Add the rt linux 4.1.3-rt3 as base

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

diff --git a/kernel/drivers/hid/hid-zpff.c b/kernel/drivers/hid/hid-zpff.c
new file mode 100644 (file)
index 0000000..a29756c
--- /dev/null
+++ b/kernel/drivers/hid/hid-zpff.c
@@ -0,0 +1,147 @@
+/*
+ *  Force feedback support for Zeroplus based devices
+ *
+ *  Copyright (c) 2005, 2006 Anssi Hannula <anssi.hannula@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/hid.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+#ifdef CONFIG_ZEROPLUS_FF
+
+struct zpff_device {
+       struct hid_report *report;
+};
+
+static int zpff_play(struct input_dev *dev, void *data,
+                        struct ff_effect *effect)
+{
+       struct hid_device *hid = input_get_drvdata(dev);
+       struct zpff_device *zpff = data;
+       int left, right;
+
+       /*
+        * The following is specified the other way around in the Zeroplus
+        * datasheet but the order below is correct for the XFX Executioner;
+        * however it is possible that the XFX Executioner is an exception
+        */
+
+       left = effect->u.rumble.strong_magnitude;
+       right = effect->u.rumble.weak_magnitude;
+       dbg_hid("called with 0x%04x 0x%04x\n", left, right);
+
+       left = left * 0x7f / 0xffff;
+       right = right * 0x7f / 0xffff;
+
+       zpff->report->field[2]->value[0] = left;
+       zpff->report->field[3]->value[0] = right;
+       dbg_hid("running with 0x%02x 0x%02x\n", left, right);
+       hid_hw_request(hid, zpff->report, HID_REQ_SET_REPORT);
+
+       return 0;
+}
+
+static int zpff_init(struct hid_device *hid)
+{
+       struct zpff_device *zpff;
+       struct hid_report *report;
+       struct hid_input *hidinput = list_entry(hid->inputs.next,
+                                               struct hid_input, list);
+       struct input_dev *dev = hidinput->input;
+       int i, error;
+
+       for (i = 0; i < 4; i++) {
+               report = hid_validate_values(hid, HID_OUTPUT_REPORT, 0, i, 1);
+               if (!report)
+                       return -ENODEV;
+       }
+
+       zpff = kzalloc(sizeof(struct zpff_device), GFP_KERNEL);
+       if (!zpff)
+               return -ENOMEM;
+
+       set_bit(FF_RUMBLE, dev->ffbit);
+
+       error = input_ff_create_memless(dev, zpff, zpff_play);
+       if (error) {
+               kfree(zpff);
+               return error;
+       }
+
+       zpff->report = report;
+       zpff->report->field[0]->value[0] = 0x00;
+       zpff->report->field[1]->value[0] = 0x02;
+       zpff->report->field[2]->value[0] = 0x00;
+       zpff->report->field[3]->value[0] = 0x00;
+       hid_hw_request(hid, zpff->report, HID_REQ_SET_REPORT);
+
+       hid_info(hid, "force feedback for Zeroplus based devices by Anssi Hannula <anssi.hannula@gmail.com>\n");
+
+       return 0;
+}
+#else
+static inline int zpff_init(struct hid_device *hid)
+{
+       return 0;
+}
+#endif
+
+static int zp_probe(struct hid_device *hdev, const struct hid_device_id *id)
+{
+       int ret;
+
+       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;
+       }
+
+       zpff_init(hdev);
+
+       return 0;
+err:
+       return ret;
+}
+
+static const struct hid_device_id zp_devices[] = {
+       { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
+       { }
+};
+MODULE_DEVICE_TABLE(hid, zp_devices);
+
+static struct hid_driver zp_driver = {
+       .name = "zeroplus",
+       .id_table = zp_devices,
+       .probe = zp_probe,
+};
+module_hid_driver(zp_driver);
+
+MODULE_LICENSE("GPL");