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drivers/hid/hid-wiimote-ext.c
21.1 KB
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/* * 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; |
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struct input_dev *input; struct input_dev *mp_input; |
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atomic_t opened; atomic_t mp_opened; bool plugged; |
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bool mp_plugged; |
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bool motionp; __u8 ext_type; }; enum wiiext_type { WIIEXT_NONE, /* placeholder */ WIIEXT_CLASSIC, /* Nintendo classic controller */ WIIEXT_NUNCHUCK, /* Nintendo nunchuck controller */ }; |
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enum wiiext_keys { WIIEXT_KEY_C, WIIEXT_KEY_Z, |
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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, |
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WIIEXT_KEY_COUNT }; static __u16 wiiext_keymap[] = { BTN_C, /* WIIEXT_KEY_C */ BTN_Z, /* WIIEXT_KEY_Z */ |
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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 */ |
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}; |
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/* diable all extensions */ static void ext_disable(struct wiimote_ext *ext) { unsigned long flags; |
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__u8 wmem = 0x55; if (!wiimote_cmd_acquire(ext->wdata)) { wiimote_cmd_write(ext->wdata, 0xa400f0, &wmem, sizeof(wmem)); wiimote_cmd_release(ext->wdata); } |
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spin_lock_irqsave(&ext->wdata->state.lock, flags); ext->motionp = false; ext->ext_type = WIIEXT_NONE; |
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wiiproto_req_drm(ext->wdata, WIIPROTO_REQ_NULL); |
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spin_unlock_irqrestore(&ext->wdata->state.lock, flags); } static bool motionp_read(struct wiimote_ext *ext) { |
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__u8 rmem[2], wmem; ssize_t ret; bool avail = false; |
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if (!atomic_read(&ext->mp_opened)) return false; |
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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; |
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} static __u8 ext_read(struct wiimote_ext *ext) { |
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ssize_t ret; __u8 rmem[2], wmem; __u8 type = WIIEXT_NONE; |
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if (!ext->plugged || !atomic_read(&ext->opened)) |
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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; |
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} static void ext_enable(struct wiimote_ext *ext, bool motionp, __u8 ext_type) { unsigned long flags; |
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__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; } |
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spin_lock_irqsave(&ext->wdata->state.lock, flags); ext->motionp = motionp; ext->ext_type = ext_type; |
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wiiproto_req_drm(ext->wdata, WIIPROTO_REQ_NULL); |
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spin_unlock_irqrestore(&ext->wdata->state.lock, flags); } |
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static void wiiext_worker(struct work_struct *work) { struct wiimote_ext *ext = container_of(work, struct wiimote_ext, worker); |
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bool motionp; __u8 ext_type; ext_disable(ext); motionp = motionp_read(ext); ext_type = ext_read(ext); ext_enable(ext, motionp, ext_type); |
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} /* 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; |
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if (!plugged) wdata->ext->mp_plugged = false; |
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/* * 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; } |
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static void handler_motionp(struct wiimote_ext *ext, const __u8 *payload) { |
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__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; |
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} static void handler_nunchuck(struct wiimote_ext *ext, const __u8 *payload) { |
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__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); |
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} static void handler_classic(struct wiimote_ext *ext, const __u8 *payload) { |
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__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); |
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} /* 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); } } |
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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 "); else return sprintf(buf, "nunchuck "); } else if (type == WIIEXT_CLASSIC) { if (motionp) return sprintf(buf, "motionp+classic "); else return sprintf(buf, "classic "); } else { if (motionp) return sprintf(buf, "motionp "); else return sprintf(buf, "none "); } } static DEVICE_ATTR(extension, S_IRUGO, wiiext_show, NULL); |
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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); } |
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/* Initializes the extension driver of a wiimote */ int wiiext_init(struct wiimote_data *wdata) { struct wiimote_ext *ext; unsigned long flags; |
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int ret, i; |
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ext = kzalloc(sizeof(*ext), GFP_KERNEL); if (!ext) return -ENOMEM; ext->wdata = wdata; INIT_WORK(&ext->worker, wiiext_worker); |
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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"; |
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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); |
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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); |
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input_set_abs_params(ext->input, ABS_HAT0X, -120, 120, 2, 4); input_set_abs_params(ext->input, ABS_HAT0Y, -120, 120, 2, 4); |
5906215ba HID: wiimote: Par... |
650 651 652 653 654 655 |
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); |
a53535014 HID: wiimote: Par... |
656 657 658 659 660 661 |
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); |
479901ba1 HID: wiimote: Reg... |
662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 |
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+"; |
b17b57a5d HID: wiimote: Par... |
683 684 685 686 687 688 689 |
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); |
479901ba1 HID: wiimote: Reg... |
690 691 692 693 694 |
ret = input_register_device(ext->mp_input); if (ret) { input_free_device(ext->mp_input); goto err_mp; } |
c1e51398a HID: wiimote: Add... |
695 696 |
ret = device_create_file(&wdata->hdev->dev, &dev_attr_extension); if (ret) |
479901ba1 HID: wiimote: Reg... |
697 |
goto err_dev; |
c1e51398a HID: wiimote: Add... |
698 |
|
cb99221ba HID: wiimote: Add... |
699 700 701 702 703 |
spin_lock_irqsave(&wdata->state.lock, flags); wdata->ext = ext; spin_unlock_irqrestore(&wdata->state.lock, flags); return 0; |
c1e51398a HID: wiimote: Add... |
704 |
|
479901ba1 HID: wiimote: Reg... |
705 706 707 708 709 |
err_dev: input_unregister_device(ext->mp_input); err_mp: input_unregister_device(ext->input); err_input: |
c1e51398a HID: wiimote: Add... |
710 711 |
kfree(ext); return ret; |
cb99221ba HID: wiimote: Add... |
712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 |
} /* 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); |
c1e51398a HID: wiimote: Add... |
734 |
device_remove_file(&wdata->hdev->dev, &dev_attr_extension); |
479901ba1 HID: wiimote: Reg... |
735 736 |
input_unregister_device(ext->mp_input); input_unregister_device(ext->input); |
c1e51398a HID: wiimote: Add... |
737 |
|
cb99221ba HID: wiimote: Add... |
738 739 740 |
cancel_work_sync(&ext->worker); kfree(ext); } |