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greybus: bundle: add bundle_id attribute

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Add a bundle_id attribute for the interface-unique id of a bundle that
user space can use for matching.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Johan Hovold 2015-11-25 15:59:01 +01:00 committed by Greg Kroah-Hartman
parent 2b14daba1d
commit a97015c9e9
2 changed files with 17 additions and 0 deletions
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7
drivers/staging/greybus/Documentation/sysfs-bus-greybus
View File

@ -104,6 +104,13 @@ Contact: Greg Kroah-Hartman <greg@kroah.com>
Description:
The greybus class of the bundle B.
What: /sys/bus/greybus/device/N-I.B/bundle_id
Date: October 2015
KernelVersion: 4.XX
Contact: Greg Kroah-Hartman <greg@kroah.com>
Description:
The interface-unique id of the bundle B.
What: /sys/bus/greybus/device/N-I.B/state
Date: October 2015
KernelVersion: 4.XX

10
drivers/staging/greybus/bundle.c
View File

@ -18,6 +18,15 @@ static ssize_t bundle_class_show(struct device *dev,
}
static DEVICE_ATTR_RO(bundle_class);
static ssize_t bundle_id_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct gb_bundle *bundle = to_gb_bundle(dev);
return sprintf(buf, "%u\n", bundle->id);
}
static DEVICE_ATTR_RO(bundle_id);
static ssize_t state_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
@ -49,6 +58,7 @@ static DEVICE_ATTR_RW(state);
static struct attribute *bundle_attrs[] = {
&dev_attr_bundle_class.attr,
&dev_attr_bundle_id.attr,
&dev_attr_state.attr,
NULL,
};