1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Driver for NeoMagic 256AV and 256ZX chipsets.
4 * Copyright (c) 2000 by Takashi Iwai <tiwai@suse.de>
6 * Based on nm256_audio.c OSS driver in linux kernel.
7 * The original author of OSS nm256 driver wishes to remain anonymous,
8 * so I just put my acknoledgment to him/her here.
9 * The original author's web page is found at
10 * http://www.uglx.org/sony.html
14 #include <linux/delay.h>
15 #include <linux/interrupt.h>
16 #include <linux/init.h>
17 #include <linux/pci.h>
18 #include <linux/slab.h>
19 #include <linux/module.h>
20 #include <linux/mutex.h>
22 #include <sound/core.h>
23 #include <sound/info.h>
24 #include <sound/control.h>
25 #include <sound/pcm.h>
26 #include <sound/ac97_codec.h>
27 #include <sound/initval.h>
29 #define CARD_NAME "NeoMagic 256AV/ZX"
30 #define DRIVER_NAME "NM256"
32 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
33 MODULE_DESCRIPTION("NeoMagic NM256AV/ZX");
34 MODULE_LICENSE("GPL");
35 MODULE_SUPPORTED_DEVICE("{{NeoMagic,NM256AV},"
36 "{NeoMagic,NM256ZX}}");
39 * some compile conditions.
42 static int index = SNDRV_DEFAULT_IDX1; /* Index */
43 static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
44 static int playback_bufsize = 16;
45 static int capture_bufsize = 16;
46 static bool force_ac97; /* disabled as default */
47 static int buffer_top; /* not specified */
48 static bool use_cache; /* disabled */
49 static bool vaio_hack; /* disabled */
50 static bool reset_workaround;
51 static bool reset_workaround_2;
53 module_param(index, int, 0444);
54 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
55 module_param(id, charp, 0444);
56 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
57 module_param(playback_bufsize, int, 0444);
58 MODULE_PARM_DESC(playback_bufsize, "DAC frame size in kB for " CARD_NAME " soundcard.");
59 module_param(capture_bufsize, int, 0444);
60 MODULE_PARM_DESC(capture_bufsize, "ADC frame size in kB for " CARD_NAME " soundcard.");
61 module_param(force_ac97, bool, 0444);
62 MODULE_PARM_DESC(force_ac97, "Force to use AC97 codec for " CARD_NAME " soundcard.");
63 module_param(buffer_top, int, 0444);
64 MODULE_PARM_DESC(buffer_top, "Set the top address of audio buffer for " CARD_NAME " soundcard.");
65 module_param(use_cache, bool, 0444);
66 MODULE_PARM_DESC(use_cache, "Enable the cache for coefficient table access.");
67 module_param(vaio_hack, bool, 0444);
68 MODULE_PARM_DESC(vaio_hack, "Enable workaround for Sony VAIO notebooks.");
69 module_param(reset_workaround, bool, 0444);
70 MODULE_PARM_DESC(reset_workaround, "Enable AC97 RESET workaround for some laptops.");
71 module_param(reset_workaround_2, bool, 0444);
72 MODULE_PARM_DESC(reset_workaround_2, "Enable extended AC97 RESET workaround for some other laptops.");
74 /* just for backward compatibility */
76 module_param(enable, bool, 0444);
84 /* The BIOS signature. */
85 #define NM_SIGNATURE 0x4e4d0000
87 #define NM_SIG_MASK 0xffff0000
89 /* Size of the second memory area. */
90 #define NM_PORT2_SIZE 4096
92 /* The base offset of the mixer in the second memory area. */
93 #define NM_MIXER_OFFSET 0x600
95 /* The maximum size of a coefficient entry. */
96 #define NM_MAX_PLAYBACK_COEF_SIZE 0x5000
97 #define NM_MAX_RECORD_COEF_SIZE 0x1260
99 /* The interrupt register. */
100 #define NM_INT_REG 0xa04
102 #define NM_PLAYBACK_INT 0x40
103 #define NM_RECORD_INT 0x100
104 #define NM_MISC_INT_1 0x4000
105 #define NM_MISC_INT_2 0x1
106 #define NM_ACK_INT(chip, X) snd_nm256_writew(chip, NM_INT_REG, (X) << 1)
108 /* The AV's "mixer ready" status bit and location. */
109 #define NM_MIXER_STATUS_OFFSET 0xa04
110 #define NM_MIXER_READY_MASK 0x0800
111 #define NM_MIXER_PRESENCE 0xa06
112 #define NM_PRESENCE_MASK 0x0050
113 #define NM_PRESENCE_VALUE 0x0040
116 * For the ZX. It uses the same interrupt register, but it holds 32
117 * bits instead of 16.
119 #define NM2_PLAYBACK_INT 0x10000
120 #define NM2_RECORD_INT 0x80000
121 #define NM2_MISC_INT_1 0x8
122 #define NM2_MISC_INT_2 0x2
123 #define NM2_ACK_INT(chip, X) snd_nm256_writel(chip, NM_INT_REG, (X))
125 /* The ZX's "mixer ready" status bit and location. */
126 #define NM2_MIXER_STATUS_OFFSET 0xa06
127 #define NM2_MIXER_READY_MASK 0x0800
129 /* The playback registers start from here. */
130 #define NM_PLAYBACK_REG_OFFSET 0x0
131 /* The record registers start from here. */
132 #define NM_RECORD_REG_OFFSET 0x200
134 /* The rate register is located 2 bytes from the start of the register area. */
135 #define NM_RATE_REG_OFFSET 2
137 /* Mono/stereo flag, number of bits on playback, and rate mask. */
138 #define NM_RATE_STEREO 1
139 #define NM_RATE_BITS_16 2
140 #define NM_RATE_MASK 0xf0
142 /* Playback enable register. */
143 #define NM_PLAYBACK_ENABLE_REG (NM_PLAYBACK_REG_OFFSET + 0x1)
144 #define NM_PLAYBACK_ENABLE_FLAG 1
145 #define NM_PLAYBACK_ONESHOT 2
146 #define NM_PLAYBACK_FREERUN 4
148 /* Mutes the audio output. */
149 #define NM_AUDIO_MUTE_REG (NM_PLAYBACK_REG_OFFSET + 0x18)
150 #define NM_AUDIO_MUTE_LEFT 0x8000
151 #define NM_AUDIO_MUTE_RIGHT 0x0080
153 /* Recording enable register. */
154 #define NM_RECORD_ENABLE_REG (NM_RECORD_REG_OFFSET + 0)
155 #define NM_RECORD_ENABLE_FLAG 1
156 #define NM_RECORD_FREERUN 2
158 /* coefficient buffer pointer */
159 #define NM_COEFF_START_OFFSET 0x1c
160 #define NM_COEFF_END_OFFSET 0x20
162 /* DMA buffer offsets */
163 #define NM_RBUFFER_START (NM_RECORD_REG_OFFSET + 0x4)
164 #define NM_RBUFFER_END (NM_RECORD_REG_OFFSET + 0x10)
165 #define NM_RBUFFER_WMARK (NM_RECORD_REG_OFFSET + 0xc)
166 #define NM_RBUFFER_CURRP (NM_RECORD_REG_OFFSET + 0x8)
168 #define NM_PBUFFER_START (NM_PLAYBACK_REG_OFFSET + 0x4)
169 #define NM_PBUFFER_END (NM_PLAYBACK_REG_OFFSET + 0x14)
170 #define NM_PBUFFER_WMARK (NM_PLAYBACK_REG_OFFSET + 0xc)
171 #define NM_PBUFFER_CURRP (NM_PLAYBACK_REG_OFFSET + 0x8)
173 struct nm256_stream {
176 struct snd_pcm_substream *substream;
180 u32 buf; /* offset from chip->buffer */
181 int bufsize; /* buffer size in bytes */
182 void __iomem *bufptr; /* mapped pointer */
183 unsigned long bufptr_addr; /* physical address of the mapped pointer */
185 int dma_size; /* buffer size of the substream in bytes */
186 int period_size; /* period size in bytes */
187 int periods; /* # of periods */
188 int shift; /* bit shifts */
189 int cur_period; /* current period # */
195 struct snd_card *card;
197 void __iomem *cport; /* control port */
198 struct resource *res_cport; /* its resource */
199 unsigned long cport_addr; /* physical address */
201 void __iomem *buffer; /* buffer */
202 struct resource *res_buffer; /* its resource */
203 unsigned long buffer_addr; /* buffer phyiscal address */
205 u32 buffer_start; /* start offset from pci resource 0 */
206 u32 buffer_end; /* end offset */
207 u32 buffer_size; /* total buffer size */
209 u32 all_coeff_buf; /* coefficient buffer */
210 u32 coeff_buf[2]; /* coefficient buffer for each stream */
212 unsigned int coeffs_current: 1; /* coeff. table is loaded? */
213 unsigned int use_cache: 1; /* use one big coef. table */
214 unsigned int reset_workaround: 1; /* Workaround for some laptops to avoid freeze */
215 unsigned int reset_workaround_2: 1; /* Extended workaround for some other laptops to avoid freeze */
216 unsigned int in_resume: 1;
218 int mixer_base; /* register offset of ac97 mixer */
219 int mixer_status_offset; /* offset of mixer status reg. */
220 int mixer_status_mask; /* bit mask to test the mixer status */
224 irq_handler_t interrupt;
225 int badintrcount; /* counter to check bogus interrupts */
226 struct mutex irq_mutex;
228 struct nm256_stream streams[2];
230 struct snd_ac97 *ac97;
231 unsigned short *ac97_regs; /* register caches, only for valid regs */
243 * include coefficient table
245 #include "nm256_coef.c"
251 static const struct pci_device_id snd_nm256_ids[] = {
252 {PCI_VDEVICE(NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO), 0},
253 {PCI_VDEVICE(NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO), 0},
254 {PCI_VDEVICE(NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO), 0},
258 MODULE_DEVICE_TABLE(pci, snd_nm256_ids);
266 snd_nm256_readb(struct nm256 *chip, int offset)
268 return readb(chip->cport + offset);
272 snd_nm256_readw(struct nm256 *chip, int offset)
274 return readw(chip->cport + offset);
278 snd_nm256_readl(struct nm256 *chip, int offset)
280 return readl(chip->cport + offset);
284 snd_nm256_writeb(struct nm256 *chip, int offset, u8 val)
286 writeb(val, chip->cport + offset);
290 snd_nm256_writew(struct nm256 *chip, int offset, u16 val)
292 writew(val, chip->cport + offset);
296 snd_nm256_writel(struct nm256 *chip, int offset, u32 val)
298 writel(val, chip->cport + offset);
302 snd_nm256_write_buffer(struct nm256 *chip, void *src, int offset, int size)
304 offset -= chip->buffer_start;
305 #ifdef CONFIG_SND_DEBUG
306 if (offset < 0 || offset >= chip->buffer_size) {
307 dev_err(chip->card->dev,
308 "write_buffer invalid offset = %d size = %d\n",
313 memcpy_toio(chip->buffer + offset, src, size);
317 * coefficient handlers -- what a magic!
321 snd_nm256_get_start_offset(int which)
325 offset += coefficient_sizes[which];
330 snd_nm256_load_one_coefficient(struct nm256 *chip, int stream, u32 port, int which)
332 u32 coeff_buf = chip->coeff_buf[stream];
333 u16 offset = snd_nm256_get_start_offset(which);
334 u16 size = coefficient_sizes[which];
336 snd_nm256_write_buffer(chip, coefficients + offset, coeff_buf, size);
337 snd_nm256_writel(chip, port, coeff_buf);
338 /* ??? Record seems to behave differently than playback. */
339 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
341 snd_nm256_writel(chip, port + 4, coeff_buf + size);
345 snd_nm256_load_coefficient(struct nm256 *chip, int stream, int number)
347 /* The enable register for the specified engine. */
348 u32 poffset = (stream == SNDRV_PCM_STREAM_CAPTURE ?
349 NM_RECORD_ENABLE_REG : NM_PLAYBACK_ENABLE_REG);
350 u32 addr = NM_COEFF_START_OFFSET;
352 addr += (stream == SNDRV_PCM_STREAM_CAPTURE ?
353 NM_RECORD_REG_OFFSET : NM_PLAYBACK_REG_OFFSET);
355 if (snd_nm256_readb(chip, poffset) & 1) {
356 dev_dbg(chip->card->dev,
357 "NM256: Engine was enabled while loading coefficients!\n");
361 /* The recording engine uses coefficient values 8-15. */
363 if (stream == SNDRV_PCM_STREAM_CAPTURE)
366 if (! chip->use_cache) {
367 snd_nm256_load_one_coefficient(chip, stream, addr, number);
370 if (! chip->coeffs_current) {
371 snd_nm256_write_buffer(chip, coefficients, chip->all_coeff_buf,
372 NM_TOTAL_COEFF_COUNT * 4);
373 chip->coeffs_current = 1;
375 u32 base = chip->all_coeff_buf;
376 u32 offset = snd_nm256_get_start_offset(number);
377 u32 end_offset = offset + coefficient_sizes[number];
378 snd_nm256_writel(chip, addr, base + offset);
379 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
381 snd_nm256_writel(chip, addr + 4, base + end_offset);
386 /* The actual rates supported by the card. */
387 static const unsigned int samplerates[8] = {
388 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000,
390 static const struct snd_pcm_hw_constraint_list constraints_rates = {
391 .count = ARRAY_SIZE(samplerates),
397 * return the index of the target rate
400 snd_nm256_fixed_rate(unsigned int rate)
403 for (i = 0; i < ARRAY_SIZE(samplerates); i++) {
404 if (rate == samplerates[i])
412 * set sample rate and format
415 snd_nm256_set_format(struct nm256 *chip, struct nm256_stream *s,
416 struct snd_pcm_substream *substream)
418 struct snd_pcm_runtime *runtime = substream->runtime;
419 int rate_index = snd_nm256_fixed_rate(runtime->rate);
420 unsigned char ratebits = (rate_index << 4) & NM_RATE_MASK;
423 if (snd_pcm_format_width(runtime->format) == 16) {
424 ratebits |= NM_RATE_BITS_16;
427 if (runtime->channels > 1) {
428 ratebits |= NM_RATE_STEREO;
432 runtime->rate = samplerates[rate_index];
434 switch (substream->stream) {
435 case SNDRV_PCM_STREAM_PLAYBACK:
436 snd_nm256_load_coefficient(chip, 0, rate_index); /* 0 = playback */
437 snd_nm256_writeb(chip,
438 NM_PLAYBACK_REG_OFFSET + NM_RATE_REG_OFFSET,
441 case SNDRV_PCM_STREAM_CAPTURE:
442 snd_nm256_load_coefficient(chip, 1, rate_index); /* 1 = record */
443 snd_nm256_writeb(chip,
444 NM_RECORD_REG_OFFSET + NM_RATE_REG_OFFSET,
450 /* acquire interrupt */
451 static int snd_nm256_acquire_irq(struct nm256 *chip)
453 mutex_lock(&chip->irq_mutex);
455 if (request_irq(chip->pci->irq, chip->interrupt, IRQF_SHARED,
456 KBUILD_MODNAME, chip)) {
457 dev_err(chip->card->dev,
458 "unable to grab IRQ %d\n", chip->pci->irq);
459 mutex_unlock(&chip->irq_mutex);
462 chip->irq = chip->pci->irq;
465 mutex_unlock(&chip->irq_mutex);
469 /* release interrupt */
470 static void snd_nm256_release_irq(struct nm256 *chip)
472 mutex_lock(&chip->irq_mutex);
473 if (chip->irq_acks > 0)
475 if (chip->irq_acks == 0 && chip->irq >= 0) {
476 free_irq(chip->irq, chip);
479 mutex_unlock(&chip->irq_mutex);
486 /* update the watermark (current period) */
487 static void snd_nm256_pcm_mark(struct nm256 *chip, struct nm256_stream *s, int reg)
490 s->cur_period %= s->periods;
491 snd_nm256_writel(chip, reg, s->buf + s->cur_period * s->period_size);
494 #define snd_nm256_playback_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_PBUFFER_WMARK)
495 #define snd_nm256_capture_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_RBUFFER_WMARK)
498 snd_nm256_playback_start(struct nm256 *chip, struct nm256_stream *s,
499 struct snd_pcm_substream *substream)
501 /* program buffer pointers */
502 snd_nm256_writel(chip, NM_PBUFFER_START, s->buf);
503 snd_nm256_writel(chip, NM_PBUFFER_END, s->buf + s->dma_size - (1 << s->shift));
504 snd_nm256_writel(chip, NM_PBUFFER_CURRP, s->buf);
505 snd_nm256_playback_mark(chip, s);
507 /* Enable playback engine and interrupts. */
508 snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG,
509 NM_PLAYBACK_ENABLE_FLAG | NM_PLAYBACK_FREERUN);
510 /* Enable both channels. */
511 snd_nm256_writew(chip, NM_AUDIO_MUTE_REG, 0x0);
515 snd_nm256_capture_start(struct nm256 *chip, struct nm256_stream *s,
516 struct snd_pcm_substream *substream)
518 /* program buffer pointers */
519 snd_nm256_writel(chip, NM_RBUFFER_START, s->buf);
520 snd_nm256_writel(chip, NM_RBUFFER_END, s->buf + s->dma_size);
521 snd_nm256_writel(chip, NM_RBUFFER_CURRP, s->buf);
522 snd_nm256_capture_mark(chip, s);
524 /* Enable playback engine and interrupts. */
525 snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG,
526 NM_RECORD_ENABLE_FLAG | NM_RECORD_FREERUN);
529 /* Stop the play engine. */
531 snd_nm256_playback_stop(struct nm256 *chip)
533 /* Shut off sound from both channels. */
534 snd_nm256_writew(chip, NM_AUDIO_MUTE_REG,
535 NM_AUDIO_MUTE_LEFT | NM_AUDIO_MUTE_RIGHT);
536 /* Disable play engine. */
537 snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG, 0);
541 snd_nm256_capture_stop(struct nm256 *chip)
543 /* Disable recording engine. */
544 snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG, 0);
548 snd_nm256_playback_trigger(struct snd_pcm_substream *substream, int cmd)
550 struct nm256 *chip = snd_pcm_substream_chip(substream);
551 struct nm256_stream *s = substream->runtime->private_data;
557 spin_lock(&chip->reg_lock);
559 case SNDRV_PCM_TRIGGER_RESUME:
562 case SNDRV_PCM_TRIGGER_START:
564 snd_nm256_playback_start(chip, s, substream);
568 case SNDRV_PCM_TRIGGER_SUSPEND:
571 case SNDRV_PCM_TRIGGER_STOP:
573 snd_nm256_playback_stop(chip);
581 spin_unlock(&chip->reg_lock);
586 snd_nm256_capture_trigger(struct snd_pcm_substream *substream, int cmd)
588 struct nm256 *chip = snd_pcm_substream_chip(substream);
589 struct nm256_stream *s = substream->runtime->private_data;
595 spin_lock(&chip->reg_lock);
597 case SNDRV_PCM_TRIGGER_START:
598 case SNDRV_PCM_TRIGGER_RESUME:
600 snd_nm256_capture_start(chip, s, substream);
604 case SNDRV_PCM_TRIGGER_STOP:
605 case SNDRV_PCM_TRIGGER_SUSPEND:
607 snd_nm256_capture_stop(chip);
615 spin_unlock(&chip->reg_lock);
621 * prepare playback/capture channel
623 static int snd_nm256_pcm_prepare(struct snd_pcm_substream *substream)
625 struct nm256 *chip = snd_pcm_substream_chip(substream);
626 struct snd_pcm_runtime *runtime = substream->runtime;
627 struct nm256_stream *s = runtime->private_data;
631 s->dma_size = frames_to_bytes(runtime, substream->runtime->buffer_size);
632 s->period_size = frames_to_bytes(runtime, substream->runtime->period_size);
633 s->periods = substream->runtime->periods;
636 spin_lock_irq(&chip->reg_lock);
638 snd_nm256_set_format(chip, s, substream);
639 spin_unlock_irq(&chip->reg_lock);
646 * get the current pointer
648 static snd_pcm_uframes_t
649 snd_nm256_playback_pointer(struct snd_pcm_substream *substream)
651 struct nm256 *chip = snd_pcm_substream_chip(substream);
652 struct nm256_stream *s = substream->runtime->private_data;
657 curp = snd_nm256_readl(chip, NM_PBUFFER_CURRP) - (unsigned long)s->buf;
659 return bytes_to_frames(substream->runtime, curp);
662 static snd_pcm_uframes_t
663 snd_nm256_capture_pointer(struct snd_pcm_substream *substream)
665 struct nm256 *chip = snd_pcm_substream_chip(substream);
666 struct nm256_stream *s = substream->runtime->private_data;
671 curp = snd_nm256_readl(chip, NM_RBUFFER_CURRP) - (unsigned long)s->buf;
673 return bytes_to_frames(substream->runtime, curp);
676 /* Remapped I/O space can be accessible as pointer on i386 */
677 /* This might be changed in the future */
680 * silence / copy for playback
683 snd_nm256_playback_silence(struct snd_pcm_substream *substream,
684 int channel, unsigned long pos, unsigned long count)
686 struct snd_pcm_runtime *runtime = substream->runtime;
687 struct nm256_stream *s = runtime->private_data;
689 memset_io(s->bufptr + pos, 0, count);
694 snd_nm256_playback_copy(struct snd_pcm_substream *substream,
695 int channel, unsigned long pos,
696 void __user *src, unsigned long count)
698 struct snd_pcm_runtime *runtime = substream->runtime;
699 struct nm256_stream *s = runtime->private_data;
701 if (copy_from_user_toio(s->bufptr + pos, src, count))
707 snd_nm256_playback_copy_kernel(struct snd_pcm_substream *substream,
708 int channel, unsigned long pos,
709 void *src, unsigned long count)
711 struct snd_pcm_runtime *runtime = substream->runtime;
712 struct nm256_stream *s = runtime->private_data;
714 memcpy_toio(s->bufptr + pos, src, count);
722 snd_nm256_capture_copy(struct snd_pcm_substream *substream,
723 int channel, unsigned long pos,
724 void __user *dst, unsigned long count)
726 struct snd_pcm_runtime *runtime = substream->runtime;
727 struct nm256_stream *s = runtime->private_data;
729 if (copy_to_user_fromio(dst, s->bufptr + pos, count))
735 snd_nm256_capture_copy_kernel(struct snd_pcm_substream *substream,
736 int channel, unsigned long pos,
737 void *dst, unsigned long count)
739 struct snd_pcm_runtime *runtime = substream->runtime;
740 struct nm256_stream *s = runtime->private_data;
742 memcpy_fromio(dst, s->bufptr + pos, count);
746 #endif /* !__i386__ */
750 * update playback/capture watermarks
755 snd_nm256_playback_update(struct nm256 *chip)
757 struct nm256_stream *s;
759 s = &chip->streams[SNDRV_PCM_STREAM_PLAYBACK];
760 if (s->running && s->substream) {
761 spin_unlock(&chip->reg_lock);
762 snd_pcm_period_elapsed(s->substream);
763 spin_lock(&chip->reg_lock);
764 snd_nm256_playback_mark(chip, s);
770 snd_nm256_capture_update(struct nm256 *chip)
772 struct nm256_stream *s;
774 s = &chip->streams[SNDRV_PCM_STREAM_CAPTURE];
775 if (s->running && s->substream) {
776 spin_unlock(&chip->reg_lock);
777 snd_pcm_period_elapsed(s->substream);
778 spin_lock(&chip->reg_lock);
779 snd_nm256_capture_mark(chip, s);
786 static struct snd_pcm_hardware snd_nm256_playback =
788 .info = SNDRV_PCM_INFO_MMAP_IOMEM |SNDRV_PCM_INFO_MMAP_VALID |
789 SNDRV_PCM_INFO_INTERLEAVED |
790 /*SNDRV_PCM_INFO_PAUSE |*/
791 SNDRV_PCM_INFO_RESUME,
792 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
793 .rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000,
800 .buffer_bytes_max = 128 * 1024,
801 .period_bytes_min = 256,
802 .period_bytes_max = 128 * 1024,
805 static struct snd_pcm_hardware snd_nm256_capture =
807 .info = SNDRV_PCM_INFO_MMAP_IOMEM | SNDRV_PCM_INFO_MMAP_VALID |
808 SNDRV_PCM_INFO_INTERLEAVED |
809 /*SNDRV_PCM_INFO_PAUSE |*/
810 SNDRV_PCM_INFO_RESUME,
811 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
812 .rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000,
819 .buffer_bytes_max = 128 * 1024,
820 .period_bytes_min = 256,
821 .period_bytes_max = 128 * 1024,
825 /* set dma transfer size */
826 static int snd_nm256_pcm_hw_params(struct snd_pcm_substream *substream,
827 struct snd_pcm_hw_params *hw_params)
829 /* area and addr are already set and unchanged */
830 substream->runtime->dma_bytes = params_buffer_bytes(hw_params);
837 static void snd_nm256_setup_stream(struct nm256 *chip, struct nm256_stream *s,
838 struct snd_pcm_substream *substream,
839 struct snd_pcm_hardware *hw_ptr)
841 struct snd_pcm_runtime *runtime = substream->runtime;
844 runtime->hw = *hw_ptr;
845 runtime->hw.buffer_bytes_max = s->bufsize;
846 runtime->hw.period_bytes_max = s->bufsize / 2;
847 runtime->dma_area = (void __force *) s->bufptr;
848 runtime->dma_addr = s->bufptr_addr;
849 runtime->dma_bytes = s->bufsize;
850 runtime->private_data = s;
851 s->substream = substream;
853 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
858 snd_nm256_playback_open(struct snd_pcm_substream *substream)
860 struct nm256 *chip = snd_pcm_substream_chip(substream);
862 if (snd_nm256_acquire_irq(chip) < 0)
864 snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_PLAYBACK],
865 substream, &snd_nm256_playback);
870 snd_nm256_capture_open(struct snd_pcm_substream *substream)
872 struct nm256 *chip = snd_pcm_substream_chip(substream);
874 if (snd_nm256_acquire_irq(chip) < 0)
876 snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_CAPTURE],
877 substream, &snd_nm256_capture);
882 * close - we don't have to do special..
885 snd_nm256_playback_close(struct snd_pcm_substream *substream)
887 struct nm256 *chip = snd_pcm_substream_chip(substream);
889 snd_nm256_release_irq(chip);
895 snd_nm256_capture_close(struct snd_pcm_substream *substream)
897 struct nm256 *chip = snd_pcm_substream_chip(substream);
899 snd_nm256_release_irq(chip);
904 * create a pcm instance
906 static const struct snd_pcm_ops snd_nm256_playback_ops = {
907 .open = snd_nm256_playback_open,
908 .close = snd_nm256_playback_close,
909 .ioctl = snd_pcm_lib_ioctl,
910 .hw_params = snd_nm256_pcm_hw_params,
911 .prepare = snd_nm256_pcm_prepare,
912 .trigger = snd_nm256_playback_trigger,
913 .pointer = snd_nm256_playback_pointer,
915 .copy_user = snd_nm256_playback_copy,
916 .copy_kernel = snd_nm256_playback_copy_kernel,
917 .fill_silence = snd_nm256_playback_silence,
919 .mmap = snd_pcm_lib_mmap_iomem,
922 static const struct snd_pcm_ops snd_nm256_capture_ops = {
923 .open = snd_nm256_capture_open,
924 .close = snd_nm256_capture_close,
925 .ioctl = snd_pcm_lib_ioctl,
926 .hw_params = snd_nm256_pcm_hw_params,
927 .prepare = snd_nm256_pcm_prepare,
928 .trigger = snd_nm256_capture_trigger,
929 .pointer = snd_nm256_capture_pointer,
931 .copy_user = snd_nm256_capture_copy,
932 .copy_kernel = snd_nm256_capture_copy_kernel,
934 .mmap = snd_pcm_lib_mmap_iomem,
938 snd_nm256_pcm(struct nm256 *chip, int device)
943 for (i = 0; i < 2; i++) {
944 struct nm256_stream *s = &chip->streams[i];
945 s->bufptr = chip->buffer + (s->buf - chip->buffer_start);
946 s->bufptr_addr = chip->buffer_addr + (s->buf - chip->buffer_start);
949 err = snd_pcm_new(chip->card, chip->card->driver, device,
954 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_nm256_playback_ops);
955 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_nm256_capture_ops);
957 pcm->private_data = chip;
966 * Initialize the hardware.
969 snd_nm256_init_chip(struct nm256 *chip)
971 /* Reset everything. */
972 snd_nm256_writeb(chip, 0x0, 0x11);
973 snd_nm256_writew(chip, 0x214, 0);
975 //snd_nm256_playback_stop(chip);
976 //snd_nm256_capture_stop(chip);
981 snd_nm256_intr_check(struct nm256 *chip)
983 if (chip->badintrcount++ > 1000) {
985 * I'm not sure if the best thing is to stop the card from
986 * playing or just release the interrupt (after all, we're in
987 * a bad situation, so doing fancy stuff may not be such a good
990 * I worry about the card engine continuing to play noise
991 * over and over, however--that could become a very
992 * obnoxious problem. And we know that when this usually
993 * happens things are fairly safe, it just means the user's
994 * inserted a PCMCIA card and someone's spamming us with IRQ 9s.
996 if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running)
997 snd_nm256_playback_stop(chip);
998 if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running)
999 snd_nm256_capture_stop(chip);
1000 chip->badintrcount = 0;
1007 * Handle a potential interrupt for the device referred to by DEV_ID.
1009 * I don't like the cut-n-paste job here either between the two routines,
1010 * but there are sufficient differences between the two interrupt handlers
1011 * that parameterizing it isn't all that great either. (Could use a macro,
1012 * I suppose...yucky bleah.)
1016 snd_nm256_interrupt(int irq, void *dev_id)
1018 struct nm256 *chip = dev_id;
1022 status = snd_nm256_readw(chip, NM_INT_REG);
1026 return snd_nm256_intr_check(chip);
1028 chip->badintrcount = 0;
1030 /* Rather boring; check for individual interrupts and process them. */
1032 spin_lock(&chip->reg_lock);
1033 if (status & NM_PLAYBACK_INT) {
1034 status &= ~NM_PLAYBACK_INT;
1035 NM_ACK_INT(chip, NM_PLAYBACK_INT);
1036 snd_nm256_playback_update(chip);
1039 if (status & NM_RECORD_INT) {
1040 status &= ~NM_RECORD_INT;
1041 NM_ACK_INT(chip, NM_RECORD_INT);
1042 snd_nm256_capture_update(chip);
1045 if (status & NM_MISC_INT_1) {
1046 status &= ~NM_MISC_INT_1;
1047 NM_ACK_INT(chip, NM_MISC_INT_1);
1048 dev_dbg(chip->card->dev, "NM256: Got misc interrupt #1\n");
1049 snd_nm256_writew(chip, NM_INT_REG, 0x8000);
1050 cbyte = snd_nm256_readb(chip, 0x400);
1051 snd_nm256_writeb(chip, 0x400, cbyte | 2);
1054 if (status & NM_MISC_INT_2) {
1055 status &= ~NM_MISC_INT_2;
1056 NM_ACK_INT(chip, NM_MISC_INT_2);
1057 dev_dbg(chip->card->dev, "NM256: Got misc interrupt #2\n");
1058 cbyte = snd_nm256_readb(chip, 0x400);
1059 snd_nm256_writeb(chip, 0x400, cbyte & ~2);
1062 /* Unknown interrupt. */
1064 dev_dbg(chip->card->dev,
1065 "NM256: Fire in the hole! Unknown status 0x%x\n",
1068 NM_ACK_INT(chip, status);
1071 spin_unlock(&chip->reg_lock);
1076 * Handle a potential interrupt for the device referred to by DEV_ID.
1077 * This handler is for the 256ZX, and is very similar to the non-ZX
1082 snd_nm256_interrupt_zx(int irq, void *dev_id)
1084 struct nm256 *chip = dev_id;
1088 status = snd_nm256_readl(chip, NM_INT_REG);
1092 return snd_nm256_intr_check(chip);
1094 chip->badintrcount = 0;
1096 /* Rather boring; check for individual interrupts and process them. */
1098 spin_lock(&chip->reg_lock);
1099 if (status & NM2_PLAYBACK_INT) {
1100 status &= ~NM2_PLAYBACK_INT;
1101 NM2_ACK_INT(chip, NM2_PLAYBACK_INT);
1102 snd_nm256_playback_update(chip);
1105 if (status & NM2_RECORD_INT) {
1106 status &= ~NM2_RECORD_INT;
1107 NM2_ACK_INT(chip, NM2_RECORD_INT);
1108 snd_nm256_capture_update(chip);
1111 if (status & NM2_MISC_INT_1) {
1112 status &= ~NM2_MISC_INT_1;
1113 NM2_ACK_INT(chip, NM2_MISC_INT_1);
1114 dev_dbg(chip->card->dev, "NM256: Got misc interrupt #1\n");
1115 cbyte = snd_nm256_readb(chip, 0x400);
1116 snd_nm256_writeb(chip, 0x400, cbyte | 2);
1119 if (status & NM2_MISC_INT_2) {
1120 status &= ~NM2_MISC_INT_2;
1121 NM2_ACK_INT(chip, NM2_MISC_INT_2);
1122 dev_dbg(chip->card->dev, "NM256: Got misc interrupt #2\n");
1123 cbyte = snd_nm256_readb(chip, 0x400);
1124 snd_nm256_writeb(chip, 0x400, cbyte & ~2);
1127 /* Unknown interrupt. */
1129 dev_dbg(chip->card->dev,
1130 "NM256: Fire in the hole! Unknown status 0x%x\n",
1133 NM2_ACK_INT(chip, status);
1136 spin_unlock(&chip->reg_lock);
1145 * Waits for the mixer to become ready to be written; returns a zero value
1149 snd_nm256_ac97_ready(struct nm256 *chip)
1155 testaddr = chip->mixer_status_offset;
1156 testb = chip->mixer_status_mask;
1159 * Loop around waiting for the mixer to become ready.
1161 while (timeout-- > 0) {
1162 if ((snd_nm256_readw(chip, testaddr) & testb) == 0)
1170 * Initial register values to be written to the AC97 mixer.
1171 * While most of these are identical to the reset values, we do this
1172 * so that we have most of the register contents cached--this avoids
1173 * reading from the mixer directly (which seems to be problematic,
1174 * probably due to ignorance).
1177 struct initialValues {
1179 unsigned short value;
1182 static struct initialValues nm256_ac97_init_val[] =
1184 { AC97_MASTER, 0x8000 },
1185 { AC97_HEADPHONE, 0x8000 },
1186 { AC97_MASTER_MONO, 0x8000 },
1187 { AC97_PC_BEEP, 0x8000 },
1188 { AC97_PHONE, 0x8008 },
1189 { AC97_MIC, 0x8000 },
1190 { AC97_LINE, 0x8808 },
1191 { AC97_CD, 0x8808 },
1192 { AC97_VIDEO, 0x8808 },
1193 { AC97_AUX, 0x8808 },
1194 { AC97_PCM, 0x8808 },
1195 { AC97_REC_SEL, 0x0000 },
1196 { AC97_REC_GAIN, 0x0B0B },
1197 { AC97_GENERAL_PURPOSE, 0x0000 },
1198 { AC97_3D_CONTROL, 0x8000 },
1199 { AC97_VENDOR_ID1, 0x8384 },
1200 { AC97_VENDOR_ID2, 0x7609 },
1203 static int nm256_ac97_idx(unsigned short reg)
1206 for (i = 0; i < ARRAY_SIZE(nm256_ac97_init_val); i++)
1207 if (nm256_ac97_init_val[i].reg == reg)
1213 * some nm256 easily crash when reading from mixer registers
1214 * thus we're treating it as a write-only mixer and cache the
1217 static unsigned short
1218 snd_nm256_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
1220 struct nm256 *chip = ac97->private_data;
1221 int idx = nm256_ac97_idx(reg);
1225 return chip->ac97_regs[idx];
1231 snd_nm256_ac97_write(struct snd_ac97 *ac97,
1232 unsigned short reg, unsigned short val)
1234 struct nm256 *chip = ac97->private_data;
1236 int idx = nm256_ac97_idx(reg);
1242 base = chip->mixer_base;
1244 snd_nm256_ac97_ready(chip);
1246 /* Wait for the write to take, too. */
1247 while (tries-- > 0) {
1248 snd_nm256_writew(chip, base + reg, val);
1249 msleep(1); /* a little delay here seems better.. */
1250 if (snd_nm256_ac97_ready(chip)) {
1251 /* successful write: set cache */
1252 chip->ac97_regs[idx] = val;
1256 dev_dbg(chip->card->dev, "nm256: ac97 codec not ready..\n");
1259 /* static resolution table */
1260 static const struct snd_ac97_res_table nm256_res_table[] = {
1261 { AC97_MASTER, 0x1f1f },
1262 { AC97_HEADPHONE, 0x1f1f },
1263 { AC97_MASTER_MONO, 0x001f },
1264 { AC97_PC_BEEP, 0x001f },
1265 { AC97_PHONE, 0x001f },
1266 { AC97_MIC, 0x001f },
1267 { AC97_LINE, 0x1f1f },
1268 { AC97_CD, 0x1f1f },
1269 { AC97_VIDEO, 0x1f1f },
1270 { AC97_AUX, 0x1f1f },
1271 { AC97_PCM, 0x1f1f },
1272 { AC97_REC_GAIN, 0x0f0f },
1273 { } /* terminator */
1276 /* initialize the ac97 into a known state */
1278 snd_nm256_ac97_reset(struct snd_ac97 *ac97)
1280 struct nm256 *chip = ac97->private_data;
1282 /* Reset the mixer. 'Tis magic! */
1283 snd_nm256_writeb(chip, 0x6c0, 1);
1284 if (! chip->reset_workaround) {
1285 /* Dell latitude LS will lock up by this */
1286 snd_nm256_writeb(chip, 0x6cc, 0x87);
1288 if (! chip->reset_workaround_2) {
1289 /* Dell latitude CSx will lock up by this */
1290 snd_nm256_writeb(chip, 0x6cc, 0x80);
1291 snd_nm256_writeb(chip, 0x6cc, 0x0);
1293 if (! chip->in_resume) {
1295 for (i = 0; i < ARRAY_SIZE(nm256_ac97_init_val); i++) {
1296 /* preload the cache, so as to avoid even a single
1297 * read of the mixer regs
1299 snd_nm256_ac97_write(ac97, nm256_ac97_init_val[i].reg,
1300 nm256_ac97_init_val[i].value);
1305 /* create an ac97 mixer interface */
1307 snd_nm256_mixer(struct nm256 *chip)
1309 struct snd_ac97_bus *pbus;
1310 struct snd_ac97_template ac97;
1312 static struct snd_ac97_bus_ops ops = {
1313 .reset = snd_nm256_ac97_reset,
1314 .write = snd_nm256_ac97_write,
1315 .read = snd_nm256_ac97_read,
1318 chip->ac97_regs = kcalloc(ARRAY_SIZE(nm256_ac97_init_val),
1319 sizeof(short), GFP_KERNEL);
1320 if (! chip->ac97_regs)
1323 if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
1326 memset(&ac97, 0, sizeof(ac97));
1327 ac97.scaps = AC97_SCAP_AUDIO; /* we support audio! */
1328 ac97.private_data = chip;
1329 ac97.res_table = nm256_res_table;
1331 err = snd_ac97_mixer(pbus, &ac97, &chip->ac97);
1334 if (! (chip->ac97->id & (0xf0000000))) {
1335 /* looks like an invalid id */
1336 sprintf(chip->card->mixername, "%s AC97", chip->card->driver);
1342 * See if the signature left by the NM256 BIOS is intact; if so, we use
1343 * the associated address as the end of our audio buffer in the video
1348 snd_nm256_peek_for_sig(struct nm256 *chip)
1350 /* The signature is located 1K below the end of video RAM. */
1352 /* Default buffer end is 5120 bytes below the top of RAM. */
1353 unsigned long pointer_found = chip->buffer_end - 0x1400;
1356 temp = ioremap_nocache(chip->buffer_addr + chip->buffer_end - 0x400, 16);
1358 dev_err(chip->card->dev,
1359 "Unable to scan for card signature in video RAM\n");
1364 if ((sig & NM_SIG_MASK) == NM_SIGNATURE) {
1365 u32 pointer = readl(temp + 4);
1368 * If it's obviously invalid, don't use it
1370 if (pointer == 0xffffffff ||
1371 pointer < chip->buffer_size ||
1372 pointer > chip->buffer_end) {
1373 dev_err(chip->card->dev,
1374 "invalid signature found: 0x%x\n", pointer);
1378 pointer_found = pointer;
1379 dev_info(chip->card->dev,
1380 "found card signature in video RAM: 0x%x\n",
1386 chip->buffer_end = pointer_found;
1391 #ifdef CONFIG_PM_SLEEP
1393 * APM event handler, so the card is properly reinitialized after a power
1396 static int nm256_suspend(struct device *dev)
1398 struct snd_card *card = dev_get_drvdata(dev);
1399 struct nm256 *chip = card->private_data;
1401 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1402 snd_ac97_suspend(chip->ac97);
1403 chip->coeffs_current = 0;
1407 static int nm256_resume(struct device *dev)
1409 struct snd_card *card = dev_get_drvdata(dev);
1410 struct nm256 *chip = card->private_data;
1413 /* Perform a full reset on the hardware */
1414 chip->in_resume = 1;
1416 snd_nm256_init_chip(chip);
1419 snd_ac97_resume(chip->ac97);
1421 for (i = 0; i < 2; i++) {
1422 struct nm256_stream *s = &chip->streams[i];
1423 if (s->substream && s->suspended) {
1424 spin_lock_irq(&chip->reg_lock);
1425 snd_nm256_set_format(chip, s, s->substream);
1426 spin_unlock_irq(&chip->reg_lock);
1430 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1431 chip->in_resume = 0;
1435 static SIMPLE_DEV_PM_OPS(nm256_pm, nm256_suspend, nm256_resume);
1436 #define NM256_PM_OPS &nm256_pm
1438 #define NM256_PM_OPS NULL
1439 #endif /* CONFIG_PM_SLEEP */
1441 static int snd_nm256_free(struct nm256 *chip)
1443 if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running)
1444 snd_nm256_playback_stop(chip);
1445 if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running)
1446 snd_nm256_capture_stop(chip);
1449 free_irq(chip->irq, chip);
1451 iounmap(chip->cport);
1452 iounmap(chip->buffer);
1453 release_and_free_resource(chip->res_cport);
1454 release_and_free_resource(chip->res_buffer);
1456 pci_disable_device(chip->pci);
1457 kfree(chip->ac97_regs);
1462 static int snd_nm256_dev_free(struct snd_device *device)
1464 struct nm256 *chip = device->device_data;
1465 return snd_nm256_free(chip);
1469 snd_nm256_create(struct snd_card *card, struct pci_dev *pci,
1470 struct nm256 **chip_ret)
1474 static struct snd_device_ops ops = {
1475 .dev_free = snd_nm256_dev_free,
1481 if ((err = pci_enable_device(pci)) < 0)
1484 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1486 pci_disable_device(pci);
1492 chip->use_cache = use_cache;
1493 spin_lock_init(&chip->reg_lock);
1495 mutex_init(&chip->irq_mutex);
1497 /* store buffer sizes in bytes */
1498 chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize = playback_bufsize * 1024;
1499 chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize = capture_bufsize * 1024;
1502 * The NM256 has two memory ports. The first port is nothing
1503 * more than a chunk of video RAM, which is used as the I/O ring
1504 * buffer. The second port has the actual juicy stuff (like the
1505 * mixer and the playback engine control registers).
1508 chip->buffer_addr = pci_resource_start(pci, 0);
1509 chip->cport_addr = pci_resource_start(pci, 1);
1511 /* Init the memory port info. */
1512 /* remap control port (#2) */
1513 chip->res_cport = request_mem_region(chip->cport_addr, NM_PORT2_SIZE,
1515 if (chip->res_cport == NULL) {
1516 dev_err(card->dev, "memory region 0x%lx (size 0x%x) busy\n",
1517 chip->cport_addr, NM_PORT2_SIZE);
1521 chip->cport = ioremap_nocache(chip->cport_addr, NM_PORT2_SIZE);
1522 if (chip->cport == NULL) {
1523 dev_err(card->dev, "unable to map control port %lx\n",
1529 if (!strcmp(card->driver, "NM256AV")) {
1530 /* Ok, try to see if this is a non-AC97 version of the hardware. */
1531 pval = snd_nm256_readw(chip, NM_MIXER_PRESENCE);
1532 if ((pval & NM_PRESENCE_MASK) != NM_PRESENCE_VALUE) {
1535 "no ac97 is found!\n");
1537 "force the driver to load by passing in the module parameter\n");
1541 "or try sb16, opl3sa2, or cs423x drivers instead.\n");
1546 chip->buffer_end = 2560 * 1024;
1547 chip->interrupt = snd_nm256_interrupt;
1548 chip->mixer_status_offset = NM_MIXER_STATUS_OFFSET;
1549 chip->mixer_status_mask = NM_MIXER_READY_MASK;
1551 /* Not sure if there is any relevant detect for the ZX or not. */
1552 if (snd_nm256_readb(chip, 0xa0b) != 0)
1553 chip->buffer_end = 6144 * 1024;
1555 chip->buffer_end = 4096 * 1024;
1557 chip->interrupt = snd_nm256_interrupt_zx;
1558 chip->mixer_status_offset = NM2_MIXER_STATUS_OFFSET;
1559 chip->mixer_status_mask = NM2_MIXER_READY_MASK;
1562 chip->buffer_size = chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize +
1563 chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize;
1564 if (chip->use_cache)
1565 chip->buffer_size += NM_TOTAL_COEFF_COUNT * 4;
1567 chip->buffer_size += NM_MAX_PLAYBACK_COEF_SIZE + NM_MAX_RECORD_COEF_SIZE;
1569 if (buffer_top >= chip->buffer_size && buffer_top < chip->buffer_end)
1570 chip->buffer_end = buffer_top;
1572 /* get buffer end pointer from signature */
1573 if ((err = snd_nm256_peek_for_sig(chip)) < 0)
1577 chip->buffer_start = chip->buffer_end - chip->buffer_size;
1578 chip->buffer_addr += chip->buffer_start;
1580 dev_info(card->dev, "Mapping port 1 from 0x%x - 0x%x\n",
1581 chip->buffer_start, chip->buffer_end);
1583 chip->res_buffer = request_mem_region(chip->buffer_addr,
1586 if (chip->res_buffer == NULL) {
1587 dev_err(card->dev, "buffer 0x%lx (size 0x%x) busy\n",
1588 chip->buffer_addr, chip->buffer_size);
1592 chip->buffer = ioremap_nocache(chip->buffer_addr, chip->buffer_size);
1593 if (chip->buffer == NULL) {
1595 dev_err(card->dev, "unable to map ring buffer at %lx\n",
1601 addr = chip->buffer_start;
1602 chip->streams[SNDRV_PCM_STREAM_PLAYBACK].buf = addr;
1603 addr += chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize;
1604 chip->streams[SNDRV_PCM_STREAM_CAPTURE].buf = addr;
1605 addr += chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize;
1606 if (chip->use_cache) {
1607 chip->all_coeff_buf = addr;
1609 chip->coeff_buf[SNDRV_PCM_STREAM_PLAYBACK] = addr;
1610 addr += NM_MAX_PLAYBACK_COEF_SIZE;
1611 chip->coeff_buf[SNDRV_PCM_STREAM_CAPTURE] = addr;
1614 /* Fixed setting. */
1615 chip->mixer_base = NM_MIXER_OFFSET;
1617 chip->coeffs_current = 0;
1619 snd_nm256_init_chip(chip);
1621 // pci_set_master(pci); /* needed? */
1623 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
1630 snd_nm256_free(chip);
1635 enum { NM_BLACKLISTED, NM_RESET_WORKAROUND, NM_RESET_WORKAROUND_2 };
1637 static struct snd_pci_quirk nm256_quirks[] = {
1638 /* HP omnibook 4150 has cs4232 codec internally */
1639 SND_PCI_QUIRK(0x103c, 0x0007, "HP omnibook 4150", NM_BLACKLISTED),
1640 /* Reset workarounds to avoid lock-ups */
1641 SND_PCI_QUIRK(0x104d, 0x8041, "Sony PCG-F305", NM_RESET_WORKAROUND),
1642 SND_PCI_QUIRK(0x1028, 0x0080, "Dell Latitude LS", NM_RESET_WORKAROUND),
1643 SND_PCI_QUIRK(0x1028, 0x0091, "Dell Latitude CSx", NM_RESET_WORKAROUND_2),
1644 { } /* terminator */
1648 static int snd_nm256_probe(struct pci_dev *pci,
1649 const struct pci_device_id *pci_id)
1651 struct snd_card *card;
1654 const struct snd_pci_quirk *q;
1656 q = snd_pci_quirk_lookup(pci, nm256_quirks);
1658 dev_dbg(&pci->dev, "Enabled quirk for %s.\n",
1659 snd_pci_quirk_name(q));
1661 case NM_BLACKLISTED:
1663 "The device is blacklisted. Loading stopped\n");
1665 case NM_RESET_WORKAROUND_2:
1666 reset_workaround_2 = 1;
1668 case NM_RESET_WORKAROUND:
1669 reset_workaround = 1;
1674 err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
1678 switch (pci->device) {
1679 case PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO:
1680 strcpy(card->driver, "NM256AV");
1682 case PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO:
1683 strcpy(card->driver, "NM256ZX");
1685 case PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO:
1686 strcpy(card->driver, "NM256XL+");
1689 dev_err(&pci->dev, "invalid device id 0x%x\n", pci->device);
1690 snd_card_free(card);
1695 buffer_top = 0x25a800; /* this avoids conflicts with XFree86 server */
1697 if (playback_bufsize < 4)
1698 playback_bufsize = 4;
1699 if (playback_bufsize > 128)
1700 playback_bufsize = 128;
1701 if (capture_bufsize < 4)
1702 capture_bufsize = 4;
1703 if (capture_bufsize > 128)
1704 capture_bufsize = 128;
1705 if ((err = snd_nm256_create(card, pci, &chip)) < 0) {
1706 snd_card_free(card);
1709 card->private_data = chip;
1711 if (reset_workaround) {
1712 dev_dbg(&pci->dev, "reset_workaround activated\n");
1713 chip->reset_workaround = 1;
1716 if (reset_workaround_2) {
1717 dev_dbg(&pci->dev, "reset_workaround_2 activated\n");
1718 chip->reset_workaround_2 = 1;
1721 if ((err = snd_nm256_pcm(chip, 0)) < 0 ||
1722 (err = snd_nm256_mixer(chip)) < 0) {
1723 snd_card_free(card);
1727 sprintf(card->shortname, "NeoMagic %s", card->driver);
1728 sprintf(card->longname, "%s at 0x%lx & 0x%lx, irq %d",
1730 chip->buffer_addr, chip->cport_addr, chip->irq);
1732 if ((err = snd_card_register(card)) < 0) {
1733 snd_card_free(card);
1737 pci_set_drvdata(pci, card);
1741 static void snd_nm256_remove(struct pci_dev *pci)
1743 snd_card_free(pci_get_drvdata(pci));
1747 static struct pci_driver nm256_driver = {
1748 .name = KBUILD_MODNAME,
1749 .id_table = snd_nm256_ids,
1750 .probe = snd_nm256_probe,
1751 .remove = snd_nm256_remove,
1757 module_pci_driver(nm256_driver);