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hid-bigbenff.c
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hid-bigbenff.c
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// SPDX-License-Identifier: GPL-2.0+
/*
* LED & force feedback support for BigBen Interactive
*
* 0x146b:0x0902 "Bigben Interactive Bigben Game Pad"
* "Kid-friendly Wired Controller" PS3OFMINIPAD SONY
* sold for use with the PS3
*
* Copyright (c) 2018 Hanno Zulla <[email protected]>
*/
#include <linux/input.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/leds.h>
#include <linux/hid.h>
#include "hid-ids.h"
/*
* The original descriptor for 0x146b:0x0902
*
* 0x05, 0x01, // Usage Page (Generic Desktop Ctrls)
* 0x09, 0x05, // Usage (Game Pad)
* 0xA1, 0x01, // Collection (Application)
* 0x15, 0x00, // Logical Minimum (0)
* 0x25, 0x01, // Logical Maximum (1)
* 0x35, 0x00, // Physical Minimum (0)
* 0x45, 0x01, // Physical Maximum (1)
* 0x75, 0x01, // Report Size (1)
* 0x95, 0x0D, // Report Count (13)
* 0x05, 0x09, // Usage Page (Button)
* 0x19, 0x01, // Usage Minimum (0x01)
* 0x29, 0x0D, // Usage Maximum (0x0D)
* 0x81, 0x02, // Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
* 0x95, 0x03, // Report Count (3)
* 0x81, 0x01, // Input (Const,Array,Abs,No Wrap,Linear,Preferred State,No Null Position)
* 0x05, 0x01, // Usage Page (Generic Desktop Ctrls)
* 0x25, 0x07, // Logical Maximum (7)
* 0x46, 0x3B, 0x01, // Physical Maximum (315)
* 0x75, 0x04, // Report Size (4)
* 0x95, 0x01, // Report Count (1)
* 0x65, 0x14, // Unit (System: English Rotation, Length: Centimeter)
* 0x09, 0x39, // Usage (Hat switch)
* 0x81, 0x42, // Input (Data,Var,Abs,No Wrap,Linear,Preferred State,Null State)
* 0x65, 0x00, // Unit (None)
* 0x95, 0x01, // Report Count (1)
* 0x81, 0x01, // Input (Const,Array,Abs,No Wrap,Linear,Preferred State,No Null Position)
* 0x26, 0xFF, 0x00, // Logical Maximum (255)
* 0x46, 0xFF, 0x00, // Physical Maximum (255)
* 0x09, 0x30, // Usage (X)
* 0x09, 0x31, // Usage (Y)
* 0x09, 0x32, // Usage (Z)
* 0x09, 0x35, // Usage (Rz)
* 0x75, 0x08, // Report Size (8)
* 0x95, 0x04, // Report Count (4)
* 0x81, 0x02, // Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
* 0x06, 0x00, 0xFF, // Usage Page (Vendor Defined 0xFF00)
* 0x09, 0x20, // Usage (0x20)
* 0x09, 0x21, // Usage (0x21)
* 0x09, 0x22, // Usage (0x22)
* 0x09, 0x23, // Usage (0x23)
* 0x09, 0x24, // Usage (0x24)
* 0x09, 0x25, // Usage (0x25)
* 0x09, 0x26, // Usage (0x26)
* 0x09, 0x27, // Usage (0x27)
* 0x09, 0x28, // Usage (0x28)
* 0x09, 0x29, // Usage (0x29)
* 0x09, 0x2A, // Usage (0x2A)
* 0x09, 0x2B, // Usage (0x2B)
* 0x95, 0x0C, // Report Count (12)
* 0x81, 0x02, // Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
* 0x0A, 0x21, 0x26, // Usage (0x2621)
* 0x95, 0x08, // Report Count (8)
* 0xB1, 0x02, // Feature (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
* 0x0A, 0x21, 0x26, // Usage (0x2621)
* 0x91, 0x02, // Output (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
* 0x26, 0xFF, 0x03, // Logical Maximum (1023)
* 0x46, 0xFF, 0x03, // Physical Maximum (1023)
* 0x09, 0x2C, // Usage (0x2C)
* 0x09, 0x2D, // Usage (0x2D)
* 0x09, 0x2E, // Usage (0x2E)
* 0x09, 0x2F, // Usage (0x2F)
* 0x75, 0x10, // Report Size (16)
* 0x95, 0x04, // Report Count (4)
* 0x81, 0x02, // Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
* 0xC0, // End Collection
*/
#define PID0902_RDESC_ORIG_SIZE 137
/*
* The fixed descriptor for 0x146b:0x0902
*
* - map buttons according to gamepad.rst
* - assign right stick from Z/Rz to Rx/Ry
* - map previously unused analog trigger data to Z/RZ
* - simplify feature and output descriptor
*/
static __u8 pid0902_rdesc_fixed[] = {
0x05, 0x01, /* Usage Page (Generic Desktop Ctrls) */
0x09, 0x05, /* Usage (Game Pad) */
0xA1, 0x01, /* Collection (Application) */
0x15, 0x00, /* Logical Minimum (0) */
0x25, 0x01, /* Logical Maximum (1) */
0x35, 0x00, /* Physical Minimum (0) */
0x45, 0x01, /* Physical Maximum (1) */
0x75, 0x01, /* Report Size (1) */
0x95, 0x0D, /* Report Count (13) */
0x05, 0x09, /* Usage Page (Button) */
0x09, 0x05, /* Usage (BTN_WEST) */
0x09, 0x01, /* Usage (BTN_SOUTH) */
0x09, 0x02, /* Usage (BTN_EAST) */
0x09, 0x04, /* Usage (BTN_NORTH) */
0x09, 0x07, /* Usage (BTN_TL) */
0x09, 0x08, /* Usage (BTN_TR) */
0x09, 0x09, /* Usage (BTN_TL2) */
0x09, 0x0A, /* Usage (BTN_TR2) */
0x09, 0x0B, /* Usage (BTN_SELECT) */
0x09, 0x0C, /* Usage (BTN_START) */
0x09, 0x0E, /* Usage (BTN_THUMBL) */
0x09, 0x0F, /* Usage (BTN_THUMBR) */
0x09, 0x0D, /* Usage (BTN_MODE) */
0x81, 0x02, /* Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position) */
0x75, 0x01, /* Report Size (1) */
0x95, 0x03, /* Report Count (3) */
0x81, 0x01, /* Input (Const,Array,Abs,No Wrap,Linear,Preferred State,No Null Position) */
0x05, 0x01, /* Usage Page (Generic Desktop Ctrls) */
0x25, 0x07, /* Logical Maximum (7) */
0x46, 0x3B, 0x01, /* Physical Maximum (315) */
0x75, 0x04, /* Report Size (4) */
0x95, 0x01, /* Report Count (1) */
0x65, 0x14, /* Unit (System: English Rotation, Length: Centimeter) */
0x09, 0x39, /* Usage (Hat switch) */
0x81, 0x42, /* Input (Data,Var,Abs,No Wrap,Linear,Preferred State,Null State) */
0x65, 0x00, /* Unit (None) */
0x95, 0x01, /* Report Count (1) */
0x81, 0x01, /* Input (Const,Array,Abs,No Wrap,Linear,Preferred State,No Null Position) */
0x26, 0xFF, 0x00, /* Logical Maximum (255) */
0x46, 0xFF, 0x00, /* Physical Maximum (255) */
0x09, 0x30, /* Usage (X) */
0x09, 0x31, /* Usage (Y) */
0x09, 0x33, /* Usage (Rx) */
0x09, 0x34, /* Usage (Ry) */
0x75, 0x08, /* Report Size (8) */
0x95, 0x04, /* Report Count (4) */
0x81, 0x02, /* Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position) */
0x95, 0x0A, /* Report Count (10) */
0x81, 0x01, /* Input (Const,Array,Abs,No Wrap,Linear,Preferred State,No Null Position) */
0x05, 0x01, /* Usage Page (Generic Desktop Ctrls) */
0x26, 0xFF, 0x00, /* Logical Maximum (255) */
0x46, 0xFF, 0x00, /* Physical Maximum (255) */
0x09, 0x32, /* Usage (Z) */
0x09, 0x35, /* Usage (Rz) */
0x95, 0x02, /* Report Count (2) */
0x81, 0x02, /* Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position) */
0x95, 0x08, /* Report Count (8) */
0x81, 0x01, /* Input (Const,Array,Abs,No Wrap,Linear,Preferred State,No Null Position) */
0x06, 0x00, 0xFF, /* Usage Page (Vendor Defined 0xFF00) */
0xB1, 0x02, /* Feature (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile) */
0x0A, 0x21, 0x26, /* Usage (0x2621) */
0x95, 0x08, /* Report Count (8) */
0x91, 0x02, /* Output (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile) */
0x0A, 0x21, 0x26, /* Usage (0x2621) */
0x95, 0x08, /* Report Count (8) */
0x81, 0x02, /* Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position) */
0xC0, /* End Collection */
};
#define NUM_LEDS 4
struct bigben_device {
struct hid_device *hid;
struct hid_report *report;
u8 led_state; /* LED1 = 1 .. LED4 = 8 */
u8 right_motor_on; /* right motor off/on 0/1 */
u8 left_motor_force; /* left motor force 0-255 */
struct led_classdev *leds[NUM_LEDS];
bool work_led;
bool work_ff;
struct work_struct worker;
};
static void bigben_worker(struct work_struct *work)
{
struct bigben_device *bigben = container_of(work,
struct bigben_device, worker);
struct hid_field *report_field = bigben->report->field[0];
if (bigben->work_led) {
bigben->work_led = false;
report_field->value[0] = 0x01; /* 1 = led message */
report_field->value[1] = 0x08; /* reserved value, always 8 */
report_field->value[2] = bigben->led_state;
report_field->value[3] = 0x00; /* padding */
report_field->value[4] = 0x00; /* padding */
report_field->value[5] = 0x00; /* padding */
report_field->value[6] = 0x00; /* padding */
report_field->value[7] = 0x00; /* padding */
hid_hw_request(bigben->hid, bigben->report, HID_REQ_SET_REPORT);
}
if (bigben->work_ff) {
bigben->work_ff = false;
report_field->value[0] = 0x02; /* 2 = rumble effect message */
report_field->value[1] = 0x08; /* reserved value, always 8 */
report_field->value[2] = bigben->right_motor_on;
report_field->value[3] = bigben->left_motor_force;
report_field->value[4] = 0xff; /* duration 0-254 (255 = nonstop) */
report_field->value[5] = 0x00; /* padding */
report_field->value[6] = 0x00; /* padding */
report_field->value[7] = 0x00; /* padding */
hid_hw_request(bigben->hid, bigben->report, HID_REQ_SET_REPORT);
}
}
static int hid_bigben_play_effect(struct input_dev *dev, void *data,
struct ff_effect *effect)
{
struct bigben_device *bigben = data;
u8 right_motor_on;
u8 left_motor_force;
if (effect->type != FF_RUMBLE)
return 0;
right_motor_on = effect->u.rumble.weak_magnitude ? 1 : 0;
left_motor_force = effect->u.rumble.strong_magnitude / 256;
if (right_motor_on != bigben->right_motor_on ||
left_motor_force != bigben->left_motor_force) {
bigben->right_motor_on = right_motor_on;
bigben->left_motor_force = left_motor_force;
bigben->work_ff = true;
schedule_work(&bigben->worker);
}
return 0;
}
static void bigben_set_led(struct led_classdev *led,
enum led_brightness value)
{
struct device *dev = led->dev->parent;
struct hid_device *hid = to_hid_device(dev);
struct bigben_device *bigben = hid_get_drvdata(hid);
int n;
bool work;
if (!bigben) {
hid_err(hid, "no device data\n");
return;
}
for (n = 0; n < NUM_LEDS; n++) {
if (led == bigben->leds[n]) {
if (value == LED_OFF) {
work = (bigben->led_state & BIT(n));
bigben->led_state &= ~BIT(n);
} else {
work = !(bigben->led_state & BIT(n));
bigben->led_state |= BIT(n);
}
if (work) {
bigben->work_led = true;
schedule_work(&bigben->worker);
}
return;
}
}
}
static enum led_brightness bigben_get_led(struct led_classdev *led)
{
struct device *dev = led->dev->parent;
struct hid_device *hid = to_hid_device(dev);
struct bigben_device *bigben = hid_get_drvdata(hid);
int n;
if (!bigben) {
hid_err(hid, "no device data\n");
return LED_OFF;
}
for (n = 0; n < NUM_LEDS; n++) {
if (led == bigben->leds[n])
return (bigben->led_state & BIT(n)) ? LED_ON : LED_OFF;
}
return LED_OFF;
}
static void bigben_remove(struct hid_device *hid)
{
struct bigben_device *bigben = hid_get_drvdata(hid);
cancel_work_sync(&bigben->worker);
hid_hw_close(hid);
hid_hw_stop(hid);
}
static int bigben_probe(struct hid_device *hid,
const struct hid_device_id *id)
{
struct bigben_device *bigben;
struct hid_input *hidinput;
struct list_head *report_list;
struct led_classdev *led;
char *name;
size_t name_sz;
int n, error;
bigben = devm_kzalloc(&hid->dev, sizeof(*bigben), GFP_KERNEL);
if (!bigben)
return -ENOMEM;
hid_set_drvdata(hid, bigben);
bigben->hid = hid;
error = hid_parse(hid);
if (error) {
hid_err(hid, "parse failed\n");
return error;
}
error = hid_hw_start(hid, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
if (error) {
hid_err(hid, "hw start failed\n");
return error;
}
report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
bigben->report = list_entry(report_list->next,
struct hid_report, list);
hidinput = list_first_entry(&hid->inputs, struct hid_input, list);
set_bit(FF_RUMBLE, hidinput->input->ffbit);
INIT_WORK(&bigben->worker, bigben_worker);
error = input_ff_create_memless(hidinput->input, bigben,
hid_bigben_play_effect);
if (error)
return error;
name_sz = strlen(dev_name(&hid->dev)) + strlen(":red:bigben#") + 1;
for (n = 0; n < NUM_LEDS; n++) {
led = devm_kzalloc(
&hid->dev,
sizeof(struct led_classdev) + name_sz,
GFP_KERNEL
);
if (!led)
return -ENOMEM;
name = (void *)(&led[1]);
snprintf(name, name_sz,
"%s:red:bigben%d",
dev_name(&hid->dev), n + 1
);
led->name = name;
led->brightness = (n == 0) ? LED_ON : LED_OFF;
led->max_brightness = 1;
led->brightness_get = bigben_get_led;
led->brightness_set = bigben_set_led;
bigben->leds[n] = led;
error = devm_led_classdev_register(&hid->dev, led);
if (error)
return error;
}
/* initial state: LED1 is on, no rumble effect */
bigben->led_state = BIT(0);
bigben->right_motor_on = 0;
bigben->left_motor_force = 0;
bigben->work_led = true;
bigben->work_ff = true;
schedule_work(&bigben->worker);
hid_info(hid, "LED and force feedback support for BigBen gamepad\n");
return 0;
}
static __u8 *bigben_report_fixup(struct hid_device *hid, __u8 *rdesc,
unsigned int *rsize)
{
if (*rsize == PID0902_RDESC_ORIG_SIZE) {
rdesc = pid0902_rdesc_fixed;
*rsize = sizeof(pid0902_rdesc_fixed);
} else
hid_warn(hid, "unexpected rdesc, please submit for review\n");
return rdesc;
}
static const struct hid_device_id bigben_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_BIGBEN, USB_DEVICE_ID_BIGBEN_PS3OFMINIPAD) },
{ }
};
MODULE_DEVICE_TABLE(hid, bigben_devices);
static struct hid_driver bigben_driver = {
.name = "bigben",
.id_table = bigben_devices,
.probe = bigben_probe,
.report_fixup = bigben_report_fixup,
.remove = bigben_remove,
};
module_hid_driver(bigben_driver);
MODULE_LICENSE("GPL");