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path: root/drivers/staging/speakup/synth.c
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Diffstat (limited to 'drivers/staging/speakup/synth.c')
-rw-r--r--drivers/staging/speakup/synth.c87
1 files changed, 51 insertions, 36 deletions
diff --git a/drivers/staging/speakup/synth.c b/drivers/staging/speakup/synth.c
index 2222d6919ef..172cf62b1aa 100644
--- a/drivers/staging/speakup/synth.c
+++ b/drivers/staging/speakup/synth.c
@@ -20,11 +20,23 @@
#define MAXSYNTHS 16 /* Max number of synths in array. */
static struct spk_synth *synths[MAXSYNTHS];
struct spk_synth *synth;
-char pitch_buff[32] = "";
+char spk_pitch_buff[32] = "";
static int module_status;
-bool quiet_boot;
+bool spk_quiet_boot;
struct speakup_info_t speakup_info = {
+ /*
+ * This spinlock is used to protect the entire speakup machinery, and
+ * must be taken at each kernel->speakup transition and released at
+ * each corresponding speakup->kernel transition.
+ *
+ * The progression thread only interferes with the speakup machinery through
+ * the synth buffer, so only needs to take the lock while tinkering with
+ * the buffer.
+ *
+ * We use spin_lock/trylock_irqsave and spin_unlock_irqrestore with this
+ * spinlock because speakup needs to disable the keyboard IRQ.
+ */
.spinlock = __SPIN_LOCK_UNLOCKED(speakup_info.spinlock),
.flushing = 0,
};
@@ -32,9 +44,9 @@ EXPORT_SYMBOL_GPL(speakup_info);
static int do_synth_init(struct spk_synth *in_synth);
-int serial_synth_probe(struct spk_synth *synth)
+int spk_serial_synth_probe(struct spk_synth *synth)
{
- struct serial_state *ser;
+ const struct old_serial_port *ser;
int failed = 0;
if ((synth->ser >= SPK_LO_TTY) && (synth->ser <= SPK_HI_TTY)) {
@@ -59,12 +71,12 @@ int serial_synth_probe(struct spk_synth *synth)
synth->alive = 1;
return 0;
}
-EXPORT_SYMBOL_GPL(serial_synth_probe);
+EXPORT_SYMBOL_GPL(spk_serial_synth_probe);
/* Main loop of the progression thread: keep eating from the buffer
* and push to the serial port, waiting as needed
*
- * For devices that have a "full" notification mecanism, the driver can
+ * For devices that have a "full" notification mechanism, the driver can
* adapt the loop the way they prefer.
*/
void spk_do_catch_up(struct spk_synth *synth)
@@ -79,31 +91,31 @@ void spk_do_catch_up(struct spk_synth *synth)
int delay_time_val;
int full_time_val;
- jiffy_delta = get_var(JIFFY);
- full_time = get_var(FULL);
- delay_time = get_var(DELAY);
+ jiffy_delta = spk_get_var(JIFFY);
+ full_time = spk_get_var(FULL);
+ delay_time = spk_get_var(DELAY);
- spk_lock(flags);
+ spin_lock_irqsave(&speakup_info.spinlock, flags);
jiffy_delta_val = jiffy_delta->u.n.value;
- spk_unlock(flags);
+ spin_unlock_irqrestore(&speakup_info.spinlock, flags);
jiff_max = jiffies + jiffy_delta_val;
while (!kthread_should_stop()) {
- spk_lock(flags);
+ spin_lock_irqsave(&speakup_info.spinlock, flags);
if (speakup_info.flushing) {
speakup_info.flushing = 0;
- spk_unlock(flags);
+ spin_unlock_irqrestore(&speakup_info.spinlock, flags);
synth->flush(synth);
continue;
}
if (synth_buffer_empty()) {
- spk_unlock(flags);
+ spin_unlock_irqrestore(&speakup_info.spinlock, flags);
break;
}
ch = synth_buffer_peek();
set_current_state(TASK_INTERRUPTIBLE);
full_time_val = full_time->u.n.value;
- spk_unlock(flags);
+ spin_unlock_irqrestore(&speakup_info.spinlock, flags);
if (ch == '\n')
ch = synth->procspeech;
if (!spk_serial_out(ch)) {
@@ -111,11 +123,11 @@ void spk_do_catch_up(struct spk_synth *synth)
continue;
}
if ((jiffies >= jiff_max) && (ch == SPACE)) {
- spk_lock(flags);
+ spin_lock_irqsave(&speakup_info.spinlock, flags);
jiffy_delta_val = jiffy_delta->u.n.value;
delay_time_val = delay_time->u.n.value;
full_time_val = full_time->u.n.value;
- spk_unlock(flags);
+ spin_unlock_irqrestore(&speakup_info.spinlock, flags);
if (spk_serial_out(synth->procspeech))
schedule_timeout(
msecs_to_jiffies(delay_time_val));
@@ -125,9 +137,9 @@ void spk_do_catch_up(struct spk_synth *synth)
jiff_max = jiffies + jiffy_delta_val;
}
set_current_state(TASK_RUNNING);
- spk_lock(flags);
+ spin_lock_irqsave(&speakup_info.spinlock, flags);
synth_buffer_getc();
- spk_unlock(flags);
+ spin_unlock_irqrestore(&speakup_info.spinlock, flags);
}
spk_serial_out(synth->procspeech);
}
@@ -139,13 +151,13 @@ const char *spk_synth_immediate(struct spk_synth *synth, const char *buff)
while ((ch = *buff)) {
if (ch == '\n')
ch = synth->procspeech;
- if (wait_for_xmitr())
+ if (spk_wait_for_xmitr())
outb(ch, speakup_info.port_tts);
else
return buff;
buff++;
}
- return 0;
+ return NULL;
}
EXPORT_SYMBOL_GPL(spk_synth_immediate);
@@ -166,7 +178,7 @@ int spk_synth_is_alive_restart(struct spk_synth *synth)
{
if (synth->alive)
return 1;
- if (!synth->alive && wait_for_xmitr() > 0) {
+ if (!synth->alive && spk_wait_for_xmitr() > 0) {
/* restart */
synth->alive = 1;
synth_printf("%s", synth->init);
@@ -192,20 +204,23 @@ void synth_start(void)
synth_buffer_clear();
return;
}
- trigger_time = get_var(TRIGGER);
+ trigger_time = spk_get_var(TRIGGER);
if (!timer_pending(&thread_timer))
mod_timer(&thread_timer, jiffies +
msecs_to_jiffies(trigger_time->u.n.value));
}
-void do_flush(void)
+void spk_do_flush(void)
{
+ if (!synth)
+ return;
+
speakup_info.flushing = 1;
synth_buffer_clear();
if (synth->alive) {
- if (pitch_shift) {
- synth_printf("%s", pitch_buff);
- pitch_shift = 0;
+ if (spk_pitch_shift) {
+ synth_printf("%s", spk_pitch_buff);
+ spk_pitch_shift = 0;
}
}
wake_up_interruptible_all(&speakup_event);
@@ -241,7 +256,7 @@ EXPORT_SYMBOL_GPL(synth_printf);
static int index_count;
static int sentence_count;
-void reset_index_count(int sc)
+void spk_reset_index_count(int sc)
{
static int first = 1;
if (first)
@@ -277,7 +292,7 @@ void synth_insert_next_index(int sent_num)
}
}
-void get_index_count(int *linecount, int *sentcount)
+void spk_get_index_count(int *linecount, int *sentcount)
{
int ind = synth->get_index();
if (ind) {
@@ -342,7 +357,7 @@ int synth_init(char *synth_name)
mutex_lock(&spk_mutex);
/* First, check if we already have it loaded. */
- for (i = 0; synths[i] != NULL && i < MAXSYNTHS; i++)
+ for (i = 0; i < MAXSYNTHS && synths[i] != NULL; i++)
if (strcmp(synths[i]->name, synth_name) == 0)
synth = synths[i];
@@ -384,7 +399,7 @@ static int do_synth_init(struct spk_synth *in_synth)
for (var = synth->vars;
(var->var_id >= 0) && (var->var_id < MAXVARS); var++)
speakup_register_var(var);
- if (!quiet_boot)
+ if (!spk_quiet_boot)
synth_printf("%s found\n", synth->long_name);
if (synth->attributes.name
&& sysfs_create_group(speakup_kobj, &(synth->attributes)) < 0)
@@ -403,16 +418,16 @@ void synth_release(void)
if (synth == NULL)
return;
- spk_lock(flags);
+ spin_lock_irqsave(&speakup_info.spinlock, flags);
pr_info("releasing synth %s\n", synth->name);
synth->alive = 0;
del_timer(&thread_timer);
- spk_unlock(flags);
+ spin_unlock_irqrestore(&speakup_info.spinlock, flags);
if (synth->attributes.name)
sysfs_remove_group(speakup_kobj, &(synth->attributes));
for (var = synth->vars; var->var_id != MAXVARS; var++)
speakup_unregister_var(var->var_id);
- stop_serial_interrupt();
+ spk_stop_serial_interrupt();
synth->release();
synth = NULL;
}
@@ -423,7 +438,7 @@ int synth_add(struct spk_synth *in_synth)
int i;
int status = 0;
mutex_lock(&spk_mutex);
- for (i = 0; synths[i] != NULL && i < MAXSYNTHS; i++)
+ for (i = 0; i < MAXSYNTHS && synths[i] != NULL; i++)
/* synth_remove() is responsible for rotating the array down */
if (in_synth == synths[i]) {
mutex_unlock(&spk_mutex);
@@ -460,4 +475,4 @@ void synth_remove(struct spk_synth *in_synth)
}
EXPORT_SYMBOL_GPL(synth_remove);
-short punc_masks[] = { 0, SOME, MOST, PUNC, PUNC|B_SYM };
+short spk_punc_masks[] = { 0, SOME, MOST, PUNC, PUNC|B_SYM };
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 08:33:18 +0000