+++ /dev/null
-/***********************************************************************
- * Copyright 2001 MontaVista Software Inc.
- * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
- *
- * drivers/sound/nec_vrc5477.c
- * AC97 sound dirver for NEC Vrc5477 chip (an integrated,
- * multi-function controller chip for MIPS CPUs)
- *
- * VRA support Copyright 2001 Bradley D. LaRonde <brad@ltc.com>
- *
- * 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 code is derived from ite8172.c, which is written by Steve Longerbeam.
- *
- * Features:
- * Currently we only support the following capabilities:
- * . mono output to PCM L/R (line out).
- * . stereo output to PCM L/R (line out).
- * . mono input from PCM L (line in).
- * . stereo output from PCM (line in).
- * . sampling rate at 48k or variable sampling rate
- * . support /dev/dsp, /dev/mixer devices, standard OSS devices.
- * . only support 16-bit PCM format (hardware limit, no software
- * translation)
- * . support duplex, but no trigger or realtime.
- *
- * Specifically the following are not supported:
- * . app-set frag size.
- * . mmap'ed buffer access
- */
-
-/*
- * Original comments from ite8172.c file.
- */
-
-/*
- *
- * Notes:
- *
- * 1. Much of the OSS buffer allocation, ioctl's, and mmap'ing are
- * taken, slightly modified or not at all, from the ES1371 driver,
- * so refer to the credits in es1371.c for those. The rest of the
- * code (probe, open, read, write, the ISR, etc.) is new.
- * 2. The following support is untested:
- * * Memory mapping the audio buffers, and the ioctl controls that go
- * with it.
- * * S/PDIF output.
- * 3. The following is not supported:
- * * I2S input.
- * * legacy audio mode.
- * 4. Support for volume button interrupts is implemented but doesn't
- * work yet.
- *
- * Revision history
- * 02.08.2001 0.1 Initial release
- */
-
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/ioport.h>
-#include <linux/sched.h>
-#include <linux/delay.h>
-#include <linux/sound.h>
-#include <linux/slab.h>
-#include <linux/soundcard.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/poll.h>
-#include <linux/bitops.h>
-#include <linux/proc_fs.h>
-#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
-#include <linux/ac97_codec.h>
-#include <linux/mutex.h>
-
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <asm/uaccess.h>
-
-/* -------------------debug macros -------------------------------------- */
-/* #undef VRC5477_AC97_DEBUG */
-#define VRC5477_AC97_DEBUG
-
-#undef VRC5477_AC97_VERBOSE_DEBUG
-/* #define VRC5477_AC97_VERBOSE_DEBUG */
-
-#if defined(VRC5477_AC97_VERBOSE_DEBUG)
-#define VRC5477_AC97_DEBUG
-#endif
-
-#if defined(VRC5477_AC97_DEBUG)
-#define ASSERT(x) if (!(x)) { \
- panic("assertion failed at %s:%d: %s\n", __FILE__, __LINE__, #x); }
-#else
-#define ASSERT(x)
-#endif /* VRC5477_AC97_DEBUG */
-
-#if defined(VRC5477_AC97_VERBOSE_DEBUG)
-static u16 inTicket; /* check sync between intr & write */
-static u16 outTicket;
-#endif
-
-/* --------------------------------------------------------------------- */
-
-#undef OSS_DOCUMENTED_MIXER_SEMANTICS
-
-static const unsigned sample_shift[] = { 0, 1, 1, 2 };
-
-#define VRC5477_INT_CLR 0x0
-#define VRC5477_INT_STATUS 0x0
-#define VRC5477_CODEC_WR 0x4
-#define VRC5477_CODEC_RD 0x8
-#define VRC5477_CTRL 0x18
-#define VRC5477_ACLINK_CTRL 0x1c
-#define VRC5477_INT_MASK 0x24
-
-#define VRC5477_DAC1_CTRL 0x30
-#define VRC5477_DAC1L 0x34
-#define VRC5477_DAC1_BADDR 0x38
-#define VRC5477_DAC2_CTRL 0x3c
-#define VRC5477_DAC2L 0x40
-#define VRC5477_DAC2_BADDR 0x44
-#define VRC5477_DAC3_CTRL 0x48
-#define VRC5477_DAC3L 0x4c
-#define VRC5477_DAC3_BADDR 0x50
-
-#define VRC5477_ADC1_CTRL 0x54
-#define VRC5477_ADC1L 0x58
-#define VRC5477_ADC1_BADDR 0x5c
-#define VRC5477_ADC2_CTRL 0x60
-#define VRC5477_ADC2L 0x64
-#define VRC5477_ADC2_BADDR 0x68
-#define VRC5477_ADC3_CTRL 0x6c
-#define VRC5477_ADC3L 0x70
-#define VRC5477_ADC3_BADDR 0x74
-
-#define VRC5477_CODEC_WR_RWC (1 << 23)
-
-#define VRC5477_CODEC_RD_RRDYA (1 << 31)
-#define VRC5477_CODEC_RD_RRDYD (1 << 30)
-
-#define VRC5477_ACLINK_CTRL_RST_ON (1 << 15)
-#define VRC5477_ACLINK_CTRL_RST_TIME 0x7f
-#define VRC5477_ACLINK_CTRL_SYNC_ON (1 << 30)
-#define VRC5477_ACLINK_CTRL_CK_STOP_ON (1 << 31)
-
-#define VRC5477_CTRL_DAC2ENB (1 << 15)
-#define VRC5477_CTRL_ADC2ENB (1 << 14)
-#define VRC5477_CTRL_DAC1ENB (1 << 13)
-#define VRC5477_CTRL_ADC1ENB (1 << 12)
-
-#define VRC5477_INT_MASK_NMASK (1 << 31)
-#define VRC5477_INT_MASK_DAC1END (1 << 5)
-#define VRC5477_INT_MASK_DAC2END (1 << 4)
-#define VRC5477_INT_MASK_DAC3END (1 << 3)
-#define VRC5477_INT_MASK_ADC1END (1 << 2)
-#define VRC5477_INT_MASK_ADC2END (1 << 1)
-#define VRC5477_INT_MASK_ADC3END (1 << 0)
-
-#define VRC5477_DMA_ACTIVATION (1 << 31)
-#define VRC5477_DMA_WIP (1 << 30)
-
-
-#define VRC5477_AC97_MODULE_NAME "NEC_Vrc5477_audio"
-#define PFX VRC5477_AC97_MODULE_NAME ": "
-
-/* --------------------------------------------------------------------- */
-
-struct vrc5477_ac97_state {
- /* list of vrc5477_ac97 devices */
- struct list_head devs;
-
- /* the corresponding pci_dev structure */
- struct pci_dev *dev;
-
- /* soundcore stuff */
- int dev_audio;
-
- /* hardware resources */
- unsigned long io;
- unsigned int irq;
-
-#ifdef VRC5477_AC97_DEBUG
- /* debug /proc entry */
- struct proc_dir_entry *ps;
- struct proc_dir_entry *ac97_ps;
-#endif /* VRC5477_AC97_DEBUG */
-
- struct ac97_codec *codec;
-
- unsigned dacChannels, adcChannels;
- unsigned short dacRate, adcRate;
- unsigned short extended_status;
-
- spinlock_t lock;
- struct mutex open_mutex;
- mode_t open_mode;
- wait_queue_head_t open_wait;
-
- struct dmabuf {
- void *lbuf, *rbuf;
- dma_addr_t lbufDma, rbufDma;
- unsigned bufOrder;
- unsigned numFrag;
- unsigned fragShift;
- unsigned fragSize; /* redundant */
- unsigned fragTotalSize; /* = numFrag * fragSize(real) */
- unsigned nextIn;
- unsigned nextOut;
- int count;
- unsigned error; /* over/underrun */
- wait_queue_head_t wait;
- /* OSS stuff */
- unsigned stopped:1;
- unsigned ready:1;
- } dma_dac, dma_adc;
-
- #define WORK_BUF_SIZE 2048
- struct {
- u16 lchannel;
- u16 rchannel;
- } workBuf[WORK_BUF_SIZE/4];
-};
-
-/* --------------------------------------------------------------------- */
-
-static LIST_HEAD(devs);
-
-/* --------------------------------------------------------------------- */
-
-static inline unsigned ld2(unsigned int x)
-{
- unsigned r = 0;
-
- if (x >= 0x10000) {
- x >>= 16;
- r += 16;
- }
- if (x >= 0x100) {
- x >>= 8;
- r += 8;
- }
- if (x >= 0x10) {
- x >>= 4;
- r += 4;
- }
- if (x >= 4) {
- x >>= 2;
- r += 2;
- }
- if (x >= 2)
- r++;
- return r;
-}
-
-/* --------------------------------------------------------------------- */
-
-static u16 rdcodec(struct ac97_codec *codec, u8 addr)
-{
- struct vrc5477_ac97_state *s =
- (struct vrc5477_ac97_state *)codec->private_data;
- unsigned long flags;
- u32 result;
-
- spin_lock_irqsave(&s->lock, flags);
-
- /* wait until we can access codec registers */
- while (inl(s->io + VRC5477_CODEC_WR) & 0x80000000);
-
- /* write the address and "read" command to codec */
- addr = addr & 0x7f;
- outl((addr << 16) | VRC5477_CODEC_WR_RWC, s->io + VRC5477_CODEC_WR);
-
- /* get the return result */
- udelay(100); /* workaround hardware bug */
- while ( (result = inl(s->io + VRC5477_CODEC_RD)) &
- (VRC5477_CODEC_RD_RRDYA | VRC5477_CODEC_RD_RRDYD) ) {
- /* we get either addr or data, or both */
- if (result & VRC5477_CODEC_RD_RRDYA) {
- ASSERT(addr == ((result >> 16) & 0x7f) );
- }
- if (result & VRC5477_CODEC_RD_RRDYD) {
- break;
- }
- }
-
- spin_unlock_irqrestore(&s->lock, flags);
-
- return result & 0xffff;
-}
-
-
-static void wrcodec(struct ac97_codec *codec, u8 addr, u16 data)
-{
- struct vrc5477_ac97_state *s =
- (struct vrc5477_ac97_state *)codec->private_data;
- unsigned long flags;
-
- spin_lock_irqsave(&s->lock, flags);
-
- /* wait until we can access codec registers */
- while (inl(s->io + VRC5477_CODEC_WR) & 0x80000000);
-
- /* write the address and value to codec */
- outl((addr << 16) | data, s->io + VRC5477_CODEC_WR);
-
- spin_unlock_irqrestore(&s->lock, flags);
-}
-
-
-static void waitcodec(struct ac97_codec *codec)
-{
- struct vrc5477_ac97_state *s =
- (struct vrc5477_ac97_state *)codec->private_data;
-
- /* wait until we can access codec registers */
- while (inl(s->io + VRC5477_CODEC_WR) & 0x80000000);
-}
-
-static int ac97_codec_not_present(struct ac97_codec *codec)
-{
- struct vrc5477_ac97_state *s =
- (struct vrc5477_ac97_state *)codec->private_data;
- unsigned long flags;
- unsigned short count = 0xffff;
-
- spin_lock_irqsave(&s->lock, flags);
-
- /* wait until we can access codec registers */
- do {
- if (!(inl(s->io + VRC5477_CODEC_WR) & 0x80000000))
- break;
- } while (--count);
-
- if (count == 0) {
- spin_unlock_irqrestore(&s->lock, flags);
- return -1;
- }
-
- /* write 0 to reset */
- outl((AC97_RESET << 16) | 0, s->io + VRC5477_CODEC_WR);
-
- /* test whether we get a response from ac97 chip */
- count = 0xffff;
- do {
- if (!(inl(s->io + VRC5477_CODEC_WR) & 0x80000000))
- break;
- } while (--count);
-
- if (count == 0) {
- spin_unlock_irqrestore(&s->lock, flags);
- return -1;
- }
- spin_unlock_irqrestore(&s->lock, flags);
- return 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-static void vrc5477_ac97_delay(int msec)
-{
- unsigned long tmo;
- signed long tmo2;
-
- if (in_interrupt())
- return;
-
- tmo = jiffies + (msec*HZ)/1000;
- for (;;) {
- tmo2 = tmo - jiffies;
- if (tmo2 <= 0)
- break;
- schedule_timeout(tmo2);
- }
-}
-
-
-static void set_adc_rate(struct vrc5477_ac97_state *s, unsigned rate)
-{
- wrcodec(s->codec, AC97_PCM_LR_ADC_RATE, rate);
- s->adcRate = rate;
-}
-
-
-static void set_dac_rate(struct vrc5477_ac97_state *s, unsigned rate)
-{
- if(s->extended_status & AC97_EXTSTAT_VRA) {
- wrcodec(s->codec, AC97_PCM_FRONT_DAC_RATE, rate);
- s->dacRate = rdcodec(s->codec, AC97_PCM_FRONT_DAC_RATE);
- }
-}
-
-static int ac97_codec_not_present(struct ac97_codec *codec)
-{
- struct vrc5477_ac97_state *s =
- (struct vrc5477_ac97_state *)codec->private_data;
- unsigned long flags;
- unsigned short count = 0xffff;
-
- spin_lock_irqsave(&s->lock, flags);
-
- /* wait until we can access codec registers */
- do {
- if (!(inl(s->io + VRC5477_CODEC_WR) & 0x80000000))
- break;
- } while (--count);
-
- if (count == 0) {
- spin_unlock_irqrestore(&s->lock, flags);
- return -1;
- }
-
- /* write 0 to reset */
- outl((AC97_RESET << 16) | 0, s->io + VRC5477_CODEC_WR);
-
- /* test whether we get a response from ac97 chip */
- count = 0xffff;
- do {
- if (!(inl(s->io + VRC5477_CODEC_WR) & 0x80000000))
- break;
- } while (--count);
-
- if (count == 0) {
- spin_unlock_irqrestore(&s->lock, flags);
- return -1;
- }
- spin_unlock_irqrestore(&s->lock, flags);
- return 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-static inline void
-stop_dac(struct vrc5477_ac97_state *s)
-{
- struct dmabuf* db = &s->dma_dac;
- unsigned long flags;
- u32 temp;
-
- spin_lock_irqsave(&s->lock, flags);
-
- if (db->stopped) {
- spin_unlock_irqrestore(&s->lock, flags);
- return;
- }
-
- /* deactivate the dma */
- outl(0, s->io + VRC5477_DAC1_CTRL);
- outl(0, s->io + VRC5477_DAC2_CTRL);
-
- /* wait for DAM completely stop */
- while (inl(s->io + VRC5477_DAC1_CTRL) & VRC5477_DMA_WIP);
- while (inl(s->io + VRC5477_DAC2_CTRL) & VRC5477_DMA_WIP);
-
- /* disable dac slots in aclink */
- temp = inl(s->io + VRC5477_CTRL);
- temp &= ~ (VRC5477_CTRL_DAC1ENB | VRC5477_CTRL_DAC2ENB);
- outl (temp, s->io + VRC5477_CTRL);
-
- /* disable interrupts */
- temp = inl(s->io + VRC5477_INT_MASK);
- temp &= ~ (VRC5477_INT_MASK_DAC1END | VRC5477_INT_MASK_DAC2END);
- outl (temp, s->io + VRC5477_INT_MASK);
-
- /* clear pending ones */
- outl(VRC5477_INT_MASK_DAC1END | VRC5477_INT_MASK_DAC2END,
- s->io + VRC5477_INT_CLR);
-
- db->stopped = 1;
-
- spin_unlock_irqrestore(&s->lock, flags);
-}
-
-static void start_dac(struct vrc5477_ac97_state *s)
-{
- struct dmabuf* db = &s->dma_dac;
- unsigned long flags;
- u32 dmaLength;
- u32 temp;
-
- spin_lock_irqsave(&s->lock, flags);
-
- if (!db->stopped) {
- spin_unlock_irqrestore(&s->lock, flags);
- return;
- }
-
- /* we should have some data to do the DMA trasnfer */
- ASSERT(db->count >= db->fragSize);
-
- /* clear pending fales interrupts */
- outl(VRC5477_INT_MASK_DAC1END | VRC5477_INT_MASK_DAC2END,
- s->io + VRC5477_INT_CLR);
-
- /* enable interrupts */
- temp = inl(s->io + VRC5477_INT_MASK);
- temp |= VRC5477_INT_MASK_DAC1END | VRC5477_INT_MASK_DAC2END;
- outl(temp, s->io + VRC5477_INT_MASK);
-
- /* setup dma base addr */
- outl(db->lbufDma + db->nextOut, s->io + VRC5477_DAC1_BADDR);
- if (s->dacChannels == 1) {
- outl(db->lbufDma + db->nextOut, s->io + VRC5477_DAC2_BADDR);
- } else {
- outl(db->rbufDma + db->nextOut, s->io + VRC5477_DAC2_BADDR);
- }
-
- /* set dma length, in the unit of 0x10 bytes */
- dmaLength = db->fragSize >> 4;
- outl(dmaLength, s->io + VRC5477_DAC1L);
- outl(dmaLength, s->io + VRC5477_DAC2L);
-
- /* activate dma */
- outl(VRC5477_DMA_ACTIVATION, s->io + VRC5477_DAC1_CTRL);
- outl(VRC5477_DMA_ACTIVATION, s->io + VRC5477_DAC2_CTRL);
-
- /* enable dac slots - we should hear the music now! */
- temp = inl(s->io + VRC5477_CTRL);
- temp |= (VRC5477_CTRL_DAC1ENB | VRC5477_CTRL_DAC2ENB);
- outl (temp, s->io + VRC5477_CTRL);
-
- /* it is time to setup next dma transfer */
- ASSERT(inl(s->io + VRC5477_DAC1_CTRL) & VRC5477_DMA_WIP);
- ASSERT(inl(s->io + VRC5477_DAC2_CTRL) & VRC5477_DMA_WIP);
-
- temp = db->nextOut + db->fragSize;
- if (temp >= db->fragTotalSize) {
- ASSERT(temp == db->fragTotalSize);
- temp = 0;
- }
-
- outl(db->lbufDma + temp, s->io + VRC5477_DAC1_BADDR);
- if (s->dacChannels == 1) {
- outl(db->lbufDma + temp, s->io + VRC5477_DAC2_BADDR);
- } else {
- outl(db->rbufDma + temp, s->io + VRC5477_DAC2_BADDR);
- }
-
- db->stopped = 0;
-
-#if defined(VRC5477_AC97_VERBOSE_DEBUG)
- outTicket = *(u16*)(db->lbuf+db->nextOut);
- if (db->count > db->fragSize) {
- ASSERT((u16)(outTicket+1) == *(u16*)(db->lbuf+temp));
- }
-#endif
-
- spin_unlock_irqrestore(&s->lock, flags);
-}
-
-static inline void stop_adc(struct vrc5477_ac97_state *s)
-{
- struct dmabuf* db = &s->dma_adc;
- unsigned long flags;
- u32 temp;
-
- spin_lock_irqsave(&s->lock, flags);
-
- if (db->stopped) {
- spin_unlock_irqrestore(&s->lock, flags);
- return;
- }
-
- /* deactivate the dma */
- outl(0, s->io + VRC5477_ADC1_CTRL);
- outl(0, s->io + VRC5477_ADC2_CTRL);
-
- /* disable adc slots in aclink */
- temp = inl(s->io + VRC5477_CTRL);
- temp &= ~ (VRC5477_CTRL_ADC1ENB | VRC5477_CTRL_ADC2ENB);
- outl (temp, s->io + VRC5477_CTRL);
-
- /* disable interrupts */
- temp = inl(s->io + VRC5477_INT_MASK);
- temp &= ~ (VRC5477_INT_MASK_ADC1END | VRC5477_INT_MASK_ADC2END);
- outl (temp, s->io + VRC5477_INT_MASK);
-
- /* clear pending ones */
- outl(VRC5477_INT_MASK_ADC1END | VRC5477_INT_MASK_ADC2END,
- s->io + VRC5477_INT_CLR);
-
- db->stopped = 1;
-
- spin_unlock_irqrestore(&s->lock, flags);
-}
-
-static void start_adc(struct vrc5477_ac97_state *s)
-{
- struct dmabuf* db = &s->dma_adc;
- unsigned long flags;
- u32 dmaLength;
- u32 temp;
-
- spin_lock_irqsave(&s->lock, flags);
-
- if (!db->stopped) {
- spin_unlock_irqrestore(&s->lock, flags);
- return;
- }
-
- /* we should at least have some free space in the buffer */
- ASSERT(db->count < db->fragTotalSize - db->fragSize * 2);
-
- /* clear pending ones */
- outl(VRC5477_INT_MASK_ADC1END | VRC5477_INT_MASK_ADC2END,
- s->io + VRC5477_INT_CLR);
-
- /* enable interrupts */
- temp = inl(s->io + VRC5477_INT_MASK);
- temp |= VRC5477_INT_MASK_ADC1END | VRC5477_INT_MASK_ADC2END;
- outl(temp, s->io + VRC5477_INT_MASK);
-
- /* setup dma base addr */
- outl(db->lbufDma + db->nextIn, s->io + VRC5477_ADC1_BADDR);
- outl(db->rbufDma + db->nextIn, s->io + VRC5477_ADC2_BADDR);
-
- /* setup dma length */
- dmaLength = db->fragSize >> 4;
- outl(dmaLength, s->io + VRC5477_ADC1L);
- outl(dmaLength, s->io + VRC5477_ADC2L);
-
- /* activate dma */
- outl(VRC5477_DMA_ACTIVATION, s->io + VRC5477_ADC1_CTRL);
- outl(VRC5477_DMA_ACTIVATION, s->io + VRC5477_ADC2_CTRL);
-
- /* enable adc slots */
- temp = inl(s->io + VRC5477_CTRL);
- temp |= (VRC5477_CTRL_ADC1ENB | VRC5477_CTRL_ADC2ENB);
- outl (temp, s->io + VRC5477_CTRL);
-
- /* it is time to setup next dma transfer */
- temp = db->nextIn + db->fragSize;
- if (temp >= db->fragTotalSize) {
- ASSERT(temp == db->fragTotalSize);
- temp = 0;
- }
- outl(db->lbufDma + temp, s->io + VRC5477_ADC1_BADDR);
- outl(db->rbufDma + temp, s->io + VRC5477_ADC2_BADDR);
-
- db->stopped = 0;
-
- spin_unlock_irqrestore(&s->lock, flags);
-}
-
-/* --------------------------------------------------------------------- */
-
-#define DMABUF_DEFAULTORDER (16-PAGE_SHIFT)
-#define DMABUF_MINORDER 1
-
-static inline void dealloc_dmabuf(struct vrc5477_ac97_state *s,
- struct dmabuf *db)
-{
- if (db->lbuf) {
- ASSERT(db->rbuf);
- pci_free_consistent(s->dev, PAGE_SIZE << db->bufOrder,
- db->lbuf, db->lbufDma);
- pci_free_consistent(s->dev, PAGE_SIZE << db->bufOrder,
- db->rbuf, db->rbufDma);
- db->lbuf = db->rbuf = NULL;
- }
- db->nextIn = db->nextOut = 0;
- db->ready = 0;
-}
-
-static int prog_dmabuf(struct vrc5477_ac97_state *s,
- struct dmabuf *db,
- unsigned rate)
-{
- int order;
- unsigned bufsize;
-
- if (!db->lbuf) {
- ASSERT(!db->rbuf);
-
- db->ready = 0;
- for (order = DMABUF_DEFAULTORDER;
- order >= DMABUF_MINORDER;
- order--) {
- db->lbuf = pci_alloc_consistent(s->dev,
- PAGE_SIZE << order,
- &db->lbufDma);
- db->rbuf = pci_alloc_consistent(s->dev,
- PAGE_SIZE << order,
- &db->rbufDma);
- if (db->lbuf && db->rbuf) break;
- if (db->lbuf) {
- ASSERT(!db->rbuf);
- pci_free_consistent(s->dev,
- PAGE_SIZE << order,
- db->lbuf,
- db->lbufDma);
- }
- }
- if (!db->lbuf) {
- ASSERT(!db->rbuf);
- return -ENOMEM;
- }
-
- db->bufOrder = order;
- }
-
- db->count = 0;
- db->nextIn = db->nextOut = 0;
-
- bufsize = PAGE_SIZE << db->bufOrder;
- db->fragShift = ld2(rate * 2 / 100);
- if (db->fragShift < 4) db->fragShift = 4;
-
- db->numFrag = bufsize >> db->fragShift;
- while (db->numFrag < 4 && db->fragShift > 4) {
- db->fragShift--;
- db->numFrag = bufsize >> db->fragShift;
- }
- db->fragSize = 1 << db->fragShift;
- db->fragTotalSize = db->numFrag << db->fragShift;
- memset(db->lbuf, 0, db->fragTotalSize);
- memset(db->rbuf, 0, db->fragTotalSize);
-
- db->ready = 1;
-
- return 0;
-}
-
-static inline int prog_dmabuf_adc(struct vrc5477_ac97_state *s)
-{
- stop_adc(s);
- return prog_dmabuf(s, &s->dma_adc, s->adcRate);
-}
-
-static inline int prog_dmabuf_dac(struct vrc5477_ac97_state *s)
-{
- stop_dac(s);
- return prog_dmabuf(s, &s->dma_dac, s->dacRate);
-}
-
-
-/* --------------------------------------------------------------------- */
-/* hold spinlock for the following! */
-
-static inline void vrc5477_ac97_adc_interrupt(struct vrc5477_ac97_state *s)
-{
- struct dmabuf* adc = &s->dma_adc;
- unsigned temp;
-
- /* we need two frags avaiable because one is already being used
- * and the other will be used when next interrupt happens.
- */
- if (adc->count >= adc->fragTotalSize - adc->fragSize) {
- stop_adc(s);
- adc->error++;
- printk(KERN_INFO PFX "adc overrun\n");
- return;
- }
-
- /* set the base addr for next DMA transfer */
- temp = adc->nextIn + 2*adc->fragSize;
- if (temp >= adc->fragTotalSize) {
- ASSERT( (temp == adc->fragTotalSize) ||
- (temp == adc->fragTotalSize + adc->fragSize) );
- temp -= adc->fragTotalSize;
- }
- outl(adc->lbufDma + temp, s->io + VRC5477_ADC1_BADDR);
- outl(adc->rbufDma + temp, s->io + VRC5477_ADC2_BADDR);
-
- /* adjust nextIn */
- adc->nextIn += adc->fragSize;
- if (adc->nextIn >= adc->fragTotalSize) {
- ASSERT(adc->nextIn == adc->fragTotalSize);
- adc->nextIn = 0;
- }
-
- /* adjust count */
- adc->count += adc->fragSize;
-
- /* wake up anybody listening */
- if (waitqueue_active(&adc->wait)) {
- wake_up_interruptible(&adc->wait);
- }
-}
-
-static inline void vrc5477_ac97_dac_interrupt(struct vrc5477_ac97_state *s)
-{
- struct dmabuf* dac = &s->dma_dac;
- unsigned temp;
-
- /* next DMA transfer should already started */
- // ASSERT(inl(s->io + VRC5477_DAC1_CTRL) & VRC5477_DMA_WIP);
- // ASSERT(inl(s->io + VRC5477_DAC2_CTRL) & VRC5477_DMA_WIP);
-
- /* let us set for next next DMA transfer */
- temp = dac->nextOut + dac->fragSize*2;
- if (temp >= dac->fragTotalSize) {
- ASSERT( (temp == dac->fragTotalSize) ||
- (temp == dac->fragTotalSize + dac->fragSize) );
- temp -= dac->fragTotalSize;
- }
- outl(dac->lbufDma + temp, s->io + VRC5477_DAC1_BADDR);
- if (s->dacChannels == 1) {
- outl(dac->lbufDma + temp, s->io + VRC5477_DAC2_BADDR);
- } else {
- outl(dac->rbufDma + temp, s->io + VRC5477_DAC2_BADDR);
- }
-
-#if defined(VRC5477_AC97_VERBOSE_DEBUG)
- if (*(u16*)(dac->lbuf + dac->nextOut) != outTicket) {
- printk("assert fail: - %d vs %d\n",
- *(u16*)(dac->lbuf + dac->nextOut),
- outTicket);
- ASSERT(1 == 0);
- }
-#endif
-
- /* adjust nextOut pointer */
- dac->nextOut += dac->fragSize;
- if (dac->nextOut >= dac->fragTotalSize) {
- ASSERT(dac->nextOut == dac->fragTotalSize);
- dac->nextOut = 0;
- }
-
- /* adjust count */
- dac->count -= dac->fragSize;
- if (dac->count <=0 ) {
- /* buffer under run */
- dac->count = 0;
- dac->nextIn = dac->nextOut;
- stop_dac(s);
- }
-
-#if defined(VRC5477_AC97_VERBOSE_DEBUG)
- if (dac->count) {
- outTicket ++;
- ASSERT(*(u16*)(dac->lbuf + dac->nextOut) == outTicket);
- }
-#endif
-
- /* we cannot have both under run and someone is waiting on us */
- ASSERT(! (waitqueue_active(&dac->wait) && (dac->count <= 0)) );
-
- /* wake up anybody listening */
- if (waitqueue_active(&dac->wait))
- wake_up_interruptible(&dac->wait);
-}
-
-static irqreturn_t vrc5477_ac97_interrupt(int irq, void *dev_id)
-{
- struct vrc5477_ac97_state *s = (struct vrc5477_ac97_state *)dev_id;
- u32 irqStatus;
- u32 adcInterrupts, dacInterrupts;
-
- spin_lock(&s->lock);
-
- /* get irqStatus and clear the detected ones */
- irqStatus = inl(s->io + VRC5477_INT_STATUS);
- outl(irqStatus, s->io + VRC5477_INT_CLR);
-
- /* let us see what we get */
- dacInterrupts = VRC5477_INT_MASK_DAC1END | VRC5477_INT_MASK_DAC2END;
- adcInterrupts = VRC5477_INT_MASK_ADC1END | VRC5477_INT_MASK_ADC2END;
- if (irqStatus & dacInterrupts) {
- /* we should get both interrupts, but just in case ... */
- if (irqStatus & VRC5477_INT_MASK_DAC1END) {
- vrc5477_ac97_dac_interrupt(s);
- }
- if ( (irqStatus & dacInterrupts) != dacInterrupts ) {
- printk(KERN_WARNING "vrc5477_ac97 : dac interrupts not in sync!!!\n");
- stop_dac(s);
- start_dac(s);
- }
- } else if (irqStatus & adcInterrupts) {
- /* we should get both interrupts, but just in case ... */
- if(irqStatus & VRC5477_INT_MASK_ADC1END) {
- vrc5477_ac97_adc_interrupt(s);
- }
- if ( (irqStatus & adcInterrupts) != adcInterrupts ) {
- printk(KERN_WARNING "vrc5477_ac97 : adc interrupts not in sync!!!\n");
- stop_adc(s);
- start_adc(s);
- }
- }
-
- spin_unlock(&s->lock);
- return IRQ_HANDLED;
-}
-
-/* --------------------------------------------------------------------- */
-
-static int vrc5477_ac97_open_mixdev(struct inode *inode, struct file *file)
-{
- int minor = iminor(inode);
- struct list_head *list;
- struct vrc5477_ac97_state *s;
-
- for (list = devs.next; ; list = list->next) {
- if (list == &devs)
- return -ENODEV;
- s = list_entry(list, struct vrc5477_ac97_state, devs);
- if (s->codec->dev_mixer == minor)
- break;
- }
- file->private_data = s;
- return nonseekable_open(inode, file);
-}
-
-static int vrc5477_ac97_release_mixdev(struct inode *inode, struct file *file)
-{
- return 0;
-}
-
-
-static int mixdev_ioctl(struct ac97_codec *codec, unsigned int cmd,
- unsigned long arg)
-{
- return codec->mixer_ioctl(codec, cmd, arg);
-}
-
-static int vrc5477_ac97_ioctl_mixdev(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- struct vrc5477_ac97_state *s =
- (struct vrc5477_ac97_state *)file->private_data;
- struct ac97_codec *codec = s->codec;
-
- return mixdev_ioctl(codec, cmd, arg);
-}
-
-static /*const*/ struct file_operations vrc5477_ac97_mixer_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .ioctl = vrc5477_ac97_ioctl_mixdev,
- .open = vrc5477_ac97_open_mixdev,
- .release = vrc5477_ac97_release_mixdev,
-};
-
-/* --------------------------------------------------------------------- */
-
-static int drain_dac(struct vrc5477_ac97_state *s, int nonblock)
-{
- unsigned long flags;
- int count, tmo;
-
- if (!s->dma_dac.ready)
- return 0;
-
- for (;;) {
- spin_lock_irqsave(&s->lock, flags);
- count = s->dma_dac.count;
- spin_unlock_irqrestore(&s->lock, flags);
- if (count <= 0)
- break;
- if (signal_pending(current))
- break;
- if (nonblock)
- return -EBUSY;
- tmo = 1000 * count / s->dacRate / 2;
- vrc5477_ac97_delay(tmo);
- }
- if (signal_pending(current))
- return -ERESTARTSYS;
- return 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-static inline int
-copy_two_channel_adc_to_user(struct vrc5477_ac97_state *s,
- char *buffer,
- int copyCount)
-{
- struct dmabuf *db = &s->dma_adc;
- int bufStart = db->nextOut;
- for (; copyCount > 0; ) {
- int i;
- int count = copyCount;
- if (count > WORK_BUF_SIZE/2) count = WORK_BUF_SIZE/2;
- for (i=0; i< count/2; i++) {
- s->workBuf[i].lchannel =
- *(u16*)(db->lbuf + bufStart + i*2);
- s->workBuf[i].rchannel =
- *(u16*)(db->rbuf + bufStart + i*2);
- }
- if (copy_to_user(buffer, s->workBuf, count*2)) {
- return -1;
- }
-
- copyCount -= count;
- bufStart += count;
- ASSERT(bufStart <= db->fragTotalSize);
- buffer += count *2;
- }
- return 0;
-}
-
-/* return the total bytes that is copied */
-static inline int
-copy_adc_to_user(struct vrc5477_ac97_state *s,
- char * buffer,
- size_t count,
- int avail)
-{
- struct dmabuf *db = &s->dma_adc;
- int copyCount=0;
- int copyFragCount=0;
- int totalCopyCount = 0;
- int totalCopyFragCount = 0;
- unsigned long flags;
-
- /* adjust count to signel channel byte count */
- count >>= s->adcChannels - 1;
-
- /* we may have to "copy" twice as ring buffer wraps around */
- for (; (avail > 0) && (count > 0); ) {
- /* determine max possible copy count for single channel */
- copyCount = count;
- if (copyCount > avail) {
- copyCount = avail;
- }
- if (copyCount + db->nextOut > db->fragTotalSize) {
- copyCount = db->fragTotalSize - db->nextOut;
- ASSERT((copyCount % db->fragSize) == 0);
- }
-
- copyFragCount = (copyCount-1) >> db->fragShift;
- copyFragCount = (copyFragCount+1) << db->fragShift;
- ASSERT(copyFragCount >= copyCount);
-
- /* we copy differently based on adc channels */
- if (s->adcChannels == 1) {
- if (copy_to_user(buffer,
- db->lbuf + db->nextOut,
- copyCount))
- return -1;
- } else {
- /* *sigh* we have to mix two streams into one */
- if (copy_two_channel_adc_to_user(s, buffer, copyCount))
- return -1;
- }
-
- count -= copyCount;
- totalCopyCount += copyCount;
- avail -= copyFragCount;
- totalCopyFragCount += copyFragCount;
-
- buffer += copyCount << (s->adcChannels-1);
-
- db->nextOut += copyFragCount;
- if (db->nextOut >= db->fragTotalSize) {
- ASSERT(db->nextOut == db->fragTotalSize);
- db->nextOut = 0;
- }
-
- ASSERT((copyFragCount % db->fragSize) == 0);
- ASSERT( (count == 0) || (copyCount == copyFragCount));
- }
-
- spin_lock_irqsave(&s->lock, flags);
- db->count -= totalCopyFragCount;
- spin_unlock_irqrestore(&s->lock, flags);
-
- return totalCopyCount << (s->adcChannels-1);
-}
-
-static ssize_t
-vrc5477_ac97_read(struct file *file,
- char *buffer,
- size_t count,
- loff_t *ppos)
-{
- struct vrc5477_ac97_state *s =
- (struct vrc5477_ac97_state *)file->private_data;
- struct dmabuf *db = &s->dma_adc;
- ssize_t ret = 0;
- unsigned long flags;
- int copyCount;
- size_t avail;
-
- if (!access_ok(VERIFY_WRITE, buffer, count))
- return -EFAULT;
-
- ASSERT(db->ready);
-
- while (count > 0) {
- // wait for samples in capture buffer
- do {
- spin_lock_irqsave(&s->lock, flags);
- if (db->stopped)
- start_adc(s);
- avail = db->count;
- spin_unlock_irqrestore(&s->lock, flags);
- if (avail <= 0) {
- if (file->f_flags & O_NONBLOCK) {
- if (!ret)
- ret = -EAGAIN;
- return ret;
- }
- interruptible_sleep_on(&db->wait);
- if (signal_pending(current)) {
- if (!ret)
- ret = -ERESTARTSYS;
- return ret;
- }
- }
- } while (avail <= 0);
-
- ASSERT( (avail % db->fragSize) == 0);
- copyCount = copy_adc_to_user(s, buffer, count, avail);
- if (copyCount <=0 ) {
- if (!ret) ret = -EFAULT;
- return ret;
- }
-
- count -= copyCount;
- buffer += copyCount;
- ret += copyCount;
- } // while (count > 0)
-
- return ret;
-}
-
-static inline int
-copy_two_channel_dac_from_user(struct vrc5477_ac97_state *s,
- const char *buffer,
- int copyCount)
-{
- struct dmabuf *db = &s->dma_dac;
- int bufStart = db->nextIn;
-
- ASSERT(db->ready);
-
- for (; copyCount > 0; ) {
- int i;
- int count = copyCount;
- if (count > WORK_BUF_SIZE/2) count = WORK_BUF_SIZE/2;
- if (copy_from_user(s->workBuf, buffer, count*2)) {
- return -1;
- }
- for (i=0; i< count/2; i++) {
- *(u16*)(db->lbuf + bufStart + i*2) =
- s->workBuf[i].lchannel;
- *(u16*)(db->rbuf + bufStart + i*2) =
- s->workBuf[i].rchannel;
- }
-
- copyCount -= count;
- bufStart += count;
- ASSERT(bufStart <= db->fragTotalSize);
- buffer += count *2;
- }
- return 0;
-
-}
-
-/* return the total bytes that is copied */
-static inline int
-copy_dac_from_user(struct vrc5477_ac97_state *s,
- const char *buffer,
- size_t count,
- int avail)
-{
- struct dmabuf *db = &s->dma_dac;
- int copyCount=0;
- int copyFragCount=0;
- int totalCopyCount = 0;
- int totalCopyFragCount = 0;
- unsigned long flags;
-#if defined(VRC5477_AC97_VERBOSE_DEBUG)
- int i;
-#endif
-
- /* adjust count to signel channel byte count */
- count >>= s->dacChannels - 1;
-
- /* we may have to "copy" twice as ring buffer wraps around */
- for (; (avail > 0) && (count > 0); ) {
- /* determine max possible copy count for single channel */
- copyCount = count;
- if (copyCount > avail) {
- copyCount = avail;
- }
- if (copyCount + db->nextIn > db->fragTotalSize) {
- copyCount = db->fragTotalSize - db->nextIn;
- ASSERT(copyCount > 0);
- }
-
- copyFragCount = copyCount;
- ASSERT(copyFragCount >= copyCount);
-
- /* we copy differently based on the number channels */
- if (s->dacChannels == 1) {
- if (copy_from_user(db->lbuf + db->nextIn,
- buffer,
- copyCount))
- return -1;
- /* fill gaps with 0 */
- memset(db->lbuf + db->nextIn + copyCount,
- 0,
- copyFragCount - copyCount);
- } else {
- /* we have demux the stream into two separate ones */
- if (copy_two_channel_dac_from_user(s, buffer, copyCount))
- return -1;
- /* fill gaps with 0 */
- memset(db->lbuf + db->nextIn + copyCount,
- 0,
- copyFragCount - copyCount);
- memset(db->rbuf + db->nextIn + copyCount,
- 0,
- copyFragCount - copyCount);
- }
-
-#if defined(VRC5477_AC97_VERBOSE_DEBUG)
- for (i=0; i< copyFragCount; i+= db->fragSize) {
- *(u16*)(db->lbuf + db->nextIn + i) = inTicket ++;
- }
-#endif
-
- count -= copyCount;
- totalCopyCount += copyCount;
- avail -= copyFragCount;
- totalCopyFragCount += copyFragCount;
-
- buffer += copyCount << (s->dacChannels - 1);
-
- db->nextIn += copyFragCount;
- if (db->nextIn >= db->fragTotalSize) {
- ASSERT(db->nextIn == db->fragTotalSize);
- db->nextIn = 0;
- }
-
- ASSERT( (count == 0) || (copyCount == copyFragCount));
- }
-
- spin_lock_irqsave(&s->lock, flags);
- db->count += totalCopyFragCount;
- if (db->stopped) {
- start_dac(s);
- }
-
- /* nextIn should not be equal to nextOut unless we are full */
- ASSERT( ( (db->count == db->fragTotalSize) &&
- (db->nextIn == db->nextOut) ) ||
- ( (db->count < db->fragTotalSize) &&
- (db->nextIn != db->nextOut) ) );
-
- spin_unlock_irqrestore(&s->lock, flags);
-
- return totalCopyCount << (s->dacChannels-1);
-
-}
-
-static ssize_t vrc5477_ac97_write(struct file *file, const char *buffer,
- size_t count, loff_t *ppos)
-{
- struct vrc5477_ac97_state *s =
- (struct vrc5477_ac97_state *)file->private_data;
- struct dmabuf *db = &s->dma_dac;
- ssize_t ret;
- unsigned long flags;
- int copyCount, avail;
-
- if (!access_ok(VERIFY_READ, buffer, count))
- return -EFAULT;
- ret = 0;
-
- while (count > 0) {
- // wait for space in playback buffer
- do {
- spin_lock_irqsave(&s->lock, flags);
- avail = db->fragTotalSize - db->count;
- spin_unlock_irqrestore(&s->lock, flags);
- if (avail <= 0) {
- if (file->f_flags & O_NONBLOCK) {
- if (!ret)
- ret = -EAGAIN;
- return ret;
- }
- interruptible_sleep_on(&db->wait);
- if (signal_pending(current)) {
- if (!ret)
- ret = -ERESTARTSYS;
- return ret;
- }
- }
- } while (avail <= 0);
-
- copyCount = copy_dac_from_user(s, buffer, count, avail);
- if (copyCount < 0) {
- if (!ret) ret = -EFAULT;
- return ret;
- }
-
- count -= copyCount;
- buffer += copyCount;
- ret += copyCount;
- } // while (count > 0)
-
- return ret;
-}
-
-/* No kernel lock - we have our own spinlock */
-static unsigned int vrc5477_ac97_poll(struct file *file,
- struct poll_table_struct *wait)
-{
- struct vrc5477_ac97_state *s = (struct vrc5477_ac97_state *)file->private_data;
- unsigned long flags;
- unsigned int mask = 0;
-
- if (file->f_mode & FMODE_WRITE)
- poll_wait(file, &s->dma_dac.wait, wait);
- if (file->f_mode & FMODE_READ)
- poll_wait(file, &s->dma_adc.wait, wait);
- spin_lock_irqsave(&s->lock, flags);
- if (file->f_mode & FMODE_READ) {
- if (s->dma_adc.count >= (signed)s->dma_adc.fragSize)
- mask |= POLLIN | POLLRDNORM;
- }
- if (file->f_mode & FMODE_WRITE) {
- if ((signed)s->dma_dac.fragTotalSize >=
- s->dma_dac.count + (signed)s->dma_dac.fragSize)
- mask |= POLLOUT | POLLWRNORM;
- }
- spin_unlock_irqrestore(&s->lock, flags);
- return mask;
-}
-
-#ifdef VRC5477_AC97_DEBUG
-static struct ioctl_str_t {
- unsigned int cmd;
- const char* str;
-} ioctl_str[] = {
- {SNDCTL_DSP_RESET, "SNDCTL_DSP_RESET"},
- {SNDCTL_DSP_SYNC, "SNDCTL_DSP_SYNC"},
- {SNDCTL_DSP_SPEED, "SNDCTL_DSP_SPEED"},
- {SNDCTL_DSP_STEREO, "SNDCTL_DSP_STEREO"},
- {SNDCTL_DSP_GETBLKSIZE, "SNDCTL_DSP_GETBLKSIZE"},
- {SNDCTL_DSP_SETFMT, "SNDCTL_DSP_SETFMT"},
- {SNDCTL_DSP_SAMPLESIZE, "SNDCTL_DSP_SAMPLESIZE"},
- {SNDCTL_DSP_CHANNELS, "SNDCTL_DSP_CHANNELS"},
- {SOUND_PCM_WRITE_CHANNELS, "SOUND_PCM_WRITE_CHANNELS"},
- {SOUND_PCM_WRITE_FILTER, "SOUND_PCM_WRITE_FILTER"},
- {SNDCTL_DSP_POST, "SNDCTL_DSP_POST"},
- {SNDCTL_DSP_SUBDIVIDE, "SNDCTL_DSP_SUBDIVIDE"},
- {SNDCTL_DSP_SETFRAGMENT, "SNDCTL_DSP_SETFRAGMENT"},
- {SNDCTL_DSP_GETFMTS, "SNDCTL_DSP_GETFMTS"},
- {SNDCTL_DSP_GETOSPACE, "SNDCTL_DSP_GETOSPACE"},
- {SNDCTL_DSP_GETISPACE, "SNDCTL_DSP_GETISPACE"},
- {SNDCTL_DSP_NONBLOCK, "SNDCTL_DSP_NONBLOCK"},
- {SNDCTL_DSP_GETCAPS, "SNDCTL_DSP_GETCAPS"},
- {SNDCTL_DSP_GETTRIGGER, "SNDCTL_DSP_GETTRIGGER"},
- {SNDCTL_DSP_SETTRIGGER, "SNDCTL_DSP_SETTRIGGER"},
- {SNDCTL_DSP_GETIPTR, "SNDCTL_DSP_GETIPTR"},
- {SNDCTL_DSP_GETOPTR, "SNDCTL_DSP_GETOPTR"},
- {SNDCTL_DSP_MAPINBUF, "SNDCTL_DSP_MAPINBUF"},
- {SNDCTL_DSP_MAPOUTBUF, "SNDCTL_DSP_MAPOUTBUF"},
- {SNDCTL_DSP_SETSYNCRO, "SNDCTL_DSP_SETSYNCRO"},
- {SNDCTL_DSP_SETDUPLEX, "SNDCTL_DSP_SETDUPLEX"},
- {SNDCTL_DSP_GETODELAY, "SNDCTL_DSP_GETODELAY"},
- {SNDCTL_DSP_GETCHANNELMASK, "SNDCTL_DSP_GETCHANNELMASK"},
- {SNDCTL_DSP_BIND_CHANNEL, "SNDCTL_DSP_BIND_CHANNEL"},
- {OSS_GETVERSION, "OSS_GETVERSION"},
- {SOUND_PCM_READ_RATE, "SOUND_PCM_READ_RATE"},
- {SOUND_PCM_READ_CHANNELS, "SOUND_PCM_READ_CHANNELS"},
- {SOUND_PCM_READ_BITS, "SOUND_PCM_READ_BITS"},
- {SOUND_PCM_READ_FILTER, "SOUND_PCM_READ_FILTER"}
-};
-#endif
-
-static int vrc5477_ac97_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- struct vrc5477_ac97_state *s = (struct vrc5477_ac97_state *)file->private_data;
- unsigned long flags;
- audio_buf_info abinfo;
- int count;
- int val, ret;
-
-#ifdef VRC5477_AC97_DEBUG
- for (count = 0; count < ARRAY_SIZE(ioctl_str); count++) {
- if (ioctl_str[count].cmd == cmd)
- break;
- }
- if (count < ARRAY_SIZE(ioctl_str))
- printk(KERN_INFO PFX "ioctl %s\n", ioctl_str[count].str);
- else
- printk(KERN_INFO PFX "ioctl unknown, 0x%x\n", cmd);
-#endif
-
- switch (cmd) {
- case OSS_GETVERSION:
- return put_user(SOUND_VERSION, (int *)arg);
-
- case SNDCTL_DSP_SYNC:
- if (file->f_mode & FMODE_WRITE)
- return drain_dac(s, file->f_flags & O_NONBLOCK);
- return 0;
-
- case SNDCTL_DSP_SETDUPLEX:
- return 0;
-
- case SNDCTL_DSP_GETCAPS:
- return put_user(DSP_CAP_DUPLEX, (int *)arg);
-
- case SNDCTL_DSP_RESET:
- if (file->f_mode & FMODE_WRITE) {
- stop_dac(s);
- synchronize_irq(s->irq);
- s->dma_dac.count = 0;
- s->dma_dac.nextIn = s->dma_dac.nextOut = 0;
- }
- if (file->f_mode & FMODE_READ) {
- stop_adc(s);
- synchronize_irq(s->irq);
- s->dma_adc.count = 0;
- s->dma_adc.nextIn = s->dma_adc.nextOut = 0;
- }
- return 0;
-
- case SNDCTL_DSP_SPEED:
- if (get_user(val, (int *)arg))
- return -EFAULT;
- if (val >= 0) {
- if (file->f_mode & FMODE_READ) {
- stop_adc(s);
- set_adc_rate(s, val);
- if ((ret = prog_dmabuf_adc(s)))
- return ret;
- }
- if (file->f_mode & FMODE_WRITE) {
- stop_dac(s);
- set_dac_rate(s, val);
- if ((ret = prog_dmabuf_dac(s)))
- return ret;
- }
- }
- return put_user((file->f_mode & FMODE_READ) ?
- s->adcRate : s->dacRate, (int *)arg);
-
- case SNDCTL_DSP_STEREO:
- if (get_user(val, (int *)arg))
- return -EFAULT;
- if (file->f_mode & FMODE_READ) {
- stop_adc(s);
- if (val)
- s->adcChannels = 2;
- else
- s->adcChannels = 1;
- if ((ret = prog_dmabuf_adc(s)))
- return ret;
- }
- if (file->f_mode & FMODE_WRITE) {
- stop_dac(s);
- if (val)
- s->dacChannels = 2;
- else
- s->dacChannels = 1;
- if ((ret = prog_dmabuf_dac(s)))
- return ret;
- }
- return 0;
-
- case SNDCTL_DSP_CHANNELS:
- if (get_user(val, (int *)arg))
- return -EFAULT;
- if (val != 0) {
- if ( (val != 1) && (val != 2)) val = 2;
-
- if (file->f_mode & FMODE_READ) {
- stop_adc(s);
- s->dacChannels = val;
- if ((ret = prog_dmabuf_adc(s)))
- return ret;
- }
- if (file->f_mode & FMODE_WRITE) {
- stop_dac(s);
- s->dacChannels = val;
- if ((ret = prog_dmabuf_dac(s)))
- return ret;
- }
- }
- return put_user(val, (int *)arg);
-
- case SNDCTL_DSP_GETFMTS: /* Returns a mask */
- return put_user(AFMT_S16_LE, (int *)arg);
-
- case SNDCTL_DSP_SETFMT: /* Selects ONE fmt*/
- if (get_user(val, (int *)arg))
- return -EFAULT;
- if (val != AFMT_QUERY) {
- if (val != AFMT_S16_LE) return -EINVAL;
- if (file->f_mode & FMODE_READ) {
- stop_adc(s);
- if ((ret = prog_dmabuf_adc(s)))
- return ret;
- }
- if (file->f_mode & FMODE_WRITE) {
- stop_dac(s);
- if ((ret = prog_dmabuf_dac(s)))
- return ret;
- }
- } else {
- val = AFMT_S16_LE;
- }
- return put_user(val, (int *)arg);
-
- case SNDCTL_DSP_POST:
- return 0;
-
- case SNDCTL_DSP_GETTRIGGER:
- case SNDCTL_DSP_SETTRIGGER:
- /* NO trigger */
- return -EINVAL;
-
- case SNDCTL_DSP_GETOSPACE:
- if (!(file->f_mode & FMODE_WRITE))
- return -EINVAL;
- abinfo.fragsize = s->dma_dac.fragSize << (s->dacChannels-1);
- spin_lock_irqsave(&s->lock, flags);
- count = s->dma_dac.count;
- spin_unlock_irqrestore(&s->lock, flags);
- abinfo.bytes = (s->dma_dac.fragTotalSize - count) <<
- (s->dacChannels-1);
- abinfo.fragstotal = s->dma_dac.numFrag;
- abinfo.fragments = abinfo.bytes >> s->dma_dac.fragShift >>
- (s->dacChannels-1);
- return copy_to_user((void *)arg, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
-
- case SNDCTL_DSP_GETISPACE:
- if (!(file->f_mode & FMODE_READ))
- return -EINVAL;
- abinfo.fragsize = s->dma_adc.fragSize << (s->adcChannels-1);
- spin_lock_irqsave(&s->lock, flags);
- count = s->dma_adc.count;
- spin_unlock_irqrestore(&s->lock, flags);
- if (count < 0)
- count = 0;
- abinfo.bytes = count << (s->adcChannels-1);
- abinfo.fragstotal = s->dma_adc.numFrag;
- abinfo.fragments = (abinfo.bytes >> s->dma_adc.fragShift) >>
- (s->adcChannels-1);
- return copy_to_user((void *)arg, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
-
- case SNDCTL_DSP_NONBLOCK:
- file->f_flags |= O_NONBLOCK;
- return 0;
-
- case SNDCTL_DSP_GETODELAY:
- if (!(file->f_mode & FMODE_WRITE))
- return -EINVAL;
- spin_lock_irqsave(&s->lock, flags);
- count = s->dma_dac.count;
- spin_unlock_irqrestore(&s->lock, flags);
- return put_user(count, (int *)arg);
-
- case SNDCTL_DSP_GETIPTR:
- case SNDCTL_DSP_GETOPTR:
- /* we cannot get DMA ptr */
- return -EINVAL;
-
- case SNDCTL_DSP_GETBLKSIZE:
- if (file->f_mode & FMODE_WRITE)
- return put_user(s->dma_dac.fragSize << (s->dacChannels-1), (int *)arg);
- else
- return put_user(s->dma_adc.fragSize << (s->adcChannels-1), (int *)arg);
-
- case SNDCTL_DSP_SETFRAGMENT:
- /* we ignore fragment size request */
- return 0;
-
- case SNDCTL_DSP_SUBDIVIDE:
- /* what is this for? [jsun] */
- return 0;
-
- case SOUND_PCM_READ_RATE:
- return put_user((file->f_mode & FMODE_READ) ?
- s->adcRate : s->dacRate, (int *)arg);
-
- case SOUND_PCM_READ_CHANNELS:
- if (file->f_mode & FMODE_READ)
- return put_user(s->adcChannels, (int *)arg);
- else
- return put_user(s->dacChannels ? 2 : 1, (int *)arg);
-
- case SOUND_PCM_READ_BITS:
- return put_user(16, (int *)arg);
-
- case SOUND_PCM_WRITE_FILTER:
- case SNDCTL_DSP_SETSYNCRO:
- case SOUND_PCM_READ_FILTER:
- return -EINVAL;
- }
-
- return mixdev_ioctl(s->codec, cmd, arg);
-}
-
-
-static int vrc5477_ac97_open(struct inode *inode, struct file *file)
-{
- int minor = iminor(inode);
- DECLARE_WAITQUEUE(wait, current);
- unsigned long flags;
- struct list_head *list;
- struct vrc5477_ac97_state *s;
- int ret=0;
-
- nonseekable_open(inode, file);
- for (list = devs.next; ; list = list->next) {
- if (list == &devs)
- return -ENODEV;
- s = list_entry(list, struct vrc5477_ac97_state, devs);
- if (!((s->dev_audio ^ minor) & ~0xf))
- break;
- }
- file->private_data = s;
-
- /* wait for device to become free */
- mutex_lock(&s->open_mutex);
- while (s->open_mode & file->f_mode) {
-
- if (file->f_flags & O_NONBLOCK) {
- mutex_unlock(&s->open_mutex);
- return -EBUSY;
- }
- add_wait_queue(&s->open_wait, &wait);
- __set_current_state(TASK_INTERRUPTIBLE);
- mutex_unlock(&s->open_mutex);
- schedule();
- remove_wait_queue(&s->open_wait, &wait);
- set_current_state(TASK_RUNNING);
- if (signal_pending(current))
- return -ERESTARTSYS;
- mutex_lock(&s->open_mutex);
- }
-
- spin_lock_irqsave(&s->lock, flags);
-
- if (file->f_mode & FMODE_READ) {
- /* set default settings */
- set_adc_rate(s, 48000);
- s->adcChannels = 2;
-
- ret = prog_dmabuf_adc(s);
- if (ret) goto bailout;
- }
- if (file->f_mode & FMODE_WRITE) {
- /* set default settings */
- set_dac_rate(s, 48000);
- s->dacChannels = 2;
-
- ret = prog_dmabuf_dac(s);
- if (ret) goto bailout;
- }
-
- s->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
-
- bailout:
- spin_unlock_irqrestore(&s->lock, flags);
-
- mutex_unlock(&s->open_mutex);
- return ret;
-}
-
-static int vrc5477_ac97_release(struct inode *inode, struct file *file)
-{
- struct vrc5477_ac97_state *s =
- (struct vrc5477_ac97_state *)file->private_data;
-
- lock_kernel();
- if (file->f_mode & FMODE_WRITE)
- drain_dac(s, file->f_flags & O_NONBLOCK);
- mutex_lock(&s->open_mutex);
- if (file->f_mode & FMODE_WRITE) {
- stop_dac(s);
- dealloc_dmabuf(s, &s->dma_dac);
- }
- if (file->f_mode & FMODE_READ) {
- stop_adc(s);
- dealloc_dmabuf(s, &s->dma_adc);
- }
- s->open_mode &= (~file->f_mode) & (FMODE_READ|FMODE_WRITE);
- mutex_unlock(&s->open_mutex);
- wake_up(&s->open_wait);
- unlock_kernel();
- return 0;
-}
-
-static /*const*/ struct file_operations vrc5477_ac97_audio_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .read = vrc5477_ac97_read,
- .write = vrc5477_ac97_write,
- .poll = vrc5477_ac97_poll,
- .ioctl = vrc5477_ac97_ioctl,
- // .mmap = vrc5477_ac97_mmap,
- .open = vrc5477_ac97_open,
- .release = vrc5477_ac97_release,
-};
-
-
-/* --------------------------------------------------------------------- */
-
-
-/* --------------------------------------------------------------------- */
-
-/*
- * for debugging purposes, we'll create a proc device that dumps the
- * CODEC chipstate
- */
-
-#ifdef VRC5477_AC97_DEBUG
-
-struct {
- const char *regname;
- unsigned regaddr;
-} vrc5477_ac97_regs[] = {
- {"VRC5477_INT_STATUS", VRC5477_INT_STATUS},
- {"VRC5477_CODEC_WR", VRC5477_CODEC_WR},
- {"VRC5477_CODEC_RD", VRC5477_CODEC_RD},
- {"VRC5477_CTRL", VRC5477_CTRL},
- {"VRC5477_ACLINK_CTRL", VRC5477_ACLINK_CTRL},
- {"VRC5477_INT_MASK", VRC5477_INT_MASK},
- {"VRC5477_DAC1_CTRL", VRC5477_DAC1_CTRL},
- {"VRC5477_DAC1L", VRC5477_DAC1L},
- {"VRC5477_DAC1_BADDR", VRC5477_DAC1_BADDR},
- {"VRC5477_DAC2_CTRL", VRC5477_DAC2_CTRL},
- {"VRC5477_DAC2L", VRC5477_DAC2L},
- {"VRC5477_DAC2_BADDR", VRC5477_DAC2_BADDR},
- {"VRC5477_DAC3_CTRL", VRC5477_DAC3_CTRL},
- {"VRC5477_DAC3L", VRC5477_DAC3L},
- {"VRC5477_DAC3_BADDR", VRC5477_DAC3_BADDR},
- {"VRC5477_ADC1_CTRL", VRC5477_ADC1_CTRL},
- {"VRC5477_ADC1L", VRC5477_ADC1L},
- {"VRC5477_ADC1_BADDR", VRC5477_ADC1_BADDR},
- {"VRC5477_ADC2_CTRL", VRC5477_ADC2_CTRL},
- {"VRC5477_ADC2L", VRC5477_ADC2L},
- {"VRC5477_ADC2_BADDR", VRC5477_ADC2_BADDR},
- {"VRC5477_ADC3_CTRL", VRC5477_ADC3_CTRL},
- {"VRC5477_ADC3L", VRC5477_ADC3L},
- {"VRC5477_ADC3_BADDR", VRC5477_ADC3_BADDR},
- {NULL, 0x0}
-};
-
-static int proc_vrc5477_ac97_dump (char *buf, char **start, off_t fpos,
- int length, int *eof, void *data)
-{
- struct vrc5477_ac97_state *s;
- int cnt, len = 0;
-
- if (list_empty(&devs))
- return 0;
- s = list_entry(devs.next, struct vrc5477_ac97_state, devs);
-
- /* print out header */
- len += sprintf(buf + len, "\n\t\tVrc5477 Audio Debug\n\n");
-
- // print out digital controller state
- len += sprintf (buf + len, "NEC Vrc5477 Audio Controller registers\n");
- len += sprintf (buf + len, "---------------------------------\n");
- for (cnt=0; vrc5477_ac97_regs[cnt].regname != NULL; cnt++) {
- len+= sprintf (buf + len, "%-20s = %08x\n",
- vrc5477_ac97_regs[cnt].regname,
- inl(s->io + vrc5477_ac97_regs[cnt].regaddr));
- }
-
- /* print out driver state */
- len += sprintf (buf + len, "NEC Vrc5477 Audio driver states\n");
- len += sprintf (buf + len, "---------------------------------\n");
- len += sprintf (buf + len, "dacChannels = %d\n", s->dacChannels);
- len += sprintf (buf + len, "adcChannels = %d\n", s->adcChannels);
- len += sprintf (buf + len, "dacRate = %d\n", s->dacRate);
- len += sprintf (buf + len, "adcRate = %d\n", s->adcRate);
-
- len += sprintf (buf + len, "dma_dac is %s ready\n",
- s->dma_dac.ready? "" : "not");
- if (s->dma_dac.ready) {
- len += sprintf (buf + len, "dma_dac is %s stopped.\n",
- s->dma_dac.stopped? "" : "not");
- len += sprintf (buf + len, "dma_dac.fragSize = %x\n",
- s->dma_dac.fragSize);
- len += sprintf (buf + len, "dma_dac.fragShift = %x\n",
- s->dma_dac.fragShift);
- len += sprintf (buf + len, "dma_dac.numFrag = %x\n",
- s->dma_dac.numFrag);
- len += sprintf (buf + len, "dma_dac.fragTotalSize = %x\n",
- s->dma_dac.fragTotalSize);
- len += sprintf (buf + len, "dma_dac.nextIn = %x\n",
- s->dma_dac.nextIn);
- len += sprintf (buf + len, "dma_dac.nextOut = %x\n",
- s->dma_dac.nextOut);
- len += sprintf (buf + len, "dma_dac.count = %x\n",
- s->dma_dac.count);
- }
-
- len += sprintf (buf + len, "dma_adc is %s ready\n",
- s->dma_adc.ready? "" : "not");
- if (s->dma_adc.ready) {
- len += sprintf (buf + len, "dma_adc is %s stopped.\n",
- s->dma_adc.stopped? "" : "not");
- len += sprintf (buf + len, "dma_adc.fragSize = %x\n",
- s->dma_adc.fragSize);
- len += sprintf (buf + len, "dma_adc.fragShift = %x\n",
- s->dma_adc.fragShift);
- len += sprintf (buf + len, "dma_adc.numFrag = %x\n",
- s->dma_adc.numFrag);
- len += sprintf (buf + len, "dma_adc.fragTotalSize = %x\n",
- s->dma_adc.fragTotalSize);
- len += sprintf (buf + len, "dma_adc.nextIn = %x\n",
- s->dma_adc.nextIn);
- len += sprintf (buf + len, "dma_adc.nextOut = %x\n",
- s->dma_adc.nextOut);
- len += sprintf (buf + len, "dma_adc.count = %x\n",
- s->dma_adc.count);
- }
-
- /* print out CODEC state */
- len += sprintf (buf + len, "\nAC97 CODEC registers\n");
- len += sprintf (buf + len, "----------------------\n");
- for (cnt=0; cnt <= 0x7e; cnt = cnt +2)
- len+= sprintf (buf + len, "reg %02x = %04x\n",
- cnt, rdcodec(s->codec, cnt));
-
- if (fpos >=len){
- *start = buf;
- *eof =1;
- return 0;
- }
- *start = buf + fpos;
- if ((len -= fpos) > length)
- return length;
- *eof =1;
- return len;
-
-}
-#endif /* VRC5477_AC97_DEBUG */
-
-/* --------------------------------------------------------------------- */
-
-/* maximum number of devices; only used for command line params */
-#define NR_DEVICE 5
-
-static unsigned int devindex;
-
-MODULE_AUTHOR("Monta Vista Software, jsun@mvista.com or jsun@junsun.net");
-MODULE_DESCRIPTION("NEC Vrc5477 audio (AC97) Driver");
-MODULE_LICENSE("GPL");
-
-static int __devinit vrc5477_ac97_probe(struct pci_dev *pcidev,
- const struct pci_device_id *pciid)
-{
- struct vrc5477_ac97_state *s;
-#ifdef VRC5477_AC97_DEBUG
- char proc_str[80];
-#endif
-
- if (pcidev->irq == 0)
- return -1;
-
- if (!(s = kzalloc(sizeof(struct vrc5477_ac97_state), GFP_KERNEL))) {
- printk(KERN_ERR PFX "alloc of device struct failed\n");
- return -1;
- }
-
- init_waitqueue_head(&s->dma_adc.wait);
- init_waitqueue_head(&s->dma_dac.wait);
- init_waitqueue_head(&s->open_wait);
- mutex_init(&s->open_mutex);
- spin_lock_init(&s->lock);
-
- s->dev = pcidev;
- s->io = pci_resource_start(pcidev, 0);
- s->irq = pcidev->irq;
-
- s->codec = ac97_alloc_codec();
-
- s->codec->private_data = s;
- s->codec->id = 0;
- s->codec->codec_read = rdcodec;
- s->codec->codec_write = wrcodec;
- s->codec->codec_wait = waitcodec;
-
- /* setting some other default values such as
- * adcChannels, adcRate is done in open() so that
- * no persistent state across file opens.
- */
-
- /* test if get response from ac97, if not return */
- if (ac97_codec_not_present(s->codec)) {
- printk(KERN_ERR PFX "no ac97 codec\n");
- goto err_region;
-
- }
-
- /* test if get response from ac97, if not return */
- if (ac97_codec_not_present(&(s->codec))) {
- printk(KERN_ERR PFX "no ac97 codec\n");
- goto err_region;
-
- }
-
- if (!request_region(s->io, pci_resource_len(pcidev,0),
- VRC5477_AC97_MODULE_NAME)) {
- printk(KERN_ERR PFX "io ports %#lx->%#lx in use\n",
- s->io, s->io + pci_resource_len(pcidev,0)-1);
- goto err_region;
- }
- if (request_irq(s->irq, vrc5477_ac97_interrupt, IRQF_DISABLED,
- VRC5477_AC97_MODULE_NAME, s)) {
- printk(KERN_ERR PFX "irq %u in use\n", s->irq);
- goto err_irq;
- }
-
- printk(KERN_INFO PFX "IO at %#lx, IRQ %d\n", s->io, s->irq);
-
- /* register devices */
- if ((s->dev_audio = register_sound_dsp(&vrc5477_ac97_audio_fops, -1)) < 0)
- goto err_dev1;
- if ((s->codec->dev_mixer =
- register_sound_mixer(&vrc5477_ac97_mixer_fops, -1)) < 0)
- goto err_dev2;
-
-#ifdef VRC5477_AC97_DEBUG
- /* initialize the debug proc device */
- s->ps = create_proc_read_entry(VRC5477_AC97_MODULE_NAME, 0, NULL,
- proc_vrc5477_ac97_dump, NULL);
-#endif /* VRC5477_AC97_DEBUG */
-
- /* enable pci io and bus mastering */
- if (pci_enable_device(pcidev))
- goto err_dev3;
- pci_set_master(pcidev);
-
- /* cold reset the AC97 */
- outl(VRC5477_ACLINK_CTRL_RST_ON | VRC5477_ACLINK_CTRL_RST_TIME,
- s->io + VRC5477_ACLINK_CTRL);
- while (inl(s->io + VRC5477_ACLINK_CTRL) & VRC5477_ACLINK_CTRL_RST_ON);
-
- /* codec init */
- if (!ac97_probe_codec(s->codec))
- goto err_dev3;
-
-#ifdef VRC5477_AC97_DEBUG
- sprintf(proc_str, "driver/%s/%d/ac97",
- VRC5477_AC97_MODULE_NAME, s->codec->id);
- s->ac97_ps = create_proc_read_entry (proc_str, 0, NULL,
- ac97_read_proc, s->codec);
- /* TODO : why this proc file does not show up? */
-#endif
-
- /* Try to enable variable rate audio mode. */
- wrcodec(s->codec, AC97_EXTENDED_STATUS,
- rdcodec(s->codec, AC97_EXTENDED_STATUS) | AC97_EXTSTAT_VRA);
- /* Did we enable it? */
- if(rdcodec(s->codec, AC97_EXTENDED_STATUS) & AC97_EXTSTAT_VRA)
- s->extended_status |= AC97_EXTSTAT_VRA;
- else {
- s->dacRate = 48000;
- printk(KERN_INFO PFX "VRA mode not enabled; rate fixed at %d.",
- s->dacRate);
- }
-
- /* let us get the default volumne louder */
- wrcodec(s->codec, 0x2, 0x1010); /* master volume, middle */
- wrcodec(s->codec, 0xc, 0x10); /* phone volume, middle */
- // wrcodec(s->codec, 0xe, 0x10); /* misc volume, middle */
- wrcodec(s->codec, 0x10, 0x8000); /* line-in 2 line-out disable */
- wrcodec(s->codec, 0x18, 0x0707); /* PCM out (line out) middle */
-
-
- /* by default we select line in the input */
- wrcodec(s->codec, 0x1a, 0x0404);
- wrcodec(s->codec, 0x1c, 0x0f0f);
- wrcodec(s->codec, 0x1e, 0x07);
-
- /* enable the master interrupt but disable all others */
- outl(VRC5477_INT_MASK_NMASK, s->io + VRC5477_INT_MASK);
-
- /* store it in the driver field */
- pci_set_drvdata(pcidev, s);
- pcidev->dma_mask = 0xffffffff;
- /* put it into driver list */
- list_add_tail(&s->devs, &devs);
- /* increment devindex */
- if (devindex < NR_DEVICE-1)
- devindex++;
- return 0;
-
- err_dev3:
- unregister_sound_mixer(s->codec->dev_mixer);
- err_dev2:
- unregister_sound_dsp(s->dev_audio);
- err_dev1:
- printk(KERN_ERR PFX "cannot register misc device\n");
- free_irq(s->irq, s);
- err_irq:
- release_region(s->io, pci_resource_len(pcidev,0));
- err_region:
- ac97_release_codec(codec);
- kfree(s);
- return -1;
-}
-
-static void __devexit vrc5477_ac97_remove(struct pci_dev *dev)
-{
- struct vrc5477_ac97_state *s = pci_get_drvdata(dev);
-
- if (!s)
- return;
- list_del(&s->devs);
-
-#ifdef VRC5477_AC97_DEBUG
- if (s->ps)
- remove_proc_entry(VRC5477_AC97_MODULE_NAME, NULL);
-#endif /* VRC5477_AC97_DEBUG */
-
- synchronize_irq();
- free_irq(s->irq, s);
- release_region(s->io, pci_resource_len(dev,0));
- unregister_sound_dsp(s->dev_audio);
- unregister_sound_mixer(s->codec->dev_mixer);
- ac97_release_codec(s->codec);
- kfree(s);
- pci_set_drvdata(dev, NULL);
-}
-
-
-static struct pci_device_id id_table[] = {
- { PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_VRC5477_AC97,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0 },
- { 0, }
-};
-
-MODULE_DEVICE_TABLE(pci, id_table);
-
-static struct pci_driver vrc5477_ac97_driver = {
- .name = VRC5477_AC97_MODULE_NAME,
- .id_table = id_table,
- .probe = vrc5477_ac97_probe,
- .remove = __devexit_p(vrc5477_ac97_remove)
-};
-
-static int __init init_vrc5477_ac97(void)
-{
- printk("Vrc5477 AC97 driver: version v0.2 time " __TIME__ " " __DATE__ " by Jun Sun\n");
- return pci_register_driver(&vrc5477_ac97_driver);
-}
-
-static void __exit cleanup_vrc5477_ac97(void)
-{
- printk(KERN_INFO PFX "unloading\n");
- pci_unregister_driver(&vrc5477_ac97_driver);
-}
-
-module_init(init_vrc5477_ac97);
-module_exit(cleanup_vrc5477_ac97);
-
projects / linux-2.6 / commitdiff