static ssize_t briq_panel_write(struct file *file, const char __user *buf, size_t len,
loff_t *ppos)
{
size_t indx = len;
int i, esc = 0;
#if 0 /* Can't seek (pwrite) on this device */
if (ppos != &file->f_pos)
return -ESPIPE;
#endif
if (!vfd_is_open)
return -EBUSY;
for (;;) {
char c;
if (!indx)
break;
if (get_user(c, buf))
return -EFAULT;
if (esc) {
set_led(c);
esc = 0;
} else if (c == 27) {
esc = 1;
} else if (c == 12) {
/* do a form feed */
for (i=0; i<40; i++)
vfd[i] = ' ';
vfd_cursor = 0;
} else if (c == 10) {
if (vfd_cursor < 20)
vfd_cursor = 20;
else if (vfd_cursor < 40)
vfd_cursor = 40;
else if (vfd_cursor < 60)
vfd_cursor = 60;
if (vfd_cursor > 59)
scroll_vfd();
} else {
/* just a character */
if (vfd_cursor > 39)
scroll_vfd();
vfd[vfd_cursor++] = c;
}
indx--;
buf++;
}
update_vfd();
return len;
}
static ssize_t briq_panel_write(struct file *file, const char __user *buf, size_t len,
loff_t *ppos)
{
size_t indx = len;
int i, esc = 0;
if (!vfd_is_open)
return -EBUSY;
for (;;) {
char c;
if (!indx)
break;
if (get_user(c, buf))
return -EFAULT;
if (esc) {
set_led(c);
esc = 0;
} else if (c == 27) {
esc = 1;
} else if (c == 12) {
for (i=0; i<40; i++)
vfd[i] = ' ';
vfd_cursor = 0;
} else if (c == 10) {
if (vfd_cursor < 20)
vfd_cursor = 20;
else if (vfd_cursor < 40)
vfd_cursor = 40;
else if (vfd_cursor < 60)
vfd_cursor = 60;
if (vfd_cursor > 59)
scroll_vfd();
} else {
if (vfd_cursor > 39)
scroll_vfd();
vfd[vfd_cursor++] = c;
}
indx--;
buf++;
}
update_vfd();
return len;
}
