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// SPDX-License-Identifier: GPL-2.0+
/*
* 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 code is specificly written as a driver for the speakup screenreview
* package and is not a general device driver.
*/
#include <linux/jiffies.h>
#include <linux/sched.h>
#include <linux/timer.h>
#include <linux/kthread.h>
#include <linux/serial_reg.h> /* for UART_MCR* constants */
#include "spk_priv.h"
#include "speakup.h"
#define DRV_VERSION "2.21"
#define SYNTH_CLEAR 0x18
#define PROCSPEECH '\r'
static void do_catch_up(struct spk_synth *synth);
static struct var_t vars[] = {
{ CAPS_START, .u.s = {"cap, " } },
{ CAPS_STOP, .u.s = {"" } },
{ RATE, .u.n = {"@W%d", 6, 1, 9, 0, 0, NULL } },
{ PITCH, .u.n = {"@F%x", 10, 0, 15, 0, 0, NULL } },
{ VOL, .u.n = {"@A%x", 10, 0, 15, 0, 0, NULL } },
{ VOICE, .u.n = {"@V%d", 1, 1, 6, 0, 0, NULL } },
{ LANG, .u.n = {"@=%d,", 1, 1, 4, 0, 0, NULL } },
{ DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
V_LAST_VAR
};
/*
* These attributes will appear in /sys/accessibility/speakup/apollo.
*/
static struct kobj_attribute caps_start_attribute =
__ATTR(caps_start, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute caps_stop_attribute =
__ATTR(caps_stop, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute lang_attribute =
__ATTR(lang, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute pitch_attribute =
__ATTR(pitch, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute rate_attribute =
__ATTR(rate, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute voice_attribute =
__ATTR(voice, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute vol_attribute =
__ATTR(vol, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute delay_time_attribute =
__ATTR(delay_time, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute direct_attribute =
__ATTR(direct, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute full_time_attribute =
__ATTR(full_time, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute jiffy_delta_attribute =
__ATTR(jiffy_delta, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute trigger_time_attribute =
__ATTR(trigger_time, 0644, 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,
&lang_attribute.attr,
&pitch_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 struct spk_synth synth_apollo = {
.name = "apollo",
.version = DRV_VERSION,
.long_name = "Apollo",
.init = "@R3@D0@K1\r",
.procspeech = PROCSPEECH,
.clear = SYNTH_CLEAR,
.delay = 500,
.trigger = 50,
.jiffies = 50,
.full = 40000,
.dev_name = SYNTH_DEFAULT_DEV,
.startup = SYNTH_START,
.checkval = SYNTH_CHECK,
.vars = vars,
.io_ops = &spk_ttyio_ops,
.probe = spk_ttyio_synth_probe,
.release = spk_ttyio_release,
.synth_immediate = spk_ttyio_synth_immediate,
.catch_up = do_catch_up,
.flush = spk_synth_flush,
.is_alive = spk_synth_is_alive_restart,
.synth_adjust = NULL,
.read_buff_add = NULL,
.get_index = NULL,
.indexing = {
.command = NULL,
.lowindex = 0,
.highindex = 0,
.currindex = 0,
},
.attributes = {
.attrs = synth_attrs,
.name = "apollo",
},
};
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;
struct var_t *full_time;
int full_time_val = 0;
int delay_time_val = 0;
int jiffy_delta_val = 0;
jiffy_delta = spk_get_var(JIFFY);
delay_time = spk_get_var(DELAY);
full_time = spk_get_var(FULL);
spin_lock_irqsave(&speakup_info.spinlock, flags);
jiffy_delta_val = jiffy_delta->u.n.value;
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
jiff_max = jiffies + jiffy_delta_val;
while (!kthread_should_stop()) {
spin_lock_irqsave(&speakup_info.spinlock, flags);
jiffy_delta_val = jiffy_delta->u.n.value;
full_time_val = full_time->u.n.value;
delay_time_val = delay_time->u.n.value;
if (speakup_info.flushing) {
speakup_info.flushing = 0;
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
synth->flush(synth);
continue;
}
synth_buffer_skip_nonlatin1();
if (synth_buffer_empty()) {
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
break;
}
ch = synth_buffer_peek();
set_current_state(TASK_INTERRUPTIBLE);
full_time_val = full_time->u.n.value;
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
if (!synth->io_ops->synth_out(synth, ch)) {
synth->io_ops->tiocmset(0, UART_MCR_RTS);
synth->io_ops->tiocmset(UART_MCR_RTS, 0);
schedule_timeout(msecs_to_jiffies(full_time_val));
continue;
}
if (time_after_eq(jiffies, jiff_max) && (ch == SPACE)) {
spin_lock_irqsave(&speakup_info.spinlock, flags);
jiffy_delta_val = jiffy_delta->u.n.value;
full_time_val = full_time->u.n.value;
delay_time_val = delay_time->u.n.value;
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
if (synth->io_ops->synth_out(synth, 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);
spin_lock_irqsave(&speakup_info.spinlock, flags);
synth_buffer_getc();
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
}
synth->io_ops->synth_out(synth, PROCSPEECH);
}
module_param_named(ser, synth_apollo.ser, int, 0444);
module_param_named(dev, synth_apollo.dev_name, charp, 0444);
module_param_named(start, synth_apollo.startup, short, 0444);
MODULE_PARM_DESC(ser, "Set the serial port for the synthesizer (0-based).");
MODULE_PARM_DESC(dev, "Set the device e.g. ttyUSB0, for the synthesizer.");
MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
module_spk_synth(synth_apollo);
MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
MODULE_AUTHOR("David Borowski");
MODULE_DESCRIPTION("Speakup support for Apollo II synthesizer");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
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