/* [<][>][^][v][top][bottom][index][help] */
DEFINITIONS
This source file includes following definitions.
- wavefront_fx_idle
- wavefront_fx_mute
- wavefront_fx_memset
- snd_wavefront_fx_detect
- snd_wavefront_fx_open
- snd_wavefront_fx_release
- snd_wavefront_fx_ioctl
- snd_wavefront_fx_start
/*
* Copyright (c) 1998-2002 by Paul Davis <pbd@op.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <asm/io.h>
#include <linux/init.h>
#include <linux/time.h>
#include <linux/wait.h>
#include <linux/firmware.h>
#include <sound/core.h>
#include <sound/snd_wavefront.h>
#include <sound/initval.h>
/* Control bits for the Load Control Register
*/
#define FX_LSB_TRANSFER 0x01 /* transfer after DSP LSB byte written */
#define FX_MSB_TRANSFER 0x02 /* transfer after DSP MSB byte written */
#define FX_AUTO_INCR 0x04 /* auto-increment DSP address after transfer */
#define WAIT_IDLE 0xff
#ifdef CONFIG_SND_WAVEFRONT_FIRMWARE_IN_KERNEL
#include "yss225.c"
static const struct firmware yss225_registers_firmware = {
.data = (u8 *)yss225_registers,
.size = sizeof yss225_registers
};
#endif
static int
wavefront_fx_idle (snd_wavefront_t *dev)
{
int i;
unsigned int x = 0x80;
for (i = 0; i < 1000; i++) {
x = inb (dev->fx_status);
if ((x & 0x80) == 0) {
break;
}
}
if (x & 0x80) {
snd_printk ("FX device never idle.\n");
return 0;
}
return (1);
}
static void
wavefront_fx_mute (snd_wavefront_t *dev, int onoff)
{
if (!wavefront_fx_idle(dev)) {
return;
}
outb (onoff ? 0x02 : 0x00, dev->fx_op);
}
static int
wavefront_fx_memset (snd_wavefront_t *dev,
int page,
int addr,
int cnt,
unsigned short *data)
{
if (page < 0 || page > 7) {
snd_printk ("FX memset: "
"page must be >= 0 and <= 7\n");
return -(EINVAL);
}
if (addr < 0 || addr > 0x7f) {
snd_printk ("FX memset: "
"addr must be >= 0 and <= 7f\n");
return -(EINVAL);
}
if (cnt == 1) {
outb (FX_LSB_TRANSFER, dev->fx_lcr);
outb (page, dev->fx_dsp_page);
outb (addr, dev->fx_dsp_addr);
outb ((data[0] >> 8), dev->fx_dsp_msb);
outb ((data[0] & 0xff), dev->fx_dsp_lsb);
snd_printk ("FX: addr %d:%x set to 0x%x\n",
page, addr, data[0]);
} else {
int i;
outb (FX_AUTO_INCR|FX_LSB_TRANSFER, dev->fx_lcr);
outb (page, dev->fx_dsp_page);
outb (addr, dev->fx_dsp_addr);
for (i = 0; i < cnt; i++) {
outb ((data[i] >> 8), dev->fx_dsp_msb);
outb ((data[i] & 0xff), dev->fx_dsp_lsb);
if (!wavefront_fx_idle (dev)) {
break;
}
}
if (i != cnt) {
snd_printk ("FX memset "
"(0x%x, 0x%x, 0x%lx, %d) incomplete\n",
page, addr, (unsigned long) data, cnt);
return -(EIO);
}
}
return 0;
}
int
snd_wavefront_fx_detect (snd_wavefront_t *dev)
{
/* This is a crude check, but its the best one I have for now.
Certainly on the Maui and the Tropez, wavefront_fx_idle() will
report "never idle", which suggests that this test should
work OK.
*/
if (inb (dev->fx_status) & 0x80) {
snd_printk ("Hmm, probably a Maui or Tropez.\n");
return -1;
}
return 0;
}
int
snd_wavefront_fx_open (struct snd_hwdep *hw, struct file *file)
{
if (!try_module_get(hw->card->module))
return -EFAULT;
file->private_data = hw;
return 0;
}
int
snd_wavefront_fx_release (struct snd_hwdep *hw, struct file *file)
{
module_put(hw->card->module);
return 0;
}
int
snd_wavefront_fx_ioctl (struct snd_hwdep *sdev, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct snd_card *card;
snd_wavefront_card_t *acard;
snd_wavefront_t *dev;
wavefront_fx_info r;
unsigned short *page_data = NULL;
unsigned short *pd;
int err = 0;
card = sdev->card;
if (snd_BUG_ON(!card))
return -ENODEV;
if (snd_BUG_ON(!card->private_data))
return -ENODEV;
acard = card->private_data;
dev = &acard->wavefront;
if (copy_from_user (&r, (void __user *)arg, sizeof (wavefront_fx_info)))
return -EFAULT;
switch (r.request) {
case WFFX_MUTE:
wavefront_fx_mute (dev, r.data[0]);
return -EIO;
case WFFX_MEMSET:
if (r.data[2] <= 0) {
snd_printk ("cannot write "
"<= 0 bytes to FX\n");
return -EIO;
} else if (r.data[2] == 1) {
pd = (unsigned short *) &r.data[3];
} else {
if (r.data[2] > 256) {
snd_printk ("cannot write "
"> 512 bytes to FX\n");
return -EIO;
}
page_data = kmalloc(r.data[2] * sizeof(short), GFP_KERNEL);
if (!page_data)
return -ENOMEM;
if (copy_from_user (page_data,
(unsigned char __user *) r.data[3],
r.data[2] * sizeof(short))) {
kfree(page_data);
return -EFAULT;
}
pd = page_data;
}
err = wavefront_fx_memset (dev,
r.data[0], /* page */
r.data[1], /* addr */
r.data[2], /* cnt */
pd);
kfree(page_data);
break;
default:
snd_printk ("FX: ioctl %d not yet supported\n",
r.request);
return -ENOTTY;
}
return err;
}
/* YSS225 initialization.
This code was developed using DOSEMU. The Turtle Beach SETUPSND
utility was run with I/O tracing in DOSEMU enabled, and a reconstruction
of the port I/O done, using the Yamaha faxback document as a guide
to add more logic to the code. Its really pretty weird.
This is the approach of just dumping the whole I/O
sequence as a series of port/value pairs and a simple loop
that outputs it.
*/
int __devinit
snd_wavefront_fx_start (snd_wavefront_t *dev)
{
unsigned int i;
int err;
const struct firmware *firmware = NULL;
if (dev->fx_initialized)
return 0;
#ifdef CONFIG_SND_WAVEFRONT_FIRMWARE_IN_KERNEL
firmware = &yss225_registers_firmware;
#else
err = request_firmware(&firmware, "yamaha/yss225_registers.bin",
dev->card->dev);
if (err < 0) {
err = -1;
goto out;
}
#endif
for (i = 0; i + 1 < firmware->size; i += 2) {
if (firmware->data[i] >= 8 && firmware->data[i] < 16) {
outb(firmware->data[i + 1],
dev->base + firmware->data[i]);
} else if (firmware->data[i] == WAIT_IDLE) {
if (!wavefront_fx_idle(dev)) {
err = -1;
goto out;
}
} else {
snd_printk(KERN_ERR "invalid address"
" in register data\n");
err = -1;
goto out;
}
}
dev->fx_initialized = 1;
err = 0;
out:
#ifndef CONFIG_SND_WAVEFRONT_FIRMWARE_IN_KERNEL
release_firmware(firmware);
#endif
return err;
}
#ifndef CONFIG_SND_WAVEFRONT_FIRMWARE_IN_KERNEL
MODULE_FIRMWARE("yamaha/yss225_registers.bin");
#endif