2 * Driver for NeoMagic 256AV and 256ZX chipsets.
3 * Copyright (c) 2000 by Takashi Iwai <tiwai@suse.de>
5 * Based on nm256_audio.c OSS driver in linux kernel.
6 * The original author of OSS nm256 driver wishes to remain anonymous,
7 * so I just put my acknoledgment to him/her here.
8 * The original author's web page is found at
9 * http://www.uglx.org/sony.html
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 #include <sound/driver.h>
29 #include <linux/delay.h>
30 #include <linux/interrupt.h>
31 #include <linux/init.h>
32 #include <linux/pci.h>
33 #include <linux/slab.h>
34 #include <linux/moduleparam.h>
35 #include <sound/core.h>
36 #include <sound/info.h>
37 #include <sound/control.h>
38 #include <sound/pcm.h>
39 #include <sound/ac97_codec.h>
40 #include <sound/initval.h>
42 #define CARD_NAME "NeoMagic 256AV/ZX"
43 #define DRIVER_NAME "NM256"
45 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
46 MODULE_DESCRIPTION("NeoMagic NM256AV/ZX");
47 MODULE_LICENSE("GPL");
48 MODULE_SUPPORTED_DEVICE("{{NeoMagic,NM256AV},"
49 "{NeoMagic,NM256ZX}}");
52 * some compile conditions.
55 static int index = SNDRV_DEFAULT_IDX1; /* Index */
56 static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
57 static int playback_bufsize = 16;
58 static int capture_bufsize = 16;
59 static int force_ac97; /* disabled as default */
60 static int buffer_top; /* not specified */
61 static int use_cache; /* disabled */
62 static int vaio_hack; /* disabled */
63 static int reset_workaround;
64 static int reset_workaround_2;
66 module_param(index, int, 0444);
67 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
68 module_param(id, charp, 0444);
69 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
70 module_param(playback_bufsize, int, 0444);
71 MODULE_PARM_DESC(playback_bufsize, "DAC frame size in kB for " CARD_NAME " soundcard.");
72 module_param(capture_bufsize, int, 0444);
73 MODULE_PARM_DESC(capture_bufsize, "ADC frame size in kB for " CARD_NAME " soundcard.");
74 module_param(force_ac97, bool, 0444);
75 MODULE_PARM_DESC(force_ac97, "Force to use AC97 codec for " CARD_NAME " soundcard.");
76 module_param(buffer_top, int, 0444);
77 MODULE_PARM_DESC(buffer_top, "Set the top address of audio buffer for " CARD_NAME " soundcard.");
78 module_param(use_cache, bool, 0444);
79 MODULE_PARM_DESC(use_cache, "Enable the cache for coefficient table access.");
80 module_param(vaio_hack, bool, 0444);
81 MODULE_PARM_DESC(vaio_hack, "Enable workaround for Sony VAIO notebooks.");
82 module_param(reset_workaround, bool, 0444);
83 MODULE_PARM_DESC(reset_workaround, "Enable AC97 RESET workaround for some laptops.");
84 module_param(reset_workaround_2, bool, 0444);
85 MODULE_PARM_DESC(reset_workaround_2, "Enable extended AC97 RESET workaround for some other laptops.");
87 /* just for backward compatibility */
89 module_param(enable, bool, 0444);
97 /* The BIOS signature. */
98 #define NM_SIGNATURE 0x4e4d0000
100 #define NM_SIG_MASK 0xffff0000
102 /* Size of the second memory area. */
103 #define NM_PORT2_SIZE 4096
105 /* The base offset of the mixer in the second memory area. */
106 #define NM_MIXER_OFFSET 0x600
108 /* The maximum size of a coefficient entry. */
109 #define NM_MAX_PLAYBACK_COEF_SIZE 0x5000
110 #define NM_MAX_RECORD_COEF_SIZE 0x1260
112 /* The interrupt register. */
113 #define NM_INT_REG 0xa04
115 #define NM_PLAYBACK_INT 0x40
116 #define NM_RECORD_INT 0x100
117 #define NM_MISC_INT_1 0x4000
118 #define NM_MISC_INT_2 0x1
119 #define NM_ACK_INT(chip, X) snd_nm256_writew(chip, NM_INT_REG, (X) << 1)
121 /* The AV's "mixer ready" status bit and location. */
122 #define NM_MIXER_STATUS_OFFSET 0xa04
123 #define NM_MIXER_READY_MASK 0x0800
124 #define NM_MIXER_PRESENCE 0xa06
125 #define NM_PRESENCE_MASK 0x0050
126 #define NM_PRESENCE_VALUE 0x0040
129 * For the ZX. It uses the same interrupt register, but it holds 32
130 * bits instead of 16.
132 #define NM2_PLAYBACK_INT 0x10000
133 #define NM2_RECORD_INT 0x80000
134 #define NM2_MISC_INT_1 0x8
135 #define NM2_MISC_INT_2 0x2
136 #define NM2_ACK_INT(chip, X) snd_nm256_writel(chip, NM_INT_REG, (X))
138 /* The ZX's "mixer ready" status bit and location. */
139 #define NM2_MIXER_STATUS_OFFSET 0xa06
140 #define NM2_MIXER_READY_MASK 0x0800
142 /* The playback registers start from here. */
143 #define NM_PLAYBACK_REG_OFFSET 0x0
144 /* The record registers start from here. */
145 #define NM_RECORD_REG_OFFSET 0x200
147 /* The rate register is located 2 bytes from the start of the register area. */
148 #define NM_RATE_REG_OFFSET 2
150 /* Mono/stereo flag, number of bits on playback, and rate mask. */
151 #define NM_RATE_STEREO 1
152 #define NM_RATE_BITS_16 2
153 #define NM_RATE_MASK 0xf0
155 /* Playback enable register. */
156 #define NM_PLAYBACK_ENABLE_REG (NM_PLAYBACK_REG_OFFSET + 0x1)
157 #define NM_PLAYBACK_ENABLE_FLAG 1
158 #define NM_PLAYBACK_ONESHOT 2
159 #define NM_PLAYBACK_FREERUN 4
161 /* Mutes the audio output. */
162 #define NM_AUDIO_MUTE_REG (NM_PLAYBACK_REG_OFFSET + 0x18)
163 #define NM_AUDIO_MUTE_LEFT 0x8000
164 #define NM_AUDIO_MUTE_RIGHT 0x0080
166 /* Recording enable register. */
167 #define NM_RECORD_ENABLE_REG (NM_RECORD_REG_OFFSET + 0)
168 #define NM_RECORD_ENABLE_FLAG 1
169 #define NM_RECORD_FREERUN 2
171 /* coefficient buffer pointer */
172 #define NM_COEFF_START_OFFSET 0x1c
173 #define NM_COEFF_END_OFFSET 0x20
175 /* DMA buffer offsets */
176 #define NM_RBUFFER_START (NM_RECORD_REG_OFFSET + 0x4)
177 #define NM_RBUFFER_END (NM_RECORD_REG_OFFSET + 0x10)
178 #define NM_RBUFFER_WMARK (NM_RECORD_REG_OFFSET + 0xc)
179 #define NM_RBUFFER_CURRP (NM_RECORD_REG_OFFSET + 0x8)
181 #define NM_PBUFFER_START (NM_PLAYBACK_REG_OFFSET + 0x4)
182 #define NM_PBUFFER_END (NM_PLAYBACK_REG_OFFSET + 0x14)
183 #define NM_PBUFFER_WMARK (NM_PLAYBACK_REG_OFFSET + 0xc)
184 #define NM_PBUFFER_CURRP (NM_PLAYBACK_REG_OFFSET + 0x8)
190 typedef struct snd_nm256 nm256_t;
191 typedef struct snd_nm256_stream nm256_stream_t;
193 struct snd_nm256_stream {
196 snd_pcm_substream_t *substream;
200 u32 buf; /* offset from chip->buffer */
201 int bufsize; /* buffer size in bytes */
202 void __iomem *bufptr; /* mapped pointer */
203 unsigned long bufptr_addr; /* physical address of the mapped pointer */
205 int dma_size; /* buffer size of the substream in bytes */
206 int period_size; /* period size in bytes */
207 int periods; /* # of periods */
208 int shift; /* bit shifts */
209 int cur_period; /* current period # */
217 void __iomem *cport; /* control port */
218 struct resource *res_cport; /* its resource */
219 unsigned long cport_addr; /* physical address */
221 void __iomem *buffer; /* buffer */
222 struct resource *res_buffer; /* its resource */
223 unsigned long buffer_addr; /* buffer phyiscal address */
225 u32 buffer_start; /* start offset from pci resource 0 */
226 u32 buffer_end; /* end offset */
227 u32 buffer_size; /* total buffer size */
229 u32 all_coeff_buf; /* coefficient buffer */
230 u32 coeff_buf[2]; /* coefficient buffer for each stream */
232 unsigned int coeffs_current: 1; /* coeff. table is loaded? */
233 unsigned int use_cache: 1; /* use one big coef. table */
234 unsigned int reset_workaround: 1; /* Workaround for some laptops to avoid freeze */
235 unsigned int reset_workaround_2: 1; /* Extended workaround for some other laptops to avoid freeze */
237 int mixer_base; /* register offset of ac97 mixer */
238 int mixer_status_offset; /* offset of mixer status reg. */
239 int mixer_status_mask; /* bit mask to test the mixer status */
243 irqreturn_t (*interrupt)(int, void *, struct pt_regs *);
244 int badintrcount; /* counter to check bogus interrupts */
245 struct semaphore irq_mutex;
247 nm256_stream_t streams[2];
261 * include coefficient table
263 #include "nm256_coef.c"
269 static struct pci_device_id snd_nm256_ids[] = {
270 {PCI_VENDOR_ID_NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
271 {PCI_VENDOR_ID_NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
272 {PCI_VENDOR_ID_NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
276 MODULE_DEVICE_TABLE(pci, snd_nm256_ids);
284 snd_nm256_readb(nm256_t *chip, int offset)
286 return readb(chip->cport + offset);
290 snd_nm256_readw(nm256_t *chip, int offset)
292 return readw(chip->cport + offset);
296 snd_nm256_readl(nm256_t *chip, int offset)
298 return readl(chip->cport + offset);
302 snd_nm256_writeb(nm256_t *chip, int offset, u8 val)
304 writeb(val, chip->cport + offset);
308 snd_nm256_writew(nm256_t *chip, int offset, u16 val)
310 writew(val, chip->cport + offset);
314 snd_nm256_writel(nm256_t *chip, int offset, u32 val)
316 writel(val, chip->cport + offset);
320 snd_nm256_write_buffer(nm256_t *chip, void *src, int offset, int size)
322 offset -= chip->buffer_start;
323 #ifdef CONFIG_SND_DEBUG
324 if (offset < 0 || offset >= chip->buffer_size) {
325 snd_printk(KERN_ERR "write_buffer invalid offset = %d size = %d\n", offset, size);
329 memcpy_toio(chip->buffer + offset, src, size);
333 * coefficient handlers -- what a magic!
337 snd_nm256_get_start_offset(int which)
341 offset += coefficient_sizes[which];
346 snd_nm256_load_one_coefficient(nm256_t *chip, int stream, u32 port, int which)
348 u32 coeff_buf = chip->coeff_buf[stream];
349 u16 offset = snd_nm256_get_start_offset(which);
350 u16 size = coefficient_sizes[which];
352 snd_nm256_write_buffer(chip, coefficients + offset, coeff_buf, size);
353 snd_nm256_writel(chip, port, coeff_buf);
354 /* ??? Record seems to behave differently than playback. */
355 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
357 snd_nm256_writel(chip, port + 4, coeff_buf + size);
361 snd_nm256_load_coefficient(nm256_t *chip, int stream, int number)
363 /* The enable register for the specified engine. */
364 u32 poffset = (stream == SNDRV_PCM_STREAM_CAPTURE ? NM_RECORD_ENABLE_REG : NM_PLAYBACK_ENABLE_REG);
365 u32 addr = NM_COEFF_START_OFFSET;
367 addr += (stream == SNDRV_PCM_STREAM_CAPTURE ? NM_RECORD_REG_OFFSET : NM_PLAYBACK_REG_OFFSET);
369 if (snd_nm256_readb(chip, poffset) & 1) {
370 snd_printd("NM256: Engine was enabled while loading coefficients!\n");
374 /* The recording engine uses coefficient values 8-15. */
376 if (stream == SNDRV_PCM_STREAM_CAPTURE)
379 if (! chip->use_cache) {
380 snd_nm256_load_one_coefficient(chip, stream, addr, number);
383 if (! chip->coeffs_current) {
384 snd_nm256_write_buffer(chip, coefficients, chip->all_coeff_buf,
385 NM_TOTAL_COEFF_COUNT * 4);
386 chip->coeffs_current = 1;
388 u32 base = chip->all_coeff_buf;
389 u32 offset = snd_nm256_get_start_offset(number);
390 u32 end_offset = offset + coefficient_sizes[number];
391 snd_nm256_writel(chip, addr, base + offset);
392 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
394 snd_nm256_writel(chip, addr + 4, base + end_offset);
399 /* The actual rates supported by the card. */
400 static unsigned int samplerates[8] = {
401 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000,
403 static snd_pcm_hw_constraint_list_t constraints_rates = {
404 .count = ARRAY_SIZE(samplerates),
410 * return the index of the target rate
413 snd_nm256_fixed_rate(unsigned int rate)
416 for (i = 0; i < ARRAY_SIZE(samplerates); i++) {
417 if (rate == samplerates[i])
425 * set sample rate and format
428 snd_nm256_set_format(nm256_t *chip, nm256_stream_t *s, snd_pcm_substream_t *substream)
430 snd_pcm_runtime_t *runtime = substream->runtime;
431 int rate_index = snd_nm256_fixed_rate(runtime->rate);
432 unsigned char ratebits = (rate_index << 4) & NM_RATE_MASK;
435 if (snd_pcm_format_width(runtime->format) == 16) {
436 ratebits |= NM_RATE_BITS_16;
439 if (runtime->channels > 1) {
440 ratebits |= NM_RATE_STEREO;
444 runtime->rate = samplerates[rate_index];
446 switch (substream->stream) {
447 case SNDRV_PCM_STREAM_PLAYBACK:
448 snd_nm256_load_coefficient(chip, 0, rate_index); /* 0 = playback */
449 snd_nm256_writeb(chip,
450 NM_PLAYBACK_REG_OFFSET + NM_RATE_REG_OFFSET,
453 case SNDRV_PCM_STREAM_CAPTURE:
454 snd_nm256_load_coefficient(chip, 1, rate_index); /* 1 = record */
455 snd_nm256_writeb(chip,
456 NM_RECORD_REG_OFFSET + NM_RATE_REG_OFFSET,
462 /* acquire interrupt */
463 static int snd_nm256_acquire_irq(nm256_t *chip)
465 down(&chip->irq_mutex);
467 if (request_irq(chip->pci->irq, chip->interrupt, SA_INTERRUPT|SA_SHIRQ,
468 chip->card->driver, (void*)chip)) {
469 snd_printk(KERN_ERR "unable to grab IRQ %d\n", chip->pci->irq);
470 up(&chip->irq_mutex);
473 chip->irq = chip->pci->irq;
476 up(&chip->irq_mutex);
480 /* release interrupt */
481 static void snd_nm256_release_irq(nm256_t *chip)
483 down(&chip->irq_mutex);
484 if (chip->irq_acks > 0)
486 if (chip->irq_acks == 0 && chip->irq >= 0) {
487 free_irq(chip->irq, (void*)chip);
490 up(&chip->irq_mutex);
497 /* update the watermark (current period) */
498 static void snd_nm256_pcm_mark(nm256_t *chip, nm256_stream_t *s, int reg)
501 s->cur_period %= s->periods;
502 snd_nm256_writel(chip, reg, s->buf + s->cur_period * s->period_size);
505 #define snd_nm256_playback_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_PBUFFER_WMARK)
506 #define snd_nm256_capture_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_RBUFFER_WMARK)
509 snd_nm256_playback_start(nm256_t *chip, nm256_stream_t *s, snd_pcm_substream_t *substream)
511 /* program buffer pointers */
512 snd_nm256_writel(chip, NM_PBUFFER_START, s->buf);
513 snd_nm256_writel(chip, NM_PBUFFER_END, s->buf + s->dma_size - (1 << s->shift));
514 snd_nm256_writel(chip, NM_PBUFFER_CURRP, s->buf);
515 snd_nm256_playback_mark(chip, s);
517 /* Enable playback engine and interrupts. */
518 snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG,
519 NM_PLAYBACK_ENABLE_FLAG | NM_PLAYBACK_FREERUN);
520 /* Enable both channels. */
521 snd_nm256_writew(chip, NM_AUDIO_MUTE_REG, 0x0);
525 snd_nm256_capture_start(nm256_t *chip, nm256_stream_t *s, snd_pcm_substream_t *substream)
527 /* program buffer pointers */
528 snd_nm256_writel(chip, NM_RBUFFER_START, s->buf);
529 snd_nm256_writel(chip, NM_RBUFFER_END, s->buf + s->dma_size);
530 snd_nm256_writel(chip, NM_RBUFFER_CURRP, s->buf);
531 snd_nm256_capture_mark(chip, s);
533 /* Enable playback engine and interrupts. */
534 snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG,
535 NM_RECORD_ENABLE_FLAG | NM_RECORD_FREERUN);
538 /* Stop the play engine. */
540 snd_nm256_playback_stop(nm256_t *chip)
542 /* Shut off sound from both channels. */
543 snd_nm256_writew(chip, NM_AUDIO_MUTE_REG,
544 NM_AUDIO_MUTE_LEFT | NM_AUDIO_MUTE_RIGHT);
545 /* Disable play engine. */
546 snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG, 0);
550 snd_nm256_capture_stop(nm256_t *chip)
552 /* Disable recording engine. */
553 snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG, 0);
557 snd_nm256_playback_trigger(snd_pcm_substream_t *substream, int cmd)
559 nm256_t *chip = snd_pcm_substream_chip(substream);
560 nm256_stream_t *s = (nm256_stream_t*)substream->runtime->private_data;
563 snd_assert(s != NULL, return -ENXIO);
565 spin_lock(&chip->reg_lock);
567 case SNDRV_PCM_TRIGGER_RESUME:
570 case SNDRV_PCM_TRIGGER_START:
572 snd_nm256_playback_start(chip, s, substream);
576 case SNDRV_PCM_TRIGGER_SUSPEND:
579 case SNDRV_PCM_TRIGGER_STOP:
581 snd_nm256_playback_stop(chip);
589 spin_unlock(&chip->reg_lock);
594 snd_nm256_capture_trigger(snd_pcm_substream_t *substream, int cmd)
596 nm256_t *chip = snd_pcm_substream_chip(substream);
597 nm256_stream_t *s = (nm256_stream_t*)substream->runtime->private_data;
600 snd_assert(s != NULL, return -ENXIO);
602 spin_lock(&chip->reg_lock);
604 case SNDRV_PCM_TRIGGER_START:
605 case SNDRV_PCM_TRIGGER_RESUME:
607 snd_nm256_capture_start(chip, s, substream);
611 case SNDRV_PCM_TRIGGER_STOP:
612 case SNDRV_PCM_TRIGGER_SUSPEND:
614 snd_nm256_capture_stop(chip);
622 spin_unlock(&chip->reg_lock);
628 * prepare playback/capture channel
630 static int snd_nm256_pcm_prepare(snd_pcm_substream_t *substream)
632 nm256_t *chip = snd_pcm_substream_chip(substream);
633 snd_pcm_runtime_t *runtime = substream->runtime;
634 nm256_stream_t *s = (nm256_stream_t*)runtime->private_data;
636 snd_assert(s, return -ENXIO);
637 s->dma_size = frames_to_bytes(runtime, substream->runtime->buffer_size);
638 s->period_size = frames_to_bytes(runtime, substream->runtime->period_size);
639 s->periods = substream->runtime->periods;
642 spin_lock_irq(&chip->reg_lock);
644 snd_nm256_set_format(chip, s, substream);
645 spin_unlock_irq(&chip->reg_lock);
652 * get the current pointer
654 static snd_pcm_uframes_t
655 snd_nm256_playback_pointer(snd_pcm_substream_t * substream)
657 nm256_t *chip = snd_pcm_substream_chip(substream);
658 nm256_stream_t *s = (nm256_stream_t*)substream->runtime->private_data;
661 snd_assert(s, return 0);
662 curp = snd_nm256_readl(chip, NM_PBUFFER_CURRP) - (unsigned long)s->buf;
664 return bytes_to_frames(substream->runtime, curp);
667 static snd_pcm_uframes_t
668 snd_nm256_capture_pointer(snd_pcm_substream_t * substream)
670 nm256_t *chip = snd_pcm_substream_chip(substream);
671 nm256_stream_t *s = (nm256_stream_t*)substream->runtime->private_data;
674 snd_assert(s != NULL, return 0);
675 curp = snd_nm256_readl(chip, NM_RBUFFER_CURRP) - (unsigned long)s->buf;
677 return bytes_to_frames(substream->runtime, curp);
680 /* Remapped I/O space can be accessible as pointer on i386 */
681 /* This might be changed in the future */
684 * silence / copy for playback
687 snd_nm256_playback_silence(snd_pcm_substream_t *substream,
688 int channel, /* not used (interleaved data) */
689 snd_pcm_uframes_t pos,
690 snd_pcm_uframes_t count)
692 snd_pcm_runtime_t *runtime = substream->runtime;
693 nm256_stream_t *s = (nm256_stream_t*)runtime->private_data;
694 count = frames_to_bytes(runtime, count);
695 pos = frames_to_bytes(runtime, pos);
696 memset_io(s->bufptr + pos, 0, count);
701 snd_nm256_playback_copy(snd_pcm_substream_t *substream,
702 int channel, /* not used (interleaved data) */
703 snd_pcm_uframes_t pos,
705 snd_pcm_uframes_t count)
707 snd_pcm_runtime_t *runtime = substream->runtime;
708 nm256_stream_t *s = (nm256_stream_t*)runtime->private_data;
709 count = frames_to_bytes(runtime, count);
710 pos = frames_to_bytes(runtime, pos);
711 if (copy_from_user_toio(s->bufptr + pos, src, count))
720 snd_nm256_capture_copy(snd_pcm_substream_t *substream,
721 int channel, /* not used (interleaved data) */
722 snd_pcm_uframes_t pos,
724 snd_pcm_uframes_t count)
726 snd_pcm_runtime_t *runtime = substream->runtime;
727 nm256_stream_t *s = (nm256_stream_t*)runtime->private_data;
728 count = frames_to_bytes(runtime, count);
729 pos = frames_to_bytes(runtime, pos);
730 if (copy_to_user_fromio(dst, s->bufptr + pos, count))
735 #endif /* !__i386__ */
739 * update playback/capture watermarks
744 snd_nm256_playback_update(nm256_t *chip)
748 s = &chip->streams[SNDRV_PCM_STREAM_PLAYBACK];
749 if (s->running && s->substream) {
750 spin_unlock(&chip->reg_lock);
751 snd_pcm_period_elapsed(s->substream);
752 spin_lock(&chip->reg_lock);
753 snd_nm256_playback_mark(chip, s);
759 snd_nm256_capture_update(nm256_t *chip)
763 s = &chip->streams[SNDRV_PCM_STREAM_CAPTURE];
764 if (s->running && s->substream) {
765 spin_unlock(&chip->reg_lock);
766 snd_pcm_period_elapsed(s->substream);
767 spin_lock(&chip->reg_lock);
768 snd_nm256_capture_mark(chip, s);
775 static snd_pcm_hardware_t snd_nm256_playback =
777 .info = SNDRV_PCM_INFO_MMAP_IOMEM |SNDRV_PCM_INFO_MMAP_VALID |
778 SNDRV_PCM_INFO_INTERLEAVED |
779 /*SNDRV_PCM_INFO_PAUSE |*/
780 SNDRV_PCM_INFO_RESUME,
781 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
782 .rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000,
789 .buffer_bytes_max = 128 * 1024,
790 .period_bytes_min = 256,
791 .period_bytes_max = 128 * 1024,
794 static snd_pcm_hardware_t snd_nm256_capture =
796 .info = SNDRV_PCM_INFO_MMAP_IOMEM | SNDRV_PCM_INFO_MMAP_VALID |
797 SNDRV_PCM_INFO_INTERLEAVED |
798 /*SNDRV_PCM_INFO_PAUSE |*/
799 SNDRV_PCM_INFO_RESUME,
800 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
801 .rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000,
808 .buffer_bytes_max = 128 * 1024,
809 .period_bytes_min = 256,
810 .period_bytes_max = 128 * 1024,
814 /* set dma transfer size */
815 static int snd_nm256_pcm_hw_params(snd_pcm_substream_t *substream, snd_pcm_hw_params_t *hw_params)
817 /* area and addr are already set and unchanged */
818 substream->runtime->dma_bytes = params_buffer_bytes(hw_params);
825 static void snd_nm256_setup_stream(nm256_t *chip, nm256_stream_t *s,
826 snd_pcm_substream_t *substream,
827 snd_pcm_hardware_t *hw_ptr)
829 snd_pcm_runtime_t *runtime = substream->runtime;
832 runtime->hw = *hw_ptr;
833 runtime->hw.buffer_bytes_max = s->bufsize;
834 runtime->hw.period_bytes_max = s->bufsize / 2;
835 runtime->dma_area = (void __force *) s->bufptr;
836 runtime->dma_addr = s->bufptr_addr;
837 runtime->dma_bytes = s->bufsize;
838 runtime->private_data = s;
839 s->substream = substream;
841 snd_pcm_set_sync(substream);
842 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
847 snd_nm256_playback_open(snd_pcm_substream_t *substream)
849 nm256_t *chip = snd_pcm_substream_chip(substream);
851 if (snd_nm256_acquire_irq(chip) < 0)
853 snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_PLAYBACK],
854 substream, &snd_nm256_playback);
859 snd_nm256_capture_open(snd_pcm_substream_t *substream)
861 nm256_t *chip = snd_pcm_substream_chip(substream);
863 if (snd_nm256_acquire_irq(chip) < 0)
865 snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_CAPTURE],
866 substream, &snd_nm256_capture);
871 * close - we don't have to do special..
874 snd_nm256_playback_close(snd_pcm_substream_t *substream)
876 nm256_t *chip = snd_pcm_substream_chip(substream);
878 snd_nm256_release_irq(chip);
884 snd_nm256_capture_close(snd_pcm_substream_t *substream)
886 nm256_t *chip = snd_pcm_substream_chip(substream);
888 snd_nm256_release_irq(chip);
893 * create a pcm instance
895 static snd_pcm_ops_t snd_nm256_playback_ops = {
896 .open = snd_nm256_playback_open,
897 .close = snd_nm256_playback_close,
898 .ioctl = snd_pcm_lib_ioctl,
899 .hw_params = snd_nm256_pcm_hw_params,
900 .prepare = snd_nm256_pcm_prepare,
901 .trigger = snd_nm256_playback_trigger,
902 .pointer = snd_nm256_playback_pointer,
904 .copy = snd_nm256_playback_copy,
905 .silence = snd_nm256_playback_silence,
907 .mmap = snd_pcm_lib_mmap_iomem,
910 static snd_pcm_ops_t snd_nm256_capture_ops = {
911 .open = snd_nm256_capture_open,
912 .close = snd_nm256_capture_close,
913 .ioctl = snd_pcm_lib_ioctl,
914 .hw_params = snd_nm256_pcm_hw_params,
915 .prepare = snd_nm256_pcm_prepare,
916 .trigger = snd_nm256_capture_trigger,
917 .pointer = snd_nm256_capture_pointer,
919 .copy = snd_nm256_capture_copy,
921 .mmap = snd_pcm_lib_mmap_iomem,
925 snd_nm256_pcm(nm256_t *chip, int device)
930 for (i = 0; i < 2; i++) {
931 nm256_stream_t *s = &chip->streams[i];
932 s->bufptr = chip->buffer + (s->buf - chip->buffer_start);
933 s->bufptr_addr = chip->buffer_addr + (s->buf - chip->buffer_start);
936 err = snd_pcm_new(chip->card, chip->card->driver, device,
941 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_nm256_playback_ops);
942 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_nm256_capture_ops);
944 pcm->private_data = chip;
953 * Initialize the hardware.
956 snd_nm256_init_chip(nm256_t *chip)
958 /* Reset everything. */
959 snd_nm256_writeb(chip, 0x0, 0x11);
960 snd_nm256_writew(chip, 0x214, 0);
962 //snd_nm256_playback_stop(chip);
963 //snd_nm256_capture_stop(chip);
968 snd_nm256_intr_check(nm256_t *chip)
970 if (chip->badintrcount++ > 1000) {
972 * I'm not sure if the best thing is to stop the card from
973 * playing or just release the interrupt (after all, we're in
974 * a bad situation, so doing fancy stuff may not be such a good
977 * I worry about the card engine continuing to play noise
978 * over and over, however--that could become a very
979 * obnoxious problem. And we know that when this usually
980 * happens things are fairly safe, it just means the user's
981 * inserted a PCMCIA card and someone's spamming us with IRQ 9s.
983 if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running)
984 snd_nm256_playback_stop(chip);
985 if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running)
986 snd_nm256_capture_stop(chip);
987 chip->badintrcount = 0;
994 * Handle a potential interrupt for the device referred to by DEV_ID.
996 * I don't like the cut-n-paste job here either between the two routines,
997 * but there are sufficient differences between the two interrupt handlers
998 * that parameterizing it isn't all that great either. (Could use a macro,
999 * I suppose...yucky bleah.)
1003 snd_nm256_interrupt(int irq, void *dev_id, struct pt_regs *dummy)
1005 nm256_t *chip = dev_id;
1009 status = snd_nm256_readw(chip, NM_INT_REG);
1013 return snd_nm256_intr_check(chip);
1015 chip->badintrcount = 0;
1017 /* Rather boring; check for individual interrupts and process them. */
1019 spin_lock(&chip->reg_lock);
1020 if (status & NM_PLAYBACK_INT) {
1021 status &= ~NM_PLAYBACK_INT;
1022 NM_ACK_INT(chip, NM_PLAYBACK_INT);
1023 snd_nm256_playback_update(chip);
1026 if (status & NM_RECORD_INT) {
1027 status &= ~NM_RECORD_INT;
1028 NM_ACK_INT(chip, NM_RECORD_INT);
1029 snd_nm256_capture_update(chip);
1032 if (status & NM_MISC_INT_1) {
1033 status &= ~NM_MISC_INT_1;
1034 NM_ACK_INT(chip, NM_MISC_INT_1);
1035 snd_printd("NM256: Got misc interrupt #1\n");
1036 snd_nm256_writew(chip, NM_INT_REG, 0x8000);
1037 cbyte = snd_nm256_readb(chip, 0x400);
1038 snd_nm256_writeb(chip, 0x400, cbyte | 2);
1041 if (status & NM_MISC_INT_2) {
1042 status &= ~NM_MISC_INT_2;
1043 NM_ACK_INT(chip, NM_MISC_INT_2);
1044 snd_printd("NM256: Got misc interrupt #2\n");
1045 cbyte = snd_nm256_readb(chip, 0x400);
1046 snd_nm256_writeb(chip, 0x400, cbyte & ~2);
1049 /* Unknown interrupt. */
1051 snd_printd("NM256: Fire in the hole! Unknown status 0x%x\n",
1054 NM_ACK_INT(chip, status);
1057 spin_unlock(&chip->reg_lock);
1062 * Handle a potential interrupt for the device referred to by DEV_ID.
1063 * This handler is for the 256ZX, and is very similar to the non-ZX
1068 snd_nm256_interrupt_zx(int irq, void *dev_id, struct pt_regs *dummy)
1070 nm256_t *chip = dev_id;
1074 status = snd_nm256_readl(chip, NM_INT_REG);
1078 return snd_nm256_intr_check(chip);
1080 chip->badintrcount = 0;
1082 /* Rather boring; check for individual interrupts and process them. */
1084 spin_lock(&chip->reg_lock);
1085 if (status & NM2_PLAYBACK_INT) {
1086 status &= ~NM2_PLAYBACK_INT;
1087 NM2_ACK_INT(chip, NM2_PLAYBACK_INT);
1088 snd_nm256_playback_update(chip);
1091 if (status & NM2_RECORD_INT) {
1092 status &= ~NM2_RECORD_INT;
1093 NM2_ACK_INT(chip, NM2_RECORD_INT);
1094 snd_nm256_capture_update(chip);
1097 if (status & NM2_MISC_INT_1) {
1098 status &= ~NM2_MISC_INT_1;
1099 NM2_ACK_INT(chip, NM2_MISC_INT_1);
1100 snd_printd("NM256: Got misc interrupt #1\n");
1101 cbyte = snd_nm256_readb(chip, 0x400);
1102 snd_nm256_writeb(chip, 0x400, cbyte | 2);
1105 if (status & NM2_MISC_INT_2) {
1106 status &= ~NM2_MISC_INT_2;
1107 NM2_ACK_INT(chip, NM2_MISC_INT_2);
1108 snd_printd("NM256: Got misc interrupt #2\n");
1109 cbyte = snd_nm256_readb(chip, 0x400);
1110 snd_nm256_writeb(chip, 0x400, cbyte & ~2);
1113 /* Unknown interrupt. */
1115 snd_printd("NM256: Fire in the hole! Unknown status 0x%x\n",
1118 NM2_ACK_INT(chip, status);
1121 spin_unlock(&chip->reg_lock);
1130 * Waits for the mixer to become ready to be written; returns a zero value
1134 snd_nm256_ac97_ready(nm256_t *chip)
1140 testaddr = chip->mixer_status_offset;
1141 testb = chip->mixer_status_mask;
1144 * Loop around waiting for the mixer to become ready.
1146 while (timeout-- > 0) {
1147 if ((snd_nm256_readw(chip, testaddr) & testb) == 0)
1156 static unsigned short
1157 snd_nm256_ac97_read(ac97_t *ac97, unsigned short reg)
1159 nm256_t *chip = ac97->private_data;
1165 if (! snd_nm256_ac97_ready(chip))
1167 res = snd_nm256_readw(chip, chip->mixer_base + reg);
1168 /* Magic delay. Bleah yucky. */
1176 snd_nm256_ac97_write(ac97_t *ac97,
1177 unsigned short reg, unsigned short val)
1179 nm256_t *chip = ac97->private_data;
1183 base = chip->mixer_base;
1185 snd_nm256_ac97_ready(chip);
1187 /* Wait for the write to take, too. */
1188 while (tries-- > 0) {
1189 snd_nm256_writew(chip, base + reg, val);
1190 msleep(1); /* a little delay here seems better.. */
1191 if (snd_nm256_ac97_ready(chip))
1194 snd_printd("nm256: ac97 codec not ready..\n");
1197 /* initialize the ac97 into a known state */
1199 snd_nm256_ac97_reset(ac97_t *ac97)
1201 nm256_t *chip = ac97->private_data;
1203 /* Reset the mixer. 'Tis magic! */
1204 snd_nm256_writeb(chip, 0x6c0, 1);
1205 if (! chip->reset_workaround) {
1206 /* Dell latitude LS will lock up by this */
1207 snd_nm256_writeb(chip, 0x6cc, 0x87);
1209 if (! chip->reset_workaround_2) {
1210 /* Dell latitude CSx will lock up by this */
1211 snd_nm256_writeb(chip, 0x6cc, 0x80);
1212 snd_nm256_writeb(chip, 0x6cc, 0x0);
1216 /* create an ac97 mixer interface */
1217 static int __devinit
1218 snd_nm256_mixer(nm256_t *chip)
1221 ac97_template_t ac97;
1223 static ac97_bus_ops_t ops = {
1224 .reset = snd_nm256_ac97_reset,
1225 .write = snd_nm256_ac97_write,
1226 .read = snd_nm256_ac97_read,
1228 /* looks like nm256 hangs up when unexpected registers are touched... */
1229 static int mixer_regs[] = {
1230 AC97_MASTER, AC97_HEADPHONE, AC97_MASTER_MONO,
1231 AC97_PC_BEEP, AC97_PHONE, AC97_MIC, AC97_LINE, AC97_CD,
1232 AC97_VIDEO, AC97_AUX, AC97_PCM, AC97_REC_SEL,
1233 AC97_REC_GAIN, AC97_GENERAL_PURPOSE, AC97_3D_CONTROL,
1234 /*AC97_EXTENDED_ID,*/
1235 AC97_VENDOR_ID1, AC97_VENDOR_ID2,
1239 if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
1242 memset(&ac97, 0, sizeof(ac97));
1243 ac97.scaps = AC97_SCAP_AUDIO; /* we support audio! */
1244 ac97.limited_regs = 1;
1245 for (i = 0; mixer_regs[i] >= 0; i++)
1246 set_bit(mixer_regs[i], ac97.reg_accessed);
1247 ac97.private_data = chip;
1249 err = snd_ac97_mixer(pbus, &ac97, &chip->ac97);
1252 if (! (chip->ac97->id & (0xf0000000))) {
1253 /* looks like an invalid id */
1254 sprintf(chip->card->mixername, "%s AC97", chip->card->driver);
1260 * See if the signature left by the NM256 BIOS is intact; if so, we use
1261 * the associated address as the end of our audio buffer in the video
1265 static int __devinit
1266 snd_nm256_peek_for_sig(nm256_t *chip)
1268 /* The signature is located 1K below the end of video RAM. */
1270 /* Default buffer end is 5120 bytes below the top of RAM. */
1271 unsigned long pointer_found = chip->buffer_end - 0x1400;
1274 temp = ioremap_nocache(chip->buffer_addr + chip->buffer_end - 0x400, 16);
1276 snd_printk(KERN_ERR "Unable to scan for card signature in video RAM\n");
1281 if ((sig & NM_SIG_MASK) == NM_SIGNATURE) {
1282 u32 pointer = readl(temp + 4);
1285 * If it's obviously invalid, don't use it
1287 if (pointer == 0xffffffff ||
1288 pointer < chip->buffer_size ||
1289 pointer > chip->buffer_end) {
1290 snd_printk(KERN_ERR "invalid signature found: 0x%x\n", pointer);
1294 pointer_found = pointer;
1295 printk(KERN_INFO "nm256: found card signature in video RAM: 0x%x\n", pointer);
1300 chip->buffer_end = pointer_found;
1307 * APM event handler, so the card is properly reinitialized after a power
1310 static int nm256_suspend(snd_card_t *card, pm_message_t state)
1312 nm256_t *chip = card->pm_private_data;
1314 snd_pcm_suspend_all(chip->pcm);
1315 snd_ac97_suspend(chip->ac97);
1316 chip->coeffs_current = 0;
1317 pci_disable_device(chip->pci);
1321 static int nm256_resume(snd_card_t *card)
1323 nm256_t *chip = card->pm_private_data;
1326 /* Perform a full reset on the hardware */
1327 pci_enable_device(chip->pci);
1328 snd_nm256_init_chip(chip);
1331 snd_ac97_resume(chip->ac97);
1333 for (i = 0; i < 2; i++) {
1334 nm256_stream_t *s = &chip->streams[i];
1335 if (s->substream && s->suspended) {
1336 spin_lock_irq(&chip->reg_lock);
1337 snd_nm256_set_format(chip, s, s->substream);
1338 spin_unlock_irq(&chip->reg_lock);
1344 #endif /* CONFIG_PM */
1346 static int snd_nm256_free(nm256_t *chip)
1348 if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running)
1349 snd_nm256_playback_stop(chip);
1350 if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running)
1351 snd_nm256_capture_stop(chip);
1354 synchronize_irq(chip->irq);
1357 iounmap(chip->cport);
1359 iounmap(chip->buffer);
1360 release_and_free_resource(chip->res_cport);
1361 release_and_free_resource(chip->res_buffer);
1363 free_irq(chip->irq, (void*)chip);
1365 pci_disable_device(chip->pci);
1370 static int snd_nm256_dev_free(snd_device_t *device)
1372 nm256_t *chip = device->device_data;
1373 return snd_nm256_free(chip);
1376 static int __devinit
1377 snd_nm256_create(snd_card_t *card, struct pci_dev *pci,
1378 int play_bufsize, int capt_bufsize,
1386 static snd_device_ops_t ops = {
1387 .dev_free = snd_nm256_dev_free,
1393 if ((err = pci_enable_device(pci)) < 0)
1396 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1398 pci_disable_device(pci);
1404 chip->use_cache = usecache;
1405 spin_lock_init(&chip->reg_lock);
1407 init_MUTEX(&chip->irq_mutex);
1409 chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize = play_bufsize;
1410 chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize = capt_bufsize;
1413 * The NM256 has two memory ports. The first port is nothing
1414 * more than a chunk of video RAM, which is used as the I/O ring
1415 * buffer. The second port has the actual juicy stuff (like the
1416 * mixer and the playback engine control registers).
1419 chip->buffer_addr = pci_resource_start(pci, 0);
1420 chip->cport_addr = pci_resource_start(pci, 1);
1422 /* Init the memory port info. */
1423 /* remap control port (#2) */
1424 chip->res_cport = request_mem_region(chip->cport_addr, NM_PORT2_SIZE,
1426 if (chip->res_cport == NULL) {
1427 snd_printk(KERN_ERR "memory region 0x%lx (size 0x%x) busy\n",
1428 chip->cport_addr, NM_PORT2_SIZE);
1432 chip->cport = ioremap_nocache(chip->cport_addr, NM_PORT2_SIZE);
1433 if (chip->cport == NULL) {
1434 snd_printk(KERN_ERR "unable to map control port %lx\n", chip->cport_addr);
1439 if (!strcmp(card->driver, "NM256AV")) {
1440 /* Ok, try to see if this is a non-AC97 version of the hardware. */
1441 pval = snd_nm256_readw(chip, NM_MIXER_PRESENCE);
1442 if ((pval & NM_PRESENCE_MASK) != NM_PRESENCE_VALUE) {
1444 printk(KERN_ERR "nm256: no ac97 is found!\n");
1445 printk(KERN_ERR " force the driver to load by passing in the module parameter\n");
1446 printk(KERN_ERR " force_ac97=1\n");
1447 printk(KERN_ERR " or try sb16 or cs423x drivers instead.\n");
1452 chip->buffer_end = 2560 * 1024;
1453 chip->interrupt = snd_nm256_interrupt;
1454 chip->mixer_status_offset = NM_MIXER_STATUS_OFFSET;
1455 chip->mixer_status_mask = NM_MIXER_READY_MASK;
1457 /* Not sure if there is any relevant detect for the ZX or not. */
1458 if (snd_nm256_readb(chip, 0xa0b) != 0)
1459 chip->buffer_end = 6144 * 1024;
1461 chip->buffer_end = 4096 * 1024;
1463 chip->interrupt = snd_nm256_interrupt_zx;
1464 chip->mixer_status_offset = NM2_MIXER_STATUS_OFFSET;
1465 chip->mixer_status_mask = NM2_MIXER_READY_MASK;
1468 chip->buffer_size = chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize + chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize;
1469 if (chip->use_cache)
1470 chip->buffer_size += NM_TOTAL_COEFF_COUNT * 4;
1472 chip->buffer_size += NM_MAX_PLAYBACK_COEF_SIZE + NM_MAX_RECORD_COEF_SIZE;
1474 if (buffertop >= chip->buffer_size && buffertop < chip->buffer_end)
1475 chip->buffer_end = buffertop;
1477 /* get buffer end pointer from signature */
1478 if ((err = snd_nm256_peek_for_sig(chip)) < 0)
1482 chip->buffer_start = chip->buffer_end - chip->buffer_size;
1483 chip->buffer_addr += chip->buffer_start;
1485 printk(KERN_INFO "nm256: Mapping port 1 from 0x%x - 0x%x\n",
1486 chip->buffer_start, chip->buffer_end);
1488 chip->res_buffer = request_mem_region(chip->buffer_addr,
1491 if (chip->res_buffer == NULL) {
1492 snd_printk(KERN_ERR "nm256: buffer 0x%lx (size 0x%x) busy\n",
1493 chip->buffer_addr, chip->buffer_size);
1497 chip->buffer = ioremap_nocache(chip->buffer_addr, chip->buffer_size);
1498 if (chip->buffer == NULL) {
1500 snd_printk(KERN_ERR "unable to map ring buffer at %lx\n", chip->buffer_addr);
1505 addr = chip->buffer_start;
1506 chip->streams[SNDRV_PCM_STREAM_PLAYBACK].buf = addr;
1507 addr += chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize;
1508 chip->streams[SNDRV_PCM_STREAM_CAPTURE].buf = addr;
1509 addr += chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize;
1510 if (chip->use_cache) {
1511 chip->all_coeff_buf = addr;
1513 chip->coeff_buf[SNDRV_PCM_STREAM_PLAYBACK] = addr;
1514 addr += NM_MAX_PLAYBACK_COEF_SIZE;
1515 chip->coeff_buf[SNDRV_PCM_STREAM_CAPTURE] = addr;
1518 /* Fixed setting. */
1519 chip->mixer_base = NM_MIXER_OFFSET;
1521 chip->coeffs_current = 0;
1523 snd_nm256_init_chip(chip);
1525 // pci_set_master(pci); /* needed? */
1527 snd_card_set_pm_callback(card, nm256_suspend, nm256_resume, chip);
1529 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
1532 snd_card_set_dev(card, &pci->dev);
1538 snd_nm256_free(chip);
1543 struct nm256_quirk {
1544 unsigned short vendor;
1545 unsigned short device;
1549 enum { NM_BLACKLISTED, NM_RESET_WORKAROUND, NM_RESET_WORKAROUND_2 };
1551 static struct nm256_quirk nm256_quirks[] __devinitdata = {
1552 /* HP omnibook 4150 has cs4232 codec internally */
1553 { .vendor = 0x103c, .device = 0x0007, .type = NM_BLACKLISTED },
1555 { .vendor = 0x104d, .device = 0x8041, .type = NM_RESET_WORKAROUND },
1556 /* Dell Latitude LS */
1557 { .vendor = 0x1028, .device = 0x0080, .type = NM_RESET_WORKAROUND },
1558 /* Dell Latitude CSx */
1559 { .vendor = 0x1028, .device = 0x0091, .type = NM_RESET_WORKAROUND_2 },
1560 { } /* terminator */
1564 static int __devinit snd_nm256_probe(struct pci_dev *pci,
1565 const struct pci_device_id *pci_id)
1570 unsigned int xbuffer_top;
1571 struct nm256_quirk *q;
1572 u16 subsystem_vendor, subsystem_device;
1574 pci_read_config_word(pci, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vendor);
1575 pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &subsystem_device);
1577 for (q = nm256_quirks; q->vendor; q++) {
1578 if (q->vendor == subsystem_vendor && q->device == subsystem_device) {
1580 case NM_BLACKLISTED:
1581 printk(KERN_INFO "nm256: The device is blacklisted. Loading stopped\n");
1583 case NM_RESET_WORKAROUND_2:
1584 reset_workaround_2 = 1;
1586 case NM_RESET_WORKAROUND:
1587 reset_workaround = 1;
1593 card = snd_card_new(index, id, THIS_MODULE, 0);
1597 switch (pci->device) {
1598 case PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO:
1599 strcpy(card->driver, "NM256AV");
1601 case PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO:
1602 strcpy(card->driver, "NM256ZX");
1604 case PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO:
1605 strcpy(card->driver, "NM256XL+");
1608 snd_printk(KERN_ERR "invalid device id 0x%x\n", pci->device);
1609 snd_card_free(card);
1614 xbuffer_top = 0x25a800; /* this avoids conflicts with XFree86 server */
1616 xbuffer_top = buffer_top;
1618 if (playback_bufsize < 4)
1619 playback_bufsize = 4;
1620 if (playback_bufsize > 128)
1621 playback_bufsize = 128;
1622 if (capture_bufsize < 4)
1623 capture_bufsize = 4;
1624 if (capture_bufsize > 128)
1625 capture_bufsize = 128;
1626 if ((err = snd_nm256_create(card, pci,
1627 playback_bufsize * 1024, /* in bytes */
1628 capture_bufsize * 1024, /* in bytes */
1633 snd_card_free(card);
1637 if (reset_workaround) {
1638 snd_printdd(KERN_INFO "nm256: reset_workaround activated\n");
1639 chip->reset_workaround = 1;
1642 if (reset_workaround_2) {
1643 snd_printdd(KERN_INFO "nm256: reset_workaround_2 activated\n");
1644 chip->reset_workaround_2 = 1;
1647 if ((err = snd_nm256_pcm(chip, 0)) < 0 ||
1648 (err = snd_nm256_mixer(chip)) < 0) {
1649 snd_card_free(card);
1653 sprintf(card->shortname, "NeoMagic %s", card->driver);
1654 sprintf(card->longname, "%s at 0x%lx & 0x%lx, irq %d",
1656 chip->buffer_addr, chip->cport_addr, chip->irq);
1658 if ((err = snd_card_register(card)) < 0) {
1659 snd_card_free(card);
1663 pci_set_drvdata(pci, card);
1667 static void __devexit snd_nm256_remove(struct pci_dev *pci)
1669 snd_card_free(pci_get_drvdata(pci));
1670 pci_set_drvdata(pci, NULL);
1674 static struct pci_driver driver = {
1675 .name = "NeoMagic 256",
1676 .owner = THIS_MODULE,
1677 .id_table = snd_nm256_ids,
1678 .probe = snd_nm256_probe,
1679 .remove = __devexit_p(snd_nm256_remove),
1680 SND_PCI_PM_CALLBACKS
1684 static int __init alsa_card_nm256_init(void)
1686 return pci_register_driver(&driver);
1689 static void __exit alsa_card_nm256_exit(void)
1691 pci_unregister_driver(&driver);
1694 module_init(alsa_card_nm256_init)
1695 module_exit(alsa_card_nm256_exit)