Re: [PATCH] dma: mmp_pdma: support for getting residual bytes

2013-06-18 Thread Xiang Wang
2013/6/17 Vinod Koul : > On Fri, May 31, 2013 at 04:21:25PM +0800, Xiang Wang wrote: >> From: Xiang Wang >> >> In some of our drivers (e.g. UART) we may stop a running DMA >> before it finishes. So we need to know how many bytes have >> been transferred. >> >> Signed-off-by: Xiang Wang >> --- >>

Re: [PATCH] dma: mmp_pdma: support for getting residual bytes

2013-06-17 Thread Vinod Koul
On Fri, May 31, 2013 at 04:21:25PM +0800, Xiang Wang wrote: > From: Xiang Wang > > In some of our drivers (e.g. UART) we may stop a running DMA > before it finishes. So we need to know how many bytes have > been transferred. > > Signed-off-by: Xiang Wang > --- > drivers/dma/mmp_pdma.c | 77

Re: [PATCH] dma: mmp_pdma: support for getting residual bytes

2013-06-09 Thread Andy Shevchenko
On Fri, Jun 7, 2013 at 6:02 AM, Xiang Wang wrote: > 2013/6/6 Andy Shevchenko : >> On Thu, Jun 6, 2013 at 6:09 AM, Xiang Wang wrote: [] >>> 2. DMA controller handles trailing bytes for us. >>> This is the case I mentioned in my previous email. "When a timed-out >>> event occurs in peripheral dev

Re: [PATCH] dma: mmp_pdma: support for getting residual bytes

2013-06-06 Thread Xiang Wang
2013/6/6 Andy Shevchenko : > On Thu, Jun 6, 2013 at 6:09 AM, Xiang Wang wrote: >> 2013/6/3 Andy Shevchenko : >>> On Mon, Jun 3, 2013 at 6:22 AM, Xiang Wang wrote: 2013/5/31 Andy Shevchenko : > On Fri, May 31, 2013 at 11:21 AM, Xiang Wang wrote: >> In some of our drivers (e.g. UART)

Re: [PATCH] dma: mmp_pdma: support for getting residual bytes

2013-06-05 Thread Andy Shevchenko
On Thu, Jun 6, 2013 at 6:09 AM, Xiang Wang wrote: > 2013/6/3 Andy Shevchenko : >> On Mon, Jun 3, 2013 at 6:22 AM, Xiang Wang wrote: >>> 2013/5/31 Andy Shevchenko : On Fri, May 31, 2013 at 11:21 AM, Xiang Wang wrote: > In some of our drivers (e.g. UART) we may stop a running DMA > be

Re: [PATCH] dma: mmp_pdma: support for getting residual bytes

2013-06-05 Thread Xiang Wang
2013/6/3 Andy Shevchenko : > On Mon, Jun 3, 2013 at 6:22 AM, Xiang Wang wrote: >> 2013/5/31 Andy Shevchenko : >>> On Fri, May 31, 2013 at 11:21 AM, Xiang Wang wrote: In some of our drivers (e.g. UART) we may stop a running DMA before it finishes. So we need to know how many bytes have >

Re: [PATCH] dma: mmp_pdma: support for getting residual bytes

2013-06-03 Thread Andy Shevchenko
On Mon, Jun 3, 2013 at 6:22 AM, Xiang Wang wrote: > 2013/5/31 Andy Shevchenko : >> On Fri, May 31, 2013 at 11:21 AM, Xiang Wang wrote: >>> In some of our drivers (e.g. UART) we may stop a running DMA >>> before it finishes. So we need to know how many bytes have >>> been transferred. >> >> Couple

Re: [PATCH] dma: mmp_pdma: support for getting residual bytes

2013-06-02 Thread Xiang Wang
2013/5/31 Andy Shevchenko : > On Fri, May 31, 2013 at 11:21 AM, Xiang Wang wrote: >> In some of our drivers (e.g. UART) we may stop a running DMA >> before it finishes. So we need to know how many bytes have >> been transferred. > > Couple of comments below. > >> --- a/drivers/dma/mmp_pdma.c >> ++

Re: [PATCH] dma: mmp_pdma: support for getting residual bytes

2013-05-31 Thread Andy Shevchenko
On Fri, May 31, 2013 at 11:21 AM, Xiang Wang wrote: > In some of our drivers (e.g. UART) we may stop a running DMA > before it finishes. So we need to know how many bytes have > been transferred. Couple of comments below. > --- a/drivers/dma/mmp_pdma.c > +++ b/drivers/dma/mmp_pdma.c > @@ -589,7

[PATCH] dma: mmp_pdma: support for getting residual bytes

2013-05-31 Thread Xiang Wang
From: Xiang Wang In some of our drivers (e.g. UART) we may stop a running DMA before it finishes. So we need to know how many bytes have been transferred. Signed-off-by: Xiang Wang --- drivers/dma/mmp_pdma.c | 77 +++- 1 files changed, 69 insertion