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/*
* Copyright (C) by Hannu Savolainen 1993-1997
*
* cs4232.c
*
* The low level driver for Crystal CS4232 based cards. The CS4232 is
* a PnP compatible chip which contains a CS4231A codec, SB emulation,
* a MPU401 compatible MIDI port, joystick and synthesizer and IDE CD-ROM
* interfaces. This is just a temporary driver until full PnP support
* gets implemented. Just the WSS codec, FM synth and the MIDI ports are
* supported. Other interfaces are left uninitialized.
*
* ifdef ...WAVEFRONT...
*
* Support is provided for initializing the WaveFront synth
* interface as well, which is logical device #4. Note that if
* you have a Tropez+ card, you probably don't need to setup
* the CS4232-supported MIDI interface, since it corresponds to
* the internal 26-pin header that's hard to access. Using this
* requires an additional IRQ, a resource none too plentiful in
* this environment. Just don't set module parameters mpuio and
* mpuirq, and the MIDI port will be left uninitialized. You can
* still use the ICS2115 hosted MIDI interface which corresponds
* to the 9-pin D connector on the back of the card.
*
* endif ...WAVEFRONT...
*
* Supported chips are:
* CS4232
* CS4236
* CS4236B
*
* Note: You will need a PnP config setup to initialise some CS4232 boards
* anyway.
*
* Changes
* Alan Cox Modularisation, Basic cleanups.
* Paul Barton-Davis Separated MPU configuration, added
* Tropez+ (WaveFront) support
* Christoph Hellwig Adapted to module_init/module_exit,
* simple cleanups
* Arnaldo C. de Melo got rid of attach_uart401
* Bartlomiej Zolnierkiewicz
* Added some __init/__initdata/__exit
* Marcus Meissner Added ISA PnP support.
*/
#include <linux/config.h>
#include <linux/isapnp.h>
#include <linux/module.h>
#include <linux/init.h>
#include "sound_config.h"
#include "cs4232.h"
#include "ad1848.h"
#include "mpu401.h"
#define KEY_PORT 0x279 /* Same as LPT1 status port */
#define CSN_NUM 0x99 /* Just a random number */
static void CS_OUT(unsigned char a)
{
outb(a, KEY_PORT);
}
#define CS_OUT2(a, b) {CS_OUT(a);CS_OUT(b);}
#define CS_OUT3(a, b, c) {CS_OUT(a);CS_OUT(b);CS_OUT(c);}
static int mpu_base = 0, mpu_irq = 0;
static int synth_base = 0, synth_irq = 0;
static int mpu_detected = 0;
int __init probe_cs4232_mpu(struct address_info *hw_config)
{
/*
* Just write down the config values.
*/
mpu_base = hw_config->io_base;
mpu_irq = hw_config->irq;
return 1;
}
static unsigned char crystal_key[] __initdata = /* A 32 byte magic key sequence */
{
0x96, 0x35, 0x9a, 0xcd, 0xe6, 0xf3, 0x79, 0xbc,
0x5e, 0xaf, 0x57, 0x2b, 0x15, 0x8a, 0xc5, 0xe2,
0xf1, 0xf8, 0x7c, 0x3e, 0x9f, 0x4f, 0x27, 0x13,
0x09, 0x84, 0x42, 0xa1, 0xd0, 0x68, 0x34, 0x1a
};
static void sleep(unsigned howlong)
{
current->state = TASK_INTERRUPTIBLE;
schedule_timeout(howlong);
}
int __init probe_cs4232(struct address_info *hw_config, int isapnp_configured)
{
int i, n;
int base = hw_config->io_base, irq = hw_config->irq;
int dma1 = hw_config->dma, dma2 = hw_config->dma2;
/*
* Verify that the I/O port range is free.
*/
if (check_region(base, 4))
{
printk(KERN_ERR "cs4232.c: I/O port 0x%03x not free\n", base);
return 0;
}
if (ad1848_detect(hw_config->io_base, NULL, hw_config->osp)) {
return 1; /* The card is already active */
}
if (isapnp_configured) {
printk(KERN_ERR "cs4232.c: ISA PnP configured, but not detected?\n");
return 0;
}
/*
* This version of the driver doesn't use the PnP method when configuring
* the card but a simplified method defined by Crystal. This means that
* just one CS4232 compatible device can exist on the system. Also this
* method conflicts with possible PnP support in the OS. For this reason
* driver is just a temporary kludge.
*
* Also the Cirrus/Crystal method doesnt always work. Try ISA PnP first ;)
*/
/*
* Repeat initialization few times since it doesn't always succeed in
* first time.
*/
for (n = 0; n < 4; n++)
{
/*
* Wake up the card by sending a 32 byte Crystal key to the key port.
*/
for (i = 0; i < 32; i++)
CS_OUT(crystal_key[i]);
sleep(HZ / 10);
/*
* Now set the CSN (Card Select Number).
*/
CS_OUT2(0x06, CSN_NUM);
/*
* Then set some config bytes. First logical device 0
*/
CS_OUT2(0x15, 0x00); /* Select logical device 0 (WSS/SB/FM) */
CS_OUT3(0x47, (base >> 8) & 0xff, base & 0xff); /* WSS base */
if (check_region(0x388, 4)) /* Not free */
CS_OUT3(0x48, 0x00, 0x00) /* FM base off */
else
CS_OUT3(0x48, 0x03, 0x88); /* FM base 0x388 */
CS_OUT3(0x42, 0x00, 0x00); /* SB base off */
CS_OUT2(0x22, irq); /* SB+WSS IRQ */
CS_OUT2(0x2a, dma1); /* SB+WSS DMA */
if (dma2 != -1)
CS_OUT2(0x25, dma2) /* WSS DMA2 */
else
CS_OUT2(0x25, 4); /* No WSS DMA2 */
CS_OUT2(0x33, 0x01); /* Activate logical dev 0 */
sleep(HZ / 10);
/*
* Initialize logical device 3 (MPU)
*/
if (mpu_base != 0 && mpu_irq != 0)
{
CS_OUT2(0x15, 0x03); /* Select logical device 3 (MPU) */
CS_OUT3(0x47, (mpu_base >> 8) & 0xff, mpu_base & 0xff); /* MPU base */
CS_OUT2(0x22, mpu_irq); /* MPU IRQ */
CS_OUT2(0x33, 0x01); /* Activate logical dev 3 */
}
if(synth_base != 0)
{
CS_OUT2 (0x15, 0x04); /* logical device 4 (WaveFront) */
CS_OUT3 (0x47, (synth_base >> 8) & 0xff,
synth_base & 0xff); /* base */
CS_OUT2 (0x22, synth_irq); /* IRQ */
CS_OUT2 (0x33, 0x01); /* Activate logical dev 4 */
}
/*
* Finally activate the chip
*/
CS_OUT(0x79);
sleep(HZ / 5);
/*
* Then try to detect the codec part of the chip
*/
if (ad1848_detect(hw_config->io_base, NULL, hw_config->osp))
return 1;
sleep(HZ);
}
return 0;
}
void __init attach_cs4232(struct address_info *hw_config)
{
int base = hw_config->io_base,
irq = hw_config->irq,
dma1 = hw_config->dma,
dma2 = hw_config->dma2;
if (base == -1 || irq == -1 || dma1 == -1) {
printk(KERN_ERR "cs4232: dma, irq and io must be set.\n");
return;
}
if (dma2 == -1)
dma2 = dma1;
hw_config->slots[0] = ad1848_init("Crystal audio controller", base,
irq,
dma1, /* Playback DMA */
dma2, /* Capture DMA */
0,
hw_config->osp,
THIS_MODULE);
if (hw_config->slots[0] != -1 &&
audio_devs[hw_config->slots[0]]->mixer_dev!=-1)
{
/* Assume the mixer map is as suggested in the CS4232 databook */
AD1848_REROUTE(SOUND_MIXER_LINE1, SOUND_MIXER_LINE);
AD1848_REROUTE(SOUND_MIXER_LINE2, SOUND_MIXER_CD);
AD1848_REROUTE(SOUND_MIXER_LINE3, SOUND_MIXER_SYNTH); /* FM synth */
}
if (mpu_base != 0 && mpu_irq != 0)
{
static struct address_info hw_config2 = {
0
}; /* Ensure it's initialized */
hw_config2.io_base = mpu_base;
hw_config2.irq = mpu_irq;
hw_config2.dma = -1;
hw_config2.dma2 = -1;
hw_config2.always_detect = 0;
hw_config2.name = NULL;
hw_config2.driver_use_1 = 0;
hw_config2.driver_use_2 = 0;
hw_config2.card_subtype = 0;
if (probe_uart401(&hw_config2, THIS_MODULE))
{
mpu_detected = 1;
}
else
{
mpu_base = mpu_irq = 0;
}
hw_config->slots[1] = hw_config2.slots[1];
}
}
void unload_cs4232(struct address_info *hw_config)
{
int base = hw_config->io_base, irq = hw_config->irq;
int dma1 = hw_config->dma, dma2 = hw_config->dma2;
if (dma2 == -1)
dma2 = dma1;
ad1848_unload(base,
irq,
dma1, /* Playback DMA */
dma2, /* Capture DMA */
0);
sound_unload_audiodev(hw_config->slots[0]);
if (mpu_base != 0 && mpu_irq != 0 && mpu_detected)
{
static struct address_info hw_config2 =
{
0
}; /* Ensure it's initialized */
hw_config2.io_base = mpu_base;
hw_config2.irq = mpu_irq;
hw_config2.dma = -1;
hw_config2.dma2 = -1;
hw_config2.always_detect = 0;
hw_config2.name = NULL;
hw_config2.driver_use_1 = 0;
hw_config2.driver_use_2 = 0;
hw_config2.card_subtype = 0;
hw_config2.slots[1] = hw_config->slots[1];
unload_uart401(&hw_config2);
}
}
static struct address_info cfg;
static struct address_info cfg_mpu;
static int __initdata io = -1;
static int __initdata irq = -1;
static int __initdata dma = -1;
static int __initdata dma2 = -1;
static int __initdata mpuio = -1;
static int __initdata mpuirq = -1;
static int __initdata synthio = -1;
static int __initdata synthirq = -1;
static int __initdata isapnp = 1;
MODULE_DESCRIPTION("CS4232 based soundcard driver");
MODULE_AUTHOR("Hannu Savolainen, Paul Barton-Davis");
MODULE_LICENSE("GPL");
MODULE_PARM(io,"i");
MODULE_PARM_DESC(io,"base I/O port for AD1848");
MODULE_PARM(irq,"i");
MODULE_PARM_DESC(irq,"IRQ for AD1848 chip");
MODULE_PARM(dma,"i");
MODULE_PARM_DESC(dma,"8 bit DMA for AD1848 chip");
MODULE_PARM(dma2,"i");
MODULE_PARM_DESC(dma2,"16 bit DMA for AD1848 chip");
MODULE_PARM(mpuio,"i");
MODULE_PARM_DESC(mpuio,"MPU 401 base address");
MODULE_PARM(mpuirq,"i");
MODULE_PARM_DESC(mpuirq,"MPU 401 IRQ");
MODULE_PARM(synthio,"i");
MODULE_PARM_DESC(synthio,"Maui WaveTable base I/O port");
MODULE_PARM(synthirq,"i");
MODULE_PARM_DESC(synthirq,"Maui WaveTable IRQ");
MODULE_PARM(isapnp,"i");
MODULE_PARM_DESC(isapnp,"Enable ISAPnP probing (default 1)");
/*
* Install a CS4232 based card. Need to have ad1848 and mpu401
* loaded ready.
*/
/* All cs4232 based cards have the main ad1848 card either as CSC0000 or
* CSC0100. */
struct isapnp_device_id isapnp_cs4232_list[] __initdata = {
{ ISAPNP_ANY_ID, ISAPNP_ANY_ID,
ISAPNP_VENDOR('C','S','C'), ISAPNP_FUNCTION(0x0100),
0 },
{ ISAPNP_ANY_ID, ISAPNP_ANY_ID,
ISAPNP_VENDOR('C','S','C'), ISAPNP_FUNCTION(0x0000),
0 },
/* Guillemot Turtlebeach something appears to be cs4232 compatible
* (untested) */
{ ISAPNP_VENDOR('C','S','C'), ISAPNP_ANY_ID,
ISAPNP_VENDOR('G','I','M'), ISAPNP_FUNCTION(0x0100),
0 },
{0}
};
MODULE_DEVICE_TABLE(isapnp, isapnp_cs4232_list);
int cs4232_isapnp_probe(struct pci_dev *dev, const struct isapnp_device_id *id)
{
int ret;
struct address_info *isapnpcfg;
isapnpcfg=(struct address_info*)kmalloc(sizeof(*isapnpcfg),GFP_KERNEL);
if (!isapnpcfg)
return -ENOMEM;
/*
* If device is active, assume configured with /proc/isapnp
* and use anyway. Any other way to check this?
*/
ret = dev->prepare(dev);
if(ret && ret != -EBUSY) {
printk(KERN_ERR "cs4232: ISA PnP found device that could not be autoconfigured.\n");
kfree(isapnpcfg);
return -ENODEV;
}
if(ret != -EBUSY) {
if(dev->activate(dev) < 0) {
printk(KERN_WARNING "cs4232: ISA PnP activate failed\n");
kfree(isapnpcfg);
return -ENODEV;
}
} /* else subfunction is already activated */
isapnpcfg->irq = dev->irq_resource[0].start;
isapnpcfg->dma = dev->dma_resource[0].start;
isapnpcfg->dma2 = dev->dma_resource[1].start;
isapnpcfg->io_base = dev->resource[0].start;
if (probe_cs4232(isapnpcfg,TRUE) == 0) {
printk(KERN_ERR "cs4232: ISA PnP card found, but not detected?\n");
return -ENODEV;
}
attach_cs4232(isapnpcfg);
pci_set_drvdata(dev,isapnpcfg);
return 0;
}
static int __init init_cs4232(void)
{
#ifdef CONFIG_SOUND_WAVEFRONT_MODULE
if(synthio == -1)
printk(KERN_INFO "cs4232: set synthio and synthirq to use the wavefront facilities.\n");
else {
synth_base = synthio;
synth_irq = synthirq;
}
#else
if(synthio != -1)
printk(KERN_WARNING "cs4232: wavefront support not enabled in this driver.\n");
#endif
cfg.irq = -1;
if (isapnp &&
(isapnp_probe_devs(isapnp_cs4232_list, cs4232_isapnp_probe) > 0)
)
return 0;
if(io==-1||irq==-1||dma==-1)
{
printk(KERN_ERR "cs4232: Must set io, irq and dma.\n");
return -ENODEV;
}
cfg.io_base = io;
cfg.irq = irq;
cfg.dma = dma;
cfg.dma2 = dma2;
cfg_mpu.io_base = -1;
cfg_mpu.irq = -1;
if (mpuio != -1 && mpuirq != -1) {
cfg_mpu.io_base = mpuio;
cfg_mpu.irq = mpuirq;
probe_cs4232_mpu(&cfg_mpu); /* Bug always returns 0 not OK -- AC */
}
if (probe_cs4232(&cfg,FALSE) == 0)
return -ENODEV;
attach_cs4232(&cfg);
return 0;
}
int cs4232_isapnp_remove(struct pci_dev *dev, const struct isapnp_device_id *id)
{
struct address_info *cfg = (struct address_info*)pci_get_drvdata(dev);
if (cfg) unload_cs4232(cfg);
pci_set_drvdata(dev,NULL);
dev->deactivate(dev);
return 0;
}
static void __exit cleanup_cs4232(void)
{
isapnp_probe_devs(isapnp_cs4232_list, cs4232_isapnp_remove);
if (cfg.irq != -1)
unload_cs4232(&cfg); /* Unloads global MPU as well, if needed */
}
module_init(init_cs4232);
module_exit(cleanup_cs4232);
#ifndef MODULE
static int __init setup_cs4232(char *str)
{
/* io, irq, dma, dma2 mpuio, mpuirq*/
int ints[7];
/* If we have isapnp cards, no need for options */
if (isapnp_probe_devs(isapnp_cs4232_list, cs4232_isapnp_probe) > 0)
return 1;
str = get_options(str, ARRAY_SIZE(ints), ints);
io = ints[1];
irq = ints[2];
dma = ints[3];
dma2 = ints[4];
mpuio = ints[5];
mpuirq = ints[6];
return 1;
}
__setup("cs4232=", setup_cs4232);
#endif
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