ºÝºÝߣ

linux device driver linux kernel module basic linux driver linux kernel module related commands modprobe jiffies kernel timing architecture device drivers kernel development select & poll wait queues atomic operations spinlocks semaphore mutex synchronization mechanism character driver file operations netlink udev registering the character driver ioctl linux device drivers linux dma engine api linux dma engine direct memory access dma linux spi client driver linux spi drivers linuxdevicedriver linux platform driver i2c protocol linux i2c framework linux driver development linux i2c driver threaded irq handler work queues tasklets bottom halves registering the interrupt handler irq numbers interrupt management kernel timers delays character drivers