1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * originally written by: Kirk Reiser <kirk@braille.uwo.ca>
4  * this version considerably modified by David Borowski, david575@rogers.com
5  *
6  * Copyright (C) 1998-99  Kirk Reiser.
7  * Copyright (C) 2003 David Borowski.
8  *
9  * specificly written as a driver for the speakup screenreview
10  * s not a general device driver.
11  */
12 #include "spk_priv.h"
13 #include "speakup.h"
14 
15 #define DRV_VERSION "2.11"
16 #define SYNTH_CLEAR 0x18 /* flush synth buffer */
17 #define PROCSPEECH '\r' /* start synth processing speech char */
18 
19 static int synth_probe(struct spk_synth *synth);
20 static void synth_flush(struct spk_synth *synth);
21 
22 static struct var_t vars[] = {
23 	{ CAPS_START, .u.s = {"\x05[f99]" } },
24 	{ CAPS_STOP, .u.s = {"\x05[f80]" } },
25 	{ RATE, .u.n = {"\x05[r%d]", 10, 0, 20, 100, -10, NULL } },
26 	{ PITCH, .u.n = {"\x05[f%d]", 80, 39, 4500, 0, 0, NULL } },
27 	{ VOL, .u.n = {"\x05[g%d]", 21, 0, 40, 0, 0, NULL } },
28 	{ TONE, .u.n = {"\x05[s%d]", 9, 0, 63, 0, 0, NULL } },
29 	{ PUNCT, .u.n = {"\x05[A%c]", 0, 0, 3, 0, 0, "nmsa" } },
30 	{ DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
31 	V_LAST_VAR
32 };
33 
34 /*
35  * These attributes will appear in /sys/accessibility/speakup/audptr.
36  */
37 static struct kobj_attribute caps_start_attribute =
38 	__ATTR(caps_start, 0644, spk_var_show, spk_var_store);
39 static struct kobj_attribute caps_stop_attribute =
40 	__ATTR(caps_stop, 0644, spk_var_show, spk_var_store);
41 static struct kobj_attribute pitch_attribute =
42 	__ATTR(pitch, 0644, spk_var_show, spk_var_store);
43 static struct kobj_attribute punct_attribute =
44 	__ATTR(punct, 0644, spk_var_show, spk_var_store);
45 static struct kobj_attribute rate_attribute =
46 	__ATTR(rate, 0644, spk_var_show, spk_var_store);
47 static struct kobj_attribute tone_attribute =
48 	__ATTR(tone, 0644, spk_var_show, spk_var_store);
49 static struct kobj_attribute vol_attribute =
50 	__ATTR(vol, 0644, spk_var_show, spk_var_store);
51 
52 static struct kobj_attribute delay_time_attribute =
53 	__ATTR(delay_time, 0644, spk_var_show, spk_var_store);
54 static struct kobj_attribute direct_attribute =
55 	__ATTR(direct, 0644, spk_var_show, spk_var_store);
56 static struct kobj_attribute full_time_attribute =
57 	__ATTR(full_time, 0644, spk_var_show, spk_var_store);
58 static struct kobj_attribute jiffy_delta_attribute =
59 	__ATTR(jiffy_delta, 0644, spk_var_show, spk_var_store);
60 static struct kobj_attribute trigger_time_attribute =
61 	__ATTR(trigger_time, 0644, spk_var_show, spk_var_store);
62 
63 /*
64  * Create a group of attributes so that we can create and destroy them all
65  * at once.
66  */
67 static struct attribute *synth_attrs[] = {
68 	&caps_start_attribute.attr,
69 	&caps_stop_attribute.attr,
70 	&pitch_attribute.attr,
71 	&punct_attribute.attr,
72 	&rate_attribute.attr,
73 	&tone_attribute.attr,
74 	&vol_attribute.attr,
75 	&delay_time_attribute.attr,
76 	&direct_attribute.attr,
77 	&full_time_attribute.attr,
78 	&jiffy_delta_attribute.attr,
79 	&trigger_time_attribute.attr,
80 	NULL,	/* need to NULL terminate the list of attributes */
81 };
82 
83 static struct spk_synth synth_audptr = {
84 	.name = "audptr",
85 	.version = DRV_VERSION,
86 	.long_name = "Audapter",
87 	.init = "\x05[D1]\x05[Ol]",
88 	.procspeech = PROCSPEECH,
89 	.clear = SYNTH_CLEAR,
90 	.delay = 400,
91 	.trigger = 50,
92 	.jiffies = 30,
93 	.full = 18000,
94 	.dev_name = SYNTH_DEFAULT_DEV,
95 	.startup = SYNTH_START,
96 	.checkval = SYNTH_CHECK,
97 	.vars = vars,
98 	.io_ops = &spk_ttyio_ops,
99 	.probe = synth_probe,
100 	.release = spk_ttyio_release,
101 	.synth_immediate = spk_ttyio_synth_immediate,
102 	.catch_up = spk_do_catch_up,
103 	.flush = synth_flush,
104 	.is_alive = spk_synth_is_alive_restart,
105 	.synth_adjust = NULL,
106 	.read_buff_add = NULL,
107 	.get_index = NULL,
108 	.indexing = {
109 		.command = NULL,
110 		.lowindex = 0,
111 		.highindex = 0,
112 		.currindex = 0,
113 	},
114 	.attributes = {
115 		.attrs = synth_attrs,
116 		.name = "audptr",
117 	},
118 };
119 
120 static void synth_flush(struct spk_synth *synth)
121 {
122 	synth->io_ops->flush_buffer(synth);
123 	synth->io_ops->send_xchar(synth, SYNTH_CLEAR);
124 	synth->io_ops->synth_out(synth, PROCSPEECH);
125 }
126 
127 static void synth_version(struct spk_synth *synth)
128 {
129 	unsigned i;
130 	char synth_id[33];
131 
132 	synth->synth_immediate(synth, "\x05[Q]");
133 	synth_id[0] = synth->io_ops->synth_in(synth);
134 	if (synth_id[0] != 'A')
135 		return;
136 
137 	for (i = 1; i < sizeof(synth_id) - 1; i++) {
138 		/* read version string from synth */
139 		synth_id[i] = synth->io_ops->synth_in(synth);
140 		if (synth_id[i] == '\n')
141 			break;
142 	}
143 	synth_id[i] = '\0';
144 	pr_info("%s version: %s", synth->long_name, synth_id);
145 }
146 
147 static int synth_probe(struct spk_synth *synth)
148 {
149 	int failed;
150 
151 	failed = spk_ttyio_synth_probe(synth);
152 	if (failed == 0)
153 		synth_version(synth);
154 	synth->alive = !failed;
155 	return 0;
156 }
157 
158 module_param_named(ser, synth_audptr.ser, int, 0444);
159 module_param_named(dev, synth_audptr.dev_name, charp, 0444);
160 module_param_named(start, synth_audptr.startup, short, 0444);
161 
162 MODULE_PARM_DESC(ser, "Set the serial port for the synthesizer (0-based).");
163 MODULE_PARM_DESC(dev, "Set the device e.g. ttyUSB0, for the synthesizer.");
164 MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
165 
166 module_spk_synth(synth_audptr);
167 
168 MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
169 MODULE_AUTHOR("David Borowski");
170 MODULE_DESCRIPTION("Speakup support for Audapter synthesizer");
171 MODULE_LICENSE("GPL");
172 MODULE_VERSION(DRV_VERSION);
173 
174