2 * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
3 * Routines for control of AD1848/AD1847/CS4248
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.
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.
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
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>
28 #include <linux/slab.h>
29 #include <linux/ioport.h>
30 #include <sound/core.h>
31 #include <sound/ad1848.h>
32 #include <sound/control.h>
33 #include <sound/pcm_params.h>
38 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
39 MODULE_DESCRIPTION("Routines for control of AD1848/AD1847/CS4248");
40 MODULE_LICENSE("GPL");
43 #define SNDRV_DEBUG_MCE
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
67 static unsigned int rates[14] = {
68 5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
69 27042, 32000, 33075, 37800, 44100, 48000
72 static snd_pcm_hw_constraint_list_t hw_constraints_rates = {
78 static unsigned char snd_ad1848_original_image[16] =
82 0x9f, /* 02 - la1ic */
83 0x9f, /* 03 - ra1ic */
84 0x9f, /* 04 - la2ic */
85 0x9f, /* 05 - ra2ic */
89 AD1848_AUTOCALIB, /* 09 - ic */
102 void snd_ad1848_out(ad1848_t *chip,
108 for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
110 #ifdef CONFIG_SND_DEBUG
111 if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
112 snd_printk("auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
114 outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
115 outb(chip->image[reg] = value, AD1848P(chip, REG));
118 printk("codec out - reg 0x%x = 0x%x\n", chip->mce_bit | reg, value);
122 static void snd_ad1848_dout(ad1848_t *chip,
123 unsigned char reg, unsigned char value)
127 for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
129 outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
130 outb(value, AD1848P(chip, REG));
134 static unsigned char snd_ad1848_in(ad1848_t *chip, unsigned char reg)
138 for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
140 #ifdef CONFIG_SND_DEBUG
141 if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
142 snd_printk("auto calibration time out - reg = 0x%x\n", reg);
144 outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
146 return inb(AD1848P(chip, REG));
151 static void snd_ad1848_debug(ad1848_t *chip)
153 printk("AD1848 REGS: INDEX = 0x%02x ", inb(AD1848P(chip, REGSEL)));
154 printk(" STATUS = 0x%02x\n", inb(AD1848P(chip, STATUS)));
155 printk(" 0x00: left input = 0x%02x ", snd_ad1848_in(chip, 0x00));
156 printk(" 0x08: playback format = 0x%02x\n", snd_ad1848_in(chip, 0x08));
157 printk(" 0x01: right input = 0x%02x ", snd_ad1848_in(chip, 0x01));
158 printk(" 0x09: iface (CFIG 1) = 0x%02x\n", snd_ad1848_in(chip, 0x09));
159 printk(" 0x02: AUXA left = 0x%02x ", snd_ad1848_in(chip, 0x02));
160 printk(" 0x0a: pin control = 0x%02x\n", snd_ad1848_in(chip, 0x0a));
161 printk(" 0x03: AUXA right = 0x%02x ", snd_ad1848_in(chip, 0x03));
162 printk(" 0x0b: init & status = 0x%02x\n", snd_ad1848_in(chip, 0x0b));
163 printk(" 0x04: AUXB left = 0x%02x ", snd_ad1848_in(chip, 0x04));
164 printk(" 0x0c: revision & mode = 0x%02x\n", snd_ad1848_in(chip, 0x0c));
165 printk(" 0x05: AUXB right = 0x%02x ", snd_ad1848_in(chip, 0x05));
166 printk(" 0x0d: loopback = 0x%02x\n", snd_ad1848_in(chip, 0x0d));
167 printk(" 0x06: left output = 0x%02x ", snd_ad1848_in(chip, 0x06));
168 printk(" 0x0e: data upr count = 0x%02x\n", snd_ad1848_in(chip, 0x0e));
169 printk(" 0x07: right output = 0x%02x ", snd_ad1848_in(chip, 0x07));
170 printk(" 0x0f: data lwr count = 0x%02x\n", snd_ad1848_in(chip, 0x0f));
176 * AD1848 detection / MCE routines
179 static void snd_ad1848_mce_up(ad1848_t *chip)
184 for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
186 #ifdef CONFIG_SND_DEBUG
187 if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
188 snd_printk("mce_up - auto calibration time out (0)\n");
190 spin_lock_irqsave(&chip->reg_lock, flags);
191 chip->mce_bit |= AD1848_MCE;
192 timeout = inb(AD1848P(chip, REGSEL));
194 snd_printk("mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
195 if (!(timeout & AD1848_MCE))
196 outb(chip->mce_bit | (timeout & 0x1f), AD1848P(chip, REGSEL));
197 spin_unlock_irqrestore(&chip->reg_lock, flags);
200 static void snd_ad1848_mce_down(ad1848_t *chip)
206 spin_lock_irqsave(&chip->reg_lock, flags);
207 for (timeout = 5; timeout > 0; timeout--)
208 inb(AD1848P(chip, REGSEL));
209 /* end of cleanup sequence */
210 for (timeout = 12000; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
213 printk("(1) timeout = %i\n", timeout);
215 #ifdef CONFIG_SND_DEBUG
216 if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
217 snd_printk("mce_down [0x%lx] - auto calibration time out (0)\n", AD1848P(chip, REGSEL));
219 chip->mce_bit &= ~AD1848_MCE;
220 timeout = inb(AD1848P(chip, REGSEL));
221 outb(chip->mce_bit | (timeout & 0x1f), AD1848P(chip, REGSEL));
223 snd_printk("mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
224 if ((timeout & AD1848_MCE) == 0) {
225 spin_unlock_irqrestore(&chip->reg_lock, flags);
228 /* calibration process */
230 for (timeout = 500; timeout > 0 && (snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) == 0; timeout--);
231 if ((snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) == 0) {
232 snd_printd("mce_down - auto calibration time out (1)\n");
233 spin_unlock_irqrestore(&chip->reg_lock, flags);
237 printk("(2) timeout = %i, jiffies = %li\n", timeout, jiffies);
240 while (snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) {
241 spin_unlock_irqrestore(&chip->reg_lock, flags);
243 snd_printk("mce_down - auto calibration time out (2)\n");
246 set_current_state(TASK_INTERRUPTIBLE);
247 time = schedule_timeout(time);
248 spin_lock_irqsave(&chip->reg_lock, flags);
251 printk("(3) jiffies = %li\n", jiffies);
254 while (inb(AD1848P(chip, REGSEL)) & AD1848_INIT) {
255 spin_unlock_irqrestore(&chip->reg_lock, flags);
257 snd_printk("mce_down - auto calibration time out (3)\n");
260 set_current_state(TASK_INTERRUPTIBLE);
261 time = schedule_timeout(time);
262 spin_lock_irqsave(&chip->reg_lock, flags);
264 spin_unlock_irqrestore(&chip->reg_lock, flags);
266 printk("(4) jiffies = %li\n", jiffies);
267 snd_printk("mce_down - exit = 0x%x\n", inb(AD1848P(chip, REGSEL)));
271 static unsigned int snd_ad1848_get_count(unsigned char format,
274 switch (format & 0xe0) {
275 case AD1848_LINEAR_16:
279 if (format & AD1848_STEREO)
284 static int snd_ad1848_trigger(ad1848_t *chip, unsigned char what,
285 int channel, int cmd)
290 printk("codec trigger!!! - what = %i, enable = %i, status = 0x%x\n", what, enable, inb(AD1848P(card, STATUS)));
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);
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);
305 snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] &= ~what);
306 chip->mode &= ~AD1848_MODE_RUNNING;
310 spin_unlock(&chip->reg_lock);
318 static unsigned char snd_ad1848_get_rate(unsigned int rate)
322 for (i = 0; i < 14; i++)
323 if (rate == rates[i])
326 return freq_bits[13];
329 static int snd_ad1848_ioctl(snd_pcm_substream_t * substream,
330 unsigned int cmd, void *arg)
332 return snd_pcm_lib_ioctl(substream, cmd, arg);
335 static unsigned char snd_ad1848_get_format(int format, int channels)
337 unsigned char rformat;
339 rformat = AD1848_LINEAR_8;
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;
346 rformat |= AD1848_STEREO;
348 snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
353 static void snd_ad1848_calibrate_mute(ad1848_t *chip, int mute)
358 spin_lock_irqsave(&chip->reg_lock, flags);
359 if (chip->calibrate_mute == mute) {
360 spin_unlock_irqrestore(&chip->reg_lock, flags);
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]);
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);
377 static void snd_ad1848_set_data_format(ad1848_t *chip, snd_pcm_hw_params_t *hw_params)
379 if (hw_params == NULL) {
380 chip->image[AD1848_DATA_FORMAT] = 0x20;
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));
386 // snd_printk(">>> pmode = 0x%x, dfr = 0x%x\n", pstr->mode, chip->image[AD1848_DATA_FORMAT]);
389 static int snd_ad1848_open(ad1848_t *chip, unsigned int mode)
393 down(&chip->open_mutex);
394 if (chip->mode & AD1848_MODE_OPEN) {
395 up(&chip->open_mutex);
398 snd_ad1848_mce_down(chip);
400 #ifdef SNDRV_DEBUG_MCE
401 snd_printk("open: (1)\n");
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 |
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);
413 #ifdef SNDRV_DEBUG_MCE
414 snd_printk("open: (2)\n");
417 snd_ad1848_set_data_format(chip, NULL);
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);
425 #ifdef SNDRV_DEBUG_MCE
426 snd_printk("open: (3)\n");
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);
438 up(&chip->open_mutex);
443 static void snd_ad1848_close(ad1848_t *chip)
447 down(&chip->open_mutex);
449 up(&chip->open_mutex);
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);
460 /* now disable capture & playback */
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);
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);
477 up(&chip->open_mutex);
481 * ok.. exported functions..
484 static int snd_ad1848_playback_trigger(snd_pcm_substream_t * substream,
487 ad1848_t *chip = snd_pcm_substream_chip(substream);
488 return snd_ad1848_trigger(chip, AD1848_PLAYBACK_ENABLE, SNDRV_PCM_STREAM_PLAYBACK, cmd);
491 static int snd_ad1848_capture_trigger(snd_pcm_substream_t * substream,
494 ad1848_t *chip = snd_pcm_substream_chip(substream);
495 return snd_ad1848_trigger(chip, AD1848_CAPTURE_ENABLE, SNDRV_PCM_STREAM_CAPTURE, cmd);
498 static int snd_ad1848_playback_hw_params(snd_pcm_substream_t * substream,
499 snd_pcm_hw_params_t * hw_params)
501 ad1848_t *chip = snd_pcm_substream_chip(substream);
505 if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
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);
518 static int snd_ad1848_playback_hw_free(snd_pcm_substream_t * substream)
520 return snd_pcm_lib_free_pages(substream);
523 static int snd_ad1848_playback_prepare(snd_pcm_substream_t * substream)
525 ad1848_t *chip = snd_pcm_substream_chip(substream);
526 snd_pcm_runtime_t *runtime = substream->runtime;
528 unsigned int size = snd_pcm_lib_buffer_bytes(substream);
529 unsigned int count = snd_pcm_lib_period_bytes(substream);
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);
542 static int snd_ad1848_capture_hw_params(snd_pcm_substream_t * substream,
543 snd_pcm_hw_params_t * hw_params)
545 ad1848_t *chip = snd_pcm_substream_chip(substream);
549 if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
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);
562 static int snd_ad1848_capture_hw_free(snd_pcm_substream_t * substream)
564 return snd_pcm_lib_free_pages(substream);
567 static int snd_ad1848_capture_prepare(snd_pcm_substream_t * substream)
569 ad1848_t *chip = snd_pcm_substream_chip(substream);
570 snd_pcm_runtime_t *runtime = substream->runtime;
572 unsigned int size = snd_pcm_lib_buffer_bytes(substream);
573 unsigned int count = snd_pcm_lib_period_bytes(substream);
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);
586 static irqreturn_t snd_ad1848_interrupt(int irq, void *dev_id, struct pt_regs *regs)
588 ad1848_t *chip = dev_id;
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 */
600 static snd_pcm_uframes_t snd_ad1848_playback_pointer(snd_pcm_substream_t * substream)
602 ad1848_t *chip = snd_pcm_substream_chip(substream);
605 if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_PLAYBACK_ENABLE))
607 ptr = snd_dma_pointer(chip->dma, chip->dma_size);
608 return bytes_to_frames(substream->runtime, ptr);
611 static snd_pcm_uframes_t snd_ad1848_capture_pointer(snd_pcm_substream_t * substream)
613 ad1848_t *chip = snd_pcm_substream_chip(substream);
616 if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_CAPTURE_ENABLE))
618 ptr = snd_dma_pointer(chip->dma, chip->dma_size);
619 return bytes_to_frames(substream->runtime, ptr);
626 static void snd_ad1848_thinkpad_twiddle(ad1848_t *chip, int on) {
630 if (!chip->thinkpad_flag) return;
632 outb(0x1c, AD1848_THINKPAD_CTL_PORT1);
633 tmp = inb(AD1848_THINKPAD_CTL_PORT2);
637 tmp |= AD1848_THINKPAD_CS4248_ENABLE_BIT;
640 tmp &= ~AD1848_THINKPAD_CS4248_ENABLE_BIT;
642 outb(tmp, AD1848_THINKPAD_CTL_PORT2);
647 static int snd_ad1848_suspend(snd_card_t *card, pm_message_t state)
649 ad1848_t *chip = card->pm_private_data;
651 snd_pcm_suspend_all(chip->pcm);
652 /* FIXME: save registers? */
654 if (chip->thinkpad_flag)
655 snd_ad1848_thinkpad_twiddle(chip, 0);
660 static int snd_ad1848_resume(snd_card_t *card)
662 ad1848_t *chip = card->pm_private_data;
664 if (chip->thinkpad_flag)
665 snd_ad1848_thinkpad_twiddle(chip, 1);
667 /* FIXME: restore registers? */
671 #endif /* CONFIG_PM */
673 static int snd_ad1848_probe(ad1848_t * chip)
676 int i, id, rev, ad1847;
680 snd_ad1848_debug(chip);
683 for (i = 0; i < 1000; i++) {
685 if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
688 spin_lock_irqsave(&chip->reg_lock, flags);
689 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
690 snd_ad1848_out(chip, AD1848_LEFT_INPUT, 0xaa);
691 snd_ad1848_out(chip, AD1848_RIGHT_INPUT, 0x45);
692 rev = snd_ad1848_in(chip, AD1848_RIGHT_INPUT);
694 spin_unlock_irqrestore(&chip->reg_lock, flags);
699 if (snd_ad1848_in(chip, AD1848_LEFT_INPUT) == 0xaa && rev == 0x45) {
700 spin_unlock_irqrestore(&chip->reg_lock, flags);
704 spin_unlock_irqrestore(&chip->reg_lock, flags);
708 return -ENODEV; /* no valid device found */
709 if (chip->hardware == AD1848_HW_DETECT) {
711 chip->hardware = AD1848_HW_AD1847;
713 chip->hardware = AD1848_HW_AD1848;
714 rev = snd_ad1848_in(chip, AD1848_MISC_INFO);
716 chip->hardware = AD1848_HW_CS4248;
717 } else if ((rev & 0x0f) == 0x0a) {
718 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x40);
719 for (i = 0; i < 16; ++i) {
720 if (snd_ad1848_in(chip, i) != snd_ad1848_in(chip, i + 16)) {
721 chip->hardware = AD1848_HW_CMI8330;
725 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
729 spin_lock_irqsave(&chip->reg_lock, flags);
730 inb(AD1848P(chip, STATUS)); /* clear any pendings IRQ */
731 outb(0, AD1848P(chip, STATUS));
733 spin_unlock_irqrestore(&chip->reg_lock, flags);
735 chip->image[AD1848_MISC_INFO] = 0x00;
736 chip->image[AD1848_IFACE_CTRL] =
737 (chip->image[AD1848_IFACE_CTRL] & ~AD1848_SINGLE_DMA) | AD1848_SINGLE_DMA;
738 ptr = (unsigned char *) &chip->image;
739 snd_ad1848_mce_down(chip);
740 spin_lock_irqsave(&chip->reg_lock, flags);
741 for (i = 0; i < 16; i++) /* ok.. fill all AD1848 registers */
742 snd_ad1848_out(chip, i, *ptr++);
743 spin_unlock_irqrestore(&chip->reg_lock, flags);
744 snd_ad1848_mce_up(chip);
745 snd_ad1848_mce_down(chip);
746 return 0; /* all things are ok.. */
753 static snd_pcm_hardware_t snd_ad1848_playback =
755 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
756 SNDRV_PCM_INFO_MMAP_VALID),
757 .formats = (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
758 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
759 .rates = SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
764 .buffer_bytes_max = (128*1024),
765 .period_bytes_min = 64,
766 .period_bytes_max = (128*1024),
772 static snd_pcm_hardware_t snd_ad1848_capture =
774 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
775 SNDRV_PCM_INFO_MMAP_VALID),
776 .formats = (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
777 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
778 .rates = SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
783 .buffer_bytes_max = (128*1024),
784 .period_bytes_min = 64,
785 .period_bytes_max = (128*1024),
795 static int snd_ad1848_playback_open(snd_pcm_substream_t * substream)
797 ad1848_t *chip = snd_pcm_substream_chip(substream);
798 snd_pcm_runtime_t *runtime = substream->runtime;
801 if ((err = snd_ad1848_open(chip, AD1848_MODE_PLAY)) < 0)
803 chip->playback_substream = substream;
804 runtime->hw = snd_ad1848_playback;
805 snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
806 snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
807 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
811 static int snd_ad1848_capture_open(snd_pcm_substream_t * substream)
813 ad1848_t *chip = snd_pcm_substream_chip(substream);
814 snd_pcm_runtime_t *runtime = substream->runtime;
817 if ((err = snd_ad1848_open(chip, AD1848_MODE_CAPTURE)) < 0)
819 chip->capture_substream = substream;
820 runtime->hw = snd_ad1848_capture;
821 snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
822 snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
823 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
827 static int snd_ad1848_playback_close(snd_pcm_substream_t * substream)
829 ad1848_t *chip = snd_pcm_substream_chip(substream);
831 chip->mode &= ~AD1848_MODE_PLAY;
832 chip->playback_substream = NULL;
833 snd_ad1848_close(chip);
837 static int snd_ad1848_capture_close(snd_pcm_substream_t * substream)
839 ad1848_t *chip = snd_pcm_substream_chip(substream);
841 chip->mode &= ~AD1848_MODE_CAPTURE;
842 chip->capture_substream = NULL;
843 snd_ad1848_close(chip);
847 static int snd_ad1848_free(ad1848_t *chip)
849 release_and_free_resource(chip->res_port);
851 free_irq(chip->irq, (void *) chip);
852 if (chip->dma >= 0) {
853 snd_dma_disable(chip->dma);
860 static int snd_ad1848_dev_free(snd_device_t *device)
862 ad1848_t *chip = device->device_data;
863 return snd_ad1848_free(chip);
866 static const char *snd_ad1848_chip_id(ad1848_t *chip)
868 switch (chip->hardware) {
869 case AD1848_HW_AD1847: return "AD1847";
870 case AD1848_HW_AD1848: return "AD1848";
871 case AD1848_HW_CS4248: return "CS4248";
872 case AD1848_HW_CMI8330: return "CMI8330/C3D";
873 default: return "???";
877 int snd_ad1848_create(snd_card_t * card,
880 unsigned short hardware,
883 static snd_device_ops_t ops = {
884 .dev_free = snd_ad1848_dev_free,
890 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
893 spin_lock_init(&chip->reg_lock);
894 init_MUTEX(&chip->open_mutex);
899 chip->hardware = hardware;
900 memcpy(&chip->image, &snd_ad1848_original_image, sizeof(snd_ad1848_original_image));
902 if ((chip->res_port = request_region(port, 4, "AD1848")) == NULL) {
903 snd_printk(KERN_ERR "ad1848: can't grab port 0x%lx\n", port);
904 snd_ad1848_free(chip);
907 if (request_irq(irq, snd_ad1848_interrupt, SA_INTERRUPT, "AD1848", (void *) chip)) {
908 snd_printk(KERN_ERR "ad1848: can't grab IRQ %d\n", irq);
909 snd_ad1848_free(chip);
913 if (request_dma(dma, "AD1848")) {
914 snd_printk(KERN_ERR "ad1848: can't grab DMA %d\n", dma);
915 snd_ad1848_free(chip);
920 if (hardware == AD1848_HW_THINKPAD) {
921 chip->thinkpad_flag = 1;
922 chip->hardware = AD1848_HW_DETECT; /* reset */
923 snd_ad1848_thinkpad_twiddle(chip, 1);
924 snd_card_set_isa_pm_callback(card, snd_ad1848_suspend, snd_ad1848_resume, chip);
927 if (snd_ad1848_probe(chip) < 0) {
928 snd_ad1848_free(chip);
932 /* Register device */
933 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
934 snd_ad1848_free(chip);
942 static snd_pcm_ops_t snd_ad1848_playback_ops = {
943 .open = snd_ad1848_playback_open,
944 .close = snd_ad1848_playback_close,
945 .ioctl = snd_ad1848_ioctl,
946 .hw_params = snd_ad1848_playback_hw_params,
947 .hw_free = snd_ad1848_playback_hw_free,
948 .prepare = snd_ad1848_playback_prepare,
949 .trigger = snd_ad1848_playback_trigger,
950 .pointer = snd_ad1848_playback_pointer,
953 static snd_pcm_ops_t snd_ad1848_capture_ops = {
954 .open = snd_ad1848_capture_open,
955 .close = snd_ad1848_capture_close,
956 .ioctl = snd_ad1848_ioctl,
957 .hw_params = snd_ad1848_capture_hw_params,
958 .hw_free = snd_ad1848_capture_hw_free,
959 .prepare = snd_ad1848_capture_prepare,
960 .trigger = snd_ad1848_capture_trigger,
961 .pointer = snd_ad1848_capture_pointer,
964 static void snd_ad1848_pcm_free(snd_pcm_t *pcm)
966 ad1848_t *chip = pcm->private_data;
968 snd_pcm_lib_preallocate_free_for_all(pcm);
971 int snd_ad1848_pcm(ad1848_t *chip, int device, snd_pcm_t **rpcm)
976 if ((err = snd_pcm_new(chip->card, "AD1848", device, 1, 1, &pcm)) < 0)
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);
982 pcm->private_free = snd_ad1848_pcm_free;
983 pcm->private_data = chip;
984 pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
985 strcpy(pcm->name, snd_ad1848_chip_id(chip));
987 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
989 64*1024, chip->dma > 3 ? 128*1024 : 64*1024);
997 const snd_pcm_ops_t *snd_ad1848_get_pcm_ops(int direction)
999 return direction == SNDRV_PCM_STREAM_PLAYBACK ?
1000 &snd_ad1848_playback_ops : &snd_ad1848_capture_ops;
1007 static int snd_ad1848_info_mux(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1009 static char *texts[4] = {
1010 "Line", "Aux", "Mic", "Mix"
1013 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1015 uinfo->value.enumerated.items = 4;
1016 if (uinfo->value.enumerated.item > 3)
1017 uinfo->value.enumerated.item = 3;
1018 strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1022 static int snd_ad1848_get_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1024 ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1025 unsigned long flags;
1027 spin_lock_irqsave(&chip->reg_lock, flags);
1028 ucontrol->value.enumerated.item[0] = (chip->image[AD1848_LEFT_INPUT] & AD1848_MIXS_ALL) >> 6;
1029 ucontrol->value.enumerated.item[1] = (chip->image[AD1848_RIGHT_INPUT] & AD1848_MIXS_ALL) >> 6;
1030 spin_unlock_irqrestore(&chip->reg_lock, flags);
1034 static int snd_ad1848_put_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1036 ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1037 unsigned long flags;
1038 unsigned short left, right;
1041 if (ucontrol->value.enumerated.item[0] > 3 ||
1042 ucontrol->value.enumerated.item[1] > 3)
1044 left = ucontrol->value.enumerated.item[0] << 6;
1045 right = ucontrol->value.enumerated.item[1] << 6;
1046 spin_lock_irqsave(&chip->reg_lock, flags);
1047 left = (chip->image[AD1848_LEFT_INPUT] & ~AD1848_MIXS_ALL) | left;
1048 right = (chip->image[AD1848_RIGHT_INPUT] & ~AD1848_MIXS_ALL) | right;
1049 change = left != chip->image[AD1848_LEFT_INPUT] ||
1050 right != chip->image[AD1848_RIGHT_INPUT];
1051 snd_ad1848_out(chip, AD1848_LEFT_INPUT, left);
1052 snd_ad1848_out(chip, AD1848_RIGHT_INPUT, right);
1053 spin_unlock_irqrestore(&chip->reg_lock, flags);
1057 static int snd_ad1848_info_single(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1059 int mask = (kcontrol->private_value >> 16) & 0xff;
1061 uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1063 uinfo->value.integer.min = 0;
1064 uinfo->value.integer.max = mask;
1068 static int snd_ad1848_get_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1070 ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1071 unsigned long flags;
1072 int reg = kcontrol->private_value & 0xff;
1073 int shift = (kcontrol->private_value >> 8) & 0xff;
1074 int mask = (kcontrol->private_value >> 16) & 0xff;
1075 int invert = (kcontrol->private_value >> 24) & 0xff;
1077 spin_lock_irqsave(&chip->reg_lock, flags);
1078 ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1079 spin_unlock_irqrestore(&chip->reg_lock, flags);
1081 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1085 static int snd_ad1848_put_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1087 ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1088 unsigned long flags;
1089 int reg = kcontrol->private_value & 0xff;
1090 int shift = (kcontrol->private_value >> 8) & 0xff;
1091 int mask = (kcontrol->private_value >> 16) & 0xff;
1092 int invert = (kcontrol->private_value >> 24) & 0xff;
1096 val = (ucontrol->value.integer.value[0] & mask);
1100 spin_lock_irqsave(&chip->reg_lock, flags);
1101 val = (chip->image[reg] & ~(mask << shift)) | val;
1102 change = val != chip->image[reg];
1103 snd_ad1848_out(chip, reg, val);
1104 spin_unlock_irqrestore(&chip->reg_lock, flags);
1108 static int snd_ad1848_info_double(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1110 int mask = (kcontrol->private_value >> 24) & 0xff;
1112 uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1114 uinfo->value.integer.min = 0;
1115 uinfo->value.integer.max = mask;
1119 static int snd_ad1848_get_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1121 ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1122 unsigned long flags;
1123 int left_reg = kcontrol->private_value & 0xff;
1124 int right_reg = (kcontrol->private_value >> 8) & 0xff;
1125 int shift_left = (kcontrol->private_value >> 16) & 0x07;
1126 int shift_right = (kcontrol->private_value >> 19) & 0x07;
1127 int mask = (kcontrol->private_value >> 24) & 0xff;
1128 int invert = (kcontrol->private_value >> 22) & 1;
1130 spin_lock_irqsave(&chip->reg_lock, flags);
1131 ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
1132 ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
1133 spin_unlock_irqrestore(&chip->reg_lock, flags);
1135 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1136 ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1141 static int snd_ad1848_put_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1143 ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1144 unsigned long flags;
1145 int left_reg = kcontrol->private_value & 0xff;
1146 int right_reg = (kcontrol->private_value >> 8) & 0xff;
1147 int shift_left = (kcontrol->private_value >> 16) & 0x07;
1148 int shift_right = (kcontrol->private_value >> 19) & 0x07;
1149 int mask = (kcontrol->private_value >> 24) & 0xff;
1150 int invert = (kcontrol->private_value >> 22) & 1;
1152 unsigned short val1, val2;
1154 val1 = ucontrol->value.integer.value[0] & mask;
1155 val2 = ucontrol->value.integer.value[1] & mask;
1160 val1 <<= shift_left;
1161 val2 <<= shift_right;
1162 spin_lock_irqsave(&chip->reg_lock, flags);
1163 if (left_reg != right_reg) {
1164 val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1165 val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1166 change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
1167 snd_ad1848_out(chip, left_reg, val1);
1168 snd_ad1848_out(chip, right_reg, val2);
1170 val1 = (chip->image[left_reg] & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
1171 change = val1 != chip->image[left_reg];
1172 snd_ad1848_out(chip, left_reg, val1);
1174 spin_unlock_irqrestore(&chip->reg_lock, flags);
1180 int snd_ad1848_add_ctl(ad1848_t *chip, const char *name, int index, int type, unsigned long value)
1182 static snd_kcontrol_new_t newctls[] = {
1183 [AD1848_MIX_SINGLE] = {
1184 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1185 .info = snd_ad1848_info_single,
1186 .get = snd_ad1848_get_single,
1187 .put = snd_ad1848_put_single,
1189 [AD1848_MIX_DOUBLE] = {
1190 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1191 .info = snd_ad1848_info_double,
1192 .get = snd_ad1848_get_double,
1193 .put = snd_ad1848_put_double,
1195 [AD1848_MIX_CAPTURE] = {
1196 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1197 .info = snd_ad1848_info_mux,
1198 .get = snd_ad1848_get_mux,
1199 .put = snd_ad1848_put_mux,
1202 snd_kcontrol_t *ctl;
1205 ctl = snd_ctl_new1(&newctls[type], chip);
1208 strlcpy(ctl->id.name, name, sizeof(ctl->id.name));
1209 ctl->id.index = index;
1210 ctl->private_value = value;
1211 if ((err = snd_ctl_add(chip->card, ctl)) < 0) {
1212 snd_ctl_free_one(ctl);
1219 static struct ad1848_mix_elem snd_ad1848_controls[] = {
1220 AD1848_DOUBLE("PCM Playback Switch", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 7, 7, 1, 1),
1221 AD1848_DOUBLE("PCM Playback Volume", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 0, 0, 63, 1),
1222 AD1848_DOUBLE("Aux Playback Switch", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1223 AD1848_DOUBLE("Aux Playback Volume", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1224 AD1848_DOUBLE("Aux Playback Switch", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1225 AD1848_DOUBLE("Aux Playback Volume", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1226 AD1848_DOUBLE("Capture Volume", 0, AD1848_LEFT_INPUT, AD1848_RIGHT_INPUT, 0, 0, 15, 0),
1228 .name = "Capture Source",
1229 .type = AD1848_MIX_CAPTURE,
1231 AD1848_SINGLE("Loopback Capture Switch", 0, AD1848_LOOPBACK, 0, 1, 0),
1232 AD1848_SINGLE("Loopback Capture Volume", 0, AD1848_LOOPBACK, 1, 63, 0)
1235 int snd_ad1848_mixer(ad1848_t *chip)
1242 snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1247 strcpy(card->mixername, pcm->name);
1249 for (idx = 0; idx < ARRAY_SIZE(snd_ad1848_controls); idx++)
1250 if ((err = snd_ad1848_add_ctl_elem(chip, &snd_ad1848_controls[idx])) < 0)
1256 EXPORT_SYMBOL(snd_ad1848_out);
1257 EXPORT_SYMBOL(snd_ad1848_create);
1258 EXPORT_SYMBOL(snd_ad1848_pcm);
1259 EXPORT_SYMBOL(snd_ad1848_get_pcm_ops);
1260 EXPORT_SYMBOL(snd_ad1848_mixer);
1261 EXPORT_SYMBOL(snd_ad1848_add_ctl);
1267 static int __init alsa_ad1848_init(void)
1272 static void __exit alsa_ad1848_exit(void)
1276 module_init(alsa_ad1848_init)
1277 module_exit(alsa_ad1848_exit)