xref: /openbmc/linux/sound/pci/emu10k1/p16v.c (revision cc8bbe1a)
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 	int result;
304 	result = snd_pcm_lib_malloc_pages(substream,
305 					params_buffer_bytes(hw_params));
306 	return result;
307 }
308 
309 /* hw_params callback */
310 static int snd_p16v_pcm_hw_params_capture(struct snd_pcm_substream *substream,
311 				      struct snd_pcm_hw_params *hw_params)
312 {
313 	int result;
314 	result = snd_pcm_lib_malloc_pages(substream,
315 					params_buffer_bytes(hw_params));
316 	return result;
317 }
318 
319 
320 /* hw_free callback */
321 static int snd_p16v_pcm_hw_free_playback(struct snd_pcm_substream *substream)
322 {
323 	int result;
324 	result = snd_pcm_lib_free_pages(substream);
325 	return result;
326 }
327 
328 /* hw_free callback */
329 static int snd_p16v_pcm_hw_free_capture(struct snd_pcm_substream *substream)
330 {
331 	int result;
332 	result = snd_pcm_lib_free_pages(substream);
333 	return result;
334 }
335 
336 
337 /* prepare playback callback */
338 static int snd_p16v_pcm_prepare_playback(struct snd_pcm_substream *substream)
339 {
340 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
341 	struct snd_pcm_runtime *runtime = substream->runtime;
342 	int channel = substream->pcm->device - emu->p16v_device_offset;
343 	u32 *table_base = (u32 *)(emu->p16v_buffer.area+(8*16*channel));
344 	u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
345 	int i;
346 	u32 tmp;
347 
348 #if 0 /* debug */
349 	dev_dbg(emu->card->dev,
350 		"prepare:channel_number=%d, rate=%d, "
351 		   "format=0x%x, channels=%d, buffer_size=%ld, "
352 		   "period_size=%ld, periods=%u, frames_to_bytes=%d\n",
353 		   channel, runtime->rate, runtime->format, runtime->channels,
354 		   runtime->buffer_size, runtime->period_size,
355 		   runtime->periods, frames_to_bytes(runtime, 1));
356 	dev_dbg(emu->card->dev,
357 		"dma_addr=%x, dma_area=%p, table_base=%p\n",
358 		   runtime->dma_addr, runtime->dma_area, table_base);
359 	dev_dbg(emu->card->dev,
360 		"dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",
361 		   emu->p16v_buffer.addr, emu->p16v_buffer.area,
362 		   emu->p16v_buffer.bytes);
363 #endif /* debug */
364 	tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
365         switch (runtime->rate) {
366 	case 44100:
367 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x8080);
368 	  break;
369 	case 96000:
370 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x4040);
371 	  break;
372 	case 192000:
373 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x2020);
374 	  break;
375 	case 48000:
376 	default:
377 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x0000);
378 	  break;
379 	}
380 	/* FIXME: Check emu->buffer.size before actually writing to it. */
381 	for(i = 0; i < runtime->periods; i++) {
382 		table_base[i*2]=runtime->dma_addr+(i*period_size_bytes);
383 		table_base[(i*2)+1]=period_size_bytes<<16;
384 	}
385 
386 	snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_ADDR, channel, emu->p16v_buffer.addr+(8*16*channel));
387 	snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19);
388 	snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_PTR, channel, 0);
389 	snd_emu10k1_ptr20_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr);
390 	//snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes
391 	snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, 0); // buffer size in bytes
392 	snd_emu10k1_ptr20_write(emu, PLAYBACK_POINTER, channel, 0);
393 	snd_emu10k1_ptr20_write(emu, 0x07, channel, 0x0);
394 	snd_emu10k1_ptr20_write(emu, 0x08, channel, 0);
395 
396 	return 0;
397 }
398 
399 /* prepare capture callback */
400 static int snd_p16v_pcm_prepare_capture(struct snd_pcm_substream *substream)
401 {
402 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
403 	struct snd_pcm_runtime *runtime = substream->runtime;
404 	int channel = substream->pcm->device - emu->p16v_device_offset;
405 	u32 tmp;
406 
407 	/*
408 	dev_dbg(emu->card->dev, "prepare capture:channel_number=%d, rate=%d, "
409 	       "format=0x%x, channels=%d, buffer_size=%ld, period_size=%ld, "
410 	       "frames_to_bytes=%d\n",
411 	       channel, runtime->rate, runtime->format, runtime->channels,
412 	       runtime->buffer_size, runtime->period_size,
413 	       frames_to_bytes(runtime, 1));
414 	*/
415 	tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
416         switch (runtime->rate) {
417 	case 44100:
418 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0800);
419 	  break;
420 	case 96000:
421 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0400);
422 	  break;
423 	case 192000:
424 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0200);
425 	  break;
426 	case 48000:
427 	default:
428 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0000);
429 	  break;
430 	}
431 	/* FIXME: Check emu->buffer.size before actually writing to it. */
432 	snd_emu10k1_ptr20_write(emu, 0x13, channel, 0);
433 	snd_emu10k1_ptr20_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);
434 	snd_emu10k1_ptr20_write(emu, CAPTURE_BUFFER_SIZE, channel, frames_to_bytes(runtime, runtime->buffer_size) << 16); // buffer size in bytes
435 	snd_emu10k1_ptr20_write(emu, CAPTURE_POINTER, channel, 0);
436 	//snd_emu10k1_ptr20_write(emu, CAPTURE_SOURCE, 0x0, 0x333300e4); /* Select MIC or Line in */
437 	//snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) | (0x110000<<channel));
438 
439 	return 0;
440 }
441 
442 static void snd_p16v_intr_enable(struct snd_emu10k1 *emu, unsigned int intrenb)
443 {
444 	unsigned long flags;
445 	unsigned int enable;
446 
447 	spin_lock_irqsave(&emu->emu_lock, flags);
448 	enable = inl(emu->port + INTE2) | intrenb;
449 	outl(enable, emu->port + INTE2);
450 	spin_unlock_irqrestore(&emu->emu_lock, flags);
451 }
452 
453 static void snd_p16v_intr_disable(struct snd_emu10k1 *emu, unsigned int intrenb)
454 {
455 	unsigned long flags;
456 	unsigned int disable;
457 
458 	spin_lock_irqsave(&emu->emu_lock, flags);
459 	disable = inl(emu->port + INTE2) & (~intrenb);
460 	outl(disable, emu->port + INTE2);
461 	spin_unlock_irqrestore(&emu->emu_lock, flags);
462 }
463 
464 /* trigger_playback callback */
465 static int snd_p16v_pcm_trigger_playback(struct snd_pcm_substream *substream,
466 				    int cmd)
467 {
468 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
469 	struct snd_pcm_runtime *runtime;
470 	struct snd_emu10k1_pcm *epcm;
471 	int channel;
472 	int result = 0;
473         struct snd_pcm_substream *s;
474 	u32 basic = 0;
475 	u32 inte = 0;
476 	int running = 0;
477 
478 	switch (cmd) {
479 	case SNDRV_PCM_TRIGGER_START:
480 		running=1;
481 		break;
482 	case SNDRV_PCM_TRIGGER_STOP:
483 	default:
484 		running = 0;
485 		break;
486 	}
487         snd_pcm_group_for_each_entry(s, substream) {
488 		if (snd_pcm_substream_chip(s) != emu ||
489 		    s->stream != SNDRV_PCM_STREAM_PLAYBACK)
490 			continue;
491 		runtime = s->runtime;
492 		epcm = runtime->private_data;
493 		channel = substream->pcm->device-emu->p16v_device_offset;
494 		/* dev_dbg(emu->card->dev, "p16v channel=%d\n", channel); */
495 		epcm->running = running;
496 		basic |= (0x1<<channel);
497 		inte |= (INTE2_PLAYBACK_CH_0_LOOP<<channel);
498                 snd_pcm_trigger_done(s, substream);
499         }
500 	/* dev_dbg(emu->card->dev, "basic=0x%x, inte=0x%x\n", basic, inte); */
501 
502 	switch (cmd) {
503 	case SNDRV_PCM_TRIGGER_START:
504 		snd_p16v_intr_enable(emu, inte);
505 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)| (basic));
506 		break;
507 	case SNDRV_PCM_TRIGGER_STOP:
508 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(basic));
509 		snd_p16v_intr_disable(emu, inte);
510 		break;
511 	default:
512 		result = -EINVAL;
513 		break;
514 	}
515 	return result;
516 }
517 
518 /* trigger_capture callback */
519 static int snd_p16v_pcm_trigger_capture(struct snd_pcm_substream *substream,
520                                    int cmd)
521 {
522 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
523 	struct snd_pcm_runtime *runtime = substream->runtime;
524 	struct snd_emu10k1_pcm *epcm = runtime->private_data;
525 	int channel = 0;
526 	int result = 0;
527 	u32 inte = INTE2_CAPTURE_CH_0_LOOP | INTE2_CAPTURE_CH_0_HALF_LOOP;
528 
529 	switch (cmd) {
530 	case SNDRV_PCM_TRIGGER_START:
531 		snd_p16v_intr_enable(emu, inte);
532 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)|(0x100<<channel));
533 		epcm->running = 1;
534 		break;
535 	case SNDRV_PCM_TRIGGER_STOP:
536 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(0x100<<channel));
537 		snd_p16v_intr_disable(emu, inte);
538 		//snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) & ~(0x110000<<channel));
539 		epcm->running = 0;
540 		break;
541 	default:
542 		result = -EINVAL;
543 		break;
544 	}
545 	return result;
546 }
547 
548 /* pointer_playback callback */
549 static snd_pcm_uframes_t
550 snd_p16v_pcm_pointer_playback(struct snd_pcm_substream *substream)
551 {
552 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
553 	struct snd_pcm_runtime *runtime = substream->runtime;
554 	struct snd_emu10k1_pcm *epcm = runtime->private_data;
555 	snd_pcm_uframes_t ptr, ptr1, ptr2,ptr3,ptr4 = 0;
556 	int channel = substream->pcm->device - emu->p16v_device_offset;
557 	if (!epcm->running)
558 		return 0;
559 
560 	ptr3 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
561 	ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
562 	ptr4 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
563 	if (ptr3 != ptr4) ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
564 	ptr2 = bytes_to_frames(runtime, ptr1);
565 	ptr2+= (ptr4 >> 3) * runtime->period_size;
566 	ptr=ptr2;
567         if (ptr >= runtime->buffer_size)
568 		ptr -= runtime->buffer_size;
569 
570 	return ptr;
571 }
572 
573 /* pointer_capture callback */
574 static snd_pcm_uframes_t
575 snd_p16v_pcm_pointer_capture(struct snd_pcm_substream *substream)
576 {
577 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
578 	struct snd_pcm_runtime *runtime = substream->runtime;
579 	struct snd_emu10k1_pcm *epcm = runtime->private_data;
580 	snd_pcm_uframes_t ptr, ptr1, ptr2 = 0;
581 	int channel = 0;
582 
583 	if (!epcm->running)
584 		return 0;
585 
586 	ptr1 = snd_emu10k1_ptr20_read(emu, CAPTURE_POINTER, channel);
587 	ptr2 = bytes_to_frames(runtime, ptr1);
588 	ptr=ptr2;
589 	if (ptr >= runtime->buffer_size) {
590 		ptr -= runtime->buffer_size;
591 		dev_warn(emu->card->dev, "buffer capture limited!\n");
592 	}
593 	/*
594 	dev_dbg(emu->card->dev, "ptr1 = 0x%lx, ptr2=0x%lx, ptr=0x%lx, "
595 	       "buffer_size = 0x%x, period_size = 0x%x, bits=%d, rate=%d\n",
596 	       ptr1, ptr2, ptr, (int)runtime->buffer_size,
597 	       (int)runtime->period_size, (int)runtime->frame_bits,
598 	       (int)runtime->rate);
599 	*/
600 	return ptr;
601 }
602 
603 /* operators */
604 static struct snd_pcm_ops snd_p16v_playback_front_ops = {
605 	.open =        snd_p16v_pcm_open_playback_front,
606 	.close =       snd_p16v_pcm_close_playback,
607 	.ioctl =       snd_pcm_lib_ioctl,
608 	.hw_params =   snd_p16v_pcm_hw_params_playback,
609 	.hw_free =     snd_p16v_pcm_hw_free_playback,
610 	.prepare =     snd_p16v_pcm_prepare_playback,
611 	.trigger =     snd_p16v_pcm_trigger_playback,
612 	.pointer =     snd_p16v_pcm_pointer_playback,
613 };
614 
615 static struct snd_pcm_ops snd_p16v_capture_ops = {
616 	.open =        snd_p16v_pcm_open_capture,
617 	.close =       snd_p16v_pcm_close_capture,
618 	.ioctl =       snd_pcm_lib_ioctl,
619 	.hw_params =   snd_p16v_pcm_hw_params_capture,
620 	.hw_free =     snd_p16v_pcm_hw_free_capture,
621 	.prepare =     snd_p16v_pcm_prepare_capture,
622 	.trigger =     snd_p16v_pcm_trigger_capture,
623 	.pointer =     snd_p16v_pcm_pointer_capture,
624 };
625 
626 
627 int snd_p16v_free(struct snd_emu10k1 *chip)
628 {
629 	// release the data
630 	if (chip->p16v_buffer.area) {
631 		snd_dma_free_pages(&chip->p16v_buffer);
632 		/*
633 		dev_dbg(chip->card->dev, "period lables free: %p\n",
634 			   &chip->p16v_buffer);
635 		*/
636 	}
637 	return 0;
638 }
639 
640 int snd_p16v_pcm(struct snd_emu10k1 *emu, int device)
641 {
642 	struct snd_pcm *pcm;
643 	struct snd_pcm_substream *substream;
644 	int err;
645         int capture=1;
646 
647 	/* dev_dbg(emu->card->dev, "snd_p16v_pcm called. device=%d\n", device); */
648 	emu->p16v_device_offset = device;
649 
650 	if ((err = snd_pcm_new(emu->card, "p16v", device, 1, capture, &pcm)) < 0)
651 		return err;
652 
653 	pcm->private_data = emu;
654 	// Single playback 8 channel device.
655 	// Single capture 2 channel device.
656 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_p16v_playback_front_ops);
657 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_p16v_capture_ops);
658 
659 	pcm->info_flags = 0;
660 	pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
661 	strcpy(pcm->name, "p16v");
662 	emu->pcm_p16v = pcm;
663 
664 	for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
665 	    substream;
666 	    substream = substream->next) {
667 		if ((err = snd_pcm_lib_preallocate_pages(substream,
668 							 SNDRV_DMA_TYPE_DEV,
669 							 snd_dma_pci_data(emu->pci),
670 							 ((65536 - 64) * 8), ((65536 - 64) * 8))) < 0)
671 			return err;
672 		/*
673 		dev_dbg(emu->card->dev,
674 			   "preallocate playback substream: err=%d\n", err);
675 		*/
676 	}
677 
678 	for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
679 	      substream;
680 	      substream = substream->next) {
681  		if ((err = snd_pcm_lib_preallocate_pages(substream,
682 	                                           SNDRV_DMA_TYPE_DEV,
683 	                                           snd_dma_pci_data(emu->pci),
684 	                                           65536 - 64, 65536 - 64)) < 0)
685 			return err;
686 		/*
687 		dev_dbg(emu->card->dev,
688 			   "preallocate capture substream: err=%d\n", err);
689 		*/
690 	}
691 
692 	return 0;
693 }
694 
695 static int snd_p16v_volume_info(struct snd_kcontrol *kcontrol,
696 				struct snd_ctl_elem_info *uinfo)
697 {
698         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
699         uinfo->count = 2;
700         uinfo->value.integer.min = 0;
701         uinfo->value.integer.max = 255;
702         return 0;
703 }
704 
705 static int snd_p16v_volume_get(struct snd_kcontrol *kcontrol,
706 			       struct snd_ctl_elem_value *ucontrol)
707 {
708         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
709 	int high_low = (kcontrol->private_value >> 8) & 0xff;
710 	int reg = kcontrol->private_value & 0xff;
711 	u32 value;
712 
713 	value = snd_emu10k1_ptr20_read(emu, reg, high_low);
714 	if (high_low) {
715 		ucontrol->value.integer.value[0] = 0xff - ((value >> 24) & 0xff); /* Left */
716 		ucontrol->value.integer.value[1] = 0xff - ((value >> 16) & 0xff); /* Right */
717 	} else {
718 		ucontrol->value.integer.value[0] = 0xff - ((value >> 8) & 0xff); /* Left */
719 		ucontrol->value.integer.value[1] = 0xff - ((value >> 0) & 0xff); /* Right */
720 	}
721 	return 0;
722 }
723 
724 static int snd_p16v_volume_put(struct snd_kcontrol *kcontrol,
725 			       struct snd_ctl_elem_value *ucontrol)
726 {
727         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
728 	int high_low = (kcontrol->private_value >> 8) & 0xff;
729 	int reg = kcontrol->private_value & 0xff;
730         u32 value, oval;
731 
732 	oval = value = snd_emu10k1_ptr20_read(emu, reg, 0);
733 	if (high_low == 1) {
734 		value &= 0xffff;
735 		value |= ((0xff - ucontrol->value.integer.value[0]) << 24) |
736 			((0xff - ucontrol->value.integer.value[1]) << 16);
737 	} else {
738 		value &= 0xffff0000;
739 		value |= ((0xff - ucontrol->value.integer.value[0]) << 8) |
740 			((0xff - ucontrol->value.integer.value[1]) );
741 	}
742 	if (value != oval) {
743 		snd_emu10k1_ptr20_write(emu, reg, 0, value);
744 		return 1;
745 	}
746 	return 0;
747 }
748 
749 static int snd_p16v_capture_source_info(struct snd_kcontrol *kcontrol,
750 					struct snd_ctl_elem_info *uinfo)
751 {
752 	static const char * const texts[8] = {
753 		"SPDIF", "I2S", "SRC48", "SRCMulti_SPDIF", "SRCMulti_I2S",
754 		"CDIF", "FX", "AC97"
755 	};
756 
757 	return snd_ctl_enum_info(uinfo, 1, 8, texts);
758 }
759 
760 static int snd_p16v_capture_source_get(struct snd_kcontrol *kcontrol,
761 					struct snd_ctl_elem_value *ucontrol)
762 {
763 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
764 
765 	ucontrol->value.enumerated.item[0] = emu->p16v_capture_source;
766 	return 0;
767 }
768 
769 static int snd_p16v_capture_source_put(struct snd_kcontrol *kcontrol,
770 					struct snd_ctl_elem_value *ucontrol)
771 {
772 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
773 	unsigned int val;
774 	int change = 0;
775 	u32 mask;
776 	u32 source;
777 
778 	val = ucontrol->value.enumerated.item[0] ;
779 	if (val > 7)
780 		return -EINVAL;
781 	change = (emu->p16v_capture_source != val);
782 	if (change) {
783 		emu->p16v_capture_source = val;
784 		source = (val << 28) | (val << 24) | (val << 20) | (val << 16);
785 		mask = snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & 0xffff;
786 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, source | mask);
787 	}
788         return change;
789 }
790 
791 static int snd_p16v_capture_channel_info(struct snd_kcontrol *kcontrol,
792 					 struct snd_ctl_elem_info *uinfo)
793 {
794 	static const char * const texts[4] = { "0", "1", "2", "3", };
795 
796 	return snd_ctl_enum_info(uinfo, 1, 4, texts);
797 }
798 
799 static int snd_p16v_capture_channel_get(struct snd_kcontrol *kcontrol,
800 					struct snd_ctl_elem_value *ucontrol)
801 {
802 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
803 
804 	ucontrol->value.enumerated.item[0] = emu->p16v_capture_channel;
805 	return 0;
806 }
807 
808 static int snd_p16v_capture_channel_put(struct snd_kcontrol *kcontrol,
809 					struct snd_ctl_elem_value *ucontrol)
810 {
811 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
812 	unsigned int val;
813 	int change = 0;
814 	u32 tmp;
815 
816 	val = ucontrol->value.enumerated.item[0] ;
817 	if (val > 3)
818 		return -EINVAL;
819 	change = (emu->p16v_capture_channel != val);
820 	if (change) {
821 		emu->p16v_capture_channel = val;
822 		tmp = snd_emu10k1_ptr20_read(emu, CAPTURE_P16V_SOURCE, 0) & 0xfffc;
823 		snd_emu10k1_ptr20_write(emu, CAPTURE_P16V_SOURCE, 0, tmp | val);
824 	}
825         return change;
826 }
827 static const DECLARE_TLV_DB_SCALE(snd_p16v_db_scale1, -5175, 25, 1);
828 
829 #define P16V_VOL(xname,xreg,xhl) { \
830 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
831         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |             \
832                   SNDRV_CTL_ELEM_ACCESS_TLV_READ,               \
833 	.info = snd_p16v_volume_info, \
834 	.get = snd_p16v_volume_get, \
835 	.put = snd_p16v_volume_put, \
836 	.tlv = { .p = snd_p16v_db_scale1 },	\
837 	.private_value = ((xreg) | ((xhl) << 8)) \
838 }
839 
840 static struct snd_kcontrol_new p16v_mixer_controls[] = {
841 	P16V_VOL("HD Analog Front Playback Volume", PLAYBACK_VOLUME_MIXER9, 0),
842 	P16V_VOL("HD Analog Rear Playback Volume", PLAYBACK_VOLUME_MIXER10, 1),
843 	P16V_VOL("HD Analog Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER9, 1),
844 	P16V_VOL("HD Analog Side Playback Volume", PLAYBACK_VOLUME_MIXER10, 0),
845 	P16V_VOL("HD SPDIF Front Playback Volume", PLAYBACK_VOLUME_MIXER7, 0),
846 	P16V_VOL("HD SPDIF Rear Playback Volume", PLAYBACK_VOLUME_MIXER8, 1),
847 	P16V_VOL("HD SPDIF Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER7, 1),
848 	P16V_VOL("HD SPDIF Side Playback Volume", PLAYBACK_VOLUME_MIXER8, 0),
849 	{
850 		.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
851 		.name =		"HD source Capture",
852 		.info =		snd_p16v_capture_source_info,
853 		.get =		snd_p16v_capture_source_get,
854 		.put =		snd_p16v_capture_source_put
855 	},
856 	{
857 		.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
858 		.name =		"HD channel Capture",
859 		.info =		snd_p16v_capture_channel_info,
860 		.get =		snd_p16v_capture_channel_get,
861 		.put =		snd_p16v_capture_channel_put
862 	},
863 };
864 
865 
866 int snd_p16v_mixer(struct snd_emu10k1 *emu)
867 {
868 	int i, err;
869         struct snd_card *card = emu->card;
870 
871 	for (i = 0; i < ARRAY_SIZE(p16v_mixer_controls); i++) {
872 		if ((err = snd_ctl_add(card, snd_ctl_new1(&p16v_mixer_controls[i],
873 							  emu))) < 0)
874 			return err;
875 	}
876         return 0;
877 }
878 
879 #ifdef CONFIG_PM_SLEEP
880 
881 #define NUM_CHS	1	/* up to 4, but only first channel is used */
882 
883 int snd_p16v_alloc_pm_buffer(struct snd_emu10k1 *emu)
884 {
885 	emu->p16v_saved = vmalloc(NUM_CHS * 4 * 0x80);
886 	if (! emu->p16v_saved)
887 		return -ENOMEM;
888 	return 0;
889 }
890 
891 void snd_p16v_free_pm_buffer(struct snd_emu10k1 *emu)
892 {
893 	vfree(emu->p16v_saved);
894 }
895 
896 void snd_p16v_suspend(struct snd_emu10k1 *emu)
897 {
898 	int i, ch;
899 	unsigned int *val;
900 
901 	val = emu->p16v_saved;
902 	for (ch = 0; ch < NUM_CHS; ch++)
903 		for (i = 0; i < 0x80; i++, val++)
904 			*val = snd_emu10k1_ptr20_read(emu, i, ch);
905 }
906 
907 void snd_p16v_resume(struct snd_emu10k1 *emu)
908 {
909 	int i, ch;
910 	unsigned int *val;
911 
912 	val = emu->p16v_saved;
913 	for (ch = 0; ch < NUM_CHS; ch++)
914 		for (i = 0; i < 0x80; i++, val++)
915 			snd_emu10k1_ptr20_write(emu, i, ch, *val);
916 }
917 #endif
918