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HID: lenovo: add support for Lenovo ThinkPad Keyboard Pro unit

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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 <lejono@gmail.com>
Tested-by: John Reid <owlman.lists@gmail.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Benjamin Tissoires 2015-05-01 16:22:45 -04:00 committed by Jiri Kosina
parent d92189ebbd
commit 181a8b911d
3 changed files with 33 additions and 0 deletions
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1
drivers/hid/hid-core.c
View File

@ -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) },

1
drivers/hid/hid-ids.h
View File

@ -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

31
drivers/hid/hid-lenovo.c
View File

@ -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);