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linux/drivers/hid/hid-wiimote.h
Daniel G. Morse a8cbf80e9f HID: Wiimote: Treat the d-pad as an analogue stick 
The controllers from the Super Nintendo Classic Edition (AKA the SNES
Mini) appear as a Classic Controller Pro when connected to a Wii
Remote. All the buttons work as the same, with the d-pad being mapped
the same as the d-pad on the Classic Controller Pro. This differs from
the behaviour of most controllers with d-pads and no analogue sticks,
where the d-pad maps to ABS_HAT1X for left and right, and ABS_HAT1Y
for up and down. This patch adds an option to the hid-wiimote module
to make the Super Nintendo Classic Controller behave this way.

The patch has been tested with a Super Nintendo Classic Controller
plugged into a Wii Remote in both with the option both enabled and
disabled. When enabled the d-pad acts as the analogue control, and
when disabled it acts as it did before the patch was applied. This
patch has not been tested with e Wii Classic Controller (either the
original or the pro version) as I do not have one of these
controllers.

Although I have not tested it with these controllers, I think it is
likely this patch will also work with the NES Classic Edition
Controllers.

Signed-off-by: Daniel G. Morse <dmorse@speedfox.co.uk>
Reviewed-by: David Rheinsberg <david.rheinsberg@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2020-06-19 14:17:22 +02:00

378 lines
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/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef __HID_WIIMOTE_H
#define __HID_WIIMOTE_H
/*
* 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/leds.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/power_supply.h>
#include <linux/spinlock.h>
#include <linux/timer.h>
#define WIIMOTE_NAME "Nintendo Wii Remote"
#define WIIMOTE_BUFSIZE 32
#define WIIPROTO_FLAG_LED1 0x01
#define WIIPROTO_FLAG_LED2 0x02
#define WIIPROTO_FLAG_LED3 0x04
#define WIIPROTO_FLAG_LED4 0x08
#define WIIPROTO_FLAG_RUMBLE 0x10
#define WIIPROTO_FLAG_ACCEL 0x20
#define WIIPROTO_FLAG_IR_BASIC 0x40
#define WIIPROTO_FLAG_IR_EXT 0x80
#define WIIPROTO_FLAG_IR_FULL 0xc0 /* IR_BASIC | IR_EXT */
#define WIIPROTO_FLAG_EXT_PLUGGED 0x0100
#define WIIPROTO_FLAG_EXT_USED 0x0200
#define WIIPROTO_FLAG_EXT_ACTIVE 0x0400
#define WIIPROTO_FLAG_MP_PLUGGED 0x0800
#define WIIPROTO_FLAG_MP_USED 0x1000
#define WIIPROTO_FLAG_MP_ACTIVE 0x2000
#define WIIPROTO_FLAG_EXITING 0x4000
#define WIIPROTO_FLAG_DRM_LOCKED 0x8000
#define WIIPROTO_FLAG_BUILTIN_MP 0x010000
#define WIIPROTO_FLAG_NO_MP 0x020000
#define WIIPROTO_FLAG_PRO_CALIB_DONE 0x040000
#define WIIPROTO_FLAGS_LEDS (WIIPROTO_FLAG_LED1 | WIIPROTO_FLAG_LED2 | \
WIIPROTO_FLAG_LED3 | WIIPROTO_FLAG_LED4)
#define WIIPROTO_FLAGS_IR (WIIPROTO_FLAG_IR_BASIC | WIIPROTO_FLAG_IR_EXT | \
WIIPROTO_FLAG_IR_FULL)
/* return flag for led \num */
#define WIIPROTO_FLAG_LED(num) (WIIPROTO_FLAG_LED1 << (num - 1))
enum wiiproto_keys {
WIIPROTO_KEY_LEFT,
WIIPROTO_KEY_RIGHT,
WIIPROTO_KEY_UP,
WIIPROTO_KEY_DOWN,
WIIPROTO_KEY_PLUS,
WIIPROTO_KEY_MINUS,
WIIPROTO_KEY_ONE,
WIIPROTO_KEY_TWO,
WIIPROTO_KEY_A,
WIIPROTO_KEY_B,
WIIPROTO_KEY_HOME,
WIIPROTO_KEY_COUNT
};
enum wiimote_devtype {
WIIMOTE_DEV_PENDING,
WIIMOTE_DEV_UNKNOWN,
WIIMOTE_DEV_GENERIC,
WIIMOTE_DEV_GEN10,
WIIMOTE_DEV_GEN20,
WIIMOTE_DEV_BALANCE_BOARD,
WIIMOTE_DEV_PRO_CONTROLLER,
WIIMOTE_DEV_NUM,
};
enum wiimote_exttype {
WIIMOTE_EXT_NONE,
WIIMOTE_EXT_UNKNOWN,
WIIMOTE_EXT_NUNCHUK,
WIIMOTE_EXT_CLASSIC_CONTROLLER,
WIIMOTE_EXT_BALANCE_BOARD,
WIIMOTE_EXT_PRO_CONTROLLER,
WIIMOTE_EXT_DRUMS,
WIIMOTE_EXT_GUITAR,
WIIMOTE_EXT_NUM,
};
enum wiimote_mptype {
WIIMOTE_MP_NONE,
WIIMOTE_MP_UNKNOWN,
WIIMOTE_MP_SINGLE,
WIIMOTE_MP_PASSTHROUGH_NUNCHUK,
WIIMOTE_MP_PASSTHROUGH_CLASSIC,
};
struct wiimote_buf {
__u8 data[HID_MAX_BUFFER_SIZE];
size_t size;
};
struct wiimote_queue {
spinlock_t lock;
struct work_struct worker;
__u8 head;
__u8 tail;
struct wiimote_buf outq[WIIMOTE_BUFSIZE];
};
struct wiimote_state {
spinlock_t lock;
__u32 flags;
__u8 accel_split[2];
__u8 drm;
__u8 devtype;
__u8 exttype;
__u8 mp;
/* synchronous cmd requests */
struct mutex sync;
struct completion ready;
int cmd;
__u32 opt;
/* results of synchronous requests */
__u8 cmd_battery;
__u8 cmd_err;
__u8 *cmd_read_buf;
__u8 cmd_read_size;
/* calibration/cache data */
__u16 calib_bboard[4][3];
__s16 calib_pro_sticks[4];
__u8 pressure_drums[7];
__u8 cache_rumble;
};
struct wiimote_data {
struct hid_device *hdev;
struct input_dev *input;
struct work_struct rumble_worker;
struct led_classdev *leds[4];
struct input_dev *accel;
struct input_dev *ir;
struct power_supply *battery;
struct power_supply_desc battery_desc;
struct input_dev *mp;
struct timer_list timer;
struct wiimote_debug *debug;
union {
struct input_dev *input;
} extension;
struct wiimote_queue queue;
struct wiimote_state state;
struct work_struct init_worker;
};
extern bool wiimote_dpad_as_analog;
/* wiimote modules */
enum wiimod_module {
WIIMOD_KEYS,
WIIMOD_RUMBLE,
WIIMOD_BATTERY,
WIIMOD_LED1,
WIIMOD_LED2,
WIIMOD_LED3,
WIIMOD_LED4,
WIIMOD_ACCEL,
WIIMOD_IR,
WIIMOD_BUILTIN_MP,
WIIMOD_NO_MP,
WIIMOD_NUM,
WIIMOD_NULL = WIIMOD_NUM,
};
#define WIIMOD_FLAG_INPUT 0x0001
#define WIIMOD_FLAG_EXT8 0x0002
#define WIIMOD_FLAG_EXT16 0x0004
struct wiimod_ops {
__u16 flags;
unsigned long arg;
int (*probe) (const struct wiimod_ops *ops,
struct wiimote_data *wdata);
void (*remove) (const struct wiimod_ops *ops,
struct wiimote_data *wdata);
void (*in_keys) (struct wiimote_data *wdata, const __u8 *keys);
void (*in_accel) (struct wiimote_data *wdata, const __u8 *accel);
void (*in_ir) (struct wiimote_data *wdata, const __u8 *ir, bool packed,
unsigned int id);
void (*in_mp) (struct wiimote_data *wdata, const __u8 *mp);
void (*in_ext) (struct wiimote_data *wdata, const __u8 *ext);
};
extern const struct wiimod_ops *wiimod_table[WIIMOD_NUM];
extern const struct wiimod_ops *wiimod_ext_table[WIIMOTE_EXT_NUM];
extern const struct wiimod_ops wiimod_mp;
/* wiimote requests */
enum wiiproto_reqs {
WIIPROTO_REQ_NULL = 0x0,
WIIPROTO_REQ_RUMBLE = 0x10,
WIIPROTO_REQ_LED = 0x11,
WIIPROTO_REQ_DRM = 0x12,
WIIPROTO_REQ_IR1 = 0x13,
WIIPROTO_REQ_SREQ = 0x15,
WIIPROTO_REQ_WMEM = 0x16,
WIIPROTO_REQ_RMEM = 0x17,
WIIPROTO_REQ_IR2 = 0x1a,
WIIPROTO_REQ_STATUS = 0x20,
WIIPROTO_REQ_DATA = 0x21,
WIIPROTO_REQ_RETURN = 0x22,
/* DRM_K: BB*2 */
WIIPROTO_REQ_DRM_K = 0x30,
/* DRM_KA: BB*2 AA*3 */
WIIPROTO_REQ_DRM_KA = 0x31,
/* DRM_KE: BB*2 EE*8 */
WIIPROTO_REQ_DRM_KE = 0x32,
/* DRM_KAI: BB*2 AA*3 II*12 */
WIIPROTO_REQ_DRM_KAI = 0x33,
/* DRM_KEE: BB*2 EE*19 */
WIIPROTO_REQ_DRM_KEE = 0x34,
/* DRM_KAE: BB*2 AA*3 EE*16 */
WIIPROTO_REQ_DRM_KAE = 0x35,
/* DRM_KIE: BB*2 II*10 EE*9 */
WIIPROTO_REQ_DRM_KIE = 0x36,
/* DRM_KAIE: BB*2 AA*3 II*10 EE*6 */
WIIPROTO_REQ_DRM_KAIE = 0x37,
/* DRM_E: EE*21 */
WIIPROTO_REQ_DRM_E = 0x3d,
/* DRM_SKAI1: BB*2 AA*1 II*18 */
WIIPROTO_REQ_DRM_SKAI1 = 0x3e,
/* DRM_SKAI2: BB*2 AA*1 II*18 */
WIIPROTO_REQ_DRM_SKAI2 = 0x3f,
WIIPROTO_REQ_MAX
};
#define dev_to_wii(pdev) hid_get_drvdata(to_hid_device(pdev))
void __wiimote_schedule(struct wiimote_data *wdata);
extern void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm);
extern void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble);
extern void wiiproto_req_leds(struct wiimote_data *wdata, int leds);
extern void wiiproto_req_status(struct wiimote_data *wdata);
extern void wiiproto_req_accel(struct wiimote_data *wdata, __u8 accel);
extern void wiiproto_req_ir1(struct wiimote_data *wdata, __u8 flags);
extern void wiiproto_req_ir2(struct wiimote_data *wdata, __u8 flags);
extern int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset,
const __u8 *wmem, __u8 size);
extern ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset,
__u8 *rmem, __u8 size);
#define wiiproto_req_rreg(wdata, os, sz) \
wiiproto_req_rmem((wdata), false, (os), (sz))
#define wiiproto_req_reeprom(wdata, os, sz) \
wiiproto_req_rmem((wdata), true, (os), (sz))
extern void wiiproto_req_rmem(struct wiimote_data *wdata, bool eeprom,
__u32 offset, __u16 size);
#ifdef CONFIG_DEBUG_FS
extern int wiidebug_init(struct wiimote_data *wdata);
extern void wiidebug_deinit(struct wiimote_data *wdata);
#else
static inline int wiidebug_init(void *u) { return 0; }
static inline void wiidebug_deinit(void *u) { }
#endif
/* requires the state.lock spinlock to be held */
static inline bool wiimote_cmd_pending(struct wiimote_data *wdata, int cmd,
__u32 opt)
{
return wdata->state.cmd == cmd && wdata->state.opt == opt;
}
/* requires the state.lock spinlock to be held */
static inline void wiimote_cmd_complete(struct wiimote_data *wdata)
{
wdata->state.cmd = WIIPROTO_REQ_NULL;
complete(&wdata->state.ready);
}
/* requires the state.lock spinlock to be held */
static inline void wiimote_cmd_abort(struct wiimote_data *wdata)
{
/* Abort synchronous request by waking up the sleeping caller. But
* reset the state.cmd field to an invalid value so no further event
* handlers will work with it. */
wdata->state.cmd = WIIPROTO_REQ_MAX;
complete(&wdata->state.ready);
}
static inline int wiimote_cmd_acquire(struct wiimote_data *wdata)
{
return mutex_lock_interruptible(&wdata->state.sync) ? -ERESTARTSYS : 0;
}
static inline void wiimote_cmd_acquire_noint(struct wiimote_data *wdata)
{
mutex_lock(&wdata->state.sync);
}
/* requires the state.lock spinlock to be held */
static inline void wiimote_cmd_set(struct wiimote_data *wdata, int cmd,
__u32 opt)
{
reinit_completion(&wdata->state.ready);
wdata->state.cmd = cmd;
wdata->state.opt = opt;
}
static inline void wiimote_cmd_release(struct wiimote_data *wdata)
{
mutex_unlock(&wdata->state.sync);
}
static inline int wiimote_cmd_wait(struct wiimote_data *wdata)
{
int ret;
/* The completion acts as implicit memory barrier so we can safely
* assume that state.cmd is set on success/failure and isn't accessed
* by any other thread, anymore. */
ret = wait_for_completion_interruptible_timeout(&wdata->state.ready, HZ);
if (ret < 0)
return -ERESTARTSYS;
else if (ret == 0)
return -EIO;
else if (wdata->state.cmd != WIIPROTO_REQ_NULL)
return -EIO;
else
return 0;
}
static inline int wiimote_cmd_wait_noint(struct wiimote_data *wdata)
{
unsigned long ret;
/* no locking needed; see wiimote_cmd_wait() */
ret = wait_for_completion_timeout(&wdata->state.ready, HZ);
if (!ret)
return -EIO;
else if (wdata->state.cmd != WIIPROTO_REQ_NULL)
return -EIO;
else
return 0;
}
#endif
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