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authorTomas Winkler <tomas.winkler@intel.com>2015-09-10 10:18:00 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-09-20 19:30:10 -0700
commit40b7320ee413d0d1cc89c32c2a757fda56d27708 (patch)
tree28532e912f62603e3ee2744a4c6773ea0c53961b /drivers/misc/mei
parent59796edcf21c7c19d58a223001f9ed13746c51c2 (diff)
mei: bus: export client protocol version
export me client protocol version to sysfs and uevent Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei')
-rw-r--r--drivers/misc/mei/bus.c18
-rw-r--r--drivers/misc/mei/client.h12
2 files changed, 30 insertions, 0 deletions
diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index e294f70741a0..d92017fa1630 100644
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -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;
diff --git a/drivers/misc/mei/client.h b/drivers/misc/mei/client.h
index 1c7cad07d731..04e1aa39243f 100644
--- a/drivers/misc/mei/client.h
+++ b/drivers/misc/mei/client.h
@@ -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
*/