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authorUlrik De Bie <ulrik.debie-os@e2big.org>2014-11-13 17:45:12 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2014-11-13 17:50:22 -0800
commitf386474e12a560e005ec7899e78f51f6bdc3cf41 (patch)
treee6de2dd71ca04297b169a81ae79afd3c7c5aa9bc /drivers
parenta7ef82aee91f26da79b981b9f5bca43b8817d3e4 (diff)
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/input/mouse/elantech.c19
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);

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