linux/drivers/staging/speakup/speakup_ltlk.c
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   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * originally written by: Kirk Reiser <kirk@braille.uwo.ca>
   4 * this version considerably modified by David Borowski, david575@rogers.com
   5 *
   6 * Copyright (C) 1998-99  Kirk Reiser.
   7 * Copyright (C) 2003 David Borowski.
   8 *
   9 * specificly written as a driver for the speakup screenreview
  10 * s not a general device driver.
  11 */
  12#include "speakup.h"
  13#include "spk_priv.h"
  14#include "speakup_dtlk.h" /* local header file for LiteTalk values */
  15
  16#define DRV_VERSION "2.11"
  17#define PROCSPEECH 0x0d
  18
  19static int synth_probe(struct spk_synth *synth);
  20
  21static struct var_t vars[] = {
  22        { CAPS_START, .u.s = {"\x01+35p" } },
  23        { CAPS_STOP, .u.s = {"\x01-35p" } },
  24        { RATE, .u.n = {"\x01%ds", 8, 0, 9, 0, 0, NULL } },
  25        { PITCH, .u.n = {"\x01%dp", 50, 0, 99, 0, 0, NULL } },
  26        { VOL, .u.n = {"\x01%dv", 5, 0, 9, 0, 0, NULL } },
  27        { TONE, .u.n = {"\x01%dx", 1, 0, 2, 0, 0, NULL } },
  28        { PUNCT, .u.n = {"\x01%db", 7, 0, 15, 0, 0, NULL } },
  29        { VOICE, .u.n = {"\x01%do", 0, 0, 7, 0, 0, NULL } },
  30        { FREQUENCY, .u.n = {"\x01%df", 5, 0, 9, 0, 0, NULL } },
  31        { DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
  32        V_LAST_VAR
  33};
  34
  35/*
  36 * These attributes will appear in /sys/accessibility/speakup/ltlk.
  37 */
  38static struct kobj_attribute caps_start_attribute =
  39        __ATTR(caps_start, 0644, spk_var_show, spk_var_store);
  40static struct kobj_attribute caps_stop_attribute =
  41        __ATTR(caps_stop, 0644, spk_var_show, spk_var_store);
  42static struct kobj_attribute freq_attribute =
  43        __ATTR(freq, 0644, spk_var_show, spk_var_store);
  44static struct kobj_attribute pitch_attribute =
  45        __ATTR(pitch, 0644, spk_var_show, spk_var_store);
  46static struct kobj_attribute punct_attribute =
  47        __ATTR(punct, 0644, spk_var_show, spk_var_store);
  48static struct kobj_attribute rate_attribute =
  49        __ATTR(rate, 0644, spk_var_show, spk_var_store);
  50static struct kobj_attribute tone_attribute =
  51        __ATTR(tone, 0644, spk_var_show, spk_var_store);
  52static struct kobj_attribute voice_attribute =
  53        __ATTR(voice, 0644, spk_var_show, spk_var_store);
  54static struct kobj_attribute vol_attribute =
  55        __ATTR(vol, 0644, spk_var_show, spk_var_store);
  56
  57static struct kobj_attribute delay_time_attribute =
  58        __ATTR(delay_time, 0644, spk_var_show, spk_var_store);
  59static struct kobj_attribute direct_attribute =
  60        __ATTR(direct, 0644, spk_var_show, spk_var_store);
  61static struct kobj_attribute full_time_attribute =
  62        __ATTR(full_time, 0644, spk_var_show, spk_var_store);
  63static struct kobj_attribute jiffy_delta_attribute =
  64        __ATTR(jiffy_delta, 0644, spk_var_show, spk_var_store);
  65static struct kobj_attribute trigger_time_attribute =
  66        __ATTR(trigger_time, 0644, spk_var_show, spk_var_store);
  67
  68/*
  69 * Create a group of attributes so that we can create and destroy them all
  70 * at once.
  71 */
  72static struct attribute *synth_attrs[] = {
  73        &caps_start_attribute.attr,
  74        &caps_stop_attribute.attr,
  75        &freq_attribute.attr,
  76        &pitch_attribute.attr,
  77        &punct_attribute.attr,
  78        &rate_attribute.attr,
  79        &tone_attribute.attr,
  80        &voice_attribute.attr,
  81        &vol_attribute.attr,
  82        &delay_time_attribute.attr,
  83        &direct_attribute.attr,
  84        &full_time_attribute.attr,
  85        &jiffy_delta_attribute.attr,
  86        &trigger_time_attribute.attr,
  87        NULL,   /* need to NULL terminate the list of attributes */
  88};
  89
  90static struct spk_synth synth_ltlk = {
  91        .name = "ltlk",
  92        .version = DRV_VERSION,
  93        .long_name = "LiteTalk",
  94        .init = "\01@\x01\x31y\n\0",
  95        .procspeech = PROCSPEECH,
  96        .clear = SYNTH_CLEAR,
  97        .delay = 500,
  98        .trigger = 50,
  99        .jiffies = 50,
 100        .full = 40000,
 101        .dev_name = SYNTH_DEFAULT_DEV,
 102        .startup = SYNTH_START,
 103        .checkval = SYNTH_CHECK,
 104        .vars = vars,
 105        .io_ops = &spk_ttyio_ops,
 106        .probe = synth_probe,
 107        .release = spk_ttyio_release,
 108        .synth_immediate = spk_ttyio_synth_immediate,
 109        .catch_up = spk_do_catch_up,
 110        .flush = spk_synth_flush,
 111        .is_alive = spk_synth_is_alive_restart,
 112        .synth_adjust = NULL,
 113        .read_buff_add = NULL,
 114        .get_index = spk_synth_get_index,
 115        .indexing = {
 116                .command = "\x01%di",
 117                .lowindex = 1,
 118                .highindex = 5,
 119                .currindex = 1,
 120        },
 121        .attributes = {
 122                .attrs = synth_attrs,
 123                .name = "ltlk",
 124        },
 125};
 126
 127/* interrogate the LiteTalk and print its settings */
 128static void synth_interrogate(struct spk_synth *synth)
 129{
 130        unsigned char *t, i;
 131        unsigned char buf[50], rom_v[20];
 132
 133        synth->synth_immediate(synth, "\x18\x01?");
 134        for (i = 0; i < 50; i++) {
 135                buf[i] = synth->io_ops->synth_in();
 136                if (i > 2 && buf[i] == 0x7f)
 137                        break;
 138        }
 139        t = buf + 2;
 140        for (i = 0; *t != '\r'; t++) {
 141                rom_v[i] = *t;
 142                if (++i >= 19)
 143                        break;
 144        }
 145        rom_v[i] = 0;
 146        pr_info("%s: ROM version: %s\n", synth->long_name, rom_v);
 147}
 148
 149static int synth_probe(struct spk_synth *synth)
 150{
 151        int failed = 0;
 152
 153        failed = spk_ttyio_synth_probe(synth);
 154        if (failed == 0)
 155                synth_interrogate(synth);
 156        synth->alive = !failed;
 157        return failed;
 158}
 159
 160module_param_named(ser, synth_ltlk.ser, int, 0444);
 161module_param_named(dev, synth_ltlk.dev_name, charp, 0444);
 162module_param_named(start, synth_ltlk.startup, short, 0444);
 163
 164MODULE_PARM_DESC(ser, "Set the serial port for the synthesizer (0-based).");
 165MODULE_PARM_DESC(dev, "Set the device e.g. ttyUSB0, for the synthesizer.");
 166MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
 167
 168module_spk_synth(synth_ltlk);
 169
 170MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
 171MODULE_AUTHOR("David Borowski");
 172MODULE_DESCRIPTION("Speakup support for DoubleTalk LT/LiteTalk synthesizers");
 173MODULE_LICENSE("GPL");
 174MODULE_VERSION(DRV_VERSION);
 175
 176