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-rw-r--r--drivers/hid/hid-wiimote-ext.c752
1 files changed, 752 insertions, 0 deletions
diff --git a/drivers/hid/hid-wiimote-ext.c b/drivers/hid/hid-wiimote-ext.c
new file mode 100644
index 00000000000..aa958706c0e
--- /dev/null
+++ b/drivers/hid/hid-wiimote-ext.c
@@ -0,0 +1,752 @@
+/*
+ * HID driver for Nintendo Wiimote extension devices
+ * Copyright (c) 2011 David Herrmann
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#include <linux/atomic.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/workqueue.h>
+#include "hid-wiimote.h"
+
+struct wiimote_ext {
+ struct wiimote_data *wdata;
+ struct work_struct worker;
+ struct input_dev *input;
+ struct input_dev *mp_input;
+
+ atomic_t opened;
+ atomic_t mp_opened;
+ bool plugged;
+ bool mp_plugged;
+ bool motionp;
+ __u8 ext_type;
+};
+
+enum wiiext_type {
+ WIIEXT_NONE, /* placeholder */
+ WIIEXT_CLASSIC, /* Nintendo classic controller */
+ WIIEXT_NUNCHUCK, /* Nintendo nunchuck controller */
+};
+
+enum wiiext_keys {
+ WIIEXT_KEY_C,
+ WIIEXT_KEY_Z,
+ WIIEXT_KEY_A,
+ WIIEXT_KEY_B,
+ WIIEXT_KEY_X,
+ WIIEXT_KEY_Y,
+ WIIEXT_KEY_ZL,
+ WIIEXT_KEY_ZR,
+ WIIEXT_KEY_PLUS,
+ WIIEXT_KEY_MINUS,
+ WIIEXT_KEY_HOME,
+ WIIEXT_KEY_LEFT,
+ WIIEXT_KEY_RIGHT,
+ WIIEXT_KEY_UP,
+ WIIEXT_KEY_DOWN,
+ WIIEXT_KEY_LT,
+ WIIEXT_KEY_RT,
+ WIIEXT_KEY_COUNT
+};
+
+static __u16 wiiext_keymap[] = {
+ BTN_C, /* WIIEXT_KEY_C */
+ BTN_Z, /* WIIEXT_KEY_Z */
+ BTN_A, /* WIIEXT_KEY_A */
+ BTN_B, /* WIIEXT_KEY_B */
+ BTN_X, /* WIIEXT_KEY_X */
+ BTN_Y, /* WIIEXT_KEY_Y */
+ BTN_TL2, /* WIIEXT_KEY_ZL */
+ BTN_TR2, /* WIIEXT_KEY_ZR */
+ KEY_NEXT, /* WIIEXT_KEY_PLUS */
+ KEY_PREVIOUS, /* WIIEXT_KEY_MINUS */
+ BTN_MODE, /* WIIEXT_KEY_HOME */
+ KEY_LEFT, /* WIIEXT_KEY_LEFT */
+ KEY_RIGHT, /* WIIEXT_KEY_RIGHT */
+ KEY_UP, /* WIIEXT_KEY_UP */
+ KEY_DOWN, /* WIIEXT_KEY_DOWN */
+ BTN_TL, /* WIIEXT_KEY_LT */
+ BTN_TR, /* WIIEXT_KEY_RT */
+};
+
+/* diable all extensions */
+static void ext_disable(struct wiimote_ext *ext)
+{
+ unsigned long flags;
+ __u8 wmem = 0x55;
+
+ if (!wiimote_cmd_acquire(ext->wdata)) {
+ wiimote_cmd_write(ext->wdata, 0xa400f0, &wmem, sizeof(wmem));
+ wiimote_cmd_release(ext->wdata);
+ }
+
+ spin_lock_irqsave(&ext->wdata->state.lock, flags);
+ ext->motionp = false;
+ ext->ext_type = WIIEXT_NONE;
+ wiiproto_req_drm(ext->wdata, WIIPROTO_REQ_NULL);
+ spin_unlock_irqrestore(&ext->wdata->state.lock, flags);
+}
+
+static bool motionp_read(struct wiimote_ext *ext)
+{
+ __u8 rmem[2], wmem;
+ ssize_t ret;
+ bool avail = false;
+
+ if (!atomic_read(&ext->mp_opened))
+ return false;
+
+ if (wiimote_cmd_acquire(ext->wdata))
+ return false;
+
+ /* initialize motion plus */
+ wmem = 0x55;
+ ret = wiimote_cmd_write(ext->wdata, 0xa600f0, &wmem, sizeof(wmem));
+ if (ret)
+ goto error;
+
+ /* read motion plus ID */
+ ret = wiimote_cmd_read(ext->wdata, 0xa600fe, rmem, 2);
+ if (ret == 2 || rmem[1] == 0x5)
+ avail = true;
+
+error:
+ wiimote_cmd_release(ext->wdata);
+ return avail;
+}
+
+static __u8 ext_read(struct wiimote_ext *ext)
+{
+ ssize_t ret;
+ __u8 rmem[2], wmem;
+ __u8 type = WIIEXT_NONE;
+
+ if (!ext->plugged || !atomic_read(&ext->opened))
+ return WIIEXT_NONE;
+
+ if (wiimote_cmd_acquire(ext->wdata))
+ return WIIEXT_NONE;
+
+ /* initialize extension */
+ wmem = 0x55;
+ ret = wiimote_cmd_write(ext->wdata, 0xa400f0, &wmem, sizeof(wmem));
+ if (!ret) {
+ /* disable encryption */
+ wmem = 0x0;
+ wiimote_cmd_write(ext->wdata, 0xa400fb, &wmem, sizeof(wmem));
+ }
+
+ /* read extension ID */
+ ret = wiimote_cmd_read(ext->wdata, 0xa400fe, rmem, 2);
+ if (ret == 2) {
+ if (rmem[0] == 0 && rmem[1] == 0)
+ type = WIIEXT_NUNCHUCK;
+ else if (rmem[0] == 0x01 && rmem[1] == 0x01)
+ type = WIIEXT_CLASSIC;
+ }
+
+ wiimote_cmd_release(ext->wdata);
+
+ return type;
+}
+
+static void ext_enable(struct wiimote_ext *ext, bool motionp, __u8 ext_type)
+{
+ unsigned long flags;
+ __u8 wmem;
+ int ret;
+
+ if (motionp) {
+ if (wiimote_cmd_acquire(ext->wdata))
+ return;
+
+ if (ext_type == WIIEXT_CLASSIC)
+ wmem = 0x07;
+ else if (ext_type == WIIEXT_NUNCHUCK)
+ wmem = 0x05;
+ else
+ wmem = 0x04;
+
+ ret = wiimote_cmd_write(ext->wdata, 0xa600fe, &wmem, sizeof(wmem));
+ wiimote_cmd_release(ext->wdata);
+ if (ret)
+ return;
+ }
+
+ spin_lock_irqsave(&ext->wdata->state.lock, flags);
+ ext->motionp = motionp;
+ ext->ext_type = ext_type;
+ wiiproto_req_drm(ext->wdata, WIIPROTO_REQ_NULL);
+ spin_unlock_irqrestore(&ext->wdata->state.lock, flags);
+}
+
+static void wiiext_worker(struct work_struct *work)
+{
+ struct wiimote_ext *ext = container_of(work, struct wiimote_ext,
+ worker);
+ bool motionp;
+ __u8 ext_type;
+
+ ext_disable(ext);
+ motionp = motionp_read(ext);
+ ext_type = ext_read(ext);
+ ext_enable(ext, motionp, ext_type);
+}
+
+/* schedule work only once, otherwise mark for reschedule */
+static void wiiext_schedule(struct wiimote_ext *ext)
+{
+ queue_work(system_nrt_wq, &ext->worker);
+}
+
+/*
+ * Reacts on extension port events
+ * Whenever the driver gets an event from the wiimote that an extension has been
+ * plugged or unplugged, this funtion shall be called. It checks what extensions
+ * are connected and initializes and activates them.
+ * This can be called in atomic context. The initialization is done in a
+ * separate worker thread. The state.lock spinlock must be held by the caller.
+ */
+void wiiext_event(struct wiimote_data *wdata, bool plugged)
+{
+ if (!wdata->ext)
+ return;
+
+ if (wdata->ext->plugged == plugged)
+ return;
+
+ wdata->ext->plugged = plugged;
+
+ if (!plugged)
+ wdata->ext->mp_plugged = false;
+
+ /*
+ * We need to call wiiext_schedule(wdata->ext) here, however, the
+ * extension initialization logic is not fully understood and so
+ * automatic initialization is not supported, yet.
+ */
+}
+
+/*
+ * Returns true if the current DRM mode should contain extension data and false
+ * if there is no interest in extension data.
+ * All supported extensions send 6 byte extension data so any DRM that contains
+ * extension bytes is fine.
+ * The caller must hold the state.lock spinlock.
+ */
+bool wiiext_active(struct wiimote_data *wdata)
+{
+ if (!wdata->ext)
+ return false;
+
+ return wdata->ext->motionp || wdata->ext->ext_type;
+}
+
+static void handler_motionp(struct wiimote_ext *ext, const __u8 *payload)
+{
+ __s32 x, y, z;
+ bool plugged;
+
+ /* | 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
+ * roation is 440 deg/s and for fast rotation 2000 deg/s. To get a
+ * linear scale we multiply by 2000/440 = ~4.5454 which is 18 for fast
+ * and 9 for slow.
+ * If the wiimote is not rotating the sensor reports 2^13 = 8192.
+ * Ext specifies whether an extension is connected to the motionp.
+ */
+
+ x = payload[0];
+ y = payload[1];
+ z = payload[2];
+
+ x |= (((__u16)payload[3]) << 6) & 0xff00;
+ y |= (((__u16)payload[4]) << 6) & 0xff00;
+ z |= (((__u16)payload[5]) << 6) & 0xff00;
+
+ x -= 8192;
+ y -= 8192;
+ z -= 8192;
+
+ if (!(payload[3] & 0x02))
+ x *= 18;
+ else
+ x *= 9;
+ if (!(payload[4] & 0x02))
+ y *= 18;
+ else
+ y *= 9;
+ if (!(payload[3] & 0x01))
+ z *= 18;
+ else
+ z *= 9;
+
+ input_report_abs(ext->mp_input, ABS_RX, x);
+ input_report_abs(ext->mp_input, ABS_RY, y);
+ input_report_abs(ext->mp_input, ABS_RZ, z);
+ input_sync(ext->mp_input);
+
+ plugged = payload[5] & 0x01;
+ if (plugged != ext->mp_plugged)
+ ext->mp_plugged = plugged;
+}
+
+static void handler_nunchuck(struct wiimote_ext *ext, const __u8 *payload)
+{
+ __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 = payload[0];
+ by = payload[1];
+ bx -= 128;
+ by -= 128;
+
+ x = payload[2] << 2;
+ y = payload[3] << 2;
+ z = payload[4] << 2;
+
+ if (ext->motionp) {
+ x |= (payload[5] >> 3) & 0x02;
+ y |= (payload[5] >> 4) & 0x02;
+ z &= ~0x4;
+ z |= (payload[5] >> 5) & 0x06;
+ } else {
+ x |= (payload[5] >> 2) & 0x03;
+ y |= (payload[5] >> 4) & 0x03;
+ z |= (payload[5] >> 6) & 0x03;
+ }
+
+ x -= 0x200;
+ y -= 0x200;
+ z -= 0x200;
+
+ input_report_abs(ext->input, ABS_HAT0X, bx);
+ input_report_abs(ext->input, ABS_HAT0Y, by);
+
+ input_report_abs(ext->input, ABS_RX, x);
+ input_report_abs(ext->input, ABS_RY, y);
+ input_report_abs(ext->input, ABS_RZ, z);
+
+ if (ext->motionp) {
+ input_report_key(ext->input,
+ wiiext_keymap[WIIEXT_KEY_Z], !!(payload[5] & 0x04));
+ input_report_key(ext->input,
+ wiiext_keymap[WIIEXT_KEY_C], !!(payload[5] & 0x08));
+ } else {
+ input_report_key(ext->input,
+ wiiext_keymap[WIIEXT_KEY_Z], !!(payload[5] & 0x01));
+ input_report_key(ext->input,
+ wiiext_keymap[WIIEXT_KEY_C], !!(payload[5] & 0x02));
+ }
+
+ input_sync(ext->input);
+}
+
+static void handler_classic(struct wiimote_ext *ext, const __u8 *payload)
+{
+ __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 |
+ * -----+-----+-----+-----+-----+-----+-----+-----+-----+
+ * 1 | RX <4:3> | LX <5:1> | BDU |
+ * 2 | RX <2:1> | LY <5:1> | BDL |
+ * -----+-----+-----+-----+-----------------------+-----+
+ * 3 |RX<0>| LT <4:3> | RY <4:0> |
+ * -----+-----+-----------+-----------------------------+
+ * 4 | LT <2:0> | RT <4:0> |
+ * -----+-----+-----+-----+-----+-----+-----+-----+-----+
+ * 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 (ext->motionp) {
+ lx = payload[0] & 0x3e;
+ ly = payload[0] & 0x3e;
+ } else {
+ lx = payload[0] & 0x3f;
+ ly = payload[0] & 0x3f;
+ }
+
+ rx = (payload[0] >> 3) & 0x14;
+ rx |= (payload[1] >> 5) & 0x06;
+ rx |= (payload[2] >> 7) & 0x01;
+ ry = payload[2] & 0x1f;
+
+ rt = payload[3] & 0x1f;
+ lt = (payload[2] >> 2) & 0x18;
+ lt |= (payload[3] >> 5) & 0x07;
+
+ rx <<= 1;
+ ry <<= 1;
+ rt <<= 1;
+ lt <<= 1;
+
+ input_report_abs(ext->input, ABS_HAT1X, lx - 0x20);
+ input_report_abs(ext->input, ABS_HAT1Y, ly - 0x20);
+ input_report_abs(ext->input, ABS_HAT2X, rx - 0x20);
+ input_report_abs(ext->input, ABS_HAT2Y, ry - 0x20);
+ input_report_abs(ext->input, ABS_HAT3X, rt - 0x20);
+ input_report_abs(ext->input, ABS_HAT3Y, lt - 0x20);
+
+ input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_RIGHT],
+ !!(payload[4] & 0x80));
+ input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_DOWN],
+ !!(payload[4] & 0x40));
+ input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_LT],
+ !!(payload[4] & 0x20));
+ input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_MINUS],
+ !!(payload[4] & 0x10));
+ input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_HOME],
+ !!(payload[4] & 0x08));
+ input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_PLUS],
+ !!(payload[4] & 0x04));
+ input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_RT],
+ !!(payload[4] & 0x02));
+ input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_ZL],
+ !!(payload[5] & 0x80));
+ input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_B],
+ !!(payload[5] & 0x40));
+ input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_Y],
+ !!(payload[5] & 0x20));
+ input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_A],
+ !!(payload[5] & 0x10));
+ input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_X],
+ !!(payload[5] & 0x08));
+ input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_ZR],
+ !!(payload[5] & 0x04));
+
+ if (ext->motionp) {
+ input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_UP],
+ !!(payload[0] & 0x01));
+ input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_LEFT],
+ !!(payload[1] & 0x01));
+ } else {
+ input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_UP],
+ !!(payload[5] & 0x01));
+ input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_LEFT],
+ !!(payload[5] & 0x02));
+ }
+
+ input_sync(ext->input);
+}
+
+/* call this with state.lock spinlock held */
+void wiiext_handle(struct wiimote_data *wdata, const __u8 *payload)
+{
+ struct wiimote_ext *ext = wdata->ext;
+
+ if (!ext)
+ return;
+
+ if (ext->motionp && (payload[5] & 0x02)) {
+ handler_motionp(ext, payload);
+ } else if (ext->ext_type == WIIEXT_NUNCHUCK) {
+ handler_nunchuck(ext, payload);
+ } else if (ext->ext_type == WIIEXT_CLASSIC) {
+ handler_classic(ext, payload);
+ }
+}
+
+static ssize_t wiiext_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct wiimote_data *wdata = dev_to_wii(dev);
+ __u8 type = WIIEXT_NONE;
+ bool motionp = false;
+ unsigned long flags;
+
+ spin_lock_irqsave(&wdata->state.lock, flags);
+ if (wdata->ext) {
+ motionp = wdata->ext->motionp;
+ type = wdata->ext->ext_type;
+ }
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+
+ if (type == WIIEXT_NUNCHUCK) {
+ if (motionp)
+ return sprintf(buf, "motionp+nunchuck\n");
+ else
+ return sprintf(buf, "nunchuck\n");
+ } else if (type == WIIEXT_CLASSIC) {
+ if (motionp)
+ return sprintf(buf, "motionp+classic\n");
+ else
+ return sprintf(buf, "classic\n");
+ } else {
+ if (motionp)
+ return sprintf(buf, "motionp\n");
+ else
+ return sprintf(buf, "none\n");
+ }
+}
+
+static DEVICE_ATTR(extension, S_IRUGO, wiiext_show, NULL);
+
+static int wiiext_input_open(struct input_dev *dev)
+{
+ struct wiimote_ext *ext = input_get_drvdata(dev);
+ int ret;
+
+ ret = hid_hw_open(ext->wdata->hdev);
+ if (ret)
+ return ret;
+
+ atomic_inc(&ext->opened);
+ wiiext_schedule(ext);
+
+ return 0;
+}
+
+static void wiiext_input_close(struct input_dev *dev)
+{
+ struct wiimote_ext *ext = input_get_drvdata(dev);
+
+ atomic_dec(&ext->opened);
+ wiiext_schedule(ext);
+ hid_hw_close(ext->wdata->hdev);
+}
+
+static int wiiext_mp_open(struct input_dev *dev)
+{
+ struct wiimote_ext *ext = input_get_drvdata(dev);
+ int ret;
+
+ ret = hid_hw_open(ext->wdata->hdev);
+ if (ret)
+ return ret;
+
+ atomic_inc(&ext->mp_opened);
+ wiiext_schedule(ext);
+
+ return 0;
+}
+
+static void wiiext_mp_close(struct input_dev *dev)
+{
+ struct wiimote_ext *ext = input_get_drvdata(dev);
+
+ atomic_dec(&ext->mp_opened);
+ wiiext_schedule(ext);
+ hid_hw_close(ext->wdata->hdev);
+}
+
+/* Initializes the extension driver of a wiimote */
+int wiiext_init(struct wiimote_data *wdata)
+{
+ struct wiimote_ext *ext;
+ unsigned long flags;
+ int ret, i;
+
+ ext = kzalloc(sizeof(*ext), GFP_KERNEL);
+ if (!ext)
+ return -ENOMEM;
+
+ ext->wdata = wdata;
+ INIT_WORK(&ext->worker, wiiext_worker);
+
+ ext->input = input_allocate_device();
+ if (!ext->input) {
+ ret = -ENOMEM;
+ goto err_input;
+ }
+
+ input_set_drvdata(ext->input, ext);
+ ext->input->open = wiiext_input_open;
+ ext->input->close = wiiext_input_close;
+ ext->input->dev.parent = &wdata->hdev->dev;
+ ext->input->id.bustype = wdata->hdev->bus;
+ ext->input->id.vendor = wdata->hdev->vendor;
+ ext->input->id.product = wdata->hdev->product;
+ ext->input->id.version = wdata->hdev->version;
+ ext->input->name = WIIMOTE_NAME " Extension";
+
+ set_bit(EV_KEY, ext->input->evbit);
+ for (i = 0; i < WIIEXT_KEY_COUNT; ++i)
+ set_bit(wiiext_keymap[i], ext->input->keybit);
+
+ set_bit(EV_ABS, ext->input->evbit);
+ set_bit(ABS_HAT0X, ext->input->absbit);
+ set_bit(ABS_HAT0Y, ext->input->absbit);
+ set_bit(ABS_HAT1X, ext->input->absbit);
+ set_bit(ABS_HAT1Y, ext->input->absbit);
+ set_bit(ABS_HAT2X, ext->input->absbit);
+ set_bit(ABS_HAT2Y, ext->input->absbit);
+ set_bit(ABS_HAT3X, ext->input->absbit);
+ set_bit(ABS_HAT3Y, ext->input->absbit);
+ input_set_abs_params(ext->input, ABS_HAT0X, -120, 120, 2, 4);
+ input_set_abs_params(ext->input, ABS_HAT0Y, -120, 120, 2, 4);
+ input_set_abs_params(ext->input, ABS_HAT1X, -30, 30, 1, 1);
+ input_set_abs_params(ext->input, ABS_HAT1Y, -30, 30, 1, 1);
+ input_set_abs_params(ext->input, ABS_HAT2X, -30, 30, 1, 1);
+ input_set_abs_params(ext->input, ABS_HAT2Y, -30, 30, 1, 1);
+ input_set_abs_params(ext->input, ABS_HAT3X, -30, 30, 1, 1);
+ input_set_abs_params(ext->input, ABS_HAT3Y, -30, 30, 1, 1);
+ set_bit(ABS_RX, ext->input->absbit);
+ set_bit(ABS_RY, ext->input->absbit);
+ set_bit(ABS_RZ, ext->input->absbit);
+ input_set_abs_params(ext->input, ABS_RX, -500, 500, 2, 4);
+ input_set_abs_params(ext->input, ABS_RY, -500, 500, 2, 4);
+ input_set_abs_params(ext->input, ABS_RZ, -500, 500, 2, 4);
+
+ ret = input_register_device(ext->input);
+ if (ret) {
+ input_free_device(ext->input);
+ goto err_input;
+ }
+
+ ext->mp_input = input_allocate_device();
+ if (!ext->mp_input) {
+ ret = -ENOMEM;
+ goto err_mp;
+ }
+
+ input_set_drvdata(ext->mp_input, ext);
+ ext->mp_input->open = wiiext_mp_open;
+ ext->mp_input->close = wiiext_mp_close;
+ ext->mp_input->dev.parent = &wdata->hdev->dev;
+ ext->mp_input->id.bustype = wdata->hdev->bus;
+ ext->mp_input->id.vendor = wdata->hdev->vendor;
+ ext->mp_input->id.product = wdata->hdev->product;
+ ext->mp_input->id.version = wdata->hdev->version;
+ ext->mp_input->name = WIIMOTE_NAME " Motion+";
+
+ set_bit(EV_ABS, ext->mp_input->evbit);
+ set_bit(ABS_RX, ext->mp_input->absbit);
+ set_bit(ABS_RY, ext->mp_input->absbit);
+ set_bit(ABS_RZ, ext->mp_input->absbit);
+ input_set_abs_params(ext->mp_input, ABS_RX, -160000, 160000, 4, 8);
+ input_set_abs_params(ext->mp_input, ABS_RY, -160000, 160000, 4, 8);
+ input_set_abs_params(ext->mp_input, ABS_RZ, -160000, 160000, 4, 8);
+
+ ret = input_register_device(ext->mp_input);
+ if (ret) {
+ input_free_device(ext->mp_input);
+ goto err_mp;
+ }
+
+ ret = device_create_file(&wdata->hdev->dev, &dev_attr_extension);
+ if (ret)
+ goto err_dev;
+
+ spin_lock_irqsave(&wdata->state.lock, flags);
+ wdata->ext = ext;
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+
+ return 0;
+
+err_dev:
+ input_unregister_device(ext->mp_input);
+err_mp:
+ input_unregister_device(ext->input);
+err_input:
+ kfree(ext);
+ return ret;
+}
+
+/* Deinitializes the extension driver of a wiimote */
+void wiiext_deinit(struct wiimote_data *wdata)
+{
+ struct wiimote_ext *ext = wdata->ext;
+ unsigned long flags;
+
+ if (!ext)
+ return;
+
+ /*
+ * We first unset wdata->ext to avoid further input from the wiimote
+ * core. The worker thread does not access this pointer so it is not
+ * affected by this.
+ * We kill the worker after this so it does not get respawned during
+ * deinitialization.
+ */
+
+ spin_lock_irqsave(&wdata->state.lock, flags);
+ wdata->ext = NULL;
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+
+ device_remove_file(&wdata->hdev->dev, &dev_attr_extension);
+ input_unregister_device(ext->mp_input);
+ input_unregister_device(ext->input);
+
+ cancel_work_sync(&ext->worker);
+ kfree(ext);
+}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-14 12:40:13 +0000