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linux/sound/oss/ad1816.c
Adrian Bunk 155542c271 [PATCH] sound/oss/: cleanups 
This patch contains cleanups including the following:
- make needlessly global code static

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25 16:25:01 -07:00

1370 lines
33 KiB
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/*
*
* AD1816 lowlevel sound driver for Linux 2.6.0 and above
*
* Copyright (C) 1998-2003 by Thorsten Knabe <linux@thorsten-knabe.de>
*
* Based on the CS4232/AD1848 driver Copyright (C) by Hannu Savolainen 1993-1996
*
*
* version: 1.5
* status: beta
* date: 2003/07/15
*
* Changes:
* Oleg Drokin: Some cleanup of load/unload functions. 1998/11/24
*
* Thorsten Knabe: attach and unload rewritten,
* some argument checks added 1998/11/30
*
* Thorsten Knabe: Buggy isa bridge workaround added 1999/01/16
*
* David Moews/Thorsten Knabe: Introduced options
* parameter. Added slightly modified patch from
* David Moews to disable dsp audio sources by setting
* bit 0 of options parameter. This seems to be
* required by some Aztech/Newcom SC-16 cards. 1999/04/18
*
* Christoph Hellwig: Adapted to module_init/module_exit. 2000/03/03
*
* Christoph Hellwig: Added isapnp support 2000/03/15
*
* Arnaldo Carvalho de Melo: get rid of check_region 2001/10/07
*
* Thorsten Knabe: Compiling with CONFIG_PNP enabled
* works again. It is now possible to use more than one
* AD1816 sound card. Sample rate now may be changed during
* playback/capture. printk() uses log levels everywhere.
* SMP fixes. DMA handling fixes.
* Other minor code cleanup. 2003/07/15
*
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/isapnp.h>
#include <linux/stddef.h>
#include <linux/spinlock.h>
#include "sound_config.h"
#define DEBUGNOISE(x)
#define CHECK_FOR_POWER { int timeout=100; \
while (timeout > 0 && (inb(devc->base)&0x80)!= 0x80) {\
timeout--; \
} \
if (timeout==0) {\
printk(KERN_WARNING "ad1816: Check for power failed in %s line: %d\n",__FILE__,__LINE__); \
} \
}
/* structure to hold device specific information */
typedef struct
{
int base; /* set in attach */
int irq;
int dma_playback;
int dma_capture;
int opened; /* open */
int speed;
int channels;
int audio_format;
int audio_mode;
int recmask; /* setup */
unsigned char format_bits;
int supported_devices;
int supported_rec_devices;
unsigned short levels[SOUND_MIXER_NRDEVICES];
/* misc */
struct pnp_dev *pnpdev; /* configured via pnp */
int dev_no; /* this is the # in audio_devs and NOT
in ad1816_info */
spinlock_t lock;
} ad1816_info;
static int nr_ad1816_devs;
static int ad1816_clockfreq = 33000;
static int options;
/* supported audio formats */
static int ad_format_mask =
AFMT_U8 | AFMT_S16_LE | AFMT_S16_BE | AFMT_MU_LAW | AFMT_A_LAW;
/* array of device info structures */
static ad1816_info dev_info[MAX_AUDIO_DEV];
/* ------------------------------------------------------------------- */
/* functions for easier access to inderect registers */
static int ad_read (ad1816_info * devc, int reg)
{
int result;
CHECK_FOR_POWER;
outb ((unsigned char) (reg & 0x3f), devc->base+0);
result = inb(devc->base+2);
result+= inb(devc->base+3)<<8;
return (result);
}
static void ad_write (ad1816_info * devc, int reg, int data)
{
CHECK_FOR_POWER;
outb ((unsigned char) (reg & 0xff), devc->base+0);
outb ((unsigned char) (data & 0xff),devc->base+2);
outb ((unsigned char) ((data>>8)&0xff),devc->base+3);
}
/* ------------------------------------------------------------------- */
/* function interface required by struct audio_driver */
static void ad1816_halt_input (int dev)
{
unsigned long flags;
ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
unsigned char buffer;
DEBUGNOISE(printk(KERN_DEBUG "ad1816: halt_input called\n"));
spin_lock_irqsave(&devc->lock,flags);
if(!isa_dma_bridge_buggy) {
disable_dma(audio_devs[dev]->dmap_in->dma);
}
buffer=inb(devc->base+9);
if (buffer & 0x01) {
/* disable capture */
outb(buffer & ~0x01,devc->base+9);
}
if(!isa_dma_bridge_buggy) {
enable_dma(audio_devs[dev]->dmap_in->dma);
}
/* Clear interrupt status */
outb (~0x40, devc->base+1);
devc->audio_mode &= ~PCM_ENABLE_INPUT;
spin_unlock_irqrestore(&devc->lock,flags);
}
static void ad1816_halt_output (int dev)
{
unsigned long flags;
ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
unsigned char buffer;
DEBUGNOISE(printk(KERN_DEBUG "ad1816: halt_output called!\n"));
spin_lock_irqsave(&devc->lock,flags);
/* Mute pcm output */
ad_write(devc, 4, ad_read(devc,4)|0x8080);
if(!isa_dma_bridge_buggy) {
disable_dma(audio_devs[dev]->dmap_out->dma);
}
buffer=inb(devc->base+8);
if (buffer & 0x01) {
/* disable capture */
outb(buffer & ~0x01,devc->base+8);
}
if(!isa_dma_bridge_buggy) {
enable_dma(audio_devs[dev]->dmap_out->dma);
}
/* Clear interrupt status */
outb ((unsigned char)~0x80, devc->base+1);
devc->audio_mode &= ~PCM_ENABLE_OUTPUT;
spin_unlock_irqrestore(&devc->lock,flags);
}
static void ad1816_output_block (int dev, unsigned long buf,
int count, int intrflag)
{
unsigned long flags;
unsigned long cnt;
ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
DEBUGNOISE(printk(KERN_DEBUG "ad1816: output_block called buf=%ld count=%d flags=%d\n",buf,count,intrflag));
cnt = count/4 - 1;
spin_lock_irqsave(&devc->lock,flags);
/* set transfer count */
ad_write (devc, 8, cnt & 0xffff);
devc->audio_mode |= PCM_ENABLE_OUTPUT;
spin_unlock_irqrestore(&devc->lock,flags);
}
static void ad1816_start_input (int dev, unsigned long buf, int count,
int intrflag)
{
unsigned long flags;
unsigned long cnt;
ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
DEBUGNOISE(printk(KERN_DEBUG "ad1816: start_input called buf=%ld count=%d flags=%d\n",buf,count,intrflag));
cnt = count/4 - 1;
spin_lock_irqsave(&devc->lock,flags);
/* set transfer count */
ad_write (devc, 10, cnt & 0xffff);
devc->audio_mode |= PCM_ENABLE_INPUT;
spin_unlock_irqrestore(&devc->lock,flags);
}
static int ad1816_prepare_for_input (int dev, int bsize, int bcount)
{
unsigned long flags;
unsigned int freq;
ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
unsigned char fmt_bits;
DEBUGNOISE(printk(KERN_DEBUG "ad1816: prepare_for_input called: bsize=%d bcount=%d\n",bsize,bcount));
spin_lock_irqsave(&devc->lock,flags);
fmt_bits= (devc->format_bits&0x7)<<3;
/* set mono/stereo mode */
if (devc->channels > 1) {
fmt_bits |=0x4;
}
/* set Mono/Stereo in playback/capture register */
outb( (inb(devc->base+8) & ~0x3C)|fmt_bits, devc->base+8);
outb( (inb(devc->base+9) & ~0x3C)|fmt_bits, devc->base+9);
freq=((unsigned int)devc->speed*33000)/ad1816_clockfreq;
/* write playback/capture speeds */
ad_write (devc, 2, freq & 0xffff);
ad_write (devc, 3, freq & 0xffff);
spin_unlock_irqrestore(&devc->lock,flags);
ad1816_halt_input(dev);
return 0;
}
static int ad1816_prepare_for_output (int dev, int bsize, int bcount)
{
unsigned long flags;
unsigned int freq;
ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
unsigned char fmt_bits;
DEBUGNOISE(printk(KERN_DEBUG "ad1816: prepare_for_output called: bsize=%d bcount=%d\n",bsize,bcount));
spin_lock_irqsave(&devc->lock,flags);
fmt_bits= (devc->format_bits&0x7)<<3;
/* set mono/stereo mode */
if (devc->channels > 1) {
fmt_bits |=0x4;
}
/* write format bits to playback/capture registers */
outb( (inb(devc->base+8) & ~0x3C)|fmt_bits, devc->base+8);
outb( (inb(devc->base+9) & ~0x3C)|fmt_bits, devc->base+9);
freq=((unsigned int)devc->speed*33000)/ad1816_clockfreq;
/* write playback/capture speeds */
ad_write (devc, 2, freq & 0xffff);
ad_write (devc, 3, freq & 0xffff);
spin_unlock_irqrestore(&devc->lock,flags);
ad1816_halt_output(dev);
return 0;
}
static void ad1816_trigger (int dev, int state)
{
unsigned long flags;
ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
DEBUGNOISE(printk(KERN_DEBUG "ad1816: trigger called! (devc=%d,devc->base=%d\n", devc, devc->base));
/* mode may have changed */
spin_lock_irqsave(&devc->lock,flags);
/* mask out modes not specified on open call */
state &= devc->audio_mode;
/* setup soundchip to new io-mode */
if (state & PCM_ENABLE_INPUT) {
/* enable capture */
outb(inb(devc->base+9)|0x01, devc->base+9);
} else {
/* disable capture */
outb(inb(devc->base+9)&~0x01, devc->base+9);
}
if (state & PCM_ENABLE_OUTPUT) {
/* enable playback */
outb(inb(devc->base+8)|0x01, devc->base+8);
/* unmute pcm output */
ad_write(devc, 4, ad_read(devc,4)&~0x8080);
} else {
/* mute pcm output */
ad_write(devc, 4, ad_read(devc,4)|0x8080);
/* disable capture */
outb(inb(devc->base+8)&~0x01, devc->base+8);
}
spin_unlock_irqrestore(&devc->lock,flags);
}
/* halt input & output */
static void ad1816_halt (int dev)
{
ad1816_halt_input(dev);
ad1816_halt_output(dev);
}
static void ad1816_reset (int dev)
{
ad1816_halt (dev);
}
/* set playback speed */
static int ad1816_set_speed (int dev, int arg)
{
unsigned long flags;
unsigned int freq;
int ret;
ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
spin_lock_irqsave(&devc->lock, flags);
if (arg == 0) {
ret = devc->speed;
spin_unlock_irqrestore(&devc->lock, flags);
return ret;
}
/* range checking */
if (arg < 4000) {
arg = 4000;
}
if (arg > 55000) {
arg = 55000;
}
devc->speed = arg;
/* change speed during playback */
freq=((unsigned int)devc->speed*33000)/ad1816_clockfreq;
/* write playback/capture speeds */
ad_write (devc, 2, freq & 0xffff);
ad_write (devc, 3, freq & 0xffff);
ret = devc->speed;
spin_unlock_irqrestore(&devc->lock, flags);
return ret;
}
static unsigned int ad1816_set_bits (int dev, unsigned int arg)
{
unsigned long flags;
ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
static struct format_tbl {
int format;
unsigned char bits;
} format2bits[] = {
{ 0, 0 },
{ AFMT_MU_LAW, 1 },
{ AFMT_A_LAW, 3 },
{ AFMT_IMA_ADPCM, 0 },
{ AFMT_U8, 0 },
{ AFMT_S16_LE, 2 },
{ AFMT_S16_BE, 6 },
{ AFMT_S8, 0 },
{ AFMT_U16_LE, 0 },
{ AFMT_U16_BE, 0 }
};
int i, n = sizeof (format2bits) / sizeof (struct format_tbl);
spin_lock_irqsave(&devc->lock, flags);
/* return current format */
if (arg == 0) {
arg = devc->audio_format;
spin_unlock_irqrestore(&devc->lock, flags);
return arg;
}
devc->audio_format = arg;
/* search matching format bits */
for (i = 0; i < n; i++)
if (format2bits[i].format == arg) {
devc->format_bits = format2bits[i].bits;
devc->audio_format = arg;
spin_unlock_irqrestore(&devc->lock, flags);
return arg;
}
/* Still hanging here. Something must be terribly wrong */
devc->format_bits = 0;
devc->audio_format = AFMT_U8;
spin_unlock_irqrestore(&devc->lock, flags);
return(AFMT_U8);
}
static short ad1816_set_channels (int dev, short arg)
{
ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
if (arg != 1 && arg != 2)
return devc->channels;
devc->channels = arg;
return arg;
}
/* open device */
static int ad1816_open (int dev, int mode)
{
ad1816_info *devc = NULL;
unsigned long flags;
/* is device number valid ? */
if (dev < 0 || dev >= num_audiodevs)
return -(ENXIO);
/* get device info of this dev */
devc = (ad1816_info *) audio_devs[dev]->devc;
/* make check if device already open atomic */
spin_lock_irqsave(&devc->lock,flags);
if (devc->opened) {
spin_unlock_irqrestore(&devc->lock,flags);
return -(EBUSY);
}
/* mark device as open */
devc->opened = 1;
devc->audio_mode = 0;
devc->speed = 8000;
devc->audio_format=AFMT_U8;
devc->channels=1;
spin_unlock_irqrestore(&devc->lock,flags);
ad1816_reset(devc->dev_no); /* halt all pending output */
return 0;
}
static void ad1816_close (int dev) /* close device */
{
unsigned long flags;
ad1816_info *devc = (ad1816_info *) audio_devs[dev]->devc;
/* halt all pending output */
ad1816_reset(devc->dev_no);
spin_lock_irqsave(&devc->lock,flags);
devc->opened = 0;
devc->audio_mode = 0;
devc->speed = 8000;
devc->audio_format=AFMT_U8;
devc->format_bits = 0;
spin_unlock_irqrestore(&devc->lock,flags);
}
/* ------------------------------------------------------------------- */
/* Audio driver structure */
static struct audio_driver ad1816_audio_driver =
{
.owner = THIS_MODULE,
.open = ad1816_open,
.close = ad1816_close,
.output_block = ad1816_output_block,
.start_input = ad1816_start_input,
.prepare_for_input = ad1816_prepare_for_input,
.prepare_for_output = ad1816_prepare_for_output,
.halt_io = ad1816_halt,
.halt_input = ad1816_halt_input,
.halt_output = ad1816_halt_output,
.trigger = ad1816_trigger,
.set_speed = ad1816_set_speed,
.set_bits = ad1816_set_bits,
.set_channels = ad1816_set_channels,
};
/* ------------------------------------------------------------------- */
/* Interrupt handler */
static irqreturn_t ad1816_interrupt (int irq, void *dev_id, struct pt_regs *dummy)
{
unsigned char status;
ad1816_info *devc = (ad1816_info *)dev_id;
if (irq < 0 || irq > 15) {
printk(KERN_WARNING "ad1816: Got bogus interrupt %d\n", irq);
return IRQ_NONE;
}
spin_lock(&devc->lock);
/* read interrupt register */
status = inb (devc->base+1);
/* Clear all interrupt */
outb (~status, devc->base+1);
DEBUGNOISE(printk(KERN_DEBUG "ad1816: Got interrupt subclass %d\n",status));
if (status == 0) {
DEBUGNOISE(printk(KERN_DEBUG "ad1816: interrupt: Got interrupt, but no source.\n"));
spin_unlock(&devc->lock);
return IRQ_NONE;
}
if (devc->opened && (devc->audio_mode & PCM_ENABLE_INPUT) && (status&64))
DMAbuf_inputintr (devc->dev_no);
if (devc->opened && (devc->audio_mode & PCM_ENABLE_OUTPUT) && (status & 128))
DMAbuf_outputintr (devc->dev_no, 1);
spin_unlock(&devc->lock);
return IRQ_HANDLED;
}
/* ------------------------------------------------------------------- */
/* Mixer stuff */
struct mixer_def {
unsigned int regno: 7;
unsigned int polarity:1; /* 0=normal, 1=reversed */
unsigned int bitpos:4;
unsigned int nbits:4;
};
static char mix_cvt[101] = {
0, 0, 3, 7,10,13,16,19,21,23,26,28,30,32,34,35,37,39,40,42,
43,45,46,47,49,50,51,52,53,55,56,57,58,59,60,61,62,63,64,65,
65,66,67,68,69,70,70,71,72,73,73,74,75,75,76,77,77,78,79,79,
80,81,81,82,82,83,84,84,85,85,86,86,87,87,88,88,89,89,90,90,
91,91,92,92,93,93,94,94,95,95,96,96,96,97,97,98,98,98,99,99,
100
};
typedef struct mixer_def mixer_ent;
/*
* Most of the mixer entries work in backwards. Setting the polarity field
* makes them to work correctly.
*
* The channel numbering used by individual soundcards is not fixed. Some
* cards have assigned different meanings for the AUX1, AUX2 and LINE inputs.
* The current version doesn't try to compensate this.
*/
#define MIX_ENT(name, reg_l, pola_l, pos_l, len_l, reg_r, pola_r, pos_r, len_r) \
{{reg_l, pola_l, pos_l, len_l}, {reg_r, pola_r, pos_r, len_r}}
static mixer_ent mix_devices[SOUND_MIXER_NRDEVICES][2] = {
MIX_ENT(SOUND_MIXER_VOLUME, 14, 1, 8, 5, 14, 1, 0, 5),
MIX_ENT(SOUND_MIXER_BASS, 0, 0, 0, 0, 0, 0, 0, 0),
MIX_ENT(SOUND_MIXER_TREBLE, 0, 0, 0, 0, 0, 0, 0, 0),
MIX_ENT(SOUND_MIXER_SYNTH, 5, 1, 8, 6, 5, 1, 0, 6),
MIX_ENT(SOUND_MIXER_PCM, 4, 1, 8, 6, 4, 1, 0, 6),
MIX_ENT(SOUND_MIXER_SPEAKER, 0, 0, 0, 0, 0, 0, 0, 0),
MIX_ENT(SOUND_MIXER_LINE, 18, 1, 8, 5, 18, 1, 0, 5),
MIX_ENT(SOUND_MIXER_MIC, 19, 1, 8, 5, 19, 1, 0, 5),
MIX_ENT(SOUND_MIXER_CD, 15, 1, 8, 5, 15, 1, 0, 5),
MIX_ENT(SOUND_MIXER_IMIX, 0, 0, 0, 0, 0, 0, 0, 0),
MIX_ENT(SOUND_MIXER_ALTPCM, 0, 0, 0, 0, 0, 0, 0, 0),
MIX_ENT(SOUND_MIXER_RECLEV, 20, 0, 8, 4, 20, 0, 0, 4),
MIX_ENT(SOUND_MIXER_IGAIN, 0, 0, 0, 0, 0, 0, 0, 0),
MIX_ENT(SOUND_MIXER_OGAIN, 0, 0, 0, 0, 0, 0, 0, 0),
MIX_ENT(SOUND_MIXER_LINE1, 17, 1, 8, 5, 17, 1, 0, 5),
MIX_ENT(SOUND_MIXER_LINE2, 16, 1, 8, 5, 16, 1, 0, 5),
MIX_ENT(SOUND_MIXER_LINE3, 39, 0, 9, 4, 39, 1, 0, 5)
};
static unsigned short default_mixer_levels[SOUND_MIXER_NRDEVICES] =
{
0x4343, /* Master Volume */
0x3232, /* Bass */
0x3232, /* Treble */
0x0000, /* FM */
0x4343, /* PCM */
0x0000, /* PC Speaker */
0x0000, /* Ext Line */
0x0000, /* Mic */
0x0000, /* CD */
0x0000, /* Recording monitor */
0x0000, /* SB PCM */
0x0000, /* Recording level */
0x0000, /* Input gain */
0x0000, /* Output gain */
0x0000, /* Line1 */
0x0000, /* Line2 */
0x0000 /* Line3 (usually line in)*/
};
#define LEFT_CHN 0
#define RIGHT_CHN 1
static int
ad1816_set_recmask (ad1816_info * devc, int mask)
{
unsigned long flags;
unsigned char recdev;
int i, n;
spin_lock_irqsave(&devc->lock, flags);
mask &= devc->supported_rec_devices;
n = 0;
/* Count selected device bits */
for (i = 0; i < 32; i++)
if (mask & (1 << i))
n++;
if (n == 0)
mask = SOUND_MASK_MIC;
else if (n != 1) { /* Too many devices selected */
/* Filter out active settings */
mask &= ~devc->recmask;
n = 0;
/* Count selected device bits */
for (i = 0; i < 32; i++)
if (mask & (1 << i))
n++;
if (n != 1)
mask = SOUND_MASK_MIC;
}
switch (mask) {
case SOUND_MASK_MIC:
recdev = 5;
break;
case SOUND_MASK_LINE:
recdev = 0;
break;
case SOUND_MASK_CD:
recdev = 2;
break;
case SOUND_MASK_LINE1:
recdev = 4;
break;
case SOUND_MASK_LINE2:
recdev = 3;
break;
case SOUND_MASK_VOLUME:
recdev = 1;
break;
default:
mask = SOUND_MASK_MIC;
recdev = 5;
}
recdev <<= 4;
ad_write (devc, 20,
(ad_read (devc, 20) & 0x8f8f) | recdev | (recdev<<8));
devc->recmask = mask;
spin_unlock_irqrestore(&devc->lock, flags);
return mask;
}
static void
change_bits (int *regval, int dev, int chn, int newval)
{
unsigned char mask;
int shift;
/* Reverse polarity*/
if (mix_devices[dev][chn].polarity == 1)
newval = 100 - newval;
mask = (1 << mix_devices[dev][chn].nbits) - 1;
shift = mix_devices[dev][chn].bitpos;
/* Scale it */
newval = (int) ((newval * mask) + 50) / 100;
/* Clear bits */
*regval &= ~(mask << shift);
/* Set new value */
*regval |= (newval & mask) << shift;
}
static int
ad1816_mixer_get (ad1816_info * devc, int dev)
{
DEBUGNOISE(printk(KERN_DEBUG "ad1816: mixer_get called!\n"));
/* range check + supported mixer check */
if (dev < 0 || dev >= SOUND_MIXER_NRDEVICES )
return (-(EINVAL));
if (!((1 << dev) & devc->supported_devices))
return -(EINVAL);
return devc->levels[dev];
}
static int
ad1816_mixer_set (ad1816_info * devc, int dev, int value)
{
int left = value & 0x000000ff;
int right = (value & 0x0000ff00) >> 8;
int retvol;
int regoffs;
int val;
int valmute;
unsigned long flags;
DEBUGNOISE(printk(KERN_DEBUG "ad1816: mixer_set called!\n"));
if (dev < 0 || dev >= SOUND_MIXER_NRDEVICES )
return -(EINVAL);
if (left > 100)
left = 100;
if (left < 0)
left = 0;
if (right > 100)
right = 100;
if (right < 0)
right = 0;
/* Mono control */
if (mix_devices[dev][RIGHT_CHN].nbits == 0)
right = left;
retvol = left | (right << 8);
/* Scale it */
left = mix_cvt[left];
right = mix_cvt[right];
/* reject all mixers that are not supported */
if (!(devc->supported_devices & (1 << dev)))
return -(EINVAL);
/* sanity check */
if (mix_devices[dev][LEFT_CHN].nbits == 0)
return -(EINVAL);
spin_lock_irqsave(&devc->lock, flags);
/* keep precise volume internal */
devc->levels[dev] = retvol;
/* Set the left channel */
regoffs = mix_devices[dev][LEFT_CHN].regno;
val = ad_read (devc, regoffs);
change_bits (&val, dev, LEFT_CHN, left);
valmute=val;
/* Mute bit masking on some registers */
if ( regoffs==5 || regoffs==14 || regoffs==15 ||
regoffs==16 || regoffs==17 || regoffs==18 ||
regoffs==19 || regoffs==39) {
if (left==0)
valmute |= 0x8000;
else
valmute &= ~0x8000;
}
ad_write (devc, regoffs, valmute); /* mute */
/*
* Set the right channel
*/
/* Was just a mono channel */
if (mix_devices[dev][RIGHT_CHN].nbits == 0) {
spin_unlock_irqrestore(&devc->lock, flags);
return retvol;
}
regoffs = mix_devices[dev][RIGHT_CHN].regno;
val = ad_read (devc, regoffs);
change_bits (&val, dev, RIGHT_CHN, right);
valmute=val;
if ( regoffs==5 || regoffs==14 || regoffs==15 ||
regoffs==16 || regoffs==17 || regoffs==18 ||
regoffs==19 || regoffs==39) {
if (right==0)
valmute |= 0x80;
else
valmute &= ~0x80;
}
ad_write (devc, regoffs, valmute); /* mute */
spin_unlock_irqrestore(&devc->lock, flags);
return retvol;
}
#define MIXER_DEVICES ( SOUND_MASK_VOLUME | \
SOUND_MASK_SYNTH | \
SOUND_MASK_PCM | \
SOUND_MASK_LINE | \
SOUND_MASK_LINE1 | \
SOUND_MASK_LINE2 | \
SOUND_MASK_LINE3 | \
SOUND_MASK_MIC | \
SOUND_MASK_CD | \
SOUND_MASK_RECLEV \
)
#define REC_DEVICES ( SOUND_MASK_LINE2 |\
SOUND_MASK_LINE |\
SOUND_MASK_LINE1 |\
SOUND_MASK_MIC |\
SOUND_MASK_CD |\
SOUND_MASK_VOLUME \
)
static void
ad1816_mixer_reset (ad1816_info * devc)
{
int i;
devc->supported_devices = MIXER_DEVICES;
devc->supported_rec_devices = REC_DEVICES;
for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
if (devc->supported_devices & (1 << i))
ad1816_mixer_set (devc, i, default_mixer_levels[i]);
ad1816_set_recmask (devc, SOUND_MASK_MIC);
}
static int
ad1816_mixer_ioctl (int dev, unsigned int cmd, void __user * arg)
{
ad1816_info *devc = mixer_devs[dev]->devc;
int val;
int __user *p = arg;
DEBUGNOISE(printk(KERN_DEBUG "ad1816: mixer_ioctl called!\n"));
/* Mixer ioctl */
if (((cmd >> 8) & 0xff) == 'M') {
/* set ioctl */
if (_SIOC_DIR (cmd) & _SIOC_WRITE) {
switch (cmd & 0xff){
case SOUND_MIXER_RECSRC:
if (get_user(val, p))
return -EFAULT;
val=ad1816_set_recmask (devc, val);
return put_user(val, p);
break;
default:
if (get_user(val, p))
return -EFAULT;
if ((val=ad1816_mixer_set (devc, cmd & 0xff, val))<0)
return val;
else
return put_user(val, p);
}
} else {
/* read ioctl */
switch (cmd & 0xff) {
case SOUND_MIXER_RECSRC:
val=devc->recmask;
return put_user(val, p);
break;
case SOUND_MIXER_DEVMASK:
val=devc->supported_devices;
return put_user(val, p);
break;
case SOUND_MIXER_STEREODEVS:
val=devc->supported_devices & ~(SOUND_MASK_SPEAKER | SOUND_MASK_IMIX);
return put_user(val, p);
break;
case SOUND_MIXER_RECMASK:
val=devc->supported_rec_devices;
return put_user(val, p);
break;
case SOUND_MIXER_CAPS:
val=SOUND_CAP_EXCL_INPUT;
return put_user(val, p);
break;
default:
if ((val=ad1816_mixer_get (devc, cmd & 0xff))<0)
return val;
else
return put_user(val, p);
}
}
} else
/* not for mixer */
return -(EINVAL);
}
/* ------------------------------------------------------------------- */
/* Mixer structure */
static struct mixer_operations ad1816_mixer_operations = {
.owner = THIS_MODULE,
.id = "AD1816",
.name = "AD1816 Mixer",
.ioctl = ad1816_mixer_ioctl
};
/* ------------------------------------------------------------------- */
/* stuff for card recognition, init and unloading PNP ...*/
/* check if AD1816 present at specified hw_config and register device with OS
* return 1 if initialization was successful, 0 otherwise
*/
static int __init ad1816_init_card (struct address_info *hw_config,
struct pnp_dev *pnp)
{
ad1816_info *devc = NULL;
int tmp;
int oss_devno = -1;
printk(KERN_INFO "ad1816: initializing card: io=0x%x, irq=%d, dma=%d, "
"dma2=%d, clockfreq=%d, options=%d isadmabug=%d "
"%s\n",
hw_config->io_base,
hw_config->irq,
hw_config->dma,
hw_config->dma2,
ad1816_clockfreq,
options,
isa_dma_bridge_buggy,
pnp?"(PNP)":"");
/* ad1816_info structure remaining ? */
if (nr_ad1816_devs >= MAX_AUDIO_DEV) {
printk(KERN_WARNING "ad1816: no more ad1816_info structures "
"left\n");
goto out;
}
devc = &dev_info[nr_ad1816_devs];
devc->base = hw_config->io_base;
devc->irq = hw_config->irq;
devc->dma_playback=hw_config->dma;
devc->dma_capture=hw_config->dma2;
devc->opened = 0;
devc->pnpdev = pnp;
spin_lock_init(&devc->lock);
if (!request_region(devc->base, 16, "AD1816 Sound")) {
printk(KERN_WARNING "ad1816: I/O port 0x%03x not free\n",
devc->base);
goto out;
}
printk(KERN_INFO "ad1816: Examining AD1816 at address 0x%03x.\n",
devc->base);
/* tests for ad1816 */
/* base+0: bit 1 must be set but not 255 */
tmp=inb(devc->base);
if ( (tmp&0x80)==0 || tmp==255 ) {
printk (KERN_INFO "ad1816: Chip is not an AD1816 or chip "
"is not active (Test 0)\n");
goto out_release_region;
}
/* writes to ireg 8 are copied to ireg 9 */
ad_write(devc,8,12345);
if (ad_read(devc,9)!=12345) {
printk(KERN_INFO "ad1816: Chip is not an AD1816 (Test 1)\n");
goto out_release_region;
}
/* writes to ireg 8 are copied to ireg 9 */
ad_write(devc,8,54321);
if (ad_read(devc,9)!=54321) {
printk(KERN_INFO "ad1816: Chip is not an AD1816 (Test 2)\n");
goto out_release_region;
}
/* writes to ireg 10 are copied to ireg 11 */
ad_write(devc,10,54321);
if (ad_read(devc,11)!=54321) {
printk (KERN_INFO "ad1816: Chip is not an AD1816 (Test 3)\n");
goto out_release_region;
}
/* writes to ireg 10 are copied to ireg 11 */
ad_write(devc,10,12345);
if (ad_read(devc,11)!=12345) {
printk (KERN_INFO "ad1816: Chip is not an AD1816 (Test 4)\n");
goto out_release_region;
}
/* bit in base +1 cannot be set to 1 */
tmp=inb(devc->base+1);
outb(0xff,devc->base+1);
if (inb(devc->base+1)!=tmp) {
printk(KERN_INFO "ad1816: Chip is not an AD1816 (Test 5)\n");
goto out_release_region;
}
printk(KERN_INFO "ad1816: AD1816 (version %d) successfully detected!\n",
ad_read(devc,45));
/* disable all interrupts */
ad_write(devc,1,0);
/* Clear pending interrupts */
outb (0, devc->base+1);
/* allocate irq */
if (devc->irq < 0 || devc->irq > 15)
goto out_release_region;
if (request_irq(devc->irq, ad1816_interrupt,0,
"SoundPort", devc) < 0) {
printk(KERN_WARNING "ad1816: IRQ in use\n");
goto out_release_region;
}
/* DMA stuff */
if (sound_alloc_dma (devc->dma_playback, "Sound System")) {
printk(KERN_WARNING "ad1816: Can't allocate DMA%d\n",
devc->dma_playback);
goto out_free_irq;
}
if ( devc->dma_capture >= 0 &&
devc->dma_capture != devc->dma_playback) {
if (sound_alloc_dma(devc->dma_capture,
"Sound System (capture)")) {
printk(KERN_WARNING "ad1816: Can't allocate DMA%d\n",
devc->dma_capture);
goto out_free_dma;
}
devc->audio_mode=DMA_AUTOMODE|DMA_DUPLEX;
} else {
printk(KERN_WARNING "ad1816: Only one DMA channel "
"available/configured. No duplex operation possible\n");
devc->audio_mode=DMA_AUTOMODE;
}
conf_printf2 ("AD1816 audio driver",
devc->base, devc->irq, devc->dma_playback,
devc->dma_capture);
/* register device */
if ((oss_devno = sound_install_audiodrv (AUDIO_DRIVER_VERSION,
"AD1816 audio driver",
&ad1816_audio_driver,
sizeof (struct audio_driver),
devc->audio_mode,
ad_format_mask,
devc,
devc->dma_playback,
devc->dma_capture)) < 0) {
printk(KERN_WARNING "ad1816: Can't install sound driver\n");
goto out_free_dma_2;
}
ad_write(devc,32,0x80f0); /* sound system mode */
if (options&1) {
ad_write(devc,33,0); /* disable all audiosources for dsp */
} else {
ad_write(devc,33,0x03f8); /* enable all audiosources for dsp */
}
ad_write(devc,4,0x8080); /* default values for volumes (muted)*/
ad_write(devc,5,0x8080);
ad_write(devc,6,0x8080);
ad_write(devc,7,0x8080);
ad_write(devc,15,0x8888);
ad_write(devc,16,0x8888);
ad_write(devc,17,0x8888);
ad_write(devc,18,0x8888);
ad_write(devc,19,0xc888); /* +20db mic active */
ad_write(devc,14,0x0000); /* Master volume unmuted */
ad_write(devc,39,0x009f); /* 3D effect on 0% phone out muted */
ad_write(devc,44,0x0080); /* everything on power, 3d enabled for d/a */
outb(0x10,devc->base+8); /* set dma mode */
outb(0x10,devc->base+9);
/* enable capture + playback interrupt */
ad_write(devc,1,0xc000);
/* set mixer defaults */
ad1816_mixer_reset (devc);
/* register mixer */
if ((audio_devs[oss_devno]->mixer_dev=sound_install_mixer(
MIXER_DRIVER_VERSION,
"AD1816 audio driver",
&ad1816_mixer_operations,
sizeof (struct mixer_operations),
devc)) < 0) {
printk(KERN_WARNING "Can't install mixer\n");
}
/* make ad1816_info active */
nr_ad1816_devs++;
printk(KERN_INFO "ad1816: card successfully installed!\n");
return 1;
/* error handling */
out_free_dma_2:
if (devc->dma_capture >= 0 && devc->dma_capture != devc->dma_playback)
sound_free_dma(devc->dma_capture);
out_free_dma:
sound_free_dma(devc->dma_playback);
out_free_irq:
free_irq(devc->irq, devc);
out_release_region:
release_region(devc->base, 16);
out:
return 0;
}
static void __exit unload_card(ad1816_info *devc)
{
int mixer, dev = 0;
if (devc != NULL) {
printk("ad1816: Unloading card at address 0x%03x\n",devc->base);
dev = devc->dev_no;
mixer = audio_devs[dev]->mixer_dev;
/* unreg mixer*/
if(mixer>=0) {
sound_unload_mixerdev(mixer);
}
/* unreg audiodev */
sound_unload_audiodev(dev);
/* free dma channels */
if (devc->dma_capture>=0 &&
devc->dma_capture != devc->dma_playback) {
sound_free_dma(devc->dma_capture);
}
sound_free_dma (devc->dma_playback);
/* free irq */
free_irq(devc->irq, devc);
/* free io */
release_region (devc->base, 16);
#ifdef __ISAPNP__
if (devc->pnpdev) {
pnp_disable_dev(devc->pnpdev);
pnp_device_detach(devc->pnpdev);
}
#endif
} else
printk(KERN_WARNING "ad1816: no device/card specified\n");
}
static int __initdata io = -1;
static int __initdata irq = -1;
static int __initdata dma = -1;
static int __initdata dma2 = -1;
#ifdef __ISAPNP__
/* use isapnp for configuration */
static int isapnp = 1;
static int isapnpjump;
module_param(isapnp, bool, 0);
module_param(isapnpjump, int, 0);
#endif
module_param(io, int, 0);
module_param(irq, int, 0);
module_param(dma, int, 0);
module_param(dma2, int, 0);
module_param(ad1816_clockfreq, int, 0);
module_param(options, int, 0);
#ifdef __ISAPNP__
static struct {
unsigned short card_vendor, card_device;
unsigned short vendor;
unsigned short function;
struct ad1816_data *data;
} isapnp_ad1816_list[] __initdata = {
{ ISAPNP_ANY_ID, ISAPNP_ANY_ID,
ISAPNP_VENDOR('A','D','S'), ISAPNP_FUNCTION(0x7150),
NULL },
{ ISAPNP_ANY_ID, ISAPNP_ANY_ID,
ISAPNP_VENDOR('A','D','S'), ISAPNP_FUNCTION(0x7180),
NULL },
{0}
};
MODULE_DEVICE_TABLE(isapnp, isapnp_ad1816_list);
static void __init ad1816_config_pnp_card(struct pnp_card *card,
unsigned short vendor,
unsigned short function)
{
struct address_info cfg;
struct pnp_dev *card_dev = pnp_find_dev(card, vendor, function, NULL);
if (!card_dev) return;
if (pnp_device_attach(card_dev) < 0) {
printk(KERN_WARNING "ad1816: Failed to attach PnP device\n");
return;
}
if (pnp_activate_dev(card_dev) < 0) {
printk(KERN_WARNING "ad1816: Failed to activate PnP device\n");
pnp_device_detach(card_dev);
return;
}
cfg.io_base = pnp_port_start(card_dev, 2);
cfg.irq = pnp_irq(card_dev, 0);
cfg.dma = pnp_irq(card_dev, 0);
cfg.dma2 = pnp_irq(card_dev, 1);
if (!ad1816_init_card(&cfg, card_dev)) {
pnp_disable_dev(card_dev);
pnp_device_detach(card_dev);
}
}
static void __init ad1816_config_pnp_cards(void)
{
int nr_pnp_cfg;
int i;
/* Count entries in isapnp_ad1816_list */
for (nr_pnp_cfg = 0; isapnp_ad1816_list[nr_pnp_cfg].card_vendor != 0;
nr_pnp_cfg++);
/* Check and adjust isapnpjump */
if( isapnpjump < 0 || isapnpjump >= nr_pnp_cfg) {
printk(KERN_WARNING
"ad1816: Valid range for isapnpjump is 0-%d. "
"Adjusted to 0.\n", nr_pnp_cfg-1);
isapnpjump = 0;
}
for (i = isapnpjump; isapnp_ad1816_list[i].card_vendor != 0; i++) {
struct pnp_card *card = NULL;
/* iterate over all pnp cards */
while ((card = pnp_find_card(isapnp_ad1816_list[i].card_vendor,
isapnp_ad1816_list[i].card_device, card)))
ad1816_config_pnp_card(card,
isapnp_ad1816_list[i].vendor,
isapnp_ad1816_list[i].function);
}
}
#endif
/* module initialization */
static int __init init_ad1816(void)
{
printk(KERN_INFO "ad1816: AD1816 sounddriver "
"Copyright (C) 1998-2003 by Thorsten Knabe and "
"others\n");
#ifdef AD1816_CLOCK
/* set ad1816_clockfreq if set during compilation */
ad1816_clockfreq=AD1816_CLOCK;
#endif
if (ad1816_clockfreq<5000 || ad1816_clockfreq>100000) {
ad1816_clockfreq=33000;
}
#ifdef __ISAPNP__
/* configure PnP cards */
if(isapnp) ad1816_config_pnp_cards();
#endif
/* configure card by module params */
if (io != -1 && irq != -1 && dma != -1) {
struct address_info cfg;
cfg.io_base = io;
cfg.irq = irq;
cfg.dma = dma;
cfg.dma2 = dma2;
ad1816_init_card(&cfg, NULL);
}
if (nr_ad1816_devs <= 0)
return -ENODEV;
return 0;
}
/* module cleanup */
static void __exit cleanup_ad1816 (void)
{
int i;
ad1816_info *devc = NULL;
/* remove any soundcard */
for (i = 0; i < nr_ad1816_devs; i++) {
devc = &dev_info[i];
unload_card(devc);
}
nr_ad1816_devs=0;
printk(KERN_INFO "ad1816: driver unloaded!\n");
}
module_init(init_ad1816);
module_exit(cleanup_ad1816);
#ifndef MODULE
/* kernel command line parameter evaluation */
static int __init setup_ad1816(char *str)
{
/* io, irq, dma, dma2 */
int ints[5];
str = get_options(str, ARRAY_SIZE(ints), ints);
io = ints[1];
irq = ints[2];
dma = ints[3];
dma2 = ints[4];
return 1;
}
__setup("ad1816=", setup_ad1816);
#endif
MODULE_LICENSE("GPL");
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