mirror of
https://github.com/Telecominfraproject/OpenCellular.git
synced 2025-12-27 18:25:05 +00:00
43806f07e3
This adds a sensor-specific attentuation factor, which will be applied to the ALS raw sensor readings on the EC. This is to account for the attenutation due to glass, tinting, etc. BUG=chrome-os-partner:34590 BRANCH=ToT,Samus TEST=manual In a root shell, run this: cd /sys/bus/acpi/drivers/acpi_als/ACPI0008:00/iio:device1 while true; do cat in_illuminance_raw; sleep 1 ;done Shine a flashlight on the ALS. Note that the readings are 5X higher than they were before this CL. Change-Id: I2a53872ecb5fab62e5f443d43588a26d3d7e697f Signed-off-by: Bill Richardson <wfrichar@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/241191 Reviewed-by: Bryan Freed <bfreed@chromium.org>
34 lines
651 B
C
34 lines
651 B
C
/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
#ifndef __CROS_EC_ALS_H
|
|
#define __CROS_EC_ALS_H
|
|
|
|
#include "common.h"
|
|
|
|
/* Defined in board.h */
|
|
enum als_id;
|
|
|
|
/* Initialized in board.c */
|
|
struct als_t {
|
|
const char const *name;
|
|
int (*read)(int *lux, int af);
|
|
int attenuation_factor;
|
|
};
|
|
|
|
extern struct als_t als[];
|
|
|
|
/**
|
|
* Read an ALS
|
|
*
|
|
* @param id Which one?
|
|
* @param lux Put value here
|
|
*
|
|
* @return EC_SUCCESS, or non-zero if error.
|
|
*/
|
|
int als_read(enum als_id id, int *lux);
|
|
|
|
#endif /* __CROS_EC_ALS_H */
|