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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
97enum {DEVICE_ALS300, DEVICE_ALS300_PLUS};
98
99MODULE_AUTHOR("Ash Willis <ashwillis@programmer.net>");
100MODULE_DESCRIPTION("Avance Logic ALS300");
101MODULE_LICENSE("GPL");
102MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS300},{Avance Logic,ALS300+}}");
103
104static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
105static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
106static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
107
108module_param_array(index, int, NULL, 0444);
109MODULE_PARM_DESC(index, "Index value for ALS300 sound card.");
110module_param_array(id, charp, NULL, 0444);
111MODULE_PARM_DESC(id, "ID string for ALS300 sound card.");
112module_param_array(enable, bool, NULL, 0444);
113MODULE_PARM_DESC(enable, "Enable ALS300 sound card.");
114
115struct 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
137struct snd_als300_substream_data {
138 int period_flipflop;
139 int control_register;
140 int block_counter_register;
141};
142
143static 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
149MODULE_DEVICE_TABLE(pci, snd_als300_ids);
150
151static 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
157static 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 */
165static 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
180static 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
191static 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
197static 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
228static 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
265static void snd_als300_remove(struct pci_dev *pci)
266{
267 snd_card_free(pci_get_drvdata(pci));
268}
269
270static 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
291static 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
305static 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 */
331static const 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
350static const 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
369static 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
386static 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
398static 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
415static 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
427static 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
434static int snd_als300_pcm_hw_free(struct snd_pcm_substream *substream)
435{
436 return snd_pcm_lib_free_pages(substream);
437}
438
439static 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
468static 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
497static 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
541static 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
566static const 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
577static const 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
588static 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
612static 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
645static 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 (dma_set_mask(&pci->dev, DMA_BIT_MASK(28)) < 0 ||
662 dma_set_coherent_mask(&pci->dev, 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
728static 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
739static 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
751static 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
757static 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
806static 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
816module_pci_driver(als300_driver);
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * als300.c - driver for Avance Logic ALS300/ALS300+ soundcards.
4 * Copyright (C) 2005 by Ash Willis <ashwillis@programmer.net>
5 *
6 * TODO
7 * 4 channel playback for ALS300+
8 * gameport
9 * mpu401
10 * opl3
11 *
12 * NOTES
13 * The BLOCK_COUNTER registers for the ALS300(+) return a figure related to
14 * the position in the current period, NOT the whole buffer. It is important
15 * to know which period we are in so we can calculate the correct pointer.
16 * This is why we always use 2 periods. We can then use a flip-flop variable
17 * to keep track of what period we are in.
18 */
19
20#include <linux/delay.h>
21#include <linux/init.h>
22#include <linux/module.h>
23#include <linux/pci.h>
24#include <linux/dma-mapping.h>
25#include <linux/interrupt.h>
26#include <linux/slab.h>
27#include <linux/io.h>
28
29#include <sound/core.h>
30#include <sound/control.h>
31#include <sound/initval.h>
32#include <sound/pcm.h>
33#include <sound/pcm_params.h>
34#include <sound/ac97_codec.h>
35#include <sound/opl3.h>
36
37/* snd_als300_set_irq_flag */
38#define IRQ_DISABLE 0
39#define IRQ_ENABLE 1
40
41/* I/O port layout */
42#define AC97_ACCESS 0x00
43#define AC97_READ 0x04
44#define AC97_STATUS 0x06
45#define AC97_DATA_AVAIL (1<<6)
46#define AC97_BUSY (1<<7)
47#define ALS300_IRQ_STATUS 0x07 /* ALS300 Only */
48#define IRQ_PLAYBACK (1<<3)
49#define IRQ_CAPTURE (1<<2)
50#define GCR_DATA 0x08
51#define GCR_INDEX 0x0C
52#define ALS300P_DRAM_IRQ_STATUS 0x0D /* ALS300+ Only */
53#define MPU_IRQ_STATUS 0x0E /* ALS300 Rev. E+, ALS300+ */
54#define ALS300P_IRQ_STATUS 0x0F /* ALS300+ Only */
55
56/* General Control Registers */
57#define PLAYBACK_START 0x80
58#define PLAYBACK_END 0x81
59#define PLAYBACK_CONTROL 0x82
60#define TRANSFER_START (1<<16)
61#define FIFO_PAUSE (1<<17)
62#define RECORD_START 0x83
63#define RECORD_END 0x84
64#define RECORD_CONTROL 0x85
65#define DRAM_WRITE_CONTROL 0x8B
66#define WRITE_TRANS_START (1<<16)
67#define DRAM_MODE_2 (1<<17)
68#define MISC_CONTROL 0x8C
69#define IRQ_SET_BIT (1<<15)
70#define VMUTE_NORMAL (1<<20)
71#define MMUTE_NORMAL (1<<21)
72#define MUS_VOC_VOL 0x8E
73#define PLAYBACK_BLOCK_COUNTER 0x9A
74#define RECORD_BLOCK_COUNTER 0x9B
75
76#define DEBUG_PLAY_REC 0
77
78#if DEBUG_PLAY_REC
79#define snd_als300_dbgplay(format, args...) printk(KERN_ERR format, ##args)
80#else
81#define snd_als300_dbgplay(format, args...)
82#endif
83
84enum {DEVICE_ALS300, DEVICE_ALS300_PLUS};
85
86MODULE_AUTHOR("Ash Willis <ashwillis@programmer.net>");
87MODULE_DESCRIPTION("Avance Logic ALS300");
88MODULE_LICENSE("GPL");
89
90static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
91static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
92static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
93
94module_param_array(index, int, NULL, 0444);
95MODULE_PARM_DESC(index, "Index value for ALS300 sound card.");
96module_param_array(id, charp, NULL, 0444);
97MODULE_PARM_DESC(id, "ID string for ALS300 sound card.");
98module_param_array(enable, bool, NULL, 0444);
99MODULE_PARM_DESC(enable, "Enable ALS300 sound card.");
100
101struct snd_als300 {
102 unsigned long port;
103 spinlock_t reg_lock;
104 struct snd_card *card;
105 struct pci_dev *pci;
106
107 struct snd_pcm *pcm;
108 struct snd_pcm_substream *playback_substream;
109 struct snd_pcm_substream *capture_substream;
110
111 struct snd_ac97 *ac97;
112 struct snd_opl3 *opl3;
113
114 struct resource *res_port;
115
116 int irq;
117
118 int chip_type; /* ALS300 or ALS300+ */
119
120 char revision;
121};
122
123struct snd_als300_substream_data {
124 int period_flipflop;
125 int control_register;
126 int block_counter_register;
127};
128
129static const struct pci_device_id snd_als300_ids[] = {
130 { 0x4005, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300 },
131 { 0x4005, 0x0308, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300_PLUS },
132 { 0, }
133};
134
135MODULE_DEVICE_TABLE(pci, snd_als300_ids);
136
137static inline u32 snd_als300_gcr_read(unsigned long port, unsigned short reg)
138{
139 outb(reg, port+GCR_INDEX);
140 return inl(port+GCR_DATA);
141}
142
143static inline void snd_als300_gcr_write(unsigned long port,
144 unsigned short reg, u32 val)
145{
146 outb(reg, port+GCR_INDEX);
147 outl(val, port+GCR_DATA);
148}
149
150/* Enable/Disable Interrupts */
151static void snd_als300_set_irq_flag(struct snd_als300 *chip, int cmd)
152{
153 u32 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
154
155 /* boolean XOR check, since old vs. new hardware have
156 directly reversed bit setting for ENABLE and DISABLE.
157 ALS300+ acts like newer versions of ALS300 */
158 if (((chip->revision > 5 || chip->chip_type == DEVICE_ALS300_PLUS) ^
159 (cmd == IRQ_ENABLE)) == 0)
160 tmp |= IRQ_SET_BIT;
161 else
162 tmp &= ~IRQ_SET_BIT;
163 snd_als300_gcr_write(chip->port, MISC_CONTROL, tmp);
164}
165
166static void snd_als300_free(struct snd_card *card)
167{
168 struct snd_als300 *chip = card->private_data;
169
170 snd_als300_set_irq_flag(chip, IRQ_DISABLE);
171}
172
173static irqreturn_t snd_als300_interrupt(int irq, void *dev_id)
174{
175 u8 status;
176 struct snd_als300 *chip = dev_id;
177 struct snd_als300_substream_data *data;
178
179 status = inb(chip->port+ALS300_IRQ_STATUS);
180 if (!status) /* shared IRQ, for different device?? Exit ASAP! */
181 return IRQ_NONE;
182
183 /* ACK everything ASAP */
184 outb(status, chip->port+ALS300_IRQ_STATUS);
185 if (status & IRQ_PLAYBACK) {
186 if (chip->pcm && chip->playback_substream) {
187 data = chip->playback_substream->runtime->private_data;
188 data->period_flipflop ^= 1;
189 snd_pcm_period_elapsed(chip->playback_substream);
190 snd_als300_dbgplay("IRQ_PLAYBACK\n");
191 }
192 }
193 if (status & IRQ_CAPTURE) {
194 if (chip->pcm && chip->capture_substream) {
195 data = chip->capture_substream->runtime->private_data;
196 data->period_flipflop ^= 1;
197 snd_pcm_period_elapsed(chip->capture_substream);
198 snd_als300_dbgplay("IRQ_CAPTURE\n");
199 }
200 }
201 return IRQ_HANDLED;
202}
203
204static irqreturn_t snd_als300plus_interrupt(int irq, void *dev_id)
205{
206 u8 general, mpu, dram;
207 struct snd_als300 *chip = dev_id;
208 struct snd_als300_substream_data *data;
209
210 general = inb(chip->port+ALS300P_IRQ_STATUS);
211 mpu = inb(chip->port+MPU_IRQ_STATUS);
212 dram = inb(chip->port+ALS300P_DRAM_IRQ_STATUS);
213
214 /* shared IRQ, for different device?? Exit ASAP! */
215 if ((general == 0) && ((mpu & 0x80) == 0) && ((dram & 0x01) == 0))
216 return IRQ_NONE;
217
218 if (general & IRQ_PLAYBACK) {
219 if (chip->pcm && chip->playback_substream) {
220 outb(IRQ_PLAYBACK, chip->port+ALS300P_IRQ_STATUS);
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 (general & IRQ_CAPTURE) {
228 if (chip->pcm && chip->capture_substream) {
229 outb(IRQ_CAPTURE, chip->port+ALS300P_IRQ_STATUS);
230 data = chip->capture_substream->runtime->private_data;
231 data->period_flipflop ^= 1;
232 snd_pcm_period_elapsed(chip->capture_substream);
233 snd_als300_dbgplay("IRQ_CAPTURE\n");
234 }
235 }
236 /* FIXME: Ack other interrupt types. Not important right now as
237 * those other devices aren't enabled. */
238 return IRQ_HANDLED;
239}
240
241static unsigned short snd_als300_ac97_read(struct snd_ac97 *ac97,
242 unsigned short reg)
243{
244 int i;
245 struct snd_als300 *chip = ac97->private_data;
246
247 for (i = 0; i < 1000; i++) {
248 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
249 break;
250 udelay(10);
251 }
252 outl((reg << 24) | (1 << 31), chip->port+AC97_ACCESS);
253
254 for (i = 0; i < 1000; i++) {
255 if ((inb(chip->port+AC97_STATUS) & (AC97_DATA_AVAIL)) != 0)
256 break;
257 udelay(10);
258 }
259 return inw(chip->port+AC97_READ);
260}
261
262static void snd_als300_ac97_write(struct snd_ac97 *ac97,
263 unsigned short reg, unsigned short val)
264{
265 int i;
266 struct snd_als300 *chip = ac97->private_data;
267
268 for (i = 0; i < 1000; i++) {
269 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
270 break;
271 udelay(10);
272 }
273 outl((reg << 24) | val, chip->port+AC97_ACCESS);
274}
275
276static int snd_als300_ac97(struct snd_als300 *chip)
277{
278 struct snd_ac97_bus *bus;
279 struct snd_ac97_template ac97;
280 int err;
281 static const struct snd_ac97_bus_ops ops = {
282 .write = snd_als300_ac97_write,
283 .read = snd_als300_ac97_read,
284 };
285
286 err = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus);
287 if (err < 0)
288 return err;
289
290 memset(&ac97, 0, sizeof(ac97));
291 ac97.private_data = chip;
292
293 return snd_ac97_mixer(bus, &ac97, &chip->ac97);
294}
295
296/* hardware definition
297 *
298 * In AC97 mode, we always use 48k/16bit/stereo.
299 * Any request to change data type is ignored by
300 * the card when it is running outside of legacy
301 * mode.
302 */
303static const struct snd_pcm_hardware snd_als300_playback_hw =
304{
305 .info = (SNDRV_PCM_INFO_MMAP |
306 SNDRV_PCM_INFO_INTERLEAVED |
307 SNDRV_PCM_INFO_PAUSE |
308 SNDRV_PCM_INFO_MMAP_VALID),
309 .formats = SNDRV_PCM_FMTBIT_S16,
310 .rates = SNDRV_PCM_RATE_48000,
311 .rate_min = 48000,
312 .rate_max = 48000,
313 .channels_min = 2,
314 .channels_max = 2,
315 .buffer_bytes_max = 64 * 1024,
316 .period_bytes_min = 64,
317 .period_bytes_max = 32 * 1024,
318 .periods_min = 2,
319 .periods_max = 2,
320};
321
322static const struct snd_pcm_hardware snd_als300_capture_hw =
323{
324 .info = (SNDRV_PCM_INFO_MMAP |
325 SNDRV_PCM_INFO_INTERLEAVED |
326 SNDRV_PCM_INFO_PAUSE |
327 SNDRV_PCM_INFO_MMAP_VALID),
328 .formats = SNDRV_PCM_FMTBIT_S16,
329 .rates = SNDRV_PCM_RATE_48000,
330 .rate_min = 48000,
331 .rate_max = 48000,
332 .channels_min = 2,
333 .channels_max = 2,
334 .buffer_bytes_max = 64 * 1024,
335 .period_bytes_min = 64,
336 .period_bytes_max = 32 * 1024,
337 .periods_min = 2,
338 .periods_max = 2,
339};
340
341static int snd_als300_playback_open(struct snd_pcm_substream *substream)
342{
343 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
344 struct snd_pcm_runtime *runtime = substream->runtime;
345 struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
346 GFP_KERNEL);
347
348 if (!data)
349 return -ENOMEM;
350 chip->playback_substream = substream;
351 runtime->hw = snd_als300_playback_hw;
352 runtime->private_data = data;
353 data->control_register = PLAYBACK_CONTROL;
354 data->block_counter_register = PLAYBACK_BLOCK_COUNTER;
355 return 0;
356}
357
358static int snd_als300_playback_close(struct snd_pcm_substream *substream)
359{
360 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
361 struct snd_als300_substream_data *data;
362
363 data = substream->runtime->private_data;
364 kfree(data);
365 chip->playback_substream = NULL;
366 return 0;
367}
368
369static int snd_als300_capture_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->capture_substream = substream;
379 runtime->hw = snd_als300_capture_hw;
380 runtime->private_data = data;
381 data->control_register = RECORD_CONTROL;
382 data->block_counter_register = RECORD_BLOCK_COUNTER;
383 return 0;
384}
385
386static int snd_als300_capture_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->capture_substream = NULL;
394 return 0;
395}
396
397static int snd_als300_playback_prepare(struct snd_pcm_substream *substream)
398{
399 u32 tmp;
400 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
401 struct snd_pcm_runtime *runtime = substream->runtime;
402 unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
403 unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
404
405 spin_lock_irq(&chip->reg_lock);
406 tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
407 tmp &= ~TRANSFER_START;
408
409 snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n",
410 period_bytes, buffer_bytes);
411
412 /* set block size */
413 tmp &= 0xffff0000;
414 tmp |= period_bytes - 1;
415 snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL, tmp);
416
417 /* set dma area */
418 snd_als300_gcr_write(chip->port, PLAYBACK_START,
419 runtime->dma_addr);
420 snd_als300_gcr_write(chip->port, PLAYBACK_END,
421 runtime->dma_addr + buffer_bytes - 1);
422 spin_unlock_irq(&chip->reg_lock);
423 return 0;
424}
425
426static int snd_als300_capture_prepare(struct snd_pcm_substream *substream)
427{
428 u32 tmp;
429 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
430 struct snd_pcm_runtime *runtime = substream->runtime;
431 unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
432 unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
433
434 spin_lock_irq(&chip->reg_lock);
435 tmp = snd_als300_gcr_read(chip->port, RECORD_CONTROL);
436 tmp &= ~TRANSFER_START;
437
438 snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n", period_bytes,
439 buffer_bytes);
440
441 /* set block size */
442 tmp &= 0xffff0000;
443 tmp |= period_bytes - 1;
444
445 /* set dma area */
446 snd_als300_gcr_write(chip->port, RECORD_CONTROL, tmp);
447 snd_als300_gcr_write(chip->port, RECORD_START,
448 runtime->dma_addr);
449 snd_als300_gcr_write(chip->port, RECORD_END,
450 runtime->dma_addr + buffer_bytes - 1);
451 spin_unlock_irq(&chip->reg_lock);
452 return 0;
453}
454
455static int snd_als300_trigger(struct snd_pcm_substream *substream, int cmd)
456{
457 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
458 u32 tmp;
459 struct snd_als300_substream_data *data;
460 unsigned short reg;
461 int ret = 0;
462
463 data = substream->runtime->private_data;
464 reg = data->control_register;
465
466 spin_lock(&chip->reg_lock);
467 switch (cmd) {
468 case SNDRV_PCM_TRIGGER_START:
469 case SNDRV_PCM_TRIGGER_RESUME:
470 tmp = snd_als300_gcr_read(chip->port, reg);
471 data->period_flipflop = 1;
472 snd_als300_gcr_write(chip->port, reg, tmp | TRANSFER_START);
473 snd_als300_dbgplay("TRIGGER START\n");
474 break;
475 case SNDRV_PCM_TRIGGER_STOP:
476 case SNDRV_PCM_TRIGGER_SUSPEND:
477 tmp = snd_als300_gcr_read(chip->port, reg);
478 snd_als300_gcr_write(chip->port, reg, tmp & ~TRANSFER_START);
479 snd_als300_dbgplay("TRIGGER STOP\n");
480 break;
481 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
482 tmp = snd_als300_gcr_read(chip->port, reg);
483 snd_als300_gcr_write(chip->port, reg, tmp | FIFO_PAUSE);
484 snd_als300_dbgplay("TRIGGER PAUSE\n");
485 break;
486 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
487 tmp = snd_als300_gcr_read(chip->port, reg);
488 snd_als300_gcr_write(chip->port, reg, tmp & ~FIFO_PAUSE);
489 snd_als300_dbgplay("TRIGGER RELEASE\n");
490 break;
491 default:
492 snd_als300_dbgplay("TRIGGER INVALID\n");
493 ret = -EINVAL;
494 }
495 spin_unlock(&chip->reg_lock);
496 return ret;
497}
498
499static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream)
500{
501 u16 current_ptr;
502 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
503 struct snd_als300_substream_data *data;
504 unsigned short period_bytes;
505
506 data = substream->runtime->private_data;
507 period_bytes = snd_pcm_lib_period_bytes(substream);
508
509 spin_lock(&chip->reg_lock);
510 current_ptr = (u16) snd_als300_gcr_read(chip->port,
511 data->block_counter_register) + 4;
512 spin_unlock(&chip->reg_lock);
513 if (current_ptr > period_bytes)
514 current_ptr = 0;
515 else
516 current_ptr = period_bytes - current_ptr;
517
518 if (data->period_flipflop == 0)
519 current_ptr += period_bytes;
520 snd_als300_dbgplay("Pointer (bytes): %d\n", current_ptr);
521 return bytes_to_frames(substream->runtime, current_ptr);
522}
523
524static const struct snd_pcm_ops snd_als300_playback_ops = {
525 .open = snd_als300_playback_open,
526 .close = snd_als300_playback_close,
527 .prepare = snd_als300_playback_prepare,
528 .trigger = snd_als300_trigger,
529 .pointer = snd_als300_pointer,
530};
531
532static const struct snd_pcm_ops snd_als300_capture_ops = {
533 .open = snd_als300_capture_open,
534 .close = snd_als300_capture_close,
535 .prepare = snd_als300_capture_prepare,
536 .trigger = snd_als300_trigger,
537 .pointer = snd_als300_pointer,
538};
539
540static int snd_als300_new_pcm(struct snd_als300 *chip)
541{
542 struct snd_pcm *pcm;
543 int err;
544
545 err = snd_pcm_new(chip->card, "ALS300", 0, 1, 1, &pcm);
546 if (err < 0)
547 return err;
548 pcm->private_data = chip;
549 strcpy(pcm->name, "ALS300");
550 chip->pcm = pcm;
551
552 /* set operators */
553 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
554 &snd_als300_playback_ops);
555 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
556 &snd_als300_capture_ops);
557
558 /* pre-allocation of buffers */
559 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
560 64*1024, 64*1024);
561 return 0;
562}
563
564static void snd_als300_init(struct snd_als300 *chip)
565{
566 unsigned long flags;
567 u32 tmp;
568
569 spin_lock_irqsave(&chip->reg_lock, flags);
570 chip->revision = (snd_als300_gcr_read(chip->port, MISC_CONTROL) >> 16)
571 & 0x0000000F;
572 /* Setup DRAM */
573 tmp = snd_als300_gcr_read(chip->port, DRAM_WRITE_CONTROL);
574 snd_als300_gcr_write(chip->port, DRAM_WRITE_CONTROL,
575 (tmp | DRAM_MODE_2)
576 & ~WRITE_TRANS_START);
577
578 /* Enable IRQ output */
579 snd_als300_set_irq_flag(chip, IRQ_ENABLE);
580
581 /* Unmute hardware devices so their outputs get routed to
582 * the onboard mixer */
583 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
584 snd_als300_gcr_write(chip->port, MISC_CONTROL,
585 tmp | VMUTE_NORMAL | MMUTE_NORMAL);
586
587 /* Reset volumes */
588 snd_als300_gcr_write(chip->port, MUS_VOC_VOL, 0);
589
590 /* Make sure playback transfer is stopped */
591 tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
592 snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL,
593 tmp & ~TRANSFER_START);
594 spin_unlock_irqrestore(&chip->reg_lock, flags);
595}
596
597static int snd_als300_create(struct snd_card *card,
598 struct pci_dev *pci, int chip_type)
599{
600 struct snd_als300 *chip = card->private_data;
601 void *irq_handler;
602 int err;
603
604 err = pcim_enable_device(pci);
605 if (err < 0)
606 return err;
607
608 if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(28))) {
609 dev_err(card->dev, "error setting 28bit DMA mask\n");
610 return -ENXIO;
611 }
612 pci_set_master(pci);
613
614 chip->card = card;
615 chip->pci = pci;
616 chip->irq = -1;
617 chip->chip_type = chip_type;
618 spin_lock_init(&chip->reg_lock);
619
620 err = pci_request_regions(pci, "ALS300");
621 if (err < 0)
622 return err;
623
624 chip->port = pci_resource_start(pci, 0);
625
626 if (chip->chip_type == DEVICE_ALS300_PLUS)
627 irq_handler = snd_als300plus_interrupt;
628 else
629 irq_handler = snd_als300_interrupt;
630
631 if (devm_request_irq(&pci->dev, pci->irq, irq_handler, IRQF_SHARED,
632 KBUILD_MODNAME, chip)) {
633 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
634 return -EBUSY;
635 }
636 chip->irq = pci->irq;
637 card->sync_irq = chip->irq;
638 card->private_free = snd_als300_free;
639
640 snd_als300_init(chip);
641
642 err = snd_als300_ac97(chip);
643 if (err < 0) {
644 dev_err(card->dev, "Could not create ac97\n");
645 return err;
646 }
647
648 err = snd_als300_new_pcm(chip);
649 if (err < 0) {
650 dev_err(card->dev, "Could not create PCM\n");
651 return err;
652 }
653
654 return 0;
655}
656
657#ifdef CONFIG_PM_SLEEP
658static int snd_als300_suspend(struct device *dev)
659{
660 struct snd_card *card = dev_get_drvdata(dev);
661 struct snd_als300 *chip = card->private_data;
662
663 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
664 snd_ac97_suspend(chip->ac97);
665 return 0;
666}
667
668static int snd_als300_resume(struct device *dev)
669{
670 struct snd_card *card = dev_get_drvdata(dev);
671 struct snd_als300 *chip = card->private_data;
672
673 snd_als300_init(chip);
674 snd_ac97_resume(chip->ac97);
675
676 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
677 return 0;
678}
679
680static SIMPLE_DEV_PM_OPS(snd_als300_pm, snd_als300_suspend, snd_als300_resume);
681#define SND_ALS300_PM_OPS &snd_als300_pm
682#else
683#define SND_ALS300_PM_OPS NULL
684#endif
685
686static int snd_als300_probe(struct pci_dev *pci,
687 const struct pci_device_id *pci_id)
688{
689 static int dev;
690 struct snd_card *card;
691 struct snd_als300 *chip;
692 int err, chip_type;
693
694 if (dev >= SNDRV_CARDS)
695 return -ENODEV;
696 if (!enable[dev]) {
697 dev++;
698 return -ENOENT;
699 }
700
701 err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
702 sizeof(*chip), &card);
703 if (err < 0)
704 return err;
705 chip = card->private_data;
706
707 chip_type = pci_id->driver_data;
708
709 err = snd_als300_create(card, pci, chip_type);
710 if (err < 0)
711 goto error;
712
713 strcpy(card->driver, "ALS300");
714 if (chip->chip_type == DEVICE_ALS300_PLUS)
715 /* don't know much about ALS300+ yet
716 * print revision number for now */
717 sprintf(card->shortname, "ALS300+ (Rev. %d)", chip->revision);
718 else
719 sprintf(card->shortname, "ALS300 (Rev. %c)", 'A' +
720 chip->revision - 1);
721 sprintf(card->longname, "%s at 0x%lx irq %i",
722 card->shortname, chip->port, chip->irq);
723
724 err = snd_card_register(card);
725 if (err < 0)
726 goto error;
727
728 pci_set_drvdata(pci, card);
729 dev++;
730 return 0;
731
732 error:
733 snd_card_free(card);
734 return err;
735}
736
737static struct pci_driver als300_driver = {
738 .name = KBUILD_MODNAME,
739 .id_table = snd_als300_ids,
740 .probe = snd_als300_probe,
741 .driver = {
742 .pm = SND_ALS300_PM_OPS,
743 },
744};
745
746module_pci_driver(als300_driver);