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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
41#include <asm/io.h>
42
43#include <sound/core.h>
44#include <sound/control.h>
45#include <sound/initval.h>
46#include <sound/pcm.h>
47#include <sound/pcm_params.h>
48#include <sound/ac97_codec.h>
49#include <sound/opl3.h>
50
51/* snd_als300_set_irq_flag */
52#define IRQ_DISABLE 0
53#define IRQ_ENABLE 1
54
55/* I/O port layout */
56#define AC97_ACCESS 0x00
57#define AC97_READ 0x04
58#define AC97_STATUS 0x06
59#define AC97_DATA_AVAIL (1<<6)
60#define AC97_BUSY (1<<7)
61#define ALS300_IRQ_STATUS 0x07 /* ALS300 Only */
62#define IRQ_PLAYBACK (1<<3)
63#define IRQ_CAPTURE (1<<2)
64#define GCR_DATA 0x08
65#define GCR_INDEX 0x0C
66#define ALS300P_DRAM_IRQ_STATUS 0x0D /* ALS300+ Only */
67#define MPU_IRQ_STATUS 0x0E /* ALS300 Rev. E+, ALS300+ */
68#define ALS300P_IRQ_STATUS 0x0F /* ALS300+ Only */
69
70/* General Control Registers */
71#define PLAYBACK_START 0x80
72#define PLAYBACK_END 0x81
73#define PLAYBACK_CONTROL 0x82
74#define TRANSFER_START (1<<16)
75#define FIFO_PAUSE (1<<17)
76#define RECORD_START 0x83
77#define RECORD_END 0x84
78#define RECORD_CONTROL 0x85
79#define DRAM_WRITE_CONTROL 0x8B
80#define WRITE_TRANS_START (1<<16)
81#define DRAM_MODE_2 (1<<17)
82#define MISC_CONTROL 0x8C
83#define IRQ_SET_BIT (1<<15)
84#define VMUTE_NORMAL (1<<20)
85#define MMUTE_NORMAL (1<<21)
86#define MUS_VOC_VOL 0x8E
87#define PLAYBACK_BLOCK_COUNTER 0x9A
88#define RECORD_BLOCK_COUNTER 0x9B
89
90#define DEBUG_PLAY_REC 0
91
92#if DEBUG_PLAY_REC
93#define snd_als300_dbgplay(format, args...) printk(KERN_ERR format, ##args)
94#else
95#define snd_als300_dbgplay(format, args...)
96#endif
97
98enum {DEVICE_ALS300, DEVICE_ALS300_PLUS};
99
100MODULE_AUTHOR("Ash Willis <ashwillis@programmer.net>");
101MODULE_DESCRIPTION("Avance Logic ALS300");
102MODULE_LICENSE("GPL");
103MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS300},{Avance Logic,ALS300+}}");
104
105static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
106static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
107static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
108
109module_param_array(index, int, NULL, 0444);
110MODULE_PARM_DESC(index, "Index value for ALS300 sound card.");
111module_param_array(id, charp, NULL, 0444);
112MODULE_PARM_DESC(id, "ID string for ALS300 sound card.");
113module_param_array(enable, bool, NULL, 0444);
114MODULE_PARM_DESC(enable, "Enable ALS300 sound card.");
115
116struct snd_als300 {
117 unsigned long port;
118 spinlock_t reg_lock;
119 struct snd_card *card;
120 struct pci_dev *pci;
121
122 struct snd_pcm *pcm;
123 struct snd_pcm_substream *playback_substream;
124 struct snd_pcm_substream *capture_substream;
125
126 struct snd_ac97 *ac97;
127 struct snd_opl3 *opl3;
128
129 struct resource *res_port;
130
131 int irq;
132
133 int chip_type; /* ALS300 or ALS300+ */
134
135 char revision;
136};
137
138struct snd_als300_substream_data {
139 int period_flipflop;
140 int control_register;
141 int block_counter_register;
142};
143
144static DEFINE_PCI_DEVICE_TABLE(snd_als300_ids) = {
145 { 0x4005, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300 },
146 { 0x4005, 0x0308, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300_PLUS },
147 { 0, }
148};
149
150MODULE_DEVICE_TABLE(pci, snd_als300_ids);
151
152static inline u32 snd_als300_gcr_read(unsigned long port, unsigned short reg)
153{
154 outb(reg, port+GCR_INDEX);
155 return inl(port+GCR_DATA);
156}
157
158static inline void snd_als300_gcr_write(unsigned long port,
159 unsigned short reg, u32 val)
160{
161 outb(reg, port+GCR_INDEX);
162 outl(val, port+GCR_DATA);
163}
164
165/* Enable/Disable Interrupts */
166static void snd_als300_set_irq_flag(struct snd_als300 *chip, int cmd)
167{
168 u32 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
169
170 /* boolean XOR check, since old vs. new hardware have
171 directly reversed bit setting for ENABLE and DISABLE.
172 ALS300+ acts like newer versions of ALS300 */
173 if (((chip->revision > 5 || chip->chip_type == DEVICE_ALS300_PLUS) ^
174 (cmd == IRQ_ENABLE)) == 0)
175 tmp |= IRQ_SET_BIT;
176 else
177 tmp &= ~IRQ_SET_BIT;
178 snd_als300_gcr_write(chip->port, MISC_CONTROL, tmp);
179}
180
181static int snd_als300_free(struct snd_als300 *chip)
182{
183 snd_als300_set_irq_flag(chip, IRQ_DISABLE);
184 if (chip->irq >= 0)
185 free_irq(chip->irq, chip);
186 pci_release_regions(chip->pci);
187 pci_disable_device(chip->pci);
188 kfree(chip);
189 return 0;
190}
191
192static int snd_als300_dev_free(struct snd_device *device)
193{
194 struct snd_als300 *chip = device->device_data;
195 return snd_als300_free(chip);
196}
197
198static irqreturn_t snd_als300_interrupt(int irq, void *dev_id)
199{
200 u8 status;
201 struct snd_als300 *chip = dev_id;
202 struct snd_als300_substream_data *data;
203
204 status = inb(chip->port+ALS300_IRQ_STATUS);
205 if (!status) /* shared IRQ, for different device?? Exit ASAP! */
206 return IRQ_NONE;
207
208 /* ACK everything ASAP */
209 outb(status, chip->port+ALS300_IRQ_STATUS);
210 if (status & IRQ_PLAYBACK) {
211 if (chip->pcm && chip->playback_substream) {
212 data = chip->playback_substream->runtime->private_data;
213 data->period_flipflop ^= 1;
214 snd_pcm_period_elapsed(chip->playback_substream);
215 snd_als300_dbgplay("IRQ_PLAYBACK\n");
216 }
217 }
218 if (status & IRQ_CAPTURE) {
219 if (chip->pcm && chip->capture_substream) {
220 data = chip->capture_substream->runtime->private_data;
221 data->period_flipflop ^= 1;
222 snd_pcm_period_elapsed(chip->capture_substream);
223 snd_als300_dbgplay("IRQ_CAPTURE\n");
224 }
225 }
226 return IRQ_HANDLED;
227}
228
229static irqreturn_t snd_als300plus_interrupt(int irq, void *dev_id)
230{
231 u8 general, mpu, dram;
232 struct snd_als300 *chip = dev_id;
233 struct snd_als300_substream_data *data;
234
235 general = inb(chip->port+ALS300P_IRQ_STATUS);
236 mpu = inb(chip->port+MPU_IRQ_STATUS);
237 dram = inb(chip->port+ALS300P_DRAM_IRQ_STATUS);
238
239 /* shared IRQ, for different device?? Exit ASAP! */
240 if ((general == 0) && ((mpu & 0x80) == 0) && ((dram & 0x01) == 0))
241 return IRQ_NONE;
242
243 if (general & IRQ_PLAYBACK) {
244 if (chip->pcm && chip->playback_substream) {
245 outb(IRQ_PLAYBACK, chip->port+ALS300P_IRQ_STATUS);
246 data = chip->playback_substream->runtime->private_data;
247 data->period_flipflop ^= 1;
248 snd_pcm_period_elapsed(chip->playback_substream);
249 snd_als300_dbgplay("IRQ_PLAYBACK\n");
250 }
251 }
252 if (general & IRQ_CAPTURE) {
253 if (chip->pcm && chip->capture_substream) {
254 outb(IRQ_CAPTURE, chip->port+ALS300P_IRQ_STATUS);
255 data = chip->capture_substream->runtime->private_data;
256 data->period_flipflop ^= 1;
257 snd_pcm_period_elapsed(chip->capture_substream);
258 snd_als300_dbgplay("IRQ_CAPTURE\n");
259 }
260 }
261 /* FIXME: Ack other interrupt types. Not important right now as
262 * those other devices aren't enabled. */
263 return IRQ_HANDLED;
264}
265
266static void snd_als300_remove(struct pci_dev *pci)
267{
268 snd_card_free(pci_get_drvdata(pci));
269}
270
271static unsigned short snd_als300_ac97_read(struct snd_ac97 *ac97,
272 unsigned short reg)
273{
274 int i;
275 struct snd_als300 *chip = ac97->private_data;
276
277 for (i = 0; i < 1000; i++) {
278 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
279 break;
280 udelay(10);
281 }
282 outl((reg << 24) | (1 << 31), chip->port+AC97_ACCESS);
283
284 for (i = 0; i < 1000; i++) {
285 if ((inb(chip->port+AC97_STATUS) & (AC97_DATA_AVAIL)) != 0)
286 break;
287 udelay(10);
288 }
289 return inw(chip->port+AC97_READ);
290}
291
292static void snd_als300_ac97_write(struct snd_ac97 *ac97,
293 unsigned short reg, unsigned short val)
294{
295 int i;
296 struct snd_als300 *chip = ac97->private_data;
297
298 for (i = 0; i < 1000; i++) {
299 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
300 break;
301 udelay(10);
302 }
303 outl((reg << 24) | val, chip->port+AC97_ACCESS);
304}
305
306static int snd_als300_ac97(struct snd_als300 *chip)
307{
308 struct snd_ac97_bus *bus;
309 struct snd_ac97_template ac97;
310 int err;
311 static struct snd_ac97_bus_ops ops = {
312 .write = snd_als300_ac97_write,
313 .read = snd_als300_ac97_read,
314 };
315
316 if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus)) < 0)
317 return err;
318
319 memset(&ac97, 0, sizeof(ac97));
320 ac97.private_data = chip;
321
322 return snd_ac97_mixer(bus, &ac97, &chip->ac97);
323}
324
325/* hardware definition
326 *
327 * In AC97 mode, we always use 48k/16bit/stereo.
328 * Any request to change data type is ignored by
329 * the card when it is running outside of legacy
330 * mode.
331 */
332static struct snd_pcm_hardware snd_als300_playback_hw =
333{
334 .info = (SNDRV_PCM_INFO_MMAP |
335 SNDRV_PCM_INFO_INTERLEAVED |
336 SNDRV_PCM_INFO_PAUSE |
337 SNDRV_PCM_INFO_MMAP_VALID),
338 .formats = SNDRV_PCM_FMTBIT_S16,
339 .rates = SNDRV_PCM_RATE_48000,
340 .rate_min = 48000,
341 .rate_max = 48000,
342 .channels_min = 2,
343 .channels_max = 2,
344 .buffer_bytes_max = 64 * 1024,
345 .period_bytes_min = 64,
346 .period_bytes_max = 32 * 1024,
347 .periods_min = 2,
348 .periods_max = 2,
349};
350
351static struct snd_pcm_hardware snd_als300_capture_hw =
352{
353 .info = (SNDRV_PCM_INFO_MMAP |
354 SNDRV_PCM_INFO_INTERLEAVED |
355 SNDRV_PCM_INFO_PAUSE |
356 SNDRV_PCM_INFO_MMAP_VALID),
357 .formats = SNDRV_PCM_FMTBIT_S16,
358 .rates = SNDRV_PCM_RATE_48000,
359 .rate_min = 48000,
360 .rate_max = 48000,
361 .channels_min = 2,
362 .channels_max = 2,
363 .buffer_bytes_max = 64 * 1024,
364 .period_bytes_min = 64,
365 .period_bytes_max = 32 * 1024,
366 .periods_min = 2,
367 .periods_max = 2,
368};
369
370static int snd_als300_playback_open(struct snd_pcm_substream *substream)
371{
372 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
373 struct snd_pcm_runtime *runtime = substream->runtime;
374 struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
375 GFP_KERNEL);
376
377 if (!data)
378 return -ENOMEM;
379 chip->playback_substream = substream;
380 runtime->hw = snd_als300_playback_hw;
381 runtime->private_data = data;
382 data->control_register = PLAYBACK_CONTROL;
383 data->block_counter_register = PLAYBACK_BLOCK_COUNTER;
384 return 0;
385}
386
387static int snd_als300_playback_close(struct snd_pcm_substream *substream)
388{
389 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
390 struct snd_als300_substream_data *data;
391
392 data = substream->runtime->private_data;
393 kfree(data);
394 chip->playback_substream = NULL;
395 snd_pcm_lib_free_pages(substream);
396 return 0;
397}
398
399static int snd_als300_capture_open(struct snd_pcm_substream *substream)
400{
401 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
402 struct snd_pcm_runtime *runtime = substream->runtime;
403 struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
404 GFP_KERNEL);
405
406 if (!data)
407 return -ENOMEM;
408 chip->capture_substream = substream;
409 runtime->hw = snd_als300_capture_hw;
410 runtime->private_data = data;
411 data->control_register = RECORD_CONTROL;
412 data->block_counter_register = RECORD_BLOCK_COUNTER;
413 return 0;
414}
415
416static int snd_als300_capture_close(struct snd_pcm_substream *substream)
417{
418 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
419 struct snd_als300_substream_data *data;
420
421 data = substream->runtime->private_data;
422 kfree(data);
423 chip->capture_substream = NULL;
424 snd_pcm_lib_free_pages(substream);
425 return 0;
426}
427
428static int snd_als300_pcm_hw_params(struct snd_pcm_substream *substream,
429 struct snd_pcm_hw_params *hw_params)
430{
431 return snd_pcm_lib_malloc_pages(substream,
432 params_buffer_bytes(hw_params));
433}
434
435static int snd_als300_pcm_hw_free(struct snd_pcm_substream *substream)
436{
437 return snd_pcm_lib_free_pages(substream);
438}
439
440static int snd_als300_playback_prepare(struct snd_pcm_substream *substream)
441{
442 u32 tmp;
443 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
444 struct snd_pcm_runtime *runtime = substream->runtime;
445 unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
446 unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
447
448 spin_lock_irq(&chip->reg_lock);
449 tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
450 tmp &= ~TRANSFER_START;
451
452 snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n",
453 period_bytes, buffer_bytes);
454
455 /* set block size */
456 tmp &= 0xffff0000;
457 tmp |= period_bytes - 1;
458 snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL, tmp);
459
460 /* set dma area */
461 snd_als300_gcr_write(chip->port, PLAYBACK_START,
462 runtime->dma_addr);
463 snd_als300_gcr_write(chip->port, PLAYBACK_END,
464 runtime->dma_addr + buffer_bytes - 1);
465 spin_unlock_irq(&chip->reg_lock);
466 return 0;
467}
468
469static int snd_als300_capture_prepare(struct snd_pcm_substream *substream)
470{
471 u32 tmp;
472 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
473 struct snd_pcm_runtime *runtime = substream->runtime;
474 unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
475 unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
476
477 spin_lock_irq(&chip->reg_lock);
478 tmp = snd_als300_gcr_read(chip->port, RECORD_CONTROL);
479 tmp &= ~TRANSFER_START;
480
481 snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n", period_bytes,
482 buffer_bytes);
483
484 /* set block size */
485 tmp &= 0xffff0000;
486 tmp |= period_bytes - 1;
487
488 /* set dma area */
489 snd_als300_gcr_write(chip->port, RECORD_CONTROL, tmp);
490 snd_als300_gcr_write(chip->port, RECORD_START,
491 runtime->dma_addr);
492 snd_als300_gcr_write(chip->port, RECORD_END,
493 runtime->dma_addr + buffer_bytes - 1);
494 spin_unlock_irq(&chip->reg_lock);
495 return 0;
496}
497
498static int snd_als300_trigger(struct snd_pcm_substream *substream, int cmd)
499{
500 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
501 u32 tmp;
502 struct snd_als300_substream_data *data;
503 unsigned short reg;
504 int ret = 0;
505
506 data = substream->runtime->private_data;
507 reg = data->control_register;
508
509 spin_lock(&chip->reg_lock);
510 switch (cmd) {
511 case SNDRV_PCM_TRIGGER_START:
512 case SNDRV_PCM_TRIGGER_RESUME:
513 tmp = snd_als300_gcr_read(chip->port, reg);
514 data->period_flipflop = 1;
515 snd_als300_gcr_write(chip->port, reg, tmp | TRANSFER_START);
516 snd_als300_dbgplay("TRIGGER START\n");
517 break;
518 case SNDRV_PCM_TRIGGER_STOP:
519 case SNDRV_PCM_TRIGGER_SUSPEND:
520 tmp = snd_als300_gcr_read(chip->port, reg);
521 snd_als300_gcr_write(chip->port, reg, tmp & ~TRANSFER_START);
522 snd_als300_dbgplay("TRIGGER STOP\n");
523 break;
524 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
525 tmp = snd_als300_gcr_read(chip->port, reg);
526 snd_als300_gcr_write(chip->port, reg, tmp | FIFO_PAUSE);
527 snd_als300_dbgplay("TRIGGER PAUSE\n");
528 break;
529 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
530 tmp = snd_als300_gcr_read(chip->port, reg);
531 snd_als300_gcr_write(chip->port, reg, tmp & ~FIFO_PAUSE);
532 snd_als300_dbgplay("TRIGGER RELEASE\n");
533 break;
534 default:
535 snd_als300_dbgplay("TRIGGER INVALID\n");
536 ret = -EINVAL;
537 }
538 spin_unlock(&chip->reg_lock);
539 return ret;
540}
541
542static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream)
543{
544 u16 current_ptr;
545 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
546 struct snd_als300_substream_data *data;
547 unsigned short period_bytes;
548
549 data = substream->runtime->private_data;
550 period_bytes = snd_pcm_lib_period_bytes(substream);
551
552 spin_lock(&chip->reg_lock);
553 current_ptr = (u16) snd_als300_gcr_read(chip->port,
554 data->block_counter_register) + 4;
555 spin_unlock(&chip->reg_lock);
556 if (current_ptr > period_bytes)
557 current_ptr = 0;
558 else
559 current_ptr = period_bytes - current_ptr;
560
561 if (data->period_flipflop == 0)
562 current_ptr += period_bytes;
563 snd_als300_dbgplay("Pointer (bytes): %d\n", current_ptr);
564 return bytes_to_frames(substream->runtime, current_ptr);
565}
566
567static struct snd_pcm_ops snd_als300_playback_ops = {
568 .open = snd_als300_playback_open,
569 .close = snd_als300_playback_close,
570 .ioctl = snd_pcm_lib_ioctl,
571 .hw_params = snd_als300_pcm_hw_params,
572 .hw_free = snd_als300_pcm_hw_free,
573 .prepare = snd_als300_playback_prepare,
574 .trigger = snd_als300_trigger,
575 .pointer = snd_als300_pointer,
576};
577
578static struct snd_pcm_ops snd_als300_capture_ops = {
579 .open = snd_als300_capture_open,
580 .close = snd_als300_capture_close,
581 .ioctl = snd_pcm_lib_ioctl,
582 .hw_params = snd_als300_pcm_hw_params,
583 .hw_free = snd_als300_pcm_hw_free,
584 .prepare = snd_als300_capture_prepare,
585 .trigger = snd_als300_trigger,
586 .pointer = snd_als300_pointer,
587};
588
589static int snd_als300_new_pcm(struct snd_als300 *chip)
590{
591 struct snd_pcm *pcm;
592 int err;
593
594 err = snd_pcm_new(chip->card, "ALS300", 0, 1, 1, &pcm);
595 if (err < 0)
596 return err;
597 pcm->private_data = chip;
598 strcpy(pcm->name, "ALS300");
599 chip->pcm = pcm;
600
601 /* set operators */
602 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
603 &snd_als300_playback_ops);
604 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
605 &snd_als300_capture_ops);
606
607 /* pre-allocation of buffers */
608 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
609 snd_dma_pci_data(chip->pci), 64*1024, 64*1024);
610 return 0;
611}
612
613static void snd_als300_init(struct snd_als300 *chip)
614{
615 unsigned long flags;
616 u32 tmp;
617
618 spin_lock_irqsave(&chip->reg_lock, flags);
619 chip->revision = (snd_als300_gcr_read(chip->port, MISC_CONTROL) >> 16)
620 & 0x0000000F;
621 /* Setup DRAM */
622 tmp = snd_als300_gcr_read(chip->port, DRAM_WRITE_CONTROL);
623 snd_als300_gcr_write(chip->port, DRAM_WRITE_CONTROL,
624 (tmp | DRAM_MODE_2)
625 & ~WRITE_TRANS_START);
626
627 /* Enable IRQ output */
628 snd_als300_set_irq_flag(chip, IRQ_ENABLE);
629
630 /* Unmute hardware devices so their outputs get routed to
631 * the onboard mixer */
632 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
633 snd_als300_gcr_write(chip->port, MISC_CONTROL,
634 tmp | VMUTE_NORMAL | MMUTE_NORMAL);
635
636 /* Reset volumes */
637 snd_als300_gcr_write(chip->port, MUS_VOC_VOL, 0);
638
639 /* Make sure playback transfer is stopped */
640 tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
641 snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL,
642 tmp & ~TRANSFER_START);
643 spin_unlock_irqrestore(&chip->reg_lock, flags);
644}
645
646static int snd_als300_create(struct snd_card *card,
647 struct pci_dev *pci, int chip_type,
648 struct snd_als300 **rchip)
649{
650 struct snd_als300 *chip;
651 void *irq_handler;
652 int err;
653
654 static struct snd_device_ops ops = {
655 .dev_free = snd_als300_dev_free,
656 };
657 *rchip = NULL;
658
659 if ((err = pci_enable_device(pci)) < 0)
660 return err;
661
662 if (pci_set_dma_mask(pci, DMA_BIT_MASK(28)) < 0 ||
663 pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(28)) < 0) {
664 dev_err(card->dev, "error setting 28bit DMA mask\n");
665 pci_disable_device(pci);
666 return -ENXIO;
667 }
668 pci_set_master(pci);
669
670 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
671 if (chip == NULL) {
672 pci_disable_device(pci);
673 return -ENOMEM;
674 }
675
676 chip->card = card;
677 chip->pci = pci;
678 chip->irq = -1;
679 chip->chip_type = chip_type;
680 spin_lock_init(&chip->reg_lock);
681
682 if ((err = pci_request_regions(pci, "ALS300")) < 0) {
683 kfree(chip);
684 pci_disable_device(pci);
685 return err;
686 }
687 chip->port = pci_resource_start(pci, 0);
688
689 if (chip->chip_type == DEVICE_ALS300_PLUS)
690 irq_handler = snd_als300plus_interrupt;
691 else
692 irq_handler = snd_als300_interrupt;
693
694 if (request_irq(pci->irq, irq_handler, IRQF_SHARED,
695 KBUILD_MODNAME, chip)) {
696 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
697 snd_als300_free(chip);
698 return -EBUSY;
699 }
700 chip->irq = pci->irq;
701
702
703 snd_als300_init(chip);
704
705 err = snd_als300_ac97(chip);
706 if (err < 0) {
707 dev_err(card->dev, "Could not create ac97\n");
708 snd_als300_free(chip);
709 return err;
710 }
711
712 if ((err = snd_als300_new_pcm(chip)) < 0) {
713 dev_err(card->dev, "Could not create PCM\n");
714 snd_als300_free(chip);
715 return err;
716 }
717
718 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
719 chip, &ops)) < 0) {
720 snd_als300_free(chip);
721 return err;
722 }
723
724 *rchip = chip;
725 return 0;
726}
727
728#ifdef CONFIG_PM_SLEEP
729static int snd_als300_suspend(struct device *dev)
730{
731 struct pci_dev *pci = to_pci_dev(dev);
732 struct snd_card *card = dev_get_drvdata(dev);
733 struct snd_als300 *chip = card->private_data;
734
735 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
736 snd_pcm_suspend_all(chip->pcm);
737 snd_ac97_suspend(chip->ac97);
738
739 pci_disable_device(pci);
740 pci_save_state(pci);
741 pci_set_power_state(pci, PCI_D3hot);
742 return 0;
743}
744
745static int snd_als300_resume(struct device *dev)
746{
747 struct pci_dev *pci = to_pci_dev(dev);
748 struct snd_card *card = dev_get_drvdata(dev);
749 struct snd_als300 *chip = card->private_data;
750
751 pci_set_power_state(pci, PCI_D0);
752 pci_restore_state(pci);
753 if (pci_enable_device(pci) < 0) {
754 dev_err(dev, "pci_enable_device failed, disabling device\n");
755 snd_card_disconnect(card);
756 return -EIO;
757 }
758 pci_set_master(pci);
759
760 snd_als300_init(chip);
761 snd_ac97_resume(chip->ac97);
762
763 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
764 return 0;
765}
766
767static SIMPLE_DEV_PM_OPS(snd_als300_pm, snd_als300_suspend, snd_als300_resume);
768#define SND_ALS300_PM_OPS &snd_als300_pm
769#else
770#define SND_ALS300_PM_OPS NULL
771#endif
772
773static int snd_als300_probe(struct pci_dev *pci,
774 const struct pci_device_id *pci_id)
775{
776 static int dev;
777 struct snd_card *card;
778 struct snd_als300 *chip;
779 int err, chip_type;
780
781 if (dev >= SNDRV_CARDS)
782 return -ENODEV;
783 if (!enable[dev]) {
784 dev++;
785 return -ENOENT;
786 }
787
788 err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
789 0, &card);
790
791 if (err < 0)
792 return err;
793
794 chip_type = pci_id->driver_data;
795
796 if ((err = snd_als300_create(card, pci, chip_type, &chip)) < 0) {
797 snd_card_free(card);
798 return err;
799 }
800 card->private_data = chip;
801
802 strcpy(card->driver, "ALS300");
803 if (chip->chip_type == DEVICE_ALS300_PLUS)
804 /* don't know much about ALS300+ yet
805 * print revision number for now */
806 sprintf(card->shortname, "ALS300+ (Rev. %d)", chip->revision);
807 else
808 sprintf(card->shortname, "ALS300 (Rev. %c)", 'A' +
809 chip->revision - 1);
810 sprintf(card->longname, "%s at 0x%lx irq %i",
811 card->shortname, chip->port, chip->irq);
812
813 if ((err = snd_card_register(card)) < 0) {
814 snd_card_free(card);
815 return err;
816 }
817 pci_set_drvdata(pci, card);
818 dev++;
819 return 0;
820}
821
822static struct pci_driver als300_driver = {
823 .name = KBUILD_MODNAME,
824 .id_table = snd_als300_ids,
825 .probe = snd_als300_probe,
826 .remove = snd_als300_remove,
827 .driver = {
828 .pm = SND_ALS300_PM_OPS,
829 },
830};
831
832module_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);