| /* |
| * 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 <sound/driver.h> |
| #include <asm/io.h> |
| #include <linux/delay.h> |
| #include <linux/interrupt.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <sound/core.h> |
| #include <sound/info.h> |
| #include <sound/control.h> |
| #include <sound/pcm.h> |
| #include <sound/ac97_codec.h> |
| #define SNDRV_GET_ID |
| #include <sound/initval.h> |
| |
| #define CARD_NAME "NeoMagic 256AV/ZX" |
| #define DRIVER_NAME "NM256" |
| |
| EXPORT_NO_SYMBOLS; |
| |
| MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); |
| MODULE_DESCRIPTION("NeoMagic NM256AV/ZX"); |
| MODULE_LICENSE("GPL"); |
| MODULE_CLASSES("{sound}"); |
| MODULE_DEVICES("{{NeoMagic,NM256AV}," |
| "{NeoMagic,NM256ZX}}"); |
| |
| /* |
| * some compile conditions. |
| */ |
| |
| static int snd_index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ |
| static char *snd_id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ |
| static int snd_enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; |
| static int snd_playback_bufsize[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 16}; |
| static int snd_capture_bufsize[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 16}; |
| static int snd_force_ac97[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0}; /* disabled as default */ |
| static int snd_buffer_top[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0}; /* not specified */ |
| static int snd_use_cache[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0}; /* disabled */ |
| static int snd_vaio_hack[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0}; /* disabled */ |
| |
| MODULE_PARM(snd_index, "1-" __MODULE_STRING(SNDRV_CARDS) "i"); |
| MODULE_PARM_DESC(snd_index, "Index value for " CARD_NAME " soundcard."); |
| MODULE_PARM_SYNTAX(snd_index, SNDRV_INDEX_DESC); |
| MODULE_PARM(snd_id, "1-" __MODULE_STRING(SNDRV_CARDS) "s"); |
| MODULE_PARM_DESC(snd_id, "ID string for " CARD_NAME " soundcard."); |
| MODULE_PARM_SYNTAX(snd_id, SNDRV_ID_DESC); |
| MODULE_PARM(snd_enable, "1-" __MODULE_STRING(SNDRV_CARDS) "i"); |
| MODULE_PARM_DESC(snd_enable, "Enable this soundcard."); |
| MODULE_PARM_SYNTAX(snd_enable, SNDRV_ENABLE_DESC); |
| MODULE_PARM(snd_playback_bufsize, "1-" __MODULE_STRING(SNDRV_CARDS) "i"); |
| MODULE_PARM_DESC(snd_playback_bufsize, "DAC frame size in kB for " CARD_NAME " soundcard."); |
| MODULE_PARM_SYNTAX(snd_playback_bufsize, SNDRV_ENABLED); |
| MODULE_PARM(snd_capture_bufsize, "1-" __MODULE_STRING(SNDRV_CARDS) "i"); |
| MODULE_PARM_DESC(snd_capture_bufsize, "ADC frame size in kB for " CARD_NAME " soundcard."); |
| MODULE_PARM_SYNTAX(snd_capture_bufsize, SNDRV_ENABLED); |
| MODULE_PARM(snd_force_ac97, "1-" __MODULE_STRING(SNDRV_CARDS) "i"); |
| MODULE_PARM_DESC(snd_force_ac97, "Force to use AC97 codec for " CARD_NAME " soundcard."); |
| MODULE_PARM_SYNTAX(snd_force_ac97, SNDRV_ENABLED "," SNDRV_BOOLEAN_FALSE_DESC); |
| MODULE_PARM(snd_buffer_top, "1-" __MODULE_STRING(SNDRV_CARDS) "i"); |
| MODULE_PARM_DESC(snd_buffer_top, "Set the top address of audio buffer for " CARD_NAME " soundcard."); |
| MODULE_PARM_SYNTAX(snd_buffer_top, SNDRV_ENABLED); |
| MODULE_PARM(snd_use_cache, "1-" __MODULE_STRING(SNDRV_CARDS) "i"); |
| MODULE_PARM_DESC(snd_use_cache, "Enable the cache for coefficient table access."); |
| MODULE_PARM_SYNTAX(snd_use_cache, SNDRV_ENABLED "," SNDRV_BOOLEAN_FALSE_DESC); |
| MODULE_PARM(snd_vaio_hack, "1-" __MODULE_STRING(SNDRV_CARDS) "i"); |
| MODULE_PARM_DESC(snd_vaio_hack, "Enable workaround for Sony VAIO notebooks."); |
| MODULE_PARM_SYNTAX(snd_vaio_hack, SNDRV_ENABLED "," SNDRV_BOOLEAN_FALSE_DESC); |
| |
| /* |
| * 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) |
| |
| /* |
| * type definitions |
| */ |
| |
| typedef struct snd_nm256 nm256_t; |
| typedef struct snd_nm256_stream nm256_stream_t; |
| #define chip_t nm256_t |
| |
| struct snd_nm256_stream { |
| |
| nm256_t *chip; |
| snd_pcm_substream_t *substream; |
| int running; |
| |
| u32 buf; /* offset from chip->buffer */ |
| int bufsize; /* buffer size in bytes */ |
| unsigned long 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 snd_nm256 { |
| |
| snd_card_t *card; |
| |
| unsigned long cport; /* control port */ |
| struct resource *res_cport; /* its resource */ |
| unsigned long cport_addr; /* physical address */ |
| |
| unsigned long 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 */ |
| |
| int coeffs_current; /* coeff. table is loaded? */ |
| int use_cache; /* use one big coef. table */ |
| |
| 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; |
| void (*interrupt)(int, void *, struct pt_regs *); |
| int badintrcount; /* counter to check bogus interrupts */ |
| |
| nm256_stream_t streams[2]; |
| |
| ac97_t *ac97; |
| |
| snd_pcm_t *pcm; |
| |
| struct pci_dev *pci; |
| |
| spinlock_t reg_lock; |
| |
| }; |
| |
| |
| /* |
| * include coefficient table |
| */ |
| #include "nm256_coef.c" |
| |
| |
| /* |
| * PCI ids |
| */ |
| |
| #ifndef PCI_VENDOR_ID_NEOMAGIC |
| #define PCI_VENDOR_ID_NEOMEGIC 0x10c8 |
| #endif |
| #ifndef PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO |
| #define PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO 0x8005 |
| #endif |
| #ifndef PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO |
| #define PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO 0x8006 |
| #endif |
| |
| |
| static struct pci_device_id snd_nm256_ids[] __devinitdata = { |
| {PCI_VENDOR_ID_NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
| {PCI_VENDOR_ID_NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
| {0,}, |
| }; |
| |
| MODULE_DEVICE_TABLE(pci, snd_nm256_ids); |
| |
| |
| /* |
| * lowlvel stuffs |
| */ |
| |
| inline static u8 |
| snd_nm256_readb(nm256_t *chip, int offset) |
| { |
| return readb(chip->cport + offset); |
| } |
| |
| inline static u16 |
| snd_nm256_readw(nm256_t *chip, int offset) |
| { |
| return readw(chip->cport + offset); |
| } |
| |
| inline static u32 |
| snd_nm256_readl(nm256_t *chip, int offset) |
| { |
| return readl(chip->cport + offset); |
| } |
| |
| inline static void |
| snd_nm256_writeb(nm256_t *chip, int offset, u8 val) |
| { |
| writeb(val, chip->cport + offset); |
| } |
| |
| inline static void |
| snd_nm256_writew(nm256_t *chip, int offset, u16 val) |
| { |
| writew(val, chip->cport + offset); |
| } |
| |
| inline static void |
| snd_nm256_writel(nm256_t *chip, int offset, u32 val) |
| { |
| writel(val, chip->cport + offset); |
| } |
| |
| inline static void |
| snd_nm256_write_buffer(nm256_t *chip, void *src, int offset, int size) |
| { |
| offset -= chip->buffer_start; |
| #ifdef SNDRV_CONFIG_DEBUG |
| if (offset < 0 || offset >= chip->buffer_size) { |
| printk("nm256: 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(nm256_t *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(nm256_t *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) { |
| snd_printd("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 int samplerates[8] = { |
| 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000, |
| }; |
| #define NUM_SAMPLERATES (sizeof(samplerates) / sizeof(samplerates[0])) |
| static snd_pcm_hw_constraint_list_t constraints_rates = { |
| count: NUM_SAMPLERATES, |
| list: samplerates, |
| mask: 0, |
| }; |
| |
| /* |
| * return the index of the target rate |
| */ |
| static int |
| snd_nm256_fixed_rate(int rate) |
| { |
| int i; |
| for (i = 0; i < NUM_SAMPLERATES; i++) { |
| if (rate == samplerates[i]) |
| return i; |
| } |
| snd_BUG(); |
| return 0; |
| } |
| |
| /* |
| * set sample rate and format |
| */ |
| static void |
| snd_nm256_set_format(nm256_t *chip, nm256_stream_t *s, snd_pcm_substream_t *substream) |
| { |
| snd_pcm_runtime_t *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; |
| } |
| } |
| |
| /* |
| * start / stop |
| */ |
| |
| /* update the watermark (current period) */ |
| static void snd_nm256_pcm_mark(nm256_t *chip, nm256_stream_t *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(nm256_t *chip, nm256_stream_t *s, snd_pcm_substream_t *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(nm256_t *chip, nm256_stream_t *s, snd_pcm_substream_t *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(nm256_t *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(nm256_t *chip) |
| { |
| /* Disable recording engine. */ |
| snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG, 0); |
| } |
| |
| static int |
| snd_nm256_playback_trigger(snd_pcm_substream_t *substream, int cmd) |
| { |
| nm256_t *chip = snd_pcm_substream_chip(substream); |
| nm256_stream_t *s = (nm256_stream_t*)substream->runtime->private_data; |
| unsigned long flags; |
| int err = 0; |
| |
| snd_assert(s != NULL, return -ENXIO); |
| |
| spin_lock_irqsave(&chip->reg_lock, flags); |
| switch (cmd) { |
| case SNDRV_PCM_TRIGGER_START: |
| case SNDRV_PCM_TRIGGER_RESUME: |
| if (! s->running) { |
| snd_nm256_playback_start(chip, s, substream); |
| s->running = 1; |
| } |
| break; |
| case SNDRV_PCM_TRIGGER_STOP: |
| case SNDRV_PCM_TRIGGER_SUSPEND: |
| if (s->running) { |
| snd_nm256_playback_stop(chip); |
| s->running = 0; |
| } |
| break; |
| default: |
| err = -EINVAL; |
| break; |
| } |
| spin_unlock_irqrestore(&chip->reg_lock, flags); |
| return err; |
| } |
| |
| static int |
| snd_nm256_capture_trigger(snd_pcm_substream_t *substream, int cmd) |
| { |
| nm256_t *chip = snd_pcm_substream_chip(substream); |
| nm256_stream_t *s = (nm256_stream_t*)substream->runtime->private_data; |
| unsigned long flags; |
| int err = 0; |
| |
| snd_assert(s != NULL, return -ENXIO); |
| |
| spin_lock_irqsave(&chip->reg_lock, flags); |
| 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_irqrestore(&chip->reg_lock, flags); |
| return err; |
| } |
| |
| |
| /* |
| * prepare playback/capture channel |
| */ |
| static int snd_nm256_pcm_prepare(snd_pcm_substream_t *substream) |
| { |
| nm256_t *chip = snd_pcm_substream_chip(substream); |
| snd_pcm_runtime_t *runtime = substream->runtime; |
| nm256_stream_t *s = (nm256_stream_t*)runtime->private_data; |
| unsigned long flags; |
| |
| snd_assert(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_irqsave(&chip->reg_lock, flags); |
| s->running = 0; |
| snd_nm256_set_format(chip, s, substream); |
| spin_unlock_irqrestore(&chip->reg_lock, flags); |
| |
| return 0; |
| } |
| |
| |
| /* |
| * get the current pointer |
| */ |
| static snd_pcm_uframes_t |
| snd_nm256_playback_pointer(snd_pcm_substream_t * substream) |
| { |
| nm256_t *chip = snd_pcm_substream_chip(substream); |
| nm256_stream_t *s = (nm256_stream_t*)substream->runtime->private_data; |
| unsigned long curp; |
| |
| snd_assert(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(snd_pcm_substream_t * substream) |
| { |
| nm256_t *chip = snd_pcm_substream_chip(substream); |
| nm256_stream_t *s = (nm256_stream_t*)substream->runtime->private_data; |
| unsigned long curp; |
| |
| snd_assert(s != NULL, 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); |
| } |
| |
| #ifndef __i386__ |
| /* FIXME: I/O space is not accessible via pointers on all architectures */ |
| |
| /* |
| * silence / copy for playback |
| */ |
| static int |
| snd_nm256_playback_silence(snd_pcm_substream_t *substream, |
| int channel, /* not used (interleaved data) */ |
| snd_pcm_uframes_t pos, |
| snd_pcm_uframes_t count) |
| { |
| snd_pcm_runtime_t *runtime = substream->runtime; |
| nm256_stream_t *s = (nm256_stream_t*)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(snd_pcm_substream_t *substream, |
| int channel, /* not used (interleaved data) */ |
| snd_pcm_uframes_t pos, |
| void *src, |
| snd_pcm_uframes_t count) |
| { |
| snd_pcm_runtime_t *runtime = substream->runtime; |
| nm256_stream_t *s = (nm256_stream_t*)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(snd_pcm_substream_t *substream, |
| int channel, /* not used (interleaved data) */ |
| snd_pcm_uframes_t pos, |
| void *dst, |
| snd_pcm_uframes_t count) |
| { |
| snd_pcm_runtime_t *runtime = substream->runtime; |
| nm256_stream_t *s = (nm256_stream_t*)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(nm256_t *chip) |
| { |
| nm256_stream_t *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(nm256_t *chip) |
| { |
| nm256_stream_t *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 snd_pcm_hardware_t snd_nm256_playback = |
| { |
| info: |
| #ifdef __i386__ |
| SNDRV_PCM_INFO_MMAP|SNDRV_PCM_INFO_MMAP_VALID| |
| #endif |
| 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 snd_pcm_hardware_t snd_nm256_capture = |
| { |
| info: |
| #ifdef __i386__ |
| SNDRV_PCM_INFO_MMAP|SNDRV_PCM_INFO_MMAP_VALID| |
| #endif |
| 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(snd_pcm_substream_t *substream, snd_pcm_hw_params_t *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(nm256_t *chip, nm256_stream_t *s, |
| snd_pcm_substream_t *substream, |
| snd_pcm_hardware_t *hw_ptr) |
| { |
| snd_pcm_runtime_t *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*) s->bufptr; |
| runtime->dma_addr = s->bufptr_addr; |
| runtime->dma_bytes = s->bufsize; |
| runtime->private_data = s; |
| s->substream = substream; |
| |
| snd_pcm_set_sync(substream); |
| snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, |
| &constraints_rates); |
| } |
| |
| static int |
| snd_nm256_playback_open(snd_pcm_substream_t *substream) |
| { |
| nm256_t *chip = snd_pcm_substream_chip(substream); |
| |
| snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_PLAYBACK], |
| substream, &snd_nm256_playback); |
| return 0; |
| } |
| |
| static int |
| snd_nm256_capture_open(snd_pcm_substream_t *substream) |
| { |
| nm256_t *chip = snd_pcm_substream_chip(substream); |
| |
| 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(snd_pcm_substream_t *substream) |
| { |
| return 0; |
| } |
| |
| |
| static int |
| snd_nm256_capture_close(snd_pcm_substream_t *substream) |
| { |
| return 0; |
| } |
| |
| /* |
| * create a pcm instance |
| */ |
| static snd_pcm_ops_t 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 |
| }; |
| |
| static snd_pcm_ops_t 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 |
| }; |
| |
| static int __init |
| snd_nm256_pcm(nm256_t *chip, int device) |
| { |
| snd_pcm_t *pcm; |
| int i, err; |
| |
| for (i = 0; i < 2; i++) { |
| nm256_stream_t *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(nm256_t *chip) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&chip->reg_lock, flags); |
| /* 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); |
| spin_unlock_irqrestore(&chip->reg_lock, flags); |
| } |
| |
| |
| inline static void |
| snd_nm256_intr_check(nm256_t *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; |
| } |
| } |
| |
| /* |
| * 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 void |
| snd_nm256_interrupt(int irq, void *dev_id, struct pt_regs *dummy) |
| { |
| nm256_t *chip = snd_magic_cast(nm256_t, dev_id, return); |
| u16 status; |
| u8 cbyte; |
| |
| status = snd_nm256_readw(chip, NM_INT_REG); |
| |
| /* Not ours. */ |
| if (status == 0) { |
| snd_nm256_intr_check(chip); |
| return; |
| } |
| |
| 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); |
| snd_printd("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); |
| snd_printd("NM256: Got misc interrupt #2\n"); |
| cbyte = snd_nm256_readb(chip, 0x400); |
| snd_nm256_writeb(chip, 0x400, cbyte & ~2); |
| } |
| |
| /* Unknown interrupt. */ |
| if (status) { |
| snd_printd("NM256: Fire in the hole! Unknown status 0x%x\n", |
| status); |
| /* Pray. */ |
| NM_ACK_INT(chip, status); |
| } |
| |
| spin_unlock(&chip->reg_lock); |
| } |
| |
| /* |
| * 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 void |
| snd_nm256_interrupt_zx(int irq, void *dev_id, struct pt_regs *dummy) |
| { |
| nm256_t *chip = snd_magic_cast(nm256_t, dev_id, return); |
| u32 status; |
| u8 cbyte; |
| |
| status = snd_nm256_readl(chip, NM_INT_REG); |
| |
| /* Not ours. */ |
| if (status == 0) { |
| snd_nm256_intr_check(chip); |
| return; |
| } |
| |
| 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); |
| snd_printd("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); |
| snd_printd("NM256: Got misc interrupt #2\n"); |
| cbyte = snd_nm256_readb(chip, 0x400); |
| snd_nm256_writeb(chip, 0x400, cbyte & ~2); |
| } |
| |
| /* Unknown interrupt. */ |
| if (status) { |
| snd_printd("NM256: Fire in the hole! Unknown status 0x%x\n", |
| status); |
| /* Pray. */ |
| NM2_ACK_INT(chip, status); |
| } |
| |
| spin_unlock(&chip->reg_lock); |
| } |
| |
| /* |
| * 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(nm256_t *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; |
| } |
| |
| /* |
| */ |
| static unsigned short |
| snd_nm256_ac97_read(ac97_t *ac97, unsigned short reg) |
| { |
| nm256_t *chip = snd_magic_cast(nm256_t, ac97->private_data, return -ENXIO); |
| int res; |
| |
| if (reg >= 128) |
| return 0; |
| |
| if (! snd_nm256_ac97_ready(chip)) |
| return 0; |
| res = snd_nm256_readw(chip, chip->mixer_base + reg); |
| /* Magic delay. Bleah yucky. */ |
| udelay(1000); |
| return res; |
| } |
| |
| /* |
| */ |
| static void |
| snd_nm256_ac97_write(ac97_t *ac97, |
| unsigned short reg, unsigned short val) |
| { |
| nm256_t *chip = snd_magic_cast(nm256_t, ac97->private_data, return); |
| int tries = 2; |
| u32 base; |
| |
| 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); |
| udelay(1000); /* a little delay here seems better.. */ |
| if (snd_nm256_ac97_ready(chip)) |
| return; |
| } |
| snd_printd("nm256: ac97 codec not ready..\n"); |
| } |
| |
| /* initialize the ac97 into a known state */ |
| static void |
| snd_nm256_ac97_reset(ac97_t *ac97) |
| { |
| nm256_t *chip = snd_magic_cast(nm256_t, ac97->private_data, return); |
| unsigned long flags; |
| |
| spin_lock_irqsave(&chip->reg_lock, flags); |
| /* Reset the mixer. 'Tis magic! */ |
| snd_nm256_writeb(chip, 0x6c0, 1); |
| #if 0 /* Dell latitude LS will lock up by this */ |
| snd_nm256_writeb(chip, 0x6cc, 0x87); |
| #endif |
| snd_nm256_writeb(chip, 0x6cc, 0x80); |
| snd_nm256_writeb(chip, 0x6cc, 0x0); |
| spin_unlock_irqrestore(&chip->reg_lock, flags); |
| } |
| |
| /* create an ac97 mixer interface */ |
| static int __init |
| snd_nm256_mixer(nm256_t *chip) |
| { |
| ac97_t ac97; |
| int err; |
| |
| memset(&ac97, 0, sizeof(ac97)); |
| ac97.init = snd_nm256_ac97_reset; |
| ac97.write = snd_nm256_ac97_write; |
| ac97.read = snd_nm256_ac97_read; |
| ac97.private_data = chip; |
| if ((err = snd_ac97_mixer(chip->card, &ac97, &chip->ac97)) < 0) |
| return err; |
| |
| 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 __init |
| snd_nm256_peek_for_sig(nm256_t *chip) |
| { |
| /* The signature is located 1K below the end of video RAM. */ |
| unsigned long temp; |
| /* Default buffer end is 5120 bytes below the top of RAM. */ |
| unsigned long pointer_found = chip->buffer_end - 0x1400; |
| u32 sig; |
| |
| temp = (unsigned long) ioremap_nocache(chip->buffer_addr + chip->buffer_end - 0x400, 16); |
| if (temp == 0) { |
| snd_printk("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) { |
| snd_printk("invalid signature found: 0x%x\n", pointer); |
| iounmap((void *)temp); |
| return -ENODEV; |
| } else { |
| pointer_found = pointer; |
| printk(KERN_INFO "nm256: found card signature in video RAM: 0x%x\n", pointer); |
| } |
| } |
| |
| iounmap((void *)temp); |
| chip->buffer_end = pointer_found; |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_PM |
| /* |
| * APM event handler, so the card is properly reinitialized after a power |
| * event. |
| */ |
| static void nm256_suspend(nm256_t *chip) |
| { |
| snd_card_t *card = chip->card; |
| |
| snd_power_lock(card); |
| if (card->power_state == SNDRV_CTL_POWER_D3hot) |
| goto __skip; |
| |
| snd_pcm_suspend_all(chip->pcm); |
| chip->coeffs_current = 0; |
| snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); |
| __skip: |
| snd_power_unlock(card); |
| } |
| |
| static void nm256_resume(nm256_t *chip) |
| { |
| snd_card_t *card = chip->card; |
| |
| snd_power_lock(card); |
| if (card->power_state == SNDRV_CTL_POWER_D0) |
| goto __skip; |
| |
| /* Perform a full reset on the hardware */ |
| pci_enable_device(chip->pci); |
| snd_nm256_init_chip(chip); |
| |
| /* restore ac97 */ |
| snd_ac97_resume(chip->ac97); |
| |
| snd_power_change_state(card, SNDRV_CTL_POWER_D0); |
| __skip: |
| snd_power_unlock(card); |
| } |
| |
| #ifndef PCI_OLD_SUSPEND |
| static int snd_nm256_suspend(struct pci_dev *dev, u32 state) |
| { |
| nm256_t *chip = snd_magic_cast(nm256_t, pci_get_drvdata(dev), return -ENXIO); |
| nm256_suspend(chip); |
| return 0; |
| } |
| static int snd_nm256_resume(struct pci_dev *dev) |
| { |
| nm256_t *chip = snd_magic_cast(nm256_t, pci_get_drvdata(dev), return -ENXIO); |
| nm256_resume(chip); |
| return 0; |
| } |
| #else |
| static void snd_nm256_suspend(struct pci_dev *dev) |
| { |
| nm256_t *chip = snd_magic_cast(nm256_t, pci_get_drvdata(dev), return); |
| nm256_suspend(chip); |
| } |
| static void snd_nm256_resume(struct pci_dev *dev) |
| { |
| nm256_t *chip = snd_magic_cast(nm256_t, pci_get_drvdata(dev), return); |
| nm256_resume(chip); |
| } |
| #endif |
| |
| /* callback */ |
| static int snd_nm256_set_power_state(snd_card_t *card, unsigned int power_state) |
| { |
| nm256_t *chip = snd_magic_cast(nm256_t, card->power_state_private_data, return -ENXIO); |
| switch (power_state) { |
| case SNDRV_CTL_POWER_D0: |
| case SNDRV_CTL_POWER_D1: |
| case SNDRV_CTL_POWER_D2: |
| nm256_resume(chip); |
| break; |
| case SNDRV_CTL_POWER_D3hot: |
| case SNDRV_CTL_POWER_D3cold: |
| nm256_suspend(chip); |
| break; |
| default: |
| return -EINVAL; |
| } |
| return 0; |
| } |
| |
| #endif /* CONFIG_PM */ |
| |
| static int snd_nm256_free(nm256_t *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); |
| |
| synchronize_irq(); |
| |
| if (chip->cport) |
| iounmap((void *) chip->cport); |
| if (chip->buffer) |
| iounmap((void *) chip->buffer); |
| if (chip->res_cport) { |
| release_resource(chip->res_cport); |
| kfree_nocheck(chip->res_cport); |
| } |
| if (chip->res_buffer) { |
| release_resource(chip->res_buffer); |
| kfree_nocheck(chip->res_buffer); |
| } |
| if (chip->irq >= 0) |
| free_irq(chip->irq, (void*)chip); |
| |
| snd_magic_kfree(chip); |
| return 0; |
| } |
| |
| static int snd_nm256_dev_free(snd_device_t *device) |
| { |
| nm256_t *chip = snd_magic_cast(nm256_t, device->device_data, return -ENXIO); |
| return snd_nm256_free(chip); |
| } |
| |
| static int __init |
| snd_nm256_create(snd_card_t *card, struct pci_dev *pci, |
| int play_bufsize, int capt_bufsize, |
| int force_load, |
| u32 buffertop, |
| int usecache, |
| nm256_t **chip_ret) |
| { |
| nm256_t *chip; |
| int err, pval; |
| static snd_device_ops_t ops = { |
| dev_free: snd_nm256_dev_free, |
| }; |
| u32 addr; |
| |
| *chip_ret = NULL; |
| |
| chip = snd_magic_kcalloc(nm256_t, 0, GFP_KERNEL); |
| if (chip == NULL) |
| return -ENOMEM; |
| |
| chip->card = card; |
| chip->pci = pci; |
| chip->use_cache = usecache; |
| spin_lock_init(&chip->reg_lock); |
| chip->irq = -1; |
| |
| chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize = play_bufsize; |
| chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize = capt_bufsize; |
| |
| /* |
| * 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) { |
| snd_printk("memory region 0x%lx (size 0x%x) busy\n", |
| chip->cport_addr, NM_PORT2_SIZE); |
| err = -EBUSY; |
| goto __error; |
| } |
| chip->cport = (unsigned long) ioremap_nocache(chip->cport_addr, NM_PORT2_SIZE); |
| if (chip->cport == 0) { |
| snd_printk("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_load) { |
| printk(KERN_INFO "nm256: no ac97 is found!\n"); |
| printk(KERN_INFO " force the driver to load by passing in the module parameter\n"); |
| printk(KERN_INFO " snd_force_ac97=1\n"); |
| printk(KERN_INFO " or try sb16 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 (buffertop >= chip->buffer_size && buffertop < chip->buffer_end) |
| chip->buffer_end = buffertop; |
| 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; |
| |
| snd_printd("NM256: 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) { |
| snd_printk("nm256: buffer 0x%lx (size 0x%x) busy\n", |
| chip->buffer_addr, chip->buffer_size); |
| err = -EBUSY; |
| goto __error; |
| } |
| chip->buffer = (unsigned long) ioremap_nocache(chip->buffer_addr, chip->buffer_size); |
| if (chip->buffer == 0) { |
| err = -ENOMEM; |
| snd_printk("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; |
| } |
| |
| /* acquire interrupt */ |
| if (request_irq(pci->irq, chip->interrupt, SA_INTERRUPT|SA_SHIRQ, |
| card->driver, (void*)chip)) { |
| err = -EBUSY; |
| snd_printk("unable to grab IRQ %d\n", pci->irq); |
| goto __error; |
| } |
| chip->irq = pci->irq; |
| |
| /* Fixed setting. */ |
| chip->mixer_base = NM_MIXER_OFFSET; |
| |
| chip->coeffs_current = 0; |
| |
| snd_nm256_init_chip(chip); |
| |
| if ((err = snd_nm256_pcm(chip, 0)) < 0) |
| goto __error; |
| |
| if ((err = snd_nm256_mixer(chip) < 0)) |
| goto __error; |
| |
| // pci_set_master(pci); /* needed? */ |
| |
| #ifdef CONFIG_PM |
| card->set_power_state = snd_nm256_set_power_state; |
| card->power_state_private_data = chip; |
| #endif |
| |
| 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; |
| } |
| |
| |
| static int __devinit snd_nm256_probe(struct pci_dev *pci, |
| const struct pci_device_id *id) |
| { |
| static int dev = 0; |
| snd_card_t *card; |
| nm256_t *chip; |
| int err; |
| unsigned int buffer_top; |
| |
| if ((err = pci_enable_device(pci)) < 0) |
| return err; |
| |
| if (dev >= SNDRV_CARDS) |
| return -ENODEV; |
| if (!snd_enable[dev]) { |
| dev++; |
| return -ENOENT; |
| } |
| |
| card = snd_card_new(snd_index[dev], snd_id[dev], THIS_MODULE, 0); |
| if (card == NULL) |
| return -ENOMEM; |
| |
| 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; |
| default: |
| snd_printk("invalid device id 0x%x\n", pci->device); |
| snd_card_free(card); |
| return -EINVAL; |
| } |
| |
| if (snd_vaio_hack[dev]) |
| buffer_top = 0x25a800; /* this avoids conflicts with XFree86 server */ |
| else |
| buffer_top = snd_buffer_top[dev]; |
| |
| if (snd_playback_bufsize[dev] < 4) |
| snd_playback_bufsize[dev] = 4; |
| if (snd_playback_bufsize[dev] > 128) |
| snd_playback_bufsize[dev] = 128; |
| if (snd_capture_bufsize[dev] < 4) |
| snd_capture_bufsize[dev] = 4; |
| if (snd_capture_bufsize[dev] > 128) |
| snd_capture_bufsize[dev] = 128; |
| if ((err = snd_nm256_create(card, pci, |
| snd_playback_bufsize[dev] * 1024, /* in bytes */ |
| snd_capture_bufsize[dev] * 1024, /* in bytes */ |
| snd_force_ac97[dev], |
| buffer_top, |
| snd_use_cache[dev], |
| &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, chip); |
| dev++; |
| return 0; |
| } |
| |
| static void __devexit snd_nm256_remove(struct pci_dev *pci) |
| { |
| nm256_t *chip = snd_magic_cast(nm256_t, pci_get_drvdata(pci), return); |
| if (chip) |
| snd_card_free(chip->card); |
| pci_set_drvdata(pci, NULL); |
| } |
| |
| |
| static struct pci_driver driver = { |
| name: "NeoMagic 256", |
| id_table: snd_nm256_ids, |
| probe: snd_nm256_probe, |
| remove: __devexit_p(snd_nm256_remove), |
| #ifdef CONFIG_PM |
| suspend: snd_nm256_suspend, |
| resume: snd_nm256_resume, |
| #endif |
| }; |
| |
| |
| static int __init alsa_card_nm256_init(void) |
| { |
| int err; |
| if ((err = pci_module_init(&driver)) < 0) { |
| #ifdef MODULE |
| snd_printk("NeoMagic 256 audio soundchip not found or device busy\n"); |
| #endif |
| return err; |
| } |
| return 0; |
| } |
| |
| static void __exit alsa_card_nm256_exit(void) |
| { |
| pci_unregister_driver(&driver); |
| } |
| |
| module_init(alsa_card_nm256_init) |
| module_exit(alsa_card_nm256_exit) |
| |
| #ifndef MODULE |
| |
| /* format is: snd-nm256=snd_enable,snd_index,snd_id, |
| snd_playback_bufsize,snd_capture_bufsize, |
| snd_force_ac97,snd_buffer_top,snd_use_cache */ |
| |
| static int __init alsa_card_nm256_setup(char *str) |
| { |
| static unsigned __initdata nr_dev = 0; |
| |
| if (nr_dev >= SNDRV_CARDS) |
| return 0; |
| (void)(get_option(&str,&snd_enable[nr_dev]) == 2 && |
| get_option(&str,&snd_index[nr_dev]) == 2 && |
| get_id(&str,&snd_id[nr_dev]) == 2 && |
| get_option(&str,&snd_playback_bufsize[nr_dev]) == 2 && |
| get_option(&str,&snd_capture_bufsize[nr_dev]) == 2 && |
| get_option(&str,&snd_force_ac97[nr_dev]) == 2 && |
| get_option(&str,&snd_buffer_top[nr_dev]) == 2 && |
| get_option(&str,&snd_use_cache[nr_dev]) == 2); |
| nr_dev++; |
| return 1; |
| } |
| |
| __setup("snd-nm256=", alsa_card_nm256_setup); |
| |
| #endif /* ifndef MODULE */ |