| From bfe3c873e978d78b542a5852575dd74f4d1a5838 Mon Sep 17 00:00:00 2001 |
| From: Johan Hovold <johan@kernel.org> |
| Date: Fri, 5 Sep 2014 18:08:48 +0200 |
| Subject: HID: usbhid: enable always-poll quirk for Elan Touchscreen |
| |
| From: Johan Hovold <johan@kernel.org> |
| |
| commit bfe3c873e978d78b542a5852575dd74f4d1a5838 upstream. |
| |
| Enable the always-poll quirk for Elan Touchscreens found on some recent |
| Samsung laptops. |
| |
| Without this quirk the device keeps disconnecting from the bus (and is |
| re-enumerated) unless opened (and kept open, should an input event |
| occur). |
| |
| Note that while the device can be run-time suspended, the autosuspend |
| timeout must be high enough to allow the device to be polled at least |
| once before being suspended. Specifically, using autosuspend_delay_ms=0 |
| will still cause the device to disconnect on input events. |
| |
| Signed-off-by: Johan Hovold <johan@kernel.org> |
| Signed-off-by: Jiri Kosina <jkosina@suse.cz> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| drivers/hid/hid-ids.h | 3 +++ |
| drivers/hid/usbhid/hid-quirks.c | 1 + |
| 2 files changed, 4 insertions(+) |
| |
| --- a/drivers/hid/hid-ids.h |
| +++ b/drivers/hid/hid-ids.h |
| @@ -296,6 +296,9 @@ |
| #define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7 0x73f7 |
| #define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001 0xa001 |
| |
| +#define USB_VENDOR_ID_ELAN 0x04f3 |
| +#define USB_DEVICE_ID_ELAN_TOUCHSCREEN 0x0089 |
| + |
| #define USB_VENDOR_ID_ELECOM 0x056e |
| #define USB_DEVICE_ID_ELECOM_BM084 0x0061 |
| |
| --- a/drivers/hid/usbhid/hid-quirks.c |
| +++ b/drivers/hid/usbhid/hid-quirks.c |
| @@ -70,6 +70,7 @@ static const struct hid_blacklist { |
| { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_3AXIS_5BUTTON_STICK, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_AXIS_295, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_DMI, USB_DEVICE_ID_DMI_ENC, HID_QUIRK_NOGET }, |
| + { USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ELAN_TOUCHSCREEN, HID_QUIRK_ALWAYS_POLL }, |
| { USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_TS2700, HID_QUIRK_NOGET }, |
| { USB_VENDOR_ID_FORMOSA, USB_DEVICE_ID_FORMOSA_IR_RECEIVER, HID_QUIRK_NO_INIT_REPORTS }, |
| { USB_VENDOR_ID_FREESCALE, USB_DEVICE_ID_FREESCALE_MX28, HID_QUIRK_NOGET }, |
