[mirror_ubuntu-hirsute-kernel.git] / drivers / accessibility / speakup / speakup_acntpc.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * written by: Kirk Reiser <kirk@braille.uwo.ca>
 * this version considerably modified by David Borowski, david575@rogers.com
 *
 * Copyright (C) 1998-99  Kirk Reiser.
 * Copyright (C) 2003 David Borowski.
 *
 * this code is specificly written as a driver for the speakup screenreview
 * package and is not a general device driver.
 * This driver is for the Aicom Acent PC internal synthesizer.
 */

#include <linux/jiffies.h>
#include <linux/sched.h>
#include <linux/timer.h>
#include <linux/kthread.h>

#include "spk_priv.h"
#include "serialio.h"
#include "speakup.h"
#include "speakup_acnt.h" /* local header file for Accent values */

#define DRV_VERSION "2.10"
#define PROCSPEECH '\r'

static int synth_probe(struct spk_synth *synth);
static void accent_release(void);
static const char *synth_immediate(struct spk_synth *synth, const char *buf);
static void do_catch_up(struct spk_synth *synth);
static void synth_flush(struct spk_synth *synth);

static int synth_port_control;
static int port_forced;
static unsigned int synth_portlist[] = { 0x2a8, 0 };

static struct var_t vars[] = {
	{ CAPS_START, .u.s = {"\033P8" } },
	{ CAPS_STOP, .u.s = {"\033P5" } },
	{ RATE, .u.n = {"\033R%c", 9, 0, 17, 0, 0, "0123456789abcdefgh" } },
	{ PITCH, .u.n = {"\033P%d", 5, 0, 9, 0, 0, NULL } },
	{ VOL, .u.n = {"\033A%d", 5, 0, 9, 0, 0, NULL } },
	{ TONE, .u.n = {"\033V%d", 5, 0, 9, 0, 0, NULL } },
	{ DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
	V_LAST_VAR
};

/*
 * These attributes will appear in /sys/accessibility/speakup/acntpc.
 */
static struct kobj_attribute caps_start_attribute =
	__ATTR(caps_start, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute caps_stop_attribute =
	__ATTR(caps_stop, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute pitch_attribute =
	__ATTR(pitch, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute rate_attribute =
	__ATTR(rate, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute tone_attribute =
	__ATTR(tone, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute vol_attribute =
	__ATTR(vol, 0644, spk_var_show, spk_var_store);

static struct kobj_attribute delay_time_attribute =
	__ATTR(delay_time, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute direct_attribute =
	__ATTR(direct, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute full_time_attribute =
	__ATTR(full_time, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute jiffy_delta_attribute =
	__ATTR(jiffy_delta, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute trigger_time_attribute =
	__ATTR(trigger_time, 0644, spk_var_show, spk_var_store);

/*
 * Create a group of attributes so that we can create and destroy them all
 * at once.
 */
static struct attribute *synth_attrs[] = {
	&caps_start_attribute.attr,
	&caps_stop_attribute.attr,
	&pitch_attribute.attr,
	&rate_attribute.attr,
	&tone_attribute.attr,
	&vol_attribute.attr,
	&delay_time_attribute.attr,
	&direct_attribute.attr,
	&full_time_attribute.attr,
	&jiffy_delta_attribute.attr,
	&trigger_time_attribute.attr,
	NULL,	/* need to NULL terminate the list of attributes */
};

static struct spk_synth synth_acntpc = {
	.name = "acntpc",
	.version = DRV_VERSION,
	.long_name = "Accent PC",
	.init = "\033=X \033Oi\033T2\033=M\033N1\n",
	.procspeech = PROCSPEECH,
	.clear = SYNTH_CLEAR,
	.delay = 500,
	.trigger = 50,
	.jiffies = 50,
	.full = 1000,
	.startup = SYNTH_START,
	.checkval = SYNTH_CHECK,
	.vars = vars,
	.io_ops = &spk_serial_io_ops,
	.probe = synth_probe,
	.release = accent_release,
	.synth_immediate = synth_immediate,
	.catch_up = do_catch_up,
	.flush = synth_flush,
	.is_alive = spk_synth_is_alive_nop,
	.synth_adjust = NULL,
	.read_buff_add = NULL,
	.get_index = NULL,
	.indexing = {
		.command = NULL,
		.lowindex = 0,
		.highindex = 0,
		.currindex = 0,
	},
	.attributes = {
		.attrs = synth_attrs,
		.name = "acntpc",
	},
};

static inline bool synth_writable(void)
{
	return inb_p(synth_port_control) & SYNTH_WRITABLE;
}

static inline bool synth_full(void)
{
	return inb_p(speakup_info.port_tts + UART_RX) == 'F';
}

static const char *synth_immediate(struct spk_synth *synth, const char *buf)
{
	u_char ch;

	while ((ch = *buf)) {
		int timeout = SPK_XMITR_TIMEOUT;

		if (ch == '\n')
			ch = PROCSPEECH;
		if (synth_full())
			return buf;
		while (synth_writable()) {
			if (!--timeout)
				return buf;
			udelay(1);
		}
		outb_p(ch, speakup_info.port_tts);
		buf++;
	}
	return NULL;
}

static void do_catch_up(struct spk_synth *synth)
{
	u_char ch;
	unsigned long flags;
	unsigned long jiff_max;
	int timeout;
	int delay_time_val;
	int jiffy_delta_val;
	int full_time_val;
	struct var_t *delay_time;
	struct var_t *full_time;
	struct var_t *jiffy_delta;

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

	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;
		}
		set_current_state(TASK_INTERRUPTIBLE);
		full_time_val = full_time->u.n.value;
		spin_unlock_irqrestore(&speakup_info.spinlock, flags);
		if (synth_full()) {
			schedule_timeout(msecs_to_jiffies(full_time_val));
			continue;
		}
		set_current_state(TASK_RUNNING);
		timeout = SPK_XMITR_TIMEOUT;
		while (synth_writable()) {
			if (!--timeout)
				break;
			udelay(1);
		}
		spin_lock_irqsave(&speakup_info.spinlock, flags);
		ch = synth_buffer_getc();
		spin_unlock_irqrestore(&speakup_info.spinlock, flags);
		if (ch == '\n')
			ch = PROCSPEECH;
		outb_p(ch, speakup_info.port_tts);
		if (time_after_eq(jiffies, jiff_max) && ch == SPACE) {
			timeout = SPK_XMITR_TIMEOUT;
			while (synth_writable()) {
				if (!--timeout)
					break;
				udelay(1);
			}
			outb_p(PROCSPEECH, speakup_info.port_tts);
			spin_lock_irqsave(&speakup_info.spinlock, flags);
			jiffy_delta_val = jiffy_delta->u.n.value;
			delay_time_val = delay_time->u.n.value;
			spin_unlock_irqrestore(&speakup_info.spinlock, flags);
			schedule_timeout(msecs_to_jiffies(delay_time_val));
			jiff_max = jiffies + jiffy_delta_val;
		}
	}
	timeout = SPK_XMITR_TIMEOUT;
	while (synth_writable()) {
		if (!--timeout)
			break;
		udelay(1);
	}
	outb_p(PROCSPEECH, speakup_info.port_tts);
}

static void synth_flush(struct spk_synth *synth)
{
	outb_p(SYNTH_CLEAR, speakup_info.port_tts);
}

static int synth_probe(struct spk_synth *synth)
{
	unsigned int port_val = 0;
	int i = 0;

	pr_info("Probing for %s.\n", synth->long_name);
	if (port_forced) {
		speakup_info.port_tts = port_forced;
		pr_info("probe forced to %x by kernel command line\n",
			speakup_info.port_tts);
		if (synth_request_region(speakup_info.port_tts - 1,
					 SYNTH_IO_EXTENT)) {
			pr_warn("sorry, port already reserved\n");
			return -EBUSY;
		}
		port_val = inw(speakup_info.port_tts - 1);
		synth_port_control = speakup_info.port_tts - 1;
	} else {
		for (i = 0; synth_portlist[i]; i++) {
			if (synth_request_region(synth_portlist[i],
						 SYNTH_IO_EXTENT)) {
				pr_warn
				    ("request_region: failed with 0x%x, %d\n",
				     synth_portlist[i], SYNTH_IO_EXTENT);
				continue;
			}
			port_val = inw(synth_portlist[i]) & 0xfffc;
			if (port_val == 0x53fc) {
				/* 'S' and out&input bits */
				synth_port_control = synth_portlist[i];
				speakup_info.port_tts = synth_port_control + 1;
				break;
			}
		}
	}
	port_val &= 0xfffc;
	if (port_val != 0x53fc) {
		/* 'S' and out&input bits */
		pr_info("%s: not found\n", synth->long_name);
		synth_release_region(synth_port_control, SYNTH_IO_EXTENT);
		synth_port_control = 0;
		return -ENODEV;
	}
	pr_info("%s: %03x-%03x, driver version %s,\n", synth->long_name,
		synth_port_control, synth_port_control + SYNTH_IO_EXTENT - 1,
		synth->version);
	synth->alive = 1;
	return 0;
}

static void accent_release(void)
{
	spk_stop_serial_interrupt();
	if (speakup_info.port_tts)
		synth_release_region(speakup_info.port_tts - 1,
				     SYNTH_IO_EXTENT);
	speakup_info.port_tts = 0;
}

module_param_hw_named(port, port_forced, int, ioport, 0444);
module_param_named(start, synth_acntpc.startup, short, 0444);

MODULE_PARM_DESC(port, "Set the port for the synthesizer (override probing).");
MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");

module_spk_synth(synth_acntpc);

MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
MODULE_AUTHOR("David Borowski");
MODULE_DESCRIPTION("Speakup support for Accent PC synthesizer");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
Commit	Line	Data
64969228	1	// SPDX-License-Identifier: GPL-2.0+
c6e3fd22 WH	2	/*
	3	* 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	*
c6e3fd22 WH	9	* this code is specificly written as a driver for the speakup screenreview
	10	* package and is not a general device driver.
	11	* This driver is for the Aicom Acent PC internal synthesizer.
	12	*/
	13
	14	#include <linux/jiffies.h>
	15	#include <linux/sched.h>
	16	#include <linux/timer.h>
	17	#include <linux/kthread.h>
	18
	19	#include "spk_priv.h"
	20	#include "serialio.h"
	21	#include "speakup.h"
	22	#include "speakup_acnt.h" /* local header file for Accent values */
	23
	24	#define DRV_VERSION "2.10"
c6e3fd22 WH	25	#define PROCSPEECH '\r'
	26
	27	static int synth_probe(struct spk_synth *synth);
	28	static void accent_release(void);
	29	static const char synth_immediate(struct spk_synth synth, const char *buf);
	30	static void do_catch_up(struct spk_synth *synth);
	31	static void synth_flush(struct spk_synth *synth);
	32
	33	static int synth_port_control;
	34	static int port_forced;
	35	static unsigned int synth_portlist[] = { 0x2a8, 0 };
	36
	37	static struct var_t vars[] = {
bf4a4bac CB	38	{ CAPS_START, .u.s = {"\033P8" } },
	39	{ CAPS_STOP, .u.s = {"\033P5" } },
	40	{ RATE, .u.n = {"\033R%c", 9, 0, 17, 0, 0, "0123456789abcdefgh" } },
	41	{ PITCH, .u.n = {"\033P%d", 5, 0, 9, 0, 0, NULL } },
	42	{ VOL, .u.n = {"\033A%d", 5, 0, 9, 0, 0, NULL } },
	43	{ TONE, .u.n = {"\033V%d", 5, 0, 9, 0, 0, NULL } },
	44	{ DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
c6e3fd22 WH	45	V_LAST_VAR
	46	};
	47
	48	/*
	49	* These attributes will appear in /sys/accessibility/speakup/acntpc.
	50	*/
	51	static struct kobj_attribute caps_start_attribute =
73c3700e	52	__ATTR(caps_start, 0644, spk_var_show, spk_var_store);
c6e3fd22	53	static struct kobj_attribute caps_stop_attribute =
73c3700e	54	__ATTR(caps_stop, 0644, spk_var_show, spk_var_store);
c6e3fd22	55	static struct kobj_attribute pitch_attribute =
73c3700e	56	__ATTR(pitch, 0644, spk_var_show, spk_var_store);
c6e3fd22	57	static struct kobj_attribute rate_attribute =
73c3700e	58	__ATTR(rate, 0644, spk_var_show, spk_var_store);
c6e3fd22	59	static struct kobj_attribute tone_attribute =
73c3700e	60	__ATTR(tone, 0644, spk_var_show, spk_var_store);
c6e3fd22	61	static struct kobj_attribute vol_attribute =
73c3700e	62	__ATTR(vol, 0644, spk_var_show, spk_var_store);
c6e3fd22 WH	63
c6e3fd22 WH	64	static struct kobj_attribute delay_time_attribute =
73c3700e	65	__ATTR(delay_time, 0644, spk_var_show, spk_var_store);
c6e3fd22	66	static struct kobj_attribute direct_attribute =
73c3700e	67	__ATTR(direct, 0644, spk_var_show, spk_var_store);
c6e3fd22	68	static struct kobj_attribute full_time_attribute =
73c3700e	69	__ATTR(full_time, 0644, spk_var_show, spk_var_store);
c6e3fd22	70	static struct kobj_attribute jiffy_delta_attribute =
73c3700e	71	__ATTR(jiffy_delta, 0644, spk_var_show, spk_var_store);
c6e3fd22	72	static struct kobj_attribute trigger_time_attribute =
73c3700e	73	__ATTR(trigger_time, 0644, spk_var_show, spk_var_store);
c6e3fd22 WH	74
	75	/*
	76	* Create a group of attributes so that we can create and destroy them all
	77	* at once.
	78	*/
	79	static struct attribute *synth_attrs[] = {
	80	&caps_start_attribute.attr,
	81	&caps_stop_attribute.attr,
	82	&pitch_attribute.attr,
	83	&rate_attribute.attr,
	84	&tone_attribute.attr,
	85	&vol_attribute.attr,
	86	&delay_time_attribute.attr,
	87	&direct_attribute.attr,
	88	&full_time_attribute.attr,
	89	&jiffy_delta_attribute.attr,
	90	&trigger_time_attribute.attr,
	91	NULL, /* need to NULL terminate the list of attributes */
	92	};
	93
	94	static struct spk_synth synth_acntpc = {
	95	.name = "acntpc",
	96	.version = DRV_VERSION,
	97	.long_name = "Accent PC",
	98	.init = "\033=X \033Oi\033T2\033=M\033N1\n",
	99	.procspeech = PROCSPEECH,
	100	.clear = SYNTH_CLEAR,
	101	.delay = 500,
	102	.trigger = 50,
	103	.jiffies = 50,
	104	.full = 1000,
	105	.startup = SYNTH_START,
	106	.checkval = SYNTH_CHECK,
	107	.vars = vars,
1e441594	108	.io_ops = &spk_serial_io_ops,
c6e3fd22 WH	109	.probe = synth_probe,
	110	.release = accent_release,
	111	.synth_immediate = synth_immediate,
	112	.catch_up = do_catch_up,
	113	.flush = synth_flush,
	114	.is_alive = spk_synth_is_alive_nop,
	115	.synth_adjust = NULL,
	116	.read_buff_add = NULL,
	117	.get_index = NULL,
	118	.indexing = {
	119	.command = NULL,
	120	.lowindex = 0,
	121	.highindex = 0,
	122	.currindex = 0,
	123	},
	124	.attributes = {
	125	.attrs = synth_attrs,
	126	.name = "acntpc",
	127	},
	128	};
	129
bf4a4bac CB	130	static inline bool synth_writable(void)
	131	{
	132	return inb_p(synth_port_control) & SYNTH_WRITABLE;
	133	}
	134
	135	static inline bool synth_full(void)
	136	{
	137	return inb_p(speakup_info.port_tts + UART_RX) == 'F';
	138	}
	139
c6e3fd22 WH	140	static const char synth_immediate(struct spk_synth synth, const char *buf)
	141	{
	142	u_char ch;
8e69a811	143
c6e3fd22 WH	144	while ((ch = *buf)) {
c6e3fd22 WH	145	int timeout = SPK_XMITR_TIMEOUT;
8e69a811	146
c6e3fd22 WH	147	if (ch == '\n')
	148	ch = PROCSPEECH;
	149	if (synth_full())
	150	return buf;
	151	while (synth_writable()) {
	152	if (!--timeout)
	153	return buf;
	154	udelay(1);
	155	}
	156	outb_p(ch, speakup_info.port_tts);
	157	buf++;
	158	}
dbbe6863	159	return NULL;
c6e3fd22 WH	160	}
	161
	162	static void do_catch_up(struct spk_synth *synth)
	163	{
	164	u_char ch;
	165	unsigned long flags;
	166	unsigned long jiff_max;
	167	int timeout;
	168	int delay_time_val;
	169	int jiffy_delta_val;
	170	int full_time_val;
	171	struct var_t *delay_time;
	172	struct var_t *full_time;
	173	struct var_t *jiffy_delta;
	174
ca2beaf8 ST	175	jiffy_delta = spk_get_var(JIFFY);
	176	delay_time = spk_get_var(DELAY);
	177	full_time = spk_get_var(FULL);
c6e3fd22	178
995b9040	179	spin_lock_irqsave(&speakup_info.spinlock, flags);
c6e3fd22	180	jiffy_delta_val = jiffy_delta->u.n.value;
995b9040	181	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	182
	183	jiff_max = jiffies + jiffy_delta_val;
	184	while (!kthread_should_stop()) {
995b9040	185	spin_lock_irqsave(&speakup_info.spinlock, flags);
c6e3fd22 WH	186	if (speakup_info.flushing) {
c6e3fd22 WH	187	speakup_info.flushing = 0;
995b9040	188	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	189	synth->flush(synth);
	190	continue;
	191	}
89fc2ae8	192	synth_buffer_skip_nonlatin1();
c6e3fd22	193	if (synth_buffer_empty()) {
995b9040	194	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	195	break;
	196	}
	197	set_current_state(TASK_INTERRUPTIBLE);
	198	full_time_val = full_time->u.n.value;
995b9040	199	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	200	if (synth_full()) {
	201	schedule_timeout(msecs_to_jiffies(full_time_val));
	202	continue;
	203	}
	204	set_current_state(TASK_RUNNING);
	205	timeout = SPK_XMITR_TIMEOUT;
	206	while (synth_writable()) {
	207	if (!--timeout)
	208	break;
	209	udelay(1);
	210	}
995b9040	211	spin_lock_irqsave(&speakup_info.spinlock, flags);
c6e3fd22	212	ch = synth_buffer_getc();
995b9040	213	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	214	if (ch == '\n')
	215	ch = PROCSPEECH;
	216	outb_p(ch, speakup_info.port_tts);
75b76b47	217	if (time_after_eq(jiffies, jiff_max) && ch == SPACE) {
c6e3fd22 WH	218	timeout = SPK_XMITR_TIMEOUT;
	219	while (synth_writable()) {
	220	if (!--timeout)
	221	break;
	222	udelay(1);
	223	}
	224	outb_p(PROCSPEECH, speakup_info.port_tts);
995b9040	225	spin_lock_irqsave(&speakup_info.spinlock, flags);
c6e3fd22 WH	226	jiffy_delta_val = jiffy_delta->u.n.value;
c6e3fd22 WH	227	delay_time_val = delay_time->u.n.value;
995b9040	228	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22	229	schedule_timeout(msecs_to_jiffies(delay_time_val));
e3bab5eb	230	jiff_max = jiffies + jiffy_delta_val;
c6e3fd22 WH	231	}
	232	}
	233	timeout = SPK_XMITR_TIMEOUT;
	234	while (synth_writable()) {
	235	if (!--timeout)
	236	break;
	237	udelay(1);
	238	}
	239	outb_p(PROCSPEECH, speakup_info.port_tts);
	240	}
	241
	242	static void synth_flush(struct spk_synth *synth)
	243	{
	244	outb_p(SYNTH_CLEAR, speakup_info.port_tts);
	245	}
	246
	247	static int synth_probe(struct spk_synth *synth)
	248	{
	249	unsigned int port_val = 0;
	250	int i = 0;
8e69a811	251
c6e3fd22 WH	252	pr_info("Probing for %s.\n", synth->long_name);
	253	if (port_forced) {
	254	speakup_info.port_tts = port_forced;
	255	pr_info("probe forced to %x by kernel command line\n",
65bf4ea1	256	speakup_info.port_tts);
e3bab5eb	257	if (synth_request_region(speakup_info.port_tts - 1,
65bf4ea1	258	SYNTH_IO_EXTENT)) {
c6e3fd22 WH	259	pr_warn("sorry, port already reserved\n");
	260	return -EBUSY;
	261	}
e3bab5eb VR	262	port_val = inw(speakup_info.port_tts - 1);
e3bab5eb VR	263	synth_port_control = speakup_info.port_tts - 1;
c6e3fd22 WH	264	} else {
	265	for (i = 0; synth_portlist[i]; i++) {
	266	if (synth_request_region(synth_portlist[i],
65bf4ea1	267	SYNTH_IO_EXTENT)) {
bf4a4bac CB	268	pr_warn
	269	("request_region: failed with 0x%x, %d\n",
	270	synth_portlist[i], SYNTH_IO_EXTENT);
c6e3fd22 WH	271	continue;
	272	}
	273	port_val = inw(synth_portlist[i]) & 0xfffc;
	274	if (port_val == 0x53fc) {
	275	/* 'S' and out&input bits */
	276	synth_port_control = synth_portlist[i];
205931ea	277	speakup_info.port_tts = synth_port_control + 1;
c6e3fd22 WH	278	break;
	279	}
	280	}
	281	}
	282	port_val &= 0xfffc;
	283	if (port_val != 0x53fc) {
	284	/* 'S' and out&input bits */
	285	pr_info("%s: not found\n", synth->long_name);
	286	synth_release_region(synth_port_control, SYNTH_IO_EXTENT);
	287	synth_port_control = 0;
	288	return -ENODEV;
	289	}
	290	pr_info("%s: %03x-%03x, driver version %s,\n", synth->long_name,
e3bab5eb	291	synth_port_control, synth_port_control + SYNTH_IO_EXTENT - 1,
c6e3fd22 WH	292	synth->version);
	293	synth->alive = 1;
	294	return 0;
	295	}
	296
	297	static void accent_release(void)
	298	{
a50ef316	299	spk_stop_serial_interrupt();
c6e3fd22	300	if (speakup_info.port_tts)
8d0f5a65 IV	301	synth_release_region(speakup_info.port_tts - 1,
8d0f5a65 IV	302	SYNTH_IO_EXTENT);
c6e3fd22 WH	303	speakup_info.port_tts = 0;
	304	}
	305
dbf05cb0	306	module_param_hw_named(port, port_forced, int, ioport, 0444);
73c3700e	307	module_param_named(start, synth_acntpc.startup, short, 0444);
c6e3fd22 WH	308
	309	MODULE_PARM_DESC(port, "Set the port for the synthesizer (override probing).");
	310	MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
	311
ae89facc	312	module_spk_synth(synth_acntpc);
c6e3fd22	313
c6e3fd22 WH	314	MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
	315	MODULE_AUTHOR("David Borowski");
	316	MODULE_DESCRIPTION("Speakup support for Accent PC synthesizer");
	317	MODULE_LICENSE("GPL");
	318	MODULE_VERSION(DRV_VERSION);
	319