文件操作 - pwm_backlight.h
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文件: /usr/src/kernels/4.18.0-553.144.1.el8_10.x86_64/include/linux/pwm_backlight.h
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/* SPDX-License-Identifier: GPL-2.0 */ /* * Generic PWM backlight driver data - see drivers/video/backlight/pwm_bl.c */ #ifndef __LINUX_PWM_BACKLIGHT_H #define __LINUX_PWM_BACKLIGHT_H #include <linux/backlight.h> struct platform_pwm_backlight_data { int pwm_id; unsigned int max_brightness; unsigned int dft_brightness; unsigned int lth_brightness; unsigned int pwm_period_ns; unsigned int *levels; unsigned int post_pwm_on_delay; unsigned int pwm_off_delay; /* TODO remove once all users are switched to gpiod_* API */ int enable_gpio; int (*init)(struct device *dev); int (*notify)(struct device *dev, int brightness); void (*notify_after)(struct device *dev, int brightness); void (*exit)(struct device *dev); int (*check_fb)(struct device *dev, struct fb_info *info); }; #endif
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