diff options
| -rw-r--r-- | drivers/hid/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/hid/Makefile | 3 | ||||
| -rw-r--r-- | drivers/hid/hid-wiimote-core.c | 23 | ||||
| -rw-r--r-- | drivers/hid/hid-wiimote-ext.c | 130 | ||||
| -rw-r--r-- | drivers/hid/hid-wiimote.h | 17 |
5 files changed, 178 insertions, 4 deletions
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig index 22a4a051f221..7a0c6f956d3e 100644 --- a/drivers/hid/Kconfig +++ b/drivers/hid/Kconfig @@ -623,6 +623,15 @@ config HID_WIIMOTE ---help--- Support for the Nintendo Wii Remote bluetooth device. +config HID_WIIMOTE_EXT + bool "Nintendo Wii Remote Extension support" + depends on HID_WIIMOTE + default HID_WIIMOTE + ---help--- + Support for extension controllers of the Nintendo Wii Remote. Say yes + here if you want to use the Nintendo Motion+, Nunchuck or Classic + extension controllers with your Wii Remote. + config HID_ZEROPLUS tristate "Zeroplus based game controller support" depends on USB_HID diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile index 96d33adb258a..5fab4e632eab 100644 --- a/drivers/hid/Makefile +++ b/drivers/hid/Makefile @@ -26,6 +26,9 @@ ifdef CONFIG_LOGIWHEELS_FF endif hid-wiimote-y := hid-wiimote-core.o +ifdef CONFIG_HID_WIIMOTE_EXT + hid-wiimote-y += hid-wiimote-ext.o +endif obj-$(CONFIG_HID_A4TECH) += hid-a4tech.o obj-$(CONFIG_HID_ACRUX) += hid-axff.o diff --git a/drivers/hid/hid-wiimote-core.c b/drivers/hid/hid-wiimote-core.c index f7f8b7ff7dec..2ca8bfd350ad 100644 --- a/drivers/hid/hid-wiimote-core.c +++ b/drivers/hid/hid-wiimote-core.c @@ -201,6 +201,7 @@ static void wiiproto_req_leds(struct wiimote_data *wdata, int leds) static __u8 select_drm(struct wiimote_data *wdata) { __u8 ir = wdata->state.flags & WIIPROTO_FLAGS_IR; + bool ext = wiiext_active(wdata); if (ir == WIIPROTO_FLAG_IR_BASIC) { if (wdata->state.flags & WIIPROTO_FLAG_ACCEL) @@ -212,10 +213,17 @@ static __u8 select_drm(struct wiimote_data *wdata) } else if (ir == WIIPROTO_FLAG_IR_FULL) { return WIIPROTO_REQ_DRM_SKAI1; } else { - if (wdata->state.flags & WIIPROTO_FLAG_ACCEL) - return WIIPROTO_REQ_DRM_KA; - else - return WIIPROTO_REQ_DRM_K; + 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_KE; + else + return WIIPROTO_REQ_DRM_K; + } } } @@ -795,6 +803,8 @@ static void handler_status(struct wiimote_data *wdata, const __u8 *payload) /* on status reports the drm is reset so we need to resend the drm */ wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL); + wiiext_event(wdata, payload[2] & 0x02); + if (wiimote_cmd_pending(wdata, WIIPROTO_REQ_SREQ, 0)) { wdata->state.cmd_battery = payload[5]; wiimote_cmd_complete(wdata); @@ -1145,6 +1155,7 @@ err: static void wiimote_destroy(struct wiimote_data *wdata) { + wiiext_deinit(wdata); wiimote_leds_destroy(wdata); power_supply_unregister(&wdata->battery); @@ -1216,6 +1227,10 @@ static int wiimote_hid_probe(struct hid_device *hdev, if (ret) goto err_free; + ret = wiiext_init(wdata); + if (ret) + goto err_free; + hid_info(hdev, "New device registered\n"); /* by default set led1 after device initialization */ diff --git a/drivers/hid/hid-wiimote-ext.c b/drivers/hid/hid-wiimote-ext.c new file mode 100644 index 000000000000..fa9c67722aca --- /dev/null +++ b/drivers/hid/hid-wiimote-ext.c @@ -0,0 +1,130 @@ +/* + * 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; + + atomic_t opened; + atomic_t mp_opened; + bool plugged; + bool motionp; + __u8 ext_type; +}; + +enum wiiext_type { + WIIEXT_NONE, /* placeholder */ + WIIEXT_CLASSIC, /* Nintendo classic controller */ + WIIEXT_NUNCHUCK, /* Nintendo nunchuck controller */ +}; + +static void wiiext_worker(struct work_struct *work) +{ + struct wiimote_ext *ext = container_of(work, struct wiimote_ext, + worker); +} + +/* 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; + /* + * 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; +} + +/* Initializes the extension driver of a wiimote */ +int wiiext_init(struct wiimote_data *wdata) +{ + struct wiimote_ext *ext; + unsigned long flags; + + ext = kzalloc(sizeof(*ext), GFP_KERNEL); + if (!ext) + return -ENOMEM; + + ext->wdata = wdata; + INIT_WORK(&ext->worker, wiiext_worker); + + spin_lock_irqsave(&wdata->state.lock, flags); + wdata->ext = ext; + spin_unlock_irqrestore(&wdata->state.lock, flags); + + return 0; +} + +/* 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); + + cancel_work_sync(&ext->worker); + kfree(ext); +} diff --git a/drivers/hid/hid-wiimote.h b/drivers/hid/hid-wiimote.h index 865740d3a3fe..abbfab8f60b7 100644 --- a/drivers/hid/hid-wiimote.h +++ b/drivers/hid/hid-wiimote.h @@ -73,6 +73,7 @@ struct wiimote_data { struct input_dev *accel; struct input_dev *ir; struct power_supply battery; + struct wiimote_ext *ext; spinlock_t qlock; __u8 head; @@ -118,6 +119,22 @@ extern int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset, extern ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset, __u8 *rmem, __u8 size); +#ifdef CONFIG_HID_WIIMOTE_EXT + +extern int wiiext_init(struct wiimote_data *wdata); +extern void wiiext_deinit(struct wiimote_data *wdata); +extern void wiiext_event(struct wiimote_data *wdata, bool plugged); +extern bool wiiext_active(struct wiimote_data *wdata); + +#else + +static inline int wiiext_init(void *u) { return 0; } +static inline void wiiext_deinit(void *u) { } +static inline void wiiext_event(void *u, bool p) { } +static inline bool wiiext_active(void *u) { return false; } + +#endif + /* requires the state.lock spinlock to be held */ static inline bool wiimote_cmd_pending(struct wiimote_data *wdata, int cmd, __u32 opt) |