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Input: wacom - update the ABI doc according to latest changes

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Now the devices show up under hid no matter the connection (for USB
and Bluetooth, not serial nor i2c).

The USB devices can now be easily found under
/sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>

The Bluetooth devices could also be found under this path since their
inclusion (April 2010), so this patch fixes the non-precise "hidraw*" path
for them.

The ABI has been unified while setting the LEDs and OLEDs. So Bluetooth
devices lost their own LED selector but use the USB sysfs attribute.
For OLEDs, Bluetooth devices handle only 1-bit images instead of 4 for USB.
The documentation has been updated to match this.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Benjamin Tissoires 2014-08-07 23:22:37 -07:00 committed by Dmitry Torokhov
parent 5e2aa2ed08
commit c704b4ef1a
1 changed files with 27 additions and 43 deletions
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70
Documentation/ABI/testing/sysfs-driver-wacom
View file

@ -1,48 +1,27 @@
WWhat: /sys/class/hidraw/hidraw*/device/oled*_img
Date: June 2012
Contact: linux-bluetooth@vger.kernel.org
Description:
The /sys/class/hidraw/hidraw*/device/oled*_img files control
OLED mocro displays on Intuos4 Wireless tablet. Accepted image
has to contain 256 bytes (64x32 px 1 bit colour). The format
is the same as PBM image 62x32px without header (64 bits per
horizontal line, 32 lines). An example of setting OLED No. 0:
dd bs=256 count=1 if=img_file of=[path to oled0_img]/oled0_img
The attribute is read only and no local copy of the image is
stored.
What: /sys/class/hidraw/hidraw*/device/speed
What: /sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>/speed
Date: April 2010
Kernel Version: 2.6.35
Contact: linux-bluetooth@vger.kernel.org
Description:
The /sys/class/hidraw/hidraw*/device/speed file controls
reporting speed of Wacom bluetooth tablet. Reading from
this file returns 1 if tablet reports in high speed mode
The /sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>/speed file
controls reporting speed of Wacom bluetooth tablet. Reading
from this file returns 1 if tablet reports in high speed mode
or 0 otherwise. Writing to this file one of these values
switches reporting speed.
What: /sys/class/leds/0005\:056A\:00BD.0001\:selector\:*/
Date: May 2012
Kernel Version: 3.5
Contact: linux-bluetooth@vger.kernel.org
Description:
LED selector for Intuos4 WL. There are 4 leds, but only one LED
can be lit at a time. Max brightness is 127.
What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/led
Date: August 2011
What: /sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>/wacom_led/led
Date: August 2014
Contact: linux-input@vger.kernel.org
Description:
Attribute group for control of the status LEDs and the OLEDs.
This attribute group is only available for Intuos 4 M, L,
and XL (with LEDs and OLEDs), Intuos 5 (LEDs only), and Cintiq
21UX2 and Cintiq 24HD (LEDs only). Therefore its presence
implicitly signifies the presence of said LEDs and OLEDs on the
tablet device.
and XL (with LEDs and OLEDs), Intuos 4 WL, Intuos 5 (LEDs only),
Intuos Pro (LEDs only) and Cintiq 21UX2 and Cintiq 24HD
(LEDs only). Therefore its presence implicitly signifies the
presence of said LEDs and OLEDs on the tablet device.
What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/status0_luminance
Date: August 2011
What: /sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>/wacom_led/status0_luminance
Date: August 2014
Contact: linux-input@vger.kernel.org
Description:
Writing to this file sets the status LED luminance (1..127)
@ -50,16 +29,16 @@ Description:
button is pressed on the stylus. This luminance level is
normally lower than the level when a button is pressed.
What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/status1_luminance
Date: August 2011
What: /sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>/wacom_led/status1_luminance
Date: August 2014
Contact: linux-input@vger.kernel.org
Description:
Writing to this file sets the status LED luminance (1..127)
when the stylus touches the tablet surface, or any button is
pressed on the stylus.
What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/status_led0_select
Date: August 2011
What: /sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>/wacom_led/status_led0_select
Date: August 2014
Contact: linux-input@vger.kernel.org
Description:
Writing to this file sets which one of the four (for Intuos 4
@ -67,23 +46,23 @@ Description:
24HD) status LEDs is active (0..3). The other three LEDs on the
same side are always inactive.
What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/status_led1_select
Date: September 2011
What: /sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>/wacom_led/status_led1_select
Date: August 2014
Contact: linux-input@vger.kernel.org
Description:
Writing to this file sets which one of the left four (for Cintiq 21UX2
and Cintiq 24HD) status LEDs is active (0..3). The other three LEDs on
the left are always inactive.
What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/buttons_luminance
Date: August 2011
What: /sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>/wacom_led/buttons_luminance
Date: August 2014
Contact: linux-input@vger.kernel.org
Description:
Writing to this file sets the overall luminance level (0..15)
of all eight button OLED displays.
What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/button<n>_rawimg
Date: August 2011
What: /sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>/wacom_led/button<n>_rawimg
Date: August 2014
Contact: linux-input@vger.kernel.org
Description:
When writing a 1024 byte raw image in Wacom Intuos 4
@ -93,3 +72,8 @@ Description:
byte chunk encodes the image data for two consecutive lines on
the display. The low nibble of each byte contains the first
line, and the high nibble contains the second line.
When the Wacom Intuos 4 is connected over Bluetooth, the
image has to contain 256 bytes (64x32 px 1 bit colour).
The format is also scrambled, like in the USB mode, and it can
be summarized by converting 76543210 into GECA6420.
HGFEDCBA HFDB7531