![Dominik Hackl](/assets/img/avatar_default.png)
This patch replaces the deprecated MODULE_PARM function by the new module_param function. Signed-off-by: Dominik Hackl <dominik@hackl.dhs.org> Signed-off-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
353 lines
7.8 KiB
C
353 lines
7.8 KiB
C
/*
|
|
* Copyright (C) 2002 Steve Schmidtke
|
|
* Licensed under the GPL
|
|
*/
|
|
|
|
#include "linux/config.h"
|
|
#include "linux/module.h"
|
|
#include "linux/init.h"
|
|
#include "linux/slab.h"
|
|
#include "linux/fs.h"
|
|
#include "linux/sound.h"
|
|
#include "linux/soundcard.h"
|
|
#include "asm/uaccess.h"
|
|
#include "kern_util.h"
|
|
#include "init.h"
|
|
#include "os.h"
|
|
|
|
struct hostaudio_state {
|
|
int fd;
|
|
};
|
|
|
|
struct hostmixer_state {
|
|
int fd;
|
|
};
|
|
|
|
#define HOSTAUDIO_DEV_DSP "/dev/sound/dsp"
|
|
#define HOSTAUDIO_DEV_MIXER "/dev/sound/mixer"
|
|
|
|
/* Only changed from linux_main at boot time */
|
|
char *dsp = HOSTAUDIO_DEV_DSP;
|
|
char *mixer = HOSTAUDIO_DEV_MIXER;
|
|
|
|
#define DSP_HELP \
|
|
" This is used to specify the host dsp device to the hostaudio driver.\n" \
|
|
" The default is \"" HOSTAUDIO_DEV_DSP "\".\n\n"
|
|
|
|
#define MIXER_HELP \
|
|
" This is used to specify the host mixer device to the hostaudio driver.\n"\
|
|
" The default is \"" HOSTAUDIO_DEV_MIXER "\".\n\n"
|
|
|
|
#ifndef MODULE
|
|
static int set_dsp(char *name, int *add)
|
|
{
|
|
dsp = name;
|
|
return(0);
|
|
}
|
|
|
|
__uml_setup("dsp=", set_dsp, "dsp=<dsp device>\n" DSP_HELP);
|
|
|
|
static int set_mixer(char *name, int *add)
|
|
{
|
|
mixer = name;
|
|
return(0);
|
|
}
|
|
|
|
__uml_setup("mixer=", set_mixer, "mixer=<mixer device>\n" MIXER_HELP);
|
|
|
|
#else /*MODULE*/
|
|
|
|
module_param(dsp, charp, 0644);
|
|
MODULE_PARM_DESC(dsp, DSP_HELP);
|
|
|
|
module_param(mixer, charp, 0644);
|
|
MODULE_PARM_DESC(mixer, MIXER_HELP);
|
|
|
|
#endif
|
|
|
|
/* /dev/dsp file operations */
|
|
|
|
static ssize_t hostaudio_read(struct file *file, char *buffer, size_t count,
|
|
loff_t *ppos)
|
|
{
|
|
struct hostaudio_state *state = file->private_data;
|
|
void *kbuf;
|
|
int err;
|
|
|
|
#ifdef DEBUG
|
|
printk("hostaudio: read called, count = %d\n", count);
|
|
#endif
|
|
|
|
kbuf = kmalloc(count, GFP_KERNEL);
|
|
if(kbuf == NULL)
|
|
return(-ENOMEM);
|
|
|
|
err = os_read_file(state->fd, kbuf, count);
|
|
if(err < 0)
|
|
goto out;
|
|
|
|
if(copy_to_user(buffer, kbuf, err))
|
|
err = -EFAULT;
|
|
|
|
out:
|
|
kfree(kbuf);
|
|
return(err);
|
|
}
|
|
|
|
static ssize_t hostaudio_write(struct file *file, const char *buffer,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct hostaudio_state *state = file->private_data;
|
|
void *kbuf;
|
|
int err;
|
|
|
|
#ifdef DEBUG
|
|
printk("hostaudio: write called, count = %d\n", count);
|
|
#endif
|
|
|
|
kbuf = kmalloc(count, GFP_KERNEL);
|
|
if(kbuf == NULL)
|
|
return(-ENOMEM);
|
|
|
|
err = -EFAULT;
|
|
if(copy_from_user(kbuf, buffer, count))
|
|
goto out;
|
|
|
|
err = os_write_file(state->fd, kbuf, count);
|
|
if(err < 0)
|
|
goto out;
|
|
*ppos += err;
|
|
|
|
out:
|
|
kfree(kbuf);
|
|
return(err);
|
|
}
|
|
|
|
static unsigned int hostaudio_poll(struct file *file,
|
|
struct poll_table_struct *wait)
|
|
{
|
|
unsigned int mask = 0;
|
|
|
|
#ifdef DEBUG
|
|
printk("hostaudio: poll called (unimplemented)\n");
|
|
#endif
|
|
|
|
return(mask);
|
|
}
|
|
|
|
static int hostaudio_ioctl(struct inode *inode, struct file *file,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct hostaudio_state *state = file->private_data;
|
|
unsigned long data = 0;
|
|
int err;
|
|
|
|
#ifdef DEBUG
|
|
printk("hostaudio: ioctl called, cmd = %u\n", cmd);
|
|
#endif
|
|
switch(cmd){
|
|
case SNDCTL_DSP_SPEED:
|
|
case SNDCTL_DSP_STEREO:
|
|
case SNDCTL_DSP_GETBLKSIZE:
|
|
case SNDCTL_DSP_CHANNELS:
|
|
case SNDCTL_DSP_SUBDIVIDE:
|
|
case SNDCTL_DSP_SETFRAGMENT:
|
|
if(get_user(data, (int *) arg))
|
|
return(-EFAULT);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
err = os_ioctl_generic(state->fd, cmd, (unsigned long) &data);
|
|
|
|
switch(cmd){
|
|
case SNDCTL_DSP_SPEED:
|
|
case SNDCTL_DSP_STEREO:
|
|
case SNDCTL_DSP_GETBLKSIZE:
|
|
case SNDCTL_DSP_CHANNELS:
|
|
case SNDCTL_DSP_SUBDIVIDE:
|
|
case SNDCTL_DSP_SETFRAGMENT:
|
|
if(put_user(data, (int *) arg))
|
|
return(-EFAULT);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return(err);
|
|
}
|
|
|
|
static int hostaudio_open(struct inode *inode, struct file *file)
|
|
{
|
|
struct hostaudio_state *state;
|
|
int r = 0, w = 0;
|
|
int ret;
|
|
|
|
#ifdef DEBUG
|
|
printk("hostaudio: open called (host: %s)\n", dsp);
|
|
#endif
|
|
|
|
state = kmalloc(sizeof(struct hostaudio_state), GFP_KERNEL);
|
|
if(state == NULL)
|
|
return(-ENOMEM);
|
|
|
|
if(file->f_mode & FMODE_READ) r = 1;
|
|
if(file->f_mode & FMODE_WRITE) w = 1;
|
|
|
|
ret = os_open_file(dsp, of_set_rw(OPENFLAGS(), r, w), 0);
|
|
if(ret < 0){
|
|
kfree(state);
|
|
return(ret);
|
|
}
|
|
|
|
state->fd = ret;
|
|
file->private_data = state;
|
|
return(0);
|
|
}
|
|
|
|
static int hostaudio_release(struct inode *inode, struct file *file)
|
|
{
|
|
struct hostaudio_state *state = file->private_data;
|
|
|
|
#ifdef DEBUG
|
|
printk("hostaudio: release called\n");
|
|
#endif
|
|
|
|
os_close_file(state->fd);
|
|
kfree(state);
|
|
|
|
return(0);
|
|
}
|
|
|
|
/* /dev/mixer file operations */
|
|
|
|
static int hostmixer_ioctl_mixdev(struct inode *inode, struct file *file,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct hostmixer_state *state = file->private_data;
|
|
|
|
#ifdef DEBUG
|
|
printk("hostmixer: ioctl called\n");
|
|
#endif
|
|
|
|
return(os_ioctl_generic(state->fd, cmd, arg));
|
|
}
|
|
|
|
static int hostmixer_open_mixdev(struct inode *inode, struct file *file)
|
|
{
|
|
struct hostmixer_state *state;
|
|
int r = 0, w = 0;
|
|
int ret;
|
|
|
|
#ifdef DEBUG
|
|
printk("hostmixer: open called (host: %s)\n", mixer);
|
|
#endif
|
|
|
|
state = kmalloc(sizeof(struct hostmixer_state), GFP_KERNEL);
|
|
if(state == NULL) return(-ENOMEM);
|
|
|
|
if(file->f_mode & FMODE_READ) r = 1;
|
|
if(file->f_mode & FMODE_WRITE) w = 1;
|
|
|
|
ret = os_open_file(mixer, of_set_rw(OPENFLAGS(), r, w), 0);
|
|
|
|
if(ret < 0){
|
|
printk("hostaudio_open_mixdev failed to open '%s', err = %d\n",
|
|
dsp, -ret);
|
|
kfree(state);
|
|
return(ret);
|
|
}
|
|
|
|
file->private_data = state;
|
|
return(0);
|
|
}
|
|
|
|
static int hostmixer_release(struct inode *inode, struct file *file)
|
|
{
|
|
struct hostmixer_state *state = file->private_data;
|
|
|
|
#ifdef DEBUG
|
|
printk("hostmixer: release called\n");
|
|
#endif
|
|
|
|
os_close_file(state->fd);
|
|
kfree(state);
|
|
|
|
return(0);
|
|
}
|
|
|
|
|
|
/* kernel module operations */
|
|
|
|
static struct file_operations hostaudio_fops = {
|
|
.owner = THIS_MODULE,
|
|
.llseek = no_llseek,
|
|
.read = hostaudio_read,
|
|
.write = hostaudio_write,
|
|
.poll = hostaudio_poll,
|
|
.ioctl = hostaudio_ioctl,
|
|
.mmap = NULL,
|
|
.open = hostaudio_open,
|
|
.release = hostaudio_release,
|
|
};
|
|
|
|
static struct file_operations hostmixer_fops = {
|
|
.owner = THIS_MODULE,
|
|
.llseek = no_llseek,
|
|
.ioctl = hostmixer_ioctl_mixdev,
|
|
.open = hostmixer_open_mixdev,
|
|
.release = hostmixer_release,
|
|
};
|
|
|
|
struct {
|
|
int dev_audio;
|
|
int dev_mixer;
|
|
} module_data;
|
|
|
|
MODULE_AUTHOR("Steve Schmidtke");
|
|
MODULE_DESCRIPTION("UML Audio Relay");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static int __init hostaudio_init_module(void)
|
|
{
|
|
printk(KERN_INFO "UML Audio Relay (host dsp = %s, host mixer = %s)\n",
|
|
dsp, mixer);
|
|
|
|
module_data.dev_audio = register_sound_dsp(&hostaudio_fops, -1);
|
|
if(module_data.dev_audio < 0){
|
|
printk(KERN_ERR "hostaudio: couldn't register DSP device!\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
module_data.dev_mixer = register_sound_mixer(&hostmixer_fops, -1);
|
|
if(module_data.dev_mixer < 0){
|
|
printk(KERN_ERR "hostmixer: couldn't register mixer "
|
|
"device!\n");
|
|
unregister_sound_dsp(module_data.dev_audio);
|
|
return -ENODEV;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit hostaudio_cleanup_module (void)
|
|
{
|
|
unregister_sound_mixer(module_data.dev_mixer);
|
|
unregister_sound_dsp(module_data.dev_audio);
|
|
}
|
|
|
|
module_init(hostaudio_init_module);
|
|
module_exit(hostaudio_cleanup_module);
|
|
|
|
/*
|
|
* Overrides for Emacs so that we follow Linus's tabbing style.
|
|
* Emacs will notice this stuff at the end of the file and automatically
|
|
* adjust the settings for this buffer only. This must remain at the end
|
|
* of the file.
|
|
* ---------------------------------------------------------------------------
|
|
* Local variables:
|
|
* c-file-style: "linux"
|
|
* End:
|
|
*/
|