// SPDX-License-Identifier: GPL-2.0-or-later /* * HID driver for Nintendo Wii / Wii U peripherals * Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com> */ /* */ #include <linux/completion.h> #include <linux/device.h> #include <linux/hid.h> #include <linux/input.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/spinlock.h> #include "hid-ids.h" #include "hid-wiimote.h" /* output queue handling */ static int wiimote_hid_send(struct hid_device *hdev, __u8 *buffer, size_t count) { __u8 *buf; int ret; if (!hdev->ll_driver->output_report) return -ENODEV; buf = kmemdup(buffer, count, GFP_KERNEL); if (!buf) return -ENOMEM; ret = hid_hw_output_report(hdev, buf, count); kfree(buf); return ret; } static void wiimote_queue_worker(struct work_struct *work) { struct wiimote_queue *queue = container_of(work, struct wiimote_queue, worker); struct wiimote_data *wdata = container_of(queue, struct wiimote_data, queue); unsigned long flags; int ret; spin_lock_irqsave(&wdata->queue.lock, flags); while (wdata->queue.head != wdata->queue.tail) { spin_unlock_irqrestore(&wdata->queue.lock, flags); ret = wiimote_hid_send(wdata->hdev, wdata->queue.outq[wdata->queue.tail].data, wdata->queue.outq[wdata->queue.tail].size); if (ret < 0) { spin_lock_irqsave(&wdata->state.lock, flags); wiimote_cmd_abort(wdata); spin_unlock_irqrestore(&wdata->state.lock, flags); } spin_lock_irqsave(&wdata->queue.lock, flags); wdata->queue.tail = (wdata->queue.tail + 1) % WIIMOTE_BUFSIZE; } spin_unlock_irqrestore(&wdata->queue.lock, flags); } static void wiimote_queue(struct wiimote_data *wdata, const __u8 *buffer, size_t count) { unsigned long flags; __u8 newhead; if (count > HID_MAX_BUFFER_SIZE) { hid_warn(wdata->hdev, "Sending too large output report\n"); spin_lock_irqsave(&wdata->queue.lock, flags); goto out_error; } /* * Copy new request into our output queue and check whether the * queue is full. If it is full, discard this request. * If it is empty we need to start a new worker that will * send out the buffer to the hid device. * If the queue is not empty, then there must be a worker * that is currently sending out our buffer and this worker * will reschedule itself until the queue is empty. */ spin_lock_irqsave(&wdata->queue.lock, flags); memcpy(wdata->queue.outq[wdata->queue.head].data, buffer, count); wdata->queue.outq[wdata->queue.head].size = count; newhead = (wdata->queue.head + 1) % WIIMOTE_BUFSIZE; if (wdata->queue.head == wdata->queue.tail) { wdata->queue.head = newhead; schedule_work(&wdata->queue.worker); } else if (newhead != wdata->queue.tail) { wdata->queue.head = newhead; } else { hid_warn(wdata->hdev, "Output queue is full"); goto out_error; } goto out_unlock; out_error: wiimote_cmd_abort(wdata); out_unlock: spin_unlock_irqrestore(&wdata->queue.lock, flags); } /* * This sets the rumble bit on the given output report if rumble is * currently enabled. * \cmd1 must point to the second byte in the output report => &cmd[1] * This must be called on nearly every output report before passing it * into the output queue! */ static inline void wiiproto_keep_rumble(struct wiimote_data *wdata, __u8 *cmd1) { if (wdata->state.flags & WIIPROTO_FLAG_RUMBLE) *cmd1 |= 0x01; } void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble) { __u8 cmd[2]; rumble = !!rumble; if (rumble == !!(wdata->state.flags & WIIPROTO_FLAG_RUMBLE)) return; if (rumble) wdata->state.flags |= WIIPROTO_FLAG_RUMBLE; else wdata->state.flags &= ~WIIPROTO_FLAG_RUMBLE; cmd[0] = WIIPROTO_REQ_RUMBLE; cmd[1] = 0; wiiproto_keep_rumble(wdata, &cmd[1]); wiimote_queue(wdata, cmd, sizeof(cmd)); } void wiiproto_req_leds(struct wiimote_data *wdata, int leds) { __u8 cmd[2]; leds &= WIIPROTO_FLAGS_LEDS; if ((wdata->state.flags & WIIPROTO_FLAGS_LEDS) == leds) return; wdata->state.flags = (wdata->state.flags & ~WIIPROTO_FLAGS_LEDS) | leds; cmd[0] = WIIPROTO_REQ_LED; cmd[1] = 0; if (leds & WIIPROTO_FLAG_LED1) cmd[1] |= 0x10; if (leds & WIIPROTO_FLAG_LED2) cmd[1] |= 0x20; if (leds & WIIPROTO_FLAG_LED3) cmd[1] |= 0x40; if (leds & WIIPROTO_FLAG_LED4) cmd[1] |= 0x80; wiiproto_keep_rumble(wdata, &cmd[1]); wiimote_queue(wdata, cmd, sizeof(cmd)); } /* * Check what peripherals of the wiimote are currently * active and select a proper DRM that supports all of * the requested data inputs. * * Not all combinations are actually supported. The following * combinations work only with limitations: * - IR cam in extended or full mode disables any data transmission * of extension controllers. There is no DRM mode that supports * extension bytes plus extended/full IR. * - IR cam with accelerometer and extension *_EXT8 is not supported. * However, all extensions that need *_EXT8 are devices that don't * support IR cameras. Hence, this shouldn't happen under normal * operation. * - *_EXT16 is only supported in combination with buttons and * accelerometer. No IR or similar can be active simultaneously. As * above, all modules that require it are mutually exclusive with * IR/etc. so this doesn't matter. */ static __u8 select_drm(struct wiimote_data *wdata) { __u8 ir = wdata->state.flags & WIIPROTO_FLAGS_IR; bool ext; ext = (wdata->state.flags & WIIPROTO_FLAG_EXT_USED) || (wdata->state.flags & WIIPROTO_FLAG_MP_USED); /* some 3rd-party balance-boards are hard-coded to KEE, *sigh* */ if (wdata->state.devtype == WIIMOTE_DEV_BALANCE_BOARD) { if (ext) return WIIPROTO_REQ_DRM_KEE; else return WIIPROTO_REQ_DRM_K; } if (ir == WIIPROTO_FLAG_IR_BASIC) { if (wdata->state.flags & WIIPROTO_FLAG_ACCEL) { /* GEN10 and ealier devices bind IR formats to DRMs. * Hence, we cannot use DRM_KAI here as it might be * bound to IR_EXT. Use DRM_KAIE unconditionally so we * work with all devices and our parsers can use the * fixed formats, too. */ return WIIPROTO_REQ_DRM_KAIE; } else { return WIIPROTO_REQ_DRM_KIE; } } else if (ir == WIIPROTO_FLAG_IR_EXT) { return WIIPROTO_REQ_DRM_KAI; } else if (ir == WIIPROTO_FLAG_IR_FULL) { return WIIPROTO_REQ_DRM_SKAI1; } else { if (wdata->state.flags & WIIPROTO_FLAG_ACCEL) { if (ext) return WIIPROTO_REQ_DRM_KAE; else return WIIPROTO_REQ_DRM_KA; } else { if (ext) return WIIPROTO_REQ_DRM_KEE; else return WIIPROTO_REQ_DRM_K; } } } void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm) { __u8 cmd[3]; if (wdata->state.flags & WIIPROTO_FLAG_DRM_LOCKED) drm = wdata->state.drm; else if (drm == WIIPROTO_REQ_NULL) drm = select_drm(wdata); cmd[0] = WIIPROTO_REQ_DRM; cmd[1] = 0; cmd[2] = drm; wdata->state.drm = drm; wiiproto_keep_rumble(wdata, &cmd[1]); wiimote_queue(wdata, cmd, sizeof(cmd)); } void wiiproto_req_status(struct wiimote_data *wdata) { __u8 cmd[2]; cmd[0] = WIIPROTO_REQ_SREQ; cmd[1] = 0; wiiproto_keep_rumble(wdata, &cmd[1]); wiimote_queue(wdata, cmd, sizeof(cmd)); } void wiiproto_req_accel(struct wiimote_data *wdata, __u8 accel) { accel = !!accel; if (accel == !!(wdata->state.flags & WIIPROTO_FLAG_ACCEL)) return; if (accel) wdata->state.flags |= WIIPROTO_FLAG_ACCEL; else wdata->state.flags &= ~WIIPROTO_FLAG_ACCEL; wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL); } void wiiproto_req_ir1(struct wiimote_data *wdata, __u8 flags) { __u8 cmd[2]; cmd[0] = WIIPROTO_REQ_IR1; cmd[1] = flags; wiiproto_keep_rumble(wdata, &cmd[1]); wiimote_queue(wdata, cmd, sizeof(cmd)); } void wiiproto_req_ir2(struct wiimote_data *wdata, __u8 flags) { __u8 cmd[2]; cmd[0] = WIIPROTO_REQ_IR2; cmd[1] = flags; wiiproto_keep_rumble(wdata, &cmd[1]); wiimote_queue(wdata, cmd, sizeof(cmd)); } #define wiiproto_req_wreg(wdata, os, buf, sz) \ wiiproto_req_wmem((wdata), false, (os), (buf), (sz)) #define wiiproto_req_weeprom(wdata, os, buf, sz) \ wiiproto_req_wmem((wdata), true, (os), (buf), (sz)) static void wiiproto_req_wmem(struct wiimote_data *wdata, bool eeprom, __u32 offset, const __u8 *buf, __u8 size) { __u8 cmd[22]; if (size > 16 || size == 0) { hid_warn(wdata->hdev, "Invalid length %d wmem request\n", size); return; } memset(cmd, 0, sizeof(cmd)); cmd[0] = WIIPROTO_REQ_WMEM; cmd[2] = (offset >> 16) & 0xff; cmd[3] = (offset >> 8) & 0xff; cmd[4] = offset & 0xff; cmd[5] = size; memcpy(&cmd[6], buf, size); if (!eeprom) cmd[1] |= 0x04; wiiproto_keep_rumble(wdata, &cmd[1]); wiimote_queue(wdata, cmd, sizeof(cmd)); } void wiiproto_req_rmem(struct wiimote_data *wdata, bool eeprom, __u32 offset, __u16 size) { __u8 cmd[7]; if (size == 0) { hid_warn(wdata->hdev, "Invalid length %d rmem request\n", size); return; } cmd[0] = WIIPROTO_REQ_RMEM; cmd[1] = 0; cmd[2] = (offset >> 16) & 0xff; cmd[3] = (offset >> 8) & 0xff; cmd[4] = offset & 0xff; cmd[5] = (size >> 8) & 0xff; cmd[6] = size & 0xff; if (!eeprom) cmd[1] |= 0x04; wiiproto_keep_rumble(wdata, &cmd[1]); wiimote_queue(wdata, cmd, sizeof(cmd)); } /* requries the cmd-mutex to be held */ int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset, const __u8 *wmem, __u8 size) { unsigned long flags; int ret; spin_lock_irqsave(&wdata->state.lock, flags); wiimote_cmd_set(wdata, WIIPROTO_REQ_WMEM, 0); wiiproto_req_wreg(wdata, offset, wmem, size); spin_unlock_irqrestore(&wdata->state.lock, flags); ret = wiimote_cmd_wait(wdata); if (!ret && wdata->state.cmd_err) ret = -EIO; return ret; } /* requries the cmd-mutex to be held */ ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset, __u8 *rmem, __u8 size) { unsigned long flags; ssize_t ret; spin_lock_irqsave(&wdata->state.lock, flags); wdata->state.cmd_read_size = size; wdata->state.cmd_read_buf = rmem; wiimote_cmd_set(wdata, WIIPROTO_REQ_RMEM, offset & 0xffff); wiiproto_req_rreg(wdata, offset, size); spin_unlock_irqrestore(&wdata->state.lock, flags); ret = wiimote_cmd_wait(wdata); spin_lock_irqsave(&wdata->state.lock, flags); wdata->state.cmd_read_buf = NULL; spin_unlock_irqrestore(&wdata->state.lock, flags); if (!ret) { if (wdata->state.cmd_read_size == 0) ret = -EIO; else ret = wdata->state.cmd_read_size; } return ret; } /* requires the cmd-mutex to be held */ static int wiimote_cmd_init_ext(struct wiimote_data *wdata) { __u8 wmem; int ret; /* initialize extension */ wmem = 0x55; ret = wiimote_cmd_write(wdata, 0xa400f0, &wmem, sizeof(wmem)); if (ret) return ret; /* disable default encryption */ wmem = 0x0; ret = wiimote_cmd_write(wdata, 0xa400fb, &wmem, sizeof(wmem)); if (ret) return ret; return 0; } /* requires the cmd-mutex to be held */ static __u8 wiimote_cmd_read_ext(struct wiimote_data *wdata, __u8 *rmem) { int ret; /* read extension ID */ ret = wiimote_cmd_read(wdata, 0xa400fa, rmem, 6); if (ret != 6) return WIIMOTE_EXT_NONE; hid_dbg(wdata->hdev, "extension ID: %6phC\n", rmem); if (rmem[0] == 0xff && rmem[1] == 0xff && rmem[2] == 0xff && rmem[3] == 0xff && rmem[4] == 0xff && rmem[5] == 0xff) return WIIMOTE_EXT_NONE; if (rmem[4] == 0x00 && rmem[5] == 0x00) return WIIMOTE_EXT_NUNCHUK; if (rmem[4] == 0x01 && rmem[5] == 0x01) return WIIMOTE_EXT_CLASSIC_CONTROLLER; if (rmem[4] == 0x04 && rmem[5] == 0x02) return WIIMOTE_EXT_BALANCE_BOARD; if (rmem[4] == 0x01 && rmem[5] == 0x20) return WIIMOTE_EXT_PRO_CONTROLLER; if (rmem[0] == 0x01 && rmem[1] == 0x00 && rmem[4] == 0x01 && rmem[5] == 0x03) return WIIMOTE_EXT_DRUMS; if (rmem[0] == 0x00 && rmem[1] == 0x00 && rmem[4] == 0x01 && rmem[5] == 0x03) return WIIMOTE_EXT_GUITAR; return WIIMOTE_EXT_UNKNOWN; } /* requires the cmd-mutex to be held */ static int wiimote_cmd_init_mp(struct wiimote_data *wdata) { __u8 wmem; int ret; /* initialize MP */ wmem = 0x55; ret = wiimote_cmd_write(wdata, 0xa600f0, &wmem, sizeof(wmem)); if (ret) return ret; /* disable default encryption */ wmem = 0x0; ret = wiimote_cmd_write(wdata, 0xa600fb, &wmem, sizeof(wmem)); if (ret) return ret; return 0; } /* requires the cmd-mutex to be held */ static bool wiimote_cmd_map_mp(struct wiimote_data *wdata, __u8 exttype) { __u8 wmem; /* map MP with correct pass-through mode */ switch (exttype) { case WIIMOTE_EXT_CLASSIC_CONTROLLER: case WIIMOTE_EXT_DRUMS: case WIIMOTE_EXT_GUITAR: wmem = 0x07; break; case WIIMOTE_EXT_NUNCHUK: wmem = 0x05; break; default: wmem = 0x04; break; } return wiimote_cmd_write(wdata, 0xa600fe, &wmem, sizeof(wmem)); } /* requires the cmd-mutex to be held */ static bool wiimote_cmd_read_mp(struct wiimote_data *wdata, __u8 *rmem) { int ret; /* read motion plus ID */ ret = wiimote_cmd_read(wdata, 0xa600fa, rmem, 6); if (ret != 6) return false; hid_dbg(wdata->hdev, "motion plus ID: %6phC\n", rmem); if (rmem[5] == 0x05) return true; hid_info(wdata->hdev, "unknown motion plus ID: %6phC\n", rmem); return false; } /* requires the cmd-mutex to be held */ static __u8 wiimote_cmd_read_mp_mapped(struct wiimote_data *wdata) { int ret; __u8 rmem[6]; /* read motion plus ID */ ret = wiimote_cmd_read(wdata, 0xa400fa, rmem, 6); if (ret != 6) return WIIMOTE_MP_NONE; hid_dbg(wdata->hdev, "mapped motion plus ID: %6phC\n", rmem); if (rmem[0] == 0xff && rmem[1] == 0xff && rmem[2] == 0xff && rmem[3] == 0xff && rmem[4] == 0xff && rmem[5] == 0xff) return WIIMOTE_MP_NONE; if (rmem[4] == 0x04 && rmem[5] == 0x05) return WIIMOTE_MP_SINGLE; else if (rmem[4] == 0x05 && rmem[5] == 0x05) return WIIMOTE_MP_PASSTHROUGH_NUNCHUK; else if (rmem[4] == 0x07 && rmem[5] == 0x05) return WIIMOTE_MP_PASSTHROUGH_CLASSIC; return WIIMOTE_MP_UNKNOWN; } /* device module handling */ static const __u8 * const wiimote_devtype_mods[WIIMOTE_DEV_NUM] = { [WIIMOTE_DEV_PENDING] = (const __u8[]){ WIIMOD_NULL, }, [WIIMOTE_DEV_UNKNOWN] = (const __u8[]){ WIIMOD_NO_MP, WIIMOD_NULL, }, [WIIMOTE_DEV_GENERIC] = (const __u8[]){ WIIMOD_KEYS, WIIMOD_RUMBLE, WIIMOD_BATTERY, WIIMOD_LED1, WIIMOD_LED2, WIIMOD_LED3, WIIMOD_LED4, WIIMOD_ACCEL, WIIMOD_IR, WIIMOD_NULL, }, [WIIMOTE_DEV_GEN10] = (const __u8[]){ WIIMOD_KEYS, WIIMOD_RUMBLE, WIIMOD_BATTERY, WIIMOD_LED1, WIIMOD_LED2, WIIMOD_LED3, WIIMOD_LED4, WIIMOD_ACCEL, WIIMOD_IR, WIIMOD_NULL, }, [WIIMOTE_DEV_GEN20] = (const __u8[]){ WIIMOD_KEYS, WIIMOD_RUMBLE, WIIMOD_BATTERY, WIIMOD_LED1, WIIMOD_LED2, WIIMOD_LED3, WIIMOD_LED4, WIIMOD_ACCEL, WIIMOD_IR, WIIMOD_BUILTIN_MP, WIIMOD_NULL, }, [WIIMOTE_DEV_BALANCE_BOARD] = (const __u8[]) { WIIMOD_BATTERY, WIIMOD_LED1, WIIMOD_NO_MP, WIIMOD_NULL, }, [WIIMOTE_DEV_PRO_CONTROLLER] = (const __u8[]) { WIIMOD_BATTERY, WIIMOD_LED1, WIIMOD_LED2, WIIMOD_LED3, WIIMOD_LED4, WIIMOD_NO_MP, WIIMOD_NULL, }, }; static void wiimote_modules_load(struct wiimote_data *wdata, unsigned int devtype) { bool need_input = false; const __u8 *mods, *iter; const struct wiimod_ops *ops; int ret; mods = wiimote_devtype_mods[devtype]; for (iter = mods; *iter != WIIMOD_NULL; ++iter) { if (wiimod_table[*iter]->flags & WIIMOD_FLAG_INPUT) { need_input = true; break; } } if (need_input) { wdata->input = input_allocate_device(); if (!wdata->input) return; input_set_drvdata(wdata->input, wdata); wdata->input->dev.parent = &wdata->hdev->dev; wdata->input->id.bustype = wdata->hdev->bus; wdata->input->id.vendor = wdata->hdev->vendor; wdata->input->id.product = wdata->hdev->product; wdata->input->id.version = wdata->hdev->version; wdata->input->name = WIIMOTE_NAME; } for (iter = mods; *iter != WIIMOD_NULL; ++iter) { ops = wiimod_table[*iter]; if (!ops->probe) continue; ret = ops->probe(ops, wdata); if (ret) goto error; } if (wdata->input) { ret = input_register_device(wdata->input); if (ret) goto error; } spin_lock_irq(&wdata->state.lock); wdata->state.devtype = devtype; spin_unlock_irq(&wdata->state.lock); return; error: for ( ; iter-- != mods; ) { ops = wiimod_table[*iter]; if (ops->remove) ops->remove(ops, wdata); } if (wdata->input) { input_free_device(wdata->input); wdata->input = NULL; } } static void wiimote_modules_unload(struct wiimote_data *wdata) { const __u8 *mods, *iter; const struct wiimod_ops *ops; unsigned long flags; mods = wiimote_devtype_mods[wdata->state.devtype]; spin_lock_irqsave(&wdata->state.lock, flags); wdata->state.devtype = WIIMOTE_DEV_UNKNOWN; spin_unlock_irqrestore(&wdata->state.lock, flags); /* find end of list */ for (iter = mods; *iter != WIIMOD_NULL; ++iter) /* empty */ ; if (wdata->input) { input_get_device(wdata->input); input_unregister_device(wdata->input); } for ( ; iter-- != mods; ) { ops = wiimod_table[*iter]; if (ops->remove) ops->remove(ops, wdata); } if (wdata->input) { input_put_device(wdata->input); wdata->input = NULL; } } /* device extension handling */ static void wiimote_ext_load(struct wiimote_data *wdata, unsigned int ext) { unsigned long flags; const struct wiimod_ops *ops; int ret; ops = wiimod_ext_table[ext]; if (ops->probe) { ret = ops->probe(ops, wdata); if (ret) ext = WIIMOTE_EXT_UNKNOWN; } spin_lock_irqsave(&wdata->state.lock, flags); wdata->state.exttype = ext; spin_unlock_irqrestore(&wdata->state.lock, flags); } static void wiimote_ext_unload(struct wiimote_data *wdata) { unsigned long flags; const struct wiimod_ops *ops; ops = wiimod_ext_table[wdata->state.exttype]; spin_lock_irqsave(&wdata->state.lock, flags); wdata->state.exttype = WIIMOTE_EXT_UNKNOWN; wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED; spin_unlock_irqrestore(&wdata->state.lock, flags); if (ops->remove) ops->remove(ops, wdata); } static void wiimote_mp_load(struct wiimote_data *wdata) { unsigned long flags; const struct wiimod_ops *ops; int ret; __u8 mode = 2; ops = &wiimod_mp; if (ops->probe) { ret = ops->probe(ops, wdata); if (ret) mode = 1; } spin_lock_irqsave(&wdata->state.lock, flags); wdata->state.mp = mode; spin_unlock_irqrestore(&wdata->state.lock, flags); } static void wiimote_mp_unload(struct wiimote_data *wdata) { unsigned long flags; const struct wiimod_ops *ops; if (wdata->state.mp < 2) return; ops = &wiimod_mp; spin_lock_irqsave(&wdata->state.lock, flags); wdata->state.mp = 0; wdata->state.flags &= ~WIIPROTO_FLAG_MP_USED; spin_unlock_irqrestore(&wdata->state.lock, flags); if (ops->remove) ops->remove(ops, wdata); } /* device (re-)initialization and detection */ static const char *wiimote_devtype_names[WIIMOTE_DEV_NUM] = { [WIIMOTE_DEV_PENDING] = "Pending", [WIIMOTE_DEV_UNKNOWN] = "Unknown", [WIIMOTE_DEV_GENERIC] = "Generic", [WIIMOTE_DEV_GEN10] = "Nintendo Wii Remote (Gen 1)", [WIIMOTE_DEV_GEN20] = "Nintendo Wii Remote Plus (Gen 2)", [WIIMOTE_DEV_BALANCE_BOARD] = "Nintendo Wii Balance Board", [WIIMOTE_DEV_PRO_CONTROLLER] = "Nintendo Wii U Pro Controller", }; /* Try to guess the device type based on all collected information. We * first try to detect by static extension types, then VID/PID and the * device name. If we cannot detect the device, we use * WIIMOTE_DEV_GENERIC so all modules will get probed on the device. */ static void wiimote_init_set_type(struct wiimote_data *wdata, __u8 exttype) { __u8 devtype = WIIMOTE_DEV_GENERIC; __u16 vendor, product; const char *name; vendor = wdata->hdev->vendor; product = wdata->hdev->product; name = wdata->hdev->name; if (exttype == WIIMOTE_EXT_BALANCE_BOARD) { devtype = WIIMOTE_DEV_BALANCE_BOARD; goto done; } else if (exttype == WIIMOTE_EXT_PRO_CONTROLLER) { devtype = WIIMOTE_DEV_PRO_CONTROLLER; goto done; } if (!strcmp(name, "Nintendo RVL-CNT-01")) { devtype = WIIMOTE_DEV_GEN10; goto done; } else if (!strcmp(name, "Nintendo RVL-CNT-01-TR")) { devtype = WIIMOTE_DEV_GEN20; goto done; } else if (!strcmp(name, "Nintendo RVL-WBC-01")) { devtype = WIIMOTE_DEV_BALANCE_BOARD; goto done; } else if (!strcmp(name, "Nintendo RVL-CNT-01-UC")) { devtype = WIIMOTE_DEV_PRO_CONTROLLER; goto done; } if (vendor == USB_VENDOR_ID_NINTENDO) { if (product == USB_DEVICE_ID_NINTENDO_WIIMOTE) { devtype = WIIMOTE_DEV_GEN10; goto done; } else if (product == USB_DEVICE_ID_NINTENDO_WIIMOTE2) { devtype = WIIMOTE_DEV_GEN20; goto done; } } done: if (devtype == WIIMOTE_DEV_GENERIC) hid_info(wdata->hdev, "cannot detect device; NAME: %s VID: %04x PID: %04x EXT: %04x\n", name, vendor, product, exttype); else hid_info(wdata->hdev, "detected device: %s\n", wiimote_devtype_names[devtype]); wiimote_modules_load(wdata, devtype); } static void wiimote_init_detect(struct wiimote_data *wdata) { __u8 exttype = WIIMOTE_EXT_NONE, extdata[6]; bool ext; int ret; wiimote_cmd_acquire_noint(wdata); spin_lock_irq(&wdata->state.lock); wdata->state.devtype = WIIMOTE_DEV_UNKNOWN; wiimote_cmd_set(wdata, WIIPROTO_REQ_SREQ, 0); wiiproto_req_status(wdata); spin_unlock_irq(&wdata->state.lock); ret = wiimote_cmd_wait_noint(wdata); if (ret) goto out_release; spin_lock_irq(&wdata->state.lock); ext = wdata->state.flags & WIIPROTO_FLAG_EXT_PLUGGED; spin_unlock_irq(&wdata->state.lock); if (!ext) goto out_release; wiimote_cmd_init_ext(wdata); exttype = wiimote_cmd_read_ext(wdata, extdata); out_release: wiimote_cmd_release(wdata); wiimote_init_set_type(wdata, exttype); /* schedule MP timer */ spin_lock_irq(&wdata->state.lock); if (!(wdata->state.flags & WIIPROTO_FLAG_BUILTIN_MP) && !(wdata->state.flags & WIIPROTO_FLAG_NO_MP)) mod_timer(&wdata->timer, jiffies + HZ * 4); spin_unlock_irq(&wdata->state.lock); } /* * MP hotplug events are not generated by the wiimote. Therefore, we need * polling to detect it. We use a 4s interval for polling MP registers. This * seems reasonable considering applications can trigger it manually via * sysfs requests. */ static void wiimote_init_poll_mp(struct wiimote_data *wdata) { bool mp; __u8 mpdata[6]; wiimote_cmd_acquire_noint(wdata); wiimote_cmd_init_mp(wdata); mp = wiimote_cmd_read_mp(wdata, mpdata); wiimote_cmd_release(wdata); /* load/unload MP module if it changed */ if (mp) { if (!wdata->state.mp) { hid_info(wdata->hdev, "detected extension: Nintendo Wii Motion Plus\n"); wiimote_mp_load(wdata); } } else if (wdata->state.mp) { wiimote_mp_unload(wdata); } mod_timer(&wdata->timer, jiffies + HZ * 4); } /* * Check whether the wiimote is in the expected state. The extension registers * may change during hotplug and initialization so we might get hotplug events * that we caused by remapping some memory. * We use some heuristics here to check known states. If the wiimote is in the * expected state, we can ignore the hotplug event. * * Returns "true" if the device is in expected state, "false" if we should * redo hotplug handling and extension initialization. */ static bool wiimote_init_check(struct wiimote_data *wdata) { __u32 flags; __u8 type, data[6]; bool ret, poll_mp; spin_lock_irq(&wdata->state.lock); flags = wdata->state.flags; spin_unlock_irq(&wdata->state.lock); wiimote_cmd_acquire_noint(wdata); /* If MP is used and active, but the extension is not, we expect: * read_mp_mapped() == WIIMOTE_MP_SINGLE * state.flags == !EXT_ACTIVE && !MP_PLUGGED && MP_ACTIVE * We do not check EXT_PLUGGED because it might change during * initialization of MP without extensions. * - If MP is unplugged/replugged, read_mp_mapped() fails * - If EXT is plugged, MP_PLUGGED will get set */ if (wdata->state.exttype == WIIMOTE_EXT_NONE && wdata->state.mp > 0 && (flags & WIIPROTO_FLAG_MP_USED)) { type = wiimote_cmd_read_mp_mapped(wdata); ret = type == WIIMOTE_MP_SINGLE; spin_lock_irq(&wdata->state.lock); ret = ret && !(wdata->state.flags & WIIPROTO_FLAG_EXT_ACTIVE); ret = ret && !(wdata->state.flags & WIIPROTO_FLAG_MP_PLUGGED); ret = ret && (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE); spin_unlock_irq(&wdata->state.lock); if (!ret) hid_dbg(wdata->hdev, "state left: !EXT && MP\n"); /* while MP is mapped, we get EXT_PLUGGED events */ poll_mp = false; goto out_release; } /* If MP is unused, but the extension port is used, we expect: * read_ext == state.exttype * state.flags == !MP_ACTIVE && EXT_ACTIVE * - If MP is plugged/unplugged, our timer detects it * - If EXT is unplugged/replugged, EXT_ACTIVE will become unset */ if (!(flags & WIIPROTO_FLAG_MP_USED) && wdata->state.exttype != WIIMOTE_EXT_NONE) { type = wiimote_cmd_read_ext(wdata, data); ret = type == wdata->state.exttype; spin_lock_irq(&wdata->state.lock); ret = ret && !(wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE); ret = ret && (wdata->state.flags & WIIPROTO_FLAG_EXT_ACTIVE); spin_unlock_irq(&wdata->state.lock); if (!ret) hid_dbg(wdata->hdev, "state left: EXT && !MP\n"); /* poll MP for hotplug events */ poll_mp = true; goto out_release; } /* If neither MP nor an extension are used, we expect: * read_ext() == WIIMOTE_EXT_NONE * state.flags == !MP_ACTIVE && !EXT_ACTIVE && !EXT_PLUGGED * No need to perform any action in this case as everything is * disabled already. * - If MP is plugged/unplugged, our timer detects it * - If EXT is plugged, EXT_PLUGGED will be set */ if (!(flags & WIIPROTO_FLAG_MP_USED) && wdata->state.exttype == WIIMOTE_EXT_NONE) { type = wiimote_cmd_read_ext(wdata, data); ret = type == wdata->state.exttype; spin_lock_irq(&wdata->state.lock); ret = ret && !(wdata->state.flags & WIIPROTO_FLAG_EXT_ACTIVE); ret = ret && !(wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE); ret = ret && !(wdata->state.flags & WIIPROTO_FLAG_EXT_PLUGGED); spin_unlock_irq(&wdata->state.lock); if (!ret) hid_dbg(wdata->hdev, "state left: !EXT && !MP\n"); /* poll MP for hotplug events */ poll_mp = true; goto out_release; } /* The trickiest part is if both EXT and MP are active. We cannot read * the EXT ID, anymore, because MP is mapped over it. However, we use * a handy trick here: * - EXT_ACTIVE is unset whenever !MP_PLUGGED is sent * MP_PLUGGED might be re-sent again before we are scheduled, but * EXT_ACTIVE will stay unset. * So it is enough to check for mp_mapped() and MP_ACTIVE and * EXT_ACTIVE. EXT_PLUGGED is a sanity check. */ if (wdata->state.exttype != WIIMOTE_EXT_NONE && wdata->state.mp > 0 && (flags & WIIPROTO_FLAG_MP_USED)) { type = wiimote_cmd_read_mp_mapped(wdata); ret = type != WIIMOTE_MP_NONE; ret = ret && type != WIIMOTE_MP_UNKNOWN; ret = ret && type != WIIMOTE_MP_SINGLE; spin_lock_irq(&wdata->state.lock); ret = ret && (wdata->state.flags & WIIPROTO_FLAG_EXT_PLUGGED); ret = ret && (wdata->state.flags & WIIPROTO_FLAG_EXT_ACTIVE); ret = ret && (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE); spin_unlock_irq(&wdata->state.lock); if (!ret) hid_dbg(wdata->hdev, "state left: EXT && MP\n"); /* while MP is mapped, we get EXT_PLUGGED events */ poll_mp = false; goto out_release; } /* unknown state */ ret = false; out_release: wiimote_cmd_release(wdata); /* only poll for MP if requested and if state didn't change */ if (ret && poll_mp && !(flags & WIIPROTO_FLAG_BUILTIN_MP) && !(flags & WIIPROTO_FLAG_NO_MP)) wiimote_init_poll_mp(wdata); return ret; } static const char *wiimote_exttype_names[WIIMOTE_EXT_NUM] = { [WIIMOTE_EXT_NONE] = "None", [WIIMOTE_EXT_UNKNOWN] = "Unknown", [WIIMOTE_EXT_NUNCHUK] = "Nintendo Wii Nunchuk", [WIIMOTE_EXT_CLASSIC_CONTROLLER] = "Nintendo Wii Classic Controller", [WIIMOTE_EXT_BALANCE_BOARD] = "Nintendo Wii Balance Board", [WIIMOTE_EXT_PRO_CONTROLLER] = "Nintendo Wii U Pro Controller", [WIIMOTE_EXT_DRUMS] = "Nintendo Wii Drums", [WIIMOTE_EXT_GUITAR] = "Nintendo Wii Guitar", }; /* * Handle hotplug events * If we receive an hotplug event and the device-check failed, we deinitialize * the extension ports, re-read all extension IDs and set the device into * the desired state. This involves mapping MP into the main extension * registers, setting up extension passthrough modes and initializing the * requested extensions. */ static void wiimote_init_hotplug(struct wiimote_data *wdata) { __u8 exttype, extdata[6], mpdata[6]; __u32 flags; bool mp; hid_dbg(wdata->hdev, "detect extensions..\n"); wiimote_cmd_acquire_noint(wdata); spin_lock_irq(&wdata->state.lock); /* get state snapshot that we will then work on */ flags = wdata->state.flags; /* disable event forwarding temporarily */ wdata->state.flags &= ~WIIPROTO_FLAG_EXT_ACTIVE; wdata->state.flags &= ~WIIPROTO_FLAG_MP_ACTIVE; spin_unlock_irq(&wdata->state.lock); /* init extension and MP (deactivates current extension or MP) */ wiimote_cmd_init_ext(wdata); if (flags & WIIPROTO_FLAG_NO_MP) { mp = false; } else { wiimote_cmd_init_mp(wdata); mp = wiimote_cmd_read_mp(wdata, mpdata); } exttype = wiimote_cmd_read_ext(wdata, extdata); wiimote_cmd_release(wdata); /* load/unload extension module if it changed */ if (exttype != wdata->state.exttype) { /* unload previous extension */ wiimote_ext_unload(wdata); if (exttype == WIIMOTE_EXT_UNKNOWN) { hid_info(wdata->hdev, "cannot detect extension; %6phC\n", extdata); } else if (exttype == WIIMOTE_EXT_NONE) { spin_lock_irq(&wdata->state.lock); wdata->state.exttype = WIIMOTE_EXT_NONE; spin_unlock_irq(&wdata->state.lock); } else { hid_info(wdata->hdev, "detected extension: %s\n", wiimote_exttype_names[exttype]); /* try loading new extension */ wiimote_ext_load(wdata, exttype); } } /* load/unload MP module if it changed */ if (mp) { if (!wdata->state.mp) { hid_info(wdata->hdev, "detected extension: Nintendo Wii Motion Plus\n"); wiimote_mp_load(wdata); } } else if (wdata->state.mp) { wiimote_mp_unload(wdata); } /* if MP is not used, do not map or activate it */ if (!(flags & WIIPROTO_FLAG_MP_USED)) mp = false; /* map MP into main extension registers if used */ if (mp) { wiimote_cmd_acquire_noint(wdata); wiimote_cmd_map_mp(wdata, exttype); wiimote_cmd_release(wdata); /* delete MP hotplug timer */ del_timer_sync(&wdata->timer); } else { /* reschedule MP hotplug timer */ if (!(flags & WIIPROTO_FLAG_BUILTIN_MP) && !(flags & WIIPROTO_FLAG_NO_MP)) mod_timer(&wdata->timer, jiffies + HZ * 4); } spin_lock_irq(&wdata->state.lock); /* enable data forwarding again and set expected hotplug state */ if (mp) { wdata->state.flags |= WIIPROTO_FLAG_MP_ACTIVE; if (wdata->state.exttype == WIIMOTE_EXT_NONE) { wdata->state.flags &= ~WIIPROTO_FLAG_EXT_PLUGGED; wdata->state.flags &= ~WIIPROTO_FLAG_MP_PLUGGED; } else { wdata->state.flags &= ~WIIPROTO_FLAG_EXT_PLUGGED; wdata->state.flags |= WIIPROTO_FLAG_MP_PLUGGED; wdata->state.flags |= WIIPROTO_FLAG_EXT_ACTIVE; } } else if (wdata->state.exttype != WIIMOTE_EXT_NONE) { wdata->state.flags |= WIIPROTO_FLAG_EXT_ACTIVE; } /* request status report for hotplug state updates */ wiiproto_req_status(wdata); spin_unlock_irq(&wdata->state.lock); hid_dbg(wdata->hdev, "detected extensions: MP: %d EXT: %d\n", wdata->state.mp, wdata->state.exttype); } static void wiimote_init_worker(struct work_struct *work) { struct wiimote_data *wdata = container_of(work, struct wiimote_data, init_worker); bool changed = false; if (wdata->state.devtype == WIIMOTE_DEV_PENDING) { wiimote_init_detect(wdata); changed = true; } if (changed || !wiimote_init_check(wdata)) wiimote_init_hotplug(wdata); if (changed) kobject_uevent(&wdata->hdev->dev.kobj, KOBJ_CHANGE); } void __wiimote_schedule(struct wiimote_data *wdata) { if (!(wdata->state.flags & WIIPROTO_FLAG_EXITING)) schedule_work(&wdata->init_worker); } static void wiimote_schedule(struct wiimote_data *wdata) { unsigned long flags; spin_lock_irqsave(&wdata->state.lock, flags); __wiimote_schedule(wdata); spin_unlock_irqrestore(&wdata->state.lock, flags); } static void wiimote_init_timeout(struct timer_list *t) { struct wiimote_data *wdata = from_timer(wdata, t, timer); wiimote_schedule(wdata); } /* protocol handlers */ static void handler_keys(struct wiimote_data *wdata, const __u8 *payload) { const __u8 *iter, *mods; const struct wiimod_ops *ops; ops = wiimod_ext_table[wdata->state.exttype]; if (ops->in_keys) { ops->in_keys(wdata, payload); return; } mods = wiimote_devtype_mods[wdata->state.devtype]; for (iter = mods; *iter != WIIMOD_NULL; ++iter) { ops = wiimod_table[*iter]; if (ops->in_keys) { ops->in_keys(wdata, payload); break; } } } static void handler_accel(struct wiimote_data *wdata, const __u8 *payload) { const __u8 *iter, *mods; const struct wiimod_ops *ops; ops = wiimod_ext_table[wdata->state.exttype]; if (ops->in_accel) { ops->in_accel(wdata, payload); return; } mods = wiimote_devtype_mods[wdata->state.devtype]; for (iter = mods; *iter != WIIMOD_NULL; ++iter) { ops = wiimod_table[*iter]; if (ops->in_accel) { ops->in_accel(wdata, payload); break; } } } static bool valid_ext_handler(const struct wiimod_ops *ops, size_t len) { if (!ops->in_ext) return false; if ((ops->flags & WIIMOD_FLAG_EXT8) && len < 8) return false; if ((ops->flags & WIIMOD_FLAG_EXT16) && len < 16) return false; return true; } static void handler_ext(struct wiimote_data *wdata, const __u8 *payload, size_t len) { static const __u8 invalid[21] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; const __u8 *iter, *mods; const struct wiimod_ops *ops; bool is_mp; if (len > 21) len = 21; if (len < 6 || !memcmp(payload, invalid, len)) return; /* if MP is active, track MP slot hotplugging */ if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) { /* this bit is set for invalid events (eg. during hotplug) */ if (payload[5] & 0x01) return; if (payload[4] & 0x01) { if (!(wdata->state.flags & WIIPROTO_FLAG_MP_PLUGGED)) { hid_dbg(wdata->hdev, "MP hotplug: 1\n"); wdata->state.flags |= WIIPROTO_FLAG_MP_PLUGGED; __wiimote_schedule(wdata); } } else { if (wdata->state.flags & WIIPROTO_FLAG_MP_PLUGGED) { hid_dbg(wdata->hdev, "MP hotplug: 0\n"); wdata->state.flags &= ~WIIPROTO_FLAG_MP_PLUGGED; wdata->state.flags &= ~WIIPROTO_FLAG_EXT_ACTIVE; __wiimote_schedule(wdata); } } /* detect MP data that is sent interleaved with EXT data */ is_mp = payload[5] & 0x02; } else { is_mp = false; } /* ignore EXT events if no extension is active */ if (!(wdata->state.flags & WIIPROTO_FLAG_EXT_ACTIVE) && !is_mp) return; /* try forwarding to extension handler, first */ ops = wiimod_ext_table[wdata->state.exttype]; if (is_mp && ops->in_mp) { ops->in_mp(wdata, payload); return; } else if (!is_mp && valid_ext_handler(ops, len)) { ops->in_ext(wdata, payload); return; } /* try forwarding to MP handler */ ops = &wiimod_mp; if (is_mp && ops->in_mp) { ops->in_mp(wdata, payload); return; } else if (!is_mp && valid_ext_handler(ops, len)) { ops->in_ext(wdata, payload); return; } /* try forwarding to loaded modules */ mods = wiimote_devtype_mods[wdata->state.devtype]; for (iter = mods; *iter != WIIMOD_NULL; ++iter) { ops = wiimod_table[*iter]; if (is_mp && ops->in_mp) { ops->in_mp(wdata, payload); return; } else if (!is_mp && valid_ext_handler(ops, len)) { ops->in_ext(wdata, payload); return; } } } #define ir_to_input0(wdata, ir, packed) handler_ir((wdata), (ir), (packed), 0) #define ir_to_input1(wdata, ir, packed) handler_ir((wdata), (ir), (packed), 1) #define ir_to_input2(wdata, ir, packed) handler_ir((wdata), (ir), (packed), 2) #define ir_to_input3(wdata, ir, packed) handler_ir((wdata), (ir), (packed), 3) static void handler_ir(struct wiimote_data *wdata, const __u8 *payload, bool packed, unsigned int id) { const __u8 *iter, *mods; const struct wiimod_ops *ops; ops = wiimod_ext_table[wdata->state.exttype]; if (ops->in_ir) { ops->in_ir(wdata, payload, packed, id); return; } mods = wiimote_devtype_mods[wdata->state.devtype]; for (iter = mods; *iter != WIIMOD_NULL; ++iter) { ops = wiimod_table[*iter]; if (ops->in_ir) { ops->in_ir(wdata, payload, packed, id); break; } } } /* reduced status report with "BB BB" key data only */ static void handler_status_K(struct wiimote_data *wdata, const __u8 *payload) { handler_keys(wdata, payload); /* on status reports the drm is reset so we need to resend the drm */ wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL); } /* extended status report with "BB BB LF 00 00 VV" data */ static void handler_status(struct wiimote_data *wdata, const __u8 *payload) { handler_status_K(wdata, payload); /* update extension status */ if (payload[2] & 0x02) { if (!(wdata->state.flags & WIIPROTO_FLAG_EXT_PLUGGED)) { hid_dbg(wdata->hdev, "EXT hotplug: 1\n"); wdata->state.flags |= WIIPROTO_FLAG_EXT_PLUGGED; __wiimote_schedule(wdata); } } else { if (wdata->state.flags & WIIPROTO_FLAG_EXT_PLUGGED) { hid_dbg(wdata->hdev, "EXT hotplug: 0\n"); wdata->state.flags &= ~WIIPROTO_FLAG_EXT_PLUGGED; wdata->state.flags &= ~WIIPROTO_FLAG_MP_PLUGGED; wdata->state.flags &= ~WIIPROTO_FLAG_EXT_ACTIVE; wdata->state.flags &= ~WIIPROTO_FLAG_MP_ACTIVE; __wiimote_schedule(wdata); } } wdata->state.cmd_battery = payload[5]; if (wiimote_cmd_pending(wdata, WIIPROTO_REQ_SREQ, 0)) wiimote_cmd_complete(wdata); } /* reduced generic report with "BB BB" key data only */ static void handler_generic_K(struct wiimote_data *wdata, const __u8 *payload) { handler_keys(wdata, payload); } static void handler_data(struct wiimote_data *wdata, const __u8 *payload) { __u16 offset = payload[3] << 8 | payload[4]; __u8 size = (payload[2] >> 4) + 1; __u8 err = payload[2] & 0x0f; handler_keys(wdata, payload); if (wiimote_cmd_pending(wdata, WIIPROTO_REQ_RMEM, offset)) { if (err) size = 0; else if (size > wdata->state.cmd_read_size) size = wdata->state.cmd_read_size; wdata->state.cmd_read_size = size; if (wdata->state.cmd_read_buf) memcpy(wdata->state.cmd_read_buf, &payload[5], size); wiimote_cmd_complete(wdata); } } static void handler_return(struct wiimote_data *wdata, const __u8 *payload) { __u8 err = payload[3]; __u8 cmd = payload[2]; handler_keys(wdata, payload); if (wiimote_cmd_pending(wdata, cmd, 0)) { wdata->state.cmd_err = err; wiimote_cmd_complete(wdata); } else if (err) { hid_warn(wdata->hdev, "Remote error %hhu on req %hhu\n", err, cmd); } } static void handler_drm_KA(struct wiimote_data *wdata, const __u8 *payload) { handler_keys(wdata, payload); handler_accel(wdata, payload); } static void handler_drm_KE(struct wiimote_data *wdata, const __u8 *payload) { handler_keys(wdata, payload); handler_ext(wdata, &payload[2], 8); } static void handler_drm_KAI(struct wiimote_data *wdata, const __u8 *payload) { handler_keys(wdata, payload); handler_accel(wdata, payload); ir_to_input0(wdata, &payload[5], false); ir_to_input1(wdata, &payload[8], false); ir_to_input2(wdata, &payload[11], false); ir_to_input3(wdata, &payload[14], false); } static void handler_drm_KEE(struct wiimote_data *wdata, const __u8 *payload) { handler_keys(wdata, payload); handler_ext(wdata, &payload[2], 19); } static void handler_drm_KIE(struct wiimote_data *wdata, const __u8 *payload) { handler_keys(wdata, payload); ir_to_input0(wdata, &payload[2], false); ir_to_input1(wdata, &payload[4], true); ir_to_input2(wdata, &payload[7], false); ir_to_input3(wdata, &payload[9], true); handler_ext(wdata, &payload[12], 9); } static void handler_drm_KAE(struct wiimote_data *wdata, const __u8 *payload) { handler_keys(wdata, payload); handler_accel(wdata, payload); handler_ext(wdata, &payload[5], 16); } static void handler_drm_KAIE(struct wiimote_data *wdata, const __u8 *payload) { handler_keys(wdata, payload); handler_accel(wdata, payload); ir_to_input0(wdata, &payload[5], false); ir_to_input1(wdata, &payload[7], true); ir_to_input2(wdata, &payload[10], false); ir_to_input3(wdata, &payload[12], true); handler_ext(wdata, &payload[15], 6); } static void handler_drm_E(struct wiimote_data *wdata, const __u8 *payload) { handler_ext(wdata, payload, 21); } static void handler_drm_SKAI1(struct wiimote_data *wdata, const __u8 *payload) { handler_keys(wdata, payload); wdata->state.accel_split[0] = payload[2]; wdata->state.accel_split[1] = (payload[0] >> 1) & (0x10 | 0x20); wdata->state.accel_split[1] |= (payload[1] << 1) & (0x40 | 0x80); ir_to_input0(wdata, &payload[3], false); ir_to_input1(wdata, &payload[12], false); } static void handler_drm_SKAI2(struct wiimote_data *wdata, const __u8 *payload) { __u8 buf[5]; handler_keys(wdata, payload); wdata->state.accel_split[1] |= (payload[0] >> 5) & (0x01 | 0x02); wdata->state.accel_split[1] |= (payload[1] >> 3) & (0x04 | 0x08); buf[0] = 0; buf[1] = 0; buf[2] = wdata->state.accel_split[0]; buf[3] = payload[2]; buf[4] = wdata->state.accel_split[1]; handler_accel(wdata, buf); ir_to_input2(wdata, &payload[3], false); ir_to_input3(wdata, &payload[12], false); } struct wiiproto_handler { __u8 id; size_t size; void (*func)(struct wiimote_data *wdata, const __u8 *payload); }; static struct wiiproto_handler handlers[] = { { .id = WIIPROTO_REQ_STATUS, .size = 6, .func = handler_status }, { .id = WIIPROTO_REQ_STATUS, .size = 2, .func = handler_status_K }, { .id = WIIPROTO_REQ_DATA, .size = 21, .func = handler_data }, { .id = WIIPROTO_REQ_DATA, .size = 2, .func = handler_generic_K }, { .id = WIIPROTO_REQ_RETURN, .size = 4, .func = handler_return }, { .id = WIIPROTO_REQ_RETURN, .size = 2, .func = handler_generic_K }, { .id = WIIPROTO_REQ_DRM_K, .size = 2, .func = handler_keys }, { .id = WIIPROTO_REQ_DRM_KA, .size = 5, .func = handler_drm_KA }, { .id = WIIPROTO_REQ_DRM_KA, .size = 2, .func = handler_generic_K }, { .id = WIIPROTO_REQ_DRM_KE, .size = 10, .func = handler_drm_KE }, { .id = WIIPROTO_REQ_DRM_KE, .size = 2, .func = handler_generic_K }, { .id = WIIPROTO_REQ_DRM_KAI, .size = 17, .func = handler_drm_KAI }, { .id = WIIPROTO_REQ_DRM_KAI, .size = 2, .func = handler_generic_K }, { .id = WIIPROTO_REQ_DRM_KEE, .size = 21, .func = handler_drm_KEE }, { .id = WIIPROTO_REQ_DRM_KEE, .size = 2, .func = handler_generic_K }, { .id = WIIPROTO_REQ_DRM_KAE, .size = 21, .func = handler_drm_KAE }, { .id = WIIPROTO_REQ_DRM_KAE, .size = 2, .func = handler_generic_K }, { .id = WIIPROTO_REQ_DRM_KIE, .size = 21, .func = handler_drm_KIE }, { .id = WIIPROTO_REQ_DRM_KIE, .size = 2, .func = handler_generic_K }, { .id = WIIPROTO_REQ_DRM_KAIE, .size = 21, .func = handler_drm_KAIE }, { .id = WIIPROTO_REQ_DRM_KAIE, .size = 2, .func = handler_generic_K }, { .id = WIIPROTO_REQ_DRM_E, .size = 21, .func = handler_drm_E }, { .id = WIIPROTO_REQ_DRM_SKAI1, .size = 21, .func = handler_drm_SKAI1 }, { .id = WIIPROTO_REQ_DRM_SKAI2, .size = 21, .func = handler_drm_SKAI2 }, { .id = 0 } }; static int wiimote_hid_event(struct hid_device *hdev, struct hid_report *report, u8 *raw_data, int size) { struct wiimote_data *wdata = hid_get_drvdata(hdev); struct wiiproto_handler *h; int i; unsigned long flags; if (size < 1) return -EINVAL; spin_lock_irqsave(&wdata->state.lock, flags); for (i = 0; handlers[i].id; ++i) { h = &handlers[i]; if (h->id == raw_data[0] && h->size < size) { h->func(wdata, &raw_data[1]); break; } } if (!handlers[i].id) hid_warn(hdev, "Unhandled report %hhu size %d\n", raw_data[0], size); spin_unlock_irqrestore(&wdata->state.lock, flags); return 0; } static ssize_t wiimote_ext_show(struct device *dev, struct device_attribute *attr, char *buf) { struct wiimote_data *wdata = dev_to_wii(dev); __u8 type; unsigned long flags; spin_lock_irqsave(&wdata->state.lock, flags); type = wdata->state.exttype; spin_unlock_irqrestore(&wdata->state.lock, flags); switch (type) { case WIIMOTE_EXT_NONE: return sprintf(buf, "none\n"); case WIIMOTE_EXT_NUNCHUK: return sprintf(buf, "nunchuk\n"); case WIIMOTE_EXT_CLASSIC_CONTROLLER: return sprintf(buf, "classic\n"); case WIIMOTE_EXT_BALANCE_BOARD: return sprintf(buf, "balanceboard\n"); case WIIMOTE_EXT_PRO_CONTROLLER: return sprintf(buf, "procontroller\n"); case WIIMOTE_EXT_DRUMS: return sprintf(buf, "drums\n"); case WIIMOTE_EXT_GUITAR: return sprintf(buf, "guitar\n"); case WIIMOTE_EXT_UNKNOWN: /* fallthrough */ default: return sprintf(buf, "unknown\n"); } } static ssize_t wiimote_ext_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct wiimote_data *wdata = dev_to_wii(dev); if (!strcmp(buf, "scan")) { wiimote_schedule(wdata); } else { return -EINVAL; } return strnlen(buf, PAGE_SIZE); } static DEVICE_ATTR(extension, S_IRUGO | S_IWUSR | S_IWGRP, wiimote_ext_show, wiimote_ext_store); static ssize_t wiimote_dev_show(struct device *dev, struct device_attribute *attr, char *buf) { struct wiimote_data *wdata = dev_to_wii(dev); __u8 type; unsigned long flags; spin_lock_irqsave(&wdata->state.lock, flags); type = wdata->state.devtype; spin_unlock_irqrestore(&wdata->state.lock, flags); switch (type) { case WIIMOTE_DEV_GENERIC: return sprintf(buf, "generic\n"); case WIIMOTE_DEV_GEN10: return sprintf(buf, "gen10\n"); case WIIMOTE_DEV_GEN20: return sprintf(buf, "gen20\n"); case WIIMOTE_DEV_BALANCE_BOARD: return sprintf(buf, "balanceboard\n"); case WIIMOTE_DEV_PRO_CONTROLLER: return sprintf(buf, "procontroller\n"); case WIIMOTE_DEV_PENDING: return sprintf(buf, "pending\n"); case WIIMOTE_DEV_UNKNOWN: /* fallthrough */ default: return sprintf(buf, "unknown\n"); } } static DEVICE_ATTR(devtype, S_IRUGO, wiimote_dev_show, NULL); static struct wiimote_data *wiimote_create(struct hid_device *hdev) { struct wiimote_data *wdata; wdata = kzalloc(sizeof(*wdata), GFP_KERNEL); if (!wdata) return NULL; wdata->hdev = hdev; hid_set_drvdata(hdev, wdata); spin_lock_init(&wdata->queue.lock); INIT_WORK(&wdata->queue.worker, wiimote_queue_worker); spin_lock_init(&wdata->state.lock); init_completion(&wdata->state.ready); mutex_init(&wdata->state.sync); wdata->state.drm = WIIPROTO_REQ_DRM_K; wdata->state.cmd_battery = 0xff; INIT_WORK(&wdata->init_worker, wiimote_init_worker); timer_setup(&wdata->timer, wiimote_init_timeout, 0); return wdata; } static void wiimote_destroy(struct wiimote_data *wdata) { unsigned long flags; wiidebug_deinit(wdata); /* prevent init_worker from being scheduled again */ spin_lock_irqsave(&wdata->state.lock, flags); wdata->state.flags |= WIIPROTO_FLAG_EXITING; spin_unlock_irqrestore(&wdata->state.lock, flags); cancel_work_sync(&wdata->init_worker); del_timer_sync(&wdata->timer); device_remove_file(&wdata->hdev->dev, &dev_attr_devtype); device_remove_file(&wdata->hdev->dev, &dev_attr_extension); wiimote_mp_unload(wdata); wiimote_ext_unload(wdata); wiimote_modules_unload(wdata); cancel_work_sync(&wdata->queue.worker); hid_hw_close(wdata->hdev); hid_hw_stop(wdata->hdev); kfree(wdata); } static int wiimote_hid_probe(struct hid_device *hdev, const struct hid_device_id *id) { struct wiimote_data *wdata; int ret; hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; wdata = wiimote_create(hdev); if (!wdata) { hid_err(hdev, "Can't alloc device\n"); return -ENOMEM; } ret = hid_parse(hdev); if (ret) { hid_err(hdev, "HID parse failed\n"); goto err; } ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW); if (ret) { hid_err(hdev, "HW start failed\n"); goto err; } ret = hid_hw_open(hdev); if (ret) { hid_err(hdev, "cannot start hardware I/O\n"); goto err_stop; } ret = device_create_file(&hdev->dev, &dev_attr_extension); if (ret) { hid_err(hdev, "cannot create sysfs attribute\n"); goto err_close; } ret = device_create_file(&hdev->dev, &dev_attr_devtype); if (ret) { hid_err(hdev, "cannot create sysfs attribute\n"); goto err_ext; } ret = wiidebug_init(wdata); if (ret) goto err_free; hid_info(hdev, "New device registered\n"); /* schedule device detection */ wiimote_schedule(wdata); return 0; err_free: wiimote_destroy(wdata); return ret; err_ext: device_remove_file(&wdata->hdev->dev, &dev_attr_extension); err_close: hid_hw_close(hdev); err_stop: hid_hw_stop(hdev); err: input_free_device(wdata->ir); input_free_device(wdata->accel); kfree(wdata); return ret; } static void wiimote_hid_remove(struct hid_device *hdev) { struct wiimote_data *wdata = hid_get_drvdata(hdev); hid_info(hdev, "Device removed\n"); wiimote_destroy(wdata); } static const struct hid_device_id wiimote_hid_devices[] = { { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) }, { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE2) }, { } }; MODULE_DEVICE_TABLE(hid, wiimote_hid_devices); static struct hid_driver wiimote_hid_driver = { .name = "wiimote", .id_table = wiimote_hid_devices, .probe = wiimote_hid_probe, .remove = wiimote_hid_remove, .raw_event = wiimote_hid_event, }; module_hid_driver(wiimote_hid_driver); MODULE_LICENSE("GPL"); MODULE_AUTHOR("David Herrmann <dh.herrmann@gmail.com>"); MODULE_DESCRIPTION("Driver for Nintendo Wii / Wii U peripherals");