Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752590AbbEAUXJ (ORCPT ); Fri, 1 May 2015 16:23:09 -0400 Received: from mx1.redhat.com ([209.132.183.28]:41442 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752181AbbEAUWv (ORCPT ); Fri, 1 May 2015 16:22:51 -0400 From: Benjamin Tissoires To: Jiri Kosina , Jonathan Oppenheim , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] HID: lenovo: add support for Lenovo ThinkPad Keyboard Pro unit Date: Fri, 1 May 2015 16:22:45 -0400 Message-Id: <1430511765-28209-1-git-send-email-benjamin.tissoires@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3960 Lines: 110 This dock is used with the Thinkpad Helix 2 but suffers from an error in the report descriptor where an usage max is 65535. Add a report fixup for it and make the keyboard working. Tested-by: Jonathan Oppenheim Signed-off-by: Benjamin Tissoires --- Jonathan, Compared to the patch I sent you last week, the only difference is that I removed a remnant debug line :) Cheers, Benjamin drivers/hid/hid-core.c | 1 + drivers/hid/hid-ids.h | 1 + drivers/hid/hid-lenovo.c | 31 +++++++++++++++++++++++++++++++ 3 files changed, 33 insertions(+) diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index 722a925..c2baf8c 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -1851,6 +1851,7 @@ static const struct hid_device_id hid_have_special_driver[] = { { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) }, { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CUSBKBD) }, { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CBTKBD) }, + { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPPRODOCK) }, #endif { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) }, { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) }, diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index b24caf8..e5b86e0 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -585,6 +585,7 @@ #define USB_DEVICE_ID_LENOVO_TPKBD 0x6009 #define USB_DEVICE_ID_LENOVO_CUSBKBD 0x6047 #define USB_DEVICE_ID_LENOVO_CBTKBD 0x6048 +#define USB_DEVICE_ID_LENOVO_TPPRODOCK 0x6067 #define USB_VENDOR_ID_LG 0x1fd2 #define USB_DEVICE_ID_LG_MULTITOUCH 0x0064 diff --git a/drivers/hid/hid-lenovo.c b/drivers/hid/hid-lenovo.c index 78608d6..4e291d5 100644 --- a/drivers/hid/hid-lenovo.c +++ b/drivers/hid/hid-lenovo.c @@ -43,6 +43,35 @@ struct lenovo_drvdata_cptkbd { #define map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c)) +static const __u8 lenovo_pro_dock_need_fixup_collection[] = { + 0x05, 0x88, /* Usage Page (Vendor Usage Page 0x88) */ + 0x09, 0x01, /* Usage (Vendor Usage 0x01) */ + 0xa1, 0x01, /* Collection (Application) */ + 0x85, 0x04, /* Report ID (4) */ + 0x19, 0x00, /* Usage Minimum (0) */ + 0x2a, 0xff, 0xff, /* Usage Maximum (65535) */ +}; + +static __u8 *lenovo_report_fixup(struct hid_device *hdev, __u8 *rdesc, + unsigned int *rsize) +{ + switch (hdev->product) { + case USB_DEVICE_ID_LENOVO_TPPRODOCK: + /* the fixups that need to be done: + * - get a reasonable usage max for the vendor collection + * 0x8801 from the report ID 4 + */ + if (*rsize >= 153 && + memcmp(&rdesc[140], lenovo_pro_dock_need_fixup_collection, + sizeof(lenovo_pro_dock_need_fixup_collection)) == 0) { + rdesc[151] = 0x01; + rdesc[152] = 0x00; + } + break; + } + return rdesc; +} + static int lenovo_input_mapping_tpkbd(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) @@ -784,6 +813,7 @@ static const struct hid_device_id lenovo_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) }, { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CUSBKBD) }, { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CBTKBD) }, + { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPPRODOCK) }, { } }; @@ -797,6 +827,7 @@ static struct hid_driver lenovo_driver = { .probe = lenovo_probe, .remove = lenovo_remove, .raw_event = lenovo_raw_event, + .report_fixup = lenovo_report_fixup, }; module_hid_driver(lenovo_driver); -- 2.3.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/