xref: /linux/sound/pci/emu10k1/p16v.c (revision 05a54fa773284d1a7923cdfdd8f0c8dabb98bd26)
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 int enable;
346 
347 	guard(spinlock_irqsave)(&emu->emu_lock);
348 	enable = inl(emu->port + INTE2) | intrenb;
349 	outl(enable, emu->port + INTE2);
350 }
351 
352 static void snd_p16v_intr_disable(struct snd_emu10k1 *emu, unsigned int intrenb)
353 {
354 	unsigned int disable;
355 
356 	guard(spinlock_irqsave)(&emu->emu_lock);
357 	disable = inl(emu->port + INTE2) & (~intrenb);
358 	outl(disable, emu->port + INTE2);
359 }
360 
361 static void snd_p16v_interrupt(struct snd_emu10k1 *emu)
362 {
363 	unsigned int status;
364 
365 	while ((status = inl(emu->port + IPR2)) != 0) {
366 		u32 mask = INTE2_PLAYBACK_CH_0_LOOP;  /* Full Loop */
367 
368 		/* dev_dbg(emu->card->dev, "p16v status=0x%x\n", status); */
369 		if (status & mask) {
370 			struct snd_pcm_substream *substream =
371 					emu->pcm_p16v->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
372 			struct snd_pcm_runtime *runtime = substream->runtime;
373 
374 			if (runtime && runtime->private_data) {
375 				snd_pcm_period_elapsed(substream);
376 			} else {
377 				dev_err(emu->card->dev,
378 					"p16v: status: 0x%08x, mask=0x%08x\n",
379 					status, mask);
380 			}
381 		}
382 		if (status & 0x110000) {
383 			struct snd_pcm_substream *substream =
384 					emu->pcm_p16v->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
385 			struct snd_pcm_runtime *runtime = substream->runtime;
386 
387 			/* dev_info(emu->card->dev, "capture int found\n"); */
388 			if (runtime && runtime->private_data) {
389 				/* dev_info(emu->card->dev, "capture period_elapsed\n"); */
390 				snd_pcm_period_elapsed(substream);
391 			}
392 		}
393 		outl(status, emu->port + IPR2); /* ack all */
394 	}
395 }
396 
397 /* trigger_playback callback */
398 static int snd_p16v_pcm_trigger_playback(struct snd_pcm_substream *substream,
399 				    int cmd)
400 {
401 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
402 	struct snd_pcm_runtime *runtime;
403 	int channel;
404 	int result = 0;
405         struct snd_pcm_substream *s;
406 	u32 basic = 0;
407 	u32 inte = 0;
408 	int running = 0;
409 
410 	switch (cmd) {
411 	case SNDRV_PCM_TRIGGER_START:
412 		running=1;
413 		break;
414 	case SNDRV_PCM_TRIGGER_STOP:
415 	default:
416 		running = 0;
417 		break;
418 	}
419         snd_pcm_group_for_each_entry(s, substream) {
420 		if (snd_pcm_substream_chip(s) != emu ||
421 		    s->stream != SNDRV_PCM_STREAM_PLAYBACK)
422 			continue;
423 		runtime = s->runtime;
424 		channel = substream->pcm->device-emu->p16v_device_offset;
425 		/* dev_dbg(emu->card->dev, "p16v channel=%d\n", channel); */
426 		runtime->private_data = (void *)(ptrdiff_t)running;
427 		basic |= (0x1<<channel);
428 		inte |= (INTE2_PLAYBACK_CH_0_LOOP<<channel);
429                 snd_pcm_trigger_done(s, substream);
430         }
431 	/* dev_dbg(emu->card->dev, "basic=0x%x, inte=0x%x\n", basic, inte); */
432 
433 	switch (cmd) {
434 	case SNDRV_PCM_TRIGGER_START:
435 		snd_p16v_intr_enable(emu, inte);
436 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)| (basic));
437 		break;
438 	case SNDRV_PCM_TRIGGER_STOP:
439 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(basic));
440 		snd_p16v_intr_disable(emu, inte);
441 		break;
442 	default:
443 		result = -EINVAL;
444 		break;
445 	}
446 	return result;
447 }
448 
449 /* trigger_capture callback */
450 static int snd_p16v_pcm_trigger_capture(struct snd_pcm_substream *substream,
451                                    int cmd)
452 {
453 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
454 	struct snd_pcm_runtime *runtime = substream->runtime;
455 	int channel = 0;
456 	int result = 0;
457 	u32 inte = INTE2_CAPTURE_CH_0_LOOP | INTE2_CAPTURE_CH_0_HALF_LOOP;
458 
459 	switch (cmd) {
460 	case SNDRV_PCM_TRIGGER_START:
461 		snd_p16v_intr_enable(emu, inte);
462 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)|(0x100<<channel));
463 		runtime->private_data = (void *)1;
464 		break;
465 	case SNDRV_PCM_TRIGGER_STOP:
466 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(0x100<<channel));
467 		snd_p16v_intr_disable(emu, inte);
468 		//snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) & ~(0x110000<<channel));
469 		runtime->private_data = NULL;
470 		break;
471 	default:
472 		result = -EINVAL;
473 		break;
474 	}
475 	return result;
476 }
477 
478 /* pointer_playback callback */
479 static snd_pcm_uframes_t
480 snd_p16v_pcm_pointer_playback(struct snd_pcm_substream *substream)
481 {
482 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
483 	struct snd_pcm_runtime *runtime = substream->runtime;
484 	snd_pcm_uframes_t ptr, ptr1, ptr2,ptr3,ptr4 = 0;
485 	int channel = substream->pcm->device - emu->p16v_device_offset;
486 
487 	if (!runtime->private_data)
488 		return 0;
489 
490 	ptr3 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
491 	ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
492 	ptr4 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
493 	if (ptr3 != ptr4) ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
494 	ptr2 = bytes_to_frames(runtime, ptr1);
495 	ptr2+= (ptr4 >> 3) * runtime->period_size;
496 	ptr=ptr2;
497         if (ptr >= runtime->buffer_size)
498 		ptr -= runtime->buffer_size;
499 
500 	return ptr;
501 }
502 
503 /* pointer_capture callback */
504 static snd_pcm_uframes_t
505 snd_p16v_pcm_pointer_capture(struct snd_pcm_substream *substream)
506 {
507 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
508 	struct snd_pcm_runtime *runtime = substream->runtime;
509 	snd_pcm_uframes_t ptr, ptr1, ptr2 = 0;
510 	int channel = 0;
511 
512 	if (!runtime->private_data)
513 		return 0;
514 
515 	ptr1 = snd_emu10k1_ptr20_read(emu, CAPTURE_POINTER, channel);
516 	ptr2 = bytes_to_frames(runtime, ptr1);
517 	ptr=ptr2;
518 	if (ptr >= runtime->buffer_size) {
519 		ptr -= runtime->buffer_size;
520 		dev_warn(emu->card->dev, "buffer capture limited!\n");
521 	}
522 	/*
523 	dev_dbg(emu->card->dev, "ptr1 = 0x%lx, ptr2=0x%lx, ptr=0x%lx, "
524 	       "buffer_size = 0x%x, period_size = 0x%x, bits=%d, rate=%d\n",
525 	       ptr1, ptr2, ptr, (int)runtime->buffer_size,
526 	       (int)runtime->period_size, (int)runtime->frame_bits,
527 	       (int)runtime->rate);
528 	*/
529 	return ptr;
530 }
531 
532 /* operators */
533 static const struct snd_pcm_ops snd_p16v_playback_front_ops = {
534 	.open =        snd_p16v_pcm_open_playback_front,
535 	.close =       snd_p16v_pcm_close_playback,
536 	.ioctl =       snd_p16v_pcm_ioctl_playback,
537 	.prepare =     snd_p16v_pcm_prepare_playback,
538 	.trigger =     snd_p16v_pcm_trigger_playback,
539 	.pointer =     snd_p16v_pcm_pointer_playback,
540 };
541 
542 static const struct snd_pcm_ops snd_p16v_capture_ops = {
543 	.open =        snd_p16v_pcm_open_capture,
544 	.close =       snd_p16v_pcm_close_capture,
545 	.prepare =     snd_p16v_pcm_prepare_capture,
546 	.trigger =     snd_p16v_pcm_trigger_capture,
547 	.pointer =     snd_p16v_pcm_pointer_capture,
548 };
549 
550 int snd_p16v_pcm(struct snd_emu10k1 *emu, int device)
551 {
552 	struct snd_pcm *pcm;
553 	struct snd_pcm_substream *substream;
554 	int err;
555         int capture=1;
556 
557 	/* dev_dbg(emu->card->dev, "snd_p16v_pcm called. device=%d\n", device); */
558 	emu->p16v_device_offset = device;
559 
560 	err = snd_pcm_new(emu->card, "p16v", device, 1, capture, &pcm);
561 	if (err < 0)
562 		return err;
563 
564 	pcm->private_data = emu;
565 	// Single playback 8 channel device.
566 	// Single capture 2 channel device.
567 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_p16v_playback_front_ops);
568 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_p16v_capture_ops);
569 
570 	pcm->info_flags = 0;
571 	pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
572 	strscpy(pcm->name, "p16v");
573 	emu->pcm_p16v = pcm;
574 	emu->p16v_interrupt = snd_p16v_interrupt;
575 
576 	for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
577 	    substream;
578 	    substream = substream->next) {
579 		snd_pcm_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV,
580 					   &emu->pci->dev,
581 					   (65536 - 64) * 8,
582 					   (65536 - 64) * 8);
583 		/*
584 		dev_dbg(emu->card->dev,
585 			   "preallocate playback substream: err=%d\n", err);
586 		*/
587 	}
588 
589 	for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
590 	      substream;
591 	      substream = substream->next) {
592 		snd_pcm_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV,
593 					   &emu->pci->dev,
594 					   65536 - 64, 65536 - 64);
595 		/*
596 		dev_dbg(emu->card->dev,
597 			   "preallocate capture substream: err=%d\n", err);
598 		*/
599 	}
600 
601 	return 0;
602 }
603 
604 static int snd_p16v_volume_info(struct snd_kcontrol *kcontrol,
605 				struct snd_ctl_elem_info *uinfo)
606 {
607         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
608         uinfo->count = 2;
609         uinfo->value.integer.min = 0;
610         uinfo->value.integer.max = 255;
611         return 0;
612 }
613 
614 static int snd_p16v_volume_get(struct snd_kcontrol *kcontrol,
615 			       struct snd_ctl_elem_value *ucontrol)
616 {
617         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
618 	int high_low = (kcontrol->private_value >> 8) & 0xff;
619 	int reg = kcontrol->private_value & 0xff;
620 	u32 value;
621 
622 	value = snd_emu10k1_ptr20_read(emu, reg, high_low);
623 	if (high_low) {
624 		ucontrol->value.integer.value[0] = 0xff - ((value >> 24) & 0xff); /* Left */
625 		ucontrol->value.integer.value[1] = 0xff - ((value >> 16) & 0xff); /* Right */
626 	} else {
627 		ucontrol->value.integer.value[0] = 0xff - ((value >> 8) & 0xff); /* Left */
628 		ucontrol->value.integer.value[1] = 0xff - ((value >> 0) & 0xff); /* Right */
629 	}
630 	return 0;
631 }
632 
633 static int snd_p16v_volume_put(struct snd_kcontrol *kcontrol,
634 			       struct snd_ctl_elem_value *ucontrol)
635 {
636         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
637 	int high_low = (kcontrol->private_value >> 8) & 0xff;
638 	int reg = kcontrol->private_value & 0xff;
639         u32 value, oval;
640 
641 	oval = value = snd_emu10k1_ptr20_read(emu, reg, 0);
642 	if (high_low == 1) {
643 		value &= 0xffff;
644 		value |= ((0xff - ucontrol->value.integer.value[0]) << 24) |
645 			((0xff - ucontrol->value.integer.value[1]) << 16);
646 	} else {
647 		value &= 0xffff0000;
648 		value |= ((0xff - ucontrol->value.integer.value[0]) << 8) |
649 			((0xff - ucontrol->value.integer.value[1]) );
650 	}
651 	if (value != oval) {
652 		snd_emu10k1_ptr20_write(emu, reg, 0, value);
653 		return 1;
654 	}
655 	return 0;
656 }
657 
658 static int snd_p16v_capture_source_info(struct snd_kcontrol *kcontrol,
659 					struct snd_ctl_elem_info *uinfo)
660 {
661 	static const char * const texts[8] = {
662 		"SPDIF", "I2S", "SRC48", "SRCMulti_SPDIF", "SRCMulti_I2S",
663 		"CDIF", "FX", "AC97"
664 	};
665 
666 	return snd_ctl_enum_info(uinfo, 1, 8, texts);
667 }
668 
669 static int snd_p16v_capture_source_get(struct snd_kcontrol *kcontrol,
670 					struct snd_ctl_elem_value *ucontrol)
671 {
672 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
673 
674 	ucontrol->value.enumerated.item[0] = emu->p16v_capture_source;
675 	return 0;
676 }
677 
678 static int snd_p16v_capture_source_put(struct snd_kcontrol *kcontrol,
679 					struct snd_ctl_elem_value *ucontrol)
680 {
681 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
682 	unsigned int val;
683 	int change = 0;
684 	u32 mask;
685 	u32 source;
686 
687 	val = ucontrol->value.enumerated.item[0] ;
688 	if (val > 7)
689 		return -EINVAL;
690 	change = (emu->p16v_capture_source != val);
691 	if (change) {
692 		emu->p16v_capture_source = val;
693 		source = (val << 28) | (val << 24) | (val << 20) | (val << 16);
694 		mask = snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & 0xffff;
695 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, source | mask);
696 	}
697         return change;
698 }
699 
700 static int snd_p16v_capture_channel_info(struct snd_kcontrol *kcontrol,
701 					 struct snd_ctl_elem_info *uinfo)
702 {
703 	static const char * const texts[4] = { "0", "1", "2", "3", };
704 
705 	return snd_ctl_enum_info(uinfo, 1, 4, texts);
706 }
707 
708 static int snd_p16v_capture_channel_get(struct snd_kcontrol *kcontrol,
709 					struct snd_ctl_elem_value *ucontrol)
710 {
711 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
712 
713 	ucontrol->value.enumerated.item[0] = emu->p16v_capture_channel;
714 	return 0;
715 }
716 
717 static int snd_p16v_capture_channel_put(struct snd_kcontrol *kcontrol,
718 					struct snd_ctl_elem_value *ucontrol)
719 {
720 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
721 	unsigned int val;
722 	int change = 0;
723 	u32 tmp;
724 
725 	val = ucontrol->value.enumerated.item[0] ;
726 	if (val > 3)
727 		return -EINVAL;
728 	change = (emu->p16v_capture_channel != val);
729 	if (change) {
730 		emu->p16v_capture_channel = val;
731 		tmp = snd_emu10k1_ptr20_read(emu, CAPTURE_P16V_SOURCE, 0) & 0xfffc;
732 		snd_emu10k1_ptr20_write(emu, CAPTURE_P16V_SOURCE, 0, tmp | val);
733 	}
734         return change;
735 }
736 static const DECLARE_TLV_DB_SCALE(snd_p16v_db_scale1, -5175, 25, 1);
737 
738 #define P16V_VOL(xname,xreg,xhl) { \
739 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
740         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |             \
741                   SNDRV_CTL_ELEM_ACCESS_TLV_READ,               \
742 	.info = snd_p16v_volume_info, \
743 	.get = snd_p16v_volume_get, \
744 	.put = snd_p16v_volume_put, \
745 	.tlv = { .p = snd_p16v_db_scale1 },	\
746 	.private_value = ((xreg) | ((xhl) << 8)) \
747 }
748 
749 static const struct snd_kcontrol_new p16v_mixer_controls[] = {
750 	P16V_VOL("HD Analog Front Playback Volume", PLAYBACK_VOLUME_MIXER9, 0),
751 	P16V_VOL("HD Analog Rear Playback Volume", PLAYBACK_VOLUME_MIXER10, 1),
752 	P16V_VOL("HD Analog Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER9, 1),
753 	P16V_VOL("HD Analog Side Playback Volume", PLAYBACK_VOLUME_MIXER10, 0),
754 	P16V_VOL("HD SPDIF Front Playback Volume", PLAYBACK_VOLUME_MIXER7, 0),
755 	P16V_VOL("HD SPDIF Rear Playback Volume", PLAYBACK_VOLUME_MIXER8, 1),
756 	P16V_VOL("HD SPDIF Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER7, 1),
757 	P16V_VOL("HD SPDIF Side Playback Volume", PLAYBACK_VOLUME_MIXER8, 0),
758 	{
759 		.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
760 		.name =		"HD source Capture",
761 		.info =		snd_p16v_capture_source_info,
762 		.get =		snd_p16v_capture_source_get,
763 		.put =		snd_p16v_capture_source_put
764 	},
765 	{
766 		.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
767 		.name =		"HD channel Capture",
768 		.info =		snd_p16v_capture_channel_info,
769 		.get =		snd_p16v_capture_channel_get,
770 		.put =		snd_p16v_capture_channel_put
771 	},
772 };
773 
774 
775 int snd_p16v_mixer(struct snd_emu10k1 *emu)
776 {
777 	int i, err;
778         struct snd_card *card = emu->card;
779 
780 	for (i = 0; i < ARRAY_SIZE(p16v_mixer_controls); i++) {
781 		err = snd_ctl_add(card, snd_ctl_new1(&p16v_mixer_controls[i], emu));
782 		if (err < 0)
783 			return err;
784 	}
785         return 0;
786 }
787 
788 #ifdef CONFIG_PM_SLEEP
789 
790 #define NUM_CHS	1	/* up to 4, but only first channel is used */
791 
792 int snd_p16v_alloc_pm_buffer(struct snd_emu10k1 *emu)
793 {
794 	emu->p16v_saved = vmalloc(array_size(NUM_CHS * 4, 0x80));
795 	if (! emu->p16v_saved)
796 		return -ENOMEM;
797 	return 0;
798 }
799 
800 void snd_p16v_free_pm_buffer(struct snd_emu10k1 *emu)
801 {
802 	vfree(emu->p16v_saved);
803 }
804 
805 void snd_p16v_suspend(struct snd_emu10k1 *emu)
806 {
807 	int i, ch;
808 	unsigned int *val;
809 
810 	val = emu->p16v_saved;
811 	for (ch = 0; ch < NUM_CHS; ch++)
812 		for (i = 0; i < 0x80; i++, val++)
813 			*val = snd_emu10k1_ptr20_read(emu, i, ch);
814 }
815 
816 void snd_p16v_resume(struct snd_emu10k1 *emu)
817 {
818 	int i, ch;
819 	unsigned int *val;
820 
821 	val = emu->p16v_saved;
822 	for (ch = 0; ch < NUM_CHS; ch++)
823 		for (i = 0; i < 0x80; i++, val++)
824 			snd_emu10k1_ptr20_write(emu, i, ch, *val);
825 }
826 #endif
827