1/* 2 * originally written by: Kirk Reiser <kirk@braille.uwo.ca> 3* this version considerably modified by David Borowski, david575@rogers.com 4 * 5 * Copyright (C) 1998-99 Kirk Reiser. 6 * Copyright (C) 2003 David Borowski. 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 * specificly written as a driver for the speakup screenreview 23 * s not a general device driver. 24 */ 25#include <linux/jiffies.h> 26#include <linux/sched.h> 27#include <linux/timer.h> 28#include <linux/kthread.h> 29 30#include "spk_priv.h" 31#include "serialio.h" 32#include "speakup.h" 33 34#define DRV_VERSION "2.14" 35#define SYNTH_CLEAR 0x03 36#define PROCSPEECH 0x0b 37static unsigned char last_char; 38 39static inline u_char get_last_char(void) 40{ 41 u_char avail = inb_p(speakup_info.port_tts + UART_LSR) & UART_LSR_DR; 42 if (avail) 43 last_char = inb_p(speakup_info.port_tts + UART_RX); 44 return last_char; 45} 46 47static inline bool synth_full(void) 48{ 49 return get_last_char() == 0x13; 50} 51 52static void do_catch_up(struct spk_synth *synth); 53static void synth_flush(struct spk_synth *synth); 54 55static int in_escape; 56 57static struct var_t vars[] = { 58 { CAPS_START, .u.s = {"[:dv ap 222]" } }, 59 { CAPS_STOP, .u.s = {"[:dv ap 100]" } }, 60 { RATE, .u.n = {"[:ra %d]", 7, 0, 9, 150, 25, NULL } }, 61 { PITCH, .u.n = {"[:dv ap %d]", 100, 0, 100, 0, 0, NULL } }, 62 { VOL, .u.n = {"[:dv gv %d]", 13, 0, 16, 0, 5, NULL } }, 63 { PUNCT, .u.n = {"[:pu %c]", 0, 0, 2, 0, 0, "nsa" } }, 64 { VOICE, .u.n = {"[:n%c]", 0, 0, 9, 0, 0, "phfdburwkv" } }, 65 { DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } }, 66 V_LAST_VAR 67}; 68 69/* 70 * These attributes will appear in /sys/accessibility/speakup/decext. 71 */ 72static struct kobj_attribute caps_start_attribute = 73 __ATTR(caps_start, USER_RW, spk_var_show, spk_var_store); 74static struct kobj_attribute caps_stop_attribute = 75 __ATTR(caps_stop, USER_RW, spk_var_show, spk_var_store); 76static struct kobj_attribute pitch_attribute = 77 __ATTR(pitch, USER_RW, spk_var_show, spk_var_store); 78static struct kobj_attribute punct_attribute = 79 __ATTR(punct, USER_RW, spk_var_show, spk_var_store); 80static struct kobj_attribute rate_attribute = 81 __ATTR(rate, USER_RW, spk_var_show, spk_var_store); 82static struct kobj_attribute voice_attribute = 83 __ATTR(voice, USER_RW, spk_var_show, spk_var_store); 84static struct kobj_attribute vol_attribute = 85 __ATTR(vol, USER_RW, spk_var_show, spk_var_store); 86 87static struct kobj_attribute delay_time_attribute = 88 __ATTR(delay_time, ROOT_W, spk_var_show, spk_var_store); 89static struct kobj_attribute direct_attribute = 90 __ATTR(direct, USER_RW, spk_var_show, spk_var_store); 91static struct kobj_attribute full_time_attribute = 92 __ATTR(full_time, ROOT_W, spk_var_show, spk_var_store); 93static struct kobj_attribute jiffy_delta_attribute = 94 __ATTR(jiffy_delta, ROOT_W, spk_var_show, spk_var_store); 95static struct kobj_attribute trigger_time_attribute = 96 __ATTR(trigger_time, ROOT_W, spk_var_show, spk_var_store); 97 98/* 99 * Create a group of attributes so that we can create and destroy them all 100 * at once. 101 */ 102static struct attribute *synth_attrs[] = { 103 &caps_start_attribute.attr, 104 &caps_stop_attribute.attr, 105 &pitch_attribute.attr, 106 &punct_attribute.attr, 107 &rate_attribute.attr, 108 &voice_attribute.attr, 109 &vol_attribute.attr, 110 &delay_time_attribute.attr, 111 &direct_attribute.attr, 112 &full_time_attribute.attr, 113 &jiffy_delta_attribute.attr, 114 &trigger_time_attribute.attr, 115 NULL, /* need to NULL terminate the list of attributes */ 116}; 117 118static struct spk_synth synth_decext = { 119 .name = "decext", 120 .version = DRV_VERSION, 121 .long_name = "Dectalk External", 122 .init = "[:pe -380]", 123 .procspeech = PROCSPEECH, 124 .clear = SYNTH_CLEAR, 125 .delay = 500, 126 .trigger = 50, 127 .jiffies = 50, 128 .full = 40000, 129 .flags = SF_DEC, 130 .startup = SYNTH_START, 131 .checkval = SYNTH_CHECK, 132 .vars = vars, 133 .probe = serial_synth_probe, 134 .release = spk_serial_release, 135 .synth_immediate = spk_synth_immediate, 136 .catch_up = do_catch_up, 137 .flush = synth_flush, 138 .is_alive = spk_synth_is_alive_restart, 139 .synth_adjust = NULL, 140 .read_buff_add = NULL, 141 .get_index = NULL, 142 .indexing = { 143 .command = NULL, 144 .lowindex = 0, 145 .highindex = 0, 146 .currindex = 0, 147 }, 148 .attributes = { 149 .attrs = synth_attrs, 150 .name = "decext", 151 }, 152}; 153 154static void do_catch_up(struct spk_synth *synth) 155{ 156 u_char ch; 157 static u_char last = '\0'; 158 unsigned long flags; 159 unsigned long jiff_max; 160 struct var_t *jiffy_delta; 161 struct var_t *delay_time; 162 int jiffy_delta_val = 0; 163 int delay_time_val = 0; 164 165 jiffy_delta = get_var(JIFFY); 166 delay_time = get_var(DELAY); 167 168 spk_lock(flags); 169 jiffy_delta_val = jiffy_delta->u.n.value; 170 spk_unlock(flags); 171 jiff_max = jiffies + jiffy_delta_val; 172 173 while (!kthread_should_stop()) { 174 spk_lock(flags); 175 if (speakup_info.flushing) { 176 speakup_info.flushing = 0; 177 spk_unlock(flags); 178 synth->flush(synth); 179 continue; 180 } 181 if (synth_buffer_empty()) { 182 spk_unlock(flags); 183 break; 184 } 185 ch = synth_buffer_peek(); 186 set_current_state(TASK_INTERRUPTIBLE); 187 delay_time_val = delay_time->u.n.value; 188 spk_unlock(flags); 189 if (ch == '\n') 190 ch = 0x0D; 191 if (synth_full() || !spk_serial_out(ch)) { 192 schedule_timeout(msecs_to_jiffies(delay_time_val)); 193 continue; 194 } 195 set_current_state(TASK_RUNNING); 196 spk_lock(flags); 197 synth_buffer_getc(); 198 spk_unlock(flags); 199 if (ch == '[') 200 in_escape = 1; 201 else if (ch == ']') 202 in_escape = 0; 203 else if (ch <= SPACE) { 204 if (!in_escape && strchr(",.!?;:", last)) 205 spk_serial_out(PROCSPEECH); 206 if (jiffies >= jiff_max) { 207 if (!in_escape) 208 spk_serial_out(PROCSPEECH); 209 spk_lock(flags); 210 jiffy_delta_val = jiffy_delta->u.n.value; 211 delay_time_val = delay_time->u.n.value; 212 spk_unlock(flags); 213 schedule_timeout(msecs_to_jiffies 214 (delay_time_val)); 215 jiff_max = jiffies + jiffy_delta_val; 216 } 217 } 218 last = ch; 219 } 220 if (!in_escape) 221 spk_serial_out(PROCSPEECH); 222} 223 224static void synth_flush(struct spk_synth *synth) 225{ 226 in_escape = 0; 227 spk_synth_immediate(synth, "\033P;10z\033\\"); 228} 229 230module_param_named(ser, synth_decext.ser, int, S_IRUGO); 231module_param_named(start, synth_decext.startup, short, S_IRUGO); 232 233MODULE_PARM_DESC(ser, "Set the serial port for the synthesizer (0-based)."); 234MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded."); 235 236static int __init decext_init(void) 237{ 238 return synth_add(&synth_decext); 239} 240 241static void __exit decext_exit(void) 242{ 243 synth_remove(&synth_decext); 244} 245 246module_init(decext_init); 247module_exit(decext_exit); 248MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>"); 249MODULE_AUTHOR("David Borowski"); 250MODULE_DESCRIPTION("Speakup support for DECtalk External synthesizers"); 251MODULE_LICENSE("GPL"); 252MODULE_VERSION(DRV_VERSION); 253 254