The Lenovo X1 Tablet Cover is connected via USB. It constists of
1 usb device with 3 usb interfaces. Interface 0 represents keyboard,
interface 1 the function / special keys and LED control, interface 2
is the Synaptics touchpad and pointing stick.
This patch will introduce the function / special keys handling of
USB interface 1.
---
drivers/hid/hid-core.c | 1 +
drivers/hid/hid-ids.h | 1 +
drivers/hid/hid-lenovo.c | 160 +++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 162 insertions(+)
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index cff060b..5b38afc 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1932,6 +1932,7 @@ void hid_disconnect(struct hid_device *hdev)
{ 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) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_X1_COVER) },
#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 ec277b9..961ee4f 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -623,6 +623,7 @@
#define USB_DEVICE_ID_LENOVO_CUSBKBD 0x6047
#define USB_DEVICE_ID_LENOVO_CBTKBD 0x6048
#define USB_DEVICE_ID_LENOVO_TPPRODOCK 0x6067
+#define USB_DEVICE_ID_LENOVO_X1_COVER 0x6085
#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 1ac4ff4..4fc332c 100644
--- a/drivers/hid/hid-lenovo.c
+++ b/drivers/hid/hid-lenovo.c
@@ -3,9 +3,11 @@
* - ThinkPad USB Keyboard with TrackPoint (tpkbd)
* - ThinkPad Compact Bluetooth Keyboard with TrackPoint (cptkbd)
* - ThinkPad Compact USB Keyboard with TrackPoint (cptkbd)
+ * - ThinkPad X1 Cover USB Keyboard with TrackPoint and Touchpad (tpx1cover)
*
* Copyright (c) 2012 Bernhard Seibold
* Copyright (c) 2014 Jamie Lentin <jm@xxxxxxxxxxxx>
+ * Copyright (c) 2016 Dennis Wassenberg <dennis.wassenberg@xxxxxxxxxxx>
*/
/*
@@ -86,6 +88,55 @@ static int lenovo_input_mapping_tpkbd(struct hid_device *hdev,
return 0;
}
+static int lenovo_input_mapping_tpx1cover(struct hid_device *hdev,
+ struct hid_input *hi, struct hid_field *field,
+ struct hid_usage *usage, unsigned long **bit, int *max)
+{
+ if (usage->hid == HID_CP_CONSUMERCONTROL) {
+ /* Unknown keys -> Idenditied by usage index! */
+ switch (usage->usage_index) {
+ case 8:
+ // FNLock key
+ return -1;
+
+ case 9:
+ input_set_capability(hi->input, EV_KEY, KEY_MICMUTE);
+ map_key_clear(KEY_MICMUTE);
+ return 1;
+
+ case 10:
+ input_set_capability(hi->input, EV_KEY, KEY_CONFIG);
+ map_key_clear(KEY_CONFIG);
+ return 1;
+
+ case 11:
+ input_set_capability(hi->input, EV_KEY, KEY_SEARCH);
+ map_key_clear(KEY_SEARCH);
+ return 1;
+
+ case 12:
+ input_set_capability(hi->input, EV_KEY, KEY_SETUP);
+ map_key_clear(KEY_SETUP);
+ return 1;
+
+ case 13:
+ input_set_capability(hi->input, EV_KEY, KEY_SWITCHVIDEOMODE);
+ map_key_clear(KEY_SWITCHVIDEOMODE);
+ return 1;
+
+ case 14:
+ input_set_capability(hi->input, EV_KEY, KEY_RFKILL);
+ map_key_clear(KEY_RFKILL);
+ return 1;
+
+ }
+
+ return -1;
+ }
+
+ return 0;
+}
+
static int lenovo_input_mapping_cptkbd(struct hid_device *hdev,
struct hid_input *hi, struct hid_field *field,
struct hid_usage *usage, unsigned long **bit, int *max)
@@ -172,6 +223,9 @@ static int lenovo_input_mapping(struct hid_device *hdev,
case USB_DEVICE_ID_LENOVO_CBTKBD:
return lenovo_input_mapping_cptkbd(hdev, hi, field,
usage, bit, max);
+ case USB_DEVICE_ID_LENOVO_X1_COVER:
+ return lenovo_input_mapping_tpx1cover(hdev, hi, field,
+ usage, bit, max);
default:
return 0;
}
@@ -731,6 +785,107 @@ static int lenovo_probe_tpkbd(struct hid_device *hdev)
return ret;
}
+static int lenovo_probe_tpx1cover_configure(struct hid_device *hdev)
+{
+ struct hid_report *report = hdev->report_enum[HID_OUTPUT_REPORT].report_id_hash[9];
+
+ if (!report)
+ return -ENOENT;
+
+ report->field[0]->value[0] = 0x54;
+ report->field[0]->value[1] = 0x20;
+ hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
+ hid_hw_wait(hdev);
+
+ report->field[0]->value[0] = 0x54;
+ report->field[0]->value[1] = 0x08;
+ hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
+ hid_hw_wait(hdev);
+
+ report->field[0]->value[0] = 0xA0;
+ report->field[0]->value[1] = 0x02;
+ hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
+ hid_hw_wait(hdev);
+
+ return 0;
+}
+
+static int lenovo_probe_tpx1cover_special_functions(struct hid_device *hdev)
+{
+ struct hid_report *report;
+ bool report_match = 1;
+
+ /* Used for LED control */
+ report = hid_validate_values(hdev, HID_INPUT_REPORT, 3, 0, 16);
+ report_match &= report ? 1 : 0;
+ /* Identify USB Intf 1 which is the only one with HID_FEATURE_REPORT 100 */
+ report = hid_validate_values(hdev, HID_FEATURE_REPORT, 100, 0, 1);
+ report_match &= report ? 1 : 0;
+
+ if (!report_match)
+ return -ENODEV;
+
+ return lenovo_probe_tpx1cover_configure(hdev);
+}
+
+static int lenovo_probe_tpx1cover_touch(struct hid_device *hdev)
+{
+ struct hid_report *report;
+ bool report_match = 1;
+ int ret = 0;
+
+ /* Identify USB Intf 2 which is the only one with HID_FEATURE_REPORT 15 */
+ report = hid_validate_values(hdev, HID_FEATURE_REPORT, 15, 0, 3);
+ report_match &= report ? 1 : 0;
+
+ if (!report_match)
+ ret = -ENODEV;
+
+ return ret;
+}
+
+static int lenovo_probe_tpx1cover_keyboard(struct hid_device *hdev)
+{
+ struct hid_report *report;
+ bool report_match = 1;
+ int ret = 0;
+
+ /* Identify USB Intf0 which is the only one with HID_INPUT_REPORT 0
+ * and HID_OUTPUT_REPORT 0 */
+ report = hid_validate_values(hdev, HID_INPUT_REPORT, 0, 0, 1);
+ report_match &= report ? 1 : 0;
+ report = hid_validate_values(hdev, HID_OUTPUT_REPORT, 0, 0, 1);
+ report_match &= report ? 1 : 0;
+
+ if (!report_match)
+ ret = -ENODEV;
+
+ return ret;
+}
+
+static int lenovo_probe_tpx1cover(struct hid_device *hdev)
+{
+ int ret = 0;
+
+ /*
+ * Probing for special function keys and LED control -> usb intf 1
+ * Probing for touch input -> usb intf 2 (handled by rmi4 driver)
+ * Other (keyboard) -> usb intf 0
+ */
+ if (!lenovo_probe_tpx1cover_special_functions(hdev)) {
+ /* special function keys and LED control */
+ ret = 0;
+ } else if (!lenovo_probe_tpx1cover_touch(hdev)) {
+ /* handled by rmi */
+ ret = -ENODEV;
+ } else {
+ /* keyboard */
+ ret = lenovo_probe_tpx1cover_keyboard(hdev);
+ }
+
+ return ret;
+}
+
static int lenovo_probe_cptkbd(struct hid_device *hdev)
{
int ret;
@@ -803,6 +958,9 @@ static int lenovo_probe(struct hid_device *hdev,
case USB_DEVICE_ID_LENOVO_CBTKBD:
ret = lenovo_probe_cptkbd(hdev);
break;
+ case USB_DEVICE_ID_LENOVO_X1_COVER:
+ ret = lenovo_probe_tpx1cover(hdev);
+ break;
default:
ret = 0;
break;
@@ -883,6 +1041,7 @@ static int lenovo_input_configured(struct hid_device *hdev,
{ 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) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_X1_COVER) },
{ }
};
@@ -902,3 +1061,4 @@ static int lenovo_input_configured(struct hid_device *hdev,
module_hid_driver(lenovo_driver);
MODULE_LICENSE("GPL");
+
--
1.9.1
--
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