[mirror_ubuntu-artful-kernel.git] / drivers / staging / speakup / synth.c

#include <linux/types.h>
#include <linux/ctype.h>	/* for isdigit() and friends */
#include <linux/fs.h>
#include <linux/mm.h>		/* for verify_area */
#include <linux/errno.h>	/* for -EBUSY */
#include <linux/ioport.h>	/* for check_region, request_region */
#include <linux/interrupt.h>
#include <linux/delay.h>	/* for loops_per_sec */
#include <linux/kmod.h>
#include <linux/jiffies.h>
#include <linux/uaccess.h> /* for copy_from_user */
#include <linux/sched.h>
#include <linux/timer.h>
#include <linux/kthread.h>

#include "spk_priv.h"
#include "speakup.h"
#include "serialio.h"

#define MAXSYNTHS       16      /* Max number of synths in array. */
static struct spk_synth *synths[MAXSYNTHS];
struct spk_synth *synth;
char spk_pitch_buff[32] = "";
static int module_status;
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,
};
EXPORT_SYMBOL_GPL(speakup_info);

static int do_synth_init(struct spk_synth *in_synth);

int spk_serial_synth_probe(struct spk_synth *synth)
{
	const struct old_serial_port *ser;
	int failed = 0;

	if ((synth->ser >= SPK_LO_TTY) && (synth->ser <= SPK_HI_TTY)) {
		ser = spk_serial_init(synth->ser);
		if (ser == NULL) {
			failed = -1;
		} else {
			outb_p(0, ser->port);
			mdelay(1);
			outb_p('\r', ser->port);
		}
	} else {
		failed = -1;
		pr_warn("ttyS%i is an invalid port\n", synth->ser);
	}
	if (failed) {
		pr_info("%s: not found\n", synth->long_name);
		return -ENODEV;
	}
	pr_info("%s: ttyS%i, Driver Version %s\n",
			synth->long_name, synth->ser, synth->version);
	synth->alive = 1;
	return 0;
}
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 mechanism, the driver can
 * adapt the loop the way they prefer.
 */
void spk_do_catch_up(struct spk_synth *synth)
{
	u_char ch;
	unsigned long flags;
	unsigned long jiff_max;
	struct var_t *delay_time;
	struct var_t *full_time;
	struct var_t *jiffy_delta;
	int jiffy_delta_val;
	int delay_time_val;
	int full_time_val;

	jiffy_delta = spk_get_var(JIFFY);
	full_time = spk_get_var(FULL);
	delay_time = spk_get_var(DELAY);

	spin_lock_irqsave(&speakup_info.spinlock, flags);
	jiffy_delta_val = jiffy_delta->u.n.value;
	spin_unlock_irqrestore(&speakup_info.spinlock, flags);

	jiff_max = jiffies + jiffy_delta_val;
	while (!kthread_should_stop()) {
		spin_lock_irqsave(&speakup_info.spinlock, flags);
		if (speakup_info.flushing) {
			speakup_info.flushing = 0;
			spin_unlock_irqrestore(&speakup_info.spinlock, flags);
			synth->flush(synth);
			continue;
		}
		if (synth_buffer_empty()) {
			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;
		spin_unlock_irqrestore(&speakup_info.spinlock, flags);
		if (ch == '\n')
			ch = synth->procspeech;
		if (!spk_serial_out(ch)) {
			schedule_timeout(msecs_to_jiffies(full_time_val));
			continue;
		}
		if ((jiffies >= jiff_max) && (ch == SPACE)) {
			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;
			spin_unlock_irqrestore(&speakup_info.spinlock, flags);
			if (spk_serial_out(synth->procspeech))
				schedule_timeout(
					msecs_to_jiffies(delay_time_val));
			else
				schedule_timeout(
					msecs_to_jiffies(full_time_val));
			jiff_max = jiffies + jiffy_delta_val;
		}
		set_current_state(TASK_RUNNING);
		spin_lock_irqsave(&speakup_info.spinlock, flags);
		synth_buffer_getc();
		spin_unlock_irqrestore(&speakup_info.spinlock, flags);
	}
	spk_serial_out(synth->procspeech);
}
EXPORT_SYMBOL_GPL(spk_do_catch_up);

const char *spk_synth_immediate(struct spk_synth *synth, const char *buff)
{
	u_char ch;
	while ((ch = *buff)) {
		if (ch == '\n')
			ch = synth->procspeech;
		if (spk_wait_for_xmitr())
			outb(ch, speakup_info.port_tts);
		else
			return buff;
		buff++;
	}
	return NULL;
}
EXPORT_SYMBOL_GPL(spk_synth_immediate);

void spk_synth_flush(struct spk_synth *synth)
{
	spk_serial_out(synth->clear);
}
EXPORT_SYMBOL_GPL(spk_synth_flush);

int spk_synth_is_alive_nop(struct spk_synth *synth)
{
	synth->alive = 1;
	return 1;
}
EXPORT_SYMBOL_GPL(spk_synth_is_alive_nop);

int spk_synth_is_alive_restart(struct spk_synth *synth)
{
	if (synth->alive)
		return 1;
	if (!synth->alive && spk_wait_for_xmitr() > 0) {
		/* restart */
		synth->alive = 1;
		synth_printf("%s", synth->init);
		return 2; /* reenabled */
	}
	pr_warn("%s: can't restart synth\n", synth->long_name);
	return 0;
}
EXPORT_SYMBOL_GPL(spk_synth_is_alive_restart);

static void thread_wake_up(u_long data)
{
	wake_up_interruptible_all(&speakup_event);
}

static DEFINE_TIMER(thread_timer, thread_wake_up, 0, 0);

void synth_start(void)
{
	struct var_t *trigger_time;

	if (!synth->alive) {
		synth_buffer_clear();
		return;
	}
	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 spk_do_flush(void)
{
	if (!synth)
		return;

	speakup_info.flushing = 1;
	synth_buffer_clear();
	if (synth->alive) {
		if (spk_pitch_shift) {
			synth_printf("%s", spk_pitch_buff);
			spk_pitch_shift = 0;
		}
	}
	wake_up_interruptible_all(&speakup_event);
	wake_up_process(speakup_task);
}

void synth_write(const char *buf, size_t count)
{
	while (count--)
		synth_buffer_add(*buf++);
	synth_start();
}

void synth_printf(const char *fmt, ...)
{
	va_list args;
	unsigned char buf[160], *p;
	int r;

	va_start(args, fmt);
	r = vsnprintf(buf, sizeof(buf), fmt, args);
	va_end(args);
	if (r > sizeof(buf) - 1)
		r = sizeof(buf) - 1;

	p = buf;
	while (r--)
		synth_buffer_add(*p++);
	synth_start();
}
EXPORT_SYMBOL_GPL(synth_printf);

static int index_count;
static int sentence_count;

void spk_reset_index_count(int sc)
{
	static int first = 1;
	if (first)
		first = 0;
	else
		synth->get_index();
	index_count = 0;
	sentence_count = sc;
}

int synth_supports_indexing(void)
{
	if (synth->get_index != NULL)
		return 1;
	return 0;
}

void synth_insert_next_index(int sent_num)
{
	int out;
	if (synth->alive) {
		if (sent_num == 0) {
			synth->indexing.currindex++;
			index_count++;
			if (synth->indexing.currindex >
					synth->indexing.highindex)
				synth->indexing.currindex =
					synth->indexing.lowindex;
		}

		out = synth->indexing.currindex * 10 + sent_num;
		synth_printf(synth->indexing.command, out, out);
	}
}

void spk_get_index_count(int *linecount, int *sentcount)
{
	int ind = synth->get_index();
	if (ind) {
		sentence_count = ind % 10;

		if ((ind / 10) <= synth->indexing.currindex)
			index_count = synth->indexing.currindex-(ind/10);
		else
			index_count = synth->indexing.currindex
				-synth->indexing.lowindex
				+ synth->indexing.highindex-(ind/10)+1;

	}
	*sentcount = sentence_count;
	*linecount = index_count;
}

static struct resource synth_res;

int synth_request_region(unsigned long start, unsigned long n)
{
	struct resource *parent = &ioport_resource;
	memset(&synth_res, 0, sizeof(synth_res));
	synth_res.name = synth->name;
	synth_res.start = start;
	synth_res.end = start + n - 1;
	synth_res.flags = IORESOURCE_BUSY;
	return request_resource(parent, &synth_res);
}
EXPORT_SYMBOL_GPL(synth_request_region);

int synth_release_region(unsigned long start, unsigned long n)
{
	return release_resource(&synth_res);
}
EXPORT_SYMBOL_GPL(synth_release_region);

struct var_t synth_time_vars[] = {
	{ DELAY, .u.n = {NULL, 100, 100, 2000, 0, 0, NULL } },
	{ TRIGGER, .u.n = {NULL, 20, 10, 2000, 0, 0, NULL } },
	{ JIFFY, .u.n = {NULL, 50, 20, 200, 0, 0, NULL } },
	{ FULL, .u.n = {NULL, 400, 200, 60000, 0, 0, NULL } },
	V_LAST_VAR
};

/* called by: speakup_init() */
int synth_init(char *synth_name)
{
	int i;
	int ret = 0;
	struct spk_synth *synth = NULL;

	if (synth_name == NULL)
		return 0;

	if (strcmp(synth_name, "none") == 0) {
		mutex_lock(&spk_mutex);
		synth_release();
		mutex_unlock(&spk_mutex);
		return 0;
	}

	mutex_lock(&spk_mutex);
	/* First, check if we already have it loaded. */
	for (i = 0; i < MAXSYNTHS && synths[i] != NULL; i++)
		if (strcmp(synths[i]->name, synth_name) == 0)
			synth = synths[i];

	/* If we got one, initialize it now. */
	if (synth)
		ret = do_synth_init(synth);
	else
		ret = -ENODEV;
	mutex_unlock(&spk_mutex);

	return ret;
}

/* called by: synth_add() */
static int do_synth_init(struct spk_synth *in_synth)
{
	struct var_t *var;

	synth_release();
	if (in_synth->checkval != SYNTH_CHECK)
		return -EINVAL;
	synth = in_synth;
	synth->alive = 0;
	pr_warn("synth probe\n");
	if (synth->probe(synth) < 0) {
		pr_warn("%s: device probe failed\n", in_synth->name);
		synth = NULL;
		return -ENODEV;
	}
	synth_time_vars[0].u.n.value =
		synth_time_vars[0].u.n.default_val = synth->delay;
	synth_time_vars[1].u.n.value =
		synth_time_vars[1].u.n.default_val = synth->trigger;
	synth_time_vars[2].u.n.value =
		synth_time_vars[2].u.n.default_val = synth->jiffies;
	synth_time_vars[3].u.n.value =
		synth_time_vars[3].u.n.default_val = synth->full;
	synth_printf("%s", synth->init);
	for (var = synth->vars;
		(var->var_id >= 0) && (var->var_id < MAXVARS); var++)
		speakup_register_var(var);
	if (!spk_quiet_boot)
		synth_printf("%s found\n", synth->long_name);
	if (synth->attributes.name
	&& sysfs_create_group(speakup_kobj, &(synth->attributes)) < 0)
		return -ENOMEM;
	synth_flags = synth->flags;
	wake_up_interruptible_all(&speakup_event);
	if (speakup_task)
		wake_up_process(speakup_task);
	return 0;
}

void synth_release(void)
{
	struct var_t *var;
	unsigned long flags;

	if (synth == NULL)
		return;
	spin_lock_irqsave(&speakup_info.spinlock, flags);
	pr_info("releasing synth %s\n", synth->name);
	synth->alive = 0;
	del_timer(&thread_timer);
	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);
	spk_stop_serial_interrupt();
	synth->release();
	synth = NULL;
}

/* called by: all_driver_init() */
int synth_add(struct spk_synth *in_synth)
{
	int i;
	int status = 0;
	mutex_lock(&spk_mutex);
	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);
			return 0;
		}
	if (i == MAXSYNTHS) {
		pr_warn("Error: attempting to add a synth past end of array\n");
		mutex_unlock(&spk_mutex);
		return -1;
	}
	synths[i++] = in_synth;
	synths[i] = NULL;
	if (in_synth->startup)
		status = do_synth_init(in_synth);
	mutex_unlock(&spk_mutex);
	return status;
}
EXPORT_SYMBOL_GPL(synth_add);

void synth_remove(struct spk_synth *in_synth)
{
	int i;
	mutex_lock(&spk_mutex);
	if (synth == in_synth)
		synth_release();
	for (i = 0; synths[i] != NULL; i++) {
		if (in_synth == synths[i])
			break;
	}
	for ( ; synths[i] != NULL; i++) /* compress table */
		synths[i] = synths[i+1];
	module_status = 0;
	mutex_unlock(&spk_mutex);
}
EXPORT_SYMBOL_GPL(synth_remove);

short spk_punc_masks[] = { 0, SOME, MOST, PUNC, PUNC|B_SYM };
Commit	Line	Data
c6e3fd22 WH	1	#include <linux/types.h>
	2	#include <linux/ctype.h> /* for isdigit() and friends */
	3	#include <linux/fs.h>
	4	#include <linux/mm.h> /* for verify_area */
	5	#include <linux/errno.h> /* for -EBUSY */
	6	#include <linux/ioport.h> /* for check_region, request_region */
	7	#include <linux/interrupt.h>
	8	#include <linux/delay.h> /* for loops_per_sec */
	9	#include <linux/kmod.h>
	10	#include <linux/jiffies.h>
	11	#include <linux/uaccess.h> /* for copy_from_user */
	12	#include <linux/sched.h>
	13	#include <linux/timer.h>
	14	#include <linux/kthread.h>
	15
	16	#include "spk_priv.h"
	17	#include "speakup.h"
	18	#include "serialio.h"
	19
	20	#define MAXSYNTHS 16 /* Max number of synths in array. */
	21	static struct spk_synth *synths[MAXSYNTHS];
1e560261	22	struct spk_synth *synth;
ca2beaf8	23	char spk_pitch_buff[32] = "";
c6e3fd22	24	static int module_status;
ca2beaf8	25	bool spk_quiet_boot;
c6e3fd22 WH	26
c6e3fd22 WH	27	struct speakup_info_t speakup_info = {
667b6141 WH	28	/*
	29	* This spinlock is used to protect the entire speakup machinery, and
	30	* must be taken at each kernel->speakup transition and released at
	31	* each corresponding speakup->kernel transition.
	32	*
	33	* The progression thread only interferes with the speakup machinery through
	34	* the synth buffer, so only needs to take the lock while tinkering with
	35	* the buffer.
	36	*
	37	* We use spin_lock/trylock_irqsave and spin_unlock_irqrestore with this
	38	* spinlock because speakup needs to disable the keyboard IRQ.
	39	*/
1e560261	40	.spinlock = __SPIN_LOCK_UNLOCKED(speakup_info.spinlock),
c6e3fd22 WH	41	.flushing = 0,
	42	};
	43	EXPORT_SYMBOL_GPL(speakup_info);
	44
	45	static int do_synth_init(struct spk_synth *in_synth);
	46
ca2beaf8	47	int spk_serial_synth_probe(struct spk_synth *synth)
c6e3fd22	48	{
3ee0017e	49	const struct old_serial_port *ser;
c6e3fd22 WH	50	int failed = 0;
	51
	52	if ((synth->ser >= SPK_LO_TTY) && (synth->ser <= SPK_HI_TTY)) {
	53	ser = spk_serial_init(synth->ser);
	54	if (ser == NULL) {
	55	failed = -1;
	56	} else {
	57	outb_p(0, ser->port);
	58	mdelay(1);
	59	outb_p('\r', ser->port);
	60	}
	61	} else {
	62	failed = -1;
	63	pr_warn("ttyS%i is an invalid port\n", synth->ser);
	64	}
	65	if (failed) {
	66	pr_info("%s: not found\n", synth->long_name);
	67	return -ENODEV;
	68	}
	69	pr_info("%s: ttyS%i, Driver Version %s\n",
	70	synth->long_name, synth->ser, synth->version);
	71	synth->alive = 1;
	72	return 0;
	73	}
ca2beaf8	74	EXPORT_SYMBOL_GPL(spk_serial_synth_probe);
c6e3fd22 WH	75
	76	/* Main loop of the progression thread: keep eating from the buffer
	77	* and push to the serial port, waiting as needed
	78	*
83414d52	79	* For devices that have a "full" notification mechanism, the driver can
c6e3fd22 WH	80	* adapt the loop the way they prefer.
	81	*/
	82	void spk_do_catch_up(struct spk_synth *synth)
	83	{
	84	u_char ch;
	85	unsigned long flags;
	86	unsigned long jiff_max;
	87	struct var_t *delay_time;
	88	struct var_t *full_time;
	89	struct var_t *jiffy_delta;
	90	int jiffy_delta_val;
	91	int delay_time_val;
	92	int full_time_val;
	93
ca2beaf8 ST	94	jiffy_delta = spk_get_var(JIFFY);
	95	full_time = spk_get_var(FULL);
	96	delay_time = spk_get_var(DELAY);
c6e3fd22	97
6697330a	98	spin_lock_irqsave(&speakup_info.spinlock, flags);
c6e3fd22	99	jiffy_delta_val = jiffy_delta->u.n.value;
6697330a	100	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	101
	102	jiff_max = jiffies + jiffy_delta_val;
	103	while (!kthread_should_stop()) {
6697330a	104	spin_lock_irqsave(&speakup_info.spinlock, flags);
c6e3fd22 WH	105	if (speakup_info.flushing) {
c6e3fd22 WH	106	speakup_info.flushing = 0;
6697330a	107	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	108	synth->flush(synth);
	109	continue;
	110	}
	111	if (synth_buffer_empty()) {
6697330a	112	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	113	break;
	114	}
	115	ch = synth_buffer_peek();
	116	set_current_state(TASK_INTERRUPTIBLE);
	117	full_time_val = full_time->u.n.value;
6697330a	118	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	119	if (ch == '\n')
	120	ch = synth->procspeech;
	121	if (!spk_serial_out(ch)) {
	122	schedule_timeout(msecs_to_jiffies(full_time_val));
	123	continue;
	124	}
	125	if ((jiffies >= jiff_max) && (ch == SPACE)) {
6697330a	126	spin_lock_irqsave(&speakup_info.spinlock, flags);
c6e3fd22 WH	127	jiffy_delta_val = jiffy_delta->u.n.value;
	128	delay_time_val = delay_time->u.n.value;
	129	full_time_val = full_time->u.n.value;
6697330a	130	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22	131	if (spk_serial_out(synth->procspeech))
1e560261 WH	132	schedule_timeout(
1e560261 WH	133	msecs_to_jiffies(delay_time_val));
c6e3fd22	134	else
1e560261 WH	135	schedule_timeout(
1e560261 WH	136	msecs_to_jiffies(full_time_val));
c6e3fd22 WH	137	jiff_max = jiffies + jiffy_delta_val;
	138	}
	139	set_current_state(TASK_RUNNING);
6697330a	140	spin_lock_irqsave(&speakup_info.spinlock, flags);
c6e3fd22	141	synth_buffer_getc();
6697330a	142	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	143	}
	144	spk_serial_out(synth->procspeech);
	145	}
	146	EXPORT_SYMBOL_GPL(spk_do_catch_up);
	147
	148	const char spk_synth_immediate(struct spk_synth synth, const char *buff)
	149	{
	150	u_char ch;
	151	while ((ch = *buff)) {
	152	if (ch == '\n')
	153	ch = synth->procspeech;
ca2beaf8	154	if (spk_wait_for_xmitr())
c6e3fd22 WH	155	outb(ch, speakup_info.port_tts);
	156	else
	157	return buff;
	158	buff++;
	159	}
4e595c0d	160	return NULL;
c6e3fd22 WH	161	}
	162	EXPORT_SYMBOL_GPL(spk_synth_immediate);
	163
	164	void spk_synth_flush(struct spk_synth *synth)
	165	{
	166	spk_serial_out(synth->clear);
	167	}
	168	EXPORT_SYMBOL_GPL(spk_synth_flush);
	169
	170	int spk_synth_is_alive_nop(struct spk_synth *synth)
	171	{
	172	synth->alive = 1;
	173	return 1;
	174	}
	175	EXPORT_SYMBOL_GPL(spk_synth_is_alive_nop);
	176
	177	int spk_synth_is_alive_restart(struct spk_synth *synth)
	178	{
	179	if (synth->alive)
	180	return 1;
ca2beaf8	181	if (!synth->alive && spk_wait_for_xmitr() > 0) {
c6e3fd22 WH	182	/* restart */
	183	synth->alive = 1;
	184	synth_printf("%s", synth->init);
	185	return 2; /* reenabled */
	186	}
	187	pr_warn("%s: can't restart synth\n", synth->long_name);
	188	return 0;
	189	}
	190	EXPORT_SYMBOL_GPL(spk_synth_is_alive_restart);
	191
	192	static void thread_wake_up(u_long data)
	193	{
	194	wake_up_interruptible_all(&speakup_event);
	195	}
	196
	197	static DEFINE_TIMER(thread_timer, thread_wake_up, 0, 0);
	198
	199	void synth_start(void)
	200	{
	201	struct var_t *trigger_time;
	202
	203	if (!synth->alive) {
	204	synth_buffer_clear();
	205	return;
	206	}
ca2beaf8	207	trigger_time = spk_get_var(TRIGGER);
c6e3fd22	208	if (!timer_pending(&thread_timer))
1e560261 WH	209	mod_timer(&thread_timer, jiffies +
1e560261 WH	210	msecs_to_jiffies(trigger_time->u.n.value));
c6e3fd22 WH	211	}
c6e3fd22 WH	212
ca2beaf8	213	void spk_do_flush(void)
c6e3fd22	214	{
8b9c012a SL	215	if (!synth)
	216	return;
	217
c6e3fd22 WH	218	speakup_info.flushing = 1;
	219	synth_buffer_clear();
	220	if (synth->alive) {
ca2beaf8 ST	221	if (spk_pitch_shift) {
	222	synth_printf("%s", spk_pitch_buff);
	223	spk_pitch_shift = 0;
c6e3fd22 WH	224	}
	225	}
	226	wake_up_interruptible_all(&speakup_event);
	227	wake_up_process(speakup_task);
	228	}
	229
	230	void synth_write(const char *buf, size_t count)
	231	{
	232	while (count--)
	233	synth_buffer_add(*buf++);
	234	synth_start();
	235	}
	236
	237	void synth_printf(const char *fmt, ...)
	238	{
	239	va_list args;
	240	unsigned char buf[160], *p;
	241	int r;
	242
	243	va_start(args, fmt);
	244	r = vsnprintf(buf, sizeof(buf), fmt, args);
	245	va_end(args);
	246	if (r > sizeof(buf) - 1)
	247	r = sizeof(buf) - 1;
	248
	249	p = buf;
	250	while (r--)
	251	synth_buffer_add(*p++);
	252	synth_start();
	253	}
	254	EXPORT_SYMBOL_GPL(synth_printf);
	255
1e560261 WH	256	static int index_count;
1e560261 WH	257	static int sentence_count;
c6e3fd22	258
ca2beaf8	259	void spk_reset_index_count(int sc)
c6e3fd22 WH	260	{
	261	static int first = 1;
	262	if (first)
	263	first = 0;
	264	else
	265	synth->get_index();
	266	index_count = 0;
	267	sentence_count = sc;
	268	}
	269
	270	int synth_supports_indexing(void)
	271	{
	272	if (synth->get_index != NULL)
	273	return 1;
	274	return 0;
	275	}
	276
	277	void synth_insert_next_index(int sent_num)
	278	{
	279	int out;
	280	if (synth->alive) {
	281	if (sent_num == 0) {
	282	synth->indexing.currindex++;
	283	index_count++;
	284	if (synth->indexing.currindex >
	285	synth->indexing.highindex)
	286	synth->indexing.currindex =
	287	synth->indexing.lowindex;
	288	}
	289
	290	out = synth->indexing.currindex * 10 + sent_num;
	291	synth_printf(synth->indexing.command, out, out);
	292	}
	293	}
	294
ca2beaf8	295	void spk_get_index_count(int linecount, int sentcount)
c6e3fd22 WH	296	{
	297	int ind = synth->get_index();
	298	if (ind) {
	299	sentence_count = ind % 10;
	300
	301	if ((ind / 10) <= synth->indexing.currindex)
	302	index_count = synth->indexing.currindex-(ind/10);
	303	else
1e560261 WH	304	index_count = synth->indexing.currindex
1e560261 WH	305	-synth->indexing.lowindex
c6e3fd22 WH	306	+ synth->indexing.highindex-(ind/10)+1;
	307
	308	}
	309	*sentcount = sentence_count;
	310	*linecount = index_count;
	311	}
	312
	313	static struct resource synth_res;
	314
	315	int synth_request_region(unsigned long start, unsigned long n)
	316	{
	317	struct resource *parent = &ioport_resource;
	318	memset(&synth_res, 0, sizeof(synth_res));
	319	synth_res.name = synth->name;
	320	synth_res.start = start;
	321	synth_res.end = start + n - 1;
	322	synth_res.flags = IORESOURCE_BUSY;
	323	return request_resource(parent, &synth_res);
	324	}
	325	EXPORT_SYMBOL_GPL(synth_request_region);
	326
	327	int synth_release_region(unsigned long start, unsigned long n)
	328	{
	329	return release_resource(&synth_res);
	330	}
	331	EXPORT_SYMBOL_GPL(synth_release_region);
	332
	333	struct var_t synth_time_vars[] = {
1e560261 WH	334	{ DELAY, .u.n = {NULL, 100, 100, 2000, 0, 0, NULL } },
	335	{ TRIGGER, .u.n = {NULL, 20, 10, 2000, 0, 0, NULL } },
	336	{ JIFFY, .u.n = {NULL, 50, 20, 200, 0, 0, NULL } },
	337	{ FULL, .u.n = {NULL, 400, 200, 60000, 0, 0, NULL } },
c6e3fd22 WH	338	V_LAST_VAR
	339	};
	340
	341	/* called by: speakup_init() */
	342	int synth_init(char *synth_name)
	343	{
	344	int i;
	345	int ret = 0;
	346	struct spk_synth *synth = NULL;
	347
	348	if (synth_name == NULL)
	349	return 0;
	350
	351	if (strcmp(synth_name, "none") == 0) {
	352	mutex_lock(&spk_mutex);
	353	synth_release();
	354	mutex_unlock(&spk_mutex);
	355	return 0;
	356	}
	357
	358	mutex_lock(&spk_mutex);
	359	/* First, check if we already have it loaded. */
ae428655	360	for (i = 0; i < MAXSYNTHS && synths[i] != NULL; i++)
c6e3fd22 WH	361	if (strcmp(synths[i]->name, synth_name) == 0)
	362	synth = synths[i];
	363
	364	/* If we got one, initialize it now. */
	365	if (synth)
	366	ret = do_synth_init(synth);
	367	else
	368	ret = -ENODEV;
	369	mutex_unlock(&spk_mutex);
	370
	371	return ret;
	372	}
	373
	374	/* called by: synth_add() */
	375	static int do_synth_init(struct spk_synth *in_synth)
	376	{
	377	struct var_t *var;
	378
	379	synth_release();
	380	if (in_synth->checkval != SYNTH_CHECK)
	381	return -EINVAL;
	382	synth = in_synth;
	383	synth->alive = 0;
	384	pr_warn("synth probe\n");
	385	if (synth->probe(synth) < 0) {
	386	pr_warn("%s: device probe failed\n", in_synth->name);
	387	synth = NULL;
	388	return -ENODEV;
	389	}
	390	synth_time_vars[0].u.n.value =
	391	synth_time_vars[0].u.n.default_val = synth->delay;
	392	synth_time_vars[1].u.n.value =
	393	synth_time_vars[1].u.n.default_val = synth->trigger;
	394	synth_time_vars[2].u.n.value =
	395	synth_time_vars[2].u.n.default_val = synth->jiffies;
	396	synth_time_vars[3].u.n.value =
	397	synth_time_vars[3].u.n.default_val = synth->full;
	398	synth_printf("%s", synth->init);
1e560261 WH	399	for (var = synth->vars;
1e560261 WH	400	(var->var_id >= 0) && (var->var_id < MAXVARS); var++)
c6e3fd22	401	speakup_register_var(var);
ca2beaf8	402	if (!spk_quiet_boot)
c6e3fd22 WH	403	synth_printf("%s found\n", synth->long_name);
	404	if (synth->attributes.name
	405	&& sysfs_create_group(speakup_kobj, &(synth->attributes)) < 0)
	406	return -ENOMEM;
	407	synth_flags = synth->flags;
	408	wake_up_interruptible_all(&speakup_event);
	409	if (speakup_task)
	410	wake_up_process(speakup_task);
	411	return 0;
	412	}
	413
	414	void synth_release(void)
	415	{
	416	struct var_t *var;
	417	unsigned long flags;
	418
	419	if (synth == NULL)
	420	return;
6697330a	421	spin_lock_irqsave(&speakup_info.spinlock, flags);
c6e3fd22 WH	422	pr_info("releasing synth %s\n", synth->name);
	423	synth->alive = 0;
	424	del_timer(&thread_timer);
6697330a	425	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	426	if (synth->attributes.name)
	427	sysfs_remove_group(speakup_kobj, &(synth->attributes));
	428	for (var = synth->vars; var->var_id != MAXVARS; var++)
	429	speakup_unregister_var(var->var_id);
ca2beaf8	430	spk_stop_serial_interrupt();
c6e3fd22 WH	431	synth->release();
	432	synth = NULL;
	433	}
	434
	435	/* called by: all_driver_init() */
	436	int synth_add(struct spk_synth *in_synth)
	437	{
	438	int i;
	439	int status = 0;
	440	mutex_lock(&spk_mutex);
6102c48b	441	for (i = 0; i < MAXSYNTHS && synths[i] != NULL; i++)
c6e3fd22 WH	442	/* synth_remove() is responsible for rotating the array down */
	443	if (in_synth == synths[i]) {
	444	mutex_unlock(&spk_mutex);
	445	return 0;
	446	}
	447	if (i == MAXSYNTHS) {
	448	pr_warn("Error: attempting to add a synth past end of array\n");
	449	mutex_unlock(&spk_mutex);
	450	return -1;
	451	}
	452	synths[i++] = in_synth;
	453	synths[i] = NULL;
	454	if (in_synth->startup)
	455	status = do_synth_init(in_synth);
	456	mutex_unlock(&spk_mutex);
	457	return status;
	458	}
	459	EXPORT_SYMBOL_GPL(synth_add);
	460
	461	void synth_remove(struct spk_synth *in_synth)
	462	{
	463	int i;
	464	mutex_lock(&spk_mutex);
	465	if (synth == in_synth)
	466	synth_release();
	467	for (i = 0; synths[i] != NULL; i++) {
	468	if (in_synth == synths[i])
	469	break;
	470	}
	471	for ( ; synths[i] != NULL; i++) /* compress table */
	472	synths[i] = synths[i+1];
	473	module_status = 0;
	474	mutex_unlock(&spk_mutex);
	475	}
	476	EXPORT_SYMBOL_GPL(synth_remove);
	477
ca2beaf8	478	short spk_punc_masks[] = { 0, SOME, MOST, PUNC, PUNC\|B_SYM };