xref: /openbmc/linux/sound/pci/emu10k1/p16v.c (revision b593bce5)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  Copyright (c) by James Courtier-Dutton <James@superbug.demon.co.uk>
4  *  Driver p16v chips
5  *  Version: 0.25
6  *
7  *  FEATURES currently supported:
8  *    Output fixed at S32_LE, 2 channel to hw:0,0
9  *    Rates: 44.1, 48, 96, 192.
10  *
11  *  Changelog:
12  *  0.8
13  *    Use separate card based buffer for periods table.
14  *  0.9
15  *    Use 2 channel output streams instead of 8 channel.
16  *       (8 channel output streams might be good for ASIO type output)
17  *    Corrected speaker output, so Front -> Front etc.
18  *  0.10
19  *    Fixed missed interrupts.
20  *  0.11
21  *    Add Sound card model number and names.
22  *    Add Analog volume controls.
23  *  0.12
24  *    Corrected playback interrupts. Now interrupt per period, instead of half period.
25  *  0.13
26  *    Use single trigger for multichannel.
27  *  0.14
28  *    Mic capture now works at fixed: S32_LE, 96000Hz, Stereo.
29  *  0.15
30  *    Force buffer_size / period_size == INTEGER.
31  *  0.16
32  *    Update p16v.c to work with changed alsa api.
33  *  0.17
34  *    Update p16v.c to work with changed alsa api. Removed boot_devs.
35  *  0.18
36  *    Merging with snd-emu10k1 driver.
37  *  0.19
38  *    One stereo channel at 24bit now works.
39  *  0.20
40  *    Added better register defines.
41  *  0.21
42  *    Integrated with snd-emu10k1 driver.
43  *  0.22
44  *    Removed #if 0 ... #endif
45  *  0.23
46  *    Implement different capture rates.
47  *  0.24
48  *    Implement different capture source channels.
49  *    e.g. When HD Capture source is set to SPDIF,
50  *    setting HD Capture channel to 0 captures from CDROM digital input.
51  *    setting HD Capture channel to 1 captures from SPDIF in.
52  *  0.25
53  *    Include capture buffer sizes.
54  *
55  *  BUGS:
56  *    Some stability problems when unloading the snd-p16v kernel module.
57  *    --
58  *
59  *  TODO:
60  *    SPDIF out.
61  *    Find out how to change capture sample rates. E.g. To record SPDIF at 48000Hz.
62  *    Currently capture fixed at 48000Hz.
63  *
64  *    --
65  *  GENERAL INFO:
66  *    Model: SB0240
67  *    P16V Chip: CA0151-DBS
68  *    Audigy 2 Chip: CA0102-IAT
69  *    AC97 Codec: STAC 9721
70  *    ADC: Philips 1361T (Stereo 24bit)
71  *    DAC: CS4382-K (8-channel, 24bit, 192Khz)
72  *
73  *  This code was initially based on code from ALSA's emu10k1x.c which is:
74  *  Copyright (c) by Francisco Moraes <fmoraes@nc.rr.com>
75  */
76 #include <linux/delay.h>
77 #include <linux/init.h>
78 #include <linux/interrupt.h>
79 #include <linux/pci.h>
80 #include <linux/slab.h>
81 #include <linux/vmalloc.h>
82 #include <linux/moduleparam.h>
83 #include <sound/core.h>
84 #include <sound/initval.h>
85 #include <sound/pcm.h>
86 #include <sound/ac97_codec.h>
87 #include <sound/info.h>
88 #include <sound/tlv.h>
89 #include <sound/emu10k1.h>
90 #include "p16v.h"
91 
92 #define SET_CHANNEL 0  /* Testing channel outputs 0=Front, 1=Center/LFE, 2=Unknown, 3=Rear */
93 #define PCM_FRONT_CHANNEL 0
94 #define PCM_REAR_CHANNEL 1
95 #define PCM_CENTER_LFE_CHANNEL 2
96 #define PCM_SIDE_CHANNEL 3
97 #define CONTROL_FRONT_CHANNEL 0
98 #define CONTROL_REAR_CHANNEL 3
99 #define CONTROL_CENTER_LFE_CHANNEL 1
100 #define CONTROL_SIDE_CHANNEL 2
101 
102 /* Card IDs:
103  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:2002 -> Audigy2 ZS 7.1 Model:SB0350
104  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:1007 -> Audigy2 6.1    Model:SB0240
105  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:1002 -> Audigy2 Platinum  Model:SB msb0240230009266
106  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:2007 -> Audigy4 Pro Model:SB0380 M1SB0380472001901E
107  *
108  */
109 
110  /* hardware definition */
111 static const struct snd_pcm_hardware snd_p16v_playback_hw = {
112 	.info =			SNDRV_PCM_INFO_MMAP |
113 				SNDRV_PCM_INFO_INTERLEAVED |
114 				SNDRV_PCM_INFO_BLOCK_TRANSFER |
115 				SNDRV_PCM_INFO_RESUME |
116 				SNDRV_PCM_INFO_MMAP_VALID |
117 				SNDRV_PCM_INFO_SYNC_START,
118 	.formats =		SNDRV_PCM_FMTBIT_S32_LE, /* Only supports 24-bit samples padded to 32 bits. */
119 	.rates =		SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100,
120 	.rate_min =		44100,
121 	.rate_max =		192000,
122 	.channels_min =		8,
123 	.channels_max =		8,
124 	.buffer_bytes_max =	((65536 - 64) * 8),
125 	.period_bytes_min =	64,
126 	.period_bytes_max =	(65536 - 64),
127 	.periods_min =		2,
128 	.periods_max =		8,
129 	.fifo_size =		0,
130 };
131 
132 static const struct snd_pcm_hardware snd_p16v_capture_hw = {
133 	.info =			(SNDRV_PCM_INFO_MMAP |
134 				 SNDRV_PCM_INFO_INTERLEAVED |
135 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
136 				 SNDRV_PCM_INFO_RESUME |
137 				 SNDRV_PCM_INFO_MMAP_VALID),
138 	.formats =		SNDRV_PCM_FMTBIT_S32_LE,
139 	.rates =		SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100,
140 	.rate_min =		44100,
141 	.rate_max =		192000,
142 	.channels_min =		2,
143 	.channels_max =		2,
144 	.buffer_bytes_max =	(65536 - 64),
145 	.period_bytes_min =	64,
146 	.period_bytes_max =	(65536 - 128) >> 1,  /* size has to be N*64 bytes */
147 	.periods_min =		2,
148 	.periods_max =		2,
149 	.fifo_size =		0,
150 };
151 
152 static void snd_p16v_pcm_free_substream(struct snd_pcm_runtime *runtime)
153 {
154 	struct snd_emu10k1_pcm *epcm = runtime->private_data;
155 
156 	kfree(epcm);
157 }
158 
159 /* open_playback callback */
160 static int snd_p16v_pcm_open_playback_channel(struct snd_pcm_substream *substream, int channel_id)
161 {
162 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
163         struct snd_emu10k1_voice *channel = &(emu->p16v_voices[channel_id]);
164 	struct snd_emu10k1_pcm *epcm;
165 	struct snd_pcm_runtime *runtime = substream->runtime;
166 	int err;
167 
168 	epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
169 	/* dev_dbg(emu->card->dev, "epcm kcalloc: %p\n", epcm); */
170 
171 	if (epcm == NULL)
172 		return -ENOMEM;
173 	epcm->emu = emu;
174 	epcm->substream = substream;
175 	/*
176 	dev_dbg(emu->card->dev, "epcm device=%d, channel_id=%d\n",
177 		   substream->pcm->device, channel_id);
178 	*/
179 	runtime->private_data = epcm;
180 	runtime->private_free = snd_p16v_pcm_free_substream;
181 
182 	runtime->hw = snd_p16v_playback_hw;
183 
184         channel->emu = emu;
185         channel->number = channel_id;
186 
187         channel->use=1;
188 #if 0 /* debug */
189 	dev_dbg(emu->card->dev,
190 		   "p16v: open channel_id=%d, channel=%p, use=0x%x\n",
191 		   channel_id, channel, channel->use);
192 	dev_dbg(emu->card->dev, "open:channel_id=%d, chip=%p, channel=%p\n",
193 	       channel_id, chip, channel);
194 #endif /* debug */
195 	/* channel->interrupt = snd_p16v_pcm_channel_interrupt; */
196 	channel->epcm = epcm;
197 	if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
198                 return err;
199 
200 	runtime->sync.id32[0] = substream->pcm->card->number;
201 	runtime->sync.id32[1] = 'P';
202 	runtime->sync.id32[2] = 16;
203 	runtime->sync.id32[3] = 'V';
204 
205 	return 0;
206 }
207 /* open_capture callback */
208 static int snd_p16v_pcm_open_capture_channel(struct snd_pcm_substream *substream, int channel_id)
209 {
210 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
211 	struct snd_emu10k1_voice *channel = &(emu->p16v_capture_voice);
212 	struct snd_emu10k1_pcm *epcm;
213 	struct snd_pcm_runtime *runtime = substream->runtime;
214 	int err;
215 
216 	epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
217 	/* dev_dbg(emu->card->dev, "epcm kcalloc: %p\n", epcm); */
218 
219 	if (epcm == NULL)
220 		return -ENOMEM;
221 	epcm->emu = emu;
222 	epcm->substream = substream;
223 	/*
224 	dev_dbg(emu->card->dev, "epcm device=%d, channel_id=%d\n",
225 		   substream->pcm->device, channel_id);
226 	*/
227 	runtime->private_data = epcm;
228 	runtime->private_free = snd_p16v_pcm_free_substream;
229 
230 	runtime->hw = snd_p16v_capture_hw;
231 
232 	channel->emu = emu;
233 	channel->number = channel_id;
234 
235 	channel->use=1;
236 #if 0 /* debug */
237 	dev_dbg(emu->card->dev,
238 		   "p16v: open channel_id=%d, channel=%p, use=0x%x\n",
239 		   channel_id, channel, channel->use);
240 	dev_dbg(emu->card->dev, "open:channel_id=%d, chip=%p, channel=%p\n",
241 	       channel_id, chip, channel);
242 #endif /* debug */
243 	/* channel->interrupt = snd_p16v_pcm_channel_interrupt; */
244 	channel->epcm = epcm;
245 	if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
246 		return err;
247 
248 	return 0;
249 }
250 
251 
252 /* close callback */
253 static int snd_p16v_pcm_close_playback(struct snd_pcm_substream *substream)
254 {
255 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
256 	//struct snd_pcm_runtime *runtime = substream->runtime;
257 	//struct snd_emu10k1_pcm *epcm = runtime->private_data;
258 	emu->p16v_voices[substream->pcm->device - emu->p16v_device_offset].use = 0;
259 	/* FIXME: maybe zero others */
260 	return 0;
261 }
262 
263 /* close callback */
264 static int snd_p16v_pcm_close_capture(struct snd_pcm_substream *substream)
265 {
266 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
267 	//struct snd_pcm_runtime *runtime = substream->runtime;
268 	//struct snd_emu10k1_pcm *epcm = runtime->private_data;
269 	emu->p16v_capture_voice.use = 0;
270 	/* FIXME: maybe zero others */
271 	return 0;
272 }
273 
274 static int snd_p16v_pcm_open_playback_front(struct snd_pcm_substream *substream)
275 {
276 	return snd_p16v_pcm_open_playback_channel(substream, PCM_FRONT_CHANNEL);
277 }
278 
279 static int snd_p16v_pcm_open_capture(struct snd_pcm_substream *substream)
280 {
281 	// Only using channel 0 for now, but the card has 2 channels.
282 	return snd_p16v_pcm_open_capture_channel(substream, 0);
283 }
284 
285 /* hw_params callback */
286 static int snd_p16v_pcm_hw_params_playback(struct snd_pcm_substream *substream,
287 				      struct snd_pcm_hw_params *hw_params)
288 {
289 	return snd_pcm_lib_malloc_pages(substream,
290 					params_buffer_bytes(hw_params));
291 }
292 
293 /* hw_params callback */
294 static int snd_p16v_pcm_hw_params_capture(struct snd_pcm_substream *substream,
295 				      struct snd_pcm_hw_params *hw_params)
296 {
297 	return snd_pcm_lib_malloc_pages(substream,
298 					params_buffer_bytes(hw_params));
299 }
300 
301 
302 /* hw_free callback */
303 static int snd_p16v_pcm_hw_free_playback(struct snd_pcm_substream *substream)
304 {
305 	return snd_pcm_lib_free_pages(substream);
306 }
307 
308 /* hw_free callback */
309 static int snd_p16v_pcm_hw_free_capture(struct snd_pcm_substream *substream)
310 {
311 	return snd_pcm_lib_free_pages(substream);
312 }
313 
314 
315 /* prepare playback callback */
316 static int snd_p16v_pcm_prepare_playback(struct snd_pcm_substream *substream)
317 {
318 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
319 	struct snd_pcm_runtime *runtime = substream->runtime;
320 	int channel = substream->pcm->device - emu->p16v_device_offset;
321 	u32 *table_base = (u32 *)(emu->p16v_buffer.area+(8*16*channel));
322 	u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
323 	int i;
324 	u32 tmp;
325 
326 #if 0 /* debug */
327 	dev_dbg(emu->card->dev,
328 		"prepare:channel_number=%d, rate=%d, "
329 		   "format=0x%x, channels=%d, buffer_size=%ld, "
330 		   "period_size=%ld, periods=%u, frames_to_bytes=%d\n",
331 		   channel, runtime->rate, runtime->format, runtime->channels,
332 		   runtime->buffer_size, runtime->period_size,
333 		   runtime->periods, frames_to_bytes(runtime, 1));
334 	dev_dbg(emu->card->dev,
335 		"dma_addr=%x, dma_area=%p, table_base=%p\n",
336 		   runtime->dma_addr, runtime->dma_area, table_base);
337 	dev_dbg(emu->card->dev,
338 		"dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",
339 		   emu->p16v_buffer.addr, emu->p16v_buffer.area,
340 		   emu->p16v_buffer.bytes);
341 #endif /* debug */
342 	tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
343         switch (runtime->rate) {
344 	case 44100:
345 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x8080);
346 	  break;
347 	case 96000:
348 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x4040);
349 	  break;
350 	case 192000:
351 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x2020);
352 	  break;
353 	case 48000:
354 	default:
355 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x0000);
356 	  break;
357 	}
358 	/* FIXME: Check emu->buffer.size before actually writing to it. */
359 	for(i = 0; i < runtime->periods; i++) {
360 		table_base[i*2]=runtime->dma_addr+(i*period_size_bytes);
361 		table_base[(i*2)+1]=period_size_bytes<<16;
362 	}
363 
364 	snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_ADDR, channel, emu->p16v_buffer.addr+(8*16*channel));
365 	snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19);
366 	snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_PTR, channel, 0);
367 	snd_emu10k1_ptr20_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr);
368 	//snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes
369 	snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, 0); // buffer size in bytes
370 	snd_emu10k1_ptr20_write(emu, PLAYBACK_POINTER, channel, 0);
371 	snd_emu10k1_ptr20_write(emu, 0x07, channel, 0x0);
372 	snd_emu10k1_ptr20_write(emu, 0x08, channel, 0);
373 
374 	return 0;
375 }
376 
377 /* prepare capture callback */
378 static int snd_p16v_pcm_prepare_capture(struct snd_pcm_substream *substream)
379 {
380 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
381 	struct snd_pcm_runtime *runtime = substream->runtime;
382 	int channel = substream->pcm->device - emu->p16v_device_offset;
383 	u32 tmp;
384 
385 	/*
386 	dev_dbg(emu->card->dev, "prepare capture:channel_number=%d, rate=%d, "
387 	       "format=0x%x, channels=%d, buffer_size=%ld, period_size=%ld, "
388 	       "frames_to_bytes=%d\n",
389 	       channel, runtime->rate, runtime->format, runtime->channels,
390 	       runtime->buffer_size, runtime->period_size,
391 	       frames_to_bytes(runtime, 1));
392 	*/
393 	tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
394         switch (runtime->rate) {
395 	case 44100:
396 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0800);
397 	  break;
398 	case 96000:
399 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0400);
400 	  break;
401 	case 192000:
402 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0200);
403 	  break;
404 	case 48000:
405 	default:
406 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0000);
407 	  break;
408 	}
409 	/* FIXME: Check emu->buffer.size before actually writing to it. */
410 	snd_emu10k1_ptr20_write(emu, 0x13, channel, 0);
411 	snd_emu10k1_ptr20_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);
412 	snd_emu10k1_ptr20_write(emu, CAPTURE_BUFFER_SIZE, channel, frames_to_bytes(runtime, runtime->buffer_size) << 16); // buffer size in bytes
413 	snd_emu10k1_ptr20_write(emu, CAPTURE_POINTER, channel, 0);
414 	//snd_emu10k1_ptr20_write(emu, CAPTURE_SOURCE, 0x0, 0x333300e4); /* Select MIC or Line in */
415 	//snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) | (0x110000<<channel));
416 
417 	return 0;
418 }
419 
420 static void snd_p16v_intr_enable(struct snd_emu10k1 *emu, unsigned int intrenb)
421 {
422 	unsigned long flags;
423 	unsigned int enable;
424 
425 	spin_lock_irqsave(&emu->emu_lock, flags);
426 	enable = inl(emu->port + INTE2) | intrenb;
427 	outl(enable, emu->port + INTE2);
428 	spin_unlock_irqrestore(&emu->emu_lock, flags);
429 }
430 
431 static void snd_p16v_intr_disable(struct snd_emu10k1 *emu, unsigned int intrenb)
432 {
433 	unsigned long flags;
434 	unsigned int disable;
435 
436 	spin_lock_irqsave(&emu->emu_lock, flags);
437 	disable = inl(emu->port + INTE2) & (~intrenb);
438 	outl(disable, emu->port + INTE2);
439 	spin_unlock_irqrestore(&emu->emu_lock, flags);
440 }
441 
442 /* trigger_playback callback */
443 static int snd_p16v_pcm_trigger_playback(struct snd_pcm_substream *substream,
444 				    int cmd)
445 {
446 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
447 	struct snd_pcm_runtime *runtime;
448 	struct snd_emu10k1_pcm *epcm;
449 	int channel;
450 	int result = 0;
451         struct snd_pcm_substream *s;
452 	u32 basic = 0;
453 	u32 inte = 0;
454 	int running = 0;
455 
456 	switch (cmd) {
457 	case SNDRV_PCM_TRIGGER_START:
458 		running=1;
459 		break;
460 	case SNDRV_PCM_TRIGGER_STOP:
461 	default:
462 		running = 0;
463 		break;
464 	}
465         snd_pcm_group_for_each_entry(s, substream) {
466 		if (snd_pcm_substream_chip(s) != emu ||
467 		    s->stream != SNDRV_PCM_STREAM_PLAYBACK)
468 			continue;
469 		runtime = s->runtime;
470 		epcm = runtime->private_data;
471 		channel = substream->pcm->device-emu->p16v_device_offset;
472 		/* dev_dbg(emu->card->dev, "p16v channel=%d\n", channel); */
473 		epcm->running = running;
474 		basic |= (0x1<<channel);
475 		inte |= (INTE2_PLAYBACK_CH_0_LOOP<<channel);
476                 snd_pcm_trigger_done(s, substream);
477         }
478 	/* dev_dbg(emu->card->dev, "basic=0x%x, inte=0x%x\n", basic, inte); */
479 
480 	switch (cmd) {
481 	case SNDRV_PCM_TRIGGER_START:
482 		snd_p16v_intr_enable(emu, inte);
483 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)| (basic));
484 		break;
485 	case SNDRV_PCM_TRIGGER_STOP:
486 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(basic));
487 		snd_p16v_intr_disable(emu, inte);
488 		break;
489 	default:
490 		result = -EINVAL;
491 		break;
492 	}
493 	return result;
494 }
495 
496 /* trigger_capture callback */
497 static int snd_p16v_pcm_trigger_capture(struct snd_pcm_substream *substream,
498                                    int cmd)
499 {
500 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
501 	struct snd_pcm_runtime *runtime = substream->runtime;
502 	struct snd_emu10k1_pcm *epcm = runtime->private_data;
503 	int channel = 0;
504 	int result = 0;
505 	u32 inte = INTE2_CAPTURE_CH_0_LOOP | INTE2_CAPTURE_CH_0_HALF_LOOP;
506 
507 	switch (cmd) {
508 	case SNDRV_PCM_TRIGGER_START:
509 		snd_p16v_intr_enable(emu, inte);
510 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)|(0x100<<channel));
511 		epcm->running = 1;
512 		break;
513 	case SNDRV_PCM_TRIGGER_STOP:
514 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(0x100<<channel));
515 		snd_p16v_intr_disable(emu, inte);
516 		//snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) & ~(0x110000<<channel));
517 		epcm->running = 0;
518 		break;
519 	default:
520 		result = -EINVAL;
521 		break;
522 	}
523 	return result;
524 }
525 
526 /* pointer_playback callback */
527 static snd_pcm_uframes_t
528 snd_p16v_pcm_pointer_playback(struct snd_pcm_substream *substream)
529 {
530 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
531 	struct snd_pcm_runtime *runtime = substream->runtime;
532 	struct snd_emu10k1_pcm *epcm = runtime->private_data;
533 	snd_pcm_uframes_t ptr, ptr1, ptr2,ptr3,ptr4 = 0;
534 	int channel = substream->pcm->device - emu->p16v_device_offset;
535 	if (!epcm->running)
536 		return 0;
537 
538 	ptr3 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
539 	ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
540 	ptr4 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
541 	if (ptr3 != ptr4) ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
542 	ptr2 = bytes_to_frames(runtime, ptr1);
543 	ptr2+= (ptr4 >> 3) * runtime->period_size;
544 	ptr=ptr2;
545         if (ptr >= runtime->buffer_size)
546 		ptr -= runtime->buffer_size;
547 
548 	return ptr;
549 }
550 
551 /* pointer_capture callback */
552 static snd_pcm_uframes_t
553 snd_p16v_pcm_pointer_capture(struct snd_pcm_substream *substream)
554 {
555 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
556 	struct snd_pcm_runtime *runtime = substream->runtime;
557 	struct snd_emu10k1_pcm *epcm = runtime->private_data;
558 	snd_pcm_uframes_t ptr, ptr1, ptr2 = 0;
559 	int channel = 0;
560 
561 	if (!epcm->running)
562 		return 0;
563 
564 	ptr1 = snd_emu10k1_ptr20_read(emu, CAPTURE_POINTER, channel);
565 	ptr2 = bytes_to_frames(runtime, ptr1);
566 	ptr=ptr2;
567 	if (ptr >= runtime->buffer_size) {
568 		ptr -= runtime->buffer_size;
569 		dev_warn(emu->card->dev, "buffer capture limited!\n");
570 	}
571 	/*
572 	dev_dbg(emu->card->dev, "ptr1 = 0x%lx, ptr2=0x%lx, ptr=0x%lx, "
573 	       "buffer_size = 0x%x, period_size = 0x%x, bits=%d, rate=%d\n",
574 	       ptr1, ptr2, ptr, (int)runtime->buffer_size,
575 	       (int)runtime->period_size, (int)runtime->frame_bits,
576 	       (int)runtime->rate);
577 	*/
578 	return ptr;
579 }
580 
581 /* operators */
582 static const struct snd_pcm_ops snd_p16v_playback_front_ops = {
583 	.open =        snd_p16v_pcm_open_playback_front,
584 	.close =       snd_p16v_pcm_close_playback,
585 	.ioctl =       snd_pcm_lib_ioctl,
586 	.hw_params =   snd_p16v_pcm_hw_params_playback,
587 	.hw_free =     snd_p16v_pcm_hw_free_playback,
588 	.prepare =     snd_p16v_pcm_prepare_playback,
589 	.trigger =     snd_p16v_pcm_trigger_playback,
590 	.pointer =     snd_p16v_pcm_pointer_playback,
591 };
592 
593 static const struct snd_pcm_ops snd_p16v_capture_ops = {
594 	.open =        snd_p16v_pcm_open_capture,
595 	.close =       snd_p16v_pcm_close_capture,
596 	.ioctl =       snd_pcm_lib_ioctl,
597 	.hw_params =   snd_p16v_pcm_hw_params_capture,
598 	.hw_free =     snd_p16v_pcm_hw_free_capture,
599 	.prepare =     snd_p16v_pcm_prepare_capture,
600 	.trigger =     snd_p16v_pcm_trigger_capture,
601 	.pointer =     snd_p16v_pcm_pointer_capture,
602 };
603 
604 
605 int snd_p16v_free(struct snd_emu10k1 *chip)
606 {
607 	// release the data
608 	if (chip->p16v_buffer.area) {
609 		snd_dma_free_pages(&chip->p16v_buffer);
610 		/*
611 		dev_dbg(chip->card->dev, "period lables free: %p\n",
612 			   &chip->p16v_buffer);
613 		*/
614 	}
615 	return 0;
616 }
617 
618 int snd_p16v_pcm(struct snd_emu10k1 *emu, int device)
619 {
620 	struct snd_pcm *pcm;
621 	struct snd_pcm_substream *substream;
622 	int err;
623         int capture=1;
624 
625 	/* dev_dbg(emu->card->dev, "snd_p16v_pcm called. device=%d\n", device); */
626 	emu->p16v_device_offset = device;
627 
628 	if ((err = snd_pcm_new(emu->card, "p16v", device, 1, capture, &pcm)) < 0)
629 		return err;
630 
631 	pcm->private_data = emu;
632 	// Single playback 8 channel device.
633 	// Single capture 2 channel device.
634 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_p16v_playback_front_ops);
635 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_p16v_capture_ops);
636 
637 	pcm->info_flags = 0;
638 	pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
639 	strcpy(pcm->name, "p16v");
640 	emu->pcm_p16v = pcm;
641 
642 	for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
643 	    substream;
644 	    substream = substream->next) {
645 		snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV,
646 					      snd_dma_pci_data(emu->pci),
647 					      (65536 - 64) * 8,
648 					      (65536 - 64) * 8);
649 		/*
650 		dev_dbg(emu->card->dev,
651 			   "preallocate playback substream: err=%d\n", err);
652 		*/
653 	}
654 
655 	for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
656 	      substream;
657 	      substream = substream->next) {
658 		snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV,
659 					      snd_dma_pci_data(emu->pci),
660 					      65536 - 64, 65536 - 64);
661 		/*
662 		dev_dbg(emu->card->dev,
663 			   "preallocate capture substream: err=%d\n", err);
664 		*/
665 	}
666 
667 	return 0;
668 }
669 
670 static int snd_p16v_volume_info(struct snd_kcontrol *kcontrol,
671 				struct snd_ctl_elem_info *uinfo)
672 {
673         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
674         uinfo->count = 2;
675         uinfo->value.integer.min = 0;
676         uinfo->value.integer.max = 255;
677         return 0;
678 }
679 
680 static int snd_p16v_volume_get(struct snd_kcontrol *kcontrol,
681 			       struct snd_ctl_elem_value *ucontrol)
682 {
683         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
684 	int high_low = (kcontrol->private_value >> 8) & 0xff;
685 	int reg = kcontrol->private_value & 0xff;
686 	u32 value;
687 
688 	value = snd_emu10k1_ptr20_read(emu, reg, high_low);
689 	if (high_low) {
690 		ucontrol->value.integer.value[0] = 0xff - ((value >> 24) & 0xff); /* Left */
691 		ucontrol->value.integer.value[1] = 0xff - ((value >> 16) & 0xff); /* Right */
692 	} else {
693 		ucontrol->value.integer.value[0] = 0xff - ((value >> 8) & 0xff); /* Left */
694 		ucontrol->value.integer.value[1] = 0xff - ((value >> 0) & 0xff); /* Right */
695 	}
696 	return 0;
697 }
698 
699 static int snd_p16v_volume_put(struct snd_kcontrol *kcontrol,
700 			       struct snd_ctl_elem_value *ucontrol)
701 {
702         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
703 	int high_low = (kcontrol->private_value >> 8) & 0xff;
704 	int reg = kcontrol->private_value & 0xff;
705         u32 value, oval;
706 
707 	oval = value = snd_emu10k1_ptr20_read(emu, reg, 0);
708 	if (high_low == 1) {
709 		value &= 0xffff;
710 		value |= ((0xff - ucontrol->value.integer.value[0]) << 24) |
711 			((0xff - ucontrol->value.integer.value[1]) << 16);
712 	} else {
713 		value &= 0xffff0000;
714 		value |= ((0xff - ucontrol->value.integer.value[0]) << 8) |
715 			((0xff - ucontrol->value.integer.value[1]) );
716 	}
717 	if (value != oval) {
718 		snd_emu10k1_ptr20_write(emu, reg, 0, value);
719 		return 1;
720 	}
721 	return 0;
722 }
723 
724 static int snd_p16v_capture_source_info(struct snd_kcontrol *kcontrol,
725 					struct snd_ctl_elem_info *uinfo)
726 {
727 	static const char * const texts[8] = {
728 		"SPDIF", "I2S", "SRC48", "SRCMulti_SPDIF", "SRCMulti_I2S",
729 		"CDIF", "FX", "AC97"
730 	};
731 
732 	return snd_ctl_enum_info(uinfo, 1, 8, texts);
733 }
734 
735 static int snd_p16v_capture_source_get(struct snd_kcontrol *kcontrol,
736 					struct snd_ctl_elem_value *ucontrol)
737 {
738 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
739 
740 	ucontrol->value.enumerated.item[0] = emu->p16v_capture_source;
741 	return 0;
742 }
743 
744 static int snd_p16v_capture_source_put(struct snd_kcontrol *kcontrol,
745 					struct snd_ctl_elem_value *ucontrol)
746 {
747 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
748 	unsigned int val;
749 	int change = 0;
750 	u32 mask;
751 	u32 source;
752 
753 	val = ucontrol->value.enumerated.item[0] ;
754 	if (val > 7)
755 		return -EINVAL;
756 	change = (emu->p16v_capture_source != val);
757 	if (change) {
758 		emu->p16v_capture_source = val;
759 		source = (val << 28) | (val << 24) | (val << 20) | (val << 16);
760 		mask = snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & 0xffff;
761 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, source | mask);
762 	}
763         return change;
764 }
765 
766 static int snd_p16v_capture_channel_info(struct snd_kcontrol *kcontrol,
767 					 struct snd_ctl_elem_info *uinfo)
768 {
769 	static const char * const texts[4] = { "0", "1", "2", "3", };
770 
771 	return snd_ctl_enum_info(uinfo, 1, 4, texts);
772 }
773 
774 static int snd_p16v_capture_channel_get(struct snd_kcontrol *kcontrol,
775 					struct snd_ctl_elem_value *ucontrol)
776 {
777 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
778 
779 	ucontrol->value.enumerated.item[0] = emu->p16v_capture_channel;
780 	return 0;
781 }
782 
783 static int snd_p16v_capture_channel_put(struct snd_kcontrol *kcontrol,
784 					struct snd_ctl_elem_value *ucontrol)
785 {
786 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
787 	unsigned int val;
788 	int change = 0;
789 	u32 tmp;
790 
791 	val = ucontrol->value.enumerated.item[0] ;
792 	if (val > 3)
793 		return -EINVAL;
794 	change = (emu->p16v_capture_channel != val);
795 	if (change) {
796 		emu->p16v_capture_channel = val;
797 		tmp = snd_emu10k1_ptr20_read(emu, CAPTURE_P16V_SOURCE, 0) & 0xfffc;
798 		snd_emu10k1_ptr20_write(emu, CAPTURE_P16V_SOURCE, 0, tmp | val);
799 	}
800         return change;
801 }
802 static const DECLARE_TLV_DB_SCALE(snd_p16v_db_scale1, -5175, 25, 1);
803 
804 #define P16V_VOL(xname,xreg,xhl) { \
805 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
806         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |             \
807                   SNDRV_CTL_ELEM_ACCESS_TLV_READ,               \
808 	.info = snd_p16v_volume_info, \
809 	.get = snd_p16v_volume_get, \
810 	.put = snd_p16v_volume_put, \
811 	.tlv = { .p = snd_p16v_db_scale1 },	\
812 	.private_value = ((xreg) | ((xhl) << 8)) \
813 }
814 
815 static struct snd_kcontrol_new p16v_mixer_controls[] = {
816 	P16V_VOL("HD Analog Front Playback Volume", PLAYBACK_VOLUME_MIXER9, 0),
817 	P16V_VOL("HD Analog Rear Playback Volume", PLAYBACK_VOLUME_MIXER10, 1),
818 	P16V_VOL("HD Analog Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER9, 1),
819 	P16V_VOL("HD Analog Side Playback Volume", PLAYBACK_VOLUME_MIXER10, 0),
820 	P16V_VOL("HD SPDIF Front Playback Volume", PLAYBACK_VOLUME_MIXER7, 0),
821 	P16V_VOL("HD SPDIF Rear Playback Volume", PLAYBACK_VOLUME_MIXER8, 1),
822 	P16V_VOL("HD SPDIF Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER7, 1),
823 	P16V_VOL("HD SPDIF Side Playback Volume", PLAYBACK_VOLUME_MIXER8, 0),
824 	{
825 		.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
826 		.name =		"HD source Capture",
827 		.info =		snd_p16v_capture_source_info,
828 		.get =		snd_p16v_capture_source_get,
829 		.put =		snd_p16v_capture_source_put
830 	},
831 	{
832 		.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
833 		.name =		"HD channel Capture",
834 		.info =		snd_p16v_capture_channel_info,
835 		.get =		snd_p16v_capture_channel_get,
836 		.put =		snd_p16v_capture_channel_put
837 	},
838 };
839 
840 
841 int snd_p16v_mixer(struct snd_emu10k1 *emu)
842 {
843 	int i, err;
844         struct snd_card *card = emu->card;
845 
846 	for (i = 0; i < ARRAY_SIZE(p16v_mixer_controls); i++) {
847 		if ((err = snd_ctl_add(card, snd_ctl_new1(&p16v_mixer_controls[i],
848 							  emu))) < 0)
849 			return err;
850 	}
851         return 0;
852 }
853 
854 #ifdef CONFIG_PM_SLEEP
855 
856 #define NUM_CHS	1	/* up to 4, but only first channel is used */
857 
858 int snd_p16v_alloc_pm_buffer(struct snd_emu10k1 *emu)
859 {
860 	emu->p16v_saved = vmalloc(array_size(NUM_CHS * 4, 0x80));
861 	if (! emu->p16v_saved)
862 		return -ENOMEM;
863 	return 0;
864 }
865 
866 void snd_p16v_free_pm_buffer(struct snd_emu10k1 *emu)
867 {
868 	vfree(emu->p16v_saved);
869 }
870 
871 void snd_p16v_suspend(struct snd_emu10k1 *emu)
872 {
873 	int i, ch;
874 	unsigned int *val;
875 
876 	val = emu->p16v_saved;
877 	for (ch = 0; ch < NUM_CHS; ch++)
878 		for (i = 0; i < 0x80; i++, val++)
879 			*val = snd_emu10k1_ptr20_read(emu, i, ch);
880 }
881 
882 void snd_p16v_resume(struct snd_emu10k1 *emu)
883 {
884 	int i, ch;
885 	unsigned int *val;
886 
887 	val = emu->p16v_saved;
888 	for (ch = 0; ch < NUM_CHS; ch++)
889 		for (i = 0; i < 0x80; i++, val++)
890 			snd_emu10k1_ptr20_write(emu, i, ch, *val);
891 }
892 #endif
893