[ALSA] cs4231-lib: improved waiting after mce_down
[linux-2.6.git] / sound / isa / cs423x / cs4231_lib.c
1 /*
2  *  Copyright (c) by Jaroslav Kysela <perex@suse.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 <sound/driver.h>
28 #include <linux/delay.h>
29 #include <linux/pm.h>
30 #include <linux/init.h>
31 #include <linux/interrupt.h>
32 #include <linux/slab.h>
33 #include <linux/ioport.h>
34 #include <sound/core.h>
35 #include <sound/cs4231.h>
36 #include <sound/pcm_params.h>
37
38 #include <asm/io.h>
39 #include <asm/dma.h>
40 #include <asm/irq.h>
41
42 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.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_cs4231_xrate(struct snd_pcm_runtime *runtime)
83 {
84         return snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
85 }
86
87 static unsigned char snd_cs4231_original_image[32] =
88 {
89         0x00,                   /* 00/00 - lic */
90         0x00,                   /* 01/01 - ric */
91         0x9f,                   /* 02/02 - la1ic */
92         0x9f,                   /* 03/03 - ra1ic */
93         0x9f,                   /* 04/04 - la2ic */
94         0x9f,                   /* 05/05 - ra2ic */
95         0xbf,                   /* 06/06 - loc */
96         0xbf,                   /* 07/07 - roc */
97         0x20,                   /* 08/08 - pdfr */
98         CS4231_AUTOCALIB,       /* 09/09 - ic */
99         0x00,                   /* 0a/10 - pc */
100         0x00,                   /* 0b/11 - ti */
101         CS4231_MODE2,           /* 0c/12 - mi */
102         0xfc,                   /* 0d/13 - lbc */
103         0x00,                   /* 0e/14 - pbru */
104         0x00,                   /* 0f/15 - pbrl */
105         0x80,                   /* 10/16 - afei */
106         0x01,                   /* 11/17 - afeii */
107         0x9f,                   /* 12/18 - llic */
108         0x9f,                   /* 13/19 - rlic */
109         0x00,                   /* 14/20 - tlb */
110         0x00,                   /* 15/21 - thb */
111         0x00,                   /* 16/22 - la3mic/reserved */
112         0x00,                   /* 17/23 - ra3mic/reserved */
113         0x00,                   /* 18/24 - afs */
114         0x00,                   /* 19/25 - lamoc/version */
115         0xcf,                   /* 1a/26 - mioc */
116         0x00,                   /* 1b/27 - ramoc/reserved */
117         0x20,                   /* 1c/28 - cdfr */
118         0x00,                   /* 1d/29 - res4 */
119         0x00,                   /* 1e/30 - cbru */
120         0x00,                   /* 1f/31 - cbrl */
121 };
122
123 /*
124  *  Basic I/O functions
125  */
126
127 static inline void cs4231_outb(struct snd_cs4231 *chip, u8 offset, u8 val)
128 {
129         outb(val, chip->port + offset);
130 }
131
132 static inline u8 cs4231_inb(struct snd_cs4231 *chip, u8 offset)
133 {
134         return inb(chip->port + offset);
135 }
136
137 static void snd_cs4231_wait(struct snd_cs4231 *chip)
138 {
139         int timeout;
140
141         for (timeout = 250;
142              timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
143              timeout--)
144                 udelay(100);
145 }
146
147 static void snd_cs4231_outm(struct snd_cs4231 *chip, unsigned char reg,
148                             unsigned char mask, unsigned char value)
149 {
150         unsigned char tmp = (chip->image[reg] & mask) | value;
151
152         snd_cs4231_wait(chip);
153 #ifdef CONFIG_SND_DEBUG
154         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
155                 snd_printk("outm: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
156 #endif
157         chip->image[reg] = tmp;
158         if (!chip->calibrate_mute) {
159                 cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
160                 wmb();
161                 cs4231_outb(chip, CS4231P(REG), tmp);
162                 mb();
163         }
164 }
165
166 static void snd_cs4231_dout(struct snd_cs4231 *chip, unsigned char reg, unsigned char value)
167 {
168         int timeout;
169
170         for (timeout = 250;
171              timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
172              timeout--)
173                 udelay(10);
174         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
175         cs4231_outb(chip, CS4231P(REG), value);
176         mb();
177 }
178
179 void snd_cs4231_out(struct snd_cs4231 *chip, unsigned char reg, unsigned char value)
180 {
181         snd_cs4231_wait(chip);
182 #ifdef CONFIG_SND_DEBUG
183         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
184                 snd_printk("out: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
185 #endif
186         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
187         cs4231_outb(chip, CS4231P(REG), value);
188         chip->image[reg] = value;
189         mb();
190         snd_printdd("codec out - reg 0x%x = 0x%x\n",
191                         chip->mce_bit | reg, value);
192 }
193
194 unsigned char snd_cs4231_in(struct snd_cs4231 *chip, unsigned char reg)
195 {
196         snd_cs4231_wait(chip);
197 #ifdef CONFIG_SND_DEBUG
198         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
199                 snd_printk("in: auto calibration time out - reg = 0x%x\n", reg);
200 #endif
201         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
202         mb();
203         return cs4231_inb(chip, CS4231P(REG));
204 }
205
206 void snd_cs4236_ext_out(struct snd_cs4231 *chip, unsigned char reg, unsigned char val)
207 {
208         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | 0x17);
209         cs4231_outb(chip, CS4231P(REG), reg | (chip->image[CS4236_EXT_REG] & 0x01));
210         cs4231_outb(chip, CS4231P(REG), val);
211         chip->eimage[CS4236_REG(reg)] = val;
212 #if 0
213         printk("ext out : reg = 0x%x, val = 0x%x\n", reg, val);
214 #endif
215 }
216
217 unsigned char snd_cs4236_ext_in(struct snd_cs4231 *chip, unsigned char reg)
218 {
219         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | 0x17);
220         cs4231_outb(chip, CS4231P(REG), reg | (chip->image[CS4236_EXT_REG] & 0x01));
221 #if 1
222         return cs4231_inb(chip, CS4231P(REG));
223 #else
224         {
225                 unsigned char res;
226                 res = cs4231_inb(chip, CS4231P(REG));
227                 printk("ext in : reg = 0x%x, val = 0x%x\n", reg, res);
228                 return res;
229         }
230 #endif
231 }
232
233 #if 0
234
235 static void snd_cs4231_debug(struct snd_cs4231 *chip)
236 {
237         printk("CS4231 REGS:      INDEX = 0x%02x  ", cs4231_inb(chip, CS4231P(REGSEL)));
238         printk("                 STATUS = 0x%02x\n", cs4231_inb(chip, CS4231P(STATUS)));
239         printk("  0x00: left input      = 0x%02x  ", snd_cs4231_in(chip, 0x00));
240         printk("  0x10: alt 1 (CFIG 2)  = 0x%02x\n", snd_cs4231_in(chip, 0x10));
241         printk("  0x01: right input     = 0x%02x  ", snd_cs4231_in(chip, 0x01));
242         printk("  0x11: alt 2 (CFIG 3)  = 0x%02x\n", snd_cs4231_in(chip, 0x11));
243         printk("  0x02: GF1 left input  = 0x%02x  ", snd_cs4231_in(chip, 0x02));
244         printk("  0x12: left line in    = 0x%02x\n", snd_cs4231_in(chip, 0x12));
245         printk("  0x03: GF1 right input = 0x%02x  ", snd_cs4231_in(chip, 0x03));
246         printk("  0x13: right line in   = 0x%02x\n", snd_cs4231_in(chip, 0x13));
247         printk("  0x04: CD left input   = 0x%02x  ", snd_cs4231_in(chip, 0x04));
248         printk("  0x14: timer low       = 0x%02x\n", snd_cs4231_in(chip, 0x14));
249         printk("  0x05: CD right input  = 0x%02x  ", snd_cs4231_in(chip, 0x05));
250         printk("  0x15: timer high      = 0x%02x\n", snd_cs4231_in(chip, 0x15));
251         printk("  0x06: left output     = 0x%02x  ", snd_cs4231_in(chip, 0x06));
252         printk("  0x16: left MIC (PnP)  = 0x%02x\n", snd_cs4231_in(chip, 0x16));
253         printk("  0x07: right output    = 0x%02x  ", snd_cs4231_in(chip, 0x07));
254         printk("  0x17: right MIC (PnP) = 0x%02x\n", snd_cs4231_in(chip, 0x17));
255         printk("  0x08: playback format = 0x%02x  ", snd_cs4231_in(chip, 0x08));
256         printk("  0x18: IRQ status      = 0x%02x\n", snd_cs4231_in(chip, 0x18));
257         printk("  0x09: iface (CFIG 1)  = 0x%02x  ", snd_cs4231_in(chip, 0x09));
258         printk("  0x19: left line out   = 0x%02x\n", snd_cs4231_in(chip, 0x19));
259         printk("  0x0a: pin control     = 0x%02x  ", snd_cs4231_in(chip, 0x0a));
260         printk("  0x1a: mono control    = 0x%02x\n", snd_cs4231_in(chip, 0x1a));
261         printk("  0x0b: init & status   = 0x%02x  ", snd_cs4231_in(chip, 0x0b));
262         printk("  0x1b: right line out  = 0x%02x\n", snd_cs4231_in(chip, 0x1b));
263         printk("  0x0c: revision & mode = 0x%02x  ", snd_cs4231_in(chip, 0x0c));
264         printk("  0x1c: record format   = 0x%02x\n", snd_cs4231_in(chip, 0x1c));
265         printk("  0x0d: loopback        = 0x%02x  ", snd_cs4231_in(chip, 0x0d));
266         printk("  0x1d: var freq (PnP)  = 0x%02x\n", snd_cs4231_in(chip, 0x1d));
267         printk("  0x0e: ply upr count   = 0x%02x  ", snd_cs4231_in(chip, 0x0e));
268         printk("  0x1e: ply lwr count   = 0x%02x\n", snd_cs4231_in(chip, 0x1e));
269         printk("  0x0f: rec upr count   = 0x%02x  ", snd_cs4231_in(chip, 0x0f));
270         printk("  0x1f: rec lwr count   = 0x%02x\n", snd_cs4231_in(chip, 0x1f));
271 }
272
273 #endif
274
275 /*
276  *  CS4231 detection / MCE routines
277  */
278
279 static void snd_cs4231_busy_wait(struct snd_cs4231 *chip)
280 {
281         int timeout;
282
283         /* huh.. looks like this sequence is proper for CS4231A chip (GUS MAX) */
284         for (timeout = 5; timeout > 0; timeout--)
285                 cs4231_inb(chip, CS4231P(REGSEL));
286         /* end of cleanup sequence */
287         for (timeout = 250;
288              timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
289              timeout--)
290                 udelay(10);
291 }
292
293 void snd_cs4231_mce_up(struct snd_cs4231 *chip)
294 {
295         unsigned long flags;
296         int timeout;
297
298         snd_cs4231_wait(chip);
299 #ifdef CONFIG_SND_DEBUG
300         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
301                 snd_printk("mce_up - auto calibration time out (0)\n");
302 #endif
303         spin_lock_irqsave(&chip->reg_lock, flags);
304         chip->mce_bit |= CS4231_MCE;
305         timeout = cs4231_inb(chip, CS4231P(REGSEL));
306         if (timeout == 0x80)
307                 snd_printk("mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
308         if (!(timeout & CS4231_MCE))
309                 cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
310         spin_unlock_irqrestore(&chip->reg_lock, flags);
311 }
312
313 void snd_cs4231_mce_down(struct snd_cs4231 *chip)
314 {
315         unsigned long flags;
316         int timeout;
317
318         snd_cs4231_busy_wait(chip);
319
320 #ifdef CONFIG_SND_DEBUG
321         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
322                 snd_printk("mce_down [0x%lx] - auto calibration time out (0)\n", (long)CS4231P(REGSEL));
323 #endif
324         spin_lock_irqsave(&chip->reg_lock, flags);
325         chip->mce_bit &= ~CS4231_MCE;
326         timeout = cs4231_inb(chip, CS4231P(REGSEL));
327         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
328         spin_unlock_irqrestore(&chip->reg_lock, flags);
329         if (timeout == 0x80)
330                 snd_printk("mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
331         if ((timeout & CS4231_MCE) == 0 ||
332             !(chip->hardware & (CS4231_HW_CS4231_MASK | CS4231_HW_CS4232_MASK))) {
333                 return;
334         }
335         snd_cs4231_busy_wait(chip);
336
337         /*
338          * Wait for (possible -- during init auto-calibration may not be set)
339          * calibration process to start. Needs upto 5 sample periods on AD1848
340          * which at the slowest possible rate of 5.5125 kHz means 907 us.
341          */
342         msleep(1);
343
344         snd_printdd("(1) jiffies = %lu\n", jiffies);
345
346         /* check condition up to 250 ms */
347         timeout = msecs_to_jiffies(250);
348         while (snd_cs4231_in(chip, CS4231_TEST_INIT) &
349                 CS4231_CALIB_IN_PROGRESS) {
350
351                 if (timeout <= 0) {
352                         snd_printk(KERN_ERR "mce_down - "
353                                         "auto calibration time out (2)\n");
354                         return;
355                 }
356                 timeout = schedule_timeout(timeout);
357         }
358
359         snd_printdd("(2) jiffies = %lu\n", jiffies);
360
361         /* check condition up to 100 ms */
362         timeout = msecs_to_jiffies(100);
363         while (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT) {
364                 if (timeout <= 0) {
365                         snd_printk(KERN_ERR "mce_down - auto calibration time out (3)\n");
366                         return;
367                 }
368                 timeout = schedule_timeout(timeout);
369         }
370
371         snd_printdd("(3) jiffies = %lu\n", jiffies);
372         snd_printd("mce_down - exit = 0x%x\n", cs4231_inb(chip, CS4231P(REGSEL)));
373 }
374
375 static unsigned int snd_cs4231_get_count(unsigned char format, unsigned int size)
376 {
377         switch (format & 0xe0) {
378         case CS4231_LINEAR_16:
379         case CS4231_LINEAR_16_BIG:
380                 size >>= 1;
381                 break;
382         case CS4231_ADPCM_16:
383                 return size >> 2;
384         }
385         if (format & CS4231_STEREO)
386                 size >>= 1;
387         return size;
388 }
389
390 static int snd_cs4231_trigger(struct snd_pcm_substream *substream,
391                               int cmd)
392 {
393         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
394         int result = 0;
395         unsigned int what;
396         struct snd_pcm_substream *s;
397         int do_start;
398
399 #if 0
400         printk("codec trigger!!! - what = %i, enable = %i, status = 0x%x\n", what, enable, cs4231_inb(chip, CS4231P(STATUS)));
401 #endif
402
403         switch (cmd) {
404         case SNDRV_PCM_TRIGGER_START:
405         case SNDRV_PCM_TRIGGER_RESUME:
406                 do_start = 1; break;
407         case SNDRV_PCM_TRIGGER_STOP:
408         case SNDRV_PCM_TRIGGER_SUSPEND:
409                 do_start = 0; break;
410         default:
411                 return -EINVAL;
412         }
413
414         what = 0;
415         snd_pcm_group_for_each_entry(s, substream) {
416                 if (s == chip->playback_substream) {
417                         what |= CS4231_PLAYBACK_ENABLE;
418                         snd_pcm_trigger_done(s, substream);
419                 } else if (s == chip->capture_substream) {
420                         what |= CS4231_RECORD_ENABLE;
421                         snd_pcm_trigger_done(s, substream);
422                 }
423         }
424         spin_lock(&chip->reg_lock);
425         if (do_start) {
426                 chip->image[CS4231_IFACE_CTRL] |= what;
427                 if (chip->trigger)
428                         chip->trigger(chip, what, 1);
429         } else {
430                 chip->image[CS4231_IFACE_CTRL] &= ~what;
431                 if (chip->trigger)
432                         chip->trigger(chip, what, 0);
433         }
434         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
435         spin_unlock(&chip->reg_lock);
436 #if 0
437         snd_cs4231_debug(chip);
438 #endif
439         return result;
440 }
441
442 /*
443  *  CODEC I/O
444  */
445
446 static unsigned char snd_cs4231_get_rate(unsigned int rate)
447 {
448         int i;
449
450         for (i = 0; i < ARRAY_SIZE(rates); i++)
451                 if (rate == rates[i])
452                         return freq_bits[i];
453         // snd_BUG();
454         return freq_bits[ARRAY_SIZE(rates) - 1];
455 }
456
457 static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip,
458                                            int format,
459                                            int channels)
460 {
461         unsigned char rformat;
462
463         rformat = CS4231_LINEAR_8;
464         switch (format) {
465         case SNDRV_PCM_FORMAT_MU_LAW:   rformat = CS4231_ULAW_8; break;
466         case SNDRV_PCM_FORMAT_A_LAW:    rformat = CS4231_ALAW_8; break;
467         case SNDRV_PCM_FORMAT_S16_LE:   rformat = CS4231_LINEAR_16; break;
468         case SNDRV_PCM_FORMAT_S16_BE:   rformat = CS4231_LINEAR_16_BIG; break;
469         case SNDRV_PCM_FORMAT_IMA_ADPCM:        rformat = CS4231_ADPCM_16; break;
470         }
471         if (channels > 1)
472                 rformat |= CS4231_STEREO;
473 #if 0
474         snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
475 #endif
476         return rformat;
477 }
478
479 static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
480 {
481         unsigned long flags;
482
483         mute = mute ? 1 : 0;
484         spin_lock_irqsave(&chip->reg_lock, flags);
485         if (chip->calibrate_mute == mute) {
486                 spin_unlock_irqrestore(&chip->reg_lock, flags);
487                 return;
488         }
489         if (!mute) {
490                 snd_cs4231_dout(chip, CS4231_LEFT_INPUT, chip->image[CS4231_LEFT_INPUT]);
491                 snd_cs4231_dout(chip, CS4231_RIGHT_INPUT, chip->image[CS4231_RIGHT_INPUT]);
492                 snd_cs4231_dout(chip, CS4231_LOOPBACK, chip->image[CS4231_LOOPBACK]);
493         }
494         snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
495         snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
496         snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
497         snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
498         snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT, mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
499         snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT, mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
500         snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN, mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
501         snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN, mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
502         snd_cs4231_dout(chip, CS4231_MONO_CTRL, mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
503         if (chip->hardware == CS4231_HW_INTERWAVE) {
504                 snd_cs4231_dout(chip, CS4231_LEFT_MIC_INPUT, mute ? 0x80 : chip->image[CS4231_LEFT_MIC_INPUT]);
505                 snd_cs4231_dout(chip, CS4231_RIGHT_MIC_INPUT, mute ? 0x80 : chip->image[CS4231_RIGHT_MIC_INPUT]);               
506                 snd_cs4231_dout(chip, CS4231_LINE_LEFT_OUTPUT, mute ? 0x80 : chip->image[CS4231_LINE_LEFT_OUTPUT]);
507                 snd_cs4231_dout(chip, CS4231_LINE_RIGHT_OUTPUT, mute ? 0x80 : chip->image[CS4231_LINE_RIGHT_OUTPUT]);
508         }
509         chip->calibrate_mute = mute;
510         spin_unlock_irqrestore(&chip->reg_lock, flags);
511 }
512
513 static void snd_cs4231_playback_format(struct snd_cs4231 *chip,
514                                        struct snd_pcm_hw_params *params,
515                                        unsigned char pdfr)
516 {
517         unsigned long flags;
518         int full_calib = 1;
519
520         mutex_lock(&chip->mce_mutex);
521         snd_cs4231_calibrate_mute(chip, 1);
522         if (chip->hardware == CS4231_HW_CS4231A ||
523             (chip->hardware & CS4231_HW_CS4232_MASK)) {
524                 spin_lock_irqsave(&chip->reg_lock, flags);
525                 if ((chip->image[CS4231_PLAYBK_FORMAT] & 0x0f) == (pdfr & 0x0f)) {      /* rate is same? */
526                         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | 0x10);
527                         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT] = pdfr);
528                         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~0x10);
529                         udelay(100); /* Fixes audible clicks at least on GUS MAX */
530                         full_calib = 0;
531                 }
532                 spin_unlock_irqrestore(&chip->reg_lock, flags);
533         }
534         if (full_calib) {
535                 snd_cs4231_mce_up(chip);
536                 spin_lock_irqsave(&chip->reg_lock, flags);
537                 if (chip->hardware != CS4231_HW_INTERWAVE && !chip->single_dma) {
538                         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
539                                         (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
540                                         (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
541                                         pdfr);
542                 } else {
543                         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT] = pdfr);
544                 }
545                 spin_unlock_irqrestore(&chip->reg_lock, flags);
546                 if (chip->hardware == CS4231_HW_OPL3SA2)
547                         udelay(100);    /* this seems to help */
548                 snd_cs4231_mce_down(chip);
549         }
550         snd_cs4231_calibrate_mute(chip, 0);
551         mutex_unlock(&chip->mce_mutex);
552 }
553
554 static void snd_cs4231_capture_format(struct snd_cs4231 *chip,
555                                       struct snd_pcm_hw_params *params,
556                                       unsigned char cdfr)
557 {
558         unsigned long flags;
559         int full_calib = 1;
560
561         mutex_lock(&chip->mce_mutex);
562         snd_cs4231_calibrate_mute(chip, 1);
563         if (chip->hardware == CS4231_HW_CS4231A ||
564             (chip->hardware & CS4231_HW_CS4232_MASK)) {
565                 spin_lock_irqsave(&chip->reg_lock, flags);
566                 if ((chip->image[CS4231_PLAYBK_FORMAT] & 0x0f) == (cdfr & 0x0f) ||      /* rate is same? */
567                     (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
568                         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | 0x20);
569                         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT] = cdfr);
570                         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~0x20);
571                         full_calib = 0;
572                 }
573                 spin_unlock_irqrestore(&chip->reg_lock, flags);
574         }
575         if (full_calib) {
576                 snd_cs4231_mce_up(chip);
577                 spin_lock_irqsave(&chip->reg_lock, flags);
578                 if (chip->hardware != CS4231_HW_INTERWAVE) {
579                         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
580                                 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
581                                                ((chip->single_dma ? cdfr : chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
582                                                (cdfr & 0x0f));
583                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
584                                 snd_cs4231_mce_down(chip);
585                                 snd_cs4231_mce_up(chip);
586                                 spin_lock_irqsave(&chip->reg_lock, flags);
587                         }
588                 }
589                 snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
590                 spin_unlock_irqrestore(&chip->reg_lock, flags);
591                 snd_cs4231_mce_down(chip);
592         }
593         snd_cs4231_calibrate_mute(chip, 0);
594         mutex_unlock(&chip->mce_mutex);
595 }
596
597 /*
598  *  Timer interface
599  */
600
601 static unsigned long snd_cs4231_timer_resolution(struct snd_timer * timer)
602 {
603         struct snd_cs4231 *chip = snd_timer_chip(timer);
604         if (chip->hardware & CS4231_HW_CS4236B_MASK)
605                 return 14467;
606         else
607                 return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
608 }
609
610 static int snd_cs4231_timer_start(struct snd_timer * timer)
611 {
612         unsigned long flags;
613         unsigned int ticks;
614         struct snd_cs4231 *chip = snd_timer_chip(timer);
615         spin_lock_irqsave(&chip->reg_lock, flags);
616         ticks = timer->sticks;
617         if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
618             (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
619             (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
620                 snd_cs4231_out(chip, CS4231_TIMER_HIGH, chip->image[CS4231_TIMER_HIGH] = (unsigned char) (ticks >> 8));
621                 snd_cs4231_out(chip, CS4231_TIMER_LOW, chip->image[CS4231_TIMER_LOW] = (unsigned char) ticks);
622                 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | CS4231_TIMER_ENABLE);
623         }
624         spin_unlock_irqrestore(&chip->reg_lock, flags);
625         return 0;
626 }
627
628 static int snd_cs4231_timer_stop(struct snd_timer * timer)
629 {
630         unsigned long flags;
631         struct snd_cs4231 *chip = snd_timer_chip(timer);
632         spin_lock_irqsave(&chip->reg_lock, flags);
633         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE);
634         spin_unlock_irqrestore(&chip->reg_lock, flags);
635         return 0;
636 }
637
638 static void snd_cs4231_init(struct snd_cs4231 *chip)
639 {
640         unsigned long flags;
641
642         snd_cs4231_mce_down(chip);
643
644 #ifdef SNDRV_DEBUG_MCE
645         snd_printk("init: (1)\n");
646 #endif
647         snd_cs4231_mce_up(chip);
648         spin_lock_irqsave(&chip->reg_lock, flags);
649         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
650                              CS4231_RECORD_ENABLE | CS4231_RECORD_PIO |
651                              CS4231_CALIB_MODE);
652         chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
653         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
654         spin_unlock_irqrestore(&chip->reg_lock, flags);
655         snd_cs4231_mce_down(chip);
656
657 #ifdef SNDRV_DEBUG_MCE
658         snd_printk("init: (2)\n");
659 #endif
660
661         snd_cs4231_mce_up(chip);
662         spin_lock_irqsave(&chip->reg_lock, flags);
663         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1]);
664         spin_unlock_irqrestore(&chip->reg_lock, flags);
665         snd_cs4231_mce_down(chip);
666
667 #ifdef SNDRV_DEBUG_MCE
668         snd_printk("init: (3) - afei = 0x%x\n", chip->image[CS4231_ALT_FEATURE_1]);
669 #endif
670
671         spin_lock_irqsave(&chip->reg_lock, flags);
672         snd_cs4231_out(chip, CS4231_ALT_FEATURE_2, chip->image[CS4231_ALT_FEATURE_2]);
673         spin_unlock_irqrestore(&chip->reg_lock, flags);
674
675         snd_cs4231_mce_up(chip);
676         spin_lock_irqsave(&chip->reg_lock, flags);
677         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT]);
678         spin_unlock_irqrestore(&chip->reg_lock, flags);
679         snd_cs4231_mce_down(chip);
680
681 #ifdef SNDRV_DEBUG_MCE
682         snd_printk("init: (4)\n");
683 #endif
684
685         snd_cs4231_mce_up(chip);
686         spin_lock_irqsave(&chip->reg_lock, flags);
687         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
688         spin_unlock_irqrestore(&chip->reg_lock, flags);
689         snd_cs4231_mce_down(chip);
690
691 #ifdef SNDRV_DEBUG_MCE
692         snd_printk("init: (5)\n");
693 #endif
694 }
695
696 static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
697 {
698         unsigned long flags;
699
700         mutex_lock(&chip->open_mutex);
701         if ((chip->mode & mode) ||
702             ((chip->mode & CS4231_MODE_OPEN) && chip->single_dma)) {
703                 mutex_unlock(&chip->open_mutex);
704                 return -EAGAIN;
705         }
706         if (chip->mode & CS4231_MODE_OPEN) {
707                 chip->mode |= mode;
708                 mutex_unlock(&chip->open_mutex);
709                 return 0;
710         }
711         /* ok. now enable and ack CODEC IRQ */
712         spin_lock_irqsave(&chip->reg_lock, flags);
713         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
714                        CS4231_RECORD_IRQ |
715                        CS4231_TIMER_IRQ);
716         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
717         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
718         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
719         chip->image[CS4231_PIN_CTRL] |= CS4231_IRQ_ENABLE;
720         snd_cs4231_out(chip, CS4231_PIN_CTRL, chip->image[CS4231_PIN_CTRL]);
721         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
722                        CS4231_RECORD_IRQ |
723                        CS4231_TIMER_IRQ);
724         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
725         spin_unlock_irqrestore(&chip->reg_lock, flags);
726
727         chip->mode = mode;
728         mutex_unlock(&chip->open_mutex);
729         return 0;
730 }
731
732 static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
733 {
734         unsigned long flags;
735
736         mutex_lock(&chip->open_mutex);
737         chip->mode &= ~mode;
738         if (chip->mode & CS4231_MODE_OPEN) {
739                 mutex_unlock(&chip->open_mutex);
740                 return;
741         }
742         snd_cs4231_calibrate_mute(chip, 1);
743
744         /* disable IRQ */
745         spin_lock_irqsave(&chip->reg_lock, flags);
746         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
747         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
748         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
749         chip->image[CS4231_PIN_CTRL] &= ~CS4231_IRQ_ENABLE;
750         snd_cs4231_out(chip, CS4231_PIN_CTRL, chip->image[CS4231_PIN_CTRL]);
751
752         /* now disable record & playback */
753
754         if (chip->image[CS4231_IFACE_CTRL] & (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
755                                                CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
756                 spin_unlock_irqrestore(&chip->reg_lock, flags);
757                 snd_cs4231_mce_up(chip);
758                 spin_lock_irqsave(&chip->reg_lock, flags);
759                 chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
760                                                      CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
761                 snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
762                 spin_unlock_irqrestore(&chip->reg_lock, flags);
763                 snd_cs4231_mce_down(chip);
764                 spin_lock_irqsave(&chip->reg_lock, flags);
765         }
766
767         /* clear IRQ again */
768         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
769         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
770         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
771         spin_unlock_irqrestore(&chip->reg_lock, flags);
772
773         snd_cs4231_calibrate_mute(chip, 0);
774
775         chip->mode = 0;
776         mutex_unlock(&chip->open_mutex);
777 }
778
779 /*
780  *  timer open/close
781  */
782
783 static int snd_cs4231_timer_open(struct snd_timer * timer)
784 {
785         struct snd_cs4231 *chip = snd_timer_chip(timer);
786         snd_cs4231_open(chip, CS4231_MODE_TIMER);
787         return 0;
788 }
789
790 static int snd_cs4231_timer_close(struct snd_timer * timer)
791 {
792         struct snd_cs4231 *chip = snd_timer_chip(timer);
793         snd_cs4231_close(chip, CS4231_MODE_TIMER);
794         return 0;
795 }
796
797 static struct snd_timer_hardware snd_cs4231_timer_table =
798 {
799         .flags =        SNDRV_TIMER_HW_AUTO,
800         .resolution =   9945,
801         .ticks =        65535,
802         .open =         snd_cs4231_timer_open,
803         .close =        snd_cs4231_timer_close,
804         .c_resolution = snd_cs4231_timer_resolution,
805         .start =        snd_cs4231_timer_start,
806         .stop =         snd_cs4231_timer_stop,
807 };
808
809 /*
810  *  ok.. exported functions..
811  */
812
813 static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
814                                          struct snd_pcm_hw_params *hw_params)
815 {
816         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
817         unsigned char new_pdfr;
818         int err;
819
820         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
821                 return err;
822         new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params), params_channels(hw_params)) |
823                    snd_cs4231_get_rate(params_rate(hw_params));
824         chip->set_playback_format(chip, hw_params, new_pdfr);
825         return 0;
826 }
827
828 static int snd_cs4231_playback_hw_free(struct snd_pcm_substream *substream)
829 {
830         return snd_pcm_lib_free_pages(substream);
831 }
832
833 static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
834 {
835         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
836         struct snd_pcm_runtime *runtime = substream->runtime;
837         unsigned long flags;
838         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
839         unsigned int count = snd_pcm_lib_period_bytes(substream);
840
841         spin_lock_irqsave(&chip->reg_lock, flags);
842         chip->p_dma_size = size;
843         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO);
844         snd_dma_program(chip->dma1, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
845         count = snd_cs4231_get_count(chip->image[CS4231_PLAYBK_FORMAT], count) - 1;
846         snd_cs4231_out(chip, CS4231_PLY_LWR_CNT, (unsigned char) count);
847         snd_cs4231_out(chip, CS4231_PLY_UPR_CNT, (unsigned char) (count >> 8));
848         spin_unlock_irqrestore(&chip->reg_lock, flags);
849 #if 0
850         snd_cs4231_debug(chip);
851 #endif
852         return 0;
853 }
854
855 static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
856                                         struct snd_pcm_hw_params *hw_params)
857 {
858         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
859         unsigned char new_cdfr;
860         int err;
861
862         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
863                 return err;
864         new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params), params_channels(hw_params)) |
865                    snd_cs4231_get_rate(params_rate(hw_params));
866         chip->set_capture_format(chip, hw_params, new_cdfr);
867         return 0;
868 }
869
870 static int snd_cs4231_capture_hw_free(struct snd_pcm_substream *substream)
871 {
872         return snd_pcm_lib_free_pages(substream);
873 }
874
875 static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
876 {
877         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
878         struct snd_pcm_runtime *runtime = substream->runtime;
879         unsigned long flags;
880         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
881         unsigned int count = snd_pcm_lib_period_bytes(substream);
882
883         spin_lock_irqsave(&chip->reg_lock, flags);
884         chip->c_dma_size = size;
885         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
886         snd_dma_program(chip->dma2, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
887         count = snd_cs4231_get_count(chip->image[CS4231_REC_FORMAT], count) - 1;
888         if (chip->single_dma && chip->hardware != CS4231_HW_INTERWAVE) {
889                 snd_cs4231_out(chip, CS4231_PLY_LWR_CNT, (unsigned char) count);
890                 snd_cs4231_out(chip, CS4231_PLY_UPR_CNT, (unsigned char) (count >> 8));
891         } else {
892                 snd_cs4231_out(chip, CS4231_REC_LWR_CNT, (unsigned char) count);
893                 snd_cs4231_out(chip, CS4231_REC_UPR_CNT, (unsigned char) (count >> 8));
894         }
895         spin_unlock_irqrestore(&chip->reg_lock, flags);
896         return 0;
897 }
898
899 static void snd_cs4231_overrange(struct snd_cs4231 *chip)
900 {
901         unsigned long flags;
902         unsigned char res;
903
904         spin_lock_irqsave(&chip->reg_lock, flags);
905         res = snd_cs4231_in(chip, CS4231_TEST_INIT);
906         spin_unlock_irqrestore(&chip->reg_lock, flags);
907         if (res & (0x08 | 0x02))        /* detect overrange only above 0dB; may be user selectable? */
908                 chip->capture_substream->runtime->overrange++;
909 }
910
911 irqreturn_t snd_cs4231_interrupt(int irq, void *dev_id)
912 {
913         struct snd_cs4231 *chip = dev_id;
914         unsigned char status;
915
916         status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
917         if (status & CS4231_TIMER_IRQ) {
918                 if (chip->timer)
919                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
920         }               
921         if (chip->single_dma && chip->hardware != CS4231_HW_INTERWAVE) {
922                 if (status & CS4231_PLAYBACK_IRQ) {
923                         if (chip->mode & CS4231_MODE_PLAY) {
924                                 if (chip->playback_substream)
925                                         snd_pcm_period_elapsed(chip->playback_substream);
926                         }
927                         if (chip->mode & CS4231_MODE_RECORD) {
928                                 if (chip->capture_substream) {
929                                         snd_cs4231_overrange(chip);
930                                         snd_pcm_period_elapsed(chip->capture_substream);
931                                 }
932                         }
933                 }
934         } else {
935                 if (status & CS4231_PLAYBACK_IRQ) {
936                         if (chip->playback_substream)
937                                 snd_pcm_period_elapsed(chip->playback_substream);
938                 }
939                 if (status & CS4231_RECORD_IRQ) {
940                         if (chip->capture_substream) {
941                                 snd_cs4231_overrange(chip);
942                                 snd_pcm_period_elapsed(chip->capture_substream);
943                         }
944                 }
945         }
946
947         spin_lock(&chip->reg_lock);
948         snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
949         spin_unlock(&chip->reg_lock);
950         return IRQ_HANDLED;
951 }
952
953 static snd_pcm_uframes_t snd_cs4231_playback_pointer(struct snd_pcm_substream *substream)
954 {
955         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
956         size_t ptr;
957
958         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
959                 return 0;
960         ptr = snd_dma_pointer(chip->dma1, chip->p_dma_size);
961         return bytes_to_frames(substream->runtime, ptr);
962 }
963
964 static snd_pcm_uframes_t snd_cs4231_capture_pointer(struct snd_pcm_substream *substream)
965 {
966         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
967         size_t ptr;
968         
969         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
970                 return 0;
971         ptr = snd_dma_pointer(chip->dma2, chip->c_dma_size);
972         return bytes_to_frames(substream->runtime, ptr);
973 }
974
975 /*
976
977  */
978
979 static int snd_cs4231_probe(struct snd_cs4231 *chip)
980 {
981         unsigned long flags;
982         int i, id, rev;
983         unsigned char *ptr;
984         unsigned int hw;
985
986 #if 0
987         snd_cs4231_debug(chip);
988 #endif
989         id = 0;
990         for (i = 0; i < 50; i++) {
991                 mb();
992                 if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
993                         udelay(2000);
994                 else {
995                         spin_lock_irqsave(&chip->reg_lock, flags);
996                         snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
997                         id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
998                         spin_unlock_irqrestore(&chip->reg_lock, flags);
999                         if (id == 0x0a)
1000                                 break;  /* this is valid value */
1001                 }
1002         }
1003         snd_printdd("cs4231: port = 0x%lx, id = 0x%x\n", chip->port, id);
1004         if (id != 0x0a)
1005                 return -ENODEV; /* no valid device found */
1006
1007         if (((hw = chip->hardware) & CS4231_HW_TYPE_MASK) == CS4231_HW_DETECT) {
1008                 rev = snd_cs4231_in(chip, CS4231_VERSION) & 0xe7;
1009                 snd_printdd("CS4231: VERSION (I25) = 0x%x\n", rev);
1010                 if (rev == 0x80) {
1011                         unsigned char tmp = snd_cs4231_in(chip, 23);
1012                         snd_cs4231_out(chip, 23, ~tmp);
1013                         if (snd_cs4231_in(chip, 23) != tmp)
1014                                 chip->hardware = CS4231_HW_AD1845;
1015                         else
1016                                 chip->hardware = CS4231_HW_CS4231;
1017                 } else if (rev == 0xa0) {
1018                         chip->hardware = CS4231_HW_CS4231A;
1019                 } else if (rev == 0xa2) {
1020                         chip->hardware = CS4231_HW_CS4232;
1021                 } else if (rev == 0xb2) {
1022                         chip->hardware = CS4231_HW_CS4232A;
1023                 } else if (rev == 0x83) {
1024                         chip->hardware = CS4231_HW_CS4236;
1025                 } else if (rev == 0x03) {
1026                         chip->hardware = CS4231_HW_CS4236B;
1027                 } else {
1028                         snd_printk("unknown CS chip with version 0x%x\n", rev);
1029                         return -ENODEV;         /* unknown CS4231 chip? */
1030                 }
1031         }
1032         spin_lock_irqsave(&chip->reg_lock, flags);
1033         cs4231_inb(chip, CS4231P(STATUS));      /* clear any pendings IRQ */
1034         cs4231_outb(chip, CS4231P(STATUS), 0);
1035         mb();
1036         spin_unlock_irqrestore(&chip->reg_lock, flags);
1037
1038         chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1039         switch (chip->hardware) {
1040         case CS4231_HW_INTERWAVE:
1041                 chip->image[CS4231_MISC_INFO] = CS4231_IW_MODE3;
1042                 break;
1043         case CS4231_HW_CS4235:
1044         case CS4231_HW_CS4236B:
1045         case CS4231_HW_CS4237B:
1046         case CS4231_HW_CS4238B:
1047         case CS4231_HW_CS4239:
1048                 if (hw == CS4231_HW_DETECT3)
1049                         chip->image[CS4231_MISC_INFO] = CS4231_4236_MODE3;
1050                 else
1051                         chip->hardware = CS4231_HW_CS4236;
1052                 break;
1053         }
1054
1055         chip->image[CS4231_IFACE_CTRL] =
1056             (chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA) |
1057             (chip->single_dma ? CS4231_SINGLE_DMA : 0);
1058         chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1059         chip->image[CS4231_ALT_FEATURE_2] = chip->hardware == CS4231_HW_INTERWAVE ? 0xc2 : 0x01;
1060         ptr = (unsigned char *) &chip->image;
1061         snd_cs4231_mce_down(chip);
1062         spin_lock_irqsave(&chip->reg_lock, flags);
1063         for (i = 0; i < 32; i++)        /* ok.. fill all CS4231 registers */
1064                 snd_cs4231_out(chip, i, *ptr++);
1065         spin_unlock_irqrestore(&chip->reg_lock, flags);
1066         snd_cs4231_mce_up(chip);
1067         snd_cs4231_mce_down(chip);
1068
1069         mdelay(2);
1070
1071         /* ok.. try check hardware version for CS4236+ chips */
1072         if ((hw & CS4231_HW_TYPE_MASK) == CS4231_HW_DETECT) {
1073                 if (chip->hardware == CS4231_HW_CS4236B) {
1074                         rev = snd_cs4236_ext_in(chip, CS4236_VERSION);
1075                         snd_cs4236_ext_out(chip, CS4236_VERSION, 0xff);
1076                         id = snd_cs4236_ext_in(chip, CS4236_VERSION);
1077                         snd_cs4236_ext_out(chip, CS4236_VERSION, rev);
1078                         snd_printdd("CS4231: ext version; rev = 0x%x, id = 0x%x\n", rev, id);
1079                         if ((id & 0x1f) == 0x1d) {      /* CS4235 */
1080                                 chip->hardware = CS4231_HW_CS4235;
1081                                 switch (id >> 5) {
1082                                 case 4:
1083                                 case 5:
1084                                 case 6:
1085                                         break;
1086                                 default:
1087                                         snd_printk("unknown CS4235 chip (enhanced version = 0x%x)\n", id);
1088                                 }
1089                         } else if ((id & 0x1f) == 0x0b) {       /* CS4236/B */
1090                                 switch (id >> 5) {
1091                                 case 4:
1092                                 case 5:
1093                                 case 6:
1094                                 case 7:
1095                                         chip->hardware = CS4231_HW_CS4236B;
1096                                         break;
1097                                 default:
1098                                         snd_printk("unknown CS4236 chip (enhanced version = 0x%x)\n", id);
1099                                 }
1100                         } else if ((id & 0x1f) == 0x08) {       /* CS4237B */
1101                                 chip->hardware = CS4231_HW_CS4237B;
1102                                 switch (id >> 5) {
1103                                 case 4:
1104                                 case 5:
1105                                 case 6:
1106                                 case 7:
1107                                         break;
1108                                 default:
1109                                         snd_printk("unknown CS4237B chip (enhanced version = 0x%x)\n", id);
1110                                 }
1111                         } else if ((id & 0x1f) == 0x09) {       /* CS4238B */
1112                                 chip->hardware = CS4231_HW_CS4238B;
1113                                 switch (id >> 5) {
1114                                 case 5:
1115                                 case 6:
1116                                 case 7:
1117                                         break;
1118                                 default:
1119                                         snd_printk("unknown CS4238B chip (enhanced version = 0x%x)\n", id);
1120                                 }
1121                         } else if ((id & 0x1f) == 0x1e) {       /* CS4239 */
1122                                 chip->hardware = CS4231_HW_CS4239;
1123                                 switch (id >> 5) {
1124                                 case 4:
1125                                 case 5:
1126                                 case 6:
1127                                         break;
1128                                 default:
1129                                         snd_printk("unknown CS4239 chip (enhanced version = 0x%x)\n", id);
1130                                 }
1131                         } else {
1132                                 snd_printk("unknown CS4236/CS423xB chip (enhanced version = 0x%x)\n", id);
1133                         }
1134                 }
1135         }
1136         return 0;               /* all things are ok.. */
1137 }
1138
1139 /*
1140
1141  */
1142
1143 static struct snd_pcm_hardware snd_cs4231_playback =
1144 {
1145         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1146                                  SNDRV_PCM_INFO_MMAP_VALID |
1147                                  SNDRV_PCM_INFO_RESUME |
1148                                  SNDRV_PCM_INFO_SYNC_START),
1149         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
1150                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
1151         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
1152         .rate_min =             5510,
1153         .rate_max =             48000,
1154         .channels_min =         1,
1155         .channels_max =         2,
1156         .buffer_bytes_max =     (128*1024),
1157         .period_bytes_min =     64,
1158         .period_bytes_max =     (128*1024),
1159         .periods_min =          1,
1160         .periods_max =          1024,
1161         .fifo_size =            0,
1162 };
1163
1164 static struct snd_pcm_hardware snd_cs4231_capture =
1165 {
1166         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1167                                  SNDRV_PCM_INFO_MMAP_VALID |
1168                                  SNDRV_PCM_INFO_RESUME |
1169                                  SNDRV_PCM_INFO_SYNC_START),
1170         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
1171                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
1172         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
1173         .rate_min =             5510,
1174         .rate_max =             48000,
1175         .channels_min =         1,
1176         .channels_max =         2,
1177         .buffer_bytes_max =     (128*1024),
1178         .period_bytes_min =     64,
1179         .period_bytes_max =     (128*1024),
1180         .periods_min =          1,
1181         .periods_max =          1024,
1182         .fifo_size =            0,
1183 };
1184
1185 /*
1186
1187  */
1188
1189 static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
1190 {
1191         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1192         struct snd_pcm_runtime *runtime = substream->runtime;
1193         int err;
1194
1195         runtime->hw = snd_cs4231_playback;
1196
1197         /* hardware bug in InterWave chipset */
1198         if (chip->hardware == CS4231_HW_INTERWAVE && chip->dma1 > 3)
1199                 runtime->hw.formats &= ~SNDRV_PCM_FMTBIT_MU_LAW;
1200         
1201         /* hardware limitation of cheap chips */
1202         if (chip->hardware == CS4231_HW_CS4235 ||
1203             chip->hardware == CS4231_HW_CS4239)
1204                 runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE;
1205
1206         snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.buffer_bytes_max);
1207         snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.period_bytes_max);
1208
1209         if (chip->claim_dma) {
1210                 if ((err = chip->claim_dma(chip, chip->dma_private_data, chip->dma1)) < 0)
1211                         return err;
1212         }
1213
1214         if ((err = snd_cs4231_open(chip, CS4231_MODE_PLAY)) < 0) {
1215                 if (chip->release_dma)
1216                         chip->release_dma(chip, chip->dma_private_data, chip->dma1);
1217                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1218                 return err;
1219         }
1220         chip->playback_substream = substream;
1221         snd_pcm_set_sync(substream);
1222         chip->rate_constraint(runtime);
1223         return 0;
1224 }
1225
1226 static int snd_cs4231_capture_open(struct snd_pcm_substream *substream)
1227 {
1228         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1229         struct snd_pcm_runtime *runtime = substream->runtime;
1230         int err;
1231
1232         runtime->hw = snd_cs4231_capture;
1233
1234         /* hardware limitation of cheap chips */
1235         if (chip->hardware == CS4231_HW_CS4235 ||
1236             chip->hardware == CS4231_HW_CS4239)
1237                 runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE;
1238
1239         snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.buffer_bytes_max);
1240         snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.period_bytes_max);
1241
1242         if (chip->claim_dma) {
1243                 if ((err = chip->claim_dma(chip, chip->dma_private_data, chip->dma2)) < 0)
1244                         return err;
1245         }
1246
1247         if ((err = snd_cs4231_open(chip, CS4231_MODE_RECORD)) < 0) {
1248                 if (chip->release_dma)
1249                         chip->release_dma(chip, chip->dma_private_data, chip->dma2);
1250                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1251                 return err;
1252         }
1253         chip->capture_substream = substream;
1254         snd_pcm_set_sync(substream);
1255         chip->rate_constraint(runtime);
1256         return 0;
1257 }
1258
1259 static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
1260 {
1261         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1262
1263         chip->playback_substream = NULL;
1264         snd_cs4231_close(chip, CS4231_MODE_PLAY);
1265         return 0;
1266 }
1267
1268 static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
1269 {
1270         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1271
1272         chip->capture_substream = NULL;
1273         snd_cs4231_close(chip, CS4231_MODE_RECORD);
1274         return 0;
1275 }
1276
1277 #ifdef CONFIG_PM
1278
1279 /* lowlevel suspend callback for CS4231 */
1280 static void snd_cs4231_suspend(struct snd_cs4231 *chip)
1281 {
1282         int reg;
1283         unsigned long flags;
1284         
1285         snd_pcm_suspend_all(chip->pcm);
1286         spin_lock_irqsave(&chip->reg_lock, flags);
1287         for (reg = 0; reg < 32; reg++)
1288                 chip->image[reg] = snd_cs4231_in(chip, reg);
1289         spin_unlock_irqrestore(&chip->reg_lock, flags);
1290 }
1291
1292 /* lowlevel resume callback for CS4231 */
1293 static void snd_cs4231_resume(struct snd_cs4231 *chip)
1294 {
1295         int reg;
1296         unsigned long flags;
1297         /* int timeout; */
1298         
1299         snd_cs4231_mce_up(chip);
1300         spin_lock_irqsave(&chip->reg_lock, flags);
1301         for (reg = 0; reg < 32; reg++) {
1302                 switch (reg) {
1303                 case CS4231_VERSION:
1304                         break;
1305                 default:
1306                         snd_cs4231_out(chip, reg, chip->image[reg]);
1307                         break;
1308                 }
1309         }
1310         spin_unlock_irqrestore(&chip->reg_lock, flags);
1311 #if 1
1312         snd_cs4231_mce_down(chip);
1313 #else
1314         /* The following is a workaround to avoid freeze after resume on TP600E.
1315            This is the first half of copy of snd_cs4231_mce_down(), but doesn't
1316            include rescheduling.  -- iwai
1317            */
1318         snd_cs4231_busy_wait(chip);
1319         spin_lock_irqsave(&chip->reg_lock, flags);
1320         chip->mce_bit &= ~CS4231_MCE;
1321         timeout = cs4231_inb(chip, CS4231P(REGSEL));
1322         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
1323         spin_unlock_irqrestore(&chip->reg_lock, flags);
1324         if (timeout == 0x80)
1325                 snd_printk("down [0x%lx]: serious init problem - codec still busy\n", chip->port);
1326         if ((timeout & CS4231_MCE) == 0 ||
1327             !(chip->hardware & (CS4231_HW_CS4231_MASK | CS4231_HW_CS4232_MASK))) {
1328                 return;
1329         }
1330         snd_cs4231_busy_wait(chip);
1331 #endif
1332 }
1333 #endif /* CONFIG_PM */
1334
1335 static int snd_cs4231_free(struct snd_cs4231 *chip)
1336 {
1337         release_and_free_resource(chip->res_port);
1338         release_and_free_resource(chip->res_cport);
1339         if (chip->irq >= 0) {
1340                 disable_irq(chip->irq);
1341                 if (!(chip->hwshare & CS4231_HWSHARE_IRQ))
1342                         free_irq(chip->irq, (void *) chip);
1343         }
1344         if (!(chip->hwshare & CS4231_HWSHARE_DMA1) && chip->dma1 >= 0) {
1345                 snd_dma_disable(chip->dma1);
1346                 free_dma(chip->dma1);
1347         }
1348         if (!(chip->hwshare & CS4231_HWSHARE_DMA2) && chip->dma2 >= 0 && chip->dma2 != chip->dma1) {
1349                 snd_dma_disable(chip->dma2);
1350                 free_dma(chip->dma2);
1351         }
1352         if (chip->timer)
1353                 snd_device_free(chip->card, chip->timer);
1354         kfree(chip);
1355         return 0;
1356 }
1357
1358 static int snd_cs4231_dev_free(struct snd_device *device)
1359 {
1360         struct snd_cs4231 *chip = device->device_data;
1361         return snd_cs4231_free(chip);   
1362 }
1363
1364 const char *snd_cs4231_chip_id(struct snd_cs4231 *chip)
1365 {
1366         switch (chip->hardware) {
1367         case CS4231_HW_CS4231:  return "CS4231";
1368         case CS4231_HW_CS4231A: return "CS4231A";
1369         case CS4231_HW_CS4232:  return "CS4232";
1370         case CS4231_HW_CS4232A: return "CS4232A";
1371         case CS4231_HW_CS4235:  return "CS4235";
1372         case CS4231_HW_CS4236:  return "CS4236";
1373         case CS4231_HW_CS4236B: return "CS4236B";
1374         case CS4231_HW_CS4237B: return "CS4237B";
1375         case CS4231_HW_CS4238B: return "CS4238B";
1376         case CS4231_HW_CS4239:  return "CS4239";
1377         case CS4231_HW_INTERWAVE: return "AMD InterWave";
1378         case CS4231_HW_OPL3SA2: return chip->card->shortname;
1379         case CS4231_HW_AD1845: return "AD1845";
1380         default: return "???";
1381         }
1382 }
1383
1384 static int snd_cs4231_new(struct snd_card *card,
1385                           unsigned short hardware,
1386                           unsigned short hwshare,
1387                           struct snd_cs4231 ** rchip)
1388 {
1389         struct snd_cs4231 *chip;
1390
1391         *rchip = NULL;
1392         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1393         if (chip == NULL)
1394                 return -ENOMEM;
1395         chip->hardware = hardware;
1396         chip->hwshare = hwshare;
1397
1398         spin_lock_init(&chip->reg_lock);
1399         mutex_init(&chip->mce_mutex);
1400         mutex_init(&chip->open_mutex);
1401         chip->card = card;
1402         chip->rate_constraint = snd_cs4231_xrate;
1403         chip->set_playback_format = snd_cs4231_playback_format;
1404         chip->set_capture_format = snd_cs4231_capture_format;
1405         memcpy(&chip->image, &snd_cs4231_original_image, sizeof(snd_cs4231_original_image));
1406         
1407         *rchip = chip;
1408         return 0;
1409 }
1410
1411 int snd_cs4231_create(struct snd_card *card,
1412                       unsigned long port,
1413                       unsigned long cport,
1414                       int irq, int dma1, int dma2,
1415                       unsigned short hardware,
1416                       unsigned short hwshare,
1417                       struct snd_cs4231 ** rchip)
1418 {
1419         static struct snd_device_ops ops = {
1420                 .dev_free =     snd_cs4231_dev_free,
1421         };
1422         struct snd_cs4231 *chip;
1423         int err;
1424
1425         err = snd_cs4231_new(card, hardware, hwshare, &chip);
1426         if (err < 0)
1427                 return err;
1428         
1429         chip->irq = -1;
1430         chip->dma1 = -1;
1431         chip->dma2 = -1;
1432
1433         if ((chip->res_port = request_region(port, 4, "CS4231")) == NULL) {
1434                 snd_printk(KERN_ERR "cs4231: can't grab port 0x%lx\n", port);
1435                 snd_cs4231_free(chip);
1436                 return -EBUSY;
1437         }
1438         chip->port = port;
1439         if ((long)cport >= 0 && (chip->res_cport = request_region(cport, 8, "CS4232 Control")) == NULL) {
1440                 snd_printk(KERN_ERR "cs4231: can't grab control port 0x%lx\n", cport);
1441                 snd_cs4231_free(chip);
1442                 return -ENODEV;
1443         }
1444         chip->cport = cport;
1445         if (!(hwshare & CS4231_HWSHARE_IRQ) && request_irq(irq, snd_cs4231_interrupt, IRQF_DISABLED, "CS4231", (void *) chip)) {
1446                 snd_printk(KERN_ERR "cs4231: can't grab IRQ %d\n", irq);
1447                 snd_cs4231_free(chip);
1448                 return -EBUSY;
1449         }
1450         chip->irq = irq;
1451         if (!(hwshare & CS4231_HWSHARE_DMA1) && request_dma(dma1, "CS4231 - 1")) {
1452                 snd_printk(KERN_ERR "cs4231: can't grab DMA1 %d\n", dma1);
1453                 snd_cs4231_free(chip);
1454                 return -EBUSY;
1455         }
1456         chip->dma1 = dma1;
1457         if (!(hwshare & CS4231_HWSHARE_DMA2) && dma1 != dma2 && dma2 >= 0 && request_dma(dma2, "CS4231 - 2")) {
1458                 snd_printk(KERN_ERR "cs4231: can't grab DMA2 %d\n", dma2);
1459                 snd_cs4231_free(chip);
1460                 return -EBUSY;
1461         }
1462         if (dma1 == dma2 || dma2 < 0) {
1463                 chip->single_dma = 1;
1464                 chip->dma2 = chip->dma1;
1465         } else
1466                 chip->dma2 = dma2;
1467
1468         /* global setup */
1469         if (snd_cs4231_probe(chip) < 0) {
1470                 snd_cs4231_free(chip);
1471                 return -ENODEV;
1472         }
1473         snd_cs4231_init(chip);
1474
1475 #if 0
1476         if (chip->hardware & CS4231_HW_CS4232_MASK) {
1477                 if (chip->res_cport == NULL)
1478                         snd_printk("CS4232 control port features are not accessible\n");
1479         }
1480 #endif
1481
1482         /* Register device */
1483         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1484                 snd_cs4231_free(chip);
1485                 return err;
1486         }
1487
1488 #ifdef CONFIG_PM
1489         /* Power Management */
1490         chip->suspend = snd_cs4231_suspend;
1491         chip->resume = snd_cs4231_resume;
1492 #endif
1493
1494         *rchip = chip;
1495         return 0;
1496 }
1497
1498 static struct snd_pcm_ops snd_cs4231_playback_ops = {
1499         .open =         snd_cs4231_playback_open,
1500         .close =        snd_cs4231_playback_close,
1501         .ioctl =        snd_pcm_lib_ioctl,
1502         .hw_params =    snd_cs4231_playback_hw_params,
1503         .hw_free =      snd_cs4231_playback_hw_free,
1504         .prepare =      snd_cs4231_playback_prepare,
1505         .trigger =      snd_cs4231_trigger,
1506         .pointer =      snd_cs4231_playback_pointer,
1507 };
1508
1509 static struct snd_pcm_ops snd_cs4231_capture_ops = {
1510         .open =         snd_cs4231_capture_open,
1511         .close =        snd_cs4231_capture_close,
1512         .ioctl =        snd_pcm_lib_ioctl,
1513         .hw_params =    snd_cs4231_capture_hw_params,
1514         .hw_free =      snd_cs4231_capture_hw_free,
1515         .prepare =      snd_cs4231_capture_prepare,
1516         .trigger =      snd_cs4231_trigger,
1517         .pointer =      snd_cs4231_capture_pointer,
1518 };
1519
1520 int snd_cs4231_pcm(struct snd_cs4231 *chip, int device, struct snd_pcm **rpcm)
1521 {
1522         struct snd_pcm *pcm;
1523         int err;
1524
1525         if ((err = snd_pcm_new(chip->card, "CS4231", device, 1, 1, &pcm)) < 0)
1526                 return err;
1527
1528         spin_lock_init(&chip->reg_lock);
1529         mutex_init(&chip->mce_mutex);
1530         mutex_init(&chip->open_mutex);
1531
1532         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_cs4231_playback_ops);
1533         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cs4231_capture_ops);
1534         
1535         /* global setup */
1536         pcm->private_data = chip;
1537         pcm->info_flags = 0;
1538         if (chip->single_dma)
1539                 pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
1540         if (chip->hardware != CS4231_HW_INTERWAVE)
1541                 pcm->info_flags |= SNDRV_PCM_INFO_JOINT_DUPLEX;
1542         strcpy(pcm->name, snd_cs4231_chip_id(chip));
1543
1544         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1545                                               snd_dma_isa_data(),
1546                                               64*1024, chip->dma1 > 3 || chip->dma2 > 3 ? 128*1024 : 64*1024);
1547
1548         chip->pcm = pcm;
1549         if (rpcm)
1550                 *rpcm = pcm;
1551         return 0;
1552 }
1553
1554 static void snd_cs4231_timer_free(struct snd_timer *timer)
1555 {
1556         struct snd_cs4231 *chip = timer->private_data;
1557         chip->timer = NULL;
1558 }
1559
1560 int snd_cs4231_timer(struct snd_cs4231 *chip, int device, struct snd_timer **rtimer)
1561 {
1562         struct snd_timer *timer;
1563         struct snd_timer_id tid;
1564         int err;
1565
1566         /* Timer initialization */
1567         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1568         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1569         tid.card = chip->card->number;
1570         tid.device = device;
1571         tid.subdevice = 0;
1572         if ((err = snd_timer_new(chip->card, "CS4231", &tid, &timer)) < 0)
1573                 return err;
1574         strcpy(timer->name, snd_cs4231_chip_id(chip));
1575         timer->private_data = chip;
1576         timer->private_free = snd_cs4231_timer_free;
1577         timer->hw = snd_cs4231_timer_table;
1578         chip->timer = timer;
1579         if (rtimer)
1580                 *rtimer = timer;
1581         return 0;
1582 }
1583         
1584 /*
1585  *  MIXER part
1586  */
1587
1588 static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1589 {
1590         static char *texts[4] = {
1591                 "Line", "Aux", "Mic", "Mix"
1592         };
1593         static char *opl3sa_texts[4] = {
1594                 "Line", "CD", "Mic", "Mix"
1595         };
1596         static char *gusmax_texts[4] = {
1597                 "Line", "Synth", "Mic", "Mix"
1598         };
1599         char **ptexts = texts;
1600         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1601
1602         snd_assert(chip->card != NULL, return -EINVAL);
1603         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1604         uinfo->count = 2;
1605         uinfo->value.enumerated.items = 4;
1606         if (uinfo->value.enumerated.item > 3)
1607                 uinfo->value.enumerated.item = 3;
1608         if (!strcmp(chip->card->driver, "GUS MAX"))
1609                 ptexts = gusmax_texts;
1610         switch (chip->hardware) {
1611         case CS4231_HW_INTERWAVE: ptexts = gusmax_texts; break;
1612         case CS4231_HW_OPL3SA2: ptexts = opl3sa_texts; break;
1613         }
1614         strcpy(uinfo->value.enumerated.name, ptexts[uinfo->value.enumerated.item]);
1615         return 0;
1616 }
1617
1618 static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1619 {
1620         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1621         unsigned long flags;
1622         
1623         spin_lock_irqsave(&chip->reg_lock, flags);
1624         ucontrol->value.enumerated.item[0] = (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1625         ucontrol->value.enumerated.item[1] = (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1626         spin_unlock_irqrestore(&chip->reg_lock, flags);
1627         return 0;
1628 }
1629
1630 static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1631 {
1632         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1633         unsigned long flags;
1634         unsigned short left, right;
1635         int change;
1636         
1637         if (ucontrol->value.enumerated.item[0] > 3 ||
1638             ucontrol->value.enumerated.item[1] > 3)
1639                 return -EINVAL;
1640         left = ucontrol->value.enumerated.item[0] << 6;
1641         right = ucontrol->value.enumerated.item[1] << 6;
1642         spin_lock_irqsave(&chip->reg_lock, flags);
1643         left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1644         right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1645         change = left != chip->image[CS4231_LEFT_INPUT] ||
1646                  right != chip->image[CS4231_RIGHT_INPUT];
1647         snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1648         snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1649         spin_unlock_irqrestore(&chip->reg_lock, flags);
1650         return change;
1651 }
1652
1653 int snd_cs4231_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1654 {
1655         int mask = (kcontrol->private_value >> 16) & 0xff;
1656
1657         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1658         uinfo->count = 1;
1659         uinfo->value.integer.min = 0;
1660         uinfo->value.integer.max = mask;
1661         return 0;
1662 }
1663
1664 int snd_cs4231_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1665 {
1666         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1667         unsigned long flags;
1668         int reg = kcontrol->private_value & 0xff;
1669         int shift = (kcontrol->private_value >> 8) & 0xff;
1670         int mask = (kcontrol->private_value >> 16) & 0xff;
1671         int invert = (kcontrol->private_value >> 24) & 0xff;
1672         
1673         spin_lock_irqsave(&chip->reg_lock, flags);
1674         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1675         spin_unlock_irqrestore(&chip->reg_lock, flags);
1676         if (invert)
1677                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1678         return 0;
1679 }
1680
1681 int snd_cs4231_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1682 {
1683         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1684         unsigned long flags;
1685         int reg = kcontrol->private_value & 0xff;
1686         int shift = (kcontrol->private_value >> 8) & 0xff;
1687         int mask = (kcontrol->private_value >> 16) & 0xff;
1688         int invert = (kcontrol->private_value >> 24) & 0xff;
1689         int change;
1690         unsigned short val;
1691         
1692         val = (ucontrol->value.integer.value[0] & mask);
1693         if (invert)
1694                 val = mask - val;
1695         val <<= shift;
1696         spin_lock_irqsave(&chip->reg_lock, flags);
1697         val = (chip->image[reg] & ~(mask << shift)) | val;
1698         change = val != chip->image[reg];
1699         snd_cs4231_out(chip, reg, val);
1700         spin_unlock_irqrestore(&chip->reg_lock, flags);
1701         return change;
1702 }
1703
1704 int snd_cs4231_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1705 {
1706         int mask = (kcontrol->private_value >> 24) & 0xff;
1707
1708         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1709         uinfo->count = 2;
1710         uinfo->value.integer.min = 0;
1711         uinfo->value.integer.max = mask;
1712         return 0;
1713 }
1714
1715 int snd_cs4231_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1716 {
1717         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1718         unsigned long flags;
1719         int left_reg = kcontrol->private_value & 0xff;
1720         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1721         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1722         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1723         int mask = (kcontrol->private_value >> 24) & 0xff;
1724         int invert = (kcontrol->private_value >> 22) & 1;
1725         
1726         spin_lock_irqsave(&chip->reg_lock, flags);
1727         ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
1728         ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
1729         spin_unlock_irqrestore(&chip->reg_lock, flags);
1730         if (invert) {
1731                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1732                 ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1733         }
1734         return 0;
1735 }
1736
1737 int snd_cs4231_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1738 {
1739         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1740         unsigned long flags;
1741         int left_reg = kcontrol->private_value & 0xff;
1742         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1743         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1744         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1745         int mask = (kcontrol->private_value >> 24) & 0xff;
1746         int invert = (kcontrol->private_value >> 22) & 1;
1747         int change;
1748         unsigned short val1, val2;
1749         
1750         val1 = ucontrol->value.integer.value[0] & mask;
1751         val2 = ucontrol->value.integer.value[1] & mask;
1752         if (invert) {
1753                 val1 = mask - val1;
1754                 val2 = mask - val2;
1755         }
1756         val1 <<= shift_left;
1757         val2 <<= shift_right;
1758         spin_lock_irqsave(&chip->reg_lock, flags);
1759         val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1760         val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1761         change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
1762         snd_cs4231_out(chip, left_reg, val1);
1763         snd_cs4231_out(chip, right_reg, val2);
1764         spin_unlock_irqrestore(&chip->reg_lock, flags);
1765         return change;
1766 }
1767
1768 static struct snd_kcontrol_new snd_cs4231_controls[] = {
1769 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1770 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1771 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1772 CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1773 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1774 CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1775 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1776 CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1777 CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1778 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1779 CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1780 CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1781 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0, 15, 0),
1782 {
1783         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1784         .name = "Capture Source",
1785         .info = snd_cs4231_info_mux,
1786         .get = snd_cs4231_get_mux,
1787         .put = snd_cs4231_put_mux,
1788 },
1789 CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5, 1, 0),
1790 CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1791 CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1)
1792 };
1793                                         
1794 int snd_cs4231_mixer(struct snd_cs4231 *chip)
1795 {
1796         struct snd_card *card;
1797         unsigned int idx;
1798         int err;
1799
1800         snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1801
1802         card = chip->card;
1803
1804         strcpy(card->mixername, chip->pcm->name);
1805
1806         for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1807                 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4231_controls[idx], chip))) < 0)
1808                         return err;
1809         }
1810         return 0;
1811 }
1812
1813 EXPORT_SYMBOL(snd_cs4231_out);
1814 EXPORT_SYMBOL(snd_cs4231_in);
1815 EXPORT_SYMBOL(snd_cs4236_ext_out);
1816 EXPORT_SYMBOL(snd_cs4236_ext_in);
1817 EXPORT_SYMBOL(snd_cs4231_mce_up);
1818 EXPORT_SYMBOL(snd_cs4231_mce_down);
1819 EXPORT_SYMBOL(snd_cs4231_interrupt);
1820 EXPORT_SYMBOL(snd_cs4231_chip_id);
1821 EXPORT_SYMBOL(snd_cs4231_create);
1822 EXPORT_SYMBOL(snd_cs4231_pcm);
1823 EXPORT_SYMBOL(snd_cs4231_mixer);
1824 EXPORT_SYMBOL(snd_cs4231_timer);
1825 EXPORT_SYMBOL(snd_cs4231_info_single);
1826 EXPORT_SYMBOL(snd_cs4231_get_single);
1827 EXPORT_SYMBOL(snd_cs4231_put_single);
1828 EXPORT_SYMBOL(snd_cs4231_info_double);
1829 EXPORT_SYMBOL(snd_cs4231_get_double);
1830 EXPORT_SYMBOL(snd_cs4231_put_double);
1831
1832 /*
1833  *  INIT part
1834  */
1835
1836 static int __init alsa_cs4231_init(void)
1837 {
1838         return 0;
1839 }
1840
1841 static void __exit alsa_cs4231_exit(void)
1842 {
1843 }
1844
1845 module_init(alsa_cs4231_init)
1846 module_exit(alsa_cs4231_exit)