Input: use new FF interface in the HID force feedback drivers
Signed-off-by: Anssi Hannula <anssi.hannula@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Anssi Hannula
Dmitry Torokhov
parent
224ee88fe3
commit
dc76c91214
6 changed files with 118 additions and 833 deletions
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@ -70,6 +70,7 @@ config HID_PID
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config LOGITECH_FF
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bool "Logitech WingMan *3D support"
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depends on HID_FF
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select INPUT_FF_MEMLESS if USB_HID
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help
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Say Y here if you have one of these devices:
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- Logitech WingMan Cordless RumblePad
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@ -81,6 +82,7 @@ config LOGITECH_FF
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config THRUSTMASTER_FF
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bool "ThrustMaster FireStorm Dual Power 2 support (EXPERIMENTAL)"
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depends on HID_FF && EXPERIMENTAL
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select INPUT_FF_MEMLESS if USB_HID
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help
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Say Y here if you have a THRUSTMASTER FireStore Dual Power 2,
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and want to enable force feedback support for it.
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@ -543,8 +543,6 @@ static void hid_free_device(struct hid_device *device)
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{
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unsigned i,j;
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hid_ff_exit(device);
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for (i = 0; i < HID_REPORT_TYPES; i++) {
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struct hid_report_enum *report_enum = device->report_enum + i;
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@ -729,7 +729,7 @@ static int hidinput_input_event(struct input_dev *dev, unsigned int type, unsign
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int offset;
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if (type == EV_FF)
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return hid_ff_event(hid, dev, type, code, value);
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return input_ff_event(dev, type, code, value);
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if (type != EV_LED)
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return -1;
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@ -1,12 +1,11 @@
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/*
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* $$
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*
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* Force feedback support for hid-compliant for some of the devices from
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* Logitech, namely:
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* - WingMan Cordless RumblePad
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* - WingMan Force 3D
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*
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* Copyright (c) 2002-2004 Johann Deneux
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* Copyright (c) 2006 Anssi Hannula <anssi.hannula@gmail.com>
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*/
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/*
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@ -29,495 +28,117 @@
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*/
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#include <linux/input.h>
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#include <linux/sched.h>
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//#define DEBUG
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#include <linux/usb.h>
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#include <linux/circ_buf.h>
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#include "hid.h"
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#include "../../input/fixp-arith.h"
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/* Periodicity of the update */
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#define PERIOD (HZ/10)
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#define RUN_AT(t) (jiffies + (t))
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/* Effect status */
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#define EFFECT_STARTED 0 /* Effect is going to play after some time
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(ff_replay.delay) */
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#define EFFECT_PLAYING 1 /* Effect is being played */
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#define EFFECT_USED 2
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// For lgff_device::flags
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#define DEVICE_CLOSING 0 /* The driver is being unitialised */
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/* Check that the current process can access an effect */
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#define CHECK_OWNERSHIP(effect) (current->pid == 0 \
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|| effect.owner == current->pid)
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#define LGFF_CHECK_OWNERSHIP(i, l) \
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(i>=0 && i<LGFF_EFFECTS \
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&& test_bit(EFFECT_USED, l->effects[i].flags) \
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&& CHECK_OWNERSHIP(l->effects[i]))
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#define LGFF_EFFECTS 8
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struct device_type {
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u16 idVendor;
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u16 idProduct;
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signed short *ff;
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const signed short *ff;
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};
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struct lgff_effect {
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pid_t owner;
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struct ff_effect effect;
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unsigned long flags[1];
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unsigned int count; /* Number of times left to play */
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unsigned long started_at; /* When the effect started to play */
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};
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struct lgff_device {
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struct hid_device* hid;
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struct hid_report* constant;
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struct hid_report* rumble;
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struct hid_report* condition;
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struct lgff_effect effects[LGFF_EFFECTS];
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spinlock_t lock; /* device-level lock. Having locks on
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a per-effect basis could be nice, but
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isn't really necessary */
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unsigned long flags[1]; /* Contains various information about the
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state of the driver for this device */
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struct timer_list timer;
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};
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/* Callbacks */
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static void hid_lgff_exit(struct hid_device* hid);
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static int hid_lgff_event(struct hid_device *hid, struct input_dev *input,
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unsigned int type, unsigned int code, int value);
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static int hid_lgff_flush(struct input_dev *input, struct file *file);
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static int hid_lgff_upload_effect(struct input_dev *input,
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struct ff_effect *effect);
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static int hid_lgff_erase(struct input_dev *input, int id);
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/* Local functions */
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static void hid_lgff_input_init(struct hid_device* hid);
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static void hid_lgff_timer(unsigned long timer_data);
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static struct hid_report* hid_lgff_duplicate_report(struct hid_report*);
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static void hid_lgff_delete_report(struct hid_report*);
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static signed short ff_rumble[] = {
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static const signed short ff_rumble[] = {
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FF_RUMBLE,
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-1
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};
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static signed short ff_joystick[] = {
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static const signed short ff_joystick[] = {
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FF_CONSTANT,
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-1
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};
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static struct device_type devices[] = {
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{0x046d, 0xc211, ff_rumble},
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{0x046d, 0xc219, ff_rumble},
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{0x046d, 0xc283, ff_joystick},
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{0x0000, 0x0000, ff_joystick}
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static const struct device_type devices[] = {
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{ 0x046d, 0xc211, ff_rumble },
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{ 0x046d, 0xc219, ff_rumble },
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{ 0x046d, 0xc283, ff_joystick },
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{ 0x0000, 0x0000, ff_joystick }
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};
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static int hid_lgff_play(struct input_dev *dev, void *data, struct ff_effect *effect)
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{
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struct hid_device *hid = dev->private;
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struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
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struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
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int x, y;
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unsigned int left, right;
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#define CLAMP(x) if (x < 0) x = 0; if (x > 0xff) x = 0xff
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switch (effect->type) {
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case FF_CONSTANT:
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x = effect->u.ramp.start_level + 0x7f; /* 0x7f is center */
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y = effect->u.ramp.end_level + 0x7f;
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CLAMP(x);
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CLAMP(y);
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report->field[0]->value[0] = 0x51;
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report->field[0]->value[1] = 0x08;
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report->field[0]->value[2] = x;
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report->field[0]->value[3] = y;
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dbg("(x, y)=(%04x, %04x)", x, y);
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hid_submit_report(hid, report, USB_DIR_OUT);
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break;
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case FF_RUMBLE:
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right = effect->u.rumble.strong_magnitude;
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left = effect->u.rumble.weak_magnitude;
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right = right * 0xff / 0xffff;
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left = left * 0xff / 0xffff;
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CLAMP(left);
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CLAMP(right);
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report->field[0]->value[0] = 0x42;
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report->field[0]->value[1] = 0x00;
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report->field[0]->value[2] = left;
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report->field[0]->value[3] = right;
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dbg("(left, right)=(%04x, %04x)", left, right);
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hid_submit_report(hid, report, USB_DIR_OUT);
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break;
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}
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return 0;
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}
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int hid_lgff_init(struct hid_device* hid)
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{
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struct lgff_device *private;
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struct hid_report* report;
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struct hid_field* field;
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struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
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struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
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struct input_dev *dev = hidinput->input;
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struct hid_report *report;
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struct hid_field *field;
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int error;
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int i, j;
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/* Find the report to use */
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if (list_empty(&hid->report_enum[HID_OUTPUT_REPORT].report_list)) {
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if (list_empty(report_list)) {
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err("No output report found");
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return -1;
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}
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/* Check that the report looks ok */
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report = (struct hid_report*)hid->report_enum[HID_OUTPUT_REPORT].report_list.next;
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report = list_entry(report_list->next, struct hid_report, list);
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if (!report) {
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err("NULL output report");
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return -1;
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}
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field = report->field[0];
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if (!field) {
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err("NULL field");
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return -1;
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}
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private = kzalloc(sizeof(struct lgff_device), GFP_KERNEL);
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if (!private)
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return -1;
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hid->ff_private = private;
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/* Input init */
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hid_lgff_input_init(hid);
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private->constant = hid_lgff_duplicate_report(report);
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if (!private->constant) {
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kfree(private);
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return -1;
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}
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private->constant->field[0]->value[0] = 0x51;
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private->constant->field[0]->value[1] = 0x08;
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private->constant->field[0]->value[2] = 0x7f;
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private->constant->field[0]->value[3] = 0x7f;
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private->rumble = hid_lgff_duplicate_report(report);
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if (!private->rumble) {
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hid_lgff_delete_report(private->constant);
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kfree(private);
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return -1;
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}
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private->rumble->field[0]->value[0] = 0x42;
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private->condition = hid_lgff_duplicate_report(report);
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if (!private->condition) {
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hid_lgff_delete_report(private->rumble);
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hid_lgff_delete_report(private->constant);
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kfree(private);
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return -1;
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for (i = 0; i < ARRAY_SIZE(devices); i++) {
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if (dev->id.vendor == devices[i].idVendor &&
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dev->id.product == devices[i].idProduct) {
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for (j = 0; devices[i].ff[j] >= 0; j++)
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set_bit(devices[i].ff[j], dev->ffbit);
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break;
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}
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}
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private->hid = hid;
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spin_lock_init(&private->lock);
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init_timer(&private->timer);
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private->timer.data = (unsigned long)private;
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private->timer.function = hid_lgff_timer;
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/* Event and exit callbacks */
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hid->ff_exit = hid_lgff_exit;
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hid->ff_event = hid_lgff_event;
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/* Start the update task */
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private->timer.expires = RUN_AT(PERIOD);
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add_timer(&private->timer); /*TODO: only run the timer when at least
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one effect is playing */
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error = input_ff_create_memless(dev, NULL, hid_lgff_play);
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if (error)
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return error;
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printk(KERN_INFO "Force feedback for Logitech force feedback devices by Johann Deneux <johann.deneux@it.uu.se>\n");
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return 0;
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}
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static struct hid_report* hid_lgff_duplicate_report(struct hid_report* report)
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{
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struct hid_report* ret;
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ret = kmalloc(sizeof(struct lgff_device), GFP_KERNEL);
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if (!ret)
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return NULL;
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*ret = *report;
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ret->field[0] = kmalloc(sizeof(struct hid_field), GFP_KERNEL);
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if (!ret->field[0]) {
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kfree(ret);
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return NULL;
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}
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*ret->field[0] = *report->field[0];
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ret->field[0]->value = kzalloc(sizeof(s32[8]), GFP_KERNEL);
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if (!ret->field[0]->value) {
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kfree(ret->field[0]);
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kfree(ret);
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return NULL;
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}
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return ret;
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}
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static void hid_lgff_delete_report(struct hid_report* report)
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{
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if (report) {
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kfree(report->field[0]->value);
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kfree(report->field[0]);
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kfree(report);
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}
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}
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static void hid_lgff_input_init(struct hid_device* hid)
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{
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struct device_type* dev = devices;
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signed short* ff;
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u16 idVendor = le16_to_cpu(hid->dev->descriptor.idVendor);
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u16 idProduct = le16_to_cpu(hid->dev->descriptor.idProduct);
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struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
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struct input_dev *input_dev = hidinput->input;
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while (dev->idVendor && (idVendor != dev->idVendor || idProduct != dev->idProduct))
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dev++;
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for (ff = dev->ff; *ff >= 0; ff++)
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set_bit(*ff, input_dev->ffbit);
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input_dev->upload_effect = hid_lgff_upload_effect;
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input_dev->flush = hid_lgff_flush;
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set_bit(EV_FF, input_dev->evbit);
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input_dev->ff_effects_max = LGFF_EFFECTS;
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}
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static void hid_lgff_exit(struct hid_device* hid)
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{
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struct lgff_device *lgff = hid->ff_private;
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set_bit(DEVICE_CLOSING, lgff->flags);
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del_timer_sync(&lgff->timer);
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hid_lgff_delete_report(lgff->condition);
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hid_lgff_delete_report(lgff->rumble);
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hid_lgff_delete_report(lgff->constant);
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kfree(lgff);
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}
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static int hid_lgff_event(struct hid_device *hid, struct input_dev* input,
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unsigned int type, unsigned int code, int value)
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{
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struct lgff_device *lgff = hid->ff_private;
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struct lgff_effect *effect = lgff->effects + code;
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unsigned long flags;
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if (type != EV_FF) return -EINVAL;
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if (!LGFF_CHECK_OWNERSHIP(code, lgff)) return -EACCES;
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if (value < 0) return -EINVAL;
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spin_lock_irqsave(&lgff->lock, flags);
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if (value > 0) {
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if (test_bit(EFFECT_STARTED, effect->flags)) {
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spin_unlock_irqrestore(&lgff->lock, flags);
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return -EBUSY;
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}
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if (test_bit(EFFECT_PLAYING, effect->flags)) {
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spin_unlock_irqrestore(&lgff->lock, flags);
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return -EBUSY;
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}
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effect->count = value;
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if (effect->effect.replay.delay) {
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set_bit(EFFECT_STARTED, effect->flags);
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} else {
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set_bit(EFFECT_PLAYING, effect->flags);
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}
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effect->started_at = jiffies;
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}
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else { /* value == 0 */
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clear_bit(EFFECT_STARTED, effect->flags);
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clear_bit(EFFECT_PLAYING, effect->flags);
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}
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spin_unlock_irqrestore(&lgff->lock, flags);
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return 0;
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}
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/* Erase all effects this process owns */
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static int hid_lgff_flush(struct input_dev *dev, struct file *file)
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{
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struct hid_device *hid = dev->private;
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struct lgff_device *lgff = hid->ff_private;
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int i;
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for (i=0; i<dev->ff_effects_max; ++i) {
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/*NOTE: no need to lock here. The only times EFFECT_USED is
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modified is when effects are uploaded or when an effect is
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erased. But a process cannot close its dev/input/eventX fd
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and perform ioctls on the same fd all at the same time */
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if ( current->pid == lgff->effects[i].owner
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&& test_bit(EFFECT_USED, lgff->effects[i].flags)) {
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if (hid_lgff_erase(dev, i))
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warn("erase effect %d failed", i);
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}
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}
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return 0;
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}
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static int hid_lgff_erase(struct input_dev *dev, int id)
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{
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struct hid_device *hid = dev->private;
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struct lgff_device *lgff = hid->ff_private;
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unsigned long flags;
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if (!LGFF_CHECK_OWNERSHIP(id, lgff)) return -EACCES;
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spin_lock_irqsave(&lgff->lock, flags);
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lgff->effects[id].flags[0] = 0;
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spin_unlock_irqrestore(&lgff->lock, flags);
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return 0;
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}
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static int hid_lgff_upload_effect(struct input_dev* input,
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struct ff_effect* effect)
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{
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struct hid_device *hid = input->private;
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struct lgff_device *lgff = hid->ff_private;
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struct lgff_effect new;
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int id;
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unsigned long flags;
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dbg("ioctl rumble");
|
||||
|
||||
if (!test_bit(effect->type, input->ffbit)) return -EINVAL;
|
||||
|
||||
spin_lock_irqsave(&lgff->lock, flags);
|
||||
|
||||
if (effect->id == -1) {
|
||||
int i;
|
||||
|
||||
for (i=0; i<LGFF_EFFECTS && test_bit(EFFECT_USED, lgff->effects[i].flags); ++i);
|
||||
if (i >= LGFF_EFFECTS) {
|
||||
spin_unlock_irqrestore(&lgff->lock, flags);
|
||||
return -ENOSPC;
|
||||
}
|
||||
|
||||
effect->id = i;
|
||||
lgff->effects[i].owner = current->pid;
|
||||
lgff->effects[i].flags[0] = 0;
|
||||
set_bit(EFFECT_USED, lgff->effects[i].flags);
|
||||
}
|
||||
else if (!LGFF_CHECK_OWNERSHIP(effect->id, lgff)) {
|
||||
spin_unlock_irqrestore(&lgff->lock, flags);
|
||||
return -EACCES;
|
||||
}
|
||||
|
||||
id = effect->id;
|
||||
new = lgff->effects[id];
|
||||
|
||||
new.effect = *effect;
|
||||
|
||||
if (test_bit(EFFECT_STARTED, lgff->effects[id].flags)
|
||||
|| test_bit(EFFECT_STARTED, lgff->effects[id].flags)) {
|
||||
|
||||
/* Changing replay parameters is not allowed (for the time
|
||||
being) */
|
||||
if (new.effect.replay.delay != lgff->effects[id].effect.replay.delay
|
||||
|| new.effect.replay.length != lgff->effects[id].effect.replay.length) {
|
||||
spin_unlock_irqrestore(&lgff->lock, flags);
|
||||
return -ENOSYS;
|
||||
}
|
||||
|
||||
lgff->effects[id] = new;
|
||||
|
||||
} else {
|
||||
lgff->effects[id] = new;
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(&lgff->lock, flags);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void hid_lgff_timer(unsigned long timer_data)
|
||||
{
|
||||
struct lgff_device *lgff = (struct lgff_device*)timer_data;
|
||||
struct hid_device *hid = lgff->hid;
|
||||
unsigned long flags;
|
||||
int x = 0x7f, y = 0x7f; // Coordinates of constant effects
|
||||
unsigned int left = 0, right = 0; // Rumbling
|
||||
int i;
|
||||
|
||||
spin_lock_irqsave(&lgff->lock, flags);
|
||||
|
||||
for (i=0; i<LGFF_EFFECTS; ++i) {
|
||||
struct lgff_effect* effect = lgff->effects +i;
|
||||
|
||||
if (test_bit(EFFECT_PLAYING, effect->flags)) {
|
||||
|
||||
switch (effect->effect.type) {
|
||||
case FF_CONSTANT: {
|
||||
//TODO: handle envelopes
|
||||
int degrees = effect->effect.direction * 360 >> 16;
|
||||
x += fixp_mult(fixp_sin(degrees),
|
||||
fixp_new16(effect->effect.u.constant.level));
|
||||
y += fixp_mult(-fixp_cos(degrees),
|
||||
fixp_new16(effect->effect.u.constant.level));
|
||||
} break;
|
||||
case FF_RUMBLE:
|
||||
right += effect->effect.u.rumble.strong_magnitude;
|
||||
left += effect->effect.u.rumble.weak_magnitude;
|
||||
break;
|
||||
};
|
||||
|
||||
/* One run of the effect is finished playing */
|
||||
if (time_after(jiffies,
|
||||
effect->started_at
|
||||
+ effect->effect.replay.delay*HZ/1000
|
||||
+ effect->effect.replay.length*HZ/1000)) {
|
||||
dbg("Finished playing once %d", i);
|
||||
if (--effect->count <= 0) {
|
||||
dbg("Stopped %d", i);
|
||||
clear_bit(EFFECT_PLAYING, effect->flags);
|
||||
}
|
||||
else {
|
||||
dbg("Start again %d", i);
|
||||
if (effect->effect.replay.length != 0) {
|
||||
clear_bit(EFFECT_PLAYING, effect->flags);
|
||||
set_bit(EFFECT_STARTED, effect->flags);
|
||||
}
|
||||
effect->started_at = jiffies;
|
||||
}
|
||||
}
|
||||
|
||||
} else if (test_bit(EFFECT_STARTED, lgff->effects[i].flags)) {
|
||||
/* Check if we should start playing the effect */
|
||||
if (time_after(jiffies,
|
||||
lgff->effects[i].started_at
|
||||
+ lgff->effects[i].effect.replay.delay*HZ/1000)) {
|
||||
dbg("Now playing %d", i);
|
||||
clear_bit(EFFECT_STARTED, lgff->effects[i].flags);
|
||||
set_bit(EFFECT_PLAYING, lgff->effects[i].flags);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#define CLAMP(x) if (x < 0) x = 0; if (x > 0xff) x = 0xff
|
||||
|
||||
// Clamp values
|
||||
CLAMP(x);
|
||||
CLAMP(y);
|
||||
CLAMP(left);
|
||||
CLAMP(right);
|
||||
|
||||
#undef CLAMP
|
||||
|
||||
if (x != lgff->constant->field[0]->value[2]
|
||||
|| y != lgff->constant->field[0]->value[3]) {
|
||||
lgff->constant->field[0]->value[2] = x;
|
||||
lgff->constant->field[0]->value[3] = y;
|
||||
dbg("(x,y)=(%04x, %04x)", x, y);
|
||||
hid_submit_report(hid, lgff->constant, USB_DIR_OUT);
|
||||
}
|
||||
|
||||
if (left != lgff->rumble->field[0]->value[2]
|
||||
|| right != lgff->rumble->field[0]->value[3]) {
|
||||
lgff->rumble->field[0]->value[2] = left;
|
||||
lgff->rumble->field[0]->value[3] = right;
|
||||
dbg("(left,right)=(%04x, %04x)", left, right);
|
||||
hid_submit_report(hid, lgff->rumble, USB_DIR_OUT);
|
||||
}
|
||||
|
||||
if (!test_bit(DEVICE_CLOSING, lgff->flags)) {
|
||||
lgff->timer.expires = RUN_AT(PERIOD);
|
||||
add_timer(&lgff->timer);
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(&lgff->lock, flags);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -28,97 +28,65 @@
|
|||
*/
|
||||
|
||||
#include <linux/input.h>
|
||||
#include <linux/sched.h>
|
||||
|
||||
#undef DEBUG
|
||||
#include <linux/usb.h>
|
||||
|
||||
#include <linux/circ_buf.h>
|
||||
|
||||
#include "hid.h"
|
||||
#include "../../input/fixp-arith.h"
|
||||
|
||||
/* Usages for thrustmaster devices I know about */
|
||||
#define THRUSTMASTER_USAGE_RUMBLE_LR (HID_UP_GENDESK | 0xbb)
|
||||
#define DELAY_CALC(t,delay) ((t) + (delay)*HZ/1000)
|
||||
|
||||
/* Effect status */
|
||||
#define EFFECT_STARTED 0 /* Effect is going to play after some time */
|
||||
#define EFFECT_PLAYING 1 /* Effect is playing */
|
||||
#define EFFECT_USED 2
|
||||
|
||||
/* For tmff_device::flags */
|
||||
#define DEVICE_CLOSING 0 /* The driver is being unitialised */
|
||||
|
||||
/* Check that the current process can access an effect */
|
||||
#define CHECK_OWNERSHIP(effect) (current->pid == 0 \
|
||||
|| effect.owner == current->pid)
|
||||
|
||||
#define TMFF_CHECK_ID(id) ((id) >= 0 && (id) < TMFF_EFFECTS)
|
||||
|
||||
#define TMFF_CHECK_OWNERSHIP(i, l) \
|
||||
(test_bit(EFFECT_USED, l->effects[i].flags) \
|
||||
&& CHECK_OWNERSHIP(l->effects[i]))
|
||||
|
||||
#define TMFF_EFFECTS 8
|
||||
|
||||
struct tmff_effect {
|
||||
pid_t owner;
|
||||
|
||||
struct ff_effect effect;
|
||||
|
||||
unsigned long flags[1];
|
||||
unsigned int count; /* Number of times left to play */
|
||||
|
||||
unsigned long play_at; /* When the effect starts to play */
|
||||
unsigned long stop_at; /* When the effect ends */
|
||||
};
|
||||
|
||||
struct tmff_device {
|
||||
struct hid_device *hid;
|
||||
|
||||
struct hid_report *report;
|
||||
|
||||
struct hid_field *rumble;
|
||||
|
||||
unsigned int effects_playing;
|
||||
struct tmff_effect effects[TMFF_EFFECTS];
|
||||
spinlock_t lock; /* device-level lock. Having locks on
|
||||
a per-effect basis could be nice, but
|
||||
isn't really necessary */
|
||||
|
||||
unsigned long flags[1]; /* Contains various information about the
|
||||
state of the driver for this device */
|
||||
|
||||
struct timer_list timer;
|
||||
};
|
||||
|
||||
/* Callbacks */
|
||||
static void hid_tmff_exit(struct hid_device *hid);
|
||||
static int hid_tmff_event(struct hid_device *hid, struct input_dev *input,
|
||||
unsigned int type, unsigned int code, int value);
|
||||
static int hid_tmff_flush(struct input_dev *input, struct file *file);
|
||||
static int hid_tmff_upload_effect(struct input_dev *input,
|
||||
struct ff_effect *effect);
|
||||
static int hid_tmff_erase(struct input_dev *input, int id);
|
||||
/* Changes values from 0 to 0xffff into values from minimum to maximum */
|
||||
static inline int hid_tmff_scale(unsigned int in, int minimum, int maximum)
|
||||
{
|
||||
int ret;
|
||||
|
||||
/* Local functions */
|
||||
static void hid_tmff_recalculate_timer(struct tmff_device *tmff);
|
||||
static void hid_tmff_timer(unsigned long timer_data);
|
||||
ret = (in * (maximum - minimum) / 0xffff) + minimum;
|
||||
if (ret < minimum)
|
||||
return minimum;
|
||||
if (ret > maximum)
|
||||
return maximum;
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int hid_tmff_play(struct input_dev *dev, void *data, struct ff_effect *effect)
|
||||
{
|
||||
struct hid_device *hid = dev->private;
|
||||
struct tmff_device *tmff = data;
|
||||
int left, right; /* Rumbling */
|
||||
|
||||
left = hid_tmff_scale(effect->u.rumble.weak_magnitude,
|
||||
tmff->rumble->logical_minimum, tmff->rumble->logical_maximum);
|
||||
right = hid_tmff_scale(effect->u.rumble.strong_magnitude,
|
||||
tmff->rumble->logical_minimum, tmff->rumble->logical_maximum);
|
||||
|
||||
tmff->rumble->value[0] = left;
|
||||
tmff->rumble->value[1] = right;
|
||||
dbg("(left,right)=(%08x, %08x)", left, right);
|
||||
hid_submit_report(hid, tmff->report, USB_DIR_OUT);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int hid_tmff_init(struct hid_device *hid)
|
||||
{
|
||||
struct tmff_device *private;
|
||||
struct tmff_device *tmff;
|
||||
struct list_head *pos;
|
||||
struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
|
||||
struct input_dev *input_dev = hidinput->input;
|
||||
int error;
|
||||
|
||||
private = kzalloc(sizeof(struct tmff_device), GFP_KERNEL);
|
||||
if (!private)
|
||||
tmff = kzalloc(sizeof(struct tmff_device), GFP_KERNEL);
|
||||
if (!tmff)
|
||||
return -ENOMEM;
|
||||
|
||||
hid->ff_private = private;
|
||||
|
||||
/* Find the report to use */
|
||||
__list_for_each(pos, &hid->report_enum[HID_OUTPUT_REPORT].report_list) {
|
||||
struct hid_report *report = (struct hid_report *)pos;
|
||||
|
|
@ -142,18 +110,18 @@ int hid_tmff_init(struct hid_device *hid)
|
|||
continue;
|
||||
}
|
||||
|
||||
if (private->report && private->report != report) {
|
||||
if (tmff->report && tmff->report != report) {
|
||||
warn("ignoring THRUSTMASTER_USAGE_RUMBLE_LR in other report");
|
||||
continue;
|
||||
}
|
||||
|
||||
if (private->rumble && private->rumble != field) {
|
||||
if (tmff->rumble && tmff->rumble != field) {
|
||||
warn("ignoring duplicate THRUSTMASTER_USAGE_RUMBLE_LR");
|
||||
continue;
|
||||
}
|
||||
|
||||
private->report = report;
|
||||
private->rumble = field;
|
||||
tmff->report = report;
|
||||
tmff->rumble = field;
|
||||
|
||||
set_bit(FF_RUMBLE, input_dev->ffbit);
|
||||
break;
|
||||
|
|
@ -162,302 +130,17 @@ int hid_tmff_init(struct hid_device *hid)
|
|||
warn("ignoring unknown output usage %08x", field->usage[0].hid);
|
||||
continue;
|
||||
}
|
||||
|
||||
/* Fallthrough to here only when a valid usage is found */
|
||||
input_dev->upload_effect = hid_tmff_upload_effect;
|
||||
input_dev->flush = hid_tmff_flush;
|
||||
|
||||
set_bit(EV_FF, input_dev->evbit);
|
||||
input_dev->ff_effects_max = TMFF_EFFECTS;
|
||||
}
|
||||
}
|
||||
|
||||
private->hid = hid;
|
||||
|
||||
spin_lock_init(&private->lock);
|
||||
init_timer(&private->timer);
|
||||
private->timer.data = (unsigned long)private;
|
||||
private->timer.function = hid_tmff_timer;
|
||||
|
||||
/* Event and exit callbacks */
|
||||
hid->ff_exit = hid_tmff_exit;
|
||||
hid->ff_event = hid_tmff_event;
|
||||
error = input_ff_create_memless(input_dev, tmff, hid_tmff_play);
|
||||
if (error) {
|
||||
kfree(tmff);
|
||||
return error;
|
||||
}
|
||||
|
||||
info("Force feedback for ThrustMaster rumble pad devices by Zinx Verituse <zinx@epicsol.org>");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void hid_tmff_exit(struct hid_device *hid)
|
||||
{
|
||||
struct tmff_device *tmff = hid->ff_private;
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&tmff->lock, flags);
|
||||
|
||||
set_bit(DEVICE_CLOSING, tmff->flags);
|
||||
del_timer_sync(&tmff->timer);
|
||||
|
||||
spin_unlock_irqrestore(&tmff->lock, flags);
|
||||
|
||||
kfree(tmff);
|
||||
}
|
||||
|
||||
static int hid_tmff_event(struct hid_device *hid, struct input_dev *input,
|
||||
unsigned int type, unsigned int code, int value)
|
||||
{
|
||||
struct tmff_device *tmff = hid->ff_private;
|
||||
struct tmff_effect *effect = &tmff->effects[code];
|
||||
unsigned long flags;
|
||||
|
||||
if (type != EV_FF)
|
||||
return -EINVAL;
|
||||
if (!TMFF_CHECK_ID(code))
|
||||
return -EINVAL;
|
||||
if (!TMFF_CHECK_OWNERSHIP(code, tmff))
|
||||
return -EACCES;
|
||||
if (value < 0)
|
||||
return -EINVAL;
|
||||
|
||||
spin_lock_irqsave(&tmff->lock, flags);
|
||||
|
||||
if (value > 0) {
|
||||
set_bit(EFFECT_STARTED, effect->flags);
|
||||
clear_bit(EFFECT_PLAYING, effect->flags);
|
||||
effect->count = value;
|
||||
effect->play_at = DELAY_CALC(jiffies, effect->effect.replay.delay);
|
||||
} else {
|
||||
clear_bit(EFFECT_STARTED, effect->flags);
|
||||
clear_bit(EFFECT_PLAYING, effect->flags);
|
||||
}
|
||||
|
||||
hid_tmff_recalculate_timer(tmff);
|
||||
|
||||
spin_unlock_irqrestore(&tmff->lock, flags);
|
||||
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
/* Erase all effects this process owns */
|
||||
|
||||
static int hid_tmff_flush(struct input_dev *dev, struct file *file)
|
||||
{
|
||||
struct hid_device *hid = dev->private;
|
||||
struct tmff_device *tmff = hid->ff_private;
|
||||
int i;
|
||||
|
||||
for (i=0; i<dev->ff_effects_max; ++i)
|
||||
|
||||
/* NOTE: no need to lock here. The only times EFFECT_USED is
|
||||
modified is when effects are uploaded or when an effect is
|
||||
erased. But a process cannot close its dev/input/eventX fd
|
||||
and perform ioctls on the same fd all at the same time */
|
||||
|
||||
if (current->pid == tmff->effects[i].owner
|
||||
&& test_bit(EFFECT_USED, tmff->effects[i].flags))
|
||||
if (hid_tmff_erase(dev, i))
|
||||
warn("erase effect %d failed", i);
|
||||
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int hid_tmff_erase(struct input_dev *dev, int id)
|
||||
{
|
||||
struct hid_device *hid = dev->private;
|
||||
struct tmff_device *tmff = hid->ff_private;
|
||||
unsigned long flags;
|
||||
|
||||
if (!TMFF_CHECK_ID(id))
|
||||
return -EINVAL;
|
||||
if (!TMFF_CHECK_OWNERSHIP(id, tmff))
|
||||
return -EACCES;
|
||||
|
||||
spin_lock_irqsave(&tmff->lock, flags);
|
||||
|
||||
tmff->effects[id].flags[0] = 0;
|
||||
hid_tmff_recalculate_timer(tmff);
|
||||
|
||||
spin_unlock_irqrestore(&tmff->lock, flags);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int hid_tmff_upload_effect(struct input_dev *input,
|
||||
struct ff_effect *effect)
|
||||
{
|
||||
struct hid_device *hid = input->private;
|
||||
struct tmff_device *tmff = hid->ff_private;
|
||||
int id;
|
||||
unsigned long flags;
|
||||
|
||||
if (!test_bit(effect->type, input->ffbit))
|
||||
return -EINVAL;
|
||||
if (effect->id != -1 && !TMFF_CHECK_ID(effect->id))
|
||||
return -EINVAL;
|
||||
|
||||
spin_lock_irqsave(&tmff->lock, flags);
|
||||
|
||||
if (effect->id == -1) {
|
||||
/* Find a free effect */
|
||||
for (id = 0; id < TMFF_EFFECTS && test_bit(EFFECT_USED, tmff->effects[id].flags); ++id);
|
||||
|
||||
if (id >= TMFF_EFFECTS) {
|
||||
spin_unlock_irqrestore(&tmff->lock, flags);
|
||||
return -ENOSPC;
|
||||
}
|
||||
|
||||
effect->id = id;
|
||||
tmff->effects[id].owner = current->pid;
|
||||
tmff->effects[id].flags[0] = 0;
|
||||
set_bit(EFFECT_USED, tmff->effects[id].flags);
|
||||
|
||||
} else {
|
||||
/* Re-uploading an owned effect, to change parameters */
|
||||
id = effect->id;
|
||||
clear_bit(EFFECT_PLAYING, tmff->effects[id].flags);
|
||||
}
|
||||
|
||||
tmff->effects[id].effect = *effect;
|
||||
|
||||
hid_tmff_recalculate_timer(tmff);
|
||||
|
||||
spin_unlock_irqrestore(&tmff->lock, flags);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Start the timer for the next start/stop/delay */
|
||||
/* Always call this while tmff->lock is locked */
|
||||
|
||||
static void hid_tmff_recalculate_timer(struct tmff_device *tmff)
|
||||
{
|
||||
int i;
|
||||
int events = 0;
|
||||
unsigned long next_time;
|
||||
|
||||
next_time = 0; /* Shut up compiler's incorrect warning */
|
||||
|
||||
/* Find the next change in an effect's status */
|
||||
for (i = 0; i < TMFF_EFFECTS; ++i) {
|
||||
struct tmff_effect *effect = &tmff->effects[i];
|
||||
unsigned long play_time;
|
||||
|
||||
if (!test_bit(EFFECT_STARTED, effect->flags))
|
||||
continue;
|
||||
|
||||
effect->stop_at = DELAY_CALC(effect->play_at, effect->effect.replay.length);
|
||||
|
||||
if (!test_bit(EFFECT_PLAYING, effect->flags))
|
||||
play_time = effect->play_at;
|
||||
else
|
||||
play_time = effect->stop_at;
|
||||
|
||||
events++;
|
||||
|
||||
if (time_after(jiffies, play_time))
|
||||
play_time = jiffies;
|
||||
|
||||
if (events == 1)
|
||||
next_time = play_time;
|
||||
else {
|
||||
if (time_after(next_time, play_time))
|
||||
next_time = play_time;
|
||||
}
|
||||
}
|
||||
|
||||
if (!events && tmff->effects_playing) {
|
||||
/* Treat all effects turning off as an event */
|
||||
events = 1;
|
||||
next_time = jiffies;
|
||||
}
|
||||
|
||||
if (!events) {
|
||||
/* No events, no time, no need for a timer. */
|
||||
del_timer_sync(&tmff->timer);
|
||||
return;
|
||||
}
|
||||
|
||||
mod_timer(&tmff->timer, next_time);
|
||||
}
|
||||
|
||||
/* Changes values from 0 to 0xffff into values from minimum to maximum */
|
||||
static inline int hid_tmff_scale(unsigned int in, int minimum, int maximum)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = (in * (maximum - minimum) / 0xffff) + minimum;
|
||||
if (ret < minimum)
|
||||
return minimum;
|
||||
if (ret > maximum)
|
||||
return maximum;
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void hid_tmff_timer(unsigned long timer_data)
|
||||
{
|
||||
struct tmff_device *tmff = (struct tmff_device *) timer_data;
|
||||
struct hid_device *hid = tmff->hid;
|
||||
unsigned long flags;
|
||||
int left = 0, right = 0; /* Rumbling */
|
||||
int i;
|
||||
|
||||
spin_lock_irqsave(&tmff->lock, flags);
|
||||
|
||||
tmff->effects_playing = 0;
|
||||
|
||||
for (i = 0; i < TMFF_EFFECTS; ++i) {
|
||||
struct tmff_effect *effect = &tmff->effects[i];
|
||||
|
||||
if (!test_bit(EFFECT_STARTED, effect->flags))
|
||||
continue;
|
||||
|
||||
if (!time_after(jiffies, effect->play_at))
|
||||
continue;
|
||||
|
||||
if (time_after(jiffies, effect->stop_at)) {
|
||||
|
||||
dbg("Finished playing once %d", i);
|
||||
clear_bit(EFFECT_PLAYING, effect->flags);
|
||||
|
||||
if (--effect->count <= 0) {
|
||||
dbg("Stopped %d", i);
|
||||
clear_bit(EFFECT_STARTED, effect->flags);
|
||||
continue;
|
||||
} else {
|
||||
dbg("Start again %d", i);
|
||||
effect->play_at = DELAY_CALC(jiffies, effect->effect.replay.delay);
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
||||
++tmff->effects_playing;
|
||||
|
||||
set_bit(EFFECT_PLAYING, effect->flags);
|
||||
|
||||
switch (effect->effect.type) {
|
||||
case FF_RUMBLE:
|
||||
right += effect->effect.u.rumble.strong_magnitude;
|
||||
left += effect->effect.u.rumble.weak_magnitude;
|
||||
break;
|
||||
default:
|
||||
BUG();
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
left = hid_tmff_scale(left, tmff->rumble->logical_minimum, tmff->rumble->logical_maximum);
|
||||
right = hid_tmff_scale(right, tmff->rumble->logical_minimum, tmff->rumble->logical_maximum);
|
||||
|
||||
if (left != tmff->rumble->value[0] || right != tmff->rumble->value[1]) {
|
||||
tmff->rumble->value[0] = left;
|
||||
tmff->rumble->value[1] = right;
|
||||
dbg("(left,right)=(%08x, %08x)", left, right);
|
||||
hid_submit_report(hid, tmff->report, USB_DIR_OUT);
|
||||
}
|
||||
|
||||
if (!test_bit(DEVICE_CLOSING, tmff->flags))
|
||||
hid_tmff_recalculate_timer(tmff);
|
||||
|
||||
spin_unlock_irqrestore(&tmff->lock, flags);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -449,11 +449,6 @@ struct hid_device { /* device report descriptor */
|
|||
char phys[64]; /* Device physical location */
|
||||
char uniq[64]; /* Device unique identifier (serial #) */
|
||||
|
||||
void *ff_private; /* Private data for the force-feedback driver */
|
||||
void (*ff_exit)(struct hid_device*); /* Called by hid_exit_ff(hid) */
|
||||
int (*ff_event)(struct hid_device *hid, struct input_dev *input,
|
||||
unsigned int type, unsigned int code, int value);
|
||||
|
||||
#ifdef CONFIG_USB_HIDINPUT_POWERBOOK
|
||||
unsigned long pb_pressed_fn[NBITS(KEY_MAX)];
|
||||
unsigned long pb_pressed_numlock[NBITS(KEY_MAX)];
|
||||
|
|
@ -540,17 +535,3 @@ static inline int hid_pidff_init(struct hid_device *hid) { return -ENODEV; }
|
|||
static inline int hid_ff_init(struct hid_device *hid) { return -1; }
|
||||
#endif
|
||||
|
||||
static inline void hid_ff_exit(struct hid_device *hid)
|
||||
{
|
||||
if (hid->ff_exit)
|
||||
hid->ff_exit(hid);
|
||||
}
|
||||
|
||||
static inline int hid_ff_event(struct hid_device *hid, struct input_dev *input,
|
||||
unsigned int type, unsigned int code, int value)
|
||||
{
|
||||
if (hid->ff_event)
|
||||
return hid->ff_event(hid, input, type, code, value);
|
||||
return -ENOSYS;
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue