kernel/drivers/staging/speakup/speakup_apollo.c

   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  * this code is specificly written as a driver for the speakup screenreview
  23  * package and is not a general device driver.
  24  */
  25 #include <linux/jiffies.h>
  26 #include <linux/sched.h>
  27 #include <linux/timer.h>
  28 #include <linux/kthread.h>
  29
  30 #include "spk_priv.h"
  31 #include "serialio.h"
  32 #include "speakup.h"
  33
  34 #define DRV_VERSION "2.21"
  35 #define SYNTH_CLEAR 0x18
  36 #define PROCSPEECH '\r'
  37
  38 static void do_catch_up(struct spk_synth *synth);
  39
  40 static struct var_t vars[] = {
  41         { CAPS_START, .u.s = {"cap, " } },
  42         { CAPS_STOP, .u.s = {"" } },
  43         { RATE, .u.n = {"@W%d", 6, 1, 9, 0, 0, NULL } },
  44         { PITCH, .u.n = {"@F%x", 10, 0, 15, 0, 0, NULL } },
  45         { VOL, .u.n = {"@A%x", 10, 0, 15, 0, 0, NULL } },
  46         { VOICE, .u.n = {"@V%d", 1, 1, 6, 0, 0, NULL } },
  47         { LANG, .u.n = {"@=%d,", 1, 1, 4, 0, 0, NULL } },
  48         { 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, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
  57 static struct kobj_attribute caps_stop_attribute =
  58         __ATTR(caps_stop, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
  59 static struct kobj_attribute lang_attribute =
  60         __ATTR(lang, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
  61 static struct kobj_attribute pitch_attribute =
  62         __ATTR(pitch, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
  63 static struct kobj_attribute rate_attribute =
  64         __ATTR(rate, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
  65 static struct kobj_attribute voice_attribute =
  66         __ATTR(voice, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
  67 static struct kobj_attribute vol_attribute =
  68         __ATTR(vol, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
  69
  70 static struct kobj_attribute delay_time_attribute =
  71         __ATTR(delay_time, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
  72 static struct kobj_attribute direct_attribute =
  73         __ATTR(direct, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
  74 static struct kobj_attribute full_time_attribute =
  75         __ATTR(full_time, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
  76 static struct kobj_attribute jiffy_delta_attribute =
  77         __ATTR(jiffy_delta, S_IWUSR|S_IRUGO, spk_var_show, spk_var_store);
  78 static struct kobj_attribute trigger_time_attribute =
  79         __ATTR(trigger_time, S_IWUSR|S_IRUGO, 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         .startup = SYNTH_START,
 113         .checkval = SYNTH_CHECK,
 114         .vars = vars,
 115         .probe = spk_serial_synth_probe,
 116         .release = spk_serial_release,
 117         .synth_immediate = spk_synth_immediate,
 118         .catch_up = do_catch_up,
 119         .flush = spk_synth_flush,
 120         .is_alive = spk_synth_is_alive_restart,
 121         .synth_adjust = NULL,
 122         .read_buff_add = NULL,
 123         .get_index = NULL,
 124         .indexing = {
 125                 .command = NULL,
 126                 .lowindex = 0,
 127                 .highindex = 0,
 128                 .currindex = 0,
 129         },
 130         .attributes = {
 131                 .attrs = synth_attrs,
 132                 .name = "apollo",
 133         },
 134 };
 135
 136 static void do_catch_up(struct spk_synth *synth)
 137 {
 138         u_char ch;
 139         unsigned long flags;
 140         unsigned long jiff_max;
 141         struct var_t *jiffy_delta;
 142         struct var_t *delay_time;
 143         struct var_t *full_time;
 144         int full_time_val = 0;
 145         int delay_time_val = 0;
 146         int jiffy_delta_val = 0;
 147
 148         jiffy_delta = spk_get_var(JIFFY);
 149         delay_time = spk_get_var(DELAY);
 150         full_time = spk_get_var(FULL);
 151         spin_lock_irqsave(&speakup_info.spinlock, flags);
 152         jiffy_delta_val = jiffy_delta->u.n.value;
 153         spin_unlock_irqrestore(&speakup_info.spinlock, flags);
 154         jiff_max = jiffies + jiffy_delta_val;
 155
 156         while (!kthread_should_stop()) {
 157                 spin_lock_irqsave(&speakup_info.spinlock, flags);
 158                 jiffy_delta_val = jiffy_delta->u.n.value;
 159                 full_time_val = full_time->u.n.value;
 160                 delay_time_val = delay_time->u.n.value;
 161                 if (speakup_info.flushing) {
 162                         speakup_info.flushing = 0;
 163                         spin_unlock_irqrestore(&speakup_info.spinlock, flags);
 164                         synth->flush(synth);
 165                         continue;
 166                 }
 167                 if (synth_buffer_empty()) {
 168                         spin_unlock_irqrestore(&speakup_info.spinlock, flags);
 169                         break;
 170                 }
 171                 ch = synth_buffer_peek();
 172                 set_current_state(TASK_INTERRUPTIBLE);
 173                 full_time_val = full_time->u.n.value;
 174                 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
 175                 if (!spk_serial_out(ch)) {
 176                         outb(UART_MCR_DTR, speakup_info.port_tts + UART_MCR);
 177                         outb(UART_MCR_DTR | UART_MCR_RTS,
 178                                         speakup_info.port_tts + UART_MCR);
 179                         schedule_timeout(msecs_to_jiffies(full_time_val));
 180                         continue;
 181                 }
 182                 if (time_after_eq(jiffies, jiff_max) && (ch == SPACE)) {
 183                         spin_lock_irqsave(&speakup_info.spinlock, flags);
 184                         jiffy_delta_val = jiffy_delta->u.n.value;
 185                         full_time_val = full_time->u.n.value;
 186                         delay_time_val = delay_time->u.n.value;
 187                         spin_unlock_irqrestore(&speakup_info.spinlock, flags);
 188                         if (spk_serial_out(synth->procspeech))
 189                                 schedule_timeout(msecs_to_jiffies
 190                                                  (delay_time_val));
 191                         else
 192                                 schedule_timeout(msecs_to_jiffies
 193                                                  (full_time_val));
 194                         jiff_max = jiffies + jiffy_delta_val;
 195                 }
 196                 set_current_state(TASK_RUNNING);
 197                 spin_lock_irqsave(&speakup_info.spinlock, flags);
 198                 synth_buffer_getc();
 199                 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
 200         }
 201         spk_serial_out(PROCSPEECH);
 202 }
 203
 204 module_param_named(ser, synth_apollo.ser, int, S_IRUGO);
 205 module_param_named(start, synth_apollo.startup, short, S_IRUGO);
 206
 207 MODULE_PARM_DESC(ser, "Set the serial port for the synthesizer (0-based).");
 208 MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
 209
 210 module_spk_synth(synth_apollo);
 211
 212 MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
 213 MODULE_AUTHOR("David Borowski");
 214 MODULE_DESCRIPTION("Speakup support for Apollo II synthesizer");
 215 MODULE_LICENSE("GPL");
 216 MODULE_VERSION(DRV_VERSION);
 217