一、查看已经配置好的内核
注意CONFIG_LEDS_CTL=y ,
下一步在CONFIG_LEDS_CTL之前添加一个模块
vim .config
# CONFIG_HVC_DCC is not set
# CONFIG_IPMI_HANDLER is not set
CONFIG_HW_RANDOM=y
# CONFIG_HW_RANDOM_TIMERIOMEM is not set
# CONFIG_R3964 is not set
# CONFIG_RAW_DRIVER is not set
# CONFIG_TCG_TPM is not set
# CONFIG_DCC_TTY is not set
# CONFIG_RAMOOPS is not set
CONFIG_S3C_MEM=y
CONFIG_EXYNOS_MEM=y
CONFIG_GPS_PM=y
CONFIG_MAX485_CTL=y
CONFIG_LEDS_CTL=y
CONFIG_BUZZER_CTL=y
CONFIG_ADC_CTL=y
CONFIG_RELAY_CTL=y
CONFIG_I2C=y
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_COMPAT=y
CONFIG_I2C_CHARDEV=y
# CONFIG_I2C_MUX is not set
# CONFIG_I2C_HELPER_AUTO is not set
# CONFIG_I2C_SMBUS is not set
#
# I2C Algorithms
二、查看已经配置好的内核/drivers/char 的Kconfig
vim Kconfig
找到LED
config LEDS_CTL
bool "Enable LEDS config"
default y
help
Enable LEDS config
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