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TOMOYO Linux Cross Reference
Linux/sound/pci/emu10k1/p16v.c

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  1 /*
  2  *  Copyright (c) by James Courtier-Dutton <James@superbug.demon.co.uk>
  3  *  Driver p16v chips
  4  *  Version: 0.25
  5  *
  6  *  FEATURES currently supported:
  7  *    Output fixed at S32_LE, 2 channel to hw:0,0
  8  *    Rates: 44.1, 48, 96, 192.
  9  *
 10  *  Changelog:
 11  *  0.8
 12  *    Use separate card based buffer for periods table.
 13  *  0.9
 14  *    Use 2 channel output streams instead of 8 channel.
 15  *       (8 channel output streams might be good for ASIO type output)
 16  *    Corrected speaker output, so Front -> Front etc.
 17  *  0.10
 18  *    Fixed missed interrupts.
 19  *  0.11
 20  *    Add Sound card model number and names.
 21  *    Add Analog volume controls.
 22  *  0.12
 23  *    Corrected playback interrupts. Now interrupt per period, instead of half period.
 24  *  0.13
 25  *    Use single trigger for multichannel.
 26  *  0.14
 27  *    Mic capture now works at fixed: S32_LE, 96000Hz, Stereo.
 28  *  0.15
 29  *    Force buffer_size / period_size == INTEGER.
 30  *  0.16
 31  *    Update p16v.c to work with changed alsa api.
 32  *  0.17
 33  *    Update p16v.c to work with changed alsa api. Removed boot_devs.
 34  *  0.18
 35  *    Merging with snd-emu10k1 driver.
 36  *  0.19
 37  *    One stereo channel at 24bit now works.
 38  *  0.20
 39  *    Added better register defines.
 40  *  0.21
 41  *    Integrated with snd-emu10k1 driver.
 42  *  0.22
 43  *    Removed #if 0 ... #endif
 44  *  0.23
 45  *    Implement different capture rates.
 46  *  0.24
 47  *    Implement different capture source channels.
 48  *    e.g. When HD Capture source is set to SPDIF,
 49  *    setting HD Capture channel to 0 captures from CDROM digital input.
 50  *    setting HD Capture channel to 1 captures from SPDIF in.
 51  *  0.25
 52  *    Include capture buffer sizes.
 53  *
 54  *  BUGS:
 55  *    Some stability problems when unloading the snd-p16v kernel module.
 56  *    --
 57  *
 58  *  TODO:
 59  *    SPDIF out.
 60  *    Find out how to change capture sample rates. E.g. To record SPDIF at 48000Hz.
 61  *    Currently capture fixed at 48000Hz.
 62  *
 63  *    --
 64  *  GENERAL INFO:
 65  *    Model: SB0240
 66  *    P16V Chip: CA0151-DBS
 67  *    Audigy 2 Chip: CA0102-IAT
 68  *    AC97 Codec: STAC 9721
 69  *    ADC: Philips 1361T (Stereo 24bit)
 70  *    DAC: CS4382-K (8-channel, 24bit, 192Khz)
 71  *
 72  *  This code was initially based on code from ALSA's emu10k1x.c which is:
 73  *  Copyright (c) by Francisco Moraes <fmoraes@nc.rr.com>
 74  *
 75  *   This program is free software; you can redistribute it and/or modify
 76  *   it under the terms of the GNU General Public License as published by
 77  *   the Free Software Foundation; either version 2 of the License, or
 78  *   (at your option) any later version.
 79  *
 80  *   This program is distributed in the hope that it will be useful,
 81  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 82  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 83  *   GNU General Public License for more details.
 84  *
 85  *   You should have received a copy of the GNU General Public License
 86  *   along with this program; if not, write to the Free Software
 87  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 88  *
 89  */
 90 #include <linux/delay.h>
 91 #include <linux/init.h>
 92 #include <linux/interrupt.h>
 93 #include <linux/pci.h>
 94 #include <linux/slab.h>
 95 #include <linux/vmalloc.h>
 96 #include <linux/moduleparam.h>
 97 #include <sound/core.h>
 98 #include <sound/initval.h>
 99 #include <sound/pcm.h>
100 #include <sound/ac97_codec.h>
101 #include <sound/info.h>
102 #include <sound/tlv.h>
103 #include <sound/emu10k1.h>
104 #include "p16v.h"
105 
106 #define SET_CHANNEL 0  /* Testing channel outputs 0=Front, 1=Center/LFE, 2=Unknown, 3=Rear */
107 #define PCM_FRONT_CHANNEL 0
108 #define PCM_REAR_CHANNEL 1
109 #define PCM_CENTER_LFE_CHANNEL 2
110 #define PCM_SIDE_CHANNEL 3
111 #define CONTROL_FRONT_CHANNEL 0
112 #define CONTROL_REAR_CHANNEL 3
113 #define CONTROL_CENTER_LFE_CHANNEL 1
114 #define CONTROL_SIDE_CHANNEL 2
115 
116 /* Card IDs:
117  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:2002 -> Audigy2 ZS 7.1 Model:SB0350
118  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:1007 -> Audigy2 6.1    Model:SB0240
119  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:1002 -> Audigy2 Platinum  Model:SB msb0240230009266
120  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:2007 -> Audigy4 Pro Model:SB0380 M1SB0380472001901E
121  *
122  */
123 
124  /* hardware definition */
125 static const struct snd_pcm_hardware snd_p16v_playback_hw = {
126         .info =                 SNDRV_PCM_INFO_MMAP | 
127                                 SNDRV_PCM_INFO_INTERLEAVED |
128                                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
129                                 SNDRV_PCM_INFO_RESUME |
130                                 SNDRV_PCM_INFO_MMAP_VALID |
131                                 SNDRV_PCM_INFO_SYNC_START,
132         .formats =              SNDRV_PCM_FMTBIT_S32_LE, /* Only supports 24-bit samples padded to 32 bits. */
133         .rates =                SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100, 
134         .rate_min =             44100,
135         .rate_max =             192000,
136         .channels_min =         8, 
137         .channels_max =         8,
138         .buffer_bytes_max =     ((65536 - 64) * 8),
139         .period_bytes_min =     64,
140         .period_bytes_max =     (65536 - 64),
141         .periods_min =          2,
142         .periods_max =          8,
143         .fifo_size =            0,
144 };
145 
146 static const struct snd_pcm_hardware snd_p16v_capture_hw = {
147         .info =                 (SNDRV_PCM_INFO_MMAP |
148                                  SNDRV_PCM_INFO_INTERLEAVED |
149                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
150                                  SNDRV_PCM_INFO_RESUME |
151                                  SNDRV_PCM_INFO_MMAP_VALID),
152         .formats =              SNDRV_PCM_FMTBIT_S32_LE,
153         .rates =                SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100, 
154         .rate_min =             44100,
155         .rate_max =             192000,
156         .channels_min =         2,
157         .channels_max =         2,
158         .buffer_bytes_max =     (65536 - 64),
159         .period_bytes_min =     64,
160         .period_bytes_max =     (65536 - 128) >> 1,  /* size has to be N*64 bytes */
161         .periods_min =          2,
162         .periods_max =          2,
163         .fifo_size =            0,
164 };
165 
166 static void snd_p16v_pcm_free_substream(struct snd_pcm_runtime *runtime)
167 {
168         struct snd_emu10k1_pcm *epcm = runtime->private_data;
169 
170         kfree(epcm);
171 }
172 
173 /* open_playback callback */
174 static int snd_p16v_pcm_open_playback_channel(struct snd_pcm_substream *substream, int channel_id)
175 {
176         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
177         struct snd_emu10k1_voice *channel = &(emu->p16v_voices[channel_id]);
178         struct snd_emu10k1_pcm *epcm;
179         struct snd_pcm_runtime *runtime = substream->runtime;
180         int err;
181 
182         epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
183         /* dev_dbg(emu->card->dev, "epcm kcalloc: %p\n", epcm); */
184 
185         if (epcm == NULL)
186                 return -ENOMEM;
187         epcm->emu = emu;
188         epcm->substream = substream;
189         /*
190         dev_dbg(emu->card->dev, "epcm device=%d, channel_id=%d\n",
191                    substream->pcm->device, channel_id);
192         */
193         runtime->private_data = epcm;
194         runtime->private_free = snd_p16v_pcm_free_substream;
195   
196         runtime->hw = snd_p16v_playback_hw;
197 
198         channel->emu = emu;
199         channel->number = channel_id;
200 
201         channel->use=1;
202 #if 0 /* debug */
203         dev_dbg(emu->card->dev,
204                    "p16v: open channel_id=%d, channel=%p, use=0x%x\n",
205                    channel_id, channel, channel->use);
206         dev_dbg(emu->card->dev, "open:channel_id=%d, chip=%p, channel=%p\n",
207                channel_id, chip, channel);
208 #endif /* debug */
209         /* channel->interrupt = snd_p16v_pcm_channel_interrupt; */
210         channel->epcm = epcm;
211         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
212                 return err;
213 
214         runtime->sync.id32[0] = substream->pcm->card->number;
215         runtime->sync.id32[1] = 'P';
216         runtime->sync.id32[2] = 16;
217         runtime->sync.id32[3] = 'V';
218 
219         return 0;
220 }
221 /* open_capture callback */
222 static int snd_p16v_pcm_open_capture_channel(struct snd_pcm_substream *substream, int channel_id)
223 {
224         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
225         struct snd_emu10k1_voice *channel = &(emu->p16v_capture_voice);
226         struct snd_emu10k1_pcm *epcm;
227         struct snd_pcm_runtime *runtime = substream->runtime;
228         int err;
229 
230         epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
231         /* dev_dbg(emu->card->dev, "epcm kcalloc: %p\n", epcm); */
232 
233         if (epcm == NULL)
234                 return -ENOMEM;
235         epcm->emu = emu;
236         epcm->substream = substream;
237         /*
238         dev_dbg(emu->card->dev, "epcm device=%d, channel_id=%d\n",
239                    substream->pcm->device, channel_id);
240         */
241         runtime->private_data = epcm;
242         runtime->private_free = snd_p16v_pcm_free_substream;
243   
244         runtime->hw = snd_p16v_capture_hw;
245 
246         channel->emu = emu;
247         channel->number = channel_id;
248 
249         channel->use=1;
250 #if 0 /* debug */
251         dev_dbg(emu->card->dev,
252                    "p16v: open channel_id=%d, channel=%p, use=0x%x\n",
253                    channel_id, channel, channel->use);
254         dev_dbg(emu->card->dev, "open:channel_id=%d, chip=%p, channel=%p\n",
255                channel_id, chip, channel);
256 #endif /* debug */
257         /* channel->interrupt = snd_p16v_pcm_channel_interrupt; */
258         channel->epcm = epcm;
259         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
260                 return err;
261 
262         return 0;
263 }
264 
265 
266 /* close callback */
267 static int snd_p16v_pcm_close_playback(struct snd_pcm_substream *substream)
268 {
269         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
270         //struct snd_pcm_runtime *runtime = substream->runtime;
271         //struct snd_emu10k1_pcm *epcm = runtime->private_data;
272         emu->p16v_voices[substream->pcm->device - emu->p16v_device_offset].use = 0;
273         /* FIXME: maybe zero others */
274         return 0;
275 }
276 
277 /* close callback */
278 static int snd_p16v_pcm_close_capture(struct snd_pcm_substream *substream)
279 {
280         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
281         //struct snd_pcm_runtime *runtime = substream->runtime;
282         //struct snd_emu10k1_pcm *epcm = runtime->private_data;
283         emu->p16v_capture_voice.use = 0;
284         /* FIXME: maybe zero others */
285         return 0;
286 }
287 
288 static int snd_p16v_pcm_open_playback_front(struct snd_pcm_substream *substream)
289 {
290         return snd_p16v_pcm_open_playback_channel(substream, PCM_FRONT_CHANNEL);
291 }
292 
293 static int snd_p16v_pcm_open_capture(struct snd_pcm_substream *substream)
294 {
295         // Only using channel 0 for now, but the card has 2 channels.
296         return snd_p16v_pcm_open_capture_channel(substream, 0);
297 }
298 
299 /* hw_params callback */
300 static int snd_p16v_pcm_hw_params_playback(struct snd_pcm_substream *substream,
301                                       struct snd_pcm_hw_params *hw_params)
302 {
303         return snd_pcm_lib_malloc_pages(substream,
304                                         params_buffer_bytes(hw_params));
305 }
306 
307 /* hw_params callback */
308 static int snd_p16v_pcm_hw_params_capture(struct snd_pcm_substream *substream,
309                                       struct snd_pcm_hw_params *hw_params)
310 {
311         return snd_pcm_lib_malloc_pages(substream,
312                                         params_buffer_bytes(hw_params));
313 }
314 
315 
316 /* hw_free callback */
317 static int snd_p16v_pcm_hw_free_playback(struct snd_pcm_substream *substream)
318 {
319         return snd_pcm_lib_free_pages(substream);
320 }
321 
322 /* hw_free callback */
323 static int snd_p16v_pcm_hw_free_capture(struct snd_pcm_substream *substream)
324 {
325         return snd_pcm_lib_free_pages(substream);
326 }
327 
328 
329 /* prepare playback callback */
330 static int snd_p16v_pcm_prepare_playback(struct snd_pcm_substream *substream)
331 {
332         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
333         struct snd_pcm_runtime *runtime = substream->runtime;
334         int channel = substream->pcm->device - emu->p16v_device_offset;
335         u32 *table_base = (u32 *)(emu->p16v_buffer.area+(8*16*channel));
336         u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
337         int i;
338         u32 tmp;
339         
340 #if 0 /* debug */
341         dev_dbg(emu->card->dev,
342                 "prepare:channel_number=%d, rate=%d, "
343                    "format=0x%x, channels=%d, buffer_size=%ld, "
344                    "period_size=%ld, periods=%u, frames_to_bytes=%d\n",
345                    channel, runtime->rate, runtime->format, runtime->channels,
346                    runtime->buffer_size, runtime->period_size,
347                    runtime->periods, frames_to_bytes(runtime, 1));
348         dev_dbg(emu->card->dev,
349                 "dma_addr=%x, dma_area=%p, table_base=%p\n",
350                    runtime->dma_addr, runtime->dma_area, table_base);
351         dev_dbg(emu->card->dev,
352                 "dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",
353                    emu->p16v_buffer.addr, emu->p16v_buffer.area,
354                    emu->p16v_buffer.bytes);
355 #endif /* debug */
356         tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
357         switch (runtime->rate) {
358         case 44100:
359           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x8080);
360           break;
361         case 96000:
362           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x4040);
363           break;
364         case 192000:
365           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x2020);
366           break;
367         case 48000:
368         default:
369           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x0000);
370           break;
371         }
372         /* FIXME: Check emu->buffer.size before actually writing to it. */
373         for(i = 0; i < runtime->periods; i++) {
374                 table_base[i*2]=runtime->dma_addr+(i*period_size_bytes);
375                 table_base[(i*2)+1]=period_size_bytes<<16;
376         }
377  
378         snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_ADDR, channel, emu->p16v_buffer.addr+(8*16*channel));
379         snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19);
380         snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_PTR, channel, 0);
381         snd_emu10k1_ptr20_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr);
382         //snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes
383         snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, 0); // buffer size in bytes
384         snd_emu10k1_ptr20_write(emu, PLAYBACK_POINTER, channel, 0);
385         snd_emu10k1_ptr20_write(emu, 0x07, channel, 0x0);
386         snd_emu10k1_ptr20_write(emu, 0x08, channel, 0);
387 
388         return 0;
389 }
390 
391 /* prepare capture callback */
392 static int snd_p16v_pcm_prepare_capture(struct snd_pcm_substream *substream)
393 {
394         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
395         struct snd_pcm_runtime *runtime = substream->runtime;
396         int channel = substream->pcm->device - emu->p16v_device_offset;
397         u32 tmp;
398 
399         /*
400         dev_dbg(emu->card->dev, "prepare capture:channel_number=%d, rate=%d, "
401                "format=0x%x, channels=%d, buffer_size=%ld, period_size=%ld, "
402                "frames_to_bytes=%d\n",
403                channel, runtime->rate, runtime->format, runtime->channels,
404                runtime->buffer_size, runtime->period_size,
405                frames_to_bytes(runtime, 1));
406         */
407         tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
408         switch (runtime->rate) {
409         case 44100:
410           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0800);
411           break;
412         case 96000:
413           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0400);
414           break;
415         case 192000:
416           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0200);
417           break;
418         case 48000:
419         default:
420           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0000);
421           break;
422         }
423         /* FIXME: Check emu->buffer.size before actually writing to it. */
424         snd_emu10k1_ptr20_write(emu, 0x13, channel, 0);
425         snd_emu10k1_ptr20_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);
426         snd_emu10k1_ptr20_write(emu, CAPTURE_BUFFER_SIZE, channel, frames_to_bytes(runtime, runtime->buffer_size) << 16); // buffer size in bytes
427         snd_emu10k1_ptr20_write(emu, CAPTURE_POINTER, channel, 0);
428         //snd_emu10k1_ptr20_write(emu, CAPTURE_SOURCE, 0x0, 0x333300e4); /* Select MIC or Line in */
429         //snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) | (0x110000<<channel));
430 
431         return 0;
432 }
433 
434 static void snd_p16v_intr_enable(struct snd_emu10k1 *emu, unsigned int intrenb)
435 {
436         unsigned long flags;
437         unsigned int enable;
438 
439         spin_lock_irqsave(&emu->emu_lock, flags);
440         enable = inl(emu->port + INTE2) | intrenb;
441         outl(enable, emu->port + INTE2);
442         spin_unlock_irqrestore(&emu->emu_lock, flags);
443 }
444 
445 static void snd_p16v_intr_disable(struct snd_emu10k1 *emu, unsigned int intrenb)
446 {
447         unsigned long flags;
448         unsigned int disable;
449 
450         spin_lock_irqsave(&emu->emu_lock, flags);
451         disable = inl(emu->port + INTE2) & (~intrenb);
452         outl(disable, emu->port + INTE2);
453         spin_unlock_irqrestore(&emu->emu_lock, flags);
454 }
455 
456 /* trigger_playback callback */
457 static int snd_p16v_pcm_trigger_playback(struct snd_pcm_substream *substream,
458                                     int cmd)
459 {
460         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
461         struct snd_pcm_runtime *runtime;
462         struct snd_emu10k1_pcm *epcm;
463         int channel;
464         int result = 0;
465         struct snd_pcm_substream *s;
466         u32 basic = 0;
467         u32 inte = 0;
468         int running = 0;
469 
470         switch (cmd) {
471         case SNDRV_PCM_TRIGGER_START:
472                 running=1;
473                 break;
474         case SNDRV_PCM_TRIGGER_STOP:
475         default:
476                 running = 0;
477                 break;
478         }
479         snd_pcm_group_for_each_entry(s, substream) {
480                 if (snd_pcm_substream_chip(s) != emu ||
481                     s->stream != SNDRV_PCM_STREAM_PLAYBACK)
482                         continue;
483                 runtime = s->runtime;
484                 epcm = runtime->private_data;
485                 channel = substream->pcm->device-emu->p16v_device_offset;
486                 /* dev_dbg(emu->card->dev, "p16v channel=%d\n", channel); */
487                 epcm->running = running;
488                 basic |= (0x1<<channel);
489                 inte |= (INTE2_PLAYBACK_CH_0_LOOP<<channel);
490                 snd_pcm_trigger_done(s, substream);
491         }
492         /* dev_dbg(emu->card->dev, "basic=0x%x, inte=0x%x\n", basic, inte); */
493 
494         switch (cmd) {
495         case SNDRV_PCM_TRIGGER_START:
496                 snd_p16v_intr_enable(emu, inte);
497                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)| (basic));
498                 break;
499         case SNDRV_PCM_TRIGGER_STOP:
500                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(basic));
501                 snd_p16v_intr_disable(emu, inte);
502                 break;
503         default:
504                 result = -EINVAL;
505                 break;
506         }
507         return result;
508 }
509 
510 /* trigger_capture callback */
511 static int snd_p16v_pcm_trigger_capture(struct snd_pcm_substream *substream,
512                                    int cmd)
513 {
514         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
515         struct snd_pcm_runtime *runtime = substream->runtime;
516         struct snd_emu10k1_pcm *epcm = runtime->private_data;
517         int channel = 0;
518         int result = 0;
519         u32 inte = INTE2_CAPTURE_CH_0_LOOP | INTE2_CAPTURE_CH_0_HALF_LOOP;
520 
521         switch (cmd) {
522         case SNDRV_PCM_TRIGGER_START:
523                 snd_p16v_intr_enable(emu, inte);
524                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)|(0x100<<channel));
525                 epcm->running = 1;
526                 break;
527         case SNDRV_PCM_TRIGGER_STOP:
528                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(0x100<<channel));
529                 snd_p16v_intr_disable(emu, inte);
530                 //snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) & ~(0x110000<<channel));
531                 epcm->running = 0;
532                 break;
533         default:
534                 result = -EINVAL;
535                 break;
536         }
537         return result;
538 }
539 
540 /* pointer_playback callback */
541 static snd_pcm_uframes_t
542 snd_p16v_pcm_pointer_playback(struct snd_pcm_substream *substream)
543 {
544         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
545         struct snd_pcm_runtime *runtime = substream->runtime;
546         struct snd_emu10k1_pcm *epcm = runtime->private_data;
547         snd_pcm_uframes_t ptr, ptr1, ptr2,ptr3,ptr4 = 0;
548         int channel = substream->pcm->device - emu->p16v_device_offset;
549         if (!epcm->running)
550                 return 0;
551 
552         ptr3 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
553         ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
554         ptr4 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
555         if (ptr3 != ptr4) ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
556         ptr2 = bytes_to_frames(runtime, ptr1);
557         ptr2+= (ptr4 >> 3) * runtime->period_size;
558         ptr=ptr2;
559         if (ptr >= runtime->buffer_size)
560                 ptr -= runtime->buffer_size;
561 
562         return ptr;
563 }
564 
565 /* pointer_capture callback */
566 static snd_pcm_uframes_t
567 snd_p16v_pcm_pointer_capture(struct snd_pcm_substream *substream)
568 {
569         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
570         struct snd_pcm_runtime *runtime = substream->runtime;
571         struct snd_emu10k1_pcm *epcm = runtime->private_data;
572         snd_pcm_uframes_t ptr, ptr1, ptr2 = 0;
573         int channel = 0;
574 
575         if (!epcm->running)
576                 return 0;
577 
578         ptr1 = snd_emu10k1_ptr20_read(emu, CAPTURE_POINTER, channel);
579         ptr2 = bytes_to_frames(runtime, ptr1);
580         ptr=ptr2;
581         if (ptr >= runtime->buffer_size) {
582                 ptr -= runtime->buffer_size;
583                 dev_warn(emu->card->dev, "buffer capture limited!\n");
584         }
585         /*
586         dev_dbg(emu->card->dev, "ptr1 = 0x%lx, ptr2=0x%lx, ptr=0x%lx, "
587                "buffer_size = 0x%x, period_size = 0x%x, bits=%d, rate=%d\n",
588                ptr1, ptr2, ptr, (int)runtime->buffer_size,
589                (int)runtime->period_size, (int)runtime->frame_bits,
590                (int)runtime->rate);
591         */
592         return ptr;
593 }
594 
595 /* operators */
596 static const struct snd_pcm_ops snd_p16v_playback_front_ops = {
597         .open =        snd_p16v_pcm_open_playback_front,
598         .close =       snd_p16v_pcm_close_playback,
599         .ioctl =       snd_pcm_lib_ioctl,
600         .hw_params =   snd_p16v_pcm_hw_params_playback,
601         .hw_free =     snd_p16v_pcm_hw_free_playback,
602         .prepare =     snd_p16v_pcm_prepare_playback,
603         .trigger =     snd_p16v_pcm_trigger_playback,
604         .pointer =     snd_p16v_pcm_pointer_playback,
605 };
606 
607 static const struct snd_pcm_ops snd_p16v_capture_ops = {
608         .open =        snd_p16v_pcm_open_capture,
609         .close =       snd_p16v_pcm_close_capture,
610         .ioctl =       snd_pcm_lib_ioctl,
611         .hw_params =   snd_p16v_pcm_hw_params_capture,
612         .hw_free =     snd_p16v_pcm_hw_free_capture,
613         .prepare =     snd_p16v_pcm_prepare_capture,
614         .trigger =     snd_p16v_pcm_trigger_capture,
615         .pointer =     snd_p16v_pcm_pointer_capture,
616 };
617 
618 
619 int snd_p16v_free(struct snd_emu10k1 *chip)
620 {
621         // release the data
622         if (chip->p16v_buffer.area) {
623                 snd_dma_free_pages(&chip->p16v_buffer);
624                 /*
625                 dev_dbg(chip->card->dev, "period lables free: %p\n",
626                            &chip->p16v_buffer);
627                 */
628         }
629         return 0;
630 }
631 
632 int snd_p16v_pcm(struct snd_emu10k1 *emu, int device)
633 {
634         struct snd_pcm *pcm;
635         struct snd_pcm_substream *substream;
636         int err;
637         int capture=1;
638   
639         /* dev_dbg(emu->card->dev, "snd_p16v_pcm called. device=%d\n", device); */
640         emu->p16v_device_offset = device;
641 
642         if ((err = snd_pcm_new(emu->card, "p16v", device, 1, capture, &pcm)) < 0)
643                 return err;
644   
645         pcm->private_data = emu;
646         // Single playback 8 channel device.
647         // Single capture 2 channel device.
648         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_p16v_playback_front_ops);
649         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_p16v_capture_ops);
650 
651         pcm->info_flags = 0;
652         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
653         strcpy(pcm->name, "p16v");
654         emu->pcm_p16v = pcm;
655 
656         for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; 
657             substream; 
658             substream = substream->next) {
659                 if ((err = snd_pcm_lib_preallocate_pages(substream, 
660                                                          SNDRV_DMA_TYPE_DEV, 
661                                                          snd_dma_pci_data(emu->pci), 
662                                                          ((65536 - 64) * 8), ((65536 - 64) * 8))) < 0) 
663                         return err;
664                 /*
665                 dev_dbg(emu->card->dev,
666                            "preallocate playback substream: err=%d\n", err);
667                 */
668         }
669 
670         for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream; 
671               substream; 
672               substream = substream->next) {
673                 if ((err = snd_pcm_lib_preallocate_pages(substream, 
674                                                    SNDRV_DMA_TYPE_DEV, 
675                                                    snd_dma_pci_data(emu->pci), 
676                                                    65536 - 64, 65536 - 64)) < 0)
677                         return err;
678                 /*
679                 dev_dbg(emu->card->dev,
680                            "preallocate capture substream: err=%d\n", err);
681                 */
682         }
683   
684         return 0;
685 }
686 
687 static int snd_p16v_volume_info(struct snd_kcontrol *kcontrol,
688                                 struct snd_ctl_elem_info *uinfo)
689 {
690         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
691         uinfo->count = 2;
692         uinfo->value.integer.min = 0;
693         uinfo->value.integer.max = 255;
694         return 0;
695 }
696 
697 static int snd_p16v_volume_get(struct snd_kcontrol *kcontrol,
698                                struct snd_ctl_elem_value *ucontrol)
699 {
700         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
701         int high_low = (kcontrol->private_value >> 8) & 0xff;
702         int reg = kcontrol->private_value & 0xff;
703         u32 value;
704 
705         value = snd_emu10k1_ptr20_read(emu, reg, high_low);
706         if (high_low) {
707                 ucontrol->value.integer.value[0] = 0xff - ((value >> 24) & 0xff); /* Left */
708                 ucontrol->value.integer.value[1] = 0xff - ((value >> 16) & 0xff); /* Right */
709         } else {
710                 ucontrol->value.integer.value[0] = 0xff - ((value >> 8) & 0xff); /* Left */
711                 ucontrol->value.integer.value[1] = 0xff - ((value >> 0) & 0xff); /* Right */
712         }
713         return 0;
714 }
715 
716 static int snd_p16v_volume_put(struct snd_kcontrol *kcontrol,
717                                struct snd_ctl_elem_value *ucontrol)
718 {
719         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
720         int high_low = (kcontrol->private_value >> 8) & 0xff;
721         int reg = kcontrol->private_value & 0xff;
722         u32 value, oval;
723 
724         oval = value = snd_emu10k1_ptr20_read(emu, reg, 0);
725         if (high_low == 1) {
726                 value &= 0xffff;
727                 value |= ((0xff - ucontrol->value.integer.value[0]) << 24) |
728                         ((0xff - ucontrol->value.integer.value[1]) << 16);
729         } else {
730                 value &= 0xffff0000;
731                 value |= ((0xff - ucontrol->value.integer.value[0]) << 8) |
732                         ((0xff - ucontrol->value.integer.value[1]) );
733         }
734         if (value != oval) {
735                 snd_emu10k1_ptr20_write(emu, reg, 0, value);
736                 return 1;
737         }
738         return 0;
739 }
740 
741 static int snd_p16v_capture_source_info(struct snd_kcontrol *kcontrol,
742                                         struct snd_ctl_elem_info *uinfo)
743 {
744         static const char * const texts[8] = {
745                 "SPDIF", "I2S", "SRC48", "SRCMulti_SPDIF", "SRCMulti_I2S",
746                 "CDIF", "FX", "AC97"
747         };
748 
749         return snd_ctl_enum_info(uinfo, 1, 8, texts);
750 }
751 
752 static int snd_p16v_capture_source_get(struct snd_kcontrol *kcontrol,
753                                         struct snd_ctl_elem_value *ucontrol)
754 {
755         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
756 
757         ucontrol->value.enumerated.item[0] = emu->p16v_capture_source;
758         return 0;
759 }
760 
761 static int snd_p16v_capture_source_put(struct snd_kcontrol *kcontrol,
762                                         struct snd_ctl_elem_value *ucontrol)
763 {
764         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
765         unsigned int val;
766         int change = 0;
767         u32 mask;
768         u32 source;
769 
770         val = ucontrol->value.enumerated.item[0] ;
771         if (val > 7)
772                 return -EINVAL;
773         change = (emu->p16v_capture_source != val);
774         if (change) {
775                 emu->p16v_capture_source = val;
776                 source = (val << 28) | (val << 24) | (val << 20) | (val << 16);
777                 mask = snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & 0xffff;
778                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, source | mask);
779         }
780         return change;
781 }
782 
783 static int snd_p16v_capture_channel_info(struct snd_kcontrol *kcontrol,
784                                          struct snd_ctl_elem_info *uinfo)
785 {
786         static const char * const texts[4] = { "", "1", "2", "3", };
787 
788         return snd_ctl_enum_info(uinfo, 1, 4, texts);
789 }
790 
791 static int snd_p16v_capture_channel_get(struct snd_kcontrol *kcontrol,
792                                         struct snd_ctl_elem_value *ucontrol)
793 {
794         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
795 
796         ucontrol->value.enumerated.item[0] = emu->p16v_capture_channel;
797         return 0;
798 }
799 
800 static int snd_p16v_capture_channel_put(struct snd_kcontrol *kcontrol,
801                                         struct snd_ctl_elem_value *ucontrol)
802 {
803         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
804         unsigned int val;
805         int change = 0;
806         u32 tmp;
807 
808         val = ucontrol->value.enumerated.item[0] ;
809         if (val > 3)
810                 return -EINVAL;
811         change = (emu->p16v_capture_channel != val);
812         if (change) {
813                 emu->p16v_capture_channel = val;
814                 tmp = snd_emu10k1_ptr20_read(emu, CAPTURE_P16V_SOURCE, 0) & 0xfffc;
815                 snd_emu10k1_ptr20_write(emu, CAPTURE_P16V_SOURCE, 0, tmp | val);
816         }
817         return change;
818 }
819 static const DECLARE_TLV_DB_SCALE(snd_p16v_db_scale1, -5175, 25, 1);
820 
821 #define P16V_VOL(xname,xreg,xhl) { \
822         .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
823         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |             \
824                   SNDRV_CTL_ELEM_ACCESS_TLV_READ,               \
825         .info = snd_p16v_volume_info, \
826         .get = snd_p16v_volume_get, \
827         .put = snd_p16v_volume_put, \
828         .tlv = { .p = snd_p16v_db_scale1 },     \
829         .private_value = ((xreg) | ((xhl) << 8)) \
830 }
831 
832 static struct snd_kcontrol_new p16v_mixer_controls[] = {
833         P16V_VOL("HD Analog Front Playback Volume", PLAYBACK_VOLUME_MIXER9, 0),
834         P16V_VOL("HD Analog Rear Playback Volume", PLAYBACK_VOLUME_MIXER10, 1),
835         P16V_VOL("HD Analog Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER9, 1),
836         P16V_VOL("HD Analog Side Playback Volume", PLAYBACK_VOLUME_MIXER10, 0),
837         P16V_VOL("HD SPDIF Front Playback Volume", PLAYBACK_VOLUME_MIXER7, 0),
838         P16V_VOL("HD SPDIF Rear Playback Volume", PLAYBACK_VOLUME_MIXER8, 1),
839         P16V_VOL("HD SPDIF Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER7, 1),
840         P16V_VOL("HD SPDIF Side Playback Volume", PLAYBACK_VOLUME_MIXER8, 0),
841         {
842                 .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
843                 .name =         "HD source Capture",
844                 .info =         snd_p16v_capture_source_info,
845                 .get =          snd_p16v_capture_source_get,
846                 .put =          snd_p16v_capture_source_put
847         },
848         {
849                 .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
850                 .name =         "HD channel Capture",
851                 .info =         snd_p16v_capture_channel_info,
852                 .get =          snd_p16v_capture_channel_get,
853                 .put =          snd_p16v_capture_channel_put
854         },
855 };
856 
857 
858 int snd_p16v_mixer(struct snd_emu10k1 *emu)
859 {
860         int i, err;
861         struct snd_card *card = emu->card;
862 
863         for (i = 0; i < ARRAY_SIZE(p16v_mixer_controls); i++) {
864                 if ((err = snd_ctl_add(card, snd_ctl_new1(&p16v_mixer_controls[i],
865                                                           emu))) < 0)
866                         return err;
867         }
868         return 0;
869 }
870 
871 #ifdef CONFIG_PM_SLEEP
872 
873 #define NUM_CHS 1       /* up to 4, but only first channel is used */
874 
875 int snd_p16v_alloc_pm_buffer(struct snd_emu10k1 *emu)
876 {
877         emu->p16v_saved = vmalloc(array_size(NUM_CHS * 4, 0x80));
878         if (! emu->p16v_saved)
879                 return -ENOMEM;
880         return 0;
881 }
882 
883 void snd_p16v_free_pm_buffer(struct snd_emu10k1 *emu)
884 {
885         vfree(emu->p16v_saved);
886 }
887 
888 void snd_p16v_suspend(struct snd_emu10k1 *emu)
889 {
890         int i, ch;
891         unsigned int *val;
892 
893         val = emu->p16v_saved;
894         for (ch = 0; ch < NUM_CHS; ch++)
895                 for (i = 0; i < 0x80; i++, val++)
896                         *val = snd_emu10k1_ptr20_read(emu, i, ch);
897 }
898 
899 void snd_p16v_resume(struct snd_emu10k1 *emu)
900 {
901         int i, ch;
902         unsigned int *val;
903 
904         val = emu->p16v_saved;
905         for (ch = 0; ch < NUM_CHS; ch++)
906                 for (i = 0; i < 0x80; i++, val++)
907                         snd_emu10k1_ptr20_write(emu, i, ch, *val);
908 }
909 #endif
910 

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