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Date: Tue, 5 Aug 2014 14:18:24 -0700 From: Ping Cheng <pinglinux@...il.com> To: Benjamin Tissoires <benjamin.tissoires@...hat.com> Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>, Jiri Kosina <jkosina@...e.cz>, Jason Gerecke <killertofu@...il.com>, Przemo Firszt <przemo@...szt.eu>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, linux-input <linux-input@...r.kernel.org> Subject: Re: [PATCH] Input - wacom: update the ABI doc according to latest changes Thank you Benjamin for updating the ABI docs. My comments are inline. With those lines updated, this patch is: Reviewed-by: Ping Cheng <pingc@...om.com> Cheers, Ping On Tue, Aug 5, 2014 at 8:34 AM, Benjamin Tissoires <benjamin.tissoires@...hat.com> wrote: > Now the devices show up under hid no matter the connection. So update the > sysfs path to the shortest and common one. > The ABI has also been unified regarding the OLEDs, but Bluetooth handle > only 1-bit images instead of 4. > > Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com> > --- > > Guys, > > by updating this and working on the g-s-d client side for OLEDs, I think now > that we should also keep the oled*_img for Bluetooth and implement this file > for USB too. The user space code gets messy quite fast due to the need to > support old and new kernels, whereas if we handle the scrambling in the kernel, > it should be quite straightforward. > Of course, we have to keep the current button<n>_rawimg for backward > compatibility. > > Any thoughts? > > Cheers, > Benjamin > > Documentation/ABI/testing/sysfs-driver-wacom | 56 ++++++++++------------------ > 1 file changed, 20 insertions(+), 36 deletions(-) > > diff --git a/Documentation/ABI/testing/sysfs-driver-wacom b/Documentation/ABI/testing/sysfs-driver-wacom > index 7fc7810..c75ed4c 100644 > --- a/Documentation/ABI/testing/sysfs-driver-wacom > +++ b/Documentation/ABI/testing/sysfs-driver-wacom > @@ -1,47 +1,26 @@ > -WWhat: /sys/class/hidraw/hidraw*/device/oled*_img > -Date: June 2012 > -Contact: linux-bluetooth@...r.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 Should the Date be updated? > Kernel Version: 2.6.35 This patch is planned for 3.16, right? > Contact: linux-bluetooth@...r.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@...r.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 > +What: /sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>/wacom_led/led > Date: August 2011 Same here and other 6 dates below > Contact: linux-input@...r.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 > +What: /sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>/wacom_led/status0_luminance > Date: August 2011 > Contact: linux-input@...r.kernel.org > Description: > @@ -50,7 +29,7 @@ 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 > +What: /sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>/wacom_led/status1_luminance > Date: August 2011 > Contact: linux-input@...r.kernel.org > Description: > @@ -58,7 +37,7 @@ Description: > 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 > +What: /sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>/wacom_led/status_led0_select > Date: August 2011 > Contact: linux-input@...r.kernel.org > Description: > @@ -67,7 +46,7 @@ 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 > +What: /sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>/wacom_led/status_led1_select > Date: September 2011 > Contact: linux-input@...r.kernel.org > Description: > @@ -75,14 +54,14 @@ Description: > 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 > +What: /sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>/wacom_led/buttons_luminance > Date: August 2011 > Contact: linux-input@...r.kernel.org > Description: > Writing to this file sets the overall luminance level (0..15) We need to specify that this ABI is only for Intuos 4 (USB and Bluetooth). > of all eight button OLED displays.) > > -What: /sys/bus/usb/devices/<busnum>-<devnum>:<cfg>.<intf>/wacom_led/button<n>_rawimg > +What: /sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>/wacom_led/button<n>_rawimg > Date: August 2011 > Contact: linux-input@...r.kernel.org > Description: > @@ -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 > -- > 2.0.4 > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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