From: Maxime Ripard <maxime.ripard@free-electrons.com>
To: linux@maxim.org.za, Nicolas Ferre <nicolas.ferre@atmel.com>,
Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>,
Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Boris Brezillon <boris@free-electrons.com>,
Alexandre Belloni <alexandre.belloni@free-electrons.com>,
Thomas Petazzoni <thomas@free-electrons.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Maxime Ripard <maxime.ripard@free-electrons.com>
Subject: [PATCH v2 03/14] AT91: PIT: Use DIV_ROUND_CLOSEST to compute the cycles
Date: Tue, 1 Jul 2014 11:33:16 +0200 [thread overview]
Message-ID: <1404207208-14513-4-git-send-email-maxime.ripard@free-electrons.com> (raw)
In-Reply-To: <1404207208-14513-1-git-send-email-maxime.ripard@free-electrons.com>
Until now, the pit_cycle computation was dividing the rate by HZ, rounding to
the closest integer, but without using the appropriate macro.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
---
arch/arm/mach-at91/at91sam926x_time.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/mach-at91/at91sam926x_time.c b/arch/arm/mach-at91/at91sam926x_time.c
index fd3170b65fbb..2e6f1a37ab90 100644
--- a/arch/arm/mach-at91/at91sam926x_time.c
+++ b/arch/arm/mach-at91/at91sam926x_time.c
@@ -252,7 +252,7 @@ void __init at91sam926x_pit_init(void)
if (IS_ERR(mck))
panic("AT91: PIT: Unable to get mck clk\n");
pit_rate = clk_get_rate(mck) / 16;
- pit_cycle = (pit_rate + HZ/2) / HZ;
+ pit_cycle = DIV_ROUND_CLOSEST(pit_rate, HZ);
WARN_ON(((pit_cycle - 1) & ~AT91_PIT_PIV) != 0);
/* Initialize and enable the timer */
--
2.0.0
next prev parent reply other threads:[~2014-07-01 9:37 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-01 9:33 [PATCH v2 00/14] AT91: PIT: Cleanups and move to drivers/clocksource Maxime Ripard
2014-07-01 9:33 ` [PATCH v2 01/14] AT91: PIT: Follow the general coding rules Maxime Ripard
2014-07-01 9:33 ` [PATCH v2 02/14] AT91: generic.h: Add include safe guards Maxime Ripard
2014-07-01 9:33 ` Maxime Ripard [this message]
2014-07-01 9:33 ` [PATCH v2 04/14] AT91: PIT: Use of_have_populated_dt instead of CONFIG_OF Maxime Ripard
2014-07-01 9:33 ` [PATCH v2 05/14] AT91: PIT: Rework probe functions Maxime Ripard
2014-07-01 9:33 ` [PATCH v2 06/14] AT91: dt: Remove init_time definitions Maxime Ripard
2014-07-01 9:33 ` [PATCH v2 07/14] AT91: PIT: Use consistent exit path in probe Maxime Ripard
2014-07-01 9:33 ` [PATCH v2 08/14] AT91: PIT: Use pr_fmt Maxime Ripard
2014-07-01 9:33 ` [PATCH v2 09/14] AT91: PIT: use request_irq instead of setup_irq Maxime Ripard
2014-07-01 9:33 ` [PATCH v2 10/14] AT91: PIT: (Almost) remove the global variables Maxime Ripard
2014-07-01 9:33 ` [PATCH v2 11/14] AT91: soc: Add init_time callback Maxime Ripard
2014-07-01 9:33 ` [PATCH v2 12/14] AT91: Convert the boards to the " Maxime Ripard
2014-07-01 9:33 ` [PATCH v2 13/14] AT91: PIT: Convert to an early_platform_device Maxime Ripard
2014-07-01 9:33 ` [PATCH v2 14/14] AT91: PIT: Move the driver to drivers/clocksource Maxime Ripard
2014-07-01 9:52 ` [PATCH v2 00/14] AT91: PIT: Cleanups and move " Boris BREZILLON
2014-07-01 16:01 ` Alexandre Belloni
2014-07-10 7:51 ` Maxime Ripard
2014-07-17 9:50 ` Maxime Ripard
2014-07-17 10:31 ` Daniel Lezcano
2014-07-17 13:45 ` Maxime Ripard
2014-07-21 9:14 ` Daniel Lezcano
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