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 43 if (avail) 44 last_char = inb_p(speakup_info.port_tts + UART_RX); 45 return last_char; 46} 47 48static inline bool synth_full(void) 49{ 50 return get_last_char() == 0x13; 51} 52 53static void do_catch_up(struct spk_synth *synth); 54static void synth_flush(struct spk_synth *synth); 55 56static int in_escape; 57 58static struct var_t vars[] = { 59 { CAPS_START, .u.s = {"[:dv ap 222]" } }, 60 { CAPS_STOP, .u.s = {"[:dv ap 100]" } }, 61 { RATE, .u.n = {"[:ra %d]", 7, 0, 9, 150, 25, NULL } }, 62 { PITCH, .u.n = {"[:dv ap %d]", 100, 0, 100, 0, 0, NULL } }, 63 { VOL, .u.n = {"[:dv gv %d]", 13, 0, 16, 0, 5, NULL } }, 64 { PUNCT, .u.n = {"[:pu %c]", 0, 0, 2, 0, 0, "nsa" } }, 65 { VOICE, .u.n = {"[:n%c]", 0, 0, 9, 0, 0, "phfdburwkv" } }, 66 { DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } }, 67 V_LAST_VAR 68}; 69 70/* 71 * These attributes will appear in /sys/accessibility/speakup/decext. 72 */ 73static struct kobj_attribute caps_start_attribute = 74 __ATTR(caps_start, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store); 75static struct kobj_attribute caps_stop_attribute = 76 __ATTR(caps_stop, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store); 77static struct kobj_attribute pitch_attribute = 78 __ATTR(pitch, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store); 79static struct kobj_attribute punct_attribute = 80 __ATTR(punct, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store); 81static struct kobj_attribute rate_attribute = 82 __ATTR(rate, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store); 83static struct kobj_attribute voice_attribute = 84 __ATTR(voice, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store); 85static struct kobj_attribute vol_attribute = 86 __ATTR(vol, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store); 87 88static struct kobj_attribute delay_time_attribute = 89 __ATTR(delay_time, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store); 90static struct kobj_attribute direct_attribute = 91 __ATTR(direct, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store); 92static struct kobj_attribute full_time_attribute = 93 __ATTR(full_time, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store); 94static struct kobj_attribute jiffy_delta_attribute = 95 __ATTR(jiffy_delta, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store); 96static struct kobj_attribute trigger_time_attribute = 97 __ATTR(trigger_time, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store); 98 99/* 100 * Create a group of attributes so that we can create and destroy them all 101 * at once. 102 */ 103static struct attribute *synth_attrs[] = { 104 &caps_start_attribute.attr, 105 &caps_stop_attribute.attr, 106 &pitch_attribute.attr, 107 &punct_attribute.attr, 108 &rate_attribute.attr, 109 &voice_attribute.attr, 110 &vol_attribute.attr, 111 &delay_time_attribute.attr, 112 &direct_attribute.attr, 113 &full_time_attribute.attr, 114 &jiffy_delta_attribute.attr, 115 &trigger_time_attribute.attr, 116 NULL, /* need to NULL terminate the list of attributes */ 117}; 118 119static struct spk_synth synth_decext = { 120 .name = "decext", 121 .version = DRV_VERSION, 122 .long_name = "Dectalk External", 123 .init = "[:pe -380]", 124 .procspeech = PROCSPEECH, 125 .clear = SYNTH_CLEAR, 126 .delay = 500, 127 .trigger = 50, 128 .jiffies = 50, 129 .full = 40000, 130 .flags = SF_DEC, 131 .startup = SYNTH_START, 132 .checkval = SYNTH_CHECK, 133 .vars = vars, 134 .probe = spk_serial_synth_probe, 135 .release = spk_serial_release, 136 .synth_immediate = spk_synth_immediate, 137 .catch_up = do_catch_up, 138 .flush = synth_flush, 139 .is_alive = spk_synth_is_alive_restart, 140 .synth_adjust = NULL, 141 .read_buff_add = NULL, 142 .get_index = NULL, 143 .indexing = { 144 .command = NULL, 145 .lowindex = 0, 146 .highindex = 0, 147 .currindex = 0, 148 }, 149 .attributes = { 150 .attrs = synth_attrs, 151 .name = "decext", 152 }, 153}; 154 155static void do_catch_up(struct spk_synth *synth) 156{ 157 u_char ch; 158 static u_char last = '\0'; 159 unsigned long flags; 160 unsigned long jiff_max; 161 struct var_t *jiffy_delta; 162 struct var_t *delay_time; 163 int jiffy_delta_val = 0; 164 int delay_time_val = 0; 165 166 jiffy_delta = spk_get_var(JIFFY); 167 delay_time = spk_get_var(DELAY); 168 169 spin_lock_irqsave(&speakup_info.spinlock, flags); 170 jiffy_delta_val = jiffy_delta->u.n.value; 171 spin_unlock_irqrestore(&speakup_info.spinlock, flags); 172 jiff_max = jiffies + jiffy_delta_val; 173 174 while (!kthread_should_stop()) { 175 spin_lock_irqsave(&speakup_info.spinlock, flags); 176 if (speakup_info.flushing) { 177 speakup_info.flushing = 0; 178 spin_unlock_irqrestore(&speakup_info.spinlock, flags); 179 synth->flush(synth); 180 continue; 181 } 182 if (synth_buffer_empty()) { 183 spin_unlock_irqrestore(&speakup_info.spinlock, flags); 184 break; 185 } 186 ch = synth_buffer_peek(); 187 set_current_state(TASK_INTERRUPTIBLE); 188 delay_time_val = delay_time->u.n.value; 189 spin_unlock_irqrestore(&speakup_info.spinlock, flags); 190 if (ch == '\n') 191 ch = 0x0D; 192 if (synth_full() || !spk_serial_out(ch)) { 193 schedule_timeout(msecs_to_jiffies(delay_time_val)); 194 continue; 195 } 196 set_current_state(TASK_RUNNING); 197 spin_lock_irqsave(&speakup_info.spinlock, flags); 198 synth_buffer_getc(); 199 spin_unlock_irqrestore(&speakup_info.spinlock, flags); 200 if (ch == '[') 201 in_escape = 1; 202 else if (ch == ']') 203 in_escape = 0; 204 else if (ch <= SPACE) { 205 if (!in_escape && strchr(",.!?;:", last)) 206 spk_serial_out(PROCSPEECH); 207 if (time_after_eq(jiffies, jiff_max)) { 208 if (!in_escape) 209 spk_serial_out(PROCSPEECH); 210 spin_lock_irqsave(&speakup_info.spinlock, flags); 211 jiffy_delta_val = jiffy_delta->u.n.value; 212 delay_time_val = delay_time->u.n.value; 213 spin_unlock_irqrestore(&speakup_info.spinlock, flags); 214 schedule_timeout(msecs_to_jiffies 215 (delay_time_val)); 216 jiff_max = jiffies + jiffy_delta_val; 217 } 218 } 219 last = ch; 220 } 221 if (!in_escape) 222 spk_serial_out(PROCSPEECH); 223} 224 225static void synth_flush(struct spk_synth *synth) 226{ 227 in_escape = 0; 228 spk_synth_immediate(synth, "\033P;10z\033\\"); 229} 230 231module_param_named(ser, synth_decext.ser, int, S_IRUGO); 232module_param_named(start, synth_decext.startup, short, S_IRUGO); 233 234MODULE_PARM_DESC(ser, "Set the serial port for the synthesizer (0-based)."); 235MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded."); 236 237static int __init decext_init(void) 238{ 239 return synth_add(&synth_decext); 240} 241 242static void __exit decext_exit(void) 243{ 244 synth_remove(&synth_decext); 245} 246 247module_init(decext_init); 248module_exit(decext_exit); 249MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>"); 250MODULE_AUTHOR("David Borowski"); 251MODULE_DESCRIPTION("Speakup support for DECtalk External synthesizers"); 252MODULE_LICENSE("GPL"); 253MODULE_VERSION(DRV_VERSION); 254 255