Lenovo trackpoints are adding the ability to generate a doubletap event.
This handles the doubletap event and sends the KEY_PROG1 event to
userspace.
Signed-off-by: Mark Pearson <mpearson-lenovo@xxxxxxxxx>
Signed-off-by: Vishnu Sankar <vishnuocv@xxxxxxxxx>
---
Changes in v2:
- Use KEY_PROG1 instead of KEY_DOUBLETAP as input maintainer doesn't
want new un-specific key codes added.
- Add doubletap to hotkey scan code table and use existing hotkey
functionality.
- Tested using evtest, and then gnome settings to configure a custom shortcut
to launch an application.
drivers/platform/x86/thinkpad_acpi.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 3b48d893280f..6d04d45e8d45 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -232,6 +232,9 @@ enum tpacpi_hkey_event_t {
/* Misc */
TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */
+
+ /* Misc2 */
+ TP_HKEY_EV_TRACK_DOUBLETAP = 0x8036, /* trackpoint doubletap */
};
/****************************************************************************
@@ -1786,6 +1789,7 @@ enum { /* hot key scan codes (derived from ACPI DSDT) */
TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER,
TP_ACPI_HOTKEYSCAN_PICKUP_PHONE,
TP_ACPI_HOTKEYSCAN_HANGUP_PHONE,
+ TP_ACPI_HOTKEYSCAN_DOUBLETAP,
/* Hotkey keymap size */
TPACPI_HOTKEY_MAP_LEN
@@ -3336,6 +3340,7 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
KEY_NOTIFICATION_CENTER, /* Notification Center */
KEY_PICKUP_PHONE, /* Answer incoming call */
KEY_HANGUP_PHONE, /* Decline incoming call */
+ KEY_PROG1, /* Trackpoint doubletap */
},
};
@@ -3996,6 +4001,15 @@ static bool hotkey_notify_6xxx(const u32 hkey,
return true;
}
+static bool hotkey_notify_8xxx(const u32 hkey)
+{
+ if (hkey == TP_HKEY_EV_TRACK_DOUBLETAP) {
+ tpacpi_input_send_key(TP_ACPI_HOTKEYSCAN_DOUBLETAP);
+ return true;
+ }
+ return false;
+}
+
static void hotkey_notify(struct ibm_struct *ibm, u32 event)
{
u32 hkey;
@@ -4079,6 +4093,10 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
known_ev = true;
}
break;
+ case 8:
+ /* 0x8000-0x8FFF: misc2 */
+ known_ev = hotkey_notify_8xxx(hkey);
+ break;
}
if (!known_ev) {
pr_notice("unhandled HKEY event 0x%04x\n", hkey);
--
2.44.0
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