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hid-wiimote-modules.c
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Device Modules for Nintendo Wii / Wii U HID Driver
* Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com>
*/
/*
*/
/*
* 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"
/*
* 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.
*/
/* 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);
}
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;
/* 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);
return 0;
}
static int wiimod_rumble_probe(const struct wiimod_ops *ops,
struct wiimote_data *wdata)
{
INIT_WORK(&wdata->rumble_worker, wiimod_rumble_worker);
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;
cancel_work_sync(&wdata->rumble_worker);
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,
};
/*
* 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)
{
struct wiimote_data *wdata = power_supply_get_drvdata(psy);
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)
{
struct power_supply_config psy_cfg = { .drv_data = wdata, };
int ret;
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)
return -ENOMEM;
wdata->battery = power_supply_register(&wdata->hdev->dev,
&wdata->battery_desc,
&psy_cfg);
if (IS_ERR(wdata->battery)) {
hid_err(wdata->hdev, "cannot register battery device\n");
ret = PTR_ERR(wdata->battery);
goto err_free;
}
power_supply_powers(wdata->battery, &wdata->hdev->dev);
return 0;
err_free:
kfree(wdata->battery_desc.name);
wdata->battery_desc.name = NULL;
return ret;
}
static void wiimod_battery_remove(const struct wiimod_ops *ops,
struct wiimote_data *wdata)
{
if (!wdata->battery_desc.name)
return;
power_supply_unregister(wdata->battery);
kfree(wdata->battery_desc.name);
wdata->battery_desc.name = NULL;
}
static const struct wiimod_ops wiimod_battery = {
.flags = 0,
.arg = 0,
.probe = wiimod_battery_probe,
.remove = wiimod_battery_remove,
};
/*
* 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;
struct wiimote_data *wdata = dev_to_wii(dev);
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;
struct wiimote_data *wdata = dev_to_wii(dev);
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,
},
};
/*
* 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,
};
/*
* 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;
}
/*
* 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,
};
/*
* 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,
};
/*
* Classic Controller