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rtc: at91sam9: use standard readl/writel functions instead of raw versions 

Raw versions of writel and writel should not be directly used and should
be replaced by their relaxed versions (readl/writel_relaxed), which take
endianness conversion into account.

In this driver we prefer the standard readl/writel function which add the
appropriate memory barrier around the access (the performance penalty is
negligible for this kind of application).

Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Johan Hovold <johan@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
This commit is contained in:
Boris BREZILLON 2014-09-23 13:13:52 +02:00 committed by Nicolas Ferre
parent 6575bd7cbc
commit 272f1dfa61
1 changed files with 4 additions and 4 deletions
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8
drivers/rtc/rtc-at91sam9.c
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@ -77,14 +77,14 @@ struct sam9_rtc {
};
#define rtt_readl(rtc, field) \
__raw_readl((rtc)->rtt + AT91_RTT_ ## field)
readl((rtc)->rtt + AT91_RTT_ ## field)
#define rtt_writel(rtc, field, val) \
__raw_writel((val), (rtc)->rtt + AT91_RTT_ ## field)
writel((val), (rtc)->rtt + AT91_RTT_ ## field)
#define gpbr_readl(rtc) \
__raw_readl((rtc)->gpbr)
readl((rtc)->gpbr)
#define gpbr_writel(rtc, val) \
__raw_writel((val), (rtc)->gpbr)
writel((val), (rtc)->gpbr)
/*
* Read current time and date in RTC