Hi Simon,
On Thu, Sep 27, 2018 at 9:43 PM Simon Glass <s...@chromium.org> wrote:
>
> On 23 September 2018 at 06:42, Bin Meng <bmeng...@gmail.com> wrote:
> > At present the generic io{read,write}{8,16,32} routines only support
> > MMIO access. With architecture like x86 that has a separate IO space,
> > these routines cannot be used to access I/O ports.
> >
> > Implement x86-specific version to support both PIO and MMIO access,
> > so that drivers for multiple architectures can use these accessors
> > without the need to know whether it's MMIO or PIO.
> >
> > These are ported from Linux kernel lib/iomap.c, with slight changes.
> >
> > Signed-off-by: Bin Meng <bmeng...@gmail.com>
> > ---
> >
> > arch/Kconfig | 1 +
> > arch/x86/include/asm/io.h | 66
> > +++++++++++++++++++++++++++++++++++++++++++++++
> > 2 files changed, 67 insertions(+)
>
> Reviewed-by: Simon Glass <s...@chromium.org>
>
> Should we use regmap instead?
No, regmap is for something else, e.g. the same driver to be used on
different buses.
Regards,
Bin
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