[PATCH v2 2/2] Add support for Compact (Bluetooth|USB) keyboard with Trackpoint
From: Jamie Lentin
Date: Tue Jun 10 2014 - 18:46:12 EST
Signed-off-by: Jamie Lentin <jm@xxxxxxxxxxxx>
---
drivers/hid/hid-core.c | 2 +
drivers/hid/hid-ids.h | 2 +
drivers/hid/hid-lenovo-tpkbd.c | 203 +++++++++++++++++++++++++++++++++++++++++
include/linux/hid.h | 1 +
4 files changed, 208 insertions(+)
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 8a5384c..6591f4e 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1738,6 +1738,8 @@ static const struct hid_device_id hid_have_special_driver[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
#if IS_ENABLED(CONFIG_HID_LENOVO_TPKBD)
{ 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) },
#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 6e12cd0..1763a07 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -551,6 +551,8 @@
#define USB_VENDOR_ID_LENOVO 0x17ef
#define USB_DEVICE_ID_LENOVO_TPKBD 0x6009
+#define USB_DEVICE_ID_LENOVO_CUSBKBD 0x6047
+#define USB_DEVICE_ID_LENOVO_CBTKBD 0x6048
#define USB_VENDOR_ID_LG 0x1fd2
#define USB_DEVICE_ID_LG_MULTITOUCH 0x0064
diff --git a/drivers/hid/hid-lenovo-tpkbd.c b/drivers/hid/hid-lenovo-tpkbd.c
index 3bec9f5..1671e7a 100644
--- a/drivers/hid/hid-lenovo-tpkbd.c
+++ b/drivers/hid/hid-lenovo-tpkbd.c
@@ -1,8 +1,11 @@
/*
* HID driver for Lenovo:-
* * ThinkPad USB Keyboard with TrackPoint
+ * * ThinkPad Compact Bluetooth Keyboard with TrackPoint
+ * * ThinkPad Compact USB Keyboard with TrackPoint
*
* Copyright (c) 2012 Bernhard Seibold
+ * Copyright (c) 2014 Jamie Lentin <jm@xxxxxxxxxxxx>
*/
/*
@@ -34,6 +37,10 @@ struct tpkbd_data_pointer {
int press_speed;
};
+struct tpcompactkbd_sc {
+ unsigned int fn_lock;
+};
+
#define map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c))
static int tpkbd_input_mapping_tp(struct hid_device *hdev,
@@ -49,17 +56,154 @@ static int tpkbd_input_mapping_tp(struct hid_device *hdev,
return 0;
}
+static int tpcompactkbd_input_mapping(struct hid_device *hdev,
+ struct hid_input *hi, struct hid_field *field,
+ struct hid_usage *usage, unsigned long **bit, int *max)
+{
+ /* HID_UP_LNVENDOR = USB, HID_UP_MSVENDOR = BT */
+ if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR ||
+ (usage->hid & HID_USAGE_PAGE) == HID_UP_LNVENDOR) {
+ set_bit(EV_REP, hi->input->evbit);
+ switch (usage->hid & HID_USAGE) {
+ case 0x00f1: /* Fn-F4: Mic mute */
+ map_key_clear(KEY_MICMUTE);
+ return 1;
+ case 0x00f2: /* Fn-F5: Brightness down */
+ map_key_clear(KEY_BRIGHTNESSDOWN);
+ return 1;
+ case 0x00f3: /* Fn-F6: Brightness up */
+ map_key_clear(KEY_BRIGHTNESSUP);
+ return 1;
+ case 0x00f4: /* Fn-F7: External display (projector) */
+ map_key_clear(KEY_SWITCHVIDEOMODE);
+ return 1;
+ case 0x00f5: /* Fn-F8: Wireless */
+ map_key_clear(KEY_WLAN);
+ return 1;
+ case 0x00f6: /* Fn-F9: Control panel */
+ map_key_clear(KEY_CONFIG);
+ return 1;
+ case 0x00f8: /* Fn-F11: View open applications (3 boxes) */
+ map_key_clear(KEY_FN_F11);
+ return 1;
+ case 0x00fa: /* Fn-Esc: Fn-lock toggle */
+ map_key_clear(KEY_FN_ESC);
+ return 1;
+ case 0x00fb: /* Fn-F12: Open My computer (6 boxes) USB-only */
+ /* NB: This mapping is invented in raw_event below */
+ map_key_clear(KEY_FILE);
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
static int tpkbd_input_mapping(struct hid_device *hdev,
struct hid_input *hi, struct hid_field *field,
struct hid_usage *usage, unsigned long **bit, int *max)
{
if (hdev->product == USB_DEVICE_ID_LENOVO_TPKBD)
return tpkbd_input_mapping_tp(hdev, hi, field, usage, bit, max);
+ if (hdev->product == USB_DEVICE_ID_LENOVO_CUSBKBD)
+ return tpcompactkbd_input_mapping(hdev, hi, field, usage, bit, max);
+ if (hdev->product == USB_DEVICE_ID_LENOVO_CBTKBD)
+ return tpcompactkbd_input_mapping(hdev, hi, field, usage, bit, max);
return 0;
}
#undef map_key_clear
+/* Send a config command to the keyboard */
+static int tpcompactkbd_send_cmd(struct hid_device *hdev,
+ unsigned char byte2, unsigned char byte3)
+{
+ int ret;
+ unsigned char buf[] = {0x18, byte2, byte3};
+ unsigned char report_type = HID_OUTPUT_REPORT;
+
+ /* The USB keyboard accepts commands via SET_FEATURE */
+ if (hdev->product == USB_DEVICE_ID_LENOVO_CUSBKBD) {
+ buf[0] = 0x13;
+ report_type = HID_FEATURE_REPORT;
+ }
+
+ ret = hdev->hid_output_raw_report(hdev, buf, sizeof(buf), report_type);
+ return ret < 0 ? ret : 0; /* BT returns 0, USB returns sizeof(buf) */
+}
+
+static void tpcompactkbd_features_set(struct hid_device *hdev)
+{
+ struct tpcompactkbd_sc *tpcsc = hid_get_drvdata(hdev);
+
+ if (tpcompactkbd_send_cmd(hdev, 0x05, tpcsc->fn_lock ? 0x01 : 0x00))
+ hid_err(hdev, "Fn-lock setting failed\n");
+}
+
+static ssize_t tpcompactkbd_fn_lock_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct hid_device *hdev = container_of(dev, struct hid_device, dev);
+ struct tpcompactkbd_sc *tpcsc = hid_get_drvdata(hdev);
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", tpcsc->fn_lock);
+}
+
+static ssize_t tpcompactkbd_fn_lock_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ struct hid_device *hdev = container_of(dev, struct hid_device, dev);
+ struct tpcompactkbd_sc *tpcsc = hid_get_drvdata(hdev);
+ int value;
+
+ if (kstrtoint(buf, 10, &value))
+ return -EINVAL;
+ if (value < 0 || value > 1)
+ return -EINVAL;
+
+ tpcsc->fn_lock = value;
+ tpcompactkbd_features_set(hdev);
+
+ return count;
+}
+
+static struct device_attribute dev_attr_pointer_fn_lock =
+ __ATTR(fn_lock, S_IWUSR | S_IRUGO,
+ tpcompactkbd_fn_lock_show,
+ tpcompactkbd_fn_lock_store);
+
+static struct attribute *tpcompactkbd_attributes[] = {
+ &dev_attr_pointer_fn_lock.attr,
+ NULL
+};
+
+static const struct attribute_group tpcompactkbd_attr_group = {
+ .attrs = tpcompactkbd_attributes,
+};
+
+static int tpkbd_raw_event(struct hid_device *hdev,
+ struct hid_report *report, u8 *data, int size)
+{
+ /*
+ * USB keyboard's Fn-F12 report holds down many other keys, and it's
+ * own key is outside the usage page range. Remove extra keypresses and
+ * remap to inside usage page.
+ */
+ if (unlikely(hdev->product == USB_DEVICE_ID_LENOVO_CUSBKBD
+ && size == 3
+ && data[0] == 0x15
+ && data[1] == 0x94
+ && data[2] == 0x01)) {
+ data[1] = 0x0;
+ data[2] = 0x4;
+ }
+
+ return 0;
+}
+
static int tpkbd_features_set(struct hid_device *hdev)
{
struct hid_report *report;
@@ -406,6 +550,46 @@ static int tpkbd_probe_tp(struct hid_device *hdev)
return 0;
}
+static int tpcompactkbd_probe(struct hid_device *hdev,
+ const struct hid_device_id *id)
+{
+ int ret;
+ struct tpcompactkbd_sc *tpcsc;
+
+ tpcsc = devm_kzalloc(&hdev->dev, sizeof(*tpcsc), GFP_KERNEL);
+ if (tpcsc == NULL) {
+ hid_err(hdev, "can't alloc keyboard descriptor\n");
+ return -ENOMEM;
+ }
+ hid_set_drvdata(hdev, tpcsc);
+
+ /* All the custom action happens on the mouse device for USB */
+ if (hdev->product == USB_DEVICE_ID_LENOVO_CUSBKBD
+ && hdev->type != HID_TYPE_USBMOUSE) {
+ pr_debug("Ignoring keyboard half of device\n");
+ return 0;
+ }
+
+ /*
+ * Tell the keyboard a driver understands it, and turn F7, F9, F11 into
+ * regular keys
+ */
+ ret = tpcompactkbd_send_cmd(hdev, 0x01, 0x03);
+ if (ret)
+ hid_warn(hdev, "Failed to switch F7/9/11 into regular keys\n");
+
+ /* Turn Fn-Lock on by default */
+ tpcsc->fn_lock = 1;
+ tpcompactkbd_features_set(hdev);
+
+ if (sysfs_create_group(&hdev->dev.kobj,
+ &tpcompactkbd_attr_group)) {
+ hid_warn(hdev, "Could not create sysfs group\n");
+ }
+
+ return 0;
+}
+
static int tpkbd_probe(struct hid_device *hdev,
const struct hid_device_id *id)
{
@@ -426,6 +610,12 @@ static int tpkbd_probe(struct hid_device *hdev,
if (hdev->product == USB_DEVICE_ID_LENOVO_TPKBD
&& tpkbd_probe_tp(hdev))
goto err_hid;
+ if (hdev->product == USB_DEVICE_ID_LENOVO_CUSBKBD
+ && tpcompactkbd_probe(hdev, id))
+ goto err_hid;
+ if (hdev->product == USB_DEVICE_ID_LENOVO_CBTKBD
+ && tpcompactkbd_probe(hdev, id))
+ goto err_hid;
return 0;
err_hid:
@@ -447,6 +637,12 @@ static void tpkbd_remove_tp(struct hid_device *hdev)
hid_set_drvdata(hdev, NULL);
}
+static void tpcompactkbd_remove(struct hid_device *hdev)
+{
+ sysfs_remove_group(&hdev->dev.kobj,
+ &tpcompactkbd_attr_group);
+}
+
static void tpkbd_remove(struct hid_device *hdev)
{
if (!hid_get_drvdata(hdev))
@@ -454,12 +650,18 @@ static void tpkbd_remove(struct hid_device *hdev)
if (hdev->product == USB_DEVICE_ID_LENOVO_TPKBD)
tpkbd_remove_tp(hdev);
+ if (hdev->product == USB_DEVICE_ID_LENOVO_CUSBKBD)
+ tpcompactkbd_remove(hdev);
+ if (hdev->product == USB_DEVICE_ID_LENOVO_CBTKBD)
+ tpcompactkbd_remove(hdev);
hid_hw_stop(hdev);
}
static const struct hid_device_id tpkbd_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) },
{ }
};
@@ -471,6 +673,7 @@ static struct hid_driver tpkbd_driver = {
.input_mapping = tpkbd_input_mapping,
.probe = tpkbd_probe,
.remove = tpkbd_remove,
+ .raw_event = tpkbd_raw_event,
};
module_hid_driver(tpkbd_driver);
diff --git a/include/linux/hid.h b/include/linux/hid.h
index 31b9d29..ed23d6a 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -167,6 +167,7 @@ struct hid_item {
#define HID_UP_MSVENDOR 0xff000000
#define HID_UP_CUSTOM 0x00ff0000
#define HID_UP_LOGIVENDOR 0xffbc0000
+#define HID_UP_LNVENDOR 0xffa00000
#define HID_UP_SENSOR 0x00200000
#define HID_USAGE 0x0000ffff
--
2.0.0.rc2
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