xref: /openbmc/linux/sound/isa/wss/wss_lib.c (revision 9ac8d3fb)
1 /*
2  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
3  *  Routines for control of CS4231(A)/CS4232/InterWave & compatible chips
4  *
5  *  Bugs:
6  *     - sometimes record brokes playback with WSS portion of
7  *       Yamaha OPL3-SA3 chip
8  *     - CS4231 (GUS MAX) - still trouble with occasional noises
9  *			  - broken initialization?
10  *
11  *   This program is free software; you can redistribute it and/or modify
12  *   it under the terms of the GNU General Public License as published by
13  *   the Free Software Foundation; either version 2 of the License, or
14  *   (at your option) any later version.
15  *
16  *   This program is distributed in the hope that it will be useful,
17  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
18  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19  *   GNU General Public License for more details.
20  *
21  *   You should have received a copy of the GNU General Public License
22  *   along with this program; if not, write to the Free Software
23  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
24  *
25  */
26 
27 #include <linux/delay.h>
28 #include <linux/pm.h>
29 #include <linux/init.h>
30 #include <linux/interrupt.h>
31 #include <linux/slab.h>
32 #include <linux/ioport.h>
33 #include <sound/core.h>
34 #include <sound/wss.h>
35 #include <sound/pcm_params.h>
36 #include <sound/tlv.h>
37 
38 #include <asm/io.h>
39 #include <asm/dma.h>
40 #include <asm/irq.h>
41 
42 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
43 MODULE_DESCRIPTION("Routines for control of CS4231(A)/CS4232/InterWave & compatible chips");
44 MODULE_LICENSE("GPL");
45 
46 #if 0
47 #define SNDRV_DEBUG_MCE
48 #endif
49 
50 /*
51  *  Some variables
52  */
53 
54 static unsigned char freq_bits[14] = {
55 	/* 5510 */	0x00 | CS4231_XTAL2,
56 	/* 6620 */	0x0E | CS4231_XTAL2,
57 	/* 8000 */	0x00 | CS4231_XTAL1,
58 	/* 9600 */	0x0E | CS4231_XTAL1,
59 	/* 11025 */	0x02 | CS4231_XTAL2,
60 	/* 16000 */	0x02 | CS4231_XTAL1,
61 	/* 18900 */	0x04 | CS4231_XTAL2,
62 	/* 22050 */	0x06 | CS4231_XTAL2,
63 	/* 27042 */	0x04 | CS4231_XTAL1,
64 	/* 32000 */	0x06 | CS4231_XTAL1,
65 	/* 33075 */	0x0C | CS4231_XTAL2,
66 	/* 37800 */	0x08 | CS4231_XTAL2,
67 	/* 44100 */	0x0A | CS4231_XTAL2,
68 	/* 48000 */	0x0C | CS4231_XTAL1
69 };
70 
71 static unsigned int rates[14] = {
72 	5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
73 	27042, 32000, 33075, 37800, 44100, 48000
74 };
75 
76 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
77 	.count = ARRAY_SIZE(rates),
78 	.list = rates,
79 	.mask = 0,
80 };
81 
82 static int snd_wss_xrate(struct snd_pcm_runtime *runtime)
83 {
84 	return snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
85 					  &hw_constraints_rates);
86 }
87 
88 static unsigned char snd_wss_original_image[32] =
89 {
90 	0x00,			/* 00/00 - lic */
91 	0x00,			/* 01/01 - ric */
92 	0x9f,			/* 02/02 - la1ic */
93 	0x9f,			/* 03/03 - ra1ic */
94 	0x9f,			/* 04/04 - la2ic */
95 	0x9f,			/* 05/05 - ra2ic */
96 	0xbf,			/* 06/06 - loc */
97 	0xbf,			/* 07/07 - roc */
98 	0x20,			/* 08/08 - pdfr */
99 	CS4231_AUTOCALIB,	/* 09/09 - ic */
100 	0x00,			/* 0a/10 - pc */
101 	0x00,			/* 0b/11 - ti */
102 	CS4231_MODE2,		/* 0c/12 - mi */
103 	0xfc,			/* 0d/13 - lbc */
104 	0x00,			/* 0e/14 - pbru */
105 	0x00,			/* 0f/15 - pbrl */
106 	0x80,			/* 10/16 - afei */
107 	0x01,			/* 11/17 - afeii */
108 	0x9f,			/* 12/18 - llic */
109 	0x9f,			/* 13/19 - rlic */
110 	0x00,			/* 14/20 - tlb */
111 	0x00,			/* 15/21 - thb */
112 	0x00,			/* 16/22 - la3mic/reserved */
113 	0x00,			/* 17/23 - ra3mic/reserved */
114 	0x00,			/* 18/24 - afs */
115 	0x00,			/* 19/25 - lamoc/version */
116 	0xcf,			/* 1a/26 - mioc */
117 	0x00,			/* 1b/27 - ramoc/reserved */
118 	0x20,			/* 1c/28 - cdfr */
119 	0x00,			/* 1d/29 - res4 */
120 	0x00,			/* 1e/30 - cbru */
121 	0x00,			/* 1f/31 - cbrl */
122 };
123 
124 static unsigned char snd_opti93x_original_image[32] =
125 {
126 	0x00,		/* 00/00 - l_mixout_outctrl */
127 	0x00,		/* 01/01 - r_mixout_outctrl */
128 	0x88,		/* 02/02 - l_cd_inctrl */
129 	0x88,		/* 03/03 - r_cd_inctrl */
130 	0x88,		/* 04/04 - l_a1/fm_inctrl */
131 	0x88,		/* 05/05 - r_a1/fm_inctrl */
132 	0x80,		/* 06/06 - l_dac_inctrl */
133 	0x80,		/* 07/07 - r_dac_inctrl */
134 	0x00,		/* 08/08 - ply_dataform_reg */
135 	0x00,		/* 09/09 - if_conf */
136 	0x00,		/* 0a/10 - pin_ctrl */
137 	0x00,		/* 0b/11 - err_init_reg */
138 	0x0a,		/* 0c/12 - id_reg */
139 	0x00,		/* 0d/13 - reserved */
140 	0x00,		/* 0e/14 - ply_upcount_reg */
141 	0x00,		/* 0f/15 - ply_lowcount_reg */
142 	0x88,		/* 10/16 - reserved/l_a1_inctrl */
143 	0x88,		/* 11/17 - reserved/r_a1_inctrl */
144 	0x88,		/* 12/18 - l_line_inctrl */
145 	0x88,		/* 13/19 - r_line_inctrl */
146 	0x88,		/* 14/20 - l_mic_inctrl */
147 	0x88,		/* 15/21 - r_mic_inctrl */
148 	0x80,		/* 16/22 - l_out_outctrl */
149 	0x80,		/* 17/23 - r_out_outctrl */
150 	0x00,		/* 18/24 - reserved */
151 	0x00,		/* 19/25 - reserved */
152 	0x00,		/* 1a/26 - reserved */
153 	0x00,		/* 1b/27 - reserved */
154 	0x00,		/* 1c/28 - cap_dataform_reg */
155 	0x00,		/* 1d/29 - reserved */
156 	0x00,		/* 1e/30 - cap_upcount_reg */
157 	0x00		/* 1f/31 - cap_lowcount_reg */
158 };
159 
160 /*
161  *  Basic I/O functions
162  */
163 
164 static inline void wss_outb(struct snd_wss *chip, u8 offset, u8 val)
165 {
166 	outb(val, chip->port + offset);
167 }
168 
169 static inline u8 wss_inb(struct snd_wss *chip, u8 offset)
170 {
171 	return inb(chip->port + offset);
172 }
173 
174 static void snd_wss_wait(struct snd_wss *chip)
175 {
176 	int timeout;
177 
178 	for (timeout = 250;
179 	     timeout > 0 && (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
180 	     timeout--)
181 		udelay(100);
182 }
183 
184 static void snd_wss_outm(struct snd_wss *chip, unsigned char reg,
185 			    unsigned char mask, unsigned char value)
186 {
187 	unsigned char tmp = (chip->image[reg] & mask) | value;
188 
189 	snd_wss_wait(chip);
190 #ifdef CONFIG_SND_DEBUG
191 	if (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
192 		snd_printk("outm: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
193 #endif
194 	chip->image[reg] = tmp;
195 	if (!chip->calibrate_mute) {
196 		wss_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
197 		wmb();
198 		wss_outb(chip, CS4231P(REG), tmp);
199 		mb();
200 	}
201 }
202 
203 static void snd_wss_dout(struct snd_wss *chip, unsigned char reg,
204 			 unsigned char value)
205 {
206 	int timeout;
207 
208 	for (timeout = 250;
209 	     timeout > 0 && (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
210 	     timeout--)
211 		udelay(10);
212 	wss_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
213 	wss_outb(chip, CS4231P(REG), value);
214 	mb();
215 }
216 
217 void snd_wss_out(struct snd_wss *chip, unsigned char reg, unsigned char value)
218 {
219 	snd_wss_wait(chip);
220 #ifdef CONFIG_SND_DEBUG
221 	if (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
222 		snd_printk("out: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
223 #endif
224 	wss_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
225 	wss_outb(chip, CS4231P(REG), value);
226 	chip->image[reg] = value;
227 	mb();
228 	snd_printdd("codec out - reg 0x%x = 0x%x\n",
229 			chip->mce_bit | reg, value);
230 }
231 EXPORT_SYMBOL(snd_wss_out);
232 
233 unsigned char snd_wss_in(struct snd_wss *chip, unsigned char reg)
234 {
235 	snd_wss_wait(chip);
236 #ifdef CONFIG_SND_DEBUG
237 	if (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
238 		snd_printk("in: auto calibration time out - reg = 0x%x\n", reg);
239 #endif
240 	wss_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
241 	mb();
242 	return wss_inb(chip, CS4231P(REG));
243 }
244 EXPORT_SYMBOL(snd_wss_in);
245 
246 void snd_cs4236_ext_out(struct snd_wss *chip, unsigned char reg,
247 			unsigned char val)
248 {
249 	wss_outb(chip, CS4231P(REGSEL), chip->mce_bit | 0x17);
250 	wss_outb(chip, CS4231P(REG),
251 		 reg | (chip->image[CS4236_EXT_REG] & 0x01));
252 	wss_outb(chip, CS4231P(REG), val);
253 	chip->eimage[CS4236_REG(reg)] = val;
254 #if 0
255 	printk("ext out : reg = 0x%x, val = 0x%x\n", reg, val);
256 #endif
257 }
258 EXPORT_SYMBOL(snd_cs4236_ext_out);
259 
260 unsigned char snd_cs4236_ext_in(struct snd_wss *chip, unsigned char reg)
261 {
262 	wss_outb(chip, CS4231P(REGSEL), chip->mce_bit | 0x17);
263 	wss_outb(chip, CS4231P(REG),
264 		 reg | (chip->image[CS4236_EXT_REG] & 0x01));
265 #if 1
266 	return wss_inb(chip, CS4231P(REG));
267 #else
268 	{
269 		unsigned char res;
270 		res = wss_inb(chip, CS4231P(REG));
271 		printk("ext in : reg = 0x%x, val = 0x%x\n", reg, res);
272 		return res;
273 	}
274 #endif
275 }
276 EXPORT_SYMBOL(snd_cs4236_ext_in);
277 
278 #if 0
279 
280 static void snd_wss_debug(struct snd_wss *chip)
281 {
282 	printk(KERN_DEBUG
283 		"CS4231 REGS:      INDEX = 0x%02x  "
284 		"                 STATUS = 0x%02x\n",
285 					wss_inb(chip, CS4231P(REGSEL)),
286 					wss_inb(chip, CS4231P(STATUS)));
287 	printk(KERN_DEBUG
288 		"  0x00: left input      = 0x%02x  "
289 		"  0x10: alt 1 (CFIG 2)  = 0x%02x\n",
290 					snd_wss_in(chip, 0x00),
291 					snd_wss_in(chip, 0x10));
292 	printk(KERN_DEBUG
293 		"  0x01: right input     = 0x%02x  "
294 		"  0x11: alt 2 (CFIG 3)  = 0x%02x\n",
295 					snd_wss_in(chip, 0x01),
296 					snd_wss_in(chip, 0x11));
297 	printk(KERN_DEBUG
298 		"  0x02: GF1 left input  = 0x%02x  "
299 		"  0x12: left line in    = 0x%02x\n",
300 					snd_wss_in(chip, 0x02),
301 					snd_wss_in(chip, 0x12));
302 	printk(KERN_DEBUG
303 		"  0x03: GF1 right input = 0x%02x  "
304 		"  0x13: right line in   = 0x%02x\n",
305 					snd_wss_in(chip, 0x03),
306 					snd_wss_in(chip, 0x13));
307 	printk(KERN_DEBUG
308 		"  0x04: CD left input   = 0x%02x  "
309 		"  0x14: timer low       = 0x%02x\n",
310 					snd_wss_in(chip, 0x04),
311 					snd_wss_in(chip, 0x14));
312 	printk(KERN_DEBUG
313 		"  0x05: CD right input  = 0x%02x  "
314 		"  0x15: timer high      = 0x%02x\n",
315 					snd_wss_in(chip, 0x05),
316 					snd_wss_in(chip, 0x15));
317 	printk(KERN_DEBUG
318 		"  0x06: left output     = 0x%02x  "
319 		"  0x16: left MIC (PnP)  = 0x%02x\n",
320 					snd_wss_in(chip, 0x06),
321 					snd_wss_in(chip, 0x16));
322 	printk(KERN_DEBUG
323 		"  0x07: right output    = 0x%02x  "
324 		"  0x17: right MIC (PnP) = 0x%02x\n",
325 					snd_wss_in(chip, 0x07),
326 					snd_wss_in(chip, 0x17));
327 	printk(KERN_DEBUG
328 		"  0x08: playback format = 0x%02x  "
329 		"  0x18: IRQ status      = 0x%02x\n",
330 					snd_wss_in(chip, 0x08),
331 					snd_wss_in(chip, 0x18));
332 	printk(KERN_DEBUG
333 		"  0x09: iface (CFIG 1)  = 0x%02x  "
334 		"  0x19: left line out   = 0x%02x\n",
335 					snd_wss_in(chip, 0x09),
336 					snd_wss_in(chip, 0x19));
337 	printk(KERN_DEBUG
338 		"  0x0a: pin control     = 0x%02x  "
339 		"  0x1a: mono control    = 0x%02x\n",
340 					snd_wss_in(chip, 0x0a),
341 					snd_wss_in(chip, 0x1a));
342 	printk(KERN_DEBUG
343 		"  0x0b: init & status   = 0x%02x  "
344 		"  0x1b: right line out  = 0x%02x\n",
345 					snd_wss_in(chip, 0x0b),
346 					snd_wss_in(chip, 0x1b));
347 	printk(KERN_DEBUG
348 		"  0x0c: revision & mode = 0x%02x  "
349 		"  0x1c: record format   = 0x%02x\n",
350 					snd_wss_in(chip, 0x0c),
351 					snd_wss_in(chip, 0x1c));
352 	printk(KERN_DEBUG
353 		"  0x0d: loopback        = 0x%02x  "
354 		"  0x1d: var freq (PnP)  = 0x%02x\n",
355 					snd_wss_in(chip, 0x0d),
356 					snd_wss_in(chip, 0x1d));
357 	printk(KERN_DEBUG
358 		"  0x0e: ply upr count   = 0x%02x  "
359 		"  0x1e: ply lwr count   = 0x%02x\n",
360 					snd_wss_in(chip, 0x0e),
361 					snd_wss_in(chip, 0x1e));
362 	printk(KERN_DEBUG
363 		"  0x0f: rec upr count   = 0x%02x  "
364 		"  0x1f: rec lwr count   = 0x%02x\n",
365 					snd_wss_in(chip, 0x0f),
366 					snd_wss_in(chip, 0x1f));
367 }
368 
369 #endif
370 
371 /*
372  *  CS4231 detection / MCE routines
373  */
374 
375 static void snd_wss_busy_wait(struct snd_wss *chip)
376 {
377 	int timeout;
378 
379 	/* huh.. looks like this sequence is proper for CS4231A chip (GUS MAX) */
380 	for (timeout = 5; timeout > 0; timeout--)
381 		wss_inb(chip, CS4231P(REGSEL));
382 	/* end of cleanup sequence */
383 	for (timeout = 25000;
384 	     timeout > 0 && (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
385 	     timeout--)
386 		udelay(10);
387 }
388 
389 void snd_wss_mce_up(struct snd_wss *chip)
390 {
391 	unsigned long flags;
392 	int timeout;
393 
394 	snd_wss_wait(chip);
395 #ifdef CONFIG_SND_DEBUG
396 	if (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
397 		snd_printk("mce_up - auto calibration time out (0)\n");
398 #endif
399 	spin_lock_irqsave(&chip->reg_lock, flags);
400 	chip->mce_bit |= CS4231_MCE;
401 	timeout = wss_inb(chip, CS4231P(REGSEL));
402 	if (timeout == 0x80)
403 		snd_printk("mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
404 	if (!(timeout & CS4231_MCE))
405 		wss_outb(chip, CS4231P(REGSEL),
406 			 chip->mce_bit | (timeout & 0x1f));
407 	spin_unlock_irqrestore(&chip->reg_lock, flags);
408 }
409 EXPORT_SYMBOL(snd_wss_mce_up);
410 
411 void snd_wss_mce_down(struct snd_wss *chip)
412 {
413 	unsigned long flags;
414 	unsigned long end_time;
415 	int timeout;
416 	int hw_mask = WSS_HW_CS4231_MASK | WSS_HW_CS4232_MASK | WSS_HW_AD1848;
417 
418 	snd_wss_busy_wait(chip);
419 
420 #ifdef CONFIG_SND_DEBUG
421 	if (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
422 		snd_printk("mce_down [0x%lx] - auto calibration time out (0)\n", (long)CS4231P(REGSEL));
423 #endif
424 	spin_lock_irqsave(&chip->reg_lock, flags);
425 	chip->mce_bit &= ~CS4231_MCE;
426 	timeout = wss_inb(chip, CS4231P(REGSEL));
427 	wss_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
428 	spin_unlock_irqrestore(&chip->reg_lock, flags);
429 	if (timeout == 0x80)
430 		snd_printk("mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
431 	if ((timeout & CS4231_MCE) == 0 || !(chip->hardware & hw_mask))
432 		return;
433 
434 	/*
435 	 * Wait for (possible -- during init auto-calibration may not be set)
436 	 * calibration process to start. Needs upto 5 sample periods on AD1848
437 	 * which at the slowest possible rate of 5.5125 kHz means 907 us.
438 	 */
439 	msleep(1);
440 
441 	snd_printdd("(1) jiffies = %lu\n", jiffies);
442 
443 	/* check condition up to 250 ms */
444 	end_time = jiffies + msecs_to_jiffies(250);
445 	while (snd_wss_in(chip, CS4231_TEST_INIT) &
446 		CS4231_CALIB_IN_PROGRESS) {
447 
448 		if (time_after(jiffies, end_time)) {
449 			snd_printk(KERN_ERR "mce_down - "
450 					"auto calibration time out (2)\n");
451 			return;
452 		}
453 		msleep(1);
454 	}
455 
456 	snd_printdd("(2) jiffies = %lu\n", jiffies);
457 
458 	/* check condition up to 100 ms */
459 	end_time = jiffies + msecs_to_jiffies(100);
460 	while (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT) {
461 		if (time_after(jiffies, end_time)) {
462 			snd_printk(KERN_ERR "mce_down - auto calibration time out (3)\n");
463 			return;
464 		}
465 		msleep(1);
466 	}
467 
468 	snd_printdd("(3) jiffies = %lu\n", jiffies);
469 	snd_printd("mce_down - exit = 0x%x\n", wss_inb(chip, CS4231P(REGSEL)));
470 }
471 EXPORT_SYMBOL(snd_wss_mce_down);
472 
473 static unsigned int snd_wss_get_count(unsigned char format, unsigned int size)
474 {
475 	switch (format & 0xe0) {
476 	case CS4231_LINEAR_16:
477 	case CS4231_LINEAR_16_BIG:
478 		size >>= 1;
479 		break;
480 	case CS4231_ADPCM_16:
481 		return size >> 2;
482 	}
483 	if (format & CS4231_STEREO)
484 		size >>= 1;
485 	return size;
486 }
487 
488 static int snd_wss_trigger(struct snd_pcm_substream *substream,
489 			   int cmd)
490 {
491 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
492 	int result = 0;
493 	unsigned int what;
494 	struct snd_pcm_substream *s;
495 	int do_start;
496 
497 	switch (cmd) {
498 	case SNDRV_PCM_TRIGGER_START:
499 	case SNDRV_PCM_TRIGGER_RESUME:
500 		do_start = 1; break;
501 	case SNDRV_PCM_TRIGGER_STOP:
502 	case SNDRV_PCM_TRIGGER_SUSPEND:
503 		do_start = 0; break;
504 	default:
505 		return -EINVAL;
506 	}
507 
508 	what = 0;
509 	snd_pcm_group_for_each_entry(s, substream) {
510 		if (s == chip->playback_substream) {
511 			what |= CS4231_PLAYBACK_ENABLE;
512 			snd_pcm_trigger_done(s, substream);
513 		} else if (s == chip->capture_substream) {
514 			what |= CS4231_RECORD_ENABLE;
515 			snd_pcm_trigger_done(s, substream);
516 		}
517 	}
518 	spin_lock(&chip->reg_lock);
519 	if (do_start) {
520 		chip->image[CS4231_IFACE_CTRL] |= what;
521 		if (chip->trigger)
522 			chip->trigger(chip, what, 1);
523 	} else {
524 		chip->image[CS4231_IFACE_CTRL] &= ~what;
525 		if (chip->trigger)
526 			chip->trigger(chip, what, 0);
527 	}
528 	snd_wss_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
529 	spin_unlock(&chip->reg_lock);
530 #if 0
531 	snd_wss_debug(chip);
532 #endif
533 	return result;
534 }
535 
536 /*
537  *  CODEC I/O
538  */
539 
540 static unsigned char snd_wss_get_rate(unsigned int rate)
541 {
542 	int i;
543 
544 	for (i = 0; i < ARRAY_SIZE(rates); i++)
545 		if (rate == rates[i])
546 			return freq_bits[i];
547 	// snd_BUG();
548 	return freq_bits[ARRAY_SIZE(rates) - 1];
549 }
550 
551 static unsigned char snd_wss_get_format(struct snd_wss *chip,
552 					int format,
553 					int channels)
554 {
555 	unsigned char rformat;
556 
557 	rformat = CS4231_LINEAR_8;
558 	switch (format) {
559 	case SNDRV_PCM_FORMAT_MU_LAW:	rformat = CS4231_ULAW_8; break;
560 	case SNDRV_PCM_FORMAT_A_LAW:	rformat = CS4231_ALAW_8; break;
561 	case SNDRV_PCM_FORMAT_S16_LE:	rformat = CS4231_LINEAR_16; break;
562 	case SNDRV_PCM_FORMAT_S16_BE:	rformat = CS4231_LINEAR_16_BIG; break;
563 	case SNDRV_PCM_FORMAT_IMA_ADPCM:	rformat = CS4231_ADPCM_16; break;
564 	}
565 	if (channels > 1)
566 		rformat |= CS4231_STEREO;
567 #if 0
568 	snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
569 #endif
570 	return rformat;
571 }
572 
573 static void snd_wss_calibrate_mute(struct snd_wss *chip, int mute)
574 {
575 	unsigned long flags;
576 
577 	mute = mute ? 0x80 : 0;
578 	spin_lock_irqsave(&chip->reg_lock, flags);
579 	if (chip->calibrate_mute == mute) {
580 		spin_unlock_irqrestore(&chip->reg_lock, flags);
581 		return;
582 	}
583 	if (!mute) {
584 		snd_wss_dout(chip, CS4231_LEFT_INPUT,
585 			     chip->image[CS4231_LEFT_INPUT]);
586 		snd_wss_dout(chip, CS4231_RIGHT_INPUT,
587 			     chip->image[CS4231_RIGHT_INPUT]);
588 		snd_wss_dout(chip, CS4231_LOOPBACK,
589 			     chip->image[CS4231_LOOPBACK]);
590 	}
591 	snd_wss_dout(chip, CS4231_AUX1_LEFT_INPUT,
592 		     mute | chip->image[CS4231_AUX1_LEFT_INPUT]);
593 	snd_wss_dout(chip, CS4231_AUX1_RIGHT_INPUT,
594 		     mute | chip->image[CS4231_AUX1_RIGHT_INPUT]);
595 	snd_wss_dout(chip, CS4231_AUX2_LEFT_INPUT,
596 		     mute | chip->image[CS4231_AUX2_LEFT_INPUT]);
597 	snd_wss_dout(chip, CS4231_AUX2_RIGHT_INPUT,
598 		     mute | chip->image[CS4231_AUX2_RIGHT_INPUT]);
599 	snd_wss_dout(chip, CS4231_LEFT_OUTPUT,
600 		     mute | chip->image[CS4231_LEFT_OUTPUT]);
601 	snd_wss_dout(chip, CS4231_RIGHT_OUTPUT,
602 		     mute | chip->image[CS4231_RIGHT_OUTPUT]);
603 	if (!(chip->hardware & WSS_HW_AD1848_MASK)) {
604 		snd_wss_dout(chip, CS4231_LEFT_LINE_IN,
605 			     mute | chip->image[CS4231_LEFT_LINE_IN]);
606 		snd_wss_dout(chip, CS4231_RIGHT_LINE_IN,
607 			     mute | chip->image[CS4231_RIGHT_LINE_IN]);
608 		snd_wss_dout(chip, CS4231_MONO_CTRL,
609 			     mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
610 	}
611 	if (chip->hardware == WSS_HW_INTERWAVE) {
612 		snd_wss_dout(chip, CS4231_LEFT_MIC_INPUT,
613 			     mute | chip->image[CS4231_LEFT_MIC_INPUT]);
614 		snd_wss_dout(chip, CS4231_RIGHT_MIC_INPUT,
615 			     mute | chip->image[CS4231_RIGHT_MIC_INPUT]);
616 		snd_wss_dout(chip, CS4231_LINE_LEFT_OUTPUT,
617 			     mute | chip->image[CS4231_LINE_LEFT_OUTPUT]);
618 		snd_wss_dout(chip, CS4231_LINE_RIGHT_OUTPUT,
619 			     mute | chip->image[CS4231_LINE_RIGHT_OUTPUT]);
620 	}
621 	chip->calibrate_mute = mute;
622 	spin_unlock_irqrestore(&chip->reg_lock, flags);
623 }
624 
625 static void snd_wss_playback_format(struct snd_wss *chip,
626 				       struct snd_pcm_hw_params *params,
627 				       unsigned char pdfr)
628 {
629 	unsigned long flags;
630 	int full_calib = 1;
631 
632 	mutex_lock(&chip->mce_mutex);
633 	snd_wss_calibrate_mute(chip, 1);
634 	if (chip->hardware == WSS_HW_CS4231A ||
635 	    (chip->hardware & WSS_HW_CS4232_MASK)) {
636 		spin_lock_irqsave(&chip->reg_lock, flags);
637 		if ((chip->image[CS4231_PLAYBK_FORMAT] & 0x0f) == (pdfr & 0x0f)) {	/* rate is same? */
638 			snd_wss_out(chip, CS4231_ALT_FEATURE_1,
639 				    chip->image[CS4231_ALT_FEATURE_1] | 0x10);
640 			chip->image[CS4231_PLAYBK_FORMAT] = pdfr;
641 			snd_wss_out(chip, CS4231_PLAYBK_FORMAT,
642 				    chip->image[CS4231_PLAYBK_FORMAT]);
643 			snd_wss_out(chip, CS4231_ALT_FEATURE_1,
644 				    chip->image[CS4231_ALT_FEATURE_1] &= ~0x10);
645 			udelay(100); /* Fixes audible clicks at least on GUS MAX */
646 			full_calib = 0;
647 		}
648 		spin_unlock_irqrestore(&chip->reg_lock, flags);
649 	}
650 	if (full_calib) {
651 		snd_wss_mce_up(chip);
652 		spin_lock_irqsave(&chip->reg_lock, flags);
653 		if (chip->hardware != WSS_HW_INTERWAVE && !chip->single_dma) {
654 			if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE)
655 				pdfr = (pdfr & 0xf0) |
656 				       (chip->image[CS4231_REC_FORMAT] & 0x0f);
657 		} else {
658 			chip->image[CS4231_PLAYBK_FORMAT] = pdfr;
659 		}
660 		snd_wss_out(chip, CS4231_PLAYBK_FORMAT, pdfr);
661 		spin_unlock_irqrestore(&chip->reg_lock, flags);
662 		if (chip->hardware == WSS_HW_OPL3SA2)
663 			udelay(100);	/* this seems to help */
664 		snd_wss_mce_down(chip);
665 	}
666 	snd_wss_calibrate_mute(chip, 0);
667 	mutex_unlock(&chip->mce_mutex);
668 }
669 
670 static void snd_wss_capture_format(struct snd_wss *chip,
671 				   struct snd_pcm_hw_params *params,
672 				   unsigned char cdfr)
673 {
674 	unsigned long flags;
675 	int full_calib = 1;
676 
677 	mutex_lock(&chip->mce_mutex);
678 	snd_wss_calibrate_mute(chip, 1);
679 	if (chip->hardware == WSS_HW_CS4231A ||
680 	    (chip->hardware & WSS_HW_CS4232_MASK)) {
681 		spin_lock_irqsave(&chip->reg_lock, flags);
682 		if ((chip->image[CS4231_PLAYBK_FORMAT] & 0x0f) == (cdfr & 0x0f) ||	/* rate is same? */
683 		    (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
684 			snd_wss_out(chip, CS4231_ALT_FEATURE_1,
685 				chip->image[CS4231_ALT_FEATURE_1] | 0x20);
686 			snd_wss_out(chip, CS4231_REC_FORMAT,
687 				chip->image[CS4231_REC_FORMAT] = cdfr);
688 			snd_wss_out(chip, CS4231_ALT_FEATURE_1,
689 				chip->image[CS4231_ALT_FEATURE_1] &= ~0x20);
690 			full_calib = 0;
691 		}
692 		spin_unlock_irqrestore(&chip->reg_lock, flags);
693 	}
694 	if (full_calib) {
695 		snd_wss_mce_up(chip);
696 		spin_lock_irqsave(&chip->reg_lock, flags);
697 		if (chip->hardware != WSS_HW_INTERWAVE &&
698 		    !(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
699 			if (chip->single_dma)
700 				snd_wss_out(chip, CS4231_PLAYBK_FORMAT, cdfr);
701 			else
702 				snd_wss_out(chip, CS4231_PLAYBK_FORMAT,
703 				   (chip->image[CS4231_PLAYBK_FORMAT] & 0xf0) |
704 				   (cdfr & 0x0f));
705 			spin_unlock_irqrestore(&chip->reg_lock, flags);
706 			snd_wss_mce_down(chip);
707 			snd_wss_mce_up(chip);
708 			spin_lock_irqsave(&chip->reg_lock, flags);
709 		}
710 		if (chip->hardware & WSS_HW_AD1848_MASK)
711 			snd_wss_out(chip, CS4231_PLAYBK_FORMAT, cdfr);
712 		else
713 			snd_wss_out(chip, CS4231_REC_FORMAT, cdfr);
714 		spin_unlock_irqrestore(&chip->reg_lock, flags);
715 		snd_wss_mce_down(chip);
716 	}
717 	snd_wss_calibrate_mute(chip, 0);
718 	mutex_unlock(&chip->mce_mutex);
719 }
720 
721 /*
722  *  Timer interface
723  */
724 
725 static unsigned long snd_wss_timer_resolution(struct snd_timer *timer)
726 {
727 	struct snd_wss *chip = snd_timer_chip(timer);
728 	if (chip->hardware & WSS_HW_CS4236B_MASK)
729 		return 14467;
730 	else
731 		return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
732 }
733 
734 static int snd_wss_timer_start(struct snd_timer *timer)
735 {
736 	unsigned long flags;
737 	unsigned int ticks;
738 	struct snd_wss *chip = snd_timer_chip(timer);
739 	spin_lock_irqsave(&chip->reg_lock, flags);
740 	ticks = timer->sticks;
741 	if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
742 	    (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
743 	    (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
744 		chip->image[CS4231_TIMER_HIGH] = (unsigned char) (ticks >> 8);
745 		snd_wss_out(chip, CS4231_TIMER_HIGH,
746 			    chip->image[CS4231_TIMER_HIGH]);
747 		chip->image[CS4231_TIMER_LOW] = (unsigned char) ticks;
748 		snd_wss_out(chip, CS4231_TIMER_LOW,
749 			    chip->image[CS4231_TIMER_LOW]);
750 		snd_wss_out(chip, CS4231_ALT_FEATURE_1,
751 			    chip->image[CS4231_ALT_FEATURE_1] |
752 			    CS4231_TIMER_ENABLE);
753 	}
754 	spin_unlock_irqrestore(&chip->reg_lock, flags);
755 	return 0;
756 }
757 
758 static int snd_wss_timer_stop(struct snd_timer *timer)
759 {
760 	unsigned long flags;
761 	struct snd_wss *chip = snd_timer_chip(timer);
762 	spin_lock_irqsave(&chip->reg_lock, flags);
763 	chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE;
764 	snd_wss_out(chip, CS4231_ALT_FEATURE_1,
765 		    chip->image[CS4231_ALT_FEATURE_1]);
766 	spin_unlock_irqrestore(&chip->reg_lock, flags);
767 	return 0;
768 }
769 
770 static void snd_wss_init(struct snd_wss *chip)
771 {
772 	unsigned long flags;
773 
774 	snd_wss_mce_down(chip);
775 
776 #ifdef SNDRV_DEBUG_MCE
777 	snd_printk("init: (1)\n");
778 #endif
779 	snd_wss_mce_up(chip);
780 	spin_lock_irqsave(&chip->reg_lock, flags);
781 	chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
782 					    CS4231_PLAYBACK_PIO |
783 					    CS4231_RECORD_ENABLE |
784 					    CS4231_RECORD_PIO |
785 					    CS4231_CALIB_MODE);
786 	chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
787 	snd_wss_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
788 	spin_unlock_irqrestore(&chip->reg_lock, flags);
789 	snd_wss_mce_down(chip);
790 
791 #ifdef SNDRV_DEBUG_MCE
792 	snd_printk("init: (2)\n");
793 #endif
794 
795 	snd_wss_mce_up(chip);
796 	spin_lock_irqsave(&chip->reg_lock, flags);
797 	snd_wss_out(chip,
798 		    CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1]);
799 	spin_unlock_irqrestore(&chip->reg_lock, flags);
800 	snd_wss_mce_down(chip);
801 
802 #ifdef SNDRV_DEBUG_MCE
803 	snd_printk("init: (3) - afei = 0x%x\n",
804 		   chip->image[CS4231_ALT_FEATURE_1]);
805 #endif
806 
807 	spin_lock_irqsave(&chip->reg_lock, flags);
808 	snd_wss_out(chip, CS4231_ALT_FEATURE_2,
809 		    chip->image[CS4231_ALT_FEATURE_2]);
810 	spin_unlock_irqrestore(&chip->reg_lock, flags);
811 
812 	snd_wss_mce_up(chip);
813 	spin_lock_irqsave(&chip->reg_lock, flags);
814 	snd_wss_out(chip, CS4231_PLAYBK_FORMAT,
815 		    chip->image[CS4231_PLAYBK_FORMAT]);
816 	spin_unlock_irqrestore(&chip->reg_lock, flags);
817 	snd_wss_mce_down(chip);
818 
819 #ifdef SNDRV_DEBUG_MCE
820 	snd_printk("init: (4)\n");
821 #endif
822 
823 	snd_wss_mce_up(chip);
824 	spin_lock_irqsave(&chip->reg_lock, flags);
825 	if (!(chip->hardware & WSS_HW_AD1848_MASK))
826 		snd_wss_out(chip, CS4231_REC_FORMAT,
827 			    chip->image[CS4231_REC_FORMAT]);
828 	spin_unlock_irqrestore(&chip->reg_lock, flags);
829 	snd_wss_mce_down(chip);
830 
831 #ifdef SNDRV_DEBUG_MCE
832 	snd_printk("init: (5)\n");
833 #endif
834 }
835 
836 static int snd_wss_open(struct snd_wss *chip, unsigned int mode)
837 {
838 	unsigned long flags;
839 
840 	mutex_lock(&chip->open_mutex);
841 	if ((chip->mode & mode) ||
842 	    ((chip->mode & WSS_MODE_OPEN) && chip->single_dma)) {
843 		mutex_unlock(&chip->open_mutex);
844 		return -EAGAIN;
845 	}
846 	if (chip->mode & WSS_MODE_OPEN) {
847 		chip->mode |= mode;
848 		mutex_unlock(&chip->open_mutex);
849 		return 0;
850 	}
851 	/* ok. now enable and ack CODEC IRQ */
852 	spin_lock_irqsave(&chip->reg_lock, flags);
853 	if (!(chip->hardware & WSS_HW_AD1848_MASK)) {
854 		snd_wss_out(chip, CS4231_IRQ_STATUS,
855 			    CS4231_PLAYBACK_IRQ |
856 			    CS4231_RECORD_IRQ |
857 			    CS4231_TIMER_IRQ);
858 		snd_wss_out(chip, CS4231_IRQ_STATUS, 0);
859 	}
860 	wss_outb(chip, CS4231P(STATUS), 0);	/* clear IRQ */
861 	wss_outb(chip, CS4231P(STATUS), 0);	/* clear IRQ */
862 	chip->image[CS4231_PIN_CTRL] |= CS4231_IRQ_ENABLE;
863 	snd_wss_out(chip, CS4231_PIN_CTRL, chip->image[CS4231_PIN_CTRL]);
864 	if (!(chip->hardware & WSS_HW_AD1848_MASK)) {
865 		snd_wss_out(chip, CS4231_IRQ_STATUS,
866 			    CS4231_PLAYBACK_IRQ |
867 			    CS4231_RECORD_IRQ |
868 			    CS4231_TIMER_IRQ);
869 		snd_wss_out(chip, CS4231_IRQ_STATUS, 0);
870 	}
871 	spin_unlock_irqrestore(&chip->reg_lock, flags);
872 
873 	chip->mode = mode;
874 	mutex_unlock(&chip->open_mutex);
875 	return 0;
876 }
877 
878 static void snd_wss_close(struct snd_wss *chip, unsigned int mode)
879 {
880 	unsigned long flags;
881 
882 	mutex_lock(&chip->open_mutex);
883 	chip->mode &= ~mode;
884 	if (chip->mode & WSS_MODE_OPEN) {
885 		mutex_unlock(&chip->open_mutex);
886 		return;
887 	}
888 	snd_wss_calibrate_mute(chip, 1);
889 
890 	/* disable IRQ */
891 	spin_lock_irqsave(&chip->reg_lock, flags);
892 	if (!(chip->hardware & WSS_HW_AD1848_MASK))
893 		snd_wss_out(chip, CS4231_IRQ_STATUS, 0);
894 	wss_outb(chip, CS4231P(STATUS), 0);	/* clear IRQ */
895 	wss_outb(chip, CS4231P(STATUS), 0);	/* clear IRQ */
896 	chip->image[CS4231_PIN_CTRL] &= ~CS4231_IRQ_ENABLE;
897 	snd_wss_out(chip, CS4231_PIN_CTRL, chip->image[CS4231_PIN_CTRL]);
898 
899 	/* now disable record & playback */
900 
901 	if (chip->image[CS4231_IFACE_CTRL] & (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
902 					       CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
903 		spin_unlock_irqrestore(&chip->reg_lock, flags);
904 		snd_wss_mce_up(chip);
905 		spin_lock_irqsave(&chip->reg_lock, flags);
906 		chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
907 						     CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
908 		snd_wss_out(chip, CS4231_IFACE_CTRL,
909 			    chip->image[CS4231_IFACE_CTRL]);
910 		spin_unlock_irqrestore(&chip->reg_lock, flags);
911 		snd_wss_mce_down(chip);
912 		spin_lock_irqsave(&chip->reg_lock, flags);
913 	}
914 
915 	/* clear IRQ again */
916 	if (!(chip->hardware & WSS_HW_AD1848_MASK))
917 		snd_wss_out(chip, CS4231_IRQ_STATUS, 0);
918 	wss_outb(chip, CS4231P(STATUS), 0);	/* clear IRQ */
919 	wss_outb(chip, CS4231P(STATUS), 0);	/* clear IRQ */
920 	spin_unlock_irqrestore(&chip->reg_lock, flags);
921 
922 	snd_wss_calibrate_mute(chip, 0);
923 
924 	chip->mode = 0;
925 	mutex_unlock(&chip->open_mutex);
926 }
927 
928 /*
929  *  timer open/close
930  */
931 
932 static int snd_wss_timer_open(struct snd_timer *timer)
933 {
934 	struct snd_wss *chip = snd_timer_chip(timer);
935 	snd_wss_open(chip, WSS_MODE_TIMER);
936 	return 0;
937 }
938 
939 static int snd_wss_timer_close(struct snd_timer *timer)
940 {
941 	struct snd_wss *chip = snd_timer_chip(timer);
942 	snd_wss_close(chip, WSS_MODE_TIMER);
943 	return 0;
944 }
945 
946 static struct snd_timer_hardware snd_wss_timer_table =
947 {
948 	.flags =	SNDRV_TIMER_HW_AUTO,
949 	.resolution =	9945,
950 	.ticks =	65535,
951 	.open =		snd_wss_timer_open,
952 	.close =	snd_wss_timer_close,
953 	.c_resolution = snd_wss_timer_resolution,
954 	.start =	snd_wss_timer_start,
955 	.stop =		snd_wss_timer_stop,
956 };
957 
958 /*
959  *  ok.. exported functions..
960  */
961 
962 static int snd_wss_playback_hw_params(struct snd_pcm_substream *substream,
963 					 struct snd_pcm_hw_params *hw_params)
964 {
965 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
966 	unsigned char new_pdfr;
967 	int err;
968 
969 	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
970 		return err;
971 	new_pdfr = snd_wss_get_format(chip, params_format(hw_params),
972 				params_channels(hw_params)) |
973 				snd_wss_get_rate(params_rate(hw_params));
974 	chip->set_playback_format(chip, hw_params, new_pdfr);
975 	return 0;
976 }
977 
978 static int snd_wss_playback_hw_free(struct snd_pcm_substream *substream)
979 {
980 	return snd_pcm_lib_free_pages(substream);
981 }
982 
983 static int snd_wss_playback_prepare(struct snd_pcm_substream *substream)
984 {
985 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
986 	struct snd_pcm_runtime *runtime = substream->runtime;
987 	unsigned long flags;
988 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
989 	unsigned int count = snd_pcm_lib_period_bytes(substream);
990 
991 	spin_lock_irqsave(&chip->reg_lock, flags);
992 	chip->p_dma_size = size;
993 	chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO);
994 	snd_dma_program(chip->dma1, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
995 	count = snd_wss_get_count(chip->image[CS4231_PLAYBK_FORMAT], count) - 1;
996 	snd_wss_out(chip, CS4231_PLY_LWR_CNT, (unsigned char) count);
997 	snd_wss_out(chip, CS4231_PLY_UPR_CNT, (unsigned char) (count >> 8));
998 	spin_unlock_irqrestore(&chip->reg_lock, flags);
999 #if 0
1000 	snd_wss_debug(chip);
1001 #endif
1002 	return 0;
1003 }
1004 
1005 static int snd_wss_capture_hw_params(struct snd_pcm_substream *substream,
1006 					struct snd_pcm_hw_params *hw_params)
1007 {
1008 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
1009 	unsigned char new_cdfr;
1010 	int err;
1011 
1012 	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
1013 		return err;
1014 	new_cdfr = snd_wss_get_format(chip, params_format(hw_params),
1015 			   params_channels(hw_params)) |
1016 			   snd_wss_get_rate(params_rate(hw_params));
1017 	chip->set_capture_format(chip, hw_params, new_cdfr);
1018 	return 0;
1019 }
1020 
1021 static int snd_wss_capture_hw_free(struct snd_pcm_substream *substream)
1022 {
1023 	return snd_pcm_lib_free_pages(substream);
1024 }
1025 
1026 static int snd_wss_capture_prepare(struct snd_pcm_substream *substream)
1027 {
1028 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
1029 	struct snd_pcm_runtime *runtime = substream->runtime;
1030 	unsigned long flags;
1031 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
1032 	unsigned int count = snd_pcm_lib_period_bytes(substream);
1033 
1034 	spin_lock_irqsave(&chip->reg_lock, flags);
1035 	chip->c_dma_size = size;
1036 	chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
1037 	snd_dma_program(chip->dma2, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
1038 	if (chip->hardware & WSS_HW_AD1848_MASK)
1039 		count = snd_wss_get_count(chip->image[CS4231_PLAYBK_FORMAT],
1040 					  count);
1041 	else
1042 		count = snd_wss_get_count(chip->image[CS4231_REC_FORMAT],
1043 					  count);
1044 	count--;
1045 	if (chip->single_dma && chip->hardware != WSS_HW_INTERWAVE) {
1046 		snd_wss_out(chip, CS4231_PLY_LWR_CNT, (unsigned char) count);
1047 		snd_wss_out(chip, CS4231_PLY_UPR_CNT,
1048 			    (unsigned char) (count >> 8));
1049 	} else {
1050 		snd_wss_out(chip, CS4231_REC_LWR_CNT, (unsigned char) count);
1051 		snd_wss_out(chip, CS4231_REC_UPR_CNT,
1052 			    (unsigned char) (count >> 8));
1053 	}
1054 	spin_unlock_irqrestore(&chip->reg_lock, flags);
1055 	return 0;
1056 }
1057 
1058 void snd_wss_overrange(struct snd_wss *chip)
1059 {
1060 	unsigned long flags;
1061 	unsigned char res;
1062 
1063 	spin_lock_irqsave(&chip->reg_lock, flags);
1064 	res = snd_wss_in(chip, CS4231_TEST_INIT);
1065 	spin_unlock_irqrestore(&chip->reg_lock, flags);
1066 	if (res & (0x08 | 0x02))	/* detect overrange only above 0dB; may be user selectable? */
1067 		chip->capture_substream->runtime->overrange++;
1068 }
1069 EXPORT_SYMBOL(snd_wss_overrange);
1070 
1071 irqreturn_t snd_wss_interrupt(int irq, void *dev_id)
1072 {
1073 	struct snd_wss *chip = dev_id;
1074 	unsigned char status;
1075 
1076 	if (chip->hardware & WSS_HW_AD1848_MASK)
1077 		/* pretend it was the only possible irq for AD1848 */
1078 		status = CS4231_PLAYBACK_IRQ;
1079 	else
1080 		status = snd_wss_in(chip, CS4231_IRQ_STATUS);
1081 	if (status & CS4231_TIMER_IRQ) {
1082 		if (chip->timer)
1083 			snd_timer_interrupt(chip->timer, chip->timer->sticks);
1084 	}
1085 	if (chip->single_dma && chip->hardware != WSS_HW_INTERWAVE) {
1086 		if (status & CS4231_PLAYBACK_IRQ) {
1087 			if (chip->mode & WSS_MODE_PLAY) {
1088 				if (chip->playback_substream)
1089 					snd_pcm_period_elapsed(chip->playback_substream);
1090 			}
1091 			if (chip->mode & WSS_MODE_RECORD) {
1092 				if (chip->capture_substream) {
1093 					snd_wss_overrange(chip);
1094 					snd_pcm_period_elapsed(chip->capture_substream);
1095 				}
1096 			}
1097 		}
1098 	} else {
1099 		if (status & CS4231_PLAYBACK_IRQ) {
1100 			if (chip->playback_substream)
1101 				snd_pcm_period_elapsed(chip->playback_substream);
1102 		}
1103 		if (status & CS4231_RECORD_IRQ) {
1104 			if (chip->capture_substream) {
1105 				snd_wss_overrange(chip);
1106 				snd_pcm_period_elapsed(chip->capture_substream);
1107 			}
1108 		}
1109 	}
1110 
1111 	spin_lock(&chip->reg_lock);
1112 	status = ~CS4231_ALL_IRQS | ~status;
1113 	if (chip->hardware & WSS_HW_AD1848_MASK)
1114 		wss_outb(chip, CS4231P(STATUS), 0);
1115 	else
1116 		snd_wss_outm(chip, CS4231_IRQ_STATUS, status, 0);
1117 	spin_unlock(&chip->reg_lock);
1118 	return IRQ_HANDLED;
1119 }
1120 EXPORT_SYMBOL(snd_wss_interrupt);
1121 
1122 static snd_pcm_uframes_t snd_wss_playback_pointer(struct snd_pcm_substream *substream)
1123 {
1124 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
1125 	size_t ptr;
1126 
1127 	if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
1128 		return 0;
1129 	ptr = snd_dma_pointer(chip->dma1, chip->p_dma_size);
1130 	return bytes_to_frames(substream->runtime, ptr);
1131 }
1132 
1133 static snd_pcm_uframes_t snd_wss_capture_pointer(struct snd_pcm_substream *substream)
1134 {
1135 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
1136 	size_t ptr;
1137 
1138 	if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
1139 		return 0;
1140 	ptr = snd_dma_pointer(chip->dma2, chip->c_dma_size);
1141 	return bytes_to_frames(substream->runtime, ptr);
1142 }
1143 
1144 /*
1145 
1146  */
1147 
1148 static int snd_ad1848_probe(struct snd_wss *chip)
1149 {
1150 	unsigned long timeout = jiffies + msecs_to_jiffies(1000);
1151 	unsigned long flags;
1152 	unsigned char r;
1153 	unsigned short hardware = 0;
1154 	int err = 0;
1155 	int i;
1156 
1157 	while (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT) {
1158 		if (time_after(jiffies, timeout))
1159 			return -ENODEV;
1160 		cond_resched();
1161 	}
1162 	spin_lock_irqsave(&chip->reg_lock, flags);
1163 
1164 	/* set CS423x MODE 1 */
1165 	snd_wss_dout(chip, CS4231_MISC_INFO, 0);
1166 
1167 	snd_wss_dout(chip, CS4231_RIGHT_INPUT, 0x45); /* 0x55 & ~0x10 */
1168 	r = snd_wss_in(chip, CS4231_RIGHT_INPUT);
1169 	if (r != 0x45) {
1170 		/* RMGE always high on AD1847 */
1171 		if ((r & ~CS4231_ENABLE_MIC_GAIN) != 0x45) {
1172 			err = -ENODEV;
1173 			goto out;
1174 		}
1175 		hardware = WSS_HW_AD1847;
1176 	} else {
1177 		snd_wss_dout(chip, CS4231_LEFT_INPUT,  0xaa);
1178 		r = snd_wss_in(chip, CS4231_LEFT_INPUT);
1179 		/* L/RMGE always low on AT2320 */
1180 		if ((r | CS4231_ENABLE_MIC_GAIN) != 0xaa) {
1181 			err = -ENODEV;
1182 			goto out;
1183 		}
1184 	}
1185 
1186 	/* clear pending IRQ */
1187 	wss_inb(chip, CS4231P(STATUS));
1188 	wss_outb(chip, CS4231P(STATUS), 0);
1189 	mb();
1190 
1191 	if ((chip->hardware & WSS_HW_TYPE_MASK) != WSS_HW_DETECT)
1192 		goto out;
1193 
1194 	if (hardware) {
1195 		chip->hardware = hardware;
1196 		goto out;
1197 	}
1198 
1199 	r = snd_wss_in(chip, CS4231_MISC_INFO);
1200 
1201 	/* set CS423x MODE 2 */
1202 	snd_wss_dout(chip, CS4231_MISC_INFO, CS4231_MODE2);
1203 	for (i = 0; i < 16; i++) {
1204 		if (snd_wss_in(chip, i) != snd_wss_in(chip, 16 + i)) {
1205 			/* we have more than 16 registers: check ID */
1206 			if ((r & 0xf) != 0xa)
1207 				goto out_mode;
1208 			/*
1209 			 * on CMI8330, CS4231_VERSION is volume control and
1210 			 * can be set to 0
1211 			 */
1212 			snd_wss_dout(chip, CS4231_VERSION, 0);
1213 			r = snd_wss_in(chip, CS4231_VERSION) & 0xe7;
1214 			if (!r)
1215 				chip->hardware = WSS_HW_CMI8330;
1216 			goto out_mode;
1217 		}
1218 	}
1219 	if (r & 0x80)
1220 		chip->hardware = WSS_HW_CS4248;
1221 	else
1222 		chip->hardware = WSS_HW_AD1848;
1223 out_mode:
1224 	snd_wss_dout(chip, CS4231_MISC_INFO, 0);
1225 out:
1226 	spin_unlock_irqrestore(&chip->reg_lock, flags);
1227 	return err;
1228 }
1229 
1230 static int snd_wss_probe(struct snd_wss *chip)
1231 {
1232 	unsigned long flags;
1233 	int i, id, rev, regnum;
1234 	unsigned char *ptr;
1235 	unsigned int hw;
1236 
1237 	id = snd_ad1848_probe(chip);
1238 	if (id < 0)
1239 		return id;
1240 
1241 	hw = chip->hardware;
1242 	if ((hw & WSS_HW_TYPE_MASK) == WSS_HW_DETECT) {
1243 		for (i = 0; i < 50; i++) {
1244 			mb();
1245 			if (wss_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
1246 				msleep(2);
1247 			else {
1248 				spin_lock_irqsave(&chip->reg_lock, flags);
1249 				snd_wss_out(chip, CS4231_MISC_INFO,
1250 					    CS4231_MODE2);
1251 				id = snd_wss_in(chip, CS4231_MISC_INFO) & 0x0f;
1252 				spin_unlock_irqrestore(&chip->reg_lock, flags);
1253 				if (id == 0x0a)
1254 					break;	/* this is valid value */
1255 			}
1256 		}
1257 		snd_printdd("wss: port = 0x%lx, id = 0x%x\n", chip->port, id);
1258 		if (id != 0x0a)
1259 			return -ENODEV;	/* no valid device found */
1260 
1261 		rev = snd_wss_in(chip, CS4231_VERSION) & 0xe7;
1262 		snd_printdd("CS4231: VERSION (I25) = 0x%x\n", rev);
1263 		if (rev == 0x80) {
1264 			unsigned char tmp = snd_wss_in(chip, 23);
1265 			snd_wss_out(chip, 23, ~tmp);
1266 			if (snd_wss_in(chip, 23) != tmp)
1267 				chip->hardware = WSS_HW_AD1845;
1268 			else
1269 				chip->hardware = WSS_HW_CS4231;
1270 		} else if (rev == 0xa0) {
1271 			chip->hardware = WSS_HW_CS4231A;
1272 		} else if (rev == 0xa2) {
1273 			chip->hardware = WSS_HW_CS4232;
1274 		} else if (rev == 0xb2) {
1275 			chip->hardware = WSS_HW_CS4232A;
1276 		} else if (rev == 0x83) {
1277 			chip->hardware = WSS_HW_CS4236;
1278 		} else if (rev == 0x03) {
1279 			chip->hardware = WSS_HW_CS4236B;
1280 		} else {
1281 			snd_printk("unknown CS chip with version 0x%x\n", rev);
1282 			return -ENODEV;		/* unknown CS4231 chip? */
1283 		}
1284 	}
1285 	spin_lock_irqsave(&chip->reg_lock, flags);
1286 	wss_inb(chip, CS4231P(STATUS));	/* clear any pendings IRQ */
1287 	wss_outb(chip, CS4231P(STATUS), 0);
1288 	mb();
1289 	spin_unlock_irqrestore(&chip->reg_lock, flags);
1290 
1291 	if (!(chip->hardware & WSS_HW_AD1848_MASK))
1292 		chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1293 	switch (chip->hardware) {
1294 	case WSS_HW_INTERWAVE:
1295 		chip->image[CS4231_MISC_INFO] = CS4231_IW_MODE3;
1296 		break;
1297 	case WSS_HW_CS4235:
1298 	case WSS_HW_CS4236B:
1299 	case WSS_HW_CS4237B:
1300 	case WSS_HW_CS4238B:
1301 	case WSS_HW_CS4239:
1302 		if (hw == WSS_HW_DETECT3)
1303 			chip->image[CS4231_MISC_INFO] = CS4231_4236_MODE3;
1304 		else
1305 			chip->hardware = WSS_HW_CS4236;
1306 		break;
1307 	}
1308 
1309 	chip->image[CS4231_IFACE_CTRL] =
1310 	    (chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA) |
1311 	    (chip->single_dma ? CS4231_SINGLE_DMA : 0);
1312 	if (chip->hardware != WSS_HW_OPTI93X) {
1313 		chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1314 		chip->image[CS4231_ALT_FEATURE_2] =
1315 			chip->hardware == WSS_HW_INTERWAVE ? 0xc2 : 0x01;
1316 	}
1317 	ptr = (unsigned char *) &chip->image;
1318 	regnum = (chip->hardware & WSS_HW_AD1848_MASK) ? 16 : 32;
1319 	snd_wss_mce_down(chip);
1320 	spin_lock_irqsave(&chip->reg_lock, flags);
1321 	for (i = 0; i < regnum; i++)	/* ok.. fill all registers */
1322 		snd_wss_out(chip, i, *ptr++);
1323 	spin_unlock_irqrestore(&chip->reg_lock, flags);
1324 	snd_wss_mce_up(chip);
1325 	snd_wss_mce_down(chip);
1326 
1327 	mdelay(2);
1328 
1329 	/* ok.. try check hardware version for CS4236+ chips */
1330 	if ((hw & WSS_HW_TYPE_MASK) == WSS_HW_DETECT) {
1331 		if (chip->hardware == WSS_HW_CS4236B) {
1332 			rev = snd_cs4236_ext_in(chip, CS4236_VERSION);
1333 			snd_cs4236_ext_out(chip, CS4236_VERSION, 0xff);
1334 			id = snd_cs4236_ext_in(chip, CS4236_VERSION);
1335 			snd_cs4236_ext_out(chip, CS4236_VERSION, rev);
1336 			snd_printdd("CS4231: ext version; rev = 0x%x, id = 0x%x\n", rev, id);
1337 			if ((id & 0x1f) == 0x1d) {	/* CS4235 */
1338 				chip->hardware = WSS_HW_CS4235;
1339 				switch (id >> 5) {
1340 				case 4:
1341 				case 5:
1342 				case 6:
1343 					break;
1344 				default:
1345 					snd_printk("unknown CS4235 chip (enhanced version = 0x%x)\n", id);
1346 				}
1347 			} else if ((id & 0x1f) == 0x0b) {	/* CS4236/B */
1348 				switch (id >> 5) {
1349 				case 4:
1350 				case 5:
1351 				case 6:
1352 				case 7:
1353 					chip->hardware = WSS_HW_CS4236B;
1354 					break;
1355 				default:
1356 					snd_printk("unknown CS4236 chip (enhanced version = 0x%x)\n", id);
1357 				}
1358 			} else if ((id & 0x1f) == 0x08) {	/* CS4237B */
1359 				chip->hardware = WSS_HW_CS4237B;
1360 				switch (id >> 5) {
1361 				case 4:
1362 				case 5:
1363 				case 6:
1364 				case 7:
1365 					break;
1366 				default:
1367 					snd_printk("unknown CS4237B chip (enhanced version = 0x%x)\n", id);
1368 				}
1369 			} else if ((id & 0x1f) == 0x09) {	/* CS4238B */
1370 				chip->hardware = WSS_HW_CS4238B;
1371 				switch (id >> 5) {
1372 				case 5:
1373 				case 6:
1374 				case 7:
1375 					break;
1376 				default:
1377 					snd_printk("unknown CS4238B chip (enhanced version = 0x%x)\n", id);
1378 				}
1379 			} else if ((id & 0x1f) == 0x1e) {	/* CS4239 */
1380 				chip->hardware = WSS_HW_CS4239;
1381 				switch (id >> 5) {
1382 				case 4:
1383 				case 5:
1384 				case 6:
1385 					break;
1386 				default:
1387 					snd_printk("unknown CS4239 chip (enhanced version = 0x%x)\n", id);
1388 				}
1389 			} else {
1390 				snd_printk("unknown CS4236/CS423xB chip (enhanced version = 0x%x)\n", id);
1391 			}
1392 		}
1393 	}
1394 	return 0;		/* all things are ok.. */
1395 }
1396 
1397 /*
1398 
1399  */
1400 
1401 static struct snd_pcm_hardware snd_wss_playback =
1402 {
1403 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1404 				 SNDRV_PCM_INFO_MMAP_VALID |
1405 				 SNDRV_PCM_INFO_RESUME |
1406 				 SNDRV_PCM_INFO_SYNC_START),
1407 	.formats =		(SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
1408 				 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
1409 	.rates =		SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
1410 	.rate_min =		5510,
1411 	.rate_max =		48000,
1412 	.channels_min =		1,
1413 	.channels_max =		2,
1414 	.buffer_bytes_max =	(128*1024),
1415 	.period_bytes_min =	64,
1416 	.period_bytes_max =	(128*1024),
1417 	.periods_min =		1,
1418 	.periods_max =		1024,
1419 	.fifo_size =		0,
1420 };
1421 
1422 static struct snd_pcm_hardware snd_wss_capture =
1423 {
1424 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1425 				 SNDRV_PCM_INFO_MMAP_VALID |
1426 				 SNDRV_PCM_INFO_RESUME |
1427 				 SNDRV_PCM_INFO_SYNC_START),
1428 	.formats =		(SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
1429 				 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
1430 	.rates =		SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
1431 	.rate_min =		5510,
1432 	.rate_max =		48000,
1433 	.channels_min =		1,
1434 	.channels_max =		2,
1435 	.buffer_bytes_max =	(128*1024),
1436 	.period_bytes_min =	64,
1437 	.period_bytes_max =	(128*1024),
1438 	.periods_min =		1,
1439 	.periods_max =		1024,
1440 	.fifo_size =		0,
1441 };
1442 
1443 /*
1444 
1445  */
1446 
1447 static int snd_wss_playback_open(struct snd_pcm_substream *substream)
1448 {
1449 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
1450 	struct snd_pcm_runtime *runtime = substream->runtime;
1451 	int err;
1452 
1453 	runtime->hw = snd_wss_playback;
1454 
1455 	/* hardware limitation of older chipsets */
1456 	if (chip->hardware & WSS_HW_AD1848_MASK)
1457 		runtime->hw.formats &= ~(SNDRV_PCM_FMTBIT_IMA_ADPCM |
1458 					 SNDRV_PCM_FMTBIT_S16_BE);
1459 
1460 	/* hardware bug in InterWave chipset */
1461 	if (chip->hardware == WSS_HW_INTERWAVE && chip->dma1 > 3)
1462 		runtime->hw.formats &= ~SNDRV_PCM_FMTBIT_MU_LAW;
1463 
1464 	/* hardware limitation of cheap chips */
1465 	if (chip->hardware == WSS_HW_CS4235 ||
1466 	    chip->hardware == WSS_HW_CS4239)
1467 		runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE;
1468 
1469 	snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.buffer_bytes_max);
1470 	snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.period_bytes_max);
1471 
1472 	if (chip->claim_dma) {
1473 		if ((err = chip->claim_dma(chip, chip->dma_private_data, chip->dma1)) < 0)
1474 			return err;
1475 	}
1476 
1477 	err = snd_wss_open(chip, WSS_MODE_PLAY);
1478 	if (err < 0) {
1479 		if (chip->release_dma)
1480 			chip->release_dma(chip, chip->dma_private_data, chip->dma1);
1481 		snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1482 		return err;
1483 	}
1484 	chip->playback_substream = substream;
1485 	snd_pcm_set_sync(substream);
1486 	chip->rate_constraint(runtime);
1487 	return 0;
1488 }
1489 
1490 static int snd_wss_capture_open(struct snd_pcm_substream *substream)
1491 {
1492 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
1493 	struct snd_pcm_runtime *runtime = substream->runtime;
1494 	int err;
1495 
1496 	runtime->hw = snd_wss_capture;
1497 
1498 	/* hardware limitation of older chipsets */
1499 	if (chip->hardware & WSS_HW_AD1848_MASK)
1500 		runtime->hw.formats &= ~(SNDRV_PCM_FMTBIT_IMA_ADPCM |
1501 					 SNDRV_PCM_FMTBIT_S16_BE);
1502 
1503 	/* hardware limitation of cheap chips */
1504 	if (chip->hardware == WSS_HW_CS4235 ||
1505 	    chip->hardware == WSS_HW_CS4239 ||
1506 	    chip->hardware == WSS_HW_OPTI93X)
1507 		runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 |
1508 				      SNDRV_PCM_FMTBIT_S16_LE;
1509 
1510 	snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.buffer_bytes_max);
1511 	snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.period_bytes_max);
1512 
1513 	if (chip->claim_dma) {
1514 		if ((err = chip->claim_dma(chip, chip->dma_private_data, chip->dma2)) < 0)
1515 			return err;
1516 	}
1517 
1518 	err = snd_wss_open(chip, WSS_MODE_RECORD);
1519 	if (err < 0) {
1520 		if (chip->release_dma)
1521 			chip->release_dma(chip, chip->dma_private_data, chip->dma2);
1522 		snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1523 		return err;
1524 	}
1525 	chip->capture_substream = substream;
1526 	snd_pcm_set_sync(substream);
1527 	chip->rate_constraint(runtime);
1528 	return 0;
1529 }
1530 
1531 static int snd_wss_playback_close(struct snd_pcm_substream *substream)
1532 {
1533 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
1534 
1535 	chip->playback_substream = NULL;
1536 	snd_wss_close(chip, WSS_MODE_PLAY);
1537 	return 0;
1538 }
1539 
1540 static int snd_wss_capture_close(struct snd_pcm_substream *substream)
1541 {
1542 	struct snd_wss *chip = snd_pcm_substream_chip(substream);
1543 
1544 	chip->capture_substream = NULL;
1545 	snd_wss_close(chip, WSS_MODE_RECORD);
1546 	return 0;
1547 }
1548 
1549 static void snd_wss_thinkpad_twiddle(struct snd_wss *chip, int on)
1550 {
1551 	int tmp;
1552 
1553 	if (!chip->thinkpad_flag)
1554 		return;
1555 
1556 	outb(0x1c, AD1848_THINKPAD_CTL_PORT1);
1557 	tmp = inb(AD1848_THINKPAD_CTL_PORT2);
1558 
1559 	if (on)
1560 		/* turn it on */
1561 		tmp |= AD1848_THINKPAD_CS4248_ENABLE_BIT;
1562 	else
1563 		/* turn it off */
1564 		tmp &= ~AD1848_THINKPAD_CS4248_ENABLE_BIT;
1565 
1566 	outb(tmp, AD1848_THINKPAD_CTL_PORT2);
1567 }
1568 
1569 #ifdef CONFIG_PM
1570 
1571 /* lowlevel suspend callback for CS4231 */
1572 static void snd_wss_suspend(struct snd_wss *chip)
1573 {
1574 	int reg;
1575 	unsigned long flags;
1576 
1577 	snd_pcm_suspend_all(chip->pcm);
1578 	spin_lock_irqsave(&chip->reg_lock, flags);
1579 	for (reg = 0; reg < 32; reg++)
1580 		chip->image[reg] = snd_wss_in(chip, reg);
1581 	spin_unlock_irqrestore(&chip->reg_lock, flags);
1582 	if (chip->thinkpad_flag)
1583 		snd_wss_thinkpad_twiddle(chip, 0);
1584 }
1585 
1586 /* lowlevel resume callback for CS4231 */
1587 static void snd_wss_resume(struct snd_wss *chip)
1588 {
1589 	int reg;
1590 	unsigned long flags;
1591 	/* int timeout; */
1592 
1593 	if (chip->thinkpad_flag)
1594 		snd_wss_thinkpad_twiddle(chip, 1);
1595 	snd_wss_mce_up(chip);
1596 	spin_lock_irqsave(&chip->reg_lock, flags);
1597 	for (reg = 0; reg < 32; reg++) {
1598 		switch (reg) {
1599 		case CS4231_VERSION:
1600 			break;
1601 		default:
1602 			snd_wss_out(chip, reg, chip->image[reg]);
1603 			break;
1604 		}
1605 	}
1606 	spin_unlock_irqrestore(&chip->reg_lock, flags);
1607 #if 1
1608 	snd_wss_mce_down(chip);
1609 #else
1610 	/* The following is a workaround to avoid freeze after resume on TP600E.
1611 	   This is the first half of copy of snd_wss_mce_down(), but doesn't
1612 	   include rescheduling.  -- iwai
1613 	   */
1614 	snd_wss_busy_wait(chip);
1615 	spin_lock_irqsave(&chip->reg_lock, flags);
1616 	chip->mce_bit &= ~CS4231_MCE;
1617 	timeout = wss_inb(chip, CS4231P(REGSEL));
1618 	wss_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
1619 	spin_unlock_irqrestore(&chip->reg_lock, flags);
1620 	if (timeout == 0x80)
1621 		snd_printk("down [0x%lx]: serious init problem - codec still busy\n", chip->port);
1622 	if ((timeout & CS4231_MCE) == 0 ||
1623 	    !(chip->hardware & (WSS_HW_CS4231_MASK | WSS_HW_CS4232_MASK))) {
1624 		return;
1625 	}
1626 	snd_wss_busy_wait(chip);
1627 #endif
1628 }
1629 #endif /* CONFIG_PM */
1630 
1631 static int snd_wss_free(struct snd_wss *chip)
1632 {
1633 	release_and_free_resource(chip->res_port);
1634 	release_and_free_resource(chip->res_cport);
1635 	if (chip->irq >= 0) {
1636 		disable_irq(chip->irq);
1637 		if (!(chip->hwshare & WSS_HWSHARE_IRQ))
1638 			free_irq(chip->irq, (void *) chip);
1639 	}
1640 	if (!(chip->hwshare & WSS_HWSHARE_DMA1) && chip->dma1 >= 0) {
1641 		snd_dma_disable(chip->dma1);
1642 		free_dma(chip->dma1);
1643 	}
1644 	if (!(chip->hwshare & WSS_HWSHARE_DMA2) &&
1645 	    chip->dma2 >= 0 && chip->dma2 != chip->dma1) {
1646 		snd_dma_disable(chip->dma2);
1647 		free_dma(chip->dma2);
1648 	}
1649 	if (chip->timer)
1650 		snd_device_free(chip->card, chip->timer);
1651 	kfree(chip);
1652 	return 0;
1653 }
1654 
1655 static int snd_wss_dev_free(struct snd_device *device)
1656 {
1657 	struct snd_wss *chip = device->device_data;
1658 	return snd_wss_free(chip);
1659 }
1660 
1661 const char *snd_wss_chip_id(struct snd_wss *chip)
1662 {
1663 	switch (chip->hardware) {
1664 	case WSS_HW_CS4231:
1665 		return "CS4231";
1666 	case WSS_HW_CS4231A:
1667 		return "CS4231A";
1668 	case WSS_HW_CS4232:
1669 		return "CS4232";
1670 	case WSS_HW_CS4232A:
1671 		return "CS4232A";
1672 	case WSS_HW_CS4235:
1673 		return "CS4235";
1674 	case WSS_HW_CS4236:
1675 		return "CS4236";
1676 	case WSS_HW_CS4236B:
1677 		return "CS4236B";
1678 	case WSS_HW_CS4237B:
1679 		return "CS4237B";
1680 	case WSS_HW_CS4238B:
1681 		return "CS4238B";
1682 	case WSS_HW_CS4239:
1683 		return "CS4239";
1684 	case WSS_HW_INTERWAVE:
1685 		return "AMD InterWave";
1686 	case WSS_HW_OPL3SA2:
1687 		return chip->card->shortname;
1688 	case WSS_HW_AD1845:
1689 		return "AD1845";
1690 	case WSS_HW_OPTI93X:
1691 		return "OPTi 93x";
1692 	case WSS_HW_AD1847:
1693 		return "AD1847";
1694 	case WSS_HW_AD1848:
1695 		return "AD1848";
1696 	case WSS_HW_CS4248:
1697 		return "CS4248";
1698 	case WSS_HW_CMI8330:
1699 		return "CMI8330/C3D";
1700 	default:
1701 		return "???";
1702 	}
1703 }
1704 EXPORT_SYMBOL(snd_wss_chip_id);
1705 
1706 static int snd_wss_new(struct snd_card *card,
1707 			  unsigned short hardware,
1708 			  unsigned short hwshare,
1709 			  struct snd_wss **rchip)
1710 {
1711 	struct snd_wss *chip;
1712 
1713 	*rchip = NULL;
1714 	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1715 	if (chip == NULL)
1716 		return -ENOMEM;
1717 	chip->hardware = hardware;
1718 	chip->hwshare = hwshare;
1719 
1720 	spin_lock_init(&chip->reg_lock);
1721 	mutex_init(&chip->mce_mutex);
1722 	mutex_init(&chip->open_mutex);
1723 	chip->card = card;
1724 	chip->rate_constraint = snd_wss_xrate;
1725 	chip->set_playback_format = snd_wss_playback_format;
1726 	chip->set_capture_format = snd_wss_capture_format;
1727 	if (chip->hardware == WSS_HW_OPTI93X)
1728 		memcpy(&chip->image, &snd_opti93x_original_image,
1729 		       sizeof(snd_opti93x_original_image));
1730 	else
1731 		memcpy(&chip->image, &snd_wss_original_image,
1732 		       sizeof(snd_wss_original_image));
1733 	if (chip->hardware & WSS_HW_AD1848_MASK) {
1734 		chip->image[CS4231_PIN_CTRL] = 0;
1735 		chip->image[CS4231_TEST_INIT] = 0;
1736 	}
1737 
1738 	*rchip = chip;
1739 	return 0;
1740 }
1741 
1742 int snd_wss_create(struct snd_card *card,
1743 		      unsigned long port,
1744 		      unsigned long cport,
1745 		      int irq, int dma1, int dma2,
1746 		      unsigned short hardware,
1747 		      unsigned short hwshare,
1748 		      struct snd_wss **rchip)
1749 {
1750 	static struct snd_device_ops ops = {
1751 		.dev_free =	snd_wss_dev_free,
1752 	};
1753 	struct snd_wss *chip;
1754 	int err;
1755 
1756 	err = snd_wss_new(card, hardware, hwshare, &chip);
1757 	if (err < 0)
1758 		return err;
1759 
1760 	chip->irq = -1;
1761 	chip->dma1 = -1;
1762 	chip->dma2 = -1;
1763 
1764 	chip->res_port = request_region(port, 4, "WSS");
1765 	if (!chip->res_port) {
1766 		snd_printk(KERN_ERR "wss: can't grab port 0x%lx\n", port);
1767 		snd_wss_free(chip);
1768 		return -EBUSY;
1769 	}
1770 	chip->port = port;
1771 	if ((long)cport >= 0) {
1772 		chip->res_cport = request_region(cport, 8, "CS4232 Control");
1773 		if (!chip->res_cport) {
1774 			snd_printk(KERN_ERR
1775 				"wss: can't grab control port 0x%lx\n", cport);
1776 			snd_wss_free(chip);
1777 			return -ENODEV;
1778 		}
1779 	}
1780 	chip->cport = cport;
1781 	if (!(hwshare & WSS_HWSHARE_IRQ))
1782 		if (request_irq(irq, snd_wss_interrupt, IRQF_DISABLED,
1783 				"WSS", (void *) chip)) {
1784 			snd_printk(KERN_ERR "wss: can't grab IRQ %d\n", irq);
1785 			snd_wss_free(chip);
1786 			return -EBUSY;
1787 		}
1788 	chip->irq = irq;
1789 	if (!(hwshare & WSS_HWSHARE_DMA1) && request_dma(dma1, "WSS - 1")) {
1790 		snd_printk(KERN_ERR "wss: can't grab DMA1 %d\n", dma1);
1791 		snd_wss_free(chip);
1792 		return -EBUSY;
1793 	}
1794 	chip->dma1 = dma1;
1795 	if (!(hwshare & WSS_HWSHARE_DMA2) && dma1 != dma2 &&
1796 	      dma2 >= 0 && request_dma(dma2, "WSS - 2")) {
1797 		snd_printk(KERN_ERR "wss: can't grab DMA2 %d\n", dma2);
1798 		snd_wss_free(chip);
1799 		return -EBUSY;
1800 	}
1801 	if (dma1 == dma2 || dma2 < 0) {
1802 		chip->single_dma = 1;
1803 		chip->dma2 = chip->dma1;
1804 	} else
1805 		chip->dma2 = dma2;
1806 
1807 	if (hardware == WSS_HW_THINKPAD) {
1808 		chip->thinkpad_flag = 1;
1809 		chip->hardware = WSS_HW_DETECT; /* reset */
1810 		snd_wss_thinkpad_twiddle(chip, 1);
1811 	}
1812 
1813 	/* global setup */
1814 	if (snd_wss_probe(chip) < 0) {
1815 		snd_wss_free(chip);
1816 		return -ENODEV;
1817 	}
1818 	snd_wss_init(chip);
1819 
1820 #if 0
1821 	if (chip->hardware & WSS_HW_CS4232_MASK) {
1822 		if (chip->res_cport == NULL)
1823 			snd_printk("CS4232 control port features are not accessible\n");
1824 	}
1825 #endif
1826 
1827 	/* Register device */
1828 	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
1829 	if (err < 0) {
1830 		snd_wss_free(chip);
1831 		return err;
1832 	}
1833 
1834 #ifdef CONFIG_PM
1835 	/* Power Management */
1836 	chip->suspend = snd_wss_suspend;
1837 	chip->resume = snd_wss_resume;
1838 #endif
1839 
1840 	*rchip = chip;
1841 	return 0;
1842 }
1843 EXPORT_SYMBOL(snd_wss_create);
1844 
1845 static struct snd_pcm_ops snd_wss_playback_ops = {
1846 	.open =		snd_wss_playback_open,
1847 	.close =	snd_wss_playback_close,
1848 	.ioctl =	snd_pcm_lib_ioctl,
1849 	.hw_params =	snd_wss_playback_hw_params,
1850 	.hw_free =	snd_wss_playback_hw_free,
1851 	.prepare =	snd_wss_playback_prepare,
1852 	.trigger =	snd_wss_trigger,
1853 	.pointer =	snd_wss_playback_pointer,
1854 };
1855 
1856 static struct snd_pcm_ops snd_wss_capture_ops = {
1857 	.open =		snd_wss_capture_open,
1858 	.close =	snd_wss_capture_close,
1859 	.ioctl =	snd_pcm_lib_ioctl,
1860 	.hw_params =	snd_wss_capture_hw_params,
1861 	.hw_free =	snd_wss_capture_hw_free,
1862 	.prepare =	snd_wss_capture_prepare,
1863 	.trigger =	snd_wss_trigger,
1864 	.pointer =	snd_wss_capture_pointer,
1865 };
1866 
1867 int snd_wss_pcm(struct snd_wss *chip, int device, struct snd_pcm **rpcm)
1868 {
1869 	struct snd_pcm *pcm;
1870 	int err;
1871 
1872 	err = snd_pcm_new(chip->card, "WSS", device, 1, 1, &pcm);
1873 	if (err < 0)
1874 		return err;
1875 
1876 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_wss_playback_ops);
1877 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_wss_capture_ops);
1878 
1879 	/* global setup */
1880 	pcm->private_data = chip;
1881 	pcm->info_flags = 0;
1882 	if (chip->single_dma)
1883 		pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
1884 	if (chip->hardware != WSS_HW_INTERWAVE)
1885 		pcm->info_flags |= SNDRV_PCM_INFO_JOINT_DUPLEX;
1886 	strcpy(pcm->name, snd_wss_chip_id(chip));
1887 
1888 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1889 					      snd_dma_isa_data(),
1890 					      64*1024, chip->dma1 > 3 || chip->dma2 > 3 ? 128*1024 : 64*1024);
1891 
1892 	chip->pcm = pcm;
1893 	if (rpcm)
1894 		*rpcm = pcm;
1895 	return 0;
1896 }
1897 EXPORT_SYMBOL(snd_wss_pcm);
1898 
1899 static void snd_wss_timer_free(struct snd_timer *timer)
1900 {
1901 	struct snd_wss *chip = timer->private_data;
1902 	chip->timer = NULL;
1903 }
1904 
1905 int snd_wss_timer(struct snd_wss *chip, int device, struct snd_timer **rtimer)
1906 {
1907 	struct snd_timer *timer;
1908 	struct snd_timer_id tid;
1909 	int err;
1910 
1911 	/* Timer initialization */
1912 	tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1913 	tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1914 	tid.card = chip->card->number;
1915 	tid.device = device;
1916 	tid.subdevice = 0;
1917 	if ((err = snd_timer_new(chip->card, "CS4231", &tid, &timer)) < 0)
1918 		return err;
1919 	strcpy(timer->name, snd_wss_chip_id(chip));
1920 	timer->private_data = chip;
1921 	timer->private_free = snd_wss_timer_free;
1922 	timer->hw = snd_wss_timer_table;
1923 	chip->timer = timer;
1924 	if (rtimer)
1925 		*rtimer = timer;
1926 	return 0;
1927 }
1928 EXPORT_SYMBOL(snd_wss_timer);
1929 
1930 /*
1931  *  MIXER part
1932  */
1933 
1934 static int snd_wss_info_mux(struct snd_kcontrol *kcontrol,
1935 			    struct snd_ctl_elem_info *uinfo)
1936 {
1937 	static char *texts[4] = {
1938 		"Line", "Aux", "Mic", "Mix"
1939 	};
1940 	static char *opl3sa_texts[4] = {
1941 		"Line", "CD", "Mic", "Mix"
1942 	};
1943 	static char *gusmax_texts[4] = {
1944 		"Line", "Synth", "Mic", "Mix"
1945 	};
1946 	char **ptexts = texts;
1947 	struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
1948 
1949 	if (snd_BUG_ON(!chip->card))
1950 		return -EINVAL;
1951 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1952 	uinfo->count = 2;
1953 	uinfo->value.enumerated.items = 4;
1954 	if (uinfo->value.enumerated.item > 3)
1955 		uinfo->value.enumerated.item = 3;
1956 	if (!strcmp(chip->card->driver, "GUS MAX"))
1957 		ptexts = gusmax_texts;
1958 	switch (chip->hardware) {
1959 	case WSS_HW_INTERWAVE:
1960 		ptexts = gusmax_texts;
1961 		break;
1962 	case WSS_HW_OPL3SA2:
1963 		ptexts = opl3sa_texts;
1964 		break;
1965 	}
1966 	strcpy(uinfo->value.enumerated.name, ptexts[uinfo->value.enumerated.item]);
1967 	return 0;
1968 }
1969 
1970 static int snd_wss_get_mux(struct snd_kcontrol *kcontrol,
1971 			   struct snd_ctl_elem_value *ucontrol)
1972 {
1973 	struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
1974 	unsigned long flags;
1975 
1976 	spin_lock_irqsave(&chip->reg_lock, flags);
1977 	ucontrol->value.enumerated.item[0] = (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1978 	ucontrol->value.enumerated.item[1] = (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1979 	spin_unlock_irqrestore(&chip->reg_lock, flags);
1980 	return 0;
1981 }
1982 
1983 static int snd_wss_put_mux(struct snd_kcontrol *kcontrol,
1984 			   struct snd_ctl_elem_value *ucontrol)
1985 {
1986 	struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
1987 	unsigned long flags;
1988 	unsigned short left, right;
1989 	int change;
1990 
1991 	if (ucontrol->value.enumerated.item[0] > 3 ||
1992 	    ucontrol->value.enumerated.item[1] > 3)
1993 		return -EINVAL;
1994 	left = ucontrol->value.enumerated.item[0] << 6;
1995 	right = ucontrol->value.enumerated.item[1] << 6;
1996 	spin_lock_irqsave(&chip->reg_lock, flags);
1997 	left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1998 	right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1999 	change = left != chip->image[CS4231_LEFT_INPUT] ||
2000 		 right != chip->image[CS4231_RIGHT_INPUT];
2001 	snd_wss_out(chip, CS4231_LEFT_INPUT, left);
2002 	snd_wss_out(chip, CS4231_RIGHT_INPUT, right);
2003 	spin_unlock_irqrestore(&chip->reg_lock, flags);
2004 	return change;
2005 }
2006 
2007 int snd_wss_info_single(struct snd_kcontrol *kcontrol,
2008 			struct snd_ctl_elem_info *uinfo)
2009 {
2010 	int mask = (kcontrol->private_value >> 16) & 0xff;
2011 
2012 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
2013 	uinfo->count = 1;
2014 	uinfo->value.integer.min = 0;
2015 	uinfo->value.integer.max = mask;
2016 	return 0;
2017 }
2018 EXPORT_SYMBOL(snd_wss_info_single);
2019 
2020 int snd_wss_get_single(struct snd_kcontrol *kcontrol,
2021 		       struct snd_ctl_elem_value *ucontrol)
2022 {
2023 	struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
2024 	unsigned long flags;
2025 	int reg = kcontrol->private_value & 0xff;
2026 	int shift = (kcontrol->private_value >> 8) & 0xff;
2027 	int mask = (kcontrol->private_value >> 16) & 0xff;
2028 	int invert = (kcontrol->private_value >> 24) & 0xff;
2029 
2030 	spin_lock_irqsave(&chip->reg_lock, flags);
2031 	ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
2032 	spin_unlock_irqrestore(&chip->reg_lock, flags);
2033 	if (invert)
2034 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
2035 	return 0;
2036 }
2037 EXPORT_SYMBOL(snd_wss_get_single);
2038 
2039 int snd_wss_put_single(struct snd_kcontrol *kcontrol,
2040 		       struct snd_ctl_elem_value *ucontrol)
2041 {
2042 	struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
2043 	unsigned long flags;
2044 	int reg = kcontrol->private_value & 0xff;
2045 	int shift = (kcontrol->private_value >> 8) & 0xff;
2046 	int mask = (kcontrol->private_value >> 16) & 0xff;
2047 	int invert = (kcontrol->private_value >> 24) & 0xff;
2048 	int change;
2049 	unsigned short val;
2050 
2051 	val = (ucontrol->value.integer.value[0] & mask);
2052 	if (invert)
2053 		val = mask - val;
2054 	val <<= shift;
2055 	spin_lock_irqsave(&chip->reg_lock, flags);
2056 	val = (chip->image[reg] & ~(mask << shift)) | val;
2057 	change = val != chip->image[reg];
2058 	snd_wss_out(chip, reg, val);
2059 	spin_unlock_irqrestore(&chip->reg_lock, flags);
2060 	return change;
2061 }
2062 EXPORT_SYMBOL(snd_wss_put_single);
2063 
2064 int snd_wss_info_double(struct snd_kcontrol *kcontrol,
2065 			struct snd_ctl_elem_info *uinfo)
2066 {
2067 	int mask = (kcontrol->private_value >> 24) & 0xff;
2068 
2069 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
2070 	uinfo->count = 2;
2071 	uinfo->value.integer.min = 0;
2072 	uinfo->value.integer.max = mask;
2073 	return 0;
2074 }
2075 EXPORT_SYMBOL(snd_wss_info_double);
2076 
2077 int snd_wss_get_double(struct snd_kcontrol *kcontrol,
2078 		       struct snd_ctl_elem_value *ucontrol)
2079 {
2080 	struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
2081 	unsigned long flags;
2082 	int left_reg = kcontrol->private_value & 0xff;
2083 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
2084 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
2085 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
2086 	int mask = (kcontrol->private_value >> 24) & 0xff;
2087 	int invert = (kcontrol->private_value >> 22) & 1;
2088 
2089 	spin_lock_irqsave(&chip->reg_lock, flags);
2090 	ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
2091 	ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
2092 	spin_unlock_irqrestore(&chip->reg_lock, flags);
2093 	if (invert) {
2094 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
2095 		ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
2096 	}
2097 	return 0;
2098 }
2099 EXPORT_SYMBOL(snd_wss_get_double);
2100 
2101 int snd_wss_put_double(struct snd_kcontrol *kcontrol,
2102 		       struct snd_ctl_elem_value *ucontrol)
2103 {
2104 	struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
2105 	unsigned long flags;
2106 	int left_reg = kcontrol->private_value & 0xff;
2107 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
2108 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
2109 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
2110 	int mask = (kcontrol->private_value >> 24) & 0xff;
2111 	int invert = (kcontrol->private_value >> 22) & 1;
2112 	int change;
2113 	unsigned short val1, val2;
2114 
2115 	val1 = ucontrol->value.integer.value[0] & mask;
2116 	val2 = ucontrol->value.integer.value[1] & mask;
2117 	if (invert) {
2118 		val1 = mask - val1;
2119 		val2 = mask - val2;
2120 	}
2121 	val1 <<= shift_left;
2122 	val2 <<= shift_right;
2123 	spin_lock_irqsave(&chip->reg_lock, flags);
2124 	if (left_reg != right_reg) {
2125 		val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
2126 		val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
2127 		change = val1 != chip->image[left_reg] ||
2128 			 val2 != chip->image[right_reg];
2129 		snd_wss_out(chip, left_reg, val1);
2130 		snd_wss_out(chip, right_reg, val2);
2131 	} else {
2132 		mask = (mask << shift_left) | (mask << shift_right);
2133 		val1 = (chip->image[left_reg] & ~mask) | val1 | val2;
2134 		change = val1 != chip->image[left_reg];
2135 		snd_wss_out(chip, left_reg, val1);
2136 	}
2137 	spin_unlock_irqrestore(&chip->reg_lock, flags);
2138 	return change;
2139 }
2140 EXPORT_SYMBOL(snd_wss_put_double);
2141 
2142 static const DECLARE_TLV_DB_SCALE(db_scale_6bit, -9450, 150, 0);
2143 static const DECLARE_TLV_DB_SCALE(db_scale_5bit_12db_max, -3450, 150, 0);
2144 static const DECLARE_TLV_DB_SCALE(db_scale_rec_gain, 0, 150, 0);
2145 
2146 static struct snd_kcontrol_new snd_ad1848_controls[] = {
2147 WSS_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT,
2148 	   7, 7, 1, 1),
2149 WSS_DOUBLE_TLV("PCM Playback Volume", 0,
2150 	       CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 0, 0, 63, 1,
2151 	       db_scale_6bit),
2152 WSS_DOUBLE("Aux Playback Switch", 0,
2153 	   CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
2154 WSS_DOUBLE_TLV("Aux Playback Volume", 0,
2155 	       CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1,
2156 	       db_scale_5bit_12db_max),
2157 WSS_DOUBLE("Aux Playback Switch", 1,
2158 	   CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
2159 WSS_DOUBLE_TLV("Aux Playback Volume", 1,
2160 	       CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1,
2161 	       db_scale_5bit_12db_max),
2162 WSS_DOUBLE_TLV("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT,
2163 		0, 0, 15, 0, db_scale_rec_gain),
2164 {
2165 	.name = "Capture Source",
2166 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2167 	.info = snd_wss_info_mux,
2168 	.get = snd_wss_get_mux,
2169 	.put = snd_wss_put_mux,
2170 },
2171 WSS_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
2172 WSS_SINGLE_TLV("Loopback Capture Volume", 0, CS4231_LOOPBACK, 1, 63, 0,
2173 	       db_scale_6bit),
2174 };
2175 
2176 static struct snd_kcontrol_new snd_wss_controls[] = {
2177 WSS_DOUBLE("PCM Playback Switch", 0,
2178 		CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
2179 WSS_DOUBLE("PCM Playback Volume", 0,
2180 		CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
2181 WSS_DOUBLE("Line Playback Switch", 0,
2182 		CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
2183 WSS_DOUBLE("Line Playback Volume", 0,
2184 		CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
2185 WSS_DOUBLE("Aux Playback Switch", 0,
2186 		CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
2187 WSS_DOUBLE("Aux Playback Volume", 0,
2188 		CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
2189 WSS_DOUBLE("Aux Playback Switch", 1,
2190 		CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
2191 WSS_DOUBLE("Aux Playback Volume", 1,
2192 		CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
2193 WSS_SINGLE("Mono Playback Switch", 0,
2194 		CS4231_MONO_CTRL, 7, 1, 1),
2195 WSS_SINGLE("Mono Playback Volume", 0,
2196 		CS4231_MONO_CTRL, 0, 15, 1),
2197 WSS_SINGLE("Mono Output Playback Switch", 0,
2198 		CS4231_MONO_CTRL, 6, 1, 1),
2199 WSS_SINGLE("Mono Output Playback Bypass", 0,
2200 		CS4231_MONO_CTRL, 5, 1, 0),
2201 WSS_DOUBLE("Capture Volume", 0,
2202 		CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0, 15, 0),
2203 {
2204 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2205 	.name = "Capture Source",
2206 	.info = snd_wss_info_mux,
2207 	.get = snd_wss_get_mux,
2208 	.put = snd_wss_put_mux,
2209 },
2210 WSS_DOUBLE("Mic Boost", 0,
2211 		CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5, 1, 0),
2212 WSS_SINGLE("Loopback Capture Switch", 0,
2213 		CS4231_LOOPBACK, 0, 1, 0),
2214 WSS_SINGLE("Loopback Capture Volume", 0,
2215 		CS4231_LOOPBACK, 2, 63, 1)
2216 };
2217 
2218 static struct snd_kcontrol_new snd_opti93x_controls[] = {
2219 WSS_DOUBLE("Master Playback Switch", 0,
2220 		OPTi93X_OUT_LEFT, OPTi93X_OUT_RIGHT, 7, 7, 1, 1),
2221 WSS_DOUBLE("Master Playback Volume", 0,
2222 		OPTi93X_OUT_LEFT, OPTi93X_OUT_RIGHT, 1, 1, 31, 1),
2223 WSS_DOUBLE("PCM Playback Switch", 0,
2224 		CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
2225 WSS_DOUBLE("PCM Playback Volume", 0,
2226 		CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 0, 0, 31, 1),
2227 WSS_DOUBLE("FM Playback Switch", 0,
2228 		CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
2229 WSS_DOUBLE("FM Playback Volume", 0,
2230 		CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 1, 1, 15, 1),
2231 WSS_DOUBLE("Line Playback Switch", 0,
2232 		CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
2233 WSS_DOUBLE("Line Playback Volume", 0,
2234 		CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 0, 0, 15, 1),
2235 WSS_DOUBLE("Mic Playback Switch", 0,
2236 		OPTi93X_MIC_LEFT_INPUT, OPTi93X_MIC_RIGHT_INPUT, 7, 7, 1, 1),
2237 WSS_DOUBLE("Mic Playback Volume", 0,
2238 		OPTi93X_MIC_LEFT_INPUT, OPTi93X_MIC_RIGHT_INPUT, 1, 1, 15, 1),
2239 WSS_DOUBLE("Mic Boost", 0,
2240 		CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5, 1, 0),
2241 WSS_DOUBLE("CD Playback Switch", 0,
2242 		CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
2243 WSS_DOUBLE("CD Playback Volume", 0,
2244 		CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 1, 1, 15, 1),
2245 WSS_DOUBLE("Aux Playback Switch", 0,
2246 		OPTi931_AUX_LEFT_INPUT, OPTi931_AUX_RIGHT_INPUT, 7, 7, 1, 1),
2247 WSS_DOUBLE("Aux Playback Volume", 0,
2248 		OPTi931_AUX_LEFT_INPUT, OPTi931_AUX_RIGHT_INPUT, 1, 1, 15, 1),
2249 WSS_DOUBLE("Capture Volume", 0,
2250 		CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0, 15, 0),
2251 {
2252 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2253 	.name = "Capture Source",
2254 	.info = snd_wss_info_mux,
2255 	.get = snd_wss_get_mux,
2256 	.put = snd_wss_put_mux,
2257 }
2258 };
2259 
2260 int snd_wss_mixer(struct snd_wss *chip)
2261 {
2262 	struct snd_card *card;
2263 	unsigned int idx;
2264 	int err;
2265 
2266 	if (snd_BUG_ON(!chip || !chip->pcm))
2267 		return -EINVAL;
2268 
2269 	card = chip->card;
2270 
2271 	strcpy(card->mixername, chip->pcm->name);
2272 
2273 	if (chip->hardware == WSS_HW_OPTI93X)
2274 		for (idx = 0; idx < ARRAY_SIZE(snd_opti93x_controls); idx++) {
2275 			err = snd_ctl_add(card,
2276 					snd_ctl_new1(&snd_opti93x_controls[idx],
2277 						     chip));
2278 			if (err < 0)
2279 				return err;
2280 		}
2281 	else if (chip->hardware & WSS_HW_AD1848_MASK)
2282 		for (idx = 0; idx < ARRAY_SIZE(snd_ad1848_controls); idx++) {
2283 			err = snd_ctl_add(card,
2284 					snd_ctl_new1(&snd_ad1848_controls[idx],
2285 						     chip));
2286 			if (err < 0)
2287 				return err;
2288 		}
2289 	else
2290 		for (idx = 0; idx < ARRAY_SIZE(snd_wss_controls); idx++) {
2291 			err = snd_ctl_add(card,
2292 					snd_ctl_new1(&snd_wss_controls[idx],
2293 						     chip));
2294 			if (err < 0)
2295 				return err;
2296 		}
2297 	return 0;
2298 }
2299 EXPORT_SYMBOL(snd_wss_mixer);
2300 
2301 const struct snd_pcm_ops *snd_wss_get_pcm_ops(int direction)
2302 {
2303 	return direction == SNDRV_PCM_STREAM_PLAYBACK ?
2304 		&snd_wss_playback_ops : &snd_wss_capture_ops;
2305 }
2306 EXPORT_SYMBOL(snd_wss_get_pcm_ops);
2307 
2308 /*
2309  *  INIT part
2310  */
2311 
2312 static int __init alsa_wss_init(void)
2313 {
2314 	return 0;
2315 }
2316 
2317 static void __exit alsa_wss_exit(void)
2318 {
2319 }
2320 
2321 module_init(alsa_wss_init);
2322 module_exit(alsa_wss_exit);
2323