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 
snd_p16v_pcm_free_substream(struct snd_pcm_runtime * runtime)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 */
snd_p16v_pcm_open_playback_channel(struct snd_pcm_substream * substream,int channel_id)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 	err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
198 	if (err < 0)
199                 return err;
200 
201 	runtime->sync.id32[0] = substream->pcm->card->number;
202 	runtime->sync.id32[1] = 'P';
203 	runtime->sync.id32[2] = 16;
204 	runtime->sync.id32[3] = 'V';
205 
206 	return 0;
207 }
208 /* open_capture callback */
snd_p16v_pcm_open_capture_channel(struct snd_pcm_substream * substream,int channel_id)209 static int snd_p16v_pcm_open_capture_channel(struct snd_pcm_substream *substream, int channel_id)
210 {
211 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
212 	struct snd_emu10k1_voice *channel = &(emu->p16v_capture_voice);
213 	struct snd_emu10k1_pcm *epcm;
214 	struct snd_pcm_runtime *runtime = substream->runtime;
215 	int err;
216 
217 	epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
218 	/* dev_dbg(emu->card->dev, "epcm kcalloc: %p\n", epcm); */
219 
220 	if (epcm == NULL)
221 		return -ENOMEM;
222 	epcm->emu = emu;
223 	epcm->substream = substream;
224 	/*
225 	dev_dbg(emu->card->dev, "epcm device=%d, channel_id=%d\n",
226 		   substream->pcm->device, channel_id);
227 	*/
228 	runtime->private_data = epcm;
229 	runtime->private_free = snd_p16v_pcm_free_substream;
230 
231 	runtime->hw = snd_p16v_capture_hw;
232 
233 	channel->emu = emu;
234 	channel->number = channel_id;
235 
236 	channel->use=1;
237 #if 0 /* debug */
238 	dev_dbg(emu->card->dev,
239 		   "p16v: open channel_id=%d, channel=%p, use=0x%x\n",
240 		   channel_id, channel, channel->use);
241 	dev_dbg(emu->card->dev, "open:channel_id=%d, chip=%p, channel=%p\n",
242 	       channel_id, chip, channel);
243 #endif /* debug */
244 	/* channel->interrupt = snd_p16v_pcm_channel_interrupt; */
245 	channel->epcm = epcm;
246 	err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
247 	if (err < 0)
248 		return err;
249 
250 	return 0;
251 }
252 
253 
254 /* close callback */
snd_p16v_pcm_close_playback(struct snd_pcm_substream * substream)255 static int snd_p16v_pcm_close_playback(struct snd_pcm_substream *substream)
256 {
257 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
258 	//struct snd_pcm_runtime *runtime = substream->runtime;
259 	//struct snd_emu10k1_pcm *epcm = runtime->private_data;
260 	emu->p16v_voices[substream->pcm->device - emu->p16v_device_offset].use = 0;
261 	/* FIXME: maybe zero others */
262 	return 0;
263 }
264 
265 /* close callback */
snd_p16v_pcm_close_capture(struct snd_pcm_substream * substream)266 static int snd_p16v_pcm_close_capture(struct snd_pcm_substream *substream)
267 {
268 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
269 	//struct snd_pcm_runtime *runtime = substream->runtime;
270 	//struct snd_emu10k1_pcm *epcm = runtime->private_data;
271 	emu->p16v_capture_voice.use = 0;
272 	/* FIXME: maybe zero others */
273 	return 0;
274 }
275 
snd_p16v_pcm_open_playback_front(struct snd_pcm_substream * substream)276 static int snd_p16v_pcm_open_playback_front(struct snd_pcm_substream *substream)
277 {
278 	return snd_p16v_pcm_open_playback_channel(substream, PCM_FRONT_CHANNEL);
279 }
280 
snd_p16v_pcm_open_capture(struct snd_pcm_substream * substream)281 static int snd_p16v_pcm_open_capture(struct snd_pcm_substream *substream)
282 {
283 	// Only using channel 0 for now, but the card has 2 channels.
284 	return snd_p16v_pcm_open_capture_channel(substream, 0);
285 }
286 
287 /* prepare playback callback */
snd_p16v_pcm_prepare_playback(struct snd_pcm_substream * substream)288 static int snd_p16v_pcm_prepare_playback(struct snd_pcm_substream *substream)
289 {
290 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
291 	struct snd_pcm_runtime *runtime = substream->runtime;
292 	int channel = substream->pcm->device - emu->p16v_device_offset;
293 	u32 *table_base = (u32 *)(emu->p16v_buffer->area+(8*16*channel));
294 	u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
295 	int i;
296 	u32 tmp;
297 
298 #if 0 /* debug */
299 	dev_dbg(emu->card->dev,
300 		"prepare:channel_number=%d, rate=%d, "
301 		   "format=0x%x, channels=%d, buffer_size=%ld, "
302 		   "period_size=%ld, periods=%u, frames_to_bytes=%d\n",
303 		   channel, runtime->rate, runtime->format, runtime->channels,
304 		   runtime->buffer_size, runtime->period_size,
305 		   runtime->periods, frames_to_bytes(runtime, 1));
306 	dev_dbg(emu->card->dev,
307 		"dma_addr=%x, dma_area=%p, table_base=%p\n",
308 		   runtime->dma_addr, runtime->dma_area, table_base);
309 	dev_dbg(emu->card->dev,
310 		"dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",
311 		   emu->p16v_buffer->addr, emu->p16v_buffer->area,
312 		   emu->p16v_buffer->bytes);
313 #endif /* debug */
314 	tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
315         switch (runtime->rate) {
316 	case 44100:
317 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x8080);
318 	  break;
319 	case 96000:
320 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x4040);
321 	  break;
322 	case 192000:
323 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x2020);
324 	  break;
325 	case 48000:
326 	default:
327 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x0000);
328 	  break;
329 	}
330 	/* FIXME: Check emu->buffer.size before actually writing to it. */
331 	for(i = 0; i < runtime->periods; i++) {
332 		table_base[i*2]=runtime->dma_addr+(i*period_size_bytes);
333 		table_base[(i*2)+1]=period_size_bytes<<16;
334 	}
335 
336 	snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_ADDR, channel, emu->p16v_buffer->addr+(8*16*channel));
337 	snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19);
338 	snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_PTR, channel, 0);
339 	snd_emu10k1_ptr20_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr);
340 	//snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes
341 	snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, 0); // buffer size in bytes
342 	snd_emu10k1_ptr20_write(emu, PLAYBACK_POINTER, channel, 0);
343 	snd_emu10k1_ptr20_write(emu, 0x07, channel, 0x0);
344 	snd_emu10k1_ptr20_write(emu, 0x08, channel, 0);
345 
346 	return 0;
347 }
348 
349 /* prepare capture callback */
snd_p16v_pcm_prepare_capture(struct snd_pcm_substream * substream)350 static int snd_p16v_pcm_prepare_capture(struct snd_pcm_substream *substream)
351 {
352 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
353 	struct snd_pcm_runtime *runtime = substream->runtime;
354 	int channel = substream->pcm->device - emu->p16v_device_offset;
355 	u32 tmp;
356 
357 	/*
358 	dev_dbg(emu->card->dev, "prepare capture:channel_number=%d, rate=%d, "
359 	       "format=0x%x, channels=%d, buffer_size=%ld, period_size=%ld, "
360 	       "frames_to_bytes=%d\n",
361 	       channel, runtime->rate, runtime->format, runtime->channels,
362 	       runtime->buffer_size, runtime->period_size,
363 	       frames_to_bytes(runtime, 1));
364 	*/
365 	tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
366         switch (runtime->rate) {
367 	case 44100:
368 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0800);
369 	  break;
370 	case 96000:
371 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0400);
372 	  break;
373 	case 192000:
374 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0200);
375 	  break;
376 	case 48000:
377 	default:
378 	  snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0000);
379 	  break;
380 	}
381 	/* FIXME: Check emu->buffer.size before actually writing to it. */
382 	snd_emu10k1_ptr20_write(emu, 0x13, channel, 0);
383 	snd_emu10k1_ptr20_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);
384 	snd_emu10k1_ptr20_write(emu, CAPTURE_BUFFER_SIZE, channel, frames_to_bytes(runtime, runtime->buffer_size) << 16); // buffer size in bytes
385 	snd_emu10k1_ptr20_write(emu, CAPTURE_POINTER, channel, 0);
386 	//snd_emu10k1_ptr20_write(emu, CAPTURE_SOURCE, 0x0, 0x333300e4); /* Select MIC or Line in */
387 	//snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) | (0x110000<<channel));
388 
389 	return 0;
390 }
391 
snd_p16v_intr_enable(struct snd_emu10k1 * emu,unsigned int intrenb)392 static void snd_p16v_intr_enable(struct snd_emu10k1 *emu, unsigned int intrenb)
393 {
394 	unsigned long flags;
395 	unsigned int enable;
396 
397 	spin_lock_irqsave(&emu->emu_lock, flags);
398 	enable = inl(emu->port + INTE2) | intrenb;
399 	outl(enable, emu->port + INTE2);
400 	spin_unlock_irqrestore(&emu->emu_lock, flags);
401 }
402 
snd_p16v_intr_disable(struct snd_emu10k1 * emu,unsigned int intrenb)403 static void snd_p16v_intr_disable(struct snd_emu10k1 *emu, unsigned int intrenb)
404 {
405 	unsigned long flags;
406 	unsigned int disable;
407 
408 	spin_lock_irqsave(&emu->emu_lock, flags);
409 	disable = inl(emu->port + INTE2) & (~intrenb);
410 	outl(disable, emu->port + INTE2);
411 	spin_unlock_irqrestore(&emu->emu_lock, flags);
412 }
413 
414 /* trigger_playback callback */
snd_p16v_pcm_trigger_playback(struct snd_pcm_substream * substream,int cmd)415 static int snd_p16v_pcm_trigger_playback(struct snd_pcm_substream *substream,
416 				    int cmd)
417 {
418 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
419 	struct snd_pcm_runtime *runtime;
420 	struct snd_emu10k1_pcm *epcm;
421 	int channel;
422 	int result = 0;
423         struct snd_pcm_substream *s;
424 	u32 basic = 0;
425 	u32 inte = 0;
426 	int running = 0;
427 
428 	switch (cmd) {
429 	case SNDRV_PCM_TRIGGER_START:
430 		running=1;
431 		break;
432 	case SNDRV_PCM_TRIGGER_STOP:
433 	default:
434 		running = 0;
435 		break;
436 	}
437         snd_pcm_group_for_each_entry(s, substream) {
438 		if (snd_pcm_substream_chip(s) != emu ||
439 		    s->stream != SNDRV_PCM_STREAM_PLAYBACK)
440 			continue;
441 		runtime = s->runtime;
442 		epcm = runtime->private_data;
443 		channel = substream->pcm->device-emu->p16v_device_offset;
444 		/* dev_dbg(emu->card->dev, "p16v channel=%d\n", channel); */
445 		epcm->running = running;
446 		basic |= (0x1<<channel);
447 		inte |= (INTE2_PLAYBACK_CH_0_LOOP<<channel);
448                 snd_pcm_trigger_done(s, substream);
449         }
450 	/* dev_dbg(emu->card->dev, "basic=0x%x, inte=0x%x\n", basic, inte); */
451 
452 	switch (cmd) {
453 	case SNDRV_PCM_TRIGGER_START:
454 		snd_p16v_intr_enable(emu, inte);
455 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)| (basic));
456 		break;
457 	case SNDRV_PCM_TRIGGER_STOP:
458 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(basic));
459 		snd_p16v_intr_disable(emu, inte);
460 		break;
461 	default:
462 		result = -EINVAL;
463 		break;
464 	}
465 	return result;
466 }
467 
468 /* trigger_capture callback */
snd_p16v_pcm_trigger_capture(struct snd_pcm_substream * substream,int cmd)469 static int snd_p16v_pcm_trigger_capture(struct snd_pcm_substream *substream,
470                                    int cmd)
471 {
472 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
473 	struct snd_pcm_runtime *runtime = substream->runtime;
474 	struct snd_emu10k1_pcm *epcm = runtime->private_data;
475 	int channel = 0;
476 	int result = 0;
477 	u32 inte = INTE2_CAPTURE_CH_0_LOOP | INTE2_CAPTURE_CH_0_HALF_LOOP;
478 
479 	switch (cmd) {
480 	case SNDRV_PCM_TRIGGER_START:
481 		snd_p16v_intr_enable(emu, inte);
482 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)|(0x100<<channel));
483 		epcm->running = 1;
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) & ~(0x100<<channel));
487 		snd_p16v_intr_disable(emu, inte);
488 		//snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) & ~(0x110000<<channel));
489 		epcm->running = 0;
490 		break;
491 	default:
492 		result = -EINVAL;
493 		break;
494 	}
495 	return result;
496 }
497 
498 /* pointer_playback callback */
499 static snd_pcm_uframes_t
snd_p16v_pcm_pointer_playback(struct snd_pcm_substream * substream)500 snd_p16v_pcm_pointer_playback(struct snd_pcm_substream *substream)
501 {
502 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
503 	struct snd_pcm_runtime *runtime = substream->runtime;
504 	struct snd_emu10k1_pcm *epcm = runtime->private_data;
505 	snd_pcm_uframes_t ptr, ptr1, ptr2,ptr3,ptr4 = 0;
506 	int channel = substream->pcm->device - emu->p16v_device_offset;
507 	if (!epcm->running)
508 		return 0;
509 
510 	ptr3 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
511 	ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
512 	ptr4 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
513 	if (ptr3 != ptr4) ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
514 	ptr2 = bytes_to_frames(runtime, ptr1);
515 	ptr2+= (ptr4 >> 3) * runtime->period_size;
516 	ptr=ptr2;
517         if (ptr >= runtime->buffer_size)
518 		ptr -= runtime->buffer_size;
519 
520 	return ptr;
521 }
522 
523 /* pointer_capture callback */
524 static snd_pcm_uframes_t
snd_p16v_pcm_pointer_capture(struct snd_pcm_substream * substream)525 snd_p16v_pcm_pointer_capture(struct snd_pcm_substream *substream)
526 {
527 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
528 	struct snd_pcm_runtime *runtime = substream->runtime;
529 	struct snd_emu10k1_pcm *epcm = runtime->private_data;
530 	snd_pcm_uframes_t ptr, ptr1, ptr2 = 0;
531 	int channel = 0;
532 
533 	if (!epcm->running)
534 		return 0;
535 
536 	ptr1 = snd_emu10k1_ptr20_read(emu, CAPTURE_POINTER, channel);
537 	ptr2 = bytes_to_frames(runtime, ptr1);
538 	ptr=ptr2;
539 	if (ptr >= runtime->buffer_size) {
540 		ptr -= runtime->buffer_size;
541 		dev_warn(emu->card->dev, "buffer capture limited!\n");
542 	}
543 	/*
544 	dev_dbg(emu->card->dev, "ptr1 = 0x%lx, ptr2=0x%lx, ptr=0x%lx, "
545 	       "buffer_size = 0x%x, period_size = 0x%x, bits=%d, rate=%d\n",
546 	       ptr1, ptr2, ptr, (int)runtime->buffer_size,
547 	       (int)runtime->period_size, (int)runtime->frame_bits,
548 	       (int)runtime->rate);
549 	*/
550 	return ptr;
551 }
552 
553 /* operators */
554 static const struct snd_pcm_ops snd_p16v_playback_front_ops = {
555 	.open =        snd_p16v_pcm_open_playback_front,
556 	.close =       snd_p16v_pcm_close_playback,
557 	.prepare =     snd_p16v_pcm_prepare_playback,
558 	.trigger =     snd_p16v_pcm_trigger_playback,
559 	.pointer =     snd_p16v_pcm_pointer_playback,
560 };
561 
562 static const struct snd_pcm_ops snd_p16v_capture_ops = {
563 	.open =        snd_p16v_pcm_open_capture,
564 	.close =       snd_p16v_pcm_close_capture,
565 	.prepare =     snd_p16v_pcm_prepare_capture,
566 	.trigger =     snd_p16v_pcm_trigger_capture,
567 	.pointer =     snd_p16v_pcm_pointer_capture,
568 };
569 
snd_p16v_pcm(struct snd_emu10k1 * emu,int device)570 int snd_p16v_pcm(struct snd_emu10k1 *emu, int device)
571 {
572 	struct snd_pcm *pcm;
573 	struct snd_pcm_substream *substream;
574 	int err;
575         int capture=1;
576 
577 	/* dev_dbg(emu->card->dev, "snd_p16v_pcm called. device=%d\n", device); */
578 	emu->p16v_device_offset = device;
579 
580 	err = snd_pcm_new(emu->card, "p16v", device, 1, capture, &pcm);
581 	if (err < 0)
582 		return err;
583 
584 	pcm->private_data = emu;
585 	// Single playback 8 channel device.
586 	// Single capture 2 channel device.
587 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_p16v_playback_front_ops);
588 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_p16v_capture_ops);
589 
590 	pcm->info_flags = 0;
591 	pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
592 	strcpy(pcm->name, "p16v");
593 	emu->pcm_p16v = pcm;
594 
595 	for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
596 	    substream;
597 	    substream = substream->next) {
598 		snd_pcm_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV,
599 					   &emu->pci->dev,
600 					   (65536 - 64) * 8,
601 					   (65536 - 64) * 8);
602 		/*
603 		dev_dbg(emu->card->dev,
604 			   "preallocate playback substream: err=%d\n", err);
605 		*/
606 	}
607 
608 	for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
609 	      substream;
610 	      substream = substream->next) {
611 		snd_pcm_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV,
612 					   &emu->pci->dev,
613 					   65536 - 64, 65536 - 64);
614 		/*
615 		dev_dbg(emu->card->dev,
616 			   "preallocate capture substream: err=%d\n", err);
617 		*/
618 	}
619 
620 	return 0;
621 }
622 
snd_p16v_volume_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)623 static int snd_p16v_volume_info(struct snd_kcontrol *kcontrol,
624 				struct snd_ctl_elem_info *uinfo)
625 {
626         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
627         uinfo->count = 2;
628         uinfo->value.integer.min = 0;
629         uinfo->value.integer.max = 255;
630         return 0;
631 }
632 
snd_p16v_volume_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)633 static int snd_p16v_volume_get(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;
640 
641 	value = snd_emu10k1_ptr20_read(emu, reg, high_low);
642 	if (high_low) {
643 		ucontrol->value.integer.value[0] = 0xff - ((value >> 24) & 0xff); /* Left */
644 		ucontrol->value.integer.value[1] = 0xff - ((value >> 16) & 0xff); /* Right */
645 	} else {
646 		ucontrol->value.integer.value[0] = 0xff - ((value >> 8) & 0xff); /* Left */
647 		ucontrol->value.integer.value[1] = 0xff - ((value >> 0) & 0xff); /* Right */
648 	}
649 	return 0;
650 }
651 
snd_p16v_volume_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)652 static int snd_p16v_volume_put(struct snd_kcontrol *kcontrol,
653 			       struct snd_ctl_elem_value *ucontrol)
654 {
655         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
656 	int high_low = (kcontrol->private_value >> 8) & 0xff;
657 	int reg = kcontrol->private_value & 0xff;
658         u32 value, oval;
659 
660 	oval = value = snd_emu10k1_ptr20_read(emu, reg, 0);
661 	if (high_low == 1) {
662 		value &= 0xffff;
663 		value |= ((0xff - ucontrol->value.integer.value[0]) << 24) |
664 			((0xff - ucontrol->value.integer.value[1]) << 16);
665 	} else {
666 		value &= 0xffff0000;
667 		value |= ((0xff - ucontrol->value.integer.value[0]) << 8) |
668 			((0xff - ucontrol->value.integer.value[1]) );
669 	}
670 	if (value != oval) {
671 		snd_emu10k1_ptr20_write(emu, reg, 0, value);
672 		return 1;
673 	}
674 	return 0;
675 }
676 
snd_p16v_capture_source_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)677 static int snd_p16v_capture_source_info(struct snd_kcontrol *kcontrol,
678 					struct snd_ctl_elem_info *uinfo)
679 {
680 	static const char * const texts[8] = {
681 		"SPDIF", "I2S", "SRC48", "SRCMulti_SPDIF", "SRCMulti_I2S",
682 		"CDIF", "FX", "AC97"
683 	};
684 
685 	return snd_ctl_enum_info(uinfo, 1, 8, texts);
686 }
687 
snd_p16v_capture_source_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)688 static int snd_p16v_capture_source_get(struct snd_kcontrol *kcontrol,
689 					struct snd_ctl_elem_value *ucontrol)
690 {
691 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
692 
693 	ucontrol->value.enumerated.item[0] = emu->p16v_capture_source;
694 	return 0;
695 }
696 
snd_p16v_capture_source_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)697 static int snd_p16v_capture_source_put(struct snd_kcontrol *kcontrol,
698 					struct snd_ctl_elem_value *ucontrol)
699 {
700 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
701 	unsigned int val;
702 	int change = 0;
703 	u32 mask;
704 	u32 source;
705 
706 	val = ucontrol->value.enumerated.item[0] ;
707 	if (val > 7)
708 		return -EINVAL;
709 	change = (emu->p16v_capture_source != val);
710 	if (change) {
711 		emu->p16v_capture_source = val;
712 		source = (val << 28) | (val << 24) | (val << 20) | (val << 16);
713 		mask = snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & 0xffff;
714 		snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, source | mask);
715 	}
716         return change;
717 }
718 
snd_p16v_capture_channel_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)719 static int snd_p16v_capture_channel_info(struct snd_kcontrol *kcontrol,
720 					 struct snd_ctl_elem_info *uinfo)
721 {
722 	static const char * const texts[4] = { "0", "1", "2", "3", };
723 
724 	return snd_ctl_enum_info(uinfo, 1, 4, texts);
725 }
726 
snd_p16v_capture_channel_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)727 static int snd_p16v_capture_channel_get(struct snd_kcontrol *kcontrol,
728 					struct snd_ctl_elem_value *ucontrol)
729 {
730 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
731 
732 	ucontrol->value.enumerated.item[0] = emu->p16v_capture_channel;
733 	return 0;
734 }
735 
snd_p16v_capture_channel_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)736 static int snd_p16v_capture_channel_put(struct snd_kcontrol *kcontrol,
737 					struct snd_ctl_elem_value *ucontrol)
738 {
739 	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
740 	unsigned int val;
741 	int change = 0;
742 	u32 tmp;
743 
744 	val = ucontrol->value.enumerated.item[0] ;
745 	if (val > 3)
746 		return -EINVAL;
747 	change = (emu->p16v_capture_channel != val);
748 	if (change) {
749 		emu->p16v_capture_channel = val;
750 		tmp = snd_emu10k1_ptr20_read(emu, CAPTURE_P16V_SOURCE, 0) & 0xfffc;
751 		snd_emu10k1_ptr20_write(emu, CAPTURE_P16V_SOURCE, 0, tmp | val);
752 	}
753         return change;
754 }
755 static const DECLARE_TLV_DB_SCALE(snd_p16v_db_scale1, -5175, 25, 1);
756 
757 #define P16V_VOL(xname,xreg,xhl) { \
758 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
759         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |             \
760                   SNDRV_CTL_ELEM_ACCESS_TLV_READ,               \
761 	.info = snd_p16v_volume_info, \
762 	.get = snd_p16v_volume_get, \
763 	.put = snd_p16v_volume_put, \
764 	.tlv = { .p = snd_p16v_db_scale1 },	\
765 	.private_value = ((xreg) | ((xhl) << 8)) \
766 }
767 
768 static const struct snd_kcontrol_new p16v_mixer_controls[] = {
769 	P16V_VOL("HD Analog Front Playback Volume", PLAYBACK_VOLUME_MIXER9, 0),
770 	P16V_VOL("HD Analog Rear Playback Volume", PLAYBACK_VOLUME_MIXER10, 1),
771 	P16V_VOL("HD Analog Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER9, 1),
772 	P16V_VOL("HD Analog Side Playback Volume", PLAYBACK_VOLUME_MIXER10, 0),
773 	P16V_VOL("HD SPDIF Front Playback Volume", PLAYBACK_VOLUME_MIXER7, 0),
774 	P16V_VOL("HD SPDIF Rear Playback Volume", PLAYBACK_VOLUME_MIXER8, 1),
775 	P16V_VOL("HD SPDIF Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER7, 1),
776 	P16V_VOL("HD SPDIF Side Playback Volume", PLAYBACK_VOLUME_MIXER8, 0),
777 	{
778 		.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
779 		.name =		"HD source Capture",
780 		.info =		snd_p16v_capture_source_info,
781 		.get =		snd_p16v_capture_source_get,
782 		.put =		snd_p16v_capture_source_put
783 	},
784 	{
785 		.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
786 		.name =		"HD channel Capture",
787 		.info =		snd_p16v_capture_channel_info,
788 		.get =		snd_p16v_capture_channel_get,
789 		.put =		snd_p16v_capture_channel_put
790 	},
791 };
792 
793 
snd_p16v_mixer(struct snd_emu10k1 * emu)794 int snd_p16v_mixer(struct snd_emu10k1 *emu)
795 {
796 	int i, err;
797         struct snd_card *card = emu->card;
798 
799 	for (i = 0; i < ARRAY_SIZE(p16v_mixer_controls); i++) {
800 		err = snd_ctl_add(card, snd_ctl_new1(&p16v_mixer_controls[i], emu));
801 		if (err < 0)
802 			return err;
803 	}
804         return 0;
805 }
806 
807 #ifdef CONFIG_PM_SLEEP
808 
809 #define NUM_CHS	1	/* up to 4, but only first channel is used */
810 
snd_p16v_alloc_pm_buffer(struct snd_emu10k1 * emu)811 int snd_p16v_alloc_pm_buffer(struct snd_emu10k1 *emu)
812 {
813 	emu->p16v_saved = vmalloc(array_size(NUM_CHS * 4, 0x80));
814 	if (! emu->p16v_saved)
815 		return -ENOMEM;
816 	return 0;
817 }
818 
snd_p16v_free_pm_buffer(struct snd_emu10k1 * emu)819 void snd_p16v_free_pm_buffer(struct snd_emu10k1 *emu)
820 {
821 	vfree(emu->p16v_saved);
822 }
823 
snd_p16v_suspend(struct snd_emu10k1 * emu)824 void snd_p16v_suspend(struct snd_emu10k1 *emu)
825 {
826 	int i, ch;
827 	unsigned int *val;
828 
829 	val = emu->p16v_saved;
830 	for (ch = 0; ch < NUM_CHS; ch++)
831 		for (i = 0; i < 0x80; i++, val++)
832 			*val = snd_emu10k1_ptr20_read(emu, i, ch);
833 }
834 
snd_p16v_resume(struct snd_emu10k1 * emu)835 void snd_p16v_resume(struct snd_emu10k1 *emu)
836 {
837 	int i, ch;
838 	unsigned int *val;
839 
840 	val = emu->p16v_saved;
841 	for (ch = 0; ch < NUM_CHS; ch++)
842 		for (i = 0; i < 0x80; i++, val++)
843 			snd_emu10k1_ptr20_write(emu, i, ch, *val);
844 }
845 #endif
846