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source: GPL/alsa-kernel/pci/als4000.c@ 18

Last change on this file since 18 was 18, checked in by vladest, 20 years ago
initial import
File size: 27.1 KB

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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 <sound/pcm.h>
63	#include <sound/rawmidi.h>
64	#include <sound/mpu401.h>
65	#include <sound/opl3.h>
66	#include <sound/sb.h>
67	#define SNDRV_GET_ID
68	#include <sound/initval.h>
69
70	EXPORT_NO_SYMBOLS;
71	MODULE_DESCRIPTION("Avance Logic ALS4000");
72	MODULE_CLASSES("{sound}");
73	MODULE_DEVICES("{{Avance Logic,ALS4000}}");
74
75	static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
76	static char id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; / ID for this card */
77	static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
78	static int joystick_port[SNDRV_CARDS] =
79	#ifdef CONFIG_ISA
80	{0x200}; /* enable as default */
81	#else
82	{0}; /* disabled */
83	#endif
84
85	MODULE_PARM(index, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
86	MODULE_PARM_DESC(index, "Index value for ALS4000 soundcard.");
87	MODULE_PARM_SYNTAX(index, SNDRV_INDEX_DESC);
88	MODULE_PARM(id, "1-" __MODULE_STRING(SNDRV_CARDS) "s");
89	MODULE_PARM_DESC(id, "ID string for ALS4000 soundcard.");
90	MODULE_PARM_SYNTAX(id, SNDRV_ID_DESC);
91	MODULE_PARM(enable, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
92	MODULE_PARM_DESC(enable, "Enable ALS4000 soundcard.");
93	MODULE_PARM_SYNTAX(enable, SNDRV_INDEX_DESC);
94	MODULE_PARM(joystick_port, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
95	MODULE_PARM_DESC(joystick_port, "Joystick port address for ALS4000 soundcard. (0 = disabled)");
96	MODULE_PARM_SYNTAX(joystick_port, SNDRV_ENABLED);
97
98	typedef struct {
99	struct pci_dev *pci;
100	unsigned long gcr;
101	#ifdef SUPPORT_JOYSTICK
102	struct gameport gameport;
103	struct resource *res_joystick;
104	#endif
105	} snd_card_als4000_t;
106
107	static struct pci_device_id snd_als4000_ids[] = {
108	{ 0x4005, 0x4000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* ALS4000 */
109	{ 0, }
110	};
111
112	MODULE_DEVICE_TABLE(pci, snd_als4000_ids);
113
114	static inline void snd_als4000_gcr_write_addr(unsigned long port, u32 reg, u32 val)
115	{
116	outb(reg, port+0x0c);
117	outl(val, port+0x08);
118	}
119
120	static inline void snd_als4000_gcr_write(sb_t *sb, u32 reg, u32 val)
121	{
122	snd_als4000_gcr_write_addr(sb->alt_port, reg, val);
123	}
124
125	static inline u32 snd_als4000_gcr_read_addr(unsigned long port, u32 reg)
126	{
127	outb(reg, port+0x0c);
128	return inl(port+0x08);
129	}
130
131	static inline u32 snd_als4000_gcr_read(sb_t *sb, u32 reg)
132	{
133	return snd_als4000_gcr_read_addr(sb->alt_port, reg);
134	}
135
136	static void snd_als4000_set_rate(sb_t *chip, unsigned int rate)
137	{
138	if (!(chip->mode & SB_RATE_LOCK)) {
139	snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
140	snd_sbdsp_command(chip, rate>>8);
141	snd_sbdsp_command(chip, rate);
142	}
143	}
144
145	static void snd_als4000_set_capture_dma(sb_t *chip, dma_addr_t addr, unsigned size)
146	{
147	snd_als4000_gcr_write(chip, 0xa2, addr);
148	snd_als4000_gcr_write(chip, 0xa3, (size-1));
149	}
150
151	static void snd_als4000_set_playback_dma(sb_t *chip, dma_addr_t addr, unsigned size)
152	{
153	snd_als4000_gcr_write(chip, 0x91, addr);
154	snd_als4000_gcr_write(chip, 0x92, (size-1)\|0x180000);
155	}
156
157	#define ALS4000_FORMAT_SIGNED (1<<0)
158	#define ALS4000_FORMAT_16BIT (1<<1)
159	#define ALS4000_FORMAT_STEREO (1<<2)
160
161	static int snd_als4000_get_format(snd_pcm_runtime_t *runtime)
162	{
163	int result;
164
165	result = 0;
166	if (snd_pcm_format_signed(runtime->format))
167	result \|= ALS4000_FORMAT_SIGNED;
168	if (snd_pcm_format_physical_width(runtime->format) == 16)
169	result \|= ALS4000_FORMAT_16BIT;
170	if (runtime->channels > 1)
171	result \|= ALS4000_FORMAT_STEREO;
172	return result;
173	}
174
175	/* structure for setting up playback */
176	static struct {
177	unsigned char dsp_cmd, dma_on, dma_off, format;
178	} playback_cmd_vals[]={
179	/* ALS4000_FORMAT_U8_MONO */
180	{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_MONO },
181	/* ALS4000_FORMAT_S8_MONO */
182	{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_MONO },
183	/* ALS4000_FORMAT_U16L_MONO */
184	{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_MONO },
185	/* ALS4000_FORMAT_S16L_MONO */
186	{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_MONO },
187	/* ALS4000_FORMAT_U8_STEREO */
188	{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_STEREO },
189	/* ALS4000_FORMAT_S8_STEREO */
190	{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_STEREO },
191	/* ALS4000_FORMAT_U16L_STEREO */
192	{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_STEREO },
193	/* ALS4000_FORMAT_S16L_STEREO */
194	{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_STEREO },
195	};
196	#define playback_cmd(chip) (playback_cmd_vals[(chip)->playback_format])
197
198	/* structure for setting up capture */
199	enum { CMD_WIDTH8=0x04, CMD_SIGNED=0x10, CMD_MONO=0x80, CMD_STEREO=0xA0 };
200	static unsigned char capture_cmd_vals[]=
201	{
202	CMD_WIDTH8\|CMD_MONO, /* ALS4000_FORMAT_U8_MONO */
203	CMD_WIDTH8\|CMD_SIGNED\|CMD_MONO, /* ALS4000_FORMAT_S8_MONO */
204	CMD_MONO, /* ALS4000_FORMAT_U16L_MONO */
205	CMD_SIGNED\|CMD_MONO, /* ALS4000_FORMAT_S16L_MONO */
206	CMD_WIDTH8\|CMD_STEREO, /* ALS4000_FORMAT_U8_STEREO */
207	CMD_WIDTH8\|CMD_SIGNED\|CMD_STEREO, /* ALS4000_FORMAT_S8_STEREO */
208	CMD_STEREO, /* ALS4000_FORMAT_U16L_STEREO */
209	CMD_SIGNED\|CMD_STEREO, /* ALS4000_FORMAT_S16L_STEREO */
210	};
211	#define capture_cmd(chip) (capture_cmd_vals[(chip)->capture_format])
212
213	static int snd_als4000_hw_params(snd_pcm_substream_t * substream,
214	snd_pcm_hw_params_t * hw_params)
215	{
216	return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
217	}
218
219	static int snd_als4000_hw_free(snd_pcm_substream_t * substream)
220	{
221	snd_pcm_lib_free_pages(substream);
222	return 0;
223	}
224
225	static int snd_als4000_capture_prepare(snd_pcm_substream_t * substream)
226	{
227	unsigned long flags;
228	sb_t *chip = snd_pcm_substream_chip(substream);
229	snd_pcm_runtime_t *runtime = substream->runtime;
230	unsigned long size;
231	unsigned count;
232
233	chip->capture_format = snd_als4000_get_format(runtime);
234
235	size = snd_pcm_lib_buffer_bytes(substream);
236	count = snd_pcm_lib_period_bytes(substream);
237
238	if (chip->capture_format & ALS4000_FORMAT_16BIT)
239	count >>=1;
240	count--;
241
242	spin_lock_irqsave(&chip->reg_lock, flags);
243	snd_als4000_set_rate(chip, runtime->rate);
244	snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
245	spin_unlock_irqrestore(&chip->reg_lock, flags);
246	spin_lock_irqsave(&chip->mixer_lock, flags );
247	snd_sbmixer_write(chip, 0xdc, count);
248	snd_sbmixer_write(chip, 0xdd, count>>8);
249	spin_unlock_irqrestore(&chip->mixer_lock, flags );
250	return 0;
251	}
252
253	static int snd_als4000_playback_prepare(snd_pcm_substream_t *substream)
254	{
255	unsigned long flags;
256	sb_t *chip = snd_pcm_substream_chip(substream);
257	snd_pcm_runtime_t *runtime = substream->runtime;
258	unsigned long size;
259	unsigned count;
260
261	chip->playback_format = snd_als4000_get_format(runtime);
262
263	size = snd_pcm_lib_buffer_bytes(substream);
264	count = snd_pcm_lib_period_bytes(substream);
265
266	if (chip->playback_format & ALS4000_FORMAT_16BIT)
267	count >>=1;
268	count--;
269
270	/* FIXME: from second playback on, there's a lot more clicks and pops
271	* involved here than on first playback. Fiddling with
272	* tons of different settings didn't help (DMA, speaker on/off,
273	* reordering, ...). Something seems to get enabled on playback
274	* that I haven't found out how to disable again, which then causes
275	* the switching pops to reach the speakers the next time here. */
276	spin_lock_irqsave(&chip->reg_lock, flags);
277	snd_als4000_set_rate(chip, runtime->rate);
278	snd_als4000_set_playback_dma(chip, runtime->dma_addr, size);
279
280	/* SPEAKER_ON not needed, since dma_on seems to also enable speaker */
281	/* snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON); */
282	snd_sbdsp_command(chip, playback_cmd(chip).dsp_cmd);
283	snd_sbdsp_command(chip, playback_cmd(chip).format);
284	snd_sbdsp_command(chip, count);
285	snd_sbdsp_command(chip, count>>8);
286	snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
287	spin_unlock_irqrestore(&chip->reg_lock, flags);
288
289	return 0;
290	}
291
292	static int snd_als4000_capture_trigger(snd_pcm_substream_t * substream, int cmd)
293	{
294	sb_t *chip = snd_pcm_substream_chip(substream);
295	int result = 0;
296
297	spin_lock(&chip->mixer_lock);
298	if (cmd == SNDRV_PCM_TRIGGER_START) {
299	chip->mode \|= SB_RATE_LOCK_CAPTURE;
300	snd_sbmixer_write(chip, 0xde, capture_cmd(chip));
301	} else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
302	chip->mode &= ~SB_RATE_LOCK_CAPTURE;
303	snd_sbmixer_write(chip, 0xde, 0);
304	} else {
305	result = -EINVAL;
306	}
307	spin_unlock(&chip->mixer_lock);
308	return result;
309	}
310
311	static int snd_als4000_playback_trigger(snd_pcm_substream_t * substream, int cmd)
312	{
313	sb_t *chip = snd_pcm_substream_chip(substream);
314	int result = 0;
315
316	spin_lock(&chip->reg_lock);
317	if (cmd == SNDRV_PCM_TRIGGER_START) {
318	chip->mode \|= SB_RATE_LOCK_PLAYBACK;
319	snd_sbdsp_command(chip, playback_cmd(chip).dma_on);
320	} else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
321	snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
322	chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
323	} else {
324	result = -EINVAL;
325	}
326	spin_unlock(&chip->reg_lock);
327	return result;
328	}
329
330	static snd_pcm_uframes_t snd_als4000_capture_pointer(snd_pcm_substream_t * substream)
331	{
332	sb_t *chip = snd_pcm_substream_chip(substream);
333	unsigned int result;
334
335	spin_lock(&chip->reg_lock);
336	result = snd_als4000_gcr_read(chip, 0xa4) & 0xffff;
337	spin_unlock(&chip->reg_lock);
338	return bytes_to_frames( substream->runtime, result );
339	}
340
341	static snd_pcm_uframes_t snd_als4000_playback_pointer(snd_pcm_substream_t * substream)
342	{
343	sb_t *chip = snd_pcm_substream_chip(substream);
344	unsigned result;
345
346	spin_lock(&chip->reg_lock);
347	result = snd_als4000_gcr_read(chip, 0xa0) & 0xffff;
348	spin_unlock(&chip->reg_lock);
349	return bytes_to_frames( substream->runtime, result );
350	}
351
352	static irqreturn_t snd_als4000_interrupt(int irq, void dev_id, struct pt_regs regs)
353	{
354	sb_t *chip = dev_id;
355	unsigned gcr_status;
356	unsigned sb_status;
357	#ifdef TARGET_OS2
358	int fOurIrq = FALSE;
359	#endif
360
361	/* find out which bit of the ALS4000 produced the interrupt */
362	gcr_status = inb(chip->alt_port + 0xe);
363
364	#ifdef TARGET_OS2
365	if(gcr_status & (0x80\|0x40\|0x10)) fOurIrq = TRUE;
366	#endif
367
368	if ((gcr_status & 0x80) && (chip->playback_substream)) /* playback */
369	snd_pcm_period_elapsed(chip->playback_substream);
370	if ((gcr_status & 0x40) && (chip->capture_substream)) /* capturing */
371	snd_pcm_period_elapsed(chip->capture_substream);
372	if ((gcr_status & 0x10) && (chip->rmidi)) /* MPU401 interrupt */
373	snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
374	/* release the gcr */
375	outb(gcr_status, chip->alt_port + 0xe);
376
377	spin_lock(&chip->mixer_lock);
378	sb_status = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
379	spin_unlock(&chip->mixer_lock);
380
381	if (sb_status & SB_IRQTYPE_8BIT)
382	snd_sb_ack_8bit(chip);
383	if (sb_status & SB_IRQTYPE_16BIT)
384	snd_sb_ack_16bit(chip);
385	if (sb_status & SB_IRQTYPE_MPUIN)
386	inb(chip->mpu_port);
387	if (sb_status & 0x20)
388	inb(SBP(chip, RESET));
389
390	#ifdef TARGET_OS2
391	if (fOurIrq) {
392	eoi_irq(irq);
393	}
394	#endif //TARGET_OS2
395	return IRQ_HANDLED;
396	}
397
398	/*****************************************************************/
399
400	#ifdef TARGET_OS2
401	static snd_pcm_hardware_t snd_als4000_playback =
402	{
403	/* info: */ (SNDRV_PCM_INFO_MMAP \| SNDRV_PCM_INFO_INTERLEAVED \|
404	SNDRV_PCM_INFO_MMAP_VALID),
405	/* formats: */ SNDRV_PCM_FMTBIT_S8 \| SNDRV_PCM_FMTBIT_U8 \|
406	SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_U16_LE, /* formats */
407	/* rates: */ SNDRV_PCM_RATE_CONTINUOUS \| SNDRV_PCM_RATE_8000_48000,
408	/* rate_min: */ 4000,
409	/* rate_max: */ 48000,
410	/* channels_min: */ 1,
411	/* channels_max: */ 2,
412	/* buffer_bytes_max: */ 65536,
413	/* period_bytes_min: */ 64,
414	/* period_bytes_max: */ 65536,
415	/* periods_min: */ 1,
416	/* periods_max: */ 1024,
417	/* fifo_size: */ 0
418	};
419
420	static snd_pcm_hardware_t snd_als4000_capture =
421	{
422	/* info: */ (SNDRV_PCM_INFO_MMAP \| SNDRV_PCM_INFO_INTERLEAVED \|
423	SNDRV_PCM_INFO_MMAP_VALID),
424	/* formats: */ SNDRV_PCM_FMTBIT_S8 \| SNDRV_PCM_FMTBIT_U8 \|
425	SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_U16_LE, /* formats */
426	/* rates: */ SNDRV_PCM_RATE_CONTINUOUS \| SNDRV_PCM_RATE_8000_48000,
427	/* rate_min: */ 4000,
428	/* rate_max: */ 48000,
429	/* channels_min: */ 1,
430	/* channels_max: */ 2,
431	/* buffer_bytes_max: */ 65536,
432	/* period_bytes_min: */ 64,
433	/* period_bytes_max: */ 65536,
434	/* periods_min: */ 1,
435	/* periods_max: */ 1024,
436	/* fifo_size: */ 0
437	};
438	#else
439	static snd_pcm_hardware_t snd_als4000_playback =
440	{
441	info: (SNDRV_PCM_INFO_MMAP \| SNDRV_PCM_INFO_INTERLEAVED \|
442	SNDRV_PCM_INFO_MMAP_VALID),
443	formats: SNDRV_PCM_FMTBIT_S8 \| SNDRV_PCM_FMTBIT_U8 \|
444	SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_U16_LE, /* formats */
445	rates: SNDRV_PCM_RATE_CONTINUOUS \| SNDRV_PCM_RATE_8000_48000,
446	rate_min: 4000,
447	rate_max: 48000,
448	channels_min: 1,
449	channels_max: 2,
450	buffer_bytes_max: 65536,
451	period_bytes_min: 64,
452	period_bytes_max: 65536,
453	periods_min: 1,
454	periods_max: 1024,
455	fifo_size: 0
456	};
457
458	static snd_pcm_hardware_t snd_als4000_capture =
459	{
460	info: (SNDRV_PCM_INFO_MMAP \| SNDRV_PCM_INFO_INTERLEAVED \|
461	SNDRV_PCM_INFO_MMAP_VALID),
462	formats: SNDRV_PCM_FMTBIT_S8 \| SNDRV_PCM_FMTBIT_U8 \|
463	SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_U16_LE, /* formats */
464	rates: SNDRV_PCM_RATE_CONTINUOUS \| SNDRV_PCM_RATE_8000_48000,
465	rate_min: 4000,
466	rate_max: 48000,
467	channels_min: 1,
468	channels_max: 2,
469	buffer_bytes_max: 65536,
470	period_bytes_min: 64,
471	period_bytes_max: 65536,
472	periods_min: 1,
473	periods_max: 1024,
474	fifo_size: 0
475	};
476	#endif
477
478	/*****************************************************************/
479
480	static int snd_als4000_playback_open(snd_pcm_substream_t * substream)
481	{
482	sb_t *chip = snd_pcm_substream_chip(substream);
483	snd_pcm_runtime_t *runtime = substream->runtime;
484
485	chip->playback_substream = substream;
486	runtime->hw = snd_als4000_playback;
487	return 0;
488	}
489
490	static int snd_als4000_playback_close(snd_pcm_substream_t * substream)
491	{
492	sb_t *chip = snd_pcm_substream_chip(substream);
493
494	chip->playback_substream = NULL;
495	snd_pcm_lib_free_pages(substream);
496	return 0;
497	}
498
499	static int snd_als4000_capture_open(snd_pcm_substream_t * substream)
500	{
501	sb_t *chip = snd_pcm_substream_chip(substream);
502	snd_pcm_runtime_t *runtime = substream->runtime;
503
504	chip->capture_substream = substream;
505	runtime->hw = snd_als4000_capture;
506	return 0;
507	}
508
509	static int snd_als4000_capture_close(snd_pcm_substream_t * substream)
510	{
511	sb_t *chip = snd_pcm_substream_chip(substream);
512
513	chip->capture_substream = NULL;
514	snd_pcm_lib_free_pages(substream);
515	return 0;
516	}
517
518	/******************************************************************/
519
520	#ifdef TARGET_OS2
521	static snd_pcm_ops_t snd_als4000_playback_ops = {
522	snd_als4000_playback_open,
523	snd_als4000_playback_close,
524	snd_pcm_lib_ioctl,
525	snd_als4000_hw_params,
526	snd_als4000_hw_free,
527	snd_als4000_playback_prepare,
528	snd_als4000_playback_trigger,
529	snd_als4000_playback_pointer,0,0
530	};
531
532	static snd_pcm_ops_t snd_als4000_capture_ops = {
533	snd_als4000_capture_open,
534	snd_als4000_capture_close,
535	snd_pcm_lib_ioctl,
536	snd_als4000_hw_params,
537	snd_als4000_hw_free,
538	snd_als4000_capture_prepare,
539	snd_als4000_capture_trigger,
540	snd_als4000_capture_pointer,0,0
541	};
542	#else
543	static snd_pcm_ops_t snd_als4000_playback_ops = {
544	open: snd_als4000_playback_open,
545	close: snd_als4000_playback_close,
546	ioctl: snd_pcm_lib_ioctl,
547	hw_params: snd_als4000_hw_params,
548	hw_free: snd_als4000_hw_free,
549	prepare: snd_als4000_playback_prepare,
550	trigger: snd_als4000_playback_trigger,
551	pointer: snd_als4000_playback_pointer
552	};
553
554	static snd_pcm_ops_t snd_als4000_capture_ops = {
555	open: snd_als4000_capture_open,
556	close: snd_als4000_capture_close,
557	ioctl: snd_pcm_lib_ioctl,
558	hw_params: snd_als4000_hw_params,
559	hw_free: snd_als4000_hw_free,
560	prepare: snd_als4000_capture_prepare,
561	trigger: snd_als4000_capture_trigger,
562	pointer: snd_als4000_capture_pointer
563	};
564	#endif
565
566	static void snd_als4000_pcm_free(snd_pcm_t *pcm)
567	{
568	sb_t *chip = pcm->private_data;
569	chip->pcm = NULL;
570	snd_pcm_lib_preallocate_free_for_all(pcm);
571	}
572
573	static int __devinit snd_als4000_pcm(sb_t *chip, int device)
574	{
575	snd_pcm_t *pcm;
576	int err;
577
578	if ((err = snd_pcm_new(chip->card, "ALS4000 DSP", device, 1, 1, &pcm)) < 0)
579	return err;
580	pcm->private_free = snd_als4000_pcm_free;
581	pcm->private_data = chip;
582	pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
583	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_als4000_playback_ops);
584	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_als4000_capture_ops);
585
586	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
587	641024, 641024);
588
589	chip->pcm = pcm;
590
591	return 0;
592	}
593
594	/******************************************************************/
595
596	static void __devinit snd_als4000_set_addr(unsigned long gcr,
597	unsigned int sb,
598	unsigned int mpu,
599	unsigned int opl,
600	unsigned int game)
601	{
602	u32 confA = 0;
603	u32 confB = 0;
604
605	if (mpu > 0)
606	confB \|= (mpu \| 1) << 16;
607	if (sb > 0)
608	confB \|= (sb \| 1);
609	if (game > 0)
610	confA \|= (game \| 1) << 16;
611	if (opl > 0)
612	confA \|= (opl \| 1);
613	snd_als4000_gcr_write_addr(gcr, 0xa8, confA);
614	snd_als4000_gcr_write_addr(gcr, 0xa9, confB);
615	}
616
617	static void __devinit snd_als4000_configure(sb_t *chip)
618	{
619	unsigned tmp;
620	int i;
621
622	/* do some more configuration */
623	spin_lock_irq(&chip->mixer_lock);
624	tmp = snd_sbmixer_read(chip, 0xc0);
625	snd_sbmixer_write(chip, 0xc0, tmp\|0x80);
626	/* always select DMA channel 0, since we do not actually use DMA */
627	snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
628	snd_sbmixer_write(chip, 0xc0, tmp&0x7f);
629	spin_unlock_irq(&chip->mixer_lock);
630
631	spin_lock_irq(&chip->reg_lock);
632	/* magic number. Enables interrupts(?) */
633	snd_als4000_gcr_write(chip, 0x8c, 0x28000);
634	for(i = 0x91; i <= 0x96; ++i)
635	snd_als4000_gcr_write(chip, i, 0);
636
637	snd_als4000_gcr_write(chip, 0x99, snd_als4000_gcr_read(chip, 0x99));
638	spin_unlock_irq(&chip->reg_lock);
639	}
640
641	static void snd_card_als4000_free( snd_card_t *card )
642	{
643	snd_card_als4000_t * acard = (snd_card_als4000_t *)card->private_data;
644	/* make sure that interrupts are disabled */
645	snd_als4000_gcr_write_addr( acard->gcr, 0x8c, 0);
646	/* free resources */
647	#ifdef SUPPORT_JOYSTICK
648	if (acard->res_joystick) {
649	if (acard->gameport.io)
650	gameport_unregister_port(&acard->gameport);
651	snd_als4000_set_addr(acard->gcr, 0, 0, 0, 0); /* disable joystick */
652	release_resource(acard->res_joystick);
653	kfree_nocheck(acard->res_joystick);
654	}
655	#endif
656	pci_release_regions(acard->pci);
657	}
658
659	static int __devinit snd_card_als4000_probe(struct pci_dev *pci,
660	const struct pci_device_id *pci_id)
661	{
662	static int dev;
663	snd_card_t *card;
664	snd_card_als4000_t *acard;
665	unsigned long gcr;
666	sb_t *chip;
667	opl3_t *opl3;
668	unsigned short word;
669	int err;
670
671	if (dev >= SNDRV_CARDS)
672	return -ENODEV;
673	if (!enable[dev]) {
674	dev++;
675	return -ENOENT;
676	}
677
678	/* enable PCI device */
679	if ((err = pci_enable_device(pci)) < 0) {
680	return err;
681	}
682	/* check, if we can restrict PCI DMA transfers to 24 bits */
683	if (!pci_dma_supported(pci, 0x00ffffff)) {
684	snd_printk("architecture does not support 24bit PCI busmaster DMA\n");
685	return -ENXIO;
686	}
687	pci_set_dma_mask(pci, 0x00ffffff);
688
689	if ((err = pci_request_regions(pci, "ALS4000")) < 0)
690	return err;
691	gcr = pci_resource_start(pci, 0);
692
693	pci_read_config_word(pci, PCI_COMMAND, &word);
694	pci_write_config_word(pci, PCI_COMMAND, word \| PCI_COMMAND_IO);
695	pci_set_master(pci);
696
697	/* disable all legacy ISA stuff except for joystick */
698	snd_als4000_set_addr(gcr, 0, 0, 0, joystick_port[dev]);
699
700	card = snd_card_new(index[dev], id[dev], THIS_MODULE,
701	sizeof( snd_card_als4000_t ) );
702	if (card == NULL) {
703	pci_release_regions(pci);
704	return -ENOMEM;
705	}
706
707	acard = (snd_card_als4000_t *)card->private_data;
708	acard->pci = pci;
709	acard->gcr = gcr;
710	card->private_free = snd_card_als4000_free;
711
712	if ((err = snd_sbdsp_create(card,
713	gcr + 0x10,
714	pci->irq,
715	snd_als4000_interrupt,
716	-1,
717	-1,
718	SB_HW_ALS4000,
719	&chip)) < 0) {
720	snd_card_free(card);
721	return err;
722	}
723
724	chip->pci = pci;
725	chip->alt_port = gcr;
726
727	snd_als4000_configure(chip);
728
729	if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_ALS4000,
730	gcr+0x30, 1, pci->irq, 0,
731	&chip->rmidi)) < 0) {
732	snd_card_free(card);
733	snd_printk("no MPU-401device at 0x%lx ?\n", gcr+0x30);
734	return err;
735	}
736
737	if ((err = snd_als4000_pcm(chip, 0)) < 0) {
738	snd_card_free(card);
739	return err;
740	}
741	if ((err = snd_sbmixer_new(chip)) < 0) {
742	snd_card_free(card);
743	return err;
744	}
745
746	if (snd_opl3_create(card, gcr+0x10, gcr+0x12,
747	OPL3_HW_AUTO, 1, &opl3) < 0) {
748	snd_printk("no OPL device at 0x%lx-0x%lx ?\n",
749	gcr+0x10, gcr+0x12 );
750	} else {
751	if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
752	snd_card_free(card);
753	return err;
754	}
755	}
756
757	strcpy(card->driver, "ALS4000");
758	strcpy(card->shortname, "Avance Logic ALS4000");
759	sprintf(card->longname, "%s at 0x%lx, irq %i",
760	card->shortname, chip->alt_port, chip->irq);
761
762	if ((err = snd_card_register(card)) < 0) {
763	snd_card_free(card);
764	return err;
765	}
766	pci_set_drvdata(pci, card);
767	dev++;
768	return 0;
769	}
770
771	static void __devexit snd_card_als4000_remove(struct pci_dev *pci)
772	{
773	snd_card_free(pci_get_drvdata(pci));
774	pci_set_drvdata(pci, NULL);
775	}
776
777	#ifdef TARGET_OS2
778	static struct pci_driver driver = {
779	0,0,0,"ALS4000",
780	snd_als4000_ids,
781	snd_card_als4000_probe,
782	snd_card_als4000_remove,0,0
783	};
784	#else
785	static struct pci_driver driver = {
786	name: "ALS4000",
787	id_table: snd_als4000_ids,
788	probe: snd_card_als4k_probe,
789	remove: snd_card_als4k_remove,
790	};
791	#endif
792
793	static int __init alsa_card_als4000_init(void)
794	{
795	int err;
796
797	if ((err = pci_module_init(&driver)) < 0) {
798	#ifdef MODULE
799	// snd_printk("no ALS4000 based soundcards found or device busy\n");
800	#endif
801	return err;
802	}
803	return 0;
804	}
805
806	static void __exit alsa_card_als4000_exit(void)
807	{
808	pci_unregister_driver(&driver);
809	}
810
811	module_init(alsa_card_als4000_init)
812	module_exit(alsa_card_als4000_exit)
813
814	#ifndef MODULE
815
816	/* format is: snd-als4000=enable,index,id */
817
818	static int __init alsa_card_als4000_setup(char *str)
819	{
820	static unsigned __initdata nr_dev = 0;
821
822	if (nr_dev >= SNDRV_CARDS)
823	return 0;
824	(void)(get_option(&str,&enable[nr_dev]) == 2 &&
825	get_option(&str,&index[nr_dev]) == 2 &&
826	get_id(&str,&id[nr_dev]) == 2);
827	nr_dev++;
828	return 1;
829	}
830
831	__setup("snd-als4000=", alsa_card_als4000_setup);
832
833	#endif /* ifndef MODULE */

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