Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 464 insertions, 0 deletions

diff --git a/drivers/accessibility/speakup/speakup_soft.c b/drivers/accessibility/speakup/speakup_soft.c
new file mode 100644
index 000000000..28c8f6037
--- /dev/null
+++ b/drivers/accessibility/speakup/speakup_soft.c
@@ -0,0 +1,464 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* speakup_soft.c - speakup driver to register and make available
+ * a user space device for software synthesizers.  written by: Kirk
+ * Reiser <kirk@braille.uwo.ca>
+ *
+ * Copyright (C) 2003  Kirk Reiser.
+ *
+ * this code is specifically written as a driver for the speakup screenreview
+ * package and is not a general device driver.
+ */
+
+#include <linux/unistd.h>
+#include <linux/miscdevice.h>	/* for misc_register, and MISC_DYNAMIC_MINOR */
+#include <linux/poll.h>		/* for poll_wait() */
+
+/* schedule(), signal_pending(), TASK_INTERRUPTIBLE */
+#include <linux/sched/signal.h>
+
+#include "spk_priv.h"
+#include "speakup.h"
+
+#define DRV_VERSION "2.6"
+#define PROCSPEECH 0x0d
+#define CLEAR_SYNTH 0x18
+
+static int softsynth_probe(struct spk_synth *synth);
+static void softsynth_release(struct spk_synth *synth);
+static int softsynth_is_alive(struct spk_synth *synth);
+static int softsynth_adjust(struct spk_synth *synth, struct st_var_header *var);
+static unsigned char get_index(struct spk_synth *synth);
+
+static struct miscdevice synth_device, synthu_device;
+static int init_pos;
+static int misc_registered;
+
+static struct var_t vars[] = {
+	/* DIRECT is put first so that module_param_named can access it easily */
+	{ DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
+
+	{ CAPS_START, .u.s = {"\x01+3p" } },
+	{ CAPS_STOP, .u.s = {"\x01-3p" } },
+	{ PAUSE, .u.n = {"\x01P" } },
+	{ RATE, .u.n = {"\x01%ds", 2, 0, 9, 0, 0, NULL } },
+	{ PITCH, .u.n = {"\x01%dp", 5, 0, 9, 0, 0, NULL } },
+	{ INFLECTION, .u.n = {"\x01%dr", 5, 0, 9, 0, 0, NULL } },
+	{ VOL, .u.n = {"\x01%dv", 5, 0, 9, 0, 0, NULL } },
+	{ TONE, .u.n = {"\x01%dx", 1, 0, 2, 0, 0, NULL } },
+	{ PUNCT, .u.n = {"\x01%db", 0, 0, 3, 0, 0, NULL } },
+	{ VOICE, .u.n = {"\x01%do", 0, 0, 7, 0, 0, NULL } },
+	{ FREQUENCY, .u.n = {"\x01%df", 5, 0, 9, 0, 0, NULL } },
+	V_LAST_VAR
+};
+
+/* These attributes will appear in /sys/accessibility/speakup/soft. */
+
+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 freq_attribute =
+	__ATTR(freq, 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 inflection_attribute =
+	__ATTR(inflection, 0644, spk_var_show, spk_var_store);
+static struct kobj_attribute punct_attribute =
+	__ATTR(punct, 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 voice_attribute =
+	__ATTR(voice, 0644, spk_var_show, spk_var_store);
+static struct kobj_attribute vol_attribute =
+	__ATTR(vol, 0644, spk_var_show, spk_var_store);
+
+/*
+ * We should uncomment the following definition, when we agree on a
+ * method of passing a language designation to the software synthesizer.
+ * static struct kobj_attribute lang_attribute =
+ *	__ATTR(lang, 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,
+	&freq_attribute.attr,
+/*	&lang_attribute.attr, */
+	&pitch_attribute.attr,
+	&inflection_attribute.attr,
+	&punct_attribute.attr,
+	&rate_attribute.attr,
+	&tone_attribute.attr,
+	&voice_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_soft = {
+	.name = "soft",
+	.version = DRV_VERSION,
+	.long_name = "software synth",
+	.init = "\01@\x01\x31y\n",
+	.procspeech = PROCSPEECH,
+	.delay = 0,
+	.trigger = 0,
+	.jiffies = 0,
+	.full = 0,
+	.startup = SYNTH_START,
+	.checkval = SYNTH_CHECK,
+	.vars = vars,
+	.io_ops = NULL,
+	.probe = softsynth_probe,
+	.release = softsynth_release,
+	.synth_immediate = NULL,
+	.catch_up = NULL,
+	.flush = NULL,
+	.is_alive = softsynth_is_alive,
+	.synth_adjust = softsynth_adjust,
+	.read_buff_add = NULL,
+	.get_index = get_index,
+	.indexing = {
+		.command = "\x01%di",
+		.lowindex = 1,
+		.highindex = 5,
+		.currindex = 1,
+	},
+	.attributes = {
+		.attrs = synth_attrs,
+		.name = "soft",
+	},
+};
+
+static char *get_initstring(void)
+{
+	static char buf[40];
+	char *cp;
+	struct var_t *var;
+	size_t len;
+	size_t n;
+
+	memset(buf, 0, sizeof(buf));
+	cp = buf;
+	len = sizeof(buf);
+
+	var = synth_soft.vars;
+	while (var->var_id != MAXVARS) {
+		if (var->var_id != CAPS_START && var->var_id != CAPS_STOP &&
+		    var->var_id != PAUSE && var->var_id != DIRECT) {
+			n = scnprintf(cp, len, var->u.n.synth_fmt,
+				      var->u.n.value);
+			cp = cp + n;
+			len = len - n;
+		}
+		var++;
+	}
+	cp = cp + scnprintf(cp, len, "\n");
+	return buf;
+}
+
+static int softsynth_open(struct inode *inode, struct file *fp)
+{
+	unsigned long flags;
+	/*if ((fp->f_flags & O_ACCMODE) != O_RDONLY) */
+	/*	return -EPERM; */
+	spin_lock_irqsave(&speakup_info.spinlock, flags);
+	if (synth_soft.alive) {
+		spin_unlock_irqrestore(&speakup_info.spinlock, flags);
+		return -EBUSY;
+	}
+	synth_soft.alive = 1;
+	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
+	return 0;
+}
+
+static int softsynth_close(struct inode *inode, struct file *fp)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&speakup_info.spinlock, flags);
+	synth_soft.alive = 0;
+	init_pos = 0;
+	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
+	/* Make sure we let applications go before leaving */
+	speakup_start_ttys();
+	return 0;
+}
+
+static ssize_t softsynthx_read(struct file *fp, char __user *buf, size_t count,
+			       loff_t *pos, int unicode)
+{
+	int chars_sent = 0;
+	char __user *cp;
+	char *init;
+	size_t bytes_per_ch = unicode ? 3 : 1;
+	u16 ch;
+	int empty;
+	unsigned long flags;
+	DEFINE_WAIT(wait);
+
+	if (count < bytes_per_ch)
+		return -EINVAL;
+
+	spin_lock_irqsave(&speakup_info.spinlock, flags);
+	synth_soft.alive = 1;
+	while (1) {
+		prepare_to_wait(&speakup_event, &wait, TASK_INTERRUPTIBLE);
+		if (synth_current() == &synth_soft) {
+			if (!unicode)
+				synth_buffer_skip_nonlatin1();
+			if (!synth_buffer_empty() || speakup_info.flushing)
+				break;
+		}
+		spin_unlock_irqrestore(&speakup_info.spinlock, flags);
+		if (fp->f_flags & O_NONBLOCK) {
+			finish_wait(&speakup_event, &wait);
+			return -EAGAIN;
+		}
+		if (signal_pending(current)) {
+			finish_wait(&speakup_event, &wait);
+			return -ERESTARTSYS;
+		}
+		schedule();
+		spin_lock_irqsave(&speakup_info.spinlock, flags);
+	}
+	finish_wait(&speakup_event, &wait);
+
+	cp = buf;
+	init = get_initstring();
+
+	/* Keep 3 bytes available for a 16bit UTF-8-encoded character */
+	while (chars_sent <= count - bytes_per_ch) {
+		if (synth_current() != &synth_soft)
+			break;
+		if (speakup_info.flushing) {
+			speakup_info.flushing = 0;
+			ch = '\x18';
+		} else if (init[init_pos]) {
+			ch = init[init_pos++];
+		} else {
+			if (!unicode)
+				synth_buffer_skip_nonlatin1();
+			if (synth_buffer_empty())
+				break;
+			ch = synth_buffer_getc();
+		}
+		spin_unlock_irqrestore(&speakup_info.spinlock, flags);
+
+		if ((!unicode && ch < 0x100) || (unicode && ch < 0x80)) {
+			u_char c = ch;
+
+			if (copy_to_user(cp, &c, 1))
+				return -EFAULT;
+
+			chars_sent++;
+			cp++;
+		} else if (unicode && ch < 0x800) {
+			u_char s[2] = {
+				0xc0 | (ch >> 6),
+				0x80 | (ch & 0x3f)
+			};
+
+			if (copy_to_user(cp, s, sizeof(s)))
+				return -EFAULT;
+
+			chars_sent += sizeof(s);
+			cp += sizeof(s);
+		} else if (unicode) {
+			u_char s[3] = {
+				0xe0 | (ch >> 12),
+				0x80 | ((ch >> 6) & 0x3f),
+				0x80 | (ch & 0x3f)
+			};
+
+			if (copy_to_user(cp, s, sizeof(s)))
+				return -EFAULT;
+
+			chars_sent += sizeof(s);
+			cp += sizeof(s);
+		}
+
+		spin_lock_irqsave(&speakup_info.spinlock, flags);
+	}
+	*pos += chars_sent;
+	empty = synth_buffer_empty();
+	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
+	if (empty) {
+		speakup_start_ttys();
+		*pos = 0;
+	}
+	return chars_sent;
+}
+
+static ssize_t softsynth_read(struct file *fp, char __user *buf, size_t count,
+			      loff_t *pos)
+{
+	return softsynthx_read(fp, buf, count, pos, 0);
+}
+
+static ssize_t softsynthu_read(struct file *fp, char __user *buf, size_t count,
+			       loff_t *pos)
+{
+	return softsynthx_read(fp, buf, count, pos, 1);
+}
+
+static int last_index;
+
+static ssize_t softsynth_write(struct file *fp, const char __user *buf,
+			       size_t count, loff_t *pos)
+{
+	unsigned long supplied_index = 0;
+	int converted;
+
+	converted = kstrtoul_from_user(buf, count, 0, &supplied_index);
+
+	if (converted < 0)
+		return converted;
+
+	last_index = supplied_index;
+	return count;
+}
+
+static __poll_t softsynth_poll(struct file *fp, struct poll_table_struct *wait)
+{
+	unsigned long flags;
+	__poll_t ret = 0;
+
+	poll_wait(fp, &speakup_event, wait);
+
+	spin_lock_irqsave(&speakup_info.spinlock, flags);
+	if (synth_current() == &synth_soft &&
+	    (!synth_buffer_empty() || speakup_info.flushing))
+		ret = EPOLLIN | EPOLLRDNORM;
+	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
+	return ret;
+}
+
+static unsigned char get_index(struct spk_synth *synth)
+{
+	int rv;
+
+	rv = last_index;
+	last_index = 0;
+	return rv;
+}
+
+static const struct file_operations softsynth_fops = {
+	.owner = THIS_MODULE,
+	.poll = softsynth_poll,
+	.read = softsynth_read,
+	.write = softsynth_write,
+	.open = softsynth_open,
+	.release = softsynth_close,
+};
+
+static const struct file_operations softsynthu_fops = {
+	.owner = THIS_MODULE,
+	.poll = softsynth_poll,
+	.read = softsynthu_read,
+	.write = softsynth_write,
+	.open = softsynth_open,
+	.release = softsynth_close,
+};
+
+static int softsynth_probe(struct spk_synth *synth)
+{
+	if (misc_registered != 0)
+		return 0;
+	memset(&synth_device, 0, sizeof(synth_device));
+	synth_device.minor = MISC_DYNAMIC_MINOR;
+	synth_device.name = "softsynth";
+	synth_device.fops = &softsynth_fops;
+	if (misc_register(&synth_device)) {
+		pr_warn("Couldn't initialize miscdevice /dev/softsynth.\n");
+		return -ENODEV;
+	}
+
+	memset(&synthu_device, 0, sizeof(synthu_device));
+	synthu_device.minor = MISC_DYNAMIC_MINOR;
+	synthu_device.name = "softsynthu";
+	synthu_device.fops = &softsynthu_fops;
+	if (misc_register(&synthu_device)) {
+		misc_deregister(&synth_device);
+		pr_warn("Couldn't initialize miscdevice /dev/softsynthu.\n");
+		return -ENODEV;
+	}
+
+	misc_registered = 1;
+	pr_info("initialized device: /dev/softsynth, node (MAJOR 10, MINOR %d)\n",
+		synth_device.minor);
+	pr_info("initialized device: /dev/softsynthu, node (MAJOR 10, MINOR %d)\n",
+		synthu_device.minor);
+	return 0;
+}
+
+static void softsynth_release(struct spk_synth *synth)
+{
+	misc_deregister(&synth_device);
+	misc_deregister(&synthu_device);
+	misc_registered = 0;
+	pr_info("unregistered /dev/softsynth\n");
+	pr_info("unregistered /dev/softsynthu\n");
+}
+
+static int softsynth_is_alive(struct spk_synth *synth)
+{
+	if (synth_soft.alive)
+		return 1;
+	return 0;
+}
+
+static int softsynth_adjust(struct spk_synth *synth, struct st_var_header *var)
+{
+	struct st_var_header *punc_level_var;
+	struct var_t *var_data;
+
+	if (var->var_id != PUNC_LEVEL)
+		return 0;
+
+	/* We want to set the the speech synthesis punctuation level
+	 * accordingly, so it properly tunes speaking A_PUNC characters */
+	var_data = var->data;
+	if (!var_data)
+		return 0;
+	punc_level_var = spk_get_var_header(PUNCT);
+	if (!punc_level_var)
+		return 0;
+	spk_set_num_var(var_data->u.n.value, punc_level_var, E_SET);
+
+	return 1;
+}
+
+module_param_named(start, synth_soft.startup, short, 0444);
+module_param_named(direct, vars[0].u.n.default_val, int, 0444);
+
+MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
+MODULE_PARM_DESC(direct, "Set the direct variable on load.");
+
+module_spk_synth(synth_soft);
+
+MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
+MODULE_DESCRIPTION("Speakup userspace software synthesizer support");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);