File-copy from v4.4.100
This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Please refer to that tree for all history prior to this point.
Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/drivers/hid/hid-betopff.c b/drivers/hid/hid-betopff.c
new file mode 100644
index 0000000..69cfc8d
--- /dev/null
+++ b/drivers/hid/hid-betopff.c
@@ -0,0 +1,160 @@
+/*
+ * Force feedback support for Betop based devices
+ *
+ * The devices are distributed under various names and the same USB device ID
+ * can be used in both adapters and actual game controllers.
+ *
+ * 0x11c2:0x2208 "BTP2185 BFM mode Joystick"
+ * - tested with BTP2185 BFM Mode.
+ *
+ * 0x11C0:0x5506 "BTP2185 PC mode Joystick"
+ * - tested with BTP2185 PC Mode.
+ *
+ * 0x8380:0x1850 "BTP2185 V2 PC mode USB Gamepad"
+ * - tested with BTP2185 PC Mode with another version.
+ *
+ * 0x20bc:0x5500 "BTP2185 V2 BFM mode Joystick"
+ * - tested with BTP2171s.
+ * Copyright (c) 2014 Huang Bo <huangbobupt@163.com>
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+
+#include <linux/input.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/hid.h>
+
+#include "hid-ids.h"
+
+struct betopff_device {
+ struct hid_report *report;
+};
+
+static int hid_betopff_play(struct input_dev *dev, void *data,
+ struct ff_effect *effect)
+{
+ struct hid_device *hid = input_get_drvdata(dev);
+ struct betopff_device *betopff = data;
+ __u16 left, right;
+
+ left = effect->u.rumble.strong_magnitude;
+ right = effect->u.rumble.weak_magnitude;
+
+ betopff->report->field[2]->value[0] = left / 256;
+ betopff->report->field[3]->value[0] = right / 256;
+
+ hid_hw_request(hid, betopff->report, HID_REQ_SET_REPORT);
+
+ return 0;
+}
+
+static int betopff_init(struct hid_device *hid)
+{
+ struct betopff_device *betopff;
+ struct hid_report *report;
+ struct hid_input *hidinput =
+ list_first_entry(&hid->inputs, struct hid_input, list);
+ struct list_head *report_list =
+ &hid->report_enum[HID_OUTPUT_REPORT].report_list;
+ struct input_dev *dev = hidinput->input;
+ int field_count = 0;
+ int error;
+ int i, j;
+
+ if (list_empty(report_list)) {
+ hid_err(hid, "no output reports found\n");
+ return -ENODEV;
+ }
+
+ report = list_first_entry(report_list, struct hid_report, list);
+ /*
+ * Actually there are 4 fields for 4 Bytes as below:
+ * -----------------------------------------
+ * Byte0 Byte1 Byte2 Byte3
+ * 0x00 0x00 left_motor right_motor
+ * -----------------------------------------
+ * Do init them with default value.
+ */
+ for (i = 0; i < report->maxfield; i++) {
+ for (j = 0; j < report->field[i]->report_count; j++) {
+ report->field[i]->value[j] = 0x00;
+ field_count++;
+ }
+ }
+
+ if (field_count < 4) {
+ hid_err(hid, "not enough fields in the report: %d\n",
+ field_count);
+ return -ENODEV;
+ }
+
+ betopff = kzalloc(sizeof(*betopff), GFP_KERNEL);
+ if (!betopff)
+ return -ENOMEM;
+
+ set_bit(FF_RUMBLE, dev->ffbit);
+
+ error = input_ff_create_memless(dev, betopff, hid_betopff_play);
+ if (error) {
+ kfree(betopff);
+ return error;
+ }
+
+ betopff->report = report;
+ hid_hw_request(hid, betopff->report, HID_REQ_SET_REPORT);
+
+ hid_info(hid, "Force feedback for betop devices by huangbo <huangbobupt@163.com>\n");
+
+ return 0;
+}
+
+static int betop_probe(struct hid_device *hdev, const struct hid_device_id *id)
+{
+ int ret;
+
+ if (id->driver_data)
+ hdev->quirks |= HID_QUIRK_MULTI_INPUT;
+
+ ret = hid_parse(hdev);
+ if (ret) {
+ hid_err(hdev, "parse failed\n");
+ goto err;
+ }
+
+ ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
+ if (ret) {
+ hid_err(hdev, "hw start failed\n");
+ goto err;
+ }
+
+ betopff_init(hdev);
+
+ return 0;
+err:
+ return ret;
+}
+
+static const struct hid_device_id betop_devices[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185BFM, 0x2208) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185PC, 0x5506) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185V2PC, 0x1850) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185V2BFM, 0x5500) },
+ { }
+};
+MODULE_DEVICE_TABLE(hid, betop_devices);
+
+static struct hid_driver betop_driver = {
+ .name = "betop",
+ .id_table = betop_devices,
+ .probe = betop_probe,
+};
+module_hid_driver(betop_driver);
+
+MODULE_LICENSE("GPL");