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
109 enum {DEVICE_ALS300, DEVICE_ALS300_PLUS};
110
111 MODULE_AUTHOR("Ash Willis <ashwillis@programmer.net>");
112 MODULE_DESCRIPTION("Avance Logic ALS300");
113 MODULE_LICENSE("GPL");
114 MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS300},{Avance Logic,ALS300+}}");
115
116 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
117 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
118 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
119
120 module_param_array(index, int, NULL, 0444);
121 MODULE_PARM_DESC(index, "Index value for ALS300 sound card.");
122 module_param_array(id, charp, NULL, 0444);
123 MODULE_PARM_DESC(id, "ID string for ALS300 sound card.");
124 module_param_array(enable, bool, NULL, 0444);
125 MODULE_PARM_DESC(enable, "Enable ALS300 sound card.");
126
127 struct 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
149 struct snd_als300_substream_data {
150 int period_flipflop;
151 int control_register;
152 int block_counter_register;
153 };
154
155 static 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
161 MODULE_DEVICE_TABLE(pci, snd_als300_ids);
162
snd_als300_gcr_read(unsigned long port,unsigned short reg)163 static 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
snd_als300_gcr_write(unsigned long port,unsigned short reg,u32 val)169 static 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 */
snd_als300_set_irq_flag(struct snd_als300 * chip,int cmd)177 static 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
snd_als300_free(struct snd_als300 * chip)194 static 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
snd_als300_dev_free(struct snd_device * device)207 static 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
snd_als300_interrupt(int irq,void * dev_id)213 static 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
snd_als300plus_interrupt(int irq,void * dev_id)244 static 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
snd_als300_remove(struct pci_dev * pci)281 static void 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
snd_als300_ac97_read(struct snd_ac97 * ac97,unsigned short reg)289 static 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
snd_als300_ac97_write(struct snd_ac97 * ac97,unsigned short reg,unsigned short val)310 static 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
snd_als300_ac97(struct snd_als300 * chip)324 static 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 */
352 static 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
371 static 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
snd_als300_playback_open(struct snd_pcm_substream * substream)390 static 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 if (!data)
398 return -ENOMEM;
399 snd_als300_dbgcallenter();
400 chip->playback_substream = substream;
401 runtime->hw = snd_als300_playback_hw;
402 runtime->private_data = data;
403 data->control_register = PLAYBACK_CONTROL;
404 data->block_counter_register = PLAYBACK_BLOCK_COUNTER;
405 snd_als300_dbgcallleave();
406 return 0;
407 }
408
snd_als300_playback_close(struct snd_pcm_substream * substream)409 static int snd_als300_playback_close(struct snd_pcm_substream *substream)
410 {
411 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
412 struct snd_als300_substream_data *data;
413
414 data = substream->runtime->private_data;
415 snd_als300_dbgcallenter();
416 kfree(data);
417 chip->playback_substream = NULL;
418 snd_pcm_lib_free_pages(substream);
419 snd_als300_dbgcallleave();
420 return 0;
421 }
422
snd_als300_capture_open(struct snd_pcm_substream * substream)423 static int snd_als300_capture_open(struct snd_pcm_substream *substream)
424 {
425 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
426 struct snd_pcm_runtime *runtime = substream->runtime;
427 struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
428 GFP_KERNEL);
429
430 if (!data)
431 return -ENOMEM;
432 snd_als300_dbgcallenter();
433 chip->capture_substream = substream;
434 runtime->hw = snd_als300_capture_hw;
435 runtime->private_data = data;
436 data->control_register = RECORD_CONTROL;
437 data->block_counter_register = RECORD_BLOCK_COUNTER;
438 snd_als300_dbgcallleave();
439 return 0;
440 }
441
snd_als300_capture_close(struct snd_pcm_substream * substream)442 static int snd_als300_capture_close(struct snd_pcm_substream *substream)
443 {
444 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
445 struct snd_als300_substream_data *data;
446
447 data = substream->runtime->private_data;
448 snd_als300_dbgcallenter();
449 kfree(data);
450 chip->capture_substream = NULL;
451 snd_pcm_lib_free_pages(substream);
452 snd_als300_dbgcallleave();
453 return 0;
454 }
455
snd_als300_pcm_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params)456 static int snd_als300_pcm_hw_params(struct snd_pcm_substream *substream,
457 struct snd_pcm_hw_params *hw_params)
458 {
459 return snd_pcm_lib_malloc_pages(substream,
460 params_buffer_bytes(hw_params));
461 }
462
snd_als300_pcm_hw_free(struct snd_pcm_substream * substream)463 static int snd_als300_pcm_hw_free(struct snd_pcm_substream *substream)
464 {
465 return snd_pcm_lib_free_pages(substream);
466 }
467
snd_als300_playback_prepare(struct snd_pcm_substream * substream)468 static int snd_als300_playback_prepare(struct snd_pcm_substream *substream)
469 {
470 u32 tmp;
471 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
472 struct snd_pcm_runtime *runtime = substream->runtime;
473 unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
474 unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
475
476 snd_als300_dbgcallenter();
477 spin_lock_irq(&chip->reg_lock);
478 tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
479 tmp &= ~TRANSFER_START;
480
481 snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n",
482 period_bytes, buffer_bytes);
483
484 /* set block size */
485 tmp &= 0xffff0000;
486 tmp |= period_bytes - 1;
487 snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL, tmp);
488
489 /* set dma area */
490 snd_als300_gcr_write(chip->port, PLAYBACK_START,
491 runtime->dma_addr);
492 snd_als300_gcr_write(chip->port, PLAYBACK_END,
493 runtime->dma_addr + buffer_bytes - 1);
494 spin_unlock_irq(&chip->reg_lock);
495 snd_als300_dbgcallleave();
496 return 0;
497 }
498
snd_als300_capture_prepare(struct snd_pcm_substream * substream)499 static int snd_als300_capture_prepare(struct snd_pcm_substream *substream)
500 {
501 u32 tmp;
502 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
503 struct snd_pcm_runtime *runtime = substream->runtime;
504 unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
505 unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
506
507 snd_als300_dbgcallenter();
508 spin_lock_irq(&chip->reg_lock);
509 tmp = snd_als300_gcr_read(chip->port, RECORD_CONTROL);
510 tmp &= ~TRANSFER_START;
511
512 snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n", period_bytes,
513 buffer_bytes);
514
515 /* set block size */
516 tmp &= 0xffff0000;
517 tmp |= period_bytes - 1;
518
519 /* set dma area */
520 snd_als300_gcr_write(chip->port, RECORD_CONTROL, tmp);
521 snd_als300_gcr_write(chip->port, RECORD_START,
522 runtime->dma_addr);
523 snd_als300_gcr_write(chip->port, RECORD_END,
524 runtime->dma_addr + buffer_bytes - 1);
525 spin_unlock_irq(&chip->reg_lock);
526 snd_als300_dbgcallleave();
527 return 0;
528 }
529
snd_als300_trigger(struct snd_pcm_substream * substream,int cmd)530 static int snd_als300_trigger(struct snd_pcm_substream *substream, int cmd)
531 {
532 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
533 u32 tmp;
534 struct snd_als300_substream_data *data;
535 unsigned short reg;
536 int ret = 0;
537
538 data = substream->runtime->private_data;
539 reg = data->control_register;
540
541 snd_als300_dbgcallenter();
542 spin_lock(&chip->reg_lock);
543 switch (cmd) {
544 case SNDRV_PCM_TRIGGER_START:
545 case SNDRV_PCM_TRIGGER_RESUME:
546 tmp = snd_als300_gcr_read(chip->port, reg);
547 data->period_flipflop = 1;
548 snd_als300_gcr_write(chip->port, reg, tmp | TRANSFER_START);
549 snd_als300_dbgplay("TRIGGER START\n");
550 break;
551 case SNDRV_PCM_TRIGGER_STOP:
552 case SNDRV_PCM_TRIGGER_SUSPEND:
553 tmp = snd_als300_gcr_read(chip->port, reg);
554 snd_als300_gcr_write(chip->port, reg, tmp & ~TRANSFER_START);
555 snd_als300_dbgplay("TRIGGER STOP\n");
556 break;
557 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
558 tmp = snd_als300_gcr_read(chip->port, reg);
559 snd_als300_gcr_write(chip->port, reg, tmp | FIFO_PAUSE);
560 snd_als300_dbgplay("TRIGGER PAUSE\n");
561 break;
562 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
563 tmp = snd_als300_gcr_read(chip->port, reg);
564 snd_als300_gcr_write(chip->port, reg, tmp & ~FIFO_PAUSE);
565 snd_als300_dbgplay("TRIGGER RELEASE\n");
566 break;
567 default:
568 snd_als300_dbgplay("TRIGGER INVALID\n");
569 ret = -EINVAL;
570 }
571 spin_unlock(&chip->reg_lock);
572 snd_als300_dbgcallleave();
573 return ret;
574 }
575
snd_als300_pointer(struct snd_pcm_substream * substream)576 static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream)
577 {
578 u16 current_ptr;
579 struct snd_als300 *chip = snd_pcm_substream_chip(substream);
580 struct snd_als300_substream_data *data;
581 unsigned short period_bytes;
582
583 data = substream->runtime->private_data;
584 period_bytes = snd_pcm_lib_period_bytes(substream);
585
586 snd_als300_dbgcallenter();
587 spin_lock(&chip->reg_lock);
588 current_ptr = (u16) snd_als300_gcr_read(chip->port,
589 data->block_counter_register) + 4;
590 spin_unlock(&chip->reg_lock);
591 if (current_ptr > period_bytes)
592 current_ptr = 0;
593 else
594 current_ptr = period_bytes - current_ptr;
595
596 if (data->period_flipflop == 0)
597 current_ptr += period_bytes;
598 snd_als300_dbgplay("Pointer (bytes): %d\n", current_ptr);
599 snd_als300_dbgcallleave();
600 return bytes_to_frames(substream->runtime, current_ptr);
601 }
602
603 static struct snd_pcm_ops snd_als300_playback_ops = {
604 .open = snd_als300_playback_open,
605 .close = snd_als300_playback_close,
606 .ioctl = snd_pcm_lib_ioctl,
607 .hw_params = snd_als300_pcm_hw_params,
608 .hw_free = snd_als300_pcm_hw_free,
609 .prepare = snd_als300_playback_prepare,
610 .trigger = snd_als300_trigger,
611 .pointer = snd_als300_pointer,
612 };
613
614 static struct snd_pcm_ops snd_als300_capture_ops = {
615 .open = snd_als300_capture_open,
616 .close = snd_als300_capture_close,
617 .ioctl = snd_pcm_lib_ioctl,
618 .hw_params = snd_als300_pcm_hw_params,
619 .hw_free = snd_als300_pcm_hw_free,
620 .prepare = snd_als300_capture_prepare,
621 .trigger = snd_als300_trigger,
622 .pointer = snd_als300_pointer,
623 };
624
snd_als300_new_pcm(struct snd_als300 * chip)625 static int snd_als300_new_pcm(struct snd_als300 *chip)
626 {
627 struct snd_pcm *pcm;
628 int err;
629
630 snd_als300_dbgcallenter();
631 err = snd_pcm_new(chip->card, "ALS300", 0, 1, 1, &pcm);
632 if (err < 0)
633 return err;
634 pcm->private_data = chip;
635 strcpy(pcm->name, "ALS300");
636 chip->pcm = pcm;
637
638 /* set operators */
639 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
640 &snd_als300_playback_ops);
641 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
642 &snd_als300_capture_ops);
643
644 /* pre-allocation of buffers */
645 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
646 snd_dma_pci_data(chip->pci), 64*1024, 64*1024);
647 snd_als300_dbgcallleave();
648 return 0;
649 }
650
snd_als300_init(struct snd_als300 * chip)651 static void snd_als300_init(struct snd_als300 *chip)
652 {
653 unsigned long flags;
654 u32 tmp;
655
656 snd_als300_dbgcallenter();
657 spin_lock_irqsave(&chip->reg_lock, flags);
658 chip->revision = (snd_als300_gcr_read(chip->port, MISC_CONTROL) >> 16)
659 & 0x0000000F;
660 /* Setup DRAM */
661 tmp = snd_als300_gcr_read(chip->port, DRAM_WRITE_CONTROL);
662 snd_als300_gcr_write(chip->port, DRAM_WRITE_CONTROL,
663 (tmp | DRAM_MODE_2)
664 & ~WRITE_TRANS_START);
665
666 /* Enable IRQ output */
667 snd_als300_set_irq_flag(chip, IRQ_ENABLE);
668
669 /* Unmute hardware devices so their outputs get routed to
670 * the onboard mixer */
671 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
672 snd_als300_gcr_write(chip->port, MISC_CONTROL,
673 tmp | VMUTE_NORMAL | MMUTE_NORMAL);
674
675 /* Reset volumes */
676 snd_als300_gcr_write(chip->port, MUS_VOC_VOL, 0);
677
678 /* Make sure playback transfer is stopped */
679 tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
680 snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL,
681 tmp & ~TRANSFER_START);
682 spin_unlock_irqrestore(&chip->reg_lock, flags);
683 snd_als300_dbgcallleave();
684 }
685
snd_als300_create(struct snd_card * card,struct pci_dev * pci,int chip_type,struct snd_als300 ** rchip)686 static int snd_als300_create(struct snd_card *card,
687 struct pci_dev *pci, int chip_type,
688 struct snd_als300 **rchip)
689 {
690 struct snd_als300 *chip;
691 void *irq_handler;
692 int err;
693
694 static struct snd_device_ops ops = {
695 .dev_free = snd_als300_dev_free,
696 };
697 *rchip = NULL;
698
699 snd_als300_dbgcallenter();
700 if ((err = pci_enable_device(pci)) < 0)
701 return err;
702
703 if (pci_set_dma_mask(pci, DMA_BIT_MASK(28)) < 0 ||
704 pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(28)) < 0) {
705 printk(KERN_ERR "error setting 28bit DMA mask\n");
706 pci_disable_device(pci);
707 return -ENXIO;
708 }
709 pci_set_master(pci);
710
711 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
712 if (chip == NULL) {
713 pci_disable_device(pci);
714 return -ENOMEM;
715 }
716
717 chip->card = card;
718 chip->pci = pci;
719 chip->irq = -1;
720 chip->chip_type = chip_type;
721 spin_lock_init(&chip->reg_lock);
722
723 if ((err = pci_request_regions(pci, "ALS300")) < 0) {
724 kfree(chip);
725 pci_disable_device(pci);
726 return err;
727 }
728 chip->port = pci_resource_start(pci, 0);
729
730 if (chip->chip_type == DEVICE_ALS300_PLUS)
731 irq_handler = snd_als300plus_interrupt;
732 else
733 irq_handler = snd_als300_interrupt;
734
735 if (request_irq(pci->irq, irq_handler, IRQF_SHARED,
736 KBUILD_MODNAME, chip)) {
737 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
738 snd_als300_free(chip);
739 return -EBUSY;
740 }
741 chip->irq = pci->irq;
742
743
744 snd_als300_init(chip);
745
746 err = snd_als300_ac97(chip);
747 if (err < 0) {
748 snd_printk(KERN_WARNING "Could not create ac97\n");
749 snd_als300_free(chip);
750 return err;
751 }
752
753 if ((err = snd_als300_new_pcm(chip)) < 0) {
754 snd_printk(KERN_WARNING "Could not create PCM\n");
755 snd_als300_free(chip);
756 return err;
757 }
758
759 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
760 chip, &ops)) < 0) {
761 snd_als300_free(chip);
762 return err;
763 }
764
765 snd_card_set_dev(card, &pci->dev);
766
767 *rchip = chip;
768 snd_als300_dbgcallleave();
769 return 0;
770 }
771
772 #ifdef CONFIG_PM_SLEEP
snd_als300_suspend(struct device * dev)773 static int snd_als300_suspend(struct device *dev)
774 {
775 struct pci_dev *pci = to_pci_dev(dev);
776 struct snd_card *card = dev_get_drvdata(dev);
777 struct snd_als300 *chip = card->private_data;
778
779 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
780 snd_pcm_suspend_all(chip->pcm);
781 snd_ac97_suspend(chip->ac97);
782
783 pci_disable_device(pci);
784 pci_save_state(pci);
785 pci_set_power_state(pci, PCI_D3hot);
786 return 0;
787 }
788
snd_als300_resume(struct device * dev)789 static int snd_als300_resume(struct device *dev)
790 {
791 struct pci_dev *pci = to_pci_dev(dev);
792 struct snd_card *card = dev_get_drvdata(dev);
793 struct snd_als300 *chip = card->private_data;
794
795 pci_set_power_state(pci, PCI_D0);
796 pci_restore_state(pci);
797 if (pci_enable_device(pci) < 0) {
798 printk(KERN_ERR "als300: pci_enable_device failed, "
799 "disabling device\n");
800 snd_card_disconnect(card);
801 return -EIO;
802 }
803 pci_set_master(pci);
804
805 snd_als300_init(chip);
806 snd_ac97_resume(chip->ac97);
807
808 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
809 return 0;
810 }
811
812 static SIMPLE_DEV_PM_OPS(snd_als300_pm, snd_als300_suspend, snd_als300_resume);
813 #define SND_ALS300_PM_OPS &snd_als300_pm
814 #else
815 #define SND_ALS300_PM_OPS NULL
816 #endif
817
snd_als300_probe(struct pci_dev * pci,const struct pci_device_id * pci_id)818 static int snd_als300_probe(struct pci_dev *pci,
819 const struct pci_device_id *pci_id)
820 {
821 static int dev;
822 struct snd_card *card;
823 struct snd_als300 *chip;
824 int err, chip_type;
825
826 if (dev >= SNDRV_CARDS)
827 return -ENODEV;
828 if (!enable[dev]) {
829 dev++;
830 return -ENOENT;
831 }
832
833 err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
834
835 if (err < 0)
836 return err;
837
838 chip_type = pci_id->driver_data;
839
840 if ((err = snd_als300_create(card, pci, chip_type, &chip)) < 0) {
841 snd_card_free(card);
842 return err;
843 }
844 card->private_data = chip;
845
846 strcpy(card->driver, "ALS300");
847 if (chip->chip_type == DEVICE_ALS300_PLUS)
848 /* don't know much about ALS300+ yet
849 * print revision number for now */
850 sprintf(card->shortname, "ALS300+ (Rev. %d)", chip->revision);
851 else
852 sprintf(card->shortname, "ALS300 (Rev. %c)", 'A' +
853 chip->revision - 1);
854 sprintf(card->longname, "%s at 0x%lx irq %i",
855 card->shortname, chip->port, chip->irq);
856
857 if ((err = snd_card_register(card)) < 0) {
858 snd_card_free(card);
859 return err;
860 }
861 pci_set_drvdata(pci, card);
862 dev++;
863 return 0;
864 }
865
866 static struct pci_driver als300_driver = {
867 .name = KBUILD_MODNAME,
868 .id_table = snd_als300_ids,
869 .probe = snd_als300_probe,
870 .remove = snd_als300_remove,
871 .driver = {
872 .pm = SND_ALS300_PM_OPS,
873 },
874 };
875
876 module_pci_driver(als300_driver);
877