I've been looking into problems with auto-loading the RTC driver on PPC (more
specifically on PS3):
- The recent "rtc-ppc" RTC class driver is not autoloaded by udev because
it's an old style platform driver that contains its own platform device.
- The alternative old "genrtc" driver is autoloaded on non-udev systems only
because it contains the module alias char-major-10-135. However, it's not
a new-style RTC class driver.
Fortunately there already exists a generic RTC class driver: "rtc-parisc".
Despite it's name, it's platform-independent, as it's build on top of the RTC
abstraction used by "genrtc".
This patch series
- adds a missing module alias to rtc-parisc,
- renames rtc-parisc to rtc-generic,
- converts the architectures that currently have CONFIG_GEN_RTC enabled in
their defconfig (m68k, parisc, powerpc) to rtc-generic,
- removes the obsolete rtc-ppc driver,
- removes the old genrtc driver.
Note that genrtc may be used on other archictectures as well: at least alpha
has the required infrastructure ([gs]et_rtc_time()). The Kconfig rules allow
genrtc to be enabled on several others (cris, h8300, mn10300, um, x86, xtensa).
Furthermore genrtc and rtc-generic are not 100% userspace compatible:
- /dev/rtc provided by genrtc uses a misc character device (10:135),
- /dev/rtc provided by rtc-generic uses a dynamic character device.
So perhaps we don't want to kill gen-rtc yet?
Any comments are welcomed!
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
Fax: +32 (0)2 700 8622
E-mail: Geert.Uytterhoeven@xxxxxxxxxxx
Internet: http://www.sony-europe.com/
A division of Sony Europe (Belgium) N.V.
VAT BE 0413.825.160 · RPR Brussels
Fortis · BIC GEBABEBB · IBAN BE41293037680010
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