[deliverable/linux.git] / drivers / staging / speakup / speakup_acntpc.c

/*
 * 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 program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * 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, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute caps_stop_attribute =
	__ATTR(caps_stop, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute pitch_attribute =
	__ATTR(pitch, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute rate_attribute =
	__ATTR(rate, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute tone_attribute =
	__ATTR(tone, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute vol_attribute =
	__ATTR(vol, USER_RW, spk_var_show, spk_var_store);

static struct kobj_attribute delay_time_attribute =
	__ATTR(delay_time, ROOT_W, spk_var_show, spk_var_store);
static struct kobj_attribute direct_attribute =
	__ATTR(direct, USER_RW, spk_var_show, spk_var_store);
static struct kobj_attribute full_time_attribute =
	__ATTR(full_time, ROOT_W, spk_var_show, spk_var_store);
static struct kobj_attribute jiffy_delta_attribute =
	__ATTR(jiffy_delta, ROOT_W, spk_var_show, spk_var_store);
static struct kobj_attribute trigger_time_attribute =
	__ATTR(trigger_time, ROOT_W, 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,
	.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;
		}
		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)
{
	if (speakup_info.port_tts)
		synth_release_region(speakup_info.port_tts-1, SYNTH_IO_EXTENT);
	speakup_info.port_tts = 0;
}

module_param_named(port, port_forced, int, S_IRUGO);
module_param_named(start, synth_acntpc.startup, short, S_IRUGO);

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

static int __init acntpc_init(void)
{
	return synth_add(&synth_acntpc);
}

static void __exit acntpc_exit(void)
{
	synth_remove(&synth_acntpc);
}

module_init(acntpc_init);
module_exit(acntpc_exit);
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
c6e3fd22 WH	1	/*
	2	* written by: Kirk Reiser <kirk@braille.uwo.ca>
	3	* this version considerably modified by David Borowski, david575@rogers.com
	4	*
	5	* Copyright (C) 1998-99 Kirk Reiser.
	6	* Copyright (C) 2003 David Borowski.
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	21	*
	22	* this code is specificly written as a driver for the speakup screenreview
	23	* package and is not a general device driver.
	24	* This driver is for the Aicom Acent PC internal synthesizer.
	25	*/
	26
	27	#include <linux/jiffies.h>
	28	#include <linux/sched.h>
	29	#include <linux/timer.h>
	30	#include <linux/kthread.h>
	31
	32	#include "spk_priv.h"
	33	#include "serialio.h"
	34	#include "speakup.h"
	35	#include "speakup_acnt.h" /* local header file for Accent values */
	36
	37	#define DRV_VERSION "2.10"
c6e3fd22 WH	38	#define PROCSPEECH '\r'
	39
	40	static int synth_probe(struct spk_synth *synth);
	41	static void accent_release(void);
	42	static const char synth_immediate(struct spk_synth synth, const char *buf);
	43	static void do_catch_up(struct spk_synth *synth);
	44	static void synth_flush(struct spk_synth *synth);
	45
	46	static int synth_port_control;
	47	static int port_forced;
	48	static unsigned int synth_portlist[] = { 0x2a8, 0 };
	49
	50	static struct var_t vars[] = {
bf4a4bac CB	51	{ CAPS_START, .u.s = {"\033P8" } },
	52	{ CAPS_STOP, .u.s = {"\033P5" } },
	53	{ RATE, .u.n = {"\033R%c", 9, 0, 17, 0, 0, "0123456789abcdefgh" } },
	54	{ PITCH, .u.n = {"\033P%d", 5, 0, 9, 0, 0, NULL } },
	55	{ VOL, .u.n = {"\033A%d", 5, 0, 9, 0, 0, NULL } },
	56	{ TONE, .u.n = {"\033V%d", 5, 0, 9, 0, 0, NULL } },
	57	{ DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
c6e3fd22 WH	58	V_LAST_VAR
	59	};
	60
	61	/*
	62	* These attributes will appear in /sys/accessibility/speakup/acntpc.
	63	*/
	64	static struct kobj_attribute caps_start_attribute =
	65	__ATTR(caps_start, USER_RW, spk_var_show, spk_var_store);
	66	static struct kobj_attribute caps_stop_attribute =
	67	__ATTR(caps_stop, USER_RW, spk_var_show, spk_var_store);
	68	static struct kobj_attribute pitch_attribute =
	69	__ATTR(pitch, USER_RW, spk_var_show, spk_var_store);
	70	static struct kobj_attribute rate_attribute =
	71	__ATTR(rate, USER_RW, spk_var_show, spk_var_store);
	72	static struct kobj_attribute tone_attribute =
	73	__ATTR(tone, USER_RW, spk_var_show, spk_var_store);
	74	static struct kobj_attribute vol_attribute =
	75	__ATTR(vol, USER_RW, spk_var_show, spk_var_store);
	76
	77	static struct kobj_attribute delay_time_attribute =
	78	__ATTR(delay_time, ROOT_W, spk_var_show, spk_var_store);
	79	static struct kobj_attribute direct_attribute =
	80	__ATTR(direct, USER_RW, spk_var_show, spk_var_store);
	81	static struct kobj_attribute full_time_attribute =
	82	__ATTR(full_time, ROOT_W, spk_var_show, spk_var_store);
	83	static struct kobj_attribute jiffy_delta_attribute =
	84	__ATTR(jiffy_delta, ROOT_W, spk_var_show, spk_var_store);
	85	static struct kobj_attribute trigger_time_attribute =
	86	__ATTR(trigger_time, ROOT_W, spk_var_show, spk_var_store);
	87
	88	/*
	89	* Create a group of attributes so that we can create and destroy them all
	90	* at once.
	91	*/
	92	static struct attribute *synth_attrs[] = {
	93	&caps_start_attribute.attr,
	94	&caps_stop_attribute.attr,
	95	&pitch_attribute.attr,
	96	&rate_attribute.attr,
	97	&tone_attribute.attr,
	98	&vol_attribute.attr,
	99	&delay_time_attribute.attr,
	100	&direct_attribute.attr,
	101	&full_time_attribute.attr,
	102	&jiffy_delta_attribute.attr,
	103	&trigger_time_attribute.attr,
	104	NULL, /* need to NULL terminate the list of attributes */
	105	};
	106
	107	static struct spk_synth synth_acntpc = {
	108	.name = "acntpc",
	109	.version = DRV_VERSION,
	110	.long_name = "Accent PC",
	111	.init = "\033=X \033Oi\033T2\033=M\033N1\n",
	112	.procspeech = PROCSPEECH,
	113	.clear = SYNTH_CLEAR,
	114	.delay = 500,
	115	.trigger = 50,
	116	.jiffies = 50,
	117	.full = 1000,
	118	.startup = SYNTH_START,
	119	.checkval = SYNTH_CHECK,
	120	.vars = vars,
	121	.probe = synth_probe,
122	.release = accent_release,
123	.synth_immediate = synth_immediate,
124	.catch_up = do_catch_up,
125	.flush = synth_flush,
126	.is_alive = spk_synth_is_alive_nop,
127	.synth_adjust = NULL,
128	.read_buff_add = NULL,
129	.get_index = NULL,
130	.indexing = {
131	.command = NULL,
132	.lowindex = 0,
133	.highindex = 0,
134	.currindex = 0,
135	},
136	.attributes = {
137	.attrs = synth_attrs,
138	.name = "acntpc",
139	},
140	};
141
bf4a4bac CB	142	static inline bool synth_writable(void)
	143	{
	144	return inb_p(synth_port_control) & SYNTH_WRITABLE;
	145	}
	146
	147	static inline bool synth_full(void)
	148	{
	149	return inb_p(speakup_info.port_tts + UART_RX) == 'F';
	150	}
	151
c6e3fd22 WH	152	static const char synth_immediate(struct spk_synth synth, const char *buf)
	153	{
	154	u_char ch;
	155	while ((ch = *buf)) {
	156	int timeout = SPK_XMITR_TIMEOUT;
	157	if (ch == '\n')
	158	ch = PROCSPEECH;
	159	if (synth_full())
	160	return buf;
	161	while (synth_writable()) {
	162	if (!--timeout)
	163	return buf;
	164	udelay(1);
	165	}
	166	outb_p(ch, speakup_info.port_tts);
	167	buf++;
	168	}
dbbe6863	169	return NULL;
c6e3fd22 WH	170	}
	171
	172	static void do_catch_up(struct spk_synth *synth)
	173	{
	174	u_char ch;
	175	unsigned long flags;
	176	unsigned long jiff_max;
	177	int timeout;
	178	int delay_time_val;
	179	int jiffy_delta_val;
	180	int full_time_val;
	181	struct var_t *delay_time;
	182	struct var_t *full_time;
	183	struct var_t *jiffy_delta;
	184
ca2beaf8 ST	185	jiffy_delta = spk_get_var(JIFFY);
	186	delay_time = spk_get_var(DELAY);
	187	full_time = spk_get_var(FULL);
c6e3fd22	188
995b9040	189	spin_lock_irqsave(&speakup_info.spinlock, flags);
c6e3fd22	190	jiffy_delta_val = jiffy_delta->u.n.value;
995b9040	191	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	192
	193	jiff_max = jiffies + jiffy_delta_val;
	194	while (!kthread_should_stop()) {
995b9040	195	spin_lock_irqsave(&speakup_info.spinlock, flags);
c6e3fd22 WH	196	if (speakup_info.flushing) {
c6e3fd22 WH	197	speakup_info.flushing = 0;
995b9040	198	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	199	synth->flush(synth);
	200	continue;
	201	}
	202	if (synth_buffer_empty()) {
995b9040	203	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	204	break;
	205	}
	206	set_current_state(TASK_INTERRUPTIBLE);
	207	full_time_val = full_time->u.n.value;
995b9040	208	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	209	if (synth_full()) {
	210	schedule_timeout(msecs_to_jiffies(full_time_val));
	211	continue;
	212	}
	213	set_current_state(TASK_RUNNING);
	214	timeout = SPK_XMITR_TIMEOUT;
	215	while (synth_writable()) {
	216	if (!--timeout)
	217	break;
	218	udelay(1);
	219	}
995b9040	220	spin_lock_irqsave(&speakup_info.spinlock, flags);
c6e3fd22	221	ch = synth_buffer_getc();
995b9040	222	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	223	if (ch == '\n')
	224	ch = PROCSPEECH;
	225	outb_p(ch, speakup_info.port_tts);
75b76b47	226	if (time_after_eq(jiffies, jiff_max) && ch == SPACE) {
c6e3fd22 WH	227	timeout = SPK_XMITR_TIMEOUT;
	228	while (synth_writable()) {
	229	if (!--timeout)
	230	break;
	231	udelay(1);
	232	}
	233	outb_p(PROCSPEECH, speakup_info.port_tts);
995b9040	234	spin_lock_irqsave(&speakup_info.spinlock, flags);
c6e3fd22 WH	235	jiffy_delta_val = jiffy_delta->u.n.value;
c6e3fd22 WH	236	delay_time_val = delay_time->u.n.value;
995b9040	237	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
c6e3fd22 WH	238	schedule_timeout(msecs_to_jiffies(delay_time_val));
	239	jiff_max = jiffies+jiffy_delta_val;
	240	}
	241	}
	242	timeout = SPK_XMITR_TIMEOUT;
	243	while (synth_writable()) {
	244	if (!--timeout)
	245	break;
	246	udelay(1);
	247	}
	248	outb_p(PROCSPEECH, speakup_info.port_tts);
	249	}
	250
	251	static void synth_flush(struct spk_synth *synth)
	252	{
	253	outb_p(SYNTH_CLEAR, speakup_info.port_tts);
	254	}
	255
	256	static int synth_probe(struct spk_synth *synth)
	257	{
	258	unsigned int port_val = 0;
	259	int i = 0;
	260	pr_info("Probing for %s.\n", synth->long_name);
	261	if (port_forced) {
	262	speakup_info.port_tts = port_forced;
	263	pr_info("probe forced to %x by kernel command line\n",
	264	speakup_info.port_tts);
	265	if (synth_request_region(speakup_info.port_tts-1,
	266	SYNTH_IO_EXTENT)) {
	267	pr_warn("sorry, port already reserved\n");
	268	return -EBUSY;
	269	}
	270	port_val = inw(speakup_info.port_tts-1);
	271	synth_port_control = speakup_info.port_tts-1;
	272	} else {
	273	for (i = 0; synth_portlist[i]; i++) {
	274	if (synth_request_region(synth_portlist[i],
	275	SYNTH_IO_EXTENT)) {
bf4a4bac CB	276	pr_warn
	277	("request_region: failed with 0x%x, %d\n",
	278	synth_portlist[i], SYNTH_IO_EXTENT);
c6e3fd22 WH	279	continue;
	280	}
	281	port_val = inw(synth_portlist[i]) & 0xfffc;
	282	if (port_val == 0x53fc) {
	283	/* 'S' and out&input bits */
	284	synth_port_control = synth_portlist[i];
	285	speakup_info.port_tts = synth_port_control+1;
	286	break;
	287	}
	288	}
	289	}
	290	port_val &= 0xfffc;
	291	if (port_val != 0x53fc) {
	292	/* 'S' and out&input bits */
	293	pr_info("%s: not found\n", synth->long_name);
	294	synth_release_region(synth_port_control, SYNTH_IO_EXTENT);
	295	synth_port_control = 0;
	296	return -ENODEV;
	297	}
	298	pr_info("%s: %03x-%03x, driver version %s,\n", synth->long_name,
	299	synth_port_control, synth_port_control+SYNTH_IO_EXTENT-1,
	300	synth->version);
	301	synth->alive = 1;
	302	return 0;
	303	}
	304
	305	static void accent_release(void)
	306	{
	307	if (speakup_info.port_tts)
	308	synth_release_region(speakup_info.port_tts-1, SYNTH_IO_EXTENT);
	309	speakup_info.port_tts = 0;
	310	}
	311
	312	module_param_named(port, port_forced, int, S_IRUGO);
	313	module_param_named(start, synth_acntpc.startup, short, S_IRUGO);
	314
	315	MODULE_PARM_DESC(port, "Set the port for the synthesizer (override probing).");
	316	MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
	317
	318	static int __init acntpc_init(void)
	319	{
	320	return synth_add(&synth_acntpc);
	321	}
	322
	323	static void __exit acntpc_exit(void)
	324	{
	325	synth_remove(&synth_acntpc);
	326	}
	327
	328	module_init(acntpc_init);
	329	module_exit(acntpc_exit);
	330	MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
	331	MODULE_AUTHOR("David Borowski");
	332	MODULE_DESCRIPTION("Speakup support for Accent PC synthesizer");
	333	MODULE_LICENSE("GPL");
	334	MODULE_VERSION(DRV_VERSION);
	335