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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/*
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_CALLS 0
91#define DEBUG_PLAY_REC 0
92
93#if DEBUG_CALLS
94#define snd_als300_dbgcalls(format, args...) printk(KERN_DEBUG format, ##args)
95#define snd_als300_dbgcallenter() printk(KERN_ERR "--> %s\n", __func__)
96#define snd_als300_dbgcallleave() printk(KERN_ERR "<-- %s\n", __func__)
97#else
98#define snd_als300_dbgcalls(format, args...)
99#define snd_als300_dbgcallenter()
100#define snd_als300_dbgcallleave()
101#endif
102
103#if DEBUG_PLAY_REC
104#define snd_als300_dbgplay(format, args...) printk(KERN_ERR format, ##args)
105#else
106#define snd_als300_dbgplay(format, args...)
107#endif
108
109enum {DEVICE_ALS300, DEVICE_ALS300_PLUS};
110
111MODULE_AUTHOR("Ash Willis <ashwillis@programmer.net>");
112MODULE_DESCRIPTION("Avance Logic ALS300");
113MODULE_LICENSE("GPL");
114MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS300},{Avance Logic,ALS300+}}");
115
116static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
117static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
118static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
119
120module_param_array(index, int, NULL, 0444);
121MODULE_PARM_DESC(index, "Index value for ALS300 sound card.");
122module_param_array(id, charp, NULL, 0444);
123MODULE_PARM_DESC(id, "ID string for ALS300 sound card.");
124module_param_array(enable, bool, NULL, 0444);
125MODULE_PARM_DESC(enable, "Enable ALS300 sound card.");
126
127struct snd_als300 {
128 unsigned long port;
129 spinlock_t reg_lock;
130 struct snd_card *card;
131 struct pci_dev *pci;
132
133 struct snd_pcm *pcm;
134 struct snd_pcm_substream *playback_substream;
135 struct snd_pcm_substream *capture_substream;
136
137 struct snd_ac97 *ac97;
138 struct snd_opl3 *opl3;
139
140 struct resource *res_port;
141
142 int irq;
143
144 int chip_type; /* ALS300 or ALS300+ */
145
146 char revision;
147};
148
149struct snd_als300_substream_data {
150 int period_flipflop;
151 int control_register;
152 int block_counter_register;
153};
154
155static DEFINE_PCI_DEVICE_TABLE(snd_als300_ids) = {
156 { 0x4005, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300 },
157 { 0x4005, 0x0308, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300_PLUS },
158 { 0, }
159};
160
161MODULE_DEVICE_TABLE(pci, snd_als300_ids);
162
163static inline u32 snd_als300_gcr_read(unsigned long port, unsigned short reg)
164{
165 outb(reg, port+GCR_INDEX);
166 return inl(port+GCR_DATA);
167}
168
169static inline void snd_als300_gcr_write(unsigned long port,
170 unsigned short reg, u32 val)
171{
172 outb(reg, port+GCR_INDEX);
173 outl(val, port+GCR_DATA);
174}
175
176/* Enable/Disable Interrupts */
177static void snd_als300_set_irq_flag(struct snd_als300 *chip, int cmd)
178{
179 u32 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
180 snd_als300_dbgcallenter();
181
182 /* boolean XOR check, since old vs. new hardware have
183 directly reversed bit setting for ENABLE and DISABLE.
184 ALS300+ acts like newer versions of ALS300 */
185 if (((chip->revision > 5 || chip->chip_type == DEVICE_ALS300_PLUS) ^
186 (cmd == IRQ_ENABLE)) == 0)
187 tmp |= IRQ_SET_BIT;
188 else
189 tmp &= ~IRQ_SET_BIT;
190 snd_als300_gcr_write(chip->port, MISC_CONTROL, tmp);
191 snd_als300_dbgcallleave();
192}
193
194static int snd_als300_free(struct snd_als300 *chip)
195{
196 snd_als300_dbgcallenter();
197 snd_als300_set_irq_flag(chip, IRQ_DISABLE);
198 if (chip->irq >= 0)
199 free_irq(chip->irq, chip);
200 pci_release_regions(chip->pci);
201 pci_disable_device(chip->pci);
202 kfree(chip);
203 snd_als300_dbgcallleave();
204 return 0;
205}
206
207static int snd_als300_dev_free(struct snd_device *device)
208{
209 struct snd_als300 *chip = device->device_data;
210 return snd_als300_free(chip);
211}
212
213static irqreturn_t snd_als300_interrupt(int irq, void *dev_id)
214{
215 u8 status;
216 struct snd_als300 *chip = dev_id;
217 struct snd_als300_substream_data *data;
218
219 status = inb(chip->port+ALS300_IRQ_STATUS);
220 if (!status) /* shared IRQ, for different device?? Exit ASAP! */
221 return IRQ_NONE;
222
223 /* ACK everything ASAP */
224 outb(status, chip->port+ALS300_IRQ_STATUS);
225 if (status & IRQ_PLAYBACK) {
226 if (chip->pcm && chip->playback_substream) {
227 data = chip->playback_substream->runtime->private_data;
228 data->period_flipflop ^= 1;
229 snd_pcm_period_elapsed(chip->playback_substream);
230 snd_als300_dbgplay("IRQ_PLAYBACK\n");
231 }
232 }
233 if (status & IRQ_CAPTURE) {
234 if (chip->pcm && chip->capture_substream) {
235 data = chip->capture_substream->runtime->private_data;
236 data->period_flipflop ^= 1;
237 snd_pcm_period_elapsed(chip->capture_substream);
238 snd_als300_dbgplay("IRQ_CAPTURE\n");
239 }
240 }
241 return IRQ_HANDLED;
242}
243
244static irqreturn_t snd_als300plus_interrupt(int irq, void *dev_id)
245{
246 u8 general, mpu, dram;
247 struct snd_als300 *chip = dev_id;
248 struct snd_als300_substream_data *data;
249
250 general = inb(chip->port+ALS300P_IRQ_STATUS);
251 mpu = inb(chip->port+MPU_IRQ_STATUS);
252 dram = inb(chip->port+ALS300P_DRAM_IRQ_STATUS);
253
254 /* shared IRQ, for different device?? Exit ASAP! */
255 if ((general == 0) && ((mpu & 0x80) == 0) && ((dram & 0x01) == 0))
256 return IRQ_NONE;
257
258 if (general & IRQ_PLAYBACK) {
259 if (chip->pcm && chip->playback_substream) {
260 outb(IRQ_PLAYBACK, chip->port+ALS300P_IRQ_STATUS);
261 data = chip->playback_substream->runtime->private_data;
262 data->period_flipflop ^= 1;
263 snd_pcm_period_elapsed(chip->playback_substream);
264 snd_als300_dbgplay("IRQ_PLAYBACK\n");
265 }
266 }
267 if (general & IRQ_CAPTURE) {
268 if (chip->pcm && chip->capture_substream) {
269 outb(IRQ_CAPTURE, chip->port+ALS300P_IRQ_STATUS);
270 data = chip->capture_substream->runtime->private_data;
271 data->period_flipflop ^= 1;
272 snd_pcm_period_elapsed(chip->capture_substream);
273 snd_als300_dbgplay("IRQ_CAPTURE\n");
274 }
275 }
276 /* FIXME: Ack other interrupt types. Not important right now as
277 * those other devices aren't enabled. */
278 return IRQ_HANDLED;
279}
280
281static void __devexit snd_als300_remove(struct pci_dev *pci)
282{
283 snd_als300_dbgcallenter();
284 snd_card_free(pci_get_drvdata(pci));
285 pci_set_drvdata(pci, NULL);
286 snd_als300_dbgcallleave();
287}
288
289static unsigned short snd_als300_ac97_read(struct snd_ac97 *ac97,
290 unsigned short reg)
291{
292 int i;
293 struct snd_als300 *chip = ac97->private_data;
294
295 for (i = 0; i < 1000; i++) {
296 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
297 break;
298 udelay(10);
299 }
300 outl((reg << 24) | (1 << 31), chip->port+AC97_ACCESS);
301
302 for (i = 0; i < 1000; i++) {
303 if ((inb(chip->port+AC97_STATUS) & (AC97_DATA_AVAIL)) != 0)
304 break;
305 udelay(10);
306 }
307 return inw(chip->port+AC97_READ);
308}
309
310static void snd_als300_ac97_write(struct snd_ac97 *ac97,
311 unsigned short reg, unsigned short val)
312{
313 int i;
314 struct snd_als300 *chip = ac97->private_data;
315
316 for (i = 0; i < 1000; i++) {
317 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
318 break;
319 udelay(10);
320 }
321 outl((reg << 24) | val, chip->port+AC97_ACCESS);
322}
323
324static int snd_als300_ac97(struct snd_als300 *chip)
325{
326 struct snd_ac97_bus *bus;
327 struct snd_ac97_template ac97;
328 int err;
329 static struct snd_ac97_bus_ops ops = {
330 .write = snd_als300_ac97_write,
331 .read = snd_als300_ac97_read,
332 };
333
334 snd_als300_dbgcallenter();
335 if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus)) < 0)
336 return err;
337
338 memset(&ac97, 0, sizeof(ac97));
339 ac97.private_data = chip;
340
341 snd_als300_dbgcallleave();
342 return snd_ac97_mixer(bus, &ac97, &chip->ac97);
343}
344
345/* hardware definition
346 *
347 * In AC97 mode, we always use 48k/16bit/stereo.
348 * Any request to change data type is ignored by
349 * the card when it is running outside of legacy
350 * mode.
351 */
352static struct snd_pcm_hardware snd_als300_playback_hw =
353{
354 .info = (SNDRV_PCM_INFO_MMAP |
355 SNDRV_PCM_INFO_INTERLEAVED |
356 SNDRV_PCM_INFO_PAUSE |
357 SNDRV_PCM_INFO_MMAP_VALID),
358 .formats = SNDRV_PCM_FMTBIT_S16,
359 .rates = SNDRV_PCM_RATE_48000,
360 .rate_min = 48000,
361 .rate_max = 48000,
362 .channels_min = 2,
363 .channels_max = 2,
364 .buffer_bytes_max = 64 * 1024,
365 .period_bytes_min = 64,
366 .period_bytes_max = 32 * 1024,
367 .periods_min = 2,
368 .periods_max = 2,
369};
370
371static struct snd_pcm_hardware snd_als300_capture_hw =
372{
373 .info = (SNDRV_PCM_INFO_MMAP |
374 SNDRV_PCM_INFO_INTERLEAVED |
375 SNDRV_PCM_INFO_PAUSE |
376 SNDRV_PCM_INFO_MMAP_VALID),
377 .formats = SNDRV_PCM_FMTBIT_S16,
378 .rates = SNDRV_PCM_RATE_48000,
379 .rate_min = 48000,
380 .rate_max = 48000,
381 .channels_min = 2,
382 .channels_max = 2,
383 .buffer_bytes_max = 64 * 1024,
384 .period_bytes_min = 64,
385 .period_bytes_max = 32 * 1024,
386 .periods_min = 2,
387 .periods_max = 2,
388};
389
390static int snd_als300_playback_open(struct snd_pcm_substream *substream)
391{
392 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
393 struct snd_pcm_runtime *runtime = substream->runtime;
394 struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
395 GFP_KERNEL);
396
397 snd_als300_dbgcallenter();
398 chip->playback_substream = substream;
399 runtime->hw = snd_als300_playback_hw;
400 runtime->private_data = data;
401 data->control_register = PLAYBACK_CONTROL;
402 data->block_counter_register = PLAYBACK_BLOCK_COUNTER;
403 snd_als300_dbgcallleave();
404 return 0;
405}
406
407static int snd_als300_playback_close(struct snd_pcm_substream *substream)
408{
409 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
410 struct snd_als300_substream_data *data;
411
412 data = substream->runtime->private_data;
413 snd_als300_dbgcallenter();
414 kfree(data);
415 chip->playback_substream = NULL;
416 snd_pcm_lib_free_pages(substream);
417 snd_als300_dbgcallleave();
418 return 0;
419}
420
421static int snd_als300_capture_open(struct snd_pcm_substream *substream)
422{
423 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
424 struct snd_pcm_runtime *runtime = substream->runtime;
425 struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
426 GFP_KERNEL);
427
428 snd_als300_dbgcallenter();
429 chip->capture_substream = substream;
430 runtime->hw = snd_als300_capture_hw;
431 runtime->private_data = data;
432 data->control_register = RECORD_CONTROL;
433 data->block_counter_register = RECORD_BLOCK_COUNTER;
434 snd_als300_dbgcallleave();
435 return 0;
436}
437
438static int snd_als300_capture_close(struct snd_pcm_substream *substream)
439{
440 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
441 struct snd_als300_substream_data *data;
442
443 data = substream->runtime->private_data;
444 snd_als300_dbgcallenter();
445 kfree(data);
446 chip->capture_substream = NULL;
447 snd_pcm_lib_free_pages(substream);
448 snd_als300_dbgcallleave();
449 return 0;
450}
451
452static int snd_als300_pcm_hw_params(struct snd_pcm_substream *substream,
453 struct snd_pcm_hw_params *hw_params)
454{
455 return snd_pcm_lib_malloc_pages(substream,
456 params_buffer_bytes(hw_params));
457}
458
459static int snd_als300_pcm_hw_free(struct snd_pcm_substream *substream)
460{
461 return snd_pcm_lib_free_pages(substream);
462}
463
464static int snd_als300_playback_prepare(struct snd_pcm_substream *substream)
465{
466 u32 tmp;
467 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
468 struct snd_pcm_runtime *runtime = substream->runtime;
469 unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
470 unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
471
472 snd_als300_dbgcallenter();
473 spin_lock_irq(&chip->reg_lock);
474 tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
475 tmp &= ~TRANSFER_START;
476
477 snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n",
478 period_bytes, buffer_bytes);
479
480 /* set block size */
481 tmp &= 0xffff0000;
482 tmp |= period_bytes - 1;
483 snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL, tmp);
484
485 /* set dma area */
486 snd_als300_gcr_write(chip->port, PLAYBACK_START,
487 runtime->dma_addr);
488 snd_als300_gcr_write(chip->port, PLAYBACK_END,
489 runtime->dma_addr + buffer_bytes - 1);
490 spin_unlock_irq(&chip->reg_lock);
491 snd_als300_dbgcallleave();
492 return 0;
493}
494
495static int snd_als300_capture_prepare(struct snd_pcm_substream *substream)
496{
497 u32 tmp;
498 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
499 struct snd_pcm_runtime *runtime = substream->runtime;
500 unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
501 unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
502
503 snd_als300_dbgcallenter();
504 spin_lock_irq(&chip->reg_lock);
505 tmp = snd_als300_gcr_read(chip->port, RECORD_CONTROL);
506 tmp &= ~TRANSFER_START;
507
508 snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n", period_bytes,
509 buffer_bytes);
510
511 /* set block size */
512 tmp &= 0xffff0000;
513 tmp |= period_bytes - 1;
514
515 /* set dma area */
516 snd_als300_gcr_write(chip->port, RECORD_CONTROL, tmp);
517 snd_als300_gcr_write(chip->port, RECORD_START,
518 runtime->dma_addr);
519 snd_als300_gcr_write(chip->port, RECORD_END,
520 runtime->dma_addr + buffer_bytes - 1);
521 spin_unlock_irq(&chip->reg_lock);
522 snd_als300_dbgcallleave();
523 return 0;
524}
525
526static int snd_als300_trigger(struct snd_pcm_substream *substream, int cmd)
527{
528 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
529 u32 tmp;
530 struct snd_als300_substream_data *data;
531 unsigned short reg;
532 int ret = 0;
533
534 data = substream->runtime->private_data;
535 reg = data->control_register;
536
537 snd_als300_dbgcallenter();
538 spin_lock(&chip->reg_lock);
539 switch (cmd) {
540 case SNDRV_PCM_TRIGGER_START:
541 case SNDRV_PCM_TRIGGER_RESUME:
542 tmp = snd_als300_gcr_read(chip->port, reg);
543 data->period_flipflop = 1;
544 snd_als300_gcr_write(chip->port, reg, tmp | TRANSFER_START);
545 snd_als300_dbgplay("TRIGGER START\n");
546 break;
547 case SNDRV_PCM_TRIGGER_STOP:
548 case SNDRV_PCM_TRIGGER_SUSPEND:
549 tmp = snd_als300_gcr_read(chip->port, reg);
550 snd_als300_gcr_write(chip->port, reg, tmp & ~TRANSFER_START);
551 snd_als300_dbgplay("TRIGGER STOP\n");
552 break;
553 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
554 tmp = snd_als300_gcr_read(chip->port, reg);
555 snd_als300_gcr_write(chip->port, reg, tmp | FIFO_PAUSE);
556 snd_als300_dbgplay("TRIGGER PAUSE\n");
557 break;
558 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
559 tmp = snd_als300_gcr_read(chip->port, reg);
560 snd_als300_gcr_write(chip->port, reg, tmp & ~FIFO_PAUSE);
561 snd_als300_dbgplay("TRIGGER RELEASE\n");
562 break;
563 default:
564 snd_als300_dbgplay("TRIGGER INVALID\n");
565 ret = -EINVAL;
566 }
567 spin_unlock(&chip->reg_lock);
568 snd_als300_dbgcallleave();
569 return ret;
570}
571
572static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream)
573{
574 u16 current_ptr;
575 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
576 struct snd_als300_substream_data *data;
577 unsigned short period_bytes;
578
579 data = substream->runtime->private_data;
580 period_bytes = snd_pcm_lib_period_bytes(substream);
581
582 snd_als300_dbgcallenter();
583 spin_lock(&chip->reg_lock);
584 current_ptr = (u16) snd_als300_gcr_read(chip->port,
585 data->block_counter_register) + 4;
586 spin_unlock(&chip->reg_lock);
587 if (current_ptr > period_bytes)
588 current_ptr = 0;
589 else
590 current_ptr = period_bytes - current_ptr;
591
592 if (data->period_flipflop == 0)
593 current_ptr += period_bytes;
594 snd_als300_dbgplay("Pointer (bytes): %d\n", current_ptr);
595 snd_als300_dbgcallleave();
596 return bytes_to_frames(substream->runtime, current_ptr);
597}
598
599static struct snd_pcm_ops snd_als300_playback_ops = {
600 .open = snd_als300_playback_open,
601 .close = snd_als300_playback_close,
602 .ioctl = snd_pcm_lib_ioctl,
603 .hw_params = snd_als300_pcm_hw_params,
604 .hw_free = snd_als300_pcm_hw_free,
605 .prepare = snd_als300_playback_prepare,
606 .trigger = snd_als300_trigger,
607 .pointer = snd_als300_pointer,
608};
609
610static struct snd_pcm_ops snd_als300_capture_ops = {
611 .open = snd_als300_capture_open,
612 .close = snd_als300_capture_close,
613 .ioctl = snd_pcm_lib_ioctl,
614 .hw_params = snd_als300_pcm_hw_params,
615 .hw_free = snd_als300_pcm_hw_free,
616 .prepare = snd_als300_capture_prepare,
617 .trigger = snd_als300_trigger,
618 .pointer = snd_als300_pointer,
619};
620
621static int __devinit snd_als300_new_pcm(struct snd_als300 *chip)
622{
623 struct snd_pcm *pcm;
624 int err;
625
626 snd_als300_dbgcallenter();
627 err = snd_pcm_new(chip->card, "ALS300", 0, 1, 1, &pcm);
628 if (err < 0)
629 return err;
630 pcm->private_data = chip;
631 strcpy(pcm->name, "ALS300");
632 chip->pcm = pcm;
633
634 /* set operators */
635 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
636 &snd_als300_playback_ops);
637 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
638 &snd_als300_capture_ops);
639
640 /* pre-allocation of buffers */
641 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
642 snd_dma_pci_data(chip->pci), 64*1024, 64*1024);
643 snd_als300_dbgcallleave();
644 return 0;
645}
646
647static void snd_als300_init(struct snd_als300 *chip)
648{
649 unsigned long flags;
650 u32 tmp;
651
652 snd_als300_dbgcallenter();
653 spin_lock_irqsave(&chip->reg_lock, flags);
654 chip->revision = (snd_als300_gcr_read(chip->port, MISC_CONTROL) >> 16)
655 & 0x0000000F;
656 /* Setup DRAM */
657 tmp = snd_als300_gcr_read(chip->port, DRAM_WRITE_CONTROL);
658 snd_als300_gcr_write(chip->port, DRAM_WRITE_CONTROL,
659 (tmp | DRAM_MODE_2)
660 & ~WRITE_TRANS_START);
661
662 /* Enable IRQ output */
663 snd_als300_set_irq_flag(chip, IRQ_ENABLE);
664
665 /* Unmute hardware devices so their outputs get routed to
666 * the onboard mixer */
667 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
668 snd_als300_gcr_write(chip->port, MISC_CONTROL,
669 tmp | VMUTE_NORMAL | MMUTE_NORMAL);
670
671 /* Reset volumes */
672 snd_als300_gcr_write(chip->port, MUS_VOC_VOL, 0);
673
674 /* Make sure playback transfer is stopped */
675 tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
676 snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL,
677 tmp & ~TRANSFER_START);
678 spin_unlock_irqrestore(&chip->reg_lock, flags);
679 snd_als300_dbgcallleave();
680}
681
682static int __devinit snd_als300_create(struct snd_card *card,
683 struct pci_dev *pci, int chip_type,
684 struct snd_als300 **rchip)
685{
686 struct snd_als300 *chip;
687 void *irq_handler;
688 int err;
689
690 static struct snd_device_ops ops = {
691 .dev_free = snd_als300_dev_free,
692 };
693 *rchip = NULL;
694
695 snd_als300_dbgcallenter();
696 if ((err = pci_enable_device(pci)) < 0)
697 return err;
698
699 if (pci_set_dma_mask(pci, DMA_BIT_MASK(28)) < 0 ||
700 pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(28)) < 0) {
701 printk(KERN_ERR "error setting 28bit DMA mask\n");
702 pci_disable_device(pci);
703 return -ENXIO;
704 }
705 pci_set_master(pci);
706
707 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
708 if (chip == NULL) {
709 pci_disable_device(pci);
710 return -ENOMEM;
711 }
712
713 chip->card = card;
714 chip->pci = pci;
715 chip->irq = -1;
716 chip->chip_type = chip_type;
717 spin_lock_init(&chip->reg_lock);
718
719 if ((err = pci_request_regions(pci, "ALS300")) < 0) {
720 kfree(chip);
721 pci_disable_device(pci);
722 return err;
723 }
724 chip->port = pci_resource_start(pci, 0);
725
726 if (chip->chip_type == DEVICE_ALS300_PLUS)
727 irq_handler = snd_als300plus_interrupt;
728 else
729 irq_handler = snd_als300_interrupt;
730
731 if (request_irq(pci->irq, irq_handler, IRQF_SHARED,
732 KBUILD_MODNAME, chip)) {
733 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
734 snd_als300_free(chip);
735 return -EBUSY;
736 }
737 chip->irq = pci->irq;
738
739
740 snd_als300_init(chip);
741
742 err = snd_als300_ac97(chip);
743 if (err < 0) {
744 snd_printk(KERN_WARNING "Could not create ac97\n");
745 snd_als300_free(chip);
746 return err;
747 }
748
749 if ((err = snd_als300_new_pcm(chip)) < 0) {
750 snd_printk(KERN_WARNING "Could not create PCM\n");
751 snd_als300_free(chip);
752 return err;
753 }
754
755 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
756 chip, &ops)) < 0) {
757 snd_als300_free(chip);
758 return err;
759 }
760
761 snd_card_set_dev(card, &pci->dev);
762
763 *rchip = chip;
764 snd_als300_dbgcallleave();
765 return 0;
766}
767
768#ifdef CONFIG_PM
769static int snd_als300_suspend(struct pci_dev *pci, pm_message_t state)
770{
771 struct snd_card *card = pci_get_drvdata(pci);
772 struct snd_als300 *chip = card->private_data;
773
774 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
775 snd_pcm_suspend_all(chip->pcm);
776 snd_ac97_suspend(chip->ac97);
777
778 pci_disable_device(pci);
779 pci_save_state(pci);
780 pci_set_power_state(pci, pci_choose_state(pci, state));
781 return 0;
782}
783
784static int snd_als300_resume(struct pci_dev *pci)
785{
786 struct snd_card *card = pci_get_drvdata(pci);
787 struct snd_als300 *chip = card->private_data;
788
789 pci_set_power_state(pci, PCI_D0);
790 pci_restore_state(pci);
791 if (pci_enable_device(pci) < 0) {
792 printk(KERN_ERR "als300: pci_enable_device failed, "
793 "disabling device\n");
794 snd_card_disconnect(card);
795 return -EIO;
796 }
797 pci_set_master(pci);
798
799 snd_als300_init(chip);
800 snd_ac97_resume(chip->ac97);
801
802 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
803 return 0;
804}
805#endif
806
807static int __devinit snd_als300_probe(struct pci_dev *pci,
808 const struct pci_device_id *pci_id)
809{
810 static int dev;
811 struct snd_card *card;
812 struct snd_als300 *chip;
813 int err, chip_type;
814
815 if (dev >= SNDRV_CARDS)
816 return -ENODEV;
817 if (!enable[dev]) {
818 dev++;
819 return -ENOENT;
820 }
821
822 err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
823
824 if (err < 0)
825 return err;
826
827 chip_type = pci_id->driver_data;
828
829 if ((err = snd_als300_create(card, pci, chip_type, &chip)) < 0) {
830 snd_card_free(card);
831 return err;
832 }
833 card->private_data = chip;
834
835 strcpy(card->driver, "ALS300");
836 if (chip->chip_type == DEVICE_ALS300_PLUS)
837 /* don't know much about ALS300+ yet
838 * print revision number for now */
839 sprintf(card->shortname, "ALS300+ (Rev. %d)", chip->revision);
840 else
841 sprintf(card->shortname, "ALS300 (Rev. %c)", 'A' +
842 chip->revision - 1);
843 sprintf(card->longname, "%s at 0x%lx irq %i",
844 card->shortname, chip->port, chip->irq);
845
846 if ((err = snd_card_register(card)) < 0) {
847 snd_card_free(card);
848 return err;
849 }
850 pci_set_drvdata(pci, card);
851 dev++;
852 return 0;
853}
854
855static struct pci_driver als300_driver = {
856 .name = KBUILD_MODNAME,
857 .id_table = snd_als300_ids,
858 .probe = snd_als300_probe,
859 .remove = __devexit_p(snd_als300_remove),
860#ifdef CONFIG_PM
861 .suspend = snd_als300_suspend,
862 .resume = snd_als300_resume,
863#endif
864};
865
866module_pci_driver(als300_driver);