[ALSA] emu10k1 - Add PM support
[linux-2.6.git] / sound / pci / emu10k1 / p16v.c
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 initally 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 <sound/driver.h>
91 #include <linux/delay.h>
92 #include <linux/init.h>
93 #include <linux/interrupt.h>
94 #include <linux/pci.h>
95 #include <linux/slab.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/emu10k1.h>
103 #include "p16v.h"
104
105 #define SET_CHANNEL 0  /* Testing channel outputs 0=Front, 1=Center/LFE, 2=Unknown, 3=Rear */
106 #define PCM_FRONT_CHANNEL 0
107 #define PCM_REAR_CHANNEL 1
108 #define PCM_CENTER_LFE_CHANNEL 2
109 #define PCM_UNKNOWN_CHANNEL 3
110 #define CONTROL_FRONT_CHANNEL 0
111 #define CONTROL_REAR_CHANNEL 3
112 #define CONTROL_CENTER_LFE_CHANNEL 1
113 #define CONTROL_UNKNOWN_CHANNEL 2
114
115 /* Card IDs:
116  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:2002 -> Audigy2 ZS 7.1 Model:SB0350
117  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:1007 -> Audigy2 6.1    Model:SB0240
118  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:1002 -> Audigy2 Platinum  Model:SB msb0240230009266
119  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:2007 -> Audigy4 Pro Model:SB0380 M1SB0380472001901E
120  *
121  */
122
123  /* hardware definition */
124 static struct snd_pcm_hardware snd_p16v_playback_hw = {
125         .info =                 (SNDRV_PCM_INFO_MMAP | 
126                                  SNDRV_PCM_INFO_INTERLEAVED |
127                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
128                                  SNDRV_PCM_INFO_RESUME |
129                                  SNDRV_PCM_INFO_MMAP_VALID),
130         .formats =              SNDRV_PCM_FMTBIT_S32_LE, /* Only supports 24-bit samples padded to 32 bits. */
131         .rates =                SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100, 
132         .rate_min =             44100,
133         .rate_max =             192000,
134         .channels_min =         8, 
135         .channels_max =         8,
136         .buffer_bytes_max =     ((65536 - 64) * 8),
137         .period_bytes_min =     64,
138         .period_bytes_max =     (65536 - 64),
139         .periods_min =          2,
140         .periods_max =          8,
141         .fifo_size =            0,
142 };
143
144 static struct snd_pcm_hardware snd_p16v_capture_hw = {
145         .info =                 (SNDRV_PCM_INFO_MMAP |
146                                  SNDRV_PCM_INFO_INTERLEAVED |
147                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
148                                  SNDRV_PCM_INFO_RESUME |
149                                  SNDRV_PCM_INFO_MMAP_VALID),
150         .formats =              SNDRV_PCM_FMTBIT_S32_LE,
151         .rates =                SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100, 
152         .rate_min =             44100,
153         .rate_max =             192000,
154         .channels_min =         2,
155         .channels_max =         2,
156         .buffer_bytes_max =     (65536 - 64),
157         .period_bytes_min =     64,
158         .period_bytes_max =     (65536 - 128) >> 1,  /* size has to be N*64 bytes */
159         .periods_min =          2,
160         .periods_max =          2,
161         .fifo_size =            0,
162 };
163
164 static void snd_p16v_pcm_free_substream(struct snd_pcm_runtime *runtime)
165 {
166         struct snd_emu10k1_pcm *epcm = runtime->private_data;
167   
168         if (epcm) {
169                 //snd_printk("epcm free: %p\n", epcm);
170                 kfree(epcm);
171         }
172 }
173
174 /* open_playback callback */
175 static int snd_p16v_pcm_open_playback_channel(struct snd_pcm_substream *substream, int channel_id)
176 {
177         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
178         struct snd_emu10k1_voice *channel = &(emu->p16v_voices[channel_id]);
179         struct snd_emu10k1_pcm *epcm;
180         struct snd_pcm_runtime *runtime = substream->runtime;
181         int err;
182
183         epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
184         //snd_printk("epcm kcalloc: %p\n", epcm);
185
186         if (epcm == NULL)
187                 return -ENOMEM;
188         epcm->emu = emu;
189         epcm->substream = substream;
190         //snd_printk("epcm device=%d, channel_id=%d\n", substream->pcm->device, channel_id);
191   
192         runtime->private_data = epcm;
193         runtime->private_free = snd_p16v_pcm_free_substream;
194   
195         runtime->hw = snd_p16v_playback_hw;
196
197         channel->emu = emu;
198         channel->number = channel_id;
199
200         channel->use=1;
201         //snd_printk("p16v: open channel_id=%d, channel=%p, use=0x%x\n", channel_id, channel, channel->use);
202         //printk("open:channel_id=%d, chip=%p, channel=%p\n",channel_id, chip, channel);
203         //channel->interrupt = snd_p16v_pcm_channel_interrupt;
204         channel->epcm=epcm;
205         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
206                 return err;
207
208         return 0;
209 }
210 /* open_capture callback */
211 static int snd_p16v_pcm_open_capture_channel(struct snd_pcm_substream *substream, int channel_id)
212 {
213         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
214         struct snd_emu10k1_voice *channel = &(emu->p16v_capture_voice);
215         struct snd_emu10k1_pcm *epcm;
216         struct snd_pcm_runtime *runtime = substream->runtime;
217         int err;
218
219         epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
220         //snd_printk("epcm kcalloc: %p\n", epcm);
221
222         if (epcm == NULL)
223                 return -ENOMEM;
224         epcm->emu = emu;
225         epcm->substream = substream;
226         //snd_printk("epcm device=%d, channel_id=%d\n", substream->pcm->device, channel_id);
227
228         runtime->private_data = epcm;
229         runtime->private_free = snd_p16v_pcm_free_substream;
230   
231         runtime->hw = snd_p16v_capture_hw;
232
233         channel->emu = emu;
234         channel->number = channel_id;
235
236         channel->use=1;
237         //snd_printk("p16v: open channel_id=%d, channel=%p, use=0x%x\n", channel_id, channel, channel->use);
238         //printk("open:channel_id=%d, chip=%p, channel=%p\n",channel_id, chip, channel);
239         //channel->interrupt = snd_p16v_pcm_channel_interrupt;
240         channel->epcm=epcm;
241         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
242                 return err;
243
244         return 0;
245 }
246
247
248 /* close callback */
249 static int snd_p16v_pcm_close_playback(struct snd_pcm_substream *substream)
250 {
251         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
252         //struct snd_pcm_runtime *runtime = substream->runtime;
253         //struct snd_emu10k1_pcm *epcm = runtime->private_data;
254         emu->p16v_voices[substream->pcm->device - emu->p16v_device_offset].use=0;
255         /* FIXME: maybe zero others */
256         return 0;
257 }
258
259 /* close callback */
260 static int snd_p16v_pcm_close_capture(struct snd_pcm_substream *substream)
261 {
262         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
263         //struct snd_pcm_runtime *runtime = substream->runtime;
264         //struct snd_emu10k1_pcm *epcm = runtime->private_data;
265         emu->p16v_capture_voice.use=0;
266         /* FIXME: maybe zero others */
267         return 0;
268 }
269
270 static int snd_p16v_pcm_open_playback_front(struct snd_pcm_substream *substream)
271 {
272         return snd_p16v_pcm_open_playback_channel(substream, PCM_FRONT_CHANNEL);
273 }
274
275 static int snd_p16v_pcm_open_capture(struct snd_pcm_substream *substream)
276 {
277         // Only using channel 0 for now, but the card has 2 channels.
278         return snd_p16v_pcm_open_capture_channel(substream, 0);
279 }
280
281 /* hw_params callback */
282 static int snd_p16v_pcm_hw_params_playback(struct snd_pcm_substream *substream,
283                                       struct snd_pcm_hw_params *hw_params)
284 {
285         int result;
286         result = snd_pcm_lib_malloc_pages(substream,
287                                         params_buffer_bytes(hw_params));
288         return result;
289 }
290
291 /* hw_params callback */
292 static int snd_p16v_pcm_hw_params_capture(struct snd_pcm_substream *substream,
293                                       struct snd_pcm_hw_params *hw_params)
294 {
295         int result;
296         result = snd_pcm_lib_malloc_pages(substream,
297                                         params_buffer_bytes(hw_params));
298         return result;
299 }
300
301
302 /* hw_free callback */
303 static int snd_p16v_pcm_hw_free_playback(struct snd_pcm_substream *substream)
304 {
305         int result;
306         result = snd_pcm_lib_free_pages(substream);
307         return result;
308 }
309
310 /* hw_free callback */
311 static int snd_p16v_pcm_hw_free_capture(struct snd_pcm_substream *substream)
312 {
313         int result;
314         result = snd_pcm_lib_free_pages(substream);
315         return result;
316 }
317
318
319 /* prepare playback callback */
320 static int snd_p16v_pcm_prepare_playback(struct snd_pcm_substream *substream)
321 {
322         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
323         struct snd_pcm_runtime *runtime = substream->runtime;
324         int channel = substream->pcm->device - emu->p16v_device_offset;
325         u32 *table_base = (u32 *)(emu->p16v_buffer.area+(8*16*channel));
326         u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
327         int i;
328         u32 tmp;
329         
330         //snd_printk("prepare:channel_number=%d, rate=%d, format=0x%x, channels=%d, buffer_size=%ld, period_size=%ld, periods=%u, frames_to_bytes=%d\n",channel, runtime->rate, runtime->format, runtime->channels, runtime->buffer_size, runtime->period_size, runtime->periods, frames_to_bytes(runtime, 1));
331         //snd_printk("dma_addr=%x, dma_area=%p, table_base=%p\n",runtime->dma_addr, runtime->dma_area, table_base);
332         //snd_printk("dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",emu->p16v_buffer.addr, emu->p16v_buffer.area, emu->p16v_buffer.bytes);
333         tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
334         switch (runtime->rate) {
335         case 44100:
336           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x8080);
337           break;
338         case 96000:
339           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x4040);
340           break;
341         case 192000:
342           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x2020);
343           break;
344         case 48000:
345         default:
346           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x0000);
347           break;
348         }
349         /* FIXME: Check emu->buffer.size before actually writing to it. */
350         for(i=0; i < runtime->periods; i++) {
351                 table_base[i*2]=runtime->dma_addr+(i*period_size_bytes);
352                 table_base[(i*2)+1]=period_size_bytes<<16;
353         }
354  
355         snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_ADDR, channel, emu->p16v_buffer.addr+(8*16*channel));
356         snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19);
357         snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_PTR, channel, 0);
358         snd_emu10k1_ptr20_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr);
359         //snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes
360         snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, 0); // buffer size in bytes
361         snd_emu10k1_ptr20_write(emu, PLAYBACK_POINTER, channel, 0);
362         snd_emu10k1_ptr20_write(emu, 0x07, channel, 0x0);
363         snd_emu10k1_ptr20_write(emu, 0x08, channel, 0);
364
365         return 0;
366 }
367
368 /* prepare capture callback */
369 static int snd_p16v_pcm_prepare_capture(struct snd_pcm_substream *substream)
370 {
371         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
372         struct snd_pcm_runtime *runtime = substream->runtime;
373         int channel = substream->pcm->device - emu->p16v_device_offset;
374         u32 tmp;
375         //printk("prepare capture:channel_number=%d, rate=%d, format=0x%x, channels=%d, buffer_size=%ld, period_size=%ld, frames_to_bytes=%d\n",channel, runtime->rate, runtime->format, runtime->channels, runtime->buffer_size, runtime->period_size,  frames_to_bytes(runtime, 1));
376         tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
377         switch (runtime->rate) {
378         case 44100:
379           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0800);
380           break;
381         case 96000:
382           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0400);
383           break;
384         case 192000:
385           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0200);
386           break;
387         case 48000:
388         default:
389           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0000);
390           break;
391         }
392         /* FIXME: Check emu->buffer.size before actually writing to it. */
393         snd_emu10k1_ptr20_write(emu, 0x13, channel, 0);
394         snd_emu10k1_ptr20_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);
395         snd_emu10k1_ptr20_write(emu, CAPTURE_BUFFER_SIZE, channel, frames_to_bytes(runtime, runtime->buffer_size)<<16); // buffer size in bytes
396         snd_emu10k1_ptr20_write(emu, CAPTURE_POINTER, channel, 0);
397         //snd_emu10k1_ptr20_write(emu, CAPTURE_SOURCE, 0x0, 0x333300e4); /* Select MIC or Line in */
398         //snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) | (0x110000<<channel));
399
400         return 0;
401 }
402
403 static void snd_p16v_intr_enable(struct snd_emu10k1 *emu, unsigned int intrenb)
404 {
405         unsigned long flags;
406         unsigned int enable;
407
408         spin_lock_irqsave(&emu->emu_lock, flags);
409         enable = inl(emu->port + INTE2) | intrenb;
410         outl(enable, emu->port + INTE2);
411         spin_unlock_irqrestore(&emu->emu_lock, flags);
412 }
413
414 static void snd_p16v_intr_disable(struct snd_emu10k1 *emu, unsigned int intrenb)
415 {
416         unsigned long flags;
417         unsigned int disable;
418
419         spin_lock_irqsave(&emu->emu_lock, flags);
420         disable = inl(emu->port + INTE2) & (~intrenb);
421         outl(disable, emu->port + INTE2);
422         spin_unlock_irqrestore(&emu->emu_lock, flags);
423 }
424
425 /* trigger_playback callback */
426 static int snd_p16v_pcm_trigger_playback(struct snd_pcm_substream *substream,
427                                     int cmd)
428 {
429         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
430         struct snd_pcm_runtime *runtime;
431         struct snd_emu10k1_pcm *epcm;
432         int channel;
433         int result = 0;
434         struct list_head *pos;
435         struct snd_pcm_substream *s;
436         u32 basic = 0;
437         u32 inte = 0;
438         int running=0;
439
440         switch (cmd) {
441         case SNDRV_PCM_TRIGGER_START:
442                 running=1;
443                 break;
444         case SNDRV_PCM_TRIGGER_STOP:
445         default:
446                 running=0;
447                 break;
448         }
449         snd_pcm_group_for_each(pos, substream) {
450                 s = snd_pcm_group_substream_entry(pos);
451                 runtime = s->runtime;
452                 epcm = runtime->private_data;
453                 channel = substream->pcm->device-emu->p16v_device_offset;
454                 //snd_printk("p16v channel=%d\n",channel);
455                 epcm->running = running;
456                 basic |= (0x1<<channel);
457                 inte |= (INTE2_PLAYBACK_CH_0_LOOP<<channel);
458                 snd_pcm_trigger_done(s, substream);
459         }
460         //snd_printk("basic=0x%x, inte=0x%x\n",basic, inte);
461
462         switch (cmd) {
463         case SNDRV_PCM_TRIGGER_START:
464                 snd_p16v_intr_enable(emu, inte);
465                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)| (basic));
466                 break;
467         case SNDRV_PCM_TRIGGER_STOP:
468                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(basic));
469                 snd_p16v_intr_disable(emu, inte);
470                 break;
471         default:
472                 result = -EINVAL;
473                 break;
474         }
475         return result;
476 }
477
478 /* trigger_capture callback */
479 static int snd_p16v_pcm_trigger_capture(struct snd_pcm_substream *substream,
480                                    int cmd)
481 {
482         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
483         struct snd_pcm_runtime *runtime = substream->runtime;
484         struct snd_emu10k1_pcm *epcm = runtime->private_data;
485         int channel = 0;
486         int result = 0;
487         u32 inte = INTE2_CAPTURE_CH_0_LOOP | INTE2_CAPTURE_CH_0_HALF_LOOP;
488
489         switch (cmd) {
490         case SNDRV_PCM_TRIGGER_START:
491                 snd_p16v_intr_enable(emu, inte);
492                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)|(0x100<<channel));
493                 epcm->running = 1;
494                 break;
495         case SNDRV_PCM_TRIGGER_STOP:
496                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(0x100<<channel));
497                 snd_p16v_intr_disable(emu, inte);
498                 //snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) & ~(0x110000<<channel));
499                 epcm->running = 0;
500                 break;
501         default:
502                 result = -EINVAL;
503                 break;
504         }
505         return result;
506 }
507
508 /* pointer_playback callback */
509 static snd_pcm_uframes_t
510 snd_p16v_pcm_pointer_playback(struct snd_pcm_substream *substream)
511 {
512         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
513         struct snd_pcm_runtime *runtime = substream->runtime;
514         struct snd_emu10k1_pcm *epcm = runtime->private_data;
515         snd_pcm_uframes_t ptr, ptr1, ptr2,ptr3,ptr4 = 0;
516         int channel = substream->pcm->device - emu->p16v_device_offset;
517         if (!epcm->running)
518                 return 0;
519
520         ptr3 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
521         ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
522         ptr4 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
523         if (ptr3 != ptr4) ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
524         ptr2 = bytes_to_frames(runtime, ptr1);
525         ptr2+= (ptr4 >> 3) * runtime->period_size;
526         ptr=ptr2;
527         if (ptr >= runtime->buffer_size)
528                 ptr -= runtime->buffer_size;
529
530         return ptr;
531 }
532
533 /* pointer_capture callback */
534 static snd_pcm_uframes_t
535 snd_p16v_pcm_pointer_capture(struct snd_pcm_substream *substream)
536 {
537         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
538         struct snd_pcm_runtime *runtime = substream->runtime;
539         struct snd_emu10k1_pcm *epcm = runtime->private_data;
540         snd_pcm_uframes_t ptr, ptr1, ptr2 = 0;
541         int channel = 0;
542
543         if (!epcm->running)
544                 return 0;
545
546         ptr1 = snd_emu10k1_ptr20_read(emu, CAPTURE_POINTER, channel);
547         ptr2 = bytes_to_frames(runtime, ptr1);
548         ptr=ptr2;
549         if (ptr >= runtime->buffer_size) {
550                 ptr -= runtime->buffer_size;
551                 printk(KERN_WARNING "buffer capture limited!\n");
552         }
553         //printk("ptr1 = 0x%lx, ptr2=0x%lx, ptr=0x%lx, buffer_size = 0x%x, period_size = 0x%x, bits=%d, rate=%d\n", ptr1, ptr2, ptr, (int)runtime->buffer_size, (int)runtime->period_size, (int)runtime->frame_bits, (int)runtime->rate);
554
555         return ptr;
556 }
557
558 /* operators */
559 static struct snd_pcm_ops snd_p16v_playback_front_ops = {
560         .open =        snd_p16v_pcm_open_playback_front,
561         .close =       snd_p16v_pcm_close_playback,
562         .ioctl =       snd_pcm_lib_ioctl,
563         .hw_params =   snd_p16v_pcm_hw_params_playback,
564         .hw_free =     snd_p16v_pcm_hw_free_playback,
565         .prepare =     snd_p16v_pcm_prepare_playback,
566         .trigger =     snd_p16v_pcm_trigger_playback,
567         .pointer =     snd_p16v_pcm_pointer_playback,
568 };
569
570 static struct snd_pcm_ops snd_p16v_capture_ops = {
571         .open =        snd_p16v_pcm_open_capture,
572         .close =       snd_p16v_pcm_close_capture,
573         .ioctl =       snd_pcm_lib_ioctl,
574         .hw_params =   snd_p16v_pcm_hw_params_capture,
575         .hw_free =     snd_p16v_pcm_hw_free_capture,
576         .prepare =     snd_p16v_pcm_prepare_capture,
577         .trigger =     snd_p16v_pcm_trigger_capture,
578         .pointer =     snd_p16v_pcm_pointer_capture,
579 };
580
581
582 int snd_p16v_free(struct snd_emu10k1 *chip)
583 {
584         // release the data
585         if (chip->p16v_buffer.area) {
586                 snd_dma_free_pages(&chip->p16v_buffer);
587                 //snd_printk("period lables free: %p\n", &chip->p16v_buffer);
588         }
589         return 0;
590 }
591
592 int snd_p16v_pcm(struct snd_emu10k1 *emu, int device, struct snd_pcm **rpcm)
593 {
594         struct snd_pcm *pcm;
595         struct snd_pcm_substream *substream;
596         int err;
597         int capture=1;
598   
599         //snd_printk("snd_p16v_pcm called. device=%d\n", device);
600         emu->p16v_device_offset = device;
601         if (rpcm)
602                 *rpcm = NULL;
603
604         if ((err = snd_pcm_new(emu->card, "p16v", device, 1, capture, &pcm)) < 0)
605                 return err;
606   
607         pcm->private_data = emu;
608         // Single playback 8 channel device.
609         // Single capture 2 channel device.
610         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_p16v_playback_front_ops);
611         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_p16v_capture_ops);
612
613         pcm->info_flags = 0;
614         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
615         strcpy(pcm->name, "p16v");
616         emu->pcm_p16v = pcm;
617
618         for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; 
619             substream; 
620             substream = substream->next) {
621                 if ((err = snd_pcm_lib_preallocate_pages(substream, 
622                                                          SNDRV_DMA_TYPE_DEV, 
623                                                          snd_dma_pci_data(emu->pci), 
624                                                          ((65536 - 64) * 8), ((65536 - 64) * 8))) < 0) 
625                         return err;
626                 //snd_printk("preallocate playback substream: err=%d\n", err);
627         }
628
629         for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream; 
630               substream; 
631               substream = substream->next) {
632                 if ((err = snd_pcm_lib_preallocate_pages(substream, 
633                                                    SNDRV_DMA_TYPE_DEV, 
634                                                    snd_dma_pci_data(emu->pci), 
635                                                    65536 - 64, 65536 - 64)) < 0)
636                         return err;
637                 //snd_printk("preallocate capture substream: err=%d\n", err);
638         }
639   
640         if (rpcm)
641                 *rpcm = pcm;
642   
643         return 0;
644 }
645
646 static int snd_p16v_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
647 {
648         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
649         uinfo->count = 2;
650         uinfo->value.integer.min = 0;
651         uinfo->value.integer.max = 255;
652         return 0;
653 }
654
655 static int snd_p16v_volume_get(struct snd_kcontrol *kcontrol,
656                                        struct snd_ctl_elem_value *ucontrol, int reg, int high_low)
657 {
658         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
659         u32 value;
660
661         value = snd_emu10k1_ptr20_read(emu, reg, high_low);
662         if (high_low == 1) {
663                 ucontrol->value.integer.value[0] = 0xff - ((value >> 24) & 0xff); /* Left */
664                 ucontrol->value.integer.value[1] = 0xff - ((value >> 16) & 0xff); /* Right */
665         } else {
666                 ucontrol->value.integer.value[0] = 0xff - ((value >> 8) & 0xff); /* Left */
667                 ucontrol->value.integer.value[1] = 0xff - ((value >> 0) & 0xff); /* Right */
668         }
669         return 0;
670 }
671
672 static int snd_p16v_volume_get_spdif_front(struct snd_kcontrol *kcontrol,
673                                        struct snd_ctl_elem_value *ucontrol)
674 {
675         int high_low = 0;
676         int reg = PLAYBACK_VOLUME_MIXER7;
677         return snd_p16v_volume_get(kcontrol, ucontrol, reg, high_low);
678 }
679
680 static int snd_p16v_volume_get_spdif_center_lfe(struct snd_kcontrol *kcontrol,
681                                        struct snd_ctl_elem_value *ucontrol)
682 {
683         int high_low = 1;
684         int reg = PLAYBACK_VOLUME_MIXER7;
685         return snd_p16v_volume_get(kcontrol, ucontrol, reg, high_low);
686 }
687 static int snd_p16v_volume_get_spdif_unknown(struct snd_kcontrol *kcontrol,
688                                        struct snd_ctl_elem_value *ucontrol)
689 {
690         int high_low = 0;
691         int reg = PLAYBACK_VOLUME_MIXER8;
692         return snd_p16v_volume_get(kcontrol, ucontrol, reg, high_low);
693 }
694 static int snd_p16v_volume_get_spdif_rear(struct snd_kcontrol *kcontrol,
695                                        struct snd_ctl_elem_value *ucontrol)
696 {
697         int high_low = 1;
698         int reg = PLAYBACK_VOLUME_MIXER8;
699         return snd_p16v_volume_get(kcontrol, ucontrol, reg, high_low);
700 }
701
702 static int snd_p16v_volume_get_analog_front(struct snd_kcontrol *kcontrol,
703                                        struct snd_ctl_elem_value *ucontrol)
704 {
705         int high_low = 0;
706         int reg = PLAYBACK_VOLUME_MIXER9;
707         return snd_p16v_volume_get(kcontrol, ucontrol, reg, high_low);
708 }
709
710 static int snd_p16v_volume_get_analog_center_lfe(struct snd_kcontrol *kcontrol,
711                                        struct snd_ctl_elem_value *ucontrol)
712 {
713         int high_low = 1;
714         int reg = PLAYBACK_VOLUME_MIXER9;
715         return snd_p16v_volume_get(kcontrol, ucontrol, reg, high_low);
716 }
717 static int snd_p16v_volume_get_analog_rear(struct snd_kcontrol *kcontrol,
718                                        struct snd_ctl_elem_value *ucontrol)
719 {
720         int high_low = 1;
721         int reg = PLAYBACK_VOLUME_MIXER10;
722         return snd_p16v_volume_get(kcontrol, ucontrol, reg, high_low);
723 }
724
725 static int snd_p16v_volume_get_analog_unknown(struct snd_kcontrol *kcontrol,
726                                        struct snd_ctl_elem_value *ucontrol)
727 {
728         int high_low = 0;
729         int reg = PLAYBACK_VOLUME_MIXER10;
730         return snd_p16v_volume_get(kcontrol, ucontrol, reg, high_low);
731 }
732
733 static int snd_p16v_volume_put(struct snd_kcontrol *kcontrol,
734                                        struct snd_ctl_elem_value *ucontrol, int reg, int high_low)
735 {
736         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
737         u32 value;
738         value = snd_emu10k1_ptr20_read(emu, reg, 0);
739         //value = value & 0xffff;
740         if (high_low == 1) {
741                 value &= 0xffff;
742                 value = value | ((0xff - ucontrol->value.integer.value[0]) << 24) | ((0xff - ucontrol->value.integer.value[1]) << 16);
743         } else {
744                 value &= 0xffff0000;
745                 value = value | ((0xff - ucontrol->value.integer.value[0]) << 8) | ((0xff - ucontrol->value.integer.value[1]) );
746         }
747                 snd_emu10k1_ptr20_write(emu, reg, 0, value);
748         return 1;
749 }
750
751 static int snd_p16v_volume_put_spdif_front(struct snd_kcontrol *kcontrol,
752                                        struct snd_ctl_elem_value *ucontrol)
753 {
754         int high_low = 0;
755         int reg = PLAYBACK_VOLUME_MIXER7;
756         return snd_p16v_volume_put(kcontrol, ucontrol, reg, high_low);
757 }
758
759 static int snd_p16v_volume_put_spdif_center_lfe(struct snd_kcontrol *kcontrol,
760                                        struct snd_ctl_elem_value *ucontrol)
761 {
762         int high_low = 1;
763         int reg = PLAYBACK_VOLUME_MIXER7;
764         return snd_p16v_volume_put(kcontrol, ucontrol, reg, high_low);
765 }
766
767 static int snd_p16v_volume_put_spdif_unknown(struct snd_kcontrol *kcontrol,
768                                        struct snd_ctl_elem_value *ucontrol)
769 {
770         int high_low = 0;
771         int reg = PLAYBACK_VOLUME_MIXER8;
772         return snd_p16v_volume_put(kcontrol, ucontrol, reg, high_low);
773 }
774
775 static int snd_p16v_volume_put_spdif_rear(struct snd_kcontrol *kcontrol,
776                                        struct snd_ctl_elem_value *ucontrol)
777 {
778         int high_low = 1;
779         int reg = PLAYBACK_VOLUME_MIXER8;
780         return snd_p16v_volume_put(kcontrol, ucontrol, reg, high_low);
781 }
782
783 static int snd_p16v_volume_put_analog_front(struct snd_kcontrol *kcontrol,
784                                        struct snd_ctl_elem_value *ucontrol)
785 {
786         int high_low = 0;
787         int reg = PLAYBACK_VOLUME_MIXER9;
788         return snd_p16v_volume_put(kcontrol, ucontrol, reg, high_low);
789 }
790
791 static int snd_p16v_volume_put_analog_center_lfe(struct snd_kcontrol *kcontrol,
792                                        struct snd_ctl_elem_value *ucontrol)
793 {
794         int high_low = 1;
795         int reg = PLAYBACK_VOLUME_MIXER9;
796         return snd_p16v_volume_put(kcontrol, ucontrol, reg, high_low);
797 }
798
799 static int snd_p16v_volume_put_analog_rear(struct snd_kcontrol *kcontrol,
800                                        struct snd_ctl_elem_value *ucontrol)
801 {
802         int high_low = 1;
803         int reg = PLAYBACK_VOLUME_MIXER10;
804         return snd_p16v_volume_put(kcontrol, ucontrol, reg, high_low);
805 }
806
807 static int snd_p16v_volume_put_analog_unknown(struct snd_kcontrol *kcontrol,
808                                        struct snd_ctl_elem_value *ucontrol)
809 {
810         int high_low = 0;
811         int reg = PLAYBACK_VOLUME_MIXER10;
812         return snd_p16v_volume_put(kcontrol, ucontrol, reg, high_low);
813 }
814
815 static struct snd_kcontrol_new snd_p16v_volume_control_analog_front =
816 {
817         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
818         .name =         "HD Analog Front Playback Volume",
819         .info =         snd_p16v_volume_info,
820         .get =          snd_p16v_volume_get_analog_front,
821         .put =          snd_p16v_volume_put_analog_front
822 };
823
824 static struct snd_kcontrol_new snd_p16v_volume_control_analog_center_lfe =
825 {
826         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
827         .name =         "HD Analog Center/LFE Playback Volume",
828         .info =         snd_p16v_volume_info,
829         .get =          snd_p16v_volume_get_analog_center_lfe,
830         .put =          snd_p16v_volume_put_analog_center_lfe
831 };
832
833 static struct snd_kcontrol_new snd_p16v_volume_control_analog_unknown =
834 {
835         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
836         .name =         "HD Analog Unknown Playback Volume",
837         .info =         snd_p16v_volume_info,
838         .get =          snd_p16v_volume_get_analog_unknown,
839         .put =          snd_p16v_volume_put_analog_unknown
840 };
841
842 static struct snd_kcontrol_new snd_p16v_volume_control_analog_rear =
843 {
844         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
845         .name =         "HD Analog Rear Playback Volume",
846         .info =         snd_p16v_volume_info,
847         .get =          snd_p16v_volume_get_analog_rear,
848         .put =          snd_p16v_volume_put_analog_rear
849 };
850
851 static struct snd_kcontrol_new snd_p16v_volume_control_spdif_front =
852 {
853         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
854         .name =         "HD SPDIF Front Playback Volume",
855         .info =         snd_p16v_volume_info,
856         .get =          snd_p16v_volume_get_spdif_front,
857         .put =          snd_p16v_volume_put_spdif_front
858 };
859
860 static struct snd_kcontrol_new snd_p16v_volume_control_spdif_center_lfe =
861 {
862         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
863         .name =         "HD SPDIF Center/LFE Playback Volume",
864         .info =         snd_p16v_volume_info,
865         .get =          snd_p16v_volume_get_spdif_center_lfe,
866         .put =          snd_p16v_volume_put_spdif_center_lfe
867 };
868
869 static struct snd_kcontrol_new snd_p16v_volume_control_spdif_unknown =
870 {
871         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
872         .name =         "HD SPDIF Unknown Playback Volume",
873         .info =         snd_p16v_volume_info,
874         .get =          snd_p16v_volume_get_spdif_unknown,
875         .put =          snd_p16v_volume_put_spdif_unknown
876 };
877
878 static struct snd_kcontrol_new snd_p16v_volume_control_spdif_rear =
879 {
880         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
881         .name =         "HD SPDIF Rear Playback Volume",
882         .info =         snd_p16v_volume_info,
883         .get =          snd_p16v_volume_get_spdif_rear,
884         .put =          snd_p16v_volume_put_spdif_rear
885 };
886
887 static int snd_p16v_capture_source_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
888 {
889         static char *texts[8] = { "SPDIF", "I2S", "SRC48", "SRCMulti_SPDIF", "SRCMulti_I2S", "CDIF", "FX", "AC97" };
890
891         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
892         uinfo->count = 1;
893         uinfo->value.enumerated.items = 8;
894         if (uinfo->value.enumerated.item > 7)
895                 uinfo->value.enumerated.item = 7;
896         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
897         return 0;
898 }
899
900 static int snd_p16v_capture_source_get(struct snd_kcontrol *kcontrol,
901                                         struct snd_ctl_elem_value *ucontrol)
902 {
903         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
904
905         ucontrol->value.enumerated.item[0] = emu->p16v_capture_source;
906         return 0;
907 }
908
909 static int snd_p16v_capture_source_put(struct snd_kcontrol *kcontrol,
910                                         struct snd_ctl_elem_value *ucontrol)
911 {
912         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
913         unsigned int val;
914         int change = 0;
915         u32 mask;
916         u32 source;
917
918         val = ucontrol->value.enumerated.item[0] ;
919         change = (emu->p16v_capture_source != val);
920         if (change) {
921                 emu->p16v_capture_source = val;
922                 source = (val << 28) | (val << 24) | (val << 20) | (val << 16);
923                 mask = snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & 0xffff;
924                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, source | mask);
925         }
926         return change;
927 }
928
929 static struct snd_kcontrol_new snd_p16v_capture_source __devinitdata =
930 {
931         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
932         .name =         "HD source Capture",
933         .info =         snd_p16v_capture_source_info,
934         .get =          snd_p16v_capture_source_get,
935         .put =          snd_p16v_capture_source_put
936 };
937
938 static int snd_p16v_capture_channel_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
939 {
940         static char *texts[4] = { "0", "1", "2", "3",  };
941
942         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
943         uinfo->count = 1;
944         uinfo->value.enumerated.items = 4;
945         if (uinfo->value.enumerated.item > 3)
946                 uinfo->value.enumerated.item = 3;
947         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
948         return 0;
949 }
950
951 static int snd_p16v_capture_channel_get(struct snd_kcontrol *kcontrol,
952                                         struct snd_ctl_elem_value *ucontrol)
953 {
954         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
955
956         ucontrol->value.enumerated.item[0] = emu->p16v_capture_channel;
957         return 0;
958 }
959
960 static int snd_p16v_capture_channel_put(struct snd_kcontrol *kcontrol,
961                                         struct snd_ctl_elem_value *ucontrol)
962 {
963         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
964         unsigned int val;
965         int change = 0;
966         u32 tmp;
967
968         val = ucontrol->value.enumerated.item[0] ;
969         change = (emu->p16v_capture_channel != val);
970         if (change) {
971                 emu->p16v_capture_channel = val;
972                 tmp = snd_emu10k1_ptr20_read(emu, CAPTURE_P16V_SOURCE, 0) & 0xfffc;
973                 snd_emu10k1_ptr20_write(emu, CAPTURE_P16V_SOURCE, 0, tmp | val);
974         }
975         return change;
976 }
977
978 static struct snd_kcontrol_new snd_p16v_capture_channel __devinitdata =
979 {
980         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
981         .name =         "HD channel Capture",
982         .info =         snd_p16v_capture_channel_info,
983         .get =          snd_p16v_capture_channel_get,
984         .put =          snd_p16v_capture_channel_put
985 };
986
987 int snd_p16v_mixer(struct snd_emu10k1 *emu)
988 {
989         int err;
990         struct snd_kcontrol *kctl;
991         struct snd_card *card = emu->card;
992         if ((kctl = snd_ctl_new1(&snd_p16v_volume_control_analog_front, emu)) == NULL)
993                 return -ENOMEM;
994         if ((err = snd_ctl_add(card, kctl)))
995                 return err;
996         if ((kctl = snd_ctl_new1(&snd_p16v_volume_control_analog_rear, emu)) == NULL)
997                 return -ENOMEM;
998         if ((err = snd_ctl_add(card, kctl)))
999                 return err;
1000         if ((kctl = snd_ctl_new1(&snd_p16v_volume_control_analog_center_lfe, emu)) == NULL)
1001                 return -ENOMEM;
1002         if ((err = snd_ctl_add(card, kctl)))
1003                 return err;
1004         if ((kctl = snd_ctl_new1(&snd_p16v_volume_control_analog_unknown, emu)) == NULL)
1005                 return -ENOMEM;
1006         if ((err = snd_ctl_add(card, kctl)))
1007                 return err;
1008         if ((kctl = snd_ctl_new1(&snd_p16v_volume_control_spdif_front, emu)) == NULL)
1009                 return -ENOMEM;
1010         if ((err = snd_ctl_add(card, kctl)))
1011                 return err;
1012         if ((kctl = snd_ctl_new1(&snd_p16v_volume_control_spdif_rear, emu)) == NULL)
1013                 return -ENOMEM;
1014         if ((err = snd_ctl_add(card, kctl)))
1015                 return err;
1016         if ((kctl = snd_ctl_new1(&snd_p16v_volume_control_spdif_center_lfe, emu)) == NULL)
1017                 return -ENOMEM;
1018         if ((err = snd_ctl_add(card, kctl)))
1019                 return err;
1020         if ((kctl = snd_ctl_new1(&snd_p16v_volume_control_spdif_unknown, emu)) == NULL)
1021                 return -ENOMEM;
1022         if ((err = snd_ctl_add(card, kctl)))
1023                 return err;
1024         if ((kctl = snd_ctl_new1(&snd_p16v_capture_source, emu)) == NULL)
1025                 return -ENOMEM;
1026         if ((err = snd_ctl_add(card, kctl)))
1027                 return err;
1028         if ((kctl = snd_ctl_new1(&snd_p16v_capture_channel, emu)) == NULL)
1029                 return -ENOMEM;
1030         if ((err = snd_ctl_add(card, kctl)))
1031                 return err;
1032         return 0;
1033 }
1034
1035 #ifdef CONFIG_PM
1036
1037 #define NUM_CHS 1       /* up to 4, but only first channel is used */
1038
1039 int __devinit snd_p16v_alloc_pm_buffer(struct snd_emu10k1 *emu)
1040 {
1041         emu->p16v_saved = vmalloc(NUM_CHS * 4 * 0x80);
1042         if (! emu->p16v_saved)
1043                 return -ENOMEM;
1044         return 0;
1045 }
1046
1047 void snd_p16v_free_pm_buffer(struct snd_emu10k1 *emu)
1048 {
1049         vfree(emu->p16v_saved);
1050 }
1051
1052 void snd_p16v_suspend(struct snd_emu10k1 *emu)
1053 {
1054         int i, ch;
1055         unsigned int *val;
1056
1057         val = emu->p16v_saved;
1058         for (ch = 0; ch < NUM_CHS; ch++)
1059                 for (i = 0; i < 0x80; i++, val++)
1060                         *val = snd_emu10k1_ptr20_read(emu, i, ch);
1061 }
1062
1063 void snd_p16v_resume(struct snd_emu10k1 *emu)
1064 {
1065         int i, ch;
1066         unsigned int *val;
1067
1068         val = emu->p16v_saved;
1069         for (ch = 0; ch < NUM_CHS; ch++)
1070                 for (i = 0; i < 0x80; i++, val++)
1071                         snd_emu10k1_ptr20_write(emu, i, ch, *val);
1072 }
1073 #endif