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[media] rc: add wakeup_protocols sysfs file
Add a wakeup_protocols sysfs file which controls the new rc_dev::enabled_protocols[RC_FILTER_WAKEUP], which is the mask of protocols that are used for the wakeup filter. A new RC driver callback change_wakeup_protocol() is called to change the wakeup protocol mask. Signed-off-by: James Hogan <james.hogan@imgtec.com> Reviewed-by: Antti Seppälä <a.seppala@gmail.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
James Hogan
Mauro Carvalho Chehab
parent
acff5f2473
commit
ab88c66dea
@ -61,6 +61,25 @@ Description:
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an error.
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This value may be reset to 0 if the current protocol is altered.
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What: /sys/class/rc/rcN/wakeup_protocols
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Date: Feb 2014
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KernelVersion: 3.15
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Contact: Mauro Carvalho Chehab <m.chehab@samsung.com>
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Description:
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Reading this file returns a list of available protocols to use
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for the wakeup filter, something like:
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"rc5 rc6 nec jvc [sony]"
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The enabled wakeup protocol is shown in [] brackets.
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Writing "+proto" will add a protocol to the list of enabled
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wakeup protocols.
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Writing "-proto" will remove a protocol from the list of enabled
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wakeup protocols.
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Writing "proto" will use "proto" for wakeup events.
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Writing "none" will disable wakeup.
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Write fails with EINVAL if an invalid protocol combination or
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unknown protocol name is used, or if wakeup is not supported by
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the hardware.
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What: /sys/class/rc/rcN/wakeup_filter
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Date: Jan 2014
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KernelVersion: 3.15
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@ -74,7 +93,7 @@ Description:
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scancodes which match the filter will wake the system from e.g.
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suspend to RAM or power off.
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Otherwise the write will fail with an error.
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This value may be reset to 0 if the current protocol is altered.
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This value may be reset to 0 if the wakeup protocol is altered.
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What: /sys/class/rc/rcN/wakeup_filter_mask
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Date: Jan 2014
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@ -89,4 +108,4 @@ Description:
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scancodes which match the filter will wake the system from e.g.
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suspend to RAM or power off.
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Otherwise the write will fail with an error.
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This value may be reset to 0 if the current protocol is altered.
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This value may be reset to 0 if the wakeup protocol is altered.
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@ -101,6 +101,22 @@ the filter will be ignored. Otherwise the write will fail with
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an error.</para>
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<para>This value may be reset to 0 if the current protocol is altered.</para>
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</section>
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<section id="sys_class_rc_rcN_wakeup_protocols">
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<title>/sys/class/rc/rcN/wakeup_protocols</title>
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<para>Reading this file returns a list of available protocols to use for the
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wakeup filter, something like:</para>
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<para><constant>rc5 rc6 nec jvc [sony]</constant></para>
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<para>The enabled wakeup protocol is shown in [] brackets.</para>
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<para>Writing "+proto" will add a protocol to the list of enabled wakeup
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protocols.</para>
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<para>Writing "-proto" will remove a protocol from the list of enabled wakeup
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protocols.</para>
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<para>Writing "proto" will use "proto" for wakeup events.</para>
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<para>Writing "none" will disable wakeup.</para>
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<para>Write fails with EINVAL if an invalid protocol combination or unknown
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protocol name is used, or if wakeup is not supported by the hardware.</para>
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</section>
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<section id="sys_class_rc_rcN_wakeup_filter">
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<title>/sys/class/rc/rcN/wakeup_filter</title>
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@ -112,7 +128,7 @@ to trigger a system wake event.</para>
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scancodes which match the filter will wake the system from e.g.
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suspend to RAM or power off.
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Otherwise the write will fail with an error.</para>
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<para>This value may be reset to 0 if the current protocol is altered.</para>
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<para>This value may be reset to 0 if the wakeup protocol is altered.</para>
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</section>
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<section id="sys_class_rc_rcN_wakeup_filter_mask">
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@ -125,7 +141,7 @@ expected value to trigger a system wake event.</para>
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scancodes which match the filter will wake the system from e.g.
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suspend to RAM or power off.
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Otherwise the write will fail with an error.</para>
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<para>This value may be reset to 0 if the current protocol is altered.</para>
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<para>This value may be reset to 0 if the wakeup protocol is altered.</para>
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</section>
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</section>
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@ -803,13 +803,38 @@ static struct {
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};
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/**
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* show_protocols() - shows the current IR protocol(s)
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* struct rc_filter_attribute - Device attribute relating to a filter type.
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* @attr: Device attribute.
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* @type: Filter type.
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* @mask: false for filter value, true for filter mask.
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*/
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struct rc_filter_attribute {
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struct device_attribute attr;
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enum rc_filter_type type;
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bool mask;
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};
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#define to_rc_filter_attr(a) container_of(a, struct rc_filter_attribute, attr)
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#define RC_PROTO_ATTR(_name, _mode, _show, _store, _type) \
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struct rc_filter_attribute dev_attr_##_name = { \
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.attr = __ATTR(_name, _mode, _show, _store), \
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.type = (_type), \
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}
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#define RC_FILTER_ATTR(_name, _mode, _show, _store, _type, _mask) \
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struct rc_filter_attribute dev_attr_##_name = { \
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.attr = __ATTR(_name, _mode, _show, _store), \
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.type = (_type), \
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.mask = (_mask), \
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}
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/**
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* show_protocols() - shows the current/wakeup IR protocol(s)
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* @device: the device descriptor
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* @mattr: the device attribute struct (unused)
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* @buf: a pointer to the output buffer
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*
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* This routine is a callback routine for input read the IR protocol type(s).
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* it is trigged by reading /sys/class/rc/rc?/protocols.
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* it is trigged by reading /sys/class/rc/rc?/[wakeup_]protocols.
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* It returns the protocol names of supported protocols.
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* Enabled protocols are printed in brackets.
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*
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@ -820,6 +845,7 @@ static ssize_t show_protocols(struct device *device,
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struct device_attribute *mattr, char *buf)
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{
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struct rc_dev *dev = to_rc_dev(device);
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struct rc_filter_attribute *fattr = to_rc_filter_attr(mattr);
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u64 allowed, enabled;
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char *tmp = buf;
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int i;
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@ -830,9 +856,10 @@ static ssize_t show_protocols(struct device *device,
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mutex_lock(&dev->lock);
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enabled = dev->enabled_protocols[RC_FILTER_NORMAL];
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if (dev->driver_type == RC_DRIVER_SCANCODE)
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allowed = dev->allowed_protocols[RC_FILTER_NORMAL];
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enabled = dev->enabled_protocols[fattr->type];
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if (dev->driver_type == RC_DRIVER_SCANCODE ||
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fattr->type == RC_FILTER_WAKEUP)
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allowed = dev->allowed_protocols[fattr->type];
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else if (dev->raw)
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allowed = ir_raw_get_allowed_protocols();
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else {
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@ -864,14 +891,14 @@ static ssize_t show_protocols(struct device *device,
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}
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/**
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* store_protocols() - changes the current IR protocol(s)
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* store_protocols() - changes the current/wakeup IR protocol(s)
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* @device: the device descriptor
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* @mattr: the device attribute struct (unused)
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* @buf: a pointer to the input buffer
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* @len: length of the input buffer
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*
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* This routine is for changing the IR protocol type.
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* It is trigged by writing to /sys/class/rc/rc?/protocols.
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* It is trigged by writing to /sys/class/rc/rc?/[wakeup_]protocols.
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* Writing "+proto" will add a protocol to the list of enabled protocols.
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* Writing "-proto" will remove a protocol from the list of enabled protocols.
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* Writing "proto" will enable only "proto".
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@ -888,12 +915,14 @@ static ssize_t store_protocols(struct device *device,
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size_t len)
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{
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struct rc_dev *dev = to_rc_dev(device);
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struct rc_filter_attribute *fattr = to_rc_filter_attr(mattr);
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bool enable, disable;
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const char *tmp;
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u64 type;
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u64 mask;
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int rc, i, count = 0;
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ssize_t ret;
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int (*change_protocol)(struct rc_dev *dev, u64 *rc_type);
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/* Device is being removed */
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if (!dev)
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@ -906,7 +935,7 @@ static ssize_t store_protocols(struct device *device,
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ret = -EINVAL;
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goto out;
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}
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type = dev->enabled_protocols[RC_FILTER_NORMAL];
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type = dev->enabled_protocols[fattr->type];
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while ((tmp = strsep((char **) &data, " \n")) != NULL) {
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if (!*tmp)
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@ -954,8 +983,10 @@ static ssize_t store_protocols(struct device *device,
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goto out;
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}
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if (dev->change_protocol) {
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rc = dev->change_protocol(dev, &type);
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change_protocol = (fattr->type == RC_FILTER_NORMAL)
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? dev->change_protocol : dev->change_wakeup_protocol;
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if (change_protocol) {
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rc = change_protocol(dev, &type);
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if (rc < 0) {
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IR_dprintk(1, "Error setting protocols to 0x%llx\n",
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(long long)type);
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@ -964,7 +995,7 @@ static ssize_t store_protocols(struct device *device,
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}
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}
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dev->enabled_protocols[RC_FILTER_NORMAL] = type;
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dev->enabled_protocols[fattr->type] = type;
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IR_dprintk(1, "Current protocol(s): 0x%llx\n",
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(long long)type);
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@ -975,26 +1006,6 @@ out:
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return ret;
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}
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/**
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* struct rc_filter_attribute - Device attribute relating to a filter type.
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* @attr: Device attribute.
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* @type: Filter type.
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* @mask: false for filter value, true for filter mask.
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*/
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struct rc_filter_attribute {
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struct device_attribute attr;
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enum rc_filter_type type;
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bool mask;
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};
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#define to_rc_filter_attr(a) container_of(a, struct rc_filter_attribute, attr)
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#define RC_FILTER_ATTR(_name, _mode, _show, _store, _type, _mask) \
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struct rc_filter_attribute dev_attr_##_name = { \
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.attr = __ATTR(_name, _mode, _show, _store), \
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.type = (_type), \
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.mask = (_mask), \
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}
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/**
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* show_filter() - shows the current scancode filter value or mask
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* @device: the device descriptor
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@ -1128,8 +1139,10 @@ static int rc_dev_uevent(struct device *device, struct kobj_uevent_env *env)
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/*
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* Static device attribute struct with the sysfs attributes for IR's
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*/
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static DEVICE_ATTR(protocols, S_IRUGO | S_IWUSR,
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show_protocols, store_protocols);
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static RC_PROTO_ATTR(protocols, S_IRUGO | S_IWUSR,
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show_protocols, store_protocols, RC_FILTER_NORMAL);
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static RC_PROTO_ATTR(wakeup_protocols, S_IRUGO | S_IWUSR,
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show_protocols, store_protocols, RC_FILTER_WAKEUP);
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static RC_FILTER_ATTR(filter, S_IRUGO|S_IWUSR,
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show_filter, store_filter, RC_FILTER_NORMAL, false);
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static RC_FILTER_ATTR(filter_mask, S_IRUGO|S_IWUSR,
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@ -1140,7 +1153,8 @@ static RC_FILTER_ATTR(wakeup_filter_mask, S_IRUGO|S_IWUSR,
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show_filter, store_filter, RC_FILTER_WAKEUP, true);
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static struct attribute *rc_dev_attrs[] = {
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&dev_attr_protocols.attr,
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&dev_attr_protocols.attr.attr,
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&dev_attr_wakeup_protocols.attr.attr,
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&dev_attr_filter.attr.attr,
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&dev_attr_filter_mask.attr.attr,
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&dev_attr_wakeup_filter.attr.attr,
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@ -97,6 +97,8 @@ enum rc_filter_type {
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* @tx_resolution: resolution (in ns) of output sampler
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* @scancode_filters: scancode filters (indexed by enum rc_filter_type)
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* @change_protocol: allow changing the protocol used on hardware decoders
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* @change_wakeup_protocol: allow changing the protocol used for wakeup
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* filtering
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* @open: callback to allow drivers to enable polling/irq when IR input device
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* is opened.
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* @close: callback to allow drivers to disable polling/irq when IR input device
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@ -145,6 +147,7 @@ struct rc_dev {
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u32 tx_resolution;
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struct rc_scancode_filter scancode_filters[RC_FILTER_MAX];
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int (*change_protocol)(struct rc_dev *dev, u64 *rc_type);
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int (*change_wakeup_protocol)(struct rc_dev *dev, u64 *rc_type);
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int (*open)(struct rc_dev *dev);
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void (*close)(struct rc_dev *dev);
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int (*s_tx_mask)(struct rc_dev *dev, u32 mask);
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