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...) do { \
49 if (debug + 1 > level) \
50 printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg);\
51 } while(0)
52
53 #define dprintk_core(level, fmt, arg...) do { \
54 if (debug + 1 > level) \
55 printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg);\
56 } while(0)
57
58 /****************************************************************************
59 Data type declarations - Can be moded to a header file later
60 ****************************************************************************/
61
62 struct cx88_audio_buffer {
63 unsigned int bpl;
64 struct btcx_riscmem risc;
65 struct videobuf_dmabuf dma;
66 };
67
68 struct cx88_audio_dev {
69 struct cx88_core *core;
70 struct cx88_dmaqueue q;
71
72 /* pci i/o */
73 struct pci_dev *pci;
74
75 /* audio controls */
76 int irq;
77
78 struct snd_card *card;
79
80 spinlock_t reg_lock;
81 atomic_t count;
82
83 unsigned int dma_size;
84 unsigned int period_size;
85 unsigned int num_periods;
86
87 struct videobuf_dmabuf *dma_risc;
88
89 struct cx88_audio_buffer *buf;
90
91 struct snd_pcm_substream *substream;
92 };
93 typedef struct cx88_audio_dev snd_cx88_card_t;
94
95
96
97 /****************************************************************************
98 Module global static vars
99 ****************************************************************************/
100
101 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
102 static const char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
103 static bool enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
104
105 module_param_array(enable, bool, NULL, 0444);
106 MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
107
108 module_param_array(index, int, NULL, 0444);
109 MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
110
111
112 /****************************************************************************
113 Module macros
114 ****************************************************************************/
115
116 MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
117 MODULE_AUTHOR("Ricardo Cerqueira");
118 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
119 MODULE_LICENSE("GPL");
120 MODULE_VERSION(CX88_VERSION);
121
122 MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
123 "{{Conexant,23882},"
124 "{{Conexant,23883}");
125 static unsigned int debug;
126 module_param(debug,int,0644);
127 MODULE_PARM_DESC(debug,"enable debug messages");
128
129 /****************************************************************************
130 Module specific funtions
131 ****************************************************************************/
132
133 /*
134 * BOARD Specific: Sets audio DMA
135 */
136
_cx88_start_audio_dma(snd_cx88_card_t * chip)137 static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
138 {
139 struct cx88_audio_buffer *buf = chip->buf;
140 struct cx88_core *core=chip->core;
141 const struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
142
143 /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
144 cx_clear(MO_AUD_DMACNTRL, 0x11);
145
146 /* setup fifo + format - out channel */
147 cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma);
148
149 /* sets bpl size */
150 cx_write(MO_AUDD_LNGTH, buf->bpl);
151
152 /* reset counter */
153 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
154 atomic_set(&chip->count, 0);
155
156 dprintk(1, "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d "
157 "byte buffer\n", buf->bpl, cx_read(audio_ch->cmds_start + 8)>>1,
158 chip->num_periods, buf->bpl * chip->num_periods);
159
160 /* Enables corresponding bits at AUD_INT_STAT */
161 cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
162 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
163
164 /* Clean any pending interrupt bits already set */
165 cx_write(MO_AUD_INTSTAT, ~0);
166
167 /* enable audio irqs */
168 cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
169
170 /* start dma */
171 cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
172 cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
173
174 if (debug)
175 cx88_sram_channel_dump(chip->core, audio_ch);
176
177 return 0;
178 }
179
180 /*
181 * BOARD Specific: Resets audio DMA
182 */
_cx88_stop_audio_dma(snd_cx88_card_t * chip)183 static int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
184 {
185 struct cx88_core *core=chip->core;
186 dprintk(1, "Stopping audio DMA\n");
187
188 /* stop dma */
189 cx_clear(MO_AUD_DMACNTRL, 0x11);
190
191 /* disable irqs */
192 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
193 cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
194 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
195
196 if (debug)
197 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
198
199 return 0;
200 }
201
202 #define MAX_IRQ_LOOP 50
203
204 /*
205 * BOARD Specific: IRQ dma bits
206 */
207 static const char *cx88_aud_irqs[32] = {
208 "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
209 NULL, /* reserved */
210 "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
211 NULL, /* reserved */
212 "dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */
213 NULL, /* reserved */
214 "dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */
215 NULL, /* reserved */
216 "opc_err", "par_err", "rip_err", /* 16-18 */
217 "pci_abort", "ber_irq", "mchg_irq" /* 19-21 */
218 };
219
220 /*
221 * BOARD Specific: Threats IRQ audio specific calls
222 */
cx8801_aud_irq(snd_cx88_card_t * chip)223 static void cx8801_aud_irq(snd_cx88_card_t *chip)
224 {
225 struct cx88_core *core = chip->core;
226 u32 status, mask;
227
228 status = cx_read(MO_AUD_INTSTAT);
229 mask = cx_read(MO_AUD_INTMSK);
230 if (0 == (status & mask))
231 return;
232 cx_write(MO_AUD_INTSTAT, status);
233 if (debug > 1 || (status & mask & ~0xff))
234 cx88_print_irqbits(core->name, "irq aud",
235 cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
236 status, mask);
237 /* risc op code error */
238 if (status & AUD_INT_OPC_ERR) {
239 printk(KERN_WARNING "%s/1: Audio risc op code error\n",core->name);
240 cx_clear(MO_AUD_DMACNTRL, 0x11);
241 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
242 }
243 if (status & AUD_INT_DN_SYNC) {
244 dprintk(1, "Downstream sync error\n");
245 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
246 return;
247 }
248 /* risc1 downstream */
249 if (status & AUD_INT_DN_RISCI1) {
250 atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT));
251 snd_pcm_period_elapsed(chip->substream);
252 }
253 /* FIXME: Any other status should deserve a special handling? */
254 }
255
256 /*
257 * BOARD Specific: Handles IRQ calls
258 */
cx8801_irq(int irq,void * dev_id)259 static irqreturn_t cx8801_irq(int irq, void *dev_id)
260 {
261 snd_cx88_card_t *chip = dev_id;
262 struct cx88_core *core = chip->core;
263 u32 status;
264 int loop, handled = 0;
265
266 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
267 status = cx_read(MO_PCI_INTSTAT) &
268 (core->pci_irqmask | PCI_INT_AUDINT);
269 if (0 == status)
270 goto out;
271 dprintk(3, "cx8801_irq loop %d/%d, status %x\n",
272 loop, MAX_IRQ_LOOP, status);
273 handled = 1;
274 cx_write(MO_PCI_INTSTAT, status);
275
276 if (status & core->pci_irqmask)
277 cx88_core_irq(core, status);
278 if (status & PCI_INT_AUDINT)
279 cx8801_aud_irq(chip);
280 }
281
282 if (MAX_IRQ_LOOP == loop) {
283 printk(KERN_ERR
284 "%s/1: IRQ loop detected, disabling interrupts\n",
285 core->name);
286 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
287 }
288
289 out:
290 return IRQ_RETVAL(handled);
291 }
292
293
dsp_buffer_free(snd_cx88_card_t * chip)294 static int dsp_buffer_free(snd_cx88_card_t *chip)
295 {
296 BUG_ON(!chip->dma_size);
297
298 dprintk(2,"Freeing buffer\n");
299 videobuf_dma_unmap(&chip->pci->dev, chip->dma_risc);
300 videobuf_dma_free(chip->dma_risc);
301 btcx_riscmem_free(chip->pci,&chip->buf->risc);
302 kfree(chip->buf);
303
304 chip->dma_risc = NULL;
305 chip->dma_size = 0;
306
307 return 0;
308 }
309
310 /****************************************************************************
311 ALSA PCM Interface
312 ****************************************************************************/
313
314 /*
315 * Digital hardware definition
316 */
317 #define DEFAULT_FIFO_SIZE 4096
318 static const struct snd_pcm_hardware snd_cx88_digital_hw = {
319 .info = SNDRV_PCM_INFO_MMAP |
320 SNDRV_PCM_INFO_INTERLEAVED |
321 SNDRV_PCM_INFO_BLOCK_TRANSFER |
322 SNDRV_PCM_INFO_MMAP_VALID,
323 .formats = SNDRV_PCM_FMTBIT_S16_LE,
324
325 .rates = SNDRV_PCM_RATE_48000,
326 .rate_min = 48000,
327 .rate_max = 48000,
328 .channels_min = 2,
329 .channels_max = 2,
330 /* Analog audio output will be full of clicks and pops if there
331 are not exactly four lines in the SRAM FIFO buffer. */
332 .period_bytes_min = DEFAULT_FIFO_SIZE/4,
333 .period_bytes_max = DEFAULT_FIFO_SIZE/4,
334 .periods_min = 1,
335 .periods_max = 1024,
336 .buffer_bytes_max = (1024*1024),
337 };
338
339 /*
340 * audio pcm capture open callback
341 */
snd_cx88_pcm_open(struct snd_pcm_substream * substream)342 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
343 {
344 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
345 struct snd_pcm_runtime *runtime = substream->runtime;
346 int err;
347
348 if (!chip) {
349 printk(KERN_ERR "BUG: cx88 can't find device struct."
350 " Can't proceed with open\n");
351 return -ENODEV;
352 }
353
354 err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS);
355 if (err < 0)
356 goto _error;
357
358 chip->substream = substream;
359
360 runtime->hw = snd_cx88_digital_hw;
361
362 if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
363 unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
364 bpl &= ~7; /* must be multiple of 8 */
365 runtime->hw.period_bytes_min = bpl;
366 runtime->hw.period_bytes_max = bpl;
367 }
368
369 return 0;
370 _error:
371 dprintk(1,"Error opening PCM!\n");
372 return err;
373 }
374
375 /*
376 * audio close callback
377 */
snd_cx88_close(struct snd_pcm_substream * substream)378 static int snd_cx88_close(struct snd_pcm_substream *substream)
379 {
380 return 0;
381 }
382
383 /*
384 * hw_params callback
385 */
snd_cx88_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params)386 static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
387 struct snd_pcm_hw_params * hw_params)
388 {
389 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
390 struct videobuf_dmabuf *dma;
391
392 struct cx88_audio_buffer *buf;
393 int ret;
394
395 if (substream->runtime->dma_area) {
396 dsp_buffer_free(chip);
397 substream->runtime->dma_area = NULL;
398 }
399
400 chip->period_size = params_period_bytes(hw_params);
401 chip->num_periods = params_periods(hw_params);
402 chip->dma_size = chip->period_size * params_periods(hw_params);
403
404 BUG_ON(!chip->dma_size);
405 BUG_ON(chip->num_periods & (chip->num_periods-1));
406
407 buf = kzalloc(sizeof(*buf), GFP_KERNEL);
408 if (NULL == buf)
409 return -ENOMEM;
410
411 buf->bpl = chip->period_size;
412
413 dma = &buf->dma;
414 videobuf_dma_init(dma);
415 ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE,
416 (PAGE_ALIGN(chip->dma_size) >> PAGE_SHIFT));
417 if (ret < 0)
418 goto error;
419
420 ret = videobuf_dma_map(&chip->pci->dev, dma);
421 if (ret < 0)
422 goto error;
423
424 ret = cx88_risc_databuffer(chip->pci, &buf->risc, dma->sglist,
425 chip->period_size, chip->num_periods, 1);
426 if (ret < 0)
427 goto error;
428
429 /* Loop back to start of program */
430 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);
431 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
432
433 chip->buf = buf;
434 chip->dma_risc = dma;
435
436 substream->runtime->dma_area = chip->dma_risc->vaddr;
437 substream->runtime->dma_bytes = chip->dma_size;
438 substream->runtime->dma_addr = 0;
439 return 0;
440
441 error:
442 kfree(buf);
443 return ret;
444 }
445
446 /*
447 * hw free callback
448 */
snd_cx88_hw_free(struct snd_pcm_substream * substream)449 static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
450 {
451
452 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
453
454 if (substream->runtime->dma_area) {
455 dsp_buffer_free(chip);
456 substream->runtime->dma_area = NULL;
457 }
458
459 return 0;
460 }
461
462 /*
463 * prepare callback
464 */
snd_cx88_prepare(struct snd_pcm_substream * substream)465 static int snd_cx88_prepare(struct snd_pcm_substream *substream)
466 {
467 return 0;
468 }
469
470 /*
471 * trigger callback
472 */
snd_cx88_card_trigger(struct snd_pcm_substream * substream,int cmd)473 static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
474 {
475 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
476 int err;
477
478 /* Local interrupts are already disabled by ALSA */
479 spin_lock(&chip->reg_lock);
480
481 switch (cmd) {
482 case SNDRV_PCM_TRIGGER_START:
483 err=_cx88_start_audio_dma(chip);
484 break;
485 case SNDRV_PCM_TRIGGER_STOP:
486 err=_cx88_stop_audio_dma(chip);
487 break;
488 default:
489 err=-EINVAL;
490 break;
491 }
492
493 spin_unlock(&chip->reg_lock);
494
495 return err;
496 }
497
498 /*
499 * pointer callback
500 */
snd_cx88_pointer(struct snd_pcm_substream * substream)501 static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
502 {
503 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
504 struct snd_pcm_runtime *runtime = substream->runtime;
505 u16 count;
506
507 count = atomic_read(&chip->count);
508
509 // dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __func__,
510 // count, new, count & (runtime->periods-1),
511 // runtime->period_size * (count & (runtime->periods-1)));
512 return runtime->period_size * (count & (runtime->periods-1));
513 }
514
515 /*
516 * page callback (needed for mmap)
517 */
snd_cx88_page(struct snd_pcm_substream * substream,unsigned long offset)518 static struct page *snd_cx88_page(struct snd_pcm_substream *substream,
519 unsigned long offset)
520 {
521 void *pageptr = substream->runtime->dma_area + offset;
522 return vmalloc_to_page(pageptr);
523 }
524
525 /*
526 * operators
527 */
528 static struct snd_pcm_ops snd_cx88_pcm_ops = {
529 .open = snd_cx88_pcm_open,
530 .close = snd_cx88_close,
531 .ioctl = snd_pcm_lib_ioctl,
532 .hw_params = snd_cx88_hw_params,
533 .hw_free = snd_cx88_hw_free,
534 .prepare = snd_cx88_prepare,
535 .trigger = snd_cx88_card_trigger,
536 .pointer = snd_cx88_pointer,
537 .page = snd_cx88_page,
538 };
539
540 /*
541 * create a PCM device
542 */
snd_cx88_pcm(snd_cx88_card_t * chip,int device,const char * name)543 static int snd_cx88_pcm(snd_cx88_card_t *chip, int device, const char *name)
544 {
545 int err;
546 struct snd_pcm *pcm;
547
548 err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
549 if (err < 0)
550 return err;
551 pcm->private_data = chip;
552 strcpy(pcm->name, name);
553 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
554
555 return 0;
556 }
557
558 /****************************************************************************
559 CONTROL INTERFACE
560 ****************************************************************************/
snd_cx88_volume_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * info)561 static int snd_cx88_volume_info(struct snd_kcontrol *kcontrol,
562 struct snd_ctl_elem_info *info)
563 {
564 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
565 info->count = 2;
566 info->value.integer.min = 0;
567 info->value.integer.max = 0x3f;
568
569 return 0;
570 }
571
snd_cx88_volume_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)572 static int snd_cx88_volume_get(struct snd_kcontrol *kcontrol,
573 struct snd_ctl_elem_value *value)
574 {
575 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
576 struct cx88_core *core=chip->core;
577 int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f),
578 bal = cx_read(AUD_BAL_CTL);
579
580 value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol;
581 vol -= (bal & 0x3f);
582 value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol;
583
584 return 0;
585 }
586
snd_cx88_wm8775_volume_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)587 static void snd_cx88_wm8775_volume_put(struct snd_kcontrol *kcontrol,
588 struct snd_ctl_elem_value *value)
589 {
590 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
591 struct cx88_core *core = chip->core;
592 int left = value->value.integer.value[0];
593 int right = value->value.integer.value[1];
594 int v, b;
595
596 /* Pass volume & balance onto any WM8775 */
597 if (left >= right) {
598 v = left << 10;
599 b = left ? (0x8000 * right) / left : 0x8000;
600 } else {
601 v = right << 10;
602 b = right ? 0xffff - (0x8000 * left) / right : 0x8000;
603 }
604 wm8775_s_ctrl(core, V4L2_CID_AUDIO_VOLUME, v);
605 wm8775_s_ctrl(core, V4L2_CID_AUDIO_BALANCE, b);
606 }
607
608 /* OK - TODO: test it */
snd_cx88_volume_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)609 static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol,
610 struct snd_ctl_elem_value *value)
611 {
612 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
613 struct cx88_core *core=chip->core;
614 int left, right, v, b;
615 int changed = 0;
616 u32 old;
617
618 if (core->sd_wm8775)
619 snd_cx88_wm8775_volume_put(kcontrol, value);
620
621 left = value->value.integer.value[0] & 0x3f;
622 right = value->value.integer.value[1] & 0x3f;
623 b = right - left;
624 if (b < 0) {
625 v = 0x3f - left;
626 b = (-b) | 0x40;
627 } else {
628 v = 0x3f - right;
629 }
630 /* Do we really know this will always be called with IRQs on? */
631 spin_lock_irq(&chip->reg_lock);
632 old = cx_read(AUD_VOL_CTL);
633 if (v != (old & 0x3f)) {
634 cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, (old & ~0x3f) | v);
635 changed = 1;
636 }
637 if ((cx_read(AUD_BAL_CTL) & 0x7f) != b) {
638 cx_write(AUD_BAL_CTL, b);
639 changed = 1;
640 }
641 spin_unlock_irq(&chip->reg_lock);
642
643 return changed;
644 }
645
646 static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0);
647
648 static const struct snd_kcontrol_new snd_cx88_volume = {
649 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
650 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
651 SNDRV_CTL_ELEM_ACCESS_TLV_READ,
652 .name = "Analog-TV Volume",
653 .info = snd_cx88_volume_info,
654 .get = snd_cx88_volume_get,
655 .put = snd_cx88_volume_put,
656 .tlv.p = snd_cx88_db_scale,
657 };
658
snd_cx88_switch_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)659 static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol,
660 struct snd_ctl_elem_value *value)
661 {
662 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
663 struct cx88_core *core = chip->core;
664 u32 bit = kcontrol->private_value;
665
666 value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit);
667 return 0;
668 }
669
snd_cx88_switch_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)670 static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol,
671 struct snd_ctl_elem_value *value)
672 {
673 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
674 struct cx88_core *core = chip->core;
675 u32 bit = kcontrol->private_value;
676 int ret = 0;
677 u32 vol;
678
679 spin_lock_irq(&chip->reg_lock);
680 vol = cx_read(AUD_VOL_CTL);
681 if (value->value.integer.value[0] != !(vol & bit)) {
682 vol ^= bit;
683 cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, vol);
684 /* Pass mute onto any WM8775 */
685 if (core->sd_wm8775 && ((1<<6) == bit))
686 wm8775_s_ctrl(core, V4L2_CID_AUDIO_MUTE, 0 != (vol & bit));
687 ret = 1;
688 }
689 spin_unlock_irq(&chip->reg_lock);
690 return ret;
691 }
692
693 static const struct snd_kcontrol_new snd_cx88_dac_switch = {
694 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
695 .name = "Audio-Out Switch",
696 .info = snd_ctl_boolean_mono_info,
697 .get = snd_cx88_switch_get,
698 .put = snd_cx88_switch_put,
699 .private_value = (1<<8),
700 };
701
702 static const struct snd_kcontrol_new snd_cx88_source_switch = {
703 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
704 .name = "Analog-TV Switch",
705 .info = snd_ctl_boolean_mono_info,
706 .get = snd_cx88_switch_get,
707 .put = snd_cx88_switch_put,
708 .private_value = (1<<6),
709 };
710
snd_cx88_alc_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)711 static int snd_cx88_alc_get(struct snd_kcontrol *kcontrol,
712 struct snd_ctl_elem_value *value)
713 {
714 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
715 struct cx88_core *core = chip->core;
716 s32 val;
717
718 val = wm8775_g_ctrl(core, V4L2_CID_AUDIO_LOUDNESS);
719 value->value.integer.value[0] = val ? 1 : 0;
720 return 0;
721 }
722
snd_cx88_alc_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * value)723 static int snd_cx88_alc_put(struct snd_kcontrol *kcontrol,
724 struct snd_ctl_elem_value *value)
725 {
726 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
727 struct cx88_core *core = chip->core;
728 struct v4l2_control client_ctl;
729
730 memset(&client_ctl, 0, sizeof(client_ctl));
731 client_ctl.value = 0 != value->value.integer.value[0];
732 client_ctl.id = V4L2_CID_AUDIO_LOUDNESS;
733 call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
734
735 return 0;
736 }
737
738 static struct snd_kcontrol_new snd_cx88_alc_switch = {
739 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
740 .name = "Line-In ALC Switch",
741 .info = snd_ctl_boolean_mono_info,
742 .get = snd_cx88_alc_get,
743 .put = snd_cx88_alc_put,
744 };
745
746 /****************************************************************************
747 Basic Flow for Sound Devices
748 ****************************************************************************/
749
750 /*
751 * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
752 * Only boards with eeprom and byte 1 at eeprom=1 have it
753 */
754
755 static const struct pci_device_id cx88_audio_pci_tbl[] = {
756 {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
757 {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
758 {0, }
759 };
760 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
761
762 /*
763 * Chip-specific destructor
764 */
765
snd_cx88_free(snd_cx88_card_t * chip)766 static int snd_cx88_free(snd_cx88_card_t *chip)
767 {
768
769 if (chip->irq >= 0)
770 free_irq(chip->irq, chip);
771
772 cx88_core_put(chip->core,chip->pci);
773
774 pci_disable_device(chip->pci);
775 return 0;
776 }
777
778 /*
779 * Component Destructor
780 */
snd_cx88_dev_free(struct snd_card * card)781 static void snd_cx88_dev_free(struct snd_card * card)
782 {
783 snd_cx88_card_t *chip = card->private_data;
784
785 snd_cx88_free(chip);
786 }
787
788
789 /*
790 * Alsa Constructor - Component probe
791 */
792
793 static int devno;
snd_cx88_create(struct snd_card * card,struct pci_dev * pci,snd_cx88_card_t ** rchip,struct cx88_core ** core_ptr)794 static int snd_cx88_create(struct snd_card *card, struct pci_dev *pci,
795 snd_cx88_card_t **rchip,
796 struct cx88_core **core_ptr)
797 {
798 snd_cx88_card_t *chip;
799 struct cx88_core *core;
800 int err;
801 unsigned char pci_lat;
802
803 *rchip = NULL;
804
805 err = pci_enable_device(pci);
806 if (err < 0)
807 return err;
808
809 pci_set_master(pci);
810
811 chip = card->private_data;
812
813 core = cx88_core_get(pci);
814 if (NULL == core) {
815 err = -EINVAL;
816 return err;
817 }
818
819 if (!pci_dma_supported(pci,DMA_BIT_MASK(32))) {
820 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
821 err = -EIO;
822 cx88_core_put(core, pci);
823 return err;
824 }
825
826
827 /* pci init */
828 chip->card = card;
829 chip->pci = pci;
830 chip->irq = -1;
831 spin_lock_init(&chip->reg_lock);
832
833 chip->core = core;
834
835 /* get irq */
836 err = request_irq(chip->pci->irq, cx8801_irq,
837 IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip);
838 if (err < 0) {
839 dprintk(0, "%s: can't get IRQ %d\n",
840 chip->core->name, chip->pci->irq);
841 return err;
842 }
843
844 /* print pci info */
845 pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
846
847 dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
848 "latency: %d, mmio: 0x%llx\n", core->name, devno,
849 pci_name(pci), pci->revision, pci->irq,
850 pci_lat, (unsigned long long)pci_resource_start(pci,0));
851
852 chip->irq = pci->irq;
853 synchronize_irq(chip->irq);
854
855 snd_card_set_dev(card, &pci->dev);
856
857 *rchip = chip;
858 *core_ptr = core;
859
860 return 0;
861 }
862
cx88_audio_initdev(struct pci_dev * pci,const struct pci_device_id * pci_id)863 static int cx88_audio_initdev(struct pci_dev *pci,
864 const struct pci_device_id *pci_id)
865 {
866 struct snd_card *card;
867 snd_cx88_card_t *chip;
868 struct cx88_core *core = NULL;
869 int err;
870
871 if (devno >= SNDRV_CARDS)
872 return (-ENODEV);
873
874 if (!enable[devno]) {
875 ++devno;
876 return (-ENOENT);
877 }
878
879 err = snd_card_create(index[devno], id[devno], THIS_MODULE,
880 sizeof(snd_cx88_card_t), &card);
881 if (err < 0)
882 return err;
883
884 card->private_free = snd_cx88_dev_free;
885
886 err = snd_cx88_create(card, pci, &chip, &core);
887 if (err < 0)
888 goto error;
889
890 err = snd_cx88_pcm(chip, 0, "CX88 Digital");
891 if (err < 0)
892 goto error;
893
894 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip));
895 if (err < 0)
896 goto error;
897 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip));
898 if (err < 0)
899 goto error;
900 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip));
901 if (err < 0)
902 goto error;
903
904 /* If there's a wm8775 then add a Line-In ALC switch */
905 if (core->sd_wm8775)
906 snd_ctl_add(card, snd_ctl_new1(&snd_cx88_alc_switch, chip));
907
908 strcpy (card->driver, "CX88x");
909 sprintf(card->shortname, "Conexant CX%x", pci->device);
910 sprintf(card->longname, "%s at %#llx",
911 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
912 strcpy (card->mixername, "CX88");
913
914 dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
915 card->driver,devno);
916
917 err = snd_card_register(card);
918 if (err < 0)
919 goto error;
920 pci_set_drvdata(pci,card);
921
922 devno++;
923 return 0;
924
925 error:
926 snd_card_free(card);
927 return err;
928 }
929 /*
930 * ALSA destructor
931 */
cx88_audio_finidev(struct pci_dev * pci)932 static void cx88_audio_finidev(struct pci_dev *pci)
933 {
934 struct cx88_audio_dev *card = pci_get_drvdata(pci);
935
936 snd_card_free((void *)card);
937
938 pci_set_drvdata(pci, NULL);
939
940 devno--;
941 }
942
943 /*
944 * PCI driver definition
945 */
946
947 static struct pci_driver cx88_audio_pci_driver = {
948 .name = "cx88_audio",
949 .id_table = cx88_audio_pci_tbl,
950 .probe = cx88_audio_initdev,
951 .remove = cx88_audio_finidev,
952 };
953
954 /****************************************************************************
955 LINUX MODULE INIT
956 ****************************************************************************/
957
958 /*
959 * module init
960 */
cx88_audio_init(void)961 static int __init cx88_audio_init(void)
962 {
963 printk(KERN_INFO "cx2388x alsa driver version %s loaded\n",
964 CX88_VERSION);
965 return pci_register_driver(&cx88_audio_pci_driver);
966 }
967
968 /*
969 * module remove
970 */
cx88_audio_fini(void)971 static void __exit cx88_audio_fini(void)
972 {
973 pci_unregister_driver(&cx88_audio_pci_driver);
974 }
975
976 module_init(cx88_audio_init);
977 module_exit(cx88_audio_fini);
978