The original PC-style CMOS RTC driver is so weird and full of hacks that it has reached the status of a major piece of art.
Despite noticeable efforts to carry on with the spirit of tainting every architecture under the sun, this patch series tries to make the rtc-cmos driver a slightly better citizen by allowing architecture code *not* to provide an exported lock when it is not strictly required, and to allow for MMIO accessors on architectures that don't have IO ports. Please have a bucket ready. The actual goal of the exercise is to allow the use of the RTC emulation provided by kvmtool in KVM/ARM guests. This series has also been tested on x86. Marc Zyngier (7): rtc-cmos: abstract IO accessors rtc-cmos: abstract locking primitives rtc-cmos: allow MMIO to be used when initialized from FDT rtc-cmos: allow strictly MMIO based configurations rtc-cmos: implement driver private locking ARM: rtc: update CMOS RTC to support MMIO and private lock arm64: rtc: plug the PC CMOS RTC using MMIO accessors arch/arm/kernel/time.c | 7 -- arch/arm64/include/asm/mc146818rtc.h | 10 ++ drivers/rtc/Kconfig | 15 ++- drivers/rtc/rtc-cmos.c | 217 +++++++++++++++++++++++++---------- include/asm-generic/rtc.h | 92 ++++++++++----- 5 files changed, 240 insertions(+), 101 deletions(-) create mode 100644 arch/arm64/include/asm/mc146818rtc.h -- 1.8.3.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
