From: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
To: Alessandro Zummo <a.zummo@towertech.it>
Cc: rtc-linux@googlegroups.com, Kyle McMartin <kyle@mcmartin.ca>,
David Woodhouse <dwmw2@infradead.org>,
Richard Zidlicky <rz@linux-m68k.org>,
linux-parisc@vger.kernel.org, linuxppc-dev@ozlabs.org,
linux-m68k@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH/RFC 0/5] Generic RTC class driver
Date: Fri, 20 Feb 2009 16:46:44 +0100 [thread overview]
Message-ID: <1235144809-32468-1-git-send-email-Geert.Uytterhoeven@sonycom.com> (raw)
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@sonycom.com
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next reply other threads:[~2009-02-20 15:47 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-20 15:46 Geert Uytterhoeven [this message]
2009-02-20 15:46 ` [PATCH/RFC 1/5] rtc-parisc: Add missing module alias Geert Uytterhoeven
2009-02-20 15:46 ` [PATCH/RFC 2/5] pa-risc: Rename rtc-parisc to rtc-generic Geert Uytterhoeven
2009-02-20 15:46 ` [PATCH/RFC 3/5] m68k: Enable rtc-generic Geert Uytterhoeven
2009-02-20 15:46 ` [PATCH/RFC 4/5] powerpc: Enable rtc-generic, and kill rtc-ppc Geert Uytterhoeven
2009-02-20 15:46 ` [PATCH/RFC 5/5] rtc: Kill genrtc, as all its users have been converted to rtc-generic Geert Uytterhoeven
2009-02-20 16:04 ` [rtc-linux] [PATCH/RFC 0/5] Generic RTC class driver Alessandro Zummo
2009-02-23 12:34 ` Geert Uytterhoeven
2009-02-23 15:05 ` [rtc-linux] " Alessandro Zummo
2009-02-24 17:56 ` Geert Uytterhoeven
2009-02-24 18:37 ` Alessandro Zummo
2009-02-25 1:14 ` Brad Boyer
2009-02-25 9:58 ` Geert Uytterhoeven
2009-02-24 21:35 ` [rtc-linux] " David Woodhouse
2009-02-24 22:11 ` Alessandro Zummo
2009-02-24 22:32 ` David Woodhouse
2009-02-25 10:00 ` Geert Uytterhoeven
2009-02-25 10:18 ` [rtc-linux] " Alessandro Zummo
2009-02-27 17:17 ` Maciej W. Rozycki
2009-02-27 17:19 ` Alessandro Zummo
2009-02-27 18:55 ` Richard Zidlicky
2009-03-02 9:54 ` Geert Uytterhoeven
2009-03-02 10:03 ` Alessandro Zummo
2009-03-02 10:28 ` Geert Uytterhoeven
2009-03-02 11:09 ` Alessandro Zummo
2009-03-03 10:41 ` Geert Uytterhoeven
2009-03-03 13:53 ` Alessandro Zummo
2009-03-03 19:06 ` Paul Mundt
2009-03-04 8:26 ` Geert Uytterhoeven
2009-03-04 12:47 ` Alessandro Zummo
2009-03-04 12:51 ` Geert Uytterhoeven
2009-02-25 9:54 ` [rtc-linux] " Geert Uytterhoeven
2009-02-24 18:46 ` Helge Deller
2009-02-25 9:54 ` Geert Uytterhoeven
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