taglinefilesource code
WT_CTL_DMA157include/linux/tpqic02.h#  define WT_CTL_DMA    0x10        /* enable dma chan3 */
WT_CTL_DMA159include/linux/tpqic02.h#  define WT_CTL_DMA    0x08           /* enable dma chan1 or chan2 */