Add some basic .gitignore files
[linux-3.10.git] / sound / isa / ad1848 / ad1848_lib.c
1 /*
2  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
3  *  Routines for control of AD1848/AD1847/CS4248
4  *
5  *
6  *   This program is free software; you can redistribute it and/or modify
7  *   it under the terms of the GNU General Public License as published by
8  *   the Free Software Foundation; either version 2 of the License, or
9  *   (at your option) any later version.
10  *
11  *   This program is distributed in the hope that it will be useful,
12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *   GNU General Public License for more details.
15  *
16  *   You should have received a copy of the GNU General Public License
17  *   along with this program; if not, write to the Free Software
18  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
19  *
20  */
21
22 #define SNDRV_MAIN_OBJECT_FILE
23 #include <sound/driver.h>
24 #include <linux/delay.h>
25 #include <linux/init.h>
26 #include <linux/interrupt.h>
27 #include <linux/pm.h>
28 #include <linux/slab.h>
29 #include <linux/ioport.h>
30 #include <sound/core.h>
31 #include <sound/ad1848.h>
32 #include <sound/control.h>
33 #include <sound/pcm_params.h>
34
35 #include <asm/io.h>
36 #include <asm/dma.h>
37
38 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
39 MODULE_DESCRIPTION("Routines for control of AD1848/AD1847/CS4248");
40 MODULE_LICENSE("GPL");
41
42 #if 0
43 #define SNDRV_DEBUG_MCE
44 #endif
45
46 /*
47  *  Some variables
48  */
49
50 static unsigned char freq_bits[14] = {
51         /* 5510 */      0x00 | AD1848_XTAL2,
52         /* 6620 */      0x0E | AD1848_XTAL2,
53         /* 8000 */      0x00 | AD1848_XTAL1,
54         /* 9600 */      0x0E | AD1848_XTAL1,
55         /* 11025 */     0x02 | AD1848_XTAL2,
56         /* 16000 */     0x02 | AD1848_XTAL1,
57         /* 18900 */     0x04 | AD1848_XTAL2,
58         /* 22050 */     0x06 | AD1848_XTAL2,
59         /* 27042 */     0x04 | AD1848_XTAL1,
60         /* 32000 */     0x06 | AD1848_XTAL1,
61         /* 33075 */     0x0C | AD1848_XTAL2,
62         /* 37800 */     0x08 | AD1848_XTAL2,
63         /* 44100 */     0x0A | AD1848_XTAL2,
64         /* 48000 */     0x0C | AD1848_XTAL1
65 };
66
67 static unsigned int rates[14] = {
68         5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
69         27042, 32000, 33075, 37800, 44100, 48000
70 };
71
72 static snd_pcm_hw_constraint_list_t hw_constraints_rates = {
73         .count = 14,
74         .list = rates,
75         .mask = 0,
76 };
77
78 static unsigned char snd_ad1848_original_image[16] =
79 {
80         0x00,                   /* 00 - lic */
81         0x00,                   /* 01 - ric */
82         0x9f,                   /* 02 - la1ic */
83         0x9f,                   /* 03 - ra1ic */
84         0x9f,                   /* 04 - la2ic */
85         0x9f,                   /* 05 - ra2ic */
86         0xbf,                   /* 06 - loc */
87         0xbf,                   /* 07 - roc */
88         0x20,                   /* 08 - dfr */
89         AD1848_AUTOCALIB,       /* 09 - ic */
90         0x00,                   /* 0a - pc */
91         0x00,                   /* 0b - ti */
92         0x00,                   /* 0c - mi */
93         0x00,                   /* 0d - lbc */
94         0x00,                   /* 0e - dru */
95         0x00,                   /* 0f - drl */
96 };
97
98 /*
99  *  Basic I/O functions
100  */
101
102 void snd_ad1848_out(ad1848_t *chip,
103                            unsigned char reg,
104                            unsigned char value)
105 {
106         int timeout;
107
108         for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
109                 udelay(100);
110 #ifdef CONFIG_SND_DEBUG
111         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
112                 snd_printk("auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
113 #endif
114         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
115         outb(chip->image[reg] = value, AD1848P(chip, REG));
116         mb();
117 #if 0
118         printk("codec out - reg 0x%x = 0x%x\n", chip->mce_bit | reg, value);
119 #endif
120 }
121
122 static void snd_ad1848_dout(ad1848_t *chip,
123                             unsigned char reg, unsigned char value)
124 {
125         int timeout;
126
127         for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
128                 udelay(100);
129         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
130         outb(value, AD1848P(chip, REG));
131         mb();
132 }
133
134 static unsigned char snd_ad1848_in(ad1848_t *chip, unsigned char reg)
135 {
136         int timeout;
137
138         for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
139                 udelay(100);
140 #ifdef CONFIG_SND_DEBUG
141         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
142                 snd_printk("auto calibration time out - reg = 0x%x\n", reg);
143 #endif
144         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
145         mb();
146         return inb(AD1848P(chip, REG));
147 }
148
149 #if 0
150
151 static void snd_ad1848_debug(ad1848_t *chip)
152 {
153         printk("AD1848 REGS:      INDEX = 0x%02x  ", inb(AD1848P(chip, REGSEL)));
154         printk("                 STATUS = 0x%02x\n", inb(AD1848P(chip, STATUS)));
155         printk("  0x00: left input      = 0x%02x  ", snd_ad1848_in(chip, 0x00));
156         printk("  0x08: playback format = 0x%02x\n", snd_ad1848_in(chip, 0x08));
157         printk("  0x01: right input     = 0x%02x  ", snd_ad1848_in(chip, 0x01));
158         printk("  0x09: iface (CFIG 1)  = 0x%02x\n", snd_ad1848_in(chip, 0x09));
159         printk("  0x02: AUXA left       = 0x%02x  ", snd_ad1848_in(chip, 0x02));
160         printk("  0x0a: pin control     = 0x%02x\n", snd_ad1848_in(chip, 0x0a));
161         printk("  0x03: AUXA right      = 0x%02x  ", snd_ad1848_in(chip, 0x03));
162         printk("  0x0b: init & status   = 0x%02x\n", snd_ad1848_in(chip, 0x0b));
163         printk("  0x04: AUXB left       = 0x%02x  ", snd_ad1848_in(chip, 0x04));
164         printk("  0x0c: revision & mode = 0x%02x\n", snd_ad1848_in(chip, 0x0c));
165         printk("  0x05: AUXB right      = 0x%02x  ", snd_ad1848_in(chip, 0x05));
166         printk("  0x0d: loopback        = 0x%02x\n", snd_ad1848_in(chip, 0x0d));
167         printk("  0x06: left output     = 0x%02x  ", snd_ad1848_in(chip, 0x06));
168         printk("  0x0e: data upr count  = 0x%02x\n", snd_ad1848_in(chip, 0x0e));
169         printk("  0x07: right output    = 0x%02x  ", snd_ad1848_in(chip, 0x07));
170         printk("  0x0f: data lwr count  = 0x%02x\n", snd_ad1848_in(chip, 0x0f));
171 }
172
173 #endif
174
175 /*
176  *  AD1848 detection / MCE routines
177  */
178
179 static void snd_ad1848_mce_up(ad1848_t *chip)
180 {
181         unsigned long flags;
182         int timeout;
183
184         for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
185                 udelay(100);
186 #ifdef CONFIG_SND_DEBUG
187         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
188                 snd_printk("mce_up - auto calibration time out (0)\n");
189 #endif
190         spin_lock_irqsave(&chip->reg_lock, flags);
191         chip->mce_bit |= AD1848_MCE;
192         timeout = inb(AD1848P(chip, REGSEL));
193         if (timeout == 0x80)
194                 snd_printk("mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
195         if (!(timeout & AD1848_MCE))
196                 outb(chip->mce_bit | (timeout & 0x1f), AD1848P(chip, REGSEL));
197         spin_unlock_irqrestore(&chip->reg_lock, flags);
198 }
199
200 static void snd_ad1848_mce_down(ad1848_t *chip)
201 {
202         unsigned long flags;
203         int timeout;
204         signed long time;
205
206         spin_lock_irqsave(&chip->reg_lock, flags);
207         for (timeout = 5; timeout > 0; timeout--)
208                 inb(AD1848P(chip, REGSEL));
209         /* end of cleanup sequence */
210         for (timeout = 12000; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
211                 udelay(100);
212 #if 0
213         printk("(1) timeout = %i\n", timeout);
214 #endif
215 #ifdef CONFIG_SND_DEBUG
216         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
217                 snd_printk("mce_down [0x%lx] - auto calibration time out (0)\n", AD1848P(chip, REGSEL));
218 #endif
219         chip->mce_bit &= ~AD1848_MCE;
220         timeout = inb(AD1848P(chip, REGSEL));
221         outb(chip->mce_bit | (timeout & 0x1f), AD1848P(chip, REGSEL));
222         if (timeout == 0x80)
223                 snd_printk("mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
224         if ((timeout & AD1848_MCE) == 0) {
225                 spin_unlock_irqrestore(&chip->reg_lock, flags);
226                 return;
227         }
228         /* calibration process */
229
230         for (timeout = 500; timeout > 0 && (snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) == 0; timeout--);
231         if ((snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) == 0) {
232                 snd_printd("mce_down - auto calibration time out (1)\n");
233                 spin_unlock_irqrestore(&chip->reg_lock, flags);
234                 return;
235         }
236 #if 0
237         printk("(2) timeout = %i, jiffies = %li\n", timeout, jiffies);
238 #endif
239         time = HZ / 4;
240         while (snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) {
241                 spin_unlock_irqrestore(&chip->reg_lock, flags);
242                 if (time <= 0) {
243                         snd_printk("mce_down - auto calibration time out (2)\n");
244                         return;
245                 }
246                 set_current_state(TASK_INTERRUPTIBLE);
247                 time = schedule_timeout(time);
248                 spin_lock_irqsave(&chip->reg_lock, flags);
249         }
250 #if 0
251         printk("(3) jiffies = %li\n", jiffies);
252 #endif
253         time = HZ / 10;
254         while (inb(AD1848P(chip, REGSEL)) & AD1848_INIT) {
255                 spin_unlock_irqrestore(&chip->reg_lock, flags);
256                 if (time <= 0) {
257                         snd_printk("mce_down - auto calibration time out (3)\n");
258                         return;
259                 }
260                 set_current_state(TASK_INTERRUPTIBLE);
261                 time = schedule_timeout(time);
262                 spin_lock_irqsave(&chip->reg_lock, flags);
263         }
264         spin_unlock_irqrestore(&chip->reg_lock, flags);
265 #if 0
266         printk("(4) jiffies = %li\n", jiffies);
267         snd_printk("mce_down - exit = 0x%x\n", inb(AD1848P(chip, REGSEL)));
268 #endif
269 }
270
271 static unsigned int snd_ad1848_get_count(unsigned char format,
272                                          unsigned int size)
273 {
274         switch (format & 0xe0) {
275         case AD1848_LINEAR_16:
276                 size >>= 1;
277                 break;
278         }
279         if (format & AD1848_STEREO)
280                 size >>= 1;
281         return size;
282 }
283
284 static int snd_ad1848_trigger(ad1848_t *chip, unsigned char what,
285                               int channel, int cmd)
286 {
287         int result = 0;
288
289 #if 0
290         printk("codec trigger!!! - what = %i, enable = %i, status = 0x%x\n", what, enable, inb(AD1848P(card, STATUS)));
291 #endif
292         spin_lock(&chip->reg_lock);
293         if (cmd == SNDRV_PCM_TRIGGER_START) {
294                 if (chip->image[AD1848_IFACE_CTRL] & what) {
295                         spin_unlock(&chip->reg_lock);
296                         return 0;
297                 }
298                 snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] |= what);
299                 chip->mode |= AD1848_MODE_RUNNING;
300         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
301                 if (!(chip->image[AD1848_IFACE_CTRL] & what)) {
302                         spin_unlock(&chip->reg_lock);
303                         return 0;
304                 }
305                 snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] &= ~what);
306                 chip->mode &= ~AD1848_MODE_RUNNING;
307         } else {
308                 result = -EINVAL;
309         }
310         spin_unlock(&chip->reg_lock);
311         return result;
312 }
313
314 /*
315  *  CODEC I/O
316  */
317
318 static unsigned char snd_ad1848_get_rate(unsigned int rate)
319 {
320         int i;
321
322         for (i = 0; i < 14; i++)
323                 if (rate == rates[i])
324                         return freq_bits[i];
325         snd_BUG();
326         return freq_bits[13];
327 }
328
329 static int snd_ad1848_ioctl(snd_pcm_substream_t * substream,
330                             unsigned int cmd, void *arg)
331 {
332         return snd_pcm_lib_ioctl(substream, cmd, arg);
333 }
334
335 static unsigned char snd_ad1848_get_format(int format, int channels)
336 {
337         unsigned char rformat;
338
339         rformat = AD1848_LINEAR_8;
340         switch (format) {
341         case SNDRV_PCM_FORMAT_A_LAW:    rformat = AD1848_ALAW_8; break;
342         case SNDRV_PCM_FORMAT_MU_LAW:   rformat = AD1848_ULAW_8; break;
343         case SNDRV_PCM_FORMAT_S16_LE:   rformat = AD1848_LINEAR_16; break;
344         }
345         if (channels > 1)
346                 rformat |= AD1848_STEREO;
347 #if 0
348         snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
349 #endif
350         return rformat;
351 }
352
353 static void snd_ad1848_calibrate_mute(ad1848_t *chip, int mute)
354 {
355         unsigned long flags;
356         
357         mute = mute ? 1 : 0;
358         spin_lock_irqsave(&chip->reg_lock, flags);
359         if (chip->calibrate_mute == mute) {
360                 spin_unlock_irqrestore(&chip->reg_lock, flags);
361                 return;
362         }
363         if (!mute) {
364                 snd_ad1848_dout(chip, AD1848_LEFT_INPUT, chip->image[AD1848_LEFT_INPUT]);
365                 snd_ad1848_dout(chip, AD1848_RIGHT_INPUT, chip->image[AD1848_RIGHT_INPUT]);
366         }
367         snd_ad1848_dout(chip, AD1848_AUX1_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_LEFT_INPUT]);
368         snd_ad1848_dout(chip, AD1848_AUX1_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_RIGHT_INPUT]);
369         snd_ad1848_dout(chip, AD1848_AUX2_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_LEFT_INPUT]);
370         snd_ad1848_dout(chip, AD1848_AUX2_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_RIGHT_INPUT]);
371         snd_ad1848_dout(chip, AD1848_LEFT_OUTPUT, mute ? 0x80 : chip->image[AD1848_LEFT_OUTPUT]);
372         snd_ad1848_dout(chip, AD1848_RIGHT_OUTPUT, mute ? 0x80 : chip->image[AD1848_RIGHT_OUTPUT]);
373         chip->calibrate_mute = mute;
374         spin_unlock_irqrestore(&chip->reg_lock, flags);
375 }
376
377 static void snd_ad1848_set_data_format(ad1848_t *chip, snd_pcm_hw_params_t *hw_params)
378 {
379         if (hw_params == NULL) {
380                 chip->image[AD1848_DATA_FORMAT] = 0x20;
381         } else {
382                 chip->image[AD1848_DATA_FORMAT] =
383                     snd_ad1848_get_format(params_format(hw_params), params_channels(hw_params)) |
384                     snd_ad1848_get_rate(params_rate(hw_params));
385         }
386         // snd_printk(">>> pmode = 0x%x, dfr = 0x%x\n", pstr->mode, chip->image[AD1848_DATA_FORMAT]);
387 }
388
389 static int snd_ad1848_open(ad1848_t *chip, unsigned int mode)
390 {
391         unsigned long flags;
392
393         down(&chip->open_mutex);
394         if (chip->mode & AD1848_MODE_OPEN) {
395                 up(&chip->open_mutex);
396                 return -EAGAIN;
397         }
398         snd_ad1848_mce_down(chip);
399
400 #ifdef SNDRV_DEBUG_MCE
401         snd_printk("open: (1)\n");
402 #endif
403         snd_ad1848_mce_up(chip);
404         spin_lock_irqsave(&chip->reg_lock, flags);
405         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
406                              AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO |
407                              AD1848_CALIB_MODE);
408         chip->image[AD1848_IFACE_CTRL] |= AD1848_AUTOCALIB;
409         snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
410         spin_unlock_irqrestore(&chip->reg_lock, flags);
411         snd_ad1848_mce_down(chip);
412
413 #ifdef SNDRV_DEBUG_MCE
414         snd_printk("open: (2)\n");
415 #endif
416
417         snd_ad1848_set_data_format(chip, NULL);
418
419         snd_ad1848_mce_up(chip);
420         spin_lock_irqsave(&chip->reg_lock, flags);
421         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
422         spin_unlock_irqrestore(&chip->reg_lock, flags);
423         snd_ad1848_mce_down(chip);
424
425 #ifdef SNDRV_DEBUG_MCE
426         snd_printk("open: (3)\n");
427 #endif
428
429         /* ok. now enable and ack CODEC IRQ */
430         spin_lock_irqsave(&chip->reg_lock, flags);
431         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
432         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
433         chip->image[AD1848_PIN_CTRL] |= AD1848_IRQ_ENABLE;
434         snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
435         spin_unlock_irqrestore(&chip->reg_lock, flags);
436
437         chip->mode = mode;
438         up(&chip->open_mutex);
439
440         return 0;
441 }
442
443 static void snd_ad1848_close(ad1848_t *chip)
444 {
445         unsigned long flags;
446
447         down(&chip->open_mutex);
448         if (!chip->mode) {
449                 up(&chip->open_mutex);
450                 return;
451         }
452         /* disable IRQ */
453         spin_lock_irqsave(&chip->reg_lock, flags);
454         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
455         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
456         chip->image[AD1848_PIN_CTRL] &= ~AD1848_IRQ_ENABLE;
457         snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
458         spin_unlock_irqrestore(&chip->reg_lock, flags);
459
460         /* now disable capture & playback */
461
462         snd_ad1848_mce_up(chip);
463         spin_lock_irqsave(&chip->reg_lock, flags);
464         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
465                              AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
466         snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
467         spin_unlock_irqrestore(&chip->reg_lock, flags);
468         snd_ad1848_mce_down(chip);
469
470         /* clear IRQ again */
471         spin_lock_irqsave(&chip->reg_lock, flags);
472         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
473         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
474         spin_unlock_irqrestore(&chip->reg_lock, flags);
475
476         chip->mode = 0;
477         up(&chip->open_mutex);
478 }
479
480 /*
481  *  ok.. exported functions..
482  */
483
484 static int snd_ad1848_playback_trigger(snd_pcm_substream_t * substream,
485                                        int cmd)
486 {
487         ad1848_t *chip = snd_pcm_substream_chip(substream);
488         return snd_ad1848_trigger(chip, AD1848_PLAYBACK_ENABLE, SNDRV_PCM_STREAM_PLAYBACK, cmd);
489 }
490
491 static int snd_ad1848_capture_trigger(snd_pcm_substream_t * substream,
492                                       int cmd)
493 {
494         ad1848_t *chip = snd_pcm_substream_chip(substream);
495         return snd_ad1848_trigger(chip, AD1848_CAPTURE_ENABLE, SNDRV_PCM_STREAM_CAPTURE, cmd);
496 }
497
498 static int snd_ad1848_playback_hw_params(snd_pcm_substream_t * substream,
499                                          snd_pcm_hw_params_t * hw_params)
500 {
501         ad1848_t *chip = snd_pcm_substream_chip(substream);
502         unsigned long flags;
503         int err;
504
505         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
506                 return err;
507         snd_ad1848_calibrate_mute(chip, 1);
508         snd_ad1848_set_data_format(chip, hw_params);
509         snd_ad1848_mce_up(chip);
510         spin_lock_irqsave(&chip->reg_lock, flags);
511         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
512         spin_unlock_irqrestore(&chip->reg_lock, flags);
513         snd_ad1848_mce_down(chip);
514         snd_ad1848_calibrate_mute(chip, 0);
515         return 0;
516 }
517
518 static int snd_ad1848_playback_hw_free(snd_pcm_substream_t * substream)
519 {
520         return snd_pcm_lib_free_pages(substream);
521 }
522
523 static int snd_ad1848_playback_prepare(snd_pcm_substream_t * substream)
524 {
525         ad1848_t *chip = snd_pcm_substream_chip(substream);
526         snd_pcm_runtime_t *runtime = substream->runtime;
527         unsigned long flags;
528         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
529         unsigned int count = snd_pcm_lib_period_bytes(substream);
530
531         chip->dma_size = size;
532         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO);
533         snd_dma_program(chip->dma, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
534         count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
535         spin_lock_irqsave(&chip->reg_lock, flags);
536         snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
537         snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
538         spin_unlock_irqrestore(&chip->reg_lock, flags);
539         return 0;
540 }
541
542 static int snd_ad1848_capture_hw_params(snd_pcm_substream_t * substream,
543                                         snd_pcm_hw_params_t * hw_params)
544 {
545         ad1848_t *chip = snd_pcm_substream_chip(substream);
546         unsigned long flags;
547         int err;
548
549         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
550                 return err;
551         snd_ad1848_calibrate_mute(chip, 1);
552         snd_ad1848_set_data_format(chip, hw_params);
553         snd_ad1848_mce_up(chip);
554         spin_lock_irqsave(&chip->reg_lock, flags);
555         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
556         spin_unlock_irqrestore(&chip->reg_lock, flags);
557         snd_ad1848_mce_down(chip);
558         snd_ad1848_calibrate_mute(chip, 0);
559         return 0;
560 }
561
562 static int snd_ad1848_capture_hw_free(snd_pcm_substream_t * substream)
563 {
564         return snd_pcm_lib_free_pages(substream);
565 }
566
567 static int snd_ad1848_capture_prepare(snd_pcm_substream_t * substream)
568 {
569         ad1848_t *chip = snd_pcm_substream_chip(substream);
570         snd_pcm_runtime_t *runtime = substream->runtime;
571         unsigned long flags;
572         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
573         unsigned int count = snd_pcm_lib_period_bytes(substream);
574
575         chip->dma_size = size;
576         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
577         snd_dma_program(chip->dma, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
578         count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
579         spin_lock_irqsave(&chip->reg_lock, flags);
580         snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
581         snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
582         spin_unlock_irqrestore(&chip->reg_lock, flags);
583         return 0;
584 }
585
586 static irqreturn_t snd_ad1848_interrupt(int irq, void *dev_id, struct pt_regs *regs)
587 {
588         ad1848_t *chip = dev_id;
589
590         if ((chip->mode & AD1848_MODE_PLAY) && chip->playback_substream &&
591             (chip->mode & AD1848_MODE_RUNNING))
592                 snd_pcm_period_elapsed(chip->playback_substream);
593         if ((chip->mode & AD1848_MODE_CAPTURE) && chip->capture_substream &&
594             (chip->mode & AD1848_MODE_RUNNING))
595                 snd_pcm_period_elapsed(chip->capture_substream);
596         outb(0, AD1848P(chip, STATUS)); /* clear global interrupt bit */
597         return IRQ_HANDLED;
598 }
599
600 static snd_pcm_uframes_t snd_ad1848_playback_pointer(snd_pcm_substream_t * substream)
601 {
602         ad1848_t *chip = snd_pcm_substream_chip(substream);
603         size_t ptr;
604         
605         if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_PLAYBACK_ENABLE))
606                 return 0;
607         ptr = snd_dma_pointer(chip->dma, chip->dma_size);
608         return bytes_to_frames(substream->runtime, ptr);
609 }
610
611 static snd_pcm_uframes_t snd_ad1848_capture_pointer(snd_pcm_substream_t * substream)
612 {
613         ad1848_t *chip = snd_pcm_substream_chip(substream);
614         size_t ptr;
615
616         if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_CAPTURE_ENABLE))
617                 return 0;
618         ptr = snd_dma_pointer(chip->dma, chip->dma_size);
619         return bytes_to_frames(substream->runtime, ptr);
620 }
621
622 /*
623
624  */
625
626 static void snd_ad1848_thinkpad_twiddle(ad1848_t *chip, int on) {
627
628         int tmp;
629
630         if (!chip->thinkpad_flag) return;
631
632         outb(0x1c, AD1848_THINKPAD_CTL_PORT1);
633         tmp = inb(AD1848_THINKPAD_CTL_PORT2);
634
635         if (on)
636                 /* turn it on */
637                 tmp |= AD1848_THINKPAD_CS4248_ENABLE_BIT;
638         else
639                 /* turn it off */
640                 tmp &= ~AD1848_THINKPAD_CS4248_ENABLE_BIT;
641         
642         outb(tmp, AD1848_THINKPAD_CTL_PORT2);
643
644 }
645
646 #ifdef CONFIG_PM
647 static int snd_ad1848_suspend(snd_card_t *card, pm_message_t state)
648 {
649         ad1848_t *chip = card->pm_private_data;
650
651         snd_pcm_suspend_all(chip->pcm);
652         /* FIXME: save registers? */
653
654         if (chip->thinkpad_flag)
655                 snd_ad1848_thinkpad_twiddle(chip, 0);
656
657         return 0;
658 }
659
660 static int snd_ad1848_resume(snd_card_t *card)
661 {
662         ad1848_t *chip = card->pm_private_data;
663
664         if (chip->thinkpad_flag)
665                 snd_ad1848_thinkpad_twiddle(chip, 1);
666
667         /* FIXME: restore registers? */
668
669         return 0;
670 }
671 #endif /* CONFIG_PM */
672
673 static int snd_ad1848_probe(ad1848_t * chip)
674 {
675         unsigned long flags;
676         int i, id, rev, ad1847;
677         unsigned char *ptr;
678
679 #if 0
680         snd_ad1848_debug(chip);
681 #endif
682         id = ad1847 = 0;
683         for (i = 0; i < 1000; i++) {
684                 mb();
685                 if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
686                         udelay(500);
687                 else {
688                         spin_lock_irqsave(&chip->reg_lock, flags);
689                         snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
690                         snd_ad1848_out(chip, AD1848_LEFT_INPUT, 0xaa);
691                         snd_ad1848_out(chip, AD1848_RIGHT_INPUT, 0x45);
692                         rev = snd_ad1848_in(chip, AD1848_RIGHT_INPUT);
693                         if (rev == 0x65) {
694                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
695                                 id = 1;
696                                 ad1847 = 1;
697                                 break;
698                         }
699                         if (snd_ad1848_in(chip, AD1848_LEFT_INPUT) == 0xaa && rev == 0x45) {
700                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
701                                 id = 1;
702                                 break;
703                         }
704                         spin_unlock_irqrestore(&chip->reg_lock, flags);
705                 }
706         }
707         if (id != 1)
708                 return -ENODEV; /* no valid device found */
709         if (chip->hardware == AD1848_HW_DETECT) {
710                 if (ad1847) {
711                         chip->hardware = AD1848_HW_AD1847;
712                 } else {
713                         chip->hardware = AD1848_HW_AD1848;
714                         rev = snd_ad1848_in(chip, AD1848_MISC_INFO);
715                         if (rev & 0x80) {
716                                 chip->hardware = AD1848_HW_CS4248;
717                         } else if ((rev & 0x0f) == 0x0a) {
718                                 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x40);
719                                 for (i = 0; i < 16; ++i) {
720                                         if (snd_ad1848_in(chip, i) != snd_ad1848_in(chip, i + 16)) {
721                                                 chip->hardware = AD1848_HW_CMI8330;
722                                                 break;
723                                         }
724                                 }
725                                 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
726                         }
727                 }
728         }
729         spin_lock_irqsave(&chip->reg_lock, flags);
730         inb(AD1848P(chip, STATUS));     /* clear any pendings IRQ */
731         outb(0, AD1848P(chip, STATUS));
732         mb();
733         spin_unlock_irqrestore(&chip->reg_lock, flags);
734
735         chip->image[AD1848_MISC_INFO] = 0x00;
736         chip->image[AD1848_IFACE_CTRL] =
737             (chip->image[AD1848_IFACE_CTRL] & ~AD1848_SINGLE_DMA) | AD1848_SINGLE_DMA;
738         ptr = (unsigned char *) &chip->image;
739         snd_ad1848_mce_down(chip);
740         spin_lock_irqsave(&chip->reg_lock, flags);
741         for (i = 0; i < 16; i++)        /* ok.. fill all AD1848 registers */
742                 snd_ad1848_out(chip, i, *ptr++);
743         spin_unlock_irqrestore(&chip->reg_lock, flags);
744         snd_ad1848_mce_up(chip);
745         snd_ad1848_mce_down(chip);
746         return 0;               /* all things are ok.. */
747 }
748
749 /*
750
751  */
752
753 static snd_pcm_hardware_t snd_ad1848_playback =
754 {
755         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
756                                  SNDRV_PCM_INFO_MMAP_VALID),
757         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
758                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
759         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
760         .rate_min =             5510,
761         .rate_max =             48000,
762         .channels_min =         1,
763         .channels_max =         2,
764         .buffer_bytes_max =     (128*1024),
765         .period_bytes_min =     64,
766         .period_bytes_max =     (128*1024),
767         .periods_min =          1,
768         .periods_max =          1024,
769         .fifo_size =            0,
770 };
771
772 static snd_pcm_hardware_t snd_ad1848_capture =
773 {
774         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
775                                  SNDRV_PCM_INFO_MMAP_VALID),
776         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
777                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
778         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
779         .rate_min =             5510,
780         .rate_max =             48000,
781         .channels_min =         1,
782         .channels_max =         2,
783         .buffer_bytes_max =     (128*1024),
784         .period_bytes_min =     64,
785         .period_bytes_max =     (128*1024),
786         .periods_min =          1,
787         .periods_max =          1024,
788         .fifo_size =            0,
789 };
790
791 /*
792
793  */
794
795 static int snd_ad1848_playback_open(snd_pcm_substream_t * substream)
796 {
797         ad1848_t *chip = snd_pcm_substream_chip(substream);
798         snd_pcm_runtime_t *runtime = substream->runtime;
799         int err;
800
801         if ((err = snd_ad1848_open(chip, AD1848_MODE_PLAY)) < 0)
802                 return err;
803         chip->playback_substream = substream;
804         runtime->hw = snd_ad1848_playback;
805         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
806         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
807         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
808         return 0;
809 }
810
811 static int snd_ad1848_capture_open(snd_pcm_substream_t * substream)
812 {
813         ad1848_t *chip = snd_pcm_substream_chip(substream);
814         snd_pcm_runtime_t *runtime = substream->runtime;
815         int err;
816
817         if ((err = snd_ad1848_open(chip, AD1848_MODE_CAPTURE)) < 0)
818                 return err;
819         chip->capture_substream = substream;
820         runtime->hw = snd_ad1848_capture;
821         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
822         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
823         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
824         return 0;
825 }
826
827 static int snd_ad1848_playback_close(snd_pcm_substream_t * substream)
828 {
829         ad1848_t *chip = snd_pcm_substream_chip(substream);
830
831         chip->mode &= ~AD1848_MODE_PLAY;
832         chip->playback_substream = NULL;
833         snd_ad1848_close(chip);
834         return 0;
835 }
836
837 static int snd_ad1848_capture_close(snd_pcm_substream_t * substream)
838 {
839         ad1848_t *chip = snd_pcm_substream_chip(substream);
840
841         chip->mode &= ~AD1848_MODE_CAPTURE;
842         chip->capture_substream = NULL;
843         snd_ad1848_close(chip);
844         return 0;
845 }
846
847 static int snd_ad1848_free(ad1848_t *chip)
848 {
849         if (chip->res_port) {
850                 release_resource(chip->res_port);
851                 kfree_nocheck(chip->res_port);
852         }
853         if (chip->irq >= 0)
854                 free_irq(chip->irq, (void *) chip);
855         if (chip->dma >= 0) {
856                 snd_dma_disable(chip->dma);
857                 free_dma(chip->dma);
858         }
859         kfree(chip);
860         return 0;
861 }
862
863 static int snd_ad1848_dev_free(snd_device_t *device)
864 {
865         ad1848_t *chip = device->device_data;
866         return snd_ad1848_free(chip);
867 }
868
869 static const char *snd_ad1848_chip_id(ad1848_t *chip)
870 {
871         switch (chip->hardware) {
872         case AD1848_HW_AD1847:  return "AD1847";
873         case AD1848_HW_AD1848:  return "AD1848";
874         case AD1848_HW_CS4248:  return "CS4248";
875         case AD1848_HW_CMI8330: return "CMI8330/C3D";
876         default:                return "???";
877         }
878 }
879
880 int snd_ad1848_create(snd_card_t * card,
881                       unsigned long port,
882                       int irq, int dma,
883                       unsigned short hardware,
884                       ad1848_t ** rchip)
885 {
886         static snd_device_ops_t ops = {
887                 .dev_free =     snd_ad1848_dev_free,
888         };
889         ad1848_t *chip;
890         int err;
891
892         *rchip = NULL;
893         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
894         if (chip == NULL)
895                 return -ENOMEM;
896         spin_lock_init(&chip->reg_lock);
897         init_MUTEX(&chip->open_mutex);
898         chip->card = card;
899         chip->port = port;
900         chip->irq = -1;
901         chip->dma = -1;
902         chip->hardware = hardware;
903         memcpy(&chip->image, &snd_ad1848_original_image, sizeof(snd_ad1848_original_image));
904         
905         if ((chip->res_port = request_region(port, 4, "AD1848")) == NULL) {
906                 snd_printk(KERN_ERR "ad1848: can't grab port 0x%lx\n", port);
907                 snd_ad1848_free(chip);
908                 return -EBUSY;
909         }
910         if (request_irq(irq, snd_ad1848_interrupt, SA_INTERRUPT, "AD1848", (void *) chip)) {
911                 snd_printk(KERN_ERR "ad1848: can't grab IRQ %d\n", irq);
912                 snd_ad1848_free(chip);
913                 return -EBUSY;
914         }
915         chip->irq = irq;
916         if (request_dma(dma, "AD1848")) {
917                 snd_printk(KERN_ERR "ad1848: can't grab DMA %d\n", dma);
918                 snd_ad1848_free(chip);
919                 return -EBUSY;
920         }
921         chip->dma = dma;
922
923         if (hardware == AD1848_HW_THINKPAD) {
924                 chip->thinkpad_flag = 1;
925                 chip->hardware = AD1848_HW_DETECT; /* reset */
926                 snd_ad1848_thinkpad_twiddle(chip, 1);
927                 snd_card_set_isa_pm_callback(card, snd_ad1848_suspend, snd_ad1848_resume, chip);
928         }
929
930         if (snd_ad1848_probe(chip) < 0) {
931                 snd_ad1848_free(chip);
932                 return -ENODEV;
933         }
934
935         /* Register device */
936         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
937                 snd_ad1848_free(chip);
938                 return err;
939         }
940
941         *rchip = chip;
942         return 0;
943 }
944
945 static snd_pcm_ops_t snd_ad1848_playback_ops = {
946         .open =         snd_ad1848_playback_open,
947         .close =        snd_ad1848_playback_close,
948         .ioctl =        snd_ad1848_ioctl,
949         .hw_params =    snd_ad1848_playback_hw_params,
950         .hw_free =      snd_ad1848_playback_hw_free,
951         .prepare =      snd_ad1848_playback_prepare,
952         .trigger =      snd_ad1848_playback_trigger,
953         .pointer =      snd_ad1848_playback_pointer,
954 };
955
956 static snd_pcm_ops_t snd_ad1848_capture_ops = {
957         .open =         snd_ad1848_capture_open,
958         .close =        snd_ad1848_capture_close,
959         .ioctl =        snd_ad1848_ioctl,
960         .hw_params =    snd_ad1848_capture_hw_params,
961         .hw_free =      snd_ad1848_capture_hw_free,
962         .prepare =      snd_ad1848_capture_prepare,
963         .trigger =      snd_ad1848_capture_trigger,
964         .pointer =      snd_ad1848_capture_pointer,
965 };
966
967 static void snd_ad1848_pcm_free(snd_pcm_t *pcm)
968 {
969         ad1848_t *chip = pcm->private_data;
970         chip->pcm = NULL;
971         snd_pcm_lib_preallocate_free_for_all(pcm);
972 }
973
974 int snd_ad1848_pcm(ad1848_t *chip, int device, snd_pcm_t **rpcm)
975 {
976         snd_pcm_t *pcm;
977         int err;
978
979         if ((err = snd_pcm_new(chip->card, "AD1848", device, 1, 1, &pcm)) < 0)
980                 return err;
981
982         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ad1848_playback_ops);
983         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ad1848_capture_ops);
984
985         pcm->private_free = snd_ad1848_pcm_free;
986         pcm->private_data = chip;
987         pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
988         strcpy(pcm->name, snd_ad1848_chip_id(chip));
989
990         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
991                                               snd_dma_isa_data(),
992                                               64*1024, chip->dma > 3 ? 128*1024 : 64*1024);
993
994         chip->pcm = pcm;
995         if (rpcm)
996                 *rpcm = pcm;
997         return 0;
998 }
999
1000 const snd_pcm_ops_t *snd_ad1848_get_pcm_ops(int direction)
1001 {
1002         return direction == SNDRV_PCM_STREAM_PLAYBACK ?
1003                 &snd_ad1848_playback_ops : &snd_ad1848_capture_ops;
1004 }
1005
1006 /*
1007  *  MIXER part
1008  */
1009
1010 static int snd_ad1848_info_mux(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1011 {
1012         static char *texts[4] = {
1013                 "Line", "Aux", "Mic", "Mix"
1014         };
1015
1016         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1017         uinfo->count = 2;
1018         uinfo->value.enumerated.items = 4;
1019         if (uinfo->value.enumerated.item > 3)
1020                 uinfo->value.enumerated.item = 3;
1021         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1022         return 0;
1023 }
1024
1025 static int snd_ad1848_get_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1026 {
1027         ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1028         unsigned long flags;
1029         
1030         spin_lock_irqsave(&chip->reg_lock, flags);
1031         ucontrol->value.enumerated.item[0] = (chip->image[AD1848_LEFT_INPUT] & AD1848_MIXS_ALL) >> 6;
1032         ucontrol->value.enumerated.item[1] = (chip->image[AD1848_RIGHT_INPUT] & AD1848_MIXS_ALL) >> 6;
1033         spin_unlock_irqrestore(&chip->reg_lock, flags);
1034         return 0;
1035 }
1036
1037 static int snd_ad1848_put_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1038 {
1039         ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1040         unsigned long flags;
1041         unsigned short left, right;
1042         int change;
1043         
1044         if (ucontrol->value.enumerated.item[0] > 3 ||
1045             ucontrol->value.enumerated.item[1] > 3)
1046                 return -EINVAL;
1047         left = ucontrol->value.enumerated.item[0] << 6;
1048         right = ucontrol->value.enumerated.item[1] << 6;
1049         spin_lock_irqsave(&chip->reg_lock, flags);
1050         left = (chip->image[AD1848_LEFT_INPUT] & ~AD1848_MIXS_ALL) | left;
1051         right = (chip->image[AD1848_RIGHT_INPUT] & ~AD1848_MIXS_ALL) | right;
1052         change = left != chip->image[AD1848_LEFT_INPUT] ||
1053                  right != chip->image[AD1848_RIGHT_INPUT];
1054         snd_ad1848_out(chip, AD1848_LEFT_INPUT, left);
1055         snd_ad1848_out(chip, AD1848_RIGHT_INPUT, right);
1056         spin_unlock_irqrestore(&chip->reg_lock, flags);
1057         return change;
1058 }
1059
1060 static int snd_ad1848_info_single(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1061 {
1062         int mask = (kcontrol->private_value >> 16) & 0xff;
1063
1064         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1065         uinfo->count = 1;
1066         uinfo->value.integer.min = 0;
1067         uinfo->value.integer.max = mask;
1068         return 0;
1069 }
1070
1071 static int snd_ad1848_get_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1072 {
1073         ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1074         unsigned long flags;
1075         int reg = kcontrol->private_value & 0xff;
1076         int shift = (kcontrol->private_value >> 8) & 0xff;
1077         int mask = (kcontrol->private_value >> 16) & 0xff;
1078         int invert = (kcontrol->private_value >> 24) & 0xff;
1079         
1080         spin_lock_irqsave(&chip->reg_lock, flags);
1081         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1082         spin_unlock_irqrestore(&chip->reg_lock, flags);
1083         if (invert)
1084                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1085         return 0;
1086 }
1087
1088 static int snd_ad1848_put_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1089 {
1090         ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1091         unsigned long flags;
1092         int reg = kcontrol->private_value & 0xff;
1093         int shift = (kcontrol->private_value >> 8) & 0xff;
1094         int mask = (kcontrol->private_value >> 16) & 0xff;
1095         int invert = (kcontrol->private_value >> 24) & 0xff;
1096         int change;
1097         unsigned short val;
1098         
1099         val = (ucontrol->value.integer.value[0] & mask);
1100         if (invert)
1101                 val = mask - val;
1102         val <<= shift;
1103         spin_lock_irqsave(&chip->reg_lock, flags);
1104         val = (chip->image[reg] & ~(mask << shift)) | val;
1105         change = val != chip->image[reg];
1106         snd_ad1848_out(chip, reg, val);
1107         spin_unlock_irqrestore(&chip->reg_lock, flags);
1108         return change;
1109 }
1110
1111 static int snd_ad1848_info_double(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1112 {
1113         int mask = (kcontrol->private_value >> 24) & 0xff;
1114
1115         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1116         uinfo->count = 2;
1117         uinfo->value.integer.min = 0;
1118         uinfo->value.integer.max = mask;
1119         return 0;
1120 }
1121
1122 static int snd_ad1848_get_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1123 {
1124         ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1125         unsigned long flags;
1126         int left_reg = kcontrol->private_value & 0xff;
1127         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1128         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1129         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1130         int mask = (kcontrol->private_value >> 24) & 0xff;
1131         int invert = (kcontrol->private_value >> 22) & 1;
1132         
1133         spin_lock_irqsave(&chip->reg_lock, flags);
1134         ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
1135         ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
1136         spin_unlock_irqrestore(&chip->reg_lock, flags);
1137         if (invert) {
1138                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1139                 ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1140         }
1141         return 0;
1142 }
1143
1144 static int snd_ad1848_put_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1145 {
1146         ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1147         unsigned long flags;
1148         int left_reg = kcontrol->private_value & 0xff;
1149         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1150         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1151         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1152         int mask = (kcontrol->private_value >> 24) & 0xff;
1153         int invert = (kcontrol->private_value >> 22) & 1;
1154         int change;
1155         unsigned short val1, val2;
1156         
1157         val1 = ucontrol->value.integer.value[0] & mask;
1158         val2 = ucontrol->value.integer.value[1] & mask;
1159         if (invert) {
1160                 val1 = mask - val1;
1161                 val2 = mask - val2;
1162         }
1163         val1 <<= shift_left;
1164         val2 <<= shift_right;
1165         spin_lock_irqsave(&chip->reg_lock, flags);
1166         if (left_reg != right_reg) {
1167                 val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1168                 val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1169                 change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
1170                 snd_ad1848_out(chip, left_reg, val1);
1171                 snd_ad1848_out(chip, right_reg, val2);
1172         } else {
1173                 val1 = (chip->image[left_reg] & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
1174                 change = val1 != chip->image[left_reg];
1175                 snd_ad1848_out(chip, left_reg, val1);           
1176         }
1177         spin_unlock_irqrestore(&chip->reg_lock, flags);
1178         return change;
1179 }
1180
1181 /*
1182  */
1183 int snd_ad1848_add_ctl(ad1848_t *chip, const char *name, int index, int type, unsigned long value)
1184 {
1185         static snd_kcontrol_new_t newctls[] = {
1186                 [AD1848_MIX_SINGLE] = {
1187                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1188                         .info = snd_ad1848_info_single,
1189                         .get = snd_ad1848_get_single,
1190                         .put = snd_ad1848_put_single,
1191                 },
1192                 [AD1848_MIX_DOUBLE] = {
1193                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1194                         .info = snd_ad1848_info_double,
1195                         .get = snd_ad1848_get_double,
1196                         .put = snd_ad1848_put_double,
1197                 },
1198                 [AD1848_MIX_CAPTURE] = {
1199                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1200                         .info = snd_ad1848_info_mux,
1201                         .get = snd_ad1848_get_mux,
1202                         .put = snd_ad1848_put_mux,
1203                 },
1204         };
1205         snd_kcontrol_t *ctl;
1206         int err;
1207
1208         ctl = snd_ctl_new1(&newctls[type], chip);
1209         if (! ctl)
1210                 return -ENOMEM;
1211         strlcpy(ctl->id.name, name, sizeof(ctl->id.name));
1212         ctl->id.index = index;
1213         ctl->private_value = value;
1214         if ((err = snd_ctl_add(chip->card, ctl)) < 0) {
1215                 snd_ctl_free_one(ctl);
1216                 return err;
1217         }
1218         return 0;
1219 }
1220
1221
1222 static struct ad1848_mix_elem snd_ad1848_controls[] = {
1223 AD1848_DOUBLE("PCM Playback Switch", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 7, 7, 1, 1),
1224 AD1848_DOUBLE("PCM Playback Volume", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 0, 0, 63, 1),
1225 AD1848_DOUBLE("Aux Playback Switch", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1226 AD1848_DOUBLE("Aux Playback Volume", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1227 AD1848_DOUBLE("Aux Playback Switch", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1228 AD1848_DOUBLE("Aux Playback Volume", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1229 AD1848_DOUBLE("Capture Volume", 0, AD1848_LEFT_INPUT, AD1848_RIGHT_INPUT, 0, 0, 15, 0),
1230 {
1231         .name = "Capture Source",
1232         .type = AD1848_MIX_CAPTURE,
1233 },
1234 AD1848_SINGLE("Loopback Capture Switch", 0, AD1848_LOOPBACK, 0, 1, 0),
1235 AD1848_SINGLE("Loopback Capture Volume", 0, AD1848_LOOPBACK, 1, 63, 0)
1236 };
1237                                         
1238 int snd_ad1848_mixer(ad1848_t *chip)
1239 {
1240         snd_card_t *card;
1241         snd_pcm_t *pcm;
1242         unsigned int idx;
1243         int err;
1244
1245         snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1246
1247         pcm = chip->pcm;
1248         card = chip->card;
1249
1250         strcpy(card->mixername, pcm->name);
1251
1252         for (idx = 0; idx < ARRAY_SIZE(snd_ad1848_controls); idx++)
1253                 if ((err = snd_ad1848_add_ctl_elem(chip, &snd_ad1848_controls[idx])) < 0)
1254                         return err;
1255
1256         return 0;
1257 }
1258
1259 EXPORT_SYMBOL(snd_ad1848_out);
1260 EXPORT_SYMBOL(snd_ad1848_create);
1261 EXPORT_SYMBOL(snd_ad1848_pcm);
1262 EXPORT_SYMBOL(snd_ad1848_get_pcm_ops);
1263 EXPORT_SYMBOL(snd_ad1848_mixer);
1264 EXPORT_SYMBOL(snd_ad1848_add_ctl);
1265
1266 /*
1267  *  INIT part
1268  */
1269
1270 static int __init alsa_ad1848_init(void)
1271 {
1272         return 0;
1273 }
1274
1275 static void __exit alsa_ad1848_exit(void)
1276 {
1277 }
1278
1279 module_init(alsa_ad1848_init)
1280 module_exit(alsa_ad1848_exit)