// SPDX-License-Identifier: GPL-2.0-or-later /* * HID driver for Nintendo Wii / Wii U peripherals * Copyright (c) 2011-2013 David Herrmann <[email protected]> */ /* */ #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) { … } static void wiimote_queue_worker(struct work_struct *work) { … } static void wiimote_queue(struct wiimote_data *wdata, const __u8 *buffer, size_t count) { … } /* * 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) { … } void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble) { … } void wiiproto_req_leds(struct wiimote_data *wdata, int leds) { … } /* * 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) { … } void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm) { … } void wiiproto_req_status(struct wiimote_data *wdata) { … } void wiiproto_req_accel(struct wiimote_data *wdata, __u8 accel) { … } void wiiproto_req_ir1(struct wiimote_data *wdata, __u8 flags) { … } void wiiproto_req_ir2(struct wiimote_data *wdata, __u8 flags) { … } #define wiiproto_req_wreg(wdata, os, buf, sz) … #define wiiproto_req_weeprom(wdata, os, buf, sz) … static void wiiproto_req_wmem(struct wiimote_data *wdata, bool eeprom, __u32 offset, const __u8 *buf, __u8 size) { … } void wiiproto_req_rmem(struct wiimote_data *wdata, bool eeprom, __u32 offset, __u16 size) { … } /* requries the cmd-mutex to be held */ int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset, const __u8 *wmem, __u8 size) { … } /* requries the cmd-mutex to be held */ ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset, __u8 *rmem, __u8 size) { … } /* requires the cmd-mutex to be held */ static int wiimote_cmd_init_ext(struct wiimote_data *wdata) { … } /* requires the cmd-mutex to be held */ static __u8 wiimote_cmd_read_ext(struct wiimote_data *wdata, __u8 *rmem) { … } /* requires the cmd-mutex to be held */ static int wiimote_cmd_init_mp(struct wiimote_data *wdata) { … } /* requires the cmd-mutex to be held */ static bool wiimote_cmd_map_mp(struct wiimote_data *wdata, __u8 exttype) { … } /* requires the cmd-mutex to be held */ static bool wiimote_cmd_read_mp(struct wiimote_data *wdata, __u8 *rmem) { … } /* requires the cmd-mutex to be held */ static __u8 wiimote_cmd_read_mp_mapped(struct wiimote_data *wdata) { … } /* device module handling */ static const __u8 * const wiimote_devtype_mods[WIIMOTE_DEV_NUM] = …; static void wiimote_modules_load(struct wiimote_data *wdata, unsigned int devtype) { … } static void wiimote_modules_unload(struct wiimote_data *wdata) { … } /* device extension handling */ static void wiimote_ext_load(struct wiimote_data *wdata, unsigned int ext) { … } static void wiimote_ext_unload(struct wiimote_data *wdata) { … } static void wiimote_mp_load(struct wiimote_data *wdata) { … } static void wiimote_mp_unload(struct wiimote_data *wdata) { … } /* device (re-)initialization and detection */ static const char *wiimote_devtype_names[WIIMOTE_DEV_NUM] = …; /* 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) { … } static void wiimote_init_detect(struct wiimote_data *wdata) { … } /* * 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) { … } /* * 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) { … } static const char *wiimote_exttype_names[WIIMOTE_EXT_NUM] = …; /* * 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) { … } static void wiimote_init_worker(struct work_struct *work) { … } void __wiimote_schedule(struct wiimote_data *wdata) { … } static void wiimote_schedule(struct wiimote_data *wdata) { … } static void wiimote_init_timeout(struct timer_list *t) { … } /* protocol handlers */ static void handler_keys(struct wiimote_data *wdata, const __u8 *payload) { … } static void handler_accel(struct wiimote_data *wdata, const __u8 *payload) { … } static bool valid_ext_handler(const struct wiimod_ops *ops, size_t len) { … } static void handler_ext(struct wiimote_data *wdata, const __u8 *payload, size_t len) { … } #define ir_to_input0(wdata, ir, packed) … #define ir_to_input1(wdata, ir, packed) … #define ir_to_input2(wdata, ir, packed) … #define ir_to_input3(wdata, ir, packed) … static void handler_ir(struct wiimote_data *wdata, const __u8 *payload, bool packed, unsigned int id) { … } /* reduced status report with "BB BB" key data only */ static void handler_status_K(struct wiimote_data *wdata, const __u8 *payload) { … } /* extended status report with "BB BB LF 00 00 VV" data */ static void handler_status(struct wiimote_data *wdata, const __u8 *payload) { … } /* reduced generic report with "BB BB" key data only */ static void handler_generic_K(struct wiimote_data *wdata, const __u8 *payload) { … } static void handler_data(struct wiimote_data *wdata, const __u8 *payload) { … } static void handler_return(struct wiimote_data *wdata, const __u8 *payload) { … } static void handler_drm_KA(struct wiimote_data *wdata, const __u8 *payload) { … } static void handler_drm_KE(struct wiimote_data *wdata, const __u8 *payload) { … } static void handler_drm_KAI(struct wiimote_data *wdata, const __u8 *payload) { … } static void handler_drm_KEE(struct wiimote_data *wdata, const __u8 *payload) { … } static void handler_drm_KIE(struct wiimote_data *wdata, const __u8 *payload) { … } static void handler_drm_KAE(struct wiimote_data *wdata, const __u8 *payload) { … } static void handler_drm_KAIE(struct wiimote_data *wdata, const __u8 *payload) { … } static void handler_drm_E(struct wiimote_data *wdata, const __u8 *payload) { … } static void handler_drm_SKAI1(struct wiimote_data *wdata, const __u8 *payload) { … } static void handler_drm_SKAI2(struct wiimote_data *wdata, const __u8 *payload) { … } struct wiiproto_handler { … }; static const struct wiiproto_handler handlers[] = …; static int wiimote_hid_event(struct hid_device *hdev, struct hid_report *report, u8 *raw_data, int size) { … } static ssize_t wiimote_ext_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t wiimote_ext_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } 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) { … } static DEVICE_ATTR(devtype, S_IRUGO, wiimote_dev_show, NULL); static struct wiimote_data *wiimote_create(struct hid_device *hdev) { … } static void wiimote_destroy(struct wiimote_data *wdata) { … } static int wiimote_hid_probe(struct hid_device *hdev, const struct hid_device_id *id) { … } static void wiimote_hid_remove(struct hid_device *hdev) { … } static const struct hid_device_id wiimote_hid_devices[] = …; bool wiimote_dpad_as_analog = …; module_param_named(dpad_as_analog, wiimote_dpad_as_analog, bool, 0644); MODULE_PARM_DESC(…) …; MODULE_DEVICE_TABLE(hid, wiimote_hid_devices); static struct hid_driver wiimote_hid_driver = …; module_hid_driver(…) …; MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …;
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