[deliverable/linux.git] / drivers / hid / hid-lenovo.c

/*
 *  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");
Commit	Line	Data
c1dcad2d BS	1	/*
	2	* HID driver for Lenovo ThinkPad USB Keyboard with TrackPoint
	3	*
	4	* Copyright (c) 2012 Bernhard Seibold
	5	*/
	6
	7	/*
	8	* This program is free software; you can redistribute it and/or modify it
	9	* under the terms of the GNU General Public License as published by the Free
	10	* Software Foundation; either version 2 of the License, or (at your option)
	11	* any later version.
	12	*/
	13
	14	#include <linux/module.h>
	15	#include <linux/sysfs.h>
	16	#include <linux/device.h>
c1dcad2d BS	17	#include <linux/hid.h>
	18	#include <linux/input.h>
	19	#include <linux/leds.h>
c1dcad2d BS	20
	21	#include "hid-ids.h"
	22
94723bfa	23	struct lenovo_drvdata_tpkbd {
c1dcad2d BS	24	int led_state;
	25	struct led_classdev led_mute;
	26	struct led_classdev led_micmute;
	27	int press_to_select;
	28	int dragging;
	29	int release_to_select;
	30	int select_right;
	31	int sensitivity;
	32	int press_speed;
	33	};
	34
	35	#define map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c))
	36
94723bfa	37	static int lenovo_input_mapping_tpkbd(struct hid_device *hdev,
c1dcad2d BS	38	struct hid_input hi, struct hid_field field,
	39	struct hid_usage usage, unsigned long bit, int max)
	40	{
0c521836 BT	41	if (usage->hid == (HID_UP_BUTTON \| 0x0010)) {
	42	/* mark the device as pointer */
	43	hid_set_drvdata(hdev, (void *)1);
c1dcad2d BS	44	map_key_clear(KEY_MICMUTE);
	45	return 1;
	46	}
	47	return 0;
	48	}
	49
	50	#undef map_key_clear
	51
94723bfa	52	static int lenovo_features_set_tpkbd(struct hid_device *hdev)
c1dcad2d BS	53	{
c1dcad2d BS	54	struct hid_report *report;
94723bfa	55	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
c1dcad2d	56
c1dcad2d BS	57	report = hdev->report_enum[HID_FEATURE_REPORT].report_id_hash[4];
	58
	59	report->field[0]->value[0] = data_pointer->press_to_select ? 0x01 : 0x02;
	60	report->field[0]->value[0] \|= data_pointer->dragging ? 0x04 : 0x08;
	61	report->field[0]->value[0] \|= data_pointer->release_to_select ? 0x10 : 0x20;
	62	report->field[0]->value[0] \|= data_pointer->select_right ? 0x80 : 0x40;
	63	report->field[1]->value[0] = 0x03; // unknown setting, imitate windows driver
	64	report->field[2]->value[0] = data_pointer->sensitivity;
	65	report->field[3]->value[0] = data_pointer->press_speed;
	66
d8814272	67	hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
c1dcad2d BS	68	return 0;
	69	}
	70
94723bfa	71	static ssize_t attr_press_to_select_show_tpkbd(struct device *dev,
c1dcad2d BS	72	struct device_attribute *attr,
	73	char *buf)
	74	{
832fbeae	75	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
94723bfa	76	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
c1dcad2d BS	77
	78	return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->press_to_select);
	79	}
	80
94723bfa	81	static ssize_t attr_press_to_select_store_tpkbd(struct device *dev,
c1dcad2d BS	82	struct device_attribute *attr,
	83	const char *buf,
	84	size_t count)
	85	{
832fbeae	86	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
94723bfa	87	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
c1dcad2d BS	88	int value;
c1dcad2d BS	89
c1dcad2d BS	90	if (kstrtoint(buf, 10, &value))
	91	return -EINVAL;
	92	if (value < 0 \|\| value > 1)
	93	return -EINVAL;
	94
	95	data_pointer->press_to_select = value;
94723bfa	96	lenovo_features_set_tpkbd(hdev);
c1dcad2d BS	97
	98	return count;
	99	}
	100
94723bfa	101	static ssize_t attr_dragging_show_tpkbd(struct device *dev,
c1dcad2d BS	102	struct device_attribute *attr,
	103	char *buf)
	104	{
832fbeae	105	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
94723bfa	106	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
c1dcad2d BS	107
	108	return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->dragging);
	109	}
	110
94723bfa	111	static ssize_t attr_dragging_store_tpkbd(struct device *dev,
c1dcad2d BS	112	struct device_attribute *attr,
	113	const char *buf,
	114	size_t count)
	115	{
832fbeae	116	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
94723bfa	117	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
c1dcad2d BS	118	int value;
c1dcad2d BS	119
c1dcad2d BS	120	if (kstrtoint(buf, 10, &value))
	121	return -EINVAL;
	122	if (value < 0 \|\| value > 1)
	123	return -EINVAL;
	124
	125	data_pointer->dragging = value;
94723bfa	126	lenovo_features_set_tpkbd(hdev);
c1dcad2d BS	127
	128	return count;
	129	}
	130
94723bfa	131	static ssize_t attr_release_to_select_show_tpkbd(struct device *dev,
c1dcad2d BS	132	struct device_attribute *attr,
	133	char *buf)
	134	{
832fbeae	135	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
94723bfa	136	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
c1dcad2d BS	137
	138	return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->release_to_select);
	139	}
	140
94723bfa	141	static ssize_t attr_release_to_select_store_tpkbd(struct device *dev,
c1dcad2d BS	142	struct device_attribute *attr,
	143	const char *buf,
	144	size_t count)
	145	{
832fbeae	146	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
94723bfa	147	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
c1dcad2d BS	148	int value;
c1dcad2d BS	149
c1dcad2d BS	150	if (kstrtoint(buf, 10, &value))
	151	return -EINVAL;
	152	if (value < 0 \|\| value > 1)
	153	return -EINVAL;
	154
	155	data_pointer->release_to_select = value;
94723bfa	156	lenovo_features_set_tpkbd(hdev);
c1dcad2d BS	157
	158	return count;
	159	}
	160
94723bfa	161	static ssize_t attr_select_right_show_tpkbd(struct device *dev,
c1dcad2d BS	162	struct device_attribute *attr,
	163	char *buf)
	164	{
832fbeae	165	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
94723bfa	166	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
c1dcad2d BS	167
	168	return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->select_right);
	169	}
	170
94723bfa	171	static ssize_t attr_select_right_store_tpkbd(struct device *dev,
c1dcad2d BS	172	struct device_attribute *attr,
	173	const char *buf,
	174	size_t count)
	175	{
832fbeae	176	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
94723bfa	177	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
c1dcad2d BS	178	int value;
c1dcad2d BS	179
c1dcad2d BS	180	if (kstrtoint(buf, 10, &value))
	181	return -EINVAL;
	182	if (value < 0 \|\| value > 1)
	183	return -EINVAL;
	184
	185	data_pointer->select_right = value;
94723bfa	186	lenovo_features_set_tpkbd(hdev);
c1dcad2d BS	187
	188	return count;
	189	}
	190
94723bfa	191	static ssize_t attr_sensitivity_show_tpkbd(struct device *dev,
c1dcad2d BS	192	struct device_attribute *attr,
	193	char *buf)
	194	{
832fbeae	195	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
94723bfa	196	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
c1dcad2d BS	197
	198	return snprintf(buf, PAGE_SIZE, "%u\n",
	199	data_pointer->sensitivity);
	200	}
	201
94723bfa	202	static ssize_t attr_sensitivity_store_tpkbd(struct device *dev,
c1dcad2d BS	203	struct device_attribute *attr,
	204	const char *buf,
	205	size_t count)
	206	{
832fbeae	207	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
94723bfa	208	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
c1dcad2d BS	209	int value;
c1dcad2d BS	210
c1dcad2d BS	211	if (kstrtoint(buf, 10, &value) \|\| value < 1 \|\| value > 255)
	212	return -EINVAL;
	213
	214	data_pointer->sensitivity = value;
94723bfa	215	lenovo_features_set_tpkbd(hdev);
c1dcad2d BS	216
	217	return count;
	218	}
	219
94723bfa	220	static ssize_t attr_press_speed_show_tpkbd(struct device *dev,
c1dcad2d BS	221	struct device_attribute *attr,
	222	char *buf)
	223	{
832fbeae	224	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
94723bfa	225	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
c1dcad2d	226
c1dcad2d BS	227	return snprintf(buf, PAGE_SIZE, "%u\n",
	228	data_pointer->press_speed);
	229	}
	230
94723bfa	231	static ssize_t attr_press_speed_store_tpkbd(struct device *dev,
c1dcad2d BS	232	struct device_attribute *attr,
	233	const char *buf,
	234	size_t count)
	235	{
832fbeae	236	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
94723bfa	237	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
c1dcad2d BS	238	int value;
c1dcad2d BS	239
c1dcad2d BS	240	if (kstrtoint(buf, 10, &value) \|\| value < 1 \|\| value > 255)
	241	return -EINVAL;
	242
	243	data_pointer->press_speed = value;
94723bfa	244	lenovo_features_set_tpkbd(hdev);
c1dcad2d BS	245
	246	return count;
	247	}
	248
94723bfa	249	static struct device_attribute dev_attr_press_to_select_tpkbd =
c1dcad2d	250	__ATTR(press_to_select, S_IWUSR \| S_IRUGO,
94723bfa JL	251	attr_press_to_select_show_tpkbd,
94723bfa JL	252	attr_press_to_select_store_tpkbd);
c1dcad2d	253
94723bfa	254	static struct device_attribute dev_attr_dragging_tpkbd =
c1dcad2d	255	__ATTR(dragging, S_IWUSR \| S_IRUGO,
94723bfa JL	256	attr_dragging_show_tpkbd,
94723bfa JL	257	attr_dragging_store_tpkbd);
c1dcad2d	258
94723bfa	259	static struct device_attribute dev_attr_release_to_select_tpkbd =
c1dcad2d	260	__ATTR(release_to_select, S_IWUSR \| S_IRUGO,
94723bfa JL	261	attr_release_to_select_show_tpkbd,
94723bfa JL	262	attr_release_to_select_store_tpkbd);
c1dcad2d	263
94723bfa	264	static struct device_attribute dev_attr_select_right_tpkbd =
c1dcad2d	265	__ATTR(select_right, S_IWUSR \| S_IRUGO,
94723bfa JL	266	attr_select_right_show_tpkbd,
94723bfa JL	267	attr_select_right_store_tpkbd);
c1dcad2d	268
94723bfa	269	static struct device_attribute dev_attr_sensitivity_tpkbd =
c1dcad2d	270	__ATTR(sensitivity, S_IWUSR \| S_IRUGO,
94723bfa JL	271	attr_sensitivity_show_tpkbd,
94723bfa JL	272	attr_sensitivity_store_tpkbd);
c1dcad2d	273
94723bfa	274	static struct device_attribute dev_attr_press_speed_tpkbd =
c1dcad2d	275	__ATTR(press_speed, S_IWUSR \| S_IRUGO,
94723bfa JL	276	attr_press_speed_show_tpkbd,
	277	attr_press_speed_store_tpkbd);
	278
	279	static struct attribute *lenovo_attributes_tpkbd[] = {
	280	&dev_attr_press_to_select_tpkbd.attr,
	281	&dev_attr_dragging_tpkbd.attr,
	282	&dev_attr_release_to_select_tpkbd.attr,
	283	&dev_attr_select_right_tpkbd.attr,
	284	&dev_attr_sensitivity_tpkbd.attr,
	285	&dev_attr_press_speed_tpkbd.attr,
c1dcad2d BS	286	NULL
	287	};
	288
94723bfa JL	289	static const struct attribute_group lenovo_attr_group_tpkbd = {
94723bfa JL	290	.attrs = lenovo_attributes_tpkbd,
c1dcad2d BS	291	};
c1dcad2d BS	292
94723bfa	293	static enum led_brightness lenovo_led_brightness_get_tpkbd(
c1dcad2d BS	294	struct led_classdev *led_cdev)
c1dcad2d BS	295	{
832fbeae AL	296	struct device *dev = led_cdev->dev->parent;
832fbeae AL	297	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
94723bfa	298	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
c1dcad2d BS	299	int led_nr = 0;
c1dcad2d BS	300
c1dcad2d BS	301	if (led_cdev == &data_pointer->led_micmute)
	302	led_nr = 1;
	303
	304	return data_pointer->led_state & (1 << led_nr)
	305	? LED_FULL
	306	: LED_OFF;
	307	}
	308
94723bfa	309	static void lenovo_led_brightness_set_tpkbd(struct led_classdev *led_cdev,
c1dcad2d BS	310	enum led_brightness value)
c1dcad2d BS	311	{
832fbeae AL	312	struct device *dev = led_cdev->dev->parent;
832fbeae AL	313	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
94723bfa	314	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
c1dcad2d	315	struct hid_report *report;
c1dcad2d BS	316	int led_nr = 0;
c1dcad2d BS	317
c1dcad2d BS	318	if (led_cdev == &data_pointer->led_micmute)
	319	led_nr = 1;
	320
	321	if (value == LED_OFF)
	322	data_pointer->led_state &= ~(1 << led_nr);
	323	else
	324	data_pointer->led_state \|= 1 << led_nr;
	325
	326	report = hdev->report_enum[HID_OUTPUT_REPORT].report_id_hash[3];
	327	report->field[0]->value[0] = (data_pointer->led_state >> 0) & 1;
	328	report->field[0]->value[1] = (data_pointer->led_state >> 1) & 1;
d8814272	329	hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
c1dcad2d BS	330	}
c1dcad2d BS	331
94723bfa	332	static int lenovo_probe_tpkbd(struct hid_device *hdev)
c1dcad2d BS	333	{
c1dcad2d BS	334	struct device *dev = &hdev->dev;
94723bfa	335	struct lenovo_drvdata_tpkbd *data_pointer;
c1dcad2d BS	336	size_t name_sz = strlen(dev_name(dev)) + 16;
c1dcad2d BS	337	char name_mute, name_micmute;
01ab35f1	338	int i;
0a9cd0a8 KC	339
	340	/* Validate required reports. */
	341	for (i = 0; i < 4; i++) {
	342	if (!hid_validate_values(hdev, HID_FEATURE_REPORT, 4, i, 1))
	343	return -ENODEV;
	344	}
	345	if (!hid_validate_values(hdev, HID_OUTPUT_REPORT, 3, 0, 2))
	346	return -ENODEV;
c1dcad2d BS	347
c1dcad2d BS	348	if (sysfs_create_group(&hdev->dev.kobj,
94723bfa	349	&lenovo_attr_group_tpkbd)) {
c1dcad2d BS	350	hid_warn(hdev, "Could not create sysfs group\n");
	351	}
	352
01ab35f1	353	data_pointer = devm_kzalloc(&hdev->dev,
94723bfa	354	sizeof(struct lenovo_drvdata_tpkbd),
01ab35f1	355	GFP_KERNEL);
c1dcad2d BS	356	if (data_pointer == NULL) {
	357	hid_err(hdev, "Could not allocate memory for driver data\n");
	358	return -ENOMEM;
	359	}
	360
	361	// set same default values as windows driver
	362	data_pointer->sensitivity = 0xa0;
	363	data_pointer->press_speed = 0x38;
	364
01ab35f1 BT	365	name_mute = devm_kzalloc(&hdev->dev, name_sz, GFP_KERNEL);
	366	name_micmute = devm_kzalloc(&hdev->dev, name_sz, GFP_KERNEL);
	367	if (name_mute == NULL \|\| name_micmute == NULL) {
c1dcad2d	368	hid_err(hdev, "Could not allocate memory for led data\n");
01ab35f1	369	return -ENOMEM;
c1dcad2d BS	370	}
c1dcad2d BS	371	snprintf(name_mute, name_sz, "%s:amber:mute", dev_name(dev));
c1dcad2d BS	372	snprintf(name_micmute, name_sz, "%s:amber:micmute", dev_name(dev));
	373
	374	hid_set_drvdata(hdev, data_pointer);
	375
	376	data_pointer->led_mute.name = name_mute;
94723bfa JL	377	data_pointer->led_mute.brightness_get = lenovo_led_brightness_get_tpkbd;
94723bfa JL	378	data_pointer->led_mute.brightness_set = lenovo_led_brightness_set_tpkbd;
c1dcad2d BS	379	data_pointer->led_mute.dev = dev;
	380	led_classdev_register(dev, &data_pointer->led_mute);
	381
	382	data_pointer->led_micmute.name = name_micmute;
94723bfa JL	383	data_pointer->led_micmute.brightness_get =
	384	lenovo_led_brightness_get_tpkbd;
	385	data_pointer->led_micmute.brightness_set =
	386	lenovo_led_brightness_set_tpkbd;
c1dcad2d BS	387	data_pointer->led_micmute.dev = dev;
	388	led_classdev_register(dev, &data_pointer->led_micmute);
	389
94723bfa	390	lenovo_features_set_tpkbd(hdev);
c1dcad2d BS	391
c1dcad2d BS	392	return 0;
c1dcad2d BS	393	}
c1dcad2d BS	394
94723bfa	395	static int lenovo_probe(struct hid_device *hdev,
c1dcad2d BS	396	const struct hid_device_id *id)
	397	{
	398	int ret;
c1dcad2d BS	399
	400	ret = hid_parse(hdev);
	401	if (ret) {
	402	hid_err(hdev, "hid_parse failed\n");
0ccdd9e7	403	goto err;
c1dcad2d BS	404	}
	405
	406	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	407	if (ret) {
	408	hid_err(hdev, "hid_hw_start failed\n");
0ccdd9e7	409	goto err;
c1dcad2d BS	410	}
c1dcad2d BS	411
0c521836 BT	412	if (hid_get_drvdata(hdev)) {
0c521836 BT	413	hid_set_drvdata(hdev, NULL);
94723bfa	414	ret = lenovo_probe_tpkbd(hdev);
0ccdd9e7 BT	415	if (ret)
	416	goto err_hid;
	417	}
c1dcad2d BS	418
c1dcad2d BS	419	return 0;
0ccdd9e7 BT	420	err_hid:
	421	hid_hw_stop(hdev);
	422	err:
c1dcad2d BS	423	return ret;
	424	}
	425
94723bfa	426	static void lenovo_remove_tpkbd(struct hid_device *hdev)
c1dcad2d	427	{
94723bfa	428	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
c1dcad2d BS	429
c1dcad2d BS	430	sysfs_remove_group(&hdev->dev.kobj,
94723bfa	431	&lenovo_attr_group_tpkbd);
c1dcad2d	432
c1dcad2d BS	433	led_classdev_unregister(&data_pointer->led_micmute);
	434	led_classdev_unregister(&data_pointer->led_mute);
	435
	436	hid_set_drvdata(hdev, NULL);
c1dcad2d BS	437	}
c1dcad2d BS	438
94723bfa	439	static void lenovo_remove(struct hid_device *hdev)
c1dcad2d	440	{
0c521836	441	if (hid_get_drvdata(hdev))
94723bfa	442	lenovo_remove_tpkbd(hdev);
c1dcad2d BS	443
	444	hid_hw_stop(hdev);
	445	}
	446
94723bfa	447	static const struct hid_device_id lenovo_devices[] = {
c1dcad2d BS	448	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
	449	{ }
	450	};
	451
94723bfa	452	MODULE_DEVICE_TABLE(hid, lenovo_devices);
c1dcad2d	453
94723bfa JL	454	static struct hid_driver lenovo_driver = {
	455	.name = "lenovo",
	456	.id_table = lenovo_devices,
	457	.input_mapping = lenovo_input_mapping_tpkbd,
	458	.probe = lenovo_probe,
	459	.remove = lenovo_remove,
c1dcad2d	460	};
94723bfa	461	module_hid_driver(lenovo_driver);
c1dcad2d BS	462
c1dcad2d BS	463	MODULE_LICENSE("GPL");