Add support for the Asus T100 touchpad in multi-touch mode (rather
then mouse emulation mode). It turns out that the Asus T100 touchpad
is identical to the already supported i2c-hid Asus touchpads, so
adding support for it was easy.
The only significant difference is that the reported x-coordinates
range on the T100 touchpad is somewhat lower then the range on the
already supported touchpads.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
drivers/hid/hid-asus.c | 21 ++++++++++++++++++---
1 file changed, 18 insertions(+), 3 deletions(-)
diff --git a/drivers/hid/hid-asus.c b/drivers/hid/hid-asus.c
index 101ab2e63d18..b4a6a53f8af2 100644
--- a/drivers/hid/hid-asus.c
+++ b/drivers/hid/hid-asus.c
@@ -29,6 +29,7 @@
#include <linux/hid.h>
#include <linux/module.h>
#include <linux/input/mt.h>
+#include <linux/usb.h> /* For to_usb_interface for T100 touchpad intf check */
#include "hid-ids.h"
@@ -38,6 +39,8 @@ MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@xxxxxxxxxxxx>");
MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@xxxxxxxxx>");
MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
+#define T100_TPAD_INTF 2
+
#define FEATURE_REPORT_ID 0x0d
#define INPUT_REPORT_ID 0x5d
#define FEATURE_KBD_REPORT_ID 0x5a
@@ -50,6 +53,7 @@ MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
#define MAX_CONTACTS 5
#define MAX_X 2794
+#define MAX_X_T100 2240
#define MAX_Y 1758
#define MAX_TOUCH_MAJOR 8
#define MAX_PRESSURE 128
@@ -70,11 +74,12 @@ MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
#define QUIRK_NO_CONSUMER_USAGES BIT(4)
#define QUIRK_USE_KBD_BACKLIGHT BIT(5)
#define QUIRK_T100_KEYBOARD BIT(6)
+#define QUIRK_T100_TOUCHPAD BIT(7)
#define I2C_KEYBOARD_QUIRKS (QUIRK_FIX_NOTEBOOK_REPORT | \
QUIRK_NO_INIT_REPORTS | \
QUIRK_NO_CONSUMER_USAGES)
-#define I2C_TOUCHPAD_QUIRKS (QUIRK_NO_INIT_REPORTS | \
+#define TOUCHPAD_QUIRKS (QUIRK_NO_INIT_REPORTS | \
QUIRK_SKIP_INPUT_MAPPING | \
QUIRK_IS_MULTITOUCH)
@@ -337,7 +342,10 @@ static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi)
if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
int ret;
- input_set_abs_params(input, ABS_MT_POSITION_X, 0, MAX_X, 0, 0);
+ if (drvdata->quirks & QUIRK_T100_TOUCHPAD)
+ input_set_abs_params(input, ABS_MT_POSITION_X, 0, MAX_X_T100, 0, 0);
+ else
+ input_set_abs_params(input, ABS_MT_POSITION_X, 0, MAX_X, 0, 0);
input_set_abs_params(input, ABS_MT_POSITION_Y, 0, MAX_Y, 0, 0);
input_set_abs_params(input, ABS_TOOL_WIDTH, 0, MAX_TOUCH_MAJOR, 0, 0);
input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, MAX_TOUCH_MAJOR, 0, 0);
@@ -490,6 +498,13 @@ static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
drvdata->quirks = id->driver_data;
+ if (drvdata->quirks & QUIRK_T100_KEYBOARD) {
+ struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
+
+ if (intf->altsetting->desc.bInterfaceNumber == T100_TPAD_INTF)
+ drvdata->quirks = TOUCHPAD_QUIRKS | QUIRK_T100_TOUCHPAD;
+ }
+
if (drvdata->quirks & QUIRK_NO_INIT_REPORTS)
hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
@@ -562,7 +577,7 @@ static const struct hid_device_id asus_devices[] = {
{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD), I2C_KEYBOARD_QUIRKS},
{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
- USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS },
+ USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), TOUCHPAD_QUIRKS },
{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
--
2.13.0
--
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