drivers/accessibility/speakup/speakup_apollo.c

   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  * this code is specifically written as a driver for the speakup screenreview
  10  * package and is not a general device driver.
  11  */
  12 #include <linux/jiffies.h>
  13 #include <linux/sched.h>
  14 #include <linux/timer.h>
  15 #include <linux/kthread.h>
  16 #include <linux/serial_reg.h>   /* for UART_MCR* constants */
  17
  18 #include "spk_priv.h"
  19 #include "speakup.h"
  20
  21 #define DRV_VERSION "2.21"
  22 #define SYNTH_CLEAR 0x18
  23 #define PROCSPEECH '\r'
  24
  25 static void do_catch_up(struct spk_synth *synth);
  26
  27
  28
  29 enum default_vars_id {
  30         CAPS_START_ID = 0, CAPS_STOP_ID,
  31         RATE_ID, PITCH_ID,
  32         VOL_ID, VOICE_ID, LANG_ID,
  33         DIRECT_ID, V_LAST_VAR_ID,
  34         NB_ID
  35 };
  36
  37
  38
  39
  40 static struct var_t vars[NB_ID] = {
  41         [CAPS_START_ID] = { CAPS_START, .u.s = {"cap, " } },
  42         [CAPS_STOP_ID] = { CAPS_STOP, .u.s = {"" } },
  43         [RATE_ID] = { RATE, .u.n = {"@W%d", 6, 1, 9, 0, 0, NULL } },
  44         [PITCH_ID] = { PITCH, .u.n = {"@F%x", 10, 0, 15, 0, 0, NULL } },
  45         [VOL_ID] = { VOL, .u.n = {"@A%x", 10, 0, 15, 0, 0, NULL } },
  46         [VOICE_ID] = { VOICE, .u.n = {"@V%d", 1, 1, 6, 0, 0, NULL } },
  47         [LANG_ID] = { LANG, .u.n = {"@=%d,", 1, 1, 4, 0, 0, NULL } },
  48         [DIRECT_ID] = { DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
  49         V_LAST_VAR
  50 };
  51
  52 /*
  53  * These attributes will appear in /sys/accessibility/speakup/apollo.
  54  */
  55 static struct kobj_attribute caps_start_attribute =
  56         __ATTR(caps_start, 0644, spk_var_show, spk_var_store);
  57 static struct kobj_attribute caps_stop_attribute =
  58         __ATTR(caps_stop, 0644, spk_var_show, spk_var_store);
  59 static struct kobj_attribute lang_attribute =
  60         __ATTR(lang, 0644, spk_var_show, spk_var_store);
  61 static struct kobj_attribute pitch_attribute =
  62         __ATTR(pitch, 0644, spk_var_show, spk_var_store);
  63 static struct kobj_attribute rate_attribute =
  64         __ATTR(rate, 0644, spk_var_show, spk_var_store);
  65 static struct kobj_attribute voice_attribute =
  66         __ATTR(voice, 0644, spk_var_show, spk_var_store);
  67 static struct kobj_attribute vol_attribute =
  68         __ATTR(vol, 0644, spk_var_show, spk_var_store);
  69
  70 static struct kobj_attribute delay_time_attribute =
  71         __ATTR(delay_time, 0644, spk_var_show, spk_var_store);
  72 static struct kobj_attribute direct_attribute =
  73         __ATTR(direct, 0644, spk_var_show, spk_var_store);
  74 static struct kobj_attribute full_time_attribute =
  75         __ATTR(full_time, 0644, spk_var_show, spk_var_store);
  76 static struct kobj_attribute jiffy_delta_attribute =
  77         __ATTR(jiffy_delta, 0644, spk_var_show, spk_var_store);
  78 static struct kobj_attribute trigger_time_attribute =
  79         __ATTR(trigger_time, 0644, spk_var_show, spk_var_store);
  80
  81 /*
  82  * Create a group of attributes so that we can create and destroy them all
  83  * at once.
  84  */
  85 static struct attribute *synth_attrs[] = {
  86         &caps_start_attribute.attr,
  87         &caps_stop_attribute.attr,
  88         &lang_attribute.attr,
  89         &pitch_attribute.attr,
  90         &rate_attribute.attr,
  91         &voice_attribute.attr,
  92         &vol_attribute.attr,
  93         &delay_time_attribute.attr,
  94         &direct_attribute.attr,
  95         &full_time_attribute.attr,
  96         &jiffy_delta_attribute.attr,
  97         &trigger_time_attribute.attr,
  98         NULL,   /* need to NULL terminate the list of attributes */
  99 };
 100
 101 static struct spk_synth synth_apollo = {
 102         .name = "apollo",
 103         .version = DRV_VERSION,
 104         .long_name = "Apollo",
 105         .init = "@R3@D0@K1\r",
 106         .procspeech = PROCSPEECH,
 107         .clear = SYNTH_CLEAR,
 108         .delay = 500,
 109         .trigger = 50,
 110         .jiffies = 50,
 111         .full = 40000,
 112         .dev_name = SYNTH_DEFAULT_DEV,
 113         .startup = SYNTH_START,
 114         .checkval = SYNTH_CHECK,
 115         .vars = vars,
 116         .io_ops = &spk_ttyio_ops,
 117         .probe = spk_ttyio_synth_probe,
 118         .release = spk_ttyio_release,
 119         .synth_immediate = spk_ttyio_synth_immediate,
 120         .catch_up = do_catch_up,
 121         .flush = spk_synth_flush,
 122         .is_alive = spk_synth_is_alive_restart,
 123         .synth_adjust = NULL,
 124         .read_buff_add = NULL,
 125         .get_index = NULL,
 126         .indexing = {
 127                 .command = NULL,
 128                 .lowindex = 0,
 129                 .highindex = 0,
 130                 .currindex = 0,
 131         },
 132         .attributes = {
 133                 .attrs = synth_attrs,
 134                 .name = "apollo",
 135         },
 136 };
 137
 138 static void do_catch_up(struct spk_synth *synth)
 139 {
 140         u_char ch;
 141         unsigned long flags;
 142         unsigned long jiff_max;
 143         struct var_t *jiffy_delta;
 144         struct var_t *delay_time;
 145         struct var_t *full_time;
 146         int full_time_val = 0;
 147         int delay_time_val = 0;
 148         int jiffy_delta_val = 0;
 149
 150         jiffy_delta = spk_get_var(JIFFY);
 151         delay_time = spk_get_var(DELAY);
 152         full_time = spk_get_var(FULL);
 153         spin_lock_irqsave(&speakup_info.spinlock, flags);
 154         jiffy_delta_val = jiffy_delta->u.n.value;
 155         spin_unlock_irqrestore(&speakup_info.spinlock, flags);
 156         jiff_max = jiffies + jiffy_delta_val;
 157
 158         while (!kthread_should_stop()) {
 159                 spin_lock_irqsave(&speakup_info.spinlock, flags);
 160                 jiffy_delta_val = jiffy_delta->u.n.value;
 161                 full_time_val = full_time->u.n.value;
 162                 delay_time_val = delay_time->u.n.value;
 163                 if (speakup_info.flushing) {
 164                         speakup_info.flushing = 0;
 165                         spin_unlock_irqrestore(&speakup_info.spinlock, flags);
 166                         synth->flush(synth);
 167                         continue;
 168                 }
 169                 synth_buffer_skip_nonlatin1();
 170                 if (synth_buffer_empty()) {
 171                         spin_unlock_irqrestore(&speakup_info.spinlock, flags);
 172                         break;
 173                 }
 174                 ch = synth_buffer_peek();
 175                 set_current_state(TASK_INTERRUPTIBLE);
 176                 full_time_val = full_time->u.n.value;
 177                 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
 178                 if (!synth->io_ops->synth_out(synth, ch)) {
 179                         synth->io_ops->tiocmset(synth, 0, UART_MCR_RTS);
 180                         synth->io_ops->tiocmset(synth, UART_MCR_RTS, 0);
 181                         schedule_timeout(msecs_to_jiffies(full_time_val));
 182                         continue;
 183                 }
 184                 if (time_after_eq(jiffies, jiff_max) && (ch == SPACE)) {
 185                         spin_lock_irqsave(&speakup_info.spinlock, flags);
 186                         jiffy_delta_val = jiffy_delta->u.n.value;
 187                         full_time_val = full_time->u.n.value;
 188                         delay_time_val = delay_time->u.n.value;
 189                         spin_unlock_irqrestore(&speakup_info.spinlock, flags);
 190                         if (synth->io_ops->synth_out(synth, synth->procspeech))
 191                                 schedule_timeout(msecs_to_jiffies
 192                                                  (delay_time_val));
 193                         else
 194                                 schedule_timeout(msecs_to_jiffies
 195                                                  (full_time_val));
 196                         jiff_max = jiffies + jiffy_delta_val;
 197                 }
 198                 set_current_state(TASK_RUNNING);
 199                 spin_lock_irqsave(&speakup_info.spinlock, flags);
 200                 synth_buffer_getc();
 201                 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
 202         }
 203         synth->io_ops->synth_out(synth, PROCSPEECH);
 204 }
 205
 206 module_param_named(ser, synth_apollo.ser, int, 0444);
 207 module_param_named(dev, synth_apollo.dev_name, charp, 0444);
 208 module_param_named(start, synth_apollo.startup, short, 0444);
 209 module_param_named(rate, vars[RATE_ID].u.n.default_val, int, 0444);
 210 module_param_named(pitch, vars[PITCH_ID].u.n.default_val, int, 0444);
 211 module_param_named(vol, vars[VOL_ID].u.n.default_val, int, 0444);
 212 module_param_named(voice, vars[VOICE_ID].u.n.default_val, int, 0444);
 213 module_param_named(lang, vars[LANG_ID].u.n.default_val, int, 0444);
 214 module_param_named(direct, vars[DIRECT_ID].u.n.default_val, int, 0444);
 215
 216
 217 MODULE_PARM_DESC(ser, "Set the serial port for the synthesizer (0-based).");
 218 MODULE_PARM_DESC(dev, "Set the device e.g. ttyUSB0, for the synthesizer.");
 219 MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
 220 MODULE_PARM_DESC(rate, "Set the rate variable on load.");
 221 MODULE_PARM_DESC(pitch, "Set the pitch variable on load.");
 222 MODULE_PARM_DESC(vol, "Set the vol variable on load.");
 223 MODULE_PARM_DESC(voice, "Set the voice variable on load.");
 224 MODULE_PARM_DESC(lang, "Set the lang variable on load.");
 225 MODULE_PARM_DESC(direct, "Set the direct variable on load.");
 226
 227
 228
 229 module_spk_synth(synth_apollo);
 230
 231 MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
 232 MODULE_AUTHOR("David Borowski");
 233 MODULE_DESCRIPTION("Speakup support for Apollo II synthesizer");
 234 MODULE_LICENSE("GPL");
 235 MODULE_VERSION(DRV_VERSION);
 236