--- /dev/null
+/*
+ * Force feedback support for DragonRise Inc. game controllers
+ *
+ * From what I have gathered, these devices are mass produced in China and are
+ * distributed under several vendors. They often share the same design as
+ * the original PlayStation DualShock controller.
+ *
+ * 0079:0006 "DragonRise Inc. Generic USB Joystick "
+ * - tested with a Tesun USB-703 game controller.
+ *
+ * Copyright (c) 2009 Richard Walmsley <richwalm@gmail.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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/input.h>
+#include <linux/slab.h>
+#include <linux/hid.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+#ifdef CONFIG_DRAGONRISE_FF
+
+struct drff_device {
+ struct hid_report *report;
+};
+
+static int drff_play(struct input_dev *dev, void *data,
+ struct ff_effect *effect)
+{
+ struct hid_device *hid = input_get_drvdata(dev);
+ struct drff_device *drff = data;
+ int strong, weak;
+
+ strong = effect->u.rumble.strong_magnitude;
+ weak = effect->u.rumble.weak_magnitude;
+
+ dbg_hid("called with 0x%04x 0x%04x", strong, weak);
+
+ if (strong || weak) {
+ strong = strong * 0xff / 0xffff;
+ weak = weak * 0xff / 0xffff;
+
+ /* While reverse engineering this device, I found that when
+ this value is set, it causes the strong rumble to function
+ at a near maximum speed, so we'll bypass it. */
+ if (weak == 0x0a)
+ weak = 0x0b;
+
+ drff->report->field[0]->value[0] = 0x51;
+ drff->report->field[0]->value[1] = 0x00;
+ drff->report->field[0]->value[2] = weak;
+ drff->report->field[0]->value[4] = strong;
+ hid_hw_request(hid, drff->report, HID_REQ_SET_REPORT);
+
+ drff->report->field[0]->value[0] = 0xfa;
+ drff->report->field[0]->value[1] = 0xfe;
+ } else {
+ drff->report->field[0]->value[0] = 0xf3;
+ drff->report->field[0]->value[1] = 0x00;
+ }
+
+ drff->report->field[0]->value[2] = 0x00;
+ drff->report->field[0]->value[4] = 0x00;
+ dbg_hid("running with 0x%02x 0x%02x", strong, weak);
+ hid_hw_request(hid, drff->report, HID_REQ_SET_REPORT);
+
+ return 0;
+}
+
+static int drff_init(struct hid_device *hid)
+{
+ struct drff_device *drff;
+ 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 error;
+
+ 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);
+ if (report->maxfield < 1) {
+ hid_err(hid, "no fields in the report\n");
+ return -ENODEV;
+ }
+
+ if (report->field[0]->report_count < 7) {
+ hid_err(hid, "not enough values in the field\n");
+ return -ENODEV;
+ }
+
+ drff = kzalloc(sizeof(struct drff_device), GFP_KERNEL);
+ if (!drff)
+ return -ENOMEM;
+
+ set_bit(FF_RUMBLE, dev->ffbit);
+
+ error = input_ff_create_memless(dev, drff, drff_play);
+ if (error) {
+ kfree(drff);
+ return error;
+ }
+
+ drff->report = report;
+ drff->report->field[0]->value[0] = 0xf3;
+ drff->report->field[0]->value[1] = 0x00;
+ drff->report->field[0]->value[2] = 0x00;
+ drff->report->field[0]->value[3] = 0x00;
+ drff->report->field[0]->value[4] = 0x00;
+ drff->report->field[0]->value[5] = 0x00;
+ drff->report->field[0]->value[6] = 0x00;
+ hid_hw_request(hid, drff->report, HID_REQ_SET_REPORT);
+
+ hid_info(hid, "Force Feedback for DragonRise Inc. "
+ "game controllers by Richard Walmsley <richwalm@gmail.com>\n");
+
+ return 0;
+}
+#else
+static inline int drff_init(struct hid_device *hid)
+{
+ return 0;
+}
+#endif
+
+/*
+ * The original descriptor of joystick with PID 0x0011, represented by DVTech PC
+ * JS19. It seems both copied from another device and a result of confusion
+ * either about the specification or about the program used to create the
+ * descriptor. In any case, it's a wonder it works on Windows.
+ *
+ * Usage Page (Desktop), ; Generic desktop controls (01h)
+ * Usage (Joystik), ; Joystik (04h, application collection)
+ * Collection (Application),
+ * Collection (Logical),
+ * Report Size (8),
+ * Report Count (5),
+ * Logical Minimum (0),
+ * Logical Maximum (255),
+ * Physical Minimum (0),
+ * Physical Maximum (255),
+ * Usage (X), ; X (30h, dynamic value)
+ * Usage (X), ; X (30h, dynamic value)
+ * Usage (X), ; X (30h, dynamic value)
+ * Usage (X), ; X (30h, dynamic value)
+ * Usage (Y), ; Y (31h, dynamic value)
+ * Input (Variable),
+ * Report Size (4),
+ * Report Count (1),
+ * Logical Maximum (7),
+ * Physical Maximum (315),
+ * Unit (Degrees),
+ * Usage (00h),
+ * Input (Variable, Null State),
+ * Unit,
+ * Report Size (1),
+ * Report Count (10),
+ * Logical Maximum (1),
+ * Physical Maximum (1),
+ * Usage Page (Button), ; Button (09h)
+ * Usage Minimum (01h),
+ * Usage Maximum (0Ah),
+ * Input (Variable),
+ * Usage Page (FF00h), ; FF00h, vendor-defined
+ * Report Size (1),
+ * Report Count (10),
+ * Logical Maximum (1),
+ * Physical Maximum (1),
+ * Usage (01h),
+ * Input (Variable),
+ * End Collection,
+ * Collection (Logical),
+ * Report Size (8),
+ * Report Count (4),
+ * Physical Maximum (255),
+ * Logical Maximum (255),
+ * Usage (02h),
+ * Output (Variable),
+ * End Collection,
+ * End Collection
+ */
+
+/* Size of the original descriptor of the PID 0x0011 joystick */
+#define PID0011_RDESC_ORIG_SIZE 101
+
+/* Fixed report descriptor for PID 0x011 joystick */
+static __u8 pid0011_rdesc_fixed[] = {
+ 0x05, 0x01, /* Usage Page (Desktop), */
+ 0x09, 0x04, /* Usage (Joystik), */
+ 0xA1, 0x01, /* Collection (Application), */
+ 0xA1, 0x02, /* Collection (Logical), */
+ 0x14, /* Logical Minimum (0), */
+ 0x75, 0x08, /* Report Size (8), */
+ 0x95, 0x03, /* Report Count (3), */
+ 0x81, 0x01, /* Input (Constant), */
+ 0x26, 0xFF, 0x00, /* Logical Maximum (255), */
+ 0x95, 0x02, /* Report Count (2), */
+ 0x09, 0x30, /* Usage (X), */
+ 0x09, 0x31, /* Usage (Y), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x75, 0x01, /* Report Size (1), */
+ 0x95, 0x04, /* Report Count (4), */
+ 0x81, 0x01, /* Input (Constant), */
+ 0x25, 0x01, /* Logical Maximum (1), */
+ 0x95, 0x0A, /* Report Count (10), */
+ 0x05, 0x09, /* Usage Page (Button), */
+ 0x19, 0x01, /* Usage Minimum (01h), */
+ 0x29, 0x0A, /* Usage Maximum (0Ah), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x95, 0x0A, /* Report Count (10), */
+ 0x81, 0x01, /* Input (Constant), */
+ 0xC0, /* End Collection, */
+ 0xC0 /* End Collection */
+};
+
+static __u8 *dr_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+ unsigned int *rsize)
+{
+ switch (hdev->product) {
+ case 0x0011:
+ if (*rsize == PID0011_RDESC_ORIG_SIZE) {
+ rdesc = pid0011_rdesc_fixed;
+ *rsize = sizeof(pid0011_rdesc_fixed);
+ }
+ break;
+ }
+ return rdesc;
+}
+
+static int dr_probe(struct hid_device *hdev, const struct hid_device_id *id)
+{
+ int ret;
+
+ dev_dbg(&hdev->dev, "DragonRise Inc. HID hardware probe...");
+
+ 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;
+ }
+
+ switch (hdev->product) {
+ case 0x0006:
+ ret = drff_init(hdev);
+ if (ret) {
+ dev_err(&hdev->dev, "force feedback init failed\n");
+ hid_hw_stop(hdev);
+ goto err;
+ }
+ break;
+ }
+
+ return 0;
+err:
+ return ret;
+}
+
+static const struct hid_device_id dr_devices[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006), },
+ { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011), },
+ { }
+};
+MODULE_DEVICE_TABLE(hid, dr_devices);
+
+static struct hid_driver dr_driver = {
+ .name = "dragonrise",
+ .id_table = dr_devices,
+ .report_fixup = dr_report_fixup,
+ .probe = dr_probe,
+};
+module_hid_driver(dr_driver);
+
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff