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ALSA: ak4531: Fix assignment in if condition
[linux-2.6-block.git] / sound / pci / als300.c
CommitLineData
1a59d1b8 1// SPDX-License-Identifier: GPL-2.0-or-later
b3a70d5e
AW		 2/*
3 * als300.c - driver for Avance Logic ALS300/ALS300+ soundcards.
4 * Copyright (C) 2005 by Ash Willis <ashwillis@programmer.net>
5 *
b3a70d5e
AW		 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
b3a70d5e
AW		 20#include <linux/delay.h>
21#include <linux/init.h>
65a77217 22#include <linux/module.h>
b3a70d5e 23#include <linux/pci.h>
56b146d3 24#include <linux/dma-mapping.h>
b3a70d5e
AW		 25#include <linux/interrupt.h>
26#include <linux/slab.h>
6cbbfe1c 27#include <linux/io.h>
b3a70d5e
AW		 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
65ff2357 76#define DEBUG_PLAY_REC 0
b3a70d5e 77
b3a70d5e
AW		 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");
b3a70d5e
AW		 89
90static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
91static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
cde94480
TI		 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.");
b3a70d5e
AW		 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
9baa3c34 129static const struct pci_device_id snd_als300_ids[] = {
b3a70d5e
AW		 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);
b3a70d5e
AW		 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);
b3a70d5e
AW		 164}
165
166static int snd_als300_free(struct snd_als300 *chip)
167{
b3a70d5e
AW		 168 snd_als300_set_irq_flag(chip, IRQ_DISABLE);
169 if (chip->irq >= 0)
437a5a46 170 free_irq(chip->irq, chip);
b3a70d5e
AW		 171 pci_release_regions(chip->pci);
172 pci_disable_device(chip->pci);
173 kfree(chip);
b3a70d5e
AW		 174 return 0;
175}
176
177static int snd_als300_dev_free(struct snd_device *device)
178{
179 struct snd_als300 *chip = device->device_data;
180 return snd_als300_free(chip);
181}
182
7d12e780 183static irqreturn_t snd_als300_interrupt(int irq, void *dev_id)
b3a70d5e
AW		 184{
185 u8 status;
186 struct snd_als300 *chip = dev_id;
187 struct snd_als300_substream_data *data;
188
189 status = inb(chip->port+ALS300_IRQ_STATUS);
190 if (!status) /* shared IRQ, for different device?? Exit ASAP! */
191 return IRQ_NONE;
192
193 /* ACK everything ASAP */
194 outb(status, chip->port+ALS300_IRQ_STATUS);
195 if (status & IRQ_PLAYBACK) {
196 if (chip->pcm && chip->playback_substream) {
197 data = chip->playback_substream->runtime->private_data;
198 data->period_flipflop ^= 1;
199 snd_pcm_period_elapsed(chip->playback_substream);
200 snd_als300_dbgplay("IRQ_PLAYBACK\n");
201 }
202 }
203 if (status & IRQ_CAPTURE) {
204 if (chip->pcm && chip->capture_substream) {
205 data = chip->capture_substream->runtime->private_data;
206 data->period_flipflop ^= 1;
207 snd_pcm_period_elapsed(chip->capture_substream);
208 snd_als300_dbgplay("IRQ_CAPTURE\n");
209 }
210 }
211 return IRQ_HANDLED;
212}
213
7d12e780 214static irqreturn_t snd_als300plus_interrupt(int irq, void *dev_id)
b3a70d5e
AW		 215{
216 u8 general, mpu, dram;
217 struct snd_als300 *chip = dev_id;
218 struct snd_als300_substream_data *data;
219
220 general = inb(chip->port+ALS300P_IRQ_STATUS);
221 mpu = inb(chip->port+MPU_IRQ_STATUS);
222 dram = inb(chip->port+ALS300P_DRAM_IRQ_STATUS);
223
224 /* shared IRQ, for different device?? Exit ASAP! */
225 if ((general == 0) && ((mpu & 0x80) == 0) && ((dram & 0x01) == 0))
226 return IRQ_NONE;
227
228 if (general & IRQ_PLAYBACK) {
229 if (chip->pcm && chip->playback_substream) {
230 outb(IRQ_PLAYBACK, chip->port+ALS300P_IRQ_STATUS);
231 data = chip->playback_substream->runtime->private_data;
232 data->period_flipflop ^= 1;
233 snd_pcm_period_elapsed(chip->playback_substream);
234 snd_als300_dbgplay("IRQ_PLAYBACK\n");
235 }
236 }
237 if (general & IRQ_CAPTURE) {
238 if (chip->pcm && chip->capture_substream) {
239 outb(IRQ_CAPTURE, chip->port+ALS300P_IRQ_STATUS);
240 data = chip->capture_substream->runtime->private_data;
241 data->period_flipflop ^= 1;
242 snd_pcm_period_elapsed(chip->capture_substream);
243 snd_als300_dbgplay("IRQ_CAPTURE\n");
244 }
245 }
246 /* FIXME: Ack other interrupt types. Not important right now as
247 * those other devices aren't enabled. */
248 return IRQ_HANDLED;
249}
250
e23e7a14 251static void snd_als300_remove(struct pci_dev *pci)
b3a70d5e 252{
b3a70d5e 253 snd_card_free(pci_get_drvdata(pci));
b3a70d5e
AW		 254}
255
256static unsigned short snd_als300_ac97_read(struct snd_ac97 *ac97,
257 unsigned short reg)
258{
259 int i;
260 struct snd_als300 *chip = ac97->private_data;
261
262 for (i = 0; i < 1000; i++) {
263 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
264 break;
265 udelay(10);
266 }
267 outl((reg << 24) | (1 << 31), chip->port+AC97_ACCESS);
268
269 for (i = 0; i < 1000; i++) {
270 if ((inb(chip->port+AC97_STATUS) & (AC97_DATA_AVAIL)) != 0)
271 break;
272 udelay(10);
273 }
274 return inw(chip->port+AC97_READ);
275}
276
277static void snd_als300_ac97_write(struct snd_ac97 *ac97,
278 unsigned short reg, unsigned short val)
279{
280 int i;
281 struct snd_als300 *chip = ac97->private_data;
282
283 for (i = 0; i < 1000; i++) {
284 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
285 break;
286 udelay(10);
287 }
288 outl((reg << 24) | val, chip->port+AC97_ACCESS);
289}
290
291static int snd_als300_ac97(struct snd_als300 *chip)
292{
293 struct snd_ac97_bus *bus;
294 struct snd_ac97_template ac97;
295 int err;
51055da5 296 static const struct snd_ac97_bus_ops ops = {
b3a70d5e
AW		 297 .write = snd_als300_ac97_write,
298 .read = snd_als300_ac97_read,
299 };
300
b3a70d5e
AW		 301 if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus)) < 0)
302 return err;
303
304 memset(&ac97, 0, sizeof(ac97));
305 ac97.private_data = chip;
306
b3a70d5e
AW		 307 return snd_ac97_mixer(bus, &ac97, &chip->ac97);
308}
309
310/* hardware definition
311 *
312 * In AC97 mode, we always use 48k/16bit/stereo.
313 * Any request to change data type is ignored by
314 * the card when it is running outside of legacy
315 * mode.
316 */
dee49895 317static const struct snd_pcm_hardware snd_als300_playback_hw =
b3a70d5e
AW		 318{
319 .info = (SNDRV_PCM_INFO_MMAP |
320 SNDRV_PCM_INFO_INTERLEAVED |
321 SNDRV_PCM_INFO_PAUSE |
322 SNDRV_PCM_INFO_MMAP_VALID),
323 .formats = SNDRV_PCM_FMTBIT_S16,
324 .rates = SNDRV_PCM_RATE_48000,
325 .rate_min = 48000,
326 .rate_max = 48000,
327 .channels_min = 2,
328 .channels_max = 2,
329 .buffer_bytes_max = 64 * 1024,
330 .period_bytes_min = 64,
331 .period_bytes_max = 32 * 1024,
332 .periods_min = 2,
333 .periods_max = 2,
334};
335
dee49895 336static const struct snd_pcm_hardware snd_als300_capture_hw =
b3a70d5e
AW		 337{
338 .info = (SNDRV_PCM_INFO_MMAP |
339 SNDRV_PCM_INFO_INTERLEAVED |
340 SNDRV_PCM_INFO_PAUSE |
341 SNDRV_PCM_INFO_MMAP_VALID),
342 .formats = SNDRV_PCM_FMTBIT_S16,
343 .rates = SNDRV_PCM_RATE_48000,
344 .rate_min = 48000,
345 .rate_max = 48000,
346 .channels_min = 2,
347 .channels_max = 2,
348 .buffer_bytes_max = 64 * 1024,
349 .period_bytes_min = 64,
350 .period_bytes_max = 32 * 1024,
351 .periods_min = 2,
352 .periods_max = 2,
353};
354
355static int snd_als300_playback_open(struct snd_pcm_substream *substream)
356{
357 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
358 struct snd_pcm_runtime *runtime = substream->runtime;
359 struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
360 GFP_KERNEL);
361
21b3de88
DK		 362 if (!data)
363 return -ENOMEM;
b3a70d5e
AW		 364 chip->playback_substream = substream;
365 runtime->hw = snd_als300_playback_hw;
366 runtime->private_data = data;
367 data->control_register = PLAYBACK_CONTROL;
368 data->block_counter_register = PLAYBACK_BLOCK_COUNTER;
b3a70d5e
AW		 369 return 0;
370}
371
372static int snd_als300_playback_close(struct snd_pcm_substream *substream)
373{
374 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
375 struct snd_als300_substream_data *data;
376
377 data = substream->runtime->private_data;
b3a70d5e
AW		 378 kfree(data);
379 chip->playback_substream = NULL;
b3a70d5e
AW		 380 return 0;
381}
382
383static int snd_als300_capture_open(struct snd_pcm_substream *substream)
384{
385 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
386 struct snd_pcm_runtime *runtime = substream->runtime;
387 struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
388 GFP_KERNEL);
389
21b3de88
DK		 390 if (!data)
391 return -ENOMEM;
b3a70d5e
AW		 392 chip->capture_substream = substream;
393 runtime->hw = snd_als300_capture_hw;
394 runtime->private_data = data;
395 data->control_register = RECORD_CONTROL;
396 data->block_counter_register = RECORD_BLOCK_COUNTER;
b3a70d5e
AW		 397 return 0;
398}
399
400static int snd_als300_capture_close(struct snd_pcm_substream *substream)
401{
402 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
403 struct snd_als300_substream_data *data;
404
405 data = substream->runtime->private_data;
b3a70d5e
AW		 406 kfree(data);
407 chip->capture_substream = NULL;
b3a70d5e
AW		 408 return 0;
409}
410
b3a70d5e
AW		 411static int snd_als300_playback_prepare(struct snd_pcm_substream *substream)
412{
413 u32 tmp;
414 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
415 struct snd_pcm_runtime *runtime = substream->runtime;
416 unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
417 unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
418
b3a70d5e
AW		 419 spin_lock_irq(&chip->reg_lock);
420 tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
421 tmp &= ~TRANSFER_START;
422
423 snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n",
424 period_bytes, buffer_bytes);
425
426 /* set block size */
427 tmp &= 0xffff0000;
428 tmp |= period_bytes - 1;
429 snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL, tmp);
430
431 /* set dma area */
432 snd_als300_gcr_write(chip->port, PLAYBACK_START,
433 runtime->dma_addr);
434 snd_als300_gcr_write(chip->port, PLAYBACK_END,
435 runtime->dma_addr + buffer_bytes - 1);
436 spin_unlock_irq(&chip->reg_lock);
b3a70d5e
AW		 437 return 0;
438}
439
440static int snd_als300_capture_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
b3a70d5e
AW		 448 spin_lock_irq(&chip->reg_lock);
449 tmp = snd_als300_gcr_read(chip->port, RECORD_CONTROL);
450 tmp &= ~TRANSFER_START;
451
452 snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n", period_bytes,
453 buffer_bytes);
454
455 /* set block size */
456 tmp &= 0xffff0000;
457 tmp |= period_bytes - 1;
458
459 /* set dma area */
460 snd_als300_gcr_write(chip->port, RECORD_CONTROL, tmp);
461 snd_als300_gcr_write(chip->port, RECORD_START,
462 runtime->dma_addr);
463 snd_als300_gcr_write(chip->port, RECORD_END,
464 runtime->dma_addr + buffer_bytes - 1);
465 spin_unlock_irq(&chip->reg_lock);
b3a70d5e
AW		 466 return 0;
467}
468
469static int snd_als300_trigger(struct snd_pcm_substream *substream, int cmd)
470{
471 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
472 u32 tmp;
473 struct snd_als300_substream_data *data;
474 unsigned short reg;
475 int ret = 0;
476
477 data = substream->runtime->private_data;
478 reg = data->control_register;
479
b3a70d5e
AW		 480 spin_lock(&chip->reg_lock);
481 switch (cmd) {
482 case SNDRV_PCM_TRIGGER_START:
483 case SNDRV_PCM_TRIGGER_RESUME:
484 tmp = snd_als300_gcr_read(chip->port, reg);
485 data->period_flipflop = 1;
486 snd_als300_gcr_write(chip->port, reg, tmp | TRANSFER_START);
487 snd_als300_dbgplay("TRIGGER START\n");
488 break;
489 case SNDRV_PCM_TRIGGER_STOP:
490 case SNDRV_PCM_TRIGGER_SUSPEND:
491 tmp = snd_als300_gcr_read(chip->port, reg);
492 snd_als300_gcr_write(chip->port, reg, tmp & ~TRANSFER_START);
493 snd_als300_dbgplay("TRIGGER STOP\n");
494 break;
495 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
496 tmp = snd_als300_gcr_read(chip->port, reg);
497 snd_als300_gcr_write(chip->port, reg, tmp | FIFO_PAUSE);
498 snd_als300_dbgplay("TRIGGER PAUSE\n");
499 break;
500 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
501 tmp = snd_als300_gcr_read(chip->port, reg);
502 snd_als300_gcr_write(chip->port, reg, tmp & ~FIFO_PAUSE);
503 snd_als300_dbgplay("TRIGGER RELEASE\n");
504 break;
505 default:
506 snd_als300_dbgplay("TRIGGER INVALID\n");
507 ret = -EINVAL;
508 }
509 spin_unlock(&chip->reg_lock);
b3a70d5e
AW		 510 return ret;
511}
512
513static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream)
514{
515 u16 current_ptr;
516 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
517 struct snd_als300_substream_data *data;
518 unsigned short period_bytes;
519
520 data = substream->runtime->private_data;
521 period_bytes = snd_pcm_lib_period_bytes(substream);
522
b3a70d5e
AW		 523 spin_lock(&chip->reg_lock);
524 current_ptr = (u16) snd_als300_gcr_read(chip->port,
525 data->block_counter_register) + 4;
526 spin_unlock(&chip->reg_lock);
527 if (current_ptr > period_bytes)
528 current_ptr = 0;
529 else
530 current_ptr = period_bytes - current_ptr;
531
532 if (data->period_flipflop == 0)
533 current_ptr += period_bytes;
534 snd_als300_dbgplay("Pointer (bytes): %d\n", current_ptr);
b3a70d5e
AW		 535 return bytes_to_frames(substream->runtime, current_ptr);
536}
537
6769e988 538static const struct snd_pcm_ops snd_als300_playback_ops = {
b3a70d5e
AW		 539 .open = snd_als300_playback_open,
540 .close = snd_als300_playback_close,
b3a70d5e
AW		 541 .prepare = snd_als300_playback_prepare,
542 .trigger = snd_als300_trigger,
543 .pointer = snd_als300_pointer,
544};
545
6769e988 546static const struct snd_pcm_ops snd_als300_capture_ops = {
b3a70d5e
AW		 547 .open = snd_als300_capture_open,
548 .close = snd_als300_capture_close,
b3a70d5e
AW		 549 .prepare = snd_als300_capture_prepare,
550 .trigger = snd_als300_trigger,
551 .pointer = snd_als300_pointer,
552};
553
e23e7a14 554static int snd_als300_new_pcm(struct snd_als300 *chip)
b3a70d5e
AW		 555{
556 struct snd_pcm *pcm;
557 int err;
558
b3a70d5e
AW		 559 err = snd_pcm_new(chip->card, "ALS300", 0, 1, 1, &pcm);
560 if (err < 0)
561 return err;
562 pcm->private_data = chip;
563 strcpy(pcm->name, "ALS300");
564 chip->pcm = pcm;
565
566 /* set operators */
567 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
568 &snd_als300_playback_ops);
569 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
570 &snd_als300_capture_ops);
571
572 /* pre-allocation of buffers */
909c7d2c
TI		 573 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
574 64*1024, 64*1024);
b3a70d5e
AW		 575 return 0;
576}
577
578static void snd_als300_init(struct snd_als300 *chip)
579{
580 unsigned long flags;
581 u32 tmp;
582
b3a70d5e
AW		 583 spin_lock_irqsave(&chip->reg_lock, flags);
584 chip->revision = (snd_als300_gcr_read(chip->port, MISC_CONTROL) >> 16)
585 & 0x0000000F;
586 /* Setup DRAM */
587 tmp = snd_als300_gcr_read(chip->port, DRAM_WRITE_CONTROL);
588 snd_als300_gcr_write(chip->port, DRAM_WRITE_CONTROL,
589 (tmp | DRAM_MODE_2)
590 & ~WRITE_TRANS_START);
591
592 /* Enable IRQ output */
593 snd_als300_set_irq_flag(chip, IRQ_ENABLE);
594
595 /* Unmute hardware devices so their outputs get routed to
596 * the onboard mixer */
597 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
598 snd_als300_gcr_write(chip->port, MISC_CONTROL,
599 tmp | VMUTE_NORMAL | MMUTE_NORMAL);
600
601 /* Reset volumes */
602 snd_als300_gcr_write(chip->port, MUS_VOC_VOL, 0);
603
604 /* Make sure playback transfer is stopped */
605 tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
606 snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL,
607 tmp & ~TRANSFER_START);
608 spin_unlock_irqrestore(&chip->reg_lock, flags);
b3a70d5e
AW		 609}
610
e23e7a14
BP		 611static int snd_als300_create(struct snd_card *card,
612 struct pci_dev *pci, int chip_type,
613 struct snd_als300 **rchip)
b3a70d5e
AW		 614{
615 struct snd_als300 *chip;
616 void *irq_handler;
617 int err;
618
efb0ad25 619 static const struct snd_device_ops ops = {
b3a70d5e
AW		 620 .dev_free = snd_als300_dev_free,
621 };
622 *rchip = NULL;
623
b3a70d5e
AW		 624 if ((err = pci_enable_device(pci)) < 0)
625 return err;
626
669f65ea 627 if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(28))) {
c778f7ec 628 dev_err(card->dev, "error setting 28bit DMA mask\n");
b3a70d5e
AW		 629 pci_disable_device(pci);
630 return -ENXIO;
631 }
632 pci_set_master(pci);
633
634 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
635 if (chip == NULL) {
636 pci_disable_device(pci);
637 return -ENOMEM;
638 }
639
640 chip->card = card;
641 chip->pci = pci;
642 chip->irq = -1;
643 chip->chip_type = chip_type;
644 spin_lock_init(&chip->reg_lock);
645
646 if ((err = pci_request_regions(pci, "ALS300")) < 0) {
647 kfree(chip);
648 pci_disable_device(pci);
649 return err;
650 }
651 chip->port = pci_resource_start(pci, 0);
652
653 if (chip->chip_type == DEVICE_ALS300_PLUS)
654 irq_handler = snd_als300plus_interrupt;
655 else
656 irq_handler = snd_als300_interrupt;
657
437a5a46 658 if (request_irq(pci->irq, irq_handler, IRQF_SHARED,
934c2b6d 659 KBUILD_MODNAME, chip)) {
c778f7ec 660 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
b3a70d5e
AW		 661 snd_als300_free(chip);
662 return -EBUSY;
663 }
664 chip->irq = pci->irq;
ea2eab50 665 card->sync_irq = chip->irq;
b3a70d5e
AW		 666
667 snd_als300_init(chip);
668
65ff2357
AW		 669 err = snd_als300_ac97(chip);
670 if (err < 0) {
c778f7ec 671 dev_err(card->dev, "Could not create ac97\n");
b3a70d5e
AW		 672 snd_als300_free(chip);
673 return err;
674 }
675
676 if ((err = snd_als300_new_pcm(chip)) < 0) {
c778f7ec 677 dev_err(card->dev, "Could not create PCM\n");
b3a70d5e
AW		 678 snd_als300_free(chip);
679 return err;
680 }
681
682 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
683 chip, &ops)) < 0) {
684 snd_als300_free(chip);
685 return err;
686 }
687
b3a70d5e 688 *rchip = chip;
b3a70d5e
AW		 689 return 0;
690}
691
c7561cd8 692#ifdef CONFIG_PM_SLEEP
68cb2b55 693static int snd_als300_suspend(struct device *dev)
b3a70d5e 694{
68cb2b55 695 struct snd_card *card = dev_get_drvdata(dev);
b3a70d5e
AW		 696 struct snd_als300 *chip = card->private_data;
697
698 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
b3a70d5e 699 snd_ac97_suspend(chip->ac97);
b3a70d5e
AW		 700 return 0;
701}
702
68cb2b55 703static int snd_als300_resume(struct device *dev)
b3a70d5e 704{
68cb2b55 705 struct snd_card *card = dev_get_drvdata(dev);
b3a70d5e
AW		 706 struct snd_als300 *chip = card->private_data;
707
b3a70d5e
AW		 708 snd_als300_init(chip);
709 snd_ac97_resume(chip->ac97);
710
711 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
712 return 0;
713}
68cb2b55
TI		 714
715static SIMPLE_DEV_PM_OPS(snd_als300_pm, snd_als300_suspend, snd_als300_resume);
716#define SND_ALS300_PM_OPS &snd_als300_pm
717#else
718#define SND_ALS300_PM_OPS NULL
b3a70d5e
AW		 719#endif
720
e23e7a14 721static int snd_als300_probe(struct pci_dev *pci,
b3a70d5e
AW		 722 const struct pci_device_id *pci_id)
723{
724 static int dev;
725 struct snd_card *card;
726 struct snd_als300 *chip;
727 int err, chip_type;
728
729 if (dev >= SNDRV_CARDS)
730 return -ENODEV;
731 if (!enable[dev]) {
732 dev++;
733 return -ENOENT;
734 }
735
60c5772b
TI		 736 err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
737 0, &card);
b3a70d5e 738
e58de7ba
TI		 739 if (err < 0)
740 return err;
b3a70d5e
AW		 741
742 chip_type = pci_id->driver_data;
743
744 if ((err = snd_als300_create(card, pci, chip_type, &chip)) < 0) {
745 snd_card_free(card);
746 return err;
747 }
748 card->private_data = chip;
749
750 strcpy(card->driver, "ALS300");
751 if (chip->chip_type == DEVICE_ALS300_PLUS)
752 /* don't know much about ALS300+ yet
753 * print revision number for now */
754 sprintf(card->shortname, "ALS300+ (Rev. %d)", chip->revision);
755 else
756 sprintf(card->shortname, "ALS300 (Rev. %c)", 'A' +
757 chip->revision - 1);
758 sprintf(card->longname, "%s at 0x%lx irq %i",
759 card->shortname, chip->port, chip->irq);
760
761 if ((err = snd_card_register(card)) < 0) {
762 snd_card_free(card);
763 return err;
764 }
765 pci_set_drvdata(pci, card);
766 dev++;
767 return 0;
768}
769
e9f66d9b 770static struct pci_driver als300_driver = {
3733e424 771 .name = KBUILD_MODNAME,
b3a70d5e
AW		 772 .id_table = snd_als300_ids,
773 .probe = snd_als300_probe,
e23e7a14 774 .remove = snd_als300_remove,
68cb2b55
TI		 775 .driver = {
776 .pm = SND_ALS300_PM_OPS,
777 },
b3a70d5e
AW		 778};
779
e9f66d9b 780module_pci_driver(als300_driver);
Linux 6.x block layer and io_uring tree(s)