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12#include <linux/unistd.h>
13#include <linux/miscdevice.h>
14#include <linux/poll.h>
15#include <linux/sched/signal.h>
16
17#include "spk_priv.h"
18#include "speakup.h"
19
20#define DRV_VERSION "2.6"
21#define SOFTSYNTH_MINOR 26
22#define SOFTSYNTHU_MINOR 27
23#define PROCSPEECH 0x0d
24#define CLEAR_SYNTH 0x18
25
26static int softsynth_probe(struct spk_synth *synth);
27static void softsynth_release(void);
28static int softsynth_is_alive(struct spk_synth *synth);
29static unsigned char get_index(struct spk_synth *synth);
30
31static struct miscdevice synth_device, synthu_device;
32static int init_pos;
33static int misc_registered;
34
35static struct var_t vars[] = {
36 { CAPS_START, .u.s = {"\x01+3p" } },
37 { CAPS_STOP, .u.s = {"\x01-3p" } },
38 { RATE, .u.n = {"\x01%ds", 2, 0, 9, 0, 0, NULL } },
39 { PITCH, .u.n = {"\x01%dp", 5, 0, 9, 0, 0, NULL } },
40 { VOL, .u.n = {"\x01%dv", 5, 0, 9, 0, 0, NULL } },
41 { TONE, .u.n = {"\x01%dx", 1, 0, 2, 0, 0, NULL } },
42 { PUNCT, .u.n = {"\x01%db", 0, 0, 2, 0, 0, NULL } },
43 { VOICE, .u.n = {"\x01%do", 0, 0, 7, 0, 0, NULL } },
44 { FREQUENCY, .u.n = {"\x01%df", 5, 0, 9, 0, 0, NULL } },
45 { DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
46 V_LAST_VAR
47};
48
49
50
51static struct kobj_attribute caps_start_attribute =
52 __ATTR(caps_start, 0644, spk_var_show, spk_var_store);
53static struct kobj_attribute caps_stop_attribute =
54 __ATTR(caps_stop, 0644, spk_var_show, spk_var_store);
55static struct kobj_attribute freq_attribute =
56 __ATTR(freq, 0644, spk_var_show, spk_var_store);
57static struct kobj_attribute pitch_attribute =
58 __ATTR(pitch, 0644, spk_var_show, spk_var_store);
59static struct kobj_attribute punct_attribute =
60 __ATTR(punct, 0644, spk_var_show, spk_var_store);
61static struct kobj_attribute rate_attribute =
62 __ATTR(rate, 0644, spk_var_show, spk_var_store);
63static struct kobj_attribute tone_attribute =
64 __ATTR(tone, 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
70
71
72
73
74
75
76
77static struct kobj_attribute delay_time_attribute =
78 __ATTR(delay_time, 0644, spk_var_show, spk_var_store);
79static struct kobj_attribute direct_attribute =
80 __ATTR(direct, 0644, spk_var_show, spk_var_store);
81static struct kobj_attribute full_time_attribute =
82 __ATTR(full_time, 0644, spk_var_show, spk_var_store);
83static struct kobj_attribute jiffy_delta_attribute =
84 __ATTR(jiffy_delta, 0644, spk_var_show, spk_var_store);
85static struct kobj_attribute trigger_time_attribute =
86 __ATTR(trigger_time, 0644, spk_var_show, spk_var_store);
87
88
89
90
91
92static struct attribute *synth_attrs[] = {
93 &caps_start_attribute.attr,
94 &caps_stop_attribute.attr,
95 &freq_attribute.attr,
96
97 &pitch_attribute.attr,
98 &punct_attribute.attr,
99 &rate_attribute.attr,
100 &tone_attribute.attr,
101 &voice_attribute.attr,
102 &vol_attribute.attr,
103 &delay_time_attribute.attr,
104 &direct_attribute.attr,
105 &full_time_attribute.attr,
106 &jiffy_delta_attribute.attr,
107 &trigger_time_attribute.attr,
108 NULL,
109};
110
111static struct spk_synth synth_soft = {
112 .name = "soft",
113 .version = DRV_VERSION,
114 .long_name = "software synth",
115 .init = "\01@\x01\x31y\n",
116 .procspeech = PROCSPEECH,
117 .delay = 0,
118 .trigger = 0,
119 .jiffies = 0,
120 .full = 0,
121 .startup = SYNTH_START,
122 .checkval = SYNTH_CHECK,
123 .vars = vars,
124 .io_ops = NULL,
125 .probe = softsynth_probe,
126 .release = softsynth_release,
127 .synth_immediate = NULL,
128 .catch_up = NULL,
129 .flush = NULL,
130 .is_alive = softsynth_is_alive,
131 .synth_adjust = NULL,
132 .read_buff_add = NULL,
133 .get_index = get_index,
134 .indexing = {
135 .command = "\x01%di",
136 .lowindex = 1,
137 .highindex = 5,
138 .currindex = 1,
139 },
140 .attributes = {
141 .attrs = synth_attrs,
142 .name = "soft",
143 },
144};
145
146static char *get_initstring(void)
147{
148 static char buf[40];
149 char *cp;
150 struct var_t *var;
151
152 memset(buf, 0, sizeof(buf));
153 cp = buf;
154 var = synth_soft.vars;
155 while (var->var_id != MAXVARS) {
156 if (var->var_id != CAPS_START && var->var_id != CAPS_STOP &&
157 var->var_id != DIRECT)
158 cp = cp + sprintf(cp, var->u.n.synth_fmt,
159 var->u.n.value);
160 var++;
161 }
162 cp = cp + sprintf(cp, "\n");
163 return buf;
164}
165
166static int softsynth_open(struct inode *inode, struct file *fp)
167{
168 unsigned long flags;
169
170
171 spin_lock_irqsave(&speakup_info.spinlock, flags);
172 if (synth_soft.alive) {
173 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
174 return -EBUSY;
175 }
176 synth_soft.alive = 1;
177 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
178 return 0;
179}
180
181static int softsynth_close(struct inode *inode, struct file *fp)
182{
183 unsigned long flags;
184
185 spin_lock_irqsave(&speakup_info.spinlock, flags);
186 synth_soft.alive = 0;
187 init_pos = 0;
188 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
189
190 speakup_start_ttys();
191 return 0;
192}
193
194static ssize_t softsynthx_read(struct file *fp, char __user *buf, size_t count,
195 loff_t *pos, int unicode)
196{
197 int chars_sent = 0;
198 char __user *cp;
199 char *init;
200 u16 ch;
201 int empty;
202 unsigned long flags;
203 DEFINE_WAIT(wait);
204
205 spin_lock_irqsave(&speakup_info.spinlock, flags);
206 while (1) {
207 prepare_to_wait(&speakup_event, &wait, TASK_INTERRUPTIBLE);
208 if (!unicode)
209 synth_buffer_skip_nonlatin1();
210 if (!synth_buffer_empty() || speakup_info.flushing)
211 break;
212 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
213 if (fp->f_flags & O_NONBLOCK) {
214 finish_wait(&speakup_event, &wait);
215 return -EAGAIN;
216 }
217 if (signal_pending(current)) {
218 finish_wait(&speakup_event, &wait);
219 return -ERESTARTSYS;
220 }
221 schedule();
222 spin_lock_irqsave(&speakup_info.spinlock, flags);
223 }
224 finish_wait(&speakup_event, &wait);
225
226 cp = buf;
227 init = get_initstring();
228
229
230 while (chars_sent <= count - 3) {
231 if (speakup_info.flushing) {
232 speakup_info.flushing = 0;
233 ch = '\x18';
234 } else if (init[init_pos]) {
235 ch = init[init_pos++];
236 } else {
237 if (!unicode)
238 synth_buffer_skip_nonlatin1();
239 if (synth_buffer_empty())
240 break;
241 ch = synth_buffer_getc();
242 }
243 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
244
245 if ((!unicode && ch < 0x100) || (unicode && ch < 0x80)) {
246 u_char c = ch;
247
248 if (copy_to_user(cp, &c, 1))
249 return -EFAULT;
250
251 chars_sent++;
252 cp++;
253 } else if (unicode && ch < 0x800) {
254 u_char s[2] = {
255 0xc0 | (ch >> 6),
256 0x80 | (ch & 0x3f)
257 };
258
259 if (copy_to_user(cp, s, sizeof(s)))
260 return -EFAULT;
261
262 chars_sent += sizeof(s);
263 cp += sizeof(s);
264 } else if (unicode) {
265 u_char s[3] = {
266 0xe0 | (ch >> 12),
267 0x80 | ((ch >> 6) & 0x3f),
268 0x80 | (ch & 0x3f)
269 };
270
271 if (copy_to_user(cp, s, sizeof(s)))
272 return -EFAULT;
273
274 chars_sent += sizeof(s);
275 cp += sizeof(s);
276 }
277
278 spin_lock_irqsave(&speakup_info.spinlock, flags);
279 }
280 *pos += chars_sent;
281 empty = synth_buffer_empty();
282 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
283 if (empty) {
284 speakup_start_ttys();
285 *pos = 0;
286 }
287 return chars_sent;
288}
289
290static ssize_t softsynth_read(struct file *fp, char __user *buf, size_t count,
291 loff_t *pos)
292{
293 return softsynthx_read(fp, buf, count, pos, 0);
294}
295
296static ssize_t softsynthu_read(struct file *fp, char __user *buf, size_t count,
297 loff_t *pos)
298{
299 return softsynthx_read(fp, buf, count, pos, 1);
300}
301
302static int last_index;
303
304static ssize_t softsynth_write(struct file *fp, const char __user *buf,
305 size_t count, loff_t *pos)
306{
307 unsigned long supplied_index = 0;
308 int converted;
309
310 converted = kstrtoul_from_user(buf, count, 0, &supplied_index);
311
312 if (converted < 0)
313 return converted;
314
315 last_index = supplied_index;
316 return count;
317}
318
319static __poll_t softsynth_poll(struct file *fp, struct poll_table_struct *wait)
320{
321 unsigned long flags;
322 __poll_t ret = 0;
323
324 poll_wait(fp, &speakup_event, wait);
325
326 spin_lock_irqsave(&speakup_info.spinlock, flags);
327 if (!synth_buffer_empty() || speakup_info.flushing)
328 ret = EPOLLIN | EPOLLRDNORM;
329 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
330 return ret;
331}
332
333static unsigned char get_index(struct spk_synth *synth)
334{
335 int rv;
336
337 rv = last_index;
338 last_index = 0;
339 return rv;
340}
341
342static const struct file_operations softsynth_fops = {
343 .owner = THIS_MODULE,
344 .poll = softsynth_poll,
345 .read = softsynth_read,
346 .write = softsynth_write,
347 .open = softsynth_open,
348 .release = softsynth_close,
349};
350
351static const struct file_operations softsynthu_fops = {
352 .owner = THIS_MODULE,
353 .poll = softsynth_poll,
354 .read = softsynthu_read,
355 .write = softsynth_write,
356 .open = softsynth_open,
357 .release = softsynth_close,
358};
359
360static int softsynth_probe(struct spk_synth *synth)
361{
362 if (misc_registered != 0)
363 return 0;
364 memset(&synth_device, 0, sizeof(synth_device));
365 synth_device.minor = SOFTSYNTH_MINOR;
366 synth_device.name = "softsynth";
367 synth_device.fops = &softsynth_fops;
368 if (misc_register(&synth_device)) {
369 pr_warn("Couldn't initialize miscdevice /dev/softsynth.\n");
370 return -ENODEV;
371 }
372
373 memset(&synthu_device, 0, sizeof(synthu_device));
374 synthu_device.minor = SOFTSYNTHU_MINOR;
375 synthu_device.name = "softsynthu";
376 synthu_device.fops = &softsynthu_fops;
377 if (misc_register(&synthu_device)) {
378 pr_warn("Couldn't initialize miscdevice /dev/softsynth.\n");
379 return -ENODEV;
380 }
381
382 misc_registered = 1;
383 pr_info("initialized device: /dev/softsynth, node (MAJOR 10, MINOR 26)\n");
384 pr_info("initialized device: /dev/softsynthu, node (MAJOR 10, MINOR 27)\n");
385 return 0;
386}
387
388static void softsynth_release(void)
389{
390 misc_deregister(&synth_device);
391 misc_deregister(&synthu_device);
392 misc_registered = 0;
393 pr_info("unregistered /dev/softsynth\n");
394 pr_info("unregistered /dev/softsynthu\n");
395}
396
397static int softsynth_is_alive(struct spk_synth *synth)
398{
399 if (synth_soft.alive)
400 return 1;
401 return 0;
402}
403
404module_param_named(start, synth_soft.startup, short, 0444);
405
406MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
407
408module_spk_synth(synth_soft);
409
410MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
411MODULE_DESCRIPTION("Speakup userspace software synthesizer support");
412MODULE_LICENSE("GPL");
413MODULE_VERSION(DRV_VERSION);
414
