1 files changed, 175 insertions, 0 deletions
diff --git a/drivers/accessibility/speakup/speakup_ltlk.c b/drivers/accessibility/speakup/speakup_ltlk.c
new file mode 100644
index 000000000..f885cfaa2
--- /dev/null
+++ b/drivers/accessibility/speakup/speakup_ltlk.c
@@ -0,0 +1,175 @@
+// 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 "speakup.h"
+#include "spk_priv.h"
+#include "speakup_dtlk.h" /* local header file for LiteTalk values */
+
+#define DRV_VERSION "2.11"
+#define PROCSPEECH 0x0d
+
+static int synth_probe(struct spk_synth *synth);
+
+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/ltlk.
+ */
+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 freq_attribute =
+	__ATTR(freq, 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 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 tone_attribute =
+	__ATTR(tone, 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,
+	&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_ltlk = {
+	.name = "ltlk",
+	.version = DRV_VERSION,
+	.long_name = "LiteTalk",
+	.init = "\01@\x01\x31y\n\0",
+	.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 = synth_probe,
+	.release = spk_ttyio_release,
+	.synth_immediate = spk_ttyio_synth_immediate,
+	.catch_up = spk_do_catch_up,
+	.flush = spk_synth_flush,
+	.is_alive = spk_synth_is_alive_restart,
+	.synth_adjust = NULL,
+	.read_buff_add = NULL,
+	.get_index = spk_synth_get_index,
+	.indexing = {
+		.command = "\x01%di",
+		.lowindex = 1,
+		.highindex = 5,
+		.currindex = 1,
+	},
+	.attributes = {
+		.attrs = synth_attrs,
+		.name = "ltlk",
+	},
+};
+
+/* interrogate the LiteTalk and print its settings */
+static void synth_interrogate(struct spk_synth *synth)
+{
+	unsigned char *t, i;
+	unsigned char buf[50], rom_v[20];
+
+	synth->synth_immediate(synth, "\x18\x01?");
+	for (i = 0; i < 50; i++) {
+		buf[i] = synth->io_ops->synth_in(synth);
+		if (i > 2 && buf[i] == 0x7f)
+			break;
+	}
+	t = buf + 2;
+	for (i = 0; *t != '\r'; t++) {
+		rom_v[i] = *t;
+		if (++i >= 19)
+			break;
+	}
+	rom_v[i] = 0;
+	pr_info("%s: ROM version: %s\n", synth->long_name, rom_v);
+}
+
+static int synth_probe(struct spk_synth *synth)
+{
+	int failed = 0;
+
+	failed = spk_ttyio_synth_probe(synth);
+	if (failed == 0)
+		synth_interrogate(synth);
+	synth->alive = !failed;
+	return failed;
+}
+
+module_param_named(ser, synth_ltlk.ser, int, 0444);
+module_param_named(dev, synth_ltlk.dev_name, charp, 0444);
+module_param_named(start, synth_ltlk.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_ltlk);
+
+MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
+MODULE_AUTHOR("David Borowski");
+MODULE_DESCRIPTION("Speakup support for DoubleTalk LT/LiteTalk synthesizers");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+