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https://github.com/Telecominfraproject/OpenCellular.git
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242f195771
Added ability to disable the keyboard to wake from suspend when the lid is outside a certain angle range. This has been added to glimmer by defining CONFIG_LID_ANGLE_KEY_SCAN in its board.h. Also modified the lid angle calculation to include a reliability flag which can be used to tell when the hinge aligns too closely with gravity and the lid angle value is unreliable. BUG=none BRANCH=rambi TEST=Tested on a glimmer: In S3, verified that when the lid is open past ~180 deg, the keyboard does not wake the machine. Also verified that if you align hinge with gravity, the keyboard enabled/disabled status remains the same (since we can't actually trust the lid angle value). Change-Id: I45b2c7c3c4bbcae61d3a0f8b5baa461ab8dabfb0 Original-Change-Id: If1a1592d259902d38941936961854b81b3a75b95 Signed-off-by: Alec Berg <alecaberg@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/190061 Reviewed-on: https://chromium-review.googlesource.com/191612 Reviewed-by: Randall Spangler <rspangler@chromium.org>
96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Header for motion_sense.c */
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#ifndef __CROS_EC_MOTION_SENSE_H
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#define __CROS_EC_MOTION_SENSE_H
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#include "gpio.h"
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#include "math_util.h"
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/* Anything outside of lid angle range [-180, 180] should work. */
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#define LID_ANGLE_UNRELIABLE 500.0F
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/**
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* This structure defines all of the data needed to specify the orientation
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* of the base and lid accelerometers in order to calculate the lid angle.
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*/
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struct accel_orientation {
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/*
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* Rotation matrix to rotate the lid sensor into the same reference
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* frame as the base sensor.
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*/
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matrix_3x3_t rot_align;
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/* Rotation matrix to rotate positive 90 degrees around the hinge. */
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matrix_3x3_t rot_hinge_90;
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/*
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* Rotation matrix to rotate 180 degrees around the hinge. The value
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* here should be rot_hinge_90 ^ 2.
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*/
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matrix_3x3_t rot_hinge_180;
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/*
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* Rotation matrix to rotate base sensor into the standard reference
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* frame.
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*/
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matrix_3x3_t rot_standard_ref;
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/* Vector pointing along hinge axis. */
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vector_3_t hinge_axis;
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};
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/* Link global structure for orientation. This must be defined in board.c. */
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extern
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#ifndef CONFIG_ACCEL_CALIBRATE
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const
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#endif
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struct accel_orientation acc_orient;
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/**
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* Get last calculated lid angle.
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*
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* @return lid angle in degrees in range [-180, 180].
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*/
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int motion_get_lid_angle(void);
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#ifdef CONFIG_ACCEL_CALIBRATE
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/**
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* Get the last measured lid acceleration vector.
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*
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* @param v Pointer to location to store vector.
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* @param adjusted If false use the raw vector, if true use the adjusted vector.
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*/
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void motion_get_accel_lid(vector_3_t *v, int adjusted);
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/**
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* Get the last measured base acceleration vector.
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*
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* @param v Pointer to location to store vector.
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*/
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void motion_get_accel_base(vector_3_t *v);
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#endif
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/**
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* Interrupt function for lid accelerometer.
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*
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* @param signal GPIO signal that caused interrupt
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*/
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void accel_int_lid(enum gpio_signal signal);
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/**
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* Interrupt function for base accelerometer.
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*
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* @param signal GPIO signal that caused interrupt
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*/
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void accel_int_base(enum gpio_signal signal);
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#endif /* __CROS_EC_MOTION_SENSE_H */
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