HID: roccat: enable Koneplus device reset

Device can be reset to factory state by sending a command via info sysfs attr.
Added binary attribute info for this purpose, which obsoletes firmware_version
attribute.

Signed-off-by: Stefan Achatz <erazor_de@users.sourceforge.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

3 files changed, 38 insertions, 8 deletions

diff --git a/Documentation/ABI/obsolete/sysfs-driver-hid-roccat-koneplus b/Documentation/ABI/obsolete/sysfs-driver-hid-roccat-koneplus
index c2a270b45b03..22568b45973e 100644
--- a/Documentation/ABI/obsolete/sysfs-driver-hid-roccat-koneplus
+++ b/Documentation/ABI/obsolete/sysfs-driver-hid-roccat-koneplus
@@ -8,3 +8,14 @@ Description:	The integer value of this attribute ranges from 0-4.
                 When written, this file sets the number of the startup profile
                 and the mouse activates this profile immediately.
                 Please use actual_profile, it does the same thing.
+
+What:           /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/koneplus/roccatkoneplus<minor>/firmware_version
+Date:           October 2010
+Contact:        Stefan Achatz <erazor_de@users.sourceforge.net>
+Description:    When read, this file returns the raw integer version number of the
+                firmware reported by the mouse. Using the integer value eases
+                further usage in other programs. To receive the real version
+                number the decimal point has to be shifted 2 positions to the
+                left. E.g. a returned value of 121 means 1.21
+                This file is readonly.
+                Please read binary attribute info which contains firmware version.
diff --git a/Documentation/ABI/testing/sysfs-driver-hid-roccat-koneplus b/Documentation/ABI/testing/sysfs-driver-hid-roccat-koneplus
index f9e2a61900e5..ed1213defb81 100644
--- a/Documentation/ABI/testing/sysfs-driver-hid-roccat-koneplus
+++ b/Documentation/ABI/testing/sysfs-driver-hid-roccat-koneplus
@@ -9,15 +9,12 @@ Description:	The integer value of this attribute ranges from 0-4.
                 and the mouse activates this profile immediately.
 Users:          http://roccat.sourceforge.net
 
-What:           /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/koneplus/roccatkoneplus<minor>/firmware_version
-Date:           October 2010
+What:           /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/koneplus/roccatkoneplus<minor>/info
+Date:           November 2012
 Contact:        Stefan Achatz <erazor_de@users.sourceforge.net>
-Description:    When read, this file returns the raw integer version number of the
-                firmware reported by the mouse. Using the integer value eases
-                further usage in other programs. To receive the real version
-                number the decimal point has to be shifted 2 positions to the
-                left. E.g. a returned value of 121 means 1.21
-                This file is readonly.
+Description:    When read, this file returns general data like firmware version.
+                When written, the device can be reset.
+                The data is 8 bytes long.
 Users:          http://roccat.sourceforge.net
 
 What:           /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/koneplus/roccatkoneplus<minor>/macro
diff --git a/drivers/hid/hid-roccat-koneplus.c b/drivers/hid/hid-roccat-koneplus.c
index 0df408362ef1..69592f427579 100644
--- a/drivers/hid/hid-roccat-koneplus.c
+++ b/drivers/hid/hid-roccat-koneplus.c
@@ -183,6 +183,22 @@ static ssize_t koneplus_sysfs_write(struct file *fp, struct kobject *kobj,
         return real_size;
 }
 
+static ssize_t koneplus_sysfs_read_info(struct file *fp,
+                struct kobject *kobj, struct bin_attribute *attr, char *buf,
+                loff_t off, size_t count)
+{
+        return koneplus_sysfs_read(fp, kobj, buf, off, count,
+                        sizeof(struct koneplus_info), KONEPLUS_COMMAND_INFO);
+}
+
+static ssize_t koneplus_sysfs_write_info(struct file *fp,
+                struct kobject *kobj, struct bin_attribute *attr, char *buf,
+                loff_t off, size_t count)
+{
+        return koneplus_sysfs_write(fp, kobj, buf, off, count,
+                        sizeof(struct koneplus_info), KONEPLUS_COMMAND_INFO);
+}
+
 static ssize_t koneplus_sysfs_write_talk(struct file *fp,
                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
                 loff_t off, size_t count)
@@ -429,6 +445,12 @@ static struct device_attribute koneplus_attributes[] = {
 
 static struct bin_attribute koneplus_bin_attributes[] = {
         {
+                .attr = { .name = "info", .mode = 0660 },
+                .size = sizeof(struct koneplus_info),
+                .read = koneplus_sysfs_read_info,
+                .write = koneplus_sysfs_write_info
+        },
+        {
                 .attr = { .name = "sensor", .mode = 0660 },
                 .size = sizeof(struct koneplus_sensor),
                 .read = koneplus_sysfs_read_sensor,