On Tue, 17 Aug 2010 09:37:34 +0800 Yong Wang <yong.y.wang@xxxxxxxxxxxxxxx> wrote: > Hi all, > > We have a PCI based UART controller that is compatible with the > existing 8250 serial driver in most aspects. However, one exception > is that our UART controller can take advantage of the onboard DMA > contoller to achieve higher throughput. Could you please share your > insights about what is the proper way to add such DMA support into > existing 8250 driver? I'd say the same as I said to the other folks who asked this - create a new driver. All the DMA based 8250 devices have differing DMA engines and it'll become unmanagable in the existing driver. Once we can see which bits of the existing code are useful for the DMA 8250-style devices we can then create an 8250-lib.c which contains the bits that are useful to 8250 and to non standard 8250-like devices. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
