[ALSA] emu10k1 - Clean up p16v code
[linux-2.6] / 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/vmalloc.h>
97 #include <linux/moduleparam.h>
98 #include <sound/core.h>
99 #include <sound/initval.h>
100 #include <sound/pcm.h>
101 #include <sound/ac97_codec.h>
102 #include <sound/info.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 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         .formats =              SNDRV_PCM_FMTBIT_S32_LE, /* Only supports 24-bit samples padded to 32 bits. */
132         .rates =                SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100, 
133         .rate_min =             44100,
134         .rate_max =             192000,
135         .channels_min =         8, 
136         .channels_max =         8,
137         .buffer_bytes_max =     ((65536 - 64) * 8),
138         .period_bytes_min =     64,
139         .period_bytes_max =     (65536 - 64),
140         .periods_min =          2,
141         .periods_max =          8,
142         .fifo_size =            0,
143 };
144
145 static struct snd_pcm_hardware snd_p16v_capture_hw = {
146         .info =                 (SNDRV_PCM_INFO_MMAP |
147                                  SNDRV_PCM_INFO_INTERLEAVED |
148                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
149                                  SNDRV_PCM_INFO_RESUME |
150                                  SNDRV_PCM_INFO_MMAP_VALID),
151         .formats =              SNDRV_PCM_FMTBIT_S32_LE,
152         .rates =                SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100, 
153         .rate_min =             44100,
154         .rate_max =             192000,
155         .channels_min =         2,
156         .channels_max =         2,
157         .buffer_bytes_max =     (65536 - 64),
158         .period_bytes_min =     64,
159         .period_bytes_max =     (65536 - 128) >> 1,  /* size has to be N*64 bytes */
160         .periods_min =          2,
161         .periods_max =          2,
162         .fifo_size =            0,
163 };
164
165 static void snd_p16v_pcm_free_substream(struct snd_pcm_runtime *runtime)
166 {
167         struct snd_emu10k1_pcm *epcm = runtime->private_data;
168   
169         if (epcm) {
170                 //snd_printk("epcm free: %p\n", epcm);
171                 kfree(epcm);
172         }
173 }
174
175 /* open_playback callback */
176 static int snd_p16v_pcm_open_playback_channel(struct snd_pcm_substream *substream, int channel_id)
177 {
178         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
179         struct snd_emu10k1_voice *channel = &(emu->p16v_voices[channel_id]);
180         struct snd_emu10k1_pcm *epcm;
181         struct snd_pcm_runtime *runtime = substream->runtime;
182         int err;
183
184         epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
185         //snd_printk("epcm kcalloc: %p\n", epcm);
186
187         if (epcm == NULL)
188                 return -ENOMEM;
189         epcm->emu = emu;
190         epcm->substream = substream;
191         //snd_printk("epcm device=%d, channel_id=%d\n", 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         //snd_printk("p16v: open channel_id=%d, channel=%p, use=0x%x\n", channel_id, channel, channel->use);
203         //printk("open:channel_id=%d, chip=%p, channel=%p\n",channel_id, chip, channel);
204         //channel->interrupt = snd_p16v_pcm_channel_interrupt;
205         channel->epcm=epcm;
206         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
207                 return err;
208
209         return 0;
210 }
211 /* open_capture callback */
212 static int snd_p16v_pcm_open_capture_channel(struct snd_pcm_substream *substream, int channel_id)
213 {
214         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
215         struct snd_emu10k1_voice *channel = &(emu->p16v_capture_voice);
216         struct snd_emu10k1_pcm *epcm;
217         struct snd_pcm_runtime *runtime = substream->runtime;
218         int err;
219
220         epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
221         //snd_printk("epcm kcalloc: %p\n", epcm);
222
223         if (epcm == NULL)
224                 return -ENOMEM;
225         epcm->emu = emu;
226         epcm->substream = substream;
227         //snd_printk("epcm device=%d, channel_id=%d\n", substream->pcm->device, channel_id);
228
229         runtime->private_data = epcm;
230         runtime->private_free = snd_p16v_pcm_free_substream;
231   
232         runtime->hw = snd_p16v_capture_hw;
233
234         channel->emu = emu;
235         channel->number = channel_id;
236
237         channel->use=1;
238         //snd_printk("p16v: open channel_id=%d, channel=%p, use=0x%x\n", channel_id, channel, channel->use);
239         //printk("open:channel_id=%d, chip=%p, channel=%p\n",channel_id, chip, channel);
240         //channel->interrupt = snd_p16v_pcm_channel_interrupt;
241         channel->epcm=epcm;
242         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
243                 return err;
244
245         return 0;
246 }
247
248
249 /* close callback */
250 static int snd_p16v_pcm_close_playback(struct snd_pcm_substream *substream)
251 {
252         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
253         //struct snd_pcm_runtime *runtime = substream->runtime;
254         //struct snd_emu10k1_pcm *epcm = runtime->private_data;
255         emu->p16v_voices[substream->pcm->device - emu->p16v_device_offset].use=0;
256         /* FIXME: maybe zero others */
257         return 0;
258 }
259
260 /* close callback */
261 static int snd_p16v_pcm_close_capture(struct snd_pcm_substream *substream)
262 {
263         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
264         //struct snd_pcm_runtime *runtime = substream->runtime;
265         //struct snd_emu10k1_pcm *epcm = runtime->private_data;
266         emu->p16v_capture_voice.use=0;
267         /* FIXME: maybe zero others */
268         return 0;
269 }
270
271 static int snd_p16v_pcm_open_playback_front(struct snd_pcm_substream *substream)
272 {
273         return snd_p16v_pcm_open_playback_channel(substream, PCM_FRONT_CHANNEL);
274 }
275
276 static int snd_p16v_pcm_open_capture(struct snd_pcm_substream *substream)
277 {
278         // Only using channel 0 for now, but the card has 2 channels.
279         return snd_p16v_pcm_open_capture_channel(substream, 0);
280 }
281
282 /* hw_params callback */
283 static int snd_p16v_pcm_hw_params_playback(struct snd_pcm_substream *substream,
284                                       struct snd_pcm_hw_params *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 /* hw_params callback */
293 static int snd_p16v_pcm_hw_params_capture(struct snd_pcm_substream *substream,
294                                       struct snd_pcm_hw_params *hw_params)
295 {
296         int result;
297         result = snd_pcm_lib_malloc_pages(substream,
298                                         params_buffer_bytes(hw_params));
299         return result;
300 }
301
302
303 /* hw_free callback */
304 static int snd_p16v_pcm_hw_free_playback(struct snd_pcm_substream *substream)
305 {
306         int result;
307         result = snd_pcm_lib_free_pages(substream);
308         return result;
309 }
310
311 /* hw_free callback */
312 static int snd_p16v_pcm_hw_free_capture(struct snd_pcm_substream *substream)
313 {
314         int result;
315         result = snd_pcm_lib_free_pages(substream);
316         return result;
317 }
318
319
320 /* prepare playback callback */
321 static int snd_p16v_pcm_prepare_playback(struct snd_pcm_substream *substream)
322 {
323         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
324         struct snd_pcm_runtime *runtime = substream->runtime;
325         int channel = substream->pcm->device - emu->p16v_device_offset;
326         u32 *table_base = (u32 *)(emu->p16v_buffer.area+(8*16*channel));
327         u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
328         int i;
329         u32 tmp;
330         
331         //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));
332         //snd_printk("dma_addr=%x, dma_area=%p, table_base=%p\n",runtime->dma_addr, runtime->dma_area, table_base);
333         //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);
334         tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
335         switch (runtime->rate) {
336         case 44100:
337           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x8080);
338           break;
339         case 96000:
340           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x4040);
341           break;
342         case 192000:
343           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x2020);
344           break;
345         case 48000:
346         default:
347           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x0000);
348           break;
349         }
350         /* FIXME: Check emu->buffer.size before actually writing to it. */
351         for(i=0; i < runtime->periods; i++) {
352                 table_base[i*2]=runtime->dma_addr+(i*period_size_bytes);
353                 table_base[(i*2)+1]=period_size_bytes<<16;
354         }
355  
356         snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_ADDR, channel, emu->p16v_buffer.addr+(8*16*channel));
357         snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19);
358         snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_PTR, channel, 0);
359         snd_emu10k1_ptr20_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr);
360         //snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes
361         snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, 0); // buffer size in bytes
362         snd_emu10k1_ptr20_write(emu, PLAYBACK_POINTER, channel, 0);
363         snd_emu10k1_ptr20_write(emu, 0x07, channel, 0x0);
364         snd_emu10k1_ptr20_write(emu, 0x08, channel, 0);
365
366         return 0;
367 }
368
369 /* prepare capture callback */
370 static int snd_p16v_pcm_prepare_capture(struct snd_pcm_substream *substream)
371 {
372         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
373         struct snd_pcm_runtime *runtime = substream->runtime;
374         int channel = substream->pcm->device - emu->p16v_device_offset;
375         u32 tmp;
376         //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));
377         tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
378         switch (runtime->rate) {
379         case 44100:
380           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0800);
381           break;
382         case 96000:
383           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0400);
384           break;
385         case 192000:
386           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0200);
387           break;
388         case 48000:
389         default:
390           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0000);
391           break;
392         }
393         /* FIXME: Check emu->buffer.size before actually writing to it. */
394         snd_emu10k1_ptr20_write(emu, 0x13, channel, 0);
395         snd_emu10k1_ptr20_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);
396         snd_emu10k1_ptr20_write(emu, CAPTURE_BUFFER_SIZE, channel, frames_to_bytes(runtime, runtime->buffer_size)<<16); // buffer size in bytes
397         snd_emu10k1_ptr20_write(emu, CAPTURE_POINTER, channel, 0);
398         //snd_emu10k1_ptr20_write(emu, CAPTURE_SOURCE, 0x0, 0x333300e4); /* Select MIC or Line in */
399         //snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) | (0x110000<<channel));
400
401         return 0;
402 }
403
404 static void snd_p16v_intr_enable(struct snd_emu10k1 *emu, unsigned int intrenb)
405 {
406         unsigned long flags;
407         unsigned int enable;
408
409         spin_lock_irqsave(&emu->emu_lock, flags);
410         enable = inl(emu->port + INTE2) | intrenb;
411         outl(enable, emu->port + INTE2);
412         spin_unlock_irqrestore(&emu->emu_lock, flags);
413 }
414
415 static void snd_p16v_intr_disable(struct snd_emu10k1 *emu, unsigned int intrenb)
416 {
417         unsigned long flags;
418         unsigned int disable;
419
420         spin_lock_irqsave(&emu->emu_lock, flags);
421         disable = inl(emu->port + INTE2) & (~intrenb);
422         outl(disable, emu->port + INTE2);
423         spin_unlock_irqrestore(&emu->emu_lock, flags);
424 }
425
426 /* trigger_playback callback */
427 static int snd_p16v_pcm_trigger_playback(struct snd_pcm_substream *substream,
428                                     int cmd)
429 {
430         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
431         struct snd_pcm_runtime *runtime;
432         struct snd_emu10k1_pcm *epcm;
433         int channel;
434         int result = 0;
435         struct list_head *pos;
436         struct snd_pcm_substream *s;
437         u32 basic = 0;
438         u32 inte = 0;
439         int running=0;
440
441         switch (cmd) {
442         case SNDRV_PCM_TRIGGER_START:
443                 running=1;
444                 break;
445         case SNDRV_PCM_TRIGGER_STOP:
446         default:
447                 running=0;
448                 break;
449         }
450         snd_pcm_group_for_each(pos, substream) {
451                 s = snd_pcm_group_substream_entry(pos);
452                 runtime = s->runtime;
453                 epcm = runtime->private_data;
454                 channel = substream->pcm->device-emu->p16v_device_offset;
455                 //snd_printk("p16v channel=%d\n",channel);
456                 epcm->running = running;
457                 basic |= (0x1<<channel);
458                 inte |= (INTE2_PLAYBACK_CH_0_LOOP<<channel);
459                 snd_pcm_trigger_done(s, substream);
460         }
461         //snd_printk("basic=0x%x, inte=0x%x\n",basic, inte);
462
463         switch (cmd) {
464         case SNDRV_PCM_TRIGGER_START:
465                 snd_p16v_intr_enable(emu, inte);
466                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)| (basic));
467                 break;
468         case SNDRV_PCM_TRIGGER_STOP:
469                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(basic));
470                 snd_p16v_intr_disable(emu, inte);
471                 break;
472         default:
473                 result = -EINVAL;
474                 break;
475         }
476         return result;
477 }
478
479 /* trigger_capture callback */
480 static int snd_p16v_pcm_trigger_capture(struct snd_pcm_substream *substream,
481                                    int cmd)
482 {
483         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
484         struct snd_pcm_runtime *runtime = substream->runtime;
485         struct snd_emu10k1_pcm *epcm = runtime->private_data;
486         int channel = 0;
487         int result = 0;
488         u32 inte = INTE2_CAPTURE_CH_0_LOOP | INTE2_CAPTURE_CH_0_HALF_LOOP;
489
490         switch (cmd) {
491         case SNDRV_PCM_TRIGGER_START:
492                 snd_p16v_intr_enable(emu, inte);
493                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)|(0x100<<channel));
494                 epcm->running = 1;
495                 break;
496         case SNDRV_PCM_TRIGGER_STOP:
497                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(0x100<<channel));
498                 snd_p16v_intr_disable(emu, inte);
499                 //snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) & ~(0x110000<<channel));
500                 epcm->running = 0;
501                 break;
502         default:
503                 result = -EINVAL;
504                 break;
505         }
506         return result;
507 }
508
509 /* pointer_playback callback */
510 static snd_pcm_uframes_t
511 snd_p16v_pcm_pointer_playback(struct snd_pcm_substream *substream)
512 {
513         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
514         struct snd_pcm_runtime *runtime = substream->runtime;
515         struct snd_emu10k1_pcm *epcm = runtime->private_data;
516         snd_pcm_uframes_t ptr, ptr1, ptr2,ptr3,ptr4 = 0;
517         int channel = substream->pcm->device - emu->p16v_device_offset;
518         if (!epcm->running)
519                 return 0;
520
521         ptr3 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
522         ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
523         ptr4 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
524         if (ptr3 != ptr4) ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
525         ptr2 = bytes_to_frames(runtime, ptr1);
526         ptr2+= (ptr4 >> 3) * runtime->period_size;
527         ptr=ptr2;
528         if (ptr >= runtime->buffer_size)
529                 ptr -= runtime->buffer_size;
530
531         return ptr;
532 }
533
534 /* pointer_capture callback */
535 static snd_pcm_uframes_t
536 snd_p16v_pcm_pointer_capture(struct snd_pcm_substream *substream)
537 {
538         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
539         struct snd_pcm_runtime *runtime = substream->runtime;
540         struct snd_emu10k1_pcm *epcm = runtime->private_data;
541         snd_pcm_uframes_t ptr, ptr1, ptr2 = 0;
542         int channel = 0;
543
544         if (!epcm->running)
545                 return 0;
546
547         ptr1 = snd_emu10k1_ptr20_read(emu, CAPTURE_POINTER, channel);
548         ptr2 = bytes_to_frames(runtime, ptr1);
549         ptr=ptr2;
550         if (ptr >= runtime->buffer_size) {
551                 ptr -= runtime->buffer_size;
552                 printk(KERN_WARNING "buffer capture limited!\n");
553         }
554         //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);
555
556         return ptr;
557 }
558
559 /* operators */
560 static struct snd_pcm_ops snd_p16v_playback_front_ops = {
561         .open =        snd_p16v_pcm_open_playback_front,
562         .close =       snd_p16v_pcm_close_playback,
563         .ioctl =       snd_pcm_lib_ioctl,
564         .hw_params =   snd_p16v_pcm_hw_params_playback,
565         .hw_free =     snd_p16v_pcm_hw_free_playback,
566         .prepare =     snd_p16v_pcm_prepare_playback,
567         .trigger =     snd_p16v_pcm_trigger_playback,
568         .pointer =     snd_p16v_pcm_pointer_playback,
569 };
570
571 static struct snd_pcm_ops snd_p16v_capture_ops = {
572         .open =        snd_p16v_pcm_open_capture,
573         .close =       snd_p16v_pcm_close_capture,
574         .ioctl =       snd_pcm_lib_ioctl,
575         .hw_params =   snd_p16v_pcm_hw_params_capture,
576         .hw_free =     snd_p16v_pcm_hw_free_capture,
577         .prepare =     snd_p16v_pcm_prepare_capture,
578         .trigger =     snd_p16v_pcm_trigger_capture,
579         .pointer =     snd_p16v_pcm_pointer_capture,
580 };
581
582
583 int snd_p16v_free(struct snd_emu10k1 *chip)
584 {
585         // release the data
586         if (chip->p16v_buffer.area) {
587                 snd_dma_free_pages(&chip->p16v_buffer);
588                 //snd_printk("period lables free: %p\n", &chip->p16v_buffer);
589         }
590         return 0;
591 }
592
593 int __devinit snd_p16v_pcm(struct snd_emu10k1 *emu, int device, struct snd_pcm **rpcm)
594 {
595         struct snd_pcm *pcm;
596         struct snd_pcm_substream *substream;
597         int err;
598         int capture=1;
599   
600         //snd_printk("snd_p16v_pcm called. device=%d\n", device);
601         emu->p16v_device_offset = device;
602         if (rpcm)
603                 *rpcm = NULL;
604
605         if ((err = snd_pcm_new(emu->card, "p16v", device, 1, capture, &pcm)) < 0)
606                 return err;
607   
608         pcm->private_data = emu;
609         // Single playback 8 channel device.
610         // Single capture 2 channel device.
611         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_p16v_playback_front_ops);
612         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_p16v_capture_ops);
613
614         pcm->info_flags = 0;
615         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
616         strcpy(pcm->name, "p16v");
617         emu->pcm_p16v = pcm;
618
619         for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; 
620             substream; 
621             substream = substream->next) {
622                 if ((err = snd_pcm_lib_preallocate_pages(substream, 
623                                                          SNDRV_DMA_TYPE_DEV, 
624                                                          snd_dma_pci_data(emu->pci), 
625                                                          ((65536 - 64) * 8), ((65536 - 64) * 8))) < 0) 
626                         return err;
627                 //snd_printk("preallocate playback substream: err=%d\n", err);
628         }
629
630         for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream; 
631               substream; 
632               substream = substream->next) {
633                 if ((err = snd_pcm_lib_preallocate_pages(substream, 
634                                                    SNDRV_DMA_TYPE_DEV, 
635                                                    snd_dma_pci_data(emu->pci), 
636                                                    65536 - 64, 65536 - 64)) < 0)
637                         return err;
638                 //snd_printk("preallocate capture substream: err=%d\n", err);
639         }
640   
641         if (rpcm)
642                 *rpcm = pcm;
643   
644         return 0;
645 }
646
647 static int snd_p16v_volume_info(struct snd_kcontrol *kcontrol,
648                                 struct snd_ctl_elem_info *uinfo)
649 {
650         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
651         uinfo->count = 2;
652         uinfo->value.integer.min = 0;
653         uinfo->value.integer.max = 255;
654         return 0;
655 }
656
657 static int snd_p16v_volume_get(struct snd_kcontrol *kcontrol,
658                                struct snd_ctl_elem_value *ucontrol)
659 {
660         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
661         int high_low = (kcontrol->private_value >> 8) & 0xff;
662         int reg = kcontrol->private_value & 0xff;
663         u32 value;
664
665         value = snd_emu10k1_ptr20_read(emu, reg, high_low);
666         if (high_low) {
667                 ucontrol->value.integer.value[0] = 0xff - ((value >> 24) & 0xff); /* Left */
668                 ucontrol->value.integer.value[1] = 0xff - ((value >> 16) & 0xff); /* Right */
669         } else {
670                 ucontrol->value.integer.value[0] = 0xff - ((value >> 8) & 0xff); /* Left */
671                 ucontrol->value.integer.value[1] = 0xff - ((value >> 0) & 0xff); /* Right */
672         }
673         return 0;
674 }
675
676 static int snd_p16v_volume_put(struct snd_kcontrol *kcontrol,
677                                struct snd_ctl_elem_value *ucontrol)
678 {
679         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
680         int high_low = (kcontrol->private_value >> 8) & 0xff;
681         int reg = kcontrol->private_value & 0xff;
682         u32 value, oval;
683
684         oval = value = snd_emu10k1_ptr20_read(emu, reg, 0);
685         if (high_low == 1) {
686                 value &= 0xffff;
687                 value |= ((0xff - ucontrol->value.integer.value[0]) << 24) |
688                         ((0xff - ucontrol->value.integer.value[1]) << 16);
689         } else {
690                 value &= 0xffff0000;
691                 value |= ((0xff - ucontrol->value.integer.value[0]) << 8) |
692                         ((0xff - ucontrol->value.integer.value[1]) );
693         }
694         if (value != oval) {
695                 snd_emu10k1_ptr20_write(emu, reg, 0, value);
696                 return 1;
697         }
698         return 0;
699 }
700
701 static int snd_p16v_capture_source_info(struct snd_kcontrol *kcontrol,
702                                         struct snd_ctl_elem_info *uinfo)
703 {
704         static char *texts[8] = {
705                 "SPDIF", "I2S", "SRC48", "SRCMulti_SPDIF", "SRCMulti_I2S",
706                 "CDIF", "FX", "AC97"
707         };
708
709         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
710         uinfo->count = 1;
711         uinfo->value.enumerated.items = 8;
712         if (uinfo->value.enumerated.item > 7)
713                 uinfo->value.enumerated.item = 7;
714         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
715         return 0;
716 }
717
718 static int snd_p16v_capture_source_get(struct snd_kcontrol *kcontrol,
719                                         struct snd_ctl_elem_value *ucontrol)
720 {
721         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
722
723         ucontrol->value.enumerated.item[0] = emu->p16v_capture_source;
724         return 0;
725 }
726
727 static int snd_p16v_capture_source_put(struct snd_kcontrol *kcontrol,
728                                         struct snd_ctl_elem_value *ucontrol)
729 {
730         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
731         unsigned int val;
732         int change = 0;
733         u32 mask;
734         u32 source;
735
736         val = ucontrol->value.enumerated.item[0] ;
737         change = (emu->p16v_capture_source != val);
738         if (change) {
739                 emu->p16v_capture_source = val;
740                 source = (val << 28) | (val << 24) | (val << 20) | (val << 16);
741                 mask = snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & 0xffff;
742                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, source | mask);
743         }
744         return change;
745 }
746
747 static int snd_p16v_capture_channel_info(struct snd_kcontrol *kcontrol,
748                                          struct snd_ctl_elem_info *uinfo)
749 {
750         static char *texts[4] = { "0", "1", "2", "3",  };
751
752         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
753         uinfo->count = 1;
754         uinfo->value.enumerated.items = 4;
755         if (uinfo->value.enumerated.item > 3)
756                 uinfo->value.enumerated.item = 3;
757         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
758         return 0;
759 }
760
761 static int snd_p16v_capture_channel_get(struct snd_kcontrol *kcontrol,
762                                         struct snd_ctl_elem_value *ucontrol)
763 {
764         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
765
766         ucontrol->value.enumerated.item[0] = emu->p16v_capture_channel;
767         return 0;
768 }
769
770 static int snd_p16v_capture_channel_put(struct snd_kcontrol *kcontrol,
771                                         struct snd_ctl_elem_value *ucontrol)
772 {
773         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
774         unsigned int val;
775         int change = 0;
776         u32 tmp;
777
778         val = ucontrol->value.enumerated.item[0] ;
779         change = (emu->p16v_capture_channel != val);
780         if (change) {
781                 emu->p16v_capture_channel = val;
782                 tmp = snd_emu10k1_ptr20_read(emu, CAPTURE_P16V_SOURCE, 0) & 0xfffc;
783                 snd_emu10k1_ptr20_write(emu, CAPTURE_P16V_SOURCE, 0, tmp | val);
784         }
785         return change;
786 }
787
788 #define P16V_VOL(xname,xreg,xhl) { \
789         .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
790         .info = snd_p16v_volume_info, \
791         .get = snd_p16v_volume_get, \
792         .put = snd_p16v_volume_put, \
793         .private_value = ((xreg) | ((xhl) << 8)) \
794 }
795
796 static struct snd_kcontrol_new p16v_mixer_controls[] __devinitdata = {
797         P16V_VOL("HD Analog Front Playback Volume", PLAYBACK_VOLUME_MIXER9, 0),
798         P16V_VOL("HD Analog Rear Playback Volume", PLAYBACK_VOLUME_MIXER10, 1),
799         P16V_VOL("HD Analog Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER9, 1),
800         P16V_VOL("HD Analog Side Playback Volume", PLAYBACK_VOLUME_MIXER10, 0),
801         P16V_VOL("HD SPDIF Front Playback Volume", PLAYBACK_VOLUME_MIXER7, 0),
802         P16V_VOL("HD SPDIF Rear Playback Volume", PLAYBACK_VOLUME_MIXER8, 1),
803         P16V_VOL("HD SPDIF Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER7, 1),
804         P16V_VOL("HD SPDIF Side Playback Volume", PLAYBACK_VOLUME_MIXER8, 0),
805         {
806                 .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
807                 .name =         "HD source Capture",
808                 .info =         snd_p16v_capture_source_info,
809                 .get =          snd_p16v_capture_source_get,
810                 .put =          snd_p16v_capture_source_put
811         },
812         {
813                 .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
814                 .name =         "HD channel Capture",
815                 .info =         snd_p16v_capture_channel_info,
816                 .get =          snd_p16v_capture_channel_get,
817                 .put =          snd_p16v_capture_channel_put
818         },
819 };
820
821
822 int __devinit snd_p16v_mixer(struct snd_emu10k1 *emu)
823 {
824         int i, err;
825         struct snd_card *card = emu->card;
826
827         for (i = 0; i < ARRAY_SIZE(p16v_mixer_controls); i++) {
828                 if ((err = snd_ctl_add(card, snd_ctl_new1(&p16v_mixer_controls[i],
829                                                           emu))) < 0)
830                         return err;
831         }
832         return 0;
833 }
834
835 #ifdef CONFIG_PM
836
837 #define NUM_CHS 1       /* up to 4, but only first channel is used */
838
839 int __devinit snd_p16v_alloc_pm_buffer(struct snd_emu10k1 *emu)
840 {
841         emu->p16v_saved = vmalloc(NUM_CHS * 4 * 0x80);
842         if (! emu->p16v_saved)
843                 return -ENOMEM;
844         return 0;
845 }
846
847 void snd_p16v_free_pm_buffer(struct snd_emu10k1 *emu)
848 {
849         vfree(emu->p16v_saved);
850 }
851
852 void snd_p16v_suspend(struct snd_emu10k1 *emu)
853 {
854         int i, ch;
855         unsigned int *val;
856
857         val = emu->p16v_saved;
858         for (ch = 0; ch < NUM_CHS; ch++)
859                 for (i = 0; i < 0x80; i++, val++)
860                         *val = snd_emu10k1_ptr20_read(emu, i, ch);
861 }
862
863 void snd_p16v_resume(struct snd_emu10k1 *emu)
864 {
865         int i, ch;
866         unsigned int *val;
867
868         val = emu->p16v_saved;
869         for (ch = 0; ch < NUM_CHS; ch++)
870                 for (i = 0; i < 0x80; i++, val++)
871                         snd_emu10k1_ptr20_write(emu, i, ch, *val);
872 }
873 #endif