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| author | Alexander Tsoy <alexander@tsoy.me> | 2019-06-30 00:32:00 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2019-06-30 00:35:25 -0700 |
| commit | 8d3c60c7688ec17c084417b7f6ac57a1d5f154e1 (patch) | |
| tree | e5260859ca5c09adeb003d8090042b4541f4ce0e /drivers/input | |
| parent | d69f62bed792fc0564198f2406151b0ea008b299 (diff) | |
| download | linux-8d3c60c7688ec17c084417b7f6ac57a1d5f154e1.tar.gz linux-8d3c60c7688ec17c084417b7f6ac57a1d5f154e1.tar.bz2 linux-8d3c60c7688ec17c084417b7f6ac57a1d5f154e1.zip | |
Input: joydev - extend absolute mouse detection
Extend event signature matching to catch more input devices emulated by
BMC firmwares, QEMU and VMware.
Signed-off-by: Alexander Tsoy <alexander@tsoy.me>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input')
| -rw-r--r-- | drivers/input/joydev.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/drivers/input/joydev.c b/drivers/input/joydev.c index 4c1e427dfabb..319c641edb93 100644 --- a/drivers/input/joydev.c +++ b/drivers/input/joydev.c @@ -812,6 +812,7 @@ static bool joydev_dev_is_blacklisted(struct input_dev *dev) static bool joydev_dev_is_absolute_mouse(struct input_dev *dev) { DECLARE_BITMAP(jd_scratch, KEY_CNT); + bool ev_match = false; BUILD_BUG_ON(ABS_CNT > KEY_CNT || EV_CNT > KEY_CNT); @@ -830,17 +831,36 @@ static bool joydev_dev_is_absolute_mouse(struct input_dev *dev) * considered to be an absolute mouse if the following is * true: * - * 1) Event types are exactly EV_ABS, EV_KEY and EV_SYN. + * 1) Event types are exactly + * EV_ABS, EV_KEY and EV_SYN + * or + * EV_ABS, EV_KEY, EV_SYN and EV_MSC + * or + * EV_ABS, EV_KEY, EV_SYN, EV_MSC and EV_REL. * 2) Absolute events are exactly ABS_X and ABS_Y. * 3) Keys are exactly BTN_LEFT, BTN_RIGHT and BTN_MIDDLE. * 4) Device is not on "Amiga" bus. */ bitmap_zero(jd_scratch, EV_CNT); + /* VMware VMMouse, HP ILO2 */ __set_bit(EV_ABS, jd_scratch); __set_bit(EV_KEY, jd_scratch); __set_bit(EV_SYN, jd_scratch); - if (!bitmap_equal(jd_scratch, dev->evbit, EV_CNT)) + if (bitmap_equal(jd_scratch, dev->evbit, EV_CNT)) + ev_match = true; + + /* HP ILO2, AMI BMC firmware */ + __set_bit(EV_MSC, jd_scratch); + if (bitmap_equal(jd_scratch, dev->evbit, EV_CNT)) + ev_match = true; + + /* VMware Virtual USB Mouse, QEMU USB Tablet, ATEN BMC firmware */ + __set_bit(EV_REL, jd_scratch); + if (bitmap_equal(jd_scratch, dev->evbit, EV_CNT)) + ev_match = true; + + if (!ev_match) return false; bitmap_zero(jd_scratch, ABS_CNT); |