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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");
89MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS300},{Avance Logic,ALS300+}}");
90
91static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
92static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
93static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
94
95module_param_array(index, int, NULL, 0444);
96MODULE_PARM_DESC(index, "Index value for ALS300 sound card.");
97module_param_array(id, charp, NULL, 0444);
98MODULE_PARM_DESC(id, "ID string for ALS300 sound card.");
99module_param_array(enable, bool, NULL, 0444);
100MODULE_PARM_DESC(enable, "Enable ALS300 sound card.");
101
102struct snd_als300 {
103 unsigned long port;
104 spinlock_t reg_lock;
105 struct snd_card *card;
106 struct pci_dev *pci;
107
108 struct snd_pcm *pcm;
109 struct snd_pcm_substream *playback_substream;
110 struct snd_pcm_substream *capture_substream;
111
112 struct snd_ac97 *ac97;
113 struct snd_opl3 *opl3;
114
115 struct resource *res_port;
116
117 int irq;
118
119 int chip_type; /* ALS300 or ALS300+ */
120
121 char revision;
122};
123
124struct snd_als300_substream_data {
125 int period_flipflop;
126 int control_register;
127 int block_counter_register;
128};
129
130static const struct pci_device_id snd_als300_ids[] = {
131 { 0x4005, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300 },
132 { 0x4005, 0x0308, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300_PLUS },
133 { 0, }
134};
135
136MODULE_DEVICE_TABLE(pci, snd_als300_ids);
137
138static inline u32 snd_als300_gcr_read(unsigned long port, unsigned short reg)
139{
140 outb(reg, port+GCR_INDEX);
141 return inl(port+GCR_DATA);
142}
143
144static inline void snd_als300_gcr_write(unsigned long port,
145 unsigned short reg, u32 val)
146{
147 outb(reg, port+GCR_INDEX);
148 outl(val, port+GCR_DATA);
149}
150
151/* Enable/Disable Interrupts */
152static void snd_als300_set_irq_flag(struct snd_als300 *chip, int cmd)
153{
154 u32 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
155
156 /* boolean XOR check, since old vs. new hardware have
157 directly reversed bit setting for ENABLE and DISABLE.
158 ALS300+ acts like newer versions of ALS300 */
159 if (((chip->revision > 5 || chip->chip_type == DEVICE_ALS300_PLUS) ^
160 (cmd == IRQ_ENABLE)) == 0)
161 tmp |= IRQ_SET_BIT;
162 else
163 tmp &= ~IRQ_SET_BIT;
164 snd_als300_gcr_write(chip->port, MISC_CONTROL, tmp);
165}
166
167static int snd_als300_free(struct snd_als300 *chip)
168{
169 snd_als300_set_irq_flag(chip, IRQ_DISABLE);
170 if (chip->irq >= 0)
171 free_irq(chip->irq, chip);
172 pci_release_regions(chip->pci);
173 pci_disable_device(chip->pci);
174 kfree(chip);
175 return 0;
176}
177
178static int snd_als300_dev_free(struct snd_device *device)
179{
180 struct snd_als300 *chip = device->device_data;
181 return snd_als300_free(chip);
182}
183
184static irqreturn_t snd_als300_interrupt(int irq, void *dev_id)
185{
186 u8 status;
187 struct snd_als300 *chip = dev_id;
188 struct snd_als300_substream_data *data;
189
190 status = inb(chip->port+ALS300_IRQ_STATUS);
191 if (!status) /* shared IRQ, for different device?? Exit ASAP! */
192 return IRQ_NONE;
193
194 /* ACK everything ASAP */
195 outb(status, chip->port+ALS300_IRQ_STATUS);
196 if (status & IRQ_PLAYBACK) {
197 if (chip->pcm && chip->playback_substream) {
198 data = chip->playback_substream->runtime->private_data;
199 data->period_flipflop ^= 1;
200 snd_pcm_period_elapsed(chip->playback_substream);
201 snd_als300_dbgplay("IRQ_PLAYBACK\n");
202 }
203 }
204 if (status & IRQ_CAPTURE) {
205 if (chip->pcm && chip->capture_substream) {
206 data = chip->capture_substream->runtime->private_data;
207 data->period_flipflop ^= 1;
208 snd_pcm_period_elapsed(chip->capture_substream);
209 snd_als300_dbgplay("IRQ_CAPTURE\n");
210 }
211 }
212 return IRQ_HANDLED;
213}
214
215static irqreturn_t snd_als300plus_interrupt(int irq, void *dev_id)
216{
217 u8 general, mpu, dram;
218 struct snd_als300 *chip = dev_id;
219 struct snd_als300_substream_data *data;
220
221 general = inb(chip->port+ALS300P_IRQ_STATUS);
222 mpu = inb(chip->port+MPU_IRQ_STATUS);
223 dram = inb(chip->port+ALS300P_DRAM_IRQ_STATUS);
224
225 /* shared IRQ, for different device?? Exit ASAP! */
226 if ((general == 0) && ((mpu & 0x80) == 0) && ((dram & 0x01) == 0))
227 return IRQ_NONE;
228
229 if (general & IRQ_PLAYBACK) {
230 if (chip->pcm && chip->playback_substream) {
231 outb(IRQ_PLAYBACK, chip->port+ALS300P_IRQ_STATUS);
232 data = chip->playback_substream->runtime->private_data;
233 data->period_flipflop ^= 1;
234 snd_pcm_period_elapsed(chip->playback_substream);
235 snd_als300_dbgplay("IRQ_PLAYBACK\n");
236 }
237 }
238 if (general & IRQ_CAPTURE) {
239 if (chip->pcm && chip->capture_substream) {
240 outb(IRQ_CAPTURE, chip->port+ALS300P_IRQ_STATUS);
241 data = chip->capture_substream->runtime->private_data;
242 data->period_flipflop ^= 1;
243 snd_pcm_period_elapsed(chip->capture_substream);
244 snd_als300_dbgplay("IRQ_CAPTURE\n");
245 }
246 }
247 /* FIXME: Ack other interrupt types. Not important right now as
248 * those other devices aren't enabled. */
249 return IRQ_HANDLED;
250}
251
252static void snd_als300_remove(struct pci_dev *pci)
253{
254 snd_card_free(pci_get_drvdata(pci));
255}
256
257static unsigned short snd_als300_ac97_read(struct snd_ac97 *ac97,
258 unsigned short reg)
259{
260 int i;
261 struct snd_als300 *chip = ac97->private_data;
262
263 for (i = 0; i < 1000; i++) {
264 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
265 break;
266 udelay(10);
267 }
268 outl((reg << 24) | (1 << 31), chip->port+AC97_ACCESS);
269
270 for (i = 0; i < 1000; i++) {
271 if ((inb(chip->port+AC97_STATUS) & (AC97_DATA_AVAIL)) != 0)
272 break;
273 udelay(10);
274 }
275 return inw(chip->port+AC97_READ);
276}
277
278static void snd_als300_ac97_write(struct snd_ac97 *ac97,
279 unsigned short reg, unsigned short val)
280{
281 int i;
282 struct snd_als300 *chip = ac97->private_data;
283
284 for (i = 0; i < 1000; i++) {
285 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
286 break;
287 udelay(10);
288 }
289 outl((reg << 24) | val, chip->port+AC97_ACCESS);
290}
291
292static int snd_als300_ac97(struct snd_als300 *chip)
293{
294 struct snd_ac97_bus *bus;
295 struct snd_ac97_template ac97;
296 int err;
297 static const struct snd_ac97_bus_ops ops = {
298 .write = snd_als300_ac97_write,
299 .read = snd_als300_ac97_read,
300 };
301
302 if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus)) < 0)
303 return err;
304
305 memset(&ac97, 0, sizeof(ac97));
306 ac97.private_data = chip;
307
308 return snd_ac97_mixer(bus, &ac97, &chip->ac97);
309}
310
311/* hardware definition
312 *
313 * In AC97 mode, we always use 48k/16bit/stereo.
314 * Any request to change data type is ignored by
315 * the card when it is running outside of legacy
316 * mode.
317 */
318static const struct snd_pcm_hardware snd_als300_playback_hw =
319{
320 .info = (SNDRV_PCM_INFO_MMAP |
321 SNDRV_PCM_INFO_INTERLEAVED |
322 SNDRV_PCM_INFO_PAUSE |
323 SNDRV_PCM_INFO_MMAP_VALID),
324 .formats = SNDRV_PCM_FMTBIT_S16,
325 .rates = SNDRV_PCM_RATE_48000,
326 .rate_min = 48000,
327 .rate_max = 48000,
328 .channels_min = 2,
329 .channels_max = 2,
330 .buffer_bytes_max = 64 * 1024,
331 .period_bytes_min = 64,
332 .period_bytes_max = 32 * 1024,
333 .periods_min = 2,
334 .periods_max = 2,
335};
336
337static const struct snd_pcm_hardware snd_als300_capture_hw =
338{
339 .info = (SNDRV_PCM_INFO_MMAP |
340 SNDRV_PCM_INFO_INTERLEAVED |
341 SNDRV_PCM_INFO_PAUSE |
342 SNDRV_PCM_INFO_MMAP_VALID),
343 .formats = SNDRV_PCM_FMTBIT_S16,
344 .rates = SNDRV_PCM_RATE_48000,
345 .rate_min = 48000,
346 .rate_max = 48000,
347 .channels_min = 2,
348 .channels_max = 2,
349 .buffer_bytes_max = 64 * 1024,
350 .period_bytes_min = 64,
351 .period_bytes_max = 32 * 1024,
352 .periods_min = 2,
353 .periods_max = 2,
354};
355
356static int snd_als300_playback_open(struct snd_pcm_substream *substream)
357{
358 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
359 struct snd_pcm_runtime *runtime = substream->runtime;
360 struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
361 GFP_KERNEL);
362
363 if (!data)
364 return -ENOMEM;
365 chip->playback_substream = substream;
366 runtime->hw = snd_als300_playback_hw;
367 runtime->private_data = data;
368 data->control_register = PLAYBACK_CONTROL;
369 data->block_counter_register = PLAYBACK_BLOCK_COUNTER;
370 return 0;
371}
372
373static int snd_als300_playback_close(struct snd_pcm_substream *substream)
374{
375 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
376 struct snd_als300_substream_data *data;
377
378 data = substream->runtime->private_data;
379 kfree(data);
380 chip->playback_substream = NULL;
381 return 0;
382}
383
384static int snd_als300_capture_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 if (!data)
392 return -ENOMEM;
393 chip->capture_substream = substream;
394 runtime->hw = snd_als300_capture_hw;
395 runtime->private_data = data;
396 data->control_register = RECORD_CONTROL;
397 data->block_counter_register = RECORD_BLOCK_COUNTER;
398 return 0;
399}
400
401static int snd_als300_capture_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 kfree(data);
408 chip->capture_substream = NULL;
409 return 0;
410}
411
412static int snd_als300_playback_prepare(struct snd_pcm_substream *substream)
413{
414 u32 tmp;
415 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
416 struct snd_pcm_runtime *runtime = substream->runtime;
417 unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
418 unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
419
420 spin_lock_irq(&chip->reg_lock);
421 tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
422 tmp &= ~TRANSFER_START;
423
424 snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n",
425 period_bytes, buffer_bytes);
426
427 /* set block size */
428 tmp &= 0xffff0000;
429 tmp |= period_bytes - 1;
430 snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL, tmp);
431
432 /* set dma area */
433 snd_als300_gcr_write(chip->port, PLAYBACK_START,
434 runtime->dma_addr);
435 snd_als300_gcr_write(chip->port, PLAYBACK_END,
436 runtime->dma_addr + buffer_bytes - 1);
437 spin_unlock_irq(&chip->reg_lock);
438 return 0;
439}
440
441static int snd_als300_capture_prepare(struct snd_pcm_substream *substream)
442{
443 u32 tmp;
444 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
445 struct snd_pcm_runtime *runtime = substream->runtime;
446 unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
447 unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
448
449 spin_lock_irq(&chip->reg_lock);
450 tmp = snd_als300_gcr_read(chip->port, RECORD_CONTROL);
451 tmp &= ~TRANSFER_START;
452
453 snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n", period_bytes,
454 buffer_bytes);
455
456 /* set block size */
457 tmp &= 0xffff0000;
458 tmp |= period_bytes - 1;
459
460 /* set dma area */
461 snd_als300_gcr_write(chip->port, RECORD_CONTROL, tmp);
462 snd_als300_gcr_write(chip->port, RECORD_START,
463 runtime->dma_addr);
464 snd_als300_gcr_write(chip->port, RECORD_END,
465 runtime->dma_addr + buffer_bytes - 1);
466 spin_unlock_irq(&chip->reg_lock);
467 return 0;
468}
469
470static int snd_als300_trigger(struct snd_pcm_substream *substream, int cmd)
471{
472 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
473 u32 tmp;
474 struct snd_als300_substream_data *data;
475 unsigned short reg;
476 int ret = 0;
477
478 data = substream->runtime->private_data;
479 reg = data->control_register;
480
481 spin_lock(&chip->reg_lock);
482 switch (cmd) {
483 case SNDRV_PCM_TRIGGER_START:
484 case SNDRV_PCM_TRIGGER_RESUME:
485 tmp = snd_als300_gcr_read(chip->port, reg);
486 data->period_flipflop = 1;
487 snd_als300_gcr_write(chip->port, reg, tmp | TRANSFER_START);
488 snd_als300_dbgplay("TRIGGER START\n");
489 break;
490 case SNDRV_PCM_TRIGGER_STOP:
491 case SNDRV_PCM_TRIGGER_SUSPEND:
492 tmp = snd_als300_gcr_read(chip->port, reg);
493 snd_als300_gcr_write(chip->port, reg, tmp & ~TRANSFER_START);
494 snd_als300_dbgplay("TRIGGER STOP\n");
495 break;
496 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
497 tmp = snd_als300_gcr_read(chip->port, reg);
498 snd_als300_gcr_write(chip->port, reg, tmp | FIFO_PAUSE);
499 snd_als300_dbgplay("TRIGGER PAUSE\n");
500 break;
501 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
502 tmp = snd_als300_gcr_read(chip->port, reg);
503 snd_als300_gcr_write(chip->port, reg, tmp & ~FIFO_PAUSE);
504 snd_als300_dbgplay("TRIGGER RELEASE\n");
505 break;
506 default:
507 snd_als300_dbgplay("TRIGGER INVALID\n");
508 ret = -EINVAL;
509 }
510 spin_unlock(&chip->reg_lock);
511 return ret;
512}
513
514static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream)
515{
516 u16 current_ptr;
517 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
518 struct snd_als300_substream_data *data;
519 unsigned short period_bytes;
520
521 data = substream->runtime->private_data;
522 period_bytes = snd_pcm_lib_period_bytes(substream);
523
524 spin_lock(&chip->reg_lock);
525 current_ptr = (u16) snd_als300_gcr_read(chip->port,
526 data->block_counter_register) + 4;
527 spin_unlock(&chip->reg_lock);
528 if (current_ptr > period_bytes)
529 current_ptr = 0;
530 else
531 current_ptr = period_bytes - current_ptr;
532
533 if (data->period_flipflop == 0)
534 current_ptr += period_bytes;
535 snd_als300_dbgplay("Pointer (bytes): %d\n", current_ptr);
536 return bytes_to_frames(substream->runtime, current_ptr);
537}
538
539static const struct snd_pcm_ops snd_als300_playback_ops = {
540 .open = snd_als300_playback_open,
541 .close = snd_als300_playback_close,
542 .prepare = snd_als300_playback_prepare,
543 .trigger = snd_als300_trigger,
544 .pointer = snd_als300_pointer,
545};
546
547static const struct snd_pcm_ops snd_als300_capture_ops = {
548 .open = snd_als300_capture_open,
549 .close = snd_als300_capture_close,
550 .prepare = snd_als300_capture_prepare,
551 .trigger = snd_als300_trigger,
552 .pointer = snd_als300_pointer,
553};
554
555static int snd_als300_new_pcm(struct snd_als300 *chip)
556{
557 struct snd_pcm *pcm;
558 int err;
559
560 err = snd_pcm_new(chip->card, "ALS300", 0, 1, 1, &pcm);
561 if (err < 0)
562 return err;
563 pcm->private_data = chip;
564 strcpy(pcm->name, "ALS300");
565 chip->pcm = pcm;
566
567 /* set operators */
568 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
569 &snd_als300_playback_ops);
570 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
571 &snd_als300_capture_ops);
572
573 /* pre-allocation of buffers */
574 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
575 64*1024, 64*1024);
576 return 0;
577}
578
579static void snd_als300_init(struct snd_als300 *chip)
580{
581 unsigned long flags;
582 u32 tmp;
583
584 spin_lock_irqsave(&chip->reg_lock, flags);
585 chip->revision = (snd_als300_gcr_read(chip->port, MISC_CONTROL) >> 16)
586 & 0x0000000F;
587 /* Setup DRAM */
588 tmp = snd_als300_gcr_read(chip->port, DRAM_WRITE_CONTROL);
589 snd_als300_gcr_write(chip->port, DRAM_WRITE_CONTROL,
590 (tmp | DRAM_MODE_2)
591 & ~WRITE_TRANS_START);
592
593 /* Enable IRQ output */
594 snd_als300_set_irq_flag(chip, IRQ_ENABLE);
595
596 /* Unmute hardware devices so their outputs get routed to
597 * the onboard mixer */
598 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
599 snd_als300_gcr_write(chip->port, MISC_CONTROL,
600 tmp | VMUTE_NORMAL | MMUTE_NORMAL);
601
602 /* Reset volumes */
603 snd_als300_gcr_write(chip->port, MUS_VOC_VOL, 0);
604
605 /* Make sure playback transfer is stopped */
606 tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
607 snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL,
608 tmp & ~TRANSFER_START);
609 spin_unlock_irqrestore(&chip->reg_lock, flags);
610}
611
612static int snd_als300_create(struct snd_card *card,
613 struct pci_dev *pci, int chip_type,
614 struct snd_als300 **rchip)
615{
616 struct snd_als300 *chip;
617 void *irq_handler;
618 int err;
619
620 static const struct snd_device_ops ops = {
621 .dev_free = snd_als300_dev_free,
622 };
623 *rchip = NULL;
624
625 if ((err = pci_enable_device(pci)) < 0)
626 return err;
627
628 if (dma_set_mask(&pci->dev, DMA_BIT_MASK(28)) < 0 ||
629 dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(28)) < 0) {
630 dev_err(card->dev, "error setting 28bit DMA mask\n");
631 pci_disable_device(pci);
632 return -ENXIO;
633 }
634 pci_set_master(pci);
635
636 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
637 if (chip == NULL) {
638 pci_disable_device(pci);
639 return -ENOMEM;
640 }
641
642 chip->card = card;
643 chip->pci = pci;
644 chip->irq = -1;
645 chip->chip_type = chip_type;
646 spin_lock_init(&chip->reg_lock);
647
648 if ((err = pci_request_regions(pci, "ALS300")) < 0) {
649 kfree(chip);
650 pci_disable_device(pci);
651 return err;
652 }
653 chip->port = pci_resource_start(pci, 0);
654
655 if (chip->chip_type == DEVICE_ALS300_PLUS)
656 irq_handler = snd_als300plus_interrupt;
657 else
658 irq_handler = snd_als300_interrupt;
659
660 if (request_irq(pci->irq, irq_handler, IRQF_SHARED,
661 KBUILD_MODNAME, chip)) {
662 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
663 snd_als300_free(chip);
664 return -EBUSY;
665 }
666 chip->irq = pci->irq;
667 card->sync_irq = chip->irq;
668
669 snd_als300_init(chip);
670
671 err = snd_als300_ac97(chip);
672 if (err < 0) {
673 dev_err(card->dev, "Could not create ac97\n");
674 snd_als300_free(chip);
675 return err;
676 }
677
678 if ((err = snd_als300_new_pcm(chip)) < 0) {
679 dev_err(card->dev, "Could not create PCM\n");
680 snd_als300_free(chip);
681 return err;
682 }
683
684 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
685 chip, &ops)) < 0) {
686 snd_als300_free(chip);
687 return err;
688 }
689
690 *rchip = chip;
691 return 0;
692}
693
694#ifdef CONFIG_PM_SLEEP
695static int snd_als300_suspend(struct device *dev)
696{
697 struct snd_card *card = dev_get_drvdata(dev);
698 struct snd_als300 *chip = card->private_data;
699
700 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
701 snd_ac97_suspend(chip->ac97);
702 return 0;
703}
704
705static int snd_als300_resume(struct device *dev)
706{
707 struct snd_card *card = dev_get_drvdata(dev);
708 struct snd_als300 *chip = card->private_data;
709
710 snd_als300_init(chip);
711 snd_ac97_resume(chip->ac97);
712
713 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
714 return 0;
715}
716
717static SIMPLE_DEV_PM_OPS(snd_als300_pm, snd_als300_suspend, snd_als300_resume);
718#define SND_ALS300_PM_OPS &snd_als300_pm
719#else
720#define SND_ALS300_PM_OPS NULL
721#endif
722
723static int snd_als300_probe(struct pci_dev *pci,
724 const struct pci_device_id *pci_id)
725{
726 static int dev;
727 struct snd_card *card;
728 struct snd_als300 *chip;
729 int err, chip_type;
730
731 if (dev >= SNDRV_CARDS)
732 return -ENODEV;
733 if (!enable[dev]) {
734 dev++;
735 return -ENOENT;
736 }
737
738 err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
739 0, &card);
740
741 if (err < 0)
742 return err;
743
744 chip_type = pci_id->driver_data;
745
746 if ((err = snd_als300_create(card, pci, chip_type, &chip)) < 0) {
747 snd_card_free(card);
748 return err;
749 }
750 card->private_data = chip;
751
752 strcpy(card->driver, "ALS300");
753 if (chip->chip_type == DEVICE_ALS300_PLUS)
754 /* don't know much about ALS300+ yet
755 * print revision number for now */
756 sprintf(card->shortname, "ALS300+ (Rev. %d)", chip->revision);
757 else
758 sprintf(card->shortname, "ALS300 (Rev. %c)", 'A' +
759 chip->revision - 1);
760 sprintf(card->longname, "%s at 0x%lx irq %i",
761 card->shortname, chip->port, chip->irq);
762
763 if ((err = snd_card_register(card)) < 0) {
764 snd_card_free(card);
765 return err;
766 }
767 pci_set_drvdata(pci, card);
768 dev++;
769 return 0;
770}
771
772static struct pci_driver als300_driver = {
773 .name = KBUILD_MODNAME,
774 .id_table = snd_als300_ids,
775 .probe = snd_als300_probe,
776 .remove = snd_als300_remove,
777 .driver = {
778 .pm = SND_ALS300_PM_OPS,
779 },
780};
781
782module_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
657static int snd_als300_suspend(struct device *dev)
658{
659 struct snd_card *card = dev_get_drvdata(dev);
660 struct snd_als300 *chip = card->private_data;
661
662 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
663 snd_ac97_suspend(chip->ac97);
664 return 0;
665}
666
667static int snd_als300_resume(struct device *dev)
668{
669 struct snd_card *card = dev_get_drvdata(dev);
670 struct snd_als300 *chip = card->private_data;
671
672 snd_als300_init(chip);
673 snd_ac97_resume(chip->ac97);
674
675 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
676 return 0;
677}
678
679static DEFINE_SIMPLE_DEV_PM_OPS(snd_als300_pm, snd_als300_suspend, snd_als300_resume);
680
681static int snd_als300_probe(struct pci_dev *pci,
682 const struct pci_device_id *pci_id)
683{
684 static int dev;
685 struct snd_card *card;
686 struct snd_als300 *chip;
687 int err, chip_type;
688
689 if (dev >= SNDRV_CARDS)
690 return -ENODEV;
691 if (!enable[dev]) {
692 dev++;
693 return -ENOENT;
694 }
695
696 err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
697 sizeof(*chip), &card);
698 if (err < 0)
699 return err;
700 chip = card->private_data;
701
702 chip_type = pci_id->driver_data;
703
704 err = snd_als300_create(card, pci, chip_type);
705 if (err < 0)
706 goto error;
707
708 strcpy(card->driver, "ALS300");
709 if (chip->chip_type == DEVICE_ALS300_PLUS)
710 /* don't know much about ALS300+ yet
711 * print revision number for now */
712 sprintf(card->shortname, "ALS300+ (Rev. %d)", chip->revision);
713 else
714 sprintf(card->shortname, "ALS300 (Rev. %c)", 'A' +
715 chip->revision - 1);
716 sprintf(card->longname, "%s at 0x%lx irq %i",
717 card->shortname, chip->port, chip->irq);
718
719 err = snd_card_register(card);
720 if (err < 0)
721 goto error;
722
723 pci_set_drvdata(pci, card);
724 dev++;
725 return 0;
726
727 error:
728 snd_card_free(card);
729 return err;
730}
731
732static struct pci_driver als300_driver = {
733 .name = KBUILD_MODNAME,
734 .id_table = snd_als300_ids,
735 .probe = snd_als300_probe,
736 .driver = {
737 .pm = &snd_als300_pm,
738 },
739};
740
741module_pci_driver(als300_driver);