Version:  2.0.40 2.2.26 2.4.37 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0

Linux/sound/pci/als300.c

  1 /*
  2  *  als300.c - driver for Avance Logic ALS300/ALS300+ soundcards.
  3  *  Copyright (C) 2005 by Ash Willis <ashwillis@programmer.net>
  4  *
  5  *  This program is free software; you can redistribute it and/or modify
  6  *  it under the terms of the GNU General Public License as published by
  7  *  the Free Software Foundation; either version 2 of the License, or
  8  *  (at your option) any later version.
  9  *
 10  *  This program is distributed in the hope that it will be useful,
 11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 13  *  GNU General Public License for more details.
 14  *
 15  *  You should have received a copy of the GNU General Public License
 16  *  along with this program; if not, write to the Free Software
 17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 18  *
 19  *  TODO
 20  *  4 channel playback for ALS300+
 21  *  gameport
 22  *  mpu401
 23  *  opl3
 24  *
 25  *  NOTES
 26  *  The BLOCK_COUNTER registers for the ALS300(+) return a figure related to
 27  *  the position in the current period, NOT the whole buffer. It is important
 28  *  to know which period we are in so we can calculate the correct pointer.
 29  *  This is why we always use 2 periods. We can then use a flip-flop variable
 30  *  to keep track of what period we are in.
 31  */
 32 
 33 #include <linux/delay.h>
 34 #include <linux/init.h>
 35 #include <linux/module.h>
 36 #include <linux/pci.h>
 37 #include <linux/dma-mapping.h>
 38 #include <linux/interrupt.h>
 39 #include <linux/slab.h>
 40 #include <linux/io.h>
 41 
 42 #include <sound/core.h>
 43 #include <sound/control.h>
 44 #include <sound/initval.h>
 45 #include <sound/pcm.h>
 46 #include <sound/pcm_params.h>
 47 #include <sound/ac97_codec.h>
 48 #include <sound/opl3.h>
 49 
 50 /* snd_als300_set_irq_flag */
 51 #define IRQ_DISABLE             0
 52 #define IRQ_ENABLE              1
 53 
 54 /* I/O port layout */
 55 #define AC97_ACCESS             0x00
 56 #define AC97_READ               0x04
 57 #define AC97_STATUS             0x06
 58 #define   AC97_DATA_AVAIL               (1<<6)
 59 #define   AC97_BUSY                     (1<<7)
 60 #define ALS300_IRQ_STATUS       0x07            /* ALS300 Only */
 61 #define   IRQ_PLAYBACK                  (1<<3)
 62 #define   IRQ_CAPTURE                   (1<<2)
 63 #define GCR_DATA                0x08
 64 #define GCR_INDEX               0x0C
 65 #define ALS300P_DRAM_IRQ_STATUS 0x0D            /* ALS300+ Only */
 66 #define MPU_IRQ_STATUS          0x0E            /* ALS300 Rev. E+, ALS300+ */
 67 #define ALS300P_IRQ_STATUS      0x0F            /* ALS300+ Only */
 68 
 69 /* General Control Registers */
 70 #define PLAYBACK_START          0x80
 71 #define PLAYBACK_END            0x81
 72 #define PLAYBACK_CONTROL        0x82
 73 #define   TRANSFER_START                (1<<16)
 74 #define   FIFO_PAUSE                    (1<<17)
 75 #define RECORD_START            0x83
 76 #define RECORD_END              0x84
 77 #define RECORD_CONTROL          0x85
 78 #define DRAM_WRITE_CONTROL      0x8B
 79 #define   WRITE_TRANS_START             (1<<16)
 80 #define   DRAM_MODE_2                   (1<<17)
 81 #define MISC_CONTROL            0x8C
 82 #define   IRQ_SET_BIT                   (1<<15)
 83 #define   VMUTE_NORMAL                  (1<<20)
 84 #define   MMUTE_NORMAL                  (1<<21)
 85 #define MUS_VOC_VOL             0x8E
 86 #define PLAYBACK_BLOCK_COUNTER  0x9A
 87 #define RECORD_BLOCK_COUNTER    0x9B
 88 
 89 #define DEBUG_PLAY_REC  0
 90 
 91 #if DEBUG_PLAY_REC
 92 #define snd_als300_dbgplay(format, args...) printk(KERN_ERR format, ##args)
 93 #else
 94 #define snd_als300_dbgplay(format, args...)
 95 #endif          
 96 
 97 enum {DEVICE_ALS300, DEVICE_ALS300_PLUS};
 98 
 99 MODULE_AUTHOR("Ash Willis <ashwillis@programmer.net>");
100 MODULE_DESCRIPTION("Avance Logic ALS300");
101 MODULE_LICENSE("GPL");
102 MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS300},{Avance Logic,ALS300+}}");
103 
104 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
105 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
106 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
107 
108 module_param_array(index, int, NULL, 0444);
109 MODULE_PARM_DESC(index, "Index value for ALS300 sound card.");
110 module_param_array(id, charp, NULL, 0444);
111 MODULE_PARM_DESC(id, "ID string for ALS300 sound card.");
112 module_param_array(enable, bool, NULL, 0444);
113 MODULE_PARM_DESC(enable, "Enable ALS300 sound card.");
114 
115 struct snd_als300 {
116         unsigned long port;
117         spinlock_t reg_lock;
118         struct snd_card *card;
119         struct pci_dev *pci;
120 
121         struct snd_pcm *pcm;
122         struct snd_pcm_substream *playback_substream;
123         struct snd_pcm_substream *capture_substream;
124 
125         struct snd_ac97 *ac97;
126         struct snd_opl3 *opl3;
127 
128         struct resource *res_port;
129 
130         int irq;
131 
132         int chip_type; /* ALS300 or ALS300+ */
133 
134         char revision;  
135 };
136 
137 struct snd_als300_substream_data {
138         int period_flipflop;
139         int control_register;
140         int block_counter_register;
141 };
142 
143 static const struct pci_device_id snd_als300_ids[] = {
144         { 0x4005, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300 },
145         { 0x4005, 0x0308, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300_PLUS },
146         { 0, }
147 };
148 
149 MODULE_DEVICE_TABLE(pci, snd_als300_ids);
150 
151 static inline u32 snd_als300_gcr_read(unsigned long port, unsigned short reg)
152 {
153         outb(reg, port+GCR_INDEX);
154         return inl(port+GCR_DATA);
155 }
156 
157 static inline void snd_als300_gcr_write(unsigned long port,
158                                                 unsigned short reg, u32 val)
159 {
160         outb(reg, port+GCR_INDEX);
161         outl(val, port+GCR_DATA);
162 }
163 
164 /* Enable/Disable Interrupts */
165 static void snd_als300_set_irq_flag(struct snd_als300 *chip, int cmd)
166 {
167         u32 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
168 
169         /* boolean XOR check, since old vs. new hardware have
170            directly reversed bit setting for ENABLE and DISABLE.
171            ALS300+ acts like newer versions of ALS300 */
172         if (((chip->revision > 5 || chip->chip_type == DEVICE_ALS300_PLUS) ^
173                                                 (cmd == IRQ_ENABLE)) == 0)
174                 tmp |= IRQ_SET_BIT;
175         else
176                 tmp &= ~IRQ_SET_BIT;
177         snd_als300_gcr_write(chip->port, MISC_CONTROL, tmp);
178 }
179 
180 static int snd_als300_free(struct snd_als300 *chip)
181 {
182         snd_als300_set_irq_flag(chip, IRQ_DISABLE);
183         if (chip->irq >= 0)
184                 free_irq(chip->irq, chip);
185         pci_release_regions(chip->pci);
186         pci_disable_device(chip->pci);
187         kfree(chip);
188         return 0;
189 }
190 
191 static int snd_als300_dev_free(struct snd_device *device)
192 {
193         struct snd_als300 *chip = device->device_data;
194         return snd_als300_free(chip);
195 }
196 
197 static irqreturn_t snd_als300_interrupt(int irq, void *dev_id)
198 {
199         u8 status;
200         struct snd_als300 *chip = dev_id;
201         struct snd_als300_substream_data *data;
202 
203         status = inb(chip->port+ALS300_IRQ_STATUS);
204         if (!status) /* shared IRQ, for different device?? Exit ASAP! */
205                 return IRQ_NONE;
206 
207         /* ACK everything ASAP */
208         outb(status, chip->port+ALS300_IRQ_STATUS);
209         if (status & IRQ_PLAYBACK) {
210                 if (chip->pcm && chip->playback_substream) {
211                         data = chip->playback_substream->runtime->private_data;
212                         data->period_flipflop ^= 1;
213                         snd_pcm_period_elapsed(chip->playback_substream);
214                         snd_als300_dbgplay("IRQ_PLAYBACK\n");
215                 }
216         }
217         if (status & IRQ_CAPTURE) {
218                 if (chip->pcm && chip->capture_substream) {
219                         data = chip->capture_substream->runtime->private_data;
220                         data->period_flipflop ^= 1;
221                         snd_pcm_period_elapsed(chip->capture_substream);
222                         snd_als300_dbgplay("IRQ_CAPTURE\n");
223                 }
224         }
225         return IRQ_HANDLED;
226 }
227 
228 static irqreturn_t snd_als300plus_interrupt(int irq, void *dev_id)
229 {
230         u8 general, mpu, dram;
231         struct snd_als300 *chip = dev_id;
232         struct snd_als300_substream_data *data;
233         
234         general = inb(chip->port+ALS300P_IRQ_STATUS);
235         mpu = inb(chip->port+MPU_IRQ_STATUS);
236         dram = inb(chip->port+ALS300P_DRAM_IRQ_STATUS);
237 
238         /* shared IRQ, for different device?? Exit ASAP! */
239         if ((general == 0) && ((mpu & 0x80) == 0) && ((dram & 0x01) == 0))
240                 return IRQ_NONE;
241 
242         if (general & IRQ_PLAYBACK) {
243                 if (chip->pcm && chip->playback_substream) {
244                         outb(IRQ_PLAYBACK, chip->port+ALS300P_IRQ_STATUS);
245                         data = chip->playback_substream->runtime->private_data;
246                         data->period_flipflop ^= 1;
247                         snd_pcm_period_elapsed(chip->playback_substream);
248                         snd_als300_dbgplay("IRQ_PLAYBACK\n");
249                 }
250         }
251         if (general & IRQ_CAPTURE) {
252                 if (chip->pcm && chip->capture_substream) {
253                         outb(IRQ_CAPTURE, chip->port+ALS300P_IRQ_STATUS);
254                         data = chip->capture_substream->runtime->private_data;
255                         data->period_flipflop ^= 1;
256                         snd_pcm_period_elapsed(chip->capture_substream);
257                         snd_als300_dbgplay("IRQ_CAPTURE\n");
258                 }
259         }
260         /* FIXME: Ack other interrupt types. Not important right now as
261          * those other devices aren't enabled. */
262         return IRQ_HANDLED;
263 }
264 
265 static void snd_als300_remove(struct pci_dev *pci)
266 {
267         snd_card_free(pci_get_drvdata(pci));
268 }
269 
270 static unsigned short snd_als300_ac97_read(struct snd_ac97 *ac97,
271                                                         unsigned short reg)
272 {
273         int i;
274         struct snd_als300 *chip = ac97->private_data;
275 
276         for (i = 0; i < 1000; i++) {
277                 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
278                         break;
279                 udelay(10);
280         }
281         outl((reg << 24) | (1 << 31), chip->port+AC97_ACCESS);
282 
283         for (i = 0; i < 1000; i++) {
284                 if ((inb(chip->port+AC97_STATUS) & (AC97_DATA_AVAIL)) != 0)
285                         break;
286                 udelay(10);
287         }
288         return inw(chip->port+AC97_READ);
289 }
290 
291 static void snd_als300_ac97_write(struct snd_ac97 *ac97,
292                                 unsigned short reg, unsigned short val)
293 {
294         int i;
295         struct snd_als300 *chip = ac97->private_data;
296 
297         for (i = 0; i < 1000; i++) {
298                 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
299                         break;
300                 udelay(10);
301         }
302         outl((reg << 24) | val, chip->port+AC97_ACCESS);
303 }
304 
305 static int snd_als300_ac97(struct snd_als300 *chip)
306 {
307         struct snd_ac97_bus *bus;
308         struct snd_ac97_template ac97;
309         int err;
310         static struct snd_ac97_bus_ops ops = {
311                 .write = snd_als300_ac97_write,
312                 .read = snd_als300_ac97_read,
313         };
314 
315         if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus)) < 0)
316                 return err;
317 
318         memset(&ac97, 0, sizeof(ac97));
319         ac97.private_data = chip;
320 
321         return snd_ac97_mixer(bus, &ac97, &chip->ac97);
322 }
323 
324 /* hardware definition
325  *
326  * In AC97 mode, we always use 48k/16bit/stereo.
327  * Any request to change data type is ignored by
328  * the card when it is running outside of legacy
329  * mode.
330  */
331 static struct snd_pcm_hardware snd_als300_playback_hw =
332 {
333         .info =                 (SNDRV_PCM_INFO_MMAP |
334                                 SNDRV_PCM_INFO_INTERLEAVED |
335                                 SNDRV_PCM_INFO_PAUSE |
336                                 SNDRV_PCM_INFO_MMAP_VALID),
337         .formats =              SNDRV_PCM_FMTBIT_S16,
338         .rates =                SNDRV_PCM_RATE_48000,
339         .rate_min =             48000,
340         .rate_max =             48000,
341         .channels_min =         2,
342         .channels_max =         2,
343         .buffer_bytes_max =     64 * 1024,
344         .period_bytes_min =     64,
345         .period_bytes_max =     32 * 1024,
346         .periods_min =          2,
347         .periods_max =          2,
348 };
349 
350 static struct snd_pcm_hardware snd_als300_capture_hw =
351 {
352         .info =                 (SNDRV_PCM_INFO_MMAP |
353                                 SNDRV_PCM_INFO_INTERLEAVED |
354                                 SNDRV_PCM_INFO_PAUSE |
355                                 SNDRV_PCM_INFO_MMAP_VALID),
356         .formats =              SNDRV_PCM_FMTBIT_S16,
357         .rates =                SNDRV_PCM_RATE_48000,
358         .rate_min =             48000,
359         .rate_max =             48000,
360         .channels_min =         2,
361         .channels_max =         2,
362         .buffer_bytes_max =     64 * 1024,
363         .period_bytes_min =     64,
364         .period_bytes_max =     32 * 1024,
365         .periods_min =          2,
366         .periods_max =          2,
367 };
368 
369 static int snd_als300_playback_open(struct snd_pcm_substream *substream)
370 {
371         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
372         struct snd_pcm_runtime *runtime = substream->runtime;
373         struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
374                                                                 GFP_KERNEL);
375 
376         if (!data)
377                 return -ENOMEM;
378         chip->playback_substream = substream;
379         runtime->hw = snd_als300_playback_hw;
380         runtime->private_data = data;
381         data->control_register = PLAYBACK_CONTROL;
382         data->block_counter_register = PLAYBACK_BLOCK_COUNTER;
383         return 0;
384 }
385 
386 static int snd_als300_playback_close(struct snd_pcm_substream *substream)
387 {
388         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
389         struct snd_als300_substream_data *data;
390 
391         data = substream->runtime->private_data;
392         kfree(data);
393         chip->playback_substream = NULL;
394         snd_pcm_lib_free_pages(substream);
395         return 0;
396 }
397 
398 static int snd_als300_capture_open(struct snd_pcm_substream *substream)
399 {
400         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
401         struct snd_pcm_runtime *runtime = substream->runtime;
402         struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
403                                                                 GFP_KERNEL);
404 
405         if (!data)
406                 return -ENOMEM;
407         chip->capture_substream = substream;
408         runtime->hw = snd_als300_capture_hw;
409         runtime->private_data = data;
410         data->control_register = RECORD_CONTROL;
411         data->block_counter_register = RECORD_BLOCK_COUNTER;
412         return 0;
413 }
414 
415 static int snd_als300_capture_close(struct snd_pcm_substream *substream)
416 {
417         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
418         struct snd_als300_substream_data *data;
419 
420         data = substream->runtime->private_data;
421         kfree(data);
422         chip->capture_substream = NULL;
423         snd_pcm_lib_free_pages(substream);
424         return 0;
425 }
426 
427 static int snd_als300_pcm_hw_params(struct snd_pcm_substream *substream,
428                                     struct snd_pcm_hw_params *hw_params)
429 {
430         return snd_pcm_lib_malloc_pages(substream,
431                                         params_buffer_bytes(hw_params));
432 }
433 
434 static int snd_als300_pcm_hw_free(struct snd_pcm_substream *substream)
435 {
436         return snd_pcm_lib_free_pages(substream);
437 }
438 
439 static int snd_als300_playback_prepare(struct snd_pcm_substream *substream)
440 {
441         u32 tmp;
442         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
443         struct snd_pcm_runtime *runtime = substream->runtime;
444         unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
445         unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
446         
447         spin_lock_irq(&chip->reg_lock);
448         tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
449         tmp &= ~TRANSFER_START;
450 
451         snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n",
452                                                 period_bytes, buffer_bytes);
453         
454         /* set block size */
455         tmp &= 0xffff0000;
456         tmp |= period_bytes - 1;
457         snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL, tmp);
458 
459         /* set dma area */
460         snd_als300_gcr_write(chip->port, PLAYBACK_START,
461                                         runtime->dma_addr);
462         snd_als300_gcr_write(chip->port, PLAYBACK_END,
463                                         runtime->dma_addr + buffer_bytes - 1);
464         spin_unlock_irq(&chip->reg_lock);
465         return 0;
466 }
467 
468 static int snd_als300_capture_prepare(struct snd_pcm_substream *substream)
469 {
470         u32 tmp;
471         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
472         struct snd_pcm_runtime *runtime = substream->runtime;
473         unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
474         unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
475 
476         spin_lock_irq(&chip->reg_lock);
477         tmp = snd_als300_gcr_read(chip->port, RECORD_CONTROL);
478         tmp &= ~TRANSFER_START;
479 
480         snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n", period_bytes,
481                                                         buffer_bytes);
482 
483         /* set block size */
484         tmp &= 0xffff0000;
485         tmp |= period_bytes - 1;
486 
487         /* set dma area */
488         snd_als300_gcr_write(chip->port, RECORD_CONTROL, tmp);
489         snd_als300_gcr_write(chip->port, RECORD_START,
490                                         runtime->dma_addr);
491         snd_als300_gcr_write(chip->port, RECORD_END,
492                                         runtime->dma_addr + buffer_bytes - 1);
493         spin_unlock_irq(&chip->reg_lock);
494         return 0;
495 }
496 
497 static int snd_als300_trigger(struct snd_pcm_substream *substream, int cmd)
498 {
499         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
500         u32 tmp;
501         struct snd_als300_substream_data *data;
502         unsigned short reg;
503         int ret = 0;
504 
505         data = substream->runtime->private_data;
506         reg = data->control_register;
507 
508         spin_lock(&chip->reg_lock);
509         switch (cmd) {
510         case SNDRV_PCM_TRIGGER_START:
511         case SNDRV_PCM_TRIGGER_RESUME:
512                 tmp = snd_als300_gcr_read(chip->port, reg);
513                 data->period_flipflop = 1;
514                 snd_als300_gcr_write(chip->port, reg, tmp | TRANSFER_START);
515                 snd_als300_dbgplay("TRIGGER START\n");
516                 break;
517         case SNDRV_PCM_TRIGGER_STOP:
518         case SNDRV_PCM_TRIGGER_SUSPEND:
519                 tmp = snd_als300_gcr_read(chip->port, reg);
520                 snd_als300_gcr_write(chip->port, reg, tmp & ~TRANSFER_START);
521                 snd_als300_dbgplay("TRIGGER STOP\n");
522                 break;
523         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
524                 tmp = snd_als300_gcr_read(chip->port, reg);
525                 snd_als300_gcr_write(chip->port, reg, tmp | FIFO_PAUSE);
526                 snd_als300_dbgplay("TRIGGER PAUSE\n");
527                 break;
528         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
529                 tmp = snd_als300_gcr_read(chip->port, reg);
530                 snd_als300_gcr_write(chip->port, reg, tmp & ~FIFO_PAUSE);
531                 snd_als300_dbgplay("TRIGGER RELEASE\n");
532                 break;
533         default:
534                 snd_als300_dbgplay("TRIGGER INVALID\n");
535                 ret = -EINVAL;
536         }
537         spin_unlock(&chip->reg_lock);
538         return ret;
539 }
540 
541 static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream)
542 {
543         u16 current_ptr;
544         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
545         struct snd_als300_substream_data *data;
546         unsigned short period_bytes;
547 
548         data = substream->runtime->private_data;
549         period_bytes = snd_pcm_lib_period_bytes(substream);
550         
551         spin_lock(&chip->reg_lock);
552         current_ptr = (u16) snd_als300_gcr_read(chip->port,
553                                         data->block_counter_register) + 4;
554         spin_unlock(&chip->reg_lock);
555         if (current_ptr > period_bytes)
556                 current_ptr = 0;
557         else
558                 current_ptr = period_bytes - current_ptr;
559 
560         if (data->period_flipflop == 0)
561                 current_ptr += period_bytes;
562         snd_als300_dbgplay("Pointer (bytes): %d\n", current_ptr);
563         return bytes_to_frames(substream->runtime, current_ptr);
564 }
565 
566 static struct snd_pcm_ops snd_als300_playback_ops = {
567         .open =         snd_als300_playback_open,
568         .close =        snd_als300_playback_close,
569         .ioctl =        snd_pcm_lib_ioctl,
570         .hw_params =    snd_als300_pcm_hw_params,
571         .hw_free =      snd_als300_pcm_hw_free,
572         .prepare =      snd_als300_playback_prepare,
573         .trigger =      snd_als300_trigger,
574         .pointer =      snd_als300_pointer,
575 };
576 
577 static struct snd_pcm_ops snd_als300_capture_ops = {
578         .open =         snd_als300_capture_open,
579         .close =        snd_als300_capture_close,
580         .ioctl =        snd_pcm_lib_ioctl,
581         .hw_params =    snd_als300_pcm_hw_params,
582         .hw_free =      snd_als300_pcm_hw_free,
583         .prepare =      snd_als300_capture_prepare,
584         .trigger =      snd_als300_trigger,
585         .pointer =      snd_als300_pointer,
586 };
587 
588 static int snd_als300_new_pcm(struct snd_als300 *chip)
589 {
590         struct snd_pcm *pcm;
591         int err;
592 
593         err = snd_pcm_new(chip->card, "ALS300", 0, 1, 1, &pcm);
594         if (err < 0)
595                 return err;
596         pcm->private_data = chip;
597         strcpy(pcm->name, "ALS300");
598         chip->pcm = pcm;
599 
600         /* set operators */
601         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
602                                 &snd_als300_playback_ops);
603         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
604                                 &snd_als300_capture_ops);
605 
606         /* pre-allocation of buffers */
607         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
608         snd_dma_pci_data(chip->pci), 64*1024, 64*1024);
609         return 0;
610 }
611 
612 static void snd_als300_init(struct snd_als300 *chip)
613 {
614         unsigned long flags;
615         u32 tmp;
616         
617         spin_lock_irqsave(&chip->reg_lock, flags);
618         chip->revision = (snd_als300_gcr_read(chip->port, MISC_CONTROL) >> 16)
619                                                                 & 0x0000000F;
620         /* Setup DRAM */
621         tmp = snd_als300_gcr_read(chip->port, DRAM_WRITE_CONTROL);
622         snd_als300_gcr_write(chip->port, DRAM_WRITE_CONTROL,
623                                                 (tmp | DRAM_MODE_2)
624                                                 & ~WRITE_TRANS_START);
625 
626         /* Enable IRQ output */
627         snd_als300_set_irq_flag(chip, IRQ_ENABLE);
628 
629         /* Unmute hardware devices so their outputs get routed to
630          * the onboard mixer */
631         tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
632         snd_als300_gcr_write(chip->port, MISC_CONTROL,
633                         tmp | VMUTE_NORMAL | MMUTE_NORMAL);
634 
635         /* Reset volumes */
636         snd_als300_gcr_write(chip->port, MUS_VOC_VOL, 0);
637 
638         /* Make sure playback transfer is stopped */
639         tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
640         snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL,
641                         tmp & ~TRANSFER_START);
642         spin_unlock_irqrestore(&chip->reg_lock, flags);
643 }
644 
645 static int snd_als300_create(struct snd_card *card,
646                              struct pci_dev *pci, int chip_type,
647                              struct snd_als300 **rchip)
648 {
649         struct snd_als300 *chip;
650         void *irq_handler;
651         int err;
652 
653         static struct snd_device_ops ops = {
654                 .dev_free = snd_als300_dev_free,
655         };
656         *rchip = NULL;
657 
658         if ((err = pci_enable_device(pci)) < 0)
659                 return err;
660 
661         if (pci_set_dma_mask(pci, DMA_BIT_MASK(28)) < 0 ||
662                 pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(28)) < 0) {
663                 dev_err(card->dev, "error setting 28bit DMA mask\n");
664                 pci_disable_device(pci);
665                 return -ENXIO;
666         }
667         pci_set_master(pci);
668 
669         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
670         if (chip == NULL) {
671                 pci_disable_device(pci);
672                 return -ENOMEM;
673         }
674 
675         chip->card = card;
676         chip->pci = pci;
677         chip->irq = -1;
678         chip->chip_type = chip_type;
679         spin_lock_init(&chip->reg_lock);
680 
681         if ((err = pci_request_regions(pci, "ALS300")) < 0) {
682                 kfree(chip);
683                 pci_disable_device(pci);
684                 return err;
685         }
686         chip->port = pci_resource_start(pci, 0);
687 
688         if (chip->chip_type == DEVICE_ALS300_PLUS)
689                 irq_handler = snd_als300plus_interrupt;
690         else
691                 irq_handler = snd_als300_interrupt;
692 
693         if (request_irq(pci->irq, irq_handler, IRQF_SHARED,
694                         KBUILD_MODNAME, chip)) {
695                 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
696                 snd_als300_free(chip);
697                 return -EBUSY;
698         }
699         chip->irq = pci->irq;
700 
701 
702         snd_als300_init(chip);
703 
704         err = snd_als300_ac97(chip);
705         if (err < 0) {
706                 dev_err(card->dev, "Could not create ac97\n");
707                 snd_als300_free(chip);
708                 return err;
709         }
710 
711         if ((err = snd_als300_new_pcm(chip)) < 0) {
712                 dev_err(card->dev, "Could not create PCM\n");
713                 snd_als300_free(chip);
714                 return err;
715         }
716 
717         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
718                                                 chip, &ops)) < 0) {
719                 snd_als300_free(chip);
720                 return err;
721         }
722 
723         *rchip = chip;
724         return 0;
725 }
726 
727 #ifdef CONFIG_PM_SLEEP
728 static int snd_als300_suspend(struct device *dev)
729 {
730         struct snd_card *card = dev_get_drvdata(dev);
731         struct snd_als300 *chip = card->private_data;
732 
733         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
734         snd_pcm_suspend_all(chip->pcm);
735         snd_ac97_suspend(chip->ac97);
736         return 0;
737 }
738 
739 static int snd_als300_resume(struct device *dev)
740 {
741         struct snd_card *card = dev_get_drvdata(dev);
742         struct snd_als300 *chip = card->private_data;
743 
744         snd_als300_init(chip);
745         snd_ac97_resume(chip->ac97);
746 
747         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
748         return 0;
749 }
750 
751 static SIMPLE_DEV_PM_OPS(snd_als300_pm, snd_als300_suspend, snd_als300_resume);
752 #define SND_ALS300_PM_OPS       &snd_als300_pm
753 #else
754 #define SND_ALS300_PM_OPS       NULL
755 #endif
756 
757 static int snd_als300_probe(struct pci_dev *pci,
758                              const struct pci_device_id *pci_id)
759 {
760         static int dev;
761         struct snd_card *card;
762         struct snd_als300 *chip;
763         int err, chip_type;
764 
765         if (dev >= SNDRV_CARDS)
766                 return -ENODEV;
767         if (!enable[dev]) {
768                 dev++;
769                 return -ENOENT;
770         }
771 
772         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
773                            0, &card);
774 
775         if (err < 0)
776                 return err;
777 
778         chip_type = pci_id->driver_data;
779 
780         if ((err = snd_als300_create(card, pci, chip_type, &chip)) < 0) {
781                 snd_card_free(card);
782                 return err;
783         }
784         card->private_data = chip;
785 
786         strcpy(card->driver, "ALS300");
787         if (chip->chip_type == DEVICE_ALS300_PLUS)
788                 /* don't know much about ALS300+ yet
789                  * print revision number for now */
790                 sprintf(card->shortname, "ALS300+ (Rev. %d)", chip->revision);
791         else
792                 sprintf(card->shortname, "ALS300 (Rev. %c)", 'A' +
793                                                         chip->revision - 1);
794         sprintf(card->longname, "%s at 0x%lx irq %i",
795                                 card->shortname, chip->port, chip->irq);
796 
797         if ((err = snd_card_register(card)) < 0) {
798                 snd_card_free(card);
799                 return err;
800         }
801         pci_set_drvdata(pci, card);
802         dev++;
803         return 0;
804 }
805 
806 static struct pci_driver als300_driver = {
807         .name = KBUILD_MODNAME,
808         .id_table = snd_als300_ids,
809         .probe = snd_als300_probe,
810         .remove = snd_als300_remove,
811         .driver = {
812                 .pm = SND_ALS300_PM_OPS,
813         },
814 };
815 
816 module_pci_driver(als300_driver);
817 

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