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[IA64] Convert to generic timekeeping/clocksource
[linux-2.6/mini2440.git] / sound / pci / als300.c
blob8afcb98ca7bb8cd377670b13b9f761553cd2bdbc
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 <sound/driver.h>
34 #include <linux/delay.h>
35 #include <linux/init.h>
36 #include <linux/moduleparam.h>
37 #include <linux/pci.h>
38 #include <linux/dma-mapping.h>
39 #include <linux/interrupt.h>
40 #include <linux/slab.h>
41
42 #include <asm/io.h>
43
44 #include <sound/core.h>
45 #include <sound/control.h>
46 #include <sound/initval.h>
47 #include <sound/pcm.h>
48 #include <sound/pcm_params.h>
49 #include <sound/ac97_codec.h>
50 #include <sound/opl3.h>
51
52 /* snd_als300_set_irq_flag */
53 #define IRQ_DISABLE 0
54 #define IRQ_ENABLE 1
55
56 /* I/O port layout */
57 #define AC97_ACCESS 0x00
58 #define AC97_READ 0x04
59 #define AC97_STATUS 0x06
60 #define AC97_DATA_AVAIL (1<<6)
61 #define AC97_BUSY (1<<7)
62 #define ALS300_IRQ_STATUS 0x07 /* ALS300 Only */
63 #define IRQ_PLAYBACK (1<<3)
64 #define IRQ_CAPTURE (1<<2)
65 #define GCR_DATA 0x08
66 #define GCR_INDEX 0x0C
67 #define ALS300P_DRAM_IRQ_STATUS 0x0D /* ALS300+ Only */
68 #define MPU_IRQ_STATUS 0x0E /* ALS300 Rev. E+, ALS300+ */
69 #define ALS300P_IRQ_STATUS 0x0F /* ALS300+ Only */
70
71 /* General Control Registers */
72 #define PLAYBACK_START 0x80
73 #define PLAYBACK_END 0x81
74 #define PLAYBACK_CONTROL 0x82
75 #define TRANSFER_START (1<<16)
76 #define FIFO_PAUSE (1<<17)
77 #define RECORD_START 0x83
78 #define RECORD_END 0x84
79 #define RECORD_CONTROL 0x85
80 #define DRAM_WRITE_CONTROL 0x8B
81 #define WRITE_TRANS_START (1<<16)
82 #define DRAM_MODE_2 (1<<17)
83 #define MISC_CONTROL 0x8C
84 #define IRQ_SET_BIT (1<<15)
85 #define VMUTE_NORMAL (1<<20)
86 #define MMUTE_NORMAL (1<<21)
87 #define MUS_VOC_VOL 0x8E
88 #define PLAYBACK_BLOCK_COUNTER 0x9A
89 #define RECORD_BLOCK_COUNTER 0x9B
90
91 #define DEBUG_CALLS 1
92 #define DEBUG_PLAY_REC 1
93
94 #if DEBUG_CALLS
95 #define snd_als300_dbgcalls(format, args...) printk(format, ##args)
96 #define snd_als300_dbgcallenter() printk(KERN_ERR "--> %s\n", __FUNCTION__)
97 #define snd_als300_dbgcallleave() printk(KERN_ERR "<-- %s\n", __FUNCTION__)
98 #else
99 #define snd_als300_dbgcalls(format, args...)
100 #define snd_als300_dbgcallenter()
101 #define snd_als300_dbgcallleave()
102 #endif
103
104 #if DEBUG_PLAY_REC
105 #define snd_als300_dbgplay(format, args...) printk(KERN_ERR format, ##args)
106 #else
107 #define snd_als300_dbgplay(format, args...)
108 #endif
109
110 enum {DEVICE_ALS300, DEVICE_ALS300_PLUS};
111
112 MODULE_AUTHOR("Ash Willis <ashwillis@programmer.net>");
113 MODULE_DESCRIPTION("Avance Logic ALS300");
114 MODULE_LICENSE("GPL");
115 MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS300},{Avance Logic,ALS300+}}");
116
117 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
118 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
119 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
120
121 struct snd_als300 {
122 unsigned long port;
123 spinlock_t reg_lock;
124 struct snd_card *card;
125 struct pci_dev *pci;
126
127 struct snd_pcm *pcm;
128 struct snd_pcm_substream *playback_substream;
129 struct snd_pcm_substream *capture_substream;
130
131 struct snd_ac97 *ac97;
132 struct snd_opl3 *opl3;
133
134 struct resource *res_port;
135
136 int irq;
137
138 int chip_type; /* ALS300 or ALS300+ */
139
140 char revision;
141 };
142
143 struct snd_als300_substream_data {
144 int period_flipflop;
145 int control_register;
146 int block_counter_register;
147 };
148
149 static struct pci_device_id snd_als300_ids[] = {
150 { 0x4005, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300 },
151 { 0x4005, 0x0308, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300_PLUS },
152 { 0, }
153 };
154
155 MODULE_DEVICE_TABLE(pci, snd_als300_ids);
156
157 static inline u32 snd_als300_gcr_read(unsigned long port, unsigned short reg)
158 {
159 outb(reg, port+GCR_INDEX);
160 return inl(port+GCR_DATA);
161 }
162
163 static inline void snd_als300_gcr_write(unsigned long port,
164 unsigned short reg, u32 val)
165 {
166 outb(reg, port+GCR_INDEX);
167 outl(val, port+GCR_DATA);
168 }
169
170 /* Enable/Disable Interrupts */
171 static void snd_als300_set_irq_flag(struct snd_als300 *chip, int cmd)
172 {
173 u32 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
174 snd_als300_dbgcallenter();
175
176 /* boolean XOR check, since old vs. new hardware have
177 directly reversed bit setting for ENABLE and DISABLE.
178 ALS300+ acts like newer versions of ALS300 */
179 if (((chip->revision > 5 || chip->chip_type == DEVICE_ALS300_PLUS) ^
180 (cmd == IRQ_ENABLE)) == 0)
181 tmp |= IRQ_SET_BIT;
182 else
183 tmp &= ~IRQ_SET_BIT;
184 snd_als300_gcr_write(chip->port, MISC_CONTROL, tmp);
185 snd_als300_dbgcallleave();
186 }
187
188 static int snd_als300_free(struct snd_als300 *chip)
189 {
190 snd_als300_dbgcallenter();
191 snd_als300_set_irq_flag(chip, IRQ_DISABLE);
192 if (chip->irq >= 0)
193 free_irq(chip->irq, chip);
194 pci_release_regions(chip->pci);
195 pci_disable_device(chip->pci);
196 kfree(chip);
197 snd_als300_dbgcallleave();
198 return 0;
199 }
200
201 static int snd_als300_dev_free(struct snd_device *device)
202 {
203 struct snd_als300 *chip = device->device_data;
204 return snd_als300_free(chip);
205 }
206
207 static irqreturn_t snd_als300_interrupt(int irq, void *dev_id)
208 {
209 u8 status;
210 struct snd_als300 *chip = dev_id;
211 struct snd_als300_substream_data *data;
212
213 status = inb(chip->port+ALS300_IRQ_STATUS);
214 if (!status) /* shared IRQ, for different device?? Exit ASAP! */
215 return IRQ_NONE;
216
217 /* ACK everything ASAP */
218 outb(status, chip->port+ALS300_IRQ_STATUS);
219 if (status & IRQ_PLAYBACK) {
220 if (chip->pcm && chip->playback_substream) {
221 data = chip->playback_substream->runtime->private_data;
222 data->period_flipflop ^= 1;
223 snd_pcm_period_elapsed(chip->playback_substream);
224 snd_als300_dbgplay("IRQ_PLAYBACK\n");
225 }
226 }
227 if (status & IRQ_CAPTURE) {
228 if (chip->pcm && chip->capture_substream) {
229 data = chip->capture_substream->runtime->private_data;
230 data->period_flipflop ^= 1;
231 snd_pcm_period_elapsed(chip->capture_substream);
232 snd_als300_dbgplay("IRQ_CAPTURE\n");
233 }
234 }
235 return IRQ_HANDLED;
236 }
237
238 static irqreturn_t snd_als300plus_interrupt(int irq, void *dev_id)
239 {
240 u8 general, mpu, dram;
241 struct snd_als300 *chip = dev_id;
242 struct snd_als300_substream_data *data;
243
244 general = inb(chip->port+ALS300P_IRQ_STATUS);
245 mpu = inb(chip->port+MPU_IRQ_STATUS);
246 dram = inb(chip->port+ALS300P_DRAM_IRQ_STATUS);
247
248 /* shared IRQ, for different device?? Exit ASAP! */
249 if ((general == 0) && ((mpu & 0x80) == 0) && ((dram & 0x01) == 0))
250 return IRQ_NONE;
251
252 if (general & IRQ_PLAYBACK) {
253 if (chip->pcm && chip->playback_substream) {
254 outb(IRQ_PLAYBACK, chip->port+ALS300P_IRQ_STATUS);
255 data = chip->playback_substream->runtime->private_data;
256 data->period_flipflop ^= 1;
257 snd_pcm_period_elapsed(chip->playback_substream);
258 snd_als300_dbgplay("IRQ_PLAYBACK\n");
259 }
260 }
261 if (general & IRQ_CAPTURE) {
262 if (chip->pcm && chip->capture_substream) {
263 outb(IRQ_CAPTURE, chip->port+ALS300P_IRQ_STATUS);
264 data = chip->capture_substream->runtime->private_data;
265 data->period_flipflop ^= 1;
266 snd_pcm_period_elapsed(chip->capture_substream);
267 snd_als300_dbgplay("IRQ_CAPTURE\n");
268 }
269 }
270 /* FIXME: Ack other interrupt types. Not important right now as
271 * those other devices aren't enabled. */
272 return IRQ_HANDLED;
273 }
274
275 static void __devexit snd_als300_remove(struct pci_dev *pci)
276 {
277 snd_als300_dbgcallenter();
278 snd_card_free(pci_get_drvdata(pci));
279 pci_set_drvdata(pci, NULL);
280 snd_als300_dbgcallleave();
281 }
282
283 static unsigned short snd_als300_ac97_read(struct snd_ac97 *ac97,
284 unsigned short reg)
285 {
286 int i;
287 struct snd_als300 *chip = ac97->private_data;
288
289 for (i = 0; i < 1000; i++) {
290 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
291 break;
292 udelay(10);
293 }
294 outl((reg << 24) | (1 << 31), chip->port+AC97_ACCESS);
295
296 for (i = 0; i < 1000; i++) {
297 if ((inb(chip->port+AC97_STATUS) & (AC97_DATA_AVAIL)) != 0)
298 break;
299 udelay(10);
300 }
301 return inw(chip->port+AC97_READ);
302 }
303
304 static void snd_als300_ac97_write(struct snd_ac97 *ac97,
305 unsigned short reg, unsigned short val)
306 {
307 int i;
308 struct snd_als300 *chip = ac97->private_data;
309
310 for (i = 0; i < 1000; i++) {
311 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
312 break;
313 udelay(10);
314 }
315 outl((reg << 24) | val, chip->port+AC97_ACCESS);
316 }
317
318 static int snd_als300_ac97(struct snd_als300 *chip)
319 {
320 struct snd_ac97_bus *bus;
321 struct snd_ac97_template ac97;
322 int err;
323 static struct snd_ac97_bus_ops ops = {
324 .write = snd_als300_ac97_write,
325 .read = snd_als300_ac97_read,
326 };
327
328 snd_als300_dbgcallenter();
329 if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus)) < 0)
330 return err;
331
332 memset(&ac97, 0, sizeof(ac97));
333 ac97.private_data = chip;
334
335 snd_als300_dbgcallleave();
336 return snd_ac97_mixer(bus, &ac97, &chip->ac97);
337 }
338
339 /* hardware definition
340 *
341 * In AC97 mode, we always use 48k/16bit/stereo.
342 * Any request to change data type is ignored by
343 * the card when it is running outside of legacy
344 * mode.
345 */
346 static struct snd_pcm_hardware snd_als300_playback_hw =
347 {
348 .info = (SNDRV_PCM_INFO_MMAP |
349 SNDRV_PCM_INFO_INTERLEAVED |
350 SNDRV_PCM_INFO_PAUSE |
351 SNDRV_PCM_INFO_MMAP_VALID),
352 .formats = SNDRV_PCM_FMTBIT_S16,
353 .rates = SNDRV_PCM_RATE_48000,
354 .rate_min = 48000,
355 .rate_max = 48000,
356 .channels_min = 2,
357 .channels_max = 2,
358 .buffer_bytes_max = 64 * 1024,
359 .period_bytes_min = 64,
360 .period_bytes_max = 32 * 1024,
361 .periods_min = 2,
362 .periods_max = 2,
363 };
364
365 static struct snd_pcm_hardware snd_als300_capture_hw =
366 {
367 .info = (SNDRV_PCM_INFO_MMAP |
368 SNDRV_PCM_INFO_INTERLEAVED |
369 SNDRV_PCM_INFO_PAUSE |
370 SNDRV_PCM_INFO_MMAP_VALID),
371 .formats = SNDRV_PCM_FMTBIT_S16,
372 .rates = SNDRV_PCM_RATE_48000,
373 .rate_min = 48000,
374 .rate_max = 48000,
375 .channels_min = 2,
376 .channels_max = 2,
377 .buffer_bytes_max = 64 * 1024,
378 .period_bytes_min = 64,
379 .period_bytes_max = 32 * 1024,
380 .periods_min = 2,
381 .periods_max = 2,
382 };
383
384 static int snd_als300_playback_open(struct snd_pcm_substream *substream)
385 {
386 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
387 struct snd_pcm_runtime *runtime = substream->runtime;
388 struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
389 GFP_KERNEL);
390
391 snd_als300_dbgcallenter();
392 chip->playback_substream = substream;
393 runtime->hw = snd_als300_playback_hw;
394 runtime->private_data = data;
395 data->control_register = PLAYBACK_CONTROL;
396 data->block_counter_register = PLAYBACK_BLOCK_COUNTER;
397 snd_als300_dbgcallleave();
398 return 0;
399 }
400
401 static int snd_als300_playback_close(struct snd_pcm_substream *substream)
402 {
403 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
404 struct snd_als300_substream_data *data;
405
406 data = substream->runtime->private_data;
407 snd_als300_dbgcallenter();
408 kfree(data);
409 chip->playback_substream = NULL;
410 snd_pcm_lib_free_pages(substream);
411 snd_als300_dbgcallleave();
412 return 0;
413 }
414
415 static int snd_als300_capture_open(struct snd_pcm_substream *substream)
416 {
417 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
418 struct snd_pcm_runtime *runtime = substream->runtime;
419 struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
420 GFP_KERNEL);
421
422 snd_als300_dbgcallenter();
423 chip->capture_substream = substream;
424 runtime->hw = snd_als300_capture_hw;
425 runtime->private_data = data;
426 data->control_register = RECORD_CONTROL;
427 data->block_counter_register = RECORD_BLOCK_COUNTER;
428 snd_als300_dbgcallleave();
429 return 0;
430 }
431
432 static int snd_als300_capture_close(struct snd_pcm_substream *substream)
433 {
434 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
435 struct snd_als300_substream_data *data;
436
437 data = substream->runtime->private_data;
438 snd_als300_dbgcallenter();
439 kfree(data);
440 chip->capture_substream = NULL;
441 snd_pcm_lib_free_pages(substream);
442 snd_als300_dbgcallleave();
443 return 0;
444 }
445
446 static int snd_als300_pcm_hw_params(struct snd_pcm_substream *substream,
447 struct snd_pcm_hw_params *hw_params)
448 {
449 return snd_pcm_lib_malloc_pages(substream,
450 params_buffer_bytes(hw_params));
451 }
452
453 static int snd_als300_pcm_hw_free(struct snd_pcm_substream *substream)
454 {
455 return snd_pcm_lib_free_pages(substream);
456 }
457
458 static int snd_als300_playback_prepare(struct snd_pcm_substream *substream)
459 {
460 u32 tmp;
461 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
462 struct snd_pcm_runtime *runtime = substream->runtime;
463 unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
464 unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
465
466 snd_als300_dbgcallenter();
467 spin_lock_irq(&chip->reg_lock);
468 tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
469 tmp &= ~TRANSFER_START;
470
471 snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n",
472 period_bytes, buffer_bytes);
473
474 /* set block size */
475 tmp &= 0xffff0000;
476 tmp |= period_bytes - 1;
477 snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL, tmp);
478
479 /* set dma area */
480 snd_als300_gcr_write(chip->port, PLAYBACK_START,
481 runtime->dma_addr);
482 snd_als300_gcr_write(chip->port, PLAYBACK_END,
483 runtime->dma_addr + buffer_bytes - 1);
484 spin_unlock_irq(&chip->reg_lock);
485 snd_als300_dbgcallleave();
486 return 0;
487 }
488
489 static int snd_als300_capture_prepare(struct snd_pcm_substream *substream)
490 {
491 u32 tmp;
492 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
493 struct snd_pcm_runtime *runtime = substream->runtime;
494 unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
495 unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
496
497 snd_als300_dbgcallenter();
498 spin_lock_irq(&chip->reg_lock);
499 tmp = snd_als300_gcr_read(chip->port, RECORD_CONTROL);
500 tmp &= ~TRANSFER_START;
501
502 snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n", period_bytes,
503 buffer_bytes);
504
505 /* set block size */
506 tmp &= 0xffff0000;
507 tmp |= period_bytes - 1;
508
509 /* set dma area */
510 snd_als300_gcr_write(chip->port, RECORD_CONTROL, tmp);
511 snd_als300_gcr_write(chip->port, RECORD_START,
512 runtime->dma_addr);
513 snd_als300_gcr_write(chip->port, RECORD_END,
514 runtime->dma_addr + buffer_bytes - 1);
515 spin_unlock_irq(&chip->reg_lock);
516 snd_als300_dbgcallleave();
517 return 0;
518 }
519
520 static int snd_als300_trigger(struct snd_pcm_substream *substream, int cmd)
521 {
522 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
523 u32 tmp;
524 struct snd_als300_substream_data *data;
525 unsigned short reg;
526 int ret = 0;
527
528 data = substream->runtime->private_data;
529 reg = data->control_register;
530
531 snd_als300_dbgcallenter();
532 spin_lock(&chip->reg_lock);
533 switch (cmd) {
534 case SNDRV_PCM_TRIGGER_START:
535 case SNDRV_PCM_TRIGGER_RESUME:
536 tmp = snd_als300_gcr_read(chip->port, reg);
537 data->period_flipflop = 1;
538 snd_als300_gcr_write(chip->port, reg, tmp | TRANSFER_START);
539 snd_als300_dbgplay("TRIGGER START\n");
540 break;
541 case SNDRV_PCM_TRIGGER_STOP:
542 case SNDRV_PCM_TRIGGER_SUSPEND:
543 tmp = snd_als300_gcr_read(chip->port, reg);
544 snd_als300_gcr_write(chip->port, reg, tmp & ~TRANSFER_START);
545 snd_als300_dbgplay("TRIGGER STOP\n");
546 break;
547 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
548 tmp = snd_als300_gcr_read(chip->port, reg);
549 snd_als300_gcr_write(chip->port, reg, tmp | FIFO_PAUSE);
550 snd_als300_dbgplay("TRIGGER PAUSE\n");
551 break;
552 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
553 tmp = snd_als300_gcr_read(chip->port, reg);
554 snd_als300_gcr_write(chip->port, reg, tmp & ~FIFO_PAUSE);
555 snd_als300_dbgplay("TRIGGER RELEASE\n");
556 break;
557 default:
558 snd_als300_dbgplay("TRIGGER INVALID\n");
559 ret = -EINVAL;
560 }
561 spin_unlock(&chip->reg_lock);
562 snd_als300_dbgcallleave();
563 return ret;
564 }
565
566 static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream)
567 {
568 u16 current_ptr;
569 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
570 struct snd_als300_substream_data *data;
571 unsigned short period_bytes;
572
573 data = substream->runtime->private_data;
574 period_bytes = snd_pcm_lib_period_bytes(substream);
575
576 snd_als300_dbgcallenter();
577 spin_lock(&chip->reg_lock);
578 current_ptr = (u16) snd_als300_gcr_read(chip->port,
579 data->block_counter_register) + 4;
580 spin_unlock(&chip->reg_lock);
581 if (current_ptr > period_bytes)
582 current_ptr = 0;
583 else
584 current_ptr = period_bytes - current_ptr;
585
586 if (data->period_flipflop == 0)
587 current_ptr += period_bytes;
588 snd_als300_dbgplay("Pointer (bytes): %d\n", current_ptr);
589 snd_als300_dbgcallleave();
590 return bytes_to_frames(substream->runtime, current_ptr);
591 }
592
593 static struct snd_pcm_ops snd_als300_playback_ops = {
594 .open = snd_als300_playback_open,
595 .close = snd_als300_playback_close,
596 .ioctl = snd_pcm_lib_ioctl,
597 .hw_params = snd_als300_pcm_hw_params,
598 .hw_free = snd_als300_pcm_hw_free,
599 .prepare = snd_als300_playback_prepare,
600 .trigger = snd_als300_trigger,
601 .pointer = snd_als300_pointer,
602 };
603
604 static struct snd_pcm_ops snd_als300_capture_ops = {
605 .open = snd_als300_capture_open,
606 .close = snd_als300_capture_close,
607 .ioctl = snd_pcm_lib_ioctl,
608 .hw_params = snd_als300_pcm_hw_params,
609 .hw_free = snd_als300_pcm_hw_free,
610 .prepare = snd_als300_capture_prepare,
611 .trigger = snd_als300_trigger,
612 .pointer = snd_als300_pointer,
613 };
614
615 static int __devinit snd_als300_new_pcm(struct snd_als300 *chip)
616 {
617 struct snd_pcm *pcm;
618 int err;
619
620 snd_als300_dbgcallenter();
621 err = snd_pcm_new(chip->card, "ALS300", 0, 1, 1, &pcm);
622 if (err < 0)
623 return err;
624 pcm->private_data = chip;
625 strcpy(pcm->name, "ALS300");
626 chip->pcm = pcm;
627
628 /* set operators */
629 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
630 &snd_als300_playback_ops);
631 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
632 &snd_als300_capture_ops);
633
634 /* pre-allocation of buffers */
635 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
636 snd_dma_pci_data(chip->pci), 64*1024, 64*1024);
637 snd_als300_dbgcallleave();
638 return 0;
639 }
640
641 static void snd_als300_init(struct snd_als300 *chip)
642 {
643 unsigned long flags;
644 u32 tmp;
645
646 snd_als300_dbgcallenter();
647 spin_lock_irqsave(&chip->reg_lock, flags);
648 chip->revision = (snd_als300_gcr_read(chip->port, MISC_CONTROL) >> 16)
649 & 0x0000000F;
650 /* Setup DRAM */
651 tmp = snd_als300_gcr_read(chip->port, DRAM_WRITE_CONTROL);
652 snd_als300_gcr_write(chip->port, DRAM_WRITE_CONTROL,
653 (tmp | DRAM_MODE_2)
654 & ~WRITE_TRANS_START);
655
656 /* Enable IRQ output */
657 snd_als300_set_irq_flag(chip, IRQ_ENABLE);
658
659 /* Unmute hardware devices so their outputs get routed to
660 * the onboard mixer */
661 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
662 snd_als300_gcr_write(chip->port, MISC_CONTROL,
663 tmp | VMUTE_NORMAL | MMUTE_NORMAL);
664
665 /* Reset volumes */
666 snd_als300_gcr_write(chip->port, MUS_VOC_VOL, 0);
667
668 /* Make sure playback transfer is stopped */
669 tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
670 snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL,
671 tmp & ~TRANSFER_START);
672 spin_unlock_irqrestore(&chip->reg_lock, flags);
673 snd_als300_dbgcallleave();
674 }
675
676 static int __devinit snd_als300_create(struct snd_card *card,
677 struct pci_dev *pci, int chip_type,
678 struct snd_als300 **rchip)
679 {
680 struct snd_als300 *chip;
681 void *irq_handler;
682 int err;
683
684 static struct snd_device_ops ops = {
685 .dev_free = snd_als300_dev_free,
686 };
687 *rchip = NULL;
688
689 snd_als300_dbgcallenter();
690 if ((err = pci_enable_device(pci)) < 0)
691 return err;
692
693 if (pci_set_dma_mask(pci, DMA_28BIT_MASK) < 0 ||
694 pci_set_consistent_dma_mask(pci, DMA_28BIT_MASK) < 0) {
695 printk(KERN_ERR "error setting 28bit DMA mask\n");
696 pci_disable_device(pci);
697 return -ENXIO;
698 }
699 pci_set_master(pci);
700
701 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
702 if (chip == NULL) {
703 pci_disable_device(pci);
704 return -ENOMEM;
705 }
706
707 chip->card = card;
708 chip->pci = pci;
709 chip->irq = -1;
710 chip->chip_type = chip_type;
711 spin_lock_init(&chip->reg_lock);
712
713 if ((err = pci_request_regions(pci, "ALS300")) < 0) {
714 kfree(chip);
715 pci_disable_device(pci);
716 return err;
717 }
718 chip->port = pci_resource_start(pci, 0);
719
720 if (chip->chip_type == DEVICE_ALS300_PLUS)
721 irq_handler = snd_als300plus_interrupt;
722 else
723 irq_handler = snd_als300_interrupt;
724
725 if (request_irq(pci->irq, irq_handler, IRQF_SHARED,
726 card->shortname, chip)) {
727 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
728 snd_als300_free(chip);
729 return -EBUSY;
730 }
731 chip->irq = pci->irq;
732
733
734 snd_als300_init(chip);
735
736 if (snd_als300_ac97(chip) < 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 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
816
817 if (card == NULL)
818 return -ENOMEM;
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)
Support for the Chinese Samsung S3C2440 based development boards