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
84 enum {DEVICE_ALS300, DEVICE_ALS300_PLUS};
85
86 MODULE_AUTHOR("Ash Willis <ashwillis@programmer.net>");
87 MODULE_DESCRIPTION("Avance Logic ALS300");
88 MODULE_LICENSE("GPL");
89
90 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
91 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
92 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
93
94 module_param_array(index, int, NULL, 0444);
95 MODULE_PARM_DESC(index, "Index value for ALS300 sound card.");
96 module_param_array(id, charp, NULL, 0444);
97 MODULE_PARM_DESC(id, "ID string for ALS300 sound card.");
98 module_param_array(enable, bool, NULL, 0444);
99 MODULE_PARM_DESC(enable, "Enable ALS300 sound card.");
100
101 struct 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
123 struct snd_als300_substream_data {
124 int period_flipflop;
125 int control_register;
126 int block_counter_register;
127 };
128
129 static 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
135 MODULE_DEVICE_TABLE(pci, snd_als300_ids);
136
snd_als300_gcr_read(unsigned long port,unsigned short reg)137 static 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
snd_als300_gcr_write(unsigned long port,unsigned short reg,u32 val)143 static 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 */
snd_als300_set_irq_flag(struct snd_als300 * chip,int cmd)151 static 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
snd_als300_free(struct snd_card * card)166 static 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
snd_als300_interrupt(int irq,void * dev_id)173 static 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
snd_als300plus_interrupt(int irq,void * dev_id)204 static 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
snd_als300_ac97_read(struct snd_ac97 * ac97,unsigned short reg)241 static 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
snd_als300_ac97_write(struct snd_ac97 * ac97,unsigned short reg,unsigned short val)262 static 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
snd_als300_ac97(struct snd_als300 * chip)276 static 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 */
303 static 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
322 static 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
snd_als300_playback_open(struct snd_pcm_substream * substream)341 static 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_obj(*data);
346
347 if (!data)
348 return -ENOMEM;
349 chip->playback_substream = substream;
350 runtime->hw = snd_als300_playback_hw;
351 runtime->private_data = data;
352 data->control_register = PLAYBACK_CONTROL;
353 data->block_counter_register = PLAYBACK_BLOCK_COUNTER;
354 return 0;
355 }
356
snd_als300_playback_close(struct snd_pcm_substream * substream)357 static int snd_als300_playback_close(struct snd_pcm_substream *substream)
358 {
359 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
360 struct snd_als300_substream_data *data;
361
362 data = substream->runtime->private_data;
363 kfree(data);
364 chip->playback_substream = NULL;
365 return 0;
366 }
367
snd_als300_capture_open(struct snd_pcm_substream * substream)368 static int snd_als300_capture_open(struct snd_pcm_substream *substream)
369 {
370 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
371 struct snd_pcm_runtime *runtime = substream->runtime;
372 struct snd_als300_substream_data *data = kzalloc_obj(*data);
373
374 if (!data)
375 return -ENOMEM;
376 chip->capture_substream = substream;
377 runtime->hw = snd_als300_capture_hw;
378 runtime->private_data = data;
379 data->control_register = RECORD_CONTROL;
380 data->block_counter_register = RECORD_BLOCK_COUNTER;
381 return 0;
382 }
383
snd_als300_capture_close(struct snd_pcm_substream * substream)384 static int snd_als300_capture_close(struct snd_pcm_substream *substream)
385 {
386 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
387 struct snd_als300_substream_data *data;
388
389 data = substream->runtime->private_data;
390 kfree(data);
391 chip->capture_substream = NULL;
392 return 0;
393 }
394
snd_als300_playback_prepare(struct snd_pcm_substream * substream)395 static int snd_als300_playback_prepare(struct snd_pcm_substream *substream)
396 {
397 u32 tmp;
398 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
399 struct snd_pcm_runtime *runtime = substream->runtime;
400 unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
401 unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
402
403 guard(spinlock_irq)(&chip->reg_lock);
404 tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
405 tmp &= ~TRANSFER_START;
406
407 snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n",
408 period_bytes, buffer_bytes);
409
410 /* set block size */
411 tmp &= 0xffff0000;
412 tmp |= period_bytes - 1;
413 snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL, tmp);
414
415 /* set dma area */
416 snd_als300_gcr_write(chip->port, PLAYBACK_START,
417 runtime->dma_addr);
418 snd_als300_gcr_write(chip->port, PLAYBACK_END,
419 runtime->dma_addr + buffer_bytes - 1);
420 return 0;
421 }
422
snd_als300_capture_prepare(struct snd_pcm_substream * substream)423 static int snd_als300_capture_prepare(struct snd_pcm_substream *substream)
424 {
425 u32 tmp;
426 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
427 struct snd_pcm_runtime *runtime = substream->runtime;
428 unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
429 unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
430
431 guard(spinlock_irq)(&chip->reg_lock);
432 tmp = snd_als300_gcr_read(chip->port, RECORD_CONTROL);
433 tmp &= ~TRANSFER_START;
434
435 snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n", period_bytes,
436 buffer_bytes);
437
438 /* set block size */
439 tmp &= 0xffff0000;
440 tmp |= period_bytes - 1;
441
442 /* set dma area */
443 snd_als300_gcr_write(chip->port, RECORD_CONTROL, tmp);
444 snd_als300_gcr_write(chip->port, RECORD_START,
445 runtime->dma_addr);
446 snd_als300_gcr_write(chip->port, RECORD_END,
447 runtime->dma_addr + buffer_bytes - 1);
448 return 0;
449 }
450
snd_als300_trigger(struct snd_pcm_substream * substream,int cmd)451 static int snd_als300_trigger(struct snd_pcm_substream *substream, int cmd)
452 {
453 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
454 u32 tmp;
455 struct snd_als300_substream_data *data;
456 unsigned short reg;
457 int ret = 0;
458
459 data = substream->runtime->private_data;
460 reg = data->control_register;
461
462 guard(spinlock)(&chip->reg_lock);
463 switch (cmd) {
464 case SNDRV_PCM_TRIGGER_START:
465 case SNDRV_PCM_TRIGGER_RESUME:
466 tmp = snd_als300_gcr_read(chip->port, reg);
467 data->period_flipflop = 1;
468 snd_als300_gcr_write(chip->port, reg, tmp | TRANSFER_START);
469 snd_als300_dbgplay("TRIGGER START\n");
470 break;
471 case SNDRV_PCM_TRIGGER_STOP:
472 case SNDRV_PCM_TRIGGER_SUSPEND:
473 tmp = snd_als300_gcr_read(chip->port, reg);
474 snd_als300_gcr_write(chip->port, reg, tmp & ~TRANSFER_START);
475 snd_als300_dbgplay("TRIGGER STOP\n");
476 break;
477 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
478 tmp = snd_als300_gcr_read(chip->port, reg);
479 snd_als300_gcr_write(chip->port, reg, tmp | FIFO_PAUSE);
480 snd_als300_dbgplay("TRIGGER PAUSE\n");
481 break;
482 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
483 tmp = snd_als300_gcr_read(chip->port, reg);
484 snd_als300_gcr_write(chip->port, reg, tmp & ~FIFO_PAUSE);
485 snd_als300_dbgplay("TRIGGER RELEASE\n");
486 break;
487 default:
488 snd_als300_dbgplay("TRIGGER INVALID\n");
489 ret = -EINVAL;
490 }
491 return ret;
492 }
493
snd_als300_pointer(struct snd_pcm_substream * substream)494 static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream)
495 {
496 u16 current_ptr;
497 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
498 struct snd_als300_substream_data *data;
499 unsigned short period_bytes;
500
501 data = substream->runtime->private_data;
502 period_bytes = snd_pcm_lib_period_bytes(substream);
503
504 scoped_guard(spinlock, &chip->reg_lock) {
505 current_ptr = (u16) snd_als300_gcr_read(chip->port,
506 data->block_counter_register) + 4;
507 }
508 if (current_ptr > period_bytes)
509 current_ptr = 0;
510 else
511 current_ptr = period_bytes - current_ptr;
512
513 if (data->period_flipflop == 0)
514 current_ptr += period_bytes;
515 snd_als300_dbgplay("Pointer (bytes): %d\n", current_ptr);
516 return bytes_to_frames(substream->runtime, current_ptr);
517 }
518
519 static const struct snd_pcm_ops snd_als300_playback_ops = {
520 .open = snd_als300_playback_open,
521 .close = snd_als300_playback_close,
522 .prepare = snd_als300_playback_prepare,
523 .trigger = snd_als300_trigger,
524 .pointer = snd_als300_pointer,
525 };
526
527 static const struct snd_pcm_ops snd_als300_capture_ops = {
528 .open = snd_als300_capture_open,
529 .close = snd_als300_capture_close,
530 .prepare = snd_als300_capture_prepare,
531 .trigger = snd_als300_trigger,
532 .pointer = snd_als300_pointer,
533 };
534
snd_als300_new_pcm(struct snd_als300 * chip)535 static int snd_als300_new_pcm(struct snd_als300 *chip)
536 {
537 struct snd_pcm *pcm;
538 int err;
539
540 err = snd_pcm_new(chip->card, "ALS300", 0, 1, 1, &pcm);
541 if (err < 0)
542 return err;
543 pcm->private_data = chip;
544 strscpy(pcm->name, "ALS300");
545 chip->pcm = pcm;
546
547 /* set operators */
548 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
549 &snd_als300_playback_ops);
550 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
551 &snd_als300_capture_ops);
552
553 /* pre-allocation of buffers */
554 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
555 64*1024, 64*1024);
556 return 0;
557 }
558
snd_als300_init(struct snd_als300 * chip)559 static void snd_als300_init(struct snd_als300 *chip)
560 {
561 u32 tmp;
562
563 guard(spinlock_irqsave)(&chip->reg_lock);
564 chip->revision = (snd_als300_gcr_read(chip->port, MISC_CONTROL) >> 16)
565 & 0x0000000F;
566 /* Setup DRAM */
567 tmp = snd_als300_gcr_read(chip->port, DRAM_WRITE_CONTROL);
568 snd_als300_gcr_write(chip->port, DRAM_WRITE_CONTROL,
569 (tmp | DRAM_MODE_2)
570 & ~WRITE_TRANS_START);
571
572 /* Enable IRQ output */
573 snd_als300_set_irq_flag(chip, IRQ_ENABLE);
574
575 /* Unmute hardware devices so their outputs get routed to
576 * the onboard mixer */
577 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
578 snd_als300_gcr_write(chip->port, MISC_CONTROL,
579 tmp | VMUTE_NORMAL | MMUTE_NORMAL);
580
581 /* Reset volumes */
582 snd_als300_gcr_write(chip->port, MUS_VOC_VOL, 0);
583
584 /* Make sure playback transfer is stopped */
585 tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
586 snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL,
587 tmp & ~TRANSFER_START);
588 }
589
snd_als300_create(struct snd_card * card,struct pci_dev * pci,int chip_type)590 static int snd_als300_create(struct snd_card *card,
591 struct pci_dev *pci, int chip_type)
592 {
593 struct snd_als300 *chip = card->private_data;
594 void *irq_handler;
595 int err;
596
597 err = pcim_enable_device(pci);
598 if (err < 0)
599 return err;
600
601 if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(28))) {
602 dev_err(card->dev, "error setting 28bit DMA mask\n");
603 return -ENXIO;
604 }
605 pci_set_master(pci);
606
607 chip->card = card;
608 chip->pci = pci;
609 chip->irq = -1;
610 chip->chip_type = chip_type;
611 spin_lock_init(&chip->reg_lock);
612
613 err = pcim_request_all_regions(pci, "ALS300");
614 if (err < 0)
615 return err;
616
617 chip->port = pci_resource_start(pci, 0);
618
619 if (chip->chip_type == DEVICE_ALS300_PLUS)
620 irq_handler = snd_als300plus_interrupt;
621 else
622 irq_handler = snd_als300_interrupt;
623
624 if (devm_request_irq(&pci->dev, pci->irq, irq_handler, IRQF_SHARED,
625 KBUILD_MODNAME, chip)) {
626 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
627 return -EBUSY;
628 }
629 chip->irq = pci->irq;
630 card->sync_irq = chip->irq;
631 card->private_free = snd_als300_free;
632
633 snd_als300_init(chip);
634
635 err = snd_als300_ac97(chip);
636 if (err < 0) {
637 dev_err(card->dev, "Could not create ac97\n");
638 return err;
639 }
640
641 err = snd_als300_new_pcm(chip);
642 if (err < 0) {
643 dev_err(card->dev, "Could not create PCM\n");
644 return err;
645 }
646
647 return 0;
648 }
649
snd_als300_suspend(struct device * dev)650 static int snd_als300_suspend(struct device *dev)
651 {
652 struct snd_card *card = dev_get_drvdata(dev);
653 struct snd_als300 *chip = card->private_data;
654
655 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
656 snd_ac97_suspend(chip->ac97);
657 return 0;
658 }
659
snd_als300_resume(struct device * dev)660 static int snd_als300_resume(struct device *dev)
661 {
662 struct snd_card *card = dev_get_drvdata(dev);
663 struct snd_als300 *chip = card->private_data;
664
665 snd_als300_init(chip);
666 snd_ac97_resume(chip->ac97);
667
668 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
669 return 0;
670 }
671
672 static DEFINE_SIMPLE_DEV_PM_OPS(snd_als300_pm, snd_als300_suspend, snd_als300_resume);
673
snd_als300_probe(struct pci_dev * pci,const struct pci_device_id * pci_id)674 static int snd_als300_probe(struct pci_dev *pci,
675 const struct pci_device_id *pci_id)
676 {
677 static int dev;
678 struct snd_card *card;
679 struct snd_als300 *chip;
680 int err, chip_type;
681
682 if (dev >= SNDRV_CARDS)
683 return -ENODEV;
684 if (!enable[dev]) {
685 dev++;
686 return -ENOENT;
687 }
688
689 err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
690 sizeof(*chip), &card);
691 if (err < 0)
692 return err;
693 chip = card->private_data;
694
695 chip_type = pci_id->driver_data;
696
697 err = snd_als300_create(card, pci, chip_type);
698 if (err < 0)
699 goto error;
700
701 strscpy(card->driver, "ALS300");
702 if (chip->chip_type == DEVICE_ALS300_PLUS)
703 /* don't know much about ALS300+ yet
704 * print revision number for now */
705 sprintf(card->shortname, "ALS300+ (Rev. %d)", chip->revision);
706 else
707 sprintf(card->shortname, "ALS300 (Rev. %c)", 'A' +
708 chip->revision - 1);
709 sprintf(card->longname, "%s at 0x%lx irq %i",
710 card->shortname, chip->port, chip->irq);
711
712 err = snd_card_register(card);
713 if (err < 0)
714 goto error;
715
716 pci_set_drvdata(pci, card);
717 dev++;
718 return 0;
719
720 error:
721 snd_card_free(card);
722 return err;
723 }
724
725 static struct pci_driver als300_driver = {
726 .name = KBUILD_MODNAME,
727 .id_table = snd_als300_ids,
728 .probe = snd_als300_probe,
729 .driver = {
730 .pm = &snd_als300_pm,
731 },
732 };
733
734 module_pci_driver(als300_driver);
735