diff options
Diffstat (limited to 'drivers/hid/hid-lenovo.c')
| -rw-r--r-- | drivers/hid/hid-lenovo.c | 708 |
1 files changed, 708 insertions, 0 deletions
diff --git a/drivers/hid/hid-lenovo.c b/drivers/hid/hid-lenovo.c new file mode 100644 index 00000000000..bf227f7679a --- /dev/null +++ b/drivers/hid/hid-lenovo.c @@ -0,0 +1,708 @@ +/* + * 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> + */ + +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + */ + +#include <linux/module.h> +#include <linux/sysfs.h> +#include <linux/device.h> +#include <linux/hid.h> +#include <linux/input.h> +#include <linux/leds.h> + +#include "hid-ids.h" + +struct lenovo_drvdata_tpkbd { + int led_state; + struct led_classdev led_mute; + struct led_classdev led_micmute; + int press_to_select; + int dragging; + int release_to_select; + int select_right; + int sensitivity; + 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, + struct hid_input *hi, struct hid_field *field, + struct hid_usage *usage, unsigned long **bit, int *max) +{ + if (usage->hid == (HID_UP_BUTTON | 0x0010)) { + /* This sub-device contains trackpoint, mark it */ + hid_set_drvdata(hdev, (void *)1); + map_key_clear(KEY_MICMUTE); + 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) +{ + /* 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) +{ + switch (hdev->product) { + 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; + } +} + +#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; + struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev); + + report = hdev->report_enum[HID_FEATURE_REPORT].report_id_hash[4]; + + report->field[0]->value[0] = data_pointer->press_to_select ? 0x01 : 0x02; + report->field[0]->value[0] |= data_pointer->dragging ? 0x04 : 0x08; + report->field[0]->value[0] |= data_pointer->release_to_select ? 0x10 : 0x20; + report->field[0]->value[0] |= data_pointer->select_right ? 0x80 : 0x40; + report->field[1]->value[0] = 0x03; // unknown setting, imitate windows driver + report->field[2]->value[0] = data_pointer->sensitivity; + report->field[3]->value[0] = data_pointer->press_speed; + + hid_hw_request(hdev, report, HID_REQ_SET_REPORT); + return 0; +} + +static ssize_t attr_press_to_select_show_tpkbd(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct hid_device *hdev = container_of(dev, struct hid_device, dev); + struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev); + + return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->press_to_select); +} + +static ssize_t attr_press_to_select_store_tpkbd(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_tpkbd *data_pointer = hid_get_drvdata(hdev); + int value; + + if (kstrtoint(buf, 10, &value)) + return -EINVAL; + if (value < 0 || value > 1) + return -EINVAL; + + data_pointer->press_to_select = value; + lenovo_features_set_tpkbd(hdev); + + return count; +} + +static ssize_t attr_dragging_show_tpkbd(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct hid_device *hdev = container_of(dev, struct hid_device, dev); + struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev); + + return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->dragging); +} + +static ssize_t attr_dragging_store_tpkbd(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_tpkbd *data_pointer = hid_get_drvdata(hdev); + int value; + + if (kstrtoint(buf, 10, &value)) + return -EINVAL; + if (value < 0 || value > 1) + return -EINVAL; + + data_pointer->dragging = value; + lenovo_features_set_tpkbd(hdev); + + return count; +} + +static ssize_t attr_release_to_select_show_tpkbd(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct hid_device *hdev = container_of(dev, struct hid_device, dev); + struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev); + + return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->release_to_select); +} + +static ssize_t attr_release_to_select_store_tpkbd(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_tpkbd *data_pointer = hid_get_drvdata(hdev); + int value; + + if (kstrtoint(buf, 10, &value)) + return -EINVAL; + if (value < 0 || value > 1) + return -EINVAL; + + data_pointer->release_to_select = value; + lenovo_features_set_tpkbd(hdev); + + return count; +} + +static ssize_t attr_select_right_show_tpkbd(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct hid_device *hdev = container_of(dev, struct hid_device, dev); + struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev); + + return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->select_right); +} + +static ssize_t attr_select_right_store_tpkbd(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_tpkbd *data_pointer = hid_get_drvdata(hdev); + int value; + + if (kstrtoint(buf, 10, &value)) + return -EINVAL; + if (value < 0 || value > 1) + return -EINVAL; + + data_pointer->select_right = value; + lenovo_features_set_tpkbd(hdev); + + return count; +} + +static ssize_t attr_sensitivity_show_tpkbd(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct hid_device *hdev = container_of(dev, struct hid_device, dev); + struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev); + + return snprintf(buf, PAGE_SIZE, "%u\n", + data_pointer->sensitivity); +} + +static ssize_t attr_sensitivity_store_tpkbd(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_tpkbd *data_pointer = hid_get_drvdata(hdev); + int value; + + if (kstrtoint(buf, 10, &value) || value < 1 || value > 255) + return -EINVAL; + + data_pointer->sensitivity = value; + lenovo_features_set_tpkbd(hdev); + + return count; +} + +static ssize_t attr_press_speed_show_tpkbd(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct hid_device *hdev = container_of(dev, struct hid_device, dev); + struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev); + + return snprintf(buf, PAGE_SIZE, "%u\n", + data_pointer->press_speed); +} + +static ssize_t attr_press_speed_store_tpkbd(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_tpkbd *data_pointer = hid_get_drvdata(hdev); + int value; + + if (kstrtoint(buf, 10, &value) || value < 1 || value > 255) + return -EINVAL; + + data_pointer->press_speed = value; + lenovo_features_set_tpkbd(hdev); + + return count; +} + +static struct device_attribute dev_attr_press_to_select_tpkbd = + __ATTR(press_to_select, S_IWUSR | S_IRUGO, + attr_press_to_select_show_tpkbd, + attr_press_to_select_store_tpkbd); + +static struct device_attribute dev_attr_dragging_tpkbd = + __ATTR(dragging, S_IWUSR | S_IRUGO, + attr_dragging_show_tpkbd, + attr_dragging_store_tpkbd); + +static struct device_attribute dev_attr_release_to_select_tpkbd = + __ATTR(release_to_select, S_IWUSR | S_IRUGO, + attr_release_to_select_show_tpkbd, + attr_release_to_select_store_tpkbd); + +static struct device_attribute dev_attr_select_right_tpkbd = + __ATTR(select_right, S_IWUSR | S_IRUGO, + attr_select_right_show_tpkbd, + attr_select_right_store_tpkbd); + +static struct device_attribute dev_attr_sensitivity_tpkbd = + __ATTR(sensitivity, S_IWUSR | S_IRUGO, + attr_sensitivity_show_tpkbd, + attr_sensitivity_store_tpkbd); + +static struct device_attribute dev_attr_press_speed_tpkbd = + __ATTR(press_speed, S_IWUSR | S_IRUGO, + attr_press_speed_show_tpkbd, + attr_press_speed_store_tpkbd); + +static struct attribute *lenovo_attributes_tpkbd[] = { + &dev_attr_press_to_select_tpkbd.attr, + &dev_attr_dragging_tpkbd.attr, + &dev_attr_release_to_select_tpkbd.attr, + &dev_attr_select_right_tpkbd.attr, + &dev_attr_sensitivity_tpkbd.attr, + &dev_attr_press_speed_tpkbd.attr, + NULL +}; + +static const struct attribute_group lenovo_attr_group_tpkbd = { + .attrs = lenovo_attributes_tpkbd, +}; + +static enum led_brightness lenovo_led_brightness_get_tpkbd( + struct led_classdev *led_cdev) +{ + struct device *dev = led_cdev->dev->parent; + struct hid_device *hdev = container_of(dev, struct hid_device, dev); + struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev); + int led_nr = 0; + + if (led_cdev == &data_pointer->led_micmute) + led_nr = 1; + + return data_pointer->led_state & (1 << led_nr) + ? LED_FULL + : LED_OFF; +} + +static void lenovo_led_brightness_set_tpkbd(struct led_classdev *led_cdev, + enum led_brightness value) +{ + struct device *dev = led_cdev->dev->parent; + struct hid_device *hdev = container_of(dev, struct hid_device, dev); + struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev); + struct hid_report *report; + int led_nr = 0; + + if (led_cdev == &data_pointer->led_micmute) + led_nr = 1; + + if (value == LED_OFF) + data_pointer->led_state &= ~(1 << led_nr); + else + data_pointer->led_state |= 1 << led_nr; + + report = hdev->report_enum[HID_OUTPUT_REPORT].report_id_hash[3]; + report->field[0]->value[0] = (data_pointer->led_state >> 0) & 1; + report->field[0]->value[1] = (data_pointer->led_state >> 1) & 1; + hid_hw_request(hdev, report, HID_REQ_SET_REPORT); +} + +static int lenovo_probe_tpkbd(struct hid_device *hdev) +{ + struct device *dev = &hdev->dev; + struct lenovo_drvdata_tpkbd *data_pointer; + size_t name_sz = strlen(dev_name(dev)) + 16; + char *name_mute, *name_micmute; + int i; + int ret; + + /* + * Only register extra settings against subdevice where input_mapping + * set drvdata to 1, i.e. the trackpoint. + */ + if (!hid_get_drvdata(hdev)) + return 0; + + hid_set_drvdata(hdev, NULL); + + /* Validate required reports. */ + for (i = 0; i < 4; i++) { + if (!hid_validate_values(hdev, HID_FEATURE_REPORT, 4, i, 1)) + return -ENODEV; + } + if (!hid_validate_values(hdev, HID_OUTPUT_REPORT, 3, 0, 2)) + return -ENODEV; + + ret = sysfs_create_group(&hdev->dev.kobj, &lenovo_attr_group_tpkbd); + if (ret) + hid_warn(hdev, "Could not create sysfs group: %d\n", ret); + + data_pointer = devm_kzalloc(&hdev->dev, + sizeof(struct lenovo_drvdata_tpkbd), + GFP_KERNEL); + if (data_pointer == NULL) { + hid_err(hdev, "Could not allocate memory for driver data\n"); + return -ENOMEM; + } + + // set same default values as windows driver + data_pointer->sensitivity = 0xa0; + data_pointer->press_speed = 0x38; + + name_mute = devm_kzalloc(&hdev->dev, name_sz, GFP_KERNEL); + name_micmute = devm_kzalloc(&hdev->dev, name_sz, GFP_KERNEL); + if (name_mute == NULL || name_micmute == NULL) { + hid_err(hdev, "Could not allocate memory for led data\n"); + return -ENOMEM; + } + snprintf(name_mute, name_sz, "%s:amber:mute", dev_name(dev)); + snprintf(name_micmute, name_sz, "%s:amber:micmute", dev_name(dev)); + + hid_set_drvdata(hdev, data_pointer); + + data_pointer->led_mute.name = name_mute; + data_pointer->led_mute.brightness_get = lenovo_led_brightness_get_tpkbd; + data_pointer->led_mute.brightness_set = lenovo_led_brightness_set_tpkbd; + data_pointer->led_mute.dev = dev; + led_classdev_register(dev, &data_pointer->led_mute); + + data_pointer->led_micmute.name = name_micmute; + data_pointer->led_micmute.brightness_get = + lenovo_led_brightness_get_tpkbd; + data_pointer->led_micmute.brightness_set = + lenovo_led_brightness_set_tpkbd; + data_pointer->led_micmute.dev = dev; + led_classdev_register(dev, &data_pointer->led_micmute); + + lenovo_features_set_tpkbd(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) +{ + int ret; + + ret = hid_parse(hdev); + if (ret) { + hid_err(hdev, "hid_parse failed\n"); + goto err; + } + + ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); + if (ret) { + hid_err(hdev, "hid_hw_start failed\n"); + goto err; + } + + switch (hdev->product) { + 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; + } + if (ret) + goto err_hid; + + return 0; +err_hid: + hid_hw_stop(hdev); +err: + return ret; +} + +static void lenovo_remove_tpkbd(struct hid_device *hdev) +{ + struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev); + + /* + * Only the trackpoint half of the keyboard has drvdata and stuff that + * needs unregistering. + */ + if (data_pointer == NULL) + return; + + sysfs_remove_group(&hdev->dev.kobj, + &lenovo_attr_group_tpkbd); + + led_classdev_unregister(&data_pointer->led_micmute); + led_classdev_unregister(&data_pointer->led_mute); + + 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); +} + +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) }, + { } +}; + +MODULE_DEVICE_TABLE(hid, lenovo_devices); + +static struct hid_driver lenovo_driver = { + .name = "lenovo", + .id_table = lenovo_devices, + .input_mapping = lenovo_input_mapping, + .probe = lenovo_probe, + .remove = lenovo_remove, + .raw_event = lenovo_raw_event, +}; +module_hid_driver(lenovo_driver); + +MODULE_LICENSE("GPL"); |