struct btcx_riscmem risc;
61 struct videobuf_dmabuf dma;
62 };
63
64 struct 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 };
89 typedef struct cx88_audio_dev snd_cx88_card_t;
90
91
92
93 /****************************************************************************
94 Module global static vars
95 ****************************************************************************/
96
97 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
98 static const char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
99 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
100
101 module_param_array(enable, bool, NULL, 0444);
102 MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
103
104 module_param_array(index, int, NULL, 0444);
105 MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
106
107
108 /****************************************************************************
109 Module macros
110 ****************************************************************************/
111
112 MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
113 MODULE_AUTHOR("Ricardo Cerqueira");
114 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
115 MODULE_LICENSE("GPL");
116 MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
117 "{{Conexant,23882},"
118 "{{Conexant,23883}");
119 static unsigned int debug;
120 module_param(debug,int,0644);
121 MODULE_PARM_DESC(debug,"enable debug messages");
122
123 /****************************************************************************
124 Module specific funtions
125 ****************************************************************************/
126
127 /*
128 * BOARD Specific: Sets audio DMA
129 */
130
131 static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
132 {
133 struct cx88_audio_buffer *buf = chip->buf;
134 struct cx88_core *core=chip->core;
135 const struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
136
137 /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
138 cx_clear(MO_AUD_DMACNTRL, 0x11);
139
140 /* setup fifo + format - out channel */
141 cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma);
142
143 /* sets bpl size */
144 cx_write(MO_AUDD_LNGTH, buf->bpl);
145
146 /* reset counter */
147 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
148 atomic_set(&chip->count, 0);
149
150 dprintk(1, "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d "
151 "byte buffer\n", buf->bpl, cx_read(audio_ch->cmds_start + 8)>>1,
152 chip->num_periods, buf->bpl * chip->num_periods);
153
154 /* Enables corresponding bits at AUD_INT_STAT */
155 cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
156 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
157
158 /* Clean any pending interrupt bits already set */
159 cx_write(MO_AUD_INTSTAT, ~0);
160
161 /* enable audio irqs */
162 cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
163
164 /* start dma */
165 cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
166 cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
167
168 if (debug)
169 cx88_sram_channel_dump(chip->core, audio_ch);
170
171 return 0;
172 }
173
174 /*
175 * BOARD Specific: Resets audio DMA
176 */
177 static int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
178 {
179 struct cx88_core *core=chip->core;
180 dprintk(1, "Stopping audio DMA\n");
181
182 /* stop dma */
183 cx_clear(MO_AUD_DMACNTRL, 0x11);
184
185 /* disable irqs */
186 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
187 cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
188 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
189
190 if (debug)
191 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
192
193 return 0;
194 }
195
196 #define MAX_IRQ_LOOP 50
197
198 /*
199 * BOARD Specific: IRQ dma bits
200 */
201 static const char *cx88_aud_irqs[32] = {
202 "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
203 NULL, /* reserved */
204 "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
205 NULL, /* reserved */
206 "dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */
207 NULL, /* reserved */
208 "dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */
209 NULL, /* reserved */
210 "opc_err", "par_err", "rip_err", /* 16-18 */
211 "pci_abort", "ber_irq", "mchg_irq" /* 19-21 */
212 };
213
214 /*
215 * BOARD Specific: Threats IRQ audio specific calls
216 */
217 static void cx8801_aud_irq(snd_cx88_card_t *chip)
218 {
219 struct cx88_core *core = chip->core;
220 u32 status, mask;
221
222 status = cx_read(MO_AUD_INTSTAT);
223 mask = cx_read(MO_AUD_INTMSK);
224 if (0 == (status & mask))
225 return;
226 cx_write(MO_AUD_INTSTAT, status);
227 if (debug > 1 || (status & mask & ~0xff))
228 cx88_print_irqbits(core->name, "irq aud",
229 cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
230 status, mask);
231 /* risc op code error */
232 if (status & AUD_INT_OPC_ERR) {
233 printk(KERN_WARNING "%s/1: Audio risc op code error\n",core->name);
234 cx_clear(MO_AUD_DMACNTRL, 0x11);
235 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
236 }
237 if (status & AUD_INT_DN_SYNC) {
238 dprintk(1, "Downstream sync error\n");
239 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
240 return;
241 }
242 /* risc1 downstream */
243 if (status & AUD_INT_DN_RISCI1) {
244 atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT));
245 snd_pcm_period_elapsed(chip->substream);
246 }
247 /* FIXME: Any other status should deserve a special handling? */
248 }
249
250 /*
251 * BOARD Specific: Handles IRQ calls
252 */
253 static irqreturn_t cx8801_irq(int irq, void *dev_id)
254 {
255 snd_cx88_card_t *chip = dev_id;
256 struct cx88_core *core = chip->core;
257 u32 status;
258 int loop, handled = 0;
259
260 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
261 status = cx_read(MO_PCI_INTSTAT) &
262 (core->pci_irqmask | PCI_INT_AUDINT);
263 if (0 == status)
264 goto out;
265 dprintk(3, "cx8801_irq loop %d/%d, status %x\n",
266 loop, MAX_IRQ_LOOP, status);
267 handled = 1;
268 cx_write(MO_PCI_INTSTAT, status);
269
270 if (status & core->pci_irqmask)
271 cx88_core_irq(core, status);
272 if (status & PCI_INT_AUDINT)
273 cx8801_aud_irq(chip);
274 }
275
276 if (MAX_IRQ_LOOP == loop) {
277 printk(KERN_ERR
278 "%s/1: IRQ loop detected, disabling interrupts\n",
279 core->name);
280 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
281 }
282
283 out:
284 return IRQ_RETVAL(handled);
285 }
286
287
288 static int dsp_buffer_free(snd_cx88_card_t *chip)
289 {
290 BUG_ON(!chip->dma_size);
291
292 dprintk(2,"Freeing buffer\n");
293 videobuf_dma_unmap(&chip->pci->dev, chip->dma_risc);
294 videobuf_dma_free(chip->dma_risc);
295 btcx_riscmem_free(chip->pci,&chip->buf->risc);
296 kfree(chip->buf);
297
298 chip->dma_risc = NULL;
299 chip->dma_size = 0;
300
301 return 0;
302 }
303
304 /****************************************************************************
305 ALSA PCM Interface
306 ****************************************************************************/
307
308 /*
309 * Digital hardware definition
310 */
311 #define DEFAULT_FIFO_SIZE 4096
312 static const struct snd_pcm_hardware snd_cx88_digital_hw = {
313 .info = SNDRV_PCM_INFO_MMAP |
314 SNDRV_PCM_INFO_INTERLEAVED |
315 SNDRV_PCM_INFO_BLOCK_TRANSFER |
316 SNDRV_PCM_INFO_MMAP_VALID,
317 .formats = SNDRV_PCM_FMTBIT_S16_LE,
318
319 .rates = SNDRV_PCM_RATE_48000,
320 .rate_min = 48000,
321 .rate_max = 48000,
322 .channels_min = 2,
323 .channels_max = 2,
324 /* Analog audio output will be full of clicks and pops if there
325 are not exactly four lines in the SRAM FIFO buffer. */
326 .period_bytes_min = DEFAULT_FIFO_SIZE/4,
327 .period_bytes_max = DEFAULT_FIFO_SIZE/4,
328 .periods_min = 1,
329 .periods_max = 1024,
330 .buffer_bytes_max = (1024*1024),
331 };
332
333 /*
334 * audio pcm capture open callback
335 */
336 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
337 {
338 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
339 struct snd_pcm_runtime *runtime = substream->runtime;
340 int err;
341
342 if (!chip) {
343 printk(KERN_ERR "BUG: cx88 can't find device struct."
344 " Can't proceed with open\n");
345 return -ENODEV;
346 }
347
348 err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS);
349 if (err < 0)
350 goto _error;
351
352 chip->substream = substream;
353
354 runtime->hw = snd_cx88_digital_hw;
355
356 if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
357 unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
358 bpl &= ~7; /* must be multiple of 8 */
359 runtime->hw.period_bytes_min = bpl;
360 runtime->hw.period_bytes_max = bpl;
361 }
362
363 return 0;
364 _error:
365 dprintk(1,"Error opening PCM!\n");
366 return err;
367 }
368
369 /*
370 * audio close callback
371 */
372 static int snd_cx88_close(struct snd_pcm_substream *substream)
373 {
374 return 0;
375 }
376
377 /*
378 * hw_params callback
379 */
380 static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
381 struct snd_pcm_hw_params * hw_params)
382 {
383 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
384 struct videobuf_dmabuf *dma;
385
386 struct cx88_audio_buffer *buf;
387 int ret;
388
389 if (substream->runtime->dma_area) {
390 dsp_buffer_free(chip);
391 substream->runtime->dma_area = NULL;
392 }
393
394 chip->period_size = params_period_bytes(hw_params);
395 chip->num_periods = params_periods(hw_params);
396 chip->dma_size = chip->period_size * params_periods(hw_params);
397
398 BUG_ON(!chip->dma_size);
399 BUG_ON(chip->num_periods & (chip->num_periods-1));
400
401 buf = kzalloc(sizeof(*buf), GFP_KERNEL);
402 if (NULL == buf)
403 return -ENOMEM;
404
405 buf->bpl = chip->period_size;
406
407 dma = &buf->dma;
408 videobuf_dma_init(dma);
409 ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE,
410 (PAGE_ALIGN(chip->dma_size) >> PAGE_SHIFT));
411 if (ret < 0)
412 goto error;
413
414 ret = videobuf_dma_map(&chip->pci->dev, dma);
415 if (ret < 0)
416 goto error;
417
418 ret = cx88_risc_databuffer(chip->pci, &buf->risc, dma->sglist,
419 chip->period_size, chip->num_periods, 1);
420 if (ret < 0)
421 goto error;
422
423 /* Loop back to start of program */
424 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);
425 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
426
427 chip->buf = buf;
428 chip->dma_risc = dma;
429
430 substream->runtime->dma_area = chip->dma_risc->vaddr;
431 substream->runtime->dma_bytes = chip->dma_size;
432 substream->runtime->dma_addr = 0;
433 return 0;
434
435 error:
436 kfree(buf);
437 return ret;
438 }
439
440 /*
441 * hw free callback
442 */
443 static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
444 {
445
446 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
447
448 if (substream->runtime->dma_area) {
449 dsp_buffer_free(chip);
450 substream->runtime->dma_area = NULL;
451 }
452
453 return 0;
454 }
455
456 /*
457 * prepare callback
458 */
459 static int snd_cx88_prepare(struct snd_pcm_substream *substream)
460 {
461 return 0;
462 }
463
464 /*
465 * trigger callback
466 */
467 static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
468 {
469 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
470 int err;
471
472 /* Local interrupts are already disabled by ALSA */
473 spin_lock(&chip->reg_lock);
474
475 switch (cmd) {
476 case SNDRV_PCM_TRIGGER_START:
477 err=_cx88_start_audio_dma(chip);
478 break;
479 case SNDRV_PCM_TRIGGER_STOP:
480 err=_cx88_stop_audio_dma(chip);
481 break;
482 default:
483 err=-EINVAL;
484 break;
485 }
486
487 spin_unlock(&chip->reg_lock);
488
489 return err;
490 }
491
492 /*
493 * pointer callback
494 */
495 static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
496 {
497 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
498 struct snd_pcm_runtime *runtime = substream->runtime;
499 u16 count;
500
501 count = atomic_read(&chip->count);
502
503 // dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __func__,
504 // count, new, count & (runtime->periods-1),
505 // runtime->period_size * (count & (runtime->periods-1)));
506 return runtime->period_size * (count & (runtime->periods-1));
507 }
508
509 /*
510 * page callback (needed for mmap)
511 */
512 static struct page *snd_cx88_page(struct snd_pcm_substream *substream,
513 unsigned long offset)
514 {
515 void *pageptr = substream->runtime->dma_area + offset;
516 return vmalloc_to_page(pageptr);
517 }
518
519 /*
520 * operators
521 */
522 static struct snd_pcm_ops snd_cx88_pcm_ops = {
523 .open = snd_cx88_pcm_open,
524 .close = snd_cx88_close,
525 .ioctl = snd_pcm_lib_ioctl,
526 .hw_params = snd_cx88_hw_params,
527 .hw_free = snd_cx88_hw_free,
528 .prepare = snd_cx88_prepare,
529 .trigger = snd_cx88_card_trigger,
530 .pointer = snd_cx88_pointer,
531 .page = snd_cx88_page,
532 };
533
534 /*
535 * create a PCM device
536 */
537 static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, const char *name)
538 {
539 int err;
540 struct snd_pcm *pcm;
541
542 err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
543 if (err < 0)
544 return err;
545 pcm->private_data = chip;
546 strcpy(pcm->name, name);
547 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
548
549 return 0;
550 }
551
552 /****************************************************************************
553 CONTROL INTERFACE
554 ****************************************************************************/
555 static int snd_cx88_volume_info(struct snd_kcontrol *kcontrol,
556 struct snd_ctl_elem_info *info)
557 {
558 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
559 info->count = 2;
560 info->value.integer.min = 0;
561 info->value.integer.max = 0x3f;
562
563 return 0;
564 }
565
566 static int snd_cx88_volume_get(struct snd_kcontrol *kcontrol,
567 struct snd_ctl_elem_value *value)
568 {
569 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
570 struct cx88_core *core=chip->core;
571 int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f),
572 bal = cx_read(AUD_BAL_CTL);
573
574 value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol;
575 vol -= (bal & 0x3f);
576 value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol;
577
578 return 0;
579 }
580
581 static void snd_cx88_wm8775_volume_put(struct snd_kcontrol *kcontrol,
582 struct snd_ctl_elem_value *value)
583 {
584 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
585 struct cx88_core *core = chip->core;
586 struct v4l2_control client_ctl;
587 int left = value->value.integer.value[0];
588 int right = value->value.integer.value[1];
589 int v, b;
590
591 memset(&client_ctl, 0, sizeof(client_ctl));
592
593 /* Pass volume & balance onto any WM8775 */
594 if (left >= right) {
595 v = left << 10;
596 b = left ? (0x8000 * right) / left : 0x8000;
597 } else {
598 v = right << 10;
599 b = right ? 0xffff - (0x8000 * left) / right : 0x8000;
600 }
601 client_ctl.value = v;
602 client_ctl.id = V4L2_CID_AUDIO_VOLUME;
603 call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
604
605 client_ctl.value = b;
606 client_ctl.id = V4L2_CID_AUDIO_BALANCE;
607 call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
608 }
609
610 /* OK - TODO: test it */
611 static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol,
612 struct snd_ctl_elem_value *value)
613 {
614 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
615 struct cx88_core *core=chip->core;
616 int left, right, v, b;
617 int changed = 0;
618 u32 old;
619
620 if (core->board.audio_chip == V4L2_IDENT_WM8775)
621 snd_cx88_wm8775_volume_put(kcontrol, value);
622
623 left = value->value.integer.value[0] & 0x3f;
624 right = value->value.integer.value[1] & 0x3f;
625 b = right - left;
626 if (b < 0) {
627 v = 0x3f - left;
628 b = (-b) | 0x40;
629 } else {
630 v = 0x3f - right;
631 }
632 /* Do we really know this will always be called with IRQs on? */
633 spin_lock_irq(&chip->reg_lock);
634 old = cx_read(AUD_VOL_CTL);
635 if (v != (old & 0x3f)) {
636 cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, (old & ~0x3f) | v);
637 changed = 1;
638 }
639 if ((cx_read(AUD_BAL_CTL) & 0x7f) != b) {
640 cx_write(AUD_BAL_CTL, b);
641 changed = 1;
642 }
643 spin_unlock_irq(&chip->reg_lock);
644
645 return changed;
646 }
647
648 static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0);
649
650 static const struct snd_kcontrol_new snd_cx88_volume = {
651 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
652 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
653 SNDRV_CTL_ELEM_ACCESS_TLV_READ,
654 .name = "Analog-TV Volume",
655 .info = snd_cx88_volume_info,
656 .get = snd_cx88_volume_get,
657 .put = snd_cx88_volume_put,
658 .tlv.p = snd_cx88_db_scale,
659 };
660
661 static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol,
662 struct snd_ctl_elem_value *value)
663 {
664 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
665 struct cx88_core *core = chip->core;
666 u32 bit = kcontrol->private_value;
667
668 value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit);
669 return 0;
670 }
671
672 static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol,
673 struct snd_ctl_elem_value *value)
674 {
675 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
676 struct cx88_core *core = chip->core;
677 u32 bit = kcontrol->private_value;
678 int ret = 0;
679 u32 vol;
680
681 spin_lock_irq(&chip->reg_lock);
682 vol = cx_read(AUD_VOL_CTL);
683 if (value->value.integer.value[0] != !(vol & bit)) {
684 vol ^= bit;
685 cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, vol);
686 /* Pass mute onto any WM8775 */
687 if ((core->board.audio_chip == V4L2_IDENT_WM8775) &&
688 ((1<<6) == bit)) {
689 struct v4l2_control client_ctl;
690
691 memset(&client_ctl, 0, sizeof(client_ctl));
692 client_ctl.value = 0 != (vol & bit);
693 client_ctl.id = V4L2_CID_AUDIO_MUTE;
694 call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
695 }
696 ret = 1;
697 }
698 spin_unlock_irq(&chip->reg_lock);
699 return ret;
700 }
701
702 static const struct snd_kcontrol_new snd_cx88_dac_switch = {
703 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
704 .name = "Audio-Out Switch",
705 .info = snd_ctl_boolean_mono_info,
706 .get = snd_cx88_switch_get,
707 .put = snd_cx88_switch_put,
708 .private_value = (1<<8),
709 };
710
711 static const struct snd_kcontrol_new snd_cx88_source_switch = {
712 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
713 .name = "Analog-TV Switch",
714 .info = snd_ctl_boolean_mono_info,
715 .get = snd_cx88_switch_get,
716 .put = snd_cx88_switch_put,
717 .private_value = (1<<6),
718 };
719
720 static int snd_cx88_alc_get(struct snd_kcontrol *kcontrol,
721 struct snd_ctl_elem_value *value)
722 {
723 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
724 struct cx88_core *core = chip->core;
725 struct v4l2_control client_ctl;
726
727 memset(&client_ctl, 0, sizeof(client_ctl));
728 client_ctl.id = V4L2_CID_AUDIO_LOUDNESS;
729 call_hw(core, WM8775_GID, core, g_ctrl, &client_ctl);
730 value->value.integer.value[0] = client_ctl.value ? 1 : 0;
731
732 return 0;
733 }
734
735 static int snd_cx88_alc_put(struct snd_kcontrol *kcontrol,
736 struct snd_ctl_elem_value *value)
737 {
738 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
739 struct cx88_core *core = chip->core;
740 struct v4l2_control client_ctl;
741
742 memset(&client_ctl, 0, sizeof(client_ctl));
743 client_ctl.value = 0 != value->value.integer.value[0];
744 client_ctl.id = V4L2_CID_AUDIO_LOUDNESS;
745 call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
746
747 return 0;
748 }
749
750 static struct snd_kcontrol_new snd_cx88_alc_switch = {
751 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
752 .name = "Line-In ALC Switch",
753 .info = snd_ctl_boolean_mono_info,
754 .get = snd_cx88_alc_get,
755 .put = snd_cx88_alc_put,
756 };
757
758 /****************************************************************************
759 Basic Flow for Sound Devices
760 ****************************************************************************/
761
762 /*
763 * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
764 * Only boards with eeprom and byte 1 at eeprom=1 have it
765 */
766
767 static const struct pci_device_id const cx88_audio_pci_tbl[] __devinitdata = {
768 {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
769 {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
770 {0, }
771 };
772 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
773
774 /*
775 * Chip-specific destructor
776 */
777
778 static int snd_cx88_free(snd_cx88_card_t *chip)
779 {
780
781 if (chip->irq >= 0)
782 free_irq(chip->irq, chip);
783
784 cx88_core_put(chip->core,chip->pci);
785
786 pci_disable_device(chip->pci);
787 return 0;
788 }
789
790 /*
791 * Component Destructor
792 */
793 static void snd_cx88_dev_free(struct snd_card * card)
794 {
795 snd_cx88_card_t *chip = card->private_data;
796
797 snd_cx88_free(chip);
798 }
799
800
801 /*
802 * Alsa Constructor - Component probe
803 */
804
805 static int devno;
806 static int __devinit snd_cx88_create(struct snd_card *card,
807 struct pci_dev *pci,
808 snd_cx88_card_t **rchip,
809 struct cx88_core **core_ptr)
810 {
811 snd_cx88_card_t *chip;
812 struct cx88_core *core;
813 int err;
814 unsigned char pci_lat;
815
816 *rchip = NULL;
817
818 err = pci_enable_device(pci);
819 if (err < 0)
820 return err;
821
822 pci_set_master(pci);
823
824 chip = card->private_data;
825
826 core = cx88_core_get(pci);
827 if (NULL == core) {
828 err = -EINVAL;
829 return err;
830 }
831
832 if (!pci_dma_supported(pci,DMA_BIT_MASK(32))) {
833 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
834 err = -EIO;
835 cx88_core_put(core, pci);
836 return err;
837 }
838
839
840 /* pci init */
841 chip->card = card;
842 chip->pci = pci;
843 chip->irq = -1;
844 spin_lock_init(&chip->reg_lock);
845
846 chip->core = core;
847
848 /* get irq */
849 err = request_irq(chip->pci->irq, cx8801_irq,
850 IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip);
851 if (err < 0) {
852 dprintk(0, "%s: can't get IRQ %d\n",
853 chip->core->name, chip->pci->irq);
854 return err;
855 }
856
857 /* print pci info */
858 pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
859
860 dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
861 "latency: %d, mmio: 0x%llx\n", core->name, devno,
862 pci_name(pci), pci->revision, pci->irq,
863 pci_lat, (unsigned long long)pci_resource_start(pci,0));
864
865 chip->irq = pci->irq;
866 synchronize_irq(chip->irq);
867
868 snd_card_set_dev(card, &pci->dev);
869
870 *rchip = chip;
871 *core_ptr = core;
872
873 return 0;
874 }
875
876 static int __devinit cx88_audio_initdev(struct pci_dev *pci,
877 const struct pci_device_id *pci_id)
878 {
879 struct snd_card *card;
880 snd_cx88_card_t *chip;
881 struct cx88_core *core = NULL;
882 int err;
883
884 if (devno >= SNDRV_CARDS)
885 return (-ENODEV);
886
887 if (!enable[devno]) {
888 ++devno;
889 return (-ENOENT);
890 }
891
892 err = snd_card_create(index[devno], id[devno], THIS_MODULE,
893 sizeof(snd_cx88_card_t), &card);
894 if (err < 0)
895 return err;
896
897 card->private_free = snd_cx88_dev_free;
898
899 err = snd_cx88_create(card, pci, &chip, &core);
900 if (err < 0)
901 goto error;
902
903 err = snd_cx88_pcm(chip, 0, "CX88 Digital");
904 if (err < 0)
905 goto error;
906
907 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip));
908 if (err < 0)
909 goto error;
910 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip));
911 if (err < 0)
912 goto error;
913 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip));
914 if (err < 0)
915 goto error;
916
917 /* If there's a wm8775 then add a Line-In ALC switch */
918 if (core->board.audio_chip == V4L2_IDENT_WM8775)
919 snd_ctl_add(card, snd_ctl_new1(&snd_cx88_alc_switch, chip));
920
921 strcpy (card->driver, "CX88x");
922 sprintf(card->shortname, "Conexant CX%x", pci->device);
923 sprintf(card->longname, "%s at %#llx",
924 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
925 strcpy (card->mixername, "CX88");
926
927 dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
928 card->driver,devno);
929
930 err = snd_card_register(card);
931 if (err < 0)
932 goto error;
933 pci_set_drvdata(pci,card);
934
935 devno++;
936 return 0;
937
938 error:
939 snd_card_free(card);
940 return err;
941 }
942 /*
943 * ALSA destructor
944 */
945 static void __devexit cx88_audio_finidev(struct pci_dev *pci)
946 {
947 struct cx88_audio_dev *card = pci_get_drvdata(pci);
948
949 snd_card_free((void *)card);
950
951 pci_set_drvdata(pci, NULL);
952
953 devno--;
954 }
955
956 /*
957 * PCI driver definition
958 */
959
960 static struct pci_driver cx88_audio_pci_driver = {
961 .name = "cx88_audio",
962 .id_table = cx88_audio_pci_tbl,
963 .probe = cx88_audio_initdev,
964 .remove = __devexit_p(cx88_audio_finidev),
965 };
966
967 /****************************************************************************
968 LINUX MODULE INIT
969 ****************************************************************************/
970
971 /*
972 * module init
973 */
974 static int __init cx88_audio_init(void)
975 {
976 printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
977 (CX88_VERSION_CODE >> 16) & 0xff,
978 (CX88_VERSION_CODE >> 8) & 0xff,
979 CX88_VERSION_CODE & 0xff);
980 #ifdef SNAPSHOT
981 printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
982 SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
983 #endif
984 return pci_register_driver(&cx88_audio_pci_driver);
985 }
986
987 /*
988 * module remove
989 */
990 static void __exit cx88_audio_fini(void)
991 {
992 pci_unregister_driver(&cx88_audio_pci_driver);
993 }
994
995 module_init(cx88_audio_init);
996 module_exit(cx88_audio_fini);
997
998 /* ----------------------------------------------------------- */
999 /*
1000 * Local variables:
1001 * c-basic-offset: 8
1002 * End:
1003 */
CRIS linux kernel tree