HID: split picolcd's operation_mode sysfs attribute

Original operation_mode sysfs attribute accepts the operation mode
as main value with an option delay as second value to change
the start-up delay on mode change.

As it is preferred to have exactly one value per sysfs attribute,
extract this delay into a separate sysfs attribute called
operation_mode_delay.

Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 13 insertions, 4 deletions

diff --git a/Documentation/ABI/testing/sysfs-driver-hid-picolcd b/Documentation/ABI/testing/sysfs-driver-hid-picolcd
index 14f52d70621b..08579e7e1e89 100644
--- a/Documentation/ABI/testing/sysfs-driver-hid-picolcd
+++ b/Documentation/ABI/testing/sysfs-driver-hid-picolcd
@@ -8,12 +8,21 @@ Description:	Make it possible to switch the PicoLCD device between LCD
                 enclosed in brackets ('[' and ']')
 
                 Writing: causes operation mode switch. Permitted values are
-                the non-active mode names listed when read, optionally followed
-                by a delay value expressed in ms.
+                the non-active mode names listed when read.
 
                 Note: when switching mode the current PicoLCD HID device gets
-                disconnected and reconnects after above delay (default value
-                is 5 seconds though this default should not be relied on).
+                disconnected and reconnects after above delay (see attribute
+                operation_mode_delay for its value).
+
+
+What:           /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/operation_mode_delay
+Date:           April 2010
+Contact:        Bruno Prémont <bonbons@linux-vserver.org>
+Description:    Delay PicoLCD waits before restarting in new mode when
+                operation_mode has changed.
+
+                Reading/Writing: It is expressed in ms and permitted range is
+                0..30000ms.
 
 
 What:           /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/fb_update_rate