- 根目录:
- drivers
- staging
- speakup
- synth.c
#include <linux/types.h>
#include <linux/ctype.h> /* for isdigit() and friends */
#include <linux/fs.h>
#include <linux/mm.h> /* for verify_area */
#include <linux/errno.h> /* for -EBUSY */
#include <linux/ioport.h> /* for check_region, request_region */
#include <linux/interrupt.h>
#include <linux/delay.h> /* for loops_per_sec */
#include <linux/kmod.h>
#include <linux/jiffies.h>
#include <linux/uaccess.h> /* for copy_from_user */
#include <linux/sched.h>
#include <linux/timer.h>
#include <linux/kthread.h>
#include "spk_priv.h"
#include "speakup.h"
#include "serialio.h"
#define MAXSYNTHS 16 /* Max number of synths in array. */
static struct spk_synth *synths[MAXSYNTHS];
struct spk_synth *synth;
char pitch_buff[32] = "";
static int module_status;
int quiet_boot;
struct speakup_info_t speakup_info = {
.spinlock = __SPIN_LOCK_UNLOCKED(speakup_info.spinlock),
.flushing = 0,
};
EXPORT_SYMBOL_GPL(speakup_info);
static int do_synth_init(struct spk_synth *in_synth);
int serial_synth_probe(struct spk_synth *synth)
{
struct serial_state *ser;
int failed = 0;
if ((synth->ser >= SPK_LO_TTY) && (synth->ser <= SPK_HI_TTY)) {
ser = spk_serial_init(synth->ser);
if (ser == NULL) {
failed = -1;
} else {
outb_p(0, ser->port);
mdelay(1);
outb_p('\r', ser->port);
}
} else {
failed = -1;
pr_warn("ttyS%i is an invalid port\n", synth->ser);
}
if (failed) {
pr_info("%s: not found\n", synth->long_name);
return -ENODEV;
}
pr_info("%s: ttyS%i, Driver Version %s\n",
synth->long_name, synth->ser, synth->version);
synth->alive = 1;
return 0;
}
EXPORT_SYMBOL_GPL(serial_synth_probe);
/* Main loop of the progression thread: keep eating from the buffer
* and push to the serial port, waiting as needed
*
* For devices that have a "full" notification mecanism, the driver can
* adapt the loop the way they prefer.
*/
void spk_do_catch_up(struct spk_synth *synth)
{
u_char ch;
unsigned long flags;
unsigned long jiff_max;
struct var_t *delay_time;
struct var_t *full_time;
struct var_t *jiffy_delta;
int jiffy_delta_val;
int delay_time_val;
int full_time_val;
jiffy_delta = get_var(JIFFY);
full_time = get_var(FULL);
delay_time = get_var(DELAY);
spk_lock(flags);
jiffy_delta_val = jiffy_delta->u.n.value;
spk_unlock(flags);
jiff_max = jiffies + jiffy_delta_val;
while (!kthread_should_stop()) {
spk_lock(flags);
if (speakup_info.flushing) {
speakup_info.flushing = 0;
spk_unlock(flags);
synth->flush(synth);
continue;
}
if (synth_buffer_empty()) {
spk_unlock(flags);
break;
}
ch = synth_buffer_peek();
set_current_state(TASK_INTERRUPTIBLE);
full_time_val = full_time->u.n.value;
spk_unlock(flags);
if (ch == '\n')
ch = synth->procspeech;
if (!spk_serial_out(ch)) {
schedule_timeout(msecs_to_jiffies(full_time_val));
continue;
}
if ((jiffies >= jiff_max) && (ch == SPACE)) {
spk_lock(flags);
jiffy_delta_val = jiffy_delta->u.n.value;
delay_time_val = delay_time->u.n.value;
full_time_val = full_time->u.n.value;
spk_unlock(flags);
if (spk_serial_out(synth->procspeech))
schedule_timeout(
msecs_to_jiffies(delay_time_val));
else
schedule_timeout(
msecs_to_jiffies(full_time_val));
jiff_max = jiffies + jiffy_delta_val;
}
set_current_state(TASK_RUNNING);
spk_lock(flags);
synth_buffer_getc();
spk_unlock(flags);
}
spk_serial_out(synth->procspeech);
}
EXPORT_SYMBOL_GPL(spk_do_catch_up);
const char *spk_synth_immediate(struct spk_synth *synth, const char *buff)
{
u_char ch;
while ((ch = *buff)) {
if (ch == '\n')
ch = synth->procspeech;
if (wait_for_xmitr())
outb(ch, speakup_info.port_tts);
else
return buff;
buff++;
}
return 0;
}
EXPORT_SYMBOL_GPL(spk_synth_immediate);
void spk_synth_flush(struct spk_synth *synth)
{
spk_serial_out(synth->clear);
}
EXPORT_SYMBOL_GPL(spk_synth_flush);
int spk_synth_is_alive_nop(struct spk_synth *synth)
{
synth->alive = 1;
return 1;
}
EXPORT_SYMBOL_GPL(spk_synth_is_alive_nop);
int spk_synth_is_alive_restart(struct spk_synth *synth)
{
if (synth->alive)
return 1;
if (!synth->alive && wait_for_xmitr() > 0) {
/* restart */
synth->alive = 1;
synth_printf("%s", synth->init);
return 2; /* reenabled */
}
pr_warn("%s: can't restart synth\n", synth->long_name);
return 0;
}
EXPORT_SYMBOL_GPL(spk_synth_is_alive_restart);
static void thread_wake_up(u_long data)
{
wake_up_interruptible_all(&speakup_event);
}
static DEFINE_TIMER(thread_timer, thread_wake_up, 0, 0);
void synth_start(void)
{
struct var_t *trigger_time;
if (!synth->alive) {
synth_buffer_clear();
return;
}
trigger_time = get_var(TRIGGER);
if (!timer_pending(&thread_timer))
mod_timer(&thread_timer, jiffies +
msecs_to_jiffies(trigger_time->u.n.value));
}
void do_flush(void)
{
speakup_info.flushing = 1;
synth_buffer_clear();
if (synth->alive) {
if (pitch_shift) {
synth_printf("%s", pitch_buff);
pitch_shift = 0;
}
}
wake_up_interruptible_all(&speakup_event);
wake_up_process(speakup_task);
}
void synth_write(const char *buf, size_t count)
{
while (count--)
synth_buffer_add(*buf++);
synth_start();
}
void synth_printf(const char *fmt, ...)
{
va_list args;
unsigned char buf[160], *p;
int r;
va_start(args, fmt);
r = vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
if (r > sizeof(buf) - 1)
r = sizeof(buf) - 1;
p = buf;
while (r--)
synth_buffer_add(*p++);
synth_start();
}
EXPORT_SYMBOL_GPL(synth_printf);
static int index_count;
static int sentence_count;
void reset_index_count(int sc)
{
static int first = 1;
if (first)
first = 0;
else
synth->get_index();
index_count = 0;
sentence_count = sc;
}
int synth_supports_indexing(void)
{
if (synth->get_index != NULL)
return 1;
return 0;
}
void synth_insert_next_index(int sent_num)
{
int out;
if (synth->alive) {
if (sent_num == 0) {
synth->indexing.currindex++;
index_count++;
if (synth->indexing.currindex >
synth->indexing.highindex)
synth->indexing.currindex =
synth->indexing.lowindex;
}
out = synth->indexing.currindex * 10 + sent_num;
synth_printf(synth->indexing.command, out, out);
}
}
void get_index_count(int *linecount, int *sentcount)
{
int ind = synth->get_index();
if (ind) {
sentence_count = ind % 10;
if ((ind / 10) <= synth->indexing.currindex)
index_count = synth->indexing.currindex-(ind/10);
else
index_count = synth->indexing.currindex
-synth->indexing.lowindex
+ synth->indexing.highindex-(ind/10)+1;
}
*sentcount = sentence_count;
*linecount = index_count;
}
static struct resource synth_res;
int synth_request_region(unsigned long start, unsigned long n)
{
struct resource *parent = &ioport_resource;
memset(&synth_res, 0, sizeof(synth_res));
synth_res.name = synth->name;
synth_res.start = start;
synth_res.end = start + n - 1;
synth_res.flags = IORESOURCE_BUSY;
return request_resource(parent, &synth_res);
}
EXPORT_SYMBOL_GPL(synth_request_region);
int synth_release_region(unsigned long start, unsigned long n)
{
return release_resource(&synth_res);
}
EXPORT_SYMBOL_GPL(synth_release_region);
struct var_t synth_time_vars[] = {
{ DELAY, .u.n = {NULL, 100, 100, 2000, 0, 0, NULL } },
{ TRIGGER, .u.n = {NULL, 20, 10, 2000, 0, 0, NULL } },
{ JIFFY, .u.n = {NULL, 50, 20, 200, 0, 0, NULL } },
{ FULL, .u.n = {NULL, 400, 200, 60000, 0, 0, NULL } },
V_LAST_VAR
};
/* called by: speakup_init() */
int synth_init(char *synth_name)
{
int i;
int ret = 0;
struct spk_synth *synth = NULL;
if (synth_name == NULL)
return 0;
if (strcmp(synth_name, "none") == 0) {
mutex_lock(&spk_mutex);
synth_release();
mutex_unlock(&spk_mutex);
return 0;
}
mutex_lock(&spk_mutex);
/* First, check if we already have it loaded. */
for (i = 0; i < MAXSYNTHS && synths[i] != NULL; i++)
if (strcmp(synths[i]->name, synth_name) == 0)
synth = synths[i];
/* If we got one, initialize it now. */
if (synth)
ret = do_synth_init(synth);
else
ret = -ENODEV;
mutex_unlock(&spk_mutex);
return ret;
}
/* called by: synth_add() */
static int do_synth_init(struct spk_synth *in_synth)
{
struct var_t *var;
synth_release();
if (in_synth->checkval != SYNTH_CHECK)
return -EINVAL;
synth = in_synth;
synth->alive = 0;
pr_warn("synth probe\n");
if (synth->probe(synth) < 0) {
pr_warn("%s: device probe failed\n", in_synth->name);
synth = NULL;
return -ENODEV;
}
synth_time_vars[0].u.n.value =
synth_time_vars[0].u.n.default_val = synth->delay;
synth_time_vars[1].u.n.value =
synth_time_vars[1].u.n.default_val = synth->trigger;
synth_time_vars[2].u.n.value =
synth_time_vars[2].u.n.default_val = synth->jiffies;
synth_time_vars[3].u.n.value =
synth_time_vars[3].u.n.default_val = synth->full;
synth_printf("%s", synth->init);
for (var = synth->vars;
(var->var_id >= 0) && (var->var_id < MAXVARS); var++)
speakup_register_var(var);
if (!quiet_boot)
synth_printf("%s found\n", synth->long_name);
if (synth->attributes.name
&& sysfs_create_group(speakup_kobj, &(synth->attributes)) < 0)
return -ENOMEM;
synth_flags = synth->flags;
wake_up_interruptible_all(&speakup_event);
if (speakup_task)
wake_up_process(speakup_task);
return 0;
}
void synth_release(void)
{
struct var_t *var;
unsigned long flags;
if (synth == NULL)
return;
spk_lock(flags);
pr_info("releasing synth %s\n", synth->name);
synth->alive = 0;
del_timer(&thread_timer);
spk_unlock(flags);
if (synth->attributes.name)
sysfs_remove_group(speakup_kobj, &(synth->attributes));
for (var = synth->vars; var->var_id != MAXVARS; var++)
speakup_unregister_var(var->var_id);
stop_serial_interrupt();
synth->release();
synth = NULL;
}
/* called by: all_driver_init() */
int synth_add(struct spk_synth *in_synth)
{
int i;
int status = 0;
mutex_lock(&spk_mutex);
for (i = 0; i < MAXSYNTHS && synths[i] != NULL; i++)
/* synth_remove() is responsible for rotating the array down */
if (in_synth == synths[i]) {
mutex_unlock(&spk_mutex);
return 0;
}
if (i == MAXSYNTHS) {
pr_warn("Error: attempting to add a synth past end of array\n");
mutex_unlock(&spk_mutex);
return -1;
}
synths[i++] = in_synth;
synths[i] = NULL;
if (in_synth->startup)
status = do_synth_init(in_synth);
mutex_unlock(&spk_mutex);
return status;
}
EXPORT_SYMBOL_GPL(synth_add);
void synth_remove(struct spk_synth *in_synth)
{
int i;
mutex_lock(&spk_mutex);
if (synth == in_synth)
synth_release();
for (i = 0; synths[i] != NULL; i++) {
if (in_synth == synths[i])
break;
}
for ( ; synths[i] != NULL; i++) /* compress table */
synths[i] = synths[i+1];
module_status = 0;
mutex_unlock(&spk_mutex);
}
EXPORT_SYMBOL_GPL(synth_remove);
short punc_masks[] = { 0, SOME, MOST, PUNC, PUNC|B_SYM };