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| author |   Ulrik De Bie <ulrik.debie-os@e2big.org> | 2014-11-13 17:45:12 -0800 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-11-13 17:50:22 -0800 |
| commit | f386474e12a560e005ec7899e78f51f6bdc3cf41 (patch) | |
| tree | e6de2dd71ca04297b169a81ae79afd3c7c5aa9bc | |
| parent | Input: alps - ignore bad data on Dell Latitudes E6440 and E7440 (diff) | |
| download | linux-dev-f386474e12a560e005ec7899e78f51f6bdc3cf41.tar.xz linux-dev-f386474e12a560e005ec7899e78f51f6bdc3cf41.zip | |
Input: elantech - report the middle button of the touchpad
In the past, no elantech was known with 3 touchpad mouse buttons.
Fujitsu H730 is the first known elantech with a middle button. This commit
enables this middle button. For backwards compatibility, the Fujitsu is
detected via DMI, and only for this one 3 buttons will be announced.
Reported-by: Stefan Valouch <stefan@valouch.com>
Signed-off-by: Ulrik De Bie <ulrik.debie-os@e2big.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
| -rw-r--r-- | drivers/input/mouse/elantech.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index ce699eba9adc..6d628f155c08 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -563,6 +563,7 @@ static void elantech_input_sync_v4(struct psmouse *psmouse) } else { input_report_key(dev, BTN_LEFT, packet[0] & 0x01); input_report_key(dev, BTN_RIGHT, packet[0] & 0x02); + input_report_key(dev, BTN_MIDDLE, packet[0] & 0x04); } input_mt_report_pointer_emulation(dev, true); @@ -1132,6 +1133,22 @@ static void elantech_set_buttonpad_prop(struct psmouse *psmouse) } /* + * Some hw_version 4 models do have a middle button + */ +static const struct dmi_system_id elantech_dmi_has_middle_button[] = { +#if defined(CONFIG_DMI) && defined(CONFIG_X86) + { + /* Fujitsu H730 has a middle button */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), + DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H730"), + }, + }, +#endif + { } +}; + +/* * Set the appropriate event bits for the input subsystem */ static int elantech_set_input_params(struct psmouse *psmouse) @@ -1150,6 +1167,8 @@ static int elantech_set_input_params(struct psmouse *psmouse) __clear_bit(EV_REL, dev->evbit); __set_bit(BTN_LEFT, dev->keybit); + if (dmi_check_system(elantech_dmi_has_middle_button)) + __set_bit(BTN_MIDDLE, dev->keybit); __set_bit(BTN_RIGHT, dev->keybit); __set_bit(BTN_TOUCH, dev->keybit); |