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c6e3fd22 WH |
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 | * package it's not a general device driver. | |
24 | * This driver is for the RC Systems DoubleTalk PC internal synthesizer. | |
25 | */ | |
26 | #include <linux/jiffies.h> | |
27 | #include <linux/sched.h> | |
28 | #include <linux/timer.h> | |
29 | #include <linux/kthread.h> | |
30 | ||
31 | #include "spk_priv.h" | |
32 | #include "serialio.h" | |
33 | #include "speakup_dtlk.h" /* local header file for DoubleTalk values */ | |
34 | #include "speakup.h" | |
35 | ||
36 | #define DRV_VERSION "2.10" | |
37 | #define PROCSPEECH 0x00 | |
c6e3fd22 WH |
38 | |
39 | static int synth_probe(struct spk_synth *synth); | |
40 | static void dtlk_release(void); | |
41 | static const char *synth_immediate(struct spk_synth *synth, const char *buf); | |
42 | static void do_catch_up(struct spk_synth *synth); | |
43 | static void synth_flush(struct spk_synth *synth); | |
44 | ||
45 | static int synth_lpc; | |
46 | static int port_forced; | |
2c9e0cb0 CB |
47 | static unsigned int synth_portlist[] = { |
48 | 0x25e, 0x29e, 0x2de, 0x31e, 0x35e, 0x39e, 0 | |
49 | }; | |
c6e3fd22 WH |
50 | static u_char synth_status; |
51 | ||
52 | static struct var_t vars[] = { | |
2c9e0cb0 CB |
53 | { CAPS_START, .u.s = {"\x01+35p" } }, |
54 | { CAPS_STOP, .u.s = {"\x01-35p" } }, | |
55 | { RATE, .u.n = {"\x01%ds", 8, 0, 9, 0, 0, NULL } }, | |
56 | { PITCH, .u.n = {"\x01%dp", 50, 0, 99, 0, 0, NULL } }, | |
57 | { VOL, .u.n = {"\x01%dv", 5, 0, 9, 0, 0, NULL } }, | |
58 | { TONE, .u.n = {"\x01%dx", 1, 0, 2, 0, 0, NULL } }, | |
59 | { PUNCT, .u.n = {"\x01%db", 7, 0, 15, 0, 0, NULL } }, | |
60 | { VOICE, .u.n = {"\x01%do", 0, 0, 7, 0, 0, NULL } }, | |
61 | { FREQUENCY, .u.n = {"\x01%df", 5, 0, 9, 0, 0, NULL } }, | |
62 | { DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } }, | |
c6e3fd22 WH |
63 | V_LAST_VAR |
64 | }; | |
65 | ||
66 | /* | |
67 | * These attributes will appear in /sys/accessibility/speakup/dtlk. | |
68 | */ | |
69 | static struct kobj_attribute caps_start_attribute = | |
70 | __ATTR(caps_start, USER_RW, spk_var_show, spk_var_store); | |
71 | static struct kobj_attribute caps_stop_attribute = | |
72 | __ATTR(caps_stop, USER_RW, spk_var_show, spk_var_store); | |
73 | static struct kobj_attribute freq_attribute = | |
74 | __ATTR(freq, USER_RW, spk_var_show, spk_var_store); | |
75 | static struct kobj_attribute pitch_attribute = | |
76 | __ATTR(pitch, USER_RW, spk_var_show, spk_var_store); | |
77 | static struct kobj_attribute punct_attribute = | |
78 | __ATTR(punct, USER_RW, spk_var_show, spk_var_store); | |
79 | static struct kobj_attribute rate_attribute = | |
80 | __ATTR(rate, USER_RW, spk_var_show, spk_var_store); | |
81 | static struct kobj_attribute tone_attribute = | |
82 | __ATTR(tone, USER_RW, spk_var_show, spk_var_store); | |
83 | static struct kobj_attribute voice_attribute = | |
84 | __ATTR(voice, USER_RW, spk_var_show, spk_var_store); | |
85 | static struct kobj_attribute vol_attribute = | |
86 | __ATTR(vol, USER_RW, spk_var_show, spk_var_store); | |
87 | ||
88 | static struct kobj_attribute delay_time_attribute = | |
89 | __ATTR(delay_time, ROOT_W, spk_var_show, spk_var_store); | |
90 | static struct kobj_attribute direct_attribute = | |
91 | __ATTR(direct, USER_RW, spk_var_show, spk_var_store); | |
92 | static struct kobj_attribute full_time_attribute = | |
93 | __ATTR(full_time, ROOT_W, spk_var_show, spk_var_store); | |
94 | static struct kobj_attribute jiffy_delta_attribute = | |
95 | __ATTR(jiffy_delta, ROOT_W, spk_var_show, spk_var_store); | |
96 | static struct kobj_attribute trigger_time_attribute = | |
97 | __ATTR(trigger_time, ROOT_W, 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 | &freq_attribute.attr, | |
107 | &pitch_attribute.attr, | |
108 | &punct_attribute.attr, | |
109 | &rate_attribute.attr, | |
110 | &tone_attribute.attr, | |
111 | &voice_attribute.attr, | |
112 | &vol_attribute.attr, | |
113 | &delay_time_attribute.attr, | |
114 | &direct_attribute.attr, | |
115 | &full_time_attribute.attr, | |
116 | &jiffy_delta_attribute.attr, | |
117 | &trigger_time_attribute.attr, | |
118 | NULL, /* need to NULL terminate the list of attributes */ | |
119 | }; | |
120 | ||
121 | static struct spk_synth synth_dtlk = { | |
122 | .name = "dtlk", | |
123 | .version = DRV_VERSION, | |
124 | .long_name = "DoubleTalk PC", | |
125 | .init = "\x01@\x01\x31y", | |
126 | .procspeech = PROCSPEECH, | |
127 | .clear = SYNTH_CLEAR, | |
128 | .delay = 500, | |
129 | .trigger = 30, | |
130 | .jiffies = 50, | |
131 | .full = 1000, | |
132 | .startup = SYNTH_START, | |
133 | .checkval = SYNTH_CHECK, | |
134 | .vars = vars, | |
135 | .probe = synth_probe, | |
136 | .release = dtlk_release, | |
137 | .synth_immediate = synth_immediate, | |
138 | .catch_up = do_catch_up, | |
139 | .flush = synth_flush, | |
140 | .is_alive = spk_synth_is_alive_nop, | |
141 | .synth_adjust = NULL, | |
142 | .read_buff_add = NULL, | |
143 | .get_index = spk_serial_in_nowait, | |
144 | .indexing = { | |
145 | .command = "\x01%di", | |
146 | .lowindex = 1, | |
147 | .highindex = 5, | |
148 | .currindex = 1, | |
149 | }, | |
150 | .attributes = { | |
151 | .attrs = synth_attrs, | |
152 | .name = "dtlk", | |
153 | }, | |
154 | }; | |
155 | ||
2c9e0cb0 CB |
156 | static inline bool synth_readable(void) |
157 | { | |
158 | synth_status = inb_p(speakup_info.port_tts + UART_RX); | |
159 | return (synth_status & TTS_READABLE) != 0; | |
160 | } | |
161 | ||
162 | static inline bool synth_writable(void) | |
163 | { | |
164 | synth_status = inb_p(speakup_info.port_tts + UART_RX); | |
165 | return (synth_status & TTS_WRITABLE) != 0; | |
166 | } | |
167 | ||
168 | static inline bool synth_full(void) | |
169 | { | |
170 | synth_status = inb_p(speakup_info.port_tts + UART_RX); | |
171 | return (synth_status & TTS_ALMOST_FULL) != 0; | |
172 | } | |
173 | ||
c6e3fd22 WH |
174 | static void spk_out(const char ch) |
175 | { | |
176 | int timeout = SPK_XMITR_TIMEOUT; | |
2c9e0cb0 | 177 | while (!synth_writable()) { |
c6e3fd22 WH |
178 | if (!--timeout) |
179 | break; | |
180 | udelay(1); | |
181 | } | |
182 | outb_p(ch, speakup_info.port_tts); | |
183 | timeout = SPK_XMITR_TIMEOUT; | |
2c9e0cb0 | 184 | while (synth_writable()) { |
c6e3fd22 WH |
185 | if (!--timeout) |
186 | break; | |
187 | udelay(1); | |
188 | } | |
189 | } | |
190 | ||
191 | static void do_catch_up(struct spk_synth *synth) | |
192 | { | |
193 | u_char ch; | |
194 | unsigned long flags; | |
195 | unsigned long jiff_max; | |
196 | struct var_t *jiffy_delta; | |
197 | struct var_t *delay_time; | |
198 | int jiffy_delta_val; | |
199 | int delay_time_val; | |
200 | ||
201 | jiffy_delta = get_var(JIFFY); | |
202 | delay_time = get_var(DELAY); | |
203 | spk_lock(flags); | |
204 | jiffy_delta_val = jiffy_delta->u.n.value; | |
205 | spk_unlock(flags); | |
206 | jiff_max = jiffies + jiffy_delta_val; | |
207 | while (!kthread_should_stop()) { | |
208 | spk_lock(flags); | |
209 | if (speakup_info.flushing) { | |
210 | speakup_info.flushing = 0; | |
211 | spk_unlock(flags); | |
212 | synth->flush(synth); | |
213 | continue; | |
214 | } | |
215 | if (synth_buffer_empty()) { | |
216 | spk_unlock(flags); | |
217 | break; | |
218 | } | |
219 | set_current_state(TASK_INTERRUPTIBLE); | |
220 | delay_time_val = delay_time->u.n.value; | |
221 | spk_unlock(flags); | |
222 | if (synth_full()) { | |
223 | schedule_timeout(msecs_to_jiffies(delay_time_val)); | |
224 | continue; | |
225 | } | |
226 | set_current_state(TASK_RUNNING); | |
227 | spk_lock(flags); | |
228 | ch = synth_buffer_getc(); | |
229 | spk_unlock(flags); | |
230 | if (ch == '\n') | |
231 | ch = PROCSPEECH; | |
232 | spk_out(ch); | |
233 | if ((jiffies >= jiff_max) && (ch == SPACE)) { | |
234 | spk_out(PROCSPEECH); | |
235 | spk_lock(flags); | |
236 | delay_time_val = delay_time->u.n.value; | |
237 | jiffy_delta_val = jiffy_delta->u.n.value; | |
238 | spk_unlock(flags); | |
239 | schedule_timeout(msecs_to_jiffies(delay_time_val)); | |
240 | jiff_max = jiffies + jiffy_delta_val; | |
241 | } | |
242 | } | |
243 | spk_out(PROCSPEECH); | |
244 | } | |
245 | ||
246 | static const char *synth_immediate(struct spk_synth *synth, const char *buf) | |
247 | { | |
248 | u_char ch; | |
249 | while ((ch = (u_char)*buf)) { | |
250 | if (synth_full()) | |
251 | return buf; | |
252 | if (ch == '\n') | |
253 | ch = PROCSPEECH; | |
254 | spk_out(ch); | |
255 | buf++; | |
256 | } | |
257 | return 0; | |
258 | } | |
259 | ||
260 | static void synth_flush(struct spk_synth *synth) | |
261 | { | |
262 | outb_p(SYNTH_CLEAR, speakup_info.port_tts); | |
2c9e0cb0 | 263 | while (synth_writable()) |
c6e3fd22 WH |
264 | cpu_relax(); |
265 | } | |
266 | ||
267 | static char synth_read_tts(void) | |
268 | { | |
269 | u_char ch; | |
2c9e0cb0 | 270 | while (!synth_readable()) |
c6e3fd22 WH |
271 | cpu_relax(); |
272 | ch = synth_status & 0x7f; | |
273 | outb_p(ch, speakup_info.port_tts); | |
2c9e0cb0 | 274 | while (synth_readable()) |
c6e3fd22 WH |
275 | cpu_relax(); |
276 | return (char) ch; | |
277 | } | |
278 | ||
279 | /* interrogate the DoubleTalk PC and return its settings */ | |
280 | static struct synth_settings *synth_interrogate(struct spk_synth *synth) | |
281 | { | |
282 | u_char *t; | |
283 | static char buf[sizeof(struct synth_settings) + 1]; | |
284 | int total, i; | |
285 | static struct synth_settings status; | |
286 | synth_immediate(synth, "\x18\x01?"); | |
287 | for (total = 0, i = 0; i < 50; i++) { | |
288 | buf[total] = synth_read_tts(); | |
289 | if (total > 2 && buf[total] == 0x7f) | |
290 | break; | |
291 | if (total < sizeof(struct synth_settings)) | |
292 | total++; | |
293 | } | |
294 | t = buf; | |
295 | /* serial number is little endian */ | |
296 | status.serial_number = t[0] + t[1]*256; | |
297 | t += 2; | |
298 | for (i = 0; *t != '\r'; t++) { | |
299 | status.rom_version[i] = *t; | |
300 | if (i < sizeof(status.rom_version)-1) | |
301 | i++; | |
302 | } | |
303 | status.rom_version[i] = 0; | |
304 | t++; | |
305 | status.mode = *t++; | |
306 | status.punc_level = *t++; | |
307 | status.formant_freq = *t++; | |
308 | status.pitch = *t++; | |
309 | status.speed = *t++; | |
310 | status.volume = *t++; | |
311 | status.tone = *t++; | |
312 | status.expression = *t++; | |
313 | status.ext_dict_loaded = *t++; | |
314 | status.ext_dict_status = *t++; | |
315 | status.free_ram = *t++; | |
316 | status.articulation = *t++; | |
317 | status.reverb = *t++; | |
318 | status.eob = *t++; | |
319 | return &status; | |
320 | } | |
321 | ||
322 | static int synth_probe(struct spk_synth *synth) | |
323 | { | |
324 | unsigned int port_val = 0; | |
325 | int i = 0; | |
326 | struct synth_settings *sp; | |
327 | pr_info("Probing for DoubleTalk.\n"); | |
328 | if (port_forced) { | |
329 | speakup_info.port_tts = port_forced; | |
330 | pr_info("probe forced to %x by kernel command line\n", | |
331 | speakup_info.port_tts); | |
332 | if ((port_forced & 0xf) != 0xf) | |
333 | pr_info("warning: port base should probably end with f\n"); | |
334 | if (synth_request_region(speakup_info.port_tts-1, | |
335 | SYNTH_IO_EXTENT)) { | |
336 | pr_warn("sorry, port already reserved\n"); | |
337 | return -EBUSY; | |
338 | } | |
339 | port_val = inw(speakup_info.port_tts-1); | |
340 | synth_lpc = speakup_info.port_tts-1; | |
341 | } else { | |
342 | for (i = 0; synth_portlist[i]; i++) { | |
343 | if (synth_request_region(synth_portlist[i], | |
344 | SYNTH_IO_EXTENT)) | |
345 | continue; | |
346 | port_val = inw(synth_portlist[i]) & 0xfbff; | |
347 | if (port_val == 0x107f) { | |
348 | synth_lpc = synth_portlist[i]; | |
349 | speakup_info.port_tts = synth_lpc+1; | |
350 | break; | |
351 | } | |
352 | synth_release_region(synth_portlist[i], | |
353 | SYNTH_IO_EXTENT); | |
354 | } | |
355 | } | |
356 | port_val &= 0xfbff; | |
357 | if (port_val != 0x107f) { | |
358 | pr_info("DoubleTalk PC: not found\n"); | |
359 | synth_release_region(synth_lpc, SYNTH_IO_EXTENT); | |
360 | return -ENODEV; | |
361 | } | |
362 | while (inw_p(synth_lpc) != 0x147f) | |
363 | cpu_relax(); /* wait until it's ready */ | |
364 | sp = synth_interrogate(synth); | |
365 | pr_info("%s: %03x-%03x, ROM ver %s, s/n %u, driver: %s\n", | |
366 | synth->long_name, synth_lpc, synth_lpc+SYNTH_IO_EXTENT - 1, | |
367 | sp->rom_version, sp->serial_number, synth->version); | |
368 | synth->alive = 1; | |
369 | return 0; | |
370 | } | |
371 | ||
372 | static void dtlk_release(void) | |
373 | { | |
374 | if (speakup_info.port_tts) | |
375 | synth_release_region(speakup_info.port_tts-1, SYNTH_IO_EXTENT); | |
376 | speakup_info.port_tts = 0; | |
377 | } | |
378 | ||
379 | module_param_named(port, port_forced, int, S_IRUGO); | |
380 | module_param_named(start, synth_dtlk.startup, short, S_IRUGO); | |
381 | ||
382 | MODULE_PARM_DESC(port, "Set the port for the synthesizer (override probing)."); | |
383 | MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded."); | |
384 | ||
385 | static int __init dtlk_init(void) | |
386 | { | |
387 | return synth_add(&synth_dtlk); | |
388 | } | |
389 | ||
390 | static void __exit dtlk_exit(void) | |
391 | { | |
392 | synth_remove(&synth_dtlk); | |
393 | } | |
394 | ||
395 | module_init(dtlk_init); | |
396 | module_exit(dtlk_exit); | |
397 | MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>"); | |
398 | MODULE_AUTHOR("David Borowski"); | |
399 | MODULE_DESCRIPTION("Speakup support for DoubleTalk PC synthesizers"); | |
400 | MODULE_LICENSE("GPL"); | |
401 | MODULE_VERSION(DRV_VERSION); | |
402 |