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source: GPL/trunk/alsa-kernel/pci/als4000.c@ 596

Last change on this file since 596 was 426, checked in by Paul Smedley, 16 years ago
Update alsa-kernel to ALSA 1.0.20 level
File size: 31.4 KB

Line
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@perex.cz>
5	* Copyright (C) 2002, 2008 by Andreas Mohr <hw7oshyuv3001@sneakemail.com>
6	*
7	* Framework borrowed from Massimo Piccioni's card-als100.c.
8	*
9	*
10	* This program is free software; you can redistribute it and/or modify
11	* it under the terms of the GNU General Public License as published by
12	* the Free Software Foundation; either version 2 of the License, or
13	* (at your option) any later version.
14	*
15	* This program is distributed in the hope that it will be useful,
16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18	* GNU General Public License for more details.
19
20	* You should have received a copy of the GNU General Public License
21	* along with this program; if not, write to the Free Software
22	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23	*
24	* NOTES
25	*
26	* Since Avance does not provide any meaningful documentation, and I
27	* bought an ALS4000 based soundcard, I was forced to base this driver
28	* on reverse engineering.
29	*
30	* Note: this is no longer true (thank you!):
31	* pretty verbose chip docu (ALS4000a.PDF) can be found on the ALSA web site.
32	* Page numbers stated anywhere below with the "SPECS_PAGE:" tag
33	* refer to: ALS4000a.PDF specs Ver 1.0, May 28th, 1998.
34	*
35	* The ALS4000 seems to be the PCI-cousin of the ALS100. It contains an
36	* ALS100-like SB DSP/mixer, an OPL3 synth, a MPU401 and a gameport
37	* interface. These subsystems can be mapped into ISA io-port space,
38	* using the PCI-interface. In addition, the PCI-bit provides DMA and IRQ
39	* services to the subsystems.
40	*
41	* While ALS4000 is very similar to a SoundBlaster, the differences in
42	* DMA and capturing require more changes to the SoundBlaster than
43	* desirable, so I made this separate driver.
44	*
45	* The ALS4000 can do real full duplex playback/capture.
46	*
47	* FMDAC:
48	* - 0x4f -> port 0x14
49	* - port 0x15 \|= 1
50	*
51	* Enable/disable 3D sound:
52	* - 0x50 -> port 0x14
53	* - change bit 6 (0x40) of port 0x15
54	*
55	* Set QSound:
56	* - 0xdb -> port 0x14
57	* - set port 0x15:
58	* 0x3e (mode 3), 0x3c (mode 2), 0x3a (mode 1), 0x38 (mode 0)
59	*
60	* Set KSound:
61	* - value -> some port 0x0c0d
62	*
63	* ToDo:
64	* - by default, don't enable legacy game and use PCI game I/O
65	* - power management? (card can do voice wakeup according to datasheet!!)
66	*/
67
68	#include <asm/io.h>
69	#include <linux/init.h>
70	#include <linux/pci.h>
71	#include <linux/slab.h>
72	#include <linux/gameport.h>
73	#include <linux/moduleparam.h>
74	#include <linux/dma-mapping.h>
75	#include <sound/core.h>
76	#include <sound/pcm.h>
77	#include <sound/rawmidi.h>
78	#include <sound/mpu401.h>
79	#include <sound/opl3.h>
80	#include <sound/sb.h>
81	#include <sound/initval.h>
82
83	MODULE_AUTHOR("Bart Hartgers <bart@etpmod.phys.tue.nl>, Andreas Mohr");
84	MODULE_DESCRIPTION("Avance Logic ALS4000");
85	MODULE_LICENSE("GPL");
86	MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS4000}}");
87
88	#if defined(CONFIG_GAMEPORT) \|\| (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
89	#define SUPPORT_JOYSTICK 1
90	#endif
91
92	static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
93	static char id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; / ID for this card */
94	static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
95	#ifdef SUPPORT_JOYSTICK
96	static int joystick_port[SNDRV_CARDS];
97	#endif
98
99	module_param_array(index, int, NULL, 0444);
100	MODULE_PARM_DESC(index, "Index value for ALS4000 soundcard.");
101	module_param_array(id, charp, NULL, 0444);
102	MODULE_PARM_DESC(id, "ID string for ALS4000 soundcard.");
103	module_param_array(enable, bool, NULL, 0444);
104	MODULE_PARM_DESC(enable, "Enable ALS4000 soundcard.");
105	#ifdef SUPPORT_JOYSTICK
106	module_param_array(joystick_port, int, NULL, 0444);
107	MODULE_PARM_DESC(joystick_port, "Joystick port address for ALS4000 soundcard. (0 = disabled)");
108	#endif
109
110	struct snd_card_als4000 {
111	/* most frequent access first */
112	unsigned long iobase;
113	struct pci_dev *pci;
114	struct snd_sb *chip;
115	#ifdef SUPPORT_JOYSTICK
116	struct gameport *gameport;
117	#endif
118	};
119
120	static struct pci_device_id snd_als4000_ids[] = {
121	{ 0x4005, 0x4000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* ALS4000 */
122	{ 0, }
123	};
124
125	MODULE_DEVICE_TABLE(pci, snd_als4000_ids);
126
127	enum als4k_iobase_t {
128	/* IOx: B == Byte, W = Word, D = DWord; SPECS_PAGE: 37 */
129	ALS4K_IOD_00_AC97_ACCESS = 0x00,
130	ALS4K_IOW_04_AC97_READ = 0x04,
131	ALS4K_IOB_06_AC97_STATUS = 0x06,
132	ALS4K_IOB_07_IRQSTATUS = 0x07,
133	ALS4K_IOD_08_GCR_DATA = 0x08,
134	ALS4K_IOB_0C_GCR_INDEX = 0x0c,
135	ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU = 0x0e,
136	ALS4K_IOB_10_ADLIB_ADDR0 = 0x10,
137	ALS4K_IOB_11_ADLIB_ADDR1 = 0x11,
138	ALS4K_IOB_12_ADLIB_ADDR2 = 0x12,
139	ALS4K_IOB_13_ADLIB_ADDR3 = 0x13,
140	ALS4K_IOB_14_MIXER_INDEX = 0x14,
141	ALS4K_IOB_15_MIXER_DATA = 0x15,
142	ALS4K_IOB_16_ESP_RESET = 0x16,
143	ALS4K_IOB_16_ACK_FOR_CR1E = 0x16, /* 2nd function */
144	ALS4K_IOB_18_OPL_ADDR0 = 0x18,
145	ALS4K_IOB_19_OPL_ADDR1 = 0x19,
146	ALS4K_IOB_1A_ESP_RD_DATA = 0x1a,
147	ALS4K_IOB_1C_ESP_CMD_DATA = 0x1c,
148	ALS4K_IOB_1C_ESP_WR_STATUS = 0x1c, /* 2nd function */
149	ALS4K_IOB_1E_ESP_RD_STATUS8 = 0x1e,
150	ALS4K_IOB_1F_ESP_RD_STATUS16 = 0x1f,
151	ALS4K_IOB_20_ESP_GAMEPORT_200 = 0x20,
152	ALS4K_IOB_21_ESP_GAMEPORT_201 = 0x21,
153	ALS4K_IOB_30_MIDI_DATA = 0x30,
154	ALS4K_IOB_31_MIDI_STATUS = 0x31,
155	ALS4K_IOB_31_MIDI_COMMAND = 0x31, /* 2nd function */
156	};
157
158	enum als4k_iobase_0e_t {
159	ALS4K_IOB_0E_MPU_IRQ = 0x10,
160	ALS4K_IOB_0E_CR1E_IRQ = 0x40,
161	ALS4K_IOB_0E_SB_DMA_IRQ = 0x80,
162	};
163
164	enum als4k_gcr_t { /* all registers 32bit wide; SPECS_PAGE: 38 to 42 */
165	ALS4K_GCR8C_MISC_CTRL = 0x8c,
166	ALS4K_GCR90_TEST_MODE_REG = 0x90,
167	ALS4K_GCR91_DMA0_ADDR = 0x91,
168	ALS4K_GCR92_DMA0_MODE_COUNT = 0x92,
169	ALS4K_GCR93_DMA1_ADDR = 0x93,
170	ALS4K_GCR94_DMA1_MODE_COUNT = 0x94,
171	ALS4K_GCR95_DMA3_ADDR = 0x95,
172	ALS4K_GCR96_DMA3_MODE_COUNT = 0x96,
173	ALS4K_GCR99_DMA_EMULATION_CTRL = 0x99,
174	ALS4K_GCRA0_FIFO1_CURRENT_ADDR = 0xa0,
175	ALS4K_GCRA1_FIFO1_STATUS_BYTECOUNT = 0xa1,
176	ALS4K_GCRA2_FIFO2_PCIADDR = 0xa2,
177	ALS4K_GCRA3_FIFO2_COUNT = 0xa3,
178	ALS4K_GCRA4_FIFO2_CURRENT_ADDR = 0xa4,
179	ALS4K_GCRA5_FIFO1_STATUS_BYTECOUNT = 0xa5,
180	ALS4K_GCRA6_PM_CTRL = 0xa6,
181	ALS4K_GCRA7_PCI_ACCESS_STORAGE = 0xa7,
182	ALS4K_GCRA8_LEGACY_CFG1 = 0xa8,
183	ALS4K_GCRA9_LEGACY_CFG2 = 0xa9,
184	ALS4K_GCRFF_DUMMY_SCRATCH = 0xff,
185	};
186
187	enum als4k_gcr8c_t {
188	ALS4K_GCR8C_IRQ_MASK_CTRL_ENABLE = 0x8000,
189	ALS4K_GCR8C_CHIP_REV_MASK = 0xf0000
190	};
191
192	static inline void snd_als4k_iobase_writeb(unsigned long iobase,
193	enum als4k_iobase_t reg,
194	u8 val)
195	{
196	outb(val, iobase + reg);
197	}
198
199	static inline void snd_als4k_iobase_writel(unsigned long iobase,
200	enum als4k_iobase_t reg,
201	u32 val)
202	{
203	outl(val, iobase + reg);
204	}
205
206	static inline u8 snd_als4k_iobase_readb(unsigned long iobase,
207	enum als4k_iobase_t reg)
208	{
209	return inb(iobase + reg);
210	}
211
212	static inline u32 snd_als4k_iobase_readl(unsigned long iobase,
213	enum als4k_iobase_t reg)
214	{
215	return inl(iobase + reg);
216	}
217
218	static inline void snd_als4k_gcr_write_addr(unsigned long iobase,
219	enum als4k_gcr_t reg,
220	u32 val)
221	{
222	snd_als4k_iobase_writeb(iobase, ALS4K_IOB_0C_GCR_INDEX, reg);
223	snd_als4k_iobase_writel(iobase, ALS4K_IOD_08_GCR_DATA, val);
224	}
225
226	static inline void snd_als4k_gcr_write(struct snd_sb *sb,
227	enum als4k_gcr_t reg,
228	u32 val)
229	{
230	snd_als4k_gcr_write_addr(sb->alt_port, reg, val);
231	}
232
233	static inline u32 snd_als4k_gcr_read_addr(unsigned long iobase,
234	enum als4k_gcr_t reg)
235	{
236	/* SPECS_PAGE: 37/38 */
237	snd_als4k_iobase_writeb(iobase, ALS4K_IOB_0C_GCR_INDEX, reg);
238	return snd_als4k_iobase_readl(iobase, ALS4K_IOD_08_GCR_DATA);
239	}
240
241	static inline u32 snd_als4k_gcr_read(struct snd_sb *sb, enum als4k_gcr_t reg)
242	{
243	return snd_als4k_gcr_read_addr(sb->alt_port, reg);
244	}
245
246	enum als4k_cr_t { /* all registers 8bit wide; SPECS_PAGE: 20 to 23 */
247	ALS4K_CR0_SB_CONFIG = 0x00,
248	ALS4K_CR2_MISC_CONTROL = 0x02,
249	ALS4K_CR3_CONFIGURATION = 0x03,
250	ALS4K_CR17_FIFO_STATUS = 0x17,
251	ALS4K_CR18_ESP_MAJOR_VERSION = 0x18,
252	ALS4K_CR19_ESP_MINOR_VERSION = 0x19,
253	ALS4K_CR1A_MPU401_UART_MODE_CONTROL = 0x1a,
254	ALS4K_CR1C_FIFO2_BLOCK_LENGTH_LO = 0x1c,
255	ALS4K_CR1D_FIFO2_BLOCK_LENGTH_HI = 0x1d,
256	ALS4K_CR1E_FIFO2_CONTROL = 0x1e, /* secondary PCM FIFO (recording) */
257	ALS4K_CR3A_MISC_CONTROL = 0x3a,
258	ALS4K_CR3B_CRC32_BYTE0 = 0x3b, /* for testing, activate via CR3A */
259	ALS4K_CR3C_CRC32_BYTE1 = 0x3c,
260	ALS4K_CR3D_CRC32_BYTE2 = 0x3d,
261	ALS4K_CR3E_CRC32_BYTE3 = 0x3e,
262	};
263
264	enum als4k_cr0_t {
265	ALS4K_CR0_DMA_CONTIN_MODE_CTRL = 0x02, /* IRQ/FIFO controlled for 0/1 */
266	ALS4K_CR0_DMA_90H_MODE_CTRL = 0x04, /* IRQ/FIFO controlled for 0/1 */
267	ALS4K_CR0_MX80_81_REG_WRITE_ENABLE = 0x80,
268	};
269
270	static inline void snd_als4_cr_write(struct snd_sb *chip,
271	enum als4k_cr_t reg,
272	u8 data)
273	{
274	/* Control Register is reg \| 0xc0 (bit 7, 6 set) on sbmixer_index
275	* NOTE: assumes chip->mixer_lock to be locked externally already!
276	* SPECS_PAGE: 6 */
277	snd_sbmixer_write(chip, reg \| 0xc0, data);
278	}
279
280	static inline u8 snd_als4_cr_read(struct snd_sb *chip,
281	enum als4k_cr_t reg)
282	{
283	/* NOTE: assumes chip->mixer_lock to be locked externally already! */
284	return snd_sbmixer_read(chip, reg \| 0xc0);
285	}
286
287
288
289	static void snd_als4000_set_rate(struct snd_sb *chip, unsigned int rate)
290	{
291	if (!(chip->mode & SB_RATE_LOCK)) {
292	snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
293	snd_sbdsp_command(chip, rate>>8);
294	snd_sbdsp_command(chip, rate);
295	}
296	}
297
298	static inline void snd_als4000_set_capture_dma(struct snd_sb *chip,
299	dma_addr_t addr, unsigned size)
300	{
301	/* SPECS_PAGE: 40 */
302	snd_als4k_gcr_write(chip, ALS4K_GCRA2_FIFO2_PCIADDR, addr);
303	snd_als4k_gcr_write(chip, ALS4K_GCRA3_FIFO2_COUNT, (size-1));
304	}
305
306	static inline void snd_als4000_set_playback_dma(struct snd_sb *chip,
307	dma_addr_t addr,
308	unsigned size)
309	{
310	/* SPECS_PAGE: 38 */
311	snd_als4k_gcr_write(chip, ALS4K_GCR91_DMA0_ADDR, addr);
312	snd_als4k_gcr_write(chip, ALS4K_GCR92_DMA0_MODE_COUNT,
313	(size-1)\|0x180000);
314	}
315
316	#define ALS4000_FORMAT_SIGNED (1<<0)
317	#define ALS4000_FORMAT_16BIT (1<<1)
318	#define ALS4000_FORMAT_STEREO (1<<2)
319
320	static int snd_als4000_get_format(struct snd_pcm_runtime *runtime)
321	{
322	int result;
323
324	result = 0;
325	if (snd_pcm_format_signed(runtime->format))
326	result \|= ALS4000_FORMAT_SIGNED;
327	if (snd_pcm_format_physical_width(runtime->format) == 16)
328	result \|= ALS4000_FORMAT_16BIT;
329	if (runtime->channels > 1)
330	result \|= ALS4000_FORMAT_STEREO;
331	return result;
332	}
333
334	/* structure for setting up playback */
335	static const struct {
336	unsigned char dsp_cmd, dma_on, dma_off, format;
337	} playback_cmd_vals[]={
338	/* ALS4000_FORMAT_U8_MONO */
339	{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_MONO },
340	/* ALS4000_FORMAT_S8_MONO */
341	{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_MONO },
342	/* ALS4000_FORMAT_U16L_MONO */
343	{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_MONO },
344	/* ALS4000_FORMAT_S16L_MONO */
345	{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_MONO },
346	/* ALS4000_FORMAT_U8_STEREO */
347	{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_STEREO },
348	/* ALS4000_FORMAT_S8_STEREO */
349	{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_STEREO },
350	/* ALS4000_FORMAT_U16L_STEREO */
351	{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_STEREO },
352	/* ALS4000_FORMAT_S16L_STEREO */
353	{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_STEREO },
354	};
355	#define playback_cmd(chip) (playback_cmd_vals[(chip)->playback_format])
356
357	/* structure for setting up capture */
358	enum { CMD_WIDTH8=0x04, CMD_SIGNED=0x10, CMD_MONO=0x80, CMD_STEREO=0xA0 };
359	static const unsigned char capture_cmd_vals[]=
360	{
361	CMD_WIDTH8\|CMD_MONO, /* ALS4000_FORMAT_U8_MONO */
362	CMD_WIDTH8\|CMD_SIGNED\|CMD_MONO, /* ALS4000_FORMAT_S8_MONO */
363	CMD_MONO, /* ALS4000_FORMAT_U16L_MONO */
364	CMD_SIGNED\|CMD_MONO, /* ALS4000_FORMAT_S16L_MONO */
365	CMD_WIDTH8\|CMD_STEREO, /* ALS4000_FORMAT_U8_STEREO */
366	CMD_WIDTH8\|CMD_SIGNED\|CMD_STEREO, /* ALS4000_FORMAT_S8_STEREO */
367	CMD_STEREO, /* ALS4000_FORMAT_U16L_STEREO */
368	CMD_SIGNED\|CMD_STEREO, /* ALS4000_FORMAT_S16L_STEREO */
369	};
370	#define capture_cmd(chip) (capture_cmd_vals[(chip)->capture_format])
371
372	static int snd_als4000_hw_params(struct snd_pcm_substream *substream,
373	struct snd_pcm_hw_params *hw_params)
374	{
375	return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
376	}
377
378	static int snd_als4000_hw_free(struct snd_pcm_substream *substream)
379	{
380	snd_pcm_lib_free_pages(substream);
381	return 0;
382	}
383
384	static int snd_als4000_capture_prepare(struct snd_pcm_substream *substream)
385	{
386	struct snd_sb *chip = snd_pcm_substream_chip(substream);
387	struct snd_pcm_runtime *runtime = substream->runtime;
388	unsigned long size;
389	unsigned count;
390
391	chip->capture_format = snd_als4000_get_format(runtime);
392
393	size = snd_pcm_lib_buffer_bytes(substream);
394	count = snd_pcm_lib_period_bytes(substream);
395
396	if (chip->capture_format & ALS4000_FORMAT_16BIT)
397	count >>= 1;
398	count--;
399
400	spin_lock_irq(&chip->reg_lock);
401	snd_als4000_set_rate(chip, runtime->rate);
402	snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
403	spin_unlock_irq(&chip->reg_lock);
404	spin_lock_irq(&chip->mixer_lock);
405	snd_als4_cr_write(chip, ALS4K_CR1C_FIFO2_BLOCK_LENGTH_LO, count & 0xff);
406	snd_als4_cr_write(chip, ALS4K_CR1D_FIFO2_BLOCK_LENGTH_HI, count >> 8);
407	spin_unlock_irq(&chip->mixer_lock);
408	return 0;
409	}
410
411	static int snd_als4000_playback_prepare(struct snd_pcm_substream *substream)
412	{
413	struct snd_sb *chip = snd_pcm_substream_chip(substream);
414	struct snd_pcm_runtime *runtime = substream->runtime;
415	unsigned long size;
416	unsigned count;
417
418	chip->playback_format = snd_als4000_get_format(runtime);
419
420	size = snd_pcm_lib_buffer_bytes(substream);
421	count = snd_pcm_lib_period_bytes(substream);
422
423	if (chip->playback_format & ALS4000_FORMAT_16BIT)
424	count >>= 1;
425	count--;
426
427	/* FIXME: from second playback on, there's a lot more clicks and pops
428	* involved here than on first playback. Fiddling with
429	* tons of different settings didn't help (DMA, speaker on/off,
430	* reordering, ...). Something seems to get enabled on playback
431	* that I haven't found out how to disable again, which then causes
432	* the switching pops to reach the speakers the next time here. */
433	spin_lock_irq(&chip->reg_lock);
434	snd_als4000_set_rate(chip, runtime->rate);
435	snd_als4000_set_playback_dma(chip, runtime->dma_addr, size);
436
437	/* SPEAKER_ON not needed, since dma_on seems to also enable speaker */
438	/* snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON); */
439	snd_sbdsp_command(chip, playback_cmd(chip).dsp_cmd);
440	snd_sbdsp_command(chip, playback_cmd(chip).format);
441	snd_sbdsp_command(chip, count & 0xff);
442	snd_sbdsp_command(chip, count >> 8);
443	snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
444	spin_unlock_irq(&chip->reg_lock);
445
446	return 0;
447	}
448
449	static int snd_als4000_capture_trigger(struct snd_pcm_substream *substream, int cmd)
450	{
451	struct snd_sb *chip = snd_pcm_substream_chip(substream);
452	int result = 0;
453
454	/* FIXME race condition in here!!!
455	chip->mode non-atomic update gets consistently protected
456	by reg_lock always, _except_ for this place!!
457	Probably need to take reg_lock as outer (or inner??) lock, too.
458	(or serialize both lock operations? probably not, though... - racy?)
459	*/
460	spin_lock(&chip->mixer_lock);
461	switch (cmd) {
462	case SNDRV_PCM_TRIGGER_START:
463	case SNDRV_PCM_TRIGGER_RESUME:
464	chip->mode \|= SB_RATE_LOCK_CAPTURE;
465	snd_als4_cr_write(chip, ALS4K_CR1E_FIFO2_CONTROL,
466	capture_cmd(chip));
467	break;
468	case SNDRV_PCM_TRIGGER_STOP:
469	case SNDRV_PCM_TRIGGER_SUSPEND:
470	chip->mode &= ~SB_RATE_LOCK_CAPTURE;
471	snd_als4_cr_write(chip, ALS4K_CR1E_FIFO2_CONTROL,
472	capture_cmd(chip));
473	break;
474	default:
475	result = -EINVAL;
476	break;
477	}
478	spin_unlock(&chip->mixer_lock);
479	return result;
480	}
481
482	static int snd_als4000_playback_trigger(struct snd_pcm_substream *substream, int cmd)
483	{
484	struct snd_sb *chip = snd_pcm_substream_chip(substream);
485	int result = 0;
486
487	spin_lock(&chip->reg_lock);
488	switch (cmd) {
489	case SNDRV_PCM_TRIGGER_START:
490	case SNDRV_PCM_TRIGGER_RESUME:
491	chip->mode \|= SB_RATE_LOCK_PLAYBACK;
492	snd_sbdsp_command(chip, playback_cmd(chip).dma_on);
493	break;
494	case SNDRV_PCM_TRIGGER_STOP:
495	case SNDRV_PCM_TRIGGER_SUSPEND:
496	snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
497	chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
498	break;
499	default:
500	result = -EINVAL;
501	break;
502	}
503	spin_unlock(&chip->reg_lock);
504	return result;
505	}
506
507	static snd_pcm_uframes_t snd_als4000_capture_pointer(struct snd_pcm_substream *substream)
508	{
509	struct snd_sb *chip = snd_pcm_substream_chip(substream);
510	unsigned int result;
511
512	spin_lock(&chip->reg_lock);
513	result = snd_als4k_gcr_read(chip, ALS4K_GCRA4_FIFO2_CURRENT_ADDR);
514	spin_unlock(&chip->reg_lock);
515	result &= 0xffff;
516	return bytes_to_frames( substream->runtime, result );
517	}
518
519	static snd_pcm_uframes_t snd_als4000_playback_pointer(struct snd_pcm_substream *substream)
520	{
521	struct snd_sb *chip = snd_pcm_substream_chip(substream);
522	unsigned result;
523
524	spin_lock(&chip->reg_lock);
525	result = snd_als4k_gcr_read(chip, ALS4K_GCRA0_FIFO1_CURRENT_ADDR);
526	spin_unlock(&chip->reg_lock);
527	result &= 0xffff;
528	return bytes_to_frames( substream->runtime, result );
529	}
530
531	/* FIXME: this IRQ routine doesn't really support IRQ sharing (we always
532	* return IRQ_HANDLED no matter whether we actually had an IRQ flag or not).
533	* ALS4000a.PDF writes that while ACKing IRQ in PCI block will not ACK
534	* the IRQ in the SB core, ACKing IRQ in SB block will ACK the PCI IRQ
535	* register (alt_port + ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU). Probably something
536	* could be optimized here to query/write one register only...
537	* And even if both registers need to be queried, then there's still the
538	* question of whether it's actually correct to ACK PCI IRQ before reading
539	* SB IRQ like we do now, since ALS4000a.PDF mentions that PCI IRQ will clear
540	* SB IRQ status.
541	* (hmm, SPECS_PAGE: 38 mentions it the other way around!)
542	* And do we really need the lock here for reading SB_DSP4_IRQSTATUS??
543	* */
544	static irqreturn_t snd_als4000_interrupt(int irq, void *dev_id)
545	{
546	struct snd_sb *chip = dev_id;
547	unsigned pci_irqstatus;
548	unsigned sb_irqstatus;
549
550	/* find out which bit of the ALS4000 PCI block produced the interrupt,
551	SPECS_PAGE: 38, 5 */
552	pci_irqstatus = snd_als4k_iobase_readb(chip->alt_port,
553	ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU);
554	if ((pci_irqstatus & ALS4K_IOB_0E_SB_DMA_IRQ)
555	&& (chip->playback_substream)) /* playback */
556	snd_pcm_period_elapsed(chip->playback_substream);
557	if ((pci_irqstatus & ALS4K_IOB_0E_CR1E_IRQ)
558	&& (chip->capture_substream)) /* capturing */
559	snd_pcm_period_elapsed(chip->capture_substream);
560	if ((pci_irqstatus & ALS4K_IOB_0E_MPU_IRQ)
561	&& (chip->rmidi)) /* MPU401 interrupt */
562	snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
563	/* ACK the PCI block IRQ */
564	snd_als4k_iobase_writeb(chip->alt_port,
565	ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU, pci_irqstatus);
566
567	spin_lock(&chip->mixer_lock);
568	/* SPECS_PAGE: 20 */
569	sb_irqstatus = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
570	spin_unlock(&chip->mixer_lock);
571
572	if (sb_irqstatus & SB_IRQTYPE_8BIT)
573	snd_sb_ack_8bit(chip);
574	if (sb_irqstatus & SB_IRQTYPE_16BIT)
575	snd_sb_ack_16bit(chip);
576	if (sb_irqstatus & SB_IRQTYPE_MPUIN)
577	inb(chip->mpu_port);
578	if (sb_irqstatus & ALS4K_IRQTYPE_CR1E_DMA)
579	snd_als4k_iobase_readb(chip->alt_port,
580	ALS4K_IOB_16_ACK_FOR_CR1E);
581
582	/* printk(KERN_INFO "als4000: irq 0x%04x 0x%04x\n",
583	pci_irqstatus, sb_irqstatus); */
584
585	/* only ack the things we actually handled above */
586	return IRQ_RETVAL(
587	(pci_irqstatus & (ALS4K_IOB_0E_SB_DMA_IRQ\|ALS4K_IOB_0E_CR1E_IRQ\|
588	ALS4K_IOB_0E_MPU_IRQ))
589	\|\| (sb_irqstatus & (SB_IRQTYPE_8BIT\|SB_IRQTYPE_16BIT\|
590	SB_IRQTYPE_MPUIN\|ALS4K_IRQTYPE_CR1E_DMA))
591	);
592	}
593
594	/*****************************************************************/
595
596	static struct snd_pcm_hardware snd_als4000_playback =
597	{
598	.info = (SNDRV_PCM_INFO_MMAP \| SNDRV_PCM_INFO_INTERLEAVED \|
599	SNDRV_PCM_INFO_MMAP_VALID),
600	.formats = SNDRV_PCM_FMTBIT_S8 \| SNDRV_PCM_FMTBIT_U8 \|
601	SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_U16_LE, /* formats */
602	.rates = SNDRV_PCM_RATE_CONTINUOUS \| SNDRV_PCM_RATE_8000_48000,
603	.rate_min = 4000,
604	.rate_max = 48000,
605	.channels_min = 1,
606	.channels_max = 2,
607	.buffer_bytes_max = 65536,
608	.period_bytes_min = 64,
609	.period_bytes_max = 65536,
610	.periods_min = 1,
611	.periods_max = 1024,
612	.fifo_size = 0
613	};
614
615	static struct snd_pcm_hardware snd_als4000_capture =
616	{
617	.info = (SNDRV_PCM_INFO_MMAP \| SNDRV_PCM_INFO_INTERLEAVED \|
618	SNDRV_PCM_INFO_MMAP_VALID),
619	.formats = SNDRV_PCM_FMTBIT_S8 \| SNDRV_PCM_FMTBIT_U8 \|
620	SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_U16_LE, /* formats */
621	.rates = SNDRV_PCM_RATE_CONTINUOUS \| SNDRV_PCM_RATE_8000_48000,
622	.rate_min = 4000,
623	.rate_max = 48000,
624	.channels_min = 1,
625	.channels_max = 2,
626	.buffer_bytes_max = 65536,
627	.period_bytes_min = 64,
628	.period_bytes_max = 65536,
629	.periods_min = 1,
630	.periods_max = 1024,
631	.fifo_size = 0
632	};
633
634	/*****************************************************************/
635
636	static int snd_als4000_playback_open(struct snd_pcm_substream *substream)
637	{
638	struct snd_sb *chip = snd_pcm_substream_chip(substream);
639	struct snd_pcm_runtime *runtime = substream->runtime;
640
641	chip->playback_substream = substream;
642	runtime->hw = snd_als4000_playback;
643	return 0;
644	}
645
646	static int snd_als4000_playback_close(struct snd_pcm_substream *substream)
647	{
648	struct snd_sb *chip = snd_pcm_substream_chip(substream);
649
650	chip->playback_substream = NULL;
651	snd_pcm_lib_free_pages(substream);
652	return 0;
653	}
654
655	static int snd_als4000_capture_open(struct snd_pcm_substream *substream)
656	{
657	struct snd_sb *chip = snd_pcm_substream_chip(substream);
658	struct snd_pcm_runtime *runtime = substream->runtime;
659
660	chip->capture_substream = substream;
661	runtime->hw = snd_als4000_capture;
662	return 0;
663	}
664
665	static int snd_als4000_capture_close(struct snd_pcm_substream *substream)
666	{
667	struct snd_sb *chip = snd_pcm_substream_chip(substream);
668
669	chip->capture_substream = NULL;
670	snd_pcm_lib_free_pages(substream);
671	return 0;
672	}
673
674	/******************************************************************/
675
676	static struct snd_pcm_ops snd_als4000_playback_ops = {
677	.open = snd_als4000_playback_open,
678	.close = snd_als4000_playback_close,
679	.ioctl = snd_pcm_lib_ioctl,
680	.hw_params = snd_als4000_hw_params,
681	.hw_free = snd_als4000_hw_free,
682	.prepare = snd_als4000_playback_prepare,
683	.trigger = snd_als4000_playback_trigger,
684	.pointer = snd_als4000_playback_pointer
685	};
686
687	static struct snd_pcm_ops snd_als4000_capture_ops = {
688	.open = snd_als4000_capture_open,
689	.close = snd_als4000_capture_close,
690	.ioctl = snd_pcm_lib_ioctl,
691	.hw_params = snd_als4000_hw_params,
692	.hw_free = snd_als4000_hw_free,
693	.prepare = snd_als4000_capture_prepare,
694	.trigger = snd_als4000_capture_trigger,
695	.pointer = snd_als4000_capture_pointer
696	};
697
698	static int __devinit snd_als4000_pcm(struct snd_sb *chip, int device)
699	{
700	struct snd_pcm *pcm;
701	int err;
702
703	err = snd_pcm_new(chip->card, "ALS4000 DSP", device, 1, 1, &pcm);
704	if (err < 0)
705	return err;
706	pcm->private_data = chip;
707	pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
708	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_als4000_playback_ops);
709	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_als4000_capture_ops);
710
711	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
712	641024, 641024);
713
714	chip->pcm = pcm;
715
716	return 0;
717	}
718
719	/******************************************************************/
720
721	static void snd_als4000_set_addr(unsigned long iobase,
722	unsigned int sb_io,
723	unsigned int mpu_io,
724	unsigned int opl_io,
725	unsigned int game_io)
726	{
727	u32 cfg1 = 0;
728	u32 cfg2 = 0;
729
730	if (mpu_io > 0)
731	cfg2 \|= (mpu_io \| 1) << 16;
732	if (sb_io > 0)
733	cfg2 \|= (sb_io \| 1);
734	if (game_io > 0)
735	cfg1 \|= (game_io \| 1) << 16;
736	if (opl_io > 0)
737	cfg1 \|= (opl_io \| 1);
738	snd_als4k_gcr_write_addr(iobase, ALS4K_GCRA8_LEGACY_CFG1, cfg1);
739	snd_als4k_gcr_write_addr(iobase, ALS4K_GCRA9_LEGACY_CFG2, cfg2);
740	}
741
742	static void snd_als4000_configure(struct snd_sb *chip)
743	{
744	u8 tmp;
745	int i;
746
747	/* do some more configuration */
748	spin_lock_irq(&chip->mixer_lock);
749	tmp = snd_als4_cr_read(chip, ALS4K_CR0_SB_CONFIG);
750	snd_als4_cr_write(chip, ALS4K_CR0_SB_CONFIG,
751	tmp\|ALS4K_CR0_MX80_81_REG_WRITE_ENABLE);
752	/* always select DMA channel 0, since we do not actually use DMA
753	* SPECS_PAGE: 19/20 */
754	snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
755	snd_als4_cr_write(chip, ALS4K_CR0_SB_CONFIG,
756	tmp & ~ALS4K_CR0_MX80_81_REG_WRITE_ENABLE);
757	spin_unlock_irq(&chip->mixer_lock);
758
759	spin_lock_irq(&chip->reg_lock);
760	/* enable interrupts */
761	snd_als4k_gcr_write(chip, ALS4K_GCR8C_MISC_CTRL,
762	ALS4K_GCR8C_IRQ_MASK_CTRL_ENABLE);
763
764	/* SPECS_PAGE: 39 */
765	for (i = ALS4K_GCR91_DMA0_ADDR; i <= ALS4K_GCR96_DMA3_MODE_COUNT; ++i)
766	snd_als4k_gcr_write(chip, i, 0);
767
768	snd_als4k_gcr_write(chip, ALS4K_GCR99_DMA_EMULATION_CTRL,
769	snd_als4k_gcr_read(chip, ALS4K_GCR99_DMA_EMULATION_CTRL));
770	spin_unlock_irq(&chip->reg_lock);
771	}
772
773	#ifdef SUPPORT_JOYSTICK
774	static int __devinit snd_als4000_create_gameport(struct snd_card_als4000 *acard, int dev)
775	{
776	struct gameport *gp;
777	struct resource *r;
778	int io_port;
779
780	if (joystick_port[dev] == 0)
781	return -ENODEV;
782
783	if (joystick_port[dev] == 1) { /* auto-detect */
784	for (io_port = 0x200; io_port <= 0x218; io_port += 8) {
785	r = request_region(io_port, 8, "ALS4000 gameport");
786	if (r)
787	break;
788	}
789	} else {
790	io_port = joystick_port[dev];
791	r = request_region(io_port, 8, "ALS4000 gameport");
792	}
793
794	if (!r) {
795	printk(KERN_WARNING "als4000: cannot reserve joystick ports\n");
796	return -EBUSY;
797	}
798
799	acard->gameport = gp = gameport_allocate_port();
800	if (!gp) {
801	printk(KERN_ERR "als4000: cannot allocate memory for gameport\n");
802	release_and_free_resource(r);
803	return -ENOMEM;
804	}
805
806	gameport_set_name(gp, "ALS4000 Gameport");
807	gameport_set_phys(gp, "pci%s/gameport0", pci_name(acard->pci));
808	gameport_set_dev_parent(gp, &acard->pci->dev);
809	gp->io = io_port;
810	gameport_set_port_data(gp, r);
811
812	/* Enable legacy joystick port */
813	snd_als4000_set_addr(acard->iobase, 0, 0, 0, 1);
814
815	gameport_register_port(acard->gameport);
816
817	return 0;
818	}
819
820	static void snd_als4000_free_gameport(struct snd_card_als4000 *acard)
821	{
822	if (acard->gameport) {
823	struct resource *r = gameport_get_port_data(acard->gameport);
824
825	gameport_unregister_port(acard->gameport);
826	acard->gameport = NULL;
827
828	/* disable joystick */
829	snd_als4000_set_addr(acard->iobase, 0, 0, 0, 0);
830
831	release_and_free_resource(r);
832	}
833	}
834	#else
835	static inline int snd_als4000_create_gameport(struct snd_card_als4000 *acard, int dev) { return -ENOSYS; }
836	static inline void snd_als4000_free_gameport(struct snd_card_als4000 *acard) { }
837	#endif
838
839	static void snd_card_als4000_free( struct snd_card *card )
840	{
841	struct snd_card_als4000 *acard = card->private_data;
842
843	/* make sure that interrupts are disabled */
844	snd_als4k_gcr_write_addr(acard->iobase, ALS4K_GCR8C_MISC_CTRL, 0);
845	/* free resources */
846	snd_als4000_free_gameport(acard);
847	pci_release_regions(acard->pci);
848	pci_disable_device(acard->pci);
849	}
850
851	static int __devinit snd_card_als4000_probe(struct pci_dev *pci,
852	const struct pci_device_id *pci_id)
853	{
854	static int dev;
855	struct snd_card *card;
856	struct snd_card_als4000 *acard;
857	unsigned long iobase;
858	struct snd_sb *chip;
859	struct snd_opl3 *opl3;
860	unsigned short word;
861	int err;
862
863	if (dev >= SNDRV_CARDS)
864	return -ENODEV;
865	if (!enable[dev]) {
866	dev++;
867	return -ENOENT;
868	}
869
870	/* enable PCI device */
871	if ((err = pci_enable_device(pci)) < 0) {
872	return err;
873	}
874	/* check, if we can restrict PCI DMA transfers to 24 bits */
875	if (pci_set_dma_mask(pci, DMA_BIT_MASK(24)) < 0 \|\|
876	pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(24)) < 0) {
877	snd_printk(KERN_ERR "architecture does not support 24bit PCI busmaster DMA\n");
878	pci_disable_device(pci);
879	return -ENXIO;
880	}
881
882	if ((err = pci_request_regions(pci, "ALS4000")) < 0) {
883	pci_disable_device(pci);
884	return err;
885	}
886	iobase = pci_resource_start(pci, 0);
887
888	pci_read_config_word(pci, PCI_COMMAND, &word);
889	pci_write_config_word(pci, PCI_COMMAND, word \| PCI_COMMAND_IO);
890	pci_set_master(pci);
891
892	err = snd_card_create(index[dev], id[dev], THIS_MODULE,
893	sizeof(acard) / private_data: acard */,
894	&card);
895	if (err < 0) {
896	pci_release_regions(pci);
897	pci_disable_device(pci);
898	return err;
899	}
900
901	acard = card->private_data;
902	acard->pci = pci;
903	acard->iobase = iobase;
904	card->private_free = snd_card_als4000_free;
905
906	/* disable all legacy ISA stuff */
907	snd_als4000_set_addr(acard->iobase, 0, 0, 0, 0);
908
909	if ((err = snd_sbdsp_create(card,
910	iobase + ALS4K_IOB_10_ADLIB_ADDR0,
911	pci->irq,
912	/* internally registered as IRQF_SHARED in case of ALS4000 SB */
913	snd_als4000_interrupt,
914	-1,
915	-1,
916	SB_HW_ALS4000,
917	&chip)) < 0) {
918	goto out_err;
919	}
920	acard->chip = chip;
921
922	chip->pci = pci;
923	chip->alt_port = iobase;
924	snd_card_set_dev(card, &pci->dev);
925
926	snd_als4000_configure(chip);
927
928	strcpy(card->driver, "ALS4000");
929	strcpy(card->shortname, "Avance Logic ALS4000");
930	sprintf(card->longname, "%s at 0x%lx, irq %i",
931	card->shortname, chip->alt_port, chip->irq);
932
933	if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_ALS4000,
934	iobase + ALS4K_IOB_30_MIDI_DATA,
935	MPU401_INFO_INTEGRATED,
936	pci->irq, 0, &chip->rmidi)) < 0) {
937	printk(KERN_ERR "als4000: no MPU-401 device at 0x%lx?\n",
938	iobase + ALS4K_IOB_30_MIDI_DATA);
939	goto out_err;
940	}
941	/* FIXME: ALS4000 has interesting MPU401 configuration features
942	* at ALS4K_CR1A_MPU401_UART_MODE_CONTROL
943	* (pass-thru / UART switching, fast MIDI clock, etc.),
944	* however there doesn't seem to be an ALSA API for this...
945	* SPECS_PAGE: 21 */
946
947	if ((err = snd_als4000_pcm(chip, 0)) < 0) {
948	goto out_err;
949	}
950	if ((err = snd_sbmixer_new(chip)) < 0) {
951	goto out_err;
952	}
953
954	if (snd_opl3_create(card,
955	iobase + ALS4K_IOB_10_ADLIB_ADDR0,
956	iobase + ALS4K_IOB_12_ADLIB_ADDR2,
957	OPL3_HW_AUTO, 1, &opl3) < 0) {
958	printk(KERN_ERR "als4000: no OPL device at 0x%lx-0x%lx?\n",
959	iobase + ALS4K_IOB_10_ADLIB_ADDR0,
960	iobase + ALS4K_IOB_12_ADLIB_ADDR2);
961	} else {
962	if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
963	goto out_err;
964	}
965	}
966
967	snd_als4000_create_gameport(acard, dev);
968
969	if ((err = snd_card_register(card)) < 0) {
970	goto out_err;
971	}
972	pci_set_drvdata(pci, card);
973	dev++;
974	err = 0;
975	goto out;
976
977	out_err:
978	snd_card_free(card);
979
980	out:
981	return err;
982	}
983
984	static void __devexit snd_card_als4000_remove(struct pci_dev *pci)
985	{
986	snd_card_free(pci_get_drvdata(pci));
987	pci_set_drvdata(pci, NULL);
988	}
989
990	#ifdef CONFIG_PM
991	static int snd_als4000_suspend(struct pci_dev *pci, pm_message_t state)
992	{
993	struct snd_card *card = pci_get_drvdata(pci);
994	struct snd_card_als4000 *acard = card->private_data;
995	struct snd_sb *chip = acard->chip;
996
997	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
998
999	snd_pcm_suspend_all(chip->pcm);
1000	snd_sbmixer_suspend(chip);
1001
1002	pci_disable_device(pci);
1003	pci_save_state(pci);
1004	pci_set_power_state(pci, pci_choose_state(pci, state));
1005	return 0;
1006	}
1007
1008	static int snd_als4000_resume(struct pci_dev *pci)
1009	{
1010	struct snd_card *card = pci_get_drvdata(pci);
1011	struct snd_card_als4000 *acard = card->private_data;
1012	struct snd_sb *chip = acard->chip;
1013
1014	pci_set_power_state(pci, PCI_D0);
1015	pci_restore_state(pci);
1016	if (pci_enable_device(pci) < 0) {
1017	printk(KERN_ERR "als4000: pci_enable_device failed, "
1018	"disabling device\n");
1019	snd_card_disconnect(card);
1020	return -EIO;
1021	}
1022	pci_set_master(pci);
1023
1024	snd_als4000_configure(chip);
1025	snd_sbdsp_reset(chip);
1026	snd_sbmixer_resume(chip);
1027
1028	#ifdef SUPPORT_JOYSTICK
1029	if (acard->gameport)
1030	snd_als4000_set_addr(acard->iobase, 0, 0, 0, 1);
1031	#endif
1032
1033	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1034	return 0;
1035	}
1036	#endif /* CONFIG_PM */
1037
1038
1039	static struct pci_driver driver = {
1040	.name = "ALS4000",
1041	.id_table = snd_als4000_ids,
1042	.probe = snd_card_als4000_probe,
1043	.remove = __devexit_p(snd_card_als4000_remove),
1044	#ifdef CONFIG_PM
1045	.suspend = snd_als4000_suspend,
1046	.resume = snd_als4000_resume,
1047	#endif
1048	};
1049
1050	static int __init alsa_card_als4000_init(void)
1051	{
1052	return pci_register_driver(&driver);
1053	}
1054
1055	static void __exit alsa_card_als4000_exit(void)
1056	{
1057	pci_unregister_driver(&driver);
1058	}
1059
1060	module_init(alsa_card_als4000_init)
1061	module_exit(alsa_card_als4000_exit)

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