e29493c71d
Use #if IS_ENABLED() instead of #ifdef for configurations as vendor module guidelines. Use #if IS_ENABLED(CONFIG_XXX) instead of #ifdef CONFIG_XXX to ensure that the code inside the #if block continues to compile if the config changes to a tristate config in the future. The differences are as follows: 1.#if IS_ENABLED(CONFIG_XXX) evaluates to true when CONFIG_XXX is set to module (=m) or built-in (=y). 2.#ifdef CONFIG_XXX evaluates to true when CONFIG_XXX is set to built-in(=y) , but doesn't when CONFIG_XXX is set to module(=m). Use this only when you're certain you want to do the same thing when the config is set to module or is disabled. Change-Id: Ia806b9b01ad8414d0e4de027a382cb68e7fb4a6a Signed-off-by: GG Hou <quic_renjhou@quicinc.com>
40 řádky
1.0 KiB
C
40 řádky
1.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
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* Copyright (c) 2020-2021 The Linux Foundation. All rights reserved.
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*/
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#ifndef __SDE_THERMAL_CORE_H__
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#define __SDE_THERMAL_CORE_H__
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#include <linux/device.h>
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#include <linux/backlight.h>
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#include <linux/thermal.h>
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#include <linux/notifier.h>
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struct sde_cdev {
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struct blocking_notifier_head notifier_head;
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struct thermal_cooling_device *cdev;
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struct backlight_device *bd;
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unsigned long thermal_state;
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unsigned int cdev_sf;
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};
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#if IS_ENABLED(CONFIG_THERMAL_OF)
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struct sde_cdev *backlight_cdev_register(struct device *dev,
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struct backlight_device *bd,
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struct notifier_block *n);
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void backlight_cdev_unregister(struct sde_cdev *cdev);
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#else
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static inline struct sde_cdev *
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backlight_cdev_register(struct device *dev,
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struct backlight_device *bd, struct notifier_block *n)
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{
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return NULL;
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}
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static inline void backlight_cdev_unregister(struct sde_cdev *cdev)
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{ }
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#endif /* CONFIG_THERMAL_OF */
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#endif
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