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From: Dmitry Osipenko <digetx@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>,
	Jonathan Hunter <jonathanh@nvidia.com>,
	MyungJoo Ham <myungjoo.ham@samsung.com>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	Chanwoo Choi <cw00.choi@samsung.com>
Cc: linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-pm@vger.kernel.org
Subject: [PATCH v1 2/8] PM / devfreq: tegra: Replace readl-writel with relaxed versions
Date: Fri, 12 Apr 2019 01:29:08 +0300	[thread overview]
Message-ID: <20190411222914.25539-3-digetx@gmail.com> (raw)
In-Reply-To: <20190411222914.25539-1-digetx@gmail.com>

There is no need to insert memory barrier on each readl/writel
invocation, hence use the relaxed versions.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 drivers/devfreq/tegra-devfreq.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/devfreq/tegra-devfreq.c b/drivers/devfreq/tegra-devfreq.c
index ec4ff55f5eea..d749399f67ae 100644
--- a/drivers/devfreq/tegra-devfreq.c
+++ b/drivers/devfreq/tegra-devfreq.c
@@ -191,23 +191,23 @@ static struct tegra_actmon_emc_ratio actmon_emc_ratios[] = {
 
 static u32 actmon_readl(struct tegra_devfreq *tegra, u32 offset)
 {
-	return readl(tegra->regs + offset);
+	return readl_relaxed(tegra->regs + offset);
 }
 
 static void actmon_writel(struct tegra_devfreq *tegra, u32 val, u32 offset)
 {
-	writel(val, tegra->regs + offset);
+	writel_relaxed(val, tegra->regs + offset);
 }
 
 static u32 device_readl(struct tegra_devfreq_device *dev, u32 offset)
 {
-	return readl(dev->regs + offset);
+	return readl_relaxed(dev->regs + offset);
 }
 
 static void device_writel(struct tegra_devfreq_device *dev, u32 val,
 			  u32 offset)
 {
-	writel(val, dev->regs + offset);
+	writel_relaxed(val, dev->regs + offset);
 }
 
 static unsigned long do_percent(unsigned long val, unsigned int pct)
-- 
2.21.0


  parent reply	other threads:[~2019-04-11 22:30 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-11 22:29 [PATCH v1 0/8] devfreq: Tegra devfreq fixes / improvements and Tegra30 support Dmitry Osipenko
2019-04-11 22:29 ` [PATCH v1 1/8] PM / devfreq: tegra: Fix kHz to Hz conversion Dmitry Osipenko
     [not found]   ` <20190412013413.4D52D20818@mail.kernel.org>
2019-04-12 10:14     ` Dmitry Osipenko
2019-04-12 16:56   ` Dmitry Osipenko
2019-04-11 22:29 ` Dmitry Osipenko [this message]
2019-04-11 22:29 ` [PATCH v1 3/8] PM / devfreq: tegra: Don't ignore clk errors Dmitry Osipenko
2019-04-11 22:29 ` [PATCH v1 4/8] PM / devfreq: tegra: Don't release IRQ manually on driver removal Dmitry Osipenko
2019-04-11 22:29 ` [PATCH v1 5/8] PM / devfreq: tegra: Don't set EMC clock rate to maximum on probe Dmitry Osipenko
2019-04-11 22:29 ` [PATCH v1 6/8] PM / devfreq: tegra: Drop spinlock Dmitry Osipenko
2019-04-11 22:29 ` [PATCH v1 7/8] PM / devfreq: tegra: Remove OPP entries on driver removal Dmitry Osipenko
2019-04-11 22:29 ` [PATCH v1 8/8] PM / devfreq: tegra: Support Tegra30 Dmitry Osipenko

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