xref: /openbmc/linux/sound/pci/emu10k1/p16v.c (revision 9d2f3863)
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 */
snd_p16v_pcm_open_playback_channel(struct snd_pcm_substream * substream,int channel_id)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 	runtime->sync.id32[0] = substream->pcm->card->number;
178 	runtime->sync.id32[1] = 'P';
179 	runtime->sync.id32[2] = 16;
180 	runtime->sync.id32[3] = 'V';
181 
182 	return 0;
183 }
184 
185 /* open_capture callback */
snd_p16v_pcm_open_capture_channel(struct snd_pcm_substream * substream,int channel_id)186 static int snd_p16v_pcm_open_capture_channel(struct snd_pcm_substream *substream, int channel_id)
187 {
188 	struct snd_pcm_runtime *runtime = substream->runtime;
189 	int err;
190 
191 	/*
192 	dev_dbg(emu->card->dev, "epcm device=%d, channel_id=%d\n",
193 		   substream->pcm->device, channel_id);
194 	*/
195 
196 	runtime->hw = snd_p16v_capture_hw;
197 
198 	err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
199 	if (err < 0)
200 		return err;
201 
202 	return 0;
203 }
204 
205 
206 /* close callback */
snd_p16v_pcm_close_playback(struct snd_pcm_substream * substream)207 static int snd_p16v_pcm_close_playback(struct snd_pcm_substream *substream)
208 {
209 	return 0;
210 }
211 
212 /* close callback */
snd_p16v_pcm_close_capture(struct snd_pcm_substream * substream)213 static int snd_p16v_pcm_close_capture(struct snd_pcm_substream *substream)
214 {
215 	return 0;
216 }
217 
snd_p16v_pcm_open_playback_front(struct snd_pcm_substream * substream)218 static int snd_p16v_pcm_open_playback_front(struct snd_pcm_substream *substream)
219 {
220 	return snd_p16v_pcm_open_playback_channel(substream, PCM_FRONT_CHANNEL);
221 }
222 
snd_p16v_pcm_open_capture(struct snd_pcm_substream * substream)223 static int snd_p16v_pcm_open_capture(struct snd_pcm_substream *substream)
224 {
225 	// Only using channel 0 for now, but the card has 2 channels.
226 	return snd_p16v_pcm_open_capture_channel(substream, 0);
227 }
228 
229 /* prepare playback callback */
snd_p16v_pcm_prepare_playback(struct snd_pcm_substream * substream)230 static int snd_p16v_pcm_prepare_playback(struct snd_pcm_substream *substream)
231 {
232 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
233 	struct snd_pcm_runtime *runtime = substream->runtime;
234 	int channel = substream->pcm->device - emu->p16v_device_offset;
235 	u32 *table_base = (u32 *)(emu->p16v_buffer->area+(8*16*channel));
236 	u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
237 	int i;
238 	u32 tmp;
239 
240 #if 0 /* debug */
241 	dev_dbg(emu->card->dev,
242 		"prepare:channel_number=%d, rate=%d, "
243 		   "format=0x%x, channels=%d, buffer_size=%ld, "
244 		   "period_size=%ld, periods=%u, frames_to_bytes=%d\n",
245 		   channel, runtime->rate, runtime->format, runtime->channels,
246 		   runtime->buffer_size, runtime->period_size,
247 		   runtime->periods, frames_to_bytes(runtime, 1));
248 	dev_dbg(emu->card->dev,
249 		"dma_addr=%x, dma_area=%p, table_base=%p\n",
250 		   runtime->dma_addr, runtime->dma_area, table_base);
251 	dev_dbg(emu->card->dev,
252 		"dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",
253 		   emu->p16v_buffer->addr, emu->p16v_buffer->area,
254 		   emu->p16v_buffer->bytes);
255 #endif /* debug */
256 	tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
257 	tmp &= ~(A_SPDIF_RATE_MASK | A_EHC_SRC48_MASK);
258         switch (runtime->rate) {
259 	case 44100:
260 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel,
261 				tmp | A_SPDIF_44100 | A_EHC_SRC48_44);
262 	  break;
263 	case 96000:
264 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel,
265 				tmp | A_SPDIF_96000 | A_EHC_SRC48_96);
266 	  break;
267 	case 192000:
268 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel,
269 				tmp | A_SPDIF_192000 | A_EHC_SRC48_192);
270 	  break;
271 	case 48000:
272 	default:
273 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel,
274 				tmp | A_SPDIF_48000 | A_EHC_SRC48_BYPASS);
275 	  break;
276 	}
277 	/* FIXME: Check emu->buffer.size before actually writing to it. */
278 	for(i = 0; i < runtime->periods; i++) {
279 		table_base[i*2]=runtime->dma_addr+(i*period_size_bytes);
280 		table_base[(i*2)+1]=period_size_bytes<<16;
281 	}
282 
283 	snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_ADDR, channel, emu->p16v_buffer->addr+(8*16*channel));
284 	snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19);
285 	snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_PTR, channel, 0);
286 	snd_emu10k1_ptr20_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr);
287 	//snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes
288 	snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, 0); // buffer size in bytes
289 	snd_emu10k1_ptr20_write(emu, PLAYBACK_POINTER, channel, 0);
290 	snd_emu10k1_ptr20_write(emu, PLAYBACK_FIFO_END_ADDRESS, channel, 0);
291 	snd_emu10k1_ptr20_write(emu, PLAYBACK_FIFO_POINTER, channel, 0);
292 
293 	return 0;
294 }
295 
296 /* prepare capture callback */
snd_p16v_pcm_prepare_capture(struct snd_pcm_substream * substream)297 static int snd_p16v_pcm_prepare_capture(struct snd_pcm_substream *substream)
298 {
299 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
300 	struct snd_pcm_runtime *runtime = substream->runtime;
301 	int channel = substream->pcm->device - emu->p16v_device_offset;
302 
303 	/*
304 	dev_dbg(emu->card->dev, "prepare capture:channel_number=%d, rate=%d, "
305 	       "format=0x%x, channels=%d, buffer_size=%ld, period_size=%ld, "
306 	       "frames_to_bytes=%d\n",
307 	       channel, runtime->rate, runtime->format, runtime->channels,
308 	       runtime->buffer_size, runtime->period_size,
309 	       frames_to_bytes(runtime, 1));
310 	*/
311         switch (runtime->rate) {
312 	case 44100:
313 	  snd_emu10k1_ptr_write(emu, A_I2S_CAPTURE_RATE, channel, A_I2S_CAPTURE_44100);
314 	  break;
315 	case 96000:
316 	  snd_emu10k1_ptr_write(emu, A_I2S_CAPTURE_RATE, channel, A_I2S_CAPTURE_96000);
317 	  break;
318 	case 192000:
319 	  snd_emu10k1_ptr_write(emu, A_I2S_CAPTURE_RATE, channel, A_I2S_CAPTURE_192000);
320 	  break;
321 	case 48000:
322 	default:
323 	  snd_emu10k1_ptr_write(emu, A_I2S_CAPTURE_RATE, channel, A_I2S_CAPTURE_48000);
324 	  break;
325 	}
326 	/* FIXME: Check emu->buffer.size before actually writing to it. */
327 	snd_emu10k1_ptr20_write(emu, CAPTURE_FIFO_POINTER, channel, 0);
328 	snd_emu10k1_ptr20_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);
329 	snd_emu10k1_ptr20_write(emu, CAPTURE_BUFFER_SIZE, channel, frames_to_bytes(runtime, runtime->buffer_size) << 16); // buffer size in bytes
330 	snd_emu10k1_ptr20_write(emu, CAPTURE_POINTER, channel, 0);
331 	//snd_emu10k1_ptr20_write(emu, CAPTURE_SOURCE, 0x0, 0x333300e4); /* Select MIC or Line in */
332 	//snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) | (0x110000<<channel));
333 
334 	return 0;
335 }
336 
snd_p16v_intr_enable(struct snd_emu10k1 * emu,unsigned int intrenb)337 static void snd_p16v_intr_enable(struct snd_emu10k1 *emu, unsigned int intrenb)
338 {
339 	unsigned long flags;
340 	unsigned int enable;
341 
342 	spin_lock_irqsave(&emu->emu_lock, flags);
343 	enable = inl(emu->port + INTE2) | intrenb;
344 	outl(enable, emu->port + INTE2);
345 	spin_unlock_irqrestore(&emu->emu_lock, flags);
346 }
347 
snd_p16v_intr_disable(struct snd_emu10k1 * emu,unsigned int intrenb)348 static void snd_p16v_intr_disable(struct snd_emu10k1 *emu, unsigned int intrenb)
349 {
350 	unsigned long flags;
351 	unsigned int disable;
352 
353 	spin_lock_irqsave(&emu->emu_lock, flags);
354 	disable = inl(emu->port + INTE2) & (~intrenb);
355 	outl(disable, emu->port + INTE2);
356 	spin_unlock_irqrestore(&emu->emu_lock, flags);
357 }
358 
snd_p16v_interrupt(struct snd_emu10k1 * emu)359 static void snd_p16v_interrupt(struct snd_emu10k1 *emu)
360 {
361 	unsigned int status;
362 
363 	while ((status = inl(emu->port + IPR2)) != 0) {
364 		u32 mask = INTE2_PLAYBACK_CH_0_LOOP;  /* Full Loop */
365 
366 		/* dev_dbg(emu->card->dev, "p16v status=0x%x\n", status); */
367 		if (status & mask) {
368 			struct snd_pcm_substream *substream =
369 					emu->pcm_p16v->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
370 			struct snd_pcm_runtime *runtime = substream->runtime;
371 
372 			if (runtime && runtime->private_data) {
373 				snd_pcm_period_elapsed(substream);
374 			} else {
375 				dev_err(emu->card->dev,
376 					"p16v: status: 0x%08x, mask=0x%08x\n",
377 					status, mask);
378 			}
379 		}
380 		if (status & 0x110000) {
381 			struct snd_pcm_substream *substream =
382 					emu->pcm_p16v->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
383 			struct snd_pcm_runtime *runtime = substream->runtime;
384 
385 			/* dev_info(emu->card->dev, "capture int found\n"); */
386 			if (runtime && runtime->private_data) {
387 				/* dev_info(emu->card->dev, "capture period_elapsed\n"); */
388 				snd_pcm_period_elapsed(substream);
389 			}
390 		}
391 		outl(status, emu->port + IPR2); /* ack all */
392 	}
393 }
394 
395 /* trigger_playback callback */
snd_p16v_pcm_trigger_playback(struct snd_pcm_substream * substream,int cmd)396 static int snd_p16v_pcm_trigger_playback(struct snd_pcm_substream *substream,
397 				    int cmd)
398 {
399 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
400 	struct snd_pcm_runtime *runtime;
401 	int channel;
402 	int result = 0;
403         struct snd_pcm_substream *s;
404 	u32 basic = 0;
405 	u32 inte = 0;
406 	int running = 0;
407 
408 	switch (cmd) {
409 	case SNDRV_PCM_TRIGGER_START:
410 		running=1;
411 		break;
412 	case SNDRV_PCM_TRIGGER_STOP:
413 	default:
414 		running = 0;
415 		break;
416 	}
417         snd_pcm_group_for_each_entry(s, substream) {
418 		if (snd_pcm_substream_chip(s) != emu ||
419 		    s->stream != SNDRV_PCM_STREAM_PLAYBACK)
420 			continue;
421 		runtime = s->runtime;
422 		channel = substream->pcm->device-emu->p16v_device_offset;
423 		/* dev_dbg(emu->card->dev, "p16v channel=%d\n", channel); */
424 		runtime->private_data = (void *)(ptrdiff_t)running;
425 		basic |= (0x1<<channel);
426 		inte |= (INTE2_PLAYBACK_CH_0_LOOP<<channel);
427                 snd_pcm_trigger_done(s, substream);
428         }
429 	/* dev_dbg(emu->card->dev, "basic=0x%x, inte=0x%x\n", basic, inte); */
430 
431 	switch (cmd) {
432 	case SNDRV_PCM_TRIGGER_START:
433 		snd_p16v_intr_enable(emu, inte);
434 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)| (basic));
435 		break;
436 	case SNDRV_PCM_TRIGGER_STOP:
437 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(basic));
438 		snd_p16v_intr_disable(emu, inte);
439 		break;
440 	default:
441 		result = -EINVAL;
442 		break;
443 	}
444 	return result;
445 }
446 
447 /* trigger_capture callback */
snd_p16v_pcm_trigger_capture(struct snd_pcm_substream * substream,int cmd)448 static int snd_p16v_pcm_trigger_capture(struct snd_pcm_substream *substream,
449                                    int cmd)
450 {
451 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
452 	struct snd_pcm_runtime *runtime = substream->runtime;
453 	int channel = 0;
454 	int result = 0;
455 	u32 inte = INTE2_CAPTURE_CH_0_LOOP | INTE2_CAPTURE_CH_0_HALF_LOOP;
456 
457 	switch (cmd) {
458 	case SNDRV_PCM_TRIGGER_START:
459 		snd_p16v_intr_enable(emu, inte);
460 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)|(0x100<<channel));
461 		runtime->private_data = (void *)1;
462 		break;
463 	case SNDRV_PCM_TRIGGER_STOP:
464 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(0x100<<channel));
465 		snd_p16v_intr_disable(emu, inte);
466 		//snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) & ~(0x110000<<channel));
467 		runtime->private_data = NULL;
468 		break;
469 	default:
470 		result = -EINVAL;
471 		break;
472 	}
473 	return result;
474 }
475 
476 /* pointer_playback callback */
477 static snd_pcm_uframes_t
snd_p16v_pcm_pointer_playback(struct snd_pcm_substream * substream)478 snd_p16v_pcm_pointer_playback(struct snd_pcm_substream *substream)
479 {
480 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
481 	struct snd_pcm_runtime *runtime = substream->runtime;
482 	snd_pcm_uframes_t ptr, ptr1, ptr2,ptr3,ptr4 = 0;
483 	int channel = substream->pcm->device - emu->p16v_device_offset;
484 
485 	if (!runtime->private_data)
486 		return 0;
487 
488 	ptr3 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
489 	ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
490 	ptr4 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
491 	if (ptr3 != ptr4) ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
492 	ptr2 = bytes_to_frames(runtime, ptr1);
493 	ptr2+= (ptr4 >> 3) * runtime->period_size;
494 	ptr=ptr2;
495         if (ptr >= runtime->buffer_size)
496 		ptr -= runtime->buffer_size;
497 
498 	return ptr;
499 }
500 
501 /* pointer_capture callback */
502 static snd_pcm_uframes_t
snd_p16v_pcm_pointer_capture(struct snd_pcm_substream * substream)503 snd_p16v_pcm_pointer_capture(struct snd_pcm_substream *substream)
504 {
505 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
506 	struct snd_pcm_runtime *runtime = substream->runtime;
507 	snd_pcm_uframes_t ptr, ptr1, ptr2 = 0;
508 	int channel = 0;
509 
510 	if (!runtime->private_data)
511 		return 0;
512 
513 	ptr1 = snd_emu10k1_ptr20_read(emu, CAPTURE_POINTER, channel);
514 	ptr2 = bytes_to_frames(runtime, ptr1);
515 	ptr=ptr2;
516 	if (ptr >= runtime->buffer_size) {
517 		ptr -= runtime->buffer_size;
518 		dev_warn(emu->card->dev, "buffer capture limited!\n");
519 	}
520 	/*
521 	dev_dbg(emu->card->dev, "ptr1 = 0x%lx, ptr2=0x%lx, ptr=0x%lx, "
522 	       "buffer_size = 0x%x, period_size = 0x%x, bits=%d, rate=%d\n",
523 	       ptr1, ptr2, ptr, (int)runtime->buffer_size,
524 	       (int)runtime->period_size, (int)runtime->frame_bits,
525 	       (int)runtime->rate);
526 	*/
527 	return ptr;
528 }
529 
530 /* operators */
531 static const struct snd_pcm_ops snd_p16v_playback_front_ops = {
532 	.open =        snd_p16v_pcm_open_playback_front,
533 	.close =       snd_p16v_pcm_close_playback,
534 	.prepare =     snd_p16v_pcm_prepare_playback,
535 	.trigger =     snd_p16v_pcm_trigger_playback,
536 	.pointer =     snd_p16v_pcm_pointer_playback,
537 };
538 
539 static const struct snd_pcm_ops snd_p16v_capture_ops = {
540 	.open =        snd_p16v_pcm_open_capture,
541 	.close =       snd_p16v_pcm_close_capture,
542 	.prepare =     snd_p16v_pcm_prepare_capture,
543 	.trigger =     snd_p16v_pcm_trigger_capture,
544 	.pointer =     snd_p16v_pcm_pointer_capture,
545 };
546 
snd_p16v_pcm(struct snd_emu10k1 * emu,int device)547 int snd_p16v_pcm(struct snd_emu10k1 *emu, int device)
548 {
549 	struct snd_pcm *pcm;
550 	struct snd_pcm_substream *substream;
551 	int err;
552         int capture=1;
553 
554 	/* dev_dbg(emu->card->dev, "snd_p16v_pcm called. device=%d\n", device); */
555 	emu->p16v_device_offset = device;
556 
557 	err = snd_pcm_new(emu->card, "p16v", device, 1, capture, &pcm);
558 	if (err < 0)
559 		return err;
560 
561 	pcm->private_data = emu;
562 	// Single playback 8 channel device.
563 	// Single capture 2 channel device.
564 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_p16v_playback_front_ops);
565 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_p16v_capture_ops);
566 
567 	pcm->info_flags = 0;
568 	pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
569 	strcpy(pcm->name, "p16v");
570 	emu->pcm_p16v = pcm;
571 	emu->p16v_interrupt = snd_p16v_interrupt;
572 
573 	for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
574 	    substream;
575 	    substream = substream->next) {
576 		snd_pcm_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV,
577 					   &emu->pci->dev,
578 					   (65536 - 64) * 8,
579 					   (65536 - 64) * 8);
580 		/*
581 		dev_dbg(emu->card->dev,
582 			   "preallocate playback substream: err=%d\n", err);
583 		*/
584 	}
585 
586 	for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
587 	      substream;
588 	      substream = substream->next) {
589 		snd_pcm_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV,
590 					   &emu->pci->dev,
591 					   65536 - 64, 65536 - 64);
592 		/*
593 		dev_dbg(emu->card->dev,
594 			   "preallocate capture substream: err=%d\n", err);
595 		*/
596 	}
597 
598 	return 0;
599 }
600 
snd_p16v_volume_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)601 static int snd_p16v_volume_info(struct snd_kcontrol *kcontrol,
602 				struct snd_ctl_elem_info *uinfo)
603 {
604         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
605         uinfo->count = 2;
606         uinfo->value.integer.min = 0;
607         uinfo->value.integer.max = 255;
608         return 0;
609 }
610 
snd_p16v_volume_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)611 static int snd_p16v_volume_get(struct snd_kcontrol *kcontrol,
612 			       struct snd_ctl_elem_value *ucontrol)
613 {
614         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
615 	int high_low = (kcontrol->private_value >> 8) & 0xff;
616 	int reg = kcontrol->private_value & 0xff;
617 	u32 value;
618 
619 	value = snd_emu10k1_ptr20_read(emu, reg, high_low);
620 	if (high_low) {
621 		ucontrol->value.integer.value[0] = 0xff - ((value >> 24) & 0xff); /* Left */
622 		ucontrol->value.integer.value[1] = 0xff - ((value >> 16) & 0xff); /* Right */
623 	} else {
624 		ucontrol->value.integer.value[0] = 0xff - ((value >> 8) & 0xff); /* Left */
625 		ucontrol->value.integer.value[1] = 0xff - ((value >> 0) & 0xff); /* Right */
626 	}
627 	return 0;
628 }
629 
snd_p16v_volume_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)630 static int snd_p16v_volume_put(struct snd_kcontrol *kcontrol,
631 			       struct snd_ctl_elem_value *ucontrol)
632 {
633         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
634 	int high_low = (kcontrol->private_value >> 8) & 0xff;
635 	int reg = kcontrol->private_value & 0xff;
636         u32 value, oval;
637 
638 	oval = value = snd_emu10k1_ptr20_read(emu, reg, 0);
639 	if (high_low == 1) {
640 		value &= 0xffff;
641 		value |= ((0xff - ucontrol->value.integer.value[0]) << 24) |
642 			((0xff - ucontrol->value.integer.value[1]) << 16);
643 	} else {
644 		value &= 0xffff0000;
645 		value |= ((0xff - ucontrol->value.integer.value[0]) << 8) |
646 			((0xff - ucontrol->value.integer.value[1]) );
647 	}
648 	if (value != oval) {
649 		snd_emu10k1_ptr20_write(emu, reg, 0, value);
650 		return 1;
651 	}
652 	return 0;
653 }
654 
snd_p16v_capture_source_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)655 static int snd_p16v_capture_source_info(struct snd_kcontrol *kcontrol,
656 					struct snd_ctl_elem_info *uinfo)
657 {
658 	static const char * const texts[8] = {
659 		"SPDIF", "I2S", "SRC48", "SRCMulti_SPDIF", "SRCMulti_I2S",
660 		"CDIF", "FX", "AC97"
661 	};
662 
663 	return snd_ctl_enum_info(uinfo, 1, 8, texts);
664 }
665 
snd_p16v_capture_source_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)666 static int snd_p16v_capture_source_get(struct snd_kcontrol *kcontrol,
667 					struct snd_ctl_elem_value *ucontrol)
668 {
669 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
670 
671 	ucontrol->value.enumerated.item[0] = emu->p16v_capture_source;
672 	return 0;
673 }
674 
snd_p16v_capture_source_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)675 static int snd_p16v_capture_source_put(struct snd_kcontrol *kcontrol,
676 					struct snd_ctl_elem_value *ucontrol)
677 {
678 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
679 	unsigned int val;
680 	int change = 0;
681 	u32 mask;
682 	u32 source;
683 
684 	val = ucontrol->value.enumerated.item[0] ;
685 	if (val > 7)
686 		return -EINVAL;
687 	change = (emu->p16v_capture_source != val);
688 	if (change) {
689 		emu->p16v_capture_source = val;
690 		source = (val << 28) | (val << 24) | (val << 20) | (val << 16);
691 		mask = snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & 0xffff;
692 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, source | mask);
693 	}
694         return change;
695 }
696 
snd_p16v_capture_channel_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)697 static int snd_p16v_capture_channel_info(struct snd_kcontrol *kcontrol,
698 					 struct snd_ctl_elem_info *uinfo)
699 {
700 	static const char * const texts[4] = { "0", "1", "2", "3", };
701 
702 	return snd_ctl_enum_info(uinfo, 1, 4, texts);
703 }
704 
snd_p16v_capture_channel_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)705 static int snd_p16v_capture_channel_get(struct snd_kcontrol *kcontrol,
706 					struct snd_ctl_elem_value *ucontrol)
707 {
708 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
709 
710 	ucontrol->value.enumerated.item[0] = emu->p16v_capture_channel;
711 	return 0;
712 }
713 
snd_p16v_capture_channel_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)714 static int snd_p16v_capture_channel_put(struct snd_kcontrol *kcontrol,
715 					struct snd_ctl_elem_value *ucontrol)
716 {
717 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
718 	unsigned int val;
719 	int change = 0;
720 	u32 tmp;
721 
722 	val = ucontrol->value.enumerated.item[0] ;
723 	if (val > 3)
724 		return -EINVAL;
725 	change = (emu->p16v_capture_channel != val);
726 	if (change) {
727 		emu->p16v_capture_channel = val;
728 		tmp = snd_emu10k1_ptr20_read(emu, CAPTURE_P16V_SOURCE, 0) & 0xfffc;
729 		snd_emu10k1_ptr20_write(emu, CAPTURE_P16V_SOURCE, 0, tmp | val);
730 	}
731         return change;
732 }
733 static const DECLARE_TLV_DB_SCALE(snd_p16v_db_scale1, -5175, 25, 1);
734 
735 #define P16V_VOL(xname,xreg,xhl) { \
736 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
737         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |             \
738                   SNDRV_CTL_ELEM_ACCESS_TLV_READ,               \
739 	.info = snd_p16v_volume_info, \
740 	.get = snd_p16v_volume_get, \
741 	.put = snd_p16v_volume_put, \
742 	.tlv = { .p = snd_p16v_db_scale1 },	\
743 	.private_value = ((xreg) | ((xhl) << 8)) \
744 }
745 
746 static const struct snd_kcontrol_new p16v_mixer_controls[] = {
747 	P16V_VOL("HD Analog Front Playback Volume", PLAYBACK_VOLUME_MIXER9, 0),
748 	P16V_VOL("HD Analog Rear Playback Volume", PLAYBACK_VOLUME_MIXER10, 1),
749 	P16V_VOL("HD Analog Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER9, 1),
750 	P16V_VOL("HD Analog Side Playback Volume", PLAYBACK_VOLUME_MIXER10, 0),
751 	P16V_VOL("HD SPDIF Front Playback Volume", PLAYBACK_VOLUME_MIXER7, 0),
752 	P16V_VOL("HD SPDIF Rear Playback Volume", PLAYBACK_VOLUME_MIXER8, 1),
753 	P16V_VOL("HD SPDIF Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER7, 1),
754 	P16V_VOL("HD SPDIF Side Playback Volume", PLAYBACK_VOLUME_MIXER8, 0),
755 	{
756 		.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
757 		.name =		"HD source Capture",
758 		.info =		snd_p16v_capture_source_info,
759 		.get =		snd_p16v_capture_source_get,
760 		.put =		snd_p16v_capture_source_put
761 	},
762 	{
763 		.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
764 		.name =		"HD channel Capture",
765 		.info =		snd_p16v_capture_channel_info,
766 		.get =		snd_p16v_capture_channel_get,
767 		.put =		snd_p16v_capture_channel_put
768 	},
769 };
770 
771 
snd_p16v_mixer(struct snd_emu10k1 * emu)772 int snd_p16v_mixer(struct snd_emu10k1 *emu)
773 {
774 	int i, err;
775         struct snd_card *card = emu->card;
776 
777 	for (i = 0; i < ARRAY_SIZE(p16v_mixer_controls); i++) {
778 		err = snd_ctl_add(card, snd_ctl_new1(&p16v_mixer_controls[i], emu));
779 		if (err < 0)
780 			return err;
781 	}
782         return 0;
783 }
784 
785 #ifdef CONFIG_PM_SLEEP
786 
787 #define NUM_CHS	1	/* up to 4, but only first channel is used */
788 
snd_p16v_alloc_pm_buffer(struct snd_emu10k1 * emu)789 int snd_p16v_alloc_pm_buffer(struct snd_emu10k1 *emu)
790 {
791 	emu->p16v_saved = vmalloc(array_size(NUM_CHS * 4, 0x80));
792 	if (! emu->p16v_saved)
793 		return -ENOMEM;
794 	return 0;
795 }
796 
snd_p16v_free_pm_buffer(struct snd_emu10k1 * emu)797 void snd_p16v_free_pm_buffer(struct snd_emu10k1 *emu)
798 {
799 	vfree(emu->p16v_saved);
800 }
801 
snd_p16v_suspend(struct snd_emu10k1 * emu)802 void snd_p16v_suspend(struct snd_emu10k1 *emu)
803 {
804 	int i, ch;
805 	unsigned int *val;
806 
807 	val = emu->p16v_saved;
808 	for (ch = 0; ch < NUM_CHS; ch++)
809 		for (i = 0; i < 0x80; i++, val++)
810 			*val = snd_emu10k1_ptr20_read(emu, i, ch);
811 }
812 
snd_p16v_resume(struct snd_emu10k1 * emu)813 void snd_p16v_resume(struct snd_emu10k1 *emu)
814 {
815 	int i, ch;
816 	unsigned int *val;
817 
818 	val = emu->p16v_saved;
819 	for (ch = 0; ch < NUM_CHS; ch++)
820 		for (i = 0; i < 0x80; i++, val++)
821 			snd_emu10k1_ptr20_write(emu, i, ch, *val);
822 }
823 #endif
824