static ssize_t
write_aux(struct file *file, const char *buffer, size_t count,
loff_t * ppos)
{
ssize_t retval = 0;
if (count) {
ssize_t written = 0;
if (count > 32)
count = 32; /* Limit to 32 bytes. */
do {
char c;
get_user(c, buffer++);
aux_write_dev(c);
written++;
}
while (--count);
retval = -EIO;
if (written) {
retval = written;
file->f_dentry->d_inode->i_mtime = CURRENT_TIME;
}
}
return retval;
}
/*
* Write to the aux device.
*/
static int write_aux( int minor, const char * buffer, int count )
{
int retval = 0;
if (count) {
int written = 0;
if (count > 32)
count = 32; /* Limit to 32 bytes. */
do {
char c;
c = *buffer++;
aux_write_dev(c);
written++;
} while (--count);
retval = -EIO;
if (written) {
retval = written;
}
}
return retval;
}
static int open_aux(struct inode * inode, struct file * file)
{
if (!aux_present)
return -ENODEV;
if (aux_count++)
return 0;
if (!poll_aux_status()) {
aux_count--;
return -EBUSY;
}
queue->head = queue->tail = 0; /* Flush input queue */
if (request_irq(AUX_IRQ, aux_interrupt, 0, "PS/2 Mouse", NULL)) {
aux_count--;
return -EBUSY;
}
MOD_INC_USE_COUNT;
poll_aux_status();
outb_p(AUX_ENABLE,AUX_COMMAND); /* Enable Aux */
aux_write_dev(AUX_ENABLE_DEV); /* enable aux device */
aux_write_cmd(AUX_INTS_ON); /* enable controller ints */
poll_aux_status();
aux_ready = 0;
return 0;
}