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    SubjectRe: [PATCHv4 4/6] input/cma3000_d0x: Add CMA3000 spi support
    On Tue, Oct 25, 2011 at 09:32:27AM +0100, Jonathan Cameron wrote:
    > On 10/25/11 08:24, Ricardo Ribalda Delgado wrote:

    > > It is not on linux-next, and also it cannot be used directly, in order
    > > to read you have to do set reg= (reg << 2) | 2; And AFAIK it is not
    > > supported by the regmap

    > My gut feeling is it would easy enough to add if it can't currently
    > be done. Mark?

    That should be trivial to add - the | 2 bit is already supported in
    -next and will be sent to Linus this merge window, adding the shift is
    just a simple matter of programming.

    > Gains here are leveraging the bus abstractions from there. There aren't
    > enough registers to gain from caching etc.

    Depends on the workload more than the number of registers - if you're
    able to eliminate enough reads then it can give a bit of a performance
    boost. But it's completely optional either way.

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      Last update: 2011-10-25 10:39    [W:0.020 / U:9.696 seconds]
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