[PATCH libinput] evdev: accept accelerometers if they are tagged as other devices too
Peter Hutterer
peter.hutterer at who-t.net
Sat Aug 26 09:18:19 UTC 2017
On 26/08/2017 06:52 , Roderick Colenbrander wrote:
> Hi Peter,
>
> I'm not too familiar with this code, but does this prevent usage of
> accelerometer axes in libevdev for pure accelerometer devices as in
> devices setting INPUT_PROP_ACCELEROMETER and not providing buttons or
> other axes? As you are aware we are quite interested in in dualshock 3
> / 4 gamepads and we have a pure accelerometer composite device. It
> would be nice to be able to get the data out through libevdev as well.
> If my understanding is correct this prevents this? As I said I'm not
> too familiar with the code base.
Note that this patch is just for libinput, not libevdev. libevdev still
doesn't care what a device is and merely forwards everything. libinput
doesn't do joysticks though and uses libevdev to filter the events. If
you have your own libevdev context (and you will, because libinput
doesn't expose its libevdev context) then this doesn't apply to you and
you still get all events. And afaict you're not using libinput, right?
Cheers,
Peter
>
> Thanks,
> Roderick
>
> On Thu, Aug 24, 2017 at 11:48 PM, Peter Hutterer
> <peter.hutterer at who-t.net> wrote:
>> Devices tagged as accelerometers may also be other devices like tablet pads.
>> Only ignore pure accelerometer devices but disable the accelerometer axes for
>> devices that have multiple types.
>>
>> https://bugs.freedesktop.org/show_bug.cgi?id=102100
>>
>> Signed-off-by: Peter Hutterer <peter.hutterer at who-t.net>
>> ---
>> meson.build | 1 +
>> src/evdev.c | 20 +++-
>> test/litest-device-wacom-mobilestudio-pro-pad.c | 126 ++++++++++++++++++++++++
>> test/litest.c | 2 +
>> test/litest.h | 1 +
>> 5 files changed, 149 insertions(+), 1 deletion(-)
>> create mode 100644 test/litest-device-wacom-mobilestudio-pro-pad.c
>>
>> diff --git a/meson.build b/meson.build
>> index fe102086..ea5ae0b3 100644
>> --- a/meson.build
>> +++ b/meson.build
>> @@ -584,6 +584,7 @@ if get_option('tests')
>> 'test/litest-device-wacom-intuos5-pen.c',
>> 'test/litest-device-wacom-isdv4-e6-pen.c',
>> 'test/litest-device-wacom-isdv4-e6-finger.c',
>> + 'test/litest-device-wacom-mobilestudio-pro-pad.c',
>> 'test/litest-device-waltop-tablet.c',
>> 'test/litest-device-wheel-only.c',
>> 'test/litest-device-xen-virtual-pointer.c',
>> diff --git a/src/evdev.c b/src/evdev.c
>> index 9c90733f..1e76801b 100644
>> --- a/src/evdev.c
>> +++ b/src/evdev.c
>> @@ -2748,6 +2748,20 @@ evdev_extract_abs_axes(struct evdev_device *device)
>> device->is_mt = 1;
>> }
>>
>> +static void
>> +evdev_disable_accelerometer_axes(struct evdev_device *device)
>> +{
>> + struct libevdev *evdev = device->evdev;
>> +
>> + libevdev_disable_event_code(evdev, EV_ABS, ABS_X);
>> + libevdev_disable_event_code(evdev, EV_ABS, ABS_Y);
>> + libevdev_disable_event_code(evdev, EV_ABS, ABS_Z);
>> +
>> + libevdev_disable_event_code(evdev, EV_ABS, REL_X);
>> + libevdev_disable_event_code(evdev, EV_ABS, REL_Y);
>> + libevdev_disable_event_code(evdev, EV_ABS, REL_Z);
>> +}
>> +
>> static struct evdev_dispatch *
>> evdev_configure_device(struct evdev_device *device)
>> {
>> @@ -2779,10 +2793,14 @@ evdev_configure_device(struct evdev_device *device)
>> udev_tags & EVDEV_UDEV_TAG_TRACKBALL ? " Trackball" : "",
>> udev_tags & EVDEV_UDEV_TAG_SWITCH ? " Switch" : "");
>>
>> - if (udev_tags & EVDEV_UDEV_TAG_ACCELEROMETER) {
>> + /* Ignore pure accelerometers, but accept devices that are
>> + * accelerometers with other axes */
>> + if (udev_tags == (EVDEV_UDEV_TAG_INPUT|EVDEV_UDEV_TAG_ACCELEROMETER)) {
>> evdev_log_info(device,
>> "device is an accelerometer, ignoring\n");
>> return NULL;
>> + } else if (udev_tags & EVDEV_UDEV_TAG_ACCELEROMETER) {
>> + evdev_disable_accelerometer_axes(device);
>> }
>>
>> /* libwacom *adds* TABLET, TOUCHPAD but leaves JOYSTICK in place, so
>> diff --git a/test/litest-device-wacom-mobilestudio-pro-pad.c b/test/litest-device-wacom-mobilestudio-pro-pad.c
>> new file mode 100644
>> index 00000000..9e6a4593
>> --- /dev/null
>> +++ b/test/litest-device-wacom-mobilestudio-pro-pad.c
>> @@ -0,0 +1,126 @@
>> +/*
>> + * Copyright © 2017 Red Hat, Inc.
>> + *
>> + * Permission is hereby granted, free of charge, to any person obtaining a
>> + * copy of this software and associated documentation files (the "Software"),
>> + * to deal in the Software without restriction, including without limitation
>> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
>> + * and/or sell copies of the Software, and to permit persons to whom the
>> + * Software is furnished to do so, subject to the following conditions:
>> + *
>> + * The above copyright notice and this permission notice (including the next
>> + * paragraph) shall be included in all copies or substantial portions of the
>> + * Software.
>> + *
>> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
>> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
>> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
>> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
>> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
>> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
>> + * DEALINGS IN THE SOFTWARE.
>> + */
>> +
>> +#include "config.h"
>> +
>> +#include "litest.h"
>> +#include "litest-int.h"
>> +
>> +static void litest_wacom_mobilestudio_pad_setup(void)
>> +{
>> + struct litest_device *d = litest_create_device(LITEST_WACOM_MOBILESTUDIO_PRO_16_PAD);
>> + litest_set_current_device(d);
>> +}
>> +
>> +static struct input_event down[] = {
>> + { .type = -1, .code = -1 },
>> +};
>> +
>> +static struct input_event move[] = {
>> + { .type = -1, .code = -1 },
>> +};
>> +
>> +static struct input_event ring_start[] = {
>> + { .type = EV_ABS, .code = ABS_WHEEL, .value = LITEST_AUTO_ASSIGN },
>> + { .type = EV_ABS, .code = ABS_MISC, .value = 15 },
>> + { .type = EV_SYN, .code = SYN_REPORT, .value = 0 },
>> + { .type = -1, .code = -1 },
>> +} ;
>> +
>> +static struct input_event ring_change[] = {
>> + { .type = EV_ABS, .code = ABS_WHEEL, .value = LITEST_AUTO_ASSIGN },
>> + { .type = EV_SYN, .code = SYN_REPORT, .value = 0 },
>> + { .type = -1, .code = -1 },
>> +} ;
>> +
>> +static struct input_event ring_end[] = {
>> + { .type = EV_ABS, .code = ABS_WHEEL, .value = 0 },
>> + { .type = EV_ABS, .code = ABS_MISC, .value = 0 },
>> + { .type = EV_SYN, .code = SYN_REPORT, .value = 0 },
>> + { .type = -1, .code = -1 },
>> +} ;
>> +
>> +static struct litest_device_interface interface = {
>> + .touch_down_events = down,
>> + .touch_move_events = move,
>> + .pad_ring_start_events = ring_start,
>> + .pad_ring_change_events = ring_change,
>> + .pad_ring_end_events = ring_end,
>> +};
>> +static struct input_absinfo absinfo[] = {
>> + { ABS_X, -2048, 2048, 0, 0, 0 },
>> + { ABS_Y, -2048, 2048, 0, 0, 0 },
>> + { ABS_Z, -2048, 2048, 0, 0, 0 },
>> + { ABS_WHEEL, 0, 71, 0, 0, 0 },
>> + { ABS_MISC, 0, 0, 0, 0, 0 },
>> + { .value = -1 },
>> +};
>> +
>> +static struct input_id input_id = {
>> + .bustype = 0x3,
>> + .vendor = 0x56a,
>> + .product = 0x34e,
>> + .version = 0x110,
>> +};
>> +
>> +static int events[] = {
>> + EV_KEY, BTN_0,
>> + EV_KEY, BTN_1,
>> + EV_KEY, BTN_2,
>> + EV_KEY, BTN_3,
>> + EV_KEY, BTN_4,
>> + EV_KEY, BTN_5,
>> + EV_KEY, BTN_6,
>> + EV_KEY, BTN_7,
>> + EV_KEY, BTN_8,
>> + EV_KEY, BTN_SOUTH,
>> + EV_KEY, BTN_EAST,
>> + EV_KEY, BTN_C,
>> + EV_KEY, BTN_STYLUS,
>> + INPUT_PROP_MAX, INPUT_PROP_ACCELEROMETER,
>> + -1, -1,
>> +};
>> +
>> +static const char udev_rule[] =
>> +"ACTION==\"remove\", GOTO=\"pad_end\"\n"
>> +"KERNEL!=\"event*\", GOTO=\"pad_end\"\n"
>> +"\n"
>> +"ATTRS{name}==\"litest Wacom MobileStudio Pro 16 Pad*\",\\\n"
>> +" ENV{ID_INPUT_TABLET}=\"1\",\\\n"
>> +" ENV{ID_INPUT_TABLET_PAD}=\"1\"\\\n"
>> +"\n"
>> +"LABEL=\"pad_end\"";
>> +
>> +struct litest_test_device litest_wacom_mobilestudio_13hdt_pad_device = {
>> + .type = LITEST_WACOM_MOBILESTUDIO_PRO_16_PAD,
>> + .features = LITEST_TABLET_PAD | LITEST_RING,
>> + .shortname = "wacom-mobilestudio-pro16-pad",
>> + .setup = litest_wacom_mobilestudio_pad_setup,
>> + .interface = &interface,
>> +
>> + .name = "Wacom MobileStudio Pro 16 Pad",
>> + .id = &input_id,
>> + .events = events,
>> + .absinfo = absinfo,
>> + .udev_rule = udev_rule,
>> +};
>> diff --git a/test/litest.c b/test/litest.c
>> index cbc0c511..d832adc4 100644
>> --- a/test/litest.c
>> +++ b/test/litest.c
>> @@ -416,6 +416,7 @@ extern struct litest_test_device litest_lid_switch_surface3_device;
>> extern struct litest_test_device litest_appletouch_device;
>> extern struct litest_test_device litest_gpio_keys_device;
>> extern struct litest_test_device litest_ignored_mouse_device;
>> +extern struct litest_test_device litest_wacom_mobilestudio_13hdt_pad_device;
>>
>> struct litest_test_device* devices[] = {
>> &litest_synaptics_clickpad_device,
>> @@ -483,6 +484,7 @@ struct litest_test_device* devices[] = {
>> &litest_appletouch_device,
>> &litest_gpio_keys_device,
>> &litest_ignored_mouse_device,
>> + &litest_wacom_mobilestudio_13hdt_pad_device,
>> NULL,
>> };
>>
>> diff --git a/test/litest.h b/test/litest.h
>> index 150381ec..f33c05fa 100644
>> --- a/test/litest.h
>> +++ b/test/litest.h
>> @@ -236,6 +236,7 @@ enum litest_device_type {
>> LITEST_APPLETOUCH,
>> LITEST_GPIO_KEYS,
>> LITEST_IGNORED_MOUSE,
>> + LITEST_WACOM_MOBILESTUDIO_PRO_16_PAD,
>> };
>>
>> enum litest_device_feature {
>> --
>> 2.13.5
>>
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>> wayland-devel at lists.freedesktop.org
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>
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