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SPI
SPI 子设备从机驱动
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static struct class spiclass static struct cdev spicdev devt devno volatile unsigned long spigpeconNULL volatile unsigned long spigpedatNULL volatile unsigned long spigpeupNULL volatile unsigned long spigpgconNULL volatile unsigned long spigpgdatNULL volatile unsigned long spigpgupNULL volatile unsigned long s3c2440clkcon volatile unsigned long spispcon0 volatile unsigned long spispsta0 volatile unsigned long spisppin0 volatile unsigned long spisppre0 volatile unsigned long spisptdat0......
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