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447c4e8338
Some device drivers (and out-of-tree modules) might want to define device-specific device governors. Rather than restricting all of them to be a part of drivers/devfreq/ (which is not possible for out-of-tree drivers anyway) move governor.h to include/linux/devfreq-governor.h and update all drivers to use it. The devfreq_cpu_data is only used internally, by the passive governor, so it is moved to the driver source rather than being a part of the public interface. Reported-by: Robie Basak <robibasa@qti.qualcomm.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Reviewed-by: Bjorn Andersson <andersson@kernel.org> Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Link: https://patchwork.kernel.org/project/linux-pm/patch/20251030-governor-public-v2-1-432a11a9975a@oss.qualcomm.com/
63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* linux/drivers/devfreq/governor_performance.c
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*
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* Copyright (C) 2011 Samsung Electronics
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* MyungJoo Ham <myungjoo.ham@samsung.com>
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*/
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#include <linux/devfreq.h>
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#include <linux/devfreq-governor.h>
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#include <linux/module.h>
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static int devfreq_performance_func(struct devfreq *df,
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unsigned long *freq)
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{
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/*
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* target callback should be able to get floor value as
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* said in devfreq.h
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*/
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*freq = DEVFREQ_MAX_FREQ;
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return 0;
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}
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static int devfreq_performance_handler(struct devfreq *devfreq,
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unsigned int event, void *data)
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{
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int ret = 0;
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if (event == DEVFREQ_GOV_START) {
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mutex_lock(&devfreq->lock);
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ret = update_devfreq(devfreq);
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mutex_unlock(&devfreq->lock);
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}
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return ret;
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}
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static struct devfreq_governor devfreq_performance = {
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.name = DEVFREQ_GOV_PERFORMANCE,
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.get_target_freq = devfreq_performance_func,
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.event_handler = devfreq_performance_handler,
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};
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static int __init devfreq_performance_init(void)
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{
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return devfreq_add_governor(&devfreq_performance);
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}
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subsys_initcall(devfreq_performance_init);
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static void __exit devfreq_performance_exit(void)
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{
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int ret;
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ret = devfreq_remove_governor(&devfreq_performance);
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if (ret)
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pr_err("%s: failed remove governor %d\n", __func__, ret);
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return;
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}
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module_exit(devfreq_performance_exit);
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MODULE_DESCRIPTION("DEVFREQ Performance governor");
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MODULE_LICENSE("GPL");
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