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gpiolib linux version 3.4.39 drivers\gpio\gpiolib.c 1.提供int gpiochip_add(struct gpio_chip *chip)接口,给soc gpio controller driver,register a gpio_chip； s 阅读全文
posted @ 2021-05-07 14:45
王阳开
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#define container_of(ptr, type, member) /* include/linux/kernel.h */ /** * container_of - cast a member of a structure out to the containing structure 阅读全文
posted @ 2021-05-07 12:02
王阳开
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s5p6818 gpio controller reference datasheet and driver code； Features Programmable Pull-Up Control Edge/Level Detect Supports programmable Pull-Up res 阅读全文
posted @ 2021-05-07 11:35
王阳开
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s5p6818 gpio controller driver implementation analysis linux version 3.4.39 lable 1: GPIO platform_device_register(); /* arch/arm/mach-s5p6818/devices 阅读全文
posted @ 2021-05-07 11:17
王阳开
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