On Mon, 2015-07-20 at 23:03 +0200, Yann Cantin wrote:
> Signed-off-by: Yann Cantin <yann.can...@laposte.net>
> ---
>  Documentation/ABI/testing/sysfs-driver-ebeam |  53 ++
>  drivers/input/misc/Kconfig                   |  22 +
>  drivers/input/misc/Makefile                  |   1 +
>  drivers/input/misc/ebeam.c                   | 777 
> +++++++++++++++++++++++++++
>  4 files changed, 853 insertions(+)
>  create mode 100644 Documentation/ABI/testing/sysfs-driver-ebeam
>  create mode 100644 drivers/input/misc/ebeam.c
> 
> diff --git a/Documentation/ABI/testing/sysfs-driver-ebeam 
> b/Documentation/ABI/testing/sysfs-driver-ebeam
> new file mode 100644
> index 0000000..6873db5
> --- /dev/null
> +++ b/Documentation/ABI/testing/sysfs-driver-ebeam
> @@ -0,0 +1,53 @@
> +What:                /sys/class/input/inputXX/device/min_x
> +             /sys/class/input/inputXX/device/min_y
> +             /sys/class/input/inputXX/device/max_x
> +             /sys/class/input/inputXX/device/max_y
> +Date:                Jul 2015
> +Kernel Version:      4.1
> +Contact:     yann.can...@laposte.net
> +             linux-...@vger.kernel.org
> +Description:
> +             Reading from these files return the actually used range values 
> of
> +             the reported coordinates.
> +             Writing to these files preset these range values.
> +             See below for the calibration procedure.
> +
> +What:                /sys/class/input/inputXX/device/h[1..9]
> +Date:                Jul 2015
> +Kernel Version:      4.1
> +Contact:     yann.can...@laposte.net
> +             linux-...@vger.kernel.org
> +Description:
> +             Reading from these files return the 3x3 transformation matrix 
> elements
> +             actually used, in row-major.
> +             Writing to these files preset these elements values.
> +             See below for the calibration procedure.
> +
> +What:                /sys/class/input/inputXX/device/calibrated
> +Date:                Jul 2015
> +Kernel Version:      4.1
> +Contact:     yann.can...@laposte.net
> +             linux-...@vger.kernel.org
> +Description:
> +             Reading from this file :
> +             - Return 0 if the driver is in "un-calibrated" mode : it 
> actually send
> +               raw coordinates in the device's internal coordinates system.
> +             - Return 1 if the driver is in "calibrated" mode : it send 
> computed coordinates
> +               that (hopefully) matches the screen's coordinates system.
> +             Writing 1 to this file enable the "calibrated" mode, 0 reset 
> the driver in
> +             "un-calibrated" mode.
> +
> +Calibration procedure :
> +
> +When loaded, the driver is in "un-calibrated" mode : it send device's raw 
> coordinates
> +in the [0..65535]x[0..65535] range, the transformation matrix is the 
> identity.
> +
> +A calibration program have to compute a homography transformation matrix 
> that convert
> +the device's raw coordinates to the matching screen's ones.
> +It then write to the appropriate sysfs files the computed values, 
> pre-setting the
> +driver's parameters : xy range, and the matrix's elements.
> +When all values are passed, it write 1 to the calibrated sysfs file to 
> enable the "calibrated" mode.
> +
> +Warning : The parameters aren't used until 1 is writen to the calibrated 
> sysfs file.
> +
> +Writing 0 to the calibrated sysfs file reset the driver in "un-calibrated" 
> mode.
> diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
> index d4f0a81..22c46a4 100644
> --- a/drivers/input/misc/Kconfig
> +++ b/drivers/input/misc/Kconfig
> @@ -103,6 +103,28 @@ config INPUT_E3X0_BUTTON
>         To compile this driver as a module, choose M here: the
>         module will be called e3x0_button.
>  
> +config INPUT_EBEAM_USB
> +     tristate "USB eBeam driver"
> +     depends on USB_ARCH_HAS_HCD
> +     select USB
> +     help
> +       Say Y here if you have a USB eBeam pointing device and want to
> +       use it without any proprietary user space tools.
> +
> +       Have a look at <http://ebeam.tuxfamily.org/> for
> +       a usage description and the required user-space tools.
> +
> +       Supported devices :
> +         - Luidia eBeam Classic Projection and eBeam Edge Projection
> +         - Nec NP01Wi1 & NP01Wi2 interactive solution
> +
> +       Supposed working devices, need test, may lack functionality :
> +         - Luidia eBeam Edge Whiteboard and eBeam Engage
> +         - Hitachi Starboard FX-63, FX-77, FX-82, FX-77GII
> +
> +       To compile this driver as a module, choose M here: the
> +       module will be called ebeam.
> +
>  config INPUT_PCSPKR
>       tristate "PC Speaker support"
>       depends on PCSPKR_PLATFORM
> diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
> index 53df07d..125f8a9 100644
> --- a/drivers/input/misc/Makefile
> +++ b/drivers/input/misc/Makefile
> @@ -28,6 +28,7 @@ obj-$(CONFIG_INPUT_DA9055_ONKEY)    += da9055_onkey.o
>  obj-$(CONFIG_INPUT_DA9063_ONKEY)     += da9063_onkey.o
>  obj-$(CONFIG_INPUT_DM355EVM)         += dm355evm_keys.o
>  obj-$(CONFIG_INPUT_E3X0_BUTTON)              += e3x0-button.o
> +obj-$(CONFIG_INPUT_EBEAM_USB)                += ebeam.o
>  obj-$(CONFIG_INPUT_DRV260X_HAPTICS)  += drv260x.o
>  obj-$(CONFIG_INPUT_DRV2665_HAPTICS)  += drv2665.o
>  obj-$(CONFIG_INPUT_DRV2667_HAPTICS)  += drv2667.o
> diff --git a/drivers/input/misc/ebeam.c b/drivers/input/misc/ebeam.c
> new file mode 100644
> index 0000000..79cac51
> --- /dev/null
> +++ b/drivers/input/misc/ebeam.c
> @@ -0,0 +1,777 @@
> +/******************************************************************************
> + *
> + * eBeam driver
> + *
> + * Copyright (C) 2012-2015 Yann Cantin (yann.can...@laposte.net)
> + *
> + *   This program is free software; you can redistribute it and/or
> + *   modify it under the terms of the GNU General Public License as
> + *   published by the Free Software Foundation; either version 2 of the
> + *   License, or (at your option) any later version.
> + *
> + *  based on
> + *
> + *   usbtouchscreen.c by Daniel Ritz <daniel.r...@gmx.ch>
> + *   aiptek.c (sysfs/settings) by Chris Atenasio <ch...@crud.net>
> + *                                Bryan W. Headley <bwhead...@earthlink.net>
> + *
> + 
> *****************************************************************************/
> +
> +#include <linux/kernel.h>
> +#include <linux/slab.h>
> +#include <linux/math64.h>
> +#include <linux/input.h>
> +#include <linux/module.h>
> +#include <linux/init.h>
> +#include <linux/usb.h>
> +#include <linux/usb/input.h>
> +#include <asm/unaligned.h>
> +
> +#define DRIVER_AUTHOR        "Yann Cantin <yann.can...@laposte.net>"
> +#define DRIVER_DESC  "USB eBeam Driver"
> +
> +/* Common values for eBeam devices */
> +#define REPT_SIZE    8       /* packet size            */
> +#define MIN_RAW_X    0       /* raw coordinates ranges */
> +#define MAX_RAW_X    0xFFFF
> +#define MIN_RAW_Y    0
> +#define MAX_RAW_Y    0xFFFF
> +
> +/* Electronics For Imaging, Inc */
> +#define USB_VENDOR_ID_EFI    0x2650

You are defining these IDs twice. That is not good.

        Regards
                Oliver


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