64e49aba7c
方案描述：
和L0保持一致，上层通过proc文件系统操作：
power_mode 支持的低功耗模式，通过对该文件进行write操作可以设置低功耗模式
power_count powermanager模块通过对该文件操作，和内核进行交互，简要流程如下：
while (1) {
open // 打开该文件
read // 使powermanager低功耗任务常阻塞，当系统无任何模块持锁时，会唤醒该任务
write // 进行低功耗流程
close // 关闭该文件
}
power_lock write该文件，持锁
power_unlock writw该文件，释放锁
Close #I4JSO
Change-Id: I73fcdeeb5e2039484b3351a81b46a0892b349fe9
Signed-off-by: zhushengle <zhushengle@huawei.com>
41 lines
1.8 KiB
Plaintext
41 lines
1.8 KiB
Plaintext
# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
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# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without modification,
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# are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright notice, this list of
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# conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright notice, this list
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# of conditions and the following disclaimer in the documentation and/or other materials
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# provided with the distribution.
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#
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# 3. Neither the name of the copyright holder nor the names of its contributors may be used
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# to endorse or promote products derived from this software without specific prior written
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# permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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import("//kernel/liteos_a/liteos.gni")
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module_switch = defined(LOSCFG_KERNEL_PM)
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module_name = get_path_info(rebase_path("."), "name")
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kernel_module(module_name) {
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sources = [ "los_pm.c" ]
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}
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config("public") {
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include_dirs = [ "." ]
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}
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