[ALSA] Changed Jaroslav Kysela's e-mail from perex@suse.cz to perex@perex.cz
[linux-2.6.git] / sound / isa / ad1848 / ad1848_lib.c
1 /*
2  *  Copyright (c) by Jaroslav Kysela <perex@perex.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/slab.h>
28 #include <linux/ioport.h>
29 #include <sound/core.h>
30 #include <sound/ad1848.h>
31 #include <sound/control.h>
32 #include <sound/tlv.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@perex.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 struct snd_pcm_hw_constraint_list hw_constraints_rates = {
73         .count = ARRAY_SIZE(rates),
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 static void snd_ad1848_wait(struct snd_ad1848 *chip)
103 {
104         int timeout;
105
106         for (timeout = 250; timeout > 0; timeout--) {
107                 if ((inb(AD1848P(chip, REGSEL)) & AD1848_INIT) == 0)
108                         break;
109                 udelay(100);
110         }
111 }
112
113 void snd_ad1848_out(struct snd_ad1848 *chip,
114                            unsigned char reg,
115                            unsigned char value)
116 {
117         snd_ad1848_wait(chip);
118 #ifdef CONFIG_SND_DEBUG
119         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
120                 snd_printk(KERN_WARNING "auto calibration time out - "
121                            "reg = 0x%x, value = 0x%x\n", reg, value);
122 #endif
123         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
124         outb(chip->image[reg] = value, AD1848P(chip, REG));
125         mb();
126         snd_printdd("codec out - reg 0x%x = 0x%x\n",
127                         chip->mce_bit | reg, value);
128 }
129
130 EXPORT_SYMBOL(snd_ad1848_out);
131
132 static void snd_ad1848_dout(struct snd_ad1848 *chip,
133                             unsigned char reg, unsigned char value)
134 {
135         snd_ad1848_wait(chip);
136         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
137         outb(value, AD1848P(chip, REG));
138         mb();
139 }
140
141 static unsigned char snd_ad1848_in(struct snd_ad1848 *chip, unsigned char reg)
142 {
143         snd_ad1848_wait(chip);
144 #ifdef CONFIG_SND_DEBUG
145         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
146                 snd_printk(KERN_WARNING "auto calibration time out - "
147                            "reg = 0x%x\n", reg);
148 #endif
149         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
150         mb();
151         return inb(AD1848P(chip, REG));
152 }
153
154 #if 0
155
156 static void snd_ad1848_debug(struct snd_ad1848 *chip)
157 {
158         printk("AD1848 REGS:      INDEX = 0x%02x  ", inb(AD1848P(chip, REGSEL)));
159         printk("                 STATUS = 0x%02x\n", inb(AD1848P(chip, STATUS)));
160         printk("  0x00: left input      = 0x%02x  ", snd_ad1848_in(chip, 0x00));
161         printk("  0x08: playback format = 0x%02x\n", snd_ad1848_in(chip, 0x08));
162         printk("  0x01: right input     = 0x%02x  ", snd_ad1848_in(chip, 0x01));
163         printk("  0x09: iface (CFIG 1)  = 0x%02x\n", snd_ad1848_in(chip, 0x09));
164         printk("  0x02: AUXA left       = 0x%02x  ", snd_ad1848_in(chip, 0x02));
165         printk("  0x0a: pin control     = 0x%02x\n", snd_ad1848_in(chip, 0x0a));
166         printk("  0x03: AUXA right      = 0x%02x  ", snd_ad1848_in(chip, 0x03));
167         printk("  0x0b: init & status   = 0x%02x\n", snd_ad1848_in(chip, 0x0b));
168         printk("  0x04: AUXB left       = 0x%02x  ", snd_ad1848_in(chip, 0x04));
169         printk("  0x0c: revision & mode = 0x%02x\n", snd_ad1848_in(chip, 0x0c));
170         printk("  0x05: AUXB right      = 0x%02x  ", snd_ad1848_in(chip, 0x05));
171         printk("  0x0d: loopback        = 0x%02x\n", snd_ad1848_in(chip, 0x0d));
172         printk("  0x06: left output     = 0x%02x  ", snd_ad1848_in(chip, 0x06));
173         printk("  0x0e: data upr count  = 0x%02x\n", snd_ad1848_in(chip, 0x0e));
174         printk("  0x07: right output    = 0x%02x  ", snd_ad1848_in(chip, 0x07));
175         printk("  0x0f: data lwr count  = 0x%02x\n", snd_ad1848_in(chip, 0x0f));
176 }
177
178 #endif
179
180 /*
181  *  AD1848 detection / MCE routines
182  */
183
184 static void snd_ad1848_mce_up(struct snd_ad1848 *chip)
185 {
186         unsigned long flags;
187         int timeout;
188
189         snd_ad1848_wait(chip);
190 #ifdef CONFIG_SND_DEBUG
191         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
192                 snd_printk(KERN_WARNING "mce_up - auto calibration time out (0)\n");
193 #endif
194         spin_lock_irqsave(&chip->reg_lock, flags);
195         chip->mce_bit |= AD1848_MCE;
196         timeout = inb(AD1848P(chip, REGSEL));
197         if (timeout == 0x80)
198                 snd_printk(KERN_WARNING "mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
199         if (!(timeout & AD1848_MCE))
200                 outb(chip->mce_bit | (timeout & 0x1f), AD1848P(chip, REGSEL));
201         spin_unlock_irqrestore(&chip->reg_lock, flags);
202 }
203
204 static void snd_ad1848_mce_down(struct snd_ad1848 *chip)
205 {
206         unsigned long flags, timeout;
207         int reg;
208
209         spin_lock_irqsave(&chip->reg_lock, flags);
210         for (timeout = 5; timeout > 0; timeout--)
211                 inb(AD1848P(chip, REGSEL));
212         /* end of cleanup sequence */
213         for (timeout = 12000; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
214                 udelay(100);
215
216         snd_printdd("(1) timeout = %d\n", timeout);
217
218 #ifdef CONFIG_SND_DEBUG
219         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
220                 snd_printk(KERN_WARNING "mce_down [0x%lx] - auto calibration time out (0)\n", AD1848P(chip, REGSEL));
221 #endif
222
223         chip->mce_bit &= ~AD1848_MCE;
224         reg = inb(AD1848P(chip, REGSEL));
225         outb(chip->mce_bit | (reg & 0x1f), AD1848P(chip, REGSEL));
226         if (reg == 0x80)
227                 snd_printk(KERN_WARNING "mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
228         if ((reg & AD1848_MCE) == 0) {
229                 spin_unlock_irqrestore(&chip->reg_lock, flags);
230                 return;
231         }
232
233         /*
234          * Wait for auto-calibration (AC) process to finish, i.e. ACI to go low.
235          * It may take up to 5 sample periods (at most 907 us @ 5.5125 kHz) for
236          * the process to _start_, so it is important to wait at least that long
237          * before checking.  Otherwise we might think AC has finished when it
238          * has in fact not begun.  It could take 128 (no AC) or 384 (AC) cycles
239          * for ACI to drop.  This gives a wait of at most 70 ms with a more
240          * typical value of 3-9 ms.
241          */
242         timeout = jiffies + msecs_to_jiffies(250);
243         do {
244                 spin_unlock_irqrestore(&chip->reg_lock, flags);
245                 msleep(1);
246                 spin_lock_irqsave(&chip->reg_lock, flags);
247                 reg = snd_ad1848_in(chip, AD1848_TEST_INIT) &
248                       AD1848_CALIB_IN_PROGRESS;
249         } while (reg && time_before(jiffies, timeout));
250         spin_unlock_irqrestore(&chip->reg_lock, flags);
251         if (reg)
252                 snd_printk(KERN_ERR
253                            "mce_down - auto calibration time out (2)\n");
254
255         snd_printdd("(4) jiffies = %lu\n", jiffies);
256         snd_printd("mce_down - exit = 0x%x\n", inb(AD1848P(chip, REGSEL)));
257 }
258
259 static unsigned int snd_ad1848_get_count(unsigned char format,
260                                          unsigned int size)
261 {
262         switch (format & 0xe0) {
263         case AD1848_LINEAR_16:
264                 size >>= 1;
265                 break;
266         }
267         if (format & AD1848_STEREO)
268                 size >>= 1;
269         return size;
270 }
271
272 static int snd_ad1848_trigger(struct snd_ad1848 *chip, unsigned char what,
273                               int channel, int cmd)
274 {
275         int result = 0;
276
277 #if 0
278         printk("codec trigger!!! - what = %i, enable = %i, status = 0x%x\n", what, enable, inb(AD1848P(card, STATUS)));
279 #endif
280         spin_lock(&chip->reg_lock);
281         if (cmd == SNDRV_PCM_TRIGGER_START) {
282                 if (chip->image[AD1848_IFACE_CTRL] & what) {
283                         spin_unlock(&chip->reg_lock);
284                         return 0;
285                 }
286                 snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] |= what);
287                 chip->mode |= AD1848_MODE_RUNNING;
288         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
289                 if (!(chip->image[AD1848_IFACE_CTRL] & what)) {
290                         spin_unlock(&chip->reg_lock);
291                         return 0;
292                 }
293                 snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] &= ~what);
294                 chip->mode &= ~AD1848_MODE_RUNNING;
295         } else {
296                 result = -EINVAL;
297         }
298         spin_unlock(&chip->reg_lock);
299         return result;
300 }
301
302 /*
303  *  CODEC I/O
304  */
305
306 static unsigned char snd_ad1848_get_rate(unsigned int rate)
307 {
308         int i;
309
310         for (i = 0; i < ARRAY_SIZE(rates); i++)
311                 if (rate == rates[i])
312                         return freq_bits[i];
313         snd_BUG();
314         return freq_bits[ARRAY_SIZE(rates) - 1];
315 }
316
317 static int snd_ad1848_ioctl(struct snd_pcm_substream *substream,
318                             unsigned int cmd, void *arg)
319 {
320         return snd_pcm_lib_ioctl(substream, cmd, arg);
321 }
322
323 static unsigned char snd_ad1848_get_format(int format, int channels)
324 {
325         unsigned char rformat;
326
327         rformat = AD1848_LINEAR_8;
328         switch (format) {
329         case SNDRV_PCM_FORMAT_A_LAW:    rformat = AD1848_ALAW_8; break;
330         case SNDRV_PCM_FORMAT_MU_LAW:   rformat = AD1848_ULAW_8; break;
331         case SNDRV_PCM_FORMAT_S16_LE:   rformat = AD1848_LINEAR_16; break;
332         }
333         if (channels > 1)
334                 rformat |= AD1848_STEREO;
335 #if 0
336         snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
337 #endif
338         return rformat;
339 }
340
341 static void snd_ad1848_calibrate_mute(struct snd_ad1848 *chip, int mute)
342 {
343         unsigned long flags;
344         
345         mute = mute ? 1 : 0;
346         spin_lock_irqsave(&chip->reg_lock, flags);
347         if (chip->calibrate_mute == mute) {
348                 spin_unlock_irqrestore(&chip->reg_lock, flags);
349                 return;
350         }
351         if (!mute) {
352                 snd_ad1848_dout(chip, AD1848_LEFT_INPUT, chip->image[AD1848_LEFT_INPUT]);
353                 snd_ad1848_dout(chip, AD1848_RIGHT_INPUT, chip->image[AD1848_RIGHT_INPUT]);
354         }
355         snd_ad1848_dout(chip, AD1848_AUX1_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_LEFT_INPUT]);
356         snd_ad1848_dout(chip, AD1848_AUX1_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_RIGHT_INPUT]);
357         snd_ad1848_dout(chip, AD1848_AUX2_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_LEFT_INPUT]);
358         snd_ad1848_dout(chip, AD1848_AUX2_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_RIGHT_INPUT]);
359         snd_ad1848_dout(chip, AD1848_LEFT_OUTPUT, mute ? 0x80 : chip->image[AD1848_LEFT_OUTPUT]);
360         snd_ad1848_dout(chip, AD1848_RIGHT_OUTPUT, mute ? 0x80 : chip->image[AD1848_RIGHT_OUTPUT]);
361         chip->calibrate_mute = mute;
362         spin_unlock_irqrestore(&chip->reg_lock, flags);
363 }
364
365 static void snd_ad1848_set_data_format(struct snd_ad1848 *chip, struct snd_pcm_hw_params *hw_params)
366 {
367         if (hw_params == NULL) {
368                 chip->image[AD1848_DATA_FORMAT] = 0x20;
369         } else {
370                 chip->image[AD1848_DATA_FORMAT] =
371                     snd_ad1848_get_format(params_format(hw_params), params_channels(hw_params)) |
372                     snd_ad1848_get_rate(params_rate(hw_params));
373         }
374         // snd_printk(">>> pmode = 0x%x, dfr = 0x%x\n", pstr->mode, chip->image[AD1848_DATA_FORMAT]);
375 }
376
377 static int snd_ad1848_open(struct snd_ad1848 *chip, unsigned int mode)
378 {
379         unsigned long flags;
380
381         mutex_lock(&chip->open_mutex);
382         if (chip->mode & AD1848_MODE_OPEN) {
383                 mutex_unlock(&chip->open_mutex);
384                 return -EAGAIN;
385         }
386         snd_ad1848_mce_down(chip);
387
388 #ifdef SNDRV_DEBUG_MCE
389         snd_printk("open: (1)\n");
390 #endif
391         snd_ad1848_mce_up(chip);
392         spin_lock_irqsave(&chip->reg_lock, flags);
393         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
394                              AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO |
395                              AD1848_CALIB_MODE);
396         chip->image[AD1848_IFACE_CTRL] |= AD1848_AUTOCALIB;
397         snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
398         spin_unlock_irqrestore(&chip->reg_lock, flags);
399         snd_ad1848_mce_down(chip);
400
401 #ifdef SNDRV_DEBUG_MCE
402         snd_printk("open: (2)\n");
403 #endif
404
405         snd_ad1848_set_data_format(chip, NULL);
406
407         snd_ad1848_mce_up(chip);
408         spin_lock_irqsave(&chip->reg_lock, flags);
409         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
410         spin_unlock_irqrestore(&chip->reg_lock, flags);
411         snd_ad1848_mce_down(chip);
412
413 #ifdef SNDRV_DEBUG_MCE
414         snd_printk("open: (3)\n");
415 #endif
416
417         /* ok. now enable and ack CODEC IRQ */
418         spin_lock_irqsave(&chip->reg_lock, flags);
419         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
420         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
421         chip->image[AD1848_PIN_CTRL] |= AD1848_IRQ_ENABLE;
422         snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
423         spin_unlock_irqrestore(&chip->reg_lock, flags);
424
425         chip->mode = mode;
426         mutex_unlock(&chip->open_mutex);
427
428         return 0;
429 }
430
431 static void snd_ad1848_close(struct snd_ad1848 *chip)
432 {
433         unsigned long flags;
434
435         mutex_lock(&chip->open_mutex);
436         if (!chip->mode) {
437                 mutex_unlock(&chip->open_mutex);
438                 return;
439         }
440         /* disable IRQ */
441         spin_lock_irqsave(&chip->reg_lock, flags);
442         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
443         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
444         chip->image[AD1848_PIN_CTRL] &= ~AD1848_IRQ_ENABLE;
445         snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
446         spin_unlock_irqrestore(&chip->reg_lock, flags);
447
448         /* now disable capture & playback */
449
450         snd_ad1848_mce_up(chip);
451         spin_lock_irqsave(&chip->reg_lock, flags);
452         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
453                              AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
454         snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
455         spin_unlock_irqrestore(&chip->reg_lock, flags);
456         snd_ad1848_mce_down(chip);
457
458         /* clear IRQ again */
459         spin_lock_irqsave(&chip->reg_lock, flags);
460         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
461         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
462         spin_unlock_irqrestore(&chip->reg_lock, flags);
463
464         chip->mode = 0;
465         mutex_unlock(&chip->open_mutex);
466 }
467
468 /*
469  *  ok.. exported functions..
470  */
471
472 static int snd_ad1848_playback_trigger(struct snd_pcm_substream *substream,
473                                        int cmd)
474 {
475         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
476         return snd_ad1848_trigger(chip, AD1848_PLAYBACK_ENABLE, SNDRV_PCM_STREAM_PLAYBACK, cmd);
477 }
478
479 static int snd_ad1848_capture_trigger(struct snd_pcm_substream *substream,
480                                       int cmd)
481 {
482         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
483         return snd_ad1848_trigger(chip, AD1848_CAPTURE_ENABLE, SNDRV_PCM_STREAM_CAPTURE, cmd);
484 }
485
486 static int snd_ad1848_playback_hw_params(struct snd_pcm_substream *substream,
487                                          struct snd_pcm_hw_params *hw_params)
488 {
489         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
490         unsigned long flags;
491         int err;
492
493         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
494                 return err;
495         snd_ad1848_calibrate_mute(chip, 1);
496         snd_ad1848_set_data_format(chip, hw_params);
497         snd_ad1848_mce_up(chip);
498         spin_lock_irqsave(&chip->reg_lock, flags);
499         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
500         spin_unlock_irqrestore(&chip->reg_lock, flags);
501         snd_ad1848_mce_down(chip);
502         snd_ad1848_calibrate_mute(chip, 0);
503         return 0;
504 }
505
506 static int snd_ad1848_playback_hw_free(struct snd_pcm_substream *substream)
507 {
508         return snd_pcm_lib_free_pages(substream);
509 }
510
511 static int snd_ad1848_playback_prepare(struct snd_pcm_substream *substream)
512 {
513         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
514         struct snd_pcm_runtime *runtime = substream->runtime;
515         unsigned long flags;
516         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
517         unsigned int count = snd_pcm_lib_period_bytes(substream);
518
519         chip->dma_size = size;
520         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO);
521         snd_dma_program(chip->dma, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
522         count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
523         spin_lock_irqsave(&chip->reg_lock, flags);
524         snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
525         snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
526         spin_unlock_irqrestore(&chip->reg_lock, flags);
527         return 0;
528 }
529
530 static int snd_ad1848_capture_hw_params(struct snd_pcm_substream *substream,
531                                         struct snd_pcm_hw_params *hw_params)
532 {
533         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
534         unsigned long flags;
535         int err;
536
537         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
538                 return err;
539         snd_ad1848_calibrate_mute(chip, 1);
540         snd_ad1848_set_data_format(chip, hw_params);
541         snd_ad1848_mce_up(chip);
542         spin_lock_irqsave(&chip->reg_lock, flags);
543         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
544         spin_unlock_irqrestore(&chip->reg_lock, flags);
545         snd_ad1848_mce_down(chip);
546         snd_ad1848_calibrate_mute(chip, 0);
547         return 0;
548 }
549
550 static int snd_ad1848_capture_hw_free(struct snd_pcm_substream *substream)
551 {
552         return snd_pcm_lib_free_pages(substream);
553 }
554
555 static int snd_ad1848_capture_prepare(struct snd_pcm_substream *substream)
556 {
557         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
558         struct snd_pcm_runtime *runtime = substream->runtime;
559         unsigned long flags;
560         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
561         unsigned int count = snd_pcm_lib_period_bytes(substream);
562
563         chip->dma_size = size;
564         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
565         snd_dma_program(chip->dma, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
566         count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
567         spin_lock_irqsave(&chip->reg_lock, flags);
568         snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
569         snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
570         spin_unlock_irqrestore(&chip->reg_lock, flags);
571         return 0;
572 }
573
574 static irqreturn_t snd_ad1848_interrupt(int irq, void *dev_id)
575 {
576         struct snd_ad1848 *chip = dev_id;
577
578         if ((chip->mode & AD1848_MODE_PLAY) && chip->playback_substream &&
579             (chip->mode & AD1848_MODE_RUNNING))
580                 snd_pcm_period_elapsed(chip->playback_substream);
581         if ((chip->mode & AD1848_MODE_CAPTURE) && chip->capture_substream &&
582             (chip->mode & AD1848_MODE_RUNNING))
583                 snd_pcm_period_elapsed(chip->capture_substream);
584         outb(0, AD1848P(chip, STATUS)); /* clear global interrupt bit */
585         return IRQ_HANDLED;
586 }
587
588 static snd_pcm_uframes_t snd_ad1848_playback_pointer(struct snd_pcm_substream *substream)
589 {
590         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
591         size_t ptr;
592         
593         if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_PLAYBACK_ENABLE))
594                 return 0;
595         ptr = snd_dma_pointer(chip->dma, chip->dma_size);
596         return bytes_to_frames(substream->runtime, ptr);
597 }
598
599 static snd_pcm_uframes_t snd_ad1848_capture_pointer(struct snd_pcm_substream *substream)
600 {
601         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
602         size_t ptr;
603
604         if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_CAPTURE_ENABLE))
605                 return 0;
606         ptr = snd_dma_pointer(chip->dma, chip->dma_size);
607         return bytes_to_frames(substream->runtime, ptr);
608 }
609
610 /*
611
612  */
613
614 static void snd_ad1848_thinkpad_twiddle(struct snd_ad1848 *chip, int on) {
615
616         int tmp;
617
618         if (!chip->thinkpad_flag) return;
619
620         outb(0x1c, AD1848_THINKPAD_CTL_PORT1);
621         tmp = inb(AD1848_THINKPAD_CTL_PORT2);
622
623         if (on)
624                 /* turn it on */
625                 tmp |= AD1848_THINKPAD_CS4248_ENABLE_BIT;
626         else
627                 /* turn it off */
628                 tmp &= ~AD1848_THINKPAD_CS4248_ENABLE_BIT;
629         
630         outb(tmp, AD1848_THINKPAD_CTL_PORT2);
631
632 }
633
634 #ifdef CONFIG_PM
635 static void snd_ad1848_suspend(struct snd_ad1848 *chip)
636 {
637         snd_pcm_suspend_all(chip->pcm);
638         if (chip->thinkpad_flag)
639                 snd_ad1848_thinkpad_twiddle(chip, 0);
640 }
641
642 static void snd_ad1848_resume(struct snd_ad1848 *chip)
643 {
644         int i;
645
646         if (chip->thinkpad_flag)
647                 snd_ad1848_thinkpad_twiddle(chip, 1);
648
649         /* clear any pendings IRQ */
650         inb(AD1848P(chip, STATUS));
651         outb(0, AD1848P(chip, STATUS));
652         mb();
653
654         snd_ad1848_mce_down(chip);
655         for (i = 0; i < 16; i++)
656                 snd_ad1848_out(chip, i, chip->image[i]);
657         snd_ad1848_mce_up(chip);
658         snd_ad1848_mce_down(chip);
659 }
660 #endif /* CONFIG_PM */
661
662 static int snd_ad1848_probe(struct snd_ad1848 * chip)
663 {
664         unsigned long flags;
665         int i, id, rev, ad1847;
666         unsigned char *ptr;
667
668 #if 0
669         snd_ad1848_debug(chip);
670 #endif
671         id = ad1847 = 0;
672         for (i = 0; i < 1000; i++) {
673                 mb();
674                 if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
675                         udelay(500);
676                 else {
677                         spin_lock_irqsave(&chip->reg_lock, flags);
678                         snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
679                         snd_ad1848_out(chip, AD1848_LEFT_INPUT, 0xaa);
680                         snd_ad1848_out(chip, AD1848_RIGHT_INPUT, 0x45);
681                         rev = snd_ad1848_in(chip, AD1848_RIGHT_INPUT);
682                         if (rev == 0x65) {
683                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
684                                 id = 1;
685                                 ad1847 = 1;
686                                 break;
687                         }
688                         if (snd_ad1848_in(chip, AD1848_LEFT_INPUT) == 0xaa && rev == 0x45) {
689                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
690                                 id = 1;
691                                 break;
692                         }
693                         spin_unlock_irqrestore(&chip->reg_lock, flags);
694                 }
695         }
696         if (id != 1)
697                 return -ENODEV; /* no valid device found */
698         if (chip->hardware == AD1848_HW_DETECT) {
699                 if (ad1847) {
700                         chip->hardware = AD1848_HW_AD1847;
701                 } else {
702                         chip->hardware = AD1848_HW_AD1848;
703                         rev = snd_ad1848_in(chip, AD1848_MISC_INFO);
704                         if (rev & 0x80) {
705                                 chip->hardware = AD1848_HW_CS4248;
706                         } else if ((rev & 0x0f) == 0x0a) {
707                                 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x40);
708                                 for (i = 0; i < 16; ++i) {
709                                         if (snd_ad1848_in(chip, i) != snd_ad1848_in(chip, i + 16)) {
710                                                 chip->hardware = AD1848_HW_CMI8330;
711                                                 break;
712                                         }
713                                 }
714                                 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
715                         }
716                 }
717         }
718         spin_lock_irqsave(&chip->reg_lock, flags);
719         inb(AD1848P(chip, STATUS));     /* clear any pendings IRQ */
720         outb(0, AD1848P(chip, STATUS));
721         mb();
722         spin_unlock_irqrestore(&chip->reg_lock, flags);
723
724         chip->image[AD1848_MISC_INFO] = 0x00;
725         chip->image[AD1848_IFACE_CTRL] =
726             (chip->image[AD1848_IFACE_CTRL] & ~AD1848_SINGLE_DMA) | AD1848_SINGLE_DMA;
727         ptr = (unsigned char *) &chip->image;
728         snd_ad1848_mce_down(chip);
729         spin_lock_irqsave(&chip->reg_lock, flags);
730         for (i = 0; i < 16; i++)        /* ok.. fill all AD1848 registers */
731                 snd_ad1848_out(chip, i, *ptr++);
732         spin_unlock_irqrestore(&chip->reg_lock, flags);
733         snd_ad1848_mce_up(chip);
734         snd_ad1848_mce_down(chip);
735         return 0;               /* all things are ok.. */
736 }
737
738 /*
739
740  */
741
742 static struct snd_pcm_hardware snd_ad1848_playback =
743 {
744         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
745                                  SNDRV_PCM_INFO_MMAP_VALID),
746         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
747                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
748         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
749         .rate_min =             5510,
750         .rate_max =             48000,
751         .channels_min =         1,
752         .channels_max =         2,
753         .buffer_bytes_max =     (128*1024),
754         .period_bytes_min =     64,
755         .period_bytes_max =     (128*1024),
756         .periods_min =          1,
757         .periods_max =          1024,
758         .fifo_size =            0,
759 };
760
761 static struct snd_pcm_hardware snd_ad1848_capture =
762 {
763         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
764                                  SNDRV_PCM_INFO_MMAP_VALID),
765         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
766                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
767         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
768         .rate_min =             5510,
769         .rate_max =             48000,
770         .channels_min =         1,
771         .channels_max =         2,
772         .buffer_bytes_max =     (128*1024),
773         .period_bytes_min =     64,
774         .period_bytes_max =     (128*1024),
775         .periods_min =          1,
776         .periods_max =          1024,
777         .fifo_size =            0,
778 };
779
780 /*
781
782  */
783
784 static int snd_ad1848_playback_open(struct snd_pcm_substream *substream)
785 {
786         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
787         struct snd_pcm_runtime *runtime = substream->runtime;
788         int err;
789
790         if ((err = snd_ad1848_open(chip, AD1848_MODE_PLAY)) < 0)
791                 return err;
792         chip->playback_substream = substream;
793         runtime->hw = snd_ad1848_playback;
794         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
795         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
796         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
797         return 0;
798 }
799
800 static int snd_ad1848_capture_open(struct snd_pcm_substream *substream)
801 {
802         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
803         struct snd_pcm_runtime *runtime = substream->runtime;
804         int err;
805
806         if ((err = snd_ad1848_open(chip, AD1848_MODE_CAPTURE)) < 0)
807                 return err;
808         chip->capture_substream = substream;
809         runtime->hw = snd_ad1848_capture;
810         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
811         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
812         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
813         return 0;
814 }
815
816 static int snd_ad1848_playback_close(struct snd_pcm_substream *substream)
817 {
818         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
819
820         chip->mode &= ~AD1848_MODE_PLAY;
821         chip->playback_substream = NULL;
822         snd_ad1848_close(chip);
823         return 0;
824 }
825
826 static int snd_ad1848_capture_close(struct snd_pcm_substream *substream)
827 {
828         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
829
830         chip->mode &= ~AD1848_MODE_CAPTURE;
831         chip->capture_substream = NULL;
832         snd_ad1848_close(chip);
833         return 0;
834 }
835
836 static int snd_ad1848_free(struct snd_ad1848 *chip)
837 {
838         release_and_free_resource(chip->res_port);
839         if (chip->irq >= 0)
840                 free_irq(chip->irq, (void *) chip);
841         if (chip->dma >= 0) {
842                 snd_dma_disable(chip->dma);
843                 free_dma(chip->dma);
844         }
845         kfree(chip);
846         return 0;
847 }
848
849 static int snd_ad1848_dev_free(struct snd_device *device)
850 {
851         struct snd_ad1848 *chip = device->device_data;
852         return snd_ad1848_free(chip);
853 }
854
855 static const char *snd_ad1848_chip_id(struct snd_ad1848 *chip)
856 {
857         switch (chip->hardware) {
858         case AD1848_HW_AD1847:  return "AD1847";
859         case AD1848_HW_AD1848:  return "AD1848";
860         case AD1848_HW_CS4248:  return "CS4248";
861         case AD1848_HW_CMI8330: return "CMI8330/C3D";
862         default:                return "???";
863         }
864 }
865
866 int snd_ad1848_create(struct snd_card *card,
867                       unsigned long port,
868                       int irq, int dma,
869                       unsigned short hardware,
870                       struct snd_ad1848 ** rchip)
871 {
872         static struct snd_device_ops ops = {
873                 .dev_free =     snd_ad1848_dev_free,
874         };
875         struct snd_ad1848 *chip;
876         int err;
877
878         *rchip = NULL;
879         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
880         if (chip == NULL)
881                 return -ENOMEM;
882         spin_lock_init(&chip->reg_lock);
883         mutex_init(&chip->open_mutex);
884         chip->card = card;
885         chip->port = port;
886         chip->irq = -1;
887         chip->dma = -1;
888         chip->hardware = hardware;
889         memcpy(&chip->image, &snd_ad1848_original_image, sizeof(snd_ad1848_original_image));
890         
891         if ((chip->res_port = request_region(port, 4, "AD1848")) == NULL) {
892                 snd_printk(KERN_ERR "ad1848: can't grab port 0x%lx\n", port);
893                 snd_ad1848_free(chip);
894                 return -EBUSY;
895         }
896         if (request_irq(irq, snd_ad1848_interrupt, IRQF_DISABLED, "AD1848", (void *) chip)) {
897                 snd_printk(KERN_ERR "ad1848: can't grab IRQ %d\n", irq);
898                 snd_ad1848_free(chip);
899                 return -EBUSY;
900         }
901         chip->irq = irq;
902         if (request_dma(dma, "AD1848")) {
903                 snd_printk(KERN_ERR "ad1848: can't grab DMA %d\n", dma);
904                 snd_ad1848_free(chip);
905                 return -EBUSY;
906         }
907         chip->dma = dma;
908
909         if (hardware == AD1848_HW_THINKPAD) {
910                 chip->thinkpad_flag = 1;
911                 chip->hardware = AD1848_HW_DETECT; /* reset */
912                 snd_ad1848_thinkpad_twiddle(chip, 1);
913         }
914
915         if (snd_ad1848_probe(chip) < 0) {
916                 snd_ad1848_free(chip);
917                 return -ENODEV;
918         }
919
920         /* Register device */
921         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
922                 snd_ad1848_free(chip);
923                 return err;
924         }
925
926 #ifdef CONFIG_PM
927         chip->suspend = snd_ad1848_suspend;
928         chip->resume = snd_ad1848_resume;
929 #endif
930
931         *rchip = chip;
932         return 0;
933 }
934
935 EXPORT_SYMBOL(snd_ad1848_create);
936
937 static struct snd_pcm_ops snd_ad1848_playback_ops = {
938         .open =         snd_ad1848_playback_open,
939         .close =        snd_ad1848_playback_close,
940         .ioctl =        snd_ad1848_ioctl,
941         .hw_params =    snd_ad1848_playback_hw_params,
942         .hw_free =      snd_ad1848_playback_hw_free,
943         .prepare =      snd_ad1848_playback_prepare,
944         .trigger =      snd_ad1848_playback_trigger,
945         .pointer =      snd_ad1848_playback_pointer,
946 };
947
948 static struct snd_pcm_ops snd_ad1848_capture_ops = {
949         .open =         snd_ad1848_capture_open,
950         .close =        snd_ad1848_capture_close,
951         .ioctl =        snd_ad1848_ioctl,
952         .hw_params =    snd_ad1848_capture_hw_params,
953         .hw_free =      snd_ad1848_capture_hw_free,
954         .prepare =      snd_ad1848_capture_prepare,
955         .trigger =      snd_ad1848_capture_trigger,
956         .pointer =      snd_ad1848_capture_pointer,
957 };
958
959 int snd_ad1848_pcm(struct snd_ad1848 *chip, int device, struct snd_pcm **rpcm)
960 {
961         struct snd_pcm *pcm;
962         int err;
963
964         if ((err = snd_pcm_new(chip->card, "AD1848", device, 1, 1, &pcm)) < 0)
965                 return err;
966
967         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ad1848_playback_ops);
968         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ad1848_capture_ops);
969
970         pcm->private_data = chip;
971         pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
972         strcpy(pcm->name, snd_ad1848_chip_id(chip));
973
974         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
975                                               snd_dma_isa_data(),
976                                               64*1024, chip->dma > 3 ? 128*1024 : 64*1024);
977
978         chip->pcm = pcm;
979         if (rpcm)
980                 *rpcm = pcm;
981         return 0;
982 }
983
984 EXPORT_SYMBOL(snd_ad1848_pcm);
985
986 const struct snd_pcm_ops *snd_ad1848_get_pcm_ops(int direction)
987 {
988         return direction == SNDRV_PCM_STREAM_PLAYBACK ?
989                 &snd_ad1848_playback_ops : &snd_ad1848_capture_ops;
990 }
991
992 EXPORT_SYMBOL(snd_ad1848_get_pcm_ops);
993
994 /*
995  *  MIXER part
996  */
997
998 static int snd_ad1848_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
999 {
1000         static char *texts[4] = {
1001                 "Line", "Aux", "Mic", "Mix"
1002         };
1003
1004         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1005         uinfo->count = 2;
1006         uinfo->value.enumerated.items = 4;
1007         if (uinfo->value.enumerated.item > 3)
1008                 uinfo->value.enumerated.item = 3;
1009         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1010         return 0;
1011 }
1012
1013 static int snd_ad1848_get_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1014 {
1015         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1016         unsigned long flags;
1017         
1018         spin_lock_irqsave(&chip->reg_lock, flags);
1019         ucontrol->value.enumerated.item[0] = (chip->image[AD1848_LEFT_INPUT] & AD1848_MIXS_ALL) >> 6;
1020         ucontrol->value.enumerated.item[1] = (chip->image[AD1848_RIGHT_INPUT] & AD1848_MIXS_ALL) >> 6;
1021         spin_unlock_irqrestore(&chip->reg_lock, flags);
1022         return 0;
1023 }
1024
1025 static int snd_ad1848_put_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1026 {
1027         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1028         unsigned long flags;
1029         unsigned short left, right;
1030         int change;
1031         
1032         if (ucontrol->value.enumerated.item[0] > 3 ||
1033             ucontrol->value.enumerated.item[1] > 3)
1034                 return -EINVAL;
1035         left = ucontrol->value.enumerated.item[0] << 6;
1036         right = ucontrol->value.enumerated.item[1] << 6;
1037         spin_lock_irqsave(&chip->reg_lock, flags);
1038         left = (chip->image[AD1848_LEFT_INPUT] & ~AD1848_MIXS_ALL) | left;
1039         right = (chip->image[AD1848_RIGHT_INPUT] & ~AD1848_MIXS_ALL) | right;
1040         change = left != chip->image[AD1848_LEFT_INPUT] ||
1041                  right != chip->image[AD1848_RIGHT_INPUT];
1042         snd_ad1848_out(chip, AD1848_LEFT_INPUT, left);
1043         snd_ad1848_out(chip, AD1848_RIGHT_INPUT, right);
1044         spin_unlock_irqrestore(&chip->reg_lock, flags);
1045         return change;
1046 }
1047
1048 static int snd_ad1848_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1049 {
1050         int mask = (kcontrol->private_value >> 16) & 0xff;
1051
1052         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1053         uinfo->count = 1;
1054         uinfo->value.integer.min = 0;
1055         uinfo->value.integer.max = mask;
1056         return 0;
1057 }
1058
1059 static int snd_ad1848_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1060 {
1061         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1062         unsigned long flags;
1063         int reg = kcontrol->private_value & 0xff;
1064         int shift = (kcontrol->private_value >> 8) & 0xff;
1065         int mask = (kcontrol->private_value >> 16) & 0xff;
1066         int invert = (kcontrol->private_value >> 24) & 0xff;
1067         
1068         spin_lock_irqsave(&chip->reg_lock, flags);
1069         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1070         spin_unlock_irqrestore(&chip->reg_lock, flags);
1071         if (invert)
1072                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1073         return 0;
1074 }
1075
1076 static int snd_ad1848_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1077 {
1078         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1079         unsigned long flags;
1080         int reg = kcontrol->private_value & 0xff;
1081         int shift = (kcontrol->private_value >> 8) & 0xff;
1082         int mask = (kcontrol->private_value >> 16) & 0xff;
1083         int invert = (kcontrol->private_value >> 24) & 0xff;
1084         int change;
1085         unsigned short val;
1086         
1087         val = (ucontrol->value.integer.value[0] & mask);
1088         if (invert)
1089                 val = mask - val;
1090         val <<= shift;
1091         spin_lock_irqsave(&chip->reg_lock, flags);
1092         val = (chip->image[reg] & ~(mask << shift)) | val;
1093         change = val != chip->image[reg];
1094         snd_ad1848_out(chip, reg, val);
1095         spin_unlock_irqrestore(&chip->reg_lock, flags);
1096         return change;
1097 }
1098
1099 static int snd_ad1848_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1100 {
1101         int mask = (kcontrol->private_value >> 24) & 0xff;
1102
1103         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1104         uinfo->count = 2;
1105         uinfo->value.integer.min = 0;
1106         uinfo->value.integer.max = mask;
1107         return 0;
1108 }
1109
1110 static int snd_ad1848_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1111 {
1112         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1113         unsigned long flags;
1114         int left_reg = kcontrol->private_value & 0xff;
1115         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1116         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1117         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1118         int mask = (kcontrol->private_value >> 24) & 0xff;
1119         int invert = (kcontrol->private_value >> 22) & 1;
1120         
1121         spin_lock_irqsave(&chip->reg_lock, flags);
1122         ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
1123         ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
1124         spin_unlock_irqrestore(&chip->reg_lock, flags);
1125         if (invert) {
1126                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1127                 ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1128         }
1129         return 0;
1130 }
1131
1132 static int snd_ad1848_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1133 {
1134         struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
1135         unsigned long flags;
1136         int left_reg = kcontrol->private_value & 0xff;
1137         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1138         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1139         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1140         int mask = (kcontrol->private_value >> 24) & 0xff;
1141         int invert = (kcontrol->private_value >> 22) & 1;
1142         int change;
1143         unsigned short val1, val2;
1144         
1145         val1 = ucontrol->value.integer.value[0] & mask;
1146         val2 = ucontrol->value.integer.value[1] & mask;
1147         if (invert) {
1148                 val1 = mask - val1;
1149                 val2 = mask - val2;
1150         }
1151         val1 <<= shift_left;
1152         val2 <<= shift_right;
1153         spin_lock_irqsave(&chip->reg_lock, flags);
1154         if (left_reg != right_reg) {
1155                 val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1156                 val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1157                 change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
1158                 snd_ad1848_out(chip, left_reg, val1);
1159                 snd_ad1848_out(chip, right_reg, val2);
1160         } else {
1161                 val1 = (chip->image[left_reg] & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
1162                 change = val1 != chip->image[left_reg];
1163                 snd_ad1848_out(chip, left_reg, val1);           
1164         }
1165         spin_unlock_irqrestore(&chip->reg_lock, flags);
1166         return change;
1167 }
1168
1169 /*
1170  */
1171 int snd_ad1848_add_ctl_elem(struct snd_ad1848 *chip,
1172                             const struct ad1848_mix_elem *c)
1173 {
1174         static struct snd_kcontrol_new newctls[] = {
1175                 [AD1848_MIX_SINGLE] = {
1176                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1177                         .info = snd_ad1848_info_single,
1178                         .get = snd_ad1848_get_single,
1179                         .put = snd_ad1848_put_single,
1180                 },
1181                 [AD1848_MIX_DOUBLE] = {
1182                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1183                         .info = snd_ad1848_info_double,
1184                         .get = snd_ad1848_get_double,
1185                         .put = snd_ad1848_put_double,
1186                 },
1187                 [AD1848_MIX_CAPTURE] = {
1188                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1189                         .info = snd_ad1848_info_mux,
1190                         .get = snd_ad1848_get_mux,
1191                         .put = snd_ad1848_put_mux,
1192                 },
1193         };
1194         struct snd_kcontrol *ctl;
1195         int err;
1196
1197         ctl = snd_ctl_new1(&newctls[c->type], chip);
1198         if (! ctl)
1199                 return -ENOMEM;
1200         strlcpy(ctl->id.name, c->name, sizeof(ctl->id.name));
1201         ctl->id.index = c->index;
1202         ctl->private_value = c->private_value;
1203         if (c->tlv) {
1204                 ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
1205                 ctl->tlv.p = c->tlv;
1206         }
1207         if ((err = snd_ctl_add(chip->card, ctl)) < 0)
1208                 return err;
1209         return 0;
1210 }
1211
1212 EXPORT_SYMBOL(snd_ad1848_add_ctl_elem);
1213
1214 static const DECLARE_TLV_DB_SCALE(db_scale_6bit, -9450, 150, 0);
1215 static const DECLARE_TLV_DB_SCALE(db_scale_5bit_12db_max, -3450, 150, 0);
1216 static const DECLARE_TLV_DB_SCALE(db_scale_rec_gain, 0, 150, 0);
1217
1218 static struct ad1848_mix_elem snd_ad1848_controls[] = {
1219 AD1848_DOUBLE("PCM Playback Switch", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 7, 7, 1, 1),
1220 AD1848_DOUBLE_TLV("PCM Playback Volume", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 0, 0, 63, 1,
1221                   db_scale_6bit),
1222 AD1848_DOUBLE("Aux Playback Switch", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1223 AD1848_DOUBLE_TLV("Aux Playback Volume", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 0, 0, 31, 1,
1224                   db_scale_5bit_12db_max),
1225 AD1848_DOUBLE("Aux Playback Switch", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1226 AD1848_DOUBLE_TLV("Aux Playback Volume", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 0, 0, 31, 1,
1227                   db_scale_5bit_12db_max),
1228 AD1848_DOUBLE_TLV("Capture Volume", 0, AD1848_LEFT_INPUT, AD1848_RIGHT_INPUT, 0, 0, 15, 0,
1229                   db_scale_rec_gain),
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_TLV("Loopback Capture Volume", 0, AD1848_LOOPBACK, 1, 63, 0,
1236                   db_scale_6bit),
1237 };
1238                                         
1239 int snd_ad1848_mixer(struct snd_ad1848 *chip)
1240 {
1241         struct snd_card *card;
1242         struct snd_pcm *pcm;
1243         unsigned int idx;
1244         int err;
1245
1246         snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1247
1248         pcm = chip->pcm;
1249         card = chip->card;
1250
1251         strcpy(card->mixername, pcm->name);
1252
1253         for (idx = 0; idx < ARRAY_SIZE(snd_ad1848_controls); idx++)
1254                 if ((err = snd_ad1848_add_ctl_elem(chip, &snd_ad1848_controls[idx])) < 0)
1255                         return err;
1256
1257         return 0;
1258 }
1259
1260 EXPORT_SYMBOL(snd_ad1848_mixer);
1261
1262 /*
1263  *  INIT part
1264  */
1265
1266 static int __init alsa_ad1848_init(void)
1267 {
1268         return 0;
1269 }
1270
1271 static void __exit alsa_ad1848_exit(void)
1272 {
1273 }
1274
1275 module_init(alsa_ad1848_init)
1276 module_exit(alsa_ad1848_exit)