[PATCH] HID: elan: Add support for ELAN SB974D touchpad

[Damien Dejean]

Elan SB974D touchpad uses ELAN_MT_I2C format to send HID reports. Add an
entry to match for the device and parse its vendor specific format.

Signed-off-by: Damien Dejean <damiendejean@xxxxxxxxxx>
Signed-off-by: Kornel Dulęba <korneld@xxxxxxxxxx>
---
 drivers/hid/hid-elan.c | 1 +
 drivers/hid/hid-ids.h  | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/hid/hid-elan.c b/drivers/hid/hid-elan.c
index 76d93fc48f6a..0190ad567ce4 100644
--- a/drivers/hid/hid-elan.c
+++ b/drivers/hid/hid-elan.c
@@ -513,6 +513,7 @@ static const struct hid_device_id elan_devices[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_HP_X2_10_COVER),
 	  .driver_data = ELAN_HAS_LED },
 	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_TOSHIBA_CLICK_L9W) },
+	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_SB974D) },
 	{ }
 };
 MODULE_DEVICE_TABLE(hid, elan_devices);
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 0cf63742315b..8cfec7dced66 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -455,6 +455,7 @@
 #define USB_DEVICE_ID_EDIFIER_QR30	0xa101	/* EDIFIER Hal0 2.0 SE */
 
 #define USB_VENDOR_ID_ELAN		0x04f3
+#define USB_DEVICE_ID_SB974D            0x0400
 #define USB_DEVICE_ID_TOSHIBA_CLICK_L9W	0x0401
 #define USB_DEVICE_ID_HP_X2		0x074d
 #define USB_DEVICE_ID_HP_X2_10_COVER	0x0755
-- 
2.54.0.rc0.605.g598a273b03-goog