forked from Minki/linux
0ea1675723
Accelerometer data is very similar to KEYS handling. Therefore, convert all ACCEL related handling into a sub-device module similar to KEYS. This doesn't change any semantics but only moves code over to wiimote-modules. Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
320 lines
8.1 KiB
C
320 lines
8.1 KiB
C
#ifndef __HID_WIIMOTE_H
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#define __HID_WIIMOTE_H
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/*
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* HID driver for Nintendo Wii / Wii U peripherals
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* Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com>
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*/
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*/
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#include <linux/completion.h>
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#include <linux/device.h>
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#include <linux/hid.h>
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#include <linux/input.h>
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#include <linux/leds.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/power_supply.h>
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#include <linux/spinlock.h>
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#define WIIMOTE_NAME "Nintendo Wii Remote"
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#define WIIMOTE_BUFSIZE 32
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#define WIIPROTO_FLAG_LED1 0x01
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#define WIIPROTO_FLAG_LED2 0x02
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#define WIIPROTO_FLAG_LED3 0x04
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#define WIIPROTO_FLAG_LED4 0x08
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#define WIIPROTO_FLAG_RUMBLE 0x10
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#define WIIPROTO_FLAG_ACCEL 0x20
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#define WIIPROTO_FLAG_IR_BASIC 0x40
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#define WIIPROTO_FLAG_IR_EXT 0x80
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#define WIIPROTO_FLAG_IR_FULL 0xc0 /* IR_BASIC | IR_EXT */
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#define WIIPROTO_FLAG_EXT_PLUGGED 0x0100
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#define WIIPROTO_FLAGS_LEDS (WIIPROTO_FLAG_LED1 | WIIPROTO_FLAG_LED2 | \
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WIIPROTO_FLAG_LED3 | WIIPROTO_FLAG_LED4)
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#define WIIPROTO_FLAGS_IR (WIIPROTO_FLAG_IR_BASIC | WIIPROTO_FLAG_IR_EXT | \
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WIIPROTO_FLAG_IR_FULL)
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/* return flag for led \num */
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#define WIIPROTO_FLAG_LED(num) (WIIPROTO_FLAG_LED1 << (num - 1))
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enum wiiproto_keys {
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WIIPROTO_KEY_LEFT,
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WIIPROTO_KEY_RIGHT,
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WIIPROTO_KEY_UP,
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WIIPROTO_KEY_DOWN,
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WIIPROTO_KEY_PLUS,
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WIIPROTO_KEY_MINUS,
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WIIPROTO_KEY_ONE,
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WIIPROTO_KEY_TWO,
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WIIPROTO_KEY_A,
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WIIPROTO_KEY_B,
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WIIPROTO_KEY_HOME,
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WIIPROTO_KEY_COUNT
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};
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enum wiimote_devtype {
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WIIMOTE_DEV_PENDING,
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WIIMOTE_DEV_UNKNOWN,
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WIIMOTE_DEV_GENERIC,
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WIIMOTE_DEV_GEN10,
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WIIMOTE_DEV_GEN20,
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WIIMOTE_DEV_NUM,
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};
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enum wiimote_exttype {
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WIIMOTE_EXT_NONE,
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WIIMOTE_EXT_UNKNOWN,
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WIIMOTE_EXT_NUM,
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};
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struct wiimote_buf {
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__u8 data[HID_MAX_BUFFER_SIZE];
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size_t size;
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};
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struct wiimote_queue {
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spinlock_t lock;
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struct work_struct worker;
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__u8 head;
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__u8 tail;
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struct wiimote_buf outq[WIIMOTE_BUFSIZE];
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};
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struct wiimote_state {
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spinlock_t lock;
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__u32 flags;
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__u8 accel_split[2];
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__u8 drm;
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__u8 devtype;
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/* synchronous cmd requests */
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struct mutex sync;
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struct completion ready;
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int cmd;
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__u32 opt;
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/* results of synchronous requests */
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__u8 cmd_battery;
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__u8 cmd_err;
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__u8 *cmd_read_buf;
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__u8 cmd_read_size;
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};
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struct wiimote_data {
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struct hid_device *hdev;
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struct input_dev *input;
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struct led_classdev *leds[4];
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struct input_dev *accel;
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struct input_dev *ir;
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struct power_supply battery;
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struct wiimote_ext *ext;
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struct wiimote_debug *debug;
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struct wiimote_queue queue;
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struct wiimote_state state;
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struct work_struct init_worker;
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};
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/* wiimote modules */
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enum wiimod_module {
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WIIMOD_KEYS,
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WIIMOD_RUMBLE,
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WIIMOD_BATTERY,
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WIIMOD_LED1,
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WIIMOD_LED2,
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WIIMOD_LED3,
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WIIMOD_LED4,
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WIIMOD_ACCEL,
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WIIMOD_NUM,
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WIIMOD_NULL = WIIMOD_NUM,
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};
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#define WIIMOD_FLAG_INPUT 0x0001
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struct wiimod_ops {
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__u16 flags;
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unsigned long arg;
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int (*probe) (const struct wiimod_ops *ops,
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struct wiimote_data *wdata);
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void (*remove) (const struct wiimod_ops *ops,
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struct wiimote_data *wdata);
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void (*in_keys) (struct wiimote_data *wdata, const __u8 *keys);
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void (*in_accel) (struct wiimote_data *wdata, const __u8 *accel);
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void (*in_ir) (struct wiimote_data *wdata, const __u8 *ir, bool packed,
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unsigned int id);
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};
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extern const struct wiimod_ops *wiimod_table[WIIMOD_NUM];
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/* wiimote requests */
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enum wiiproto_reqs {
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WIIPROTO_REQ_NULL = 0x0,
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WIIPROTO_REQ_RUMBLE = 0x10,
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WIIPROTO_REQ_LED = 0x11,
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WIIPROTO_REQ_DRM = 0x12,
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WIIPROTO_REQ_IR1 = 0x13,
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WIIPROTO_REQ_SREQ = 0x15,
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WIIPROTO_REQ_WMEM = 0x16,
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WIIPROTO_REQ_RMEM = 0x17,
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WIIPROTO_REQ_IR2 = 0x1a,
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WIIPROTO_REQ_STATUS = 0x20,
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WIIPROTO_REQ_DATA = 0x21,
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WIIPROTO_REQ_RETURN = 0x22,
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WIIPROTO_REQ_DRM_K = 0x30,
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WIIPROTO_REQ_DRM_KA = 0x31,
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WIIPROTO_REQ_DRM_KE = 0x32,
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WIIPROTO_REQ_DRM_KAI = 0x33,
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WIIPROTO_REQ_DRM_KEE = 0x34,
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WIIPROTO_REQ_DRM_KAE = 0x35,
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WIIPROTO_REQ_DRM_KIE = 0x36,
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WIIPROTO_REQ_DRM_KAIE = 0x37,
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WIIPROTO_REQ_DRM_E = 0x3d,
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WIIPROTO_REQ_DRM_SKAI1 = 0x3e,
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WIIPROTO_REQ_DRM_SKAI2 = 0x3f,
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WIIPROTO_REQ_MAX
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};
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#define dev_to_wii(pdev) hid_get_drvdata(container_of(pdev, struct hid_device, \
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dev))
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extern void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm);
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extern void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble);
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extern void wiiproto_req_leds(struct wiimote_data *wdata, int leds);
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extern void wiiproto_req_status(struct wiimote_data *wdata);
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extern void wiiproto_req_accel(struct wiimote_data *wdata, __u8 accel);
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extern int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset,
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const __u8 *wmem, __u8 size);
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extern ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset,
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__u8 *rmem, __u8 size);
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#define wiiproto_req_rreg(wdata, os, sz) \
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wiiproto_req_rmem((wdata), false, (os), (sz))
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#define wiiproto_req_reeprom(wdata, os, sz) \
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wiiproto_req_rmem((wdata), true, (os), (sz))
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extern void wiiproto_req_rmem(struct wiimote_data *wdata, bool eeprom,
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__u32 offset, __u16 size);
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#ifdef CONFIG_HID_WIIMOTE_EXT
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extern int wiiext_init(struct wiimote_data *wdata);
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extern void wiiext_deinit(struct wiimote_data *wdata);
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extern void wiiext_event(struct wiimote_data *wdata, bool plugged);
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extern bool wiiext_active(struct wiimote_data *wdata);
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extern void wiiext_handle(struct wiimote_data *wdata, const __u8 *payload);
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#else
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static inline int wiiext_init(void *u) { return 0; }
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static inline void wiiext_deinit(void *u) { }
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static inline void wiiext_event(void *u, bool p) { }
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static inline bool wiiext_active(void *u) { return false; }
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static inline void wiiext_handle(void *u, const __u8 *p) { }
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#endif
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#ifdef CONFIG_DEBUG_FS
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extern int wiidebug_init(struct wiimote_data *wdata);
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extern void wiidebug_deinit(struct wiimote_data *wdata);
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#else
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static inline int wiidebug_init(void *u) { return 0; }
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static inline void wiidebug_deinit(void *u) { }
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#endif
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/* requires the state.lock spinlock to be held */
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static inline bool wiimote_cmd_pending(struct wiimote_data *wdata, int cmd,
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__u32 opt)
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{
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return wdata->state.cmd == cmd && wdata->state.opt == opt;
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}
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/* requires the state.lock spinlock to be held */
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static inline void wiimote_cmd_complete(struct wiimote_data *wdata)
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{
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wdata->state.cmd = WIIPROTO_REQ_NULL;
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complete(&wdata->state.ready);
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}
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/* requires the state.lock spinlock to be held */
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static inline void wiimote_cmd_abort(struct wiimote_data *wdata)
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{
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/* Abort synchronous request by waking up the sleeping caller. But
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* reset the state.cmd field to an invalid value so no further event
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* handlers will work with it. */
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wdata->state.cmd = WIIPROTO_REQ_MAX;
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complete(&wdata->state.ready);
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}
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static inline int wiimote_cmd_acquire(struct wiimote_data *wdata)
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{
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return mutex_lock_interruptible(&wdata->state.sync) ? -ERESTARTSYS : 0;
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}
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static inline void wiimote_cmd_acquire_noint(struct wiimote_data *wdata)
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{
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mutex_lock(&wdata->state.sync);
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}
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/* requires the state.lock spinlock to be held */
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static inline void wiimote_cmd_set(struct wiimote_data *wdata, int cmd,
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__u32 opt)
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{
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INIT_COMPLETION(wdata->state.ready);
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wdata->state.cmd = cmd;
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wdata->state.opt = opt;
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}
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static inline void wiimote_cmd_release(struct wiimote_data *wdata)
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{
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mutex_unlock(&wdata->state.sync);
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}
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static inline int wiimote_cmd_wait(struct wiimote_data *wdata)
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{
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int ret;
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/* The completion acts as implicit memory barrier so we can safely
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* assume that state.cmd is set on success/failure and isn't accessed
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* by any other thread, anymore. */
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ret = wait_for_completion_interruptible_timeout(&wdata->state.ready, HZ);
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if (ret < 0)
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return -ERESTARTSYS;
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else if (ret == 0)
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return -EIO;
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else if (wdata->state.cmd != WIIPROTO_REQ_NULL)
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return -EIO;
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else
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return 0;
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}
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static inline int wiimote_cmd_wait_noint(struct wiimote_data *wdata)
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{
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unsigned long ret;
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/* no locking needed; see wiimote_cmd_wait() */
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ret = wait_for_completion_timeout(&wdata->state.ready, HZ);
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if (!ret)
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return -EIO;
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else if (wdata->state.cmd != WIIPROTO_REQ_NULL)
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return -EIO;
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else
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return 0;
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}
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#endif
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