dma-mapping: replace all DMA_28BIT_MASK macro with DMA_BIT_MASK(28)
[linux-2.6.git] / 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/moduleparam.h>
36 #include <linux/pci.h>
37 #include <linux/dma-mapping.h>
38 #include <linux/interrupt.h>
39 #include <linux/slab.h>
40
41 #include <asm/io.h>
42
43 #include <sound/core.h>
44 #include <sound/control.h>
45 #include <sound/initval.h>
46 #include <sound/pcm.h>
47 #include <sound/pcm_params.h>
48 #include <sound/ac97_codec.h>
49 #include <sound/opl3.h>
50
51 /* snd_als300_set_irq_flag */
52 #define IRQ_DISABLE             0
53 #define IRQ_ENABLE              1
54
55 /* I/O port layout */
56 #define AC97_ACCESS             0x00
57 #define AC97_READ               0x04
58 #define AC97_STATUS             0x06
59 #define   AC97_DATA_AVAIL               (1<<6)
60 #define   AC97_BUSY                     (1<<7)
61 #define ALS300_IRQ_STATUS       0x07            /* ALS300 Only */
62 #define   IRQ_PLAYBACK                  (1<<3)
63 #define   IRQ_CAPTURE                   (1<<2)
64 #define GCR_DATA                0x08
65 #define GCR_INDEX               0x0C
66 #define ALS300P_DRAM_IRQ_STATUS 0x0D            /* ALS300+ Only */
67 #define MPU_IRQ_STATUS          0x0E            /* ALS300 Rev. E+, ALS300+ */
68 #define ALS300P_IRQ_STATUS      0x0F            /* ALS300+ Only */
69
70 /* General Control Registers */
71 #define PLAYBACK_START          0x80
72 #define PLAYBACK_END            0x81
73 #define PLAYBACK_CONTROL        0x82
74 #define   TRANSFER_START                (1<<16)
75 #define   FIFO_PAUSE                    (1<<17)
76 #define RECORD_START            0x83
77 #define RECORD_END              0x84
78 #define RECORD_CONTROL          0x85
79 #define DRAM_WRITE_CONTROL      0x8B
80 #define   WRITE_TRANS_START             (1<<16)
81 #define   DRAM_MODE_2                   (1<<17)
82 #define MISC_CONTROL            0x8C
83 #define   IRQ_SET_BIT                   (1<<15)
84 #define   VMUTE_NORMAL                  (1<<20)
85 #define   MMUTE_NORMAL                  (1<<21)
86 #define MUS_VOC_VOL             0x8E
87 #define PLAYBACK_BLOCK_COUNTER  0x9A
88 #define RECORD_BLOCK_COUNTER    0x9B
89
90 #define DEBUG_CALLS     0
91 #define DEBUG_PLAY_REC  0
92
93 #if DEBUG_CALLS
94 #define snd_als300_dbgcalls(format, args...) printk(KERN_DEBUG format, ##args)
95 #define snd_als300_dbgcallenter() printk(KERN_ERR "--> %s\n", __func__)
96 #define snd_als300_dbgcallleave() printk(KERN_ERR "<-- %s\n", __func__)
97 #else
98 #define snd_als300_dbgcalls(format, args...)
99 #define snd_als300_dbgcallenter()
100 #define snd_als300_dbgcallleave()
101 #endif
102
103 #if DEBUG_PLAY_REC
104 #define snd_als300_dbgplay(format, args...) printk(KERN_ERR format, ##args)
105 #else
106 #define snd_als300_dbgplay(format, args...)
107 #endif          
108
109 enum {DEVICE_ALS300, DEVICE_ALS300_PLUS};
110
111 MODULE_AUTHOR("Ash Willis <ashwillis@programmer.net>");
112 MODULE_DESCRIPTION("Avance Logic ALS300");
113 MODULE_LICENSE("GPL");
114 MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS300},{Avance Logic,ALS300+}}");
115
116 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
117 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
118 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
119
120 struct snd_als300 {
121         unsigned long port;
122         spinlock_t reg_lock;
123         struct snd_card *card;
124         struct pci_dev *pci;
125
126         struct snd_pcm *pcm;
127         struct snd_pcm_substream *playback_substream;
128         struct snd_pcm_substream *capture_substream;
129
130         struct snd_ac97 *ac97;
131         struct snd_opl3 *opl3;
132
133         struct resource *res_port;
134
135         int irq;
136
137         int chip_type; /* ALS300 or ALS300+ */
138
139         char revision;  
140 };
141
142 struct snd_als300_substream_data {
143         int period_flipflop;
144         int control_register;
145         int block_counter_register;
146 };
147
148 static struct pci_device_id snd_als300_ids[] = {
149         { 0x4005, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300 },
150         { 0x4005, 0x0308, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300_PLUS },
151         { 0, }
152 };
153
154 MODULE_DEVICE_TABLE(pci, snd_als300_ids);
155
156 static inline u32 snd_als300_gcr_read(unsigned long port, unsigned short reg)
157 {
158         outb(reg, port+GCR_INDEX);
159         return inl(port+GCR_DATA);
160 }
161
162 static inline void snd_als300_gcr_write(unsigned long port,
163                                                 unsigned short reg, u32 val)
164 {
165         outb(reg, port+GCR_INDEX);
166         outl(val, port+GCR_DATA);
167 }
168
169 /* Enable/Disable Interrupts */
170 static void snd_als300_set_irq_flag(struct snd_als300 *chip, int cmd)
171 {
172         u32 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
173         snd_als300_dbgcallenter();
174
175         /* boolean XOR check, since old vs. new hardware have
176            directly reversed bit setting for ENABLE and DISABLE.
177            ALS300+ acts like newer versions of ALS300 */
178         if (((chip->revision > 5 || chip->chip_type == DEVICE_ALS300_PLUS) ^
179                                                 (cmd == IRQ_ENABLE)) == 0)
180                 tmp |= IRQ_SET_BIT;
181         else
182                 tmp &= ~IRQ_SET_BIT;
183         snd_als300_gcr_write(chip->port, MISC_CONTROL, tmp);
184         snd_als300_dbgcallleave();
185 }
186
187 static int snd_als300_free(struct snd_als300 *chip)
188 {
189         snd_als300_dbgcallenter();
190         snd_als300_set_irq_flag(chip, IRQ_DISABLE);
191         if (chip->irq >= 0)
192                 free_irq(chip->irq, chip);
193         pci_release_regions(chip->pci);
194         pci_disable_device(chip->pci);
195         kfree(chip);
196         snd_als300_dbgcallleave();
197         return 0;
198 }
199
200 static int snd_als300_dev_free(struct snd_device *device)
201 {
202         struct snd_als300 *chip = device->device_data;
203         return snd_als300_free(chip);
204 }
205
206 static irqreturn_t snd_als300_interrupt(int irq, void *dev_id)
207 {
208         u8 status;
209         struct snd_als300 *chip = dev_id;
210         struct snd_als300_substream_data *data;
211
212         status = inb(chip->port+ALS300_IRQ_STATUS);
213         if (!status) /* shared IRQ, for different device?? Exit ASAP! */
214                 return IRQ_NONE;
215
216         /* ACK everything ASAP */
217         outb(status, chip->port+ALS300_IRQ_STATUS);
218         if (status & IRQ_PLAYBACK) {
219                 if (chip->pcm && chip->playback_substream) {
220                         data = chip->playback_substream->runtime->private_data;
221                         data->period_flipflop ^= 1;
222                         snd_pcm_period_elapsed(chip->playback_substream);
223                         snd_als300_dbgplay("IRQ_PLAYBACK\n");
224                 }
225         }
226         if (status & IRQ_CAPTURE) {
227                 if (chip->pcm && chip->capture_substream) {
228                         data = chip->capture_substream->runtime->private_data;
229                         data->period_flipflop ^= 1;
230                         snd_pcm_period_elapsed(chip->capture_substream);
231                         snd_als300_dbgplay("IRQ_CAPTURE\n");
232                 }
233         }
234         return IRQ_HANDLED;
235 }
236
237 static irqreturn_t snd_als300plus_interrupt(int irq, void *dev_id)
238 {
239         u8 general, mpu, dram;
240         struct snd_als300 *chip = dev_id;
241         struct snd_als300_substream_data *data;
242         
243         general = inb(chip->port+ALS300P_IRQ_STATUS);
244         mpu = inb(chip->port+MPU_IRQ_STATUS);
245         dram = inb(chip->port+ALS300P_DRAM_IRQ_STATUS);
246
247         /* shared IRQ, for different device?? Exit ASAP! */
248         if ((general == 0) && ((mpu & 0x80) == 0) && ((dram & 0x01) == 0))
249                 return IRQ_NONE;
250
251         if (general & IRQ_PLAYBACK) {
252                 if (chip->pcm && chip->playback_substream) {
253                         outb(IRQ_PLAYBACK, chip->port+ALS300P_IRQ_STATUS);
254                         data = chip->playback_substream->runtime->private_data;
255                         data->period_flipflop ^= 1;
256                         snd_pcm_period_elapsed(chip->playback_substream);
257                         snd_als300_dbgplay("IRQ_PLAYBACK\n");
258                 }
259         }
260         if (general & IRQ_CAPTURE) {
261                 if (chip->pcm && chip->capture_substream) {
262                         outb(IRQ_CAPTURE, chip->port+ALS300P_IRQ_STATUS);
263                         data = chip->capture_substream->runtime->private_data;
264                         data->period_flipflop ^= 1;
265                         snd_pcm_period_elapsed(chip->capture_substream);
266                         snd_als300_dbgplay("IRQ_CAPTURE\n");
267                 }
268         }
269         /* FIXME: Ack other interrupt types. Not important right now as
270          * those other devices aren't enabled. */
271         return IRQ_HANDLED;
272 }
273
274 static void __devexit snd_als300_remove(struct pci_dev *pci)
275 {
276         snd_als300_dbgcallenter();
277         snd_card_free(pci_get_drvdata(pci));
278         pci_set_drvdata(pci, NULL);
279         snd_als300_dbgcallleave();
280 }
281
282 static unsigned short snd_als300_ac97_read(struct snd_ac97 *ac97,
283                                                         unsigned short reg)
284 {
285         int i;
286         struct snd_als300 *chip = ac97->private_data;
287
288         for (i = 0; i < 1000; i++) {
289                 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
290                         break;
291                 udelay(10);
292         }
293         outl((reg << 24) | (1 << 31), chip->port+AC97_ACCESS);
294
295         for (i = 0; i < 1000; i++) {
296                 if ((inb(chip->port+AC97_STATUS) & (AC97_DATA_AVAIL)) != 0)
297                         break;
298                 udelay(10);
299         }
300         return inw(chip->port+AC97_READ);
301 }
302
303 static void snd_als300_ac97_write(struct snd_ac97 *ac97,
304                                 unsigned short reg, unsigned short val)
305 {
306         int i;
307         struct snd_als300 *chip = ac97->private_data;
308
309         for (i = 0; i < 1000; i++) {
310                 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
311                         break;
312                 udelay(10);
313         }
314         outl((reg << 24) | val, chip->port+AC97_ACCESS);
315 }
316
317 static int snd_als300_ac97(struct snd_als300 *chip)
318 {
319         struct snd_ac97_bus *bus;
320         struct snd_ac97_template ac97;
321         int err;
322         static struct snd_ac97_bus_ops ops = {
323                 .write = snd_als300_ac97_write,
324                 .read = snd_als300_ac97_read,
325         };
326
327         snd_als300_dbgcallenter();
328         if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus)) < 0)
329                 return err;
330
331         memset(&ac97, 0, sizeof(ac97));
332         ac97.private_data = chip;
333
334         snd_als300_dbgcallleave();
335         return snd_ac97_mixer(bus, &ac97, &chip->ac97);
336 }
337
338 /* hardware definition
339  *
340  * In AC97 mode, we always use 48k/16bit/stereo.
341  * Any request to change data type is ignored by
342  * the card when it is running outside of legacy
343  * mode.
344  */
345 static struct snd_pcm_hardware snd_als300_playback_hw =
346 {
347         .info =                 (SNDRV_PCM_INFO_MMAP |
348                                 SNDRV_PCM_INFO_INTERLEAVED |
349                                 SNDRV_PCM_INFO_PAUSE |
350                                 SNDRV_PCM_INFO_MMAP_VALID),
351         .formats =              SNDRV_PCM_FMTBIT_S16,
352         .rates =                SNDRV_PCM_RATE_48000,
353         .rate_min =             48000,
354         .rate_max =             48000,
355         .channels_min =         2,
356         .channels_max =         2,
357         .buffer_bytes_max =     64 * 1024,
358         .period_bytes_min =     64,
359         .period_bytes_max =     32 * 1024,
360         .periods_min =          2,
361         .periods_max =          2,
362 };
363
364 static struct snd_pcm_hardware snd_als300_capture_hw =
365 {
366         .info =                 (SNDRV_PCM_INFO_MMAP |
367                                 SNDRV_PCM_INFO_INTERLEAVED |
368                                 SNDRV_PCM_INFO_PAUSE |
369                                 SNDRV_PCM_INFO_MMAP_VALID),
370         .formats =              SNDRV_PCM_FMTBIT_S16,
371         .rates =                SNDRV_PCM_RATE_48000,
372         .rate_min =             48000,
373         .rate_max =             48000,
374         .channels_min =         2,
375         .channels_max =         2,
376         .buffer_bytes_max =     64 * 1024,
377         .period_bytes_min =     64,
378         .period_bytes_max =     32 * 1024,
379         .periods_min =          2,
380         .periods_max =          2,
381 };
382
383 static int snd_als300_playback_open(struct snd_pcm_substream *substream)
384 {
385         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
386         struct snd_pcm_runtime *runtime = substream->runtime;
387         struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
388                                                                 GFP_KERNEL);
389
390         snd_als300_dbgcallenter();
391         chip->playback_substream = substream;
392         runtime->hw = snd_als300_playback_hw;
393         runtime->private_data = data;
394         data->control_register = PLAYBACK_CONTROL;
395         data->block_counter_register = PLAYBACK_BLOCK_COUNTER;
396         snd_als300_dbgcallleave();
397         return 0;
398 }
399
400 static int snd_als300_playback_close(struct snd_pcm_substream *substream)
401 {
402         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
403         struct snd_als300_substream_data *data;
404
405         data = substream->runtime->private_data;
406         snd_als300_dbgcallenter();
407         kfree(data);
408         chip->playback_substream = NULL;
409         snd_pcm_lib_free_pages(substream);
410         snd_als300_dbgcallleave();
411         return 0;
412 }
413
414 static int snd_als300_capture_open(struct snd_pcm_substream *substream)
415 {
416         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
417         struct snd_pcm_runtime *runtime = substream->runtime;
418         struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
419                                                                 GFP_KERNEL);
420
421         snd_als300_dbgcallenter();
422         chip->capture_substream = substream;
423         runtime->hw = snd_als300_capture_hw;
424         runtime->private_data = data;
425         data->control_register = RECORD_CONTROL;
426         data->block_counter_register = RECORD_BLOCK_COUNTER;
427         snd_als300_dbgcallleave();
428         return 0;
429 }
430
431 static int snd_als300_capture_close(struct snd_pcm_substream *substream)
432 {
433         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
434         struct snd_als300_substream_data *data;
435
436         data = substream->runtime->private_data;
437         snd_als300_dbgcallenter();
438         kfree(data);
439         chip->capture_substream = NULL;
440         snd_pcm_lib_free_pages(substream);
441         snd_als300_dbgcallleave();
442         return 0;
443 }
444
445 static int snd_als300_pcm_hw_params(struct snd_pcm_substream *substream,
446                                     struct snd_pcm_hw_params *hw_params)
447 {
448         return snd_pcm_lib_malloc_pages(substream,
449                                         params_buffer_bytes(hw_params));
450 }
451
452 static int snd_als300_pcm_hw_free(struct snd_pcm_substream *substream)
453 {
454         return snd_pcm_lib_free_pages(substream);
455 }
456
457 static int snd_als300_playback_prepare(struct snd_pcm_substream *substream)
458 {
459         u32 tmp;
460         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
461         struct snd_pcm_runtime *runtime = substream->runtime;
462         unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
463         unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
464         
465         snd_als300_dbgcallenter();
466         spin_lock_irq(&chip->reg_lock);
467         tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
468         tmp &= ~TRANSFER_START;
469
470         snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n",
471                                                 period_bytes, buffer_bytes);
472         
473         /* set block size */
474         tmp &= 0xffff0000;
475         tmp |= period_bytes - 1;
476         snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL, tmp);
477
478         /* set dma area */
479         snd_als300_gcr_write(chip->port, PLAYBACK_START,
480                                         runtime->dma_addr);
481         snd_als300_gcr_write(chip->port, PLAYBACK_END,
482                                         runtime->dma_addr + buffer_bytes - 1);
483         spin_unlock_irq(&chip->reg_lock);
484         snd_als300_dbgcallleave();
485         return 0;
486 }
487
488 static int snd_als300_capture_prepare(struct snd_pcm_substream *substream)
489 {
490         u32 tmp;
491         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
492         struct snd_pcm_runtime *runtime = substream->runtime;
493         unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
494         unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
495
496         snd_als300_dbgcallenter();
497         spin_lock_irq(&chip->reg_lock);
498         tmp = snd_als300_gcr_read(chip->port, RECORD_CONTROL);
499         tmp &= ~TRANSFER_START;
500
501         snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n", period_bytes,
502                                                         buffer_bytes);
503
504         /* set block size */
505         tmp &= 0xffff0000;
506         tmp |= period_bytes - 1;
507
508         /* set dma area */
509         snd_als300_gcr_write(chip->port, RECORD_CONTROL, tmp);
510         snd_als300_gcr_write(chip->port, RECORD_START,
511                                         runtime->dma_addr);
512         snd_als300_gcr_write(chip->port, RECORD_END,
513                                         runtime->dma_addr + buffer_bytes - 1);
514         spin_unlock_irq(&chip->reg_lock);
515         snd_als300_dbgcallleave();
516         return 0;
517 }
518
519 static int snd_als300_trigger(struct snd_pcm_substream *substream, int cmd)
520 {
521         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
522         u32 tmp;
523         struct snd_als300_substream_data *data;
524         unsigned short reg;
525         int ret = 0;
526
527         data = substream->runtime->private_data;
528         reg = data->control_register;
529
530         snd_als300_dbgcallenter();
531         spin_lock(&chip->reg_lock);
532         switch (cmd) {
533         case SNDRV_PCM_TRIGGER_START:
534         case SNDRV_PCM_TRIGGER_RESUME:
535                 tmp = snd_als300_gcr_read(chip->port, reg);
536                 data->period_flipflop = 1;
537                 snd_als300_gcr_write(chip->port, reg, tmp | TRANSFER_START);
538                 snd_als300_dbgplay("TRIGGER START\n");
539                 break;
540         case SNDRV_PCM_TRIGGER_STOP:
541         case SNDRV_PCM_TRIGGER_SUSPEND:
542                 tmp = snd_als300_gcr_read(chip->port, reg);
543                 snd_als300_gcr_write(chip->port, reg, tmp & ~TRANSFER_START);
544                 snd_als300_dbgplay("TRIGGER STOP\n");
545                 break;
546         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
547                 tmp = snd_als300_gcr_read(chip->port, reg);
548                 snd_als300_gcr_write(chip->port, reg, tmp | FIFO_PAUSE);
549                 snd_als300_dbgplay("TRIGGER PAUSE\n");
550                 break;
551         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
552                 tmp = snd_als300_gcr_read(chip->port, reg);
553                 snd_als300_gcr_write(chip->port, reg, tmp & ~FIFO_PAUSE);
554                 snd_als300_dbgplay("TRIGGER RELEASE\n");
555                 break;
556         default:
557                 snd_als300_dbgplay("TRIGGER INVALID\n");
558                 ret = -EINVAL;
559         }
560         spin_unlock(&chip->reg_lock);
561         snd_als300_dbgcallleave();
562         return ret;
563 }
564
565 static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream)
566 {
567         u16 current_ptr;
568         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
569         struct snd_als300_substream_data *data;
570         unsigned short period_bytes;
571
572         data = substream->runtime->private_data;
573         period_bytes = snd_pcm_lib_period_bytes(substream);
574         
575         snd_als300_dbgcallenter();
576         spin_lock(&chip->reg_lock);
577         current_ptr = (u16) snd_als300_gcr_read(chip->port,
578                                         data->block_counter_register) + 4;
579         spin_unlock(&chip->reg_lock);
580         if (current_ptr > period_bytes)
581                 current_ptr = 0;
582         else
583                 current_ptr = period_bytes - current_ptr;
584
585         if (data->period_flipflop == 0)
586                 current_ptr += period_bytes;
587         snd_als300_dbgplay("Pointer (bytes): %d\n", current_ptr);
588         snd_als300_dbgcallleave();
589         return bytes_to_frames(substream->runtime, current_ptr);
590 }
591
592 static struct snd_pcm_ops snd_als300_playback_ops = {
593         .open =         snd_als300_playback_open,
594         .close =        snd_als300_playback_close,
595         .ioctl =        snd_pcm_lib_ioctl,
596         .hw_params =    snd_als300_pcm_hw_params,
597         .hw_free =      snd_als300_pcm_hw_free,
598         .prepare =      snd_als300_playback_prepare,
599         .trigger =      snd_als300_trigger,
600         .pointer =      snd_als300_pointer,
601 };
602
603 static struct snd_pcm_ops snd_als300_capture_ops = {
604         .open =         snd_als300_capture_open,
605         .close =        snd_als300_capture_close,
606         .ioctl =        snd_pcm_lib_ioctl,
607         .hw_params =    snd_als300_pcm_hw_params,
608         .hw_free =      snd_als300_pcm_hw_free,
609         .prepare =      snd_als300_capture_prepare,
610         .trigger =      snd_als300_trigger,
611         .pointer =      snd_als300_pointer,
612 };
613
614 static int __devinit snd_als300_new_pcm(struct snd_als300 *chip)
615 {
616         struct snd_pcm *pcm;
617         int err;
618
619         snd_als300_dbgcallenter();
620         err = snd_pcm_new(chip->card, "ALS300", 0, 1, 1, &pcm);
621         if (err < 0)
622                 return err;
623         pcm->private_data = chip;
624         strcpy(pcm->name, "ALS300");
625         chip->pcm = pcm;
626
627         /* set operators */
628         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
629                                 &snd_als300_playback_ops);
630         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
631                                 &snd_als300_capture_ops);
632
633         /* pre-allocation of buffers */
634         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
635         snd_dma_pci_data(chip->pci), 64*1024, 64*1024);
636         snd_als300_dbgcallleave();
637         return 0;
638 }
639
640 static void snd_als300_init(struct snd_als300 *chip)
641 {
642         unsigned long flags;
643         u32 tmp;
644         
645         snd_als300_dbgcallenter();
646         spin_lock_irqsave(&chip->reg_lock, flags);
647         chip->revision = (snd_als300_gcr_read(chip->port, MISC_CONTROL) >> 16)
648                                                                 & 0x0000000F;
649         /* Setup DRAM */
650         tmp = snd_als300_gcr_read(chip->port, DRAM_WRITE_CONTROL);
651         snd_als300_gcr_write(chip->port, DRAM_WRITE_CONTROL,
652                                                 (tmp | DRAM_MODE_2)
653                                                 & ~WRITE_TRANS_START);
654
655         /* Enable IRQ output */
656         snd_als300_set_irq_flag(chip, IRQ_ENABLE);
657
658         /* Unmute hardware devices so their outputs get routed to
659          * the onboard mixer */
660         tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
661         snd_als300_gcr_write(chip->port, MISC_CONTROL,
662                         tmp | VMUTE_NORMAL | MMUTE_NORMAL);
663
664         /* Reset volumes */
665         snd_als300_gcr_write(chip->port, MUS_VOC_VOL, 0);
666
667         /* Make sure playback transfer is stopped */
668         tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
669         snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL,
670                         tmp & ~TRANSFER_START);
671         spin_unlock_irqrestore(&chip->reg_lock, flags);
672         snd_als300_dbgcallleave();
673 }
674
675 static int __devinit snd_als300_create(struct snd_card *card,
676                                        struct pci_dev *pci, int chip_type,
677                                        struct snd_als300 **rchip)
678 {
679         struct snd_als300 *chip;
680         void *irq_handler;
681         int err;
682
683         static struct snd_device_ops ops = {
684                 .dev_free = snd_als300_dev_free,
685         };
686         *rchip = NULL;
687
688         snd_als300_dbgcallenter();
689         if ((err = pci_enable_device(pci)) < 0)
690                 return err;
691
692         if (pci_set_dma_mask(pci, DMA_BIT_MASK(28)) < 0 ||
693                 pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(28)) < 0) {
694                 printk(KERN_ERR "error setting 28bit DMA mask\n");
695                 pci_disable_device(pci);
696                 return -ENXIO;
697         }
698         pci_set_master(pci);
699
700         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
701         if (chip == NULL) {
702                 pci_disable_device(pci);
703                 return -ENOMEM;
704         }
705
706         chip->card = card;
707         chip->pci = pci;
708         chip->irq = -1;
709         chip->chip_type = chip_type;
710         spin_lock_init(&chip->reg_lock);
711
712         if ((err = pci_request_regions(pci, "ALS300")) < 0) {
713                 kfree(chip);
714                 pci_disable_device(pci);
715                 return err;
716         }
717         chip->port = pci_resource_start(pci, 0);
718
719         if (chip->chip_type == DEVICE_ALS300_PLUS)
720                 irq_handler = snd_als300plus_interrupt;
721         else
722                 irq_handler = snd_als300_interrupt;
723
724         if (request_irq(pci->irq, irq_handler, IRQF_SHARED,
725                         card->shortname, chip)) {
726                 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
727                 snd_als300_free(chip);
728                 return -EBUSY;
729         }
730         chip->irq = pci->irq;
731
732
733         snd_als300_init(chip);
734
735         err = snd_als300_ac97(chip);
736         if (err < 0) {
737                 snd_printk(KERN_WARNING "Could not create ac97\n");
738                 snd_als300_free(chip);
739                 return err;
740         }
741
742         if ((err = snd_als300_new_pcm(chip)) < 0) {
743                 snd_printk(KERN_WARNING "Could not create PCM\n");
744                 snd_als300_free(chip);
745                 return err;
746         }
747
748         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
749                                                 chip, &ops)) < 0) {
750                 snd_als300_free(chip);
751                 return err;
752         }
753
754         snd_card_set_dev(card, &pci->dev);
755
756         *rchip = chip;
757         snd_als300_dbgcallleave();
758         return 0;
759 }
760
761 #ifdef CONFIG_PM
762 static int snd_als300_suspend(struct pci_dev *pci, pm_message_t state)
763 {
764         struct snd_card *card = pci_get_drvdata(pci);
765         struct snd_als300 *chip = card->private_data;
766
767         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
768         snd_pcm_suspend_all(chip->pcm);
769         snd_ac97_suspend(chip->ac97);
770
771         pci_disable_device(pci);
772         pci_save_state(pci);
773         pci_set_power_state(pci, pci_choose_state(pci, state));
774         return 0;
775 }
776
777 static int snd_als300_resume(struct pci_dev *pci)
778 {
779         struct snd_card *card = pci_get_drvdata(pci);
780         struct snd_als300 *chip = card->private_data;
781
782         pci_set_power_state(pci, PCI_D0);
783         pci_restore_state(pci);
784         if (pci_enable_device(pci) < 0) {
785                 printk(KERN_ERR "als300: pci_enable_device failed, "
786                        "disabling device\n");
787                 snd_card_disconnect(card);
788                 return -EIO;
789         }
790         pci_set_master(pci);
791
792         snd_als300_init(chip);
793         snd_ac97_resume(chip->ac97);
794
795         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
796         return 0;
797 }
798 #endif
799
800 static int __devinit snd_als300_probe(struct pci_dev *pci,
801                              const struct pci_device_id *pci_id)
802 {
803         static int dev;
804         struct snd_card *card;
805         struct snd_als300 *chip;
806         int err, chip_type;
807
808         if (dev >= SNDRV_CARDS)
809                 return -ENODEV;
810         if (!enable[dev]) {
811                 dev++;
812                 return -ENOENT;
813         }
814
815         err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
816
817         if (err < 0)
818                 return err;
819
820         chip_type = pci_id->driver_data;
821
822         if ((err = snd_als300_create(card, pci, chip_type, &chip)) < 0) {
823                 snd_card_free(card);
824                 return err;
825         }
826         card->private_data = chip;
827
828         strcpy(card->driver, "ALS300");
829         if (chip->chip_type == DEVICE_ALS300_PLUS)
830                 /* don't know much about ALS300+ yet
831                  * print revision number for now */
832                 sprintf(card->shortname, "ALS300+ (Rev. %d)", chip->revision);
833         else
834                 sprintf(card->shortname, "ALS300 (Rev. %c)", 'A' +
835                                                         chip->revision - 1);
836         sprintf(card->longname, "%s at 0x%lx irq %i",
837                                 card->shortname, chip->port, chip->irq);
838
839         if ((err = snd_card_register(card)) < 0) {
840                 snd_card_free(card);
841                 return err;
842         }
843         pci_set_drvdata(pci, card);
844         dev++;
845         return 0;
846 }
847
848 static struct pci_driver driver = {
849         .name = "ALS300",
850         .id_table = snd_als300_ids,
851         .probe = snd_als300_probe,
852         .remove = __devexit_p(snd_als300_remove),
853 #ifdef CONFIG_PM
854         .suspend = snd_als300_suspend,
855         .resume = snd_als300_resume,
856 #endif
857 };
858
859 static int __init alsa_card_als300_init(void)
860 {
861         return pci_register_driver(&driver);
862 }
863
864 static void __exit alsa_card_als300_exit(void)
865 {
866         pci_unregister_driver(&driver);
867 }
868
869 module_init(alsa_card_als300_init)
870 module_exit(alsa_card_als300_exit)