1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/usb/input/pid.h b/drivers/usb/input/pid.h
new file mode 100644
index 000000000000..a2cb9627ed0e
--- /dev/null
+++ b/drivers/usb/input/pid.h
@@ -0,0 +1,62 @@
+/*
+ *  PID Force feedback support for hid devices.
+ *
+ *  Copyright (c) 2002 Rodrigo Damazio.
+ */
+
+/*
+ * 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
+ *
+ * Should you need to contact me, the author, you can do so by
+ * e-mail - mail your message to <rdamazio@lsi.usp.br>
+ */
+
+#define FF_EFFECTS_MAX 64
+
+#define FF_PID_FLAGS_USED	1	/* If the effect exists */
+#define FF_PID_FLAGS_UPDATING	2	/* If the effect is being updated */
+#define FF_PID_FLAGS_PLAYING	3	/* If the effect is currently being played */
+
+#define FF_PID_FALSE	0
+#define FF_PID_TRUE	1
+
+struct hid_pid_effect {
+	unsigned long flags;
+	pid_t owner;
+	unsigned int device_id;	/* The device-assigned ID */
+	struct ff_effect effect;
+};
+
+struct hid_ff_pid {
+	struct hid_device *hid;
+	unsigned long gain;
+
+	struct urb *urbffout;
+	struct usb_ctrlrequest ffcr;
+	spinlock_t lock;
+
+	unsigned char ctrl_buffer[8];
+
+	struct hid_pid_effect effects[FF_EFFECTS_MAX];
+};
+
+/*
+ * Constants from the PID usage table (still far from complete)
+ */
+
+#define FF_PID_USAGE_BLOCK_LOAD 	0x89UL
+#define FF_PID_USAGE_BLOCK_FREE		0x90UL
+#define FF_PID_USAGE_NEW_EFFECT 	0xABUL
+#define FF_PID_USAGE_POOL_REPORT	0x7FUL