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
37 static unsigned char last_char;
38
get_last_char(void)39 static 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
synth_full(void)48 static inline bool synth_full(void)
49 {
50 return get_last_char() == 0x13;
51 }
52
53 static void do_catch_up(struct spk_synth *synth);
54 static void synth_flush(struct spk_synth *synth);
55
56 static int in_escape;
57
58 static 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 */
73 static struct kobj_attribute caps_start_attribute =
74 __ATTR(caps_start, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
75 static struct kobj_attribute caps_stop_attribute =
76 __ATTR(caps_stop, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
77 static struct kobj_attribute pitch_attribute =
78 __ATTR(pitch, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
79 static struct kobj_attribute punct_attribute =
80 __ATTR(punct, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
81 static struct kobj_attribute rate_attribute =
82 __ATTR(rate, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
83 static struct kobj_attribute voice_attribute =
84 __ATTR(voice, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
85 static struct kobj_attribute vol_attribute =
86 __ATTR(vol, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
87
88 static struct kobj_attribute delay_time_attribute =
89 __ATTR(delay_time, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
90 static struct kobj_attribute direct_attribute =
91 __ATTR(direct, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
92 static struct kobj_attribute full_time_attribute =
93 __ATTR(full_time, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
94 static struct kobj_attribute jiffy_delta_attribute =
95 __ATTR(jiffy_delta, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
96 static 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 */
103 static 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
119 static 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
do_catch_up(struct spk_synth * synth)155 static 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,
211 flags);
212 jiffy_delta_val = jiffy_delta->u.n.value;
213 delay_time_val = delay_time->u.n.value;
214 spin_unlock_irqrestore(&speakup_info.spinlock,
215 flags);
216 schedule_timeout(msecs_to_jiffies
217 (delay_time_val));
218 jiff_max = jiffies + jiffy_delta_val;
219 }
220 }
221 last = ch;
222 }
223 if (!in_escape)
224 spk_serial_out(PROCSPEECH);
225 }
226
synth_flush(struct spk_synth * synth)227 static void synth_flush(struct spk_synth *synth)
228 {
229 in_escape = 0;
230 spk_synth_immediate(synth, "\033P;10z\033\\");
231 }
232
233 module_param_named(ser, synth_decext.ser, int, S_IRUGO);
234 module_param_named(start, synth_decext.startup, short, S_IRUGO);
235
236 MODULE_PARM_DESC(ser, "Set the serial port for the synthesizer (0-based).");
237 MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
238
239 module_spk_synth(synth_decext);
240
241 MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
242 MODULE_AUTHOR("David Borowski");
243 MODULE_DESCRIPTION("Speakup support for DECtalk External synthesizers");
244 MODULE_LICENSE("GPL");
245 MODULE_VERSION(DRV_VERSION);
246
247