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24#include <linux/unistd.h>
25#include <linux/miscdevice.h>
26#include <linux/poll.h>
27#include <linux/sched.h>
28
29#include "spk_priv.h"
30#include "speakup.h"
31
32#define DRV_VERSION "2.6"
33#define SOFTSYNTH_MINOR 26
34#define PROCSPEECH 0x0d
35#define CLEAR_SYNTH 0x18
36
37static int softsynth_probe(struct spk_synth *synth);
38static void softsynth_release(void);
39static int softsynth_is_alive(struct spk_synth *synth);
40static unsigned char get_index(void);
41
42static struct miscdevice synth_device;
43static int init_pos;
44static int misc_registered;
45
46static struct var_t vars[] = {
47 { CAPS_START, .u.s = {"\x01+3p" } },
48 { CAPS_STOP, .u.s = {"\x01-3p" } },
49 { RATE, .u.n = {"\x01%ds", 2, 0, 9, 0, 0, NULL } },
50 { PITCH, .u.n = {"\x01%dp", 5, 0, 9, 0, 0, NULL } },
51 { VOL, .u.n = {"\x01%dv", 5, 0, 9, 0, 0, NULL } },
52 { TONE, .u.n = {"\x01%dx", 1, 0, 2, 0, 0, NULL } },
53 { PUNCT, .u.n = {"\x01%db", 0, 0, 2, 0, 0, NULL } },
54 { VOICE, .u.n = {"\x01%do", 0, 0, 7, 0, 0, NULL } },
55 { FREQUENCY, .u.n = {"\x01%df", 5, 0, 9, 0, 0, NULL } },
56 { DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
57 V_LAST_VAR
58};
59
60
61
62
63static struct kobj_attribute caps_start_attribute =
64 __ATTR(caps_start, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
65static struct kobj_attribute caps_stop_attribute =
66 __ATTR(caps_stop, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
67static struct kobj_attribute freq_attribute =
68 __ATTR(freq, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
69static struct kobj_attribute pitch_attribute =
70 __ATTR(pitch, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
71static struct kobj_attribute punct_attribute =
72 __ATTR(punct, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
73static struct kobj_attribute rate_attribute =
74 __ATTR(rate, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
75static struct kobj_attribute tone_attribute =
76 __ATTR(tone, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
77static struct kobj_attribute voice_attribute =
78 __ATTR(voice, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
79static struct kobj_attribute vol_attribute =
80 __ATTR(vol, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
81
82
83
84
85
86
87
88
89static struct kobj_attribute delay_time_attribute =
90 __ATTR(delay_time, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
91static struct kobj_attribute direct_attribute =
92 __ATTR(direct, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
93static struct kobj_attribute full_time_attribute =
94 __ATTR(full_time, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
95static struct kobj_attribute jiffy_delta_attribute =
96 __ATTR(jiffy_delta, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
97static struct kobj_attribute trigger_time_attribute =
98 __ATTR(trigger_time, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
99
100
101
102
103
104static struct attribute *synth_attrs[] = {
105 &caps_start_attribute.attr,
106 &caps_stop_attribute.attr,
107 &freq_attribute.attr,
108
109 &pitch_attribute.attr,
110 &punct_attribute.attr,
111 &rate_attribute.attr,
112 &tone_attribute.attr,
113 &voice_attribute.attr,
114 &vol_attribute.attr,
115 &delay_time_attribute.attr,
116 &direct_attribute.attr,
117 &full_time_attribute.attr,
118 &jiffy_delta_attribute.attr,
119 &trigger_time_attribute.attr,
120 NULL,
121};
122
123static struct spk_synth synth_soft = {
124 .name = "soft",
125 .version = DRV_VERSION,
126 .long_name = "software synth",
127 .init = "\01@\x01\x31y\n",
128 .procspeech = PROCSPEECH,
129 .delay = 0,
130 .trigger = 0,
131 .jiffies = 0,
132 .full = 0,
133 .startup = SYNTH_START,
134 .checkval = SYNTH_CHECK,
135 .vars = vars,
136 .probe = softsynth_probe,
137 .release = softsynth_release,
138 .synth_immediate = NULL,
139 .catch_up = NULL,
140 .flush = NULL,
141 .is_alive = softsynth_is_alive,
142 .synth_adjust = NULL,
143 .read_buff_add = NULL,
144 .get_index = get_index,
145 .indexing = {
146 .command = "\x01%di",
147 .lowindex = 1,
148 .highindex = 5,
149 .currindex = 1,
150 },
151 .attributes = {
152 .attrs = synth_attrs,
153 .name = "soft",
154 },
155};
156
157static char *get_initstring(void)
158{
159 static char buf[40];
160 char *cp;
161 struct var_t *var;
162
163 memset(buf, 0, sizeof(buf));
164 cp = buf;
165 var = synth_soft.vars;
166 while (var->var_id != MAXVARS) {
167 if (var->var_id != CAPS_START && var->var_id != CAPS_STOP
168 && var->var_id != DIRECT)
169 cp = cp + sprintf(cp, var->u.n.synth_fmt,
170 var->u.n.value);
171 var++;
172 }
173 cp = cp + sprintf(cp, "\n");
174 return buf;
175}
176
177static int softsynth_open(struct inode *inode, struct file *fp)
178{
179 unsigned long flags;
180
181
182 spin_lock_irqsave(&speakup_info.spinlock, flags);
183 if (synth_soft.alive) {
184 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
185 return -EBUSY;
186 }
187 synth_soft.alive = 1;
188 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
189 return 0;
190}
191
192static int softsynth_close(struct inode *inode, struct file *fp)
193{
194 unsigned long flags;
195
196 spin_lock_irqsave(&speakup_info.spinlock, flags);
197 synth_soft.alive = 0;
198 init_pos = 0;
199 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
200
201 speakup_start_ttys();
202 return 0;
203}
204
205static ssize_t softsynth_read(struct file *fp, char __user *buf, size_t count,
206 loff_t *pos)
207{
208 int chars_sent = 0;
209 char __user *cp;
210 char *init;
211 char ch;
212 int empty;
213 unsigned long flags;
214 DEFINE_WAIT(wait);
215
216 spin_lock_irqsave(&speakup_info.spinlock, flags);
217 while (1) {
218 prepare_to_wait(&speakup_event, &wait, TASK_INTERRUPTIBLE);
219 if (!synth_buffer_empty() || speakup_info.flushing)
220 break;
221 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
222 if (fp->f_flags & O_NONBLOCK) {
223 finish_wait(&speakup_event, &wait);
224 return -EAGAIN;
225 }
226 if (signal_pending(current)) {
227 finish_wait(&speakup_event, &wait);
228 return -ERESTARTSYS;
229 }
230 schedule();
231 spin_lock_irqsave(&speakup_info.spinlock, flags);
232 }
233 finish_wait(&speakup_event, &wait);
234
235 cp = buf;
236 init = get_initstring();
237 while (chars_sent < count) {
238 if (speakup_info.flushing) {
239 speakup_info.flushing = 0;
240 ch = '\x18';
241 } else if (synth_buffer_empty()) {
242 break;
243 } else if (init[init_pos]) {
244 ch = init[init_pos++];
245 } else {
246 ch = synth_buffer_getc();
247 }
248 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
249 if (copy_to_user(cp, &ch, 1))
250 return -EFAULT;
251 spin_lock_irqsave(&speakup_info.spinlock, flags);
252 chars_sent++;
253 cp++;
254 }
255 *pos += chars_sent;
256 empty = synth_buffer_empty();
257 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
258 if (empty) {
259 speakup_start_ttys();
260 *pos = 0;
261 }
262 return chars_sent;
263}
264
265static int last_index;
266
267static ssize_t softsynth_write(struct file *fp, const char __user *buf,
268 size_t count, loff_t *pos)
269{
270 unsigned long supplied_index = 0;
271 int converted;
272
273 converted = kstrtoul_from_user(buf, count, 0, &supplied_index);
274
275 if (converted < 0)
276 return converted;
277
278 last_index = supplied_index;
279 return count;
280}
281
282static unsigned int softsynth_poll(struct file *fp,
283 struct poll_table_struct *wait)
284{
285 unsigned long flags;
286 int ret = 0;
287
288 poll_wait(fp, &speakup_event, wait);
289
290 spin_lock_irqsave(&speakup_info.spinlock, flags);
291 if (!synth_buffer_empty() || speakup_info.flushing)
292 ret = POLLIN | POLLRDNORM;
293 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
294 return ret;
295}
296
297static unsigned char get_index(void)
298{
299 int rv;
300
301 rv = last_index;
302 last_index = 0;
303 return rv;
304}
305
306static const struct file_operations softsynth_fops = {
307 .owner = THIS_MODULE,
308 .poll = softsynth_poll,
309 .read = softsynth_read,
310 .write = softsynth_write,
311 .open = softsynth_open,
312 .release = softsynth_close,
313};
314
315
316static int softsynth_probe(struct spk_synth *synth)
317{
318
319 if (misc_registered != 0)
320 return 0;
321 memset(&synth_device, 0, sizeof(synth_device));
322 synth_device.minor = SOFTSYNTH_MINOR;
323 synth_device.name = "softsynth";
324 synth_device.fops = &softsynth_fops;
325 if (misc_register(&synth_device)) {
326 pr_warn("Couldn't initialize miscdevice /dev/softsynth.\n");
327 return -ENODEV;
328 }
329
330 misc_registered = 1;
331 pr_info("initialized device: /dev/softsynth, node (MAJOR 10, MINOR 26)\n");
332 return 0;
333}
334
335static void softsynth_release(void)
336{
337 misc_deregister(&synth_device);
338 misc_registered = 0;
339 pr_info("unregistered /dev/softsynth\n");
340}
341
342static int softsynth_is_alive(struct spk_synth *synth)
343{
344 if (synth_soft.alive)
345 return 1;
346 return 0;
347}
348
349module_param_named(start, synth_soft.startup, short, S_IRUGO);
350
351MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
352
353
354static int __init soft_init(void)
355{
356 return synth_add(&synth_soft);
357}
358
359static void __exit soft_exit(void)
360{
361 synth_remove(&synth_soft);
362}
363
364module_init(soft_init);
365module_exit(soft_exit);
366MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
367MODULE_DESCRIPTION("Speakup userspace software synthesizer support");
368MODULE_LICENSE("GPL");
369MODULE_VERSION(DRV_VERSION);
370
371
