HID: Ignore battery for Elan touchscreen on HP Envy X360 15t-dr100

Battery status on Elan tablet driver is reported for the HP ENVY x360
15t-dr100. There is no separate battery for the Elan controller resulting in a
battery level report of 0% or 1% depending on whether a stylus has interacted
with the screen. These low battery level reports causes a variety of bad
behavior in desktop environments. This patch adds the appropriate quirk to
indicate that the batery status is unused for this target.

Cc: stable@vger.kernel.org
Signed-off-by: Karl Kurbjun <kkurbjun@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 26cee45..8597503 100644 (file)
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -400,6 +400,7 @@
 #define USB_DEVICE_ID_HP_X2            0x074d
 #define USB_DEVICE_ID_HP_X2_10_COVER   0x0755
 #define I2C_DEVICE_ID_HP_ENVY_X360_15  0x2d05
+#define I2C_DEVICE_ID_HP_ENVY_X360_15T_DR100   0x29CF
 #define I2C_DEVICE_ID_HP_SPECTRE_X360_15       0x2817
 #define USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN 0x2544
 #define USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN   0x2706

diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 1ce75e8..112901d 100644 (file)
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -330,6 +330,8 @@ static const struct hid_device_id hid_battery_quirks[] = {
          HID_BATTERY_QUIRK_IGNORE },
        { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15),
          HID_BATTERY_QUIRK_IGNORE },
+       { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15T_DR100),
+         HID_BATTERY_QUIRK_IGNORE },
        { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_15),
          HID_BATTERY_QUIRK_IGNORE },
        { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO_TOUCHSCREEN),