From: Vineet Gupta <Vineet.Gupta1@synopsys.com>
To: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: <tglx@linutronix.de>, <linux-kernel@vger.kernel.org>,
<linux-snps-arc@lists.infradead.org>,
Noam Camus <noamca@mellanox.com>, <Alexey.Brodkin@synopsys.com>,
Vineet Gupta <Vineet.Gupta1@synopsys.com>
Subject: [PATCH 2/9] ARC: timer: rtc: implement read loop in "C" vs. inline asm
Date: Mon, 31 Oct 2016 15:48:09 -0700 [thread overview]
Message-ID: <1477954096-770-3-git-send-email-vgupta@synopsys.com> (raw)
In-Reply-To: <1477954096-770-1-git-send-email-vgupta@synopsys.com>
To allow for easy movement into drivers/clocksource
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
---
arch/arc/kernel/time.c | 13 +++++--------
1 file changed, 5 insertions(+), 8 deletions(-)
diff --git a/arch/arc/kernel/time.c b/arch/arc/kernel/time.c
index a2db010cde18..2c51e3cafad0 100644
--- a/arch/arc/kernel/time.c
+++ b/arch/arc/kernel/time.c
@@ -153,14 +153,11 @@ static cycle_t arc_read_rtc(struct clocksource *cs)
cycle_t full;
} stamp;
-
- __asm__ __volatile(
- "1: \n"
- " lr %0, [AUX_RTC_LOW] \n"
- " lr %1, [AUX_RTC_HIGH] \n"
- " lr %2, [AUX_RTC_CTRL] \n"
- " bbit0.nt %2, 31, 1b \n"
- : "=r" (stamp.low), "=r" (stamp.high), "=r" (status));
+ do {
+ stamp.low = read_aux_reg(AUX_RTC_LOW);
+ stamp.high = read_aux_reg(AUX_RTC_HIGH);
+ status = read_aux_reg(AUX_RTC_CTRL);
+ } while (!(status & 0x80000000UL));
return stamp.full;
}
--
2.7.4
next prev parent reply other threads:[~2016-10-31 22:50 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-23 12:12 [PATCH v2 0/3] Add clockevet for timer-nps driver to NPS400 SoC Noam Camus
2016-10-23 12:12 ` [PATCH v2 1/3] soc: Support for NPS HW scheduling Noam Camus
2016-10-31 10:26 ` Daniel Lezcano
2016-10-31 12:26 ` Noam Camus
2016-10-23 12:12 ` [PATCH v2 2/3] clocksource: update "fn" at CLOCKSOURCE_OF_DECLARE() of nps400 timer Noam Camus
2016-10-31 10:28 ` Daniel Lezcano
2016-10-31 15:19 ` Noam Camus
2016-10-23 12:12 ` [PATCH v2 3/3] clocksource: Add clockevent support to NPS400 driver Noam Camus
2016-10-30 20:41 ` Rob Herring
2016-10-31 10:52 ` Daniel Lezcano
2016-10-31 17:03 ` Noam Camus
2016-10-31 17:51 ` Vineet Gupta
2016-10-31 22:48 ` [PATCH 0/9] Move ARC timer code into drivers/clocksource/ Vineet Gupta
2016-10-31 22:48 ` [PATCH 1/9] ARC: timer: gfrc, rtc: Read BCR to detect whether hardware exists Vineet Gupta
2016-11-03 17:00 ` Daniel Lezcano
2016-11-03 17:41 ` Vineet Gupta
2016-10-31 22:48 ` Vineet Gupta [this message]
2016-11-03 17:02 ` [PATCH 2/9] ARC: timer: rtc: implement read loop in "C" vs. inline asm Daniel Lezcano
2016-11-03 17:45 ` Vineet Gupta
2016-10-31 22:48 ` [PATCH 3/9] ARC: timer: gfrc: boot print alongside other timers Vineet Gupta
2016-11-03 17:09 ` Daniel Lezcano
2016-11-03 17:47 ` Vineet Gupta
2016-11-03 17:51 ` Daniel Lezcano
2016-10-31 22:48 ` [PATCH 4/9] ARC: time: move time_init() out of the driver Vineet Gupta
2016-11-03 17:15 ` Daniel Lezcano
2016-10-31 22:48 ` [PATCH 5/9] ARC: breakout aux handling into a seperate header Vineet Gupta
2016-11-01 7:49 ` Noam Camus
2016-10-31 22:48 ` [PATCH 6/9] ARC: move mcip.h into include/soc and adjust the includes Vineet Gupta
2016-11-03 17:20 ` Daniel Lezcano
2016-10-31 22:48 ` [PATCH 7/9] ARC: breakout timer stuff into a seperate header Vineet Gupta
2016-11-03 17:25 ` Daniel Lezcano
2016-10-31 22:48 ` [PATCH 8/9] ARC: timer: rename config options Vineet Gupta
2016-10-31 22:48 ` [PATCH 9/9] clocksource: import ARC timer driver Vineet Gupta
2016-11-01 0:01 ` kbuild test robot
2016-11-01 0:45 ` Vineet Gupta
2016-11-01 20:42 ` Daniel Lezcano
2016-11-01 20:57 ` Vineet Gupta
2016-11-02 0:19 ` Daniel Lezcano
2016-11-02 1:03 ` Vineet Gupta
2016-11-03 16:40 ` Vineet Gupta
2016-11-03 16:50 ` Daniel Lezcano
2016-11-03 17:57 ` Vineet Gupta
2016-11-03 18:11 ` Daniel Lezcano
2016-11-03 18:43 ` Vineet Gupta
2016-11-03 17:33 ` Daniel Lezcano
2016-11-03 18:14 ` Daniel Lezcano
2016-11-03 18:47 ` Vineet Gupta
2016-11-03 17:28 ` [PATCH 0/9] Move ARC timer code into drivers/clocksource/ Daniel Lezcano
2016-11-01 20:01 ` [PATCH v2 3/3] clocksource: Add clockevent support to NPS400 driver Daniel Lezcano
2016-11-08 8:30 ` Noam Camus
2016-11-10 10:34 ` Daniel Lezcano
2016-11-10 13:00 ` Noam Camus
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1477954096-770-3-git-send-email-vgupta@synopsys.com \
--to=vineet.gupta1@synopsys.com \
--cc=Alexey.Brodkin@synopsys.com \
--cc=daniel.lezcano@linaro.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-snps-arc@lists.infradead.org \
--cc=noamca@mellanox.com \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).