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Diffstat (limited to 'drivers/staging/speakup/speakup_decext.c')
-rw-r--r--drivers/staging/speakup/speakup_decext.c242
1 files changed, 242 insertions, 0 deletions
diff --git a/drivers/staging/speakup/speakup_decext.c b/drivers/staging/speakup/speakup_decext.c
new file mode 100644
index 00000000000..351bd86d42b
--- /dev/null
+++ b/drivers/staging/speakup/speakup_decext.c
@@ -0,0 +1,242 @@
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#define get_last_char() ((inb_p(speakup_info.port_tts + UART_LSR) & UART_LSR_DR)? \
39 (last_char = inb_p(speakup_info.port_tts + UART_RX)) : last_char)
40#define synth_full() (get_last_char() == 0x13)
41
42static void do_catch_up(struct spk_synth *synth);
43static void synth_flush(struct spk_synth *synth);
44
45static int in_escape;
46
47static struct var_t vars[] = {
48 { CAPS_START, .u.s = {"[:dv ap 222]" }},
49 { CAPS_STOP, .u.s = {"[:dv ap 100]" }},
50 { RATE, .u.n = {"[:ra %d]", 7, 0, 9, 150, 25, NULL }},
51 { PITCH, .u.n = {"[:dv ap %d]", 100, 0, 100, 0, 0, NULL }},
52 { VOL, .u.n = {"[:dv gv %d]", 13, 0, 16, 0, 5, NULL }},
53 { PUNCT, .u.n = {"[:pu %c]", 0, 0, 2, 0, 0, "nsa" }},
54 { VOICE, .u.n = {"[:n%c]", 0, 0, 9, 0, 0, "phfdburwkv" }},
55 { DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL }},
56 V_LAST_VAR
57};
58
59/*
60 * These attributes will appear in /sys/accessibility/speakup/decext.
61 */
62static struct kobj_attribute caps_start_attribute =
63 __ATTR(caps_start, USER_RW, spk_var_show, spk_var_store);
64static struct kobj_attribute caps_stop_attribute =
65 __ATTR(caps_stop, USER_RW, spk_var_show, spk_var_store);
66static struct kobj_attribute pitch_attribute =
67 __ATTR(pitch, USER_RW, spk_var_show, spk_var_store);
68static struct kobj_attribute punct_attribute =
69 __ATTR(punct, USER_RW, spk_var_show, spk_var_store);
70static struct kobj_attribute rate_attribute =
71 __ATTR(rate, USER_RW, spk_var_show, spk_var_store);
72static struct kobj_attribute voice_attribute =
73 __ATTR(voice, USER_RW, spk_var_show, spk_var_store);
74static struct kobj_attribute vol_attribute =
75 __ATTR(vol, USER_RW, spk_var_show, spk_var_store);
76
77static struct kobj_attribute delay_time_attribute =
78 __ATTR(delay_time, ROOT_W, spk_var_show, spk_var_store);
79static struct kobj_attribute direct_attribute =
80 __ATTR(direct, USER_RW, spk_var_show, spk_var_store);
81static struct kobj_attribute full_time_attribute =
82 __ATTR(full_time, ROOT_W, spk_var_show, spk_var_store);
83static struct kobj_attribute jiffy_delta_attribute =
84 __ATTR(jiffy_delta, ROOT_W, spk_var_show, spk_var_store);
85static struct kobj_attribute trigger_time_attribute =
86 __ATTR(trigger_time, ROOT_W, spk_var_show, spk_var_store);
87
88/*
89 * Create a group of attributes so that we can create and destroy them all
90 * at once.
91 */
92static struct attribute *synth_attrs[] = {
93 &caps_start_attribute.attr,
94 &caps_stop_attribute.attr,
95 &pitch_attribute.attr,
96 &punct_attribute.attr,
97 &rate_attribute.attr,
98 &voice_attribute.attr,
99 &vol_attribute.attr,
100 &delay_time_attribute.attr,
101 &direct_attribute.attr,
102 &full_time_attribute.attr,
103 &jiffy_delta_attribute.attr,
104 &trigger_time_attribute.attr,
105 NULL, /* need to NULL terminate the list of attributes */
106};
107
108static struct spk_synth synth_decext = {
109 .name = "decext",
110 .version = DRV_VERSION,
111 .long_name = "Dectalk External",
112 .init = "[:pe -380]",
113 .procspeech = PROCSPEECH,
114 .clear = SYNTH_CLEAR,
115 .delay = 500,
116 .trigger = 50,
117 .jiffies = 50,
118 .full = 40000,
119 .flags = SF_DEC,
120 .startup = SYNTH_START,
121 .checkval = SYNTH_CHECK,
122 .vars = vars,
123 .probe = serial_synth_probe,
124 .release = spk_serial_release,
125 .synth_immediate = spk_synth_immediate,
126 .catch_up = do_catch_up,
127 .flush = synth_flush,
128 .is_alive = spk_synth_is_alive_restart,
129 .synth_adjust = NULL,
130 .read_buff_add = NULL,
131 .get_index = NULL,
132 .indexing = {
133 .command = NULL,
134 .lowindex = 0,
135 .highindex = 0,
136 .currindex = 0,
137 },
138 .attributes = {
139 .attrs = synth_attrs,
140 .name = "decext",
141 },
142};
143
144static void do_catch_up(struct spk_synth *synth)
145{
146 u_char ch;
147 static u_char last = '\0';
148 unsigned long flags;
149 unsigned long jiff_max;
150 struct var_t *jiffy_delta;
151 struct var_t *delay_time;
152 int jiffy_delta_val = 0;
153 int delay_time_val = 0;
154
155 jiffy_delta = get_var(JIFFY);
156 delay_time = get_var(DELAY);
157
158 spk_lock(flags);
159 jiffy_delta_val = jiffy_delta->u.n.value;
160 spk_unlock(flags);
161 jiff_max = jiffies + jiffy_delta_val;
162
163 while (!kthread_should_stop()) {
164 spk_lock(flags);
165 if (speakup_info.flushing) {
166 speakup_info.flushing = 0;
167 spk_unlock(flags);
168 synth->flush(synth);
169 continue;
170 }
171 if (synth_buffer_empty()) {
172 spk_unlock(flags);
173 break;
174 }
175 ch = synth_buffer_peek();
176 set_current_state(TASK_INTERRUPTIBLE);
177 delay_time_val = delay_time->u.n.value;
178 spk_unlock(flags);
179 if (ch == '\n')
180 ch = 0x0D;
181 if (synth_full() || !spk_serial_out(ch)) {
182 schedule_timeout(msecs_to_jiffies(delay_time_val));
183 continue;
184 }
185 set_current_state(TASK_RUNNING);
186 spk_lock(flags);
187 synth_buffer_getc();
188 spk_unlock(flags);
189 if (ch == '[')
190 in_escape = 1;
191 else if (ch == ']')
192 in_escape = 0;
193 else if (ch <= SPACE) {
194 if (!in_escape && strchr(",.!?;:", last))
195 spk_serial_out(PROCSPEECH);
196 if (jiffies >= jiff_max) {
197 if ( ! in_escape )
198 spk_serial_out(PROCSPEECH);
199 spk_lock(flags);
200 jiffy_delta_val = jiffy_delta->u.n.value;
201 delay_time_val = delay_time->u.n.value;
202 spk_unlock(flags);
203 schedule_timeout(msecs_to_jiffies(delay_time_val));
204 jiff_max = jiffies + jiffy_delta_val;
205 }
206 }
207 last = ch;
208 }
209 if (!in_escape)
210 spk_serial_out(PROCSPEECH);
211}
212
213static void synth_flush(struct spk_synth *synth)
214{
215 in_escape = 0;
216 spk_synth_immediate(synth, "\033P;10z\033\\");
217}
218
219module_param_named(ser, synth_decext.ser, int, S_IRUGO);
220module_param_named(start, synth_decext.startup, short, S_IRUGO);
221
222MODULE_PARM_DESC(ser, "Set the serial port for the synthesizer (0-based).");
223MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
224
225static int __init decext_init(void)
226{
227 return synth_add(&synth_decext);
228}
229
230static void __exit decext_exit(void)
231{
232 synth_remove(&synth_decext);
233}
234
235module_init(decext_init);
236module_exit(decext_exit);
237MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
238MODULE_AUTHOR("David Borowski");
239MODULE_DESCRIPTION("Speakup support for DECtalk External synthesizers");
240MODULE_LICENSE("GPL");
241MODULE_VERSION(DRV_VERSION);
242
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-22 04:43:29 -0400