Start of a driver for the "Active Protection System" accelerometer

found in recentish ThinkPads.

Sensors are reported via hw.sensors in sysctl but sensor numbers
and presence is likely to change.  Units and use of all of the
sensors is not yet known as IBM has not released any documentation.

Driver is based on information reverse engineered from the windows
driver by Anurag Sharma and Mark Smith.

"commit the code" deraadt@

1 files changed, 51 insertions, 0 deletions

diff --git a/sys/dev/isa/apsreg.h b/sys/dev/isa/apsreg.h
new file mode 100644
index 00000000000..d3e680e0881
--- /dev/null
+++ b/sys/dev/isa/apsreg.h
@@ -0,0 +1,51 @@
+/*	$OpenBSD: apsreg.h,v 1.1 2005/08/05 03:52:32 jsg Exp $	*/
+/*
+ * Copyright (c) 2005 Jonathan Gray <jsg@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#define APS_ACCEL_STATE		0x04
+#define APS_INIT		0x10
+#define APS_STATE		0x11
+#define	APS_XACCEL		0x12
+#define APS_YACCEL		0x14
+#define APS_TEMP		0x16
+#define	APS_XVAR		0x17
+#define APS_YVAR		0x19
+#define APS_TEMP2		0x1b
+#define APS_UNKNOWN		0x1c
+#define APS_INPUT		0x1d
+#define APS_CMD			0x1f
+
+#define	APS_STATE_NEWDATA	0x50
+
+#define APS_CMD_START		0x01
+
+#define APS_INPUT_KB		(1 << 5)
+#define APS_INPUT_MS		(1 << 6)
+#define APS_INPUT_LIDOPEN	(1 << 7)
+
+#define APS_ADDR_SIZE		0x1f
+
+struct sensor_rec {
+	u_int8_t	state;
+	u_int16_t	x_accel;
+	u_int16_t	y_accel;
+	u_int8_t	temp1;
+	u_int16_t	x_var;
+	u_int16_t	y_var;
+	u_int8_t	temp2;
+	u_int8_t	unk;
+	u_int8_t	input;
+};