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Date: Mon, 11 Jun 2012 17:22:00 +0300 From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com> To: satendra.pratap@...dspeed.com Cc: hskinnemoen@...il.com, viresh.kumar@...com, linux-kernel@...r.kernel.org Subject: Re: dmatest to use synopsys dma driver (dw_dmac.c) On Mon, 2012-06-11 at 17:06 +0530, satendra.pratap@...dspeed.com wrote: > >> 1. dmatest with ported dw_dmac.c (from linux-3.4 to linux-3.2.2): > > >>dmatest started automatically and tries test with all registered 8 > >>channels of our dma engine but we get crashes with every channel as > shown > >>below: > > These crashes are solved but I get same " test timed out" for this ported > driver too > as I was getting with original one. After debugging, it seems that after > dma transfer is complete no interrupt is > generated.......I have verified irq number etc , handler registered > properly but I don get any interrupts.. > I am looking into the code to see whether there is any polling mechanism > is used in the driver ? I have few patches to fix this driver for our hardware. The dw_dmac has few issues, one of them is impossibility to configure some important parts of the IP-block like block_ts or tr_width. So, I could send patchset which probably helps you a bit. -- Andy Shevchenko <andriy.shevchenko@...ux.intel.com> Intel Finland Oy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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