xref: /openbmc/linux/sound/isa/cs423x/cs4236_lib.c (revision 384740dc)
1 /*
2  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
3  *  Routines for control of CS4235/4236B/4237B/4238B/4239 chips
4  *
5  *  Note:
6  *     -----
7  *
8  *  Bugs:
9  *     -----
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 /*
28  *  Indirect control registers (CS4236B+)
29  *
30  *  C0
31  *     D8: WSS reset (all chips)
32  *
33  *  C1 (all chips except CS4236)
34  *     D7-D5: version
35  *     D4-D0: chip id
36  *             11101 - CS4235
37  *             01011 - CS4236B
38  *             01000 - CS4237B
39  *             01001 - CS4238B
40  *             11110 - CS4239
41  *
42  *  C2
43  *     D7-D4: 3D Space (CS4235,CS4237B,CS4238B,CS4239)
44  *     D3-D0: 3D Center (CS4237B); 3D Volume (CS4238B)
45  *
46  *  C3
47  *     D7: 3D Enable (CS4237B)
48  *     D6: 3D Mono Enable (CS4237B)
49  *     D5: 3D Serial Output (CS4237B,CS4238B)
50  *     D4: 3D Enable (CS4235,CS4238B,CS4239)
51  *
52  *  C4
53  *     D7: consumer serial port enable (CS4237B,CS4238B)
54  *     D6: channels status block reset (CS4237B,CS4238B)
55  *     D5: user bit in sub-frame of digital audio data (CS4237B,CS4238B)
56  *     D4: validity bit bit in sub-frame of digital audio data (CS4237B,CS4238B)
57  *
58  *  C5  lower channel status (digital serial data description) (CS4237B,CS4238B)
59  *     D7-D6: first two bits of category code
60  *     D5: lock
61  *     D4-D3: pre-emphasis (0 = none, 1 = 50/15us)
62  *     D2: copy/copyright (0 = copy inhibited)
63  *     D1: 0 = digital audio / 1 = non-digital audio
64  *
65  *  C6  upper channel status (digital serial data description) (CS4237B,CS4238B)
66  *     D7-D6: sample frequency (0 = 44.1kHz)
67  *     D5: generation status (0 = no indication, 1 = original/commercially precaptureed data)
68  *     D4-D0: category code (upper bits)
69  *
70  *  C7  reserved (must write 0)
71  *
72  *  C8  wavetable control
73  *     D7: volume control interrupt enable (CS4235,CS4239)
74  *     D6: hardware volume control format (CS4235,CS4239)
75  *     D3: wavetable serial port enable (all chips)
76  *     D2: DSP serial port switch (all chips)
77  *     D1: disable MCLK (all chips)
78  *     D0: force BRESET low (all chips)
79  *
80  */
81 
82 #include <asm/io.h>
83 #include <linux/delay.h>
84 #include <linux/init.h>
85 #include <linux/time.h>
86 #include <linux/wait.h>
87 #include <sound/core.h>
88 #include <sound/cs4231.h>
89 #include <sound/asoundef.h>
90 
91 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
92 MODULE_DESCRIPTION("Routines for control of CS4235/4236B/4237B/4238B/4239 chips");
93 MODULE_LICENSE("GPL");
94 
95 /*
96  *
97  */
98 
99 static unsigned char snd_cs4236_ext_map[18] = {
100 	/* CS4236_LEFT_LINE */		0xff,
101 	/* CS4236_RIGHT_LINE */		0xff,
102 	/* CS4236_LEFT_MIC */		0xdf,
103 	/* CS4236_RIGHT_MIC */		0xdf,
104 	/* CS4236_LEFT_MIX_CTRL */	0xe0 | 0x18,
105 	/* CS4236_RIGHT_MIX_CTRL */	0xe0,
106 	/* CS4236_LEFT_FM */		0xbf,
107 	/* CS4236_RIGHT_FM */		0xbf,
108 	/* CS4236_LEFT_DSP */		0xbf,
109 	/* CS4236_RIGHT_DSP */		0xbf,
110 	/* CS4236_RIGHT_LOOPBACK */	0xbf,
111 	/* CS4236_DAC_MUTE */		0xe0,
112 	/* CS4236_ADC_RATE */		0x01,	/* 48kHz */
113 	/* CS4236_DAC_RATE */		0x01,	/* 48kHz */
114 	/* CS4236_LEFT_MASTER */	0xbf,
115 	/* CS4236_RIGHT_MASTER */	0xbf,
116 	/* CS4236_LEFT_WAVE */		0xbf,
117 	/* CS4236_RIGHT_WAVE */		0xbf
118 };
119 
120 /*
121  *
122  */
123 
124 static void snd_cs4236_ctrl_out(struct snd_cs4231 *chip, unsigned char reg, unsigned char val)
125 {
126 	outb(reg, chip->cport + 3);
127 	outb(chip->cimage[reg] = val, chip->cport + 4);
128 }
129 
130 static unsigned char snd_cs4236_ctrl_in(struct snd_cs4231 *chip, unsigned char reg)
131 {
132 	outb(reg, chip->cport + 3);
133 	return inb(chip->cport + 4);
134 }
135 
136 /*
137  *  PCM
138  */
139 
140 #define CLOCKS 8
141 
142 static struct snd_ratnum clocks[CLOCKS] = {
143 	{ .num = 16934400, .den_min = 353, .den_max = 353, .den_step = 1 },
144 	{ .num = 16934400, .den_min = 529, .den_max = 529, .den_step = 1 },
145 	{ .num = 16934400, .den_min = 617, .den_max = 617, .den_step = 1 },
146 	{ .num = 16934400, .den_min = 1058, .den_max = 1058, .den_step = 1 },
147 	{ .num = 16934400, .den_min = 1764, .den_max = 1764, .den_step = 1 },
148 	{ .num = 16934400, .den_min = 2117, .den_max = 2117, .den_step = 1 },
149 	{ .num = 16934400, .den_min = 2558, .den_max = 2558, .den_step = 1 },
150 	{ .num = 16934400/16, .den_min = 21, .den_max = 192, .den_step = 1 }
151 };
152 
153 static struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = {
154 	.nrats = CLOCKS,
155 	.rats = clocks,
156 };
157 
158 static int snd_cs4236_xrate(struct snd_pcm_runtime *runtime)
159 {
160 	return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
161 					     &hw_constraints_clocks);
162 }
163 
164 static unsigned char divisor_to_rate_register(unsigned int divisor)
165 {
166 	switch (divisor) {
167 	case 353:	return 1;
168 	case 529:	return 2;
169 	case 617:	return 3;
170 	case 1058:	return 4;
171 	case 1764:	return 5;
172 	case 2117:	return 6;
173 	case 2558:	return 7;
174 	default:
175 		if (divisor < 21 || divisor > 192) {
176 			snd_BUG();
177 			return 192;
178 		}
179 		return divisor;
180 	}
181 }
182 
183 static void snd_cs4236_playback_format(struct snd_cs4231 *chip, struct snd_pcm_hw_params *params, unsigned char pdfr)
184 {
185 	unsigned long flags;
186 	unsigned char rate = divisor_to_rate_register(params->rate_den);
187 
188 	spin_lock_irqsave(&chip->reg_lock, flags);
189 	/* set fast playback format change and clean playback FIFO */
190 	snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | 0x10);
191 	snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, pdfr & 0xf0);
192 	snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] & ~0x10);
193 	snd_cs4236_ext_out(chip, CS4236_DAC_RATE, rate);
194 	spin_unlock_irqrestore(&chip->reg_lock, flags);
195 }
196 
197 static void snd_cs4236_capture_format(struct snd_cs4231 *chip, struct snd_pcm_hw_params *params, unsigned char cdfr)
198 {
199 	unsigned long flags;
200 	unsigned char rate = divisor_to_rate_register(params->rate_den);
201 
202 	spin_lock_irqsave(&chip->reg_lock, flags);
203 	/* set fast capture format change and clean capture FIFO */
204 	snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | 0x20);
205 	snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr & 0xf0);
206 	snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] & ~0x20);
207 	snd_cs4236_ext_out(chip, CS4236_ADC_RATE, rate);
208 	spin_unlock_irqrestore(&chip->reg_lock, flags);
209 }
210 
211 #ifdef CONFIG_PM
212 
213 static void snd_cs4236_suspend(struct snd_cs4231 *chip)
214 {
215 	int reg;
216 	unsigned long flags;
217 
218 	spin_lock_irqsave(&chip->reg_lock, flags);
219 	for (reg = 0; reg < 32; reg++)
220 		chip->image[reg] = snd_cs4231_in(chip, reg);
221 	for (reg = 0; reg < 18; reg++)
222 		chip->eimage[reg] = snd_cs4236_ext_in(chip, CS4236_I23VAL(reg));
223 	for (reg = 2; reg < 9; reg++)
224 		chip->cimage[reg] = snd_cs4236_ctrl_in(chip, reg);
225 	spin_unlock_irqrestore(&chip->reg_lock, flags);
226 }
227 
228 static void snd_cs4236_resume(struct snd_cs4231 *chip)
229 {
230 	int reg;
231 	unsigned long flags;
232 
233 	snd_cs4231_mce_up(chip);
234 	spin_lock_irqsave(&chip->reg_lock, flags);
235 	for (reg = 0; reg < 32; reg++) {
236 		switch (reg) {
237 		case CS4236_EXT_REG:
238 		case CS4231_VERSION:
239 		case 27:	/* why? CS4235 - master left */
240 		case 29:	/* why? CS4235 - master right */
241 			break;
242 		default:
243 			snd_cs4231_out(chip, reg, chip->image[reg]);
244 			break;
245 		}
246 	}
247 	for (reg = 0; reg < 18; reg++)
248 		snd_cs4236_ext_out(chip, CS4236_I23VAL(reg), chip->eimage[reg]);
249 	for (reg = 2; reg < 9; reg++) {
250 		switch (reg) {
251 		case 7:
252 			break;
253 		default:
254 			snd_cs4236_ctrl_out(chip, reg, chip->cimage[reg]);
255 		}
256 	}
257 	spin_unlock_irqrestore(&chip->reg_lock, flags);
258 	snd_cs4231_mce_down(chip);
259 }
260 
261 #endif /* CONFIG_PM */
262 
263 int snd_cs4236_create(struct snd_card *card,
264 		      unsigned long port,
265 		      unsigned long cport,
266 		      int irq, int dma1, int dma2,
267 		      unsigned short hardware,
268 		      unsigned short hwshare,
269 		      struct snd_cs4231 ** rchip)
270 {
271 	struct snd_cs4231 *chip;
272 	unsigned char ver1, ver2;
273 	unsigned int reg;
274 	int err;
275 
276 	*rchip = NULL;
277 	if (hardware == CS4231_HW_DETECT)
278 		hardware = CS4231_HW_DETECT3;
279 	if (cport < 0x100) {
280 		snd_printk("please, specify control port for CS4236+ chips\n");
281 		return -ENODEV;
282 	}
283 	if ((err = snd_cs4231_create(card, port, cport, irq, dma1, dma2, hardware, hwshare, &chip)) < 0)
284 		return err;
285 
286 	if (!(chip->hardware & CS4231_HW_CS4236B_MASK)) {
287 	        snd_printk("CS4236+: MODE3 and extended registers not available, hardware=0x%x\n",chip->hardware);
288 		snd_device_free(card, chip);
289 		return -ENODEV;
290 	}
291 #if 0
292 	{
293 		int idx;
294 		for (idx = 0; idx < 8; idx++)
295 			snd_printk("CD%i = 0x%x\n", idx, inb(chip->cport + idx));
296 		for (idx = 0; idx < 9; idx++)
297 			snd_printk("C%i = 0x%x\n", idx, snd_cs4236_ctrl_in(chip, idx));
298 	}
299 #endif
300 	ver1 = snd_cs4236_ctrl_in(chip, 1);
301 	ver2 = snd_cs4236_ext_in(chip, CS4236_VERSION);
302 	snd_printdd("CS4236: [0x%lx] C1 (version) = 0x%x, ext = 0x%x\n", cport, ver1, ver2);
303 	if (ver1 != ver2) {
304 		snd_printk("CS4236+ chip detected, but control port 0x%lx is not valid\n", cport);
305 		snd_device_free(card, chip);
306 		return -ENODEV;
307 	}
308 	snd_cs4236_ctrl_out(chip, 0, 0x00);
309 	snd_cs4236_ctrl_out(chip, 2, 0xff);
310 	snd_cs4236_ctrl_out(chip, 3, 0x00);
311 	snd_cs4236_ctrl_out(chip, 4, 0x80);
312 	snd_cs4236_ctrl_out(chip, 5, ((IEC958_AES1_CON_PCM_CODER & 3) << 6) | IEC958_AES0_CON_EMPHASIS_NONE);
313 	snd_cs4236_ctrl_out(chip, 6, IEC958_AES1_CON_PCM_CODER >> 2);
314 	snd_cs4236_ctrl_out(chip, 7, 0x00);
315 	/* 0x8c for C8 is valid for Turtle Beach Malibu - the IEC-958 output */
316 	/* is working with this setup, other hardware should have */
317 	/* different signal paths and this value should be selectable */
318 	/* in the future */
319 	snd_cs4236_ctrl_out(chip, 8, 0x8c);
320 	chip->rate_constraint = snd_cs4236_xrate;
321 	chip->set_playback_format = snd_cs4236_playback_format;
322 	chip->set_capture_format = snd_cs4236_capture_format;
323 #ifdef CONFIG_PM
324 	chip->suspend = snd_cs4236_suspend;
325 	chip->resume = snd_cs4236_resume;
326 #endif
327 
328 	/* initialize extended registers */
329 	for (reg = 0; reg < sizeof(snd_cs4236_ext_map); reg++)
330 		snd_cs4236_ext_out(chip, CS4236_I23VAL(reg), snd_cs4236_ext_map[reg]);
331 
332         /* initialize compatible but more featured registers */
333 	snd_cs4231_out(chip, CS4231_LEFT_INPUT, 0x40);
334 	snd_cs4231_out(chip, CS4231_RIGHT_INPUT, 0x40);
335 	snd_cs4231_out(chip, CS4231_AUX1_LEFT_INPUT, 0xff);
336 	snd_cs4231_out(chip, CS4231_AUX1_RIGHT_INPUT, 0xff);
337 	snd_cs4231_out(chip, CS4231_AUX2_LEFT_INPUT, 0xdf);
338 	snd_cs4231_out(chip, CS4231_AUX2_RIGHT_INPUT, 0xdf);
339 	snd_cs4231_out(chip, CS4231_RIGHT_LINE_IN, 0xff);
340 	snd_cs4231_out(chip, CS4231_LEFT_LINE_IN, 0xff);
341 	snd_cs4231_out(chip, CS4231_RIGHT_LINE_IN, 0xff);
342 	switch (chip->hardware) {
343 	case CS4231_HW_CS4235:
344 	case CS4231_HW_CS4239:
345 		snd_cs4231_out(chip, CS4235_LEFT_MASTER, 0xff);
346 		snd_cs4231_out(chip, CS4235_RIGHT_MASTER, 0xff);
347 		break;
348 	}
349 
350 	*rchip = chip;
351 	return 0;
352 }
353 
354 int snd_cs4236_pcm(struct snd_cs4231 *chip, int device, struct snd_pcm **rpcm)
355 {
356 	struct snd_pcm *pcm;
357 	int err;
358 
359 	if ((err = snd_cs4231_pcm(chip, device, &pcm)) < 0)
360 		return err;
361 	pcm->info_flags &= ~SNDRV_PCM_INFO_JOINT_DUPLEX;
362 	if (rpcm)
363 		*rpcm = pcm;
364 	return 0;
365 }
366 
367 /*
368  *  MIXER
369  */
370 
371 #define CS4236_SINGLE(xname, xindex, reg, shift, mask, invert) \
372 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
373   .info = snd_cs4236_info_single, \
374   .get = snd_cs4236_get_single, .put = snd_cs4236_put_single, \
375   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
376 
377 static int snd_cs4236_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
378 {
379 	int mask = (kcontrol->private_value >> 16) & 0xff;
380 
381 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
382 	uinfo->count = 1;
383 	uinfo->value.integer.min = 0;
384 	uinfo->value.integer.max = mask;
385 	return 0;
386 }
387 
388 static int snd_cs4236_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
389 {
390 	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
391 	unsigned long flags;
392 	int reg = kcontrol->private_value & 0xff;
393 	int shift = (kcontrol->private_value >> 8) & 0xff;
394 	int mask = (kcontrol->private_value >> 16) & 0xff;
395 	int invert = (kcontrol->private_value >> 24) & 0xff;
396 
397 	spin_lock_irqsave(&chip->reg_lock, flags);
398 	ucontrol->value.integer.value[0] = (chip->eimage[CS4236_REG(reg)] >> shift) & mask;
399 	spin_unlock_irqrestore(&chip->reg_lock, flags);
400 	if (invert)
401 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
402 	return 0;
403 }
404 
405 static int snd_cs4236_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
406 {
407 	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
408 	unsigned long flags;
409 	int reg = kcontrol->private_value & 0xff;
410 	int shift = (kcontrol->private_value >> 8) & 0xff;
411 	int mask = (kcontrol->private_value >> 16) & 0xff;
412 	int invert = (kcontrol->private_value >> 24) & 0xff;
413 	int change;
414 	unsigned short val;
415 
416 	val = (ucontrol->value.integer.value[0] & mask);
417 	if (invert)
418 		val = mask - val;
419 	val <<= shift;
420 	spin_lock_irqsave(&chip->reg_lock, flags);
421 	val = (chip->eimage[CS4236_REG(reg)] & ~(mask << shift)) | val;
422 	change = val != chip->eimage[CS4236_REG(reg)];
423 	snd_cs4236_ext_out(chip, reg, val);
424 	spin_unlock_irqrestore(&chip->reg_lock, flags);
425 	return change;
426 }
427 
428 #define CS4236_SINGLEC(xname, xindex, reg, shift, mask, invert) \
429 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
430   .info = snd_cs4236_info_single, \
431   .get = snd_cs4236_get_singlec, .put = snd_cs4236_put_singlec, \
432   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
433 
434 static int snd_cs4236_get_singlec(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
435 {
436 	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
437 	unsigned long flags;
438 	int reg = kcontrol->private_value & 0xff;
439 	int shift = (kcontrol->private_value >> 8) & 0xff;
440 	int mask = (kcontrol->private_value >> 16) & 0xff;
441 	int invert = (kcontrol->private_value >> 24) & 0xff;
442 
443 	spin_lock_irqsave(&chip->reg_lock, flags);
444 	ucontrol->value.integer.value[0] = (chip->cimage[reg] >> shift) & mask;
445 	spin_unlock_irqrestore(&chip->reg_lock, flags);
446 	if (invert)
447 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
448 	return 0;
449 }
450 
451 static int snd_cs4236_put_singlec(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
452 {
453 	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
454 	unsigned long flags;
455 	int reg = kcontrol->private_value & 0xff;
456 	int shift = (kcontrol->private_value >> 8) & 0xff;
457 	int mask = (kcontrol->private_value >> 16) & 0xff;
458 	int invert = (kcontrol->private_value >> 24) & 0xff;
459 	int change;
460 	unsigned short val;
461 
462 	val = (ucontrol->value.integer.value[0] & mask);
463 	if (invert)
464 		val = mask - val;
465 	val <<= shift;
466 	spin_lock_irqsave(&chip->reg_lock, flags);
467 	val = (chip->cimage[reg] & ~(mask << shift)) | val;
468 	change = val != chip->cimage[reg];
469 	snd_cs4236_ctrl_out(chip, reg, val);
470 	spin_unlock_irqrestore(&chip->reg_lock, flags);
471 	return change;
472 }
473 
474 #define CS4236_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
475 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
476   .info = snd_cs4236_info_double, \
477   .get = snd_cs4236_get_double, .put = snd_cs4236_put_double, \
478   .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
479 
480 static int snd_cs4236_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
481 {
482 	int mask = (kcontrol->private_value >> 24) & 0xff;
483 
484 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
485 	uinfo->count = 2;
486 	uinfo->value.integer.min = 0;
487 	uinfo->value.integer.max = mask;
488 	return 0;
489 }
490 
491 static int snd_cs4236_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
492 {
493 	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
494 	unsigned long flags;
495 	int left_reg = kcontrol->private_value & 0xff;
496 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
497 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
498 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
499 	int mask = (kcontrol->private_value >> 24) & 0xff;
500 	int invert = (kcontrol->private_value >> 22) & 1;
501 
502 	spin_lock_irqsave(&chip->reg_lock, flags);
503 	ucontrol->value.integer.value[0] = (chip->eimage[CS4236_REG(left_reg)] >> shift_left) & mask;
504 	ucontrol->value.integer.value[1] = (chip->eimage[CS4236_REG(right_reg)] >> shift_right) & mask;
505 	spin_unlock_irqrestore(&chip->reg_lock, flags);
506 	if (invert) {
507 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
508 		ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
509 	}
510 	return 0;
511 }
512 
513 static int snd_cs4236_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
514 {
515 	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
516 	unsigned long flags;
517 	int left_reg = kcontrol->private_value & 0xff;
518 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
519 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
520 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
521 	int mask = (kcontrol->private_value >> 24) & 0xff;
522 	int invert = (kcontrol->private_value >> 22) & 1;
523 	int change;
524 	unsigned short val1, val2;
525 
526 	val1 = ucontrol->value.integer.value[0] & mask;
527 	val2 = ucontrol->value.integer.value[1] & mask;
528 	if (invert) {
529 		val1 = mask - val1;
530 		val2 = mask - val2;
531 	}
532 	val1 <<= shift_left;
533 	val2 <<= shift_right;
534 	spin_lock_irqsave(&chip->reg_lock, flags);
535 	if (left_reg != right_reg) {
536 		val1 = (chip->eimage[CS4236_REG(left_reg)] & ~(mask << shift_left)) | val1;
537 		val2 = (chip->eimage[CS4236_REG(right_reg)] & ~(mask << shift_right)) | val2;
538 		change = val1 != chip->eimage[CS4236_REG(left_reg)] || val2 != chip->eimage[CS4236_REG(right_reg)];
539 		snd_cs4236_ext_out(chip, left_reg, val1);
540 		snd_cs4236_ext_out(chip, right_reg, val2);
541 	} else {
542 		val1 = (chip->eimage[CS4236_REG(left_reg)] & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
543 		change = val1 != chip->eimage[CS4236_REG(left_reg)];
544 		snd_cs4236_ext_out(chip, left_reg, val1);
545 	}
546 	spin_unlock_irqrestore(&chip->reg_lock, flags);
547 	return change;
548 }
549 
550 #define CS4236_DOUBLE1(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
551 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
552   .info = snd_cs4236_info_double, \
553   .get = snd_cs4236_get_double1, .put = snd_cs4236_put_double1, \
554   .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
555 
556 static int snd_cs4236_get_double1(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
557 {
558 	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
559 	unsigned long flags;
560 	int left_reg = kcontrol->private_value & 0xff;
561 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
562 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
563 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
564 	int mask = (kcontrol->private_value >> 24) & 0xff;
565 	int invert = (kcontrol->private_value >> 22) & 1;
566 
567 	spin_lock_irqsave(&chip->reg_lock, flags);
568 	ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
569 	ucontrol->value.integer.value[1] = (chip->eimage[CS4236_REG(right_reg)] >> shift_right) & mask;
570 	spin_unlock_irqrestore(&chip->reg_lock, flags);
571 	if (invert) {
572 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
573 		ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
574 	}
575 	return 0;
576 }
577 
578 static int snd_cs4236_put_double1(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
579 {
580 	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
581 	unsigned long flags;
582 	int left_reg = kcontrol->private_value & 0xff;
583 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
584 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
585 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
586 	int mask = (kcontrol->private_value >> 24) & 0xff;
587 	int invert = (kcontrol->private_value >> 22) & 1;
588 	int change;
589 	unsigned short val1, val2;
590 
591 	val1 = ucontrol->value.integer.value[0] & mask;
592 	val2 = ucontrol->value.integer.value[1] & mask;
593 	if (invert) {
594 		val1 = mask - val1;
595 		val2 = mask - val2;
596 	}
597 	val1 <<= shift_left;
598 	val2 <<= shift_right;
599 	spin_lock_irqsave(&chip->reg_lock, flags);
600 	val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
601 	val2 = (chip->eimage[CS4236_REG(right_reg)] & ~(mask << shift_right)) | val2;
602 	change = val1 != chip->image[left_reg] || val2 != chip->eimage[CS4236_REG(right_reg)];
603 	snd_cs4231_out(chip, left_reg, val1);
604 	snd_cs4236_ext_out(chip, right_reg, val2);
605 	spin_unlock_irqrestore(&chip->reg_lock, flags);
606 	return change;
607 }
608 
609 #define CS4236_MASTER_DIGITAL(xname, xindex) \
610 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
611   .info = snd_cs4236_info_double, \
612   .get = snd_cs4236_get_master_digital, .put = snd_cs4236_put_master_digital, \
613   .private_value = 71 << 24 }
614 
615 static inline int snd_cs4236_mixer_master_digital_invert_volume(int vol)
616 {
617 	return (vol < 64) ? 63 - vol : 64 + (71 - vol);
618 }
619 
620 static int snd_cs4236_get_master_digital(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
621 {
622 	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
623 	unsigned long flags;
624 
625 	spin_lock_irqsave(&chip->reg_lock, flags);
626 	ucontrol->value.integer.value[0] = snd_cs4236_mixer_master_digital_invert_volume(chip->eimage[CS4236_REG(CS4236_LEFT_MASTER)] & 0x7f);
627 	ucontrol->value.integer.value[1] = snd_cs4236_mixer_master_digital_invert_volume(chip->eimage[CS4236_REG(CS4236_RIGHT_MASTER)] & 0x7f);
628 	spin_unlock_irqrestore(&chip->reg_lock, flags);
629 	return 0;
630 }
631 
632 static int snd_cs4236_put_master_digital(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
633 {
634 	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
635 	unsigned long flags;
636 	int change;
637 	unsigned short val1, val2;
638 
639 	val1 = snd_cs4236_mixer_master_digital_invert_volume(ucontrol->value.integer.value[0] & 0x7f);
640 	val2 = snd_cs4236_mixer_master_digital_invert_volume(ucontrol->value.integer.value[1] & 0x7f);
641 	spin_lock_irqsave(&chip->reg_lock, flags);
642 	val1 = (chip->eimage[CS4236_REG(CS4236_LEFT_MASTER)] & ~0x7f) | val1;
643 	val2 = (chip->eimage[CS4236_REG(CS4236_RIGHT_MASTER)] & ~0x7f) | val2;
644 	change = val1 != chip->eimage[CS4236_REG(CS4236_LEFT_MASTER)] || val2 != chip->eimage[CS4236_REG(CS4236_RIGHT_MASTER)];
645 	snd_cs4236_ext_out(chip, CS4236_LEFT_MASTER, val1);
646 	snd_cs4236_ext_out(chip, CS4236_RIGHT_MASTER, val2);
647 	spin_unlock_irqrestore(&chip->reg_lock, flags);
648 	return change;
649 }
650 
651 #define CS4235_OUTPUT_ACCU(xname, xindex) \
652 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
653   .info = snd_cs4236_info_double, \
654   .get = snd_cs4235_get_output_accu, .put = snd_cs4235_put_output_accu, \
655   .private_value = 3 << 24 }
656 
657 static inline int snd_cs4235_mixer_output_accu_get_volume(int vol)
658 {
659 	switch ((vol >> 5) & 3) {
660 	case 0: return 1;
661 	case 1: return 3;
662 	case 2: return 2;
663 	case 3: return 0;
664  	}
665 	return 3;
666 }
667 
668 static inline int snd_cs4235_mixer_output_accu_set_volume(int vol)
669 {
670 	switch (vol & 3) {
671 	case 0: return 3 << 5;
672 	case 1: return 0 << 5;
673 	case 2: return 2 << 5;
674 	case 3: return 1 << 5;
675 	}
676 	return 1 << 5;
677 }
678 
679 static int snd_cs4235_get_output_accu(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
680 {
681 	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
682 	unsigned long flags;
683 
684 	spin_lock_irqsave(&chip->reg_lock, flags);
685 	ucontrol->value.integer.value[0] = snd_cs4235_mixer_output_accu_get_volume(chip->image[CS4235_LEFT_MASTER]);
686 	ucontrol->value.integer.value[1] = snd_cs4235_mixer_output_accu_get_volume(chip->image[CS4235_RIGHT_MASTER]);
687 	spin_unlock_irqrestore(&chip->reg_lock, flags);
688 	return 0;
689 }
690 
691 static int snd_cs4235_put_output_accu(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
692 {
693 	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
694 	unsigned long flags;
695 	int change;
696 	unsigned short val1, val2;
697 
698 	val1 = snd_cs4235_mixer_output_accu_set_volume(ucontrol->value.integer.value[0]);
699 	val2 = snd_cs4235_mixer_output_accu_set_volume(ucontrol->value.integer.value[1]);
700 	spin_lock_irqsave(&chip->reg_lock, flags);
701 	val1 = (chip->image[CS4235_LEFT_MASTER] & ~(3 << 5)) | val1;
702 	val2 = (chip->image[CS4235_RIGHT_MASTER] & ~(3 << 5)) | val2;
703 	change = val1 != chip->image[CS4235_LEFT_MASTER] || val2 != chip->image[CS4235_RIGHT_MASTER];
704 	snd_cs4231_out(chip, CS4235_LEFT_MASTER, val1);
705 	snd_cs4231_out(chip, CS4235_RIGHT_MASTER, val2);
706 	spin_unlock_irqrestore(&chip->reg_lock, flags);
707 	return change;
708 }
709 
710 static struct snd_kcontrol_new snd_cs4236_controls[] = {
711 
712 CS4236_DOUBLE("Master Digital Playback Switch", 0, CS4236_LEFT_MASTER, CS4236_RIGHT_MASTER, 7, 7, 1, 1),
713 CS4236_DOUBLE("Master Digital Capture Switch", 0, CS4236_DAC_MUTE, CS4236_DAC_MUTE, 7, 6, 1, 1),
714 CS4236_MASTER_DIGITAL("Master Digital Volume", 0),
715 
716 CS4236_DOUBLE("Capture Boost Volume", 0, CS4236_LEFT_MIX_CTRL, CS4236_RIGHT_MIX_CTRL, 5, 5, 3, 1),
717 
718 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
719 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
720 
721 CS4236_DOUBLE("DSP Playback Switch", 0, CS4236_LEFT_DSP, CS4236_RIGHT_DSP, 7, 7, 1, 1),
722 CS4236_DOUBLE("DSP Playback Volume", 0, CS4236_LEFT_DSP, CS4236_RIGHT_DSP, 0, 0, 63, 1),
723 
724 CS4236_DOUBLE("FM Playback Switch", 0, CS4236_LEFT_FM, CS4236_RIGHT_FM, 7, 7, 1, 1),
725 CS4236_DOUBLE("FM Playback Volume", 0, CS4236_LEFT_FM, CS4236_RIGHT_FM, 0, 0, 63, 1),
726 
727 CS4236_DOUBLE("Wavetable Playback Switch", 0, CS4236_LEFT_WAVE, CS4236_RIGHT_WAVE, 7, 7, 1, 1),
728 CS4236_DOUBLE("Wavetable Playback Volume", 0, CS4236_LEFT_WAVE, CS4236_RIGHT_WAVE, 0, 0, 63, 1),
729 
730 CS4231_DOUBLE("Synth Playback Switch", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
731 CS4231_DOUBLE("Synth Volume", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
732 CS4231_DOUBLE("Synth Capture Switch", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 6, 6, 1, 1),
733 CS4231_DOUBLE("Synth Capture Bypass", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 5, 5, 1, 1),
734 
735 CS4236_DOUBLE("Mic Playback Switch", 0, CS4236_LEFT_MIC, CS4236_RIGHT_MIC, 6, 6, 1, 1),
736 CS4236_DOUBLE("Mic Capture Switch", 0, CS4236_LEFT_MIC, CS4236_RIGHT_MIC, 7, 7, 1, 1),
737 CS4236_DOUBLE("Mic Volume", 0, CS4236_LEFT_MIC, CS4236_RIGHT_MIC, 0, 0, 31, 1),
738 CS4236_DOUBLE("Mic Playback Boost", 0, CS4236_LEFT_MIC, CS4236_RIGHT_MIC, 5, 5, 1, 0),
739 
740 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
741 CS4231_DOUBLE("Line Volume", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
742 CS4231_DOUBLE("Line Capture Switch", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 6, 6, 1, 1),
743 CS4231_DOUBLE("Line Capture Bypass", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 5, 5, 1, 1),
744 
745 CS4231_DOUBLE("CD Playback Switch", 0, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
746 CS4231_DOUBLE("CD Volume", 0, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
747 CS4231_DOUBLE("CD Capture Switch", 0, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 6, 6, 1, 1),
748 
749 CS4236_DOUBLE1("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, CS4236_RIGHT_MIX_CTRL, 6, 7, 1, 1),
750 CS4236_DOUBLE1("Mono Playback Switch", 0, CS4231_MONO_CTRL, CS4236_LEFT_MIX_CTRL, 7, 7, 1, 1),
751 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
752 CS4231_SINGLE("Mono Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
753 
754 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0, 15, 0),
755 CS4231_DOUBLE("Analog Loopback Capture Switch", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 7, 7, 1, 0),
756 
757 CS4231_SINGLE("Digital Loopback Playback Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
758 CS4236_DOUBLE1("Digital Loopback Playback Volume", 0, CS4231_LOOPBACK, CS4236_RIGHT_LOOPBACK, 2, 0, 63, 1)
759 };
760 
761 static struct snd_kcontrol_new snd_cs4235_controls[] = {
762 
763 CS4231_DOUBLE("Master Switch", 0, CS4235_LEFT_MASTER, CS4235_RIGHT_MASTER, 7, 7, 1, 1),
764 CS4231_DOUBLE("Master Volume", 0, CS4235_LEFT_MASTER, CS4235_RIGHT_MASTER, 0, 0, 31, 1),
765 
766 CS4235_OUTPUT_ACCU("Playback Volume", 0),
767 
768 CS4236_DOUBLE("Master Digital Playback Switch", 0, CS4236_LEFT_MASTER, CS4236_RIGHT_MASTER, 7, 7, 1, 1),
769 CS4236_DOUBLE("Master Digital Capture Switch", 0, CS4236_DAC_MUTE, CS4236_DAC_MUTE, 7, 6, 1, 1),
770 CS4236_MASTER_DIGITAL("Master Digital Volume", 0),
771 
772 CS4231_DOUBLE("Master Digital Playback Switch", 1, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
773 CS4231_DOUBLE("Master Digital Capture Switch", 1, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 6, 6, 1, 1),
774 CS4231_DOUBLE("Master Digital Volume", 1, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
775 
776 CS4236_DOUBLE("Capture Volume", 0, CS4236_LEFT_MIX_CTRL, CS4236_RIGHT_MIX_CTRL, 5, 5, 3, 1),
777 
778 CS4231_DOUBLE("PCM Switch", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
779 CS4231_DOUBLE("PCM Volume", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
780 
781 CS4236_DOUBLE("DSP Switch", 0, CS4236_LEFT_DSP, CS4236_RIGHT_DSP, 7, 7, 1, 1),
782 
783 CS4236_DOUBLE("FM Switch", 0, CS4236_LEFT_FM, CS4236_RIGHT_FM, 7, 7, 1, 1),
784 
785 CS4236_DOUBLE("Wavetable Switch", 0, CS4236_LEFT_WAVE, CS4236_RIGHT_WAVE, 7, 7, 1, 1),
786 
787 CS4236_DOUBLE("Mic Capture Switch", 0, CS4236_LEFT_MIC, CS4236_RIGHT_MIC, 7, 7, 1, 1),
788 CS4236_DOUBLE("Mic Playback Switch", 0, CS4236_LEFT_MIC, CS4236_RIGHT_MIC, 6, 6, 1, 1),
789 CS4236_SINGLE("Mic Volume", 0, CS4236_LEFT_MIC, 0, 31, 1),
790 CS4236_SINGLE("Mic Playback Boost", 0, CS4236_LEFT_MIC, 5, 1, 0),
791 
792 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
793 CS4231_DOUBLE("Aux Capture Switch", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 6, 6, 1, 1),
794 CS4231_DOUBLE("Aux Volume", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
795 
796 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
797 CS4231_DOUBLE("Aux Capture Switch", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 6, 6, 1, 1),
798 CS4231_DOUBLE("Aux Volume", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
799 
800 CS4236_DOUBLE1("Master Mono Switch", 0, CS4231_MONO_CTRL, CS4236_RIGHT_MIX_CTRL, 6, 7, 1, 1),
801 
802 CS4236_DOUBLE1("Mono Switch", 0, CS4231_MONO_CTRL, CS4236_LEFT_MIX_CTRL, 7, 7, 1, 1),
803 CS4231_SINGLE("Mono Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
804 
805 CS4231_DOUBLE("Analog Loopback Switch", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 7, 7, 1, 0),
806 };
807 
808 #define CS4236_IEC958_ENABLE(xname, xindex) \
809 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
810   .info = snd_cs4236_info_single, \
811   .get = snd_cs4236_get_iec958_switch, .put = snd_cs4236_put_iec958_switch, \
812   .private_value = 1 << 16 }
813 
814 static int snd_cs4236_get_iec958_switch(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
815 {
816 	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
817 	unsigned long flags;
818 
819 	spin_lock_irqsave(&chip->reg_lock, flags);
820 	ucontrol->value.integer.value[0] = chip->image[CS4231_ALT_FEATURE_1] & 0x02 ? 1 : 0;
821 #if 0
822 	printk("get valid: ALT = 0x%x, C3 = 0x%x, C4 = 0x%x, C5 = 0x%x, C6 = 0x%x, C8 = 0x%x\n",
823 			snd_cs4231_in(chip, CS4231_ALT_FEATURE_1),
824 			snd_cs4236_ctrl_in(chip, 3),
825 			snd_cs4236_ctrl_in(chip, 4),
826 			snd_cs4236_ctrl_in(chip, 5),
827 			snd_cs4236_ctrl_in(chip, 6),
828 			snd_cs4236_ctrl_in(chip, 8));
829 #endif
830 	spin_unlock_irqrestore(&chip->reg_lock, flags);
831 	return 0;
832 }
833 
834 static int snd_cs4236_put_iec958_switch(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
835 {
836 	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
837 	unsigned long flags;
838 	int change;
839 	unsigned short enable, val;
840 
841 	enable = ucontrol->value.integer.value[0] & 1;
842 
843 	mutex_lock(&chip->mce_mutex);
844 	snd_cs4231_mce_up(chip);
845 	spin_lock_irqsave(&chip->reg_lock, flags);
846 	val = (chip->image[CS4231_ALT_FEATURE_1] & ~0x0e) | (0<<2) | (enable << 1);
847 	change = val != chip->image[CS4231_ALT_FEATURE_1];
848 	snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, val);
849 	val = snd_cs4236_ctrl_in(chip, 4) | 0xc0;
850 	snd_cs4236_ctrl_out(chip, 4, val);
851 	udelay(100);
852 	val &= ~0x40;
853 	snd_cs4236_ctrl_out(chip, 4, val);
854 	spin_unlock_irqrestore(&chip->reg_lock, flags);
855 	snd_cs4231_mce_down(chip);
856 	mutex_unlock(&chip->mce_mutex);
857 
858 #if 0
859 	printk("set valid: ALT = 0x%x, C3 = 0x%x, C4 = 0x%x, C5 = 0x%x, C6 = 0x%x, C8 = 0x%x\n",
860 			snd_cs4231_in(chip, CS4231_ALT_FEATURE_1),
861 			snd_cs4236_ctrl_in(chip, 3),
862 			snd_cs4236_ctrl_in(chip, 4),
863 			snd_cs4236_ctrl_in(chip, 5),
864 			snd_cs4236_ctrl_in(chip, 6),
865 			snd_cs4236_ctrl_in(chip, 8));
866 #endif
867 	return change;
868 }
869 
870 static struct snd_kcontrol_new snd_cs4236_iec958_controls[] = {
871 CS4236_IEC958_ENABLE("IEC958 Output Enable", 0),
872 CS4236_SINGLEC("IEC958 Output Validity", 0, 4, 4, 1, 0),
873 CS4236_SINGLEC("IEC958 Output User", 0, 4, 5, 1, 0),
874 CS4236_SINGLEC("IEC958 Output CSBR", 0, 4, 6, 1, 0),
875 CS4236_SINGLEC("IEC958 Output Channel Status Low", 0, 5, 1, 127, 0),
876 CS4236_SINGLEC("IEC958 Output Channel Status High", 0, 6, 0, 255, 0)
877 };
878 
879 static struct snd_kcontrol_new snd_cs4236_3d_controls_cs4235[] = {
880 CS4236_SINGLEC("3D Control - Switch", 0, 3, 4, 1, 0),
881 CS4236_SINGLEC("3D Control - Space", 0, 2, 4, 15, 1)
882 };
883 
884 static struct snd_kcontrol_new snd_cs4236_3d_controls_cs4237[] = {
885 CS4236_SINGLEC("3D Control - Switch", 0, 3, 7, 1, 0),
886 CS4236_SINGLEC("3D Control - Space", 0, 2, 4, 15, 1),
887 CS4236_SINGLEC("3D Control - Center", 0, 2, 0, 15, 1),
888 CS4236_SINGLEC("3D Control - Mono", 0, 3, 6, 1, 0),
889 CS4236_SINGLEC("3D Control - IEC958", 0, 3, 5, 1, 0)
890 };
891 
892 static struct snd_kcontrol_new snd_cs4236_3d_controls_cs4238[] = {
893 CS4236_SINGLEC("3D Control - Switch", 0, 3, 4, 1, 0),
894 CS4236_SINGLEC("3D Control - Space", 0, 2, 4, 15, 1),
895 CS4236_SINGLEC("3D Control - Volume", 0, 2, 0, 15, 1),
896 CS4236_SINGLEC("3D Control - IEC958", 0, 3, 5, 1, 0)
897 };
898 
899 int snd_cs4236_mixer(struct snd_cs4231 *chip)
900 {
901 	struct snd_card *card;
902 	unsigned int idx, count;
903 	int err;
904 	struct snd_kcontrol_new *kcontrol;
905 
906 	snd_assert(chip != NULL && chip->card != NULL, return -EINVAL);
907 	card = chip->card;
908 	strcpy(card->mixername, snd_cs4231_chip_id(chip));
909 
910 	if (chip->hardware == CS4231_HW_CS4235 ||
911 	    chip->hardware == CS4231_HW_CS4239) {
912 		for (idx = 0; idx < ARRAY_SIZE(snd_cs4235_controls); idx++) {
913 			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4235_controls[idx], chip))) < 0)
914 				return err;
915 		}
916 	} else {
917 		for (idx = 0; idx < ARRAY_SIZE(snd_cs4236_controls); idx++) {
918 			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4236_controls[idx], chip))) < 0)
919 				return err;
920 		}
921 	}
922 	switch (chip->hardware) {
923 	case CS4231_HW_CS4235:
924 	case CS4231_HW_CS4239:
925 		count = ARRAY_SIZE(snd_cs4236_3d_controls_cs4235);
926 		kcontrol = snd_cs4236_3d_controls_cs4235;
927 		break;
928 	case CS4231_HW_CS4237B:
929 		count = ARRAY_SIZE(snd_cs4236_3d_controls_cs4237);
930 		kcontrol = snd_cs4236_3d_controls_cs4237;
931 		break;
932 	case CS4231_HW_CS4238B:
933 		count = ARRAY_SIZE(snd_cs4236_3d_controls_cs4238);
934 		kcontrol = snd_cs4236_3d_controls_cs4238;
935 		break;
936 	default:
937 		count = 0;
938 		kcontrol = NULL;
939 	}
940 	for (idx = 0; idx < count; idx++, kcontrol++) {
941 		if ((err = snd_ctl_add(card, snd_ctl_new1(kcontrol, chip))) < 0)
942 			return err;
943 	}
944 	if (chip->hardware == CS4231_HW_CS4237B ||
945 	    chip->hardware == CS4231_HW_CS4238B) {
946 		for (idx = 0; idx < ARRAY_SIZE(snd_cs4236_iec958_controls); idx++) {
947 			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4236_iec958_controls[idx], chip))) < 0)
948 				return err;
949 		}
950 	}
951 	return 0;
952 }
953 
954 EXPORT_SYMBOL(snd_cs4236_create);
955 EXPORT_SYMBOL(snd_cs4236_pcm);
956 EXPORT_SYMBOL(snd_cs4236_mixer);
957 
958 /*
959  *  INIT part
960  */
961 
962 static int __init alsa_cs4236_init(void)
963 {
964 	return 0;
965 }
966 
967 static void __exit alsa_cs4236_exit(void)
968 {
969 }
970 
971 module_init(alsa_cs4236_init)
972 module_exit(alsa_cs4236_exit)
973