PenMount USB resistive touchscreen reports it has three buttons, while in reality it doesn't have any and doesn't support active styli, and only generates touch events.
Signed-off-by: Andrew Shadura <[email protected]> --- drivers/hid/hid-penmount.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/hid/hid-penmount.c b/drivers/hid/hid-penmount.c index c11dce8..4e12502 100644 --- a/drivers/hid/hid-penmount.c +++ b/drivers/hid/hid-penmount.c @@ -30,6 +30,21 @@ static int penmount_input_mapping(struct hid_device *hdev, return 0; } +static __u8 *penmount_report_fixup(struct hid_device *hdev, __u8 *rdesc, + unsigned int *rsize) +{ + if (*rsize == 76 && + rdesc[2] == 0x09 && rdesc[3] == 0x02 /* mouse */ && + rdesc[22] == 0x05 && rdesc[23] == 0x09 /* button */ && + rdesc[26] == 0x29 && rdesc[27] == 0x03 /* maximum */) { + hid_info(hdev, + "fixing up PenMount USB touchscreen report descriptor\n"); + + rdesc[27] = 0x01; /* just one button */ + } + return rdesc; +} + static const struct hid_device_id penmount_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_6000) }, { } @@ -39,6 +54,7 @@ MODULE_DEVICE_TABLE(hid, penmount_devices); static struct hid_driver penmount_driver = { .name = "hid-penmount", .id_table = penmount_devices, + .report_fixup = penmount_report_fixup, .input_mapping = penmount_input_mapping, }; -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
