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    SubjectRe: [rtc-linux] [PATCH/RFC 0/5] Generic RTC class driver
    On Wed, 25 Feb 2009, David Woodhouse wrote:
    > On Mon, 2009-02-23 at 13:34 +0100, Geert Uytterhoeven wrote:
    > > > my opinion on this kind of stuff is that I want to avoid the layering
    > > > of implementations under the rtc subsystem. I'd rather prefer that each
    > > > rtc device had its own driver.
    > > >
    > > > I've made error in the past, by accepting such kind of drivers, and
    > > > would like to avoid that it happens again.
    > >
    > > So you want us to kill the ppc_md.[gs]et_rtc_time() [ppc], mach_hwclk() [m68k],
    > > mach_gettod() [m68knommu] (and probably a few other) abstractions, and move all
    > > RTC code out of arch/ into seperate drivers under drivers/rtc/ instead?
    > That's the ideal... although did we get NTP sync working again yet?
    > The rtc-ppc driver was intended as a short-term workaround so that we
    > can enable the generic RTC class (which was required for PA Semi
    > Electra, iirc), and still have stuff work on other platforms.

    Sure. The only differences between your rtc-ppc driver and rtc-parisc were:
    - rtc-ppc uses the PPC RTC abstraction (ppc_md.[gs]et_rtc_time()),
    while rtc-parisc uses the genrtc abstraction layer ([gs]et_rtc_time()),
    which is shared by several architectures,
    - rtc-ppc has the platform device built-in in the driver, while rtc-parisc
    relies on the creation of the platform device in platform code.

    With kind regards,

    Geert Uytterhoeven
    Software Architect

    Sony Techsoft Centre Europe
    The Corporate Village · Da Vincilaan 7-D1 · B-1935 Zaventem · Belgium

    Phone: +32 (0)2 700 8453
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    A division of Sony Europe (Belgium) N.V.
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