--- /dev/null
+// 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 <kontakt@hanno.de>
+ */
+
+#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");
projects / kernel.git / commitdiff