[ALSA] Add even more 'const' to everything related to TLV
[linux-2.6.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/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@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 struct snd_pcm_hw_constraint_list 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(struct snd_ad1848 *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(KERN_WARNING "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 EXPORT_SYMBOL(snd_ad1848_out);
123
124 static void snd_ad1848_dout(struct snd_ad1848 *chip,
125                             unsigned char reg, unsigned char value)
126 {
127         int timeout;
128
129         for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
130                 udelay(100);
131         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
132         outb(value, AD1848P(chip, REG));
133         mb();
134 }
135
136 static unsigned char snd_ad1848_in(struct snd_ad1848 *chip, unsigned char reg)
137 {
138         int timeout;
139
140         for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
141                 udelay(100);
142 #ifdef CONFIG_SND_DEBUG
143         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
144                 snd_printk(KERN_WARNING "auto calibration time out - reg = 0x%x\n", reg);
145 #endif
146         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
147         mb();
148         return inb(AD1848P(chip, REG));
149 }
150
151 #if 0
152
153 static void snd_ad1848_debug(struct snd_ad1848 *chip)
154 {
155         printk("AD1848 REGS:      INDEX = 0x%02x  ", inb(AD1848P(chip, REGSEL)));
156         printk("                 STATUS = 0x%02x\n", inb(AD1848P(chip, STATUS)));
157         printk("  0x00: left input      = 0x%02x  ", snd_ad1848_in(chip, 0x00));
158         printk("  0x08: playback format = 0x%02x\n", snd_ad1848_in(chip, 0x08));
159         printk("  0x01: right input     = 0x%02x  ", snd_ad1848_in(chip, 0x01));
160         printk("  0x09: iface (CFIG 1)  = 0x%02x\n", snd_ad1848_in(chip, 0x09));
161         printk("  0x02: AUXA left       = 0x%02x  ", snd_ad1848_in(chip, 0x02));
162         printk("  0x0a: pin control     = 0x%02x\n", snd_ad1848_in(chip, 0x0a));
163         printk("  0x03: AUXA right      = 0x%02x  ", snd_ad1848_in(chip, 0x03));
164         printk("  0x0b: init & status   = 0x%02x\n", snd_ad1848_in(chip, 0x0b));
165         printk("  0x04: AUXB left       = 0x%02x  ", snd_ad1848_in(chip, 0x04));
166         printk("  0x0c: revision & mode = 0x%02x\n", snd_ad1848_in(chip, 0x0c));
167         printk("  0x05: AUXB right      = 0x%02x  ", snd_ad1848_in(chip, 0x05));
168         printk("  0x0d: loopback        = 0x%02x\n", snd_ad1848_in(chip, 0x0d));
169         printk("  0x06: left output     = 0x%02x  ", snd_ad1848_in(chip, 0x06));
170         printk("  0x0e: data upr count  = 0x%02x\n", snd_ad1848_in(chip, 0x0e));
171         printk("  0x07: right output    = 0x%02x  ", snd_ad1848_in(chip, 0x07));
172         printk("  0x0f: data lwr count  = 0x%02x\n", snd_ad1848_in(chip, 0x0f));
173 }
174
175 #endif
176
177 /*
178  *  AD1848 detection / MCE routines
179  */
180
181 static void snd_ad1848_mce_up(struct snd_ad1848 *chip)
182 {
183         unsigned long flags;
184         int timeout;
185
186         for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
187                 udelay(100);
188 #ifdef CONFIG_SND_DEBUG
189         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
190                 snd_printk(KERN_WARNING "mce_up - auto calibration time out (0)\n");
191 #endif
192         spin_lock_irqsave(&chip->reg_lock, flags);
193         chip->mce_bit |= AD1848_MCE;
194         timeout = inb(AD1848P(chip, REGSEL));
195         if (timeout == 0x80)
196                 snd_printk(KERN_WARNING "mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
197         if (!(timeout & AD1848_MCE))
198                 outb(chip->mce_bit | (timeout & 0x1f), AD1848P(chip, REGSEL));
199         spin_unlock_irqrestore(&chip->reg_lock, flags);
200 }
201
202 static void snd_ad1848_mce_down(struct snd_ad1848 *chip)
203 {
204         unsigned long flags;
205         int timeout;
206         signed long time;
207
208         spin_lock_irqsave(&chip->reg_lock, flags);
209         for (timeout = 5; timeout > 0; timeout--)
210                 inb(AD1848P(chip, REGSEL));
211         /* end of cleanup sequence */
212         for (timeout = 12000; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
213                 udelay(100);
214 #if 0
215         printk("(1) timeout = %i\n", timeout);
216 #endif
217 #ifdef CONFIG_SND_DEBUG
218         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
219                 snd_printk(KERN_WARNING "mce_down [0x%lx] - auto calibration time out (0)\n", AD1848P(chip, REGSEL));
220 #endif
221         chip->mce_bit &= ~AD1848_MCE;
222         timeout = inb(AD1848P(chip, REGSEL));
223         outb(chip->mce_bit | (timeout & 0x1f), AD1848P(chip, REGSEL));
224         if (timeout == 0x80)
225                 snd_printk(KERN_WARNING "mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
226         if ((timeout & AD1848_MCE) == 0) {
227                 spin_unlock_irqrestore(&chip->reg_lock, flags);
228                 return;
229         }
230         /* calibration process */
231
232         for (timeout = 500; timeout > 0 && (snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) == 0; timeout--);
233         if ((snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) == 0) {
234                 snd_printd("mce_down - auto calibration time out (1)\n");
235                 spin_unlock_irqrestore(&chip->reg_lock, flags);
236                 return;
237         }
238 #if 0
239         printk("(2) timeout = %i, jiffies = %li\n", timeout, jiffies);
240 #endif
241         time = HZ / 4;
242         while (snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) {
243                 spin_unlock_irqrestore(&chip->reg_lock, flags);
244                 if (time <= 0) {
245                         snd_printk(KERN_ERR "mce_down - auto calibration time out (2)\n");
246                         return;
247                 }
248                 time = schedule_timeout_interruptible(time);
249                 spin_lock_irqsave(&chip->reg_lock, flags);
250         }
251 #if 0
252         printk("(3) jiffies = %li\n", jiffies);
253 #endif
254         time = HZ / 10;
255         while (inb(AD1848P(chip, REGSEL)) & AD1848_INIT) {
256                 spin_unlock_irqrestore(&chip->reg_lock, flags);
257                 if (time <= 0) {
258                         snd_printk(KERN_ERR "mce_down - auto calibration time out (3)\n");
259                         return;
260                 }
261                 time = schedule_timeout_interruptible(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(struct snd_ad1848 *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(struct snd_pcm_substream *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(struct snd_ad1848 *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(struct snd_ad1848 *chip, struct snd_pcm_hw_params *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(struct snd_ad1848 *chip, unsigned int mode)
390 {
391         unsigned long flags;
392
393         mutex_lock(&chip->open_mutex);
394         if (chip->mode & AD1848_MODE_OPEN) {
395                 mutex_unlock(&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         mutex_unlock(&chip->open_mutex);
439
440         return 0;
441 }
442
443 static void snd_ad1848_close(struct snd_ad1848 *chip)
444 {
445         unsigned long flags;
446
447         mutex_lock(&chip->open_mutex);
448         if (!chip->mode) {
449                 mutex_unlock(&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         mutex_unlock(&chip->open_mutex);
478 }
479
480 /*
481  *  ok.. exported functions..
482  */
483
484 static int snd_ad1848_playback_trigger(struct snd_pcm_substream *substream,
485                                        int cmd)
486 {
487         struct snd_ad1848 *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(struct snd_pcm_substream *substream,
492                                       int cmd)
493 {
494         struct snd_ad1848 *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(struct snd_pcm_substream *substream,
499                                          struct snd_pcm_hw_params *hw_params)
500 {
501         struct snd_ad1848 *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(struct snd_pcm_substream *substream)
519 {
520         return snd_pcm_lib_free_pages(substream);
521 }
522
523 static int snd_ad1848_playback_prepare(struct snd_pcm_substream *substream)
524 {
525         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
526         struct snd_pcm_runtime *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(struct snd_pcm_substream *substream,
543                                         struct snd_pcm_hw_params *hw_params)
544 {
545         struct snd_ad1848 *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(struct snd_pcm_substream *substream)
563 {
564         return snd_pcm_lib_free_pages(substream);
565 }
566
567 static int snd_ad1848_capture_prepare(struct snd_pcm_substream *substream)
568 {
569         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
570         struct snd_pcm_runtime *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)
587 {
588         struct snd_ad1848 *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(struct snd_pcm_substream *substream)
601 {
602         struct snd_ad1848 *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(struct snd_pcm_substream *substream)
612 {
613         struct snd_ad1848 *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(struct snd_ad1848 *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 void snd_ad1848_suspend(struct snd_ad1848 *chip)
648 {
649         snd_pcm_suspend_all(chip->pcm);
650         if (chip->thinkpad_flag)
651                 snd_ad1848_thinkpad_twiddle(chip, 0);
652 }
653
654 static void snd_ad1848_resume(struct snd_ad1848 *chip)
655 {
656         int i;
657
658         if (chip->thinkpad_flag)
659                 snd_ad1848_thinkpad_twiddle(chip, 1);
660
661         /* clear any pendings IRQ */
662         inb(AD1848P(chip, STATUS));
663         outb(0, AD1848P(chip, STATUS));
664         mb();
665
666         snd_ad1848_mce_down(chip);
667         for (i = 0; i < 16; i++)
668                 snd_ad1848_out(chip, i, chip->image[i]);
669         snd_ad1848_mce_up(chip);
670         snd_ad1848_mce_down(chip);
671 }
672 #endif /* CONFIG_PM */
673
674 static int snd_ad1848_probe(struct snd_ad1848 * chip)
675 {
676         unsigned long flags;
677         int i, id, rev, ad1847;
678         unsigned char *ptr;
679
680 #if 0
681         snd_ad1848_debug(chip);
682 #endif
683         id = ad1847 = 0;
684         for (i = 0; i < 1000; i++) {
685                 mb();
686                 if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
687                         udelay(500);
688                 else {
689                         spin_lock_irqsave(&chip->reg_lock, flags);
690                         snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
691                         snd_ad1848_out(chip, AD1848_LEFT_INPUT, 0xaa);
692                         snd_ad1848_out(chip, AD1848_RIGHT_INPUT, 0x45);
693                         rev = snd_ad1848_in(chip, AD1848_RIGHT_INPUT);
694                         if (rev == 0x65) {
695                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
696                                 id = 1;
697                                 ad1847 = 1;
698                                 break;
699                         }
700                         if (snd_ad1848_in(chip, AD1848_LEFT_INPUT) == 0xaa && rev == 0x45) {
701                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
702                                 id = 1;
703                                 break;
704                         }
705                         spin_unlock_irqrestore(&chip->reg_lock, flags);
706                 }
707         }
708         if (id != 1)
709                 return -ENODEV; /* no valid device found */
710         if (chip->hardware == AD1848_HW_DETECT) {
711                 if (ad1847) {
712                         chip->hardware = AD1848_HW_AD1847;
713                 } else {
714                         chip->hardware = AD1848_HW_AD1848;
715                         rev = snd_ad1848_in(chip, AD1848_MISC_INFO);
716                         if (rev & 0x80) {
717                                 chip->hardware = AD1848_HW_CS4248;
718                         } else if ((rev & 0x0f) == 0x0a) {
719                                 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x40);
720                                 for (i = 0; i < 16; ++i) {
721                                         if (snd_ad1848_in(chip, i) != snd_ad1848_in(chip, i + 16)) {
722                                                 chip->hardware = AD1848_HW_CMI8330;
723                                                 break;
724                                         }
725                                 }
726                                 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
727                         }
728                 }
729         }
730         spin_lock_irqsave(&chip->reg_lock, flags);
731         inb(AD1848P(chip, STATUS));     /* clear any pendings IRQ */
732         outb(0, AD1848P(chip, STATUS));
733         mb();
734         spin_unlock_irqrestore(&chip->reg_lock, flags);
735
736         chip->image[AD1848_MISC_INFO] = 0x00;
737         chip->image[AD1848_IFACE_CTRL] =
738             (chip->image[AD1848_IFACE_CTRL] & ~AD1848_SINGLE_DMA) | AD1848_SINGLE_DMA;
739         ptr = (unsigned char *) &chip->image;
740         snd_ad1848_mce_down(chip);
741         spin_lock_irqsave(&chip->reg_lock, flags);
742         for (i = 0; i < 16; i++)        /* ok.. fill all AD1848 registers */
743                 snd_ad1848_out(chip, i, *ptr++);
744         spin_unlock_irqrestore(&chip->reg_lock, flags);
745         snd_ad1848_mce_up(chip);
746         snd_ad1848_mce_down(chip);
747         return 0;               /* all things are ok.. */
748 }
749
750 /*
751
752  */
753
754 static struct snd_pcm_hardware snd_ad1848_playback =
755 {
756         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
757                                  SNDRV_PCM_INFO_MMAP_VALID),
758         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
759                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
760         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
761         .rate_min =             5510,
762         .rate_max =             48000,
763         .channels_min =         1,
764         .channels_max =         2,
765         .buffer_bytes_max =     (128*1024),
766         .period_bytes_min =     64,
767         .period_bytes_max =     (128*1024),
768         .periods_min =          1,
769         .periods_max =          1024,
770         .fifo_size =            0,
771 };
772
773 static struct snd_pcm_hardware snd_ad1848_capture =
774 {
775         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
776                                  SNDRV_PCM_INFO_MMAP_VALID),
777         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
778                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
779         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
780         .rate_min =             5510,
781         .rate_max =             48000,
782         .channels_min =         1,
783         .channels_max =         2,
784         .buffer_bytes_max =     (128*1024),
785         .period_bytes_min =     64,
786         .period_bytes_max =     (128*1024),
787         .periods_min =          1,
788         .periods_max =          1024,
789         .fifo_size =            0,
790 };
791
792 /*
793
794  */
795
796 static int snd_ad1848_playback_open(struct snd_pcm_substream *substream)
797 {
798         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
799         struct snd_pcm_runtime *runtime = substream->runtime;
800         int err;
801
802         if ((err = snd_ad1848_open(chip, AD1848_MODE_PLAY)) < 0)
803                 return err;
804         chip->playback_substream = substream;
805         runtime->hw = snd_ad1848_playback;
806         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
807         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
808         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
809         return 0;
810 }
811
812 static int snd_ad1848_capture_open(struct snd_pcm_substream *substream)
813 {
814         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
815         struct snd_pcm_runtime *runtime = substream->runtime;
816         int err;
817
818         if ((err = snd_ad1848_open(chip, AD1848_MODE_CAPTURE)) < 0)
819                 return err;
820         chip->capture_substream = substream;
821         runtime->hw = snd_ad1848_capture;
822         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
823         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
824         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
825         return 0;
826 }
827
828 static int snd_ad1848_playback_close(struct snd_pcm_substream *substream)
829 {
830         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
831
832         chip->mode &= ~AD1848_MODE_PLAY;
833         chip->playback_substream = NULL;
834         snd_ad1848_close(chip);
835         return 0;
836 }
837
838 static int snd_ad1848_capture_close(struct snd_pcm_substream *substream)
839 {
840         struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
841
842         chip->mode &= ~AD1848_MODE_CAPTURE;
843         chip->capture_substream = NULL;
844         snd_ad1848_close(chip);
845         return 0;
846 }
847
848 static int snd_ad1848_free(struct snd_ad1848 *chip)
849 {
850         release_and_free_resource(chip->res_port);
851         if (chip->irq >= 0)
852                 free_irq(chip->irq, (void *) chip);
853         if (chip->dma >= 0) {
854                 snd_dma_disable(chip->dma);
855                 free_dma(chip->dma);
856         }
857         kfree(chip);
858         return 0;
859 }
860
861 static int snd_ad1848_dev_free(struct snd_device *device)
862 {
863         struct snd_ad1848 *chip = device->device_data;
864         return snd_ad1848_free(chip);
865 }
866
867 static const char *snd_ad1848_chip_id(struct snd_ad1848 *chip)
868 {
869         switch (chip->hardware) {
870         case AD1848_HW_AD1847:  return "AD1847";
871         case AD1848_HW_AD1848:  return "AD1848";
872         case AD1848_HW_CS4248:  return "CS4248";
873         case AD1848_HW_CMI8330: return "CMI8330/C3D";
874         default:                return "???";
875         }
876 }
877
878 int snd_ad1848_create(struct snd_card *card,
879                       unsigned long port,
880                       int irq, int dma,
881                       unsigned short hardware,
882                       struct snd_ad1848 ** rchip)
883 {
884         static struct snd_device_ops ops = {
885                 .dev_free =     snd_ad1848_dev_free,
886         };
887         struct snd_ad1848 *chip;
888         int err;
889
890         *rchip = NULL;
891         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
892         if (chip == NULL)
893                 return -ENOMEM;
894         spin_lock_init(&chip->reg_lock);
895         mutex_init(&chip->open_mutex);
896         chip->card = card;
897         chip->port = port;
898         chip->irq = -1;
899         chip->dma = -1;
900         chip->hardware = hardware;
901         memcpy(&chip->image, &snd_ad1848_original_image, sizeof(snd_ad1848_original_image));
902         
903         if ((chip->res_port = request_region(port, 4, "AD1848")) == NULL) {
904                 snd_printk(KERN_ERR "ad1848: can't grab port 0x%lx\n", port);
905                 snd_ad1848_free(chip);
906                 return -EBUSY;
907         }
908         if (request_irq(irq, snd_ad1848_interrupt, IRQF_DISABLED, "AD1848", (void *) chip)) {
909                 snd_printk(KERN_ERR "ad1848: can't grab IRQ %d\n", irq);
910                 snd_ad1848_free(chip);
911                 return -EBUSY;
912         }
913         chip->irq = irq;
914         if (request_dma(dma, "AD1848")) {
915                 snd_printk(KERN_ERR "ad1848: can't grab DMA %d\n", dma);
916                 snd_ad1848_free(chip);
917                 return -EBUSY;
918         }
919         chip->dma = dma;
920
921         if (hardware == AD1848_HW_THINKPAD) {
922                 chip->thinkpad_flag = 1;
923                 chip->hardware = AD1848_HW_DETECT; /* reset */
924                 snd_ad1848_thinkpad_twiddle(chip, 1);
925         }
926
927         if (snd_ad1848_probe(chip) < 0) {
928                 snd_ad1848_free(chip);
929                 return -ENODEV;
930         }
931
932         /* Register device */
933         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
934                 snd_ad1848_free(chip);
935                 return err;
936         }
937
938 #ifdef CONFIG_PM
939         chip->suspend = snd_ad1848_suspend;
940         chip->resume = snd_ad1848_resume;
941 #endif
942
943         *rchip = chip;
944         return 0;
945 }
946
947 EXPORT_SYMBOL(snd_ad1848_create);
948
949 static struct snd_pcm_ops snd_ad1848_playback_ops = {
950         .open =         snd_ad1848_playback_open,
951         .close =        snd_ad1848_playback_close,
952         .ioctl =        snd_ad1848_ioctl,
953         .hw_params =    snd_ad1848_playback_hw_params,
954         .hw_free =      snd_ad1848_playback_hw_free,
955         .prepare =      snd_ad1848_playback_prepare,
956         .trigger =      snd_ad1848_playback_trigger,
957         .pointer =      snd_ad1848_playback_pointer,
958 };
959
960 static struct snd_pcm_ops snd_ad1848_capture_ops = {
961         .open =         snd_ad1848_capture_open,
962         .close =        snd_ad1848_capture_close,
963         .ioctl =        snd_ad1848_ioctl,
964         .hw_params =    snd_ad1848_capture_hw_params,
965         .hw_free =      snd_ad1848_capture_hw_free,
966         .prepare =      snd_ad1848_capture_prepare,
967         .trigger =      snd_ad1848_capture_trigger,
968         .pointer =      snd_ad1848_capture_pointer,
969 };
970
971 int snd_ad1848_pcm(struct snd_ad1848 *chip, int device, struct snd_pcm **rpcm)
972 {
973         struct snd_pcm *pcm;
974         int err;
975
976         if ((err = snd_pcm_new(chip->card, "AD1848", device, 1, 1, &pcm)) < 0)
977                 return err;
978
979         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ad1848_playback_ops);
980         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ad1848_capture_ops);
981
982         pcm->private_data = chip;
983         pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
984         strcpy(pcm->name, snd_ad1848_chip_id(chip));
985
986         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
987                                               snd_dma_isa_data(),
988                                               64*1024, chip->dma > 3 ? 128*1024 : 64*1024);
989
990         chip->pcm = pcm;
991         if (rpcm)
992                 *rpcm = pcm;
993         return 0;
994 }
995
996 EXPORT_SYMBOL(snd_ad1848_pcm);
997
998 const struct snd_pcm_ops *snd_ad1848_get_pcm_ops(int direction)
999 {
1000         return direction == SNDRV_PCM_STREAM_PLAYBACK ?
1001                 &snd_ad1848_playback_ops : &snd_ad1848_capture_ops;
1002 }
1003
1004 EXPORT_SYMBOL(snd_ad1848_get_pcm_ops);
1005
1006 /*
1007  *  MIXER part
1008  */
1009
1010 static int snd_ad1848_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *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(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         
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(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1038 {
1039         struct snd_ad1848 *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(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *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(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1072 {
1073         struct snd_ad1848 *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(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1089 {
1090         struct snd_ad1848 *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(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *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(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1123 {
1124         struct snd_ad1848 *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(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1145 {
1146         struct snd_ad1848 *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_elem(struct snd_ad1848 *chip,
1184                             const struct ad1848_mix_elem *c)
1185 {
1186         static struct snd_kcontrol_new newctls[] = {
1187                 [AD1848_MIX_SINGLE] = {
1188                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1189                         .info = snd_ad1848_info_single,
1190                         .get = snd_ad1848_get_single,
1191                         .put = snd_ad1848_put_single,
1192                 },
1193                 [AD1848_MIX_DOUBLE] = {
1194                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1195                         .info = snd_ad1848_info_double,
1196                         .get = snd_ad1848_get_double,
1197                         .put = snd_ad1848_put_double,
1198                 },
1199                 [AD1848_MIX_CAPTURE] = {
1200                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1201                         .info = snd_ad1848_info_mux,
1202                         .get = snd_ad1848_get_mux,
1203                         .put = snd_ad1848_put_mux,
1204                 },
1205         };
1206         struct snd_kcontrol *ctl;
1207         int err;
1208
1209         ctl = snd_ctl_new1(&newctls[c->type], chip);
1210         if (! ctl)
1211                 return -ENOMEM;
1212         strlcpy(ctl->id.name, c->name, sizeof(ctl->id.name));
1213         ctl->id.index = c->index;
1214         ctl->private_value = c->private_value;
1215         if (c->tlv) {
1216                 ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
1217                 ctl->tlv.p = c->tlv;
1218         }
1219         if ((err = snd_ctl_add(chip->card, ctl)) < 0)
1220                 return err;
1221         return 0;
1222 }
1223
1224 EXPORT_SYMBOL(snd_ad1848_add_ctl_elem);
1225
1226 static const DECLARE_TLV_DB_SCALE(db_scale_6bit, -9450, 150, 0);
1227 static const DECLARE_TLV_DB_SCALE(db_scale_5bit_12db_max, -3450, 150, 0);
1228 static const DECLARE_TLV_DB_SCALE(db_scale_rec_gain, 0, 150, 0);
1229
1230 static struct ad1848_mix_elem snd_ad1848_controls[] = {
1231 AD1848_DOUBLE("PCM Playback Switch", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 7, 7, 1, 1),
1232 AD1848_DOUBLE_TLV("PCM Playback Volume", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 0, 0, 63, 1,
1233                   db_scale_6bit),
1234 AD1848_DOUBLE("Aux Playback Switch", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1235 AD1848_DOUBLE_TLV("Aux Playback Volume", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 0, 0, 31, 1,
1236                   db_scale_5bit_12db_max),
1237 AD1848_DOUBLE("Aux Playback Switch", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1238 AD1848_DOUBLE_TLV("Aux Playback Volume", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 0, 0, 31, 1,
1239                   db_scale_5bit_12db_max),
1240 AD1848_DOUBLE_TLV("Capture Volume", 0, AD1848_LEFT_INPUT, AD1848_RIGHT_INPUT, 0, 0, 15, 0,
1241                   db_scale_rec_gain),
1242 {
1243         .name = "Capture Source",
1244         .type = AD1848_MIX_CAPTURE,
1245 },
1246 AD1848_SINGLE("Loopback Capture Switch", 0, AD1848_LOOPBACK, 0, 1, 0),
1247 AD1848_SINGLE_TLV("Loopback Capture Volume", 0, AD1848_LOOPBACK, 1, 63, 0,
1248                   db_scale_6bit),
1249 };
1250                                         
1251 int snd_ad1848_mixer(struct snd_ad1848 *chip)
1252 {
1253         struct snd_card *card;
1254         struct snd_pcm *pcm;
1255         unsigned int idx;
1256         int err;
1257
1258         snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1259
1260         pcm = chip->pcm;
1261         card = chip->card;
1262
1263         strcpy(card->mixername, pcm->name);
1264
1265         for (idx = 0; idx < ARRAY_SIZE(snd_ad1848_controls); idx++)
1266                 if ((err = snd_ad1848_add_ctl_elem(chip, &snd_ad1848_controls[idx])) < 0)
1267                         return err;
1268
1269         return 0;
1270 }
1271
1272 EXPORT_SYMBOL(snd_ad1848_mixer);
1273
1274 /*
1275  *  INIT part
1276  */
1277
1278 static int __init alsa_ad1848_init(void)
1279 {
1280         return 0;
1281 }
1282
1283 static void __exit alsa_ad1848_exit(void)
1284 {
1285 }
1286
1287 module_init(alsa_ad1848_init)
1288 module_exit(alsa_ad1848_exit)