2 * originally written by: Kirk Reiser <kirk@braille.uwo.ca>
3 * this version considerably modified by David Borowski, david575@rogers.com
5 * Copyright (C) 1998-99 Kirk Reiser.
6 * Copyright (C) 2003 David Borowski.
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.
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.
18 * specificly written as a driver for the speakup screenreview
19 * s not a general device driver.
21 #include <linux/jiffies.h>
22 #include <linux/sched.h>
23 #include <linux/timer.h>
24 #include <linux/kthread.h>
30 #define DRV_VERSION "2.14"
31 #define SYNTH_CLEAR 0x03
32 #define PROCSPEECH 0x0b
33 static unsigned char last_char
;
35 static inline u_char
get_last_char(void)
37 u_char avail
= inb_p(speakup_info
.port_tts
+ UART_LSR
) & UART_LSR_DR
;
40 last_char
= inb_p(speakup_info
.port_tts
+ UART_RX
);
44 static inline bool synth_full(void)
46 return get_last_char() == 0x13;
49 static void do_catch_up(struct spk_synth
*synth
);
50 static void synth_flush(struct spk_synth
*synth
);
54 static struct var_t vars
[] = {
55 { CAPS_START
, .u
.s
= {"[:dv ap 222]" } },
56 { CAPS_STOP
, .u
.s
= {"[:dv ap 100]" } },
57 { RATE
, .u
.n
= {"[:ra %d]", 7, 0, 9, 150, 25, NULL
} },
58 { PITCH
, .u
.n
= {"[:dv ap %d]", 100, 0, 100, 0, 0, NULL
} },
59 { VOL
, .u
.n
= {"[:dv gv %d]", 13, 0, 16, 0, 5, NULL
} },
60 { PUNCT
, .u
.n
= {"[:pu %c]", 0, 0, 2, 0, 0, "nsa" } },
61 { VOICE
, .u
.n
= {"[:n%c]", 0, 0, 9, 0, 0, "phfdburwkv" } },
62 { DIRECT
, .u
.n
= {NULL
, 0, 0, 1, 0, 0, NULL
} },
67 * These attributes will appear in /sys/accessibility/speakup/decext.
69 static struct kobj_attribute caps_start_attribute
=
70 __ATTR(caps_start
, S_IWUSR
| S_IRUGO
, spk_var_show
, spk_var_store
);
71 static struct kobj_attribute caps_stop_attribute
=
72 __ATTR(caps_stop
, S_IWUSR
| S_IRUGO
, spk_var_show
, spk_var_store
);
73 static struct kobj_attribute pitch_attribute
=
74 __ATTR(pitch
, S_IWUSR
| S_IRUGO
, spk_var_show
, spk_var_store
);
75 static struct kobj_attribute punct_attribute
=
76 __ATTR(punct
, S_IWUSR
| S_IRUGO
, spk_var_show
, spk_var_store
);
77 static struct kobj_attribute rate_attribute
=
78 __ATTR(rate
, S_IWUSR
| S_IRUGO
, spk_var_show
, spk_var_store
);
79 static struct kobj_attribute voice_attribute
=
80 __ATTR(voice
, S_IWUSR
| S_IRUGO
, spk_var_show
, spk_var_store
);
81 static struct kobj_attribute vol_attribute
=
82 __ATTR(vol
, S_IWUSR
| S_IRUGO
, spk_var_show
, spk_var_store
);
84 static struct kobj_attribute delay_time_attribute
=
85 __ATTR(delay_time
, S_IWUSR
| S_IRUGO
, spk_var_show
, spk_var_store
);
86 static struct kobj_attribute direct_attribute
=
87 __ATTR(direct
, S_IWUSR
| S_IRUGO
, spk_var_show
, spk_var_store
);
88 static struct kobj_attribute full_time_attribute
=
89 __ATTR(full_time
, S_IWUSR
| S_IRUGO
, spk_var_show
, spk_var_store
);
90 static struct kobj_attribute jiffy_delta_attribute
=
91 __ATTR(jiffy_delta
, S_IWUSR
| S_IRUGO
, spk_var_show
, spk_var_store
);
92 static struct kobj_attribute trigger_time_attribute
=
93 __ATTR(trigger_time
, S_IWUSR
| S_IRUGO
, spk_var_show
, spk_var_store
);
96 * Create a group of attributes so that we can create and destroy them all
99 static struct attribute
*synth_attrs
[] = {
100 &caps_start_attribute
.attr
,
101 &caps_stop_attribute
.attr
,
102 &pitch_attribute
.attr
,
103 &punct_attribute
.attr
,
104 &rate_attribute
.attr
,
105 &voice_attribute
.attr
,
107 &delay_time_attribute
.attr
,
108 &direct_attribute
.attr
,
109 &full_time_attribute
.attr
,
110 &jiffy_delta_attribute
.attr
,
111 &trigger_time_attribute
.attr
,
112 NULL
, /* need to NULL terminate the list of attributes */
115 static struct spk_synth synth_decext
= {
117 .version
= DRV_VERSION
,
118 .long_name
= "Dectalk External",
119 .init
= "[:pe -380]",
120 .procspeech
= PROCSPEECH
,
121 .clear
= SYNTH_CLEAR
,
127 .startup
= SYNTH_START
,
128 .checkval
= SYNTH_CHECK
,
130 .probe
= spk_serial_synth_probe
,
131 .release
= spk_serial_release
,
132 .synth_immediate
= spk_synth_immediate
,
133 .catch_up
= do_catch_up
,
134 .flush
= synth_flush
,
135 .is_alive
= spk_synth_is_alive_restart
,
136 .synth_adjust
= NULL
,
137 .read_buff_add
= NULL
,
146 .attrs
= synth_attrs
,
151 static void do_catch_up(struct spk_synth
*synth
)
154 static u_char last
= '\0';
156 unsigned long jiff_max
;
157 struct var_t
*jiffy_delta
;
158 struct var_t
*delay_time
;
159 int jiffy_delta_val
= 0;
160 int delay_time_val
= 0;
162 jiffy_delta
= spk_get_var(JIFFY
);
163 delay_time
= spk_get_var(DELAY
);
165 spin_lock_irqsave(&speakup_info
.spinlock
, flags
);
166 jiffy_delta_val
= jiffy_delta
->u
.n
.value
;
167 spin_unlock_irqrestore(&speakup_info
.spinlock
, flags
);
168 jiff_max
= jiffies
+ jiffy_delta_val
;
170 while (!kthread_should_stop()) {
171 spin_lock_irqsave(&speakup_info
.spinlock
, flags
);
172 if (speakup_info
.flushing
) {
173 speakup_info
.flushing
= 0;
174 spin_unlock_irqrestore(&speakup_info
.spinlock
, flags
);
178 if (synth_buffer_empty()) {
179 spin_unlock_irqrestore(&speakup_info
.spinlock
, flags
);
182 ch
= synth_buffer_peek();
183 set_current_state(TASK_INTERRUPTIBLE
);
184 delay_time_val
= delay_time
->u
.n
.value
;
185 spin_unlock_irqrestore(&speakup_info
.spinlock
, flags
);
188 if (synth_full() || !spk_serial_out(ch
)) {
189 schedule_timeout(msecs_to_jiffies(delay_time_val
));
192 set_current_state(TASK_RUNNING
);
193 spin_lock_irqsave(&speakup_info
.spinlock
, flags
);
195 spin_unlock_irqrestore(&speakup_info
.spinlock
, flags
);
200 else if (ch
<= SPACE
) {
201 if (!in_escape
&& strchr(",.!?;:", last
))
202 spk_serial_out(PROCSPEECH
);
203 if (time_after_eq(jiffies
, jiff_max
)) {
205 spk_serial_out(PROCSPEECH
);
206 spin_lock_irqsave(&speakup_info
.spinlock
,
208 jiffy_delta_val
= jiffy_delta
->u
.n
.value
;
209 delay_time_val
= delay_time
->u
.n
.value
;
210 spin_unlock_irqrestore(&speakup_info
.spinlock
,
212 schedule_timeout(msecs_to_jiffies
214 jiff_max
= jiffies
+ jiffy_delta_val
;
220 spk_serial_out(PROCSPEECH
);
223 static void synth_flush(struct spk_synth
*synth
)
226 spk_synth_immediate(synth
, "\033P;10z\033\\");
229 module_param_named(ser
, synth_decext
.ser
, int, S_IRUGO
);
230 module_param_named(start
, synth_decext
.startup
, short, S_IRUGO
);
232 MODULE_PARM_DESC(ser
, "Set the serial port for the synthesizer (0-based).");
233 MODULE_PARM_DESC(start
, "Start the synthesizer once it is loaded.");
235 module_spk_synth(synth_decext
);
237 MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
238 MODULE_AUTHOR("David Borowski");
239 MODULE_DESCRIPTION("Speakup support for DECtalk External synthesizers");
240 MODULE_LICENSE("GPL");
241 MODULE_VERSION(DRV_VERSION
);