xref: /linux/sound/pci/emu10k1/p16v.c (revision bf36793fa260cb68cc817f311f1f683788261796)
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 /* open_playback callback */
153 static int snd_p16v_pcm_open_playback_channel(struct snd_pcm_substream *substream, int channel_id)
154 {
155 	struct snd_pcm_runtime *runtime = substream->runtime;
156 	int err;
157 
158 	/*
159 	dev_dbg(emu->card->dev, "epcm device=%d, channel_id=%d\n",
160 		   substream->pcm->device, channel_id);
161 	*/
162 
163 	runtime->hw = snd_p16v_playback_hw;
164 
165 #if 0 /* debug */
166 	dev_dbg(emu->card->dev,
167 		   "p16v: open channel_id=%d, channel=%p, use=0x%x\n",
168 		   channel_id, channel, channel->use);
169 	dev_dbg(emu->card->dev, "open:channel_id=%d, chip=%p, channel=%p\n",
170 	       channel_id, chip, channel);
171 #endif /* debug */
172 	/* channel->interrupt = snd_p16v_pcm_channel_interrupt; */
173 	err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
174 	if (err < 0)
175                 return err;
176 
177 	return 0;
178 }
179 
180 /* open_capture callback */
181 static int snd_p16v_pcm_open_capture_channel(struct snd_pcm_substream *substream, int channel_id)
182 {
183 	struct snd_pcm_runtime *runtime = substream->runtime;
184 	int err;
185 
186 	/*
187 	dev_dbg(emu->card->dev, "epcm device=%d, channel_id=%d\n",
188 		   substream->pcm->device, channel_id);
189 	*/
190 
191 	runtime->hw = snd_p16v_capture_hw;
192 
193 	err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
194 	if (err < 0)
195 		return err;
196 
197 	return 0;
198 }
199 
200 
201 /* close callback */
202 static int snd_p16v_pcm_close_playback(struct snd_pcm_substream *substream)
203 {
204 	return 0;
205 }
206 
207 /* close callback */
208 static int snd_p16v_pcm_close_capture(struct snd_pcm_substream *substream)
209 {
210 	return 0;
211 }
212 
213 static int snd_p16v_pcm_open_playback_front(struct snd_pcm_substream *substream)
214 {
215 	return snd_p16v_pcm_open_playback_channel(substream, PCM_FRONT_CHANNEL);
216 }
217 
218 static int snd_p16v_pcm_open_capture(struct snd_pcm_substream *substream)
219 {
220 	// Only using channel 0 for now, but the card has 2 channels.
221 	return snd_p16v_pcm_open_capture_channel(substream, 0);
222 }
223 
224 static int snd_p16v_pcm_ioctl_playback(struct snd_pcm_substream *substream,
225 				       unsigned int cmd, void *arg)
226 {
227 	if (cmd == SNDRV_PCM_IOCTL1_SYNC_ID) {
228 		static const unsigned char id[4] = { 'P', '1', '6', 'V' };
229 		snd_pcm_set_sync_per_card(substream, arg, id, 4);
230 		return 0;
231 	}
232 	return snd_pcm_lib_ioctl(substream, cmd, arg);
233 }
234 
235 /* prepare playback callback */
236 static int snd_p16v_pcm_prepare_playback(struct snd_pcm_substream *substream)
237 {
238 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
239 	struct snd_pcm_runtime *runtime = substream->runtime;
240 	int channel = substream->pcm->device - emu->p16v_device_offset;
241 	u32 *table_base = (u32 *)(emu->p16v_buffer->area+(8*16*channel));
242 	u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
243 	int i;
244 	u32 tmp;
245 
246 #if 0 /* debug */
247 	dev_dbg(emu->card->dev,
248 		"prepare:channel_number=%d, rate=%d, "
249 		   "format=0x%x, channels=%d, buffer_size=%ld, "
250 		   "period_size=%ld, periods=%u, frames_to_bytes=%d\n",
251 		   channel, runtime->rate, runtime->format, runtime->channels,
252 		   runtime->buffer_size, runtime->period_size,
253 		   runtime->periods, frames_to_bytes(runtime, 1));
254 	dev_dbg(emu->card->dev,
255 		"dma_addr=%x, dma_area=%p, table_base=%p\n",
256 		   runtime->dma_addr, runtime->dma_area, table_base);
257 	dev_dbg(emu->card->dev,
258 		"dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",
259 		   emu->p16v_buffer->addr, emu->p16v_buffer->area,
260 		   emu->p16v_buffer->bytes);
261 #endif /* debug */
262 	tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
263 	tmp &= ~(A_SPDIF_RATE_MASK | A_EHC_SRC48_MASK);
264         switch (runtime->rate) {
265 	case 44100:
266 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel,
267 				tmp | A_SPDIF_44100 | A_EHC_SRC48_44);
268 	  break;
269 	case 96000:
270 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel,
271 				tmp | A_SPDIF_96000 | A_EHC_SRC48_96);
272 	  break;
273 	case 192000:
274 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel,
275 				tmp | A_SPDIF_192000 | A_EHC_SRC48_192);
276 	  break;
277 	case 48000:
278 	default:
279 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel,
280 				tmp | A_SPDIF_48000 | A_EHC_SRC48_BYPASS);
281 	  break;
282 	}
283 	/* FIXME: Check emu->buffer.size before actually writing to it. */
284 	for(i = 0; i < runtime->periods; i++) {
285 		table_base[i*2]=runtime->dma_addr+(i*period_size_bytes);
286 		table_base[(i*2)+1]=period_size_bytes<<16;
287 	}
288 
289 	snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_ADDR, channel, emu->p16v_buffer->addr+(8*16*channel));
290 	snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19);
291 	snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_PTR, channel, 0);
292 	snd_emu10k1_ptr20_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr);
293 	//snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes
294 	snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, 0); // buffer size in bytes
295 	snd_emu10k1_ptr20_write(emu, PLAYBACK_POINTER, channel, 0);
296 	snd_emu10k1_ptr20_write(emu, PLAYBACK_FIFO_END_ADDRESS, channel, 0);
297 	snd_emu10k1_ptr20_write(emu, PLAYBACK_FIFO_POINTER, channel, 0);
298 
299 	return 0;
300 }
301 
302 /* prepare capture callback */
303 static int snd_p16v_pcm_prepare_capture(struct snd_pcm_substream *substream)
304 {
305 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
306 	struct snd_pcm_runtime *runtime = substream->runtime;
307 	int channel = substream->pcm->device - emu->p16v_device_offset;
308 
309 	/*
310 	dev_dbg(emu->card->dev, "prepare capture:channel_number=%d, rate=%d, "
311 	       "format=0x%x, channels=%d, buffer_size=%ld, period_size=%ld, "
312 	       "frames_to_bytes=%d\n",
313 	       channel, runtime->rate, runtime->format, runtime->channels,
314 	       runtime->buffer_size, runtime->period_size,
315 	       frames_to_bytes(runtime, 1));
316 	*/
317         switch (runtime->rate) {
318 	case 44100:
319 	  snd_emu10k1_ptr_write(emu, A_I2S_CAPTURE_RATE, channel, A_I2S_CAPTURE_44100);
320 	  break;
321 	case 96000:
322 	  snd_emu10k1_ptr_write(emu, A_I2S_CAPTURE_RATE, channel, A_I2S_CAPTURE_96000);
323 	  break;
324 	case 192000:
325 	  snd_emu10k1_ptr_write(emu, A_I2S_CAPTURE_RATE, channel, A_I2S_CAPTURE_192000);
326 	  break;
327 	case 48000:
328 	default:
329 	  snd_emu10k1_ptr_write(emu, A_I2S_CAPTURE_RATE, channel, A_I2S_CAPTURE_48000);
330 	  break;
331 	}
332 	/* FIXME: Check emu->buffer.size before actually writing to it. */
333 	snd_emu10k1_ptr20_write(emu, CAPTURE_FIFO_POINTER, channel, 0);
334 	snd_emu10k1_ptr20_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);
335 	snd_emu10k1_ptr20_write(emu, CAPTURE_BUFFER_SIZE, channel, frames_to_bytes(runtime, runtime->buffer_size) << 16); // buffer size in bytes
336 	snd_emu10k1_ptr20_write(emu, CAPTURE_POINTER, channel, 0);
337 	//snd_emu10k1_ptr20_write(emu, CAPTURE_SOURCE, 0x0, 0x333300e4); /* Select MIC or Line in */
338 	//snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) | (0x110000<<channel));
339 
340 	return 0;
341 }
342 
343 static void snd_p16v_intr_enable(struct snd_emu10k1 *emu, unsigned int intrenb)
344 {
345 	unsigned long flags;
346 	unsigned int enable;
347 
348 	spin_lock_irqsave(&emu->emu_lock, flags);
349 	enable = inl(emu->port + INTE2) | intrenb;
350 	outl(enable, emu->port + INTE2);
351 	spin_unlock_irqrestore(&emu->emu_lock, flags);
352 }
353 
354 static void snd_p16v_intr_disable(struct snd_emu10k1 *emu, unsigned int intrenb)
355 {
356 	unsigned long flags;
357 	unsigned int disable;
358 
359 	spin_lock_irqsave(&emu->emu_lock, flags);
360 	disable = inl(emu->port + INTE2) & (~intrenb);
361 	outl(disable, emu->port + INTE2);
362 	spin_unlock_irqrestore(&emu->emu_lock, flags);
363 }
364 
365 static void snd_p16v_interrupt(struct snd_emu10k1 *emu)
366 {
367 	unsigned int status;
368 
369 	while ((status = inl(emu->port + IPR2)) != 0) {
370 		u32 mask = INTE2_PLAYBACK_CH_0_LOOP;  /* Full Loop */
371 
372 		/* dev_dbg(emu->card->dev, "p16v status=0x%x\n", status); */
373 		if (status & mask) {
374 			struct snd_pcm_substream *substream =
375 					emu->pcm_p16v->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
376 			struct snd_pcm_runtime *runtime = substream->runtime;
377 
378 			if (runtime && runtime->private_data) {
379 				snd_pcm_period_elapsed(substream);
380 			} else {
381 				dev_err(emu->card->dev,
382 					"p16v: status: 0x%08x, mask=0x%08x\n",
383 					status, mask);
384 			}
385 		}
386 		if (status & 0x110000) {
387 			struct snd_pcm_substream *substream =
388 					emu->pcm_p16v->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
389 			struct snd_pcm_runtime *runtime = substream->runtime;
390 
391 			/* dev_info(emu->card->dev, "capture int found\n"); */
392 			if (runtime && runtime->private_data) {
393 				/* dev_info(emu->card->dev, "capture period_elapsed\n"); */
394 				snd_pcm_period_elapsed(substream);
395 			}
396 		}
397 		outl(status, emu->port + IPR2); /* ack all */
398 	}
399 }
400 
401 /* trigger_playback callback */
402 static int snd_p16v_pcm_trigger_playback(struct snd_pcm_substream *substream,
403 				    int cmd)
404 {
405 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
406 	struct snd_pcm_runtime *runtime;
407 	int channel;
408 	int result = 0;
409         struct snd_pcm_substream *s;
410 	u32 basic = 0;
411 	u32 inte = 0;
412 	int running = 0;
413 
414 	switch (cmd) {
415 	case SNDRV_PCM_TRIGGER_START:
416 		running=1;
417 		break;
418 	case SNDRV_PCM_TRIGGER_STOP:
419 	default:
420 		running = 0;
421 		break;
422 	}
423         snd_pcm_group_for_each_entry(s, substream) {
424 		if (snd_pcm_substream_chip(s) != emu ||
425 		    s->stream != SNDRV_PCM_STREAM_PLAYBACK)
426 			continue;
427 		runtime = s->runtime;
428 		channel = substream->pcm->device-emu->p16v_device_offset;
429 		/* dev_dbg(emu->card->dev, "p16v channel=%d\n", channel); */
430 		runtime->private_data = (void *)(ptrdiff_t)running;
431 		basic |= (0x1<<channel);
432 		inte |= (INTE2_PLAYBACK_CH_0_LOOP<<channel);
433                 snd_pcm_trigger_done(s, substream);
434         }
435 	/* dev_dbg(emu->card->dev, "basic=0x%x, inte=0x%x\n", basic, inte); */
436 
437 	switch (cmd) {
438 	case SNDRV_PCM_TRIGGER_START:
439 		snd_p16v_intr_enable(emu, inte);
440 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)| (basic));
441 		break;
442 	case SNDRV_PCM_TRIGGER_STOP:
443 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(basic));
444 		snd_p16v_intr_disable(emu, inte);
445 		break;
446 	default:
447 		result = -EINVAL;
448 		break;
449 	}
450 	return result;
451 }
452 
453 /* trigger_capture callback */
454 static int snd_p16v_pcm_trigger_capture(struct snd_pcm_substream *substream,
455                                    int cmd)
456 {
457 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
458 	struct snd_pcm_runtime *runtime = substream->runtime;
459 	int channel = 0;
460 	int result = 0;
461 	u32 inte = INTE2_CAPTURE_CH_0_LOOP | INTE2_CAPTURE_CH_0_HALF_LOOP;
462 
463 	switch (cmd) {
464 	case SNDRV_PCM_TRIGGER_START:
465 		snd_p16v_intr_enable(emu, inte);
466 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)|(0x100<<channel));
467 		runtime->private_data = (void *)1;
468 		break;
469 	case SNDRV_PCM_TRIGGER_STOP:
470 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(0x100<<channel));
471 		snd_p16v_intr_disable(emu, inte);
472 		//snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) & ~(0x110000<<channel));
473 		runtime->private_data = NULL;
474 		break;
475 	default:
476 		result = -EINVAL;
477 		break;
478 	}
479 	return result;
480 }
481 
482 /* pointer_playback callback */
483 static snd_pcm_uframes_t
484 snd_p16v_pcm_pointer_playback(struct snd_pcm_substream *substream)
485 {
486 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
487 	struct snd_pcm_runtime *runtime = substream->runtime;
488 	snd_pcm_uframes_t ptr, ptr1, ptr2,ptr3,ptr4 = 0;
489 	int channel = substream->pcm->device - emu->p16v_device_offset;
490 
491 	if (!runtime->private_data)
492 		return 0;
493 
494 	ptr3 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
495 	ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
496 	ptr4 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
497 	if (ptr3 != ptr4) ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
498 	ptr2 = bytes_to_frames(runtime, ptr1);
499 	ptr2+= (ptr4 >> 3) * runtime->period_size;
500 	ptr=ptr2;
501         if (ptr >= runtime->buffer_size)
502 		ptr -= runtime->buffer_size;
503 
504 	return ptr;
505 }
506 
507 /* pointer_capture callback */
508 static snd_pcm_uframes_t
509 snd_p16v_pcm_pointer_capture(struct snd_pcm_substream *substream)
510 {
511 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
512 	struct snd_pcm_runtime *runtime = substream->runtime;
513 	snd_pcm_uframes_t ptr, ptr1, ptr2 = 0;
514 	int channel = 0;
515 
516 	if (!runtime->private_data)
517 		return 0;
518 
519 	ptr1 = snd_emu10k1_ptr20_read(emu, CAPTURE_POINTER, channel);
520 	ptr2 = bytes_to_frames(runtime, ptr1);
521 	ptr=ptr2;
522 	if (ptr >= runtime->buffer_size) {
523 		ptr -= runtime->buffer_size;
524 		dev_warn(emu->card->dev, "buffer capture limited!\n");
525 	}
526 	/*
527 	dev_dbg(emu->card->dev, "ptr1 = 0x%lx, ptr2=0x%lx, ptr=0x%lx, "
528 	       "buffer_size = 0x%x, period_size = 0x%x, bits=%d, rate=%d\n",
529 	       ptr1, ptr2, ptr, (int)runtime->buffer_size,
530 	       (int)runtime->period_size, (int)runtime->frame_bits,
531 	       (int)runtime->rate);
532 	*/
533 	return ptr;
534 }
535 
536 /* operators */
537 static const struct snd_pcm_ops snd_p16v_playback_front_ops = {
538 	.open =        snd_p16v_pcm_open_playback_front,
539 	.close =       snd_p16v_pcm_close_playback,
540 	.ioctl =       snd_p16v_pcm_ioctl_playback,
541 	.prepare =     snd_p16v_pcm_prepare_playback,
542 	.trigger =     snd_p16v_pcm_trigger_playback,
543 	.pointer =     snd_p16v_pcm_pointer_playback,
544 };
545 
546 static const struct snd_pcm_ops snd_p16v_capture_ops = {
547 	.open =        snd_p16v_pcm_open_capture,
548 	.close =       snd_p16v_pcm_close_capture,
549 	.prepare =     snd_p16v_pcm_prepare_capture,
550 	.trigger =     snd_p16v_pcm_trigger_capture,
551 	.pointer =     snd_p16v_pcm_pointer_capture,
552 };
553 
554 int snd_p16v_pcm(struct snd_emu10k1 *emu, int device)
555 {
556 	struct snd_pcm *pcm;
557 	struct snd_pcm_substream *substream;
558 	int err;
559         int capture=1;
560 
561 	/* dev_dbg(emu->card->dev, "snd_p16v_pcm called. device=%d\n", device); */
562 	emu->p16v_device_offset = device;
563 
564 	err = snd_pcm_new(emu->card, "p16v", device, 1, capture, &pcm);
565 	if (err < 0)
566 		return err;
567 
568 	pcm->private_data = emu;
569 	// Single playback 8 channel device.
570 	// Single capture 2 channel device.
571 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_p16v_playback_front_ops);
572 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_p16v_capture_ops);
573 
574 	pcm->info_flags = 0;
575 	pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
576 	strcpy(pcm->name, "p16v");
577 	emu->pcm_p16v = pcm;
578 	emu->p16v_interrupt = snd_p16v_interrupt;
579 
580 	for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
581 	    substream;
582 	    substream = substream->next) {
583 		snd_pcm_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV,
584 					   &emu->pci->dev,
585 					   (65536 - 64) * 8,
586 					   (65536 - 64) * 8);
587 		/*
588 		dev_dbg(emu->card->dev,
589 			   "preallocate playback substream: err=%d\n", err);
590 		*/
591 	}
592 
593 	for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
594 	      substream;
595 	      substream = substream->next) {
596 		snd_pcm_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV,
597 					   &emu->pci->dev,
598 					   65536 - 64, 65536 - 64);
599 		/*
600 		dev_dbg(emu->card->dev,
601 			   "preallocate capture substream: err=%d\n", err);
602 		*/
603 	}
604 
605 	return 0;
606 }
607 
608 static int snd_p16v_volume_info(struct snd_kcontrol *kcontrol,
609 				struct snd_ctl_elem_info *uinfo)
610 {
611         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
612         uinfo->count = 2;
613         uinfo->value.integer.min = 0;
614         uinfo->value.integer.max = 255;
615         return 0;
616 }
617 
618 static int snd_p16v_volume_get(struct snd_kcontrol *kcontrol,
619 			       struct snd_ctl_elem_value *ucontrol)
620 {
621         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
622 	int high_low = (kcontrol->private_value >> 8) & 0xff;
623 	int reg = kcontrol->private_value & 0xff;
624 	u32 value;
625 
626 	value = snd_emu10k1_ptr20_read(emu, reg, high_low);
627 	if (high_low) {
628 		ucontrol->value.integer.value[0] = 0xff - ((value >> 24) & 0xff); /* Left */
629 		ucontrol->value.integer.value[1] = 0xff - ((value >> 16) & 0xff); /* Right */
630 	} else {
631 		ucontrol->value.integer.value[0] = 0xff - ((value >> 8) & 0xff); /* Left */
632 		ucontrol->value.integer.value[1] = 0xff - ((value >> 0) & 0xff); /* Right */
633 	}
634 	return 0;
635 }
636 
637 static int snd_p16v_volume_put(struct snd_kcontrol *kcontrol,
638 			       struct snd_ctl_elem_value *ucontrol)
639 {
640         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
641 	int high_low = (kcontrol->private_value >> 8) & 0xff;
642 	int reg = kcontrol->private_value & 0xff;
643         u32 value, oval;
644 
645 	oval = value = snd_emu10k1_ptr20_read(emu, reg, 0);
646 	if (high_low == 1) {
647 		value &= 0xffff;
648 		value |= ((0xff - ucontrol->value.integer.value[0]) << 24) |
649 			((0xff - ucontrol->value.integer.value[1]) << 16);
650 	} else {
651 		value &= 0xffff0000;
652 		value |= ((0xff - ucontrol->value.integer.value[0]) << 8) |
653 			((0xff - ucontrol->value.integer.value[1]) );
654 	}
655 	if (value != oval) {
656 		snd_emu10k1_ptr20_write(emu, reg, 0, value);
657 		return 1;
658 	}
659 	return 0;
660 }
661 
662 static int snd_p16v_capture_source_info(struct snd_kcontrol *kcontrol,
663 					struct snd_ctl_elem_info *uinfo)
664 {
665 	static const char * const texts[8] = {
666 		"SPDIF", "I2S", "SRC48", "SRCMulti_SPDIF", "SRCMulti_I2S",
667 		"CDIF", "FX", "AC97"
668 	};
669 
670 	return snd_ctl_enum_info(uinfo, 1, 8, texts);
671 }
672 
673 static int snd_p16v_capture_source_get(struct snd_kcontrol *kcontrol,
674 					struct snd_ctl_elem_value *ucontrol)
675 {
676 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
677 
678 	ucontrol->value.enumerated.item[0] = emu->p16v_capture_source;
679 	return 0;
680 }
681 
682 static int snd_p16v_capture_source_put(struct snd_kcontrol *kcontrol,
683 					struct snd_ctl_elem_value *ucontrol)
684 {
685 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
686 	unsigned int val;
687 	int change = 0;
688 	u32 mask;
689 	u32 source;
690 
691 	val = ucontrol->value.enumerated.item[0] ;
692 	if (val > 7)
693 		return -EINVAL;
694 	change = (emu->p16v_capture_source != val);
695 	if (change) {
696 		emu->p16v_capture_source = val;
697 		source = (val << 28) | (val << 24) | (val << 20) | (val << 16);
698 		mask = snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & 0xffff;
699 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, source | mask);
700 	}
701         return change;
702 }
703 
704 static int snd_p16v_capture_channel_info(struct snd_kcontrol *kcontrol,
705 					 struct snd_ctl_elem_info *uinfo)
706 {
707 	static const char * const texts[4] = { "0", "1", "2", "3", };
708 
709 	return snd_ctl_enum_info(uinfo, 1, 4, texts);
710 }
711 
712 static int snd_p16v_capture_channel_get(struct snd_kcontrol *kcontrol,
713 					struct snd_ctl_elem_value *ucontrol)
714 {
715 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
716 
717 	ucontrol->value.enumerated.item[0] = emu->p16v_capture_channel;
718 	return 0;
719 }
720 
721 static int snd_p16v_capture_channel_put(struct snd_kcontrol *kcontrol,
722 					struct snd_ctl_elem_value *ucontrol)
723 {
724 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
725 	unsigned int val;
726 	int change = 0;
727 	u32 tmp;
728 
729 	val = ucontrol->value.enumerated.item[0] ;
730 	if (val > 3)
731 		return -EINVAL;
732 	change = (emu->p16v_capture_channel != val);
733 	if (change) {
734 		emu->p16v_capture_channel = val;
735 		tmp = snd_emu10k1_ptr20_read(emu, CAPTURE_P16V_SOURCE, 0) & 0xfffc;
736 		snd_emu10k1_ptr20_write(emu, CAPTURE_P16V_SOURCE, 0, tmp | val);
737 	}
738         return change;
739 }
740 static const DECLARE_TLV_DB_SCALE(snd_p16v_db_scale1, -5175, 25, 1);
741 
742 #define P16V_VOL(xname,xreg,xhl) { \
743 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
744         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |             \
745                   SNDRV_CTL_ELEM_ACCESS_TLV_READ,               \
746 	.info = snd_p16v_volume_info, \
747 	.get = snd_p16v_volume_get, \
748 	.put = snd_p16v_volume_put, \
749 	.tlv = { .p = snd_p16v_db_scale1 },	\
750 	.private_value = ((xreg) | ((xhl) << 8)) \
751 }
752 
753 static const struct snd_kcontrol_new p16v_mixer_controls[] = {
754 	P16V_VOL("HD Analog Front Playback Volume", PLAYBACK_VOLUME_MIXER9, 0),
755 	P16V_VOL("HD Analog Rear Playback Volume", PLAYBACK_VOLUME_MIXER10, 1),
756 	P16V_VOL("HD Analog Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER9, 1),
757 	P16V_VOL("HD Analog Side Playback Volume", PLAYBACK_VOLUME_MIXER10, 0),
758 	P16V_VOL("HD SPDIF Front Playback Volume", PLAYBACK_VOLUME_MIXER7, 0),
759 	P16V_VOL("HD SPDIF Rear Playback Volume", PLAYBACK_VOLUME_MIXER8, 1),
760 	P16V_VOL("HD SPDIF Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER7, 1),
761 	P16V_VOL("HD SPDIF Side Playback Volume", PLAYBACK_VOLUME_MIXER8, 0),
762 	{
763 		.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
764 		.name =		"HD source Capture",
765 		.info =		snd_p16v_capture_source_info,
766 		.get =		snd_p16v_capture_source_get,
767 		.put =		snd_p16v_capture_source_put
768 	},
769 	{
770 		.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
771 		.name =		"HD channel Capture",
772 		.info =		snd_p16v_capture_channel_info,
773 		.get =		snd_p16v_capture_channel_get,
774 		.put =		snd_p16v_capture_channel_put
775 	},
776 };
777 
778 
779 int snd_p16v_mixer(struct snd_emu10k1 *emu)
780 {
781 	int i, err;
782         struct snd_card *card = emu->card;
783 
784 	for (i = 0; i < ARRAY_SIZE(p16v_mixer_controls); i++) {
785 		err = snd_ctl_add(card, snd_ctl_new1(&p16v_mixer_controls[i], emu));
786 		if (err < 0)
787 			return err;
788 	}
789         return 0;
790 }
791 
792 #ifdef CONFIG_PM_SLEEP
793 
794 #define NUM_CHS	1	/* up to 4, but only first channel is used */
795 
796 int snd_p16v_alloc_pm_buffer(struct snd_emu10k1 *emu)
797 {
798 	emu->p16v_saved = vmalloc(array_size(NUM_CHS * 4, 0x80));
799 	if (! emu->p16v_saved)
800 		return -ENOMEM;
801 	return 0;
802 }
803 
804 void snd_p16v_free_pm_buffer(struct snd_emu10k1 *emu)
805 {
806 	vfree(emu->p16v_saved);
807 }
808 
809 void snd_p16v_suspend(struct snd_emu10k1 *emu)
810 {
811 	int i, ch;
812 	unsigned int *val;
813 
814 	val = emu->p16v_saved;
815 	for (ch = 0; ch < NUM_CHS; ch++)
816 		for (i = 0; i < 0x80; i++, val++)
817 			*val = snd_emu10k1_ptr20_read(emu, i, ch);
818 }
819 
820 void snd_p16v_resume(struct snd_emu10k1 *emu)
821 {
822 	int i, ch;
823 	unsigned int *val;
824 
825 	val = emu->p16v_saved;
826 	for (ch = 0; ch < NUM_CHS; ch++)
827 		for (i = 0; i < 0x80; i++, val++)
828 			snd_emu10k1_ptr20_write(emu, i, ch, *val);
829 }
830 #endif
831