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- /*
- * Driver for NeoMagic 256AV and 256ZX chipsets.
- * Copyright (c) 2000 by Takashi Iwai <tiwai@suse.de>
- *
- * Based on nm256_audio.c OSS driver in linux kernel.
- * The original author of OSS nm256 driver wishes to remain anonymous,
- * so I just put my acknoledgment to him/her here.
- * The original author's web page is found at
- * http://www.uglx.org/sony.html
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
- #include <linux/io.h>
- #include <linux/delay.h>
- #include <linux/interrupt.h>
- #include <linux/init.h>
- #include <linux/pci.h>
- #include <linux/slab.h>
- #include <linux/module.h>
- #include <linux/mutex.h>
- #include <sound/core.h>
- #include <sound/info.h>
- #include <sound/control.h>
- #include <sound/pcm.h>
- #include <sound/ac97_codec.h>
- #include <sound/initval.h>
- #define CARD_NAME "NeoMagic 256AV/ZX"
- #define DRIVER_NAME "NM256"
- MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
- MODULE_DESCRIPTION("NeoMagic NM256AV/ZX");
- MODULE_LICENSE("GPL");
- MODULE_SUPPORTED_DEVICE("{{NeoMagic,NM256AV},"
- "{NeoMagic,NM256ZX}}");
- /*
- * some compile conditions.
- */
- static int index = SNDRV_DEFAULT_IDX1; /* Index */
- static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
- static int playback_bufsize = 16;
- static int capture_bufsize = 16;
- static bool force_ac97; /* disabled as default */
- static int buffer_top; /* not specified */
- static bool use_cache; /* disabled */
- static bool vaio_hack; /* disabled */
- static bool reset_workaround;
- static bool reset_workaround_2;
- module_param(index, int, 0444);
- MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
- module_param(id, charp, 0444);
- MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
- module_param(playback_bufsize, int, 0444);
- MODULE_PARM_DESC(playback_bufsize, "DAC frame size in kB for " CARD_NAME " soundcard.");
- module_param(capture_bufsize, int, 0444);
- MODULE_PARM_DESC(capture_bufsize, "ADC frame size in kB for " CARD_NAME " soundcard.");
- module_param(force_ac97, bool, 0444);
- MODULE_PARM_DESC(force_ac97, "Force to use AC97 codec for " CARD_NAME " soundcard.");
- module_param(buffer_top, int, 0444);
- MODULE_PARM_DESC(buffer_top, "Set the top address of audio buffer for " CARD_NAME " soundcard.");
- module_param(use_cache, bool, 0444);
- MODULE_PARM_DESC(use_cache, "Enable the cache for coefficient table access.");
- module_param(vaio_hack, bool, 0444);
- MODULE_PARM_DESC(vaio_hack, "Enable workaround for Sony VAIO notebooks.");
- module_param(reset_workaround, bool, 0444);
- MODULE_PARM_DESC(reset_workaround, "Enable AC97 RESET workaround for some laptops.");
- module_param(reset_workaround_2, bool, 0444);
- MODULE_PARM_DESC(reset_workaround_2, "Enable extended AC97 RESET workaround for some other laptops.");
- /* just for backward compatibility */
- static bool enable;
- module_param(enable, bool, 0444);
- /*
- * hw definitions
- */
- /* The BIOS signature. */
- #define NM_SIGNATURE 0x4e4d0000
- /* Signature mask. */
- #define NM_SIG_MASK 0xffff0000
- /* Size of the second memory area. */
- #define NM_PORT2_SIZE 4096
- /* The base offset of the mixer in the second memory area. */
- #define NM_MIXER_OFFSET 0x600
- /* The maximum size of a coefficient entry. */
- #define NM_MAX_PLAYBACK_COEF_SIZE 0x5000
- #define NM_MAX_RECORD_COEF_SIZE 0x1260
- /* The interrupt register. */
- #define NM_INT_REG 0xa04
- /* And its bits. */
- #define NM_PLAYBACK_INT 0x40
- #define NM_RECORD_INT 0x100
- #define NM_MISC_INT_1 0x4000
- #define NM_MISC_INT_2 0x1
- #define NM_ACK_INT(chip, X) snd_nm256_writew(chip, NM_INT_REG, (X) << 1)
- /* The AV's "mixer ready" status bit and location. */
- #define NM_MIXER_STATUS_OFFSET 0xa04
- #define NM_MIXER_READY_MASK 0x0800
- #define NM_MIXER_PRESENCE 0xa06
- #define NM_PRESENCE_MASK 0x0050
- #define NM_PRESENCE_VALUE 0x0040
- /*
- * For the ZX. It uses the same interrupt register, but it holds 32
- * bits instead of 16.
- */
- #define NM2_PLAYBACK_INT 0x10000
- #define NM2_RECORD_INT 0x80000
- #define NM2_MISC_INT_1 0x8
- #define NM2_MISC_INT_2 0x2
- #define NM2_ACK_INT(chip, X) snd_nm256_writel(chip, NM_INT_REG, (X))
- /* The ZX's "mixer ready" status bit and location. */
- #define NM2_MIXER_STATUS_OFFSET 0xa06
- #define NM2_MIXER_READY_MASK 0x0800
- /* The playback registers start from here. */
- #define NM_PLAYBACK_REG_OFFSET 0x0
- /* The record registers start from here. */
- #define NM_RECORD_REG_OFFSET 0x200
- /* The rate register is located 2 bytes from the start of the register area. */
- #define NM_RATE_REG_OFFSET 2
- /* Mono/stereo flag, number of bits on playback, and rate mask. */
- #define NM_RATE_STEREO 1
- #define NM_RATE_BITS_16 2
- #define NM_RATE_MASK 0xf0
- /* Playback enable register. */
- #define NM_PLAYBACK_ENABLE_REG (NM_PLAYBACK_REG_OFFSET + 0x1)
- #define NM_PLAYBACK_ENABLE_FLAG 1
- #define NM_PLAYBACK_ONESHOT 2
- #define NM_PLAYBACK_FREERUN 4
- /* Mutes the audio output. */
- #define NM_AUDIO_MUTE_REG (NM_PLAYBACK_REG_OFFSET + 0x18)
- #define NM_AUDIO_MUTE_LEFT 0x8000
- #define NM_AUDIO_MUTE_RIGHT 0x0080
- /* Recording enable register. */
- #define NM_RECORD_ENABLE_REG (NM_RECORD_REG_OFFSET + 0)
- #define NM_RECORD_ENABLE_FLAG 1
- #define NM_RECORD_FREERUN 2
- /* coefficient buffer pointer */
- #define NM_COEFF_START_OFFSET 0x1c
- #define NM_COEFF_END_OFFSET 0x20
- /* DMA buffer offsets */
- #define NM_RBUFFER_START (NM_RECORD_REG_OFFSET + 0x4)
- #define NM_RBUFFER_END (NM_RECORD_REG_OFFSET + 0x10)
- #define NM_RBUFFER_WMARK (NM_RECORD_REG_OFFSET + 0xc)
- #define NM_RBUFFER_CURRP (NM_RECORD_REG_OFFSET + 0x8)
- #define NM_PBUFFER_START (NM_PLAYBACK_REG_OFFSET + 0x4)
- #define NM_PBUFFER_END (NM_PLAYBACK_REG_OFFSET + 0x14)
- #define NM_PBUFFER_WMARK (NM_PLAYBACK_REG_OFFSET + 0xc)
- #define NM_PBUFFER_CURRP (NM_PLAYBACK_REG_OFFSET + 0x8)
- struct nm256_stream {
- struct nm256 *chip;
- struct snd_pcm_substream *substream;
- int running;
- int suspended;
-
- u32 buf; /* offset from chip->buffer */
- int bufsize; /* buffer size in bytes */
- void __iomem *bufptr; /* mapped pointer */
- unsigned long bufptr_addr; /* physical address of the mapped pointer */
- int dma_size; /* buffer size of the substream in bytes */
- int period_size; /* period size in bytes */
- int periods; /* # of periods */
- int shift; /* bit shifts */
- int cur_period; /* current period # */
- };
- struct nm256 {
-
- struct snd_card *card;
- void __iomem *cport; /* control port */
- struct resource *res_cport; /* its resource */
- unsigned long cport_addr; /* physical address */
- void __iomem *buffer; /* buffer */
- struct resource *res_buffer; /* its resource */
- unsigned long buffer_addr; /* buffer phyiscal address */
- u32 buffer_start; /* start offset from pci resource 0 */
- u32 buffer_end; /* end offset */
- u32 buffer_size; /* total buffer size */
- u32 all_coeff_buf; /* coefficient buffer */
- u32 coeff_buf[2]; /* coefficient buffer for each stream */
- unsigned int coeffs_current: 1; /* coeff. table is loaded? */
- unsigned int use_cache: 1; /* use one big coef. table */
- unsigned int reset_workaround: 1; /* Workaround for some laptops to avoid freeze */
- unsigned int reset_workaround_2: 1; /* Extended workaround for some other laptops to avoid freeze */
- unsigned int in_resume: 1;
- int mixer_base; /* register offset of ac97 mixer */
- int mixer_status_offset; /* offset of mixer status reg. */
- int mixer_status_mask; /* bit mask to test the mixer status */
- int irq;
- int irq_acks;
- irq_handler_t interrupt;
- int badintrcount; /* counter to check bogus interrupts */
- struct mutex irq_mutex;
- struct nm256_stream streams[2];
- struct snd_ac97 *ac97;
- unsigned short *ac97_regs; /* register caches, only for valid regs */
- struct snd_pcm *pcm;
- struct pci_dev *pci;
- spinlock_t reg_lock;
- };
- /*
- * include coefficient table
- */
- #include "nm256_coef.c"
- /*
- * PCI ids
- */
- static const struct pci_device_id snd_nm256_ids[] = {
- {PCI_VDEVICE(NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO), 0},
- {PCI_VDEVICE(NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO), 0},
- {PCI_VDEVICE(NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO), 0},
- {0,},
- };
- MODULE_DEVICE_TABLE(pci, snd_nm256_ids);
- /*
- * lowlvel stuffs
- */
- static inline u8
- snd_nm256_readb(struct nm256 *chip, int offset)
- {
- return readb(chip->cport + offset);
- }
- static inline u16
- snd_nm256_readw(struct nm256 *chip, int offset)
- {
- return readw(chip->cport + offset);
- }
- static inline u32
- snd_nm256_readl(struct nm256 *chip, int offset)
- {
- return readl(chip->cport + offset);
- }
- static inline void
- snd_nm256_writeb(struct nm256 *chip, int offset, u8 val)
- {
- writeb(val, chip->cport + offset);
- }
- static inline void
- snd_nm256_writew(struct nm256 *chip, int offset, u16 val)
- {
- writew(val, chip->cport + offset);
- }
- static inline void
- snd_nm256_writel(struct nm256 *chip, int offset, u32 val)
- {
- writel(val, chip->cport + offset);
- }
- static inline void
- snd_nm256_write_buffer(struct nm256 *chip, void *src, int offset, int size)
- {
- offset -= chip->buffer_start;
- #ifdef CONFIG_SND_DEBUG
- if (offset < 0 || offset >= chip->buffer_size) {
- dev_err(chip->card->dev,
- "write_buffer invalid offset = %d size = %d\n",
- offset, size);
- return;
- }
- #endif
- memcpy_toio(chip->buffer + offset, src, size);
- }
- /*
- * coefficient handlers -- what a magic!
- */
- static u16
- snd_nm256_get_start_offset(int which)
- {
- u16 offset = 0;
- while (which-- > 0)
- offset += coefficient_sizes[which];
- return offset;
- }
- static void
- snd_nm256_load_one_coefficient(struct nm256 *chip, int stream, u32 port, int which)
- {
- u32 coeff_buf = chip->coeff_buf[stream];
- u16 offset = snd_nm256_get_start_offset(which);
- u16 size = coefficient_sizes[which];
- snd_nm256_write_buffer(chip, coefficients + offset, coeff_buf, size);
- snd_nm256_writel(chip, port, coeff_buf);
- /* ??? Record seems to behave differently than playback. */
- if (stream == SNDRV_PCM_STREAM_PLAYBACK)
- size--;
- snd_nm256_writel(chip, port + 4, coeff_buf + size);
- }
- static void
- snd_nm256_load_coefficient(struct nm256 *chip, int stream, int number)
- {
- /* The enable register for the specified engine. */
- u32 poffset = (stream == SNDRV_PCM_STREAM_CAPTURE ?
- NM_RECORD_ENABLE_REG : NM_PLAYBACK_ENABLE_REG);
- u32 addr = NM_COEFF_START_OFFSET;
- addr += (stream == SNDRV_PCM_STREAM_CAPTURE ?
- NM_RECORD_REG_OFFSET : NM_PLAYBACK_REG_OFFSET);
- if (snd_nm256_readb(chip, poffset) & 1) {
- dev_dbg(chip->card->dev,
- "NM256: Engine was enabled while loading coefficients!\n");
- return;
- }
- /* The recording engine uses coefficient values 8-15. */
- number &= 7;
- if (stream == SNDRV_PCM_STREAM_CAPTURE)
- number += 8;
- if (! chip->use_cache) {
- snd_nm256_load_one_coefficient(chip, stream, addr, number);
- return;
- }
- if (! chip->coeffs_current) {
- snd_nm256_write_buffer(chip, coefficients, chip->all_coeff_buf,
- NM_TOTAL_COEFF_COUNT * 4);
- chip->coeffs_current = 1;
- } else {
- u32 base = chip->all_coeff_buf;
- u32 offset = snd_nm256_get_start_offset(number);
- u32 end_offset = offset + coefficient_sizes[number];
- snd_nm256_writel(chip, addr, base + offset);
- if (stream == SNDRV_PCM_STREAM_PLAYBACK)
- end_offset--;
- snd_nm256_writel(chip, addr + 4, base + end_offset);
- }
- }
- /* The actual rates supported by the card. */
- static unsigned int samplerates[8] = {
- 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000,
- };
- static struct snd_pcm_hw_constraint_list constraints_rates = {
- .count = ARRAY_SIZE(samplerates),
- .list = samplerates,
- .mask = 0,
- };
- /*
- * return the index of the target rate
- */
- static int
- snd_nm256_fixed_rate(unsigned int rate)
- {
- unsigned int i;
- for (i = 0; i < ARRAY_SIZE(samplerates); i++) {
- if (rate == samplerates[i])
- return i;
- }
- snd_BUG();
- return 0;
- }
- /*
- * set sample rate and format
- */
- static void
- snd_nm256_set_format(struct nm256 *chip, struct nm256_stream *s,
- struct snd_pcm_substream *substream)
- {
- struct snd_pcm_runtime *runtime = substream->runtime;
- int rate_index = snd_nm256_fixed_rate(runtime->rate);
- unsigned char ratebits = (rate_index << 4) & NM_RATE_MASK;
- s->shift = 0;
- if (snd_pcm_format_width(runtime->format) == 16) {
- ratebits |= NM_RATE_BITS_16;
- s->shift++;
- }
- if (runtime->channels > 1) {
- ratebits |= NM_RATE_STEREO;
- s->shift++;
- }
- runtime->rate = samplerates[rate_index];
- switch (substream->stream) {
- case SNDRV_PCM_STREAM_PLAYBACK:
- snd_nm256_load_coefficient(chip, 0, rate_index); /* 0 = playback */
- snd_nm256_writeb(chip,
- NM_PLAYBACK_REG_OFFSET + NM_RATE_REG_OFFSET,
- ratebits);
- break;
- case SNDRV_PCM_STREAM_CAPTURE:
- snd_nm256_load_coefficient(chip, 1, rate_index); /* 1 = record */
- snd_nm256_writeb(chip,
- NM_RECORD_REG_OFFSET + NM_RATE_REG_OFFSET,
- ratebits);
- break;
- }
- }
- /* acquire interrupt */
- static int snd_nm256_acquire_irq(struct nm256 *chip)
- {
- mutex_lock(&chip->irq_mutex);
- if (chip->irq < 0) {
- if (request_irq(chip->pci->irq, chip->interrupt, IRQF_SHARED,
- KBUILD_MODNAME, chip)) {
- dev_err(chip->card->dev,
- "unable to grab IRQ %d\n", chip->pci->irq);
- mutex_unlock(&chip->irq_mutex);
- return -EBUSY;
- }
- chip->irq = chip->pci->irq;
- }
- chip->irq_acks++;
- mutex_unlock(&chip->irq_mutex);
- return 0;
- }
- /* release interrupt */
- static void snd_nm256_release_irq(struct nm256 *chip)
- {
- mutex_lock(&chip->irq_mutex);
- if (chip->irq_acks > 0)
- chip->irq_acks--;
- if (chip->irq_acks == 0 && chip->irq >= 0) {
- free_irq(chip->irq, chip);
- chip->irq = -1;
- }
- mutex_unlock(&chip->irq_mutex);
- }
- /*
- * start / stop
- */
- /* update the watermark (current period) */
- static void snd_nm256_pcm_mark(struct nm256 *chip, struct nm256_stream *s, int reg)
- {
- s->cur_period++;
- s->cur_period %= s->periods;
- snd_nm256_writel(chip, reg, s->buf + s->cur_period * s->period_size);
- }
- #define snd_nm256_playback_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_PBUFFER_WMARK)
- #define snd_nm256_capture_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_RBUFFER_WMARK)
- static void
- snd_nm256_playback_start(struct nm256 *chip, struct nm256_stream *s,
- struct snd_pcm_substream *substream)
- {
- /* program buffer pointers */
- snd_nm256_writel(chip, NM_PBUFFER_START, s->buf);
- snd_nm256_writel(chip, NM_PBUFFER_END, s->buf + s->dma_size - (1 << s->shift));
- snd_nm256_writel(chip, NM_PBUFFER_CURRP, s->buf);
- snd_nm256_playback_mark(chip, s);
- /* Enable playback engine and interrupts. */
- snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG,
- NM_PLAYBACK_ENABLE_FLAG | NM_PLAYBACK_FREERUN);
- /* Enable both channels. */
- snd_nm256_writew(chip, NM_AUDIO_MUTE_REG, 0x0);
- }
- static void
- snd_nm256_capture_start(struct nm256 *chip, struct nm256_stream *s,
- struct snd_pcm_substream *substream)
- {
- /* program buffer pointers */
- snd_nm256_writel(chip, NM_RBUFFER_START, s->buf);
- snd_nm256_writel(chip, NM_RBUFFER_END, s->buf + s->dma_size);
- snd_nm256_writel(chip, NM_RBUFFER_CURRP, s->buf);
- snd_nm256_capture_mark(chip, s);
- /* Enable playback engine and interrupts. */
- snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG,
- NM_RECORD_ENABLE_FLAG | NM_RECORD_FREERUN);
- }
- /* Stop the play engine. */
- static void
- snd_nm256_playback_stop(struct nm256 *chip)
- {
- /* Shut off sound from both channels. */
- snd_nm256_writew(chip, NM_AUDIO_MUTE_REG,
- NM_AUDIO_MUTE_LEFT | NM_AUDIO_MUTE_RIGHT);
- /* Disable play engine. */
- snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG, 0);
- }
- static void
- snd_nm256_capture_stop(struct nm256 *chip)
- {
- /* Disable recording engine. */
- snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG, 0);
- }
- static int
- snd_nm256_playback_trigger(struct snd_pcm_substream *substream, int cmd)
- {
- struct nm256 *chip = snd_pcm_substream_chip(substream);
- struct nm256_stream *s = substream->runtime->private_data;
- int err = 0;
- if (snd_BUG_ON(!s))
- return -ENXIO;
- spin_lock(&chip->reg_lock);
- switch (cmd) {
- case SNDRV_PCM_TRIGGER_RESUME:
- s->suspended = 0;
- /* fallthru */
- case SNDRV_PCM_TRIGGER_START:
- if (! s->running) {
- snd_nm256_playback_start(chip, s, substream);
- s->running = 1;
- }
- break;
- case SNDRV_PCM_TRIGGER_SUSPEND:
- s->suspended = 1;
- /* fallthru */
- case SNDRV_PCM_TRIGGER_STOP:
- if (s->running) {
- snd_nm256_playback_stop(chip);
- s->running = 0;
- }
- break;
- default:
- err = -EINVAL;
- break;
- }
- spin_unlock(&chip->reg_lock);
- return err;
- }
- static int
- snd_nm256_capture_trigger(struct snd_pcm_substream *substream, int cmd)
- {
- struct nm256 *chip = snd_pcm_substream_chip(substream);
- struct nm256_stream *s = substream->runtime->private_data;
- int err = 0;
- if (snd_BUG_ON(!s))
- return -ENXIO;
- spin_lock(&chip->reg_lock);
- switch (cmd) {
- case SNDRV_PCM_TRIGGER_START:
- case SNDRV_PCM_TRIGGER_RESUME:
- if (! s->running) {
- snd_nm256_capture_start(chip, s, substream);
- s->running = 1;
- }
- break;
- case SNDRV_PCM_TRIGGER_STOP:
- case SNDRV_PCM_TRIGGER_SUSPEND:
- if (s->running) {
- snd_nm256_capture_stop(chip);
- s->running = 0;
- }
- break;
- default:
- err = -EINVAL;
- break;
- }
- spin_unlock(&chip->reg_lock);
- return err;
- }
- /*
- * prepare playback/capture channel
- */
- static int snd_nm256_pcm_prepare(struct snd_pcm_substream *substream)
- {
- struct nm256 *chip = snd_pcm_substream_chip(substream);
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct nm256_stream *s = runtime->private_data;
- if (snd_BUG_ON(!s))
- return -ENXIO;
- s->dma_size = frames_to_bytes(runtime, substream->runtime->buffer_size);
- s->period_size = frames_to_bytes(runtime, substream->runtime->period_size);
- s->periods = substream->runtime->periods;
- s->cur_period = 0;
- spin_lock_irq(&chip->reg_lock);
- s->running = 0;
- snd_nm256_set_format(chip, s, substream);
- spin_unlock_irq(&chip->reg_lock);
- return 0;
- }
- /*
- * get the current pointer
- */
- static snd_pcm_uframes_t
- snd_nm256_playback_pointer(struct snd_pcm_substream *substream)
- {
- struct nm256 *chip = snd_pcm_substream_chip(substream);
- struct nm256_stream *s = substream->runtime->private_data;
- unsigned long curp;
- if (snd_BUG_ON(!s))
- return 0;
- curp = snd_nm256_readl(chip, NM_PBUFFER_CURRP) - (unsigned long)s->buf;
- curp %= s->dma_size;
- return bytes_to_frames(substream->runtime, curp);
- }
- static snd_pcm_uframes_t
- snd_nm256_capture_pointer(struct snd_pcm_substream *substream)
- {
- struct nm256 *chip = snd_pcm_substream_chip(substream);
- struct nm256_stream *s = substream->runtime->private_data;
- unsigned long curp;
- if (snd_BUG_ON(!s))
- return 0;
- curp = snd_nm256_readl(chip, NM_RBUFFER_CURRP) - (unsigned long)s->buf;
- curp %= s->dma_size;
- return bytes_to_frames(substream->runtime, curp);
- }
- /* Remapped I/O space can be accessible as pointer on i386 */
- /* This might be changed in the future */
- #ifndef __i386__
- /*
- * silence / copy for playback
- */
- static int
- snd_nm256_playback_silence(struct snd_pcm_substream *substream,
- int channel, /* not used (interleaved data) */
- snd_pcm_uframes_t pos,
- snd_pcm_uframes_t count)
- {
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct nm256_stream *s = runtime->private_data;
- count = frames_to_bytes(runtime, count);
- pos = frames_to_bytes(runtime, pos);
- memset_io(s->bufptr + pos, 0, count);
- return 0;
- }
- static int
- snd_nm256_playback_copy(struct snd_pcm_substream *substream,
- int channel, /* not used (interleaved data) */
- snd_pcm_uframes_t pos,
- void __user *src,
- snd_pcm_uframes_t count)
- {
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct nm256_stream *s = runtime->private_data;
- count = frames_to_bytes(runtime, count);
- pos = frames_to_bytes(runtime, pos);
- if (copy_from_user_toio(s->bufptr + pos, src, count))
- return -EFAULT;
- return 0;
- }
- /*
- * copy to user
- */
- static int
- snd_nm256_capture_copy(struct snd_pcm_substream *substream,
- int channel, /* not used (interleaved data) */
- snd_pcm_uframes_t pos,
- void __user *dst,
- snd_pcm_uframes_t count)
- {
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct nm256_stream *s = runtime->private_data;
- count = frames_to_bytes(runtime, count);
- pos = frames_to_bytes(runtime, pos);
- if (copy_to_user_fromio(dst, s->bufptr + pos, count))
- return -EFAULT;
- return 0;
- }
- #endif /* !__i386__ */
- /*
- * update playback/capture watermarks
- */
- /* spinlock held! */
- static void
- snd_nm256_playback_update(struct nm256 *chip)
- {
- struct nm256_stream *s;
- s = &chip->streams[SNDRV_PCM_STREAM_PLAYBACK];
- if (s->running && s->substream) {
- spin_unlock(&chip->reg_lock);
- snd_pcm_period_elapsed(s->substream);
- spin_lock(&chip->reg_lock);
- snd_nm256_playback_mark(chip, s);
- }
- }
- /* spinlock held! */
- static void
- snd_nm256_capture_update(struct nm256 *chip)
- {
- struct nm256_stream *s;
- s = &chip->streams[SNDRV_PCM_STREAM_CAPTURE];
- if (s->running && s->substream) {
- spin_unlock(&chip->reg_lock);
- snd_pcm_period_elapsed(s->substream);
- spin_lock(&chip->reg_lock);
- snd_nm256_capture_mark(chip, s);
- }
- }
- /*
- * hardware info
- */
- static struct snd_pcm_hardware snd_nm256_playback =
- {
- .info = SNDRV_PCM_INFO_MMAP_IOMEM |SNDRV_PCM_INFO_MMAP_VALID |
- SNDRV_PCM_INFO_INTERLEAVED |
- /*SNDRV_PCM_INFO_PAUSE |*/
- SNDRV_PCM_INFO_RESUME,
- .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
- .rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000,
- .rate_min = 8000,
- .rate_max = 48000,
- .channels_min = 1,
- .channels_max = 2,
- .periods_min = 2,
- .periods_max = 1024,
- .buffer_bytes_max = 128 * 1024,
- .period_bytes_min = 256,
- .period_bytes_max = 128 * 1024,
- };
- static struct snd_pcm_hardware snd_nm256_capture =
- {
- .info = SNDRV_PCM_INFO_MMAP_IOMEM | SNDRV_PCM_INFO_MMAP_VALID |
- SNDRV_PCM_INFO_INTERLEAVED |
- /*SNDRV_PCM_INFO_PAUSE |*/
- SNDRV_PCM_INFO_RESUME,
- .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
- .rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000,
- .rate_min = 8000,
- .rate_max = 48000,
- .channels_min = 1,
- .channels_max = 2,
- .periods_min = 2,
- .periods_max = 1024,
- .buffer_bytes_max = 128 * 1024,
- .period_bytes_min = 256,
- .period_bytes_max = 128 * 1024,
- };
- /* set dma transfer size */
- static int snd_nm256_pcm_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *hw_params)
- {
- /* area and addr are already set and unchanged */
- substream->runtime->dma_bytes = params_buffer_bytes(hw_params);
- return 0;
- }
- /*
- * open
- */
- static void snd_nm256_setup_stream(struct nm256 *chip, struct nm256_stream *s,
- struct snd_pcm_substream *substream,
- struct snd_pcm_hardware *hw_ptr)
- {
- struct snd_pcm_runtime *runtime = substream->runtime;
- s->running = 0;
- runtime->hw = *hw_ptr;
- runtime->hw.buffer_bytes_max = s->bufsize;
- runtime->hw.period_bytes_max = s->bufsize / 2;
- runtime->dma_area = (void __force *) s->bufptr;
- runtime->dma_addr = s->bufptr_addr;
- runtime->dma_bytes = s->bufsize;
- runtime->private_data = s;
- s->substream = substream;
- snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
- &constraints_rates);
- }
- static int
- snd_nm256_playback_open(struct snd_pcm_substream *substream)
- {
- struct nm256 *chip = snd_pcm_substream_chip(substream);
- if (snd_nm256_acquire_irq(chip) < 0)
- return -EBUSY;
- snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_PLAYBACK],
- substream, &snd_nm256_playback);
- return 0;
- }
- static int
- snd_nm256_capture_open(struct snd_pcm_substream *substream)
- {
- struct nm256 *chip = snd_pcm_substream_chip(substream);
- if (snd_nm256_acquire_irq(chip) < 0)
- return -EBUSY;
- snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_CAPTURE],
- substream, &snd_nm256_capture);
- return 0;
- }
- /*
- * close - we don't have to do special..
- */
- static int
- snd_nm256_playback_close(struct snd_pcm_substream *substream)
- {
- struct nm256 *chip = snd_pcm_substream_chip(substream);
- snd_nm256_release_irq(chip);
- return 0;
- }
- static int
- snd_nm256_capture_close(struct snd_pcm_substream *substream)
- {
- struct nm256 *chip = snd_pcm_substream_chip(substream);
- snd_nm256_release_irq(chip);
- return 0;
- }
- /*
- * create a pcm instance
- */
- static struct snd_pcm_ops snd_nm256_playback_ops = {
- .open = snd_nm256_playback_open,
- .close = snd_nm256_playback_close,
- .ioctl = snd_pcm_lib_ioctl,
- .hw_params = snd_nm256_pcm_hw_params,
- .prepare = snd_nm256_pcm_prepare,
- .trigger = snd_nm256_playback_trigger,
- .pointer = snd_nm256_playback_pointer,
- #ifndef __i386__
- .copy = snd_nm256_playback_copy,
- .silence = snd_nm256_playback_silence,
- #endif
- .mmap = snd_pcm_lib_mmap_iomem,
- };
- static struct snd_pcm_ops snd_nm256_capture_ops = {
- .open = snd_nm256_capture_open,
- .close = snd_nm256_capture_close,
- .ioctl = snd_pcm_lib_ioctl,
- .hw_params = snd_nm256_pcm_hw_params,
- .prepare = snd_nm256_pcm_prepare,
- .trigger = snd_nm256_capture_trigger,
- .pointer = snd_nm256_capture_pointer,
- #ifndef __i386__
- .copy = snd_nm256_capture_copy,
- #endif
- .mmap = snd_pcm_lib_mmap_iomem,
- };
- static int
- snd_nm256_pcm(struct nm256 *chip, int device)
- {
- struct snd_pcm *pcm;
- int i, err;
- for (i = 0; i < 2; i++) {
- struct nm256_stream *s = &chip->streams[i];
- s->bufptr = chip->buffer + (s->buf - chip->buffer_start);
- s->bufptr_addr = chip->buffer_addr + (s->buf - chip->buffer_start);
- }
- err = snd_pcm_new(chip->card, chip->card->driver, device,
- 1, 1, &pcm);
- if (err < 0)
- return err;
- snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_nm256_playback_ops);
- snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_nm256_capture_ops);
- pcm->private_data = chip;
- pcm->info_flags = 0;
- chip->pcm = pcm;
- return 0;
- }
- /*
- * Initialize the hardware.
- */
- static void
- snd_nm256_init_chip(struct nm256 *chip)
- {
- /* Reset everything. */
- snd_nm256_writeb(chip, 0x0, 0x11);
- snd_nm256_writew(chip, 0x214, 0);
- /* stop sounds.. */
- //snd_nm256_playback_stop(chip);
- //snd_nm256_capture_stop(chip);
- }
- static irqreturn_t
- snd_nm256_intr_check(struct nm256 *chip)
- {
- if (chip->badintrcount++ > 1000) {
- /*
- * I'm not sure if the best thing is to stop the card from
- * playing or just release the interrupt (after all, we're in
- * a bad situation, so doing fancy stuff may not be such a good
- * idea).
- *
- * I worry about the card engine continuing to play noise
- * over and over, however--that could become a very
- * obnoxious problem. And we know that when this usually
- * happens things are fairly safe, it just means the user's
- * inserted a PCMCIA card and someone's spamming us with IRQ 9s.
- */
- if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running)
- snd_nm256_playback_stop(chip);
- if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running)
- snd_nm256_capture_stop(chip);
- chip->badintrcount = 0;
- return IRQ_HANDLED;
- }
- return IRQ_NONE;
- }
- /*
- * Handle a potential interrupt for the device referred to by DEV_ID.
- *
- * I don't like the cut-n-paste job here either between the two routines,
- * but there are sufficient differences between the two interrupt handlers
- * that parameterizing it isn't all that great either. (Could use a macro,
- * I suppose...yucky bleah.)
- */
- static irqreturn_t
- snd_nm256_interrupt(int irq, void *dev_id)
- {
- struct nm256 *chip = dev_id;
- u16 status;
- u8 cbyte;
- status = snd_nm256_readw(chip, NM_INT_REG);
- /* Not ours. */
- if (status == 0)
- return snd_nm256_intr_check(chip);
- chip->badintrcount = 0;
- /* Rather boring; check for individual interrupts and process them. */
- spin_lock(&chip->reg_lock);
- if (status & NM_PLAYBACK_INT) {
- status &= ~NM_PLAYBACK_INT;
- NM_ACK_INT(chip, NM_PLAYBACK_INT);
- snd_nm256_playback_update(chip);
- }
- if (status & NM_RECORD_INT) {
- status &= ~NM_RECORD_INT;
- NM_ACK_INT(chip, NM_RECORD_INT);
- snd_nm256_capture_update(chip);
- }
- if (status & NM_MISC_INT_1) {
- status &= ~NM_MISC_INT_1;
- NM_ACK_INT(chip, NM_MISC_INT_1);
- dev_dbg(chip->card->dev, "NM256: Got misc interrupt #1\n");
- snd_nm256_writew(chip, NM_INT_REG, 0x8000);
- cbyte = snd_nm256_readb(chip, 0x400);
- snd_nm256_writeb(chip, 0x400, cbyte | 2);
- }
- if (status & NM_MISC_INT_2) {
- status &= ~NM_MISC_INT_2;
- NM_ACK_INT(chip, NM_MISC_INT_2);
- dev_dbg(chip->card->dev, "NM256: Got misc interrupt #2\n");
- cbyte = snd_nm256_readb(chip, 0x400);
- snd_nm256_writeb(chip, 0x400, cbyte & ~2);
- }
- /* Unknown interrupt. */
- if (status) {
- dev_dbg(chip->card->dev,
- "NM256: Fire in the hole! Unknown status 0x%x\n",
- status);
- /* Pray. */
- NM_ACK_INT(chip, status);
- }
- spin_unlock(&chip->reg_lock);
- return IRQ_HANDLED;
- }
- /*
- * Handle a potential interrupt for the device referred to by DEV_ID.
- * This handler is for the 256ZX, and is very similar to the non-ZX
- * routine.
- */
- static irqreturn_t
- snd_nm256_interrupt_zx(int irq, void *dev_id)
- {
- struct nm256 *chip = dev_id;
- u32 status;
- u8 cbyte;
- status = snd_nm256_readl(chip, NM_INT_REG);
- /* Not ours. */
- if (status == 0)
- return snd_nm256_intr_check(chip);
- chip->badintrcount = 0;
- /* Rather boring; check for individual interrupts and process them. */
- spin_lock(&chip->reg_lock);
- if (status & NM2_PLAYBACK_INT) {
- status &= ~NM2_PLAYBACK_INT;
- NM2_ACK_INT(chip, NM2_PLAYBACK_INT);
- snd_nm256_playback_update(chip);
- }
- if (status & NM2_RECORD_INT) {
- status &= ~NM2_RECORD_INT;
- NM2_ACK_INT(chip, NM2_RECORD_INT);
- snd_nm256_capture_update(chip);
- }
- if (status & NM2_MISC_INT_1) {
- status &= ~NM2_MISC_INT_1;
- NM2_ACK_INT(chip, NM2_MISC_INT_1);
- dev_dbg(chip->card->dev, "NM256: Got misc interrupt #1\n");
- cbyte = snd_nm256_readb(chip, 0x400);
- snd_nm256_writeb(chip, 0x400, cbyte | 2);
- }
- if (status & NM2_MISC_INT_2) {
- status &= ~NM2_MISC_INT_2;
- NM2_ACK_INT(chip, NM2_MISC_INT_2);
- dev_dbg(chip->card->dev, "NM256: Got misc interrupt #2\n");
- cbyte = snd_nm256_readb(chip, 0x400);
- snd_nm256_writeb(chip, 0x400, cbyte & ~2);
- }
- /* Unknown interrupt. */
- if (status) {
- dev_dbg(chip->card->dev,
- "NM256: Fire in the hole! Unknown status 0x%x\n",
- status);
- /* Pray. */
- NM2_ACK_INT(chip, status);
- }
- spin_unlock(&chip->reg_lock);
- return IRQ_HANDLED;
- }
- /*
- * AC97 interface
- */
- /*
- * Waits for the mixer to become ready to be written; returns a zero value
- * if it timed out.
- */
- static int
- snd_nm256_ac97_ready(struct nm256 *chip)
- {
- int timeout = 10;
- u32 testaddr;
- u16 testb;
- testaddr = chip->mixer_status_offset;
- testb = chip->mixer_status_mask;
- /*
- * Loop around waiting for the mixer to become ready.
- */
- while (timeout-- > 0) {
- if ((snd_nm256_readw(chip, testaddr) & testb) == 0)
- return 1;
- udelay(100);
- }
- return 0;
- }
- /*
- * Initial register values to be written to the AC97 mixer.
- * While most of these are identical to the reset values, we do this
- * so that we have most of the register contents cached--this avoids
- * reading from the mixer directly (which seems to be problematic,
- * probably due to ignorance).
- */
- struct initialValues {
- unsigned short reg;
- unsigned short value;
- };
- static struct initialValues nm256_ac97_init_val[] =
- {
- { AC97_MASTER, 0x8000 },
- { AC97_HEADPHONE, 0x8000 },
- { AC97_MASTER_MONO, 0x8000 },
- { AC97_PC_BEEP, 0x8000 },
- { AC97_PHONE, 0x8008 },
- { AC97_MIC, 0x8000 },
- { AC97_LINE, 0x8808 },
- { AC97_CD, 0x8808 },
- { AC97_VIDEO, 0x8808 },
- { AC97_AUX, 0x8808 },
- { AC97_PCM, 0x8808 },
- { AC97_REC_SEL, 0x0000 },
- { AC97_REC_GAIN, 0x0B0B },
- { AC97_GENERAL_PURPOSE, 0x0000 },
- { AC97_3D_CONTROL, 0x8000 },
- { AC97_VENDOR_ID1, 0x8384 },
- { AC97_VENDOR_ID2, 0x7609 },
- };
- static int nm256_ac97_idx(unsigned short reg)
- {
- int i;
- for (i = 0; i < ARRAY_SIZE(nm256_ac97_init_val); i++)
- if (nm256_ac97_init_val[i].reg == reg)
- return i;
- return -1;
- }
- /*
- * some nm256 easily crash when reading from mixer registers
- * thus we're treating it as a write-only mixer and cache the
- * written values
- */
- static unsigned short
- snd_nm256_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
- {
- struct nm256 *chip = ac97->private_data;
- int idx = nm256_ac97_idx(reg);
- if (idx < 0)
- return 0;
- return chip->ac97_regs[idx];
- }
- /*
- */
- static void
- snd_nm256_ac97_write(struct snd_ac97 *ac97,
- unsigned short reg, unsigned short val)
- {
- struct nm256 *chip = ac97->private_data;
- int tries = 2;
- int idx = nm256_ac97_idx(reg);
- u32 base;
- if (idx < 0)
- return;
- base = chip->mixer_base;
- snd_nm256_ac97_ready(chip);
- /* Wait for the write to take, too. */
- while (tries-- > 0) {
- snd_nm256_writew(chip, base + reg, val);
- msleep(1); /* a little delay here seems better.. */
- if (snd_nm256_ac97_ready(chip)) {
- /* successful write: set cache */
- chip->ac97_regs[idx] = val;
- return;
- }
- }
- dev_dbg(chip->card->dev, "nm256: ac97 codec not ready..\n");
- }
- /* static resolution table */
- static struct snd_ac97_res_table nm256_res_table[] = {
- { AC97_MASTER, 0x1f1f },
- { AC97_HEADPHONE, 0x1f1f },
- { AC97_MASTER_MONO, 0x001f },
- { AC97_PC_BEEP, 0x001f },
- { AC97_PHONE, 0x001f },
- { AC97_MIC, 0x001f },
- { AC97_LINE, 0x1f1f },
- { AC97_CD, 0x1f1f },
- { AC97_VIDEO, 0x1f1f },
- { AC97_AUX, 0x1f1f },
- { AC97_PCM, 0x1f1f },
- { AC97_REC_GAIN, 0x0f0f },
- { } /* terminator */
- };
- /* initialize the ac97 into a known state */
- static void
- snd_nm256_ac97_reset(struct snd_ac97 *ac97)
- {
- struct nm256 *chip = ac97->private_data;
- /* Reset the mixer. 'Tis magic! */
- snd_nm256_writeb(chip, 0x6c0, 1);
- if (! chip->reset_workaround) {
- /* Dell latitude LS will lock up by this */
- snd_nm256_writeb(chip, 0x6cc, 0x87);
- }
- if (! chip->reset_workaround_2) {
- /* Dell latitude CSx will lock up by this */
- snd_nm256_writeb(chip, 0x6cc, 0x80);
- snd_nm256_writeb(chip, 0x6cc, 0x0);
- }
- if (! chip->in_resume) {
- int i;
- for (i = 0; i < ARRAY_SIZE(nm256_ac97_init_val); i++) {
- /* preload the cache, so as to avoid even a single
- * read of the mixer regs
- */
- snd_nm256_ac97_write(ac97, nm256_ac97_init_val[i].reg,
- nm256_ac97_init_val[i].value);
- }
- }
- }
- /* create an ac97 mixer interface */
- static int
- snd_nm256_mixer(struct nm256 *chip)
- {
- struct snd_ac97_bus *pbus;
- struct snd_ac97_template ac97;
- int err;
- static struct snd_ac97_bus_ops ops = {
- .reset = snd_nm256_ac97_reset,
- .write = snd_nm256_ac97_write,
- .read = snd_nm256_ac97_read,
- };
- chip->ac97_regs = kcalloc(ARRAY_SIZE(nm256_ac97_init_val),
- sizeof(short), GFP_KERNEL);
- if (! chip->ac97_regs)
- return -ENOMEM;
- if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
- return err;
- memset(&ac97, 0, sizeof(ac97));
- ac97.scaps = AC97_SCAP_AUDIO; /* we support audio! */
- ac97.private_data = chip;
- ac97.res_table = nm256_res_table;
- pbus->no_vra = 1;
- err = snd_ac97_mixer(pbus, &ac97, &chip->ac97);
- if (err < 0)
- return err;
- if (! (chip->ac97->id & (0xf0000000))) {
- /* looks like an invalid id */
- sprintf(chip->card->mixername, "%s AC97", chip->card->driver);
- }
- return 0;
- }
- /*
- * See if the signature left by the NM256 BIOS is intact; if so, we use
- * the associated address as the end of our audio buffer in the video
- * RAM.
- */
- static int
- snd_nm256_peek_for_sig(struct nm256 *chip)
- {
- /* The signature is located 1K below the end of video RAM. */
- void __iomem *temp;
- /* Default buffer end is 5120 bytes below the top of RAM. */
- unsigned long pointer_found = chip->buffer_end - 0x1400;
- u32 sig;
- temp = ioremap_nocache(chip->buffer_addr + chip->buffer_end - 0x400, 16);
- if (temp == NULL) {
- dev_err(chip->card->dev,
- "Unable to scan for card signature in video RAM\n");
- return -EBUSY;
- }
- sig = readl(temp);
- if ((sig & NM_SIG_MASK) == NM_SIGNATURE) {
- u32 pointer = readl(temp + 4);
- /*
- * If it's obviously invalid, don't use it
- */
- if (pointer == 0xffffffff ||
- pointer < chip->buffer_size ||
- pointer > chip->buffer_end) {
- dev_err(chip->card->dev,
- "invalid signature found: 0x%x\n", pointer);
- iounmap(temp);
- return -ENODEV;
- } else {
- pointer_found = pointer;
- dev_info(chip->card->dev,
- "found card signature in video RAM: 0x%x\n",
- pointer);
- }
- }
- iounmap(temp);
- chip->buffer_end = pointer_found;
- return 0;
- }
- #ifdef CONFIG_PM_SLEEP
- /*
- * APM event handler, so the card is properly reinitialized after a power
- * event.
- */
- static int nm256_suspend(struct device *dev)
- {
- struct snd_card *card = dev_get_drvdata(dev);
- struct nm256 *chip = card->private_data;
- snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
- snd_pcm_suspend_all(chip->pcm);
- snd_ac97_suspend(chip->ac97);
- chip->coeffs_current = 0;
- return 0;
- }
- static int nm256_resume(struct device *dev)
- {
- struct snd_card *card = dev_get_drvdata(dev);
- struct nm256 *chip = card->private_data;
- int i;
- /* Perform a full reset on the hardware */
- chip->in_resume = 1;
- snd_nm256_init_chip(chip);
- /* restore ac97 */
- snd_ac97_resume(chip->ac97);
- for (i = 0; i < 2; i++) {
- struct nm256_stream *s = &chip->streams[i];
- if (s->substream && s->suspended) {
- spin_lock_irq(&chip->reg_lock);
- snd_nm256_set_format(chip, s, s->substream);
- spin_unlock_irq(&chip->reg_lock);
- }
- }
- snd_power_change_state(card, SNDRV_CTL_POWER_D0);
- chip->in_resume = 0;
- return 0;
- }
- static SIMPLE_DEV_PM_OPS(nm256_pm, nm256_suspend, nm256_resume);
- #define NM256_PM_OPS &nm256_pm
- #else
- #define NM256_PM_OPS NULL
- #endif /* CONFIG_PM_SLEEP */
- static int snd_nm256_free(struct nm256 *chip)
- {
- if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running)
- snd_nm256_playback_stop(chip);
- if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running)
- snd_nm256_capture_stop(chip);
- if (chip->irq >= 0)
- free_irq(chip->irq, chip);
- iounmap(chip->cport);
- iounmap(chip->buffer);
- release_and_free_resource(chip->res_cport);
- release_and_free_resource(chip->res_buffer);
- pci_disable_device(chip->pci);
- kfree(chip->ac97_regs);
- kfree(chip);
- return 0;
- }
- static int snd_nm256_dev_free(struct snd_device *device)
- {
- struct nm256 *chip = device->device_data;
- return snd_nm256_free(chip);
- }
- static int
- snd_nm256_create(struct snd_card *card, struct pci_dev *pci,
- struct nm256 **chip_ret)
- {
- struct nm256 *chip;
- int err, pval;
- static struct snd_device_ops ops = {
- .dev_free = snd_nm256_dev_free,
- };
- u32 addr;
- *chip_ret = NULL;
- if ((err = pci_enable_device(pci)) < 0)
- return err;
- chip = kzalloc(sizeof(*chip), GFP_KERNEL);
- if (chip == NULL) {
- pci_disable_device(pci);
- return -ENOMEM;
- }
- chip->card = card;
- chip->pci = pci;
- chip->use_cache = use_cache;
- spin_lock_init(&chip->reg_lock);
- chip->irq = -1;
- mutex_init(&chip->irq_mutex);
- /* store buffer sizes in bytes */
- chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize = playback_bufsize * 1024;
- chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize = capture_bufsize * 1024;
- /*
- * The NM256 has two memory ports. The first port is nothing
- * more than a chunk of video RAM, which is used as the I/O ring
- * buffer. The second port has the actual juicy stuff (like the
- * mixer and the playback engine control registers).
- */
- chip->buffer_addr = pci_resource_start(pci, 0);
- chip->cport_addr = pci_resource_start(pci, 1);
- /* Init the memory port info. */
- /* remap control port (#2) */
- chip->res_cport = request_mem_region(chip->cport_addr, NM_PORT2_SIZE,
- card->driver);
- if (chip->res_cport == NULL) {
- dev_err(card->dev, "memory region 0x%lx (size 0x%x) busy\n",
- chip->cport_addr, NM_PORT2_SIZE);
- err = -EBUSY;
- goto __error;
- }
- chip->cport = ioremap_nocache(chip->cport_addr, NM_PORT2_SIZE);
- if (chip->cport == NULL) {
- dev_err(card->dev, "unable to map control port %lx\n",
- chip->cport_addr);
- err = -ENOMEM;
- goto __error;
- }
- if (!strcmp(card->driver, "NM256AV")) {
- /* Ok, try to see if this is a non-AC97 version of the hardware. */
- pval = snd_nm256_readw(chip, NM_MIXER_PRESENCE);
- if ((pval & NM_PRESENCE_MASK) != NM_PRESENCE_VALUE) {
- if (! force_ac97) {
- dev_err(card->dev,
- "no ac97 is found!\n");
- dev_err(card->dev,
- "force the driver to load by passing in the module parameter\n");
- dev_err(card->dev,
- " force_ac97=1\n");
- dev_err(card->dev,
- "or try sb16, opl3sa2, or cs423x drivers instead.\n");
- err = -ENXIO;
- goto __error;
- }
- }
- chip->buffer_end = 2560 * 1024;
- chip->interrupt = snd_nm256_interrupt;
- chip->mixer_status_offset = NM_MIXER_STATUS_OFFSET;
- chip->mixer_status_mask = NM_MIXER_READY_MASK;
- } else {
- /* Not sure if there is any relevant detect for the ZX or not. */
- if (snd_nm256_readb(chip, 0xa0b) != 0)
- chip->buffer_end = 6144 * 1024;
- else
- chip->buffer_end = 4096 * 1024;
- chip->interrupt = snd_nm256_interrupt_zx;
- chip->mixer_status_offset = NM2_MIXER_STATUS_OFFSET;
- chip->mixer_status_mask = NM2_MIXER_READY_MASK;
- }
-
- chip->buffer_size = chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize +
- chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize;
- if (chip->use_cache)
- chip->buffer_size += NM_TOTAL_COEFF_COUNT * 4;
- else
- chip->buffer_size += NM_MAX_PLAYBACK_COEF_SIZE + NM_MAX_RECORD_COEF_SIZE;
- if (buffer_top >= chip->buffer_size && buffer_top < chip->buffer_end)
- chip->buffer_end = buffer_top;
- else {
- /* get buffer end pointer from signature */
- if ((err = snd_nm256_peek_for_sig(chip)) < 0)
- goto __error;
- }
- chip->buffer_start = chip->buffer_end - chip->buffer_size;
- chip->buffer_addr += chip->buffer_start;
- dev_info(card->dev, "Mapping port 1 from 0x%x - 0x%x\n",
- chip->buffer_start, chip->buffer_end);
- chip->res_buffer = request_mem_region(chip->buffer_addr,
- chip->buffer_size,
- card->driver);
- if (chip->res_buffer == NULL) {
- dev_err(card->dev, "buffer 0x%lx (size 0x%x) busy\n",
- chip->buffer_addr, chip->buffer_size);
- err = -EBUSY;
- goto __error;
- }
- chip->buffer = ioremap_nocache(chip->buffer_addr, chip->buffer_size);
- if (chip->buffer == NULL) {
- err = -ENOMEM;
- dev_err(card->dev, "unable to map ring buffer at %lx\n",
- chip->buffer_addr);
- goto __error;
- }
- /* set offsets */
- addr = chip->buffer_start;
- chip->streams[SNDRV_PCM_STREAM_PLAYBACK].buf = addr;
- addr += chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize;
- chip->streams[SNDRV_PCM_STREAM_CAPTURE].buf = addr;
- addr += chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize;
- if (chip->use_cache) {
- chip->all_coeff_buf = addr;
- } else {
- chip->coeff_buf[SNDRV_PCM_STREAM_PLAYBACK] = addr;
- addr += NM_MAX_PLAYBACK_COEF_SIZE;
- chip->coeff_buf[SNDRV_PCM_STREAM_CAPTURE] = addr;
- }
- /* Fixed setting. */
- chip->mixer_base = NM_MIXER_OFFSET;
- chip->coeffs_current = 0;
- snd_nm256_init_chip(chip);
- // pci_set_master(pci); /* needed? */
-
- if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
- goto __error;
- *chip_ret = chip;
- return 0;
- __error:
- snd_nm256_free(chip);
- return err;
- }
- enum { NM_BLACKLISTED, NM_RESET_WORKAROUND, NM_RESET_WORKAROUND_2 };
- static struct snd_pci_quirk nm256_quirks[] = {
- /* HP omnibook 4150 has cs4232 codec internally */
- SND_PCI_QUIRK(0x103c, 0x0007, "HP omnibook 4150", NM_BLACKLISTED),
- /* Reset workarounds to avoid lock-ups */
- SND_PCI_QUIRK(0x104d, 0x8041, "Sony PCG-F305", NM_RESET_WORKAROUND),
- SND_PCI_QUIRK(0x1028, 0x0080, "Dell Latitude LS", NM_RESET_WORKAROUND),
- SND_PCI_QUIRK(0x1028, 0x0091, "Dell Latitude CSx", NM_RESET_WORKAROUND_2),
- { } /* terminator */
- };
- static int snd_nm256_probe(struct pci_dev *pci,
- const struct pci_device_id *pci_id)
- {
- struct snd_card *card;
- struct nm256 *chip;
- int err;
- const struct snd_pci_quirk *q;
- q = snd_pci_quirk_lookup(pci, nm256_quirks);
- if (q) {
- dev_dbg(&pci->dev, "Enabled quirk for %s.\n",
- snd_pci_quirk_name(q));
- switch (q->value) {
- case NM_BLACKLISTED:
- dev_info(&pci->dev,
- "The device is blacklisted. Loading stopped\n");
- return -ENODEV;
- case NM_RESET_WORKAROUND_2:
- reset_workaround_2 = 1;
- /* Fall-through */
- case NM_RESET_WORKAROUND:
- reset_workaround = 1;
- break;
- }
- }
- err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
- if (err < 0)
- return err;
- switch (pci->device) {
- case PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO:
- strcpy(card->driver, "NM256AV");
- break;
- case PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO:
- strcpy(card->driver, "NM256ZX");
- break;
- case PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO:
- strcpy(card->driver, "NM256XL+");
- break;
- default:
- dev_err(&pci->dev, "invalid device id 0x%x\n", pci->device);
- snd_card_free(card);
- return -EINVAL;
- }
- if (vaio_hack)
- buffer_top = 0x25a800; /* this avoids conflicts with XFree86 server */
- if (playback_bufsize < 4)
- playback_bufsize = 4;
- if (playback_bufsize > 128)
- playback_bufsize = 128;
- if (capture_bufsize < 4)
- capture_bufsize = 4;
- if (capture_bufsize > 128)
- capture_bufsize = 128;
- if ((err = snd_nm256_create(card, pci, &chip)) < 0) {
- snd_card_free(card);
- return err;
- }
- card->private_data = chip;
- if (reset_workaround) {
- dev_dbg(&pci->dev, "reset_workaround activated\n");
- chip->reset_workaround = 1;
- }
- if (reset_workaround_2) {
- dev_dbg(&pci->dev, "reset_workaround_2 activated\n");
- chip->reset_workaround_2 = 1;
- }
- if ((err = snd_nm256_pcm(chip, 0)) < 0 ||
- (err = snd_nm256_mixer(chip)) < 0) {
- snd_card_free(card);
- return err;
- }
- sprintf(card->shortname, "NeoMagic %s", card->driver);
- sprintf(card->longname, "%s at 0x%lx & 0x%lx, irq %d",
- card->shortname,
- chip->buffer_addr, chip->cport_addr, chip->irq);
- if ((err = snd_card_register(card)) < 0) {
- snd_card_free(card);
- return err;
- }
- pci_set_drvdata(pci, card);
- return 0;
- }
- static void snd_nm256_remove(struct pci_dev *pci)
- {
- snd_card_free(pci_get_drvdata(pci));
- }
- static struct pci_driver nm256_driver = {
- .name = KBUILD_MODNAME,
- .id_table = snd_nm256_ids,
- .probe = snd_nm256_probe,
- .remove = snd_nm256_remove,
- .driver = {
- .pm = NM256_PM_OPS,
- },
- };
- module_pci_driver(nm256_driver);
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