Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / hid / hid-gaff.c

diff --git a/kernel/drivers/hid/hid-gaff.c b/kernel/drivers/hid/hid-gaff.c
new file mode 100644 (file)
index 0000000..2d8cead
--- /dev/null
+++ b/kernel/drivers/hid/hid-gaff.c
@@ -0,0 +1,179 @@
+/*
+ *  Force feedback support for GreenAsia (Product ID 0x12) based devices
+ *
+ *  The devices are distributed under various names and the same USB device ID
+ *  can be used in many game controllers.
+ *
+ *
+ *  0e8f:0012 "GreenAsia Inc.    USB Joystick     "
+ *   - tested with MANTA Warior MM816 and SpeedLink Strike2 SL-6635.
+ *
+ *  Copyright (c) 2008 Lukasz Lubojanski <lukasz@lubojanski.info>
+ */
+
+/*
+ * 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_GREENASIA_FF
+
+struct gaff_device {
+       struct hid_report *report;
+};
+
+static int hid_gaff_play(struct input_dev *dev, void *data,
+                        struct ff_effect *effect)
+{
+       struct hid_device *hid = input_get_drvdata(dev);
+       struct gaff_device *gaff = data;
+       int left, right;
+
+       left = effect->u.rumble.strong_magnitude;
+       right = effect->u.rumble.weak_magnitude;
+
+       dbg_hid("called with 0x%04x 0x%04x", left, right);
+
+       left = left * 0xfe / 0xffff;
+       right = right * 0xfe / 0xffff;
+
+       gaff->report->field[0]->value[0] = 0x51;
+       gaff->report->field[0]->value[1] = 0x0;
+       gaff->report->field[0]->value[2] = right;
+       gaff->report->field[0]->value[3] = 0;
+       gaff->report->field[0]->value[4] = left;
+       gaff->report->field[0]->value[5] = 0;
+       dbg_hid("running with 0x%02x 0x%02x", left, right);
+       hid_hw_request(hid, gaff->report, HID_REQ_SET_REPORT);
+
+       gaff->report->field[0]->value[0] = 0xfa;
+       gaff->report->field[0]->value[1] = 0xfe;
+       gaff->report->field[0]->value[2] = 0x0;
+       gaff->report->field[0]->value[4] = 0x0;
+
+       hid_hw_request(hid, gaff->report, HID_REQ_SET_REPORT);
+
+       return 0;
+}
+
+static int gaff_init(struct hid_device *hid)
+{
+       struct gaff_device *gaff;
+       struct hid_report *report;
+       struct hid_input *hidinput = list_entry(hid->inputs.next,
+                                               struct hid_input, list);
+       struct list_head *report_list =
+                       &hid->report_enum[HID_OUTPUT_REPORT].report_list;
+       struct list_head *report_ptr = 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_ptr = report_ptr->next;
+
+       report = list_entry(report_ptr, 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 < 6) {
+               hid_err(hid, "not enough values in the field\n");
+               return -ENODEV;
+       }
+
+       gaff = kzalloc(sizeof(struct gaff_device), GFP_KERNEL);
+       if (!gaff)
+               return -ENOMEM;
+
+       set_bit(FF_RUMBLE, dev->ffbit);
+
+       error = input_ff_create_memless(dev, gaff, hid_gaff_play);
+       if (error) {
+               kfree(gaff);
+               return error;
+       }
+
+       gaff->report = report;
+       gaff->report->field[0]->value[0] = 0x51;
+       gaff->report->field[0]->value[1] = 0x00;
+       gaff->report->field[0]->value[2] = 0x00;
+       gaff->report->field[0]->value[3] = 0x00;
+       hid_hw_request(hid, gaff->report, HID_REQ_SET_REPORT);
+
+       gaff->report->field[0]->value[0] = 0xfa;
+       gaff->report->field[0]->value[1] = 0xfe;
+
+       hid_hw_request(hid, gaff->report, HID_REQ_SET_REPORT);
+
+       hid_info(hid, "Force Feedback for GreenAsia 0x12 devices by Lukasz Lubojanski <lukasz@lubojanski.info>\n");
+
+       return 0;
+}
+#else
+static inline int gaff_init(struct hid_device *hdev)
+{
+       return 0;
+}
+#endif
+
+static int ga_probe(struct hid_device *hdev, const struct hid_device_id *id)
+{
+       int ret;
+
+       dev_dbg(&hdev->dev, "Greenasia 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;
+       }
+
+       gaff_init(hdev);
+
+       return 0;
+err:
+       return ret;
+}
+
+static const struct hid_device_id ga_devices[] = {
+       { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012),  },
+       { }
+};
+MODULE_DEVICE_TABLE(hid, ga_devices);
+
+static struct hid_driver ga_driver = {
+       .name = "greenasia",
+       .id_table = ga_devices,
+       .probe = ga_probe,
+};
+module_hid_driver(ga_driver);
+
+MODULE_LICENSE("GPL");