xref: /openbmc/linux/sound/isa/ad1816a/ad1816a_lib.c (revision b4e18b29)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3     ad1816a.c - lowlevel code for Analog Devices AD1816A chip.
4     Copyright (C) 1999-2000 by Massimo Piccioni <dafastidio@libero.it>
5 
6 */
7 
8 #include <linux/delay.h>
9 #include <linux/init.h>
10 #include <linux/interrupt.h>
11 #include <linux/slab.h>
12 #include <linux/ioport.h>
13 #include <linux/io.h>
14 #include <sound/core.h>
15 #include <sound/tlv.h>
16 #include <sound/ad1816a.h>
17 
18 #include <asm/dma.h>
19 
20 static inline int snd_ad1816a_busy_wait(struct snd_ad1816a *chip)
21 {
22 	int timeout;
23 
24 	for (timeout = 1000; timeout-- > 0; udelay(10))
25 		if (inb(AD1816A_REG(AD1816A_CHIP_STATUS)) & AD1816A_READY)
26 			return 0;
27 
28 	snd_printk(KERN_WARNING "chip busy.\n");
29 	return -EBUSY;
30 }
31 
32 static inline unsigned char snd_ad1816a_in(struct snd_ad1816a *chip, unsigned char reg)
33 {
34 	snd_ad1816a_busy_wait(chip);
35 	return inb(AD1816A_REG(reg));
36 }
37 
38 static inline void snd_ad1816a_out(struct snd_ad1816a *chip, unsigned char reg,
39 			    unsigned char value)
40 {
41 	snd_ad1816a_busy_wait(chip);
42 	outb(value, AD1816A_REG(reg));
43 }
44 
45 static inline void snd_ad1816a_out_mask(struct snd_ad1816a *chip, unsigned char reg,
46 				 unsigned char mask, unsigned char value)
47 {
48 	snd_ad1816a_out(chip, reg,
49 		(value & mask) | (snd_ad1816a_in(chip, reg) & ~mask));
50 }
51 
52 static unsigned short snd_ad1816a_read(struct snd_ad1816a *chip, unsigned char reg)
53 {
54 	snd_ad1816a_out(chip, AD1816A_INDIR_ADDR, reg & 0x3f);
55 	return snd_ad1816a_in(chip, AD1816A_INDIR_DATA_LOW) |
56 		(snd_ad1816a_in(chip, AD1816A_INDIR_DATA_HIGH) << 8);
57 }
58 
59 static void snd_ad1816a_write(struct snd_ad1816a *chip, unsigned char reg,
60 			      unsigned short value)
61 {
62 	snd_ad1816a_out(chip, AD1816A_INDIR_ADDR, reg & 0x3f);
63 	snd_ad1816a_out(chip, AD1816A_INDIR_DATA_LOW, value & 0xff);
64 	snd_ad1816a_out(chip, AD1816A_INDIR_DATA_HIGH, (value >> 8) & 0xff);
65 }
66 
67 static void snd_ad1816a_write_mask(struct snd_ad1816a *chip, unsigned char reg,
68 				   unsigned short mask, unsigned short value)
69 {
70 	snd_ad1816a_write(chip, reg,
71 		(value & mask) | (snd_ad1816a_read(chip, reg) & ~mask));
72 }
73 
74 
75 static unsigned char snd_ad1816a_get_format(struct snd_ad1816a *chip,
76 					    snd_pcm_format_t format,
77 					    int channels)
78 {
79 	unsigned char retval = AD1816A_FMT_LINEAR_8;
80 
81 	switch (format) {
82 	case SNDRV_PCM_FORMAT_MU_LAW:
83 		retval = AD1816A_FMT_ULAW_8;
84 		break;
85 	case SNDRV_PCM_FORMAT_A_LAW:
86 		retval = AD1816A_FMT_ALAW_8;
87 		break;
88 	case SNDRV_PCM_FORMAT_S16_LE:
89 		retval = AD1816A_FMT_LINEAR_16_LIT;
90 		break;
91 	case SNDRV_PCM_FORMAT_S16_BE:
92 		retval = AD1816A_FMT_LINEAR_16_BIG;
93 	}
94 	return (channels > 1) ? (retval | AD1816A_FMT_STEREO) : retval;
95 }
96 
97 static int snd_ad1816a_open(struct snd_ad1816a *chip, unsigned int mode)
98 {
99 	unsigned long flags;
100 
101 	spin_lock_irqsave(&chip->lock, flags);
102 
103 	if (chip->mode & mode) {
104 		spin_unlock_irqrestore(&chip->lock, flags);
105 		return -EAGAIN;
106 	}
107 
108 	switch ((mode &= AD1816A_MODE_OPEN)) {
109 	case AD1816A_MODE_PLAYBACK:
110 		snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
111 			AD1816A_PLAYBACK_IRQ_PENDING, 0x00);
112 		snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
113 			AD1816A_PLAYBACK_IRQ_ENABLE, 0xffff);
114 		break;
115 	case AD1816A_MODE_CAPTURE:
116 		snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
117 			AD1816A_CAPTURE_IRQ_PENDING, 0x00);
118 		snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
119 			AD1816A_CAPTURE_IRQ_ENABLE, 0xffff);
120 		break;
121 	case AD1816A_MODE_TIMER:
122 		snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
123 			AD1816A_TIMER_IRQ_PENDING, 0x00);
124 		snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
125 			AD1816A_TIMER_IRQ_ENABLE, 0xffff);
126 	}
127 	chip->mode |= mode;
128 
129 	spin_unlock_irqrestore(&chip->lock, flags);
130 	return 0;
131 }
132 
133 static void snd_ad1816a_close(struct snd_ad1816a *chip, unsigned int mode)
134 {
135 	unsigned long flags;
136 
137 	spin_lock_irqsave(&chip->lock, flags);
138 
139 	switch ((mode &= AD1816A_MODE_OPEN)) {
140 	case AD1816A_MODE_PLAYBACK:
141 		snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
142 			AD1816A_PLAYBACK_IRQ_PENDING, 0x00);
143 		snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
144 			AD1816A_PLAYBACK_IRQ_ENABLE, 0x0000);
145 		break;
146 	case AD1816A_MODE_CAPTURE:
147 		snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
148 			AD1816A_CAPTURE_IRQ_PENDING, 0x00);
149 		snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
150 			AD1816A_CAPTURE_IRQ_ENABLE, 0x0000);
151 		break;
152 	case AD1816A_MODE_TIMER:
153 		snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
154 			AD1816A_TIMER_IRQ_PENDING, 0x00);
155 		snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
156 			AD1816A_TIMER_IRQ_ENABLE, 0x0000);
157 	}
158 	if (!((chip->mode &= ~mode) & AD1816A_MODE_OPEN))
159 		chip->mode = 0;
160 
161 	spin_unlock_irqrestore(&chip->lock, flags);
162 }
163 
164 
165 static int snd_ad1816a_trigger(struct snd_ad1816a *chip, unsigned char what,
166 			       int channel, int cmd, int iscapture)
167 {
168 	int error = 0;
169 
170 	switch (cmd) {
171 	case SNDRV_PCM_TRIGGER_START:
172 	case SNDRV_PCM_TRIGGER_STOP:
173 		spin_lock(&chip->lock);
174 		cmd = (cmd == SNDRV_PCM_TRIGGER_START) ? 0xff: 0x00;
175 		/* if (what & AD1816A_PLAYBACK_ENABLE) */
176 		/* That is not valid, because playback and capture enable
177 		 * are the same bit pattern, just to different addresses
178 		 */
179 		if (! iscapture)
180 			snd_ad1816a_out_mask(chip, AD1816A_PLAYBACK_CONFIG,
181 				AD1816A_PLAYBACK_ENABLE, cmd);
182 		else
183 			snd_ad1816a_out_mask(chip, AD1816A_CAPTURE_CONFIG,
184 				AD1816A_CAPTURE_ENABLE, cmd);
185 		spin_unlock(&chip->lock);
186 		break;
187 	default:
188 		snd_printk(KERN_WARNING "invalid trigger mode 0x%x.\n", what);
189 		error = -EINVAL;
190 	}
191 
192 	return error;
193 }
194 
195 static int snd_ad1816a_playback_trigger(struct snd_pcm_substream *substream, int cmd)
196 {
197 	struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
198 	return snd_ad1816a_trigger(chip, AD1816A_PLAYBACK_ENABLE,
199 				   SNDRV_PCM_STREAM_PLAYBACK, cmd, 0);
200 }
201 
202 static int snd_ad1816a_capture_trigger(struct snd_pcm_substream *substream, int cmd)
203 {
204 	struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
205 	return snd_ad1816a_trigger(chip, AD1816A_CAPTURE_ENABLE,
206 				   SNDRV_PCM_STREAM_CAPTURE, cmd, 1);
207 }
208 
209 static int snd_ad1816a_playback_prepare(struct snd_pcm_substream *substream)
210 {
211 	struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
212 	unsigned long flags;
213 	struct snd_pcm_runtime *runtime = substream->runtime;
214 	unsigned int size, rate;
215 
216 	spin_lock_irqsave(&chip->lock, flags);
217 
218 	chip->p_dma_size = size = snd_pcm_lib_buffer_bytes(substream);
219 	snd_ad1816a_out_mask(chip, AD1816A_PLAYBACK_CONFIG,
220 		AD1816A_PLAYBACK_ENABLE | AD1816A_PLAYBACK_PIO, 0x00);
221 
222 	snd_dma_program(chip->dma1, runtime->dma_addr, size,
223 			DMA_MODE_WRITE | DMA_AUTOINIT);
224 
225 	rate = runtime->rate;
226 	if (chip->clock_freq)
227 		rate = (rate * 33000) / chip->clock_freq;
228 	snd_ad1816a_write(chip, AD1816A_PLAYBACK_SAMPLE_RATE, rate);
229 	snd_ad1816a_out_mask(chip, AD1816A_PLAYBACK_CONFIG,
230 		AD1816A_FMT_ALL | AD1816A_FMT_STEREO,
231 		snd_ad1816a_get_format(chip, runtime->format,
232 			runtime->channels));
233 
234 	snd_ad1816a_write(chip, AD1816A_PLAYBACK_BASE_COUNT,
235 		snd_pcm_lib_period_bytes(substream) / 4 - 1);
236 
237 	spin_unlock_irqrestore(&chip->lock, flags);
238 	return 0;
239 }
240 
241 static int snd_ad1816a_capture_prepare(struct snd_pcm_substream *substream)
242 {
243 	struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
244 	unsigned long flags;
245 	struct snd_pcm_runtime *runtime = substream->runtime;
246 	unsigned int size, rate;
247 
248 	spin_lock_irqsave(&chip->lock, flags);
249 
250 	chip->c_dma_size = size = snd_pcm_lib_buffer_bytes(substream);
251 	snd_ad1816a_out_mask(chip, AD1816A_CAPTURE_CONFIG,
252 		AD1816A_CAPTURE_ENABLE | AD1816A_CAPTURE_PIO, 0x00);
253 
254 	snd_dma_program(chip->dma2, runtime->dma_addr, size,
255 			DMA_MODE_READ | DMA_AUTOINIT);
256 
257 	rate = runtime->rate;
258 	if (chip->clock_freq)
259 		rate = (rate * 33000) / chip->clock_freq;
260 	snd_ad1816a_write(chip, AD1816A_CAPTURE_SAMPLE_RATE, rate);
261 	snd_ad1816a_out_mask(chip, AD1816A_CAPTURE_CONFIG,
262 		AD1816A_FMT_ALL | AD1816A_FMT_STEREO,
263 		snd_ad1816a_get_format(chip, runtime->format,
264 			runtime->channels));
265 
266 	snd_ad1816a_write(chip, AD1816A_CAPTURE_BASE_COUNT,
267 		snd_pcm_lib_period_bytes(substream) / 4 - 1);
268 
269 	spin_unlock_irqrestore(&chip->lock, flags);
270 	return 0;
271 }
272 
273 
274 static snd_pcm_uframes_t snd_ad1816a_playback_pointer(struct snd_pcm_substream *substream)
275 {
276 	struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
277 	size_t ptr;
278 	if (!(chip->mode & AD1816A_MODE_PLAYBACK))
279 		return 0;
280 	ptr = snd_dma_pointer(chip->dma1, chip->p_dma_size);
281 	return bytes_to_frames(substream->runtime, ptr);
282 }
283 
284 static snd_pcm_uframes_t snd_ad1816a_capture_pointer(struct snd_pcm_substream *substream)
285 {
286 	struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
287 	size_t ptr;
288 	if (!(chip->mode & AD1816A_MODE_CAPTURE))
289 		return 0;
290 	ptr = snd_dma_pointer(chip->dma2, chip->c_dma_size);
291 	return bytes_to_frames(substream->runtime, ptr);
292 }
293 
294 
295 static irqreturn_t snd_ad1816a_interrupt(int irq, void *dev_id)
296 {
297 	struct snd_ad1816a *chip = dev_id;
298 	unsigned char status;
299 
300 	spin_lock(&chip->lock);
301 	status = snd_ad1816a_in(chip, AD1816A_INTERRUPT_STATUS);
302 	spin_unlock(&chip->lock);
303 
304 	if ((status & AD1816A_PLAYBACK_IRQ_PENDING) && chip->playback_substream)
305 		snd_pcm_period_elapsed(chip->playback_substream);
306 
307 	if ((status & AD1816A_CAPTURE_IRQ_PENDING) && chip->capture_substream)
308 		snd_pcm_period_elapsed(chip->capture_substream);
309 
310 	if ((status & AD1816A_TIMER_IRQ_PENDING) && chip->timer)
311 		snd_timer_interrupt(chip->timer, chip->timer->sticks);
312 
313 	spin_lock(&chip->lock);
314 	snd_ad1816a_out(chip, AD1816A_INTERRUPT_STATUS, 0x00);
315 	spin_unlock(&chip->lock);
316 	return IRQ_HANDLED;
317 }
318 
319 
320 static const struct snd_pcm_hardware snd_ad1816a_playback = {
321 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
322 				 SNDRV_PCM_INFO_MMAP_VALID),
323 	.formats =		(SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
324 				 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
325 				 SNDRV_PCM_FMTBIT_S16_BE),
326 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
327 	.rate_min =		4000,
328 	.rate_max =		55200,
329 	.channels_min =		1,
330 	.channels_max =		2,
331 	.buffer_bytes_max =	(128*1024),
332 	.period_bytes_min =	64,
333 	.period_bytes_max =	(128*1024),
334 	.periods_min =		1,
335 	.periods_max =		1024,
336 	.fifo_size =		0,
337 };
338 
339 static const struct snd_pcm_hardware snd_ad1816a_capture = {
340 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
341 				 SNDRV_PCM_INFO_MMAP_VALID),
342 	.formats =		(SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
343 				 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
344 				 SNDRV_PCM_FMTBIT_S16_BE),
345 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
346 	.rate_min =		4000,
347 	.rate_max =		55200,
348 	.channels_min =		1,
349 	.channels_max =		2,
350 	.buffer_bytes_max =	(128*1024),
351 	.period_bytes_min =	64,
352 	.period_bytes_max =	(128*1024),
353 	.periods_min =		1,
354 	.periods_max =		1024,
355 	.fifo_size =		0,
356 };
357 
358 static int snd_ad1816a_timer_close(struct snd_timer *timer)
359 {
360 	struct snd_ad1816a *chip = snd_timer_chip(timer);
361 	snd_ad1816a_close(chip, AD1816A_MODE_TIMER);
362 	return 0;
363 }
364 
365 static int snd_ad1816a_timer_open(struct snd_timer *timer)
366 {
367 	struct snd_ad1816a *chip = snd_timer_chip(timer);
368 	snd_ad1816a_open(chip, AD1816A_MODE_TIMER);
369 	return 0;
370 }
371 
372 static unsigned long snd_ad1816a_timer_resolution(struct snd_timer *timer)
373 {
374 	if (snd_BUG_ON(!timer))
375 		return 0;
376 
377 	return 10000;
378 }
379 
380 static int snd_ad1816a_timer_start(struct snd_timer *timer)
381 {
382 	unsigned short bits;
383 	unsigned long flags;
384 	struct snd_ad1816a *chip = snd_timer_chip(timer);
385 	spin_lock_irqsave(&chip->lock, flags);
386 	bits = snd_ad1816a_read(chip, AD1816A_INTERRUPT_ENABLE);
387 
388 	if (!(bits & AD1816A_TIMER_ENABLE)) {
389 		snd_ad1816a_write(chip, AD1816A_TIMER_BASE_COUNT,
390 			timer->sticks & 0xffff);
391 
392 		snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
393 			AD1816A_TIMER_ENABLE, 0xffff);
394 	}
395 	spin_unlock_irqrestore(&chip->lock, flags);
396 	return 0;
397 }
398 
399 static int snd_ad1816a_timer_stop(struct snd_timer *timer)
400 {
401 	unsigned long flags;
402 	struct snd_ad1816a *chip = snd_timer_chip(timer);
403 	spin_lock_irqsave(&chip->lock, flags);
404 
405 	snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
406 		AD1816A_TIMER_ENABLE, 0x0000);
407 
408 	spin_unlock_irqrestore(&chip->lock, flags);
409 	return 0;
410 }
411 
412 static const struct snd_timer_hardware snd_ad1816a_timer_table = {
413 	.flags =	SNDRV_TIMER_HW_AUTO,
414 	.resolution =	10000,
415 	.ticks =	65535,
416 	.open =		snd_ad1816a_timer_open,
417 	.close =	snd_ad1816a_timer_close,
418 	.c_resolution =	snd_ad1816a_timer_resolution,
419 	.start =	snd_ad1816a_timer_start,
420 	.stop =		snd_ad1816a_timer_stop,
421 };
422 
423 static int snd_ad1816a_playback_open(struct snd_pcm_substream *substream)
424 {
425 	struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
426 	struct snd_pcm_runtime *runtime = substream->runtime;
427 	int error;
428 
429 	if ((error = snd_ad1816a_open(chip, AD1816A_MODE_PLAYBACK)) < 0)
430 		return error;
431 	runtime->hw = snd_ad1816a_playback;
432 	snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.buffer_bytes_max);
433 	snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.period_bytes_max);
434 	chip->playback_substream = substream;
435 	return 0;
436 }
437 
438 static int snd_ad1816a_capture_open(struct snd_pcm_substream *substream)
439 {
440 	struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
441 	struct snd_pcm_runtime *runtime = substream->runtime;
442 	int error;
443 
444 	if ((error = snd_ad1816a_open(chip, AD1816A_MODE_CAPTURE)) < 0)
445 		return error;
446 	runtime->hw = snd_ad1816a_capture;
447 	snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.buffer_bytes_max);
448 	snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.period_bytes_max);
449 	chip->capture_substream = substream;
450 	return 0;
451 }
452 
453 static int snd_ad1816a_playback_close(struct snd_pcm_substream *substream)
454 {
455 	struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
456 
457 	chip->playback_substream = NULL;
458 	snd_ad1816a_close(chip, AD1816A_MODE_PLAYBACK);
459 	return 0;
460 }
461 
462 static int snd_ad1816a_capture_close(struct snd_pcm_substream *substream)
463 {
464 	struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
465 
466 	chip->capture_substream = NULL;
467 	snd_ad1816a_close(chip, AD1816A_MODE_CAPTURE);
468 	return 0;
469 }
470 
471 
472 static void snd_ad1816a_init(struct snd_ad1816a *chip)
473 {
474 	unsigned long flags;
475 
476 	spin_lock_irqsave(&chip->lock, flags);
477 
478 	snd_ad1816a_out(chip, AD1816A_INTERRUPT_STATUS, 0x00);
479 	snd_ad1816a_out_mask(chip, AD1816A_PLAYBACK_CONFIG,
480 		AD1816A_PLAYBACK_ENABLE | AD1816A_PLAYBACK_PIO, 0x00);
481 	snd_ad1816a_out_mask(chip, AD1816A_CAPTURE_CONFIG,
482 		AD1816A_CAPTURE_ENABLE | AD1816A_CAPTURE_PIO, 0x00);
483 	snd_ad1816a_write(chip, AD1816A_INTERRUPT_ENABLE, 0x0000);
484 	snd_ad1816a_write_mask(chip, AD1816A_CHIP_CONFIG,
485 		AD1816A_CAPTURE_NOT_EQUAL | AD1816A_WSS_ENABLE, 0xffff);
486 	snd_ad1816a_write(chip, AD1816A_DSP_CONFIG, 0x0000);
487 	snd_ad1816a_write(chip, AD1816A_POWERDOWN_CTRL, 0x0000);
488 
489 	spin_unlock_irqrestore(&chip->lock, flags);
490 }
491 
492 #ifdef CONFIG_PM
493 void snd_ad1816a_suspend(struct snd_ad1816a *chip)
494 {
495 	int reg;
496 	unsigned long flags;
497 
498 	spin_lock_irqsave(&chip->lock, flags);
499 	for (reg = 0; reg < 48; reg++)
500 		chip->image[reg] = snd_ad1816a_read(chip, reg);
501 	spin_unlock_irqrestore(&chip->lock, flags);
502 }
503 
504 void snd_ad1816a_resume(struct snd_ad1816a *chip)
505 {
506 	int reg;
507 	unsigned long flags;
508 
509 	snd_ad1816a_init(chip);
510 	spin_lock_irqsave(&chip->lock, flags);
511 	for (reg = 0; reg < 48; reg++)
512 		snd_ad1816a_write(chip, reg, chip->image[reg]);
513 	spin_unlock_irqrestore(&chip->lock, flags);
514 }
515 #endif
516 
517 static int snd_ad1816a_probe(struct snd_ad1816a *chip)
518 {
519 	unsigned long flags;
520 
521 	spin_lock_irqsave(&chip->lock, flags);
522 
523 	switch (chip->version = snd_ad1816a_read(chip, AD1816A_VERSION_ID)) {
524 	case 0:
525 		chip->hardware = AD1816A_HW_AD1815;
526 		break;
527 	case 1:
528 		chip->hardware = AD1816A_HW_AD18MAX10;
529 		break;
530 	case 3:
531 		chip->hardware = AD1816A_HW_AD1816A;
532 		break;
533 	default:
534 		chip->hardware = AD1816A_HW_AUTO;
535 	}
536 
537 	spin_unlock_irqrestore(&chip->lock, flags);
538 	return 0;
539 }
540 
541 static int snd_ad1816a_free(struct snd_ad1816a *chip)
542 {
543 	release_and_free_resource(chip->res_port);
544 	if (chip->irq >= 0)
545 		free_irq(chip->irq, (void *) chip);
546 	if (chip->dma1 >= 0) {
547 		snd_dma_disable(chip->dma1);
548 		free_dma(chip->dma1);
549 	}
550 	if (chip->dma2 >= 0) {
551 		snd_dma_disable(chip->dma2);
552 		free_dma(chip->dma2);
553 	}
554 	return 0;
555 }
556 
557 static int snd_ad1816a_dev_free(struct snd_device *device)
558 {
559 	struct snd_ad1816a *chip = device->device_data;
560 	return snd_ad1816a_free(chip);
561 }
562 
563 static const char *snd_ad1816a_chip_id(struct snd_ad1816a *chip)
564 {
565 	switch (chip->hardware) {
566 	case AD1816A_HW_AD1816A: return "AD1816A";
567 	case AD1816A_HW_AD1815:	return "AD1815";
568 	case AD1816A_HW_AD18MAX10: return "AD18max10";
569 	default:
570 		snd_printk(KERN_WARNING "Unknown chip version %d:%d.\n",
571 			chip->version, chip->hardware);
572 		return "AD1816A - unknown";
573 	}
574 }
575 
576 int snd_ad1816a_create(struct snd_card *card,
577 		       unsigned long port, int irq, int dma1, int dma2,
578 		       struct snd_ad1816a *chip)
579 {
580 	static const struct snd_device_ops ops = {
581 		.dev_free =	snd_ad1816a_dev_free,
582 	};
583 	int error;
584 
585 	chip->irq = -1;
586 	chip->dma1 = -1;
587 	chip->dma2 = -1;
588 
589 	if ((chip->res_port = request_region(port, 16, "AD1816A")) == NULL) {
590 		snd_printk(KERN_ERR "ad1816a: can't grab port 0x%lx\n", port);
591 		snd_ad1816a_free(chip);
592 		return -EBUSY;
593 	}
594 	if (request_irq(irq, snd_ad1816a_interrupt, 0, "AD1816A", (void *) chip)) {
595 		snd_printk(KERN_ERR "ad1816a: can't grab IRQ %d\n", irq);
596 		snd_ad1816a_free(chip);
597 		return -EBUSY;
598 	}
599 	chip->irq = irq;
600 	card->sync_irq = chip->irq;
601 	if (request_dma(dma1, "AD1816A - 1")) {
602 		snd_printk(KERN_ERR "ad1816a: can't grab DMA1 %d\n", dma1);
603 		snd_ad1816a_free(chip);
604 		return -EBUSY;
605 	}
606 	chip->dma1 = dma1;
607 	if (request_dma(dma2, "AD1816A - 2")) {
608 		snd_printk(KERN_ERR "ad1816a: can't grab DMA2 %d\n", dma2);
609 		snd_ad1816a_free(chip);
610 		return -EBUSY;
611 	}
612 	chip->dma2 = dma2;
613 
614 	chip->card = card;
615 	chip->port = port;
616 	spin_lock_init(&chip->lock);
617 
618 	if ((error = snd_ad1816a_probe(chip))) {
619 		snd_ad1816a_free(chip);
620 		return error;
621 	}
622 
623 	snd_ad1816a_init(chip);
624 
625 	/* Register device */
626 	if ((error = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
627 		snd_ad1816a_free(chip);
628 		return error;
629 	}
630 
631 	return 0;
632 }
633 
634 static const struct snd_pcm_ops snd_ad1816a_playback_ops = {
635 	.open =		snd_ad1816a_playback_open,
636 	.close =	snd_ad1816a_playback_close,
637 	.prepare =	snd_ad1816a_playback_prepare,
638 	.trigger =	snd_ad1816a_playback_trigger,
639 	.pointer =	snd_ad1816a_playback_pointer,
640 };
641 
642 static const struct snd_pcm_ops snd_ad1816a_capture_ops = {
643 	.open =		snd_ad1816a_capture_open,
644 	.close =	snd_ad1816a_capture_close,
645 	.prepare =	snd_ad1816a_capture_prepare,
646 	.trigger =	snd_ad1816a_capture_trigger,
647 	.pointer =	snd_ad1816a_capture_pointer,
648 };
649 
650 int snd_ad1816a_pcm(struct snd_ad1816a *chip, int device)
651 {
652 	int error;
653 	struct snd_pcm *pcm;
654 
655 	if ((error = snd_pcm_new(chip->card, "AD1816A", device, 1, 1, &pcm)))
656 		return error;
657 
658 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ad1816a_playback_ops);
659 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ad1816a_capture_ops);
660 
661 	pcm->private_data = chip;
662 	pcm->info_flags = (chip->dma1 == chip->dma2 ) ? SNDRV_PCM_INFO_JOINT_DUPLEX : 0;
663 
664 	strcpy(pcm->name, snd_ad1816a_chip_id(chip));
665 	snd_ad1816a_init(chip);
666 
667 	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, chip->card->dev,
668 				       64*1024, chip->dma1 > 3 || chip->dma2 > 3 ? 128*1024 : 64*1024);
669 
670 	chip->pcm = pcm;
671 	return 0;
672 }
673 
674 int snd_ad1816a_timer(struct snd_ad1816a *chip, int device)
675 {
676 	struct snd_timer *timer;
677 	struct snd_timer_id tid;
678 	int error;
679 
680 	tid.dev_class = SNDRV_TIMER_CLASS_CARD;
681 	tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
682 	tid.card = chip->card->number;
683 	tid.device = device;
684 	tid.subdevice = 0;
685 	if ((error = snd_timer_new(chip->card, "AD1816A", &tid, &timer)) < 0)
686 		return error;
687 	strcpy(timer->name, snd_ad1816a_chip_id(chip));
688 	timer->private_data = chip;
689 	chip->timer = timer;
690 	timer->hw = snd_ad1816a_timer_table;
691 	return 0;
692 }
693 
694 /*
695  *
696  */
697 
698 static int snd_ad1816a_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
699 {
700 	static const char * const texts[8] = {
701 		"Line", "Mix", "CD", "Synth", "Video",
702 		"Mic", "Phone",
703 	};
704 
705 	return snd_ctl_enum_info(uinfo, 2, 7, texts);
706 }
707 
708 static int snd_ad1816a_get_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
709 {
710 	struct snd_ad1816a *chip = snd_kcontrol_chip(kcontrol);
711 	unsigned long flags;
712 	unsigned short val;
713 
714 	spin_lock_irqsave(&chip->lock, flags);
715 	val = snd_ad1816a_read(chip, AD1816A_ADC_SOURCE_SEL);
716 	spin_unlock_irqrestore(&chip->lock, flags);
717 	ucontrol->value.enumerated.item[0] = (val >> 12) & 7;
718 	ucontrol->value.enumerated.item[1] = (val >> 4) & 7;
719 	return 0;
720 }
721 
722 static int snd_ad1816a_put_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
723 {
724 	struct snd_ad1816a *chip = snd_kcontrol_chip(kcontrol);
725 	unsigned long flags;
726 	unsigned short val;
727 	int change;
728 
729 	if (ucontrol->value.enumerated.item[0] > 6 ||
730 	    ucontrol->value.enumerated.item[1] > 6)
731 		return -EINVAL;
732 	val = (ucontrol->value.enumerated.item[0] << 12) |
733 	      (ucontrol->value.enumerated.item[1] << 4);
734 	spin_lock_irqsave(&chip->lock, flags);
735 	change = snd_ad1816a_read(chip, AD1816A_ADC_SOURCE_SEL) != val;
736 	snd_ad1816a_write(chip, AD1816A_ADC_SOURCE_SEL, val);
737 	spin_unlock_irqrestore(&chip->lock, flags);
738 	return change;
739 }
740 
741 #define AD1816A_SINGLE_TLV(xname, reg, shift, mask, invert, xtlv)	\
742 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
743   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
744   .name = xname, .info = snd_ad1816a_info_single, \
745   .get = snd_ad1816a_get_single, .put = snd_ad1816a_put_single, \
746   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24), \
747   .tlv = { .p = (xtlv) } }
748 #define AD1816A_SINGLE(xname, reg, shift, mask, invert) \
749 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_ad1816a_info_single, \
750   .get = snd_ad1816a_get_single, .put = snd_ad1816a_put_single, \
751   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
752 
753 static int snd_ad1816a_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
754 {
755 	int mask = (kcontrol->private_value >> 16) & 0xff;
756 
757 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
758 	uinfo->count = 1;
759 	uinfo->value.integer.min = 0;
760 	uinfo->value.integer.max = mask;
761 	return 0;
762 }
763 
764 static int snd_ad1816a_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
765 {
766 	struct snd_ad1816a *chip = snd_kcontrol_chip(kcontrol);
767 	unsigned long flags;
768 	int reg = kcontrol->private_value & 0xff;
769 	int shift = (kcontrol->private_value >> 8) & 0xff;
770 	int mask = (kcontrol->private_value >> 16) & 0xff;
771 	int invert = (kcontrol->private_value >> 24) & 0xff;
772 
773 	spin_lock_irqsave(&chip->lock, flags);
774 	ucontrol->value.integer.value[0] = (snd_ad1816a_read(chip, reg) >> shift) & mask;
775 	spin_unlock_irqrestore(&chip->lock, flags);
776 	if (invert)
777 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
778 	return 0;
779 }
780 
781 static int snd_ad1816a_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
782 {
783 	struct snd_ad1816a *chip = snd_kcontrol_chip(kcontrol);
784 	unsigned long flags;
785 	int reg = kcontrol->private_value & 0xff;
786 	int shift = (kcontrol->private_value >> 8) & 0xff;
787 	int mask = (kcontrol->private_value >> 16) & 0xff;
788 	int invert = (kcontrol->private_value >> 24) & 0xff;
789 	int change;
790 	unsigned short old_val, val;
791 
792 	val = (ucontrol->value.integer.value[0] & mask);
793 	if (invert)
794 		val = mask - val;
795 	val <<= shift;
796 	spin_lock_irqsave(&chip->lock, flags);
797 	old_val = snd_ad1816a_read(chip, reg);
798 	val = (old_val & ~(mask << shift)) | val;
799 	change = val != old_val;
800 	snd_ad1816a_write(chip, reg, val);
801 	spin_unlock_irqrestore(&chip->lock, flags);
802 	return change;
803 }
804 
805 #define AD1816A_DOUBLE_TLV(xname, reg, shift_left, shift_right, mask, invert, xtlv) \
806 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
807   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
808   .name = xname, .info = snd_ad1816a_info_double,		\
809   .get = snd_ad1816a_get_double, .put = snd_ad1816a_put_double, \
810   .private_value = reg | (shift_left << 8) | (shift_right << 12) | (mask << 16) | (invert << 24), \
811   .tlv = { .p = (xtlv) } }
812 
813 #define AD1816A_DOUBLE(xname, reg, shift_left, shift_right, mask, invert) \
814 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_ad1816a_info_double, \
815   .get = snd_ad1816a_get_double, .put = snd_ad1816a_put_double, \
816   .private_value = reg | (shift_left << 8) | (shift_right << 12) | (mask << 16) | (invert << 24) }
817 
818 static int snd_ad1816a_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
819 {
820 	int mask = (kcontrol->private_value >> 16) & 0xff;
821 
822 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
823 	uinfo->count = 2;
824 	uinfo->value.integer.min = 0;
825 	uinfo->value.integer.max = mask;
826 	return 0;
827 }
828 
829 static int snd_ad1816a_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
830 {
831 	struct snd_ad1816a *chip = snd_kcontrol_chip(kcontrol);
832 	unsigned long flags;
833 	int reg = kcontrol->private_value & 0xff;
834 	int shift_left = (kcontrol->private_value >> 8) & 0x0f;
835 	int shift_right = (kcontrol->private_value >> 12) & 0x0f;
836 	int mask = (kcontrol->private_value >> 16) & 0xff;
837 	int invert = (kcontrol->private_value >> 24) & 0xff;
838 	unsigned short val;
839 
840 	spin_lock_irqsave(&chip->lock, flags);
841 	val = snd_ad1816a_read(chip, reg);
842 	ucontrol->value.integer.value[0] = (val >> shift_left) & mask;
843 	ucontrol->value.integer.value[1] = (val >> shift_right) & mask;
844 	spin_unlock_irqrestore(&chip->lock, flags);
845 	if (invert) {
846 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
847 		ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
848 	}
849 	return 0;
850 }
851 
852 static int snd_ad1816a_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
853 {
854 	struct snd_ad1816a *chip = snd_kcontrol_chip(kcontrol);
855 	unsigned long flags;
856 	int reg = kcontrol->private_value & 0xff;
857 	int shift_left = (kcontrol->private_value >> 8) & 0x0f;
858 	int shift_right = (kcontrol->private_value >> 12) & 0x0f;
859 	int mask = (kcontrol->private_value >> 16) & 0xff;
860 	int invert = (kcontrol->private_value >> 24) & 0xff;
861 	int change;
862 	unsigned short old_val, val1, val2;
863 
864 	val1 = ucontrol->value.integer.value[0] & mask;
865 	val2 = ucontrol->value.integer.value[1] & mask;
866 	if (invert) {
867 		val1 = mask - val1;
868 		val2 = mask - val2;
869 	}
870 	val1 <<= shift_left;
871 	val2 <<= shift_right;
872 	spin_lock_irqsave(&chip->lock, flags);
873 	old_val = snd_ad1816a_read(chip, reg);
874 	val1 = (old_val & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
875 	change = val1 != old_val;
876 	snd_ad1816a_write(chip, reg, val1);
877 	spin_unlock_irqrestore(&chip->lock, flags);
878 	return change;
879 }
880 
881 static const DECLARE_TLV_DB_SCALE(db_scale_4bit, -4500, 300, 0);
882 static const DECLARE_TLV_DB_SCALE(db_scale_5bit, -4650, 150, 0);
883 static const DECLARE_TLV_DB_SCALE(db_scale_6bit, -9450, 150, 0);
884 static const DECLARE_TLV_DB_SCALE(db_scale_5bit_12db_max, -3450, 150, 0);
885 static const DECLARE_TLV_DB_SCALE(db_scale_rec_gain, 0, 150, 0);
886 
887 static const struct snd_kcontrol_new snd_ad1816a_controls[] = {
888 AD1816A_DOUBLE("Master Playback Switch", AD1816A_MASTER_ATT, 15, 7, 1, 1),
889 AD1816A_DOUBLE_TLV("Master Playback Volume", AD1816A_MASTER_ATT, 8, 0, 31, 1,
890 		   db_scale_5bit),
891 AD1816A_DOUBLE("PCM Playback Switch", AD1816A_VOICE_ATT, 15, 7, 1, 1),
892 AD1816A_DOUBLE_TLV("PCM Playback Volume", AD1816A_VOICE_ATT, 8, 0, 63, 1,
893 		   db_scale_6bit),
894 AD1816A_DOUBLE("Line Playback Switch", AD1816A_LINE_GAIN_ATT, 15, 7, 1, 1),
895 AD1816A_DOUBLE_TLV("Line Playback Volume", AD1816A_LINE_GAIN_ATT, 8, 0, 31, 1,
896 		   db_scale_5bit_12db_max),
897 AD1816A_DOUBLE("CD Playback Switch", AD1816A_CD_GAIN_ATT, 15, 7, 1, 1),
898 AD1816A_DOUBLE_TLV("CD Playback Volume", AD1816A_CD_GAIN_ATT, 8, 0, 31, 1,
899 		   db_scale_5bit_12db_max),
900 AD1816A_DOUBLE("Synth Playback Switch", AD1816A_SYNTH_GAIN_ATT, 15, 7, 1, 1),
901 AD1816A_DOUBLE_TLV("Synth Playback Volume", AD1816A_SYNTH_GAIN_ATT, 8, 0, 31, 1,
902 		   db_scale_5bit_12db_max),
903 AD1816A_DOUBLE("FM Playback Switch", AD1816A_FM_ATT, 15, 7, 1, 1),
904 AD1816A_DOUBLE_TLV("FM Playback Volume", AD1816A_FM_ATT, 8, 0, 63, 1,
905 		   db_scale_6bit),
906 AD1816A_SINGLE("Mic Playback Switch", AD1816A_MIC_GAIN_ATT, 15, 1, 1),
907 AD1816A_SINGLE_TLV("Mic Playback Volume", AD1816A_MIC_GAIN_ATT, 8, 31, 1,
908 		   db_scale_5bit_12db_max),
909 AD1816A_SINGLE("Mic Boost", AD1816A_MIC_GAIN_ATT, 14, 1, 0),
910 AD1816A_DOUBLE("Video Playback Switch", AD1816A_VID_GAIN_ATT, 15, 7, 1, 1),
911 AD1816A_DOUBLE_TLV("Video Playback Volume", AD1816A_VID_GAIN_ATT, 8, 0, 31, 1,
912 		   db_scale_5bit_12db_max),
913 AD1816A_SINGLE("Phone Capture Switch", AD1816A_PHONE_IN_GAIN_ATT, 15, 1, 1),
914 AD1816A_SINGLE_TLV("Phone Capture Volume", AD1816A_PHONE_IN_GAIN_ATT, 0, 15, 1,
915 		   db_scale_4bit),
916 AD1816A_SINGLE("Phone Playback Switch", AD1816A_PHONE_OUT_ATT, 7, 1, 1),
917 AD1816A_SINGLE_TLV("Phone Playback Volume", AD1816A_PHONE_OUT_ATT, 0, 31, 1,
918 		   db_scale_5bit),
919 {
920 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
921 	.name = "Capture Source",
922 	.info = snd_ad1816a_info_mux,
923 	.get = snd_ad1816a_get_mux,
924 	.put = snd_ad1816a_put_mux,
925 },
926 AD1816A_DOUBLE("Capture Switch", AD1816A_ADC_PGA, 15, 7, 1, 1),
927 AD1816A_DOUBLE_TLV("Capture Volume", AD1816A_ADC_PGA, 8, 0, 15, 0,
928 		   db_scale_rec_gain),
929 AD1816A_SINGLE("3D Control - Switch", AD1816A_3D_PHAT_CTRL, 15, 1, 1),
930 AD1816A_SINGLE("3D Control - Level", AD1816A_3D_PHAT_CTRL, 0, 15, 0),
931 };
932 
933 int snd_ad1816a_mixer(struct snd_ad1816a *chip)
934 {
935 	struct snd_card *card;
936 	unsigned int idx;
937 	int err;
938 
939 	if (snd_BUG_ON(!chip || !chip->card))
940 		return -EINVAL;
941 
942 	card = chip->card;
943 
944 	strcpy(card->mixername, snd_ad1816a_chip_id(chip));
945 
946 	for (idx = 0; idx < ARRAY_SIZE(snd_ad1816a_controls); idx++) {
947 		if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_ad1816a_controls[idx], chip))) < 0)
948 			return err;
949 	}
950 	return 0;
951 }
952