root/drivers/staging/speakup/speakup_spkout.c

DEFINITIONS

1. synth_flush

   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
  17 #define PROCSPEECH '\r'
  18 
  19 static void synth_flush(struct spk_synth *synth);
  20 
  21 static struct var_t vars[] = {
  22         { CAPS_START, .u.s = {"\x05P+" } },
  23         { CAPS_STOP, .u.s = {"\x05P-" } },
  24         { RATE, .u.n = {"\x05R%d", 7, 0, 9, 0, 0, NULL } },
  25         { PITCH, .u.n = {"\x05P%d", 3, 0, 9, 0, 0, NULL } },
  26         { VOL, .u.n = {"\x05V%d", 9, 0, 9, 0, 0, NULL } },
  27         { TONE, .u.n = {"\x05T%c", 8, 0, 25, 65, 0, NULL } },
  28         { PUNCT, .u.n = {"\x05M%c", 0, 0, 3, 0, 0, "nsma" } },
  29         { DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
  30         V_LAST_VAR
  31 };
  32 
  33 /* These attributes will appear in /sys/accessibility/speakup/spkout. */
  34 
  35 static struct kobj_attribute caps_start_attribute =
  36         __ATTR(caps_start, 0644, spk_var_show, spk_var_store);
  37 static struct kobj_attribute caps_stop_attribute =
  38         __ATTR(caps_stop, 0644, spk_var_show, spk_var_store);
  39 static struct kobj_attribute pitch_attribute =
  40         __ATTR(pitch, 0644, spk_var_show, spk_var_store);
  41 static struct kobj_attribute punct_attribute =
  42         __ATTR(punct, 0644, spk_var_show, spk_var_store);
  43 static struct kobj_attribute rate_attribute =
  44         __ATTR(rate, 0644, spk_var_show, spk_var_store);
  45 static struct kobj_attribute tone_attribute =
  46         __ATTR(tone, 0644, spk_var_show, spk_var_store);
  47 static struct kobj_attribute vol_attribute =
  48         __ATTR(vol, 0644, spk_var_show, spk_var_store);
  49 
  50 static struct kobj_attribute delay_time_attribute =
  51         __ATTR(delay_time, 0644, spk_var_show, spk_var_store);
  52 static struct kobj_attribute direct_attribute =
  53         __ATTR(direct, 0644, spk_var_show, spk_var_store);
  54 static struct kobj_attribute full_time_attribute =
  55         __ATTR(full_time, 0644, spk_var_show, spk_var_store);
  56 static struct kobj_attribute jiffy_delta_attribute =
  57         __ATTR(jiffy_delta, 0644, spk_var_show, spk_var_store);
  58 static struct kobj_attribute trigger_time_attribute =
  59         __ATTR(trigger_time, 0644, spk_var_show, spk_var_store);
  60 
  61 /*
  62  * Create a group of attributes so that we can create and destroy them all
  63  * at once.
  64  */
  65 static struct attribute *synth_attrs[] = {
  66         &caps_start_attribute.attr,
  67         &caps_stop_attribute.attr,
  68         &pitch_attribute.attr,
  69         &punct_attribute.attr,
  70         &rate_attribute.attr,
  71         &tone_attribute.attr,
  72         &vol_attribute.attr,
  73         &delay_time_attribute.attr,
  74         &direct_attribute.attr,
  75         &full_time_attribute.attr,
  76         &jiffy_delta_attribute.attr,
  77         &trigger_time_attribute.attr,
  78         NULL,   /* need to NULL terminate the list of attributes */
  79 };
  80 
  81 static struct spk_synth synth_spkout = {
  82         .name = "spkout",
  83         .version = DRV_VERSION,
  84         .long_name = "Speakout",
  85         .init = "\005W1\005I2\005C3",
  86         .procspeech = PROCSPEECH,
  87         .clear = SYNTH_CLEAR,
  88         .delay = 500,
  89         .trigger = 50,
  90         .jiffies = 50,
  91         .full = 40000,
  92         .dev_name = SYNTH_DEFAULT_DEV,
  93         .startup = SYNTH_START,
  94         .checkval = SYNTH_CHECK,
  95         .vars = vars,
  96         .io_ops = &spk_ttyio_ops,
  97         .probe = spk_ttyio_synth_probe,
  98         .release = spk_ttyio_release,
  99         .synth_immediate = spk_ttyio_synth_immediate,
 100         .catch_up = spk_do_catch_up,
 101         .flush = synth_flush,
 102         .is_alive = spk_synth_is_alive_restart,
 103         .synth_adjust = NULL,
 104         .read_buff_add = NULL,
 105         .get_index = spk_synth_get_index,
 106         .indexing = {
 107                 .command = "\x05[%c",
 108                 .lowindex = 1,
 109                 .highindex = 5,
 110                 .currindex = 1,
 111         },
 112         .attributes = {
 113                 .attrs = synth_attrs,
 114                 .name = "spkout",
 115         },
 116 };
 117 
 118 static void synth_flush(struct spk_synth *synth)
 119 {
 120         synth->io_ops->flush_buffer();
 121         synth->io_ops->send_xchar(SYNTH_CLEAR);
 122 }
 123 
 124 module_param_named(ser, synth_spkout.ser, int, 0444);
 125 module_param_named(dev, synth_spkout.dev_name, charp, 0444);
 126 module_param_named(start, synth_spkout.startup, short, 0444);
 127 
 128 MODULE_PARM_DESC(ser, "Set the serial port for the synthesizer (0-based).");
 129 MODULE_PARM_DESC(dev, "Set the device e.g. ttyUSB0, for the synthesizer.");
 130 MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
 131 
 132 module_spk_synth(synth_spkout);
 133 
 134 MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
 135 MODULE_AUTHOR("David Borowski");
 136 MODULE_DESCRIPTION("Speakup support for Speak Out synthesizers");
 137 MODULE_LICENSE("GPL");
 138 MODULE_VERSION(DRV_VERSION);
 139