[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 + 1];
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);

/*
 * 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;
		}
		synth_buffer_skip_nonlatin1();
		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 (!synth->io_ops->synth_out(synth, ch)) {
			schedule_timeout(msecs_to_jiffies(full_time_val));
			continue;
		}
		if (time_after_eq(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 (synth->io_ops->synth_out(synth, 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);
	}
	synth->io_ops->synth_out(synth, synth->procspeech);
}
EXPORT_SYMBOL_GPL(spk_do_catch_up);

void spk_synth_flush(struct spk_synth *synth)
{
	synth->io_ops->flush_buffer();
	synth->io_ops->synth_out(synth, synth->clear);
}
EXPORT_SYMBOL_GPL(spk_synth_flush);

unsigned char spk_synth_get_index(struct spk_synth *synth)
{
	return synth->io_ops->synth_in_nowait();
}
EXPORT_SYMBOL_GPL(spk_synth_get_index);

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 (spk_wait_for_xmitr(synth) > 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);

void synth_putwc(u16 wc)
{
	synth_buffer_add(wc);
}
EXPORT_SYMBOL_GPL(synth_putwc);

void synth_putwc_s(u16 wc)
{
	synth_buffer_add(wc);
	synth_start();
}
EXPORT_SYMBOL_GPL(synth_putwc_s);

void synth_putws(const u16 *buf)
{
	const u16 *p;

	for (p = buf; *p; p++)
		synth_buffer_add(*p);
}
EXPORT_SYMBOL_GPL(synth_putws);

void synth_putws_s(const u16 *buf)
{
	synth_putws(buf);
	synth_start();
}
EXPORT_SYMBOL_GPL(synth_putws_s);

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(synth);
	index_count = 0;
	sentence_count = sc;
}

int synth_supports_indexing(void)
{
	if (synth->get_index)
		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(synth);

	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)
		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]; 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)
		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);
	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]; 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;
	}

	if (in_synth->startup)
		status = do_synth_init(in_synth);

	if (!status) {
		synths[i++] = in_synth;
		synths[i] = NULL;
	}

	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]; i++) {
		if (in_synth == synths[i])
			break;
	}
	for ( ; synths[i]; 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>
d2ad9a82	11	#include <linux/uaccess.h> /* for copy_from_user */
c6e3fd22 WH	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. */
99a9ffac	21	static struct spk_synth *synths[MAXSYNTHS + 1];
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	*
05719ac7 PN	33	* The progression thread only interferes with the speakup machinery
	34	* through the synth buffer, so only needs to take the lock
	35	* while tinkering with the buffer.
667b6141 WH	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
d2ad9a82 WF	47	/*
d2ad9a82 WF	48	* Main loop of the progression thread: keep eating from the buffer
c6e3fd22 WH	49	* and push to the serial port, waiting as needed
c6e3fd22 WH	50	*
83414d52	51	* For devices that have a "full" notification mechanism, the driver can
c6e3fd22 WH	52	* adapt the loop the way they prefer.
	53	*/
	54	void spk_do_catch_up(struct spk_synth *synth)
	55	{
	56	u_char ch;
	57	unsigned long flags;
	58	unsigned long jiff_max;
	59	struct var_t *delay_time;
	60	struct var_t *full_time;
	61	struct var_t *jiffy_delta;
	62	int jiffy_delta_val;
	63	int delay_time_val;
	64	int full_time_val;
	65
ca2beaf8 ST	66	jiffy_delta = spk_get_var(JIFFY);
	67	full_time = spk_get_var(FULL);
	68	delay_time = spk_get_var(DELAY);
c6e3fd22	69
6697330a	70	spin_lock_irqsave(&speakup_info.spinlock, flags);
c6e3fd22	71	jiffy_delta_val = jiffy_delta->u.n.value;
6697330a	72	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	73
	74	jiff_max = jiffies + jiffy_delta_val;
	75	while (!kthread_should_stop()) {
6697330a	76	spin_lock_irqsave(&speakup_info.spinlock, flags);
c6e3fd22 WH	77	if (speakup_info.flushing) {
c6e3fd22 WH	78	speakup_info.flushing = 0;
6697330a	79	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	80	synth->flush(synth);
	81	continue;
	82	}
89fc2ae8	83	synth_buffer_skip_nonlatin1();
c6e3fd22	84	if (synth_buffer_empty()) {
6697330a	85	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	86	break;
	87	}
	88	ch = synth_buffer_peek();
	89	set_current_state(TASK_INTERRUPTIBLE);
	90	full_time_val = full_time->u.n.value;
6697330a	91	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	92	if (ch == '\n')
c6e3fd22 WH	93	ch = synth->procspeech;
1e441594	94	if (!synth->io_ops->synth_out(synth, ch)) {
c6e3fd22 WH	95	schedule_timeout(msecs_to_jiffies(full_time_val));
	96	continue;
	97	}
89021ecc	98	if (time_after_eq(jiffies, jiff_max) && (ch == SPACE)) {
6697330a	99	spin_lock_irqsave(&speakup_info.spinlock, flags);
c6e3fd22 WH	100	jiffy_delta_val = jiffy_delta->u.n.value;
	101	delay_time_val = delay_time->u.n.value;
	102	full_time_val = full_time->u.n.value;
6697330a	103	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
1e441594	104	if (synth->io_ops->synth_out(synth, synth->procspeech))
1e560261 WH	105	schedule_timeout(
1e560261 WH	106	msecs_to_jiffies(delay_time_val));
c6e3fd22	107	else
1e560261 WH	108	schedule_timeout(
1e560261 WH	109	msecs_to_jiffies(full_time_val));
c6e3fd22 WH	110	jiff_max = jiffies + jiffy_delta_val;
	111	}
	112	set_current_state(TASK_RUNNING);
6697330a	113	spin_lock_irqsave(&speakup_info.spinlock, flags);
c6e3fd22	114	synth_buffer_getc();
6697330a	115	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22	116	}
1e441594	117	synth->io_ops->synth_out(synth, synth->procspeech);
c6e3fd22 WH	118	}
	119	EXPORT_SYMBOL_GPL(spk_do_catch_up);
	120
c6e3fd22 WH	121	void spk_synth_flush(struct spk_synth *synth)
c6e3fd22 WH	122	{
1c597367	123	synth->io_ops->flush_buffer();
1e441594	124	synth->io_ops->synth_out(synth, synth->clear);
c6e3fd22 WH	125	}
	126	EXPORT_SYMBOL_GPL(spk_synth_flush);
	127
ca693dcd OK	128	unsigned char spk_synth_get_index(struct spk_synth *synth)
	129	{
	130	return synth->io_ops->synth_in_nowait();
	131	}
	132	EXPORT_SYMBOL_GPL(spk_synth_get_index);
	133
c6e3fd22 WH	134	int spk_synth_is_alive_nop(struct spk_synth *synth)
	135	{
	136	synth->alive = 1;
	137	return 1;
	138	}
	139	EXPORT_SYMBOL_GPL(spk_synth_is_alive_nop);
	140
	141	int spk_synth_is_alive_restart(struct spk_synth *synth)
	142	{
	143	if (synth->alive)
	144	return 1;
9176d156	145	if (spk_wait_for_xmitr(synth) > 0) {
c6e3fd22 WH	146	/* restart */
	147	synth->alive = 1;
	148	synth_printf("%s", synth->init);
	149	return 2; /* reenabled */
	150	}
	151	pr_warn("%s: can't restart synth\n", synth->long_name);
	152	return 0;
	153	}
	154	EXPORT_SYMBOL_GPL(spk_synth_is_alive_restart);
	155
	156	static void thread_wake_up(u_long data)
	157	{
	158	wake_up_interruptible_all(&speakup_event);
	159	}
	160
	161	static DEFINE_TIMER(thread_timer, thread_wake_up, 0, 0);
	162
	163	void synth_start(void)
	164	{
	165	struct var_t *trigger_time;
	166
	167	if (!synth->alive) {
	168	synth_buffer_clear();
	169	return;
	170	}
ca2beaf8	171	trigger_time = spk_get_var(TRIGGER);
c6e3fd22	172	if (!timer_pending(&thread_timer))
1e560261 WH	173	mod_timer(&thread_timer, jiffies +
1e560261 WH	174	msecs_to_jiffies(trigger_time->u.n.value));
c6e3fd22 WH	175	}
c6e3fd22 WH	176
ca2beaf8	177	void spk_do_flush(void)
c6e3fd22	178	{
8b9c012a SL	179	if (!synth)
	180	return;
	181
c6e3fd22 WH	182	speakup_info.flushing = 1;
	183	synth_buffer_clear();
	184	if (synth->alive) {
ca2beaf8 ST	185	if (spk_pitch_shift) {
	186	synth_printf("%s", spk_pitch_buff);
	187	spk_pitch_shift = 0;
c6e3fd22 WH	188	}
	189	}
	190	wake_up_interruptible_all(&speakup_event);
	191	wake_up_process(speakup_task);
	192	}
	193
	194	void synth_write(const char *buf, size_t count)
	195	{
	196	while (count--)
	197	synth_buffer_add(*buf++);
	198	synth_start();
	199	}
	200
	201	void synth_printf(const char *fmt, ...)
	202	{
	203	va_list args;
	204	unsigned char buf[160], *p;
	205	int r;
	206
	207	va_start(args, fmt);
	208	r = vsnprintf(buf, sizeof(buf), fmt, args);
	209	va_end(args);
	210	if (r > sizeof(buf) - 1)
	211	r = sizeof(buf) - 1;
	212
	213	p = buf;
	214	while (r--)
	215	synth_buffer_add(*p++);
	216	synth_start();
	217	}
	218	EXPORT_SYMBOL_GPL(synth_printf);
	219
89fc2ae8 ST	220	void synth_putwc(u16 wc)
	221	{
	222	synth_buffer_add(wc);
	223	}
	224	EXPORT_SYMBOL_GPL(synth_putwc);
	225
	226	void synth_putwc_s(u16 wc)
	227	{
	228	synth_buffer_add(wc);
	229	synth_start();
	230	}
	231	EXPORT_SYMBOL_GPL(synth_putwc_s);
	232
	233	void synth_putws(const u16 *buf)
	234	{
	235	const u16 *p;
	236
	237	for (p = buf; *p; p++)
	238	synth_buffer_add(*p);
	239	}
	240	EXPORT_SYMBOL_GPL(synth_putws);
	241
	242	void synth_putws_s(const u16 *buf)
	243	{
	244	synth_putws(buf);
	245	synth_start();
	246	}
	247	EXPORT_SYMBOL_GPL(synth_putws_s);
	248
1e560261 WH	249	static int index_count;
1e560261 WH	250	static int sentence_count;
c6e3fd22	251
ca2beaf8	252	void spk_reset_index_count(int sc)
c6e3fd22 WH	253	{
c6e3fd22 WH	254	static int first = 1;
8e69a811	255
c6e3fd22 WH	256	if (first)
	257	first = 0;
	258	else
ca693dcd	259	synth->get_index(synth);
c6e3fd22 WH	260	index_count = 0;
	261	sentence_count = sc;
	262	}
	263
	264	int synth_supports_indexing(void)
	265	{
2ffb795f	266	if (synth->get_index)
c6e3fd22 WH	267	return 1;
	268	return 0;
	269	}
	270
	271	void synth_insert_next_index(int sent_num)
	272	{
	273	int out;
8e69a811	274
c6e3fd22 WH	275	if (synth->alive) {
	276	if (sent_num == 0) {
	277	synth->indexing.currindex++;
	278	index_count++;
	279	if (synth->indexing.currindex >
	280	synth->indexing.highindex)
	281	synth->indexing.currindex =
	282	synth->indexing.lowindex;
	283	}
	284
	285	out = synth->indexing.currindex * 10 + sent_num;
	286	synth_printf(synth->indexing.command, out, out);
	287	}
	288	}
	289
ca2beaf8	290	void spk_get_index_count(int linecount, int sentcount)
c6e3fd22	291	{
ca693dcd	292	int ind = synth->get_index(synth);
8e69a811	293
c6e3fd22 WH	294	if (ind) {
	295	sentence_count = ind % 10;
	296
	297	if ((ind / 10) <= synth->indexing.currindex)
c67095ce	298	index_count = synth->indexing.currindex - (ind / 10);
c6e3fd22	299	else
1e560261	300	index_count = synth->indexing.currindex
c67095ce WF	301	- synth->indexing.lowindex
c67095ce WF	302	+ synth->indexing.highindex - (ind / 10) + 1;
c6e3fd22 WH	303	}
	304	*sentcount = sentence_count;
	305	*linecount = index_count;
	306	}
	307
	308	static struct resource synth_res;
	309
	310	int synth_request_region(unsigned long start, unsigned long n)
	311	{
	312	struct resource *parent = &ioport_resource;
8e69a811	313
c6e3fd22 WH	314	memset(&synth_res, 0, sizeof(synth_res));
	315	synth_res.name = synth->name;
	316	synth_res.start = start;
	317	synth_res.end = start + n - 1;
	318	synth_res.flags = IORESOURCE_BUSY;
	319	return request_resource(parent, &synth_res);
	320	}
	321	EXPORT_SYMBOL_GPL(synth_request_region);
	322
	323	int synth_release_region(unsigned long start, unsigned long n)
	324	{
	325	return release_resource(&synth_res);
	326	}
	327	EXPORT_SYMBOL_GPL(synth_release_region);
	328
	329	struct var_t synth_time_vars[] = {
1e560261 WH	330	{ DELAY, .u.n = {NULL, 100, 100, 2000, 0, 0, NULL } },
	331	{ TRIGGER, .u.n = {NULL, 20, 10, 2000, 0, 0, NULL } },
	332	{ JIFFY, .u.n = {NULL, 50, 20, 200, 0, 0, NULL } },
	333	{ FULL, .u.n = {NULL, 400, 200, 60000, 0, 0, NULL } },
c6e3fd22 WH	334	V_LAST_VAR
	335	};
	336
	337	/* called by: speakup_init() */
	338	int synth_init(char *synth_name)
	339	{
	340	int i;
	341	int ret = 0;
	342	struct spk_synth *synth = NULL;
	343
2ffb795f	344	if (!synth_name)
c6e3fd22 WH	345	return 0;
	346
	347	if (strcmp(synth_name, "none") == 0) {
	348	mutex_lock(&spk_mutex);
	349	synth_release();
	350	mutex_unlock(&spk_mutex);
	351	return 0;
	352	}
	353
	354	mutex_lock(&spk_mutex);
	355	/* First, check if we already have it loaded. */
2ffb795f	356	for (i = 0; i < MAXSYNTHS && synths[i]; i++)
c6e3fd22 WH	357	if (strcmp(synths[i]->name, synth_name) == 0)
	358	synth = synths[i];
	359
	360	/* If we got one, initialize it now. */
	361	if (synth)
	362	ret = do_synth_init(synth);
	363	else
	364	ret = -ENODEV;
	365	mutex_unlock(&spk_mutex);
	366
	367	return ret;
	368	}
	369
	370	/* called by: synth_add() */
	371	static int do_synth_init(struct spk_synth *in_synth)
	372	{
	373	struct var_t *var;
	374
	375	synth_release();
	376	if (in_synth->checkval != SYNTH_CHECK)
	377	return -EINVAL;
	378	synth = in_synth;
	379	synth->alive = 0;
	380	pr_warn("synth probe\n");
	381	if (synth->probe(synth) < 0) {
	382	pr_warn("%s: device probe failed\n", in_synth->name);
	383	synth = NULL;
	384	return -ENODEV;
	385	}
	386	synth_time_vars[0].u.n.value =
	387	synth_time_vars[0].u.n.default_val = synth->delay;
	388	synth_time_vars[1].u.n.value =
	389	synth_time_vars[1].u.n.default_val = synth->trigger;
	390	synth_time_vars[2].u.n.value =
	391	synth_time_vars[2].u.n.default_val = synth->jiffies;
	392	synth_time_vars[3].u.n.value =
	393	synth_time_vars[3].u.n.default_val = synth->full;
	394	synth_printf("%s", synth->init);
1e560261 WH	395	for (var = synth->vars;
1e560261 WH	396	(var->var_id >= 0) && (var->var_id < MAXVARS); var++)
c6e3fd22	397	speakup_register_var(var);
ca2beaf8	398	if (!spk_quiet_boot)
c6e3fd22	399	synth_printf("%s found\n", synth->long_name);
904cf12d OH	400	if (synth->attributes.name &&
904cf12d OH	401	sysfs_create_group(speakup_kobj, &synth->attributes) < 0)
c6e3fd22 WH	402	return -ENOMEM;
	403	synth_flags = synth->flags;
	404	wake_up_interruptible_all(&speakup_event);
	405	if (speakup_task)
	406	wake_up_process(speakup_task);
	407	return 0;
	408	}
	409
	410	void synth_release(void)
	411	{
	412	struct var_t *var;
	413	unsigned long flags;
	414
2ffb795f	415	if (!synth)
c6e3fd22	416	return;
6697330a	417	spin_lock_irqsave(&speakup_info.spinlock, flags);
c6e3fd22 WH	418	pr_info("releasing synth %s\n", synth->name);
	419	synth->alive = 0;
	420	del_timer(&thread_timer);
6697330a	421	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22	422	if (synth->attributes.name)
3adc4aae	423	sysfs_remove_group(speakup_kobj, &synth->attributes);
c6e3fd22 WH	424	for (var = synth->vars; var->var_id != MAXVARS; var++)
c6e3fd22 WH	425	speakup_unregister_var(var->var_id);
c6e3fd22 WH	426	synth->release();
	427	synth = NULL;
	428	}
	429
	430	/* called by: all_driver_init() */
	431	int synth_add(struct spk_synth *in_synth)
	432	{
	433	int i;
	434	int status = 0;
8e69a811	435
c6e3fd22	436	mutex_lock(&spk_mutex);
2ffb795f	437	for (i = 0; i < MAXSYNTHS && synths[i]; i++)
c6e3fd22 WH	438	/* synth_remove() is responsible for rotating the array down */
	439	if (in_synth == synths[i]) {
	440	mutex_unlock(&spk_mutex);
	441	return 0;
	442	}
	443	if (i == MAXSYNTHS) {
	444	pr_warn("Error: attempting to add a synth past end of array\n");
	445	mutex_unlock(&spk_mutex);
	446	return -1;
	447	}
e4dd8bca	448
c6e3fd22 WH	449	if (in_synth->startup)
c6e3fd22 WH	450	status = do_synth_init(in_synth);
e4dd8bca OK	451
	452	if (!status) {
	453	synths[i++] = in_synth;
	454	synths[i] = NULL;
	455	}
	456
c6e3fd22 WH	457	mutex_unlock(&spk_mutex);
	458	return status;
	459	}
	460	EXPORT_SYMBOL_GPL(synth_add);
	461
	462	void synth_remove(struct spk_synth *in_synth)
	463	{
	464	int i;
8e69a811	465
c6e3fd22 WH	466	mutex_lock(&spk_mutex);
	467	if (synth == in_synth)
	468	synth_release();
2ffb795f	469	for (i = 0; synths[i]; i++) {
c6e3fd22 WH	470	if (in_synth == synths[i])
	471	break;
	472	}
2ffb795f	473	for ( ; synths[i]; i++) /* compress table */
c67095ce	474	synths[i] = synths[i + 1];
c6e3fd22 WH	475	module_status = 0;
	476	mutex_unlock(&spk_mutex);
	477	}
	478	EXPORT_SYMBOL_GPL(synth_remove);
	479
c67095ce	480	short spk_punc_masks[] = { 0, SOME, MOST, PUNC, PUNC \| B_SYM };