xref: /openbmc/linux/sound/isa/wss/wss_lib.c (revision b830f94f)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
4  *  Routines for control of CS4231(A)/CS4232/InterWave & compatible chips
5  *
6  *  Bugs:
7  *     - sometimes record brokes playback with WSS portion of
8  *       Yamaha OPL3-SA3 chip
9  *     - CS4231 (GUS MAX) - still trouble with occasional noises
10  *			  - broken initialization?
11  */
12 
13 #include <linux/delay.h>
14 #include <linux/pm.h>
15 #include <linux/init.h>
16 #include <linux/interrupt.h>
17 #include <linux/slab.h>
18 #include <linux/ioport.h>
19 #include <linux/module.h>
20 #include <linux/io.h>
21 #include <sound/core.h>
22 #include <sound/wss.h>
23 #include <sound/pcm_params.h>
24 #include <sound/tlv.h>
25 
26 #include <asm/dma.h>
27 #include <asm/irq.h>
28 
29 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
30 MODULE_DESCRIPTION("Routines for control of CS4231(A)/CS4232/InterWave & compatible chips");
31 MODULE_LICENSE("GPL");
32 
33 #if 0
34 #define SNDRV_DEBUG_MCE
35 #endif
36 
37 /*
38  *  Some variables
39  */
40 
41 static unsigned char freq_bits[14] = {
42 	/* 5510 */	0x00 | CS4231_XTAL2,
43 	/* 6620 */	0x0E | CS4231_XTAL2,
44 	/* 8000 */	0x00 | CS4231_XTAL1,
45 	/* 9600 */	0x0E | CS4231_XTAL1,
46 	/* 11025 */	0x02 | CS4231_XTAL2,
47 	/* 16000 */	0x02 | CS4231_XTAL1,
48 	/* 18900 */	0x04 | CS4231_XTAL2,
49 	/* 22050 */	0x06 | CS4231_XTAL2,
50 	/* 27042 */	0x04 | CS4231_XTAL1,
51 	/* 32000 */	0x06 | CS4231_XTAL1,
52 	/* 33075 */	0x0C | CS4231_XTAL2,
53 	/* 37800 */	0x08 | CS4231_XTAL2,
54 	/* 44100 */	0x0A | CS4231_XTAL2,
55 	/* 48000 */	0x0C | CS4231_XTAL1
56 };
57 
58 static const unsigned int rates[14] = {
59 	5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
60 	27042, 32000, 33075, 37800, 44100, 48000
61 };
62 
63 static const struct snd_pcm_hw_constraint_list hw_constraints_rates = {
64 	.count = ARRAY_SIZE(rates),
65 	.list = rates,
66 	.mask = 0,
67 };
68 
69 static int snd_wss_xrate(struct snd_pcm_runtime *runtime)
70 {
71 	return snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
72 					  &hw_constraints_rates);
73 }
74 
75 static unsigned char snd_wss_original_image[32] =
76 {
77 	0x00,			/* 00/00 - lic */
78 	0x00,			/* 01/01 - ric */
79 	0x9f,			/* 02/02 - la1ic */
80 	0x9f,			/* 03/03 - ra1ic */
81 	0x9f,			/* 04/04 - la2ic */
82 	0x9f,			/* 05/05 - ra2ic */
83 	0xbf,			/* 06/06 - loc */
84 	0xbf,			/* 07/07 - roc */
85 	0x20,			/* 08/08 - pdfr */
86 	CS4231_AUTOCALIB,	/* 09/09 - ic */
87 	0x00,			/* 0a/10 - pc */
88 	0x00,			/* 0b/11 - ti */
89 	CS4231_MODE2,		/* 0c/12 - mi */
90 	0xfc,			/* 0d/13 - lbc */
91 	0x00,			/* 0e/14 - pbru */
92 	0x00,			/* 0f/15 - pbrl */
93 	0x80,			/* 10/16 - afei */
94 	0x01,			/* 11/17 - afeii */
95 	0x9f,			/* 12/18 - llic */
96 	0x9f,			/* 13/19 - rlic */
97 	0x00,			/* 14/20 - tlb */
98 	0x00,			/* 15/21 - thb */
99 	0x00,			/* 16/22 - la3mic/reserved */
100 	0x00,			/* 17/23 - ra3mic/reserved */
101 	0x00,			/* 18/24 - afs */
102 	0x00,			/* 19/25 - lamoc/version */
103 	0xcf,			/* 1a/26 - mioc */
104 	0x00,			/* 1b/27 - ramoc/reserved */
105 	0x20,			/* 1c/28 - cdfr */
106 	0x00,			/* 1d/29 - res4 */
107 	0x00,			/* 1e/30 - cbru */
108 	0x00,			/* 1f/31 - cbrl */
109 };
110 
111 static unsigned char snd_opti93x_original_image[32] =
112 {
113 	0x00,		/* 00/00 - l_mixout_outctrl */
114 	0x00,		/* 01/01 - r_mixout_outctrl */
115 	0x88,		/* 02/02 - l_cd_inctrl */
116 	0x88,		/* 03/03 - r_cd_inctrl */
117 	0x88,		/* 04/04 - l_a1/fm_inctrl */
118 	0x88,		/* 05/05 - r_a1/fm_inctrl */
119 	0x80,		/* 06/06 - l_dac_inctrl */
120 	0x80,		/* 07/07 - r_dac_inctrl */
121 	0x00,		/* 08/08 - ply_dataform_reg */
122 	0x00,		/* 09/09 - if_conf */
123 	0x00,		/* 0a/10 - pin_ctrl */
124 	0x00,		/* 0b/11 - err_init_reg */
125 	0x0a,		/* 0c/12 - id_reg */
126 	0x00,		/* 0d/13 - reserved */
127 	0x00,		/* 0e/14 - ply_upcount_reg */
128 	0x00,		/* 0f/15 - ply_lowcount_reg */
129 	0x88,		/* 10/16 - reserved/l_a1_inctrl */
130 	0x88,		/* 11/17 - reserved/r_a1_inctrl */
131 	0x88,		/* 12/18 - l_line_inctrl */
132 	0x88,		/* 13/19 - r_line_inctrl */
133 	0x88,		/* 14/20 - l_mic_inctrl */
134 	0x88,		/* 15/21 - r_mic_inctrl */
135 	0x80,		/* 16/22 - l_out_outctrl */
136 	0x80,		/* 17/23 - r_out_outctrl */
137 	0x00,		/* 18/24 - reserved */
138 	0x00,		/* 19/25 - reserved */
139 	0x00,		/* 1a/26 - reserved */
140 	0x00,		/* 1b/27 - reserved */
141 	0x00,		/* 1c/28 - cap_dataform_reg */
142 	0x00,		/* 1d/29 - reserved */
143 	0x00,		/* 1e/30 - cap_upcount_reg */
144 	0x00		/* 1f/31 - cap_lowcount_reg */
145 };
146 
147 /*
148  *  Basic I/O functions
149  */
150 
151 static inline void wss_outb(struct snd_wss *chip, u8 offset, u8 val)
152 {
153 	outb(val, chip->port + offset);
154 }
155 
156 static inline u8 wss_inb(struct snd_wss *chip, u8 offset)
157 {
158 	return inb(chip->port + offset);
159 }
160 
161 static void snd_wss_wait(struct snd_wss *chip)
162 {
163 	int timeout;
164 
165 	for (timeout = 250;
166 	     timeout > 0 && (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
167 	     timeout--)
168 		udelay(100);
169 }
170 
171 static void snd_wss_dout(struct snd_wss *chip, unsigned char reg,
172 			 unsigned char value)
173 {
174 	int timeout;
175 
176 	for (timeout = 250;
177 	     timeout > 0 && (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
178 	     timeout--)
179 		udelay(10);
180 	wss_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
181 	wss_outb(chip, CS4231P(REG), value);
182 	mb();
183 }
184 
185 void snd_wss_out(struct snd_wss *chip, unsigned char reg, unsigned char value)
186 {
187 	snd_wss_wait(chip);
188 #ifdef CONFIG_SND_DEBUG
189 	if (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
190 		snd_printk(KERN_DEBUG "out: auto calibration time out "
191 			   "- reg = 0x%x, value = 0x%x\n", reg, value);
192 #endif
193 	wss_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
194 	wss_outb(chip, CS4231P(REG), value);
195 	chip->image[reg] = value;
196 	mb();
197 	snd_printdd("codec out - reg 0x%x = 0x%x\n",
198 			chip->mce_bit | reg, value);
199 }
200 EXPORT_SYMBOL(snd_wss_out);
201 
202 unsigned char snd_wss_in(struct snd_wss *chip, unsigned char reg)
203 {
204 	snd_wss_wait(chip);
205 #ifdef CONFIG_SND_DEBUG
206 	if (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
207 		snd_printk(KERN_DEBUG "in: auto calibration time out "
208 			   "- reg = 0x%x\n", reg);
209 #endif
210 	wss_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
211 	mb();
212 	return wss_inb(chip, CS4231P(REG));
213 }
214 EXPORT_SYMBOL(snd_wss_in);
215 
216 void snd_cs4236_ext_out(struct snd_wss *chip, unsigned char reg,
217 			unsigned char val)
218 {
219 	wss_outb(chip, CS4231P(REGSEL), chip->mce_bit | 0x17);
220 	wss_outb(chip, CS4231P(REG),
221 		 reg | (chip->image[CS4236_EXT_REG] & 0x01));
222 	wss_outb(chip, CS4231P(REG), val);
223 	chip->eimage[CS4236_REG(reg)] = val;
224 #if 0
225 	printk(KERN_DEBUG "ext out : reg = 0x%x, val = 0x%x\n", reg, val);
226 #endif
227 }
228 EXPORT_SYMBOL(snd_cs4236_ext_out);
229 
230 unsigned char snd_cs4236_ext_in(struct snd_wss *chip, unsigned char reg)
231 {
232 	wss_outb(chip, CS4231P(REGSEL), chip->mce_bit | 0x17);
233 	wss_outb(chip, CS4231P(REG),
234 		 reg | (chip->image[CS4236_EXT_REG] & 0x01));
235 #if 1
236 	return wss_inb(chip, CS4231P(REG));
237 #else
238 	{
239 		unsigned char res;
240 		res = wss_inb(chip, CS4231P(REG));
241 		printk(KERN_DEBUG "ext in : reg = 0x%x, val = 0x%x\n",
242 		       reg, res);
243 		return res;
244 	}
245 #endif
246 }
247 EXPORT_SYMBOL(snd_cs4236_ext_in);
248 
249 #if 0
250 
251 static void snd_wss_debug(struct snd_wss *chip)
252 {
253 	printk(KERN_DEBUG
254 		"CS4231 REGS:      INDEX = 0x%02x  "
255 		"                 STATUS = 0x%02x\n",
256 					wss_inb(chip, CS4231P(REGSEL)),
257 					wss_inb(chip, CS4231P(STATUS)));
258 	printk(KERN_DEBUG
259 		"  0x00: left input      = 0x%02x  "
260 		"  0x10: alt 1 (CFIG 2)  = 0x%02x\n",
261 					snd_wss_in(chip, 0x00),
262 					snd_wss_in(chip, 0x10));
263 	printk(KERN_DEBUG
264 		"  0x01: right input     = 0x%02x  "
265 		"  0x11: alt 2 (CFIG 3)  = 0x%02x\n",
266 					snd_wss_in(chip, 0x01),
267 					snd_wss_in(chip, 0x11));
268 	printk(KERN_DEBUG
269 		"  0x02: GF1 left input  = 0x%02x  "
270 		"  0x12: left line in    = 0x%02x\n",
271 					snd_wss_in(chip, 0x02),
272 					snd_wss_in(chip, 0x12));
273 	printk(KERN_DEBUG
274 		"  0x03: GF1 right input = 0x%02x  "
275 		"  0x13: right line in   = 0x%02x\n",
276 					snd_wss_in(chip, 0x03),
277 					snd_wss_in(chip, 0x13));
278 	printk(KERN_DEBUG
279 		"  0x04: CD left input   = 0x%02x  "
280 		"  0x14: timer low       = 0x%02x\n",
281 					snd_wss_in(chip, 0x04),
282 					snd_wss_in(chip, 0x14));
283 	printk(KERN_DEBUG
284 		"  0x05: CD right input  = 0x%02x  "
285 		"  0x15: timer high      = 0x%02x\n",
286 					snd_wss_in(chip, 0x05),
287 					snd_wss_in(chip, 0x15));
288 	printk(KERN_DEBUG
289 		"  0x06: left output     = 0x%02x  "
290 		"  0x16: left MIC (PnP)  = 0x%02x\n",
291 					snd_wss_in(chip, 0x06),
292 					snd_wss_in(chip, 0x16));
293 	printk(KERN_DEBUG
294 		"  0x07: right output    = 0x%02x  "
295 		"  0x17: right MIC (PnP) = 0x%02x\n",
296 					snd_wss_in(chip, 0x07),
297 					snd_wss_in(chip, 0x17));
298 	printk(KERN_DEBUG
299 		"  0x08: playback format = 0x%02x  "
300 		"  0x18: IRQ status      = 0x%02x\n",
301 					snd_wss_in(chip, 0x08),
302 					snd_wss_in(chip, 0x18));
303 	printk(KERN_DEBUG
304 		"  0x09: iface (CFIG 1)  = 0x%02x  "
305 		"  0x19: left line out   = 0x%02x\n",
306 					snd_wss_in(chip, 0x09),
307 					snd_wss_in(chip, 0x19));
308 	printk(KERN_DEBUG
309 		"  0x0a: pin control     = 0x%02x  "
310 		"  0x1a: mono control    = 0x%02x\n",
311 					snd_wss_in(chip, 0x0a),
312 					snd_wss_in(chip, 0x1a));
313 	printk(KERN_DEBUG
314 		"  0x0b: init & status   = 0x%02x  "
315 		"  0x1b: right line out  = 0x%02x\n",
316 					snd_wss_in(chip, 0x0b),
317 					snd_wss_in(chip, 0x1b));
318 	printk(KERN_DEBUG
319 		"  0x0c: revision & mode = 0x%02x  "
320 		"  0x1c: record format   = 0x%02x\n",
321 					snd_wss_in(chip, 0x0c),
322 					snd_wss_in(chip, 0x1c));
323 	printk(KERN_DEBUG
324 		"  0x0d: loopback        = 0x%02x  "
325 		"  0x1d: var freq (PnP)  = 0x%02x\n",
326 					snd_wss_in(chip, 0x0d),
327 					snd_wss_in(chip, 0x1d));
328 	printk(KERN_DEBUG
329 		"  0x0e: ply upr count   = 0x%02x  "
330 		"  0x1e: ply lwr count   = 0x%02x\n",
331 					snd_wss_in(chip, 0x0e),
332 					snd_wss_in(chip, 0x1e));
333 	printk(KERN_DEBUG
334 		"  0x0f: rec upr count   = 0x%02x  "
335 		"  0x1f: rec lwr count   = 0x%02x\n",
336 					snd_wss_in(chip, 0x0f),
337 					snd_wss_in(chip, 0x1f));
338 }
339 
340 #endif
341 
342 /*
343  *  CS4231 detection / MCE routines
344  */
345 
346 static void snd_wss_busy_wait(struct snd_wss *chip)
347 {
348 	int timeout;
349 
350 	/* huh.. looks like this sequence is proper for CS4231A chip (GUS MAX) */
351 	for (timeout = 5; timeout > 0; timeout--)
352 		wss_inb(chip, CS4231P(REGSEL));
353 	/* end of cleanup sequence */
354 	for (timeout = 25000;
355 	     timeout > 0 && (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
356 	     timeout--)
357 		udelay(10);
358 }
359 
360 void snd_wss_mce_up(struct snd_wss *chip)
361 {
362 	unsigned long flags;
363 	int timeout;
364 
365 	snd_wss_wait(chip);
366 #ifdef CONFIG_SND_DEBUG
367 	if (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
368 		snd_printk(KERN_DEBUG
369 			   "mce_up - auto calibration time out (0)\n");
370 #endif
371 	spin_lock_irqsave(&chip->reg_lock, flags);
372 	chip->mce_bit |= CS4231_MCE;
373 	timeout = wss_inb(chip, CS4231P(REGSEL));
374 	if (timeout == 0x80)
375 		snd_printk(KERN_DEBUG "mce_up [0x%lx]: "
376 			   "serious init problem - codec still busy\n",
377 			   chip->port);
378 	if (!(timeout & CS4231_MCE))
379 		wss_outb(chip, CS4231P(REGSEL),
380 			 chip->mce_bit | (timeout & 0x1f));
381 	spin_unlock_irqrestore(&chip->reg_lock, flags);
382 }
383 EXPORT_SYMBOL(snd_wss_mce_up);
384 
385 void snd_wss_mce_down(struct snd_wss *chip)
386 {
387 	unsigned long flags;
388 	unsigned long end_time;
389 	int timeout;
390 	int hw_mask = WSS_HW_CS4231_MASK | WSS_HW_CS4232_MASK | WSS_HW_AD1848;
391 
392 	snd_wss_busy_wait(chip);
393 
394 #ifdef CONFIG_SND_DEBUG
395 	if (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
396 		snd_printk(KERN_DEBUG "mce_down [0x%lx] - "
397 			   "auto calibration time out (0)\n",
398 			   (long)CS4231P(REGSEL));
399 #endif
400 	spin_lock_irqsave(&chip->reg_lock, flags);
401 	chip->mce_bit &= ~CS4231_MCE;
402 	timeout = wss_inb(chip, CS4231P(REGSEL));
403 	wss_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
404 	spin_unlock_irqrestore(&chip->reg_lock, flags);
405 	if (timeout == 0x80)
406 		snd_printk(KERN_DEBUG "mce_down [0x%lx]: "
407 			   "serious init problem - codec still busy\n",
408 			   chip->port);
409 	if ((timeout & CS4231_MCE) == 0 || !(chip->hardware & hw_mask))
410 		return;
411 
412 	/*
413 	 * Wait for (possible -- during init auto-calibration may not be set)
414 	 * calibration process to start. Needs up to 5 sample periods on AD1848
415 	 * which at the slowest possible rate of 5.5125 kHz means 907 us.
416 	 */
417 	msleep(1);
418 
419 	snd_printdd("(1) jiffies = %lu\n", jiffies);
420 
421 	/* check condition up to 250 ms */
422 	end_time = jiffies + msecs_to_jiffies(250);
423 	while (snd_wss_in(chip, CS4231_TEST_INIT) &
424 		CS4231_CALIB_IN_PROGRESS) {
425 
426 		if (time_after(jiffies, end_time)) {
427 			snd_printk(KERN_ERR "mce_down - "
428 					"auto calibration time out (2)\n");
429 			return;
430 		}
431 		msleep(1);
432 	}
433 
434 	snd_printdd("(2) jiffies = %lu\n", jiffies);
435 
436 	/* check condition up to 100 ms */
437 	end_time = jiffies + msecs_to_jiffies(100);
438 	while (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT) {
439 		if (time_after(jiffies, end_time)) {
440 			snd_printk(KERN_ERR "mce_down - auto calibration time out (3)\n");
441 			return;
442 		}
443 		msleep(1);
444 	}
445 
446 	snd_printdd("(3) jiffies = %lu\n", jiffies);
447 	snd_printd("mce_down - exit = 0x%x\n", wss_inb(chip, CS4231P(REGSEL)));
448 }
449 EXPORT_SYMBOL(snd_wss_mce_down);
450 
451 static unsigned int snd_wss_get_count(unsigned char format, unsigned int size)
452 {
453 	switch (format & 0xe0) {
454 	case CS4231_LINEAR_16:
455 	case CS4231_LINEAR_16_BIG:
456 		size >>= 1;
457 		break;
458 	case CS4231_ADPCM_16:
459 		return size >> 2;
460 	}
461 	if (format & CS4231_STEREO)
462 		size >>= 1;
463 	return size;
464 }
465 
466 static int snd_wss_trigger(struct snd_pcm_substream *substream,
467 			   int cmd)
468 {
469 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
470 	int result = 0;
471 	unsigned int what;
472 	struct snd_pcm_substream *s;
473 	int do_start;
474 
475 	switch (cmd) {
476 	case SNDRV_PCM_TRIGGER_START:
477 	case SNDRV_PCM_TRIGGER_RESUME:
478 		do_start = 1; break;
479 	case SNDRV_PCM_TRIGGER_STOP:
480 	case SNDRV_PCM_TRIGGER_SUSPEND:
481 		do_start = 0; break;
482 	default:
483 		return -EINVAL;
484 	}
485 
486 	what = 0;
487 	snd_pcm_group_for_each_entry(s, substream) {
488 		if (s == chip->playback_substream) {
489 			what |= CS4231_PLAYBACK_ENABLE;
490 			snd_pcm_trigger_done(s, substream);
491 		} else if (s == chip->capture_substream) {
492 			what |= CS4231_RECORD_ENABLE;
493 			snd_pcm_trigger_done(s, substream);
494 		}
495 	}
496 	spin_lock(&chip->reg_lock);
497 	if (do_start) {
498 		chip->image[CS4231_IFACE_CTRL] |= what;
499 		if (chip->trigger)
500 			chip->trigger(chip, what, 1);
501 	} else {
502 		chip->image[CS4231_IFACE_CTRL] &= ~what;
503 		if (chip->trigger)
504 			chip->trigger(chip, what, 0);
505 	}
506 	snd_wss_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
507 	spin_unlock(&chip->reg_lock);
508 #if 0
509 	snd_wss_debug(chip);
510 #endif
511 	return result;
512 }
513 
514 /*
515  *  CODEC I/O
516  */
517 
518 static unsigned char snd_wss_get_rate(unsigned int rate)
519 {
520 	int i;
521 
522 	for (i = 0; i < ARRAY_SIZE(rates); i++)
523 		if (rate == rates[i])
524 			return freq_bits[i];
525 	// snd_BUG();
526 	return freq_bits[ARRAY_SIZE(rates) - 1];
527 }
528 
529 static unsigned char snd_wss_get_format(struct snd_wss *chip,
530 					snd_pcm_format_t format,
531 					int channels)
532 {
533 	unsigned char rformat;
534 
535 	rformat = CS4231_LINEAR_8;
536 	switch (format) {
537 	case SNDRV_PCM_FORMAT_MU_LAW:	rformat = CS4231_ULAW_8; break;
538 	case SNDRV_PCM_FORMAT_A_LAW:	rformat = CS4231_ALAW_8; break;
539 	case SNDRV_PCM_FORMAT_S16_LE:	rformat = CS4231_LINEAR_16; break;
540 	case SNDRV_PCM_FORMAT_S16_BE:	rformat = CS4231_LINEAR_16_BIG; break;
541 	case SNDRV_PCM_FORMAT_IMA_ADPCM:	rformat = CS4231_ADPCM_16; break;
542 	}
543 	if (channels > 1)
544 		rformat |= CS4231_STEREO;
545 #if 0
546 	snd_printk(KERN_DEBUG "get_format: 0x%x (mode=0x%x)\n", format, mode);
547 #endif
548 	return rformat;
549 }
550 
551 static void snd_wss_calibrate_mute(struct snd_wss *chip, int mute)
552 {
553 	unsigned long flags;
554 
555 	mute = mute ? 0x80 : 0;
556 	spin_lock_irqsave(&chip->reg_lock, flags);
557 	if (chip->calibrate_mute == mute) {
558 		spin_unlock_irqrestore(&chip->reg_lock, flags);
559 		return;
560 	}
561 	if (!mute) {
562 		snd_wss_dout(chip, CS4231_LEFT_INPUT,
563 			     chip->image[CS4231_LEFT_INPUT]);
564 		snd_wss_dout(chip, CS4231_RIGHT_INPUT,
565 			     chip->image[CS4231_RIGHT_INPUT]);
566 		snd_wss_dout(chip, CS4231_LOOPBACK,
567 			     chip->image[CS4231_LOOPBACK]);
568 	} else {
569 		snd_wss_dout(chip, CS4231_LEFT_INPUT,
570 			     0);
571 		snd_wss_dout(chip, CS4231_RIGHT_INPUT,
572 			     0);
573 		snd_wss_dout(chip, CS4231_LOOPBACK,
574 			     0xfd);
575 	}
576 
577 	snd_wss_dout(chip, CS4231_AUX1_LEFT_INPUT,
578 		     mute | chip->image[CS4231_AUX1_LEFT_INPUT]);
579 	snd_wss_dout(chip, CS4231_AUX1_RIGHT_INPUT,
580 		     mute | chip->image[CS4231_AUX1_RIGHT_INPUT]);
581 	snd_wss_dout(chip, CS4231_AUX2_LEFT_INPUT,
582 		     mute | chip->image[CS4231_AUX2_LEFT_INPUT]);
583 	snd_wss_dout(chip, CS4231_AUX2_RIGHT_INPUT,
584 		     mute | chip->image[CS4231_AUX2_RIGHT_INPUT]);
585 	snd_wss_dout(chip, CS4231_LEFT_OUTPUT,
586 		     mute | chip->image[CS4231_LEFT_OUTPUT]);
587 	snd_wss_dout(chip, CS4231_RIGHT_OUTPUT,
588 		     mute | chip->image[CS4231_RIGHT_OUTPUT]);
589 	if (!(chip->hardware & WSS_HW_AD1848_MASK)) {
590 		snd_wss_dout(chip, CS4231_LEFT_LINE_IN,
591 			     mute | chip->image[CS4231_LEFT_LINE_IN]);
592 		snd_wss_dout(chip, CS4231_RIGHT_LINE_IN,
593 			     mute | chip->image[CS4231_RIGHT_LINE_IN]);
594 		snd_wss_dout(chip, CS4231_MONO_CTRL,
595 			     mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
596 	}
597 	if (chip->hardware == WSS_HW_INTERWAVE) {
598 		snd_wss_dout(chip, CS4231_LEFT_MIC_INPUT,
599 			     mute | chip->image[CS4231_LEFT_MIC_INPUT]);
600 		snd_wss_dout(chip, CS4231_RIGHT_MIC_INPUT,
601 			     mute | chip->image[CS4231_RIGHT_MIC_INPUT]);
602 		snd_wss_dout(chip, CS4231_LINE_LEFT_OUTPUT,
603 			     mute | chip->image[CS4231_LINE_LEFT_OUTPUT]);
604 		snd_wss_dout(chip, CS4231_LINE_RIGHT_OUTPUT,
605 			     mute | chip->image[CS4231_LINE_RIGHT_OUTPUT]);
606 	}
607 	chip->calibrate_mute = mute;
608 	spin_unlock_irqrestore(&chip->reg_lock, flags);
609 }
610 
611 static void snd_wss_playback_format(struct snd_wss *chip,
612 				       struct snd_pcm_hw_params *params,
613 				       unsigned char pdfr)
614 {
615 	unsigned long flags;
616 	int full_calib = 1;
617 
618 	mutex_lock(&chip->mce_mutex);
619 	if (chip->hardware == WSS_HW_CS4231A ||
620 	    (chip->hardware & WSS_HW_CS4232_MASK)) {
621 		spin_lock_irqsave(&chip->reg_lock, flags);
622 		if ((chip->image[CS4231_PLAYBK_FORMAT] & 0x0f) == (pdfr & 0x0f)) {	/* rate is same? */
623 			snd_wss_out(chip, CS4231_ALT_FEATURE_1,
624 				    chip->image[CS4231_ALT_FEATURE_1] | 0x10);
625 			chip->image[CS4231_PLAYBK_FORMAT] = pdfr;
626 			snd_wss_out(chip, CS4231_PLAYBK_FORMAT,
627 				    chip->image[CS4231_PLAYBK_FORMAT]);
628 			snd_wss_out(chip, CS4231_ALT_FEATURE_1,
629 				    chip->image[CS4231_ALT_FEATURE_1] &= ~0x10);
630 			udelay(100); /* Fixes audible clicks at least on GUS MAX */
631 			full_calib = 0;
632 		}
633 		spin_unlock_irqrestore(&chip->reg_lock, flags);
634 	} else if (chip->hardware == WSS_HW_AD1845) {
635 		unsigned rate = params_rate(params);
636 
637 		/*
638 		 * Program the AD1845 correctly for the playback stream.
639 		 * Note that we do NOT need to toggle the MCE bit because
640 		 * the PLAYBACK_ENABLE bit of the Interface Configuration
641 		 * register is set.
642 		 *
643 		 * NOTE: We seem to need to write to the MSB before the LSB
644 		 *       to get the correct sample frequency.
645 		 */
646 		spin_lock_irqsave(&chip->reg_lock, flags);
647 		snd_wss_out(chip, CS4231_PLAYBK_FORMAT, (pdfr & 0xf0));
648 		snd_wss_out(chip, AD1845_UPR_FREQ_SEL, (rate >> 8) & 0xff);
649 		snd_wss_out(chip, AD1845_LWR_FREQ_SEL, rate & 0xff);
650 		full_calib = 0;
651 		spin_unlock_irqrestore(&chip->reg_lock, flags);
652 	}
653 	if (full_calib) {
654 		snd_wss_mce_up(chip);
655 		spin_lock_irqsave(&chip->reg_lock, flags);
656 		if (chip->hardware != WSS_HW_INTERWAVE && !chip->single_dma) {
657 			if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE)
658 				pdfr = (pdfr & 0xf0) |
659 				       (chip->image[CS4231_REC_FORMAT] & 0x0f);
660 		} else {
661 			chip->image[CS4231_PLAYBK_FORMAT] = pdfr;
662 		}
663 		snd_wss_out(chip, CS4231_PLAYBK_FORMAT, pdfr);
664 		spin_unlock_irqrestore(&chip->reg_lock, flags);
665 		if (chip->hardware == WSS_HW_OPL3SA2)
666 			udelay(100);	/* this seems to help */
667 		snd_wss_mce_down(chip);
668 	}
669 	mutex_unlock(&chip->mce_mutex);
670 }
671 
672 static void snd_wss_capture_format(struct snd_wss *chip,
673 				   struct snd_pcm_hw_params *params,
674 				   unsigned char cdfr)
675 {
676 	unsigned long flags;
677 	int full_calib = 1;
678 
679 	mutex_lock(&chip->mce_mutex);
680 	if (chip->hardware == WSS_HW_CS4231A ||
681 	    (chip->hardware & WSS_HW_CS4232_MASK)) {
682 		spin_lock_irqsave(&chip->reg_lock, flags);
683 		if ((chip->image[CS4231_PLAYBK_FORMAT] & 0x0f) == (cdfr & 0x0f) ||	/* rate is same? */
684 		    (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
685 			snd_wss_out(chip, CS4231_ALT_FEATURE_1,
686 				chip->image[CS4231_ALT_FEATURE_1] | 0x20);
687 			snd_wss_out(chip, CS4231_REC_FORMAT,
688 				chip->image[CS4231_REC_FORMAT] = cdfr);
689 			snd_wss_out(chip, CS4231_ALT_FEATURE_1,
690 				chip->image[CS4231_ALT_FEATURE_1] &= ~0x20);
691 			full_calib = 0;
692 		}
693 		spin_unlock_irqrestore(&chip->reg_lock, flags);
694 	} else if (chip->hardware == WSS_HW_AD1845) {
695 		unsigned rate = params_rate(params);
696 
697 		/*
698 		 * Program the AD1845 correctly for the capture stream.
699 		 * Note that we do NOT need to toggle the MCE bit because
700 		 * the PLAYBACK_ENABLE bit of the Interface Configuration
701 		 * register is set.
702 		 *
703 		 * NOTE: We seem to need to write to the MSB before the LSB
704 		 *       to get the correct sample frequency.
705 		 */
706 		spin_lock_irqsave(&chip->reg_lock, flags);
707 		snd_wss_out(chip, CS4231_REC_FORMAT, (cdfr & 0xf0));
708 		snd_wss_out(chip, AD1845_UPR_FREQ_SEL, (rate >> 8) & 0xff);
709 		snd_wss_out(chip, AD1845_LWR_FREQ_SEL, rate & 0xff);
710 		full_calib = 0;
711 		spin_unlock_irqrestore(&chip->reg_lock, flags);
712 	}
713 	if (full_calib) {
714 		snd_wss_mce_up(chip);
715 		spin_lock_irqsave(&chip->reg_lock, flags);
716 		if (chip->hardware != WSS_HW_INTERWAVE &&
717 		    !(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
718 			if (chip->single_dma)
719 				snd_wss_out(chip, CS4231_PLAYBK_FORMAT, cdfr);
720 			else
721 				snd_wss_out(chip, CS4231_PLAYBK_FORMAT,
722 				   (chip->image[CS4231_PLAYBK_FORMAT] & 0xf0) |
723 				   (cdfr & 0x0f));
724 			spin_unlock_irqrestore(&chip->reg_lock, flags);
725 			snd_wss_mce_down(chip);
726 			snd_wss_mce_up(chip);
727 			spin_lock_irqsave(&chip->reg_lock, flags);
728 		}
729 		if (chip->hardware & WSS_HW_AD1848_MASK)
730 			snd_wss_out(chip, CS4231_PLAYBK_FORMAT, cdfr);
731 		else
732 			snd_wss_out(chip, CS4231_REC_FORMAT, cdfr);
733 		spin_unlock_irqrestore(&chip->reg_lock, flags);
734 		snd_wss_mce_down(chip);
735 	}
736 	mutex_unlock(&chip->mce_mutex);
737 }
738 
739 /*
740  *  Timer interface
741  */
742 
743 static unsigned long snd_wss_timer_resolution(struct snd_timer *timer)
744 {
745 	struct snd_wss *chip = snd_timer_chip(timer);
746 	if (chip->hardware & WSS_HW_CS4236B_MASK)
747 		return 14467;
748 	else
749 		return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
750 }
751 
752 static int snd_wss_timer_start(struct snd_timer *timer)
753 {
754 	unsigned long flags;
755 	unsigned int ticks;
756 	struct snd_wss *chip = snd_timer_chip(timer);
757 	spin_lock_irqsave(&chip->reg_lock, flags);
758 	ticks = timer->sticks;
759 	if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
760 	    (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
761 	    (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
762 		chip->image[CS4231_TIMER_HIGH] = (unsigned char) (ticks >> 8);
763 		snd_wss_out(chip, CS4231_TIMER_HIGH,
764 			    chip->image[CS4231_TIMER_HIGH]);
765 		chip->image[CS4231_TIMER_LOW] = (unsigned char) ticks;
766 		snd_wss_out(chip, CS4231_TIMER_LOW,
767 			    chip->image[CS4231_TIMER_LOW]);
768 		snd_wss_out(chip, CS4231_ALT_FEATURE_1,
769 			    chip->image[CS4231_ALT_FEATURE_1] |
770 			    CS4231_TIMER_ENABLE);
771 	}
772 	spin_unlock_irqrestore(&chip->reg_lock, flags);
773 	return 0;
774 }
775 
776 static int snd_wss_timer_stop(struct snd_timer *timer)
777 {
778 	unsigned long flags;
779 	struct snd_wss *chip = snd_timer_chip(timer);
780 	spin_lock_irqsave(&chip->reg_lock, flags);
781 	chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE;
782 	snd_wss_out(chip, CS4231_ALT_FEATURE_1,
783 		    chip->image[CS4231_ALT_FEATURE_1]);
784 	spin_unlock_irqrestore(&chip->reg_lock, flags);
785 	return 0;
786 }
787 
788 static void snd_wss_init(struct snd_wss *chip)
789 {
790 	unsigned long flags;
791 
792 	snd_wss_calibrate_mute(chip, 1);
793 	snd_wss_mce_down(chip);
794 
795 #ifdef SNDRV_DEBUG_MCE
796 	snd_printk(KERN_DEBUG "init: (1)\n");
797 #endif
798 	snd_wss_mce_up(chip);
799 	spin_lock_irqsave(&chip->reg_lock, flags);
800 	chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
801 					    CS4231_PLAYBACK_PIO |
802 					    CS4231_RECORD_ENABLE |
803 					    CS4231_RECORD_PIO |
804 					    CS4231_CALIB_MODE);
805 	chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
806 	snd_wss_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
807 	spin_unlock_irqrestore(&chip->reg_lock, flags);
808 	snd_wss_mce_down(chip);
809 
810 #ifdef SNDRV_DEBUG_MCE
811 	snd_printk(KERN_DEBUG "init: (2)\n");
812 #endif
813 
814 	snd_wss_mce_up(chip);
815 	spin_lock_irqsave(&chip->reg_lock, flags);
816 	chip->image[CS4231_IFACE_CTRL] &= ~CS4231_AUTOCALIB;
817 	snd_wss_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
818 	snd_wss_out(chip,
819 		    CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1]);
820 	spin_unlock_irqrestore(&chip->reg_lock, flags);
821 	snd_wss_mce_down(chip);
822 
823 #ifdef SNDRV_DEBUG_MCE
824 	snd_printk(KERN_DEBUG "init: (3) - afei = 0x%x\n",
825 		   chip->image[CS4231_ALT_FEATURE_1]);
826 #endif
827 
828 	spin_lock_irqsave(&chip->reg_lock, flags);
829 	snd_wss_out(chip, CS4231_ALT_FEATURE_2,
830 		    chip->image[CS4231_ALT_FEATURE_2]);
831 	spin_unlock_irqrestore(&chip->reg_lock, flags);
832 
833 	snd_wss_mce_up(chip);
834 	spin_lock_irqsave(&chip->reg_lock, flags);
835 	snd_wss_out(chip, CS4231_PLAYBK_FORMAT,
836 		    chip->image[CS4231_PLAYBK_FORMAT]);
837 	spin_unlock_irqrestore(&chip->reg_lock, flags);
838 	snd_wss_mce_down(chip);
839 
840 #ifdef SNDRV_DEBUG_MCE
841 	snd_printk(KERN_DEBUG "init: (4)\n");
842 #endif
843 
844 	snd_wss_mce_up(chip);
845 	spin_lock_irqsave(&chip->reg_lock, flags);
846 	if (!(chip->hardware & WSS_HW_AD1848_MASK))
847 		snd_wss_out(chip, CS4231_REC_FORMAT,
848 			    chip->image[CS4231_REC_FORMAT]);
849 	spin_unlock_irqrestore(&chip->reg_lock, flags);
850 	snd_wss_mce_down(chip);
851 	snd_wss_calibrate_mute(chip, 0);
852 
853 #ifdef SNDRV_DEBUG_MCE
854 	snd_printk(KERN_DEBUG "init: (5)\n");
855 #endif
856 }
857 
858 static int snd_wss_open(struct snd_wss *chip, unsigned int mode)
859 {
860 	unsigned long flags;
861 
862 	mutex_lock(&chip->open_mutex);
863 	if ((chip->mode & mode) ||
864 	    ((chip->mode & WSS_MODE_OPEN) && chip->single_dma)) {
865 		mutex_unlock(&chip->open_mutex);
866 		return -EAGAIN;
867 	}
868 	if (chip->mode & WSS_MODE_OPEN) {
869 		chip->mode |= mode;
870 		mutex_unlock(&chip->open_mutex);
871 		return 0;
872 	}
873 	/* ok. now enable and ack CODEC IRQ */
874 	spin_lock_irqsave(&chip->reg_lock, flags);
875 	if (!(chip->hardware & WSS_HW_AD1848_MASK)) {
876 		snd_wss_out(chip, CS4231_IRQ_STATUS,
877 			    CS4231_PLAYBACK_IRQ |
878 			    CS4231_RECORD_IRQ |
879 			    CS4231_TIMER_IRQ);
880 		snd_wss_out(chip, CS4231_IRQ_STATUS, 0);
881 	}
882 	wss_outb(chip, CS4231P(STATUS), 0);	/* clear IRQ */
883 	wss_outb(chip, CS4231P(STATUS), 0);	/* clear IRQ */
884 	chip->image[CS4231_PIN_CTRL] |= CS4231_IRQ_ENABLE;
885 	snd_wss_out(chip, CS4231_PIN_CTRL, chip->image[CS4231_PIN_CTRL]);
886 	if (!(chip->hardware & WSS_HW_AD1848_MASK)) {
887 		snd_wss_out(chip, CS4231_IRQ_STATUS,
888 			    CS4231_PLAYBACK_IRQ |
889 			    CS4231_RECORD_IRQ |
890 			    CS4231_TIMER_IRQ);
891 		snd_wss_out(chip, CS4231_IRQ_STATUS, 0);
892 	}
893 	spin_unlock_irqrestore(&chip->reg_lock, flags);
894 
895 	chip->mode = mode;
896 	mutex_unlock(&chip->open_mutex);
897 	return 0;
898 }
899 
900 static void snd_wss_close(struct snd_wss *chip, unsigned int mode)
901 {
902 	unsigned long flags;
903 
904 	mutex_lock(&chip->open_mutex);
905 	chip->mode &= ~mode;
906 	if (chip->mode & WSS_MODE_OPEN) {
907 		mutex_unlock(&chip->open_mutex);
908 		return;
909 	}
910 	/* disable IRQ */
911 	spin_lock_irqsave(&chip->reg_lock, flags);
912 	if (!(chip->hardware & WSS_HW_AD1848_MASK))
913 		snd_wss_out(chip, CS4231_IRQ_STATUS, 0);
914 	wss_outb(chip, CS4231P(STATUS), 0);	/* clear IRQ */
915 	wss_outb(chip, CS4231P(STATUS), 0);	/* clear IRQ */
916 	chip->image[CS4231_PIN_CTRL] &= ~CS4231_IRQ_ENABLE;
917 	snd_wss_out(chip, CS4231_PIN_CTRL, chip->image[CS4231_PIN_CTRL]);
918 
919 	/* now disable record & playback */
920 
921 	if (chip->image[CS4231_IFACE_CTRL] & (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
922 					       CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
923 		spin_unlock_irqrestore(&chip->reg_lock, flags);
924 		snd_wss_mce_up(chip);
925 		spin_lock_irqsave(&chip->reg_lock, flags);
926 		chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
927 						     CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
928 		snd_wss_out(chip, CS4231_IFACE_CTRL,
929 			    chip->image[CS4231_IFACE_CTRL]);
930 		spin_unlock_irqrestore(&chip->reg_lock, flags);
931 		snd_wss_mce_down(chip);
932 		spin_lock_irqsave(&chip->reg_lock, flags);
933 	}
934 
935 	/* clear IRQ again */
936 	if (!(chip->hardware & WSS_HW_AD1848_MASK))
937 		snd_wss_out(chip, CS4231_IRQ_STATUS, 0);
938 	wss_outb(chip, CS4231P(STATUS), 0);	/* clear IRQ */
939 	wss_outb(chip, CS4231P(STATUS), 0);	/* clear IRQ */
940 	spin_unlock_irqrestore(&chip->reg_lock, flags);
941 
942 	chip->mode = 0;
943 	mutex_unlock(&chip->open_mutex);
944 }
945 
946 /*
947  *  timer open/close
948  */
949 
950 static int snd_wss_timer_open(struct snd_timer *timer)
951 {
952 	struct snd_wss *chip = snd_timer_chip(timer);
953 	snd_wss_open(chip, WSS_MODE_TIMER);
954 	return 0;
955 }
956 
957 static int snd_wss_timer_close(struct snd_timer *timer)
958 {
959 	struct snd_wss *chip = snd_timer_chip(timer);
960 	snd_wss_close(chip, WSS_MODE_TIMER);
961 	return 0;
962 }
963 
964 static struct snd_timer_hardware snd_wss_timer_table =
965 {
966 	.flags =	SNDRV_TIMER_HW_AUTO,
967 	.resolution =	9945,
968 	.ticks =	65535,
969 	.open =		snd_wss_timer_open,
970 	.close =	snd_wss_timer_close,
971 	.c_resolution = snd_wss_timer_resolution,
972 	.start =	snd_wss_timer_start,
973 	.stop =		snd_wss_timer_stop,
974 };
975 
976 /*
977  *  ok.. exported functions..
978  */
979 
980 static int snd_wss_playback_hw_params(struct snd_pcm_substream *substream,
981 					 struct snd_pcm_hw_params *hw_params)
982 {
983 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
984 	unsigned char new_pdfr;
985 	int err;
986 
987 	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
988 		return err;
989 	new_pdfr = snd_wss_get_format(chip, params_format(hw_params),
990 				params_channels(hw_params)) |
991 				snd_wss_get_rate(params_rate(hw_params));
992 	chip->set_playback_format(chip, hw_params, new_pdfr);
993 	return 0;
994 }
995 
996 static int snd_wss_playback_hw_free(struct snd_pcm_substream *substream)
997 {
998 	return snd_pcm_lib_free_pages(substream);
999 }
1000 
1001 static int snd_wss_playback_prepare(struct snd_pcm_substream *substream)
1002 {
1003 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
1004 	struct snd_pcm_runtime *runtime = substream->runtime;
1005 	unsigned long flags;
1006 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
1007 	unsigned int count = snd_pcm_lib_period_bytes(substream);
1008 
1009 	spin_lock_irqsave(&chip->reg_lock, flags);
1010 	chip->p_dma_size = size;
1011 	chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO);
1012 	snd_dma_program(chip->dma1, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
1013 	count = snd_wss_get_count(chip->image[CS4231_PLAYBK_FORMAT], count) - 1;
1014 	snd_wss_out(chip, CS4231_PLY_LWR_CNT, (unsigned char) count);
1015 	snd_wss_out(chip, CS4231_PLY_UPR_CNT, (unsigned char) (count >> 8));
1016 	spin_unlock_irqrestore(&chip->reg_lock, flags);
1017 #if 0
1018 	snd_wss_debug(chip);
1019 #endif
1020 	return 0;
1021 }
1022 
1023 static int snd_wss_capture_hw_params(struct snd_pcm_substream *substream,
1024 					struct snd_pcm_hw_params *hw_params)
1025 {
1026 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
1027 	unsigned char new_cdfr;
1028 	int err;
1029 
1030 	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
1031 		return err;
1032 	new_cdfr = snd_wss_get_format(chip, params_format(hw_params),
1033 			   params_channels(hw_params)) |
1034 			   snd_wss_get_rate(params_rate(hw_params));
1035 	chip->set_capture_format(chip, hw_params, new_cdfr);
1036 	return 0;
1037 }
1038 
1039 static int snd_wss_capture_hw_free(struct snd_pcm_substream *substream)
1040 {
1041 	return snd_pcm_lib_free_pages(substream);
1042 }
1043 
1044 static int snd_wss_capture_prepare(struct snd_pcm_substream *substream)
1045 {
1046 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
1047 	struct snd_pcm_runtime *runtime = substream->runtime;
1048 	unsigned long flags;
1049 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
1050 	unsigned int count = snd_pcm_lib_period_bytes(substream);
1051 
1052 	spin_lock_irqsave(&chip->reg_lock, flags);
1053 	chip->c_dma_size = size;
1054 	chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
1055 	snd_dma_program(chip->dma2, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
1056 	if (chip->hardware & WSS_HW_AD1848_MASK)
1057 		count = snd_wss_get_count(chip->image[CS4231_PLAYBK_FORMAT],
1058 					  count);
1059 	else
1060 		count = snd_wss_get_count(chip->image[CS4231_REC_FORMAT],
1061 					  count);
1062 	count--;
1063 	if (chip->single_dma && chip->hardware != WSS_HW_INTERWAVE) {
1064 		snd_wss_out(chip, CS4231_PLY_LWR_CNT, (unsigned char) count);
1065 		snd_wss_out(chip, CS4231_PLY_UPR_CNT,
1066 			    (unsigned char) (count >> 8));
1067 	} else {
1068 		snd_wss_out(chip, CS4231_REC_LWR_CNT, (unsigned char) count);
1069 		snd_wss_out(chip, CS4231_REC_UPR_CNT,
1070 			    (unsigned char) (count >> 8));
1071 	}
1072 	spin_unlock_irqrestore(&chip->reg_lock, flags);
1073 	return 0;
1074 }
1075 
1076 void snd_wss_overrange(struct snd_wss *chip)
1077 {
1078 	unsigned long flags;
1079 	unsigned char res;
1080 
1081 	spin_lock_irqsave(&chip->reg_lock, flags);
1082 	res = snd_wss_in(chip, CS4231_TEST_INIT);
1083 	spin_unlock_irqrestore(&chip->reg_lock, flags);
1084 	if (res & (0x08 | 0x02))	/* detect overrange only above 0dB; may be user selectable? */
1085 		chip->capture_substream->runtime->overrange++;
1086 }
1087 EXPORT_SYMBOL(snd_wss_overrange);
1088 
1089 irqreturn_t snd_wss_interrupt(int irq, void *dev_id)
1090 {
1091 	struct snd_wss *chip = dev_id;
1092 	unsigned char status;
1093 
1094 	if (chip->hardware & WSS_HW_AD1848_MASK)
1095 		/* pretend it was the only possible irq for AD1848 */
1096 		status = CS4231_PLAYBACK_IRQ;
1097 	else
1098 		status = snd_wss_in(chip, CS4231_IRQ_STATUS);
1099 	if (status & CS4231_TIMER_IRQ) {
1100 		if (chip->timer)
1101 			snd_timer_interrupt(chip->timer, chip->timer->sticks);
1102 	}
1103 	if (chip->single_dma && chip->hardware != WSS_HW_INTERWAVE) {
1104 		if (status & CS4231_PLAYBACK_IRQ) {
1105 			if (chip->mode & WSS_MODE_PLAY) {
1106 				if (chip->playback_substream)
1107 					snd_pcm_period_elapsed(chip->playback_substream);
1108 			}
1109 			if (chip->mode & WSS_MODE_RECORD) {
1110 				if (chip->capture_substream) {
1111 					snd_wss_overrange(chip);
1112 					snd_pcm_period_elapsed(chip->capture_substream);
1113 				}
1114 			}
1115 		}
1116 	} else {
1117 		if (status & CS4231_PLAYBACK_IRQ) {
1118 			if (chip->playback_substream)
1119 				snd_pcm_period_elapsed(chip->playback_substream);
1120 		}
1121 		if (status & CS4231_RECORD_IRQ) {
1122 			if (chip->capture_substream) {
1123 				snd_wss_overrange(chip);
1124 				snd_pcm_period_elapsed(chip->capture_substream);
1125 			}
1126 		}
1127 	}
1128 
1129 	spin_lock(&chip->reg_lock);
1130 	status = ~CS4231_ALL_IRQS | ~status;
1131 	if (chip->hardware & WSS_HW_AD1848_MASK)
1132 		wss_outb(chip, CS4231P(STATUS), 0);
1133 	else
1134 		snd_wss_out(chip, CS4231_IRQ_STATUS, status);
1135 	spin_unlock(&chip->reg_lock);
1136 	return IRQ_HANDLED;
1137 }
1138 EXPORT_SYMBOL(snd_wss_interrupt);
1139 
1140 static snd_pcm_uframes_t snd_wss_playback_pointer(struct snd_pcm_substream *substream)
1141 {
1142 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
1143 	size_t ptr;
1144 
1145 	if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
1146 		return 0;
1147 	ptr = snd_dma_pointer(chip->dma1, chip->p_dma_size);
1148 	return bytes_to_frames(substream->runtime, ptr);
1149 }
1150 
1151 static snd_pcm_uframes_t snd_wss_capture_pointer(struct snd_pcm_substream *substream)
1152 {
1153 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
1154 	size_t ptr;
1155 
1156 	if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
1157 		return 0;
1158 	ptr = snd_dma_pointer(chip->dma2, chip->c_dma_size);
1159 	return bytes_to_frames(substream->runtime, ptr);
1160 }
1161 
1162 /*
1163 
1164  */
1165 
1166 static int snd_ad1848_probe(struct snd_wss *chip)
1167 {
1168 	unsigned long timeout = jiffies + msecs_to_jiffies(1000);
1169 	unsigned long flags;
1170 	unsigned char r;
1171 	unsigned short hardware = 0;
1172 	int err = 0;
1173 	int i;
1174 
1175 	while (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT) {
1176 		if (time_after(jiffies, timeout))
1177 			return -ENODEV;
1178 		cond_resched();
1179 	}
1180 	spin_lock_irqsave(&chip->reg_lock, flags);
1181 
1182 	/* set CS423x MODE 1 */
1183 	snd_wss_dout(chip, CS4231_MISC_INFO, 0);
1184 
1185 	snd_wss_dout(chip, CS4231_RIGHT_INPUT, 0x45); /* 0x55 & ~0x10 */
1186 	r = snd_wss_in(chip, CS4231_RIGHT_INPUT);
1187 	if (r != 0x45) {
1188 		/* RMGE always high on AD1847 */
1189 		if ((r & ~CS4231_ENABLE_MIC_GAIN) != 0x45) {
1190 			err = -ENODEV;
1191 			goto out;
1192 		}
1193 		hardware = WSS_HW_AD1847;
1194 	} else {
1195 		snd_wss_dout(chip, CS4231_LEFT_INPUT,  0xaa);
1196 		r = snd_wss_in(chip, CS4231_LEFT_INPUT);
1197 		/* L/RMGE always low on AT2320 */
1198 		if ((r | CS4231_ENABLE_MIC_GAIN) != 0xaa) {
1199 			err = -ENODEV;
1200 			goto out;
1201 		}
1202 	}
1203 
1204 	/* clear pending IRQ */
1205 	wss_inb(chip, CS4231P(STATUS));
1206 	wss_outb(chip, CS4231P(STATUS), 0);
1207 	mb();
1208 
1209 	if ((chip->hardware & WSS_HW_TYPE_MASK) != WSS_HW_DETECT)
1210 		goto out;
1211 
1212 	if (hardware) {
1213 		chip->hardware = hardware;
1214 		goto out;
1215 	}
1216 
1217 	r = snd_wss_in(chip, CS4231_MISC_INFO);
1218 
1219 	/* set CS423x MODE 2 */
1220 	snd_wss_dout(chip, CS4231_MISC_INFO, CS4231_MODE2);
1221 	for (i = 0; i < 16; i++) {
1222 		if (snd_wss_in(chip, i) != snd_wss_in(chip, 16 + i)) {
1223 			/* we have more than 16 registers: check ID */
1224 			if ((r & 0xf) != 0xa)
1225 				goto out_mode;
1226 			/*
1227 			 * on CMI8330, CS4231_VERSION is volume control and
1228 			 * can be set to 0
1229 			 */
1230 			snd_wss_dout(chip, CS4231_VERSION, 0);
1231 			r = snd_wss_in(chip, CS4231_VERSION) & 0xe7;
1232 			if (!r)
1233 				chip->hardware = WSS_HW_CMI8330;
1234 			goto out_mode;
1235 		}
1236 	}
1237 	if (r & 0x80)
1238 		chip->hardware = WSS_HW_CS4248;
1239 	else
1240 		chip->hardware = WSS_HW_AD1848;
1241 out_mode:
1242 	snd_wss_dout(chip, CS4231_MISC_INFO, 0);
1243 out:
1244 	spin_unlock_irqrestore(&chip->reg_lock, flags);
1245 	return err;
1246 }
1247 
1248 static int snd_wss_probe(struct snd_wss *chip)
1249 {
1250 	unsigned long flags;
1251 	int i, id, rev, regnum;
1252 	unsigned char *ptr;
1253 	unsigned int hw;
1254 
1255 	id = snd_ad1848_probe(chip);
1256 	if (id < 0)
1257 		return id;
1258 
1259 	hw = chip->hardware;
1260 	if ((hw & WSS_HW_TYPE_MASK) == WSS_HW_DETECT) {
1261 		for (i = 0; i < 50; i++) {
1262 			mb();
1263 			if (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
1264 				msleep(2);
1265 			else {
1266 				spin_lock_irqsave(&chip->reg_lock, flags);
1267 				snd_wss_out(chip, CS4231_MISC_INFO,
1268 					    CS4231_MODE2);
1269 				id = snd_wss_in(chip, CS4231_MISC_INFO) & 0x0f;
1270 				spin_unlock_irqrestore(&chip->reg_lock, flags);
1271 				if (id == 0x0a)
1272 					break;	/* this is valid value */
1273 			}
1274 		}
1275 		snd_printdd("wss: port = 0x%lx, id = 0x%x\n", chip->port, id);
1276 		if (id != 0x0a)
1277 			return -ENODEV;	/* no valid device found */
1278 
1279 		rev = snd_wss_in(chip, CS4231_VERSION) & 0xe7;
1280 		snd_printdd("CS4231: VERSION (I25) = 0x%x\n", rev);
1281 		if (rev == 0x80) {
1282 			unsigned char tmp = snd_wss_in(chip, 23);
1283 			snd_wss_out(chip, 23, ~tmp);
1284 			if (snd_wss_in(chip, 23) != tmp)
1285 				chip->hardware = WSS_HW_AD1845;
1286 			else
1287 				chip->hardware = WSS_HW_CS4231;
1288 		} else if (rev == 0xa0) {
1289 			chip->hardware = WSS_HW_CS4231A;
1290 		} else if (rev == 0xa2) {
1291 			chip->hardware = WSS_HW_CS4232;
1292 		} else if (rev == 0xb2) {
1293 			chip->hardware = WSS_HW_CS4232A;
1294 		} else if (rev == 0x83) {
1295 			chip->hardware = WSS_HW_CS4236;
1296 		} else if (rev == 0x03) {
1297 			chip->hardware = WSS_HW_CS4236B;
1298 		} else {
1299 			snd_printk(KERN_ERR
1300 				   "unknown CS chip with version 0x%x\n", rev);
1301 			return -ENODEV;		/* unknown CS4231 chip? */
1302 		}
1303 	}
1304 	spin_lock_irqsave(&chip->reg_lock, flags);
1305 	wss_inb(chip, CS4231P(STATUS));	/* clear any pendings IRQ */
1306 	wss_outb(chip, CS4231P(STATUS), 0);
1307 	mb();
1308 	spin_unlock_irqrestore(&chip->reg_lock, flags);
1309 
1310 	if (!(chip->hardware & WSS_HW_AD1848_MASK))
1311 		chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1312 	switch (chip->hardware) {
1313 	case WSS_HW_INTERWAVE:
1314 		chip->image[CS4231_MISC_INFO] = CS4231_IW_MODE3;
1315 		break;
1316 	case WSS_HW_CS4235:
1317 	case WSS_HW_CS4236B:
1318 	case WSS_HW_CS4237B:
1319 	case WSS_HW_CS4238B:
1320 	case WSS_HW_CS4239:
1321 		if (hw == WSS_HW_DETECT3)
1322 			chip->image[CS4231_MISC_INFO] = CS4231_4236_MODE3;
1323 		else
1324 			chip->hardware = WSS_HW_CS4236;
1325 		break;
1326 	}
1327 
1328 	chip->image[CS4231_IFACE_CTRL] =
1329 	    (chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA) |
1330 	    (chip->single_dma ? CS4231_SINGLE_DMA : 0);
1331 	if (chip->hardware != WSS_HW_OPTI93X) {
1332 		chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1333 		chip->image[CS4231_ALT_FEATURE_2] =
1334 			chip->hardware == WSS_HW_INTERWAVE ? 0xc2 : 0x01;
1335 	}
1336 	/* enable fine grained frequency selection */
1337 	if (chip->hardware == WSS_HW_AD1845)
1338 		chip->image[AD1845_PWR_DOWN] = 8;
1339 
1340 	ptr = (unsigned char *) &chip->image;
1341 	regnum = (chip->hardware & WSS_HW_AD1848_MASK) ? 16 : 32;
1342 	snd_wss_mce_down(chip);
1343 	spin_lock_irqsave(&chip->reg_lock, flags);
1344 	for (i = 0; i < regnum; i++)	/* ok.. fill all registers */
1345 		snd_wss_out(chip, i, *ptr++);
1346 	spin_unlock_irqrestore(&chip->reg_lock, flags);
1347 	snd_wss_mce_up(chip);
1348 	snd_wss_mce_down(chip);
1349 
1350 	mdelay(2);
1351 
1352 	/* ok.. try check hardware version for CS4236+ chips */
1353 	if ((hw & WSS_HW_TYPE_MASK) == WSS_HW_DETECT) {
1354 		if (chip->hardware == WSS_HW_CS4236B) {
1355 			rev = snd_cs4236_ext_in(chip, CS4236_VERSION);
1356 			snd_cs4236_ext_out(chip, CS4236_VERSION, 0xff);
1357 			id = snd_cs4236_ext_in(chip, CS4236_VERSION);
1358 			snd_cs4236_ext_out(chip, CS4236_VERSION, rev);
1359 			snd_printdd("CS4231: ext version; rev = 0x%x, id = 0x%x\n", rev, id);
1360 			if ((id & 0x1f) == 0x1d) {	/* CS4235 */
1361 				chip->hardware = WSS_HW_CS4235;
1362 				switch (id >> 5) {
1363 				case 4:
1364 				case 5:
1365 				case 6:
1366 					break;
1367 				default:
1368 					snd_printk(KERN_WARNING
1369 						"unknown CS4235 chip "
1370 						"(enhanced version = 0x%x)\n",
1371 						id);
1372 				}
1373 			} else if ((id & 0x1f) == 0x0b) {	/* CS4236/B */
1374 				switch (id >> 5) {
1375 				case 4:
1376 				case 5:
1377 				case 6:
1378 				case 7:
1379 					chip->hardware = WSS_HW_CS4236B;
1380 					break;
1381 				default:
1382 					snd_printk(KERN_WARNING
1383 						"unknown CS4236 chip "
1384 						"(enhanced version = 0x%x)\n",
1385 						id);
1386 				}
1387 			} else if ((id & 0x1f) == 0x08) {	/* CS4237B */
1388 				chip->hardware = WSS_HW_CS4237B;
1389 				switch (id >> 5) {
1390 				case 4:
1391 				case 5:
1392 				case 6:
1393 				case 7:
1394 					break;
1395 				default:
1396 					snd_printk(KERN_WARNING
1397 						"unknown CS4237B chip "
1398 						"(enhanced version = 0x%x)\n",
1399 						id);
1400 				}
1401 			} else if ((id & 0x1f) == 0x09) {	/* CS4238B */
1402 				chip->hardware = WSS_HW_CS4238B;
1403 				switch (id >> 5) {
1404 				case 5:
1405 				case 6:
1406 				case 7:
1407 					break;
1408 				default:
1409 					snd_printk(KERN_WARNING
1410 						"unknown CS4238B chip "
1411 						"(enhanced version = 0x%x)\n",
1412 						id);
1413 				}
1414 			} else if ((id & 0x1f) == 0x1e) {	/* CS4239 */
1415 				chip->hardware = WSS_HW_CS4239;
1416 				switch (id >> 5) {
1417 				case 4:
1418 				case 5:
1419 				case 6:
1420 					break;
1421 				default:
1422 					snd_printk(KERN_WARNING
1423 						"unknown CS4239 chip "
1424 						"(enhanced version = 0x%x)\n",
1425 						id);
1426 				}
1427 			} else {
1428 				snd_printk(KERN_WARNING
1429 					   "unknown CS4236/CS423xB chip "
1430 					   "(enhanced version = 0x%x)\n", id);
1431 			}
1432 		}
1433 	}
1434 	return 0;		/* all things are ok.. */
1435 }
1436 
1437 /*
1438 
1439  */
1440 
1441 static const struct snd_pcm_hardware snd_wss_playback =
1442 {
1443 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1444 				 SNDRV_PCM_INFO_MMAP_VALID |
1445 				 SNDRV_PCM_INFO_SYNC_START),
1446 	.formats =		(SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
1447 				 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
1448 	.rates =		SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
1449 	.rate_min =		5510,
1450 	.rate_max =		48000,
1451 	.channels_min =		1,
1452 	.channels_max =		2,
1453 	.buffer_bytes_max =	(128*1024),
1454 	.period_bytes_min =	64,
1455 	.period_bytes_max =	(128*1024),
1456 	.periods_min =		1,
1457 	.periods_max =		1024,
1458 	.fifo_size =		0,
1459 };
1460 
1461 static const struct snd_pcm_hardware snd_wss_capture =
1462 {
1463 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1464 				 SNDRV_PCM_INFO_MMAP_VALID |
1465 				 SNDRV_PCM_INFO_RESUME |
1466 				 SNDRV_PCM_INFO_SYNC_START),
1467 	.formats =		(SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
1468 				 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
1469 	.rates =		SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
1470 	.rate_min =		5510,
1471 	.rate_max =		48000,
1472 	.channels_min =		1,
1473 	.channels_max =		2,
1474 	.buffer_bytes_max =	(128*1024),
1475 	.period_bytes_min =	64,
1476 	.period_bytes_max =	(128*1024),
1477 	.periods_min =		1,
1478 	.periods_max =		1024,
1479 	.fifo_size =		0,
1480 };
1481 
1482 /*
1483 
1484  */
1485 
1486 static int snd_wss_playback_open(struct snd_pcm_substream *substream)
1487 {
1488 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
1489 	struct snd_pcm_runtime *runtime = substream->runtime;
1490 	int err;
1491 
1492 	runtime->hw = snd_wss_playback;
1493 
1494 	/* hardware limitation of older chipsets */
1495 	if (chip->hardware & WSS_HW_AD1848_MASK)
1496 		runtime->hw.formats &= ~(SNDRV_PCM_FMTBIT_IMA_ADPCM |
1497 					 SNDRV_PCM_FMTBIT_S16_BE);
1498 
1499 	/* hardware bug in InterWave chipset */
1500 	if (chip->hardware == WSS_HW_INTERWAVE && chip->dma1 > 3)
1501 		runtime->hw.formats &= ~SNDRV_PCM_FMTBIT_MU_LAW;
1502 
1503 	/* hardware limitation of cheap chips */
1504 	if (chip->hardware == WSS_HW_CS4235 ||
1505 	    chip->hardware == WSS_HW_CS4239)
1506 		runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE;
1507 
1508 	snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.buffer_bytes_max);
1509 	snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.period_bytes_max);
1510 
1511 	if (chip->claim_dma) {
1512 		if ((err = chip->claim_dma(chip, chip->dma_private_data, chip->dma1)) < 0)
1513 			return err;
1514 	}
1515 
1516 	err = snd_wss_open(chip, WSS_MODE_PLAY);
1517 	if (err < 0) {
1518 		if (chip->release_dma)
1519 			chip->release_dma(chip, chip->dma_private_data, chip->dma1);
1520 		return err;
1521 	}
1522 	chip->playback_substream = substream;
1523 	snd_pcm_set_sync(substream);
1524 	chip->rate_constraint(runtime);
1525 	return 0;
1526 }
1527 
1528 static int snd_wss_capture_open(struct snd_pcm_substream *substream)
1529 {
1530 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
1531 	struct snd_pcm_runtime *runtime = substream->runtime;
1532 	int err;
1533 
1534 	runtime->hw = snd_wss_capture;
1535 
1536 	/* hardware limitation of older chipsets */
1537 	if (chip->hardware & WSS_HW_AD1848_MASK)
1538 		runtime->hw.formats &= ~(SNDRV_PCM_FMTBIT_IMA_ADPCM |
1539 					 SNDRV_PCM_FMTBIT_S16_BE);
1540 
1541 	/* hardware limitation of cheap chips */
1542 	if (chip->hardware == WSS_HW_CS4235 ||
1543 	    chip->hardware == WSS_HW_CS4239 ||
1544 	    chip->hardware == WSS_HW_OPTI93X)
1545 		runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 |
1546 				      SNDRV_PCM_FMTBIT_S16_LE;
1547 
1548 	snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.buffer_bytes_max);
1549 	snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.period_bytes_max);
1550 
1551 	if (chip->claim_dma) {
1552 		if ((err = chip->claim_dma(chip, chip->dma_private_data, chip->dma2)) < 0)
1553 			return err;
1554 	}
1555 
1556 	err = snd_wss_open(chip, WSS_MODE_RECORD);
1557 	if (err < 0) {
1558 		if (chip->release_dma)
1559 			chip->release_dma(chip, chip->dma_private_data, chip->dma2);
1560 		return err;
1561 	}
1562 	chip->capture_substream = substream;
1563 	snd_pcm_set_sync(substream);
1564 	chip->rate_constraint(runtime);
1565 	return 0;
1566 }
1567 
1568 static int snd_wss_playback_close(struct snd_pcm_substream *substream)
1569 {
1570 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
1571 
1572 	chip->playback_substream = NULL;
1573 	snd_wss_close(chip, WSS_MODE_PLAY);
1574 	return 0;
1575 }
1576 
1577 static int snd_wss_capture_close(struct snd_pcm_substream *substream)
1578 {
1579 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
1580 
1581 	chip->capture_substream = NULL;
1582 	snd_wss_close(chip, WSS_MODE_RECORD);
1583 	return 0;
1584 }
1585 
1586 static void snd_wss_thinkpad_twiddle(struct snd_wss *chip, int on)
1587 {
1588 	int tmp;
1589 
1590 	if (!chip->thinkpad_flag)
1591 		return;
1592 
1593 	outb(0x1c, AD1848_THINKPAD_CTL_PORT1);
1594 	tmp = inb(AD1848_THINKPAD_CTL_PORT2);
1595 
1596 	if (on)
1597 		/* turn it on */
1598 		tmp |= AD1848_THINKPAD_CS4248_ENABLE_BIT;
1599 	else
1600 		/* turn it off */
1601 		tmp &= ~AD1848_THINKPAD_CS4248_ENABLE_BIT;
1602 
1603 	outb(tmp, AD1848_THINKPAD_CTL_PORT2);
1604 }
1605 
1606 #ifdef CONFIG_PM
1607 
1608 /* lowlevel suspend callback for CS4231 */
1609 static void snd_wss_suspend(struct snd_wss *chip)
1610 {
1611 	int reg;
1612 	unsigned long flags;
1613 
1614 	spin_lock_irqsave(&chip->reg_lock, flags);
1615 	for (reg = 0; reg < 32; reg++)
1616 		chip->image[reg] = snd_wss_in(chip, reg);
1617 	spin_unlock_irqrestore(&chip->reg_lock, flags);
1618 	if (chip->thinkpad_flag)
1619 		snd_wss_thinkpad_twiddle(chip, 0);
1620 }
1621 
1622 /* lowlevel resume callback for CS4231 */
1623 static void snd_wss_resume(struct snd_wss *chip)
1624 {
1625 	int reg;
1626 	unsigned long flags;
1627 	/* int timeout; */
1628 
1629 	if (chip->thinkpad_flag)
1630 		snd_wss_thinkpad_twiddle(chip, 1);
1631 	snd_wss_mce_up(chip);
1632 	spin_lock_irqsave(&chip->reg_lock, flags);
1633 	for (reg = 0; reg < 32; reg++) {
1634 		switch (reg) {
1635 		case CS4231_VERSION:
1636 			break;
1637 		default:
1638 			snd_wss_out(chip, reg, chip->image[reg]);
1639 			break;
1640 		}
1641 	}
1642 	/* Yamaha needs this to resume properly */
1643 	if (chip->hardware == WSS_HW_OPL3SA2)
1644 		snd_wss_out(chip, CS4231_PLAYBK_FORMAT,
1645 			    chip->image[CS4231_PLAYBK_FORMAT]);
1646 	spin_unlock_irqrestore(&chip->reg_lock, flags);
1647 #if 1
1648 	snd_wss_mce_down(chip);
1649 #else
1650 	/* The following is a workaround to avoid freeze after resume on TP600E.
1651 	   This is the first half of copy of snd_wss_mce_down(), but doesn't
1652 	   include rescheduling.  -- iwai
1653 	   */
1654 	snd_wss_busy_wait(chip);
1655 	spin_lock_irqsave(&chip->reg_lock, flags);
1656 	chip->mce_bit &= ~CS4231_MCE;
1657 	timeout = wss_inb(chip, CS4231P(REGSEL));
1658 	wss_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
1659 	spin_unlock_irqrestore(&chip->reg_lock, flags);
1660 	if (timeout == 0x80)
1661 		snd_printk(KERN_ERR "down [0x%lx]: serious init problem "
1662 			   "- codec still busy\n", chip->port);
1663 	if ((timeout & CS4231_MCE) == 0 ||
1664 	    !(chip->hardware & (WSS_HW_CS4231_MASK | WSS_HW_CS4232_MASK))) {
1665 		return;
1666 	}
1667 	snd_wss_busy_wait(chip);
1668 #endif
1669 }
1670 #endif /* CONFIG_PM */
1671 
1672 static int snd_wss_free(struct snd_wss *chip)
1673 {
1674 	release_and_free_resource(chip->res_port);
1675 	release_and_free_resource(chip->res_cport);
1676 	if (chip->irq >= 0) {
1677 		disable_irq(chip->irq);
1678 		if (!(chip->hwshare & WSS_HWSHARE_IRQ))
1679 			free_irq(chip->irq, (void *) chip);
1680 	}
1681 	if (!(chip->hwshare & WSS_HWSHARE_DMA1) && chip->dma1 >= 0) {
1682 		snd_dma_disable(chip->dma1);
1683 		free_dma(chip->dma1);
1684 	}
1685 	if (!(chip->hwshare & WSS_HWSHARE_DMA2) &&
1686 	    chip->dma2 >= 0 && chip->dma2 != chip->dma1) {
1687 		snd_dma_disable(chip->dma2);
1688 		free_dma(chip->dma2);
1689 	}
1690 	if (chip->timer)
1691 		snd_device_free(chip->card, chip->timer);
1692 	kfree(chip);
1693 	return 0;
1694 }
1695 
1696 static int snd_wss_dev_free(struct snd_device *device)
1697 {
1698 	struct snd_wss *chip = device->device_data;
1699 	return snd_wss_free(chip);
1700 }
1701 
1702 const char *snd_wss_chip_id(struct snd_wss *chip)
1703 {
1704 	switch (chip->hardware) {
1705 	case WSS_HW_CS4231:
1706 		return "CS4231";
1707 	case WSS_HW_CS4231A:
1708 		return "CS4231A";
1709 	case WSS_HW_CS4232:
1710 		return "CS4232";
1711 	case WSS_HW_CS4232A:
1712 		return "CS4232A";
1713 	case WSS_HW_CS4235:
1714 		return "CS4235";
1715 	case WSS_HW_CS4236:
1716 		return "CS4236";
1717 	case WSS_HW_CS4236B:
1718 		return "CS4236B";
1719 	case WSS_HW_CS4237B:
1720 		return "CS4237B";
1721 	case WSS_HW_CS4238B:
1722 		return "CS4238B";
1723 	case WSS_HW_CS4239:
1724 		return "CS4239";
1725 	case WSS_HW_INTERWAVE:
1726 		return "AMD InterWave";
1727 	case WSS_HW_OPL3SA2:
1728 		return chip->card->shortname;
1729 	case WSS_HW_AD1845:
1730 		return "AD1845";
1731 	case WSS_HW_OPTI93X:
1732 		return "OPTi 93x";
1733 	case WSS_HW_AD1847:
1734 		return "AD1847";
1735 	case WSS_HW_AD1848:
1736 		return "AD1848";
1737 	case WSS_HW_CS4248:
1738 		return "CS4248";
1739 	case WSS_HW_CMI8330:
1740 		return "CMI8330/C3D";
1741 	default:
1742 		return "???";
1743 	}
1744 }
1745 EXPORT_SYMBOL(snd_wss_chip_id);
1746 
1747 static int snd_wss_new(struct snd_card *card,
1748 			  unsigned short hardware,
1749 			  unsigned short hwshare,
1750 			  struct snd_wss **rchip)
1751 {
1752 	struct snd_wss *chip;
1753 
1754 	*rchip = NULL;
1755 	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1756 	if (chip == NULL)
1757 		return -ENOMEM;
1758 	chip->hardware = hardware;
1759 	chip->hwshare = hwshare;
1760 
1761 	spin_lock_init(&chip->reg_lock);
1762 	mutex_init(&chip->mce_mutex);
1763 	mutex_init(&chip->open_mutex);
1764 	chip->card = card;
1765 	chip->rate_constraint = snd_wss_xrate;
1766 	chip->set_playback_format = snd_wss_playback_format;
1767 	chip->set_capture_format = snd_wss_capture_format;
1768 	if (chip->hardware == WSS_HW_OPTI93X)
1769 		memcpy(&chip->image, &snd_opti93x_original_image,
1770 		       sizeof(snd_opti93x_original_image));
1771 	else
1772 		memcpy(&chip->image, &snd_wss_original_image,
1773 		       sizeof(snd_wss_original_image));
1774 	if (chip->hardware & WSS_HW_AD1848_MASK) {
1775 		chip->image[CS4231_PIN_CTRL] = 0;
1776 		chip->image[CS4231_TEST_INIT] = 0;
1777 	}
1778 
1779 	*rchip = chip;
1780 	return 0;
1781 }
1782 
1783 int snd_wss_create(struct snd_card *card,
1784 		      unsigned long port,
1785 		      unsigned long cport,
1786 		      int irq, int dma1, int dma2,
1787 		      unsigned short hardware,
1788 		      unsigned short hwshare,
1789 		      struct snd_wss **rchip)
1790 {
1791 	static struct snd_device_ops ops = {
1792 		.dev_free =	snd_wss_dev_free,
1793 	};
1794 	struct snd_wss *chip;
1795 	int err;
1796 
1797 	err = snd_wss_new(card, hardware, hwshare, &chip);
1798 	if (err < 0)
1799 		return err;
1800 
1801 	chip->irq = -1;
1802 	chip->dma1 = -1;
1803 	chip->dma2 = -1;
1804 
1805 	chip->res_port = request_region(port, 4, "WSS");
1806 	if (!chip->res_port) {
1807 		snd_printk(KERN_ERR "wss: can't grab port 0x%lx\n", port);
1808 		snd_wss_free(chip);
1809 		return -EBUSY;
1810 	}
1811 	chip->port = port;
1812 	if ((long)cport >= 0) {
1813 		chip->res_cport = request_region(cport, 8, "CS4232 Control");
1814 		if (!chip->res_cport) {
1815 			snd_printk(KERN_ERR
1816 				"wss: can't grab control port 0x%lx\n", cport);
1817 			snd_wss_free(chip);
1818 			return -ENODEV;
1819 		}
1820 	}
1821 	chip->cport = cport;
1822 	if (!(hwshare & WSS_HWSHARE_IRQ))
1823 		if (request_irq(irq, snd_wss_interrupt, 0,
1824 				"WSS", (void *) chip)) {
1825 			snd_printk(KERN_ERR "wss: can't grab IRQ %d\n", irq);
1826 			snd_wss_free(chip);
1827 			return -EBUSY;
1828 		}
1829 	chip->irq = irq;
1830 	if (!(hwshare & WSS_HWSHARE_DMA1) && request_dma(dma1, "WSS - 1")) {
1831 		snd_printk(KERN_ERR "wss: can't grab DMA1 %d\n", dma1);
1832 		snd_wss_free(chip);
1833 		return -EBUSY;
1834 	}
1835 	chip->dma1 = dma1;
1836 	if (!(hwshare & WSS_HWSHARE_DMA2) && dma1 != dma2 &&
1837 	      dma2 >= 0 && request_dma(dma2, "WSS - 2")) {
1838 		snd_printk(KERN_ERR "wss: can't grab DMA2 %d\n", dma2);
1839 		snd_wss_free(chip);
1840 		return -EBUSY;
1841 	}
1842 	if (dma1 == dma2 || dma2 < 0) {
1843 		chip->single_dma = 1;
1844 		chip->dma2 = chip->dma1;
1845 	} else
1846 		chip->dma2 = dma2;
1847 
1848 	if (hardware == WSS_HW_THINKPAD) {
1849 		chip->thinkpad_flag = 1;
1850 		chip->hardware = WSS_HW_DETECT; /* reset */
1851 		snd_wss_thinkpad_twiddle(chip, 1);
1852 	}
1853 
1854 	/* global setup */
1855 	if (snd_wss_probe(chip) < 0) {
1856 		snd_wss_free(chip);
1857 		return -ENODEV;
1858 	}
1859 	snd_wss_init(chip);
1860 
1861 #if 0
1862 	if (chip->hardware & WSS_HW_CS4232_MASK) {
1863 		if (chip->res_cport == NULL)
1864 			snd_printk(KERN_ERR "CS4232 control port features are "
1865 				   "not accessible\n");
1866 	}
1867 #endif
1868 
1869 	/* Register device */
1870 	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
1871 	if (err < 0) {
1872 		snd_wss_free(chip);
1873 		return err;
1874 	}
1875 
1876 #ifdef CONFIG_PM
1877 	/* Power Management */
1878 	chip->suspend = snd_wss_suspend;
1879 	chip->resume = snd_wss_resume;
1880 #endif
1881 
1882 	*rchip = chip;
1883 	return 0;
1884 }
1885 EXPORT_SYMBOL(snd_wss_create);
1886 
1887 static const struct snd_pcm_ops snd_wss_playback_ops = {
1888 	.open =		snd_wss_playback_open,
1889 	.close =	snd_wss_playback_close,
1890 	.ioctl =	snd_pcm_lib_ioctl,
1891 	.hw_params =	snd_wss_playback_hw_params,
1892 	.hw_free =	snd_wss_playback_hw_free,
1893 	.prepare =	snd_wss_playback_prepare,
1894 	.trigger =	snd_wss_trigger,
1895 	.pointer =	snd_wss_playback_pointer,
1896 };
1897 
1898 static const struct snd_pcm_ops snd_wss_capture_ops = {
1899 	.open =		snd_wss_capture_open,
1900 	.close =	snd_wss_capture_close,
1901 	.ioctl =	snd_pcm_lib_ioctl,
1902 	.hw_params =	snd_wss_capture_hw_params,
1903 	.hw_free =	snd_wss_capture_hw_free,
1904 	.prepare =	snd_wss_capture_prepare,
1905 	.trigger =	snd_wss_trigger,
1906 	.pointer =	snd_wss_capture_pointer,
1907 };
1908 
1909 int snd_wss_pcm(struct snd_wss *chip, int device)
1910 {
1911 	struct snd_pcm *pcm;
1912 	int err;
1913 
1914 	err = snd_pcm_new(chip->card, "WSS", device, 1, 1, &pcm);
1915 	if (err < 0)
1916 		return err;
1917 
1918 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_wss_playback_ops);
1919 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_wss_capture_ops);
1920 
1921 	/* global setup */
1922 	pcm->private_data = chip;
1923 	pcm->info_flags = 0;
1924 	if (chip->single_dma)
1925 		pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
1926 	if (chip->hardware != WSS_HW_INTERWAVE)
1927 		pcm->info_flags |= SNDRV_PCM_INFO_JOINT_DUPLEX;
1928 	strcpy(pcm->name, snd_wss_chip_id(chip));
1929 
1930 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1931 					      chip->card->dev,
1932 					      64*1024, chip->dma1 > 3 || chip->dma2 > 3 ? 128*1024 : 64*1024);
1933 
1934 	chip->pcm = pcm;
1935 	return 0;
1936 }
1937 EXPORT_SYMBOL(snd_wss_pcm);
1938 
1939 static void snd_wss_timer_free(struct snd_timer *timer)
1940 {
1941 	struct snd_wss *chip = timer->private_data;
1942 	chip->timer = NULL;
1943 }
1944 
1945 int snd_wss_timer(struct snd_wss *chip, int device)
1946 {
1947 	struct snd_timer *timer;
1948 	struct snd_timer_id tid;
1949 	int err;
1950 
1951 	/* Timer initialization */
1952 	tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1953 	tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1954 	tid.card = chip->card->number;
1955 	tid.device = device;
1956 	tid.subdevice = 0;
1957 	if ((err = snd_timer_new(chip->card, "CS4231", &tid, &timer)) < 0)
1958 		return err;
1959 	strcpy(timer->name, snd_wss_chip_id(chip));
1960 	timer->private_data = chip;
1961 	timer->private_free = snd_wss_timer_free;
1962 	timer->hw = snd_wss_timer_table;
1963 	chip->timer = timer;
1964 	return 0;
1965 }
1966 EXPORT_SYMBOL(snd_wss_timer);
1967 
1968 /*
1969  *  MIXER part
1970  */
1971 
1972 static int snd_wss_info_mux(struct snd_kcontrol *kcontrol,
1973 			    struct snd_ctl_elem_info *uinfo)
1974 {
1975 	static const char * const texts[4] = {
1976 		"Line", "Aux", "Mic", "Mix"
1977 	};
1978 	static const char * const opl3sa_texts[4] = {
1979 		"Line", "CD", "Mic", "Mix"
1980 	};
1981 	static const char * const gusmax_texts[4] = {
1982 		"Line", "Synth", "Mic", "Mix"
1983 	};
1984 	const char * const *ptexts = texts;
1985 	struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
1986 
1987 	if (snd_BUG_ON(!chip->card))
1988 		return -EINVAL;
1989 	if (!strcmp(chip->card->driver, "GUS MAX"))
1990 		ptexts = gusmax_texts;
1991 	switch (chip->hardware) {
1992 	case WSS_HW_INTERWAVE:
1993 		ptexts = gusmax_texts;
1994 		break;
1995 	case WSS_HW_OPTI93X:
1996 	case WSS_HW_OPL3SA2:
1997 		ptexts = opl3sa_texts;
1998 		break;
1999 	}
2000 	return snd_ctl_enum_info(uinfo, 2, 4, ptexts);
2001 }
2002 
2003 static int snd_wss_get_mux(struct snd_kcontrol *kcontrol,
2004 			   struct snd_ctl_elem_value *ucontrol)
2005 {
2006 	struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
2007 	unsigned long flags;
2008 
2009 	spin_lock_irqsave(&chip->reg_lock, flags);
2010 	ucontrol->value.enumerated.item[0] = (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
2011 	ucontrol->value.enumerated.item[1] = (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
2012 	spin_unlock_irqrestore(&chip->reg_lock, flags);
2013 	return 0;
2014 }
2015 
2016 static int snd_wss_put_mux(struct snd_kcontrol *kcontrol,
2017 			   struct snd_ctl_elem_value *ucontrol)
2018 {
2019 	struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
2020 	unsigned long flags;
2021 	unsigned short left, right;
2022 	int change;
2023 
2024 	if (ucontrol->value.enumerated.item[0] > 3 ||
2025 	    ucontrol->value.enumerated.item[1] > 3)
2026 		return -EINVAL;
2027 	left = ucontrol->value.enumerated.item[0] << 6;
2028 	right = ucontrol->value.enumerated.item[1] << 6;
2029 	spin_lock_irqsave(&chip->reg_lock, flags);
2030 	left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
2031 	right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
2032 	change = left != chip->image[CS4231_LEFT_INPUT] ||
2033 		 right != chip->image[CS4231_RIGHT_INPUT];
2034 	snd_wss_out(chip, CS4231_LEFT_INPUT, left);
2035 	snd_wss_out(chip, CS4231_RIGHT_INPUT, right);
2036 	spin_unlock_irqrestore(&chip->reg_lock, flags);
2037 	return change;
2038 }
2039 
2040 int snd_wss_info_single(struct snd_kcontrol *kcontrol,
2041 			struct snd_ctl_elem_info *uinfo)
2042 {
2043 	int mask = (kcontrol->private_value >> 16) & 0xff;
2044 
2045 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
2046 	uinfo->count = 1;
2047 	uinfo->value.integer.min = 0;
2048 	uinfo->value.integer.max = mask;
2049 	return 0;
2050 }
2051 EXPORT_SYMBOL(snd_wss_info_single);
2052 
2053 int snd_wss_get_single(struct snd_kcontrol *kcontrol,
2054 		       struct snd_ctl_elem_value *ucontrol)
2055 {
2056 	struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
2057 	unsigned long flags;
2058 	int reg = kcontrol->private_value & 0xff;
2059 	int shift = (kcontrol->private_value >> 8) & 0xff;
2060 	int mask = (kcontrol->private_value >> 16) & 0xff;
2061 	int invert = (kcontrol->private_value >> 24) & 0xff;
2062 
2063 	spin_lock_irqsave(&chip->reg_lock, flags);
2064 	ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
2065 	spin_unlock_irqrestore(&chip->reg_lock, flags);
2066 	if (invert)
2067 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
2068 	return 0;
2069 }
2070 EXPORT_SYMBOL(snd_wss_get_single);
2071 
2072 int snd_wss_put_single(struct snd_kcontrol *kcontrol,
2073 		       struct snd_ctl_elem_value *ucontrol)
2074 {
2075 	struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
2076 	unsigned long flags;
2077 	int reg = kcontrol->private_value & 0xff;
2078 	int shift = (kcontrol->private_value >> 8) & 0xff;
2079 	int mask = (kcontrol->private_value >> 16) & 0xff;
2080 	int invert = (kcontrol->private_value >> 24) & 0xff;
2081 	int change;
2082 	unsigned short val;
2083 
2084 	val = (ucontrol->value.integer.value[0] & mask);
2085 	if (invert)
2086 		val = mask - val;
2087 	val <<= shift;
2088 	spin_lock_irqsave(&chip->reg_lock, flags);
2089 	val = (chip->image[reg] & ~(mask << shift)) | val;
2090 	change = val != chip->image[reg];
2091 	snd_wss_out(chip, reg, val);
2092 	spin_unlock_irqrestore(&chip->reg_lock, flags);
2093 	return change;
2094 }
2095 EXPORT_SYMBOL(snd_wss_put_single);
2096 
2097 int snd_wss_info_double(struct snd_kcontrol *kcontrol,
2098 			struct snd_ctl_elem_info *uinfo)
2099 {
2100 	int mask = (kcontrol->private_value >> 24) & 0xff;
2101 
2102 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
2103 	uinfo->count = 2;
2104 	uinfo->value.integer.min = 0;
2105 	uinfo->value.integer.max = mask;
2106 	return 0;
2107 }
2108 EXPORT_SYMBOL(snd_wss_info_double);
2109 
2110 int snd_wss_get_double(struct snd_kcontrol *kcontrol,
2111 		       struct snd_ctl_elem_value *ucontrol)
2112 {
2113 	struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
2114 	unsigned long flags;
2115 	int left_reg = kcontrol->private_value & 0xff;
2116 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
2117 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
2118 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
2119 	int mask = (kcontrol->private_value >> 24) & 0xff;
2120 	int invert = (kcontrol->private_value >> 22) & 1;
2121 
2122 	spin_lock_irqsave(&chip->reg_lock, flags);
2123 	ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
2124 	ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
2125 	spin_unlock_irqrestore(&chip->reg_lock, flags);
2126 	if (invert) {
2127 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
2128 		ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
2129 	}
2130 	return 0;
2131 }
2132 EXPORT_SYMBOL(snd_wss_get_double);
2133 
2134 int snd_wss_put_double(struct snd_kcontrol *kcontrol,
2135 		       struct snd_ctl_elem_value *ucontrol)
2136 {
2137 	struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
2138 	unsigned long flags;
2139 	int left_reg = kcontrol->private_value & 0xff;
2140 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
2141 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
2142 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
2143 	int mask = (kcontrol->private_value >> 24) & 0xff;
2144 	int invert = (kcontrol->private_value >> 22) & 1;
2145 	int change;
2146 	unsigned short val1, val2;
2147 
2148 	val1 = ucontrol->value.integer.value[0] & mask;
2149 	val2 = ucontrol->value.integer.value[1] & mask;
2150 	if (invert) {
2151 		val1 = mask - val1;
2152 		val2 = mask - val2;
2153 	}
2154 	val1 <<= shift_left;
2155 	val2 <<= shift_right;
2156 	spin_lock_irqsave(&chip->reg_lock, flags);
2157 	if (left_reg != right_reg) {
2158 		val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
2159 		val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
2160 		change = val1 != chip->image[left_reg] ||
2161 			 val2 != chip->image[right_reg];
2162 		snd_wss_out(chip, left_reg, val1);
2163 		snd_wss_out(chip, right_reg, val2);
2164 	} else {
2165 		mask = (mask << shift_left) | (mask << shift_right);
2166 		val1 = (chip->image[left_reg] & ~mask) | val1 | val2;
2167 		change = val1 != chip->image[left_reg];
2168 		snd_wss_out(chip, left_reg, val1);
2169 	}
2170 	spin_unlock_irqrestore(&chip->reg_lock, flags);
2171 	return change;
2172 }
2173 EXPORT_SYMBOL(snd_wss_put_double);
2174 
2175 static const DECLARE_TLV_DB_SCALE(db_scale_6bit, -9450, 150, 0);
2176 static const DECLARE_TLV_DB_SCALE(db_scale_5bit_12db_max, -3450, 150, 0);
2177 static const DECLARE_TLV_DB_SCALE(db_scale_rec_gain, 0, 150, 0);
2178 static const DECLARE_TLV_DB_SCALE(db_scale_4bit, -4500, 300, 0);
2179 
2180 static struct snd_kcontrol_new snd_wss_controls[] = {
2181 WSS_DOUBLE("PCM Playback Switch", 0,
2182 		CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
2183 WSS_DOUBLE_TLV("PCM Playback Volume", 0,
2184 		CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 0, 0, 63, 1,
2185 		db_scale_6bit),
2186 WSS_DOUBLE("Aux Playback Switch", 0,
2187 		CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
2188 WSS_DOUBLE_TLV("Aux Playback Volume", 0,
2189 		CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1,
2190 		db_scale_5bit_12db_max),
2191 WSS_DOUBLE("Aux Playback Switch", 1,
2192 		CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
2193 WSS_DOUBLE_TLV("Aux Playback Volume", 1,
2194 		CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1,
2195 		db_scale_5bit_12db_max),
2196 WSS_DOUBLE_TLV("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT,
2197 		0, 0, 15, 0, db_scale_rec_gain),
2198 {
2199 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2200 	.name = "Capture Source",
2201 	.info = snd_wss_info_mux,
2202 	.get = snd_wss_get_mux,
2203 	.put = snd_wss_put_mux,
2204 },
2205 WSS_DOUBLE("Mic Boost (+20dB)", 0,
2206 		CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5, 1, 0),
2207 WSS_SINGLE("Loopback Capture Switch", 0,
2208 		CS4231_LOOPBACK, 0, 1, 0),
2209 WSS_SINGLE_TLV("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1,
2210 		db_scale_6bit),
2211 WSS_DOUBLE("Line Playback Switch", 0,
2212 		CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
2213 WSS_DOUBLE_TLV("Line Playback Volume", 0,
2214 		CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 0, 0, 31, 1,
2215 		db_scale_5bit_12db_max),
2216 WSS_SINGLE("Beep Playback Switch", 0,
2217 		CS4231_MONO_CTRL, 7, 1, 1),
2218 WSS_SINGLE_TLV("Beep Playback Volume", 0,
2219 		CS4231_MONO_CTRL, 0, 15, 1,
2220 		db_scale_4bit),
2221 WSS_SINGLE("Mono Output Playback Switch", 0,
2222 		CS4231_MONO_CTRL, 6, 1, 1),
2223 WSS_SINGLE("Beep Bypass Playback Switch", 0,
2224 		CS4231_MONO_CTRL, 5, 1, 0),
2225 };
2226 
2227 int snd_wss_mixer(struct snd_wss *chip)
2228 {
2229 	struct snd_card *card;
2230 	unsigned int idx;
2231 	int err;
2232 	int count = ARRAY_SIZE(snd_wss_controls);
2233 
2234 	if (snd_BUG_ON(!chip || !chip->pcm))
2235 		return -EINVAL;
2236 
2237 	card = chip->card;
2238 
2239 	strcpy(card->mixername, chip->pcm->name);
2240 
2241 	/* Use only the first 11 entries on AD1848 */
2242 	if (chip->hardware & WSS_HW_AD1848_MASK)
2243 		count = 11;
2244 	/* There is no loopback on OPTI93X */
2245 	else if (chip->hardware == WSS_HW_OPTI93X)
2246 		count = 9;
2247 
2248 	for (idx = 0; idx < count; idx++) {
2249 		err = snd_ctl_add(card,
2250 				snd_ctl_new1(&snd_wss_controls[idx],
2251 					     chip));
2252 		if (err < 0)
2253 			return err;
2254 	}
2255 	return 0;
2256 }
2257 EXPORT_SYMBOL(snd_wss_mixer);
2258 
2259 const struct snd_pcm_ops *snd_wss_get_pcm_ops(int direction)
2260 {
2261 	return direction == SNDRV_PCM_STREAM_PLAYBACK ?
2262 		&snd_wss_playback_ops : &snd_wss_capture_ops;
2263 }
2264 EXPORT_SYMBOL(snd_wss_get_pcm_ops);
2265