Linux-2.6.12-rc2
[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 snd_pcm_hw_constraint_list_t hw_constraints_rates = {
77         .count = 14,
78         .list = rates,
79         .mask = 0,
80 };
81
82 static int snd_cs4231_xrate(snd_pcm_runtime_t *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 #if !defined(EBUS_SUPPORT) && !defined(SBUS_SUPPORT)
128 #define __CS4231_INLINE__ inline
129 #else
130 #define __CS4231_INLINE__ /* nothing */
131 #endif
132
133 static __CS4231_INLINE__ void cs4231_outb(cs4231_t *chip, u8 offset, u8 val)
134 {
135 #ifdef EBUS_SUPPORT
136         if (chip->ebus->flag) {
137                 writeb(val, chip->port + (offset << 2));
138         } else {
139 #endif
140 #ifdef SBUS_SUPPORT
141                 sbus_writeb(val, chip->port + (offset << 2));
142 #endif
143 #ifdef EBUS_SUPPORT
144         }
145 #endif
146 #ifdef LEGACY_SUPPORT
147         outb(val, chip->port + offset);
148 #endif
149 }
150
151 static __CS4231_INLINE__ u8 cs4231_inb(cs4231_t *chip, u8 offset)
152 {
153 #ifdef EBUS_SUPPORT
154         if (chip->ebus_flag) {
155                 return readb(chip->port + (offset << 2));
156         } else {
157 #endif
158 #ifdef SBUS_SUPPORT
159                 return sbus_readb(chip->port + (offset << 2));
160 #endif
161 #ifdef EBUS_SUPPORT
162         }
163 #endif
164 #ifdef LEGACY_SUPPORT
165         return inb(chip->port + offset);
166 #endif
167 }
168
169 static void snd_cs4231_outm(cs4231_t *chip, unsigned char reg,
170                             unsigned char mask, unsigned char value)
171 {
172         int timeout;
173         unsigned char tmp;
174
175         for (timeout = 250;
176              timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
177              timeout--)
178                 udelay(100);
179 #ifdef CONFIG_SND_DEBUG
180         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
181                 snd_printk("outm: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
182 #endif
183         if (chip->calibrate_mute) {
184                 chip->image[reg] &= mask;
185                 chip->image[reg] |= value;
186         } else {
187                 cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
188                 mb();
189                 tmp = (chip->image[reg] & mask) | value;
190                 cs4231_outb(chip, CS4231P(REG), tmp);
191                 chip->image[reg] = tmp;
192                 mb();
193         }
194 }
195
196 static void snd_cs4231_dout(cs4231_t *chip, unsigned char reg, unsigned char value)
197 {
198         int timeout;
199
200         for (timeout = 250;
201              timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
202              timeout--)
203                 udelay(10);
204         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
205         cs4231_outb(chip, CS4231P(REG), value);
206         mb();
207 }
208
209 void snd_cs4231_out(cs4231_t *chip, unsigned char reg, unsigned char value)
210 {
211         int timeout;
212
213         for (timeout = 250;
214              timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
215              timeout--)
216                 udelay(100);
217 #ifdef CONFIG_SND_DEBUG
218         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
219                 snd_printk("out: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
220 #endif
221         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
222         cs4231_outb(chip, CS4231P(REG), value);
223         chip->image[reg] = value;
224         mb();
225 #if 0
226         printk("codec out - reg 0x%x = 0x%x\n", chip->mce_bit | reg, value);
227 #endif
228 }
229
230 unsigned char snd_cs4231_in(cs4231_t *chip, unsigned char reg)
231 {
232         int timeout;
233
234         for (timeout = 250;
235              timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
236              timeout--)
237                 udelay(100);
238 #ifdef CONFIG_SND_DEBUG
239         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
240                 snd_printk("in: auto calibration time out - reg = 0x%x\n", reg);
241 #endif
242         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
243         mb();
244         return cs4231_inb(chip, CS4231P(REG));
245 }
246
247 void snd_cs4236_ext_out(cs4231_t *chip, unsigned char reg, unsigned char val)
248 {
249         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | 0x17);
250         cs4231_outb(chip, CS4231P(REG), reg | (chip->image[CS4236_EXT_REG] & 0x01));
251         cs4231_outb(chip, CS4231P(REG), val);
252         chip->eimage[CS4236_REG(reg)] = val;
253 #if 0
254         printk("ext out : reg = 0x%x, val = 0x%x\n", reg, val);
255 #endif
256 }
257
258 unsigned char snd_cs4236_ext_in(cs4231_t *chip, unsigned char reg)
259 {
260         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | 0x17);
261         cs4231_outb(chip, CS4231P(REG), reg | (chip->image[CS4236_EXT_REG] & 0x01));
262 #if 1
263         return cs4231_inb(chip, CS4231P(REG));
264 #else
265         {
266                 unsigned char res;
267                 res = cs4231_inb(chip, CS4231P(REG));
268                 printk("ext in : reg = 0x%x, val = 0x%x\n", reg, res);
269                 return res;
270         }
271 #endif
272 }
273
274 #if 0
275
276 static void snd_cs4231_debug(cs4231_t *chip)
277 {
278         printk("CS4231 REGS:      INDEX = 0x%02x  ", cs4231_inb(chip, CS4231P(REGSEL)));
279         printk("                 STATUS = 0x%02x\n", cs4231_inb(chip, CS4231P(STATUS)));
280         printk("  0x00: left input      = 0x%02x  ", snd_cs4231_in(chip, 0x00));
281         printk("  0x10: alt 1 (CFIG 2)  = 0x%02x\n", snd_cs4231_in(chip, 0x10));
282         printk("  0x01: right input     = 0x%02x  ", snd_cs4231_in(chip, 0x01));
283         printk("  0x11: alt 2 (CFIG 3)  = 0x%02x\n", snd_cs4231_in(chip, 0x11));
284         printk("  0x02: GF1 left input  = 0x%02x  ", snd_cs4231_in(chip, 0x02));
285         printk("  0x12: left line in    = 0x%02x\n", snd_cs4231_in(chip, 0x12));
286         printk("  0x03: GF1 right input = 0x%02x  ", snd_cs4231_in(chip, 0x03));
287         printk("  0x13: right line in   = 0x%02x\n", snd_cs4231_in(chip, 0x13));
288         printk("  0x04: CD left input   = 0x%02x  ", snd_cs4231_in(chip, 0x04));
289         printk("  0x14: timer low       = 0x%02x\n", snd_cs4231_in(chip, 0x14));
290         printk("  0x05: CD right input  = 0x%02x  ", snd_cs4231_in(chip, 0x05));
291         printk("  0x15: timer high      = 0x%02x\n", snd_cs4231_in(chip, 0x15));
292         printk("  0x06: left output     = 0x%02x  ", snd_cs4231_in(chip, 0x06));
293         printk("  0x16: left MIC (PnP)  = 0x%02x\n", snd_cs4231_in(chip, 0x16));
294         printk("  0x07: right output    = 0x%02x  ", snd_cs4231_in(chip, 0x07));
295         printk("  0x17: right MIC (PnP) = 0x%02x\n", snd_cs4231_in(chip, 0x17));
296         printk("  0x08: playback format = 0x%02x  ", snd_cs4231_in(chip, 0x08));
297         printk("  0x18: IRQ status      = 0x%02x\n", snd_cs4231_in(chip, 0x18));
298         printk("  0x09: iface (CFIG 1)  = 0x%02x  ", snd_cs4231_in(chip, 0x09));
299         printk("  0x19: left line out   = 0x%02x\n", snd_cs4231_in(chip, 0x19));
300         printk("  0x0a: pin control     = 0x%02x  ", snd_cs4231_in(chip, 0x0a));
301         printk("  0x1a: mono control    = 0x%02x\n", snd_cs4231_in(chip, 0x1a));
302         printk("  0x0b: init & status   = 0x%02x  ", snd_cs4231_in(chip, 0x0b));
303         printk("  0x1b: right line out  = 0x%02x\n", snd_cs4231_in(chip, 0x1b));
304         printk("  0x0c: revision & mode = 0x%02x  ", snd_cs4231_in(chip, 0x0c));
305         printk("  0x1c: record format   = 0x%02x\n", snd_cs4231_in(chip, 0x1c));
306         printk("  0x0d: loopback        = 0x%02x  ", snd_cs4231_in(chip, 0x0d));
307         printk("  0x1d: var freq (PnP)  = 0x%02x\n", snd_cs4231_in(chip, 0x1d));
308         printk("  0x0e: ply upr count   = 0x%02x  ", snd_cs4231_in(chip, 0x0e));
309         printk("  0x1e: ply lwr count   = 0x%02x\n", snd_cs4231_in(chip, 0x1e));
310         printk("  0x0f: rec upr count   = 0x%02x  ", snd_cs4231_in(chip, 0x0f));
311         printk("  0x1f: rec lwr count   = 0x%02x\n", snd_cs4231_in(chip, 0x1f));
312 }
313
314 #endif
315
316 /*
317  *  CS4231 detection / MCE routines
318  */
319
320 static void snd_cs4231_busy_wait(cs4231_t *chip)
321 {
322         int timeout;
323
324         /* huh.. looks like this sequence is proper for CS4231A chip (GUS MAX) */
325         for (timeout = 5; timeout > 0; timeout--)
326                 cs4231_inb(chip, CS4231P(REGSEL));
327         /* end of cleanup sequence */
328         for (timeout = 250;
329              timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
330              timeout--)
331                 udelay(10);
332 }
333
334 void snd_cs4231_mce_up(cs4231_t *chip)
335 {
336         unsigned long flags;
337         int timeout;
338
339         for (timeout = 250; timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT); timeout--)
340                 udelay(100);
341 #ifdef CONFIG_SND_DEBUG
342         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
343                 snd_printk("mce_up - auto calibration time out (0)\n");
344 #endif
345         spin_lock_irqsave(&chip->reg_lock, flags);
346         chip->mce_bit |= CS4231_MCE;
347         timeout = cs4231_inb(chip, CS4231P(REGSEL));
348         if (timeout == 0x80)
349                 snd_printk("mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
350         if (!(timeout & CS4231_MCE))
351                 cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
352         spin_unlock_irqrestore(&chip->reg_lock, flags);
353 }
354
355 void snd_cs4231_mce_down(cs4231_t *chip)
356 {
357         unsigned long flags;
358         int timeout;
359
360         snd_cs4231_busy_wait(chip);
361 #if 0
362         printk("(1) timeout = %i\n", timeout);
363 #endif
364 #ifdef CONFIG_SND_DEBUG
365         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
366                 snd_printk("mce_down [0x%lx] - auto calibration time out (0)\n", (long)CS4231P(REGSEL));
367 #endif
368         spin_lock_irqsave(&chip->reg_lock, flags);
369         chip->mce_bit &= ~CS4231_MCE;
370         timeout = cs4231_inb(chip, CS4231P(REGSEL));
371         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
372         spin_unlock_irqrestore(&chip->reg_lock, flags);
373         if (timeout == 0x80)
374                 snd_printk("mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
375         if ((timeout & CS4231_MCE) == 0 ||
376             !(chip->hardware & (CS4231_HW_CS4231_MASK | CS4231_HW_CS4232_MASK))) {
377                 return;
378         }
379         snd_cs4231_busy_wait(chip);
380
381         /* calibration process */
382
383         for (timeout = 500; timeout > 0 && (snd_cs4231_in(chip, CS4231_TEST_INIT) & CS4231_CALIB_IN_PROGRESS) == 0; timeout--)
384                 udelay(10);
385         if ((snd_cs4231_in(chip, CS4231_TEST_INIT) & CS4231_CALIB_IN_PROGRESS) == 0) {
386                 snd_printd("cs4231_mce_down - auto calibration time out (1)\n");
387                 return;
388         }
389 #if 0
390         printk("(2) timeout = %i, jiffies = %li\n", timeout, jiffies);
391 #endif
392         /* in 10 ms increments, check condition, up to 250 ms */
393         timeout = 25;
394         while (snd_cs4231_in(chip, CS4231_TEST_INIT) & CS4231_CALIB_IN_PROGRESS) {
395                 if (--timeout < 0) {
396                         snd_printk("mce_down - auto calibration time out (2)\n");
397                         return;
398                 }
399                 msleep(10);
400         }
401 #if 0
402         printk("(3) jiffies = %li\n", jiffies);
403 #endif
404         /* in 10 ms increments, check condition, up to 100 ms */
405         timeout = 10;
406         while (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT) {
407                 if (--timeout < 0) {
408                         snd_printk(KERN_ERR "mce_down - auto calibration time out (3)\n");
409                         return;
410                 }
411                 msleep(10);
412         }
413 #if 0
414         printk("(4) jiffies = %li\n", jiffies);
415         snd_printk("mce_down - exit = 0x%x\n", cs4231_inb(chip, CS4231P(REGSEL)));
416 #endif
417 }
418
419 static unsigned int snd_cs4231_get_count(unsigned char format, unsigned int size)
420 {
421         switch (format & 0xe0) {
422         case CS4231_LINEAR_16:
423         case CS4231_LINEAR_16_BIG:
424                 size >>= 1;
425                 break;
426         case CS4231_ADPCM_16:
427                 return size >> 2;
428         }
429         if (format & CS4231_STEREO)
430                 size >>= 1;
431         return size;
432 }
433
434 static int snd_cs4231_trigger(snd_pcm_substream_t *substream,
435                               int cmd)
436 {
437         cs4231_t *chip = snd_pcm_substream_chip(substream);
438         int result = 0;
439         unsigned int what;
440         struct list_head *pos;
441         snd_pcm_substream_t *s;
442         int do_start;
443
444 #if 0
445         printk("codec trigger!!! - what = %i, enable = %i, status = 0x%x\n", what, enable, cs4231_inb(chip, CS4231P(STATUS)));
446 #endif
447
448         switch (cmd) {
449         case SNDRV_PCM_TRIGGER_START:
450         case SNDRV_PCM_TRIGGER_RESUME:
451                 do_start = 1; break;
452         case SNDRV_PCM_TRIGGER_STOP:
453         case SNDRV_PCM_TRIGGER_SUSPEND:
454                 do_start = 0; break;
455         default:
456                 return -EINVAL;
457         }
458
459         what = 0;
460         snd_pcm_group_for_each(pos, substream) {
461                 s = snd_pcm_group_substream_entry(pos);
462                 if (s == chip->playback_substream) {
463                         what |= CS4231_PLAYBACK_ENABLE;
464                         snd_pcm_trigger_done(s, substream);
465                 } else if (s == chip->capture_substream) {
466                         what |= CS4231_RECORD_ENABLE;
467                         snd_pcm_trigger_done(s, substream);
468                 }
469         }
470         spin_lock(&chip->reg_lock);
471         if (do_start) {
472                 chip->image[CS4231_IFACE_CTRL] |= what;
473                 if (chip->trigger)
474                         chip->trigger(chip, what, 1);
475         } else {
476                 chip->image[CS4231_IFACE_CTRL] &= ~what;
477                 if (chip->trigger)
478                         chip->trigger(chip, what, 0);
479         }
480         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
481         spin_unlock(&chip->reg_lock);
482 #if 0
483         snd_cs4231_debug(chip);
484 #endif
485         return result;
486 }
487
488 /*
489  *  CODEC I/O
490  */
491
492 static unsigned char snd_cs4231_get_rate(unsigned int rate)
493 {
494         int i;
495
496         for (i = 0; i < 14; i++)
497                 if (rate == rates[i])
498                         return freq_bits[i];
499         // snd_BUG();
500         return freq_bits[13];
501 }
502
503 static unsigned char snd_cs4231_get_format(cs4231_t *chip,
504                                            int format,
505                                            int channels)
506 {
507         unsigned char rformat;
508
509         rformat = CS4231_LINEAR_8;
510         switch (format) {
511         case SNDRV_PCM_FORMAT_MU_LAW:   rformat = CS4231_ULAW_8; break;
512         case SNDRV_PCM_FORMAT_A_LAW:    rformat = CS4231_ALAW_8; break;
513         case SNDRV_PCM_FORMAT_S16_LE:   rformat = CS4231_LINEAR_16; break;
514         case SNDRV_PCM_FORMAT_S16_BE:   rformat = CS4231_LINEAR_16_BIG; break;
515         case SNDRV_PCM_FORMAT_IMA_ADPCM:        rformat = CS4231_ADPCM_16; break;
516         }
517         if (channels > 1)
518                 rformat |= CS4231_STEREO;
519 #if 0
520         snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
521 #endif
522         return rformat;
523 }
524
525 static void snd_cs4231_calibrate_mute(cs4231_t *chip, int mute)
526 {
527         unsigned long flags;
528
529         mute = mute ? 1 : 0;
530         spin_lock_irqsave(&chip->reg_lock, flags);
531         if (chip->calibrate_mute == mute) {
532                 spin_unlock_irqrestore(&chip->reg_lock, flags);
533                 return;
534         }
535         if (!mute) {
536                 snd_cs4231_dout(chip, CS4231_LEFT_INPUT, chip->image[CS4231_LEFT_INPUT]);
537                 snd_cs4231_dout(chip, CS4231_RIGHT_INPUT, chip->image[CS4231_RIGHT_INPUT]);
538                 snd_cs4231_dout(chip, CS4231_LOOPBACK, chip->image[CS4231_LOOPBACK]);
539         }
540         snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
541         snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
542         snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
543         snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
544         snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT, mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
545         snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT, mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
546         snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN, mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
547         snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN, mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
548         snd_cs4231_dout(chip, CS4231_MONO_CTRL, mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
549         if (chip->hardware == CS4231_HW_INTERWAVE) {
550                 snd_cs4231_dout(chip, CS4231_LEFT_MIC_INPUT, mute ? 0x80 : chip->image[CS4231_LEFT_MIC_INPUT]);
551                 snd_cs4231_dout(chip, CS4231_RIGHT_MIC_INPUT, mute ? 0x80 : chip->image[CS4231_RIGHT_MIC_INPUT]);               
552                 snd_cs4231_dout(chip, CS4231_LINE_LEFT_OUTPUT, mute ? 0x80 : chip->image[CS4231_LINE_LEFT_OUTPUT]);
553                 snd_cs4231_dout(chip, CS4231_LINE_RIGHT_OUTPUT, mute ? 0x80 : chip->image[CS4231_LINE_RIGHT_OUTPUT]);
554         }
555         chip->calibrate_mute = mute;
556         spin_unlock_irqrestore(&chip->reg_lock, flags);
557 }
558
559 static void snd_cs4231_playback_format(cs4231_t *chip,
560                                        snd_pcm_hw_params_t *params,
561                                        unsigned char pdfr)
562 {
563         unsigned long flags;
564         int full_calib = 1;
565
566         down(&chip->mce_mutex);
567         snd_cs4231_calibrate_mute(chip, 1);
568         if (chip->hardware == CS4231_HW_CS4231A ||
569             (chip->hardware & CS4231_HW_CS4232_MASK)) {
570                 spin_lock_irqsave(&chip->reg_lock, flags);
571                 if ((chip->image[CS4231_PLAYBK_FORMAT] & 0x0f) == (pdfr & 0x0f)) {      /* rate is same? */
572                         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | 0x10);
573                         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT] = pdfr);
574                         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~0x10);
575                         udelay(100); /* Fixes audible clicks at least on GUS MAX */
576                         full_calib = 0;
577                 }
578                 spin_unlock_irqrestore(&chip->reg_lock, flags);
579         }
580         if (full_calib) {
581                 snd_cs4231_mce_up(chip);
582                 spin_lock_irqsave(&chip->reg_lock, flags);
583                 if (chip->hardware != CS4231_HW_INTERWAVE && !chip->single_dma) {
584                         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
585                                         (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
586                                         (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
587                                         pdfr);
588                 } else {
589                         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT] = pdfr);
590                 }
591                 spin_unlock_irqrestore(&chip->reg_lock, flags);
592                 snd_cs4231_mce_down(chip);
593         }
594         snd_cs4231_calibrate_mute(chip, 0);
595         up(&chip->mce_mutex);
596 }
597
598 static void snd_cs4231_capture_format(cs4231_t *chip,
599                                       snd_pcm_hw_params_t *params,
600                                       unsigned char cdfr)
601 {
602         unsigned long flags;
603         int full_calib = 1;
604
605         down(&chip->mce_mutex);
606         snd_cs4231_calibrate_mute(chip, 1);
607         if (chip->hardware == CS4231_HW_CS4231A ||
608             (chip->hardware & CS4231_HW_CS4232_MASK)) {
609                 spin_lock_irqsave(&chip->reg_lock, flags);
610                 if ((chip->image[CS4231_PLAYBK_FORMAT] & 0x0f) == (cdfr & 0x0f) ||      /* rate is same? */
611                     (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
612                         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | 0x20);
613                         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT] = cdfr);
614                         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~0x20);
615                         full_calib = 0;
616                 }
617                 spin_unlock_irqrestore(&chip->reg_lock, flags);
618         }
619         if (full_calib) {
620                 snd_cs4231_mce_up(chip);
621                 spin_lock_irqsave(&chip->reg_lock, flags);
622                 if (chip->hardware != CS4231_HW_INTERWAVE) {
623                         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
624                                 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
625                                                ((chip->single_dma ? cdfr : chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
626                                                (cdfr & 0x0f));
627                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
628                                 snd_cs4231_mce_down(chip);
629                                 snd_cs4231_mce_up(chip);
630                                 spin_lock_irqsave(&chip->reg_lock, flags);
631                         }
632                 }
633                 snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
634                 spin_unlock_irqrestore(&chip->reg_lock, flags);
635                 snd_cs4231_mce_down(chip);
636         }
637         snd_cs4231_calibrate_mute(chip, 0);
638         up(&chip->mce_mutex);
639 }
640
641 /*
642  *  Timer interface
643  */
644
645 static unsigned long snd_cs4231_timer_resolution(snd_timer_t * timer)
646 {
647         cs4231_t *chip = snd_timer_chip(timer);
648         if (chip->hardware & CS4231_HW_CS4236B_MASK)
649                 return 14467;
650         else
651                 return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
652 }
653
654 static int snd_cs4231_timer_start(snd_timer_t * timer)
655 {
656         unsigned long flags;
657         unsigned int ticks;
658         cs4231_t *chip = snd_timer_chip(timer);
659         spin_lock_irqsave(&chip->reg_lock, flags);
660         ticks = timer->sticks;
661         if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
662             (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
663             (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
664                 snd_cs4231_out(chip, CS4231_TIMER_HIGH, chip->image[CS4231_TIMER_HIGH] = (unsigned char) (ticks >> 8));
665                 snd_cs4231_out(chip, CS4231_TIMER_LOW, chip->image[CS4231_TIMER_LOW] = (unsigned char) ticks);
666                 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | CS4231_TIMER_ENABLE);
667         }
668         spin_unlock_irqrestore(&chip->reg_lock, flags);
669         return 0;
670 }
671
672 static int snd_cs4231_timer_stop(snd_timer_t * timer)
673 {
674         unsigned long flags;
675         cs4231_t *chip = snd_timer_chip(timer);
676         spin_lock_irqsave(&chip->reg_lock, flags);
677         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE);
678         spin_unlock_irqrestore(&chip->reg_lock, flags);
679         return 0;
680 }
681
682 static void snd_cs4231_init(cs4231_t *chip)
683 {
684         unsigned long flags;
685
686         snd_cs4231_mce_down(chip);
687
688 #ifdef SNDRV_DEBUG_MCE
689         snd_printk("init: (1)\n");
690 #endif
691         snd_cs4231_mce_up(chip);
692         spin_lock_irqsave(&chip->reg_lock, flags);
693         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
694                              CS4231_RECORD_ENABLE | CS4231_RECORD_PIO |
695                              CS4231_CALIB_MODE);
696         chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
697         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
698         spin_unlock_irqrestore(&chip->reg_lock, flags);
699         snd_cs4231_mce_down(chip);
700
701 #ifdef SNDRV_DEBUG_MCE
702         snd_printk("init: (2)\n");
703 #endif
704
705         snd_cs4231_mce_up(chip);
706         spin_lock_irqsave(&chip->reg_lock, flags);
707         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1]);
708         spin_unlock_irqrestore(&chip->reg_lock, flags);
709         snd_cs4231_mce_down(chip);
710
711 #ifdef SNDRV_DEBUG_MCE
712         snd_printk("init: (3) - afei = 0x%x\n", chip->image[CS4231_ALT_FEATURE_1]);
713 #endif
714
715         spin_lock_irqsave(&chip->reg_lock, flags);
716         snd_cs4231_out(chip, CS4231_ALT_FEATURE_2, chip->image[CS4231_ALT_FEATURE_2]);
717         spin_unlock_irqrestore(&chip->reg_lock, flags);
718
719         snd_cs4231_mce_up(chip);
720         spin_lock_irqsave(&chip->reg_lock, flags);
721         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT]);
722         spin_unlock_irqrestore(&chip->reg_lock, flags);
723         snd_cs4231_mce_down(chip);
724
725 #ifdef SNDRV_DEBUG_MCE
726         snd_printk("init: (4)\n");
727 #endif
728
729         snd_cs4231_mce_up(chip);
730         spin_lock_irqsave(&chip->reg_lock, flags);
731         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
732         spin_unlock_irqrestore(&chip->reg_lock, flags);
733         snd_cs4231_mce_down(chip);
734
735 #ifdef SNDRV_DEBUG_MCE
736         snd_printk("init: (5)\n");
737 #endif
738 }
739
740 static int snd_cs4231_open(cs4231_t *chip, unsigned int mode)
741 {
742         unsigned long flags;
743
744         down(&chip->open_mutex);
745         if ((chip->mode & mode) ||
746             ((chip->mode & CS4231_MODE_OPEN) && chip->single_dma)) {
747                 up(&chip->open_mutex);
748                 return -EAGAIN;
749         }
750         if (chip->mode & CS4231_MODE_OPEN) {
751                 chip->mode |= mode;
752                 up(&chip->open_mutex);
753                 return 0;
754         }
755         /* ok. now enable and ack CODEC IRQ */
756         spin_lock_irqsave(&chip->reg_lock, flags);
757         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
758                        CS4231_RECORD_IRQ |
759                        CS4231_TIMER_IRQ);
760         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
761         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
762         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
763         chip->image[CS4231_PIN_CTRL] |= CS4231_IRQ_ENABLE;
764         snd_cs4231_out(chip, CS4231_PIN_CTRL, chip->image[CS4231_PIN_CTRL]);
765         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
766                        CS4231_RECORD_IRQ |
767                        CS4231_TIMER_IRQ);
768         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
769         spin_unlock_irqrestore(&chip->reg_lock, flags);
770
771         chip->mode = mode;
772         up(&chip->open_mutex);
773         return 0;
774 }
775
776 static void snd_cs4231_close(cs4231_t *chip, unsigned int mode)
777 {
778         unsigned long flags;
779
780         down(&chip->open_mutex);
781         chip->mode &= ~mode;
782         if (chip->mode & CS4231_MODE_OPEN) {
783                 up(&chip->open_mutex);
784                 return;
785         }
786         snd_cs4231_calibrate_mute(chip, 1);
787
788         /* disable IRQ */
789         spin_lock_irqsave(&chip->reg_lock, flags);
790         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
791         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
792         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
793         chip->image[CS4231_PIN_CTRL] &= ~CS4231_IRQ_ENABLE;
794         snd_cs4231_out(chip, CS4231_PIN_CTRL, chip->image[CS4231_PIN_CTRL]);
795
796         /* now disable record & playback */
797
798         if (chip->image[CS4231_IFACE_CTRL] & (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
799                                                CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
800                 spin_unlock_irqrestore(&chip->reg_lock, flags);
801                 snd_cs4231_mce_up(chip);
802                 spin_lock_irqsave(&chip->reg_lock, flags);
803                 chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
804                                                      CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
805                 snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
806                 spin_unlock_irqrestore(&chip->reg_lock, flags);
807                 snd_cs4231_mce_down(chip);
808                 spin_lock_irqsave(&chip->reg_lock, flags);
809         }
810
811         /* clear IRQ again */
812         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
813         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
814         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
815         spin_unlock_irqrestore(&chip->reg_lock, flags);
816
817         snd_cs4231_calibrate_mute(chip, 0);
818
819         chip->mode = 0;
820         up(&chip->open_mutex);
821 }
822
823 /*
824  *  timer open/close
825  */
826
827 static int snd_cs4231_timer_open(snd_timer_t * timer)
828 {
829         cs4231_t *chip = snd_timer_chip(timer);
830         snd_cs4231_open(chip, CS4231_MODE_TIMER);
831         return 0;
832 }
833
834 static int snd_cs4231_timer_close(snd_timer_t * timer)
835 {
836         cs4231_t *chip = snd_timer_chip(timer);
837         snd_cs4231_close(chip, CS4231_MODE_TIMER);
838         return 0;
839 }
840
841 static struct _snd_timer_hardware snd_cs4231_timer_table =
842 {
843         .flags =        SNDRV_TIMER_HW_AUTO,
844         .resolution =   9945,
845         .ticks =        65535,
846         .open =         snd_cs4231_timer_open,
847         .close =        snd_cs4231_timer_close,
848         .c_resolution = snd_cs4231_timer_resolution,
849         .start =        snd_cs4231_timer_start,
850         .stop =         snd_cs4231_timer_stop,
851 };
852
853 /*
854  *  ok.. exported functions..
855  */
856
857 static int snd_cs4231_playback_hw_params(snd_pcm_substream_t * substream,
858                                          snd_pcm_hw_params_t * hw_params)
859 {
860         cs4231_t *chip = snd_pcm_substream_chip(substream);
861         unsigned char new_pdfr;
862         int err;
863
864         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
865                 return err;
866         new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params), params_channels(hw_params)) |
867                    snd_cs4231_get_rate(params_rate(hw_params));
868         chip->set_playback_format(chip, hw_params, new_pdfr);
869         return 0;
870 }
871
872 static int snd_cs4231_playback_hw_free(snd_pcm_substream_t * substream)
873 {
874         return snd_pcm_lib_free_pages(substream);
875 }
876
877 #ifdef LEGACY_SUPPORT
878 static int snd_cs4231_playback_prepare(snd_pcm_substream_t * substream)
879 {
880         cs4231_t *chip = snd_pcm_substream_chip(substream);
881         snd_pcm_runtime_t *runtime = substream->runtime;
882         unsigned long flags;
883         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
884         unsigned int count = snd_pcm_lib_period_bytes(substream);
885
886         spin_lock_irqsave(&chip->reg_lock, flags);
887         chip->p_dma_size = size;
888         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO);
889         snd_dma_program(chip->dma1, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
890         count = snd_cs4231_get_count(chip->image[CS4231_PLAYBK_FORMAT], count) - 1;
891         snd_cs4231_out(chip, CS4231_PLY_LWR_CNT, (unsigned char) count);
892         snd_cs4231_out(chip, CS4231_PLY_UPR_CNT, (unsigned char) (count >> 8));
893         spin_unlock_irqrestore(&chip->reg_lock, flags);
894 #if 0
895         snd_cs4231_debug(chip);
896 #endif
897         return 0;
898 }
899 #endif /* LEGACY_SUPPORT */
900
901 static int snd_cs4231_capture_hw_params(snd_pcm_substream_t * substream,
902                                         snd_pcm_hw_params_t * hw_params)
903 {
904         cs4231_t *chip = snd_pcm_substream_chip(substream);
905         unsigned char new_cdfr;
906         int err;
907
908         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
909                 return err;
910         new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params), params_channels(hw_params)) |
911                    snd_cs4231_get_rate(params_rate(hw_params));
912         chip->set_capture_format(chip, hw_params, new_cdfr);
913         return 0;
914 }
915
916 static int snd_cs4231_capture_hw_free(snd_pcm_substream_t * substream)
917 {
918         return snd_pcm_lib_free_pages(substream);
919 }
920
921 #ifdef LEGACY_SUPPORT
922 static int snd_cs4231_capture_prepare(snd_pcm_substream_t * substream)
923 {
924         cs4231_t *chip = snd_pcm_substream_chip(substream);
925         snd_pcm_runtime_t *runtime = substream->runtime;
926         unsigned long flags;
927         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
928         unsigned int count = snd_pcm_lib_period_bytes(substream);
929
930         spin_lock_irqsave(&chip->reg_lock, flags);
931         chip->c_dma_size = size;
932         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
933         snd_dma_program(chip->dma2, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
934         count = snd_cs4231_get_count(chip->image[CS4231_REC_FORMAT], count) - 1;
935         if (chip->single_dma && chip->hardware != CS4231_HW_INTERWAVE) {
936                 snd_cs4231_out(chip, CS4231_PLY_LWR_CNT, (unsigned char) count);
937                 snd_cs4231_out(chip, CS4231_PLY_UPR_CNT, (unsigned char) (count >> 8));
938         } else {
939                 snd_cs4231_out(chip, CS4231_REC_LWR_CNT, (unsigned char) count);
940                 snd_cs4231_out(chip, CS4231_REC_UPR_CNT, (unsigned char) (count >> 8));
941         }
942         spin_unlock_irqrestore(&chip->reg_lock, flags);
943         return 0;
944 }
945 #endif
946
947 static void snd_cs4231_overrange(cs4231_t *chip)
948 {
949         unsigned long flags;
950         unsigned char res;
951
952         spin_lock_irqsave(&chip->reg_lock, flags);
953         res = snd_cs4231_in(chip, CS4231_TEST_INIT);
954         spin_unlock_irqrestore(&chip->reg_lock, flags);
955         if (res & (0x08 | 0x02))        /* detect overrange only above 0dB; may be user selectable? */
956                 chip->capture_substream->runtime->overrange++;
957 }
958
959 irqreturn_t snd_cs4231_interrupt(int irq, void *dev_id, struct pt_regs *regs)
960 {
961         cs4231_t *chip = dev_id;
962         unsigned char status;
963
964         status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
965         if (status & CS4231_TIMER_IRQ) {
966                 if (chip->timer)
967                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
968         }               
969         if (chip->single_dma && chip->hardware != CS4231_HW_INTERWAVE) {
970                 if (status & CS4231_PLAYBACK_IRQ) {
971                         if (chip->mode & CS4231_MODE_PLAY) {
972                                 if (chip->playback_substream)
973                                         snd_pcm_period_elapsed(chip->playback_substream);
974                         }
975                         if (chip->mode & CS4231_MODE_RECORD) {
976                                 if (chip->capture_substream) {
977                                         snd_cs4231_overrange(chip);
978                                         snd_pcm_period_elapsed(chip->capture_substream);
979                                 }
980                         }
981                 }
982         } else {
983                 if (status & CS4231_PLAYBACK_IRQ) {
984                         if (chip->playback_substream)
985                                 snd_pcm_period_elapsed(chip->playback_substream);
986                 }
987                 if (status & CS4231_RECORD_IRQ) {
988                         if (chip->capture_substream) {
989                                 snd_cs4231_overrange(chip);
990                                 snd_pcm_period_elapsed(chip->capture_substream);
991                         }
992                 }
993         }
994
995         spin_lock(&chip->reg_lock);
996         snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
997         spin_unlock(&chip->reg_lock);
998         return IRQ_HANDLED;
999 }
1000
1001 #ifdef LEGACY_SUPPORT
1002 static snd_pcm_uframes_t snd_cs4231_playback_pointer(snd_pcm_substream_t * substream)
1003 {
1004         cs4231_t *chip = snd_pcm_substream_chip(substream);
1005         size_t ptr;
1006
1007         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
1008                 return 0;
1009         ptr = snd_dma_pointer(chip->dma1, chip->p_dma_size);
1010         return bytes_to_frames(substream->runtime, ptr);
1011 }
1012
1013 static snd_pcm_uframes_t snd_cs4231_capture_pointer(snd_pcm_substream_t * substream)
1014 {
1015         cs4231_t *chip = snd_pcm_substream_chip(substream);
1016         size_t ptr;
1017         
1018         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
1019                 return 0;
1020         ptr = snd_dma_pointer(chip->dma2, chip->c_dma_size);
1021         return bytes_to_frames(substream->runtime, ptr);
1022 }
1023 #endif /* LEGACY_SUPPORT */
1024
1025 /*
1026
1027  */
1028
1029 static int snd_cs4231_probe(cs4231_t *chip)
1030 {
1031         unsigned long flags;
1032         int i, id, rev;
1033         unsigned char *ptr;
1034         unsigned int hw;
1035
1036 #if 0
1037         snd_cs4231_debug(chip);
1038 #endif
1039         id = 0;
1040         for (i = 0; i < 50; i++) {
1041                 mb();
1042                 if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
1043                         udelay(2000);
1044                 else {
1045                         spin_lock_irqsave(&chip->reg_lock, flags);
1046                         snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
1047                         id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
1048                         spin_unlock_irqrestore(&chip->reg_lock, flags);
1049                         if (id == 0x0a)
1050                                 break;  /* this is valid value */
1051                 }
1052         }
1053         snd_printdd("cs4231: port = 0x%lx, id = 0x%x\n", chip->port, id);
1054         if (id != 0x0a)
1055                 return -ENODEV; /* no valid device found */
1056
1057         if (((hw = chip->hardware) & CS4231_HW_TYPE_MASK) == CS4231_HW_DETECT) {
1058                 rev = snd_cs4231_in(chip, CS4231_VERSION) & 0xe7;
1059                 snd_printdd("CS4231: VERSION (I25) = 0x%x\n", rev);
1060                 if (rev == 0x80) {
1061                         unsigned char tmp = snd_cs4231_in(chip, 23);
1062                         snd_cs4231_out(chip, 23, ~tmp);
1063                         if (snd_cs4231_in(chip, 23) != tmp)
1064                                 chip->hardware = CS4231_HW_AD1845;
1065                         else
1066                                 chip->hardware = CS4231_HW_CS4231;
1067                 } else if (rev == 0xa0) {
1068                         chip->hardware = CS4231_HW_CS4231A;
1069                 } else if (rev == 0xa2) {
1070                         chip->hardware = CS4231_HW_CS4232;
1071                 } else if (rev == 0xb2) {
1072                         chip->hardware = CS4231_HW_CS4232A;
1073                 } else if (rev == 0x83) {
1074                         chip->hardware = CS4231_HW_CS4236;
1075                 } else if (rev == 0x03) {
1076                         chip->hardware = CS4231_HW_CS4236B;
1077                 } else {
1078                         snd_printk("unknown CS chip with version 0x%x\n", rev);
1079                         return -ENODEV;         /* unknown CS4231 chip? */
1080                 }
1081         }
1082         spin_lock_irqsave(&chip->reg_lock, flags);
1083         cs4231_inb(chip, CS4231P(STATUS));      /* clear any pendings IRQ */
1084         cs4231_outb(chip, CS4231P(STATUS), 0);
1085         mb();
1086         spin_unlock_irqrestore(&chip->reg_lock, flags);
1087
1088         chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1089         switch (chip->hardware) {
1090         case CS4231_HW_INTERWAVE:
1091                 chip->image[CS4231_MISC_INFO] = CS4231_IW_MODE3;
1092                 break;
1093         case CS4231_HW_CS4235:
1094         case CS4231_HW_CS4236B:
1095         case CS4231_HW_CS4237B:
1096         case CS4231_HW_CS4238B:
1097         case CS4231_HW_CS4239:
1098                 if (hw == CS4231_HW_DETECT3)
1099                         chip->image[CS4231_MISC_INFO] = CS4231_4236_MODE3;
1100                 else
1101                         chip->hardware = CS4231_HW_CS4236;
1102                 break;
1103         }
1104
1105         chip->image[CS4231_IFACE_CTRL] =
1106             (chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA) |
1107             (chip->single_dma ? CS4231_SINGLE_DMA : 0);
1108         chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1109         chip->image[CS4231_ALT_FEATURE_2] = chip->hardware == CS4231_HW_INTERWAVE ? 0xc2 : 0x01;
1110         ptr = (unsigned char *) &chip->image;
1111         snd_cs4231_mce_down(chip);
1112         spin_lock_irqsave(&chip->reg_lock, flags);
1113         for (i = 0; i < 32; i++)        /* ok.. fill all CS4231 registers */
1114                 snd_cs4231_out(chip, i, *ptr++);
1115         spin_unlock_irqrestore(&chip->reg_lock, flags);
1116         snd_cs4231_mce_up(chip);
1117         snd_cs4231_mce_down(chip);
1118
1119         mdelay(2);
1120
1121         /* ok.. try check hardware version for CS4236+ chips */
1122         if ((hw & CS4231_HW_TYPE_MASK) == CS4231_HW_DETECT) {
1123                 if (chip->hardware == CS4231_HW_CS4236B) {
1124                         rev = snd_cs4236_ext_in(chip, CS4236_VERSION);
1125                         snd_cs4236_ext_out(chip, CS4236_VERSION, 0xff);
1126                         id = snd_cs4236_ext_in(chip, CS4236_VERSION);
1127                         snd_cs4236_ext_out(chip, CS4236_VERSION, rev);
1128                         snd_printdd("CS4231: ext version; rev = 0x%x, id = 0x%x\n", rev, id);
1129                         if ((id & 0x1f) == 0x1d) {      /* CS4235 */
1130                                 chip->hardware = CS4231_HW_CS4235;
1131                                 switch (id >> 5) {
1132                                 case 4:
1133                                 case 5:
1134                                 case 6:
1135                                         break;
1136                                 default:
1137                                         snd_printk("unknown CS4235 chip (enhanced version = 0x%x)\n", id);
1138                                 }
1139                         } else if ((id & 0x1f) == 0x0b) {       /* CS4236/B */
1140                                 switch (id >> 5) {
1141                                 case 4:
1142                                 case 5:
1143                                 case 6:
1144                                 case 7:
1145                                         chip->hardware = CS4231_HW_CS4236B;
1146                                         break;
1147                                 default:
1148                                         snd_printk("unknown CS4236 chip (enhanced version = 0x%x)\n", id);
1149                                 }
1150                         } else if ((id & 0x1f) == 0x08) {       /* CS4237B */
1151                                 chip->hardware = CS4231_HW_CS4237B;
1152                                 switch (id >> 5) {
1153                                 case 4:
1154                                 case 5:
1155                                 case 6:
1156                                 case 7:
1157                                         break;
1158                                 default:
1159                                         snd_printk("unknown CS4237B chip (enhanced version = 0x%x)\n", id);
1160                                 }
1161                         } else if ((id & 0x1f) == 0x09) {       /* CS4238B */
1162                                 chip->hardware = CS4231_HW_CS4238B;
1163                                 switch (id >> 5) {
1164                                 case 5:
1165                                 case 6:
1166                                 case 7:
1167                                         break;
1168                                 default:
1169                                         snd_printk("unknown CS4238B chip (enhanced version = 0x%x)\n", id);
1170                                 }
1171                         } else if ((id & 0x1f) == 0x1e) {       /* CS4239 */
1172                                 chip->hardware = CS4231_HW_CS4239;
1173                                 switch (id >> 5) {
1174                                 case 4:
1175                                 case 5:
1176                                 case 6:
1177                                         break;
1178                                 default:
1179                                         snd_printk("unknown CS4239 chip (enhanced version = 0x%x)\n", id);
1180                                 }
1181                         } else {
1182                                 snd_printk("unknown CS4236/CS423xB chip (enhanced version = 0x%x)\n", id);
1183                         }
1184                 }
1185         }
1186         return 0;               /* all things are ok.. */
1187 }
1188
1189 /*
1190
1191  */
1192
1193 static snd_pcm_hardware_t snd_cs4231_playback =
1194 {
1195         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1196                                  SNDRV_PCM_INFO_MMAP_VALID |
1197                                  SNDRV_PCM_INFO_RESUME |
1198                                  SNDRV_PCM_INFO_SYNC_START),
1199         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
1200                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
1201         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
1202         .rate_min =             5510,
1203         .rate_max =             48000,
1204         .channels_min =         1,
1205         .channels_max =         2,
1206         .buffer_bytes_max =     (128*1024),
1207         .period_bytes_min =     64,
1208         .period_bytes_max =     (128*1024),
1209         .periods_min =          1,
1210         .periods_max =          1024,
1211         .fifo_size =            0,
1212 };
1213
1214 static snd_pcm_hardware_t snd_cs4231_capture =
1215 {
1216         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1217                                  SNDRV_PCM_INFO_MMAP_VALID |
1218                                  SNDRV_PCM_INFO_RESUME |
1219                                  SNDRV_PCM_INFO_SYNC_START),
1220         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
1221                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
1222         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
1223         .rate_min =             5510,
1224         .rate_max =             48000,
1225         .channels_min =         1,
1226         .channels_max =         2,
1227         .buffer_bytes_max =     (128*1024),
1228         .period_bytes_min =     64,
1229         .period_bytes_max =     (128*1024),
1230         .periods_min =          1,
1231         .periods_max =          1024,
1232         .fifo_size =            0,
1233 };
1234
1235 /*
1236
1237  */
1238
1239 static int snd_cs4231_playback_open(snd_pcm_substream_t * substream)
1240 {
1241         cs4231_t *chip = snd_pcm_substream_chip(substream);
1242         snd_pcm_runtime_t *runtime = substream->runtime;
1243         int err;
1244
1245         runtime->hw = snd_cs4231_playback;
1246
1247         /* hardware bug in InterWave chipset */
1248         if (chip->hardware == CS4231_HW_INTERWAVE && chip->dma1 > 3)
1249                 runtime->hw.formats &= ~SNDRV_PCM_FMTBIT_MU_LAW;
1250         
1251         /* hardware limitation of cheap chips */
1252         if (chip->hardware == CS4231_HW_CS4235 ||
1253             chip->hardware == CS4231_HW_CS4239)
1254                 runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE;
1255
1256 #ifdef LEGACY_SUPPORT
1257         snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.buffer_bytes_max);
1258         snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.period_bytes_max);
1259
1260         if (chip->claim_dma) {
1261                 if ((err = chip->claim_dma(chip, chip->dma_private_data, chip->dma1)) < 0)
1262                         return err;
1263         }
1264 #endif
1265
1266         if ((err = snd_cs4231_open(chip, CS4231_MODE_PLAY)) < 0) {
1267 #ifdef LEGACY_SUPPORT
1268                 if (chip->release_dma)
1269                         chip->release_dma(chip, chip->dma_private_data, chip->dma1);
1270 #endif
1271                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1272                 return err;
1273         }
1274         chip->playback_substream = substream;
1275 #if defined(SBUS_SUPPORT) || defined(EBUS_SUPPORT)
1276         chip->p_periods_sent = 0;
1277 #endif
1278         snd_pcm_set_sync(substream);
1279         chip->rate_constraint(runtime);
1280         return 0;
1281 }
1282
1283 static int snd_cs4231_capture_open(snd_pcm_substream_t * substream)
1284 {
1285         cs4231_t *chip = snd_pcm_substream_chip(substream);
1286         snd_pcm_runtime_t *runtime = substream->runtime;
1287         int err;
1288
1289         runtime->hw = snd_cs4231_capture;
1290
1291         /* hardware limitation of cheap chips */
1292         if (chip->hardware == CS4231_HW_CS4235 ||
1293             chip->hardware == CS4231_HW_CS4239)
1294                 runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE;
1295
1296 #ifdef LEGACY_SUPPORT
1297         snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.buffer_bytes_max);
1298         snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.period_bytes_max);
1299
1300         if (chip->claim_dma) {
1301                 if ((err = chip->claim_dma(chip, chip->dma_private_data, chip->dma2)) < 0)
1302                         return err;
1303         }
1304 #endif
1305
1306         if ((err = snd_cs4231_open(chip, CS4231_MODE_RECORD)) < 0) {
1307 #ifdef LEGACY_SUPPORT
1308                 if (chip->release_dma)
1309                         chip->release_dma(chip, chip->dma_private_data, chip->dma2);
1310 #endif
1311                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1312                 return err;
1313         }
1314         chip->capture_substream = substream;
1315 #if defined(SBUS_SUPPORT) || defined(EBUS_SUPPORT)
1316         chip->c_periods_sent = 0;
1317 #endif
1318         snd_pcm_set_sync(substream);
1319         chip->rate_constraint(runtime);
1320         return 0;
1321 }
1322
1323 static int snd_cs4231_playback_close(snd_pcm_substream_t * substream)
1324 {
1325         cs4231_t *chip = snd_pcm_substream_chip(substream);
1326
1327         chip->playback_substream = NULL;
1328         snd_cs4231_close(chip, CS4231_MODE_PLAY);
1329         return 0;
1330 }
1331
1332 static int snd_cs4231_capture_close(snd_pcm_substream_t * substream)
1333 {
1334         cs4231_t *chip = snd_pcm_substream_chip(substream);
1335
1336         chip->capture_substream = NULL;
1337         snd_cs4231_close(chip, CS4231_MODE_RECORD);
1338         return 0;
1339 }
1340
1341 #ifdef CONFIG_PM
1342
1343 /* lowlevel suspend callback for CS4231 */
1344 static void snd_cs4231_suspend(cs4231_t *chip)
1345 {
1346         int reg;
1347         unsigned long flags;
1348         
1349         spin_lock_irqsave(&chip->reg_lock, flags);
1350         for (reg = 0; reg < 32; reg++)
1351                 chip->image[reg] = snd_cs4231_in(chip, reg);
1352         spin_unlock_irqrestore(&chip->reg_lock, flags);
1353 }
1354
1355 /* lowlevel resume callback for CS4231 */
1356 static void snd_cs4231_resume(cs4231_t *chip)
1357 {
1358         int reg;
1359         unsigned long flags;
1360         int timeout;
1361         
1362         snd_cs4231_mce_up(chip);
1363         spin_lock_irqsave(&chip->reg_lock, flags);
1364         for (reg = 0; reg < 32; reg++) {
1365                 switch (reg) {
1366                 case CS4231_VERSION:
1367                         break;
1368                 default:
1369                         snd_cs4231_out(chip, reg, chip->image[reg]);
1370                         break;
1371                 }
1372         }
1373         spin_unlock_irqrestore(&chip->reg_lock, flags);
1374 #if 0
1375         snd_cs4231_mce_down(chip);
1376 #else
1377         /* The following is a workaround to avoid freeze after resume on TP600E.
1378            This is the first half of copy of snd_cs4231_mce_down(), but doesn't
1379            include rescheduling.  -- iwai
1380            */
1381         snd_cs4231_busy_wait(chip);
1382         spin_lock_irqsave(&chip->reg_lock, flags);
1383         chip->mce_bit &= ~CS4231_MCE;
1384         timeout = cs4231_inb(chip, CS4231P(REGSEL));
1385         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
1386         spin_unlock_irqrestore(&chip->reg_lock, flags);
1387         if (timeout == 0x80)
1388                 snd_printk("down [0x%lx]: serious init problem - codec still busy\n", chip->port);
1389         if ((timeout & CS4231_MCE) == 0 ||
1390             !(chip->hardware & (CS4231_HW_CS4231_MASK | CS4231_HW_CS4232_MASK))) {
1391                 return;
1392         }
1393         snd_cs4231_busy_wait(chip);
1394 #endif
1395 }
1396
1397 static int snd_cs4231_pm_suspend(snd_card_t *card, pm_message_t state)
1398 {
1399         cs4231_t *chip = card->pm_private_data;
1400         if (chip->suspend)
1401                 chip->suspend(chip);
1402         return 0;
1403 }
1404
1405 static int snd_cs4231_pm_resume(snd_card_t *card)
1406 {
1407         cs4231_t *chip = card->pm_private_data;
1408         if (chip->resume)
1409                 chip->resume(chip);
1410         return 0;
1411 }
1412 #endif /* CONFIG_PM */
1413
1414 #ifdef LEGACY_SUPPORT
1415
1416 static int snd_cs4231_free(cs4231_t *chip)
1417 {
1418         if (chip->res_port) {
1419                 release_resource(chip->res_port);
1420                 kfree_nocheck(chip->res_port);
1421         }
1422         if (chip->res_cport) {
1423                 release_resource(chip->res_cport);
1424                 kfree_nocheck(chip->res_cport);
1425         }
1426         if (chip->irq >= 0) {
1427                 disable_irq(chip->irq);
1428                 if (!(chip->hwshare & CS4231_HWSHARE_IRQ))
1429                         free_irq(chip->irq, (void *) chip);
1430         }
1431         if (!(chip->hwshare & CS4231_HWSHARE_DMA1) && chip->dma1 >= 0) {
1432                 snd_dma_disable(chip->dma1);
1433                 free_dma(chip->dma1);
1434         }
1435         if (!(chip->hwshare & CS4231_HWSHARE_DMA2) && chip->dma2 >= 0 && chip->dma2 != chip->dma1) {
1436                 snd_dma_disable(chip->dma2);
1437                 free_dma(chip->dma2);
1438         }
1439         if (chip->timer)
1440                 snd_device_free(chip->card, chip->timer);
1441         kfree(chip);
1442         return 0;
1443 }
1444
1445 static int snd_cs4231_dev_free(snd_device_t *device)
1446 {
1447         cs4231_t *chip = device->device_data;
1448         return snd_cs4231_free(chip);   
1449 }
1450
1451 #endif /* LEGACY_SUPPORT */
1452
1453 const char *snd_cs4231_chip_id(cs4231_t *chip)
1454 {
1455         switch (chip->hardware) {
1456         case CS4231_HW_CS4231:  return "CS4231";
1457         case CS4231_HW_CS4231A: return "CS4231A";
1458         case CS4231_HW_CS4232:  return "CS4232";
1459         case CS4231_HW_CS4232A: return "CS4232A";
1460         case CS4231_HW_CS4235:  return "CS4235";
1461         case CS4231_HW_CS4236:  return "CS4236";
1462         case CS4231_HW_CS4236B: return "CS4236B";
1463         case CS4231_HW_CS4237B: return "CS4237B";
1464         case CS4231_HW_CS4238B: return "CS4238B";
1465         case CS4231_HW_CS4239:  return "CS4239";
1466         case CS4231_HW_INTERWAVE: return "AMD InterWave";
1467         case CS4231_HW_OPL3SA2: return chip->card->shortname;
1468         case CS4231_HW_AD1845: return "AD1845";
1469         default: return "???";
1470         }
1471 }
1472
1473 static int snd_cs4231_new(snd_card_t * card,
1474                           unsigned short hardware,
1475                           unsigned short hwshare,
1476                           cs4231_t ** rchip)
1477 {
1478         cs4231_t *chip;
1479
1480         *rchip = NULL;
1481         chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
1482         if (chip == NULL)
1483                 return -ENOMEM;
1484         chip->hardware = hardware;
1485         chip->hwshare = hwshare;
1486
1487         spin_lock_init(&chip->reg_lock);
1488         init_MUTEX(&chip->mce_mutex);
1489         init_MUTEX(&chip->open_mutex);
1490         chip->card = card;
1491         chip->rate_constraint = snd_cs4231_xrate;
1492         chip->set_playback_format = snd_cs4231_playback_format;
1493         chip->set_capture_format = snd_cs4231_capture_format;
1494         memcpy(&chip->image, &snd_cs4231_original_image, sizeof(snd_cs4231_original_image));
1495         
1496         *rchip = chip;
1497         return 0;
1498 }
1499
1500 #ifdef LEGACY_SUPPORT
1501
1502 int snd_cs4231_create(snd_card_t * card,
1503                       unsigned long port,
1504                       unsigned long cport,
1505                       int irq, int dma1, int dma2,
1506                       unsigned short hardware,
1507                       unsigned short hwshare,
1508                       cs4231_t ** rchip)
1509 {
1510         static snd_device_ops_t ops = {
1511                 .dev_free =     snd_cs4231_dev_free,
1512         };
1513         cs4231_t *chip;
1514         int err;
1515
1516         err = snd_cs4231_new(card, hardware, hwshare, &chip);
1517         if (err < 0)
1518                 return err;
1519         
1520         chip->irq = -1;
1521         chip->dma1 = -1;
1522         chip->dma2 = -1;
1523
1524         if ((chip->res_port = request_region(port, 4, "CS4231")) == NULL) {
1525                 snd_printk(KERN_ERR "cs4231: can't grab port 0x%lx\n", port);
1526                 snd_cs4231_free(chip);
1527                 return -EBUSY;
1528         }
1529         chip->port = port;
1530         if ((long)cport >= 0 && (chip->res_cport = request_region(cport, 8, "CS4232 Control")) == NULL) {
1531                 snd_printk(KERN_ERR "cs4231: can't grab control port 0x%lx\n", cport);
1532                 snd_cs4231_free(chip);
1533                 return -ENODEV;
1534         }
1535         chip->cport = cport;
1536         if (!(hwshare & CS4231_HWSHARE_IRQ) && request_irq(irq, snd_cs4231_interrupt, SA_INTERRUPT, "CS4231", (void *) chip)) {
1537                 snd_printk(KERN_ERR "cs4231: can't grab IRQ %d\n", irq);
1538                 snd_cs4231_free(chip);
1539                 return -EBUSY;
1540         }
1541         chip->irq = irq;
1542         if (!(hwshare & CS4231_HWSHARE_DMA1) && request_dma(dma1, "CS4231 - 1")) {
1543                 snd_printk(KERN_ERR "cs4231: can't grab DMA1 %d\n", dma1);
1544                 snd_cs4231_free(chip);
1545                 return -EBUSY;
1546         }
1547         chip->dma1 = dma1;
1548         if (!(hwshare & CS4231_HWSHARE_DMA2) && dma1 != dma2 && dma2 >= 0 && request_dma(dma2, "CS4231 - 2")) {
1549                 snd_printk(KERN_ERR "cs4231: can't grab DMA2 %d\n", dma2);
1550                 snd_cs4231_free(chip);
1551                 return -EBUSY;
1552         }
1553         if (dma1 == dma2 || dma2 < 0) {
1554                 chip->single_dma = 1;
1555                 chip->dma2 = chip->dma1;
1556         } else
1557                 chip->dma2 = dma2;
1558
1559         /* global setup */
1560         if (snd_cs4231_probe(chip) < 0) {
1561                 snd_cs4231_free(chip);
1562                 return -ENODEV;
1563         }
1564         snd_cs4231_init(chip);
1565
1566         if (chip->hardware & CS4231_HW_CS4232_MASK) {
1567                 if (chip->res_cport == NULL)
1568                         snd_printk("CS4232 control port features are not accessible\n");
1569         }
1570
1571         /* Register device */
1572         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1573                 snd_cs4231_free(chip);
1574                 return err;
1575         }
1576
1577 #ifdef CONFIG_PM
1578         /* Power Management */
1579         chip->suspend = snd_cs4231_suspend;
1580         chip->resume = snd_cs4231_resume;
1581         snd_card_set_isa_pm_callback(card, snd_cs4231_pm_suspend, snd_cs4231_pm_resume, chip);
1582 #endif
1583
1584         *rchip = chip;
1585         return 0;
1586 }
1587
1588 #endif /* LEGACY_SUPPORT */
1589
1590 static snd_pcm_ops_t snd_cs4231_playback_ops = {
1591         .open =         snd_cs4231_playback_open,
1592         .close =        snd_cs4231_playback_close,
1593         .ioctl =        snd_pcm_lib_ioctl,
1594         .hw_params =    snd_cs4231_playback_hw_params,
1595         .hw_free =      snd_cs4231_playback_hw_free,
1596         .prepare =      snd_cs4231_playback_prepare,
1597         .trigger =      snd_cs4231_trigger,
1598         .pointer =      snd_cs4231_playback_pointer,
1599 };
1600
1601 static snd_pcm_ops_t snd_cs4231_capture_ops = {
1602         .open =         snd_cs4231_capture_open,
1603         .close =        snd_cs4231_capture_close,
1604         .ioctl =        snd_pcm_lib_ioctl,
1605         .hw_params =    snd_cs4231_capture_hw_params,
1606         .hw_free =      snd_cs4231_capture_hw_free,
1607         .prepare =      snd_cs4231_capture_prepare,
1608         .trigger =      snd_cs4231_trigger,
1609         .pointer =      snd_cs4231_capture_pointer,
1610 };
1611
1612 static void snd_cs4231_pcm_free(snd_pcm_t *pcm)
1613 {
1614         cs4231_t *chip = pcm->private_data;
1615         chip->pcm = NULL;
1616         snd_pcm_lib_preallocate_free_for_all(pcm);
1617 }
1618
1619 int snd_cs4231_pcm(cs4231_t *chip, int device, snd_pcm_t **rpcm)
1620 {
1621         snd_pcm_t *pcm;
1622         int err;
1623
1624         if ((err = snd_pcm_new(chip->card, "CS4231", device, 1, 1, &pcm)) < 0)
1625                 return err;
1626
1627         spin_lock_init(&chip->reg_lock);
1628         init_MUTEX(&chip->mce_mutex);
1629         init_MUTEX(&chip->open_mutex);
1630
1631         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_cs4231_playback_ops);
1632         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cs4231_capture_ops);
1633         
1634         /* global setup */
1635         pcm->private_data = chip;
1636         pcm->private_free = snd_cs4231_pcm_free;
1637         pcm->info_flags = 0;
1638         if (chip->single_dma)
1639                 pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
1640         if (chip->hardware != CS4231_HW_INTERWAVE)
1641                 pcm->info_flags |= SNDRV_PCM_INFO_JOINT_DUPLEX;
1642         strcpy(pcm->name, snd_cs4231_chip_id(chip));
1643
1644 #ifdef LEGACY_SUPPORT
1645         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1646                                               snd_dma_isa_data(),
1647                                               64*1024, chip->dma1 > 3 || chip->dma2 > 3 ? 128*1024 : 64*1024);
1648 #else
1649 #  ifdef EBUS_SUPPORT
1650         if (chip->ebus_flag) {
1651                 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1652                                                       chip->dev_u.pdev,
1653                                                       64*1024, 128*1024);
1654         } else {
1655 #  endif
1656 #  ifdef SBUS_SUPPORT
1657                 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_SBUS,
1658                                                       chip->dev_u.sdev,
1659                                                       64*1024, 128*1024);
1660 #  endif
1661 #  ifdef EBUS_SUPPORT
1662         }
1663 #  endif
1664 #endif
1665
1666         chip->pcm = pcm;
1667         if (rpcm)
1668                 *rpcm = pcm;
1669         return 0;
1670 }
1671
1672 static void snd_cs4231_timer_free(snd_timer_t *timer)
1673 {
1674         cs4231_t *chip = timer->private_data;
1675         chip->timer = NULL;
1676 }
1677
1678 int snd_cs4231_timer(cs4231_t *chip, int device, snd_timer_t **rtimer)
1679 {
1680         snd_timer_t *timer;
1681         snd_timer_id_t tid;
1682         int err;
1683
1684         /* Timer initialization */
1685         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1686         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1687         tid.card = chip->card->number;
1688         tid.device = device;
1689         tid.subdevice = 0;
1690         if ((err = snd_timer_new(chip->card, "CS4231", &tid, &timer)) < 0)
1691                 return err;
1692         strcpy(timer->name, snd_cs4231_chip_id(chip));
1693         timer->private_data = chip;
1694         timer->private_free = snd_cs4231_timer_free;
1695         timer->hw = snd_cs4231_timer_table;
1696         chip->timer = timer;
1697         if (rtimer)
1698                 *rtimer = timer;
1699         return 0;
1700 }
1701         
1702 /*
1703  *  MIXER part
1704  */
1705
1706 static int snd_cs4231_info_mux(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1707 {
1708         static char *texts[4] = {
1709                 "Line", "Aux", "Mic", "Mix"
1710         };
1711         static char *opl3sa_texts[4] = {
1712                 "Line", "CD", "Mic", "Mix"
1713         };
1714         static char *gusmax_texts[4] = {
1715                 "Line", "Synth", "Mic", "Mix"
1716         };
1717         char **ptexts = texts;
1718         cs4231_t *chip = snd_kcontrol_chip(kcontrol);
1719
1720         snd_assert(chip->card != NULL, return -EINVAL);
1721         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1722         uinfo->count = 2;
1723         uinfo->value.enumerated.items = 4;
1724         if (uinfo->value.enumerated.item > 3)
1725                 uinfo->value.enumerated.item = 3;
1726         if (!strcmp(chip->card->driver, "GUS MAX"))
1727                 ptexts = gusmax_texts;
1728         switch (chip->hardware) {
1729         case CS4231_HW_INTERWAVE: ptexts = gusmax_texts; break;
1730         case CS4231_HW_OPL3SA2: ptexts = opl3sa_texts; break;
1731         }
1732         strcpy(uinfo->value.enumerated.name, ptexts[uinfo->value.enumerated.item]);
1733         return 0;
1734 }
1735
1736 static int snd_cs4231_get_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1737 {
1738         cs4231_t *chip = snd_kcontrol_chip(kcontrol);
1739         unsigned long flags;
1740         
1741         spin_lock_irqsave(&chip->reg_lock, flags);
1742         ucontrol->value.enumerated.item[0] = (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1743         ucontrol->value.enumerated.item[1] = (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1744         spin_unlock_irqrestore(&chip->reg_lock, flags);
1745         return 0;
1746 }
1747
1748 static int snd_cs4231_put_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1749 {
1750         cs4231_t *chip = snd_kcontrol_chip(kcontrol);
1751         unsigned long flags;
1752         unsigned short left, right;
1753         int change;
1754         
1755         if (ucontrol->value.enumerated.item[0] > 3 ||
1756             ucontrol->value.enumerated.item[1] > 3)
1757                 return -EINVAL;
1758         left = ucontrol->value.enumerated.item[0] << 6;
1759         right = ucontrol->value.enumerated.item[1] << 6;
1760         spin_lock_irqsave(&chip->reg_lock, flags);
1761         left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1762         right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1763         change = left != chip->image[CS4231_LEFT_INPUT] ||
1764                  right != chip->image[CS4231_RIGHT_INPUT];
1765         snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1766         snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1767         spin_unlock_irqrestore(&chip->reg_lock, flags);
1768         return change;
1769 }
1770
1771 int snd_cs4231_info_single(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1772 {
1773         int mask = (kcontrol->private_value >> 16) & 0xff;
1774
1775         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1776         uinfo->count = 1;
1777         uinfo->value.integer.min = 0;
1778         uinfo->value.integer.max = mask;
1779         return 0;
1780 }
1781
1782 int snd_cs4231_get_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1783 {
1784         cs4231_t *chip = snd_kcontrol_chip(kcontrol);
1785         unsigned long flags;
1786         int reg = kcontrol->private_value & 0xff;
1787         int shift = (kcontrol->private_value >> 8) & 0xff;
1788         int mask = (kcontrol->private_value >> 16) & 0xff;
1789         int invert = (kcontrol->private_value >> 24) & 0xff;
1790         
1791         spin_lock_irqsave(&chip->reg_lock, flags);
1792         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1793         spin_unlock_irqrestore(&chip->reg_lock, flags);
1794         if (invert)
1795                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1796         return 0;
1797 }
1798
1799 int snd_cs4231_put_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1800 {
1801         cs4231_t *chip = snd_kcontrol_chip(kcontrol);
1802         unsigned long flags;
1803         int reg = kcontrol->private_value & 0xff;
1804         int shift = (kcontrol->private_value >> 8) & 0xff;
1805         int mask = (kcontrol->private_value >> 16) & 0xff;
1806         int invert = (kcontrol->private_value >> 24) & 0xff;
1807         int change;
1808         unsigned short val;
1809         
1810         val = (ucontrol->value.integer.value[0] & mask);
1811         if (invert)
1812                 val = mask - val;
1813         val <<= shift;
1814         spin_lock_irqsave(&chip->reg_lock, flags);
1815         val = (chip->image[reg] & ~(mask << shift)) | val;
1816         change = val != chip->image[reg];
1817         snd_cs4231_out(chip, reg, val);
1818         spin_unlock_irqrestore(&chip->reg_lock, flags);
1819         return change;
1820 }
1821
1822 int snd_cs4231_info_double(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1823 {
1824         int mask = (kcontrol->private_value >> 24) & 0xff;
1825
1826         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1827         uinfo->count = 2;
1828         uinfo->value.integer.min = 0;
1829         uinfo->value.integer.max = mask;
1830         return 0;
1831 }
1832
1833 int snd_cs4231_get_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1834 {
1835         cs4231_t *chip = snd_kcontrol_chip(kcontrol);
1836         unsigned long flags;
1837         int left_reg = kcontrol->private_value & 0xff;
1838         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1839         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1840         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1841         int mask = (kcontrol->private_value >> 24) & 0xff;
1842         int invert = (kcontrol->private_value >> 22) & 1;
1843         
1844         spin_lock_irqsave(&chip->reg_lock, flags);
1845         ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
1846         ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
1847         spin_unlock_irqrestore(&chip->reg_lock, flags);
1848         if (invert) {
1849                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1850                 ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1851         }
1852         return 0;
1853 }
1854
1855 int snd_cs4231_put_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1856 {
1857         cs4231_t *chip = snd_kcontrol_chip(kcontrol);
1858         unsigned long flags;
1859         int left_reg = kcontrol->private_value & 0xff;
1860         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1861         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1862         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1863         int mask = (kcontrol->private_value >> 24) & 0xff;
1864         int invert = (kcontrol->private_value >> 22) & 1;
1865         int change;
1866         unsigned short val1, val2;
1867         
1868         val1 = ucontrol->value.integer.value[0] & mask;
1869         val2 = ucontrol->value.integer.value[1] & mask;
1870         if (invert) {
1871                 val1 = mask - val1;
1872                 val2 = mask - val2;
1873         }
1874         val1 <<= shift_left;
1875         val2 <<= shift_right;
1876         spin_lock_irqsave(&chip->reg_lock, flags);
1877         val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1878         val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1879         change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
1880         snd_cs4231_out(chip, left_reg, val1);
1881         snd_cs4231_out(chip, right_reg, val2);
1882         spin_unlock_irqrestore(&chip->reg_lock, flags);
1883         return change;
1884 }
1885
1886 static snd_kcontrol_new_t snd_cs4231_controls[] = {
1887 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1888 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1889 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1890 CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1891 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1892 CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1893 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1894 CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1895 CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1896 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1897 CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1898 CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1899 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0, 15, 0),
1900 {
1901         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1902         .name = "Capture Source",
1903         .info = snd_cs4231_info_mux,
1904         .get = snd_cs4231_get_mux,
1905         .put = snd_cs4231_put_mux,
1906 },
1907 CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5, 1, 0),
1908 CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1909 CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1)
1910 };
1911                                         
1912 int snd_cs4231_mixer(cs4231_t *chip)
1913 {
1914         snd_card_t *card;
1915         unsigned int idx;
1916         int err;
1917
1918         snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1919
1920         card = chip->card;
1921
1922         strcpy(card->mixername, chip->pcm->name);
1923
1924         for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1925                 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4231_controls[idx], chip))) < 0)
1926                         return err;
1927         }
1928         return 0;
1929 }
1930
1931 EXPORT_SYMBOL(snd_cs4231_out);
1932 EXPORT_SYMBOL(snd_cs4231_in);
1933 EXPORT_SYMBOL(snd_cs4236_ext_out);
1934 EXPORT_SYMBOL(snd_cs4236_ext_in);
1935 EXPORT_SYMBOL(snd_cs4231_mce_up);
1936 EXPORT_SYMBOL(snd_cs4231_mce_down);
1937 EXPORT_SYMBOL(snd_cs4231_interrupt);
1938 EXPORT_SYMBOL(snd_cs4231_chip_id);
1939 EXPORT_SYMBOL(snd_cs4231_create);
1940 EXPORT_SYMBOL(snd_cs4231_pcm);
1941 EXPORT_SYMBOL(snd_cs4231_mixer);
1942 EXPORT_SYMBOL(snd_cs4231_timer);
1943 EXPORT_SYMBOL(snd_cs4231_info_single);
1944 EXPORT_SYMBOL(snd_cs4231_get_single);
1945 EXPORT_SYMBOL(snd_cs4231_put_single);
1946 EXPORT_SYMBOL(snd_cs4231_info_double);
1947 EXPORT_SYMBOL(snd_cs4231_get_double);
1948 EXPORT_SYMBOL(snd_cs4231_put_double);
1949
1950 /*
1951  *  INIT part
1952  */
1953
1954 static int __init alsa_cs4231_init(void)
1955 {
1956         return 0;
1957 }
1958
1959 static void __exit alsa_cs4231_exit(void)
1960 {
1961 }
1962
1963 module_init(alsa_cs4231_init)
1964 module_exit(alsa_cs4231_exit)