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linux/sound/oss/forte.c

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/*
* forte.c - ForteMedia FM801 OSS Driver
*
* Written by Martin K. Petersen <mkp@mkp.net>
* Copyright (C) 2002 Hewlett-Packard Company
* Portions Copyright (C) 2003 Martin K. Petersen
*
* Latest version: http://mkp.net/forte/
*
* Based upon the ALSA FM801 driver by Jaroslav Kysela and OSS drivers
* by Thomas Sailer, Alan Cox, Zach Brown, and Jeff Garzik. Thanks
* guys!
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/poll.h>
#include <linux/sound.h>
#include <linux/ac97_codec.h>
#include <linux/interrupt.h>
#include <linux/proc_fs.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#define DRIVER_NAME "forte"
#define DRIVER_VERSION "$Id: forte.c,v 1.63 2003/03/01 05:32:42 mkp Exp $"
#define PFX DRIVER_NAME ": "
#undef M_DEBUG
#ifdef M_DEBUG
#define DPRINTK(args...) printk(KERN_WARNING args)
#else
#define DPRINTK(args...)
#endif
/* Card capabilities */
#define FORTE_CAPS (DSP_CAP_MMAP | DSP_CAP_TRIGGER)
/* Supported audio formats */
#define FORTE_FMTS (AFMT_U8 | AFMT_S16_LE)
/* Buffers */
#define FORTE_MIN_FRAG_SIZE 256
#define FORTE_MAX_FRAG_SIZE PAGE_SIZE
#define FORTE_DEF_FRAG_SIZE 256
#define FORTE_MIN_FRAGMENTS 2
#define FORTE_MAX_FRAGMENTS 256
#define FORTE_DEF_FRAGMENTS 2
#define FORTE_MIN_BUF_MSECS 500
#define FORTE_MAX_BUF_MSECS 1000
/* PCI BARs */
#define FORTE_PCM_VOL 0x00 /* PCM Output Volume */
#define FORTE_FM_VOL 0x02 /* FM Output Volume */
#define FORTE_I2S_VOL 0x04 /* I2S Volume */
#define FORTE_REC_SRC 0x06 /* Record Source */
#define FORTE_PLY_CTRL 0x08 /* Playback Control */
#define FORTE_PLY_COUNT 0x0a /* Playback Count */
#define FORTE_PLY_BUF1 0x0c /* Playback Buffer I */
#define FORTE_PLY_BUF2 0x10 /* Playback Buffer II */
#define FORTE_CAP_CTRL 0x14 /* Capture Control */
#define FORTE_CAP_COUNT 0x16 /* Capture Count */
#define FORTE_CAP_BUF1 0x18 /* Capture Buffer I */
#define FORTE_CAP_BUF2 0x1c /* Capture Buffer II */
#define FORTE_CODEC_CTRL 0x22 /* Codec Control */
#define FORTE_I2S_MODE 0x24 /* I2S Mode Control */
#define FORTE_VOLUME 0x26 /* Volume Up/Down/Mute Status */
#define FORTE_I2C_CTRL 0x29 /* I2C Control */
#define FORTE_AC97_CMD 0x2a /* AC'97 Command */
#define FORTE_AC97_DATA 0x2c /* AC'97 Data */
#define FORTE_MPU401_DATA 0x30 /* MPU401 Data */
#define FORTE_MPU401_CMD 0x31 /* MPU401 Command */
#define FORTE_GPIO_CTRL 0x52 /* General Purpose I/O Control */
#define FORTE_GEN_CTRL 0x54 /* General Control */
#define FORTE_IRQ_MASK 0x56 /* Interrupt Mask */
#define FORTE_IRQ_STATUS 0x5a /* Interrupt Status */
#define FORTE_OPL3_BANK0 0x68 /* OPL3 Status Read / Bank 0 Write */
#define FORTE_OPL3_DATA0 0x69 /* OPL3 Data 0 Write */
#define FORTE_OPL3_BANK1 0x6a /* OPL3 Bank 1 Write */
#define FORTE_OPL3_DATA1 0x6b /* OPL3 Bank 1 Write */
#define FORTE_POWERDOWN 0x70 /* Blocks Power Down Control */
#define FORTE_CAP_OFFSET FORTE_CAP_CTRL - FORTE_PLY_CTRL
#define FORTE_AC97_ADDR_SHIFT 10
/* Playback and record control register bits */
#define FORTE_BUF1_LAST (1<<1)
#define FORTE_BUF2_LAST (1<<2)
#define FORTE_START (1<<5)
#define FORTE_PAUSE (1<<6)
#define FORTE_IMMED_STOP (1<<7)
#define FORTE_RATE_SHIFT 8
#define FORTE_RATE_MASK (15 << FORTE_RATE_SHIFT)
#define FORTE_CHANNELS_4 (1<<12) /* Playback only */
#define FORTE_CHANNELS_6 (2<<12) /* Playback only */
#define FORTE_CHANNELS_6MS (3<<12) /* Playback only */
#define FORTE_CHANNELS_MASK (3<<12)
#define FORTE_16BIT (1<<14)
#define FORTE_STEREO (1<<15)
/* IRQ status bits */
#define FORTE_IRQ_PLAYBACK (1<<8)
#define FORTE_IRQ_CAPTURE (1<<9)
#define FORTE_IRQ_VOLUME (1<<14)
#define FORTE_IRQ_MPU (1<<15)
/* CODEC control */
#define FORTE_CC_CODEC_RESET (1<<5)
#define FORTE_CC_AC97_RESET (1<<6)
/* AC97 cmd */
#define FORTE_AC97_WRITE (0<<7)
#define FORTE_AC97_READ (1<<7)
#define FORTE_AC97_DP_INVALID (0<<8)
#define FORTE_AC97_DP_VALID (1<<8)
#define FORTE_AC97_PORT_RDY (0<<9)
#define FORTE_AC97_PORT_BSY (1<<9)
struct forte_channel {
const char *name;
unsigned short ctrl; /* Ctrl BAR contents */
unsigned long iobase; /* Ctrl BAR address */
wait_queue_head_t wait;
void *buf; /* Buffer */
dma_addr_t buf_handle; /* Buffer handle */
unsigned int record;
unsigned int format;
unsigned int rate;
unsigned int stereo;
unsigned int frag_sz; /* Current fragment size */
unsigned int frag_num; /* Current # of fragments */
unsigned int frag_msecs; /* Milliseconds per frag */
unsigned int buf_sz; /* Current buffer size */
unsigned int hwptr; /* Tail */
unsigned int swptr; /* Head */
unsigned int filled_frags; /* Fragments currently full */
unsigned int next_buf; /* Index of next buffer */
unsigned int active; /* Channel currently in use */
unsigned int mapped; /* mmap */
unsigned int buf_pages; /* Real size of buffer */
unsigned int nr_irqs; /* Number of interrupts */
unsigned int bytes; /* Total bytes */
unsigned int residue; /* Partial fragment */
};
struct forte_chip {
struct pci_dev *pci_dev;
unsigned long iobase;
int irq;
struct semaphore open_sem; /* Device access */
spinlock_t lock; /* State */
spinlock_t ac97_lock;
struct ac97_codec *ac97;
int multichannel;
int dsp; /* OSS handle */
int trigger; /* mmap I/O trigger */
struct forte_channel play;
struct forte_channel rec;
};
static int channels[] = { 2, 4, 6, };
static int rates[] = { 5500, 8000, 9600, 11025, 16000, 19200,
22050, 32000, 38400, 44100, 48000, };
static struct forte_chip *forte;
static int found;
/* AC97 Codec -------------------------------------------------------------- */
/**
* forte_ac97_wait:
* @chip: fm801 instance whose AC97 codec to wait on
*
* FIXME:
* Stop busy-waiting
*/
static inline int
forte_ac97_wait (struct forte_chip *chip)
{
int i = 10000;
while ( (inw (chip->iobase + FORTE_AC97_CMD) & FORTE_AC97_PORT_BSY)
&& i-- )
cpu_relax();
return i == 0;
}
/**
* forte_ac97_read:
* @codec: AC97 codec to read from
* @reg: register to read
*/
static u16
forte_ac97_read (struct ac97_codec *codec, u8 reg)
{
u16 ret = 0;
struct forte_chip *chip = codec->private_data;
spin_lock (&chip->ac97_lock);
/* Knock, knock */
if (forte_ac97_wait (chip)) {
printk (KERN_ERR PFX "ac97_read: Serial bus busy\n");
goto out;
}
/* Send read command */
outw (reg | (1<<7), chip->iobase + FORTE_AC97_CMD);
if (forte_ac97_wait (chip)) {
printk (KERN_ERR PFX "ac97_read: Bus busy reading reg 0x%x\n",
reg);
goto out;
}
/* Sanity checking */
if (inw (chip->iobase + FORTE_AC97_CMD) & FORTE_AC97_DP_INVALID) {
printk (KERN_ERR PFX "ac97_read: Invalid data port");
goto out;
}
/* Fetch result */
ret = inw (chip->iobase + FORTE_AC97_DATA);
out:
spin_unlock (&chip->ac97_lock);
return ret;
}
/**
* forte_ac97_write:
* @codec: AC97 codec to send command to
* @reg: register to write
* @val: value to write
*/
static void
forte_ac97_write (struct ac97_codec *codec, u8 reg, u16 val)
{
struct forte_chip *chip = codec->private_data;
spin_lock (&chip->ac97_lock);
/* Knock, knock */
if (forte_ac97_wait (chip)) {
printk (KERN_ERR PFX "ac97_write: Serial bus busy\n");
goto out;
}
outw (val, chip->iobase + FORTE_AC97_DATA);
outb (reg | FORTE_AC97_WRITE, chip->iobase + FORTE_AC97_CMD);
/* Wait for completion */
if (forte_ac97_wait (chip)) {
printk (KERN_ERR PFX "ac97_write: Bus busy after write\n");
goto out;
}
out:
spin_unlock (&chip->ac97_lock);
}
/* Mixer ------------------------------------------------------------------- */
/**
* forte_mixer_open:
* @inode:
* @file:
*/
static int
forte_mixer_open (struct inode *inode, struct file *file)
{
struct forte_chip *chip = forte;
file->private_data = chip->ac97;
return 0;
}
/**
* forte_mixer_release:
* @inode:
* @file:
*/
static int
forte_mixer_release (struct inode *inode, struct file *file)
{
/* We will welease Wodewick */
return 0;
}
/**
* forte_mixer_ioctl:
* @inode:
* @file:
*/
static int
forte_mixer_ioctl (struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct ac97_codec *codec = (struct ac97_codec *) file->private_data;
return codec->mixer_ioctl (codec, cmd, arg);
}
static struct file_operations forte_mixer_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.ioctl = forte_mixer_ioctl,
.open = forte_mixer_open,
.release = forte_mixer_release,
};
/* Channel ----------------------------------------------------------------- */
/**
* forte_channel_reset:
* @channel: Channel to reset
*
* Locking: Must be called with lock held.
*/
static void
forte_channel_reset (struct forte_channel *channel)
{
if (!channel || !channel->iobase)
return;
DPRINTK ("%s: channel = %s\n", __FUNCTION__, channel->name);
channel->ctrl &= ~FORTE_START;
outw (channel->ctrl, channel->iobase + FORTE_PLY_CTRL);
/* We always play at least two fragments, hence these defaults */
channel->hwptr = channel->frag_sz;
channel->next_buf = 1;
channel->swptr = 0;
channel->filled_frags = 0;
channel->active = 0;
channel->bytes = 0;
channel->nr_irqs = 0;
channel->mapped = 0;
channel->residue = 0;
}
/**
* forte_channel_start:
* @channel: Channel to start (record/playback)
*
* Locking: Must be called with lock held.
*/
static void inline
forte_channel_start (struct forte_channel *channel)
{
if (!channel || !channel->iobase || channel->active)
return;
channel->ctrl &= ~(FORTE_PAUSE | FORTE_BUF1_LAST | FORTE_BUF2_LAST
| FORTE_IMMED_STOP);
channel->ctrl |= FORTE_START;
channel->active = 1;
outw (channel->ctrl, channel->iobase + FORTE_PLY_CTRL);
}
/**
* forte_channel_stop:
* @channel: Channel to stop
*
* Locking: Must be called with lock held.
*/
static void inline
forte_channel_stop (struct forte_channel *channel)
{
if (!channel || !channel->iobase)
return;
channel->ctrl &= ~(FORTE_START | FORTE_PAUSE);
channel->ctrl |= FORTE_IMMED_STOP;
channel->active = 0;
outw (channel->ctrl, channel->iobase + FORTE_PLY_CTRL);
}
/**
* forte_channel_pause:
* @channel: Channel to pause
*
* Locking: Must be called with lock held.
*/
static void inline
forte_channel_pause (struct forte_channel *channel)
{
if (!channel || !channel->iobase)
return;
channel->ctrl |= FORTE_PAUSE;
channel->active = 0;
outw (channel->ctrl, channel->iobase + FORTE_PLY_CTRL);
}
/**
* forte_channel_rate:
* @channel: Channel whose rate to set. Playback and record are
* independent.
* @rate: Channel rate in Hz
*
* Locking: Must be called with lock held.
*/
static int
forte_channel_rate (struct forte_channel *channel, unsigned int rate)
{
int new_rate;
if (!channel || !channel->iobase)
return -EINVAL;
/* The FM801 only supports a handful of fixed frequencies.
* We find the value closest to what userland requested.
*/
if (rate <= 6250) { rate = 5500; new_rate = 0; }
else if (rate <= 8800) { rate = 8000; new_rate = 1; }
else if (rate <= 10312) { rate = 9600; new_rate = 2; }
else if (rate <= 13512) { rate = 11025; new_rate = 3; }
else if (rate <= 17600) { rate = 16000; new_rate = 4; }
else if (rate <= 20625) { rate = 19200; new_rate = 5; }
else if (rate <= 27025) { rate = 22050; new_rate = 6; }
else if (rate <= 35200) { rate = 32000; new_rate = 7; }
else if (rate <= 41250) { rate = 38400; new_rate = 8; }
else if (rate <= 46050) { rate = 44100; new_rate = 9; }
else { rate = 48000; new_rate = 10; }
channel->ctrl &= ~FORTE_RATE_MASK;
channel->ctrl |= new_rate << FORTE_RATE_SHIFT;
channel->rate = rate;
DPRINTK ("%s: %s rate = %d\n", __FUNCTION__, channel->name, rate);
return rate;
}
/**
* forte_channel_format:
* @channel: Channel whose audio format to set
* @format: OSS format ID
*
* Locking: Must be called with lock held.
*/
static int
forte_channel_format (struct forte_channel *channel, int format)
{
if (!channel || !channel->iobase)
return -EINVAL;
switch (format) {
case AFMT_QUERY:
break;
case AFMT_U8:
channel->ctrl &= ~FORTE_16BIT;
channel->format = AFMT_U8;
break;
case AFMT_S16_LE:
default:
channel->ctrl |= FORTE_16BIT;
channel->format = AFMT_S16_LE;
break;
}
DPRINTK ("%s: %s want %d format, got %d\n", __FUNCTION__, channel->name,
format, channel->format);
return channel->format;
}
/**
* forte_channel_stereo:
* @channel: Channel to toggle
* @stereo: 0 for Mono, 1 for Stereo
*
* Locking: Must be called with lock held.
*/
static int
forte_channel_stereo (struct forte_channel *channel, unsigned int stereo)
{
int ret;
if (!channel || !channel->iobase)
return -EINVAL;
DPRINTK ("%s: %s stereo = %d\n", __FUNCTION__, channel->name, stereo);
switch (stereo) {
case 0:
channel->ctrl &= ~(FORTE_STEREO | FORTE_CHANNELS_MASK);
channel-> stereo = stereo;
ret = stereo;
break;
case 1:
channel->ctrl &= ~FORTE_CHANNELS_MASK;
channel->ctrl |= FORTE_STEREO;
channel-> stereo = stereo;
ret = stereo;
break;
default:
DPRINTK ("Unsupported channel format");
ret = -EINVAL;
break;
}
return ret;
}
/**
* forte_channel_buffer:
* @channel: Channel whose buffer to set up
*
* Locking: Must be called with lock held.
*/
static void
forte_channel_buffer (struct forte_channel *channel, int sz, int num)
{
unsigned int msecs, shift;
/* Go away, I'm busy */
if (channel->filled_frags || channel->bytes)
return;
/* Fragment size must be a power of 2 */
shift = 0; sz++;
while (sz >>= 1)
shift++;
channel->frag_sz = 1 << shift;
/* Round fragment size to something reasonable */
if (channel->frag_sz < FORTE_MIN_FRAG_SIZE)
channel->frag_sz = FORTE_MIN_FRAG_SIZE;
if (channel->frag_sz > FORTE_MAX_FRAG_SIZE)
channel->frag_sz = FORTE_MAX_FRAG_SIZE;
/* Find fragment length in milliseconds */
msecs = channel->frag_sz /
(channel->format == AFMT_S16_LE ? 2 : 1) /
(channel->stereo ? 2 : 1) /
(channel->rate / 1000);
channel->frag_msecs = msecs;
/* Pick a suitable number of fragments */
if (msecs * num < FORTE_MIN_BUF_MSECS)
num = FORTE_MIN_BUF_MSECS / msecs;
if (msecs * num > FORTE_MAX_BUF_MSECS)
num = FORTE_MAX_BUF_MSECS / msecs;
/* Fragment number must be a power of 2 */
shift = 0;
while (num >>= 1)
shift++;
channel->frag_num = 1 << (shift + 1);
/* Round fragment number to something reasonable */
if (channel->frag_num < FORTE_MIN_FRAGMENTS)
channel->frag_num = FORTE_MIN_FRAGMENTS;
if (channel->frag_num > FORTE_MAX_FRAGMENTS)
channel->frag_num = FORTE_MAX_FRAGMENTS;
channel->buf_sz = channel->frag_sz * channel->frag_num;
DPRINTK ("%s: %s frag_sz = %d, frag_num = %d, buf_sz = %d\n",
__FUNCTION__, channel->name, channel->frag_sz,
channel->frag_num, channel->buf_sz);
}
/**
* forte_channel_prep:
* @channel: Channel whose buffer to prepare
*
* Locking: Lock held.
*/
static void
forte_channel_prep (struct forte_channel *channel)
{
struct page *page;
int i;
if (channel->buf)
return;
forte_channel_buffer (channel, channel->frag_sz, channel->frag_num);
channel->buf_pages = channel->buf_sz >> PAGE_SHIFT;
if (channel->buf_sz % PAGE_SIZE)
channel->buf_pages++;
DPRINTK ("%s: %s frag_sz = %d, frag_num = %d, buf_sz = %d, pg = %d\n",
__FUNCTION__, channel->name, channel->frag_sz,
channel->frag_num, channel->buf_sz, channel->buf_pages);
/* DMA buffer */
channel->buf = pci_alloc_consistent (forte->pci_dev,
channel->buf_pages * PAGE_SIZE,
&channel->buf_handle);
if (!channel->buf || !channel->buf_handle)
BUG();
page = virt_to_page (channel->buf);
/* FIXME: can this go away ? */
for (i = 0 ; i < channel->buf_pages ; i++)
SetPageReserved(page++);
/* Prep buffer registers */
outw (channel->frag_sz - 1, channel->iobase + FORTE_PLY_COUNT);
outl (channel->buf_handle, channel->iobase + FORTE_PLY_BUF1);
outl (channel->buf_handle + channel->frag_sz,
channel->iobase + FORTE_PLY_BUF2);
/* Reset hwptr */
channel->hwptr = channel->frag_sz;
channel->next_buf = 1;
DPRINTK ("%s: %s buffer @ %p (%p)\n", __FUNCTION__, channel->name,
channel->buf, channel->buf_handle);
}
/**
* forte_channel_drain:
* @chip:
* @channel:
*
* Locking: Don't hold the lock.
*/
static inline int
forte_channel_drain (struct forte_channel *channel)
{
DECLARE_WAITQUEUE (wait, current);
unsigned long flags;
DPRINTK ("%s\n", __FUNCTION__);
if (channel->mapped) {
spin_lock_irqsave (&forte->lock, flags);
forte_channel_stop (channel);
spin_unlock_irqrestore (&forte->lock, flags);
return 0;
}
spin_lock_irqsave (&forte->lock, flags);
add_wait_queue (&channel->wait, &wait);
for (;;) {
if (channel->active == 0 || channel->filled_frags == 1)
break;
spin_unlock_irqrestore (&forte->lock, flags);
__set_current_state (TASK_INTERRUPTIBLE);
schedule();
spin_lock_irqsave (&forte->lock, flags);
}
forte_channel_stop (channel);
forte_channel_reset (channel);
set_current_state (TASK_RUNNING);
remove_wait_queue (&channel->wait, &wait);
spin_unlock_irqrestore (&forte->lock, flags);
return 0;
}
/**
* forte_channel_init:
* @chip: Forte chip instance the channel hangs off
* @channel: Channel to initialize
*
* Description:
* Initializes a channel, sets defaults, and allocates
* buffers.
*
* Locking: No lock held.
*/
static int
forte_channel_init (struct forte_chip *chip, struct forte_channel *channel)
{
DPRINTK ("%s: chip iobase @ %p\n", __FUNCTION__, (void *)chip->iobase);
spin_lock_irq (&chip->lock);
memset (channel, 0x0, sizeof (*channel));
if (channel == &chip->play) {
channel->name = "PCM_OUT";
channel->iobase = chip->iobase;
DPRINTK ("%s: PCM-OUT iobase @ %p\n", __FUNCTION__,
(void *) channel->iobase);
}
else if (channel == &chip->rec) {
channel->name = "PCM_IN";
channel->iobase = chip->iobase + FORTE_CAP_OFFSET;
channel->record = 1;
DPRINTK ("%s: PCM-IN iobase @ %p\n", __FUNCTION__,
(void *) channel->iobase);
}
else
BUG();
init_waitqueue_head (&channel->wait);
/* Defaults: 48kHz, 16-bit, stereo */
channel->ctrl = inw (channel->iobase + FORTE_PLY_CTRL);
forte_channel_reset (channel);
forte_channel_stereo (channel, 1);
forte_channel_format (channel, AFMT_S16_LE);
forte_channel_rate (channel, 48000);
channel->frag_sz = FORTE_DEF_FRAG_SIZE;
channel->frag_num = FORTE_DEF_FRAGMENTS;
chip->trigger = 0;
spin_unlock_irq (&chip->lock);
return 0;
}
/**
* forte_channel_free:
* @chip: Chip this channel hangs off
* @channel: Channel to nuke
*
* Description:
* Resets channel and frees buffers.
*
* Locking: Hold your horses.
*/
static void
forte_channel_free (struct forte_chip *chip, struct forte_channel *channel)
{
DPRINTK ("%s: %s\n", __FUNCTION__, channel->name);
if (!channel->buf_handle)
return;
pci_free_consistent (chip->pci_dev, channel->buf_pages * PAGE_SIZE,
channel->buf, channel->buf_handle);
memset (channel, 0x0, sizeof (*channel));
}
/* DSP --------------------------------------------------------------------- */
/**
* forte_dsp_ioctl:
*/
static int
forte_dsp_ioctl (struct inode *inode, struct file *file, unsigned int cmd,
unsigned long arg)
{
int ival=0, ret, rval=0, rd, wr, count;
struct forte_chip *chip;
struct audio_buf_info abi;
struct count_info cinfo;
void __user *argp = (void __user *)arg;
int __user *p = argp;
chip = file->private_data;
if (file->f_mode & FMODE_WRITE)
wr = 1;
else
wr = 0;
if (file->f_mode & FMODE_READ)
rd = 1;
else
rd = 0;
switch (cmd) {
case OSS_GETVERSION:
return put_user (SOUND_VERSION, p);
case SNDCTL_DSP_GETCAPS:
DPRINTK ("%s: GETCAPS\n", __FUNCTION__);
ival = FORTE_CAPS; /* DUPLEX */
return put_user (ival, p);
case SNDCTL_DSP_GETFMTS:
DPRINTK ("%s: GETFMTS\n", __FUNCTION__);
ival = FORTE_FMTS; /* U8, 16LE */
return put_user (ival, p);
case SNDCTL_DSP_SETFMT: /* U8, 16LE */
DPRINTK ("%s: SETFMT\n", __FUNCTION__);
if (get_user (ival, p))
return -EFAULT;
spin_lock_irq (&chip->lock);
if (rd) {
forte_channel_stop (&chip->rec);
rval = forte_channel_format (&chip->rec, ival);
}
if (wr) {
forte_channel_stop (&chip->rec);
rval = forte_channel_format (&chip->play, ival);
}
spin_unlock_irq (&chip->lock);
return put_user (rval, p);
case SNDCTL_DSP_STEREO: /* 0 - mono, 1 - stereo */
DPRINTK ("%s: STEREO\n", __FUNCTION__);
if (get_user (ival, p))
return -EFAULT;
spin_lock_irq (&chip->lock);
if (rd) {
forte_channel_stop (&chip->rec);
rval = forte_channel_stereo (&chip->rec, ival);
}
if (wr) {
forte_channel_stop (&chip->rec);
rval = forte_channel_stereo (&chip->play, ival);
}
spin_unlock_irq (&chip->lock);
return put_user (rval, p);
case SNDCTL_DSP_CHANNELS: /* 1 - mono, 2 - stereo */
DPRINTK ("%s: CHANNELS\n", __FUNCTION__);
if (get_user (ival, p))
return -EFAULT;
spin_lock_irq (&chip->lock);
if (rd) {
forte_channel_stop (&chip->rec);
rval = forte_channel_stereo (&chip->rec, ival-1) + 1;
}
if (wr) {
forte_channel_stop (&chip->play);
rval = forte_channel_stereo (&chip->play, ival-1) + 1;
}
spin_unlock_irq (&chip->lock);
return put_user (rval, p);
case SNDCTL_DSP_SPEED:
DPRINTK ("%s: SPEED\n", __FUNCTION__);
if (get_user (ival, p))
return -EFAULT;
spin_lock_irq (&chip->lock);
if (rd) {
forte_channel_stop (&chip->rec);
rval = forte_channel_rate (&chip->rec, ival);
}
if (wr) {
forte_channel_stop (&chip->play);
rval = forte_channel_rate (&chip->play, ival);
}
spin_unlock_irq (&chip->lock);
return put_user(rval, p);
case SNDCTL_DSP_GETBLKSIZE:
DPRINTK ("%s: GETBLKSIZE\n", __FUNCTION__);
spin_lock_irq (&chip->lock);
if (rd)
ival = chip->rec.frag_sz;
if (wr)
ival = chip->play.frag_sz;
spin_unlock_irq (&chip->lock);
return put_user (ival, p);
case SNDCTL_DSP_RESET:
DPRINTK ("%s: RESET\n", __FUNCTION__);
spin_lock_irq (&chip->lock);
if (rd)
forte_channel_reset (&chip->rec);
if (wr)
forte_channel_reset (&chip->play);
spin_unlock_irq (&chip->lock);
return 0;
case SNDCTL_DSP_SYNC:
DPRINTK ("%s: SYNC\n", __FUNCTION__);
if (wr)
ret = forte_channel_drain (&chip->play);
return 0;
case SNDCTL_DSP_POST:
DPRINTK ("%s: POST\n", __FUNCTION__);
if (wr) {
spin_lock_irq (&chip->lock);
if (chip->play.filled_frags)
forte_channel_start (&chip->play);
spin_unlock_irq (&chip->lock);
}
return 0;
case SNDCTL_DSP_SETFRAGMENT:
DPRINTK ("%s: SETFRAGMENT\n", __FUNCTION__);
if (get_user (ival, p))
return -EFAULT;
spin_lock_irq (&chip->lock);
if (rd) {
forte_channel_buffer (&chip->rec, ival & 0xffff,
(ival >> 16) & 0xffff);
ival = (chip->rec.frag_num << 16) + chip->rec.frag_sz;
}
if (wr) {
forte_channel_buffer (&chip->play, ival & 0xffff,
(ival >> 16) & 0xffff);
ival = (chip->play.frag_num << 16) +chip->play.frag_sz;
}
spin_unlock_irq (&chip->lock);
return put_user (ival, p);
case SNDCTL_DSP_GETISPACE:
DPRINTK ("%s: GETISPACE\n", __FUNCTION__);
if (!rd)
return -EINVAL;
spin_lock_irq (&chip->lock);
abi.fragstotal = chip->rec.frag_num;
abi.fragsize = chip->rec.frag_sz;
if (chip->rec.mapped) {
abi.fragments = chip->rec.frag_num - 2;
abi.bytes = abi.fragments * abi.fragsize;
}
else {
abi.fragments = chip->rec.filled_frags;
abi.bytes = abi.fragments * abi.fragsize;
}
spin_unlock_irq (&chip->lock);
return copy_to_user (argp, &abi, sizeof (abi)) ? -EFAULT : 0;
case SNDCTL_DSP_GETIPTR:
DPRINTK ("%s: GETIPTR\n", __FUNCTION__);
if (!rd)
return -EINVAL;
spin_lock_irq (&chip->lock);
if (chip->rec.active)
cinfo.ptr = chip->rec.hwptr;
else
cinfo.ptr = 0;
cinfo.bytes = chip->rec.bytes;
cinfo.blocks = chip->rec.nr_irqs;
chip->rec.nr_irqs = 0;
spin_unlock_irq (&chip->lock);
return copy_to_user (argp, &cinfo, sizeof (cinfo)) ? -EFAULT : 0;
case SNDCTL_DSP_GETOSPACE:
if (!wr)
return -EINVAL;
spin_lock_irq (&chip->lock);
abi.fragstotal = chip->play.frag_num;
abi.fragsize = chip->play.frag_sz;
if (chip->play.mapped) {
abi.fragments = chip->play.frag_num - 2;
abi.bytes = chip->play.buf_sz;
}
else {
abi.fragments = chip->play.frag_num -
chip->play.filled_frags;
if (chip->play.residue)
abi.fragments--;
abi.bytes = abi.fragments * abi.fragsize +
chip->play.residue;
}
spin_unlock_irq (&chip->lock);
return copy_to_user (argp, &abi, sizeof (abi)) ? -EFAULT : 0;
case SNDCTL_DSP_GETOPTR:
if (!wr)
return -EINVAL;
spin_lock_irq (&chip->lock);
if (chip->play.active)
cinfo.ptr = chip->play.hwptr;
else
cinfo.ptr = 0;
cinfo.bytes = chip->play.bytes;
cinfo.blocks = chip->play.nr_irqs;
chip->play.nr_irqs = 0;
spin_unlock_irq (&chip->lock);
return copy_to_user (argp, &cinfo, sizeof (cinfo)) ? -EFAULT : 0;
case SNDCTL_DSP_GETODELAY:
if (!wr)
return -EINVAL;
spin_lock_irq (&chip->lock);
if (!chip->play.active) {
ival = 0;
}
else if (chip->play.mapped) {
count = inw (chip->play.iobase + FORTE_PLY_COUNT) + 1;
ival = chip->play.frag_sz - count;
}
else {
ival = chip->play.filled_frags * chip->play.frag_sz;
if (chip->play.residue)
ival += chip->play.frag_sz - chip->play.residue;
}
spin_unlock_irq (&chip->lock);
return put_user (ival, p);
case SNDCTL_DSP_SETDUPLEX:
DPRINTK ("%s: SETDUPLEX\n", __FUNCTION__);
return -EINVAL;
case SNDCTL_DSP_GETTRIGGER:
DPRINTK ("%s: GETTRIGGER\n", __FUNCTION__);
return put_user (chip->trigger, p);
case SNDCTL_DSP_SETTRIGGER:
if (get_user (ival, p))
return -EFAULT;
DPRINTK ("%s: SETTRIGGER %d\n", __FUNCTION__, ival);
if (wr) {
spin_lock_irq (&chip->lock);
if (ival & PCM_ENABLE_OUTPUT)
forte_channel_start (&chip->play);
else {
chip->trigger = 1;
forte_channel_prep (&chip->play);
forte_channel_stop (&chip->play);
}
spin_unlock_irq (&chip->lock);
}
else if (rd) {
spin_lock_irq (&chip->lock);
if (ival & PCM_ENABLE_INPUT)
forte_channel_start (&chip->rec);
else {
chip->trigger = 1;
forte_channel_prep (&chip->rec);
forte_channel_stop (&chip->rec);
}
spin_unlock_irq (&chip->lock);
}
return 0;
case SOUND_PCM_READ_RATE:
DPRINTK ("%s: PCM_READ_RATE\n", __FUNCTION__);
return put_user (chip->play.rate, p);
case SOUND_PCM_READ_CHANNELS:
DPRINTK ("%s: PCM_READ_CHANNELS\n", __FUNCTION__);
return put_user (chip->play.stereo, p);
case SOUND_PCM_READ_BITS:
DPRINTK ("%s: PCM_READ_BITS\n", __FUNCTION__);
return put_user (chip->play.format, p);
case SNDCTL_DSP_NONBLOCK:
DPRINTK ("%s: DSP_NONBLOCK\n", __FUNCTION__);
file->f_flags |= O_NONBLOCK;
return 0;
default:
DPRINTK ("Unsupported ioctl: %x (%p)\n", cmd, argp);
break;
}
return -EINVAL;
}
/**
* forte_dsp_open:
*/
static int
forte_dsp_open (struct inode *inode, struct file *file)
{
struct forte_chip *chip = forte; /* FIXME: HACK FROM HELL! */
if (file->f_flags & O_NONBLOCK) {
if (down_trylock (&chip->open_sem)) {
DPRINTK ("%s: returning -EAGAIN\n", __FUNCTION__);
return -EAGAIN;
}
}
else {
if (down_interruptible (&chip->open_sem)) {
DPRINTK ("%s: returning -ERESTARTSYS\n", __FUNCTION__);
return -ERESTARTSYS;
}
}
file->private_data = forte;
DPRINTK ("%s: dsp opened by %d\n", __FUNCTION__, current->pid);
if (file->f_mode & FMODE_WRITE)
forte_channel_init (forte, &forte->play);
if (file->f_mode & FMODE_READ)
forte_channel_init (forte, &forte->rec);
return nonseekable_open(inode, file);
}
/**
* forte_dsp_release:
*/
static int
forte_dsp_release (struct inode *inode, struct file *file)
{
struct forte_chip *chip = file->private_data;
int ret = 0;
DPRINTK ("%s: chip @ %p\n", __FUNCTION__, chip);
if (file->f_mode & FMODE_WRITE) {
forte_channel_drain (&chip->play);
spin_lock_irq (&chip->lock);
forte_channel_free (chip, &chip->play);
spin_unlock_irq (&chip->lock);
}
if (file->f_mode & FMODE_READ) {
while (chip->rec.filled_frags > 0)
interruptible_sleep_on (&chip->rec.wait);
spin_lock_irq (&chip->lock);
forte_channel_stop (&chip->rec);
forte_channel_free (chip, &chip->rec);
spin_unlock_irq (&chip->lock);
}
up (&chip->open_sem);
return ret;
}
/**
* forte_dsp_poll:
*
*/
static unsigned int
forte_dsp_poll (struct file *file, struct poll_table_struct *wait)
{
struct forte_chip *chip;
struct forte_channel *channel;
unsigned int mask = 0;
chip = file->private_data;
if (file->f_mode & FMODE_WRITE) {
channel = &chip->play;
if (channel->active)
poll_wait (file, &channel->wait, wait);
spin_lock_irq (&chip->lock);
if (channel->frag_num - channel->filled_frags > 0)
mask |= POLLOUT | POLLWRNORM;
spin_unlock_irq (&chip->lock);
}
if (file->f_mode & FMODE_READ) {
channel = &chip->rec;
if (channel->active)
poll_wait (file, &channel->wait, wait);
spin_lock_irq (&chip->lock);
if (channel->filled_frags > 0)
mask |= POLLIN | POLLRDNORM;
spin_unlock_irq (&chip->lock);
}
return mask;
}
/**
* forte_dsp_mmap:
*/
static int
forte_dsp_mmap (struct file *file, struct vm_area_struct *vma)
{
struct forte_chip *chip;
struct forte_channel *channel;
unsigned long size;
int ret;
chip = file->private_data;
DPRINTK ("%s: start %lXh, size %ld, pgoff %ld\n", __FUNCTION__,
vma->vm_start, vma->vm_end - vma->vm_start, vma->vm_pgoff);
spin_lock_irq (&chip->lock);
if (vma->vm_flags & VM_WRITE && chip->play.active) {
ret = -EBUSY;
goto out;
}
if (vma->vm_flags & VM_READ && chip->rec.active) {
ret = -EBUSY;
goto out;
}
if (file->f_mode & FMODE_WRITE)
channel = &chip->play;
else if (file->f_mode & FMODE_READ)
channel = &chip->rec;
else {
ret = -EINVAL;
goto out;
}
forte_channel_prep (channel);
channel->mapped = 1;
if (vma->vm_pgoff != 0) {
ret = -EINVAL;
goto out;
}
size = vma->vm_end - vma->vm_start;
if (size > channel->buf_pages * PAGE_SIZE) {
DPRINTK ("%s: size (%ld) > buf_sz (%d) \n", __FUNCTION__,
size, channel->buf_sz);
ret = -EINVAL;
goto out;
}
if (remap_pfn_range(vma, vma->vm_start,
virt_to_phys(channel->buf) >> PAGE_SHIFT,
size, vma->vm_page_prot)) {
DPRINTK ("%s: remap el a no worko\n", __FUNCTION__);
ret = -EAGAIN;
goto out;
}
ret = 0;
out:
spin_unlock_irq (&chip->lock);
return ret;
}
/**
* forte_dsp_write:
*/
static ssize_t
forte_dsp_write (struct file *file, const char __user *buffer, size_t bytes,
loff_t *ppos)
{
struct forte_chip *chip;
struct forte_channel *channel;
unsigned int i = bytes, sz = 0;
unsigned long flags;
if (!access_ok (VERIFY_READ, buffer, bytes))
return -EFAULT;
chip = (struct forte_chip *) file->private_data;
if (!chip)
BUG();
channel = &chip->play;
if (!channel)
BUG();
spin_lock_irqsave (&chip->lock, flags);
/* Set up buffers with the right fragment size */
forte_channel_prep (channel);
while (i) {
/* All fragment buffers in use -> wait */
if (channel->frag_num - channel->filled_frags == 0) {
DECLARE_WAITQUEUE (wait, current);
/* For trigger or non-blocking operation, get out */
if (chip->trigger || file->f_flags & O_NONBLOCK) {
spin_unlock_irqrestore (&chip->lock, flags);
return -EAGAIN;
}
/* Otherwise wait for buffers */
add_wait_queue (&channel->wait, &wait);
for (;;) {
spin_unlock_irqrestore (&chip->lock, flags);
set_current_state (TASK_INTERRUPTIBLE);
schedule();
spin_lock_irqsave (&chip->lock, flags);
if (channel->frag_num - channel->filled_frags)
break;
}
remove_wait_queue (&channel->wait, &wait);
set_current_state (TASK_RUNNING);
if (signal_pending (current)) {
spin_unlock_irqrestore (&chip->lock, flags);
return -ERESTARTSYS;
}
}
if (channel->residue)
sz = channel->residue;
else if (i > channel->frag_sz)
sz = channel->frag_sz;
else
sz = i;
spin_unlock_irqrestore (&chip->lock, flags);
if (copy_from_user ((void *) channel->buf + channel->swptr, buffer, sz))
return -EFAULT;
spin_lock_irqsave (&chip->lock, flags);
/* Advance software pointer */
buffer += sz;
channel->swptr += sz;
channel->swptr %= channel->buf_sz;
i -= sz;
/* Only bump filled_frags if a full fragment has been written */
if (channel->swptr % channel->frag_sz == 0) {
channel->filled_frags++;
channel->residue = 0;
}
else
channel->residue = channel->frag_sz - sz;
/* If playback isn't active, start it */
if (channel->active == 0 && chip->trigger == 0)
forte_channel_start (channel);
}
spin_unlock_irqrestore (&chip->lock, flags);
return bytes - i;
}
/**
* forte_dsp_read:
*/
static ssize_t
forte_dsp_read (struct file *file, char __user *buffer, size_t bytes,
loff_t *ppos)
{
struct forte_chip *chip;
struct forte_channel *channel;
unsigned int i = bytes, sz;
unsigned long flags;
if (!access_ok (VERIFY_WRITE, buffer, bytes))
return -EFAULT;
chip = (struct forte_chip *) file->private_data;
if (!chip)
BUG();
channel = &chip->rec;
if (!channel)
BUG();
spin_lock_irqsave (&chip->lock, flags);
/* Set up buffers with the right fragment size */
forte_channel_prep (channel);
/* Start recording */
if (!chip->trigger)
forte_channel_start (channel);
while (i) {
/* No fragment buffers in use -> wait */
if (channel->filled_frags == 0) {
DECLARE_WAITQUEUE (wait, current);
/* For trigger mode operation, get out */
if (chip->trigger) {
spin_unlock_irqrestore (&chip->lock, flags);
return -EAGAIN;
}
add_wait_queue (&channel->wait, &wait);
for (;;) {
if (channel->active == 0)
break;
if (channel->filled_frags)
break;
spin_unlock_irqrestore (&chip->lock, flags);
set_current_state (TASK_INTERRUPTIBLE);
schedule();
spin_lock_irqsave (&chip->lock, flags);
}
set_current_state (TASK_RUNNING);
remove_wait_queue (&channel->wait, &wait);
}
if (i > channel->frag_sz)
sz = channel->frag_sz;
else
sz = i;
spin_unlock_irqrestore (&chip->lock, flags);
if (copy_to_user (buffer, (void *)channel->buf+channel->swptr, sz)) {
DPRINTK ("%s: copy_to_user failed\n", __FUNCTION__);
return -EFAULT;
}
spin_lock_irqsave (&chip->lock, flags);
/* Advance software pointer */
buffer += sz;
if (channel->filled_frags > 0)
channel->filled_frags--;
channel->swptr += channel->frag_sz;
channel->swptr %= channel->buf_sz;
i -= sz;
}
spin_unlock_irqrestore (&chip->lock, flags);
return bytes - i;
}
static struct file_operations forte_dsp_fops = {
.owner = THIS_MODULE,
.llseek = &no_llseek,
.read = &forte_dsp_read,
.write = &forte_dsp_write,
.poll = &forte_dsp_poll,
.ioctl = &forte_dsp_ioctl,
.open = &forte_dsp_open,
.release = &forte_dsp_release,
.mmap = &forte_dsp_mmap,
};
/* Common ------------------------------------------------------------------ */
/**
* forte_interrupt:
*/
static irqreturn_t
forte_interrupt (int irq, void *dev_id, struct pt_regs *regs)
{
struct forte_chip *chip = dev_id;
struct forte_channel *channel = NULL;
u16 status, count;
status = inw (chip->iobase + FORTE_IRQ_STATUS);
/* If this is not for us, get outta here ASAP */
if ((status & (FORTE_IRQ_PLAYBACK | FORTE_IRQ_CAPTURE)) == 0)
return IRQ_NONE;
if (status & FORTE_IRQ_PLAYBACK) {
channel = &chip->play;
spin_lock (&chip->lock);
if (channel->frag_sz == 0)
goto pack;
/* Declare a fragment done */
if (channel->filled_frags > 0)
channel->filled_frags--;
channel->bytes += channel->frag_sz;
channel->nr_irqs++;
/* Flip-flop between buffer I and II */
channel->next_buf ^= 1;
/* Advance hardware pointer by fragment size and wrap around */
channel->hwptr += channel->frag_sz;
channel->hwptr %= channel->buf_sz;
/* Buffer I or buffer II BAR */
outl (channel->buf_handle + channel->hwptr,
channel->next_buf == 0 ?
channel->iobase + FORTE_PLY_BUF1 :
channel->iobase + FORTE_PLY_BUF2);
/* If the currently playing fragment is last, schedule pause */
if (channel->filled_frags == 1)
forte_channel_pause (channel);
pack:
/* Acknowledge interrupt */
outw (FORTE_IRQ_PLAYBACK, chip->iobase + FORTE_IRQ_STATUS);
if (waitqueue_active (&channel->wait))
wake_up_all (&channel->wait);
spin_unlock (&chip->lock);
}
if (status & FORTE_IRQ_CAPTURE) {
channel = &chip->rec;
spin_lock (&chip->lock);
/* One fragment filled */
channel->filled_frags++;
/* Get # of completed bytes */
count = inw (channel->iobase + FORTE_PLY_COUNT) + 1;
if (count == 0) {
DPRINTK ("%s: last, filled_frags = %d\n", __FUNCTION__,
channel->filled_frags);
channel->filled_frags = 0;
goto rack;
}
/* Buffer I or buffer II BAR */
outl (channel->buf_handle + channel->hwptr,
channel->next_buf == 0 ?
channel->iobase + FORTE_PLY_BUF1 :
channel->iobase + FORTE_PLY_BUF2);
/* Flip-flop between buffer I and II */
channel->next_buf ^= 1;
/* Advance hardware pointer by fragment size and wrap around */
channel->hwptr += channel->frag_sz;
channel->hwptr %= channel->buf_sz;
/* Out of buffers */
if (channel->filled_frags == channel->frag_num - 1)
forte_channel_stop (channel);
rack:
/* Acknowledge interrupt */
outw (FORTE_IRQ_CAPTURE, chip->iobase + FORTE_IRQ_STATUS);
spin_unlock (&chip->lock);
if (waitqueue_active (&channel->wait))
wake_up_all (&channel->wait);
}
return IRQ_HANDLED;
}
/**
* forte_proc_read:
*/
static int
forte_proc_read (char *page, char **start, off_t off, int count,
int *eof, void *data)
{
int i = 0, p_rate, p_chan, r_rate;
unsigned short p_reg, r_reg;
i += sprintf (page, "ForteMedia FM801 OSS Lite driver\n%s\n \n",
DRIVER_VERSION);
if (!forte->iobase)
return i;
p_rate = p_chan = -1;
p_reg = inw (forte->iobase + FORTE_PLY_CTRL);
p_rate = (p_reg >> 8) & 15;
p_chan = (p_reg >> 12) & 3;
if (p_rate >= 0 || p_rate <= 10)
p_rate = rates[p_rate];
if (p_chan >= 0 || p_chan <= 2)
p_chan = channels[p_chan];
r_rate = -1;
r_reg = inw (forte->iobase + FORTE_CAP_CTRL);
r_rate = (r_reg >> 8) & 15;
if (r_rate >= 0 || r_rate <= 10)
r_rate = rates[r_rate];
i += sprintf (page + i,
" Playback Capture\n"
"FIFO empty : %-3s %-3s\n"
"Buf1 Last : %-3s %-3s\n"
"Buf2 Last : %-3s %-3s\n"
"Started : %-3s %-3s\n"
"Paused : %-3s %-3s\n"
"Immed Stop : %-3s %-3s\n"
"Rate : %-5d %-5d\n"
"Channels : %-5d -\n"
"16-bit : %-3s %-3s\n"
"Stereo : %-3s %-3s\n"
" \n"
"Buffer Sz : %-6d %-6d\n"
"Frag Sz : %-6d %-6d\n"
"Frag Num : %-6d %-6d\n"
"Frag msecs : %-6d %-6d\n"
"Used Frags : %-6d %-6d\n"
"Mapped : %-3s %-3s\n",
p_reg & 1<<0 ? "yes" : "no",
r_reg & 1<<0 ? "yes" : "no",
p_reg & 1<<1 ? "yes" : "no",
r_reg & 1<<1 ? "yes" : "no",
p_reg & 1<<2 ? "yes" : "no",
r_reg & 1<<2 ? "yes" : "no",
p_reg & 1<<5 ? "yes" : "no",
r_reg & 1<<5 ? "yes" : "no",
p_reg & 1<<6 ? "yes" : "no",
r_reg & 1<<6 ? "yes" : "no",
p_reg & 1<<7 ? "yes" : "no",
r_reg & 1<<7 ? "yes" : "no",
p_rate, r_rate,
p_chan,
p_reg & 1<<14 ? "yes" : "no",
r_reg & 1<<14 ? "yes" : "no",
p_reg & 1<<15 ? "yes" : "no",
r_reg & 1<<15 ? "yes" : "no",
forte->play.buf_sz, forte->rec.buf_sz,
forte->play.frag_sz, forte->rec.frag_sz,
forte->play.frag_num, forte->rec.frag_num,
forte->play.frag_msecs, forte->rec.frag_msecs,
forte->play.filled_frags, forte->rec.filled_frags,
forte->play.mapped ? "yes" : "no",
forte->rec.mapped ? "yes" : "no"
);
return i;
}
/**
* forte_proc_init:
*
* Creates driver info entries in /proc
*/
static int __init
forte_proc_init (void)
{
if (!proc_mkdir ("driver/forte", NULL))
return -EIO;
if (!create_proc_read_entry ("driver/forte/chip", 0, NULL, forte_proc_read, forte)) {
remove_proc_entry ("driver/forte", NULL);
return -EIO;
}
if (!create_proc_read_entry("driver/forte/ac97", 0, NULL, ac97_read_proc, forte->ac97)) {
remove_proc_entry ("driver/forte/chip", NULL);
remove_proc_entry ("driver/forte", NULL);
return -EIO;
}
return 0;
}
/**
* forte_proc_remove:
*
* Removes driver info entries in /proc
*/
static void
forte_proc_remove (void)
{
remove_proc_entry ("driver/forte/ac97", NULL);
remove_proc_entry ("driver/forte/chip", NULL);
remove_proc_entry ("driver/forte", NULL);
}
/**
* forte_chip_init:
* @chip: Chip instance to initialize
*
* Description:
* Resets chip, configures codec and registers the driver with
* the sound subsystem.
*
* Press and hold Start for 8 secs, then switch on Run
* and hold for 4 seconds. Let go of Start. Numbers
* assume a properly oiled TWG.
*/
static int __devinit
forte_chip_init (struct forte_chip *chip)
{
u8 revision;
u16 cmdw;
struct ac97_codec *codec;
pci_read_config_byte (chip->pci_dev, PCI_REVISION_ID, &revision);
if (revision >= 0xB1) {
chip->multichannel = 1;
printk (KERN_INFO PFX "Multi-channel device detected.\n");
}
/* Reset chip */
outw (FORTE_CC_CODEC_RESET | FORTE_CC_AC97_RESET,
chip->iobase + FORTE_CODEC_CTRL);
udelay(100);
outw (0, chip->iobase + FORTE_CODEC_CTRL);
/* Request read from AC97 */
outw (FORTE_AC97_READ | (0 << FORTE_AC97_ADDR_SHIFT),
chip->iobase + FORTE_AC97_CMD);
mdelay(750);
if ((inw (chip->iobase + FORTE_AC97_CMD) & (3<<8)) != (1<<8)) {
printk (KERN_INFO PFX "AC97 codec not responding");
return -EIO;
}
/* Init volume */
outw (0x0808, chip->iobase + FORTE_PCM_VOL);
outw (0x9f1f, chip->iobase + FORTE_FM_VOL);
outw (0x8808, chip->iobase + FORTE_I2S_VOL);
/* I2S control - I2S mode */
outw (0x0003, chip->iobase + FORTE_I2S_MODE);
/* Interrupt setup - unmask PLAYBACK & CAPTURE */
cmdw = inw (chip->iobase + FORTE_IRQ_MASK);
cmdw &= ~0x0003;
outw (cmdw, chip->iobase + FORTE_IRQ_MASK);
/* Interrupt clear */
outw (FORTE_IRQ_PLAYBACK|FORTE_IRQ_CAPTURE,
chip->iobase + FORTE_IRQ_STATUS);
/* Set up the AC97 codec */
if ((codec = ac97_alloc_codec()) == NULL)
return -ENOMEM;
codec->private_data = chip;
codec->codec_read = forte_ac97_read;
codec->codec_write = forte_ac97_write;
codec->id = 0;
if (ac97_probe_codec (codec) == 0) {
printk (KERN_ERR PFX "codec probe failed\n");
ac97_release_codec(codec);
return -1;
}
/* Register mixer */
if ((codec->dev_mixer =
register_sound_mixer (&forte_mixer_fops, -1)) < 0) {
printk (KERN_ERR PFX "couldn't register mixer!\n");
ac97_release_codec(codec);
return -1;
}
chip->ac97 = codec;
/* Register DSP */
if ((chip->dsp = register_sound_dsp (&forte_dsp_fops, -1) ) < 0) {
printk (KERN_ERR PFX "couldn't register dsp!\n");
return -1;
}
/* Register with /proc */
if (forte_proc_init()) {
printk (KERN_ERR PFX "couldn't add entries to /proc!\n");
return -1;
}
return 0;
}
/**
* forte_probe:
* @pci_dev: PCI struct for probed device
* @pci_id:
*
* Description:
* Allocates chip instance, I/O region, and IRQ
*/
static int __init
forte_probe (struct pci_dev *pci_dev, const struct pci_device_id *pci_id)
{
struct forte_chip *chip;
int ret = 0;
/* FIXME: Support more than one chip */
if (found++)
return -EIO;
/* Ignition */
if (pci_enable_device (pci_dev))
return -EIO;
pci_set_master (pci_dev);
/* Allocate chip instance and configure */
forte = (struct forte_chip *)
kmalloc (sizeof (struct forte_chip), GFP_KERNEL);
chip = forte;
if (chip == NULL) {
printk (KERN_WARNING PFX "Out of memory");
return -ENOMEM;
}
memset (chip, 0, sizeof (struct forte_chip));
chip->pci_dev = pci_dev;
init_MUTEX(&chip->open_sem);
spin_lock_init (&chip->lock);
spin_lock_init (&chip->ac97_lock);
if (! request_region (pci_resource_start (pci_dev, 0),
pci_resource_len (pci_dev, 0), DRIVER_NAME)) {
printk (KERN_WARNING PFX "Unable to reserve I/O space");
ret = -ENOMEM;
goto error;
}
chip->iobase = pci_resource_start (pci_dev, 0);
chip->irq = pci_dev->irq;
if (request_irq (chip->irq, forte_interrupt, SA_SHIRQ, DRIVER_NAME,
chip)) {
printk (KERN_WARNING PFX "Unable to reserve IRQ");
ret = -EIO;
goto error;
}
pci_set_drvdata (pci_dev, chip);
printk (KERN_INFO PFX "FM801 chip found at 0x%04lX-0x%04lX IRQ %u\n",
chip->iobase, pci_resource_end (pci_dev, 0), chip->irq);
/* Power it up */
if ((ret = forte_chip_init (chip)) == 0)
return 0;
error:
if (chip->irq)
free_irq (chip->irq, chip);
if (chip->iobase)
release_region (pci_resource_start (pci_dev, 0),
pci_resource_len (pci_dev, 0));
kfree (chip);
return ret;
}
/**
* forte_remove:
* @pci_dev: PCI device to unclaim
*
*/
static void
forte_remove (struct pci_dev *pci_dev)
{
struct forte_chip *chip = pci_get_drvdata (pci_dev);
if (chip == NULL)
return;
/* Turn volume down to avoid popping */
outw (0x1f1f, chip->iobase + FORTE_PCM_VOL);
outw (0x1f1f, chip->iobase + FORTE_FM_VOL);
outw (0x1f1f, chip->iobase + FORTE_I2S_VOL);
forte_proc_remove();
free_irq (chip->irq, chip);
release_region (chip->iobase, pci_resource_len (pci_dev, 0));
unregister_sound_dsp (chip->dsp);
unregister_sound_mixer (chip->ac97->dev_mixer);
ac97_release_codec(chip->ac97);
kfree (chip);
printk (KERN_INFO PFX "driver released\n");
}
static struct pci_device_id forte_pci_ids[] = {
{ 0x1319, 0x0801, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },
{ 0, }
};
static struct pci_driver forte_pci_driver = {
.name = DRIVER_NAME,
.id_table = forte_pci_ids,
.probe = forte_probe,
.remove = forte_remove,
};
/**
* forte_init_module:
*
*/
static int __init
forte_init_module (void)
{
printk (KERN_INFO PFX DRIVER_VERSION "\n");
return pci_register_driver (&forte_pci_driver);
}
/**
* forte_cleanup_module:
*
*/
static void __exit
forte_cleanup_module (void)
{
pci_unregister_driver (&forte_pci_driver);
}
module_init(forte_init_module);
module_exit(forte_cleanup_module);
MODULE_AUTHOR("Martin K. Petersen <mkp@mkp.net>");
MODULE_DESCRIPTION("ForteMedia FM801 OSS Driver");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE (pci, forte_pci_ids);
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