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[TG3]: Set minimal hw interrupt mitigation.
[linux-2.6/verdex.git] / sound / pci / als4000.c
blobf1a5f5723ee6b5f89ad3be89130146bd22a398f8
1 /*
2 * card-als4000.c - driver for Avance Logic ALS4000 based soundcards.
3 * Copyright (C) 2000 by Bart Hartgers <bart@etpmod.phys.tue.nl>,
4 * Jaroslav Kysela <perex@suse.cz>
5 * Copyright (C) 2002 by Andreas Mohr <hw7oshyuv3001@sneakemail.com>
6 *
7 * Framework borrowed from Massimo Piccioni's card-als100.c.
8 *
9 * NOTES
10 *
11 * Since Avance does not provide any meaningful documentation, and I
12 * bought an ALS4000 based soundcard, I was forced to base this driver
13 * on reverse engineering.
14 *
15 * Note: this is no longer true. Pretty verbose chip docu (ALS4000a.PDF)
16 * can be found on the ALSA web site.
17 *
18 * The ALS4000 seems to be the PCI-cousin of the ALS100. It contains an
19 * ALS100-like SB DSP/mixer, an OPL3 synth, a MPU401 and a gameport
20 * interface. These subsystems can be mapped into ISA io-port space,
21 * using the PCI-interface. In addition, the PCI-bit provides DMA and IRQ
22 * services to the subsystems.
23 *
24 * While ALS4000 is very similar to a SoundBlaster, the differences in
25 * DMA and capturing require more changes to the SoundBlaster than
26 * desirable, so I made this separate driver.
27 *
28 * The ALS4000 can do real full duplex playback/capture.
29 *
30 * FMDAC:
31 * - 0x4f -> port 0x14
32 * - port 0x15 |= 1
33 *
34 * Enable/disable 3D sound:
35 * - 0x50 -> port 0x14
36 * - change bit 6 (0x40) of port 0x15
37 *
38 * Set QSound:
39 * - 0xdb -> port 0x14
40 * - set port 0x15:
41 * 0x3e (mode 3), 0x3c (mode 2), 0x3a (mode 1), 0x38 (mode 0)
42 *
43 * Set KSound:
44 * - value -> some port 0x0c0d
45 *
46 * This program is free software; you can redistribute it and/or modify
47 * it under the terms of the GNU General Public License as published by
48 * the Free Software Foundation; either version 2 of the License, or
49 * (at your option) any later version.
50 *
51 * This program is distributed in the hope that it will be useful,
52 * but WITHOUT ANY WARRANTY; without even the implied warranty of
53 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
54 * GNU General Public License for more details.
55
56 * You should have received a copy of the GNU General Public License
57 * along with this program; if not, write to the Free Software
58 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
59 */
60
61 #include <sound/driver.h>
62 #include <asm/io.h>
63 #include <linux/init.h>
64 #include <linux/pci.h>
65 #include <linux/slab.h>
66 #include <linux/gameport.h>
67 #include <linux/moduleparam.h>
68 #include <sound/core.h>
69 #include <sound/pcm.h>
70 #include <sound/rawmidi.h>
71 #include <sound/mpu401.h>
72 #include <sound/opl3.h>
73 #include <sound/sb.h>
74 #include <sound/initval.h>
75
76 MODULE_AUTHOR("Bart Hartgers <bart@etpmod.phys.tue.nl>");
77 MODULE_DESCRIPTION("Avance Logic ALS4000");
78 MODULE_LICENSE("GPL");
79 MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS4000}}");
80
81 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
82 #define SUPPORT_JOYSTICK 1
83 #endif
84
85 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
86 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
87 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
88 #ifdef SUPPORT_JOYSTICK
89 static int joystick_port[SNDRV_CARDS];
90 #endif
91
92 module_param_array(index, int, NULL, 0444);
93 MODULE_PARM_DESC(index, "Index value for ALS4000 soundcard.");
94 module_param_array(id, charp, NULL, 0444);
95 MODULE_PARM_DESC(id, "ID string for ALS4000 soundcard.");
96 module_param_array(enable, bool, NULL, 0444);
97 MODULE_PARM_DESC(enable, "Enable ALS4000 soundcard.");
98 #ifdef SUPPORT_JOYSTICK
99 module_param_array(joystick_port, int, NULL, 0444);
100 MODULE_PARM_DESC(joystick_port, "Joystick port address for ALS4000 soundcard. (0 = disabled)");
101 #endif
102
103 typedef struct {
104 struct pci_dev *pci;
105 unsigned long gcr;
106 #ifdef SUPPORT_JOYSTICK
107 struct gameport *gameport;
108 #endif
109 } snd_card_als4000_t;
110
111 static struct pci_device_id snd_als4000_ids[] = {
112 { 0x4005, 0x4000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* ALS4000 */
113 { 0, }
114 };
115
116 MODULE_DEVICE_TABLE(pci, snd_als4000_ids);
117
118 static inline void snd_als4000_gcr_write_addr(unsigned long port, u32 reg, u32 val)
119 {
120 outb(reg, port+0x0c);
121 outl(val, port+0x08);
122 }
123
124 static inline void snd_als4000_gcr_write(sb_t *sb, u32 reg, u32 val)
125 {
126 snd_als4000_gcr_write_addr(sb->alt_port, reg, val);
127 }
128
129 static inline u32 snd_als4000_gcr_read_addr(unsigned long port, u32 reg)
130 {
131 outb(reg, port+0x0c);
132 return inl(port+0x08);
133 }
134
135 static inline u32 snd_als4000_gcr_read(sb_t *sb, u32 reg)
136 {
137 return snd_als4000_gcr_read_addr(sb->alt_port, reg);
138 }
139
140 static void snd_als4000_set_rate(sb_t *chip, unsigned int rate)
141 {
142 if (!(chip->mode & SB_RATE_LOCK)) {
143 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
144 snd_sbdsp_command(chip, rate>>8);
145 snd_sbdsp_command(chip, rate);
146 }
147 }
148
149 static void snd_als4000_set_capture_dma(sb_t *chip, dma_addr_t addr, unsigned size)
150 {
151 snd_als4000_gcr_write(chip, 0xa2, addr);
152 snd_als4000_gcr_write(chip, 0xa3, (size-1));
153 }
154
155 static void snd_als4000_set_playback_dma(sb_t *chip, dma_addr_t addr, unsigned size)
156 {
157 snd_als4000_gcr_write(chip, 0x91, addr);
158 snd_als4000_gcr_write(chip, 0x92, (size-1)|0x180000);
159 }
160
161 #define ALS4000_FORMAT_SIGNED (1<<0)
162 #define ALS4000_FORMAT_16BIT (1<<1)
163 #define ALS4000_FORMAT_STEREO (1<<2)
164
165 static int snd_als4000_get_format(snd_pcm_runtime_t *runtime)
166 {
167 int result;
168
169 result = 0;
170 if (snd_pcm_format_signed(runtime->format))
171 result |= ALS4000_FORMAT_SIGNED;
172 if (snd_pcm_format_physical_width(runtime->format) == 16)
173 result |= ALS4000_FORMAT_16BIT;
174 if (runtime->channels > 1)
175 result |= ALS4000_FORMAT_STEREO;
176 return result;
177 }
178
179 /* structure for setting up playback */
180 static struct {
181 unsigned char dsp_cmd, dma_on, dma_off, format;
182 } playback_cmd_vals[]={
183 /* ALS4000_FORMAT_U8_MONO */
184 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_MONO },
185 /* ALS4000_FORMAT_S8_MONO */
186 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_MONO },
187 /* ALS4000_FORMAT_U16L_MONO */
188 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_MONO },
189 /* ALS4000_FORMAT_S16L_MONO */
190 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_MONO },
191 /* ALS4000_FORMAT_U8_STEREO */
192 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_STEREO },
193 /* ALS4000_FORMAT_S8_STEREO */
194 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_STEREO },
195 /* ALS4000_FORMAT_U16L_STEREO */
196 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_STEREO },
197 /* ALS4000_FORMAT_S16L_STEREO */
198 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_STEREO },
199 };
200 #define playback_cmd(chip) (playback_cmd_vals[(chip)->playback_format])
201
202 /* structure for setting up capture */
203 enum { CMD_WIDTH8=0x04, CMD_SIGNED=0x10, CMD_MONO=0x80, CMD_STEREO=0xA0 };
204 static unsigned char capture_cmd_vals[]=
205 {
206 CMD_WIDTH8|CMD_MONO, /* ALS4000_FORMAT_U8_MONO */
207 CMD_WIDTH8|CMD_SIGNED|CMD_MONO, /* ALS4000_FORMAT_S8_MONO */
208 CMD_MONO, /* ALS4000_FORMAT_U16L_MONO */
209 CMD_SIGNED|CMD_MONO, /* ALS4000_FORMAT_S16L_MONO */
210 CMD_WIDTH8|CMD_STEREO, /* ALS4000_FORMAT_U8_STEREO */
211 CMD_WIDTH8|CMD_SIGNED|CMD_STEREO, /* ALS4000_FORMAT_S8_STEREO */
212 CMD_STEREO, /* ALS4000_FORMAT_U16L_STEREO */
213 CMD_SIGNED|CMD_STEREO, /* ALS4000_FORMAT_S16L_STEREO */
214 };
215 #define capture_cmd(chip) (capture_cmd_vals[(chip)->capture_format])
216
217 static int snd_als4000_hw_params(snd_pcm_substream_t * substream,
218 snd_pcm_hw_params_t * hw_params)
219 {
220 return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
221 }
222
223 static int snd_als4000_hw_free(snd_pcm_substream_t * substream)
224 {
225 snd_pcm_lib_free_pages(substream);
226 return 0;
227 }
228
229 static int snd_als4000_capture_prepare(snd_pcm_substream_t * substream)
230 {
231 unsigned long flags;
232 sb_t *chip = snd_pcm_substream_chip(substream);
233 snd_pcm_runtime_t *runtime = substream->runtime;
234 unsigned long size;
235 unsigned count;
236
237 chip->capture_format = snd_als4000_get_format(runtime);
238
239 size = snd_pcm_lib_buffer_bytes(substream);
240 count = snd_pcm_lib_period_bytes(substream);
241
242 if (chip->capture_format & ALS4000_FORMAT_16BIT)
243 count >>=1;
244 count--;
245
246 spin_lock_irqsave(&chip->reg_lock, flags);
247 snd_als4000_set_rate(chip, runtime->rate);
248 snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
249 spin_unlock_irqrestore(&chip->reg_lock, flags);
250 spin_lock_irqsave(&chip->mixer_lock, flags );
251 snd_sbmixer_write(chip, 0xdc, count);
252 snd_sbmixer_write(chip, 0xdd, count>>8);
253 spin_unlock_irqrestore(&chip->mixer_lock, flags );
254 return 0;
255 }
256
257 static int snd_als4000_playback_prepare(snd_pcm_substream_t *substream)
258 {
259 unsigned long flags;
260 sb_t *chip = snd_pcm_substream_chip(substream);
261 snd_pcm_runtime_t *runtime = substream->runtime;
262 unsigned long size;
263 unsigned count;
264
265 chip->playback_format = snd_als4000_get_format(runtime);
266
267 size = snd_pcm_lib_buffer_bytes(substream);
268 count = snd_pcm_lib_period_bytes(substream);
269
270 if (chip->playback_format & ALS4000_FORMAT_16BIT)
271 count >>=1;
272 count--;
273
274 /* FIXME: from second playback on, there's a lot more clicks and pops
275 * involved here than on first playback. Fiddling with
276 * tons of different settings didn't help (DMA, speaker on/off,
277 * reordering, ...). Something seems to get enabled on playback
278 * that I haven't found out how to disable again, which then causes
279 * the switching pops to reach the speakers the next time here. */
280 spin_lock_irqsave(&chip->reg_lock, flags);
281 snd_als4000_set_rate(chip, runtime->rate);
282 snd_als4000_set_playback_dma(chip, runtime->dma_addr, size);
283
284 /* SPEAKER_ON not needed, since dma_on seems to also enable speaker */
285 /* snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON); */
286 snd_sbdsp_command(chip, playback_cmd(chip).dsp_cmd);
287 snd_sbdsp_command(chip, playback_cmd(chip).format);
288 snd_sbdsp_command(chip, count);
289 snd_sbdsp_command(chip, count>>8);
290 snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
291 spin_unlock_irqrestore(&chip->reg_lock, flags);
292
293 return 0;
294 }
295
296 static int snd_als4000_capture_trigger(snd_pcm_substream_t * substream, int cmd)
297 {
298 sb_t *chip = snd_pcm_substream_chip(substream);
299 int result = 0;
300
301 spin_lock(&chip->mixer_lock);
302 if (cmd == SNDRV_PCM_TRIGGER_START) {
303 chip->mode |= SB_RATE_LOCK_CAPTURE;
304 snd_sbmixer_write(chip, 0xde, capture_cmd(chip));
305 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
306 chip->mode &= ~SB_RATE_LOCK_CAPTURE;
307 snd_sbmixer_write(chip, 0xde, 0);
308 } else {
309 result = -EINVAL;
310 }
311 spin_unlock(&chip->mixer_lock);
312 return result;
313 }
314
315 static int snd_als4000_playback_trigger(snd_pcm_substream_t * substream, int cmd)
316 {
317 sb_t *chip = snd_pcm_substream_chip(substream);
318 int result = 0;
319
320 spin_lock(&chip->reg_lock);
321 if (cmd == SNDRV_PCM_TRIGGER_START) {
322 chip->mode |= SB_RATE_LOCK_PLAYBACK;
323 snd_sbdsp_command(chip, playback_cmd(chip).dma_on);
324 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
325 snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
326 chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
327 } else {
328 result = -EINVAL;
329 }
330 spin_unlock(&chip->reg_lock);
331 return result;
332 }
333
334 static snd_pcm_uframes_t snd_als4000_capture_pointer(snd_pcm_substream_t * substream)
335 {
336 sb_t *chip = snd_pcm_substream_chip(substream);
337 unsigned int result;
338
339 spin_lock(&chip->reg_lock);
340 result = snd_als4000_gcr_read(chip, 0xa4) & 0xffff;
341 spin_unlock(&chip->reg_lock);
342 return bytes_to_frames( substream->runtime, result );
343 }
344
345 static snd_pcm_uframes_t snd_als4000_playback_pointer(snd_pcm_substream_t * substream)
346 {
347 sb_t *chip = snd_pcm_substream_chip(substream);
348 unsigned result;
349
350 spin_lock(&chip->reg_lock);
351 result = snd_als4000_gcr_read(chip, 0xa0) & 0xffff;
352 spin_unlock(&chip->reg_lock);
353 return bytes_to_frames( substream->runtime, result );
354 }
355
356 static irqreturn_t snd_als4000_interrupt(int irq, void *dev_id, struct pt_regs *regs)
357 {
358 sb_t *chip = dev_id;
359 unsigned gcr_status;
360 unsigned sb_status;
361
362 /* find out which bit of the ALS4000 produced the interrupt */
363 gcr_status = inb(chip->alt_port + 0xe);
364
365 if ((gcr_status & 0x80) && (chip->playback_substream)) /* playback */
366 snd_pcm_period_elapsed(chip->playback_substream);
367 if ((gcr_status & 0x40) && (chip->capture_substream)) /* capturing */
368 snd_pcm_period_elapsed(chip->capture_substream);
369 if ((gcr_status & 0x10) && (chip->rmidi)) /* MPU401 interrupt */
370 snd_mpu401_uart_interrupt(irq, chip->rmidi, regs);
371 /* release the gcr */
372 outb(gcr_status, chip->alt_port + 0xe);
373
374 spin_lock(&chip->mixer_lock);
375 sb_status = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
376 spin_unlock(&chip->mixer_lock);
377
378 if (sb_status & SB_IRQTYPE_8BIT)
379 snd_sb_ack_8bit(chip);
380 if (sb_status & SB_IRQTYPE_16BIT)
381 snd_sb_ack_16bit(chip);
382 if (sb_status & SB_IRQTYPE_MPUIN)
383 inb(chip->mpu_port);
384 if (sb_status & 0x20)
385 inb(SBP(chip, RESET));
386 return IRQ_HANDLED;
387 }
388
389 /*****************************************************************/
390
391 static snd_pcm_hardware_t snd_als4000_playback =
392 {
393 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
394 SNDRV_PCM_INFO_MMAP_VALID),
395 .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
396 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE, /* formats */
397 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
398 .rate_min = 4000,
399 .rate_max = 48000,
400 .channels_min = 1,
401 .channels_max = 2,
402 .buffer_bytes_max = 65536,
403 .period_bytes_min = 64,
404 .period_bytes_max = 65536,
405 .periods_min = 1,
406 .periods_max = 1024,
407 .fifo_size = 0
408 };
409
410 static snd_pcm_hardware_t snd_als4000_capture =
411 {
412 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
413 SNDRV_PCM_INFO_MMAP_VALID),
414 .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
415 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE, /* formats */
416 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
417 .rate_min = 4000,
418 .rate_max = 48000,
419 .channels_min = 1,
420 .channels_max = 2,
421 .buffer_bytes_max = 65536,
422 .period_bytes_min = 64,
423 .period_bytes_max = 65536,
424 .periods_min = 1,
425 .periods_max = 1024,
426 .fifo_size = 0
427 };
428
429 /*****************************************************************/
430
431 static int snd_als4000_playback_open(snd_pcm_substream_t * substream)
432 {
433 sb_t *chip = snd_pcm_substream_chip(substream);
434 snd_pcm_runtime_t *runtime = substream->runtime;
435
436 chip->playback_substream = substream;
437 runtime->hw = snd_als4000_playback;
438 return 0;
439 }
440
441 static int snd_als4000_playback_close(snd_pcm_substream_t * substream)
442 {
443 sb_t *chip = snd_pcm_substream_chip(substream);
444
445 chip->playback_substream = NULL;
446 snd_pcm_lib_free_pages(substream);
447 return 0;
448 }
449
450 static int snd_als4000_capture_open(snd_pcm_substream_t * substream)
451 {
452 sb_t *chip = snd_pcm_substream_chip(substream);
453 snd_pcm_runtime_t *runtime = substream->runtime;
454
455 chip->capture_substream = substream;
456 runtime->hw = snd_als4000_capture;
457 return 0;
458 }
459
460 static int snd_als4000_capture_close(snd_pcm_substream_t * substream)
461 {
462 sb_t *chip = snd_pcm_substream_chip(substream);
463
464 chip->capture_substream = NULL;
465 snd_pcm_lib_free_pages(substream);
466 return 0;
467 }
468
469 /******************************************************************/
470
471 static snd_pcm_ops_t snd_als4000_playback_ops = {
472 .open = snd_als4000_playback_open,
473 .close = snd_als4000_playback_close,
474 .ioctl = snd_pcm_lib_ioctl,
475 .hw_params = snd_als4000_hw_params,
476 .hw_free = snd_als4000_hw_free,
477 .prepare = snd_als4000_playback_prepare,
478 .trigger = snd_als4000_playback_trigger,
479 .pointer = snd_als4000_playback_pointer
480 };
481
482 static snd_pcm_ops_t snd_als4000_capture_ops = {
483 .open = snd_als4000_capture_open,
484 .close = snd_als4000_capture_close,
485 .ioctl = snd_pcm_lib_ioctl,
486 .hw_params = snd_als4000_hw_params,
487 .hw_free = snd_als4000_hw_free,
488 .prepare = snd_als4000_capture_prepare,
489 .trigger = snd_als4000_capture_trigger,
490 .pointer = snd_als4000_capture_pointer
491 };
492
493 static void snd_als4000_pcm_free(snd_pcm_t *pcm)
494 {
495 sb_t *chip = pcm->private_data;
496 chip->pcm = NULL;
497 snd_pcm_lib_preallocate_free_for_all(pcm);
498 }
499
500 static int __devinit snd_als4000_pcm(sb_t *chip, int device)
501 {
502 snd_pcm_t *pcm;
503 int err;
504
505 if ((err = snd_pcm_new(chip->card, "ALS4000 DSP", device, 1, 1, &pcm)) < 0)
506 return err;
507 pcm->private_free = snd_als4000_pcm_free;
508 pcm->private_data = chip;
509 pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
510 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_als4000_playback_ops);
511 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_als4000_capture_ops);
512
513 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
514 64*1024, 64*1024);
515
516 chip->pcm = pcm;
517
518 return 0;
519 }
520
521 /******************************************************************/
522
523 static void snd_als4000_set_addr(unsigned long gcr,
524 unsigned int sb,
525 unsigned int mpu,
526 unsigned int opl,
527 unsigned int game)
528 {
529 u32 confA = 0;
530 u32 confB = 0;
531
532 if (mpu > 0)
533 confB |= (mpu | 1) << 16;
534 if (sb > 0)
535 confB |= (sb | 1);
536 if (game > 0)
537 confA |= (game | 1) << 16;
538 if (opl > 0)
539 confA |= (opl | 1);
540 snd_als4000_gcr_write_addr(gcr, 0xa8, confA);
541 snd_als4000_gcr_write_addr(gcr, 0xa9, confB);
542 }
543
544 static void __devinit snd_als4000_configure(sb_t *chip)
545 {
546 unsigned tmp;
547 int i;
548
549 /* do some more configuration */
550 spin_lock_irq(&chip->mixer_lock);
551 tmp = snd_sbmixer_read(chip, 0xc0);
552 snd_sbmixer_write(chip, 0xc0, tmp|0x80);
553 /* always select DMA channel 0, since we do not actually use DMA */
554 snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
555 snd_sbmixer_write(chip, 0xc0, tmp&0x7f);
556 spin_unlock_irq(&chip->mixer_lock);
557
558 spin_lock_irq(&chip->reg_lock);
559 /* magic number. Enables interrupts(?) */
560 snd_als4000_gcr_write(chip, 0x8c, 0x28000);
561 for(i = 0x91; i <= 0x96; ++i)
562 snd_als4000_gcr_write(chip, i, 0);
563
564 snd_als4000_gcr_write(chip, 0x99, snd_als4000_gcr_read(chip, 0x99));
565 spin_unlock_irq(&chip->reg_lock);
566 }
567
568 #ifdef SUPPORT_JOYSTICK
569 static int __devinit snd_als4000_create_gameport(snd_card_als4000_t *acard, int dev)
570 {
571 struct gameport *gp;
572 struct resource *r;
573 int io_port;
574
575 if (joystick_port[dev] == 0)
576 return -ENODEV;
577
578 if (joystick_port[dev] == 1) { /* auto-detect */
579 for (io_port = 0x200; io_port <= 0x218; io_port += 8) {
580 r = request_region(io_port, 8, "ALS4000 gameport");
581 if (r)
582 break;
583 }
584 } else {
585 io_port = joystick_port[dev];
586 r = request_region(io_port, 8, "ALS4000 gameport");
587 }
588
589 if (!r) {
590 printk(KERN_WARNING "als4000: cannot reserve joystick ports\n");
591 return -EBUSY;
592 }
593
594 acard->gameport = gp = gameport_allocate_port();
595 if (!gp) {
596 printk(KERN_ERR "als4000: cannot allocate memory for gameport\n");
597 release_resource(r);
598 kfree_nocheck(r);
599 return -ENOMEM;
600 }
601
602 gameport_set_name(gp, "ALS4000 Gameport");
603 gameport_set_phys(gp, "pci%s/gameport0", pci_name(acard->pci));
604 gameport_set_dev_parent(gp, &acard->pci->dev);
605 gp->io = io_port;
606 gameport_set_port_data(gp, r);
607
608 /* Enable legacy joystick port */
609 snd_als4000_set_addr(acard->gcr, 0, 0, 0, 1);
610
611 gameport_register_port(acard->gameport);
612
613 return 0;
614 }
615
616 static void snd_als4000_free_gameport(snd_card_als4000_t *acard)
617 {
618 if (acard->gameport) {
619 struct resource *r = gameport_get_port_data(acard->gameport);
620
621 gameport_unregister_port(acard->gameport);
622 acard->gameport = NULL;
623
624 snd_als4000_set_addr(acard->gcr, 0, 0, 0, 0); /* disable joystick */
625 release_resource(r);
626 kfree_nocheck(r);
627 }
628 }
629 #else
630 static inline int snd_als4000_create_gameport(snd_card_als4000_t *acard, int dev) { return -ENOSYS; }
631 static inline void snd_als4000_free_gameport(snd_card_als4000_t *acard) { }
632 #endif
633
634 static void snd_card_als4000_free( snd_card_t *card )
635 {
636 snd_card_als4000_t * acard = (snd_card_als4000_t *)card->private_data;
637
638 /* make sure that interrupts are disabled */
639 snd_als4000_gcr_write_addr( acard->gcr, 0x8c, 0);
640 /* free resources */
641 snd_als4000_free_gameport(acard);
642 pci_release_regions(acard->pci);
643 pci_disable_device(acard->pci);
644 }
645
646 static int __devinit snd_card_als4000_probe(struct pci_dev *pci,
647 const struct pci_device_id *pci_id)
648 {
649 static int dev;
650 snd_card_t *card;
651 snd_card_als4000_t *acard;
652 unsigned long gcr;
653 sb_t *chip;
654 opl3_t *opl3;
655 unsigned short word;
656 int err;
657
658 if (dev >= SNDRV_CARDS)
659 return -ENODEV;
660 if (!enable[dev]) {
661 dev++;
662 return -ENOENT;
663 }
664
665 /* enable PCI device */
666 if ((err = pci_enable_device(pci)) < 0) {
667 return err;
668 }
669 /* check, if we can restrict PCI DMA transfers to 24 bits */
670 if (pci_set_dma_mask(pci, 0x00ffffff) < 0 ||
671 pci_set_consistent_dma_mask(pci, 0x00ffffff) < 0) {
672 snd_printk("architecture does not support 24bit PCI busmaster DMA\n");
673 pci_disable_device(pci);
674 return -ENXIO;
675 }
676
677 if ((err = pci_request_regions(pci, "ALS4000")) < 0) {
678 pci_disable_device(pci);
679 return err;
680 }
681 gcr = pci_resource_start(pci, 0);
682
683 pci_read_config_word(pci, PCI_COMMAND, &word);
684 pci_write_config_word(pci, PCI_COMMAND, word | PCI_COMMAND_IO);
685 pci_set_master(pci);
686
687 card = snd_card_new(index[dev], id[dev], THIS_MODULE,
688 sizeof( snd_card_als4000_t ) );
689 if (card == NULL) {
690 pci_release_regions(pci);
691 pci_disable_device(pci);
692 return -ENOMEM;
693 }
694
695 acard = (snd_card_als4000_t *)card->private_data;
696 acard->pci = pci;
697 acard->gcr = gcr;
698 card->private_free = snd_card_als4000_free;
699
700 /* disable all legacy ISA stuff */
701 snd_als4000_set_addr(acard->gcr, 0, 0, 0, 0);
702
703 if ((err = snd_sbdsp_create(card,
704 gcr + 0x10,
705 pci->irq,
706 snd_als4000_interrupt,
707 -1,
708 -1,
709 SB_HW_ALS4000,
710 &chip)) < 0) {
711 snd_card_free(card);
712 return err;
713 }
714
715 chip->pci = pci;
716 chip->alt_port = gcr;
717 snd_card_set_dev(card, &pci->dev);
718
719 snd_als4000_configure(chip);
720
721 strcpy(card->driver, "ALS4000");
722 strcpy(card->shortname, "Avance Logic ALS4000");
723 sprintf(card->longname, "%s at 0x%lx, irq %i",
724 card->shortname, chip->alt_port, chip->irq);
725
726 if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_ALS4000,
727 gcr+0x30, 1, pci->irq, 0,
728 &chip->rmidi)) < 0) {
729 snd_card_free(card);
730 printk(KERN_ERR "als4000: no MPU-401device at 0x%lx ?\n", gcr+0x30);
731 return err;
732 }
733
734 if ((err = snd_als4000_pcm(chip, 0)) < 0) {
735 snd_card_free(card);
736 return err;
737 }
738 if ((err = snd_sbmixer_new(chip)) < 0) {
739 snd_card_free(card);
740 return err;
741 }
742
743 if (snd_opl3_create(card, gcr+0x10, gcr+0x12,
744 OPL3_HW_AUTO, 1, &opl3) < 0) {
745 printk(KERN_ERR "als4000: no OPL device at 0x%lx-0x%lx ?\n",
746 gcr+0x10, gcr+0x12 );
747 } else {
748 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
749 snd_card_free(card);
750 return err;
751 }
752 }
753
754 snd_als4000_create_gameport(acard, dev);
755
756 if ((err = snd_card_register(card)) < 0) {
757 snd_card_free(card);
758 return err;
759 }
760 pci_set_drvdata(pci, card);
761 dev++;
762 return 0;
763 }
764
765 static void __devexit snd_card_als4000_remove(struct pci_dev *pci)
766 {
767 snd_card_free(pci_get_drvdata(pci));
768 pci_set_drvdata(pci, NULL);
769 }
770
771 static struct pci_driver driver = {
772 .name = "ALS4000",
773 .id_table = snd_als4000_ids,
774 .probe = snd_card_als4000_probe,
775 .remove = __devexit_p(snd_card_als4000_remove),
776 };
777
778 static int __init alsa_card_als4000_init(void)
779 {
780 return pci_module_init(&driver);
781 }
782
783 static void __exit alsa_card_als4000_exit(void)
784 {
785 pci_unregister_driver(&driver);
786 }
787
788 module_init(alsa_card_als4000_init)
789 module_exit(alsa_card_als4000_exit)
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