/*
* originally written by: Kirk Reiser <kirk@braille.uwo.ca>
* this version considerably modified by David Borowski, david575@rogers.com
*
* Copyright (C) 1998-99 Kirk Reiser.
* Copyright (C) 2003 David Borowski.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* specificly written as a driver for the speakup screenreview
* s not a general device driver.
*/
#include <linux/unistd.h>
#include <linux/proc_fs.h>
#include <linux/jiffies.h>
#include <linux/spinlock.h>
#include <linux/sched.h>
#include <linux/timer.h>
#include <linux/kthread.h>
#include "speakup.h"
#include "spk_priv.h"
#include "serialio.h"
#define DRV_VERSION "2.20"
#define SYNTH_CLEAR 0x03
#define PROCSPEECH 0x0b
static int xoff;
static inline int synth_full(void)
{
return xoff;
}
static void do_catch_up(struct spk_synth *synth);
static void synth_flush(struct spk_synth *synth);
static void read_buff_add(u_char c);
static unsigned char get_index(void);
static int in_escape;
static int is_flushing;
static spinlock_t flush_lock;
static DECLARE_WAIT_QUEUE_HEAD(flush);
static struct var_t vars[] = {
{ CAPS_START, .u.s = {"[:dv ap 160] " } },
{ CAPS_STOP, .u.s = {"[:dv ap 100 ] " } },
{ RATE, .u.n = {"[:ra %d] ", 180, 75, 650, 0, 0, NULL } },
{ PITCH, .u.n = {"[:dv ap %d] ", 122, 50, 350, 0, 0, NULL } },
{ VOL, .u.n = {"[:dv g5 %d] ", 86, 60, 86, 0, 0, NULL } },
{ PUNCT, .u.n = {"[:pu %c] ", 0, 0, 2, 0, 0, "nsa" } },
{ VOICE, .u.n = {"[:n%c] ", 0, 0, 9, 0, 0, "phfdburwkv" } },
{ DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
V_LAST_VAR
};
/*
* These attributes will appear in /sys/accessibility/speakup/dectlk.
*/
static struct kobj_attribute caps_start_attribute =
__ATTR(caps_start, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute caps_stop_attribute =
__ATTR(caps_stop, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute pitch_attribute =
__ATTR(pitch, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute punct_attribute =
__ATTR(punct, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute rate_attribute =
__ATTR(rate, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute voice_attribute =
__ATTR(voice, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute vol_attribute =
__ATTR(vol, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute delay_time_attribute =
__ATTR(delay_time, ROOT_W, spk_var_show, spk_var_store);
static struct kobj_attribute direct_attribute =
__ATTR(direct, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute full_time_attribute =
__ATTR(full_time, ROOT_W, spk_var_show, spk_var_store);
static struct kobj_attribute jiffy_delta_attribute =
__ATTR(jiffy_delta, ROOT_W, spk_var_show, spk_var_store);
static struct kobj_attribute trigger_time_attribute =
__ATTR(trigger_time, ROOT_W, spk_var_show, spk_var_store);
/*
* Create a group of attributes so that we can create and destroy them all
* at once.
*/
static struct attribute *synth_attrs[] = {
&caps_start_attribute.attr,
&caps_stop_attribute.attr,
&pitch_attribute.attr,
&punct_attribute.attr,
&rate_attribute.attr,
&voice_attribute.attr,
&vol_attribute.attr,
&delay_time_attribute.attr,
&direct_attribute.attr,
&full_time_attribute.attr,
&jiffy_delta_attribute.attr,
&trigger_time_attribute.attr,
NULL, /* need to NULL terminate the list of attributes */
};
static int ap_defaults[] = {122, 89, 155, 110, 208, 240, 200, 106, 306};
static int g5_defaults[] = {86, 81, 86, 84, 81, 80, 83, 83, 73};
static struct spk_synth synth_dectlk = {
.name = "dectlk",
.version = DRV_VERSION,
.long_name = "Dectalk Express",
.init = "[:error sp :name paul :rate 180 :tsr off] ",
.procspeech = PROCSPEECH,
.clear = SYNTH_CLEAR,
.delay = 500,
.trigger = 50,
.jiffies = 50,
.full = 40000,
.startup = SYNTH_START,
.checkval = SYNTH_CHECK,
.vars = vars,
.default_pitch = ap_defaults,
.default_vol = g5_defaults,
.probe = serial_synth_probe,
.release = spk_serial_release,
.synth_immediate = spk_synth_immediate,
.catch_up = do_catch_up,
.flush = synth_flush,
.is_alive = spk_synth_is_alive_restart,
.synth_adjust = NULL,
.read_buff_add = read_buff_add,
.get_index = get_index,
.indexing = {
.command = "[:in re %d ] ",
.lowindex = 1,
.highindex = 8,
.currindex = 1,
},
.attributes = {
.attrs = synth_attrs,
.name = "dectlk",
},
};
static int is_indnum(u_char *ch)
{
if ((*ch >= '0') && (*ch <= '9')) {
*ch = *ch - '0';
return 1;
}
return 0;
}
static u_char lastind;
static unsigned char get_index(void)
{
u_char rv;
rv = lastind;
lastind = 0;
return rv;
}
static void read_buff_add(u_char c)
{
static int ind = -1;
if (c == 0x01) {
unsigned long flags;
spin_lock_irqsave(&flush_lock, flags);
is_flushing = 0;
wake_up_interruptible(&flush);
spin_unlock_irqrestore(&flush_lock, flags);
} else if (c == 0x13) {
xoff = 1;
} else if (c == 0x11) {
xoff = 0;
} else if (is_indnum(&c)) {
if (ind == -1)
ind = c;
else
ind = ind * 10 + c;
} else if ((c > 31) && (c < 127)) {
if (ind != -1)
lastind = (u_char)ind;
ind = -1;
}
}
static void do_catch_up(struct spk_synth *synth)
{
int synth_full_val = 0;
static u_char ch;
static u_char last = '\0';
unsigned long flags;
unsigned long jiff_max;
unsigned long timeout = msecs_to_jiffies(4000);
DEFINE_WAIT(wait);
struct var_t *jiffy_delta;
struct var_t *delay_time;
int jiffy_delta_val;
int delay_time_val;
jiffy_delta = get_var(JIFFY);
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()) {
/* if no ctl-a in 4, send data anyway */
spin_lock_irqsave(&flush_lock, flags);
while (is_flushing && timeout) {
prepare_to_wait(&flush, &wait, TASK_INTERRUPTIBLE);
spin_unlock_irqrestore(&flush_lock, flags);
timeout = schedule_timeout(timeout);
spin_lock_irqsave(&flush_lock, flags);
}
finish_wait(&flush, &wait);
is_flushing = 0;
spin_unlock_irqrestore(&flush_lock, flags);
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);
delay_time_val = delay_time->u.n.value;
synth_full_val = synth_full();
spk_unlock(flags);
if (ch == '\n')
ch = 0x0D;
if (synth_full_val || !spk_serial_out(ch)) {
schedule_timeout(msecs_to_jiffies(delay_time_val));
continue;
}
set_current_state(TASK_RUNNING);
spk_lock(flags);
synth_buffer_getc();
spk_unlock(flags);
if (ch == '[')
in_escape = 1;
else if (ch == ']')
in_escape = 0;
else if (ch <= SPACE) {
if (!in_escape && strchr(",.!?;:", last))
spk_serial_out(PROCSPEECH);
if (jiffies >= jiff_max) {
if (!in_escape)
spk_serial_out(PROCSPEECH);
spk_lock(flags);
jiffy_delta_val = jiffy_delta->u.n.value;
delay_time_val = delay_time->u.n.value;
spk_unlock(flags);
schedule_timeout(msecs_to_jiffies
(delay_time_val));
jiff_max = jiffies + jiffy_delta_val;
}
}
last = ch;
}
if (!in_escape)
spk_serial_out(PROCSPEECH);
}
static void synth_flush(struct spk_synth *synth)
{
if (in_escape) {
/* if in command output ']' so we don't get an error */
spk_serial_out(']');
}
in_escape = 0;
is_flushing = 1;
spk_serial_out(SYNTH_CLEAR);
}
module_param_named(ser, synth_dectlk.ser, int, S_IRUGO);
module_param_named(start, synth_dectlk.startup, short, S_IRUGO);
MODULE_PARM_DESC(ser, "Set the serial port for the synthesizer (0-based).");
MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
static int __init dectlk_init(void)
{
return synth_add(&synth_dectlk);
}
static void __exit dectlk_exit(void)
{
synth_remove(&synth_dectlk);
}
module_init(dectlk_init);
module_exit(dectlk_exit);
MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
MODULE_AUTHOR("David Borowski");
MODULE_DESCRIPTION("Speakup support for DECtalk Express synthesizers");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);