Files
OpenCellular/include/throttle_ap.h
Randall Spangler 251a80add3 throttle_ap.c should only be compiled if there's a chipset/power task
It doesn't need to be compiled if there would be nothing for it to talk to.

BUG=chrome-os-partner:20739
BRANCH=none
TEST=build all platforms, pass unit tests
     comment out chipset task in Rambi ec.tasklist; code still compiles

Change-Id: I004364b8c1fdf02c420162b5ad2843068a26b452
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/174302
2013-10-23 23:53:23 +00:00

59 lines
1.4 KiB
C

/* Copyright (c) 2012 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.
*/
/* Common interface to throttle the AP */
#ifndef __CROS_EC_THROTTLE_AP_H
#define __CROS_EC_THROTTLE_AP_H
/**
* Level of throttling desired.
*/
enum throttle_level {
THROTTLE_OFF = 0,
THROTTLE_ON,
};
/**
* Types of throttling desired. These are independent.
*/
enum throttle_type {
THROTTLE_SOFT = 0, /* for example, host events */
THROTTLE_HARD, /* for example, PROCHOT */
NUM_THROTTLE_TYPES
};
/**
* Possible sources for CPU throttling requests.
*/
enum throttle_sources {
THROTTLE_SRC_THERMAL = 0,
THROTTLE_SRC_POWER,
};
/**
* Enable/disable CPU throttling.
*
* This is a virtual "OR" operation. Any caller can enable CPU throttling of
* any type, but all callers must agree in order to disable that type.
*
* @param level Level of throttling desired
* @param type Type of throttling desired
* @param source Which task is requesting throttling
*/
#ifdef HAS_TASK_CHIPSET
void throttle_ap(enum throttle_level level,
enum throttle_type type,
enum throttle_sources source);
#else
static inline void throttle_ap(enum throttle_level level,
enum throttle_type type,
enum throttle_sources source)
{}
#endif
#endif /* __CROS_EC_THROTTLE_AP_H */