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-rw-r--r--drivers/accessibility/speakup/speakup_decext.c240
1 files changed, 240 insertions, 0 deletions
diff --git a/drivers/accessibility/speakup/speakup_decext.c b/drivers/accessibility/speakup/speakup_decext.c
new file mode 100644
index 000000000..eaebf6230
--- /dev/null
+++ b/drivers/accessibility/speakup/speakup_decext.c
@@ -0,0 +1,240 @@
+// 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.
+ *
+ * specifically written as a driver for the speakup screenreview
+ * s not a general device driver.
+ */
+#include <linux/jiffies.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/kthread.h>
+
+#include "spk_priv.h"
+#include "speakup.h"
+
+#define DRV_VERSION "2.14"
+#define SYNTH_CLEAR 0x03
+#define PROCSPEECH 0x0b
+
+static volatile unsigned char last_char;
+
+static void read_buff_add(u_char ch)
+{
+ last_char = ch;
+}
+
+static inline bool synth_full(void)
+{
+ return last_char == 0x13;
+}
+
+static void do_catch_up(struct spk_synth *synth);
+static void synth_flush(struct spk_synth *synth);
+
+static int in_escape;
+
+static struct var_t vars[] = {
+ { CAPS_START, .u.s = {"[:dv ap 222]" } },
+ { CAPS_STOP, .u.s = {"[:dv ap 100]" } },
+ { RATE, .u.n = {"[:ra %d]", 7, 0, 9, 150, 25, NULL } },
+ { PITCH, .u.n = {"[:dv ap %d]", 100, 0, 100, 0, 0, NULL } },
+ { INFLECTION, .u.n = {"[:dv pr %d] ", 100, 0, 10000, 0, 0, NULL } },
+ { VOL, .u.n = {"[:dv gv %d]", 13, 0, 16, 0, 5, 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/decext.
+ */
+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 pitch_attribute =
+ __ATTR(pitch, 0644, spk_var_show, spk_var_store);
+static struct kobj_attribute inflection_attribute =
+ __ATTR(inflection, 0644, spk_var_show, spk_var_store);
+static struct kobj_attribute punct_attribute =
+ __ATTR(punct, 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,
+ &pitch_attribute.attr,
+ &inflection_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 struct spk_synth synth_decext = {
+ .name = "decext",
+ .version = DRV_VERSION,
+ .long_name = "Dectalk External",
+ .init = "[:pe -380]",
+ .procspeech = PROCSPEECH,
+ .clear = SYNTH_CLEAR,
+ .delay = 500,
+ .trigger = 50,
+ .jiffies = 50,
+ .full = 40000,
+ .flags = SF_DEC,
+ .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 = synth_flush,
+ .is_alive = spk_synth_is_alive_restart,
+ .synth_adjust = NULL,
+ .read_buff_add = read_buff_add,
+ .get_index = NULL,
+ .indexing = {
+ .command = NULL,
+ .lowindex = 0,
+ .highindex = 0,
+ .currindex = 0,
+ },
+ .attributes = {
+ .attrs = synth_attrs,
+ .name = "decext",
+ },
+};
+
+static void do_catch_up(struct spk_synth *synth)
+{
+ u_char ch;
+ static u_char last = '\0';
+ unsigned long flags;
+ unsigned long jiff_max;
+ struct var_t *jiffy_delta;
+ struct var_t *delay_time;
+ int jiffy_delta_val = 0;
+ int delay_time_val = 0;
+
+ jiffy_delta = spk_get_var(JIFFY);
+ delay_time = spk_get_var(DELAY);
+
+ 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);
+ 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);
+ delay_time_val = delay_time->u.n.value;
+ spin_unlock_irqrestore(&speakup_info.spinlock, flags);
+ if (ch == '\n')
+ ch = 0x0D;
+ if (synth_full() || !synth->io_ops->synth_out(synth, ch)) {
+ schedule_timeout(msecs_to_jiffies(delay_time_val));
+ continue;
+ }
+ set_current_state(TASK_RUNNING);
+ spin_lock_irqsave(&speakup_info.spinlock, flags);
+ synth_buffer_getc();
+ spin_unlock_irqrestore(&speakup_info.spinlock, flags);
+ if (ch == '[') {
+ in_escape = 1;
+ } else if (ch == ']') {
+ in_escape = 0;
+ } else if (ch <= SPACE) {
+ if (!in_escape && strchr(",.!?;:", last))
+ synth->io_ops->synth_out(synth, PROCSPEECH);
+ if (time_after_eq(jiffies, jiff_max)) {
+ if (!in_escape)
+ synth->io_ops->synth_out(synth,
+ PROCSPEECH);
+ spin_lock_irqsave(&speakup_info.spinlock,
+ flags);
+ jiffy_delta_val = jiffy_delta->u.n.value;
+ delay_time_val = delay_time->u.n.value;
+ spin_unlock_irqrestore(&speakup_info.spinlock,
+ flags);
+ schedule_timeout(msecs_to_jiffies
+ (delay_time_val));
+ jiff_max = jiffies + jiffy_delta_val;
+ }
+ }
+ last = ch;
+ }
+ if (!in_escape)
+ synth->io_ops->synth_out(synth, PROCSPEECH);
+}
+
+static void synth_flush(struct spk_synth *synth)
+{
+ in_escape = 0;
+ synth->io_ops->flush_buffer(synth);
+ synth->synth_immediate(synth, "\033P;10z\033\\");
+}
+
+module_param_named(ser, synth_decext.ser, int, 0444);
+module_param_named(dev, synth_decext.dev_name, charp, 0444);
+module_param_named(start, synth_decext.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_decext);
+
+MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
+MODULE_AUTHOR("David Borowski");
+MODULE_DESCRIPTION("Speakup support for DECtalk External synthesizers");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 09:22:58 +0000