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 * this code is specifically written as a driver for the speakup screenreview
10 * package and is not a general device driver.
11 */
12#include <linux/jiffies.h>
13#include <linux/sched.h>
14#include <linux/timer.h>
15#include <linux/kthread.h>
16#include <linux/serial_reg.h> /* for UART_MCR* constants */
17
18#include "spk_priv.h"
19#include "speakup.h"
20
21#define DRV_VERSION "2.21"
22#define SYNTH_CLEAR 0x18
23#define PROCSPEECH '\r'
24
25static void do_catch_up(struct spk_synth *synth);
26
27
28
29enum default_vars_id {
30 CAPS_START_ID = 0, CAPS_STOP_ID,
31 RATE_ID, PITCH_ID,
32 VOL_ID, VOICE_ID, LANG_ID,
33 DIRECT_ID, V_LAST_VAR_ID,
34 NB_ID
35};
36
37
38
39
40static struct var_t vars[NB_ID] = {
41 [CAPS_START_ID] = { CAPS_START, .u.s = {"cap, " } },
42 [CAPS_STOP_ID] = { CAPS_STOP, .u.s = {"" } },
43 [RATE_ID] = { RATE, .u.n = {"@W%d", 6, 1, 9, 0, 0, NULL } },
44 [PITCH_ID] = { PITCH, .u.n = {"@F%x", 10, 0, 15, 0, 0, NULL } },
45 [VOL_ID] = { VOL, .u.n = {"@A%x", 10, 0, 15, 0, 0, NULL } },
46 [VOICE_ID] = { VOICE, .u.n = {"@V%d", 1, 1, 6, 0, 0, NULL } },
47 [LANG_ID] = { LANG, .u.n = {"@=%d,", 1, 1, 4, 0, 0, NULL } },
48 [DIRECT_ID] = { DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
49 V_LAST_VAR
50};
51
52/*
53 * These attributes will appear in /sys/accessibility/speakup/apollo.
54 */
55static struct kobj_attribute caps_start_attribute =
56 __ATTR(caps_start, 0644, spk_var_show, spk_var_store);
57static struct kobj_attribute caps_stop_attribute =
58 __ATTR(caps_stop, 0644, spk_var_show, spk_var_store);
59static struct kobj_attribute lang_attribute =
60 __ATTR(lang, 0644, spk_var_show, spk_var_store);
61static struct kobj_attribute pitch_attribute =
62 __ATTR(pitch, 0644, spk_var_show, spk_var_store);
63static struct kobj_attribute rate_attribute =
64 __ATTR(rate, 0644, spk_var_show, spk_var_store);
65static struct kobj_attribute voice_attribute =
66 __ATTR(voice, 0644, spk_var_show, spk_var_store);
67static struct kobj_attribute vol_attribute =
68 __ATTR(vol, 0644, spk_var_show, spk_var_store);
69
70static struct kobj_attribute delay_time_attribute =
71 __ATTR(delay_time, 0644, spk_var_show, spk_var_store);
72static struct kobj_attribute direct_attribute =
73 __ATTR(direct, 0644, spk_var_show, spk_var_store);
74static struct kobj_attribute full_time_attribute =
75 __ATTR(full_time, 0644, spk_var_show, spk_var_store);
76static struct kobj_attribute jiffy_delta_attribute =
77 __ATTR(jiffy_delta, 0644, spk_var_show, spk_var_store);
78static struct kobj_attribute trigger_time_attribute =
79 __ATTR(trigger_time, 0644, spk_var_show, spk_var_store);
80
81/*
82 * Create a group of attributes so that we can create and destroy them all
83 * at once.
84 */
85static struct attribute *synth_attrs[] = {
86 &caps_start_attribute.attr,
87 &caps_stop_attribute.attr,
88 &lang_attribute.attr,
89 &pitch_attribute.attr,
90 &rate_attribute.attr,
91 &voice_attribute.attr,
92 &vol_attribute.attr,
93 &delay_time_attribute.attr,
94 &direct_attribute.attr,
95 &full_time_attribute.attr,
96 &jiffy_delta_attribute.attr,
97 &trigger_time_attribute.attr,
98 NULL, /* need to NULL terminate the list of attributes */
99};
100
101static struct spk_synth synth_apollo = {
102 .name = "apollo",
103 .version = DRV_VERSION,
104 .long_name = "Apollo",
105 .init = "@R3@D0@K1\r",
106 .procspeech = PROCSPEECH,
107 .clear = SYNTH_CLEAR,
108 .delay = 500,
109 .trigger = 50,
110 .jiffies = 50,
111 .full = 40000,
112 .dev_name = SYNTH_DEFAULT_DEV,
113 .startup = SYNTH_START,
114 .checkval = SYNTH_CHECK,
115 .vars = vars,
116 .io_ops = &spk_ttyio_ops,
117 .probe = spk_ttyio_synth_probe,
118 .release = spk_ttyio_release,
119 .synth_immediate = spk_ttyio_synth_immediate,
120 .catch_up = do_catch_up,
121 .flush = spk_synth_flush,
122 .is_alive = spk_synth_is_alive_restart,
123 .synth_adjust = NULL,
124 .read_buff_add = NULL,
125 .get_index = NULL,
126 .indexing = {
127 .command = NULL,
128 .lowindex = 0,
129 .highindex = 0,
130 .currindex = 0,
131 },
132 .attributes = {
133 .attrs = synth_attrs,
134 .name = "apollo",
135 },
136};
137
138static void do_catch_up(struct spk_synth *synth)
139{
140 u_char ch;
141 unsigned long flags;
142 unsigned long jiff_max;
143 struct var_t *jiffy_delta;
144 struct var_t *delay_time;
145 struct var_t *full_time;
146 int full_time_val = 0;
147 int delay_time_val = 0;
148 int jiffy_delta_val = 0;
149
150 jiffy_delta = spk_get_var(var_id: JIFFY);
151 delay_time = spk_get_var(var_id: DELAY);
152 full_time = spk_get_var(var_id: FULL);
153 spin_lock_irqsave(&speakup_info.spinlock, flags);
154 jiffy_delta_val = jiffy_delta->u.n.value;
155 spin_unlock_irqrestore(lock: &speakup_info.spinlock, flags);
156 jiff_max = jiffies + jiffy_delta_val;
157
158 while (!kthread_should_stop()) {
159 spin_lock_irqsave(&speakup_info.spinlock, flags);
160 jiffy_delta_val = jiffy_delta->u.n.value;
161 full_time_val = full_time->u.n.value;
162 delay_time_val = delay_time->u.n.value;
163 if (speakup_info.flushing) {
164 speakup_info.flushing = 0;
165 spin_unlock_irqrestore(lock: &speakup_info.spinlock, flags);
166 synth->flush(synth);
167 continue;
168 }
169 synth_buffer_skip_nonlatin1();
170 if (synth_buffer_empty()) {
171 spin_unlock_irqrestore(lock: &speakup_info.spinlock, flags);
172 break;
173 }
174 ch = synth_buffer_peek();
175 set_current_state(TASK_INTERRUPTIBLE);
176 full_time_val = full_time->u.n.value;
177 spin_unlock_irqrestore(lock: &speakup_info.spinlock, flags);
178 if (!synth->io_ops->synth_out(synth, ch)) {
179 synth->io_ops->tiocmset(synth, 0, UART_MCR_RTS);
180 synth->io_ops->tiocmset(synth, UART_MCR_RTS, 0);
181 schedule_timeout(timeout: msecs_to_jiffies(m: full_time_val));
182 continue;
183 }
184 if (time_after_eq(jiffies, jiff_max) && (ch == SPACE)) {
185 spin_lock_irqsave(&speakup_info.spinlock, flags);
186 jiffy_delta_val = jiffy_delta->u.n.value;
187 full_time_val = full_time->u.n.value;
188 delay_time_val = delay_time->u.n.value;
189 spin_unlock_irqrestore(lock: &speakup_info.spinlock, flags);
190 if (synth->io_ops->synth_out(synth, synth->procspeech))
191 schedule_timeout(timeout: msecs_to_jiffies
192 (m: delay_time_val));
193 else
194 schedule_timeout(timeout: msecs_to_jiffies
195 (m: full_time_val));
196 jiff_max = jiffies + jiffy_delta_val;
197 }
198 set_current_state(TASK_RUNNING);
199 spin_lock_irqsave(&speakup_info.spinlock, flags);
200 synth_buffer_getc();
201 spin_unlock_irqrestore(lock: &speakup_info.spinlock, flags);
202 }
203 synth->io_ops->synth_out(synth, PROCSPEECH);
204}
205
206module_param_named(ser, synth_apollo.ser, int, 0444);
207module_param_named(dev, synth_apollo.dev_name, charp, 0444);
208module_param_named(start, synth_apollo.startup, short, 0444);
209module_param_named(rate, vars[RATE_ID].u.n.default_val, int, 0444);
210module_param_named(pitch, vars[PITCH_ID].u.n.default_val, int, 0444);
211module_param_named(vol, vars[VOL_ID].u.n.default_val, int, 0444);
212module_param_named(voice, vars[VOICE_ID].u.n.default_val, int, 0444);
213module_param_named(lang, vars[LANG_ID].u.n.default_val, int, 0444);
214module_param_named(direct, vars[DIRECT_ID].u.n.default_val, int, 0444);
215
216
217MODULE_PARM_DESC(ser, "Set the serial port for the synthesizer (0-based).");
218MODULE_PARM_DESC(dev, "Set the device e.g. ttyUSB0, for the synthesizer.");
219MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
220MODULE_PARM_DESC(rate, "Set the rate variable on load.");
221MODULE_PARM_DESC(pitch, "Set the pitch variable on load.");
222MODULE_PARM_DESC(vol, "Set the vol variable on load.");
223MODULE_PARM_DESC(voice, "Set the voice variable on load.");
224MODULE_PARM_DESC(lang, "Set the lang variable on load.");
225MODULE_PARM_DESC(direct, "Set the direct variable on load.");
226
227
228
229module_spk_synth(synth_apollo);
230
231MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
232MODULE_AUTHOR("David Borowski");
233MODULE_DESCRIPTION("Speakup support for Apollo II synthesizer");
234MODULE_LICENSE("GPL");
235MODULE_VERSION(DRV_VERSION);
236
237

source code of linux/drivers/accessibility/speakup/speakup_apollo.c