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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __HID_TMFF2_H
#define __HID_TMFF2_H
#include <linux/fixp-arith.h>
#include <linux/ktime.h>
#include <linux/input.h>
#ifndef TMFF2_MAIN
extern int timer_msecs;
extern int spring_level;
extern int damper_level;
extern int friction_level;
extern int range;
extern int alt_mode;
#endif
#define USB_VENDOR_ID_THRUSTMASTER 0x044f
/* the wheel seems to only be capable of processing a certain number of
* interrupts per second, and if this value is too low the kernel urb buffer(or
* some buffer at least) fills up. Optimally I would figure out some way to
* space out the interrupts so that they all leave at regular intervals, but
* for now this is good enough, go slow enough that everything works.
*/
#define DEFAULT_TIMER_PERIOD 8
#define FF_EFFECT_QUEUE_UPLOAD 0
#define FF_EFFECT_QUEUE_START 1
#define FF_EFFECT_QUEUE_STOP 2
#define FF_EFFECT_QUEUE_UPDATE 3
#define FF_EFFECT_PLAYING 4
#define HAS_SPRING_LEVEL (1 << 0)
#define HAS_DAMPER_LEVEL (1 << 1)
#define HAS_FRICTION_LEVEL (1 << 2)
#define HAS_RANGE (1 << 3)
#define HAS_ALT_MODE (1 << 4)
#undef fixp_sin16
#define fixp_sin16(v) (((v % 360) > 180) ?\
-(fixp_sin32((v % 360) - 180) >> 16)\
: fixp_sin32(v) >> 16)
#define JIFFIES2MS(jiffies) ((jiffies) * 1000 / HZ)
struct tmff2_effect_state {
struct ff_effect effect;
struct ff_effect old;
unsigned long flags;
unsigned long count;
unsigned long start_time;
};
struct tmff2_device_entry {
struct hid_device *hdev;
struct input_dev *input_dev;
/* pointer to array */
struct tmff2_effect_state *states;
struct delayed_work work;
spinlock_t lock;
/* fields relevant to each actual device (T300, T150...) */
void *data;
unsigned long params;
unsigned long max_effects;
signed short supported_effects[FF_CNT];
/* obligatory callbacks */
int (*play_effect)(void *data, struct tmff2_effect_state *state);
int (*upload_effect)(void *data, struct tmff2_effect_state *state);
int (*update_effect)(void *data, struct tmff2_effect_state *state);
int (*stop_effect)(void *data, struct tmff2_effect_state *state);
int (*wheel_init)(struct tmff2_device_entry *tmff2);
int (*wheel_destroy)(void *data);
/* optional callbacks */
int (*open)(void *data);
int (*close)(void *data);
int (*set_gain)(void *data, uint16_t gain);
int (*set_range)(void *data, uint16_t range);
int (*switch_mode)(void *data, uint16_t mode);
int (*set_autocenter)(void *data, uint16_t autocenter);
__u8 *(*wheel_fixup)(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize);
/* void pointers are dangerous, I know, but in this case likely the best option... */
};
#endif /* __HID_TMFF2_H */
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