Version:  2.0.40 2.2.26 2.4.37 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15

Linux/drivers/media/pci/cx88/cx88-alsa.c

  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 
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  */
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  */
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  */
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 
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  */
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  */
378 static int snd_cx88_close(struct snd_pcm_substream *substream)
379 {
380         return 0;
381 }
382 
383 /*
384  * hw_params callback
385  */
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  */
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  */
465 static int snd_cx88_prepare(struct snd_pcm_substream *substream)
466 {
467         return 0;
468 }
469 
470 /*
471  * trigger callback
472  */
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  */
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  */
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  */
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  ****************************************************************************/
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 
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 
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 */
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 
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 
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 
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 
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 
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  */
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;
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, 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         *rchip = chip;
856         *core_ptr = core;
857 
858         return 0;
859 }
860 
861 static int cx88_audio_initdev(struct pci_dev *pci,
862                               const struct pci_device_id *pci_id)
863 {
864         struct snd_card  *card;
865         snd_cx88_card_t  *chip;
866         struct cx88_core *core = NULL;
867         int              err;
868 
869         if (devno >= SNDRV_CARDS)
870                 return (-ENODEV);
871 
872         if (!enable[devno]) {
873                 ++devno;
874                 return (-ENOENT);
875         }
876 
877         err = snd_card_new(&pci->dev, index[devno], id[devno], THIS_MODULE,
878                            sizeof(snd_cx88_card_t), &card);
879         if (err < 0)
880                 return err;
881 
882         card->private_free = snd_cx88_dev_free;
883 
884         err = snd_cx88_create(card, pci, &chip, &core);
885         if (err < 0)
886                 goto error;
887 
888         err = snd_cx88_pcm(chip, 0, "CX88 Digital");
889         if (err < 0)
890                 goto error;
891 
892         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip));
893         if (err < 0)
894                 goto error;
895         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip));
896         if (err < 0)
897                 goto error;
898         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip));
899         if (err < 0)
900                 goto error;
901 
902         /* If there's a wm8775 then add a Line-In ALC switch */
903         if (core->sd_wm8775)
904                 snd_ctl_add(card, snd_ctl_new1(&snd_cx88_alc_switch, chip));
905 
906         strcpy (card->driver, "CX88x");
907         sprintf(card->shortname, "Conexant CX%x", pci->device);
908         sprintf(card->longname, "%s at %#llx",
909                 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
910         strcpy (card->mixername, "CX88");
911 
912         dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
913                card->driver,devno);
914 
915         err = snd_card_register(card);
916         if (err < 0)
917                 goto error;
918         pci_set_drvdata(pci,card);
919 
920         devno++;
921         return 0;
922 
923 error:
924         snd_card_free(card);
925         return err;
926 }
927 /*
928  * ALSA destructor
929  */
930 static void cx88_audio_finidev(struct pci_dev *pci)
931 {
932         struct snd_card *card = pci_get_drvdata(pci);
933 
934         snd_card_free(card);
935 
936         devno--;
937 }
938 
939 /*
940  * PCI driver definition
941  */
942 
943 static struct pci_driver cx88_audio_pci_driver = {
944         .name     = "cx88_audio",
945         .id_table = cx88_audio_pci_tbl,
946         .probe    = cx88_audio_initdev,
947         .remove   = cx88_audio_finidev,
948 };
949 
950 module_pci_driver(cx88_audio_pci_driver);
951 

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