- 根目录:
- drivers
- staging
- speakup
- speakup_dtlk.c
/*
* 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
* package it's not a general device driver.
* This driver is for the RC Systems DoubleTalk PC internal synthesizer.
*/
#include <linux/jiffies.h>
#include <linux/sched.h>
#include <linux/timer.h>
#include <linux/kthread.h>
#include "spk_priv.h"
#include "serialio.h"
#include "speakup_dtlk.h" /* local header file for DoubleTalk values */
#include "speakup.h"
#define DRV_VERSION "2.10"
#define PROCSPEECH 0x00
static int synth_probe(struct spk_synth *synth);
static void dtlk_release(void);
static const char *synth_immediate(struct spk_synth *synth, const char *buf);
static void do_catch_up(struct spk_synth *synth);
static void synth_flush(struct spk_synth *synth);
static int synth_lpc;
static int port_forced;
static unsigned int synth_portlist[] = {
0x25e, 0x29e, 0x2de, 0x31e, 0x35e, 0x39e, 0
};
static u_char synth_status;
static struct var_t vars[] = {
{ CAPS_START, .u.s = {"\x01+35p" } },
{ CAPS_STOP, .u.s = {"\x01-35p" } },
{ RATE, .u.n = {"\x01%ds", 8, 0, 9, 0, 0, NULL } },
{ PITCH, .u.n = {"\x01%dp", 50, 0, 99, 0, 0, NULL } },
{ VOL, .u.n = {"\x01%dv", 5, 0, 9, 0, 0, NULL } },
{ TONE, .u.n = {"\x01%dx", 1, 0, 2, 0, 0, NULL } },
{ PUNCT, .u.n = {"\x01%db", 7, 0, 15, 0, 0, NULL } },
{ VOICE, .u.n = {"\x01%do", 0, 0, 7, 0, 0, NULL } },
{ FREQUENCY, .u.n = {"\x01%df", 5, 0, 9, 0, 0, NULL } },
{ DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
V_LAST_VAR
};
/*
* These attributes will appear in /sys/accessibility/speakup/dtlk.
*/
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 freq_attribute =
__ATTR(freq, 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 tone_attribute =
__ATTR(tone, 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,
&freq_attribute.attr,
&pitch_attribute.attr,
&punct_attribute.attr,
&rate_attribute.attr,
&tone_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 struct spk_synth synth_dtlk = {
.name = "dtlk",
.version = DRV_VERSION,
.long_name = "DoubleTalk PC",
.init = "\x01@\x01\x31y",
.procspeech = PROCSPEECH,
.clear = SYNTH_CLEAR,
.delay = 500,
.trigger = 30,
.jiffies = 50,
.full = 1000,
.startup = SYNTH_START,
.checkval = SYNTH_CHECK,
.vars = vars,
.probe = synth_probe,
.release = dtlk_release,
.synth_immediate = synth_immediate,
.catch_up = do_catch_up,
.flush = synth_flush,
.is_alive = spk_synth_is_alive_nop,
.synth_adjust = NULL,
.read_buff_add = NULL,
.get_index = spk_serial_in_nowait,
.indexing = {
.command = "\x01%di",
.lowindex = 1,
.highindex = 5,
.currindex = 1,
},
.attributes = {
.attrs = synth_attrs,
.name = "dtlk",
},
};
static inline bool synth_readable(void)
{
synth_status = inb_p(speakup_info.port_tts + UART_RX);
return (synth_status & TTS_READABLE) != 0;
}
static inline bool synth_writable(void)
{
synth_status = inb_p(speakup_info.port_tts + UART_RX);
return (synth_status & TTS_WRITABLE) != 0;
}
static inline bool synth_full(void)
{
synth_status = inb_p(speakup_info.port_tts + UART_RX);
return (synth_status & TTS_ALMOST_FULL) != 0;
}
static void spk_out(const char ch)
{
int timeout = SPK_XMITR_TIMEOUT;
while (!synth_writable()) {
if (!--timeout)
break;
udelay(1);
}
outb_p(ch, speakup_info.port_tts);
timeout = SPK_XMITR_TIMEOUT;
while (synth_writable()) {
if (!--timeout)
break;
udelay(1);
}
}
static void do_catch_up(struct spk_synth *synth)
{
u_char ch;
unsigned long flags;
unsigned long jiff_max;
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()) {
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;
}
set_current_state(TASK_INTERRUPTIBLE);
delay_time_val = delay_time->u.n.value;
spk_unlock(flags);
if (synth_full()) {
schedule_timeout(msecs_to_jiffies(delay_time_val));
continue;
}
set_current_state(TASK_RUNNING);
spk_lock(flags);
ch = synth_buffer_getc();
spk_unlock(flags);
if (ch == '\n')
ch = PROCSPEECH;
spk_out(ch);
if ((jiffies >= jiff_max) && (ch == SPACE)) {
spk_out(PROCSPEECH);
spk_lock(flags);
delay_time_val = delay_time->u.n.value;
jiffy_delta_val = jiffy_delta->u.n.value;
spk_unlock(flags);
schedule_timeout(msecs_to_jiffies(delay_time_val));
jiff_max = jiffies + jiffy_delta_val;
}
}
spk_out(PROCSPEECH);
}
static const char *synth_immediate(struct spk_synth *synth, const char *buf)
{
u_char ch;
while ((ch = (u_char)*buf)) {
if (synth_full())
return buf;
if (ch == '\n')
ch = PROCSPEECH;
spk_out(ch);
buf++;
}
return 0;
}
static void synth_flush(struct spk_synth *synth)
{
outb_p(SYNTH_CLEAR, speakup_info.port_tts);
while (synth_writable())
cpu_relax();
}
static char synth_read_tts(void)
{
u_char ch;
while (!synth_readable())
cpu_relax();
ch = synth_status & 0x7f;
outb_p(ch, speakup_info.port_tts);
while (synth_readable())
cpu_relax();
return (char) ch;
}
/* interrogate the DoubleTalk PC and return its settings */
static struct synth_settings *synth_interrogate(struct spk_synth *synth)
{
u_char *t;
static char buf[sizeof(struct synth_settings) + 1];
int total, i;
static struct synth_settings status;
synth_immediate(synth, "\x18\x01?");
for (total = 0, i = 0; i < 50; i++) {
buf[total] = synth_read_tts();
if (total > 2 && buf[total] == 0x7f)
break;
if (total < sizeof(struct synth_settings))
total++;
}
t = buf;
/* serial number is little endian */
status.serial_number = t[0] + t[1]*256;
t += 2;
for (i = 0; *t != '\r'; t++) {
status.rom_version[i] = *t;
if (i < sizeof(status.rom_version)-1)
i++;
}
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++;
return &status;
}
static int synth_probe(struct spk_synth *synth)
{
unsigned int port_val = 0;
int i = 0;
struct synth_settings *sp;
pr_info("Probing for DoubleTalk.\n");
if (port_forced) {
speakup_info.port_tts = port_forced;
pr_info("probe forced to %x by kernel command line\n",
speakup_info.port_tts);
if ((port_forced & 0xf) != 0xf)
pr_info("warning: port base should probably end with f\n");
if (synth_request_region(speakup_info.port_tts-1,
SYNTH_IO_EXTENT)) {
pr_warn("sorry, port already reserved\n");
return -EBUSY;
}
port_val = inw(speakup_info.port_tts-1);
synth_lpc = speakup_info.port_tts-1;
} else {
for (i = 0; synth_portlist[i]; i++) {
if (synth_request_region(synth_portlist[i],
SYNTH_IO_EXTENT))
continue;
port_val = inw(synth_portlist[i]) & 0xfbff;
if (port_val == 0x107f) {
synth_lpc = synth_portlist[i];
speakup_info.port_tts = synth_lpc+1;
break;
}
synth_release_region(synth_portlist[i],
SYNTH_IO_EXTENT);
}
}
port_val &= 0xfbff;
if (port_val != 0x107f) {
pr_info("DoubleTalk PC: not found\n");
synth_release_region(synth_lpc, SYNTH_IO_EXTENT);
return -ENODEV;
}
while (inw_p(synth_lpc) != 0x147f)
cpu_relax(); /* wait until it's ready */
sp = synth_interrogate(synth);
pr_info("%s: %03x-%03x, ROM ver %s, s/n %u, driver: %s\n",
synth->long_name, synth_lpc, synth_lpc+SYNTH_IO_EXTENT - 1,
sp->rom_version, sp->serial_number, synth->version);
synth->alive = 1;
return 0;
}
static void dtlk_release(void)
{
if (speakup_info.port_tts)
synth_release_region(speakup_info.port_tts-1, SYNTH_IO_EXTENT);
speakup_info.port_tts = 0;
}
module_param_named(port, port_forced, int, S_IRUGO);
module_param_named(start, synth_dtlk.startup, short, S_IRUGO);
MODULE_PARM_DESC(port, "Set the port for the synthesizer (override probing).");
MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
static int __init dtlk_init(void)
{
return synth_add(&synth_dtlk);
}
static void __exit dtlk_exit(void)
{
synth_remove(&synth_dtlk);
}
module_init(dtlk_init);
module_exit(dtlk_exit);
MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
MODULE_AUTHOR("David Borowski");
MODULE_DESCRIPTION("Speakup support for DoubleTalk PC synthesizers");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);