hid-wiimote-modules.c 78.2 KB
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/*
 * Device Modules for Nintendo Wii / Wii U HID Driver
 * Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com>
 */

/*
 * 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.
 */

/*
 * Wiimote Modules
 * Nintendo devices provide different peripherals and many new devices lack
 * initial features like the IR camera. Therefore, each peripheral device is
 * implemented as an independent module and we probe on each device only the
 * modules for the hardware that really is available.
 *
 * Module registration is sequential. Unregistration is done in reverse order.
 * After device detection, the needed modules are loaded. Users can trigger
 * re-detection which causes all modules to be unloaded and then reload the
 * modules for the new detected device.
 *
 * wdata->input is a shared input device. It is always initialized prior to
 * module registration. If at least one registered module is marked as
 * WIIMOD_FLAG_INPUT, then the input device will get registered after all
 * modules were registered.
 * Please note that it is unregistered _before_ the "remove" callbacks are
 * called. This guarantees that no input interaction is done, anymore. However,
 * the wiimote core keeps a reference to the input device so it is freed only
 * after all modules were removed. It is safe to send events to unregistered
 * input devices.
 */

#include <linux/device.h>
#include <linux/hid.h>
#include <linux/input.h>
#include <linux/spinlock.h>
#include "hid-wiimote.h"

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/*
 * Keys
 * The initial Wii Remote provided a bunch of buttons that are reported as
 * part of the core protocol. Many later devices dropped these and report
 * invalid data in the core button reports. Load this only on devices which
 * correctly send button reports.
 * It uses the shared input device.
 */

static const __u16 wiimod_keys_map[] = {
	KEY_LEFT,	/* WIIPROTO_KEY_LEFT */
	KEY_RIGHT,	/* WIIPROTO_KEY_RIGHT */
	KEY_UP,		/* WIIPROTO_KEY_UP */
	KEY_DOWN,	/* WIIPROTO_KEY_DOWN */
	KEY_NEXT,	/* WIIPROTO_KEY_PLUS */
	KEY_PREVIOUS,	/* WIIPROTO_KEY_MINUS */
	BTN_1,		/* WIIPROTO_KEY_ONE */
	BTN_2,		/* WIIPROTO_KEY_TWO */
	BTN_A,		/* WIIPROTO_KEY_A */
	BTN_B,		/* WIIPROTO_KEY_B */
	BTN_MODE,	/* WIIPROTO_KEY_HOME */
};

static void wiimod_keys_in_keys(struct wiimote_data *wdata, const __u8 *keys)
{
	input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_LEFT],
							!!(keys[0] & 0x01));
	input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_RIGHT],
							!!(keys[0] & 0x02));
	input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_DOWN],
							!!(keys[0] & 0x04));
	input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_UP],
							!!(keys[0] & 0x08));
	input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_PLUS],
							!!(keys[0] & 0x10));
	input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_TWO],
							!!(keys[1] & 0x01));
	input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_ONE],
							!!(keys[1] & 0x02));
	input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_B],
							!!(keys[1] & 0x04));
	input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_A],
							!!(keys[1] & 0x08));
	input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_MINUS],
							!!(keys[1] & 0x10));
	input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_HOME],
							!!(keys[1] & 0x80));
	input_sync(wdata->input);
}

static int wiimod_keys_probe(const struct wiimod_ops *ops,
			     struct wiimote_data *wdata)
{
	unsigned int i;

	set_bit(EV_KEY, wdata->input->evbit);
	for (i = 0; i < WIIPROTO_KEY_COUNT; ++i)
		set_bit(wiimod_keys_map[i], wdata->input->keybit);

	return 0;
}

static const struct wiimod_ops wiimod_keys = {
	.flags = WIIMOD_FLAG_INPUT,
	.arg = 0,
	.probe = wiimod_keys_probe,
	.remove = NULL,
	.in_keys = wiimod_keys_in_keys,
};

/*
 * Rumble
 * Nearly all devices provide a rumble feature. A small motor for
 * force-feedback effects. We provide an FF_RUMBLE memless ff device on the
 * shared input device if this module is loaded.
 * The rumble motor is controlled via a flag on almost every output report so
 * the wiimote core handles the rumble flag. But if a device doesn't provide
 * the rumble motor, this flag shouldn't be set.
 */

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/* used by wiimod_rumble and wiipro_rumble */
static void wiimod_rumble_worker(struct work_struct *work)
{
	struct wiimote_data *wdata = container_of(work, struct wiimote_data,
						  rumble_worker);

	spin_lock_irq(&wdata->state.lock);
	wiiproto_req_rumble(wdata, wdata->state.cache_rumble);
	spin_unlock_irq(&wdata->state.lock);
}

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static int wiimod_rumble_play(struct input_dev *dev, void *data,
			      struct ff_effect *eff)
{
	struct wiimote_data *wdata = input_get_drvdata(dev);
	__u8 value;

	/*
	 * The wiimote supports only a single rumble motor so if any magnitude
	 * is set to non-zero then we start the rumble motor. If both are set to
	 * zero, we stop the rumble motor.
	 */

	if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude)
		value = 1;
	else
		value = 0;

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	/* Locking state.lock here might deadlock with input_event() calls.
	 * schedule_work acts as barrier. Merging multiple changes is fine. */
	wdata->state.cache_rumble = value;
	schedule_work(&wdata->rumble_worker);
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	return 0;
}

static int wiimod_rumble_probe(const struct wiimod_ops *ops,
			       struct wiimote_data *wdata)
{
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	INIT_WORK(&wdata->rumble_worker, wiimod_rumble_worker);

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	set_bit(FF_RUMBLE, wdata->input->ffbit);
	if (input_ff_create_memless(wdata->input, NULL, wiimod_rumble_play))
		return -ENOMEM;

	return 0;
}

static void wiimod_rumble_remove(const struct wiimod_ops *ops,
				 struct wiimote_data *wdata)
{
	unsigned long flags;

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	cancel_work_sync(&wdata->rumble_worker);

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	spin_lock_irqsave(&wdata->state.lock, flags);
	wiiproto_req_rumble(wdata, 0);
	spin_unlock_irqrestore(&wdata->state.lock, flags);
}

static const struct wiimod_ops wiimod_rumble = {
	.flags = WIIMOD_FLAG_INPUT,
	.arg = 0,
	.probe = wiimod_rumble_probe,
	.remove = wiimod_rumble_remove,
};

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/*
 * Battery
 * 1 byte of battery capacity information is sent along every protocol status
 * report. The wiimote core caches it but we try to update it on every
 * user-space request.
 * This is supported by nearly every device so it's almost always enabled.
 */

static enum power_supply_property wiimod_battery_props[] = {
	POWER_SUPPLY_PROP_CAPACITY,
	POWER_SUPPLY_PROP_SCOPE,
};

static int wiimod_battery_get_property(struct power_supply *psy,
				       enum power_supply_property psp,
				       union power_supply_propval *val)
{
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	struct wiimote_data *wdata = power_supply_get_drvdata(psy);
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	int ret = 0, state;
	unsigned long flags;

	if (psp == POWER_SUPPLY_PROP_SCOPE) {
		val->intval = POWER_SUPPLY_SCOPE_DEVICE;
		return 0;
	} else if (psp != POWER_SUPPLY_PROP_CAPACITY) {
		return -EINVAL;
	}

	ret = wiimote_cmd_acquire(wdata);
	if (ret)
		return ret;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wiimote_cmd_set(wdata, WIIPROTO_REQ_SREQ, 0);
	wiiproto_req_status(wdata);
	spin_unlock_irqrestore(&wdata->state.lock, flags);

	wiimote_cmd_wait(wdata);
	wiimote_cmd_release(wdata);

	spin_lock_irqsave(&wdata->state.lock, flags);
	state = wdata->state.cmd_battery;
	spin_unlock_irqrestore(&wdata->state.lock, flags);

	val->intval = state * 100 / 255;
	return ret;
}

static int wiimod_battery_probe(const struct wiimod_ops *ops,
				struct wiimote_data *wdata)
{
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	struct power_supply_config psy_cfg = { .drv_data = wdata, };
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	int ret;

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	wdata->battery_desc.properties = wiimod_battery_props;
	wdata->battery_desc.num_properties = ARRAY_SIZE(wiimod_battery_props);
	wdata->battery_desc.get_property = wiimod_battery_get_property;
	wdata->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
	wdata->battery_desc.use_for_apm = 0;
	wdata->battery_desc.name = kasprintf(GFP_KERNEL, "wiimote_battery_%s",
					     wdata->hdev->uniq);
	if (!wdata->battery_desc.name)
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		return -ENOMEM;

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	wdata->battery = power_supply_register(&wdata->hdev->dev,
					       &wdata->battery_desc,
					       &psy_cfg);
	if (IS_ERR(wdata->battery)) {
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		hid_err(wdata->hdev, "cannot register battery device\n");
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		ret = PTR_ERR(wdata->battery);
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		goto err_free;
	}

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	power_supply_powers(wdata->battery, &wdata->hdev->dev);
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	return 0;

err_free:
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	kfree(wdata->battery_desc.name);
	wdata->battery_desc.name = NULL;
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	return ret;
}

static void wiimod_battery_remove(const struct wiimod_ops *ops,
				  struct wiimote_data *wdata)
{
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	if (!wdata->battery_desc.name)
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		return;

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	power_supply_unregister(wdata->battery);
	kfree(wdata->battery_desc.name);
	wdata->battery_desc.name = NULL;
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}

static const struct wiimod_ops wiimod_battery = {
	.flags = 0,
	.arg = 0,
	.probe = wiimod_battery_probe,
	.remove = wiimod_battery_remove,
};

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/*
 * LED
 * 0 to 4 player LEDs are supported by devices. The "arg" field of the
 * wiimod_ops structure specifies which LED this module controls. This allows
 * to register a limited number of LEDs.
 * State is managed by wiimote core.
 */

static enum led_brightness wiimod_led_get(struct led_classdev *led_dev)
{
	struct device *dev = led_dev->dev->parent;
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	struct wiimote_data *wdata = dev_to_wii(dev);
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	int i;
	unsigned long flags;
	bool value = false;

	for (i = 0; i < 4; ++i) {
		if (wdata->leds[i] == led_dev) {
			spin_lock_irqsave(&wdata->state.lock, flags);
			value = wdata->state.flags & WIIPROTO_FLAG_LED(i + 1);
			spin_unlock_irqrestore(&wdata->state.lock, flags);
			break;
		}
	}

	return value ? LED_FULL : LED_OFF;
}

static void wiimod_led_set(struct led_classdev *led_dev,
			   enum led_brightness value)
{
	struct device *dev = led_dev->dev->parent;
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	struct wiimote_data *wdata = dev_to_wii(dev);
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	int i;
	unsigned long flags;
	__u8 state, flag;

	for (i = 0; i < 4; ++i) {
		if (wdata->leds[i] == led_dev) {
			flag = WIIPROTO_FLAG_LED(i + 1);
			spin_lock_irqsave(&wdata->state.lock, flags);
			state = wdata->state.flags;
			if (value == LED_OFF)
				wiiproto_req_leds(wdata, state & ~flag);
			else
				wiiproto_req_leds(wdata, state | flag);
			spin_unlock_irqrestore(&wdata->state.lock, flags);
			break;
		}
	}
}

static int wiimod_led_probe(const struct wiimod_ops *ops,
			    struct wiimote_data *wdata)
{
	struct device *dev = &wdata->hdev->dev;
	size_t namesz = strlen(dev_name(dev)) + 9;
	struct led_classdev *led;
	unsigned long flags;
	char *name;
	int ret;

	led = kzalloc(sizeof(struct led_classdev) + namesz, GFP_KERNEL);
	if (!led)
		return -ENOMEM;

	name = (void*)&led[1];
	snprintf(name, namesz, "%s:blue:p%lu", dev_name(dev), ops->arg);
	led->name = name;
	led->brightness = 0;
	led->max_brightness = 1;
	led->brightness_get = wiimod_led_get;
	led->brightness_set = wiimod_led_set;

	wdata->leds[ops->arg] = led;
	ret = led_classdev_register(dev, led);
	if (ret)
		goto err_free;

	/* enable LED1 to stop initial LED-blinking */
	if (ops->arg == 0) {
		spin_lock_irqsave(&wdata->state.lock, flags);
		wiiproto_req_leds(wdata, WIIPROTO_FLAG_LED1);
		spin_unlock_irqrestore(&wdata->state.lock, flags);
	}

	return 0;

err_free:
	wdata->leds[ops->arg] = NULL;
	kfree(led);
	return ret;
}

static void wiimod_led_remove(const struct wiimod_ops *ops,
			      struct wiimote_data *wdata)
{
	if (!wdata->leds[ops->arg])
		return;

	led_classdev_unregister(wdata->leds[ops->arg]);
	kfree(wdata->leds[ops->arg]);
	wdata->leds[ops->arg] = NULL;
}

static const struct wiimod_ops wiimod_leds[4] = {
	{
		.flags = 0,
		.arg = 0,
		.probe = wiimod_led_probe,
		.remove = wiimod_led_remove,
	},
	{
		.flags = 0,
		.arg = 1,
		.probe = wiimod_led_probe,
		.remove = wiimod_led_remove,
	},
	{
		.flags = 0,
		.arg = 2,
		.probe = wiimod_led_probe,
		.remove = wiimod_led_remove,
	},
	{
		.flags = 0,
		.arg = 3,
		.probe = wiimod_led_probe,
		.remove = wiimod_led_remove,
	},
};

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/*
 * Accelerometer
 * 3 axis accelerometer data is part of nearly all DRMs. If not supported by a
 * device, it's mostly cleared to 0. This module parses this data and provides
 * it via a separate input device.
 */

static void wiimod_accel_in_accel(struct wiimote_data *wdata,
				  const __u8 *accel)
{
	__u16 x, y, z;

	if (!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
		return;

	/*
	 * payload is: BB BB XX YY ZZ
	 * Accelerometer data is encoded into 3 10bit values. XX, YY and ZZ
	 * contain the upper 8 bits of each value. The lower 2 bits are
	 * contained in the buttons data BB BB.
	 * Bits 6 and 7 of the first buttons byte BB is the lower 2 bits of the
	 * X accel value. Bit 5 of the second buttons byte is the 2nd bit of Y
	 * accel value and bit 6 is the second bit of the Z value.
	 * The first bit of Y and Z values is not available and always set to 0.
	 * 0x200 is returned on no movement.
	 */

	x = accel[2] << 2;
	y = accel[3] << 2;
	z = accel[4] << 2;

	x |= (accel[0] >> 5) & 0x3;
	y |= (accel[1] >> 4) & 0x2;
	z |= (accel[1] >> 5) & 0x2;

	input_report_abs(wdata->accel, ABS_RX, x - 0x200);
	input_report_abs(wdata->accel, ABS_RY, y - 0x200);
	input_report_abs(wdata->accel, ABS_RZ, z - 0x200);
	input_sync(wdata->accel);
}

static int wiimod_accel_open(struct input_dev *dev)
{
	struct wiimote_data *wdata = input_get_drvdata(dev);
	unsigned long flags;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wiiproto_req_accel(wdata, true);
	spin_unlock_irqrestore(&wdata->state.lock, flags);

	return 0;
}

static void wiimod_accel_close(struct input_dev *dev)
{
	struct wiimote_data *wdata = input_get_drvdata(dev);
	unsigned long flags;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wiiproto_req_accel(wdata, false);
	spin_unlock_irqrestore(&wdata->state.lock, flags);
}

static int wiimod_accel_probe(const struct wiimod_ops *ops,
			      struct wiimote_data *wdata)
{
	int ret;

	wdata->accel = input_allocate_device();
	if (!wdata->accel)
		return -ENOMEM;

	input_set_drvdata(wdata->accel, wdata);
	wdata->accel->open = wiimod_accel_open;
	wdata->accel->close = wiimod_accel_close;
	wdata->accel->dev.parent = &wdata->hdev->dev;
	wdata->accel->id.bustype = wdata->hdev->bus;
	wdata->accel->id.vendor = wdata->hdev->vendor;
	wdata->accel->id.product = wdata->hdev->product;
	wdata->accel->id.version = wdata->hdev->version;
	wdata->accel->name = WIIMOTE_NAME " Accelerometer";

	set_bit(EV_ABS, wdata->accel->evbit);
	set_bit(ABS_RX, wdata->accel->absbit);
	set_bit(ABS_RY, wdata->accel->absbit);
	set_bit(ABS_RZ, wdata->accel->absbit);
	input_set_abs_params(wdata->accel, ABS_RX, -500, 500, 2, 4);
	input_set_abs_params(wdata->accel, ABS_RY, -500, 500, 2, 4);
	input_set_abs_params(wdata->accel, ABS_RZ, -500, 500, 2, 4);

	ret = input_register_device(wdata->accel);
	if (ret) {
		hid_err(wdata->hdev, "cannot register input device\n");
		goto err_free;
	}

	return 0;

err_free:
	input_free_device(wdata->accel);
	wdata->accel = NULL;
	return ret;
}

static void wiimod_accel_remove(const struct wiimod_ops *ops,
				struct wiimote_data *wdata)
{
	if (!wdata->accel)
		return;

	input_unregister_device(wdata->accel);
	wdata->accel = NULL;
}

static const struct wiimod_ops wiimod_accel = {
	.flags = 0,
	.arg = 0,
	.probe = wiimod_accel_probe,
	.remove = wiimod_accel_remove,
	.in_accel = wiimod_accel_in_accel,
};

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/*
 * IR Cam
 * Up to 4 IR sources can be tracked by a normal Wii Remote. The IR cam needs
 * to be initialized with a fairly complex procedure and consumes a lot of
 * power. Therefore, as long as no application uses the IR input device, it is
 * kept offline.
 * Nearly no other device than the normal Wii Remotes supports the IR cam so
 * you can disable this module for these devices.
 */

static void wiimod_ir_in_ir(struct wiimote_data *wdata, const __u8 *ir,
			    bool packed, unsigned int id)
{
	__u16 x, y;
	__u8 xid, yid;
	bool sync = false;

	if (!(wdata->state.flags & WIIPROTO_FLAGS_IR))
		return;

	switch (id) {
	case 0:
		xid = ABS_HAT0X;
		yid = ABS_HAT0Y;
		break;
	case 1:
		xid = ABS_HAT1X;
		yid = ABS_HAT1Y;
		break;
	case 2:
		xid = ABS_HAT2X;
		yid = ABS_HAT2Y;
		break;
	case 3:
		xid = ABS_HAT3X;
		yid = ABS_HAT3Y;
		sync = true;
		break;
	default:
		return;
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	}
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	/*
	 * Basic IR data is encoded into 3 bytes. The first two bytes are the
	 * lower 8 bit of the X/Y data, the 3rd byte contains the upper 2 bits
	 * of both.
	 * If data is packed, then the 3rd byte is put first and slightly
	 * reordered. This allows to interleave packed and non-packed data to
	 * have two IR sets in 5 bytes instead of 6.
	 * The resulting 10bit X/Y values are passed to the ABS_HAT? input dev.
	 */

	if (packed) {
		x = ir[1] | ((ir[0] & 0x03) << 8);
		y = ir[2] | ((ir[0] & 0x0c) << 6);
	} else {
		x = ir[0] | ((ir[2] & 0x30) << 4);
		y = ir[1] | ((ir[2] & 0xc0) << 2);
	}

	input_report_abs(wdata->ir, xid, x);
	input_report_abs(wdata->ir, yid, y);

	if (sync)
		input_sync(wdata->ir);
}

static int wiimod_ir_change(struct wiimote_data *wdata, __u16 mode)
{
	int ret;
	unsigned long flags;
	__u8 format = 0;
	static const __u8 data_enable[] = { 0x01 };
	static const __u8 data_sens1[] = { 0x02, 0x00, 0x00, 0x71, 0x01,
						0x00, 0xaa, 0x00, 0x64 };
	static const __u8 data_sens2[] = { 0x63, 0x03 };
	static const __u8 data_fin[] = { 0x08 };

	spin_lock_irqsave(&wdata->state.lock, flags);

	if (mode == (wdata->state.flags & WIIPROTO_FLAGS_IR)) {
		spin_unlock_irqrestore(&wdata->state.lock, flags);
		return 0;
	}

	if (mode == 0) {
		wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
		wiiproto_req_ir1(wdata, 0);
		wiiproto_req_ir2(wdata, 0);
		wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
		spin_unlock_irqrestore(&wdata->state.lock, flags);
		return 0;
	}

	spin_unlock_irqrestore(&wdata->state.lock, flags);

	ret = wiimote_cmd_acquire(wdata);
	if (ret)
		return ret;

	/* send PIXEL CLOCK ENABLE cmd first */
	spin_lock_irqsave(&wdata->state.lock, flags);
	wiimote_cmd_set(wdata, WIIPROTO_REQ_IR1, 0);
	wiiproto_req_ir1(wdata, 0x06);
	spin_unlock_irqrestore(&wdata->state.lock, flags);

	ret = wiimote_cmd_wait(wdata);
	if (ret)
		goto unlock;
	if (wdata->state.cmd_err) {
		ret = -EIO;
		goto unlock;
	}

	/* enable IR LOGIC */
	spin_lock_irqsave(&wdata->state.lock, flags);
	wiimote_cmd_set(wdata, WIIPROTO_REQ_IR2, 0);
	wiiproto_req_ir2(wdata, 0x06);
	spin_unlock_irqrestore(&wdata->state.lock, flags);

	ret = wiimote_cmd_wait(wdata);
	if (ret)
		goto unlock;
	if (wdata->state.cmd_err) {
		ret = -EIO;
		goto unlock;
	}

	/* enable IR cam but do not make it send data, yet */
	ret = wiimote_cmd_write(wdata, 0xb00030, data_enable,
							sizeof(data_enable));
	if (ret)
		goto unlock;

	/* write first sensitivity block */
	ret = wiimote_cmd_write(wdata, 0xb00000, data_sens1,
							sizeof(data_sens1));
	if (ret)
		goto unlock;

	/* write second sensitivity block */
	ret = wiimote_cmd_write(wdata, 0xb0001a, data_sens2,
							sizeof(data_sens2));
	if (ret)
		goto unlock;

	/* put IR cam into desired state */
	switch (mode) {
		case WIIPROTO_FLAG_IR_FULL:
			format = 5;
			break;
		case WIIPROTO_FLAG_IR_EXT:
			format = 3;
			break;
		case WIIPROTO_FLAG_IR_BASIC:
			format = 1;
			break;
	}
	ret = wiimote_cmd_write(wdata, 0xb00033, &format, sizeof(format));
	if (ret)
		goto unlock;

	/* make IR cam send data */
	ret = wiimote_cmd_write(wdata, 0xb00030, data_fin, sizeof(data_fin));
	if (ret)
		goto unlock;

	/* request new DRM mode compatible to IR mode */
	spin_lock_irqsave(&wdata->state.lock, flags);
	wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
	wdata->state.flags |= mode & WIIPROTO_FLAGS_IR;
	wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
	spin_unlock_irqrestore(&wdata->state.lock, flags);

unlock:
	wiimote_cmd_release(wdata);
	return ret;
}

static int wiimod_ir_open(struct input_dev *dev)
{
	struct wiimote_data *wdata = input_get_drvdata(dev);

	return wiimod_ir_change(wdata, WIIPROTO_FLAG_IR_BASIC);
}

static void wiimod_ir_close(struct input_dev *dev)
{
	struct wiimote_data *wdata = input_get_drvdata(dev);

	wiimod_ir_change(wdata, 0);
}

static int wiimod_ir_probe(const struct wiimod_ops *ops,
			   struct wiimote_data *wdata)
{
	int ret;

	wdata->ir = input_allocate_device();
	if (!wdata->ir)
		return -ENOMEM;

	input_set_drvdata(wdata->ir, wdata);
	wdata->ir->open = wiimod_ir_open;
	wdata->ir->close = wiimod_ir_close;
	wdata->ir->dev.parent = &wdata->hdev->dev;
	wdata->ir->id.bustype = wdata->hdev->bus;
	wdata->ir->id.vendor = wdata->hdev->vendor;
	wdata->ir->id.product = wdata->hdev->product;
	wdata->ir->id.version = wdata->hdev->version;
	wdata->ir->name = WIIMOTE_NAME " IR";

	set_bit(EV_ABS, wdata->ir->evbit);
	set_bit(ABS_HAT0X, wdata->ir->absbit);
	set_bit(ABS_HAT0Y, wdata->ir->absbit);
	set_bit(ABS_HAT1X, wdata->ir->absbit);
	set_bit(ABS_HAT1Y, wdata->ir->absbit);
	set_bit(ABS_HAT2X, wdata->ir->absbit);
	set_bit(ABS_HAT2Y, wdata->ir->absbit);
	set_bit(ABS_HAT3X, wdata->ir->absbit);
	set_bit(ABS_HAT3Y, wdata->ir->absbit);
	input_set_abs_params(wdata->ir, ABS_HAT0X, 0, 1023, 2, 4);
	input_set_abs_params(wdata->ir, ABS_HAT0Y, 0, 767, 2, 4);
	input_set_abs_params(wdata->ir, ABS_HAT1X, 0, 1023, 2, 4);
	input_set_abs_params(wdata->ir, ABS_HAT1Y, 0, 767, 2, 4);
	input_set_abs_params(wdata->ir, ABS_HAT2X, 0, 1023, 2, 4);
	input_set_abs_params(wdata->ir, ABS_HAT2Y, 0, 767, 2, 4);
	input_set_abs_params(wdata->ir, ABS_HAT3X, 0, 1023, 2, 4);
	input_set_abs_params(wdata->ir, ABS_HAT3Y, 0, 767, 2, 4);

	ret = input_register_device(wdata->ir);
	if (ret) {
		hid_err(wdata->hdev, "cannot register input device\n");
		goto err_free;
	}

	return 0;

err_free:
	input_free_device(wdata->ir);
	wdata->ir = NULL;
	return ret;
}

static void wiimod_ir_remove(const struct wiimod_ops *ops,
			     struct wiimote_data *wdata)
{
	if (!wdata->ir)
		return;

	input_unregister_device(wdata->ir);
	wdata->ir = NULL;
}

static const struct wiimod_ops wiimod_ir = {
	.flags = 0,
	.arg = 0,
	.probe = wiimod_ir_probe,
	.remove = wiimod_ir_remove,
	.in_ir = wiimod_ir_in_ir,
};

805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001
/*
 * Nunchuk Extension
 * The Nintendo Wii Nunchuk was the first official extension published by
 * Nintendo. It provides two additional keys and a separate accelerometer. It
 * can be hotplugged to standard Wii Remotes.
 */

enum wiimod_nunchuk_keys {
	WIIMOD_NUNCHUK_KEY_C,
	WIIMOD_NUNCHUK_KEY_Z,
	WIIMOD_NUNCHUK_KEY_NUM,
};

static const __u16 wiimod_nunchuk_map[] = {
	BTN_C,		/* WIIMOD_NUNCHUK_KEY_C */
	BTN_Z,		/* WIIMOD_NUNCHUK_KEY_Z */
};

static void wiimod_nunchuk_in_ext(struct wiimote_data *wdata, const __u8 *ext)
{
	__s16 x, y, z, bx, by;

	/*   Byte |   8    7 |  6    5 |  4    3 |  2 |  1  |
	 *   -----+----------+---------+---------+----+-----+
	 *    1   |              Button X <7:0>             |
	 *    2   |              Button Y <7:0>             |
	 *   -----+----------+---------+---------+----+-----+
	 *    3   |               Speed X <9:2>             |
	 *    4   |               Speed Y <9:2>             |
	 *    5   |               Speed Z <9:2>             |
	 *   -----+----------+---------+---------+----+-----+
	 *    6   | Z <1:0>  | Y <1:0> | X <1:0> | BC | BZ  |
	 *   -----+----------+---------+---------+----+-----+
	 * Button X/Y is the analog stick. Speed X, Y and Z are the
	 * accelerometer data in the same format as the wiimote's accelerometer.
	 * The 6th byte contains the LSBs of the accelerometer data.
	 * BC and BZ are the C and Z buttons: 0 means pressed
	 *
	 * If reported interleaved with motionp, then the layout changes. The
	 * 5th and 6th byte changes to:
	 *   -----+-----------------------------------+-----+
	 *    5   |            Speed Z <9:3>          | EXT |
	 *   -----+--------+-----+-----+----+----+----+-----+
	 *    6   |Z <2:1> |Y <1>|X <1>| BC | BZ | 0  |  0  |
	 *   -----+--------+-----+-----+----+----+----+-----+
	 * All three accelerometer values lose their LSB. The other data is
	 * still available but slightly moved.
	 *
	 * Center data for button values is 128. Center value for accelerometer
	 * values it 512 / 0x200
	 */

	bx = ext[0];
	by = ext[1];
	bx -= 128;
	by -= 128;

	x = ext[2] << 2;
	y = ext[3] << 2;
	z = ext[4] << 2;

	if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
		x |= (ext[5] >> 3) & 0x02;
		y |= (ext[5] >> 4) & 0x02;
		z &= ~0x4;
		z |= (ext[5] >> 5) & 0x06;
	} else {
		x |= (ext[5] >> 2) & 0x03;
		y |= (ext[5] >> 4) & 0x03;
		z |= (ext[5] >> 6) & 0x03;
	}

	x -= 0x200;
	y -= 0x200;
	z -= 0x200;

	input_report_abs(wdata->extension.input, ABS_HAT0X, bx);
	input_report_abs(wdata->extension.input, ABS_HAT0Y, by);

	input_report_abs(wdata->extension.input, ABS_RX, x);
	input_report_abs(wdata->extension.input, ABS_RY, y);
	input_report_abs(wdata->extension.input, ABS_RZ, z);

	if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
		input_report_key(wdata->extension.input,
			wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_Z],
			!(ext[5] & 0x04));
		input_report_key(wdata->extension.input,
			wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_C],
			!(ext[5] & 0x08));
	} else {
		input_report_key(wdata->extension.input,
			wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_Z],
			!(ext[5] & 0x01));
		input_report_key(wdata->extension.input,
			wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_C],
			!(ext[5] & 0x02));
	}

	input_sync(wdata->extension.input);
}

static int wiimod_nunchuk_open(struct input_dev *dev)
{
	struct wiimote_data *wdata = input_get_drvdata(dev);
	unsigned long flags;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
	wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
	spin_unlock_irqrestore(&wdata->state.lock, flags);

	return 0;
}

static void wiimod_nunchuk_close(struct input_dev *dev)
{
	struct wiimote_data *wdata = input_get_drvdata(dev);
	unsigned long flags;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
	wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
	spin_unlock_irqrestore(&wdata->state.lock, flags);
}

static int wiimod_nunchuk_probe(const struct wiimod_ops *ops,
				struct wiimote_data *wdata)
{
	int ret, i;

	wdata->extension.input = input_allocate_device();
	if (!wdata->extension.input)
		return -ENOMEM;

	input_set_drvdata(wdata->extension.input, wdata);
	wdata->extension.input->open = wiimod_nunchuk_open;
	wdata->extension.input->close = wiimod_nunchuk_close;
	wdata->extension.input->dev.parent = &wdata->hdev->dev;
	wdata->extension.input->id.bustype = wdata->hdev->bus;
	wdata->extension.input->id.vendor = wdata->hdev->vendor;
	wdata->extension.input->id.product = wdata->hdev->product;
	wdata->extension.input->id.version = wdata->hdev->version;
	wdata->extension.input->name = WIIMOTE_NAME " Nunchuk";

	set_bit(EV_KEY, wdata->extension.input->evbit);
	for (i = 0; i < WIIMOD_NUNCHUK_KEY_NUM; ++i)
		set_bit(wiimod_nunchuk_map[i],
			wdata->extension.input->keybit);

	set_bit(EV_ABS, wdata->extension.input->evbit);
	set_bit(ABS_HAT0X, wdata->extension.input->absbit);
	set_bit(ABS_HAT0Y, wdata->extension.input->absbit);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT0X, -120, 120, 2, 4);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT0Y, -120, 120, 2, 4);
	set_bit(ABS_RX, wdata->extension.input->absbit);
	set_bit(ABS_RY, wdata->extension.input->absbit);
	set_bit(ABS_RZ, wdata->extension.input->absbit);
	input_set_abs_params(wdata->extension.input,
			     ABS_RX, -500, 500, 2, 4);
	input_set_abs_params(wdata->extension.input,
			     ABS_RY, -500, 500, 2, 4);
	input_set_abs_params(wdata->extension.input,
			     ABS_RZ, -500, 500, 2, 4);

	ret = input_register_device(wdata->extension.input);
	if (ret)
		goto err_free;

	return 0;

err_free:
	input_free_device(wdata->extension.input);
	wdata->extension.input = NULL;
	return ret;
}

static void wiimod_nunchuk_remove(const struct wiimod_ops *ops,
				  struct wiimote_data *wdata)
{
	if (!wdata->extension.input)
		return;

	input_unregister_device(wdata->extension.input);
	wdata->extension.input = NULL;
}

static const struct wiimod_ops wiimod_nunchuk = {
	.flags = 0,
	.arg = 0,
	.probe = wiimod_nunchuk_probe,
	.remove = wiimod_nunchuk_remove,
	.in_ext = wiimod_nunchuk_in_ext,
};

1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078
/*
 * Classic Controller
 * Another official extension from Nintendo. It provides a classic
 * gamecube-like controller that can be hotplugged on the Wii Remote.
 * It has several hardware buttons and switches that are all reported via
 * a normal extension device.
 */

enum wiimod_classic_keys {
	WIIMOD_CLASSIC_KEY_A,
	WIIMOD_CLASSIC_KEY_B,
	WIIMOD_CLASSIC_KEY_X,
	WIIMOD_CLASSIC_KEY_Y,
	WIIMOD_CLASSIC_KEY_ZL,
	WIIMOD_CLASSIC_KEY_ZR,
	WIIMOD_CLASSIC_KEY_PLUS,
	WIIMOD_CLASSIC_KEY_MINUS,
	WIIMOD_CLASSIC_KEY_HOME,
	WIIMOD_CLASSIC_KEY_LEFT,
	WIIMOD_CLASSIC_KEY_RIGHT,
	WIIMOD_CLASSIC_KEY_UP,
	WIIMOD_CLASSIC_KEY_DOWN,
	WIIMOD_CLASSIC_KEY_LT,
	WIIMOD_CLASSIC_KEY_RT,
	WIIMOD_CLASSIC_KEY_NUM,
};

static const __u16 wiimod_classic_map[] = {
	BTN_A,		/* WIIMOD_CLASSIC_KEY_A */
	BTN_B,		/* WIIMOD_CLASSIC_KEY_B */
	BTN_X,		/* WIIMOD_CLASSIC_KEY_X */
	BTN_Y,		/* WIIMOD_CLASSIC_KEY_Y */
	BTN_TL2,	/* WIIMOD_CLASSIC_KEY_ZL */
	BTN_TR2,	/* WIIMOD_CLASSIC_KEY_ZR */
	KEY_NEXT,	/* WIIMOD_CLASSIC_KEY_PLUS */
	KEY_PREVIOUS,	/* WIIMOD_CLASSIC_KEY_MINUS */
	BTN_MODE,	/* WIIMOD_CLASSIC_KEY_HOME */
	KEY_LEFT,	/* WIIMOD_CLASSIC_KEY_LEFT */
	KEY_RIGHT,	/* WIIMOD_CLASSIC_KEY_RIGHT */
	KEY_UP,		/* WIIMOD_CLASSIC_KEY_UP */
	KEY_DOWN,	/* WIIMOD_CLASSIC_KEY_DOWN */
	BTN_TL,		/* WIIMOD_CLASSIC_KEY_LT */
	BTN_TR,		/* WIIMOD_CLASSIC_KEY_RT */
};

static void wiimod_classic_in_ext(struct wiimote_data *wdata, const __u8 *ext)
{
	__s8 rx, ry, lx, ly, lt, rt;

	/*   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    1   | RX <5:4>  |              LX <5:0>             |
	 *    2   | RX <3:2>  |              LY <5:0>             |
	 *   -----+-----+-----+-----+-----------------------------+
	 *    3   |RX<1>| LT <5:4>  |         RY <5:1>            |
	 *   -----+-----+-----------+-----------------------------+
	 *    4   |     LT <3:1>    |         RT <5:1>            |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    5   | BDR | BDD | BLT | B-  | BH  | B+  | BRT |  1  |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    6   | BZL | BB  | BY  | BA  | BX  | BZR | BDL | BDU |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 * All buttons are 0 if pressed
	 * RX and RY are right analog stick
	 * LX and LY are left analog stick
	 * LT is left trigger, RT is right trigger
	 * BLT is 0 if left trigger is fully pressed
	 * BRT is 0 if right trigger is fully pressed
	 * BDR, BDD, BDL, BDU form the D-Pad with right, down, left, up buttons
	 * BZL is left Z button and BZR is right Z button
	 * B-, BH, B+ are +, HOME and - buttons
	 * BB, BY, BA, BX are A, B, X, Y buttons
	 * LSB of RX, RY, LT, and RT are not transmitted and always 0.
	 *
	 * With motionp enabled it changes slightly to this:
	 *   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1079 1080
	 *    1   | RX <5:4>  |          LX <5:1>           | BDU |
	 *    2   | RX <3:2>  |          LY <5:1>           | BDL |
1081
	 *   -----+-----+-----+-----+-----------------------+-----+
1082
	 *    3   |RX<1>| LT <5:4>  |         RY <5:1>            |
1083
	 *   -----+-----+-----------+-----------------------------+
1084
	 *    4   |     LT <3:1>    |         RT <5:1>            |
1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    5   | BDR | BDD | BLT | B-  | BH  | B+  | BRT | EXT |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    6   | BZL | BB  | BY  | BA  | BX  | BZR |  0  |  0  |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 * Only the LSBs of LX and LY are lost. BDU and BDL are moved, the rest
	 * is the same as before.
	 */

	if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
		lx = ext[0] & 0x3e;
1096
		ly = ext[1] & 0x3e;
1097 1098
	} else {
		lx = ext[0] & 0x3f;
1099
		ly = ext[1] & 0x3f;
1100 1101
	}

1102
	rx = (ext[0] >> 3) & 0x18;
1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119
	rx |= (ext[1] >> 5) & 0x06;
	rx |= (ext[2] >> 7) & 0x01;
	ry = ext[2] & 0x1f;

	rt = ext[3] & 0x1f;
	lt = (ext[2] >> 2) & 0x18;
	lt |= (ext[3] >> 5) & 0x07;

	rx <<= 1;
	ry <<= 1;
	rt <<= 1;
	lt <<= 1;

	input_report_abs(wdata->extension.input, ABS_HAT1X, lx - 0x20);
	input_report_abs(wdata->extension.input, ABS_HAT1Y, ly - 0x20);
	input_report_abs(wdata->extension.input, ABS_HAT2X, rx - 0x20);
	input_report_abs(wdata->extension.input, ABS_HAT2Y, ry - 0x20);
1120 1121
	input_report_abs(wdata->extension.input, ABS_HAT3X, rt);
	input_report_abs(wdata->extension.input, ABS_HAT3Y, lt);
1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279

	input_report_key(wdata->extension.input,
			 wiimod_classic_map[WIIMOD_CLASSIC_KEY_RIGHT],
			 !(ext[4] & 0x80));
	input_report_key(wdata->extension.input,
			 wiimod_classic_map[WIIMOD_CLASSIC_KEY_DOWN],
			 !(ext[4] & 0x40));
	input_report_key(wdata->extension.input,
			 wiimod_classic_map[WIIMOD_CLASSIC_KEY_LT],
			 !(ext[4] & 0x20));
	input_report_key(wdata->extension.input,
			 wiimod_classic_map[WIIMOD_CLASSIC_KEY_MINUS],
			 !(ext[4] & 0x10));
	input_report_key(wdata->extension.input,
			 wiimod_classic_map[WIIMOD_CLASSIC_KEY_HOME],
			 !(ext[4] & 0x08));
	input_report_key(wdata->extension.input,
			 wiimod_classic_map[WIIMOD_CLASSIC_KEY_PLUS],
			 !(ext[4] & 0x04));
	input_report_key(wdata->extension.input,
			 wiimod_classic_map[WIIMOD_CLASSIC_KEY_RT],
			 !(ext[4] & 0x02));
	input_report_key(wdata->extension.input,
			 wiimod_classic_map[WIIMOD_CLASSIC_KEY_ZL],
			 !(ext[5] & 0x80));
	input_report_key(wdata->extension.input,
			 wiimod_classic_map[WIIMOD_CLASSIC_KEY_B],
			 !(ext[5] & 0x40));
	input_report_key(wdata->extension.input,
			 wiimod_classic_map[WIIMOD_CLASSIC_KEY_Y],
			 !(ext[5] & 0x20));
	input_report_key(wdata->extension.input,
			 wiimod_classic_map[WIIMOD_CLASSIC_KEY_A],
			 !(ext[5] & 0x10));
	input_report_key(wdata->extension.input,
			 wiimod_classic_map[WIIMOD_CLASSIC_KEY_X],
			 !(ext[5] & 0x08));
	input_report_key(wdata->extension.input,
			 wiimod_classic_map[WIIMOD_CLASSIC_KEY_ZR],
			 !(ext[5] & 0x04));

	if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
		input_report_key(wdata->extension.input,
			 wiimod_classic_map[WIIMOD_CLASSIC_KEY_LEFT],
			 !(ext[1] & 0x01));
		input_report_key(wdata->extension.input,
			 wiimod_classic_map[WIIMOD_CLASSIC_KEY_UP],
			 !(ext[0] & 0x01));
	} else {
		input_report_key(wdata->extension.input,
			 wiimod_classic_map[WIIMOD_CLASSIC_KEY_LEFT],
			 !(ext[5] & 0x02));
		input_report_key(wdata->extension.input,
			 wiimod_classic_map[WIIMOD_CLASSIC_KEY_UP],
			 !(ext[5] & 0x01));
	}

	input_sync(wdata->extension.input);
}

static int wiimod_classic_open(struct input_dev *dev)
{
	struct wiimote_data *wdata = input_get_drvdata(dev);
	unsigned long flags;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
	wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
	spin_unlock_irqrestore(&wdata->state.lock, flags);

	return 0;
}

static void wiimod_classic_close(struct input_dev *dev)
{
	struct wiimote_data *wdata = input_get_drvdata(dev);
	unsigned long flags;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
	wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
	spin_unlock_irqrestore(&wdata->state.lock, flags);
}

static int wiimod_classic_probe(const struct wiimod_ops *ops,
				struct wiimote_data *wdata)
{
	int ret, i;

	wdata->extension.input = input_allocate_device();
	if (!wdata->extension.input)
		return -ENOMEM;

	input_set_drvdata(wdata->extension.input, wdata);
	wdata->extension.input->open = wiimod_classic_open;
	wdata->extension.input->close = wiimod_classic_close;
	wdata->extension.input->dev.parent = &wdata->hdev->dev;
	wdata->extension.input->id.bustype = wdata->hdev->bus;
	wdata->extension.input->id.vendor = wdata->hdev->vendor;
	wdata->extension.input->id.product = wdata->hdev->product;
	wdata->extension.input->id.version = wdata->hdev->version;
	wdata->extension.input->name = WIIMOTE_NAME " Classic Controller";

	set_bit(EV_KEY, wdata->extension.input->evbit);
	for (i = 0; i < WIIMOD_CLASSIC_KEY_NUM; ++i)
		set_bit(wiimod_classic_map[i],
			wdata->extension.input->keybit);

	set_bit(EV_ABS, wdata->extension.input->evbit);
	set_bit(ABS_HAT1X, wdata->extension.input->absbit);
	set_bit(ABS_HAT1Y, wdata->extension.input->absbit);
	set_bit(ABS_HAT2X, wdata->extension.input->absbit);
	set_bit(ABS_HAT2Y, wdata->extension.input->absbit);
	set_bit(ABS_HAT3X, wdata->extension.input->absbit);
	set_bit(ABS_HAT3Y, wdata->extension.input->absbit);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT1X, -30, 30, 1, 1);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT1Y, -30, 30, 1, 1);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT2X, -30, 30, 1, 1);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT2Y, -30, 30, 1, 1);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT3X, -30, 30, 1, 1);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT3Y, -30, 30, 1, 1);

	ret = input_register_device(wdata->extension.input);
	if (ret)
		goto err_free;

	return 0;

err_free:
	input_free_device(wdata->extension.input);
	wdata->extension.input = NULL;
	return ret;
}

static void wiimod_classic_remove(const struct wiimod_ops *ops,
				  struct wiimote_data *wdata)
{
	if (!wdata->extension.input)
		return;

	input_unregister_device(wdata->extension.input);
	wdata->extension.input = NULL;
}

static const struct wiimod_ops wiimod_classic = {
	.flags = 0,
	.arg = 0,
	.probe = wiimod_classic_probe,
	.remove = wiimod_classic_remove,
	.in_ext = wiimod_classic_in_ext,
};

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/*
 * Balance Board Extension
 * The Nintendo Wii Balance Board provides four hardware weight sensor plus a
 * single push button. No other peripherals are available. However, the
 * balance-board data is sent via a standard Wii Remote extension. All other
 * data for non-present hardware is zeroed out.
 * Some 3rd party devices react allergic if we try to access normal Wii Remote
 * hardware, so this extension module should be the only module that is loaded
 * on balance boards.
 * The balance board needs 8 bytes extension data instead of basic 6 bytes so
 * it needs the WIIMOD_FLAG_EXT8 flag.
 */

static void wiimod_bboard_in_keys(struct wiimote_data *wdata, const __u8 *keys)
{
	input_report_key(wdata->extension.input, BTN_A,
			 !!(keys[1] & 0x08));
	input_sync(wdata->extension.input);
}

static void wiimod_bboard_in_ext(struct wiimote_data *wdata,
				 const __u8 *ext)
{
	__s32 val[4], tmp, div;
	unsigned int i;
	struct wiimote_state *s = &wdata->state;

	/*
	 * Balance board data layout:
	 *
	 *   Byte |  8  7  6  5  4  3  2  1  |
	 *   -----+--------------------------+
	 *    1   |    Top Right <15:8>      |
	 *    2   |    Top Right  <7:0>      |
	 *   -----+--------------------------+
	 *    3   | Bottom Right <15:8>      |
	 *    4   | Bottom Right  <7:0>      |
	 *   -----+--------------------------+
	 *    5   |     Top Left <15:8>      |
	 *    6   |     Top Left  <7:0>      |
	 *   -----+--------------------------+
	 *    7   |  Bottom Left <15:8>      |
	 *    8   |  Bottom Left  <7:0>      |
	 *   -----+--------------------------+
	 *
	 * These values represent the weight-measurements of the Wii-balance
	 * board with 16bit precision.
	 *
	 * The balance-board is never reported interleaved with motionp.
	 */

	val[0] = ext[0];
	val[0] <<= 8;
	val[0] |= ext[1];

	val[1] = ext[2];
	val[1] <<= 8;
	val[1] |= ext[3];

	val[2] = ext[4];
	val[2] <<= 8;
	val[2] |= ext[5];

	val[3] = ext[6];
	val[3] <<= 8;
	val[3] |= ext[7];

	/* apply calibration data */
	for (i = 0; i < 4; i++) {
		if (val[i] <= s->calib_bboard[i][0]) {
			tmp = 0;
		} else if (val[i] < s->calib_bboard[i][1]) {
			tmp = val[i] - s->calib_bboard[i][0];
			tmp *= 1700;
			div = s->calib_bboard[i][1] - s->calib_bboard[i][0];
			tmp /= div ? div : 1;
		} else {
			tmp = val[i] - s->calib_bboard[i][1];
			tmp *= 1700;
			div = s->calib_bboard[i][2] - s->calib_bboard[i][1];
			tmp /= div ? div : 1;
			tmp += 1700;
		}
		val[i] = tmp;
	}

	input_report_abs(wdata->extension.input, ABS_HAT0X, val[0]);
	input_report_abs(wdata->extension.input, ABS_HAT0Y, val[1]);
	input_report_abs(wdata->extension.input, ABS_HAT1X, val[2]);
	input_report_abs(wdata->extension.input, ABS_HAT1Y, val[3]);
	input_sync(wdata->extension.input);
}

static int wiimod_bboard_open(struct input_dev *dev)
{
	struct wiimote_data *wdata = input_get_drvdata(dev);
	unsigned long flags;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
	wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
	spin_unlock_irqrestore(&wdata->state.lock, flags);

	return 0;
}

static void wiimod_bboard_close(struct input_dev *dev)
{
	struct wiimote_data *wdata = input_get_drvdata(dev);
	unsigned long flags;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
	wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
	spin_unlock_irqrestore(&wdata->state.lock, flags);
}

1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450
static ssize_t wiimod_bboard_calib_show(struct device *dev,
					struct device_attribute *attr,
					char *out)
{
	struct wiimote_data *wdata = dev_to_wii(dev);
	int i, j, ret;
	__u16 val;
	__u8 buf[24], offs;

	ret = wiimote_cmd_acquire(wdata);
	if (ret)
		return ret;

	ret = wiimote_cmd_read(wdata, 0xa40024, buf, 12);
	if (ret != 12) {
		wiimote_cmd_release(wdata);
		return ret < 0 ? ret : -EIO;
	}
	ret = wiimote_cmd_read(wdata, 0xa40024 + 12, buf + 12, 12);
	if (ret != 12) {
		wiimote_cmd_release(wdata);
		return ret < 0 ? ret : -EIO;
	}

	wiimote_cmd_release(wdata);

	spin_lock_irq(&wdata->state.lock);
	offs = 0;
	for (i = 0; i < 3; ++i) {
		for (j = 0; j < 4; ++j) {
			wdata->state.calib_bboard[j][i] = buf[offs];
			wdata->state.calib_bboard[j][i] <<= 8;
			wdata->state.calib_bboard[j][i] |= buf[offs + 1];
			offs += 2;
		}
	}
	spin_unlock_irq(&wdata->state.lock);

	ret = 0;
	for (i = 0; i < 3; ++i) {
		for (j = 0; j < 4; ++j) {
			val = wdata->state.calib_bboard[j][i];
			if (i == 2 && j == 3)
				ret += sprintf(&out[ret], "%04x\n", val);
			else
				ret += sprintf(&out[ret], "%04x:", val);
		}
	}

	return ret;
}

static DEVICE_ATTR(bboard_calib, S_IRUGO, wiimod_bboard_calib_show, NULL);

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static int wiimod_bboard_probe(const struct wiimod_ops *ops,
			       struct wiimote_data *wdata)
{
	int ret, i, j;
	__u8 buf[24], offs;

	wiimote_cmd_acquire_noint(wdata);

	ret = wiimote_cmd_read(wdata, 0xa40024, buf, 12);
	if (ret != 12) {
		wiimote_cmd_release(wdata);
		return ret < 0 ? ret : -EIO;
	}
	ret = wiimote_cmd_read(wdata, 0xa40024 + 12, buf + 12, 12);
	if (ret != 12) {
		wiimote_cmd_release(wdata);
		return ret < 0 ? ret : -EIO;
	}

	wiimote_cmd_release(wdata);

	offs = 0;
	for (i = 0; i < 3; ++i) {
		for (j = 0; j < 4; ++j) {
			wdata->state.calib_bboard[j][i] = buf[offs];
			wdata->state.calib_bboard[j][i] <<= 8;
			wdata->state.calib_bboard[j][i] |= buf[offs + 1];
			offs += 2;
		}
	}

	wdata->extension.input = input_allocate_device();
	if (!wdata->extension.input)
		return -ENOMEM;

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	ret = device_create_file(&wdata->hdev->dev,
				 &dev_attr_bboard_calib);
	if (ret) {
		hid_err(wdata->hdev, "cannot create sysfs attribute\n");
		goto err_free;
	}

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	input_set_drvdata(wdata->extension.input, wdata);
	wdata->extension.input->open = wiimod_bboard_open;
	wdata->extension.input->close = wiimod_bboard_close;
	wdata->extension.input->dev.parent = &wdata->hdev->dev;
	wdata->extension.input->id.bustype = wdata->hdev->bus;
	wdata->extension.input->id.vendor = wdata->hdev->vendor;
	wdata->extension.input->id.product = wdata->hdev->product;
	wdata->extension.input->id.version = wdata->hdev->version;
	wdata->extension.input->name = WIIMOTE_NAME " Balance Board";

	set_bit(EV_KEY, wdata->extension.input->evbit);
	set_bit(BTN_A, wdata->extension.input->keybit);

	set_bit(EV_ABS, wdata->extension.input->evbit);
	set_bit(ABS_HAT0X, wdata->extension.input->absbit);
	set_bit(ABS_HAT0Y, wdata->extension.input->absbit);
	set_bit(ABS_HAT1X, wdata->extension.input->absbit);
	set_bit(ABS_HAT1Y, wdata->extension.input->absbit);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT0X, 0, 65535, 2, 4);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT0Y, 0, 65535, 2, 4);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT1X, 0, 65535, 2, 4);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT1Y, 0, 65535, 2, 4);

	ret = input_register_device(wdata->extension.input);
	if (ret)
1522
		goto err_file;
1523 1524 1525

	return 0;

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err_file:
	device_remove_file(&wdata->hdev->dev,
			   &dev_attr_bboard_calib);
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err_free:
	input_free_device(wdata->extension.input);
	wdata->extension.input = NULL;
	return ret;
}

static void wiimod_bboard_remove(const struct wiimod_ops *ops,
				 struct wiimote_data *wdata)
{
	if (!wdata->extension.input)
		return;

	input_unregister_device(wdata->extension.input);
	wdata->extension.input = NULL;
1543 1544
	device_remove_file(&wdata->hdev->dev,
			   &dev_attr_bboard_calib);
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}

static const struct wiimod_ops wiimod_bboard = {
	.flags = WIIMOD_FLAG_EXT8,
	.arg = 0,
	.probe = wiimod_bboard_probe,
	.remove = wiimod_bboard_remove,
	.in_keys = wiimod_bboard_in_keys,
	.in_ext = wiimod_bboard_in_ext,
};

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/*
 * Pro Controller
 * Released with the Wii U was the Nintendo Wii U Pro Controller. It does not
 * work together with the classic Wii, but only with the new Wii U. However, it
 * uses the same protocol and provides a builtin "classic controller pro"
 * extension, few standard buttons, a rumble motor, 4 LEDs and a battery.
 * We provide all these via a standard extension device as the device doesn't
 * feature an extension port.
 */

enum wiimod_pro_keys {
	WIIMOD_PRO_KEY_A,
	WIIMOD_PRO_KEY_B,
	WIIMOD_PRO_KEY_X,
	WIIMOD_PRO_KEY_Y,
	WIIMOD_PRO_KEY_PLUS,
	WIIMOD_PRO_KEY_MINUS,
	WIIMOD_PRO_KEY_HOME,
	WIIMOD_PRO_KEY_LEFT,
	WIIMOD_PRO_KEY_RIGHT,
	WIIMOD_PRO_KEY_UP,
	WIIMOD_PRO_KEY_DOWN,
	WIIMOD_PRO_KEY_TL,
	WIIMOD_PRO_KEY_TR,
	WIIMOD_PRO_KEY_ZL,
	WIIMOD_PRO_KEY_ZR,
	WIIMOD_PRO_KEY_THUMBL,
	WIIMOD_PRO_KEY_THUMBR,
	WIIMOD_PRO_KEY_NUM,
};

static const __u16 wiimod_pro_map[] = {
	BTN_EAST,	/* WIIMOD_PRO_KEY_A */
	BTN_SOUTH,	/* WIIMOD_PRO_KEY_B */
	BTN_NORTH,	/* WIIMOD_PRO_KEY_X */
	BTN_WEST,	/* WIIMOD_PRO_KEY_Y */
	BTN_START,	/* WIIMOD_PRO_KEY_PLUS */
	BTN_SELECT,	/* WIIMOD_PRO_KEY_MINUS */
	BTN_MODE,	/* WIIMOD_PRO_KEY_HOME */
	BTN_DPAD_LEFT,	/* WIIMOD_PRO_KEY_LEFT */
	BTN_DPAD_RIGHT,	/* WIIMOD_PRO_KEY_RIGHT */
	BTN_DPAD_UP,	/* WIIMOD_PRO_KEY_UP */
	BTN_DPAD_DOWN,	/* WIIMOD_PRO_KEY_DOWN */
	BTN_TL,		/* WIIMOD_PRO_KEY_TL */
	BTN_TR,		/* WIIMOD_PRO_KEY_TR */
	BTN_TL2,	/* WIIMOD_PRO_KEY_ZL */
	BTN_TR2,	/* WIIMOD_PRO_KEY_ZR */
	BTN_THUMBL,	/* WIIMOD_PRO_KEY_THUMBL */
	BTN_THUMBR,	/* WIIMOD_PRO_KEY_THUMBR */
};

static void wiimod_pro_in_ext(struct wiimote_data *wdata, const __u8 *ext)
{
	__s16 rx, ry, lx, ly;

	/*   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    1   |                   LX <7:0>                    |
	 *   -----+-----------------------+-----------------------+
	 *    2   |  0     0     0     0  |       LX <11:8>       |
	 *   -----+-----------------------+-----------------------+
	 *    3   |                   RX <7:0>                    |
	 *   -----+-----------------------+-----------------------+
	 *    4   |  0     0     0     0  |       RX <11:8>       |
	 *   -----+-----------------------+-----------------------+
	 *    5   |                   LY <7:0>                    |
	 *   -----+-----------------------+-----------------------+
	 *    6   |  0     0     0     0  |       LY <11:8>       |
	 *   -----+-----------------------+-----------------------+
	 *    7   |                   RY <7:0>                    |
	 *   -----+-----------------------+-----------------------+
	 *    8   |  0     0     0     0  |       RY <11:8>       |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    9   | BDR | BDD | BLT | B-  | BH  | B+  | BRT |  1  |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *   10   | BZL | BB  | BY  | BA  | BX  | BZR | BDL | BDU |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *   11   |  1  |     BATTERY     | USB |CHARG|LTHUM|RTHUM|
	 *   -----+-----+-----------------+-----------+-----+-----+
	 * All buttons are low-active (0 if pressed)
	 * RX and RY are right analog stick
	 * LX and LY are left analog stick
	 * BLT is left trigger, BRT is right trigger.
	 * BDR, BDD, BDL, BDU form the D-Pad with right, down, left, up buttons
	 * BZL is left Z button and BZR is right Z button
	 * B-, BH, B+ are +, HOME and - buttons
	 * BB, BY, BA, BX are A, B, X, Y buttons
	 *
	 * Bits marked as 0/1 are unknown and never changed during tests.
	 *
	 * Not entirely verified:
	 *   CHARG: 1 if uncharging, 0 if charging
	 *   USB: 1 if not connected, 0 if connected
	 *   BATTERY: battery capacity from 000 (empty) to 100 (full)
	 */

	lx = (ext[0] & 0xff) | ((ext[1] & 0x0f) << 8);
	rx = (ext[2] & 0xff) | ((ext[3] & 0x0f) << 8);
	ly = (ext[4] & 0xff) | ((ext[5] & 0x0f) << 8);
	ry = (ext[6] & 0xff) | ((ext[7] & 0x0f) << 8);

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	/* zero-point offsets */
	lx -= 0x800;
	ly = 0x800 - ly;
	rx -= 0x800;
	ry = 0x800 - ry;

	/* Trivial automatic calibration. We don't know any calibration data
	 * in the EEPROM so we must use the first report to calibrate the
	 * null-position of the analog sticks. Users can retrigger calibration
	 * via sysfs, or set it explicitly. If data is off more than abs(500),
	 * we skip calibration as the sticks are likely to be moved already. */
	if (!(wdata->state.flags & WIIPROTO_FLAG_PRO_CALIB_DONE)) {
		wdata->state.flags |= WIIPROTO_FLAG_PRO_CALIB_DONE;
		if (abs(lx) < 500)
			wdata->state.calib_pro_sticks[0] = -lx;
		if (abs(ly) < 500)
			wdata->state.calib_pro_sticks[1] = -ly;
		if (abs(rx) < 500)
			wdata->state.calib_pro_sticks[2] = -rx;
		if (abs(ry) < 500)
			wdata->state.calib_pro_sticks[3] = -ry;
	}

	/* apply calibration data */
	lx += wdata->state.calib_pro_sticks[0];
	ly += wdata->state.calib_pro_sticks[1];
	rx += wdata->state.calib_pro_sticks[2];
	ry += wdata->state.calib_pro_sticks[3];

	input_report_abs(wdata->extension.input, ABS_X, lx);
	input_report_abs(wdata->extension.input, ABS_Y, ly);
	input_report_abs(wdata->extension.input, ABS_RX, rx);
	input_report_abs(wdata->extension.input, ABS_RY, ry);
1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788

	input_report_key(wdata->extension.input,
			 wiimod_pro_map[WIIMOD_PRO_KEY_RIGHT],
			 !(ext[8] & 0x80));
	input_report_key(wdata->extension.input,
			 wiimod_pro_map[WIIMOD_PRO_KEY_DOWN],
			 !(ext[8] & 0x40));
	input_report_key(wdata->extension.input,
			 wiimod_pro_map[WIIMOD_PRO_KEY_TL],
			 !(ext[8] & 0x20));
	input_report_key(wdata->extension.input,
			 wiimod_pro_map[WIIMOD_PRO_KEY_MINUS],
			 !(ext[8] & 0x10));
	input_report_key(wdata->extension.input,
			 wiimod_pro_map[WIIMOD_PRO_KEY_HOME],
			 !(ext[8] & 0x08));
	input_report_key(wdata->extension.input,
			 wiimod_pro_map[WIIMOD_PRO_KEY_PLUS],
			 !(ext[8] & 0x04));
	input_report_key(wdata->extension.input,
			 wiimod_pro_map[WIIMOD_PRO_KEY_TR],
			 !(ext[8] & 0x02));

	input_report_key(wdata->extension.input,
			 wiimod_pro_map[WIIMOD_PRO_KEY_ZL],
			 !(ext[9] & 0x80));
	input_report_key(wdata->extension.input,
			 wiimod_pro_map[WIIMOD_PRO_KEY_B],
			 !(ext[9] & 0x40));
	input_report_key(wdata->extension.input,
			 wiimod_pro_map[WIIMOD_PRO_KEY_Y],
			 !(ext[9] & 0x20));
	input_report_key(wdata->extension.input,
			 wiimod_pro_map[WIIMOD_PRO_KEY_A],
			 !(ext[9] & 0x10));
	input_report_key(wdata->extension.input,
			 wiimod_pro_map[WIIMOD_PRO_KEY_X],
			 !(ext[9] & 0x08));
	input_report_key(wdata->extension.input,
			 wiimod_pro_map[WIIMOD_PRO_KEY_ZR],
			 !(ext[9] & 0x04));
	input_report_key(wdata->extension.input,
			 wiimod_pro_map[WIIMOD_PRO_KEY_LEFT],
			 !(ext[9] & 0x02));
	input_report_key(wdata->extension.input,
			 wiimod_pro_map[WIIMOD_PRO_KEY_UP],
			 !(ext[9] & 0x01));

	input_report_key(wdata->extension.input,
			 wiimod_pro_map[WIIMOD_PRO_KEY_THUMBL],
			 !(ext[10] & 0x02));
	input_report_key(wdata->extension.input,
			 wiimod_pro_map[WIIMOD_PRO_KEY_THUMBR],
			 !(ext[10] & 0x01));

	input_sync(wdata->extension.input);
}

static int wiimod_pro_open(struct input_dev *dev)
{
	struct wiimote_data *wdata = input_get_drvdata(dev);
	unsigned long flags;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
	wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
	spin_unlock_irqrestore(&wdata->state.lock, flags);

	return 0;
}

static void wiimod_pro_close(struct input_dev *dev)
{
	struct wiimote_data *wdata = input_get_drvdata(dev);
	unsigned long flags;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
	wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
	spin_unlock_irqrestore(&wdata->state.lock, flags);
}

static int wiimod_pro_play(struct input_dev *dev, void *data,
			   struct ff_effect *eff)
{
	struct wiimote_data *wdata = input_get_drvdata(dev);
	__u8 value;

	/*
	 * The wiimote supports only a single rumble motor so if any magnitude
	 * is set to non-zero then we start the rumble motor. If both are set to
	 * zero, we stop the rumble motor.
	 */

	if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude)
		value = 1;
	else
		value = 0;

1789 1790 1791 1792
	/* Locking state.lock here might deadlock with input_event() calls.
	 * schedule_work acts as barrier. Merging multiple changes is fine. */
	wdata->state.cache_rumble = value;
	schedule_work(&wdata->rumble_worker);
1793 1794 1795 1796

	return 0;
}

1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845
static ssize_t wiimod_pro_calib_show(struct device *dev,
				     struct device_attribute *attr,
				     char *out)
{
	struct wiimote_data *wdata = dev_to_wii(dev);
	int r;

	r = 0;
	r += sprintf(&out[r], "%+06hd:", wdata->state.calib_pro_sticks[0]);
	r += sprintf(&out[r], "%+06hd ", wdata->state.calib_pro_sticks[1]);
	r += sprintf(&out[r], "%+06hd:", wdata->state.calib_pro_sticks[2]);
	r += sprintf(&out[r], "%+06hd\n", wdata->state.calib_pro_sticks[3]);

	return r;
}

static ssize_t wiimod_pro_calib_store(struct device *dev,
				      struct device_attribute *attr,
				      const char *buf, size_t count)
{
	struct wiimote_data *wdata = dev_to_wii(dev);
	int r;
	s16 x1, y1, x2, y2;

	if (!strncmp(buf, "scan\n", 5)) {
		spin_lock_irq(&wdata->state.lock);
		wdata->state.flags &= ~WIIPROTO_FLAG_PRO_CALIB_DONE;
		spin_unlock_irq(&wdata->state.lock);
	} else {
		r = sscanf(buf, "%hd:%hd %hd:%hd", &x1, &y1, &x2, &y2);
		if (r != 4)
			return -EINVAL;

		spin_lock_irq(&wdata->state.lock);
		wdata->state.flags |= WIIPROTO_FLAG_PRO_CALIB_DONE;
		spin_unlock_irq(&wdata->state.lock);

		wdata->state.calib_pro_sticks[0] = x1;
		wdata->state.calib_pro_sticks[1] = y1;
		wdata->state.calib_pro_sticks[2] = x2;
		wdata->state.calib_pro_sticks[3] = y2;
	}

	return strnlen(buf, PAGE_SIZE);
}

static DEVICE_ATTR(pro_calib, S_IRUGO|S_IWUSR|S_IWGRP, wiimod_pro_calib_show,
		   wiimod_pro_calib_store);

1846 1847 1848 1849
static int wiimod_pro_probe(const struct wiimod_ops *ops,
			    struct wiimote_data *wdata)
{
	int ret, i;
1850
	unsigned long flags;
1851

1852
	INIT_WORK(&wdata->rumble_worker, wiimod_rumble_worker);
1853 1854 1855 1856 1857 1858 1859 1860
	wdata->state.calib_pro_sticks[0] = 0;
	wdata->state.calib_pro_sticks[1] = 0;
	wdata->state.calib_pro_sticks[2] = 0;
	wdata->state.calib_pro_sticks[3] = 0;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wdata->state.flags &= ~WIIPROTO_FLAG_PRO_CALIB_DONE;
	spin_unlock_irqrestore(&wdata->state.lock, flags);
1861

1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874
	wdata->extension.input = input_allocate_device();
	if (!wdata->extension.input)
		return -ENOMEM;

	set_bit(FF_RUMBLE, wdata->extension.input->ffbit);
	input_set_drvdata(wdata->extension.input, wdata);

	if (input_ff_create_memless(wdata->extension.input, NULL,
				    wiimod_pro_play)) {
		ret = -ENOMEM;
		goto err_free;
	}

1875 1876 1877 1878 1879 1880 1881
	ret = device_create_file(&wdata->hdev->dev,
				 &dev_attr_pro_calib);
	if (ret) {
		hid_err(wdata->hdev, "cannot create sysfs attribute\n");
		goto err_free;
	}

1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901
	wdata->extension.input->open = wiimod_pro_open;
	wdata->extension.input->close = wiimod_pro_close;
	wdata->extension.input->dev.parent = &wdata->hdev->dev;
	wdata->extension.input->id.bustype = wdata->hdev->bus;
	wdata->extension.input->id.vendor = wdata->hdev->vendor;
	wdata->extension.input->id.product = wdata->hdev->product;
	wdata->extension.input->id.version = wdata->hdev->version;
	wdata->extension.input->name = WIIMOTE_NAME " Pro Controller";

	set_bit(EV_KEY, wdata->extension.input->evbit);
	for (i = 0; i < WIIMOD_PRO_KEY_NUM; ++i)
		set_bit(wiimod_pro_map[i],
			wdata->extension.input->keybit);

	set_bit(EV_ABS, wdata->extension.input->evbit);
	set_bit(ABS_X, wdata->extension.input->absbit);
	set_bit(ABS_Y, wdata->extension.input->absbit);
	set_bit(ABS_RX, wdata->extension.input->absbit);
	set_bit(ABS_RY, wdata->extension.input->absbit);
	input_set_abs_params(wdata->extension.input,
1902
			     ABS_X, -0x400, 0x400, 4, 100);
1903
	input_set_abs_params(wdata->extension.input,
1904
			     ABS_Y, -0x400, 0x400, 4, 100);
1905
	input_set_abs_params(wdata->extension.input,
1906
			     ABS_RX, -0x400, 0x400, 4, 100);
1907
	input_set_abs_params(wdata->extension.input,
1908
			     ABS_RY, -0x400, 0x400, 4, 100);
1909 1910 1911

	ret = input_register_device(wdata->extension.input);
	if (ret)
1912
		goto err_file;
1913 1914 1915

	return 0;

1916 1917 1918
err_file:
	device_remove_file(&wdata->hdev->dev,
			   &dev_attr_pro_calib);
1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932
err_free:
	input_free_device(wdata->extension.input);
	wdata->extension.input = NULL;
	return ret;
}

static void wiimod_pro_remove(const struct wiimod_ops *ops,
			      struct wiimote_data *wdata)
{
	unsigned long flags;

	if (!wdata->extension.input)
		return;

1933 1934 1935
	input_unregister_device(wdata->extension.input);
	wdata->extension.input = NULL;
	cancel_work_sync(&wdata->rumble_worker);
1936 1937
	device_remove_file(&wdata->hdev->dev,
			   &dev_attr_pro_calib);
1938

1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951
	spin_lock_irqsave(&wdata->state.lock, flags);
	wiiproto_req_rumble(wdata, 0);
	spin_unlock_irqrestore(&wdata->state.lock, flags);
}

static const struct wiimod_ops wiimod_pro = {
	.flags = WIIMOD_FLAG_EXT16,
	.arg = 0,
	.probe = wiimod_pro_probe,
	.remove = wiimod_pro_remove,
	.in_ext = wiimod_pro_in_ext,
};

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/*
 * Drums
 * Guitar-Hero, Rock-Band and other games came bundled with drums which can
 * be plugged as extension to a Wiimote. Drum-reports are still not entirely
 * figured out, but the most important information is known.
 * We create a separate device for drums and report all information via this
 * input device.
 */

static inline void wiimod_drums_report_pressure(struct wiimote_data *wdata,
						__u8 none, __u8 which,
						__u8 pressure, __u8 onoff,
						__u8 *store, __u16 code,
						__u8 which_code)
{
	static const __u8 default_pressure = 3;

	if (!none && which == which_code) {
		*store = pressure;
		input_report_abs(wdata->extension.input, code, *store);
	} else if (onoff != !!*store) {
		*store = onoff ? default_pressure : 0;
		input_report_abs(wdata->extension.input, code, *store);
	}
}

static void wiimod_drums_in_ext(struct wiimote_data *wdata, const __u8 *ext)
{
	__u8 pressure, which, none, hhp, sx, sy;
	__u8 o, r, y, g, b, bass, bm, bp;

	/*   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    1   |  0  |  0  |              SX <5:0>             |
	 *    2   |  0  |  0  |              SY <5:0>             |
	 *   -----+-----+-----+-----------------------------+-----+
	 *    3   | HPP | NON |         WHICH <5:1>         |  ?  |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    4   |   SOFT <7:5>    |  0  |  1  |  1  |  0  |  ?  |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    5   |  ?  |  1  |  1  | B-  |  1  | B+  |  1  |  ?  |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    6   |  O  |  R  |  Y  |  G  |  B  | BSS |  1  |  1  |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 * All buttons are 0 if pressed
	 *
	 * With Motion+ enabled, the following bits will get invalid:
	 *   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    1   |  0  |  0  |              SX <5:1>       |XXXXX|
	 *    2   |  0  |  0  |              SY <5:1>       |XXXXX|
	 *   -----+-----+-----+-----------------------------+-----+
	 *    3   | HPP | NON |         WHICH <5:1>         |  ?  |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    4   |   SOFT <7:5>    |  0  |  1  |  1  |  0  |  ?  |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    5   |  ?  |  1  |  1  | B-  |  1  | B+  |  1  |XXXXX|
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    6   |  O  |  R  |  Y  |  G  |  B  | BSS |XXXXX|XXXXX|
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 */

	pressure = 7 - (ext[3] >> 5);
	which = (ext[2] >> 1) & 0x1f;
	none = !!(ext[2] & 0x40);
	hhp = !(ext[2] & 0x80);
	sx = ext[0] & 0x3f;
	sy = ext[1] & 0x3f;
	o = !(ext[5] & 0x80);
	r = !(ext[5] & 0x40);
	y = !(ext[5] & 0x20);
	g = !(ext[5] & 0x10);
	b = !(ext[5] & 0x08);
	bass = !(ext[5] & 0x04);
	bm = !(ext[4] & 0x10);
	bp = !(ext[4] & 0x04);

	if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
		sx &= 0x3e;
		sy &= 0x3e;
	}

	wiimod_drums_report_pressure(wdata, none, which, pressure,
				     o, &wdata->state.pressure_drums[0],
				     ABS_HAT2Y, 0x0e);
	wiimod_drums_report_pressure(wdata, none, which, pressure,
				     r, &wdata->state.pressure_drums[1],
				     ABS_HAT0X, 0x19);
	wiimod_drums_report_pressure(wdata, none, which, pressure,
				     y, &wdata->state.pressure_drums[2],
				     ABS_HAT2X, 0x11);
	wiimod_drums_report_pressure(wdata, none, which, pressure,
				     g, &wdata->state.pressure_drums[3],
				     ABS_HAT1X, 0x12);
	wiimod_drums_report_pressure(wdata, none, which, pressure,
				     b, &wdata->state.pressure_drums[4],
				     ABS_HAT0Y, 0x0f);

	/* Bass shares pressure with hi-hat (set via hhp) */
	wiimod_drums_report_pressure(wdata, none, hhp ? 0xff : which, pressure,
				     bass, &wdata->state.pressure_drums[5],
				     ABS_HAT3X, 0x1b);
	/* Hi-hat has no on/off values, just pressure. Force to off/0. */
	wiimod_drums_report_pressure(wdata, none, hhp ? which : 0xff, pressure,
				     0, &wdata->state.pressure_drums[6],
				     ABS_HAT3Y, 0x0e);

	input_report_abs(wdata->extension.input, ABS_X, sx - 0x20);
	input_report_abs(wdata->extension.input, ABS_Y, sy - 0x20);

	input_report_key(wdata->extension.input, BTN_START, bp);
	input_report_key(wdata->extension.input, BTN_SELECT, bm);

	input_sync(wdata->extension.input);
}

static int wiimod_drums_open(struct input_dev *dev)
{
	struct wiimote_data *wdata = input_get_drvdata(dev);
	unsigned long flags;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
	wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
	spin_unlock_irqrestore(&wdata->state.lock, flags);

	return 0;
}

static void wiimod_drums_close(struct input_dev *dev)
{
	struct wiimote_data *wdata = input_get_drvdata(dev);
	unsigned long flags;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
	wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
	spin_unlock_irqrestore(&wdata->state.lock, flags);
}

static int wiimod_drums_probe(const struct wiimod_ops *ops,
			      struct wiimote_data *wdata)
{
	int ret;

	wdata->extension.input = input_allocate_device();
	if (!wdata->extension.input)
		return -ENOMEM;

	input_set_drvdata(wdata->extension.input, wdata);
	wdata->extension.input->open = wiimod_drums_open;
	wdata->extension.input->close = wiimod_drums_close;
	wdata->extension.input->dev.parent = &wdata->hdev->dev;
	wdata->extension.input->id.bustype = wdata->hdev->bus;
	wdata->extension.input->id.vendor = wdata->hdev->vendor;
	wdata->extension.input->id.product = wdata->hdev->product;
	wdata->extension.input->id.version = wdata->hdev->version;
	wdata->extension.input->name = WIIMOTE_NAME " Drums";

	set_bit(EV_KEY, wdata->extension.input->evbit);
	set_bit(BTN_START, wdata->extension.input->keybit);
	set_bit(BTN_SELECT, wdata->extension.input->keybit);

	set_bit(EV_ABS, wdata->extension.input->evbit);
	set_bit(ABS_X, wdata->extension.input->absbit);
	set_bit(ABS_Y, wdata->extension.input->absbit);
	set_bit(ABS_HAT0X, wdata->extension.input->absbit);
	set_bit(ABS_HAT0Y, wdata->extension.input->absbit);
	set_bit(ABS_HAT1X, wdata->extension.input->absbit);
	set_bit(ABS_HAT2X, wdata->extension.input->absbit);
	set_bit(ABS_HAT2Y, wdata->extension.input->absbit);
	set_bit(ABS_HAT3X, wdata->extension.input->absbit);
	set_bit(ABS_HAT3Y, wdata->extension.input->absbit);
	input_set_abs_params(wdata->extension.input,
			     ABS_X, -32, 31, 1, 1);
	input_set_abs_params(wdata->extension.input,
			     ABS_Y, -32, 31, 1, 1);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT0X, 0, 7, 0, 0);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT0Y, 0, 7, 0, 0);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT1X, 0, 7, 0, 0);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT2X, 0, 7, 0, 0);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT2Y, 0, 7, 0, 0);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT3X, 0, 7, 0, 0);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT3Y, 0, 7, 0, 0);

	ret = input_register_device(wdata->extension.input);
	if (ret)
		goto err_free;

	return 0;

err_free:
	input_free_device(wdata->extension.input);
	wdata->extension.input = NULL;
	return ret;
}

static void wiimod_drums_remove(const struct wiimod_ops *ops,
				struct wiimote_data *wdata)
{
	if (!wdata->extension.input)
		return;

	input_unregister_device(wdata->extension.input);
	wdata->extension.input = NULL;
}

static const struct wiimod_ops wiimod_drums = {
	.flags = 0,
	.arg = 0,
	.probe = wiimod_drums_probe,
	.remove = wiimod_drums_remove,
	.in_ext = wiimod_drums_in_ext,
};

/*
 * Guitar
 * Guitar-Hero, Rock-Band and other games came bundled with guitars which can
 * be plugged as extension to a Wiimote.
 * We create a separate device for guitars and report all information via this
 * input device.
 */

enum wiimod_guitar_keys {
	WIIMOD_GUITAR_KEY_G,
	WIIMOD_GUITAR_KEY_R,
	WIIMOD_GUITAR_KEY_Y,
	WIIMOD_GUITAR_KEY_B,
	WIIMOD_GUITAR_KEY_O,
	WIIMOD_GUITAR_KEY_UP,
	WIIMOD_GUITAR_KEY_DOWN,
	WIIMOD_GUITAR_KEY_PLUS,
	WIIMOD_GUITAR_KEY_MINUS,
	WIIMOD_GUITAR_KEY_NUM,
};

static const __u16 wiimod_guitar_map[] = {
	BTN_1,			/* WIIMOD_GUITAR_KEY_G */
	BTN_2,			/* WIIMOD_GUITAR_KEY_R */
	BTN_3,			/* WIIMOD_GUITAR_KEY_Y */
	BTN_4,			/* WIIMOD_GUITAR_KEY_B */
	BTN_5,			/* WIIMOD_GUITAR_KEY_O */
	BTN_DPAD_UP,		/* WIIMOD_GUITAR_KEY_UP */
	BTN_DPAD_DOWN,		/* WIIMOD_GUITAR_KEY_DOWN */
	BTN_START,		/* WIIMOD_GUITAR_KEY_PLUS */
	BTN_SELECT,		/* WIIMOD_GUITAR_KEY_MINUS */
};

static void wiimod_guitar_in_ext(struct wiimote_data *wdata, const __u8 *ext)
{
	__u8 sx, sy, tb, wb, bd, bm, bp, bo, br, bb, bg, by, bu;

	/*   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    1   |  0  |  0  |              SX <5:0>             |
	 *    2   |  0  |  0  |              SY <5:0>             |
	 *   -----+-----+-----+-----+-----------------------------+
	 *    3   |  0  |  0  |  0  |      TB <4:0>               |
	 *   -----+-----+-----+-----+-----------------------------+
	 *    4   |  0  |  0  |  0  |      WB <4:0>               |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    5   |  1  | BD  |  1  | B-  |  1  | B+  |  1  |  1  |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    6   | BO  | BR  | BB  | BG  | BY  |  1  |  1  | BU  |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 * All buttons are 0 if pressed
	 *
	 * With Motion+ enabled, it will look like this:
	 *   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    1   |  0  |  0  |              SX <5:1>       | BU  |
	 *    2   |  0  |  0  |              SY <5:1>       |  1  |
	 *   -----+-----+-----+-----+-----------------------+-----+
	 *    3   |  0  |  0  |  0  |      TB <4:0>               |
	 *   -----+-----+-----+-----+-----------------------------+
	 *    4   |  0  |  0  |  0  |      WB <4:0>               |
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    5   |  1  | BD  |  1  | B-  |  1  | B+  |  1  |XXXXX|
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 *    6   | BO  | BR  | BB  | BG  | BY  |  1  |XXXXX|XXXXX|
	 *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
	 */

	sx = ext[0] & 0x3f;
	sy = ext[1] & 0x3f;
	tb = ext[2] & 0x1f;
	wb = ext[3] & 0x1f;
	bd = !(ext[4] & 0x40);
	bm = !(ext[4] & 0x10);
	bp = !(ext[4] & 0x04);
	bo = !(ext[5] & 0x80);
	br = !(ext[5] & 0x40);
	bb = !(ext[5] & 0x20);
	bg = !(ext[5] & 0x10);
	by = !(ext[5] & 0x08);
	bu = !(ext[5] & 0x01);

	if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
		bu = !(ext[0] & 0x01);
		sx &= 0x3e;
		sy &= 0x3e;
	}

	input_report_abs(wdata->extension.input, ABS_X, sx - 0x20);
	input_report_abs(wdata->extension.input, ABS_Y, sy - 0x20);
	input_report_abs(wdata->extension.input, ABS_HAT0X, tb);
	input_report_abs(wdata->extension.input, ABS_HAT1X, wb - 0x10);

	input_report_key(wdata->extension.input,
			 wiimod_guitar_map[WIIMOD_GUITAR_KEY_G],
			 bg);
	input_report_key(wdata->extension.input,
			 wiimod_guitar_map[WIIMOD_GUITAR_KEY_R],
			 br);
	input_report_key(wdata->extension.input,
			 wiimod_guitar_map[WIIMOD_GUITAR_KEY_Y],
			 by);
	input_report_key(wdata->extension.input,
			 wiimod_guitar_map[WIIMOD_GUITAR_KEY_B],
			 bb);
	input_report_key(wdata->extension.input,
			 wiimod_guitar_map[WIIMOD_GUITAR_KEY_O],
			 bo);
	input_report_key(wdata->extension.input,
			 wiimod_guitar_map[WIIMOD_GUITAR_KEY_UP],
			 bu);
	input_report_key(wdata->extension.input,
			 wiimod_guitar_map[WIIMOD_GUITAR_KEY_DOWN],
			 bd);
	input_report_key(wdata->extension.input,
			 wiimod_guitar_map[WIIMOD_GUITAR_KEY_PLUS],
			 bp);
	input_report_key(wdata->extension.input,
			 wiimod_guitar_map[WIIMOD_GUITAR_KEY_MINUS],
			 bm);

	input_sync(wdata->extension.input);
}

static int wiimod_guitar_open(struct input_dev *dev)
{
	struct wiimote_data *wdata = input_get_drvdata(dev);
	unsigned long flags;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
	wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
	spin_unlock_irqrestore(&wdata->state.lock, flags);

	return 0;
}

static void wiimod_guitar_close(struct input_dev *dev)
{
	struct wiimote_data *wdata = input_get_drvdata(dev);
	unsigned long flags;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
	wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
	spin_unlock_irqrestore(&wdata->state.lock, flags);
}

static int wiimod_guitar_probe(const struct wiimod_ops *ops,
			       struct wiimote_data *wdata)
{
	int ret, i;

	wdata->extension.input = input_allocate_device();
	if (!wdata->extension.input)
		return -ENOMEM;

	input_set_drvdata(wdata->extension.input, wdata);
	wdata->extension.input->open = wiimod_guitar_open;
	wdata->extension.input->close = wiimod_guitar_close;
	wdata->extension.input->dev.parent = &wdata->hdev->dev;
	wdata->extension.input->id.bustype = wdata->hdev->bus;
	wdata->extension.input->id.vendor = wdata->hdev->vendor;
	wdata->extension.input->id.product = wdata->hdev->product;
	wdata->extension.input->id.version = wdata->hdev->version;
	wdata->extension.input->name = WIIMOTE_NAME " Guitar";

	set_bit(EV_KEY, wdata->extension.input->evbit);
	for (i = 0; i < WIIMOD_GUITAR_KEY_NUM; ++i)
		set_bit(wiimod_guitar_map[i],
			wdata->extension.input->keybit);

	set_bit(EV_ABS, wdata->extension.input->evbit);
	set_bit(ABS_X, wdata->extension.input->absbit);
	set_bit(ABS_Y, wdata->extension.input->absbit);
	set_bit(ABS_HAT0X, wdata->extension.input->absbit);
	set_bit(ABS_HAT1X, wdata->extension.input->absbit);
	input_set_abs_params(wdata->extension.input,
			     ABS_X, -32, 31, 1, 1);
	input_set_abs_params(wdata->extension.input,
			     ABS_Y, -32, 31, 1, 1);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT0X, 0, 0x1f, 1, 1);
	input_set_abs_params(wdata->extension.input,
			     ABS_HAT1X, 0, 0x0f, 1, 1);

	ret = input_register_device(wdata->extension.input);
	if (ret)
		goto err_free;

	return 0;

err_free:
	input_free_device(wdata->extension.input);
	wdata->extension.input = NULL;
	return ret;
}

static void wiimod_guitar_remove(const struct wiimod_ops *ops,
				 struct wiimote_data *wdata)
{
	if (!wdata->extension.input)
		return;

	input_unregister_device(wdata->extension.input);
	wdata->extension.input = NULL;
}

static const struct wiimod_ops wiimod_guitar = {
	.flags = 0,
	.arg = 0,
	.probe = wiimod_guitar_probe,
	.remove = wiimod_guitar_remove,
	.in_ext = wiimod_guitar_in_ext,
};

2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461
/*
 * Builtin Motion Plus
 * This module simply sets the WIIPROTO_FLAG_BUILTIN_MP protocol flag which
 * disables polling for Motion-Plus. This should be set only for devices which
 * don't allow MP hotplugging.
 */

static int wiimod_builtin_mp_probe(const struct wiimod_ops *ops,
				   struct wiimote_data *wdata)
{
	unsigned long flags;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wdata->state.flags |= WIIPROTO_FLAG_BUILTIN_MP;
	spin_unlock_irqrestore(&wdata->state.lock, flags);

	return 0;
}

static void wiimod_builtin_mp_remove(const struct wiimod_ops *ops,
				     struct wiimote_data *wdata)
{
	unsigned long flags;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wdata->state.flags |= WIIPROTO_FLAG_BUILTIN_MP;
	spin_unlock_irqrestore(&wdata->state.lock, flags);
}

static const struct wiimod_ops wiimod_builtin_mp = {
	.flags = 0,
	.arg = 0,
	.probe = wiimod_builtin_mp_probe,
	.remove = wiimod_builtin_mp_remove,
};

/*
 * No Motion Plus
 * This module simply sets the WIIPROTO_FLAG_NO_MP protocol flag which
 * disables motion-plus. This is needed for devices that advertise this but we
 * don't know how to use it (or whether it is actually present).
 */

static int wiimod_no_mp_probe(const struct wiimod_ops *ops,
			      struct wiimote_data *wdata)
{
	unsigned long flags;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wdata->state.flags |= WIIPROTO_FLAG_NO_MP;
	spin_unlock_irqrestore(&wdata->state.lock, flags);

	return 0;
}

static void wiimod_no_mp_remove(const struct wiimod_ops *ops,
				struct wiimote_data *wdata)
{
	unsigned long flags;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wdata->state.flags |= WIIPROTO_FLAG_NO_MP;
	spin_unlock_irqrestore(&wdata->state.lock, flags);
}

static const struct wiimod_ops wiimod_no_mp = {
	.flags = 0,
	.arg = 0,
	.probe = wiimod_no_mp_probe,
	.remove = wiimod_no_mp_remove,
};

2462 2463
/*
 * Motion Plus
2464 2465 2466 2467 2468 2469
 * The Motion Plus extension provides rotation sensors (gyro) as a small
 * extension device for Wii Remotes. Many devices have them built-in so
 * you cannot see them from the outside.
 * Motion Plus extensions are special because they are on a separate extension
 * port and allow other extensions to be used simultaneously. This is all
 * handled by the Wiimote Core so we don't have to deal with it.
2470 2471
 */

2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489
static void wiimod_mp_in_mp(struct wiimote_data *wdata, const __u8 *ext)
{
	__s32 x, y, z;

	/*        |   8    7    6    5    4    3 |  2  |  1  |
	 *   -----+------------------------------+-----+-----+
	 *    1   |               Yaw Speed <7:0>            |
	 *    2   |              Roll Speed <7:0>            |
	 *    3   |             Pitch Speed <7:0>            |
	 *   -----+------------------------------+-----+-----+
	 *    4   |       Yaw Speed <13:8>       | Yaw |Pitch|
	 *   -----+------------------------------+-----+-----+
	 *    5   |      Roll Speed <13:8>       |Roll | Ext |
	 *   -----+------------------------------+-----+-----+
	 *    6   |     Pitch Speed <13:8>       |  1  |  0  |
	 *   -----+------------------------------+-----+-----+
	 * The single bits Yaw, Roll, Pitch in the lower right corner specify
	 * whether the wiimote is rotating fast (0) or slow (1). Speed for slow
2490 2491 2492 2493 2494
	 * roation is 8192/440 units / deg/s and for fast rotation 8192/2000
	 * units / deg/s. To get a linear scale for fast rotation we multiply
	 * by 2000/440 = ~4.5454 and scale both fast and slow by 9 to match the
	 * previous scale reported by this driver.
	 * This leaves a linear scale with 8192*9/440 (~167.564) units / deg/s.
2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512
	 * If the wiimote is not rotating the sensor reports 2^13 = 8192.
	 * Ext specifies whether an extension is connected to the motionp.
	 * which is parsed by wiimote-core.
	 */

	x = ext[0];
	y = ext[1];
	z = ext[2];

	x |= (((__u16)ext[3]) << 6) & 0xff00;
	y |= (((__u16)ext[4]) << 6) & 0xff00;
	z |= (((__u16)ext[5]) << 6) & 0xff00;

	x -= 8192;
	y -= 8192;
	z -= 8192;

	if (!(ext[3] & 0x02))
2513
		x = (x * 2000 * 9) / 440;
2514 2515 2516
	else
		x *= 9;
	if (!(ext[4] & 0x02))
2517
		y = (y * 2000 * 9) / 440;
2518 2519 2520
	else
		y *= 9;
	if (!(ext[3] & 0x01))
2521
		z = (z * 2000 * 9) / 440;
2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608
	else
		z *= 9;

	input_report_abs(wdata->mp, ABS_RX, x);
	input_report_abs(wdata->mp, ABS_RY, y);
	input_report_abs(wdata->mp, ABS_RZ, z);
	input_sync(wdata->mp);
}

static int wiimod_mp_open(struct input_dev *dev)
{
	struct wiimote_data *wdata = input_get_drvdata(dev);
	unsigned long flags;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wdata->state.flags |= WIIPROTO_FLAG_MP_USED;
	wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
	__wiimote_schedule(wdata);
	spin_unlock_irqrestore(&wdata->state.lock, flags);

	return 0;
}

static void wiimod_mp_close(struct input_dev *dev)
{
	struct wiimote_data *wdata = input_get_drvdata(dev);
	unsigned long flags;

	spin_lock_irqsave(&wdata->state.lock, flags);
	wdata->state.flags &= ~WIIPROTO_FLAG_MP_USED;
	wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
	__wiimote_schedule(wdata);
	spin_unlock_irqrestore(&wdata->state.lock, flags);
}

static int wiimod_mp_probe(const struct wiimod_ops *ops,
			   struct wiimote_data *wdata)
{
	int ret;

	wdata->mp = input_allocate_device();