On Thu, Oct 18, 2018 at 11:50:24AM +0100, Gustavo Pimentel wrote: > On 18/10/2018 09:02, Peter Ujfalusi wrote: > > On 2018-10-17 14:42, Gustavo Pimentel wrote: > > Fixed up the email addresses.. > >> I'm implementing a new DMA driver for an IP and I've used /drivers/dma/dw/* > >> driver has reference. This driver uses DMA engine framework. > >> > >> Now I would like to start testing my new driver by using DMAtest tool, I've > >> follow the instructions written on [1], but I don't get any output from it. > >> I think DMAtest didn't even started... Can you help to track down this? > > Do you have support for DMA_MEM_TO_MEM and implementation for the > > device_prep_dma_memcpy callback? > > If yes, then add debug to your device_prep_dma_memcpy first to see if it > > goes well, then to your device_issue_pending and device_tx_status callbacks. > Unfortunately I don't have it. I only have support for DMA_DEV_TO_MEM and > DMA_MEM_TO_DEV. You can't use dmatest for such engine. Hint: find an SPI or UART controller and do a loopback test with DMA enabled. -- With Best Regards, Andy Shevchenko
