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>,
Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-pm@vger.kernel.org
Subject: [PATCH v2 02/19] PM / devfreq: tegra: Replace readl-writel with relaxed versions
Date: Mon, 15 Apr 2019 17:54:48 +0300 [thread overview]
Message-ID: <20190415145505.18397-3-digetx@gmail.com> (raw)
In-Reply-To: <20190415145505.18397-1-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 02905978abe1..0c0909fba545 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
next prev parent reply other threads:[~2019-04-15 14:55 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-15 14:54 [PATCH v2 00/19] NVIDIA Tegra devfreq improvements and Tegra20/30 support Dmitry Osipenko
2019-04-15 14:54 ` [PATCH v2 01/19] PM / devfreq: tegra: Fix kHz to Hz conversion Dmitry Osipenko
2019-04-16 1:45 ` Chanwoo Choi
2019-04-16 13:24 ` Dmitry Osipenko
2019-04-15 14:54 ` Dmitry Osipenko [this message]
2019-04-17 1:02 ` [PATCH v2 02/19] PM / devfreq: tegra: Replace readl-writel with relaxed versions Chanwoo Choi
2019-04-15 14:54 ` [PATCH v2 03/19] PM / devfreq: tegra: Don't ignore clk errors Dmitry Osipenko
2019-04-16 1:52 ` Chanwoo Choi
2019-04-16 13:42 ` Dmitry Osipenko
2019-04-15 14:54 ` [PATCH v2 04/19] PM / devfreq: tegra: Don't set EMC clock rate to maximum on probe Dmitry Osipenko
2019-04-16 1:59 ` Chanwoo Choi
2019-04-16 13:44 ` Dmitry Osipenko
2019-04-15 14:54 ` [PATCH v2 05/19] PM / devfreq: tegra: Replace write memory barrier with the read barrier Dmitry Osipenko
2019-04-16 8:00 ` Chanwoo Choi
2019-04-16 13:57 ` Dmitry Osipenko
2019-04-17 0:55 ` Chanwoo Choi
2019-04-15 14:54 ` [PATCH v2 06/19] PM / devfreq: tegra: Fix missed error checking on devfreq initialization failure Dmitry Osipenko
2019-04-16 2:32 ` Chanwoo Choi
2019-04-16 14:29 ` Dmitry Osipenko
2019-04-17 1:01 ` Chanwoo Choi
2019-04-15 14:54 ` [PATCH v2 07/19] PM / devfreq: tegra: Register clk notifier in the end of driver's probe Dmitry Osipenko
2019-04-15 14:54 ` [PATCH v2 08/19] PM / devfreq: tegra: Remove OPP entries on driver removal Dmitry Osipenko
2019-04-15 14:54 ` [PATCH v2 09/19] PM / devfreq: tegra: Change interrupt request order Dmitry Osipenko
2019-04-15 14:54 ` [PATCH v2 10/19] PM / devfreq: tegra: Drop primary interrupt handler Dmitry Osipenko
2019-04-16 5:56 ` Chanwoo Choi
2019-04-16 15:23 ` Dmitry Osipenko
2019-04-17 0:31 ` Chanwoo Choi
2019-04-15 14:54 ` [PATCH v2 11/19] PM / devfreq: tegra: De-initialize properly on driver's probe error Dmitry Osipenko
2019-04-16 6:21 ` Chanwoo Choi
2019-04-15 14:54 ` [PATCH v2 12/19] PM / devfreq: tegra: Avoid inconsistency of current frequency value Dmitry Osipenko
2019-04-16 7:15 ` Chanwoo Choi
2019-04-16 15:40 ` Dmitry Osipenko
2019-04-17 0:35 ` Chanwoo Choi
2019-04-15 14:54 ` [PATCH v2 13/19] PM / devfreq: tegra: Mark ACTMON's governor as immutable Dmitry Osipenko
2019-04-16 7:17 ` Chanwoo Choi
2019-04-15 14:55 ` [PATCH v2 14/19] PM / devfreq: tegra: Move governor registration to driver's probe Dmitry Osipenko
2019-04-16 7:30 ` Chanwoo Choi
2019-04-15 14:55 ` [PATCH v2 15/19] PM / devfreq: tegra: Synchronize IRQ after masking it in hardware Dmitry Osipenko
2019-04-16 7:41 ` Chanwoo Choi
2019-04-16 15:42 ` Dmitry Osipenko
2019-04-15 14:55 ` [PATCH v2 16/19] PM / devfreq: tegra: Reconfigure hardware on governor's restart Dmitry Osipenko
2019-04-15 14:55 ` [PATCH v2 17/19] PM / devfreq: tegra: Support Tegra30 Dmitry Osipenko
2019-04-16 7:48 ` Chanwoo Choi
2019-04-16 15:49 ` Dmitry Osipenko
2019-04-17 0:28 ` Chanwoo Choi
2019-04-15 14:55 ` [PATCH v2 18/19] PM / devfreq: tegra: Enable COMPILE_TEST for the driver Dmitry Osipenko
2019-04-16 7:43 ` Chanwoo Choi
2019-04-16 15:52 ` Dmitry Osipenko
2019-04-17 0:27 ` Chanwoo Choi
2019-04-15 14:55 ` [PATCH v2 19/19] PM / devfreq: Introduce driver for NVIDIA Tegra20 Dmitry Osipenko
2019-04-16 8:31 ` Chanwoo Choi
2019-04-16 16:11 ` Dmitry Osipenko
2019-04-17 0:26 ` Chanwoo Choi
2019-04-17 9:36 ` Dmitry Osipenko
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