[ALSA] Improve SPDIF playback via the P16V/CA0151 chip.
[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: 0.22
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  *
45  *
46  *  BUGS:
47  *    Some stability problems when unloading the snd-p16v kernel module.
48  *    --
49  *
50  *  TODO:
51  *    SPDIF out.
52  *    Find out how to change capture sample rates. E.g. To record SPDIF at 48000Hz.
53  *    Currently capture fixed at 48000Hz.
54  *
55  *    --
56  *  GENERAL INFO:
57  *    Model: SB0240
58  *    P16V Chip: CA0151-DBS
59  *    Audigy 2 Chip: CA0102-IAT
60  *    AC97 Codec: STAC 9721
61  *    ADC: Philips 1361T (Stereo 24bit)
62  *    DAC: CS4382-K (8-channel, 24bit, 192Khz)
63  *
64  *  This code was initally based on code from ALSA's emu10k1x.c which is:
65  *  Copyright (c) by Francisco Moraes <fmoraes@nc.rr.com>
66  *
67  *   This program is free software; you can redistribute it and/or modify
68  *   it under the terms of the GNU General Public License as published by
69  *   the Free Software Foundation; either version 2 of the License, or
70  *   (at your option) any later version.
71  *
72  *   This program is distributed in the hope that it will be useful,
73  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
74  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
75  *   GNU General Public License for more details.
76  *
77  *   You should have received a copy of the GNU General Public License
78  *   along with this program; if not, write to the Free Software
79  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
80  *
81  */
82 #include <sound/driver.h>
83 #include <linux/delay.h>
84 #include <linux/init.h>
85 #include <linux/interrupt.h>
86 #include <linux/pci.h>
87 #include <linux/slab.h>
88 #include <linux/moduleparam.h>
89 #include <sound/core.h>
90 #include <sound/initval.h>
91 #include <sound/pcm.h>
92 #include <sound/ac97_codec.h>
93 #include <sound/info.h>
94 #include <sound/emu10k1.h>
95 #include "p16v.h"
96
97 #define SET_CHANNEL 0  /* Testing channel outputs 0=Front, 1=Center/LFE, 2=Unknown, 3=Rear */
98 #define PCM_FRONT_CHANNEL 0
99 #define PCM_REAR_CHANNEL 1
100 #define PCM_CENTER_LFE_CHANNEL 2
101 #define PCM_UNKNOWN_CHANNEL 3
102 #define CONTROL_FRONT_CHANNEL 0
103 #define CONTROL_REAR_CHANNEL 3
104 #define CONTROL_CENTER_LFE_CHANNEL 1
105 #define CONTROL_UNKNOWN_CHANNEL 2
106
107 /* Card IDs:
108  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:2002 -> Audigy2 ZS 7.1 Model:SB0350
109  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:1007 -> Audigy2 6.1    Model:SB0240
110  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:1002 -> Audigy2 Platinum  Model:SB msb0240230009266
111  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:2007 -> Audigy4 Pro Model:SB0380 M1SB0380472001901E
112  *
113  */
114
115  /* hardware definition */
116 static snd_pcm_hardware_t snd_p16v_playback_hw = {
117         .info =                 (SNDRV_PCM_INFO_MMAP | 
118                                  SNDRV_PCM_INFO_INTERLEAVED |
119                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
120                                  SNDRV_PCM_INFO_MMAP_VALID),
121         .formats =              SNDRV_PCM_FMTBIT_S32_LE, /* Only supports 24-bit samples padded to 32 bits. */
122         .rates =                SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100, 
123         .rate_min =             44100,
124         .rate_max =             192000,
125         .channels_min =         8, 
126         .channels_max =         8,
127         .buffer_bytes_max =     (32*1024),
128         .period_bytes_min =     64,
129         .period_bytes_max =     (16*1024),
130         .periods_min =          2,
131         .periods_max =          8,
132         .fifo_size =            0,
133 };
134
135 static snd_pcm_hardware_t snd_p16v_capture_hw = {
136        .info =                 (SNDRV_PCM_INFO_MMAP |
137                                 SNDRV_PCM_INFO_INTERLEAVED |
138                                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
139                                 SNDRV_PCM_INFO_MMAP_VALID),
140        .formats =              SNDRV_PCM_FMTBIT_S32_LE,
141        .rates =                SNDRV_PCM_RATE_48000,
142        .rate_min =             48000,
143        .rate_max =             48000,
144        .channels_min =         2,
145        .channels_max =         2,
146        .buffer_bytes_max =     (32*1024),
147        .period_bytes_min =     64,
148        .period_bytes_max =     (16*1024),
149        .periods_min =          2,
150        .periods_max =          2,
151        .fifo_size =            0,
152 };
153
154
155 static void snd_p16v_pcm_free_substream(snd_pcm_runtime_t *runtime)
156 {
157         emu10k1_pcm_t *epcm = runtime->private_data;
158   
159         if (epcm) {
160                 //snd_printk("epcm free: %p\n", epcm);
161                 kfree(epcm);
162         }
163 }
164
165 /* open_playback callback */
166 static int snd_p16v_pcm_open_playback_channel(snd_pcm_substream_t *substream, int channel_id)
167 {
168         emu10k1_t *emu = snd_pcm_substream_chip(substream);
169         emu10k1_voice_t *channel = &(emu->p16v_voices[channel_id]);
170         emu10k1_pcm_t *epcm;
171         snd_pcm_runtime_t *runtime = substream->runtime;
172         int err;
173
174         epcm = kcalloc(1, sizeof(*epcm), GFP_KERNEL);
175         //snd_printk("epcm kcalloc: %p\n", epcm);
176
177         if (epcm == NULL)
178                 return -ENOMEM;
179         epcm->emu = emu;
180         epcm->substream = substream;
181         //snd_printk("epcm device=%d, channel_id=%d\n", substream->pcm->device, channel_id);
182   
183         runtime->private_data = epcm;
184         runtime->private_free = snd_p16v_pcm_free_substream;
185   
186         runtime->hw = snd_p16v_playback_hw;
187
188         channel->emu = emu;
189         channel->number = channel_id;
190
191         channel->use=1;
192         //snd_printk("p16v: open channel_id=%d, channel=%p, use=0x%x\n", channel_id, channel, channel->use);
193         //printk("open:channel_id=%d, chip=%p, channel=%p\n",channel_id, chip, channel);
194         //channel->interrupt = snd_p16v_pcm_channel_interrupt;
195         channel->epcm=epcm;
196         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
197                 return err;
198
199         return 0;
200 }
201 /* open_capture callback */
202 static int snd_p16v_pcm_open_capture_channel(snd_pcm_substream_t *substream, int channel_id)
203 {
204         emu10k1_t *emu = snd_pcm_substream_chip(substream);
205         emu10k1_voice_t *channel = &(emu->p16v_capture_voice);
206         emu10k1_pcm_t *epcm;
207         snd_pcm_runtime_t *runtime = substream->runtime;
208         int err;
209
210         epcm = kcalloc(1, sizeof(*epcm), GFP_KERNEL);
211         //snd_printk("epcm kcalloc: %p\n", epcm);
212
213         if (epcm == NULL)
214                 return -ENOMEM;
215         epcm->emu = emu;
216         epcm->substream = substream;
217         //snd_printk("epcm device=%d, channel_id=%d\n", substream->pcm->device, channel_id);
218
219         runtime->private_data = epcm;
220         runtime->private_free = snd_p16v_pcm_free_substream;
221   
222         runtime->hw = snd_p16v_capture_hw;
223
224         channel->emu = emu;
225         channel->number = channel_id;
226
227         channel->use=1;
228         //snd_printk("p16v: open channel_id=%d, channel=%p, use=0x%x\n", channel_id, channel, channel->use);
229         //printk("open:channel_id=%d, chip=%p, channel=%p\n",channel_id, chip, channel);
230         //channel->interrupt = snd_p16v_pcm_channel_interrupt;
231         channel->epcm=epcm;
232         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
233                 return err;
234
235         return 0;
236 }
237
238
239 /* close callback */
240 static int snd_p16v_pcm_close_playback(snd_pcm_substream_t *substream)
241 {
242         emu10k1_t *emu = snd_pcm_substream_chip(substream);
243         //snd_pcm_runtime_t *runtime = substream->runtime;
244         //emu10k1_pcm_t *epcm = runtime->private_data;
245         emu->p16v_voices[substream->pcm->device - emu->p16v_device_offset].use=0;
246         /* FIXME: maybe zero others */
247         return 0;
248 }
249
250 /* close callback */
251 static int snd_p16v_pcm_close_capture(snd_pcm_substream_t *substream)
252 {
253         emu10k1_t *emu = snd_pcm_substream_chip(substream);
254         //snd_pcm_runtime_t *runtime = substream->runtime;
255         //emu10k1_pcm_t *epcm = runtime->private_data;
256         emu->p16v_capture_voice.use=0;
257         /* FIXME: maybe zero others */
258         return 0;
259 }
260
261 static int snd_p16v_pcm_open_playback_front(snd_pcm_substream_t *substream)
262 {
263         return snd_p16v_pcm_open_playback_channel(substream, PCM_FRONT_CHANNEL);
264 }
265
266 static int snd_p16v_pcm_open_capture(snd_pcm_substream_t *substream)
267 {
268         // Only using channel 0 for now, but the card has 2 channels.
269         return snd_p16v_pcm_open_capture_channel(substream, 0);
270 }
271
272 /* hw_params callback */
273 static int snd_p16v_pcm_hw_params_playback(snd_pcm_substream_t *substream,
274                                       snd_pcm_hw_params_t * hw_params)
275 {
276         int result;
277         result = snd_pcm_lib_malloc_pages(substream,
278                                         params_buffer_bytes(hw_params));
279         return result;
280 }
281
282 /* hw_params callback */
283 static int snd_p16v_pcm_hw_params_capture(snd_pcm_substream_t *substream,
284                                       snd_pcm_hw_params_t * hw_params)
285 {
286         int result;
287         result = snd_pcm_lib_malloc_pages(substream,
288                                         params_buffer_bytes(hw_params));
289         return result;
290 }
291
292
293 /* hw_free callback */
294 static int snd_p16v_pcm_hw_free_playback(snd_pcm_substream_t *substream)
295 {
296         int result;
297         result = snd_pcm_lib_free_pages(substream);
298         return result;
299 }
300
301 /* hw_free callback */
302 static int snd_p16v_pcm_hw_free_capture(snd_pcm_substream_t *substream)
303 {
304         int result;
305         result = snd_pcm_lib_free_pages(substream);
306         return result;
307 }
308
309
310 /* prepare playback callback */
311 static int snd_p16v_pcm_prepare_playback(snd_pcm_substream_t *substream)
312 {
313         emu10k1_t *emu = snd_pcm_substream_chip(substream);
314         snd_pcm_runtime_t *runtime = substream->runtime;
315         int channel = substream->pcm->device - emu->p16v_device_offset;
316         u32 *table_base = (u32 *)(emu->p16v_buffer.area+(8*16*channel));
317         u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
318         int i;
319         u32 tmp;
320         
321         //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));
322         //snd_printk("dma_addr=%x, dma_area=%p, table_base=%p\n",runtime->dma_addr, runtime->dma_area, table_base);
323         //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);
324         tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
325         switch (runtime->rate) {
326         case 44100:
327           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x8080);
328           break;
329         case 96000:
330           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x4040);
331           break;
332         case 192000:
333           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x2020);
334           break;
335         case 48000:
336         default:
337           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x0000);
338           break;
339         }
340         /* FIXME: Check emu->buffer.size before actually writing to it. */
341         for(i=0; i < runtime->periods; i++) {
342                 table_base[i*2]=runtime->dma_addr+(i*period_size_bytes);
343                 table_base[(i*2)+1]=period_size_bytes<<16;
344         }
345  
346         snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_ADDR, channel, emu->p16v_buffer.addr+(8*16*channel));
347         snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19);
348         snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_PTR, channel, 0);
349         snd_emu10k1_ptr20_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr);
350         snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes
351         snd_emu10k1_ptr20_write(emu, PLAYBACK_POINTER, channel, 0);
352         snd_emu10k1_ptr20_write(emu, 0x07, channel, 0x0);
353         snd_emu10k1_ptr20_write(emu, 0x08, channel, 0);
354
355         return 0;
356 }
357
358 /* prepare capture callback */
359 static int snd_p16v_pcm_prepare_capture(snd_pcm_substream_t *substream)
360 {
361         emu10k1_t *emu = snd_pcm_substream_chip(substream);
362         snd_pcm_runtime_t *runtime = substream->runtime;
363         int channel = substream->pcm->device - emu->p16v_device_offset;
364         //printk("prepare: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));
365         snd_emu10k1_ptr20_write(emu, 0x13, channel, 0);
366         snd_emu10k1_ptr20_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);
367         snd_emu10k1_ptr20_write(emu, CAPTURE_BUFFER_SIZE, channel, frames_to_bytes(runtime, runtime->buffer_size)<<16); // buffer size in bytes
368         snd_emu10k1_ptr20_write(emu, CAPTURE_POINTER, channel, 0);
369         //snd_emu10k1_ptr20_write(emu, CAPTURE_SOURCE, 0x0, 0x333300e4); /* Select MIC or Line in */
370         //snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) | (0x110000<<channel));
371
372         return 0;
373 }
374
375 static void snd_p16v_intr_enable(emu10k1_t *emu, unsigned int intrenb)
376 {
377         unsigned long flags;
378         unsigned int enable;
379
380         spin_lock_irqsave(&emu->emu_lock, flags);
381         enable = inl(emu->port + INTE2) | intrenb;
382         outl(enable, emu->port + INTE2);
383         spin_unlock_irqrestore(&emu->emu_lock, flags);
384 }
385
386 static void snd_p16v_intr_disable(emu10k1_t *emu, unsigned int intrenb)
387 {
388         unsigned long flags;
389         unsigned int disable;
390
391         spin_lock_irqsave(&emu->emu_lock, flags);
392         disable = inl(emu->port + INTE2) & (~intrenb);
393         outl(disable, emu->port + INTE2);
394         spin_unlock_irqrestore(&emu->emu_lock, flags);
395 }
396
397 /* trigger_playback callback */
398 static int snd_p16v_pcm_trigger_playback(snd_pcm_substream_t *substream,
399                                     int cmd)
400 {
401         emu10k1_t *emu = snd_pcm_substream_chip(substream);
402         snd_pcm_runtime_t *runtime;
403         emu10k1_pcm_t *epcm;
404         int channel;
405         int result = 0;
406         struct list_head *pos;
407         snd_pcm_substream_t *s;
408         u32 basic = 0;
409         u32 inte = 0;
410         int running=0;
411
412         switch (cmd) {
413         case SNDRV_PCM_TRIGGER_START:
414                 running=1;
415                 break;
416         case SNDRV_PCM_TRIGGER_STOP:
417         default:
418                 running=0;
419                 break;
420         }
421         snd_pcm_group_for_each(pos, substream) {
422                 s = snd_pcm_group_substream_entry(pos);
423                 runtime = s->runtime;
424                 epcm = runtime->private_data;
425                 channel = substream->pcm->device-emu->p16v_device_offset;
426                 //snd_printk("p16v channel=%d\n",channel);
427                 epcm->running = running;
428                 basic |= (0x1<<channel);
429                 inte |= (INTE2_PLAYBACK_CH_0_LOOP<<channel);
430                 snd_pcm_trigger_done(s, substream);
431         }
432         //snd_printk("basic=0x%x, inte=0x%x\n",basic, inte);
433
434         switch (cmd) {
435         case SNDRV_PCM_TRIGGER_START:
436                 snd_p16v_intr_enable(emu, inte);
437                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)| (basic));
438                 break;
439         case SNDRV_PCM_TRIGGER_STOP:
440                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(basic));
441                 snd_p16v_intr_disable(emu, inte);
442                 break;
443         default:
444                 result = -EINVAL;
445                 break;
446         }
447         return result;
448 }
449
450 /* trigger_capture callback */
451 static int snd_p16v_pcm_trigger_capture(snd_pcm_substream_t *substream,
452                                    int cmd)
453 {
454         emu10k1_t *emu = snd_pcm_substream_chip(substream);
455         snd_pcm_runtime_t *runtime = substream->runtime;
456         emu10k1_pcm_t *epcm = runtime->private_data;
457         int channel = 0;
458         int result = 0;
459         u32 inte = INTE2_CAPTURE_CH_0_LOOP | INTE2_CAPTURE_CH_0_HALF_LOOP;
460
461         switch (cmd) {
462         case SNDRV_PCM_TRIGGER_START:
463                 snd_p16v_intr_enable(emu, inte);
464                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)|(0x100<<channel));
465                 epcm->running = 1;
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) & ~(0x100<<channel));
469                 snd_p16v_intr_disable(emu, inte);
470                 //snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) & ~(0x110000<<channel));
471                 epcm->running = 0;
472                 break;
473         default:
474                 result = -EINVAL;
475                 break;
476         }
477         return result;
478 }
479
480 /* pointer_playback callback */
481 static snd_pcm_uframes_t
482 snd_p16v_pcm_pointer_playback(snd_pcm_substream_t *substream)
483 {
484         emu10k1_t *emu = snd_pcm_substream_chip(substream);
485         snd_pcm_runtime_t *runtime = substream->runtime;
486         emu10k1_pcm_t *epcm = runtime->private_data;
487         snd_pcm_uframes_t ptr, ptr1, ptr2,ptr3,ptr4 = 0;
488         int channel = substream->pcm->device - emu->p16v_device_offset;
489         if (!epcm->running)
490                 return 0;
491
492         ptr3 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
493         ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
494         ptr4 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
495         if (ptr3 != ptr4) ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
496         ptr2 = bytes_to_frames(runtime, ptr1);
497         ptr2+= (ptr4 >> 3) * runtime->period_size;
498         ptr=ptr2;
499         if (ptr >= runtime->buffer_size)
500                 ptr -= runtime->buffer_size;
501
502         return ptr;
503 }
504
505 /* pointer_capture callback */
506 static snd_pcm_uframes_t
507 snd_p16v_pcm_pointer_capture(snd_pcm_substream_t *substream)
508 {
509         emu10k1_t *emu = snd_pcm_substream_chip(substream);
510         snd_pcm_runtime_t *runtime = substream->runtime;
511         emu10k1_pcm_t *epcm = runtime->private_data;
512         snd_pcm_uframes_t ptr, ptr1, ptr2 = 0;
513         int channel = 0;
514
515         if (!epcm->running)
516                 return 0;
517
518         ptr1 = snd_emu10k1_ptr20_read(emu, CAPTURE_POINTER, channel);
519         ptr2 = bytes_to_frames(runtime, ptr1);
520         ptr=ptr2;
521         if (ptr >= runtime->buffer_size) {
522                 ptr -= runtime->buffer_size;
523                 printk("buffer capture limited!\n");
524         }
525         //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);
526
527         return ptr;
528 }
529
530 /* operators */
531 static snd_pcm_ops_t snd_p16v_playback_front_ops = {
532         .open =        snd_p16v_pcm_open_playback_front,
533         .close =       snd_p16v_pcm_close_playback,
534         .ioctl =       snd_pcm_lib_ioctl,
535         .hw_params =   snd_p16v_pcm_hw_params_playback,
536         .hw_free =     snd_p16v_pcm_hw_free_playback,
537         .prepare =     snd_p16v_pcm_prepare_playback,
538         .trigger =     snd_p16v_pcm_trigger_playback,
539         .pointer =     snd_p16v_pcm_pointer_playback,
540 };
541
542 static snd_pcm_ops_t snd_p16v_capture_ops = {
543         .open =        snd_p16v_pcm_open_capture,
544         .close =       snd_p16v_pcm_close_capture,
545         .ioctl =       snd_pcm_lib_ioctl,
546         .hw_params =   snd_p16v_pcm_hw_params_capture,
547         .hw_free =     snd_p16v_pcm_hw_free_capture,
548         .prepare =     snd_p16v_pcm_prepare_capture,
549         .trigger =     snd_p16v_pcm_trigger_capture,
550         .pointer =     snd_p16v_pcm_pointer_capture,
551 };
552
553
554 int snd_p16v_free(emu10k1_t *chip)
555 {
556         // release the data
557         if (chip->p16v_buffer.area) {
558                 snd_dma_free_pages(&chip->p16v_buffer);
559                 //snd_printk("period lables free: %p\n", &chip->p16v_buffer);
560         }
561         return 0;
562 }
563
564 static void snd_p16v_pcm_free(snd_pcm_t *pcm)
565 {
566         emu10k1_t *emu = pcm->private_data;
567         //snd_printk("snd_p16v_pcm_free pcm: called\n");
568         snd_pcm_lib_preallocate_free_for_all(pcm);
569         emu->pcm = NULL;
570 }
571
572 int snd_p16v_pcm(emu10k1_t *emu, int device, snd_pcm_t **rpcm)
573 {
574         snd_pcm_t *pcm;
575         snd_pcm_substream_t *substream;
576         int err;
577         int capture=1;
578   
579         //snd_printk("snd_p16v_pcm called. device=%d\n", device);
580         emu->p16v_device_offset = device;
581         if (rpcm)
582                 *rpcm = NULL;
583
584         if ((err = snd_pcm_new(emu->card, "p16v", device, 1, capture, &pcm)) < 0)
585                 return err;
586   
587         pcm->private_data = emu;
588         pcm->private_free = snd_p16v_pcm_free;
589         // Single playback 8 channel device.
590         // Single capture 2 channel device.
591         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_p16v_playback_front_ops);
592         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_p16v_capture_ops);
593
594         pcm->info_flags = 0;
595         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
596         strcpy(pcm->name, "p16v");
597         emu->pcm = pcm;
598
599         for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; 
600             substream; 
601             substream = substream->next) {
602                 if ((err = snd_pcm_lib_preallocate_pages(substream, 
603                                                          SNDRV_DMA_TYPE_DEV, 
604                                                          snd_dma_pci_data(emu->pci), 
605                                                          64*1024, 64*1024)) < 0) /* FIXME: 32*1024 for sound buffer, between 32and64 for Periods table. */
606                         return err;
607                 //snd_printk("preallocate playback substream: err=%d\n", err);
608         }
609
610         for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream; 
611               substream; 
612               substream = substream->next) {
613                 if ((err = snd_pcm_lib_preallocate_pages(substream, 
614                                                    SNDRV_DMA_TYPE_DEV, 
615                                                    snd_dma_pci_data(emu->pci), 
616                                                    64*1024, 64*1024)) < 0)
617                         return err;
618                 //snd_printk("preallocate capture substream: err=%d\n", err);
619         }
620   
621         if (rpcm)
622                 *rpcm = pcm;
623   
624         return 0;
625 }
626
627 static int snd_p16v_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
628 {
629         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
630         uinfo->count = 2;
631         uinfo->value.integer.min = 0;
632         uinfo->value.integer.max = 255;
633         return 0;
634 }
635
636 static int snd_p16v_volume_get(snd_kcontrol_t * kcontrol,
637                                        snd_ctl_elem_value_t * ucontrol, int reg, int high_low)
638 {
639         emu10k1_t *emu = snd_kcontrol_chip(kcontrol);
640         u32 value;
641
642         value = snd_emu10k1_ptr20_read(emu, reg, high_low);
643         if (high_low == 1) {
644                 ucontrol->value.integer.value[0] = 0xff - ((value >> 24) & 0xff); /* Left */
645                 ucontrol->value.integer.value[1] = 0xff - ((value >> 16) & 0xff); /* Right */
646         } else {
647                 ucontrol->value.integer.value[0] = 0xff - ((value >> 8) & 0xff); /* Left */
648                 ucontrol->value.integer.value[1] = 0xff - ((value >> 0) & 0xff); /* Right */
649         }
650         return 0;
651 }
652
653 static int snd_p16v_volume_get_spdif_front(snd_kcontrol_t * kcontrol,
654                                        snd_ctl_elem_value_t * ucontrol)
655 {
656         int high_low = 0;
657         int reg = PLAYBACK_VOLUME_MIXER7;
658         return snd_p16v_volume_get(kcontrol, ucontrol, reg, high_low);
659 }
660
661 static int snd_p16v_volume_get_spdif_center_lfe(snd_kcontrol_t * kcontrol,
662                                        snd_ctl_elem_value_t * ucontrol)
663 {
664         int high_low = 1;
665         int reg = PLAYBACK_VOLUME_MIXER7;
666         return snd_p16v_volume_get(kcontrol, ucontrol, reg, high_low);
667 }
668 static int snd_p16v_volume_get_spdif_unknown(snd_kcontrol_t * kcontrol,
669                                        snd_ctl_elem_value_t * ucontrol)
670 {
671         int high_low = 0;
672         int reg = PLAYBACK_VOLUME_MIXER8;
673         return snd_p16v_volume_get(kcontrol, ucontrol, reg, high_low);
674 }
675 static int snd_p16v_volume_get_spdif_rear(snd_kcontrol_t * kcontrol,
676                                        snd_ctl_elem_value_t * ucontrol)
677 {
678         int high_low = 1;
679         int reg = PLAYBACK_VOLUME_MIXER8;
680         return snd_p16v_volume_get(kcontrol, ucontrol, reg, high_low);
681 }
682
683 static int snd_p16v_volume_get_analog_front(snd_kcontrol_t * kcontrol,
684                                        snd_ctl_elem_value_t * ucontrol)
685 {
686         int high_low = 0;
687         int reg = PLAYBACK_VOLUME_MIXER9;
688         return snd_p16v_volume_get(kcontrol, ucontrol, reg, high_low);
689 }
690
691 static int snd_p16v_volume_get_analog_center_lfe(snd_kcontrol_t * kcontrol,
692                                        snd_ctl_elem_value_t * ucontrol)
693 {
694         int high_low = 1;
695         int reg = PLAYBACK_VOLUME_MIXER9;
696         return snd_p16v_volume_get(kcontrol, ucontrol, reg, high_low);
697 }
698 static int snd_p16v_volume_get_analog_rear(snd_kcontrol_t * kcontrol,
699                                        snd_ctl_elem_value_t * ucontrol)
700 {
701         int high_low = 1;
702         int reg = PLAYBACK_VOLUME_MIXER10;
703         return snd_p16v_volume_get(kcontrol, ucontrol, reg, high_low);
704 }
705
706 static int snd_p16v_volume_get_analog_unknown(snd_kcontrol_t * kcontrol,
707                                        snd_ctl_elem_value_t * ucontrol)
708 {
709         int high_low = 0;
710         int reg = PLAYBACK_VOLUME_MIXER10;
711         return snd_p16v_volume_get(kcontrol, ucontrol, reg, high_low);
712 }
713
714 static int snd_p16v_volume_put(snd_kcontrol_t * kcontrol,
715                                        snd_ctl_elem_value_t * ucontrol, int reg, int high_low)
716 {
717         emu10k1_t *emu = snd_kcontrol_chip(kcontrol);
718         u32 value;
719         value = snd_emu10k1_ptr20_read(emu, reg, 0);
720         //value = value & 0xffff;
721         if (high_low == 1) {
722                 value &= 0xffff;
723                 value = value | ((0xff - ucontrol->value.integer.value[0]) << 24) | ((0xff - ucontrol->value.integer.value[1]) << 16);
724         } else {
725                 value &= 0xffff0000;
726                 value = value | ((0xff - ucontrol->value.integer.value[0]) << 8) | ((0xff - ucontrol->value.integer.value[1]) );
727         }
728                 snd_emu10k1_ptr20_write(emu, reg, 0, value);
729         return 1;
730 }
731
732 static int snd_p16v_volume_put_spdif_front(snd_kcontrol_t * kcontrol,
733                                        snd_ctl_elem_value_t * ucontrol)
734 {
735         int high_low = 0;
736         int reg = PLAYBACK_VOLUME_MIXER7;
737         return snd_p16v_volume_put(kcontrol, ucontrol, reg, high_low);
738 }
739
740 static int snd_p16v_volume_put_spdif_center_lfe(snd_kcontrol_t * kcontrol,
741                                        snd_ctl_elem_value_t * ucontrol)
742 {
743         int high_low = 1;
744         int reg = PLAYBACK_VOLUME_MIXER7;
745         return snd_p16v_volume_put(kcontrol, ucontrol, reg, high_low);
746 }
747
748 static int snd_p16v_volume_put_spdif_unknown(snd_kcontrol_t * kcontrol,
749                                        snd_ctl_elem_value_t * ucontrol)
750 {
751         int high_low = 0;
752         int reg = PLAYBACK_VOLUME_MIXER8;
753         return snd_p16v_volume_put(kcontrol, ucontrol, reg, high_low);
754 }
755
756 static int snd_p16v_volume_put_spdif_rear(snd_kcontrol_t * kcontrol,
757                                        snd_ctl_elem_value_t * ucontrol)
758 {
759         int high_low = 1;
760         int reg = PLAYBACK_VOLUME_MIXER8;
761         return snd_p16v_volume_put(kcontrol, ucontrol, reg, high_low);
762 }
763
764 static int snd_p16v_volume_put_analog_front(snd_kcontrol_t * kcontrol,
765                                        snd_ctl_elem_value_t * ucontrol)
766 {
767         int high_low = 0;
768         int reg = PLAYBACK_VOLUME_MIXER9;
769         return snd_p16v_volume_put(kcontrol, ucontrol, reg, high_low);
770 }
771
772 static int snd_p16v_volume_put_analog_center_lfe(snd_kcontrol_t * kcontrol,
773                                        snd_ctl_elem_value_t * ucontrol)
774 {
775         int high_low = 1;
776         int reg = PLAYBACK_VOLUME_MIXER9;
777         return snd_p16v_volume_put(kcontrol, ucontrol, reg, high_low);
778 }
779
780 static int snd_p16v_volume_put_analog_rear(snd_kcontrol_t * kcontrol,
781                                        snd_ctl_elem_value_t * ucontrol)
782 {
783         int high_low = 1;
784         int reg = PLAYBACK_VOLUME_MIXER10;
785         return snd_p16v_volume_put(kcontrol, ucontrol, reg, high_low);
786 }
787
788 static int snd_p16v_volume_put_analog_unknown(snd_kcontrol_t * kcontrol,
789                                        snd_ctl_elem_value_t * ucontrol)
790 {
791         int high_low = 0;
792         int reg = PLAYBACK_VOLUME_MIXER10;
793         return snd_p16v_volume_put(kcontrol, ucontrol, reg, high_low);
794 }
795
796 static snd_kcontrol_new_t snd_p16v_volume_control_analog_front =
797 {
798         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
799         .name =         "HD Analog Front Volume",
800         .info =         snd_p16v_volume_info,
801         .get =          snd_p16v_volume_get_analog_front,
802         .put =          snd_p16v_volume_put_analog_front
803 };
804
805 static snd_kcontrol_new_t snd_p16v_volume_control_analog_center_lfe =
806 {
807         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
808         .name =         "HD Analog Center/LFE Volume",
809         .info =         snd_p16v_volume_info,
810         .get =          snd_p16v_volume_get_analog_center_lfe,
811         .put =          snd_p16v_volume_put_analog_center_lfe
812 };
813
814 static snd_kcontrol_new_t snd_p16v_volume_control_analog_unknown =
815 {
816         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
817         .name =         "HD Analog Unknown Volume",
818         .info =         snd_p16v_volume_info,
819         .get =          snd_p16v_volume_get_analog_unknown,
820         .put =          snd_p16v_volume_put_analog_unknown
821 };
822
823 static snd_kcontrol_new_t snd_p16v_volume_control_analog_rear =
824 {
825         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
826         .name =         "HD Analog Rear Volume",
827         .info =         snd_p16v_volume_info,
828         .get =          snd_p16v_volume_get_analog_rear,
829         .put =          snd_p16v_volume_put_analog_rear
830 };
831
832 static snd_kcontrol_new_t snd_p16v_volume_control_spdif_front =
833 {
834         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
835         .name =         "HD SPDIF Front Volume",
836         .info =         snd_p16v_volume_info,
837         .get =          snd_p16v_volume_get_spdif_front,
838         .put =          snd_p16v_volume_put_spdif_front
839 };
840
841 static snd_kcontrol_new_t snd_p16v_volume_control_spdif_center_lfe =
842 {
843         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
844         .name =         "HD SPDIF Center/LFE Volume",
845         .info =         snd_p16v_volume_info,
846         .get =          snd_p16v_volume_get_spdif_center_lfe,
847         .put =          snd_p16v_volume_put_spdif_center_lfe
848 };
849
850 static snd_kcontrol_new_t snd_p16v_volume_control_spdif_unknown =
851 {
852         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
853         .name =         "HD SPDIF Unknown Volume",
854         .info =         snd_p16v_volume_info,
855         .get =          snd_p16v_volume_get_spdif_unknown,
856         .put =          snd_p16v_volume_put_spdif_unknown
857 };
858
859 static snd_kcontrol_new_t snd_p16v_volume_control_spdif_rear =
860 {
861         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
862         .name =         "HD SPDIF Rear Volume",
863         .info =         snd_p16v_volume_info,
864         .get =          snd_p16v_volume_get_spdif_rear,
865         .put =          snd_p16v_volume_put_spdif_rear
866 };
867
868 static int snd_p16v_capture_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
869 {
870         static char *texts[8] = { "SPDIF", "I2S", "SRC48", "SRCMulti_SPDIF", "SRCMulti_I2S", "CDIF", "FX", "AC97" };
871
872         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
873         uinfo->count = 1;
874         uinfo->value.enumerated.items = 8;
875         if (uinfo->value.enumerated.item > 7)
876                 uinfo->value.enumerated.item = 7;
877         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
878         return 0;
879 }
880
881 static int snd_p16v_capture_source_get(snd_kcontrol_t * kcontrol,
882                                         snd_ctl_elem_value_t * ucontrol)
883 {
884         emu10k1_t *emu = snd_kcontrol_chip(kcontrol);
885
886         ucontrol->value.enumerated.item[0] = emu->p16v_capture_source;
887         return 0;
888 }
889
890 static int snd_p16v_capture_source_put(snd_kcontrol_t * kcontrol,
891                                         snd_ctl_elem_value_t * ucontrol)
892 {
893         emu10k1_t *emu = snd_kcontrol_chip(kcontrol);
894         unsigned int val;
895         int change = 0;
896         u32 mask;
897         u32 source;
898
899         val = ucontrol->value.enumerated.item[0] ;
900         change = (emu->p16v_capture_source != val);
901         if (change) {
902                 emu->p16v_capture_source = val;
903                 source = (val << 28) | (val << 24) | (val << 20) | (val << 16);
904                 mask = snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & 0xffff;
905                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, source | mask);
906         }
907         return change;
908 }
909
910 static snd_kcontrol_new_t snd_p16v_capture_source __devinitdata =
911 {
912         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
913         .name =         "HD Capture source",
914         .info =         snd_p16v_capture_source_info,
915         .get =          snd_p16v_capture_source_get,
916         .put =          snd_p16v_capture_source_put
917 };
918 int snd_p16v_mixer(emu10k1_t *emu)
919 {
920         int err;
921         snd_kcontrol_t *kctl;
922         snd_card_t *card = emu->card;
923         if ((kctl = snd_ctl_new1(&snd_p16v_volume_control_analog_front, emu)) == NULL)
924                 return -ENOMEM;
925         if ((err = snd_ctl_add(card, kctl)))
926                 return err;
927         if ((kctl = snd_ctl_new1(&snd_p16v_volume_control_analog_rear, emu)) == NULL)
928                 return -ENOMEM;
929         if ((err = snd_ctl_add(card, kctl)))
930                 return err;
931         if ((kctl = snd_ctl_new1(&snd_p16v_volume_control_analog_center_lfe, emu)) == NULL)
932                 return -ENOMEM;
933         if ((err = snd_ctl_add(card, kctl)))
934                 return err;
935         if ((kctl = snd_ctl_new1(&snd_p16v_volume_control_analog_unknown, emu)) == NULL)
936                 return -ENOMEM;
937         if ((err = snd_ctl_add(card, kctl)))
938                 return err;
939         if ((kctl = snd_ctl_new1(&snd_p16v_volume_control_spdif_front, emu)) == NULL)
940                 return -ENOMEM;
941         if ((err = snd_ctl_add(card, kctl)))
942                 return err;
943         if ((kctl = snd_ctl_new1(&snd_p16v_volume_control_spdif_rear, emu)) == NULL)
944                 return -ENOMEM;
945         if ((err = snd_ctl_add(card, kctl)))
946                 return err;
947         if ((kctl = snd_ctl_new1(&snd_p16v_volume_control_spdif_center_lfe, emu)) == NULL)
948                 return -ENOMEM;
949         if ((err = snd_ctl_add(card, kctl)))
950                 return err;
951         if ((kctl = snd_ctl_new1(&snd_p16v_volume_control_spdif_unknown, emu)) == NULL)
952                 return -ENOMEM;
953         if ((err = snd_ctl_add(card, kctl)))
954                 return err;
955         if ((kctl = snd_ctl_new1(&snd_p16v_capture_source, emu)) == NULL)
956                 return -ENOMEM;
957         if ((err = snd_ctl_add(card, kctl)))
958                 return err;
959         return 0;
960 }
961