Re: [Patch v4 2/2] dmaengine: Add ADM driver

From: Andy Gross
Date: Tue Mar 17 2015 - 01:04:44 EST


On Mon, Mar 16, 2015 at 08:15:26AM -0000, sricharan@xxxxxxxxxxxxxx wrote:
> Hi,
>
> <snip>
> >
> >>
> >> > +static int adm_get_blksize(unsigned int burst)
> >> > +{
> >> > + int ret;
> >> > +
> >> > + switch (burst) {
> >> > + case 16:
> >> > + ret = 0;
> >> > + break;
> >> > + case 32:
> >> > + ret = 1;
> >> > + break;
> >> > + case 64:
> >> > + ret = 2;
> >> > + break;
> >> > + case 128:
> >> > + ret = 3;
> >> > + break;
> >> > + case 192:
> >> > + ret = 4;
> >> > + break;
> >> > + case 256:
> >> > + ret = 5;
> >> > + break;
> >> ffs(burst>>4) ?
> >
> > that should work nicely. thanks.
> >
> Will not work for 192, 256 ?

you are right. I'll have to separate those out into 2 more cases. Good catch!

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