2 * 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.
17 * this code is specificly written as a driver for the speakup screenreview
18 * package and is not a general device driver.
19 * This driver is for the Aicom Acent PC internal synthesizer.
22 #include <linux/jiffies.h>
23 #include <linux/sched.h>
24 #include <linux/timer.h>
25 #include <linux/kthread.h>
30 #include "speakup_acnt.h" /* local header file for Accent values */
32 #define DRV_VERSION "2.10"
33 #define PROCSPEECH '\r'
35 static int synth_probe(struct spk_synth *synth);
36 static void accent_release(void);
37 static const char *synth_immediate(struct spk_synth *synth, const char *buf);
38 static void do_catch_up(struct spk_synth *synth);
39 static void synth_flush(struct spk_synth *synth);
41 static int synth_port_control;
42 static int port_forced;
43 static unsigned int synth_portlist[] = { 0x2a8, 0 };
45 static struct var_t vars[] = {
46 { CAPS_START, .u.s = {"\033P8" } },
47 { CAPS_STOP, .u.s = {"\033P5" } },
48 { RATE, .u.n = {"\033R%c", 9, 0, 17, 0, 0, "0123456789abcdefgh" } },
49 { PITCH, .u.n = {"\033P%d", 5, 0, 9, 0, 0, NULL } },
50 { VOL, .u.n = {"\033A%d", 5, 0, 9, 0, 0, NULL } },
51 { TONE, .u.n = {"\033V%d", 5, 0, 9, 0, 0, NULL } },
52 { DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
57 * These attributes will appear in /sys/accessibility/speakup/acntpc.
59 static struct kobj_attribute caps_start_attribute =
60 __ATTR(caps_start, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
61 static struct kobj_attribute caps_stop_attribute =
62 __ATTR(caps_stop, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
63 static struct kobj_attribute pitch_attribute =
64 __ATTR(pitch, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
65 static struct kobj_attribute rate_attribute =
66 __ATTR(rate, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
67 static struct kobj_attribute tone_attribute =
68 __ATTR(tone, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
69 static struct kobj_attribute vol_attribute =
70 __ATTR(vol, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
72 static struct kobj_attribute delay_time_attribute =
73 __ATTR(delay_time, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
74 static struct kobj_attribute direct_attribute =
75 __ATTR(direct, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
76 static struct kobj_attribute full_time_attribute =
77 __ATTR(full_time, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
78 static struct kobj_attribute jiffy_delta_attribute =
79 __ATTR(jiffy_delta, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
80 static struct kobj_attribute trigger_time_attribute =
81 __ATTR(trigger_time, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
84 * Create a group of attributes so that we can create and destroy them all
87 static struct attribute *synth_attrs[] = {
88 &caps_start_attribute.attr,
89 &caps_stop_attribute.attr,
90 &pitch_attribute.attr,
94 &delay_time_attribute.attr,
95 &direct_attribute.attr,
96 &full_time_attribute.attr,
97 &jiffy_delta_attribute.attr,
98 &trigger_time_attribute.attr,
99 NULL, /* need to NULL terminate the list of attributes */
102 static struct spk_synth synth_acntpc = {
104 .version = DRV_VERSION,
105 .long_name = "Accent PC",
106 .init = "\033=X \033Oi\033T2\033=M\033N1\n",
107 .procspeech = PROCSPEECH,
108 .clear = SYNTH_CLEAR,
113 .startup = SYNTH_START,
114 .checkval = SYNTH_CHECK,
116 .probe = synth_probe,
117 .release = accent_release,
118 .synth_immediate = synth_immediate,
119 .catch_up = do_catch_up,
120 .flush = synth_flush,
121 .is_alive = spk_synth_is_alive_nop,
122 .synth_adjust = NULL,
123 .read_buff_add = NULL,
132 .attrs = synth_attrs,
137 static inline bool synth_writable(void)
139 return inb_p(synth_port_control) & SYNTH_WRITABLE;
142 static inline bool synth_full(void)
144 return inb_p(speakup_info.port_tts + UART_RX) == 'F';
147 static const char *synth_immediate(struct spk_synth *synth, const char *buf)
151 while ((ch = *buf)) {
152 int timeout = SPK_XMITR_TIMEOUT;
158 while (synth_writable()) {
163 outb_p(ch, speakup_info.port_tts);
169 static void do_catch_up(struct spk_synth *synth)
173 unsigned long jiff_max;
178 struct var_t *delay_time;
179 struct var_t *full_time;
180 struct var_t *jiffy_delta;
182 jiffy_delta = spk_get_var(JIFFY);
183 delay_time = spk_get_var(DELAY);
184 full_time = spk_get_var(FULL);
186 spin_lock_irqsave(&speakup_info.spinlock, flags);
187 jiffy_delta_val = jiffy_delta->u.n.value;
188 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
190 jiff_max = jiffies + jiffy_delta_val;
191 while (!kthread_should_stop()) {
192 spin_lock_irqsave(&speakup_info.spinlock, flags);
193 if (speakup_info.flushing) {
194 speakup_info.flushing = 0;
195 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
199 if (synth_buffer_empty()) {
200 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
203 set_current_state(TASK_INTERRUPTIBLE);
204 full_time_val = full_time->u.n.value;
205 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
207 schedule_timeout(msecs_to_jiffies(full_time_val));
210 set_current_state(TASK_RUNNING);
211 timeout = SPK_XMITR_TIMEOUT;
212 while (synth_writable()) {
217 spin_lock_irqsave(&speakup_info.spinlock, flags);
218 ch = synth_buffer_getc();
219 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
222 outb_p(ch, speakup_info.port_tts);
223 if (time_after_eq(jiffies, jiff_max) && ch == SPACE) {
224 timeout = SPK_XMITR_TIMEOUT;
225 while (synth_writable()) {
230 outb_p(PROCSPEECH, speakup_info.port_tts);
231 spin_lock_irqsave(&speakup_info.spinlock, flags);
232 jiffy_delta_val = jiffy_delta->u.n.value;
233 delay_time_val = delay_time->u.n.value;
234 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
235 schedule_timeout(msecs_to_jiffies(delay_time_val));
236 jiff_max = jiffies+jiffy_delta_val;
239 timeout = SPK_XMITR_TIMEOUT;
240 while (synth_writable()) {
245 outb_p(PROCSPEECH, speakup_info.port_tts);
248 static void synth_flush(struct spk_synth *synth)
250 outb_p(SYNTH_CLEAR, speakup_info.port_tts);
253 static int synth_probe(struct spk_synth *synth)
255 unsigned int port_val = 0;
258 pr_info("Probing for %s.\n", synth->long_name);
260 speakup_info.port_tts = port_forced;
261 pr_info("probe forced to %x by kernel command line\n",
262 speakup_info.port_tts);
263 if (synth_request_region(speakup_info.port_tts-1,
265 pr_warn("sorry, port already reserved\n");
268 port_val = inw(speakup_info.port_tts-1);
269 synth_port_control = speakup_info.port_tts-1;
271 for (i = 0; synth_portlist[i]; i++) {
272 if (synth_request_region(synth_portlist[i],
275 ("request_region: failed with 0x%x, %d\n",
276 synth_portlist[i], SYNTH_IO_EXTENT);
279 port_val = inw(synth_portlist[i]) & 0xfffc;
280 if (port_val == 0x53fc) {
281 /* 'S' and out&input bits */
282 synth_port_control = synth_portlist[i];
283 speakup_info.port_tts = synth_port_control+1;
289 if (port_val != 0x53fc) {
290 /* 'S' and out&input bits */
291 pr_info("%s: not found\n", synth->long_name);
292 synth_release_region(synth_port_control, SYNTH_IO_EXTENT);
293 synth_port_control = 0;
296 pr_info("%s: %03x-%03x, driver version %s,\n", synth->long_name,
297 synth_port_control, synth_port_control+SYNTH_IO_EXTENT-1,
303 static void accent_release(void)
305 if (speakup_info.port_tts)
306 synth_release_region(speakup_info.port_tts-1, SYNTH_IO_EXTENT);
307 speakup_info.port_tts = 0;
310 module_param_named(port, port_forced, int, S_IRUGO);
311 module_param_named(start, synth_acntpc.startup, short, S_IRUGO);
313 MODULE_PARM_DESC(port, "Set the port for the synthesizer (override probing).");
314 MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
316 module_spk_synth(synth_acntpc);
318 MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
319 MODULE_AUTHOR("David Borowski");
320 MODULE_DESCRIPTION("Speakup support for Accent PC synthesizer");
321 MODULE_LICENSE("GPL");
322 MODULE_VERSION(DRV_VERSION);