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Commit 40b7320e authored by Tomas Winkler's avatar Tomas Winkler Committed by Greg Kroah-Hartman
Browse files

mei: bus: export client protocol version 



export me client protocol version to sysfs and uevent

Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 59796edc

Documentation/ABI/testing/sysfs-bus-mei

+7 −0
Original line number Diff line number Diff line
@@ -19,3 +19,10 @@ KernelVersion: 4.2 
Contact:	Tomas Winkler <tomas.winkler@intel.com>

Description:	Stores mei client device uuid

		Format: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx



What:		/sys/bus/mei/devices/.../version

Date:		Aug 2015

KernelVersion:	4.3

Contact:	Tomas Winkler <tomas.winkler@intel.com>

Description:	Stores mei client protocol version

		Format: %d

drivers/misc/mei/bus.c

+18 −0
Original line number Diff line number Diff line
@@ -590,6 +590,19 @@ static ssize_t uuid_show(struct device *dev, struct device_attribute *a, 
}

static DEVICE_ATTR_RO(uuid);



static ssize_t version_show(struct device *dev, struct device_attribute *a,

			     char *buf)

{

	struct mei_cl_device *cldev = to_mei_cl_device(dev);

	u8 version = mei_me_cl_ver(cldev->me_cl);

	size_t len;



	len = snprintf(buf, PAGE_SIZE, "%02X", version);



	return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;

}

static DEVICE_ATTR_RO(version);



static ssize_t modalias_show(struct device *dev, struct device_attribute *a,

			     char *buf)

{
@@ -605,6 +618,7 @@ static DEVICE_ATTR_RO(modalias); 
static struct attribute *mei_cl_dev_attrs[] = {

	&dev_attr_name.attr,

	&dev_attr_uuid.attr,

	&dev_attr_version.attr,

	&dev_attr_modalias.attr,

	NULL,

};
@@ -622,6 +636,10 @@ static int mei_cl_device_uevent(struct device *dev, struct kobj_uevent_env *env) 
{

	struct mei_cl_device *cldev = to_mei_cl_device(dev);

	const uuid_le *uuid = mei_me_cl_uuid(cldev->me_cl);

	u8 version = mei_me_cl_ver(cldev->me_cl);



	if (add_uevent_var(env, "MEI_CL_VERSION=%d", version))

		return -ENOMEM;



	if (add_uevent_var(env, "MEI_CL_UUID=%pUl", uuid))

		return -ENOMEM;

drivers/misc/mei/client.h

+12 −0
Original line number Diff line number Diff line
@@ -68,6 +68,18 @@ static inline const uuid_le *mei_me_cl_uuid(const struct mei_me_client *me_cl) 
	return &me_cl->props.protocol_name;

}



/**

 * mei_me_cl_ver - return me client protocol version

 *

 * @me_cl: me client

 *

 * Return: me client protocol version

 */

static inline u8 mei_me_cl_ver(const struct mei_me_client *me_cl)

{

	return me_cl->props.protocol_version;

}



/*

 * MEI IO Functions

 */