HID: lenovo: Add support for Compact (BT|USB) keyboard

Add support for both ThinkPad Compact Bluetooth Keyboard with
TrackPoint and ThinkPad Compact USB Keyboard with TrackPoint.

Signed-off-by: Jamie Lentin <jm@lentin.co.uk>
Reviewed-by: Antonio Ospite <ao2@ao2.it>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Jamie Lentin
2014-07-23 23:30:48 +01:00
committed by Jiri Kosina
parent e0a6aad601
commit f3d4ff0e04
6 changed files with 227 additions and 0 deletions

View File

@@ -1,8 +1,11 @@
/*
* HID driver for Lenovo:
* - ThinkPad USB Keyboard with TrackPoint (tpkbd)
* - ThinkPad Compact Bluetooth Keyboard with TrackPoint (cptkbd)
* - ThinkPad Compact USB Keyboard with TrackPoint (cptkbd)
*
* Copyright (c) 2012 Bernhard Seibold
* Copyright (c) 2014 Jamie Lentin <jm@lentin.co.uk>
*/
/*
@@ -33,6 +36,10 @@ struct lenovo_drvdata_tpkbd {
int press_speed;
};
struct lenovo_drvdata_cptkbd {
bool fn_lock;
};
#define map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c))
static int lenovo_input_mapping_tpkbd(struct hid_device *hdev,
@@ -48,6 +55,49 @@ static int lenovo_input_mapping_tpkbd(struct hid_device *hdev,
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)
{
/* 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_SCALE);
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 lenovo_input_mapping(struct hid_device *hdev,
struct hid_input *hi, struct hid_field *field,
struct hid_usage *usage, unsigned long **bit, int *max)
@@ -56,6 +106,10 @@ static int lenovo_input_mapping(struct hid_device *hdev,
case USB_DEVICE_ID_LENOVO_TPKBD:
return lenovo_input_mapping_tpkbd(hdev, hi, field,
usage, bit, max);
case USB_DEVICE_ID_LENOVO_CUSBKBD:
case USB_DEVICE_ID_LENOVO_CBTKBD:
return lenovo_input_mapping_cptkbd(hdev, hi, field,
usage, bit, max);
default:
return 0;
}
@@ -63,6 +117,103 @@ static int lenovo_input_mapping(struct hid_device *hdev,
#undef map_key_clear
/* Send a config command to the keyboard */
static int lenovo_send_cmd_cptkbd(struct hid_device *hdev,
unsigned char byte2, unsigned char byte3)
{
int ret;
unsigned char buf[] = {0x18, byte2, byte3};
switch (hdev->product) {
case USB_DEVICE_ID_LENOVO_CUSBKBD:
ret = hid_hw_raw_request(hdev, 0x13, buf, sizeof(buf),
HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
break;
case USB_DEVICE_ID_LENOVO_CBTKBD:
ret = hid_hw_output_report(hdev, buf, sizeof(buf));
break;
default:
ret = -EINVAL;
break;
}
return ret < 0 ? ret : 0; /* BT returns 0, USB returns sizeof(buf) */
}
static void lenovo_features_set_cptkbd(struct hid_device *hdev)
{
int ret;
struct lenovo_drvdata_cptkbd *cptkbd_data = hid_get_drvdata(hdev);
ret = lenovo_send_cmd_cptkbd(hdev, 0x05, cptkbd_data->fn_lock);
if (ret)
hid_err(hdev, "Fn-lock setting failed: %d\n", ret);
}
static ssize_t attr_fn_lock_show_cptkbd(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct hid_device *hdev = container_of(dev, struct hid_device, dev);
struct lenovo_drvdata_cptkbd *cptkbd_data = hid_get_drvdata(hdev);
return snprintf(buf, PAGE_SIZE, "%u\n", cptkbd_data->fn_lock);
}
static ssize_t attr_fn_lock_store_cptkbd(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 lenovo_drvdata_cptkbd *cptkbd_data = hid_get_drvdata(hdev);
int value;
if (kstrtoint(buf, 10, &value))
return -EINVAL;
if (value < 0 || value > 1)
return -EINVAL;
cptkbd_data->fn_lock = !!value;
lenovo_features_set_cptkbd(hdev);
return count;
}
static struct device_attribute dev_attr_fn_lock_cptkbd =
__ATTR(fn_lock, S_IWUSR | S_IRUGO,
attr_fn_lock_show_cptkbd,
attr_fn_lock_store_cptkbd);
static struct attribute *lenovo_attributes_cptkbd[] = {
&dev_attr_fn_lock_cptkbd.attr,
NULL
};
static const struct attribute_group lenovo_attr_group_cptkbd = {
.attrs = lenovo_attributes_cptkbd,
};
static int lenovo_raw_event(struct hid_device *hdev,
struct hid_report *report, u8 *data, int size)
{
/*
* Compact USB keyboard's Fn-F12 report holds down many other keys, and
* its 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 lenovo_features_set_tpkbd(struct hid_device *hdev)
{
struct hid_report *report;
@@ -415,6 +566,46 @@ static int lenovo_probe_tpkbd(struct hid_device *hdev)
return 0;
}
static int lenovo_probe_cptkbd(struct hid_device *hdev)
{
int ret;
struct lenovo_drvdata_cptkbd *cptkbd_data;
/* All the custom action happens on the USBMOUSE device for USB */
if (hdev->product == USB_DEVICE_ID_LENOVO_CUSBKBD
&& hdev->type != HID_TYPE_USBMOUSE) {
hid_dbg(hdev, "Ignoring keyboard half of device\n");
return 0;
}
cptkbd_data = devm_kzalloc(&hdev->dev,
sizeof(*cptkbd_data),
GFP_KERNEL);
if (cptkbd_data == NULL) {
hid_err(hdev, "can't alloc keyboard descriptor\n");
return -ENOMEM;
}
hid_set_drvdata(hdev, cptkbd_data);
/*
* Tell the keyboard a driver understands it, and turn F7, F9, F11 into
* regular keys
*/
ret = lenovo_send_cmd_cptkbd(hdev, 0x01, 0x03);
if (ret)
hid_warn(hdev, "Failed to switch F7/9/11 mode: %d\n", ret);
/* Turn Fn-Lock on by default */
cptkbd_data->fn_lock = true;
lenovo_features_set_cptkbd(hdev);
ret = sysfs_create_group(&hdev->dev.kobj, &lenovo_attr_group_cptkbd);
if (ret)
hid_warn(hdev, "Could not create sysfs group: %d\n", ret);
return 0;
}
static int lenovo_probe(struct hid_device *hdev,
const struct hid_device_id *id)
{
@@ -436,6 +627,10 @@ static int lenovo_probe(struct hid_device *hdev,
case USB_DEVICE_ID_LENOVO_TPKBD:
ret = lenovo_probe_tpkbd(hdev);
break;
case USB_DEVICE_ID_LENOVO_CUSBKBD:
case USB_DEVICE_ID_LENOVO_CBTKBD:
ret = lenovo_probe_cptkbd(hdev);
break;
default:
ret = 0;
break;
@@ -470,12 +665,22 @@ static void lenovo_remove_tpkbd(struct hid_device *hdev)
hid_set_drvdata(hdev, NULL);
}
static void lenovo_remove_cptkbd(struct hid_device *hdev)
{
sysfs_remove_group(&hdev->dev.kobj,
&lenovo_attr_group_cptkbd);
}
static void lenovo_remove(struct hid_device *hdev)
{
switch (hdev->product) {
case USB_DEVICE_ID_LENOVO_TPKBD:
lenovo_remove_tpkbd(hdev);
break;
case USB_DEVICE_ID_LENOVO_CUSBKBD:
case USB_DEVICE_ID_LENOVO_CBTKBD:
lenovo_remove_cptkbd(hdev);
break;
}
hid_hw_stop(hdev);
@@ -483,6 +688,8 @@ static void lenovo_remove(struct hid_device *hdev)
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) },
{ }
};
@@ -494,6 +701,7 @@ static struct hid_driver lenovo_driver = {
.input_mapping = lenovo_input_mapping,
.probe = lenovo_probe,
.remove = lenovo_remove,
.raw_event = lenovo_raw_event,
};
module_hid_driver(lenovo_driver);