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author | Jamie Lentin <jm@lentin.co.uk> | 2014-07-23 23:30:45 +0100 |
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committer | Jiri Kosina <jkosina@suse.cz> | 2014-07-29 11:24:46 +0200 |
commit | 94723bfa7bf1b647fe49c9717ee02e99d7a59957 (patch) | |
tree | 22a5aaffc5e0634c591f6ba51dd256cac96641f9 /drivers/hid/hid-lenovo.c | |
parent | 4c2f503aade27ebf12f5733a583d711f99dc5ec1 (diff) | |
download | linux-94723bfa7bf1b647fe49c9717ee02e99d7a59957.tar.gz linux-94723bfa7bf1b647fe49c9717ee02e99d7a59957.tar.bz2 linux-94723bfa7bf1b647fe49c9717ee02e99d7a59957.zip |
HID: lenovo: Rename hid-lenovo-tpkbd to hid-lenovo
Rename module and all functions within so we can add support for other
keyboards in the same file. Rename the _tp postfix to _tpkbd, to
signify functions relevant to the TP USB keyboard.
Signed-off-by: Jamie Lentin <jm@lentin.co.uk>
Reviewed-by: Antonio Ospite <ao2@ao2.it>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-lenovo.c')
-rw-r--r-- | drivers/hid/hid-lenovo.c | 463 |
1 files changed, 463 insertions, 0 deletions
diff --git a/drivers/hid/hid-lenovo.c b/drivers/hid/hid-lenovo.c new file mode 100644 index 000000000000..0320b96ddf24 --- /dev/null +++ b/drivers/hid/hid-lenovo.c @@ -0,0 +1,463 @@ +/* + * HID driver for Lenovo ThinkPad USB Keyboard with TrackPoint + * + * Copyright (c) 2012 Bernhard Seibold + */ + +/* + * 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; +}; + +#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)) { + /* mark the device as pointer */ + hid_set_drvdata(hdev, (void *)1); + map_key_clear(KEY_MICMUTE); + return 1; + } + return 0; +} + +#undef map_key_clear + +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; + + /* 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; + + if (sysfs_create_group(&hdev->dev.kobj, + &lenovo_attr_group_tpkbd)) { + hid_warn(hdev, "Could not create sysfs group\n"); + } + + 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(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; + } + + if (hid_get_drvdata(hdev)) { + hid_set_drvdata(hdev, NULL); + ret = lenovo_probe_tpkbd(hdev); + 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); + + 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(struct hid_device *hdev) +{ + if (hid_get_drvdata(hdev)) + lenovo_remove_tpkbd(hdev); + + hid_hw_stop(hdev); +} + +static const struct hid_device_id lenovo_devices[] = { + { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) }, + { } +}; + +MODULE_DEVICE_TABLE(hid, lenovo_devices); + +static struct hid_driver lenovo_driver = { + .name = "lenovo", + .id_table = lenovo_devices, + .input_mapping = lenovo_input_mapping_tpkbd, + .probe = lenovo_probe, + .remove = lenovo_remove, +}; +module_hid_driver(lenovo_driver); + +MODULE_LICENSE("GPL"); |