xref: /openbmc/linux/sound/pci/emu10k1/p16v.c (revision 8730046c)
1 /*
2  *  Copyright (c) by James Courtier-Dutton <James@superbug.demon.co.uk>
3  *  Driver p16v chips
4  *  Version: 0.25
5  *
6  *  FEATURES currently supported:
7  *    Output fixed at S32_LE, 2 channel to hw:0,0
8  *    Rates: 44.1, 48, 96, 192.
9  *
10  *  Changelog:
11  *  0.8
12  *    Use separate card based buffer for periods table.
13  *  0.9
14  *    Use 2 channel output streams instead of 8 channel.
15  *       (8 channel output streams might be good for ASIO type output)
16  *    Corrected speaker output, so Front -> Front etc.
17  *  0.10
18  *    Fixed missed interrupts.
19  *  0.11
20  *    Add Sound card model number and names.
21  *    Add Analog volume controls.
22  *  0.12
23  *    Corrected playback interrupts. Now interrupt per period, instead of half period.
24  *  0.13
25  *    Use single trigger for multichannel.
26  *  0.14
27  *    Mic capture now works at fixed: S32_LE, 96000Hz, Stereo.
28  *  0.15
29  *    Force buffer_size / period_size == INTEGER.
30  *  0.16
31  *    Update p16v.c to work with changed alsa api.
32  *  0.17
33  *    Update p16v.c to work with changed alsa api. Removed boot_devs.
34  *  0.18
35  *    Merging with snd-emu10k1 driver.
36  *  0.19
37  *    One stereo channel at 24bit now works.
38  *  0.20
39  *    Added better register defines.
40  *  0.21
41  *    Integrated with snd-emu10k1 driver.
42  *  0.22
43  *    Removed #if 0 ... #endif
44  *  0.23
45  *    Implement different capture rates.
46  *  0.24
47  *    Implement different capture source channels.
48  *    e.g. When HD Capture source is set to SPDIF,
49  *    setting HD Capture channel to 0 captures from CDROM digital input.
50  *    setting HD Capture channel to 1 captures from SPDIF in.
51  *  0.25
52  *    Include capture buffer sizes.
53  *
54  *  BUGS:
55  *    Some stability problems when unloading the snd-p16v kernel module.
56  *    --
57  *
58  *  TODO:
59  *    SPDIF out.
60  *    Find out how to change capture sample rates. E.g. To record SPDIF at 48000Hz.
61  *    Currently capture fixed at 48000Hz.
62  *
63  *    --
64  *  GENERAL INFO:
65  *    Model: SB0240
66  *    P16V Chip: CA0151-DBS
67  *    Audigy 2 Chip: CA0102-IAT
68  *    AC97 Codec: STAC 9721
69  *    ADC: Philips 1361T (Stereo 24bit)
70  *    DAC: CS4382-K (8-channel, 24bit, 192Khz)
71  *
72  *  This code was initially based on code from ALSA's emu10k1x.c which is:
73  *  Copyright (c) by Francisco Moraes <fmoraes@nc.rr.com>
74  *
75  *   This program is free software; you can redistribute it and/or modify
76  *   it under the terms of the GNU General Public License as published by
77  *   the Free Software Foundation; either version 2 of the License, or
78  *   (at your option) any later version.
79  *
80  *   This program is distributed in the hope that it will be useful,
81  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
82  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
83  *   GNU General Public License for more details.
84  *
85  *   You should have received a copy of the GNU General Public License
86  *   along with this program; if not, write to the Free Software
87  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
88  *
89  */
90 #include <linux/delay.h>
91 #include <linux/init.h>
92 #include <linux/interrupt.h>
93 #include <linux/pci.h>
94 #include <linux/slab.h>
95 #include <linux/vmalloc.h>
96 #include <linux/moduleparam.h>
97 #include <sound/core.h>
98 #include <sound/initval.h>
99 #include <sound/pcm.h>
100 #include <sound/ac97_codec.h>
101 #include <sound/info.h>
102 #include <sound/tlv.h>
103 #include <sound/emu10k1.h>
104 #include "p16v.h"
105 
106 #define SET_CHANNEL 0  /* Testing channel outputs 0=Front, 1=Center/LFE, 2=Unknown, 3=Rear */
107 #define PCM_FRONT_CHANNEL 0
108 #define PCM_REAR_CHANNEL 1
109 #define PCM_CENTER_LFE_CHANNEL 2
110 #define PCM_SIDE_CHANNEL 3
111 #define CONTROL_FRONT_CHANNEL 0
112 #define CONTROL_REAR_CHANNEL 3
113 #define CONTROL_CENTER_LFE_CHANNEL 1
114 #define CONTROL_SIDE_CHANNEL 2
115 
116 /* Card IDs:
117  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:2002 -> Audigy2 ZS 7.1 Model:SB0350
118  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:1007 -> Audigy2 6.1    Model:SB0240
119  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:1002 -> Audigy2 Platinum  Model:SB msb0240230009266
120  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:2007 -> Audigy4 Pro Model:SB0380 M1SB0380472001901E
121  *
122  */
123 
124  /* hardware definition */
125 static struct snd_pcm_hardware snd_p16v_playback_hw = {
126 	.info =			SNDRV_PCM_INFO_MMAP |
127 				SNDRV_PCM_INFO_INTERLEAVED |
128 				SNDRV_PCM_INFO_BLOCK_TRANSFER |
129 				SNDRV_PCM_INFO_RESUME |
130 				SNDRV_PCM_INFO_MMAP_VALID |
131 				SNDRV_PCM_INFO_SYNC_START,
132 	.formats =		SNDRV_PCM_FMTBIT_S32_LE, /* Only supports 24-bit samples padded to 32 bits. */
133 	.rates =		SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100,
134 	.rate_min =		44100,
135 	.rate_max =		192000,
136 	.channels_min =		8,
137 	.channels_max =		8,
138 	.buffer_bytes_max =	((65536 - 64) * 8),
139 	.period_bytes_min =	64,
140 	.period_bytes_max =	(65536 - 64),
141 	.periods_min =		2,
142 	.periods_max =		8,
143 	.fifo_size =		0,
144 };
145 
146 static struct snd_pcm_hardware snd_p16v_capture_hw = {
147 	.info =			(SNDRV_PCM_INFO_MMAP |
148 				 SNDRV_PCM_INFO_INTERLEAVED |
149 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
150 				 SNDRV_PCM_INFO_RESUME |
151 				 SNDRV_PCM_INFO_MMAP_VALID),
152 	.formats =		SNDRV_PCM_FMTBIT_S32_LE,
153 	.rates =		SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100,
154 	.rate_min =		44100,
155 	.rate_max =		192000,
156 	.channels_min =		2,
157 	.channels_max =		2,
158 	.buffer_bytes_max =	(65536 - 64),
159 	.period_bytes_min =	64,
160 	.period_bytes_max =	(65536 - 128) >> 1,  /* size has to be N*64 bytes */
161 	.periods_min =		2,
162 	.periods_max =		2,
163 	.fifo_size =		0,
164 };
165 
166 static void snd_p16v_pcm_free_substream(struct snd_pcm_runtime *runtime)
167 {
168 	struct snd_emu10k1_pcm *epcm = runtime->private_data;
169 
170 	kfree(epcm);
171 }
172 
173 /* open_playback callback */
174 static int snd_p16v_pcm_open_playback_channel(struct snd_pcm_substream *substream, int channel_id)
175 {
176 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
177         struct snd_emu10k1_voice *channel = &(emu->p16v_voices[channel_id]);
178 	struct snd_emu10k1_pcm *epcm;
179 	struct snd_pcm_runtime *runtime = substream->runtime;
180 	int err;
181 
182 	epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
183 	/* dev_dbg(emu->card->dev, "epcm kcalloc: %p\n", epcm); */
184 
185 	if (epcm == NULL)
186 		return -ENOMEM;
187 	epcm->emu = emu;
188 	epcm->substream = substream;
189 	/*
190 	dev_dbg(emu->card->dev, "epcm device=%d, channel_id=%d\n",
191 		   substream->pcm->device, channel_id);
192 	*/
193 	runtime->private_data = epcm;
194 	runtime->private_free = snd_p16v_pcm_free_substream;
195 
196 	runtime->hw = snd_p16v_playback_hw;
197 
198         channel->emu = emu;
199         channel->number = channel_id;
200 
201         channel->use=1;
202 #if 0 /* debug */
203 	dev_dbg(emu->card->dev,
204 		   "p16v: open channel_id=%d, channel=%p, use=0x%x\n",
205 		   channel_id, channel, channel->use);
206 	dev_dbg(emu->card->dev, "open:channel_id=%d, chip=%p, channel=%p\n",
207 	       channel_id, chip, channel);
208 #endif /* debug */
209 	/* channel->interrupt = snd_p16v_pcm_channel_interrupt; */
210 	channel->epcm = epcm;
211 	if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
212                 return err;
213 
214 	runtime->sync.id32[0] = substream->pcm->card->number;
215 	runtime->sync.id32[1] = 'P';
216 	runtime->sync.id32[2] = 16;
217 	runtime->sync.id32[3] = 'V';
218 
219 	return 0;
220 }
221 /* open_capture callback */
222 static int snd_p16v_pcm_open_capture_channel(struct snd_pcm_substream *substream, int channel_id)
223 {
224 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
225 	struct snd_emu10k1_voice *channel = &(emu->p16v_capture_voice);
226 	struct snd_emu10k1_pcm *epcm;
227 	struct snd_pcm_runtime *runtime = substream->runtime;
228 	int err;
229 
230 	epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
231 	/* dev_dbg(emu->card->dev, "epcm kcalloc: %p\n", epcm); */
232 
233 	if (epcm == NULL)
234 		return -ENOMEM;
235 	epcm->emu = emu;
236 	epcm->substream = substream;
237 	/*
238 	dev_dbg(emu->card->dev, "epcm device=%d, channel_id=%d\n",
239 		   substream->pcm->device, channel_id);
240 	*/
241 	runtime->private_data = epcm;
242 	runtime->private_free = snd_p16v_pcm_free_substream;
243 
244 	runtime->hw = snd_p16v_capture_hw;
245 
246 	channel->emu = emu;
247 	channel->number = channel_id;
248 
249 	channel->use=1;
250 #if 0 /* debug */
251 	dev_dbg(emu->card->dev,
252 		   "p16v: open channel_id=%d, channel=%p, use=0x%x\n",
253 		   channel_id, channel, channel->use);
254 	dev_dbg(emu->card->dev, "open:channel_id=%d, chip=%p, channel=%p\n",
255 	       channel_id, chip, channel);
256 #endif /* debug */
257 	/* channel->interrupt = snd_p16v_pcm_channel_interrupt; */
258 	channel->epcm = epcm;
259 	if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
260 		return err;
261 
262 	return 0;
263 }
264 
265 
266 /* close callback */
267 static int snd_p16v_pcm_close_playback(struct snd_pcm_substream *substream)
268 {
269 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
270 	//struct snd_pcm_runtime *runtime = substream->runtime;
271 	//struct snd_emu10k1_pcm *epcm = runtime->private_data;
272 	emu->p16v_voices[substream->pcm->device - emu->p16v_device_offset].use = 0;
273 	/* FIXME: maybe zero others */
274 	return 0;
275 }
276 
277 /* close callback */
278 static int snd_p16v_pcm_close_capture(struct snd_pcm_substream *substream)
279 {
280 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
281 	//struct snd_pcm_runtime *runtime = substream->runtime;
282 	//struct snd_emu10k1_pcm *epcm = runtime->private_data;
283 	emu->p16v_capture_voice.use = 0;
284 	/* FIXME: maybe zero others */
285 	return 0;
286 }
287 
288 static int snd_p16v_pcm_open_playback_front(struct snd_pcm_substream *substream)
289 {
290 	return snd_p16v_pcm_open_playback_channel(substream, PCM_FRONT_CHANNEL);
291 }
292 
293 static int snd_p16v_pcm_open_capture(struct snd_pcm_substream *substream)
294 {
295 	// Only using channel 0 for now, but the card has 2 channels.
296 	return snd_p16v_pcm_open_capture_channel(substream, 0);
297 }
298 
299 /* hw_params callback */
300 static int snd_p16v_pcm_hw_params_playback(struct snd_pcm_substream *substream,
301 				      struct snd_pcm_hw_params *hw_params)
302 {
303 	return snd_pcm_lib_malloc_pages(substream,
304 					params_buffer_bytes(hw_params));
305 }
306 
307 /* hw_params callback */
308 static int snd_p16v_pcm_hw_params_capture(struct snd_pcm_substream *substream,
309 				      struct snd_pcm_hw_params *hw_params)
310 {
311 	return snd_pcm_lib_malloc_pages(substream,
312 					params_buffer_bytes(hw_params));
313 }
314 
315 
316 /* hw_free callback */
317 static int snd_p16v_pcm_hw_free_playback(struct snd_pcm_substream *substream)
318 {
319 	return snd_pcm_lib_free_pages(substream);
320 }
321 
322 /* hw_free callback */
323 static int snd_p16v_pcm_hw_free_capture(struct snd_pcm_substream *substream)
324 {
325 	return snd_pcm_lib_free_pages(substream);
326 }
327 
328 
329 /* prepare playback callback */
330 static int snd_p16v_pcm_prepare_playback(struct snd_pcm_substream *substream)
331 {
332 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
333 	struct snd_pcm_runtime *runtime = substream->runtime;
334 	int channel = substream->pcm->device - emu->p16v_device_offset;
335 	u32 *table_base = (u32 *)(emu->p16v_buffer.area+(8*16*channel));
336 	u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
337 	int i;
338 	u32 tmp;
339 
340 #if 0 /* debug */
341 	dev_dbg(emu->card->dev,
342 		"prepare:channel_number=%d, rate=%d, "
343 		   "format=0x%x, channels=%d, buffer_size=%ld, "
344 		   "period_size=%ld, periods=%u, frames_to_bytes=%d\n",
345 		   channel, runtime->rate, runtime->format, runtime->channels,
346 		   runtime->buffer_size, runtime->period_size,
347 		   runtime->periods, frames_to_bytes(runtime, 1));
348 	dev_dbg(emu->card->dev,
349 		"dma_addr=%x, dma_area=%p, table_base=%p\n",
350 		   runtime->dma_addr, runtime->dma_area, table_base);
351 	dev_dbg(emu->card->dev,
352 		"dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",
353 		   emu->p16v_buffer.addr, emu->p16v_buffer.area,
354 		   emu->p16v_buffer.bytes);
355 #endif /* debug */
356 	tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
357         switch (runtime->rate) {
358 	case 44100:
359 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x8080);
360 	  break;
361 	case 96000:
362 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x4040);
363 	  break;
364 	case 192000:
365 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x2020);
366 	  break;
367 	case 48000:
368 	default:
369 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x0000);
370 	  break;
371 	}
372 	/* FIXME: Check emu->buffer.size before actually writing to it. */
373 	for(i = 0; i < runtime->periods; i++) {
374 		table_base[i*2]=runtime->dma_addr+(i*period_size_bytes);
375 		table_base[(i*2)+1]=period_size_bytes<<16;
376 	}
377 
378 	snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_ADDR, channel, emu->p16v_buffer.addr+(8*16*channel));
379 	snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19);
380 	snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_PTR, channel, 0);
381 	snd_emu10k1_ptr20_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr);
382 	//snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes
383 	snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, 0); // buffer size in bytes
384 	snd_emu10k1_ptr20_write(emu, PLAYBACK_POINTER, channel, 0);
385 	snd_emu10k1_ptr20_write(emu, 0x07, channel, 0x0);
386 	snd_emu10k1_ptr20_write(emu, 0x08, channel, 0);
387 
388 	return 0;
389 }
390 
391 /* prepare capture callback */
392 static int snd_p16v_pcm_prepare_capture(struct snd_pcm_substream *substream)
393 {
394 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
395 	struct snd_pcm_runtime *runtime = substream->runtime;
396 	int channel = substream->pcm->device - emu->p16v_device_offset;
397 	u32 tmp;
398 
399 	/*
400 	dev_dbg(emu->card->dev, "prepare capture:channel_number=%d, rate=%d, "
401 	       "format=0x%x, channels=%d, buffer_size=%ld, period_size=%ld, "
402 	       "frames_to_bytes=%d\n",
403 	       channel, runtime->rate, runtime->format, runtime->channels,
404 	       runtime->buffer_size, runtime->period_size,
405 	       frames_to_bytes(runtime, 1));
406 	*/
407 	tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
408         switch (runtime->rate) {
409 	case 44100:
410 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0800);
411 	  break;
412 	case 96000:
413 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0400);
414 	  break;
415 	case 192000:
416 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0200);
417 	  break;
418 	case 48000:
419 	default:
420 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0000);
421 	  break;
422 	}
423 	/* FIXME: Check emu->buffer.size before actually writing to it. */
424 	snd_emu10k1_ptr20_write(emu, 0x13, channel, 0);
425 	snd_emu10k1_ptr20_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);
426 	snd_emu10k1_ptr20_write(emu, CAPTURE_BUFFER_SIZE, channel, frames_to_bytes(runtime, runtime->buffer_size) << 16); // buffer size in bytes
427 	snd_emu10k1_ptr20_write(emu, CAPTURE_POINTER, channel, 0);
428 	//snd_emu10k1_ptr20_write(emu, CAPTURE_SOURCE, 0x0, 0x333300e4); /* Select MIC or Line in */
429 	//snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) | (0x110000<<channel));
430 
431 	return 0;
432 }
433 
434 static void snd_p16v_intr_enable(struct snd_emu10k1 *emu, unsigned int intrenb)
435 {
436 	unsigned long flags;
437 	unsigned int enable;
438 
439 	spin_lock_irqsave(&emu->emu_lock, flags);
440 	enable = inl(emu->port + INTE2) | intrenb;
441 	outl(enable, emu->port + INTE2);
442 	spin_unlock_irqrestore(&emu->emu_lock, flags);
443 }
444 
445 static void snd_p16v_intr_disable(struct snd_emu10k1 *emu, unsigned int intrenb)
446 {
447 	unsigned long flags;
448 	unsigned int disable;
449 
450 	spin_lock_irqsave(&emu->emu_lock, flags);
451 	disable = inl(emu->port + INTE2) & (~intrenb);
452 	outl(disable, emu->port + INTE2);
453 	spin_unlock_irqrestore(&emu->emu_lock, flags);
454 }
455 
456 /* trigger_playback callback */
457 static int snd_p16v_pcm_trigger_playback(struct snd_pcm_substream *substream,
458 				    int cmd)
459 {
460 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
461 	struct snd_pcm_runtime *runtime;
462 	struct snd_emu10k1_pcm *epcm;
463 	int channel;
464 	int result = 0;
465         struct snd_pcm_substream *s;
466 	u32 basic = 0;
467 	u32 inte = 0;
468 	int running = 0;
469 
470 	switch (cmd) {
471 	case SNDRV_PCM_TRIGGER_START:
472 		running=1;
473 		break;
474 	case SNDRV_PCM_TRIGGER_STOP:
475 	default:
476 		running = 0;
477 		break;
478 	}
479         snd_pcm_group_for_each_entry(s, substream) {
480 		if (snd_pcm_substream_chip(s) != emu ||
481 		    s->stream != SNDRV_PCM_STREAM_PLAYBACK)
482 			continue;
483 		runtime = s->runtime;
484 		epcm = runtime->private_data;
485 		channel = substream->pcm->device-emu->p16v_device_offset;
486 		/* dev_dbg(emu->card->dev, "p16v channel=%d\n", channel); */
487 		epcm->running = running;
488 		basic |= (0x1<<channel);
489 		inte |= (INTE2_PLAYBACK_CH_0_LOOP<<channel);
490                 snd_pcm_trigger_done(s, substream);
491         }
492 	/* dev_dbg(emu->card->dev, "basic=0x%x, inte=0x%x\n", basic, inte); */
493 
494 	switch (cmd) {
495 	case SNDRV_PCM_TRIGGER_START:
496 		snd_p16v_intr_enable(emu, inte);
497 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)| (basic));
498 		break;
499 	case SNDRV_PCM_TRIGGER_STOP:
500 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(basic));
501 		snd_p16v_intr_disable(emu, inte);
502 		break;
503 	default:
504 		result = -EINVAL;
505 		break;
506 	}
507 	return result;
508 }
509 
510 /* trigger_capture callback */
511 static int snd_p16v_pcm_trigger_capture(struct snd_pcm_substream *substream,
512                                    int cmd)
513 {
514 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
515 	struct snd_pcm_runtime *runtime = substream->runtime;
516 	struct snd_emu10k1_pcm *epcm = runtime->private_data;
517 	int channel = 0;
518 	int result = 0;
519 	u32 inte = INTE2_CAPTURE_CH_0_LOOP | INTE2_CAPTURE_CH_0_HALF_LOOP;
520 
521 	switch (cmd) {
522 	case SNDRV_PCM_TRIGGER_START:
523 		snd_p16v_intr_enable(emu, inte);
524 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)|(0x100<<channel));
525 		epcm->running = 1;
526 		break;
527 	case SNDRV_PCM_TRIGGER_STOP:
528 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(0x100<<channel));
529 		snd_p16v_intr_disable(emu, inte);
530 		//snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) & ~(0x110000<<channel));
531 		epcm->running = 0;
532 		break;
533 	default:
534 		result = -EINVAL;
535 		break;
536 	}
537 	return result;
538 }
539 
540 /* pointer_playback callback */
541 static snd_pcm_uframes_t
542 snd_p16v_pcm_pointer_playback(struct snd_pcm_substream *substream)
543 {
544 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
545 	struct snd_pcm_runtime *runtime = substream->runtime;
546 	struct snd_emu10k1_pcm *epcm = runtime->private_data;
547 	snd_pcm_uframes_t ptr, ptr1, ptr2,ptr3,ptr4 = 0;
548 	int channel = substream->pcm->device - emu->p16v_device_offset;
549 	if (!epcm->running)
550 		return 0;
551 
552 	ptr3 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
553 	ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
554 	ptr4 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
555 	if (ptr3 != ptr4) ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
556 	ptr2 = bytes_to_frames(runtime, ptr1);
557 	ptr2+= (ptr4 >> 3) * runtime->period_size;
558 	ptr=ptr2;
559         if (ptr >= runtime->buffer_size)
560 		ptr -= runtime->buffer_size;
561 
562 	return ptr;
563 }
564 
565 /* pointer_capture callback */
566 static snd_pcm_uframes_t
567 snd_p16v_pcm_pointer_capture(struct snd_pcm_substream *substream)
568 {
569 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
570 	struct snd_pcm_runtime *runtime = substream->runtime;
571 	struct snd_emu10k1_pcm *epcm = runtime->private_data;
572 	snd_pcm_uframes_t ptr, ptr1, ptr2 = 0;
573 	int channel = 0;
574 
575 	if (!epcm->running)
576 		return 0;
577 
578 	ptr1 = snd_emu10k1_ptr20_read(emu, CAPTURE_POINTER, channel);
579 	ptr2 = bytes_to_frames(runtime, ptr1);
580 	ptr=ptr2;
581 	if (ptr >= runtime->buffer_size) {
582 		ptr -= runtime->buffer_size;
583 		dev_warn(emu->card->dev, "buffer capture limited!\n");
584 	}
585 	/*
586 	dev_dbg(emu->card->dev, "ptr1 = 0x%lx, ptr2=0x%lx, ptr=0x%lx, "
587 	       "buffer_size = 0x%x, period_size = 0x%x, bits=%d, rate=%d\n",
588 	       ptr1, ptr2, ptr, (int)runtime->buffer_size,
589 	       (int)runtime->period_size, (int)runtime->frame_bits,
590 	       (int)runtime->rate);
591 	*/
592 	return ptr;
593 }
594 
595 /* operators */
596 static const struct snd_pcm_ops snd_p16v_playback_front_ops = {
597 	.open =        snd_p16v_pcm_open_playback_front,
598 	.close =       snd_p16v_pcm_close_playback,
599 	.ioctl =       snd_pcm_lib_ioctl,
600 	.hw_params =   snd_p16v_pcm_hw_params_playback,
601 	.hw_free =     snd_p16v_pcm_hw_free_playback,
602 	.prepare =     snd_p16v_pcm_prepare_playback,
603 	.trigger =     snd_p16v_pcm_trigger_playback,
604 	.pointer =     snd_p16v_pcm_pointer_playback,
605 };
606 
607 static const struct snd_pcm_ops snd_p16v_capture_ops = {
608 	.open =        snd_p16v_pcm_open_capture,
609 	.close =       snd_p16v_pcm_close_capture,
610 	.ioctl =       snd_pcm_lib_ioctl,
611 	.hw_params =   snd_p16v_pcm_hw_params_capture,
612 	.hw_free =     snd_p16v_pcm_hw_free_capture,
613 	.prepare =     snd_p16v_pcm_prepare_capture,
614 	.trigger =     snd_p16v_pcm_trigger_capture,
615 	.pointer =     snd_p16v_pcm_pointer_capture,
616 };
617 
618 
619 int snd_p16v_free(struct snd_emu10k1 *chip)
620 {
621 	// release the data
622 	if (chip->p16v_buffer.area) {
623 		snd_dma_free_pages(&chip->p16v_buffer);
624 		/*
625 		dev_dbg(chip->card->dev, "period lables free: %p\n",
626 			   &chip->p16v_buffer);
627 		*/
628 	}
629 	return 0;
630 }
631 
632 int snd_p16v_pcm(struct snd_emu10k1 *emu, int device)
633 {
634 	struct snd_pcm *pcm;
635 	struct snd_pcm_substream *substream;
636 	int err;
637         int capture=1;
638 
639 	/* dev_dbg(emu->card->dev, "snd_p16v_pcm called. device=%d\n", device); */
640 	emu->p16v_device_offset = device;
641 
642 	if ((err = snd_pcm_new(emu->card, "p16v", device, 1, capture, &pcm)) < 0)
643 		return err;
644 
645 	pcm->private_data = emu;
646 	// Single playback 8 channel device.
647 	// Single capture 2 channel device.
648 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_p16v_playback_front_ops);
649 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_p16v_capture_ops);
650 
651 	pcm->info_flags = 0;
652 	pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
653 	strcpy(pcm->name, "p16v");
654 	emu->pcm_p16v = pcm;
655 
656 	for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
657 	    substream;
658 	    substream = substream->next) {
659 		if ((err = snd_pcm_lib_preallocate_pages(substream,
660 							 SNDRV_DMA_TYPE_DEV,
661 							 snd_dma_pci_data(emu->pci),
662 							 ((65536 - 64) * 8), ((65536 - 64) * 8))) < 0)
663 			return err;
664 		/*
665 		dev_dbg(emu->card->dev,
666 			   "preallocate playback substream: err=%d\n", err);
667 		*/
668 	}
669 
670 	for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
671 	      substream;
672 	      substream = substream->next) {
673  		if ((err = snd_pcm_lib_preallocate_pages(substream,
674 	                                           SNDRV_DMA_TYPE_DEV,
675 	                                           snd_dma_pci_data(emu->pci),
676 	                                           65536 - 64, 65536 - 64)) < 0)
677 			return err;
678 		/*
679 		dev_dbg(emu->card->dev,
680 			   "preallocate capture substream: err=%d\n", err);
681 		*/
682 	}
683 
684 	return 0;
685 }
686 
687 static int snd_p16v_volume_info(struct snd_kcontrol *kcontrol,
688 				struct snd_ctl_elem_info *uinfo)
689 {
690         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
691         uinfo->count = 2;
692         uinfo->value.integer.min = 0;
693         uinfo->value.integer.max = 255;
694         return 0;
695 }
696 
697 static int snd_p16v_volume_get(struct snd_kcontrol *kcontrol,
698 			       struct snd_ctl_elem_value *ucontrol)
699 {
700         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
701 	int high_low = (kcontrol->private_value >> 8) & 0xff;
702 	int reg = kcontrol->private_value & 0xff;
703 	u32 value;
704 
705 	value = snd_emu10k1_ptr20_read(emu, reg, high_low);
706 	if (high_low) {
707 		ucontrol->value.integer.value[0] = 0xff - ((value >> 24) & 0xff); /* Left */
708 		ucontrol->value.integer.value[1] = 0xff - ((value >> 16) & 0xff); /* Right */
709 	} else {
710 		ucontrol->value.integer.value[0] = 0xff - ((value >> 8) & 0xff); /* Left */
711 		ucontrol->value.integer.value[1] = 0xff - ((value >> 0) & 0xff); /* Right */
712 	}
713 	return 0;
714 }
715 
716 static int snd_p16v_volume_put(struct snd_kcontrol *kcontrol,
717 			       struct snd_ctl_elem_value *ucontrol)
718 {
719         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
720 	int high_low = (kcontrol->private_value >> 8) & 0xff;
721 	int reg = kcontrol->private_value & 0xff;
722         u32 value, oval;
723 
724 	oval = value = snd_emu10k1_ptr20_read(emu, reg, 0);
725 	if (high_low == 1) {
726 		value &= 0xffff;
727 		value |= ((0xff - ucontrol->value.integer.value[0]) << 24) |
728 			((0xff - ucontrol->value.integer.value[1]) << 16);
729 	} else {
730 		value &= 0xffff0000;
731 		value |= ((0xff - ucontrol->value.integer.value[0]) << 8) |
732 			((0xff - ucontrol->value.integer.value[1]) );
733 	}
734 	if (value != oval) {
735 		snd_emu10k1_ptr20_write(emu, reg, 0, value);
736 		return 1;
737 	}
738 	return 0;
739 }
740 
741 static int snd_p16v_capture_source_info(struct snd_kcontrol *kcontrol,
742 					struct snd_ctl_elem_info *uinfo)
743 {
744 	static const char * const texts[8] = {
745 		"SPDIF", "I2S", "SRC48", "SRCMulti_SPDIF", "SRCMulti_I2S",
746 		"CDIF", "FX", "AC97"
747 	};
748 
749 	return snd_ctl_enum_info(uinfo, 1, 8, texts);
750 }
751 
752 static int snd_p16v_capture_source_get(struct snd_kcontrol *kcontrol,
753 					struct snd_ctl_elem_value *ucontrol)
754 {
755 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
756 
757 	ucontrol->value.enumerated.item[0] = emu->p16v_capture_source;
758 	return 0;
759 }
760 
761 static int snd_p16v_capture_source_put(struct snd_kcontrol *kcontrol,
762 					struct snd_ctl_elem_value *ucontrol)
763 {
764 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
765 	unsigned int val;
766 	int change = 0;
767 	u32 mask;
768 	u32 source;
769 
770 	val = ucontrol->value.enumerated.item[0] ;
771 	if (val > 7)
772 		return -EINVAL;
773 	change = (emu->p16v_capture_source != val);
774 	if (change) {
775 		emu->p16v_capture_source = val;
776 		source = (val << 28) | (val << 24) | (val << 20) | (val << 16);
777 		mask = snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & 0xffff;
778 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, source | mask);
779 	}
780         return change;
781 }
782 
783 static int snd_p16v_capture_channel_info(struct snd_kcontrol *kcontrol,
784 					 struct snd_ctl_elem_info *uinfo)
785 {
786 	static const char * const texts[4] = { "0", "1", "2", "3", };
787 
788 	return snd_ctl_enum_info(uinfo, 1, 4, texts);
789 }
790 
791 static int snd_p16v_capture_channel_get(struct snd_kcontrol *kcontrol,
792 					struct snd_ctl_elem_value *ucontrol)
793 {
794 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
795 
796 	ucontrol->value.enumerated.item[0] = emu->p16v_capture_channel;
797 	return 0;
798 }
799 
800 static int snd_p16v_capture_channel_put(struct snd_kcontrol *kcontrol,
801 					struct snd_ctl_elem_value *ucontrol)
802 {
803 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
804 	unsigned int val;
805 	int change = 0;
806 	u32 tmp;
807 
808 	val = ucontrol->value.enumerated.item[0] ;
809 	if (val > 3)
810 		return -EINVAL;
811 	change = (emu->p16v_capture_channel != val);
812 	if (change) {
813 		emu->p16v_capture_channel = val;
814 		tmp = snd_emu10k1_ptr20_read(emu, CAPTURE_P16V_SOURCE, 0) & 0xfffc;
815 		snd_emu10k1_ptr20_write(emu, CAPTURE_P16V_SOURCE, 0, tmp | val);
816 	}
817         return change;
818 }
819 static const DECLARE_TLV_DB_SCALE(snd_p16v_db_scale1, -5175, 25, 1);
820 
821 #define P16V_VOL(xname,xreg,xhl) { \
822 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
823         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |             \
824                   SNDRV_CTL_ELEM_ACCESS_TLV_READ,               \
825 	.info = snd_p16v_volume_info, \
826 	.get = snd_p16v_volume_get, \
827 	.put = snd_p16v_volume_put, \
828 	.tlv = { .p = snd_p16v_db_scale1 },	\
829 	.private_value = ((xreg) | ((xhl) << 8)) \
830 }
831 
832 static struct snd_kcontrol_new p16v_mixer_controls[] = {
833 	P16V_VOL("HD Analog Front Playback Volume", PLAYBACK_VOLUME_MIXER9, 0),
834 	P16V_VOL("HD Analog Rear Playback Volume", PLAYBACK_VOLUME_MIXER10, 1),
835 	P16V_VOL("HD Analog Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER9, 1),
836 	P16V_VOL("HD Analog Side Playback Volume", PLAYBACK_VOLUME_MIXER10, 0),
837 	P16V_VOL("HD SPDIF Front Playback Volume", PLAYBACK_VOLUME_MIXER7, 0),
838 	P16V_VOL("HD SPDIF Rear Playback Volume", PLAYBACK_VOLUME_MIXER8, 1),
839 	P16V_VOL("HD SPDIF Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER7, 1),
840 	P16V_VOL("HD SPDIF Side Playback Volume", PLAYBACK_VOLUME_MIXER8, 0),
841 	{
842 		.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
843 		.name =		"HD source Capture",
844 		.info =		snd_p16v_capture_source_info,
845 		.get =		snd_p16v_capture_source_get,
846 		.put =		snd_p16v_capture_source_put
847 	},
848 	{
849 		.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
850 		.name =		"HD channel Capture",
851 		.info =		snd_p16v_capture_channel_info,
852 		.get =		snd_p16v_capture_channel_get,
853 		.put =		snd_p16v_capture_channel_put
854 	},
855 };
856 
857 
858 int snd_p16v_mixer(struct snd_emu10k1 *emu)
859 {
860 	int i, err;
861         struct snd_card *card = emu->card;
862 
863 	for (i = 0; i < ARRAY_SIZE(p16v_mixer_controls); i++) {
864 		if ((err = snd_ctl_add(card, snd_ctl_new1(&p16v_mixer_controls[i],
865 							  emu))) < 0)
866 			return err;
867 	}
868         return 0;
869 }
870 
871 #ifdef CONFIG_PM_SLEEP
872 
873 #define NUM_CHS	1	/* up to 4, but only first channel is used */
874 
875 int snd_p16v_alloc_pm_buffer(struct snd_emu10k1 *emu)
876 {
877 	emu->p16v_saved = vmalloc(NUM_CHS * 4 * 0x80);
878 	if (! emu->p16v_saved)
879 		return -ENOMEM;
880 	return 0;
881 }
882 
883 void snd_p16v_free_pm_buffer(struct snd_emu10k1 *emu)
884 {
885 	vfree(emu->p16v_saved);
886 }
887 
888 void snd_p16v_suspend(struct snd_emu10k1 *emu)
889 {
890 	int i, ch;
891 	unsigned int *val;
892 
893 	val = emu->p16v_saved;
894 	for (ch = 0; ch < NUM_CHS; ch++)
895 		for (i = 0; i < 0x80; i++, val++)
896 			*val = snd_emu10k1_ptr20_read(emu, i, ch);
897 }
898 
899 void snd_p16v_resume(struct snd_emu10k1 *emu)
900 {
901 	int i, ch;
902 	unsigned int *val;
903 
904 	val = emu->p16v_saved;
905 	for (ch = 0; ch < NUM_CHS; ch++)
906 		for (i = 0; i < 0x80; i++, val++)
907 			snd_emu10k1_ptr20_write(emu, i, ch, *val);
908 }
909 #endif
910