diff options
| author | Yi Chou <yich@google.com> | 2023-04-01 01:43:53 +0800 |
|---|---|---|
| committer | Chromeos LUCI <chromeos-scoped@luci-project-accounts.iam.gserviceaccount.com> | 2023-04-25 13:23:44 +0000 |
| commit | 80e13ae8a591cd2ab68a77a5b1526d933ec02d33 (patch) | |
| tree | adc37a4fb6aee2efd988b67bf58caa9be33134da /include | |
| parent | 438865216dc3e4b7c86da0af5817040b10e78778 (diff) | |
| download | chrome-ec-80e13ae8a591cd2ab68a77a5b1526d933ec02d33.tar.gz | |
clock: Add ScopedFastCpu
Add a helper class to scope the range of boosting CPU.
BUG=b:248508087
TEST=make V=1 BOARD=bloonchipper -j
BRANCH=none
Change-Id: Ic3dc59bb71e75aec8efb0eb1f2b035ef2867bd42
Signed-off-by: Yi Chou <yich@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/4345046
Reviewed-by: Tom Hughes <tomhughes@chromium.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/scoped_fast_cpu.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/include/scoped_fast_cpu.h b/include/scoped_fast_cpu.h new file mode 100644 index 0000000000..5c291362b9 --- /dev/null +++ b/include/scoped_fast_cpu.h @@ -0,0 +1,36 @@ +/* Copyright 2023 The ChromiumOS Authors + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +/* A class to scope the range of boosting CPU. */ + +#ifndef __CROS_EC_SCOPED_FAST_CPU_H +#define __CROS_EC_SCOPED_FAST_CPU_H + +#include "clock.h" + +class ScopedFastCpu { + public: + ScopedFastCpu() + : previous_state_(current_state_) + { + if (current_state_ != 1) { + clock_enable_module(MODULE_FAST_CPU, 1); + current_state_ = 1; + } + } + ~ScopedFastCpu() + { + if (current_state_ != previous_state_) { + clock_enable_module(MODULE_FAST_CPU, previous_state_); + current_state_ = previous_state_; + } + } + + private: + int previous_state_; + static inline int current_state_; +}; + +#endif /* __CROS_EC_SCOPED_FAST_CPU_H */ |