/* rc-main.c - Remote Controller core module
*
- * Copyright (C) 2009-2010 by Mauro Carvalho Chehab <mchehab@redhat.com>
+ * Copyright (C) 2009-2010 by Mauro Carvalho Chehab
*
* 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
/* Bitmap to store allocated device numbers from 0 to IRRCV_NUM_DEVICES - 1 */
#define IRRCV_NUM_DEVICES 256
-DECLARE_BITMAP(ir_core_dev_number, IRRCV_NUM_DEVICES);
+static DECLARE_BITMAP(ir_core_dev_number, IRRCV_NUM_DEVICES);
/* Sizes are in bytes, 256 bytes allows for 32 entries on x64 */
#define IR_TAB_MIN_SIZE 256
map = seek_rc_map(name);
#ifdef MODULE
if (!map) {
- int rc = request_module(name);
+ int rc = request_module("%s", name);
if (rc < 0) {
printk(KERN_ERR "Couldn't load IR keymap %s\n", name);
return NULL;
static void ir_do_keydown(struct rc_dev *dev, int scancode,
u32 keycode, u8 toggle)
{
- bool new_event = !dev->keypressed ||
- dev->last_scancode != scancode ||
- dev->last_toggle != toggle;
+ bool new_event = (!dev->keypressed ||
+ dev->last_scancode != scancode ||
+ dev->last_toggle != toggle);
if (new_event && dev->keypressed)
ir_do_keyup(dev, false);
"key 0x%04x, scancode 0x%04x\n",
dev->input_name, keycode, scancode);
input_report_key(dev->input_dev, keycode, 1);
+
+ led_trigger_event(led_feedback, LED_FULL);
}
- led_trigger_event(led_feedback, LED_FULL);
input_sync(dev->input_dev);
}
RC_BIT_SONY20, "sony" },
{ RC_BIT_RC5_SZ, "rc-5-sz" },
{ RC_BIT_SANYO, "sanyo" },
+ { RC_BIT_SHARP, "sharp" },
{ RC_BIT_MCE_KBD, "mce_kbd" },
{ RC_BIT_LIRC, "lirc" },
};
/**
- * show_protocols() - shows the current IR protocol(s)
+ * struct rc_filter_attribute - Device attribute relating to a filter type.
+ * @attr: Device attribute.
+ * @type: Filter type.
+ * @mask: false for filter value, true for filter mask.
+ */
+struct rc_filter_attribute {
+ struct device_attribute attr;
+ enum rc_filter_type type;
+ bool mask;
+};
+#define to_rc_filter_attr(a) container_of(a, struct rc_filter_attribute, attr)
+
+#define RC_PROTO_ATTR(_name, _mode, _show, _store, _type) \
+ struct rc_filter_attribute dev_attr_##_name = { \
+ .attr = __ATTR(_name, _mode, _show, _store), \
+ .type = (_type), \
+ }
+#define RC_FILTER_ATTR(_name, _mode, _show, _store, _type, _mask) \
+ struct rc_filter_attribute dev_attr_##_name = { \
+ .attr = __ATTR(_name, _mode, _show, _store), \
+ .type = (_type), \
+ .mask = (_mask), \
+ }
+
+/**
+ * show_protocols() - shows the current/wakeup IR protocol(s)
* @device: the device descriptor
* @mattr: the device attribute struct (unused)
* @buf: a pointer to the output buffer
*
* This routine is a callback routine for input read the IR protocol type(s).
- * it is trigged by reading /sys/class/rc/rc?/protocols.
+ * it is trigged by reading /sys/class/rc/rc?/[wakeup_]protocols.
* It returns the protocol names of supported protocols.
* Enabled protocols are printed in brackets.
*
struct device_attribute *mattr, char *buf)
{
struct rc_dev *dev = to_rc_dev(device);
+ struct rc_filter_attribute *fattr = to_rc_filter_attr(mattr);
u64 allowed, enabled;
char *tmp = buf;
int i;
mutex_lock(&dev->lock);
- enabled = dev->enabled_protocols;
- if (dev->driver_type == RC_DRIVER_SCANCODE)
- allowed = dev->allowed_protos;
+ enabled = dev->enabled_protocols[fattr->type];
+ if (dev->driver_type == RC_DRIVER_SCANCODE ||
+ fattr->type == RC_FILTER_WAKEUP)
+ allowed = dev->allowed_protocols[fattr->type];
else if (dev->raw)
allowed = ir_raw_get_allowed_protocols();
else {
}
/**
- * store_protocols() - changes the current IR protocol(s)
+ * store_protocols() - changes the current/wakeup IR protocol(s)
* @device: the device descriptor
* @mattr: the device attribute struct (unused)
* @buf: a pointer to the input buffer
* @len: length of the input buffer
*
* This routine is for changing the IR protocol type.
- * It is trigged by writing to /sys/class/rc/rc?/protocols.
+ * It is trigged by writing to /sys/class/rc/rc?/[wakeup_]protocols.
* Writing "+proto" will add a protocol to the list of enabled protocols.
* Writing "-proto" will remove a protocol from the list of enabled protocols.
* Writing "proto" will enable only "proto".
size_t len)
{
struct rc_dev *dev = to_rc_dev(device);
+ struct rc_filter_attribute *fattr = to_rc_filter_attr(mattr);
bool enable, disable;
const char *tmp;
- u64 type;
+ u64 old_type, type;
u64 mask;
int rc, i, count = 0;
ssize_t ret;
+ int (*change_protocol)(struct rc_dev *dev, u64 *rc_type);
+ int (*set_filter)(struct rc_dev *dev, struct rc_scancode_filter *filter);
+ struct rc_scancode_filter local_filter, *filter;
/* Device is being removed */
if (!dev)
ret = -EINVAL;
goto out;
}
- type = dev->enabled_protocols;
+ old_type = dev->enabled_protocols[fattr->type];
+ type = old_type;
while ((tmp = strsep((char **) &data, " \n")) != NULL) {
if (!*tmp)
goto out;
}
- if (dev->change_protocol) {
- rc = dev->change_protocol(dev, &type);
+ change_protocol = (fattr->type == RC_FILTER_NORMAL)
+ ? dev->change_protocol : dev->change_wakeup_protocol;
+ if (change_protocol) {
+ rc = change_protocol(dev, &type);
if (rc < 0) {
IR_dprintk(1, "Error setting protocols to 0x%llx\n",
(long long)type);
}
}
- dev->enabled_protocols = type;
+ dev->enabled_protocols[fattr->type] = type;
IR_dprintk(1, "Current protocol(s): 0x%llx\n",
(long long)type);
+ /*
+ * If the protocol is changed the filter needs updating.
+ * Try setting the same filter with the new protocol (if any).
+ * Fall back to clearing the filter.
+ */
+ filter = &dev->scancode_filters[fattr->type];
+ set_filter = (fattr->type == RC_FILTER_NORMAL)
+ ? dev->s_filter : dev->s_wakeup_filter;
+
+ if (set_filter && old_type != type && filter->mask) {
+ local_filter = *filter;
+ if (!type) {
+ /* no protocol => clear filter */
+ ret = -1;
+ } else {
+ /* hardware filtering => try setting, otherwise clear */
+ ret = set_filter(dev, &local_filter);
+ }
+ if (ret < 0) {
+ /* clear the filter */
+ local_filter.data = 0;
+ local_filter.mask = 0;
+ set_filter(dev, &local_filter);
+ }
+
+ /* commit the new filter */
+ *filter = local_filter;
+ }
+
ret = len;
out:
return ret;
}
+/**
+ * show_filter() - shows the current scancode filter value or mask
+ * @device: the device descriptor
+ * @attr: the device attribute struct
+ * @buf: a pointer to the output buffer
+ *
+ * This routine is a callback routine to read a scancode filter value or mask.
+ * It is trigged by reading /sys/class/rc/rc?/[wakeup_]filter[_mask].
+ * It prints the current scancode filter value or mask of the appropriate filter
+ * type in hexadecimal into @buf and returns the size of the buffer.
+ *
+ * Bits of the filter value corresponding to set bits in the filter mask are
+ * compared against input scancodes and non-matching scancodes are discarded.
+ *
+ * dev->lock is taken to guard against races between device registration,
+ * store_filter and show_filter.
+ */
+static ssize_t show_filter(struct device *device,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct rc_dev *dev = to_rc_dev(device);
+ struct rc_filter_attribute *fattr = to_rc_filter_attr(attr);
+ u32 val;
+
+ /* Device is being removed */
+ if (!dev)
+ return -EINVAL;
+
+ mutex_lock(&dev->lock);
+ if ((fattr->type == RC_FILTER_NORMAL && !dev->s_filter) ||
+ (fattr->type == RC_FILTER_WAKEUP && !dev->s_wakeup_filter))
+ val = 0;
+ else if (fattr->mask)
+ val = dev->scancode_filters[fattr->type].mask;
+ else
+ val = dev->scancode_filters[fattr->type].data;
+ mutex_unlock(&dev->lock);
+
+ return sprintf(buf, "%#x\n", val);
+}
+
+/**
+ * store_filter() - changes the scancode filter value
+ * @device: the device descriptor
+ * @attr: the device attribute struct
+ * @buf: a pointer to the input buffer
+ * @len: length of the input buffer
+ *
+ * This routine is for changing a scancode filter value or mask.
+ * It is trigged by writing to /sys/class/rc/rc?/[wakeup_]filter[_mask].
+ * Returns -EINVAL if an invalid filter value for the current protocol was
+ * specified or if scancode filtering is not supported by the driver, otherwise
+ * returns @len.
+ *
+ * Bits of the filter value corresponding to set bits in the filter mask are
+ * compared against input scancodes and non-matching scancodes are discarded.
+ *
+ * dev->lock is taken to guard against races between device registration,
+ * store_filter and show_filter.
+ */
+static ssize_t store_filter(struct device *device,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ struct rc_dev *dev = to_rc_dev(device);
+ struct rc_filter_attribute *fattr = to_rc_filter_attr(attr);
+ struct rc_scancode_filter local_filter, *filter;
+ int ret;
+ unsigned long val;
+ int (*set_filter)(struct rc_dev *dev, struct rc_scancode_filter *filter);
+
+ /* Device is being removed */
+ if (!dev)
+ return -EINVAL;
+
+ ret = kstrtoul(buf, 0, &val);
+ if (ret < 0)
+ return ret;
+
+ /* Can the scancode filter be set? */
+ set_filter = (fattr->type == RC_FILTER_NORMAL) ? dev->s_filter :
+ dev->s_wakeup_filter;
+ if (!set_filter)
+ return -EINVAL;
+
+ mutex_lock(&dev->lock);
+
+ /* Tell the driver about the new filter */
+ filter = &dev->scancode_filters[fattr->type];
+ local_filter = *filter;
+ if (fattr->mask)
+ local_filter.mask = val;
+ else
+ local_filter.data = val;
+
+ if (!dev->enabled_protocols[fattr->type] && local_filter.mask) {
+ /* refuse to set a filter unless a protocol is enabled */
+ ret = -EINVAL;
+ goto unlock;
+ }
+
+ ret = set_filter(dev, &local_filter);
+ if (ret < 0)
+ goto unlock;
+
+ /* Success, commit the new filter */
+ *filter = local_filter;
+
+unlock:
+ mutex_unlock(&dev->lock);
+ return (ret < 0) ? ret : count;
+}
+
static void rc_dev_release(struct device *device)
{
}
/*
* Static device attribute struct with the sysfs attributes for IR's
*/
-static DEVICE_ATTR(protocols, S_IRUGO | S_IWUSR,
- show_protocols, store_protocols);
+static RC_PROTO_ATTR(protocols, S_IRUGO | S_IWUSR,
+ show_protocols, store_protocols, RC_FILTER_NORMAL);
+static RC_PROTO_ATTR(wakeup_protocols, S_IRUGO | S_IWUSR,
+ show_protocols, store_protocols, RC_FILTER_WAKEUP);
+static RC_FILTER_ATTR(filter, S_IRUGO|S_IWUSR,
+ show_filter, store_filter, RC_FILTER_NORMAL, false);
+static RC_FILTER_ATTR(filter_mask, S_IRUGO|S_IWUSR,
+ show_filter, store_filter, RC_FILTER_NORMAL, true);
+static RC_FILTER_ATTR(wakeup_filter, S_IRUGO|S_IWUSR,
+ show_filter, store_filter, RC_FILTER_WAKEUP, false);
+static RC_FILTER_ATTR(wakeup_filter_mask, S_IRUGO|S_IWUSR,
+ show_filter, store_filter, RC_FILTER_WAKEUP, true);
+
+static struct attribute *rc_dev_protocol_attrs[] = {
+ &dev_attr_protocols.attr.attr,
+ NULL,
+};
+
+static struct attribute_group rc_dev_protocol_attr_grp = {
+ .attrs = rc_dev_protocol_attrs,
+};
-static struct attribute *rc_dev_attrs[] = {
- &dev_attr_protocols.attr,
+static struct attribute *rc_dev_wakeup_protocol_attrs[] = {
+ &dev_attr_wakeup_protocols.attr.attr,
NULL,
};
-static struct attribute_group rc_dev_attr_grp = {
- .attrs = rc_dev_attrs,
+static struct attribute_group rc_dev_wakeup_protocol_attr_grp = {
+ .attrs = rc_dev_wakeup_protocol_attrs,
};
-static const struct attribute_group *rc_dev_attr_groups[] = {
- &rc_dev_attr_grp,
- NULL
+static struct attribute *rc_dev_filter_attrs[] = {
+ &dev_attr_filter.attr.attr,
+ &dev_attr_filter_mask.attr.attr,
+ NULL,
+};
+
+static struct attribute_group rc_dev_filter_attr_grp = {
+ .attrs = rc_dev_filter_attrs,
+};
+
+static struct attribute *rc_dev_wakeup_filter_attrs[] = {
+ &dev_attr_wakeup_filter.attr.attr,
+ &dev_attr_wakeup_filter_mask.attr.attr,
+ NULL,
+};
+
+static struct attribute_group rc_dev_wakeup_filter_attr_grp = {
+ .attrs = rc_dev_wakeup_filter_attrs,
};
static struct device_type rc_dev_type = {
- .groups = rc_dev_attr_groups,
.release = rc_dev_release,
.uevent = rc_dev_uevent,
};
static bool raw_init = false; /* raw decoders loaded? */
struct rc_map *rc_map;
const char *path;
- int rc, devno;
+ int rc, devno, attr = 0;
if (!dev || !dev->map_name)
return -EINVAL;
if (dev->close)
dev->input_dev->close = ir_close;
- /*
- * Take the lock here, as the device sysfs node will appear
- * when device_add() is called, which may trigger an ir-keytable udev
- * rule, which will in turn call show_protocols and access
- * dev->enabled_protocols before it has been initialized.
- */
- mutex_lock(&dev->lock);
-
do {
devno = find_first_zero_bit(ir_core_dev_number,
IRRCV_NUM_DEVICES);
return -ENOMEM;
} while (test_and_set_bit(devno, ir_core_dev_number));
+ dev->dev.groups = dev->sysfs_groups;
+ dev->sysfs_groups[attr++] = &rc_dev_protocol_attr_grp;
+ if (dev->s_filter)
+ dev->sysfs_groups[attr++] = &rc_dev_filter_attr_grp;
+ if (dev->s_wakeup_filter)
+ dev->sysfs_groups[attr++] = &rc_dev_wakeup_filter_attr_grp;
+ if (dev->change_wakeup_protocol)
+ dev->sysfs_groups[attr++] = &rc_dev_wakeup_protocol_attr_grp;
+ dev->sysfs_groups[attr++] = NULL;
+
+ /*
+ * Take the lock here, as the device sysfs node will appear
+ * when device_add() is called, which may trigger an ir-keytable udev
+ * rule, which will in turn call show_protocols and access
+ * dev->enabled_protocols before it has been initialized.
+ */
+ mutex_lock(&dev->lock);
+
dev->devno = devno;
dev_set_name(&dev->dev, "rc%ld", dev->devno);
dev_set_drvdata(&dev->dev, dev);
rc = dev->change_protocol(dev, &rc_type);
if (rc < 0)
goto out_raw;
- dev->enabled_protocols = rc_type;
+ dev->enabled_protocols[RC_FILTER_NORMAL] = rc_type;
}
mutex_unlock(&dev->lock);
EXPORT_SYMBOL_GPL(rc_core_debug);
module_param_named(debug, rc_core_debug, int, 0644);
-MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>");
+MODULE_AUTHOR("Mauro Carvalho Chehab");
MODULE_LICENSE("GPL");
projects / linux.git / blobdiff