/* interrogate the DoubleTalk PC and return its settings */
static struct dtlk_settings *dtlk_interrogate(void)
{
unsigned char *t;
static char buf[sizeof(struct dtlk_settings) + 1];
int total, i;
static struct dtlk_settings status;
TRACE_TEXT("(dtlk_interrogate");
dtlk_write_bytes("\030\001?", 3);
for (total = 0, i = 0; i < 50; i++) {
buf[total] = dtlk_read_tts();
if (total > 2 && buf[total] == 0x7f)
break;
if (total < sizeof(struct dtlk_settings))
total++;
}
/*
if (i==50) printk("interrogate() read overrun\n");
for (i=0; i<sizeof(buf); i++)
printk(" %02x", buf[i]);
printk("\n");
*/
t = buf;
status.serial_number = t[0] + t[1] * 256; /* serial number is
little endian */
t += 2;
i = 0;
while (*t != '\r') {
status.rom_version[i] = *t;
if (i < sizeof(status.rom_version) - 1)
i++;
t++;
}
status.rom_version[i] = 0;
t++;
status.mode = *t++;
status.punc_level = *t++;
status.formant_freq = *t++;
status.pitch = *t++;
status.speed = *t++;
status.volume = *t++;
status.tone = *t++;
status.expression = *t++;
status.ext_dict_loaded = *t++;
status.ext_dict_status = *t++;
status.free_ram = *t++;
status.articulation = *t++;
status.reverb = *t++;
status.eob = *t++;
status.has_indexing = dtlk_has_indexing;
TRACE_RET;
return &status;
}
static void __exit dtlk_cleanup (void)
{
dtlk_write_bytes("goodbye", 8);
msleep_interruptible(500); /* nap 0.50 sec but
could be awakened
earlier by
signals... */
dtlk_write_tts(DTLK_CLEAR);
unregister_chrdev(dtlk_major, "dtlk");
release_region(dtlk_port_lpc, DTLK_IO_EXTENT);
}
static void __exit dtlk_cleanup (void)
{
dtlk_write_bytes("goodbye", 8);
current->state = TASK_INTERRUPTIBLE;
schedule_timeout(5 * HZ / 10); /* nap 0.50 sec but
could be awakened
earlier by
signals... */
dtlk_write_tts(DTLK_CLEAR);
devfs_unregister_chrdev(dtlk_major, "dtlk");
devfs_unregister(devfs_handle);
release_region(dtlk_port_lpc, DTLK_IO_EXTENT);
}
static int __init dtlk_dev_probe(void)
{
unsigned int testval = 0;
int i = 0;
struct dtlk_settings *sp;
if (dtlk_port_lpc | dtlk_port_tts)
return -EBUSY;
for (i = 0; dtlk_portlist[i]; i++) {
#if 0
printk("DoubleTalk PC - Port %03x = %04x\n",
dtlk_portlist[i], (testval = inw_p(dtlk_portlist[i])));
#endif
if (!request_region(dtlk_portlist[i], DTLK_IO_EXTENT,
"dtlk"))
continue;
testval = inw_p(dtlk_portlist[i]);
if ((testval &= 0xfbff) == 0x107f) {
dtlk_port_lpc = dtlk_portlist[i];
dtlk_port_tts = dtlk_port_lpc + 1;
sp = dtlk_interrogate();
printk("DoubleTalk PC at %03x-%03x, "
"ROM version %s, serial number %u",
dtlk_portlist[i], dtlk_portlist[i] +
DTLK_IO_EXTENT - 1,
sp->rom_version, sp->serial_number);
/* put LPC port into known state, so
dtlk_readable() gives valid result */
outb_p(0xff, dtlk_port_lpc);
/* INIT string and index marker */
dtlk_write_bytes("\036\1@\0\0012I\r", 8);
/* posting an index takes 18 msec. Here, we
wait up to 100 msec to see whether it
appears. */
msleep_interruptible(100);
dtlk_has_indexing = dtlk_readable();
#ifdef TRACING
printk(", indexing %d\n", dtlk_has_indexing);
#endif
#ifdef INSCOPE
{
/* This macro records ten samples read from the LPC port, for later display */
#define LOOK \
for (i = 0; i < 10; i++) \
{ \
buffer[b++] = inb_p(dtlk_port_lpc); \
__delay(loops_per_jiffy/(1000000/HZ)); \
}
char buffer[1000];
int b = 0, i, j;
LOOK
outb_p(0xff, dtlk_port_lpc);
buffer[b++] = 0;
LOOK
dtlk_write_bytes("\0012I\r", 4);
buffer[b++] = 0;
__delay(50 * loops_per_jiffy / (1000/HZ));
outb_p(0xff, dtlk_port_lpc);
buffer[b++] = 0;
LOOK
printk("\n");
for (j = 0; j < b; j++)
printk(" %02x", buffer[j]);
printk("\n");
}
#endif /* INSCOPE */
#ifdef OUTSCOPE
{
/* This macro records ten samples read from the TTS port, for later display */
#define LOOK \
for (i = 0; i < 10; i++) \
{ \
buffer[b++] = inb_p(dtlk_port_tts); \
__delay(loops_per_jiffy/(1000000/HZ)); /* 1 us */ \
}
char buffer[1000];
int b = 0, i, j;
mdelay(10); /* 10 ms */
LOOK
outb_p(0x03, dtlk_port_tts);
buffer[b++] = 0;
LOOK
LOOK
printk("\n");
for (j = 0; j < b; j++)
printk(" %02x", buffer[j]);
printk("\n");
}
#endif /* OUTSCOPE */
dtlk_write_bytes("Double Talk found", 18);
return 0;
}
release_region(dtlk_portlist[i], DTLK_IO_EXTENT);
}
printk(KERN_INFO "DoubleTalk PC - not found\n");
return -ENODEV;
}
