linux-pm.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
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-pm@vger.kernel.org, linux-tegra@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH v4 02/16] PM / devfreq: tegra: Replace readl-writel with relaxed versions
Date: Thu,  2 May 2019 02:38:01 +0300	[thread overview]
Message-ID: <20190501233815.32643-3-digetx@gmail.com> (raw)
Message-ID: <20190501233801.86s4JGVyFN1jIG7oKLkBJeSDcAk4lVO6FCzws20GNo8@z> (raw)
In-Reply-To: <20190501233815.32643-1-digetx@gmail.com>

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

Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
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 43cd1233f87b..f7378a42d184 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:[~2019-05-01 23:43 UTC|newest]

Thread overview: 74+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20190501234148epcas5p1cc9a8dafa9ee6d8d046d1292b8270727@epcas5p1.samsung.com>
2019-05-01 23:37 ` [PATCH v4 00/16] NVIDIA Tegra devfreq improvements and Tegra20/30 support Dmitry Osipenko
2019-05-01 23:37   ` Dmitry Osipenko
2019-05-01 23:38   ` [PATCH v4 01/16] PM / devfreq: tegra: Fix kHz to Hz conversion Dmitry Osipenko
2019-05-01 23:38     ` Dmitry Osipenko
2019-06-04 10:54     ` Thierry Reding
2019-05-01 23:38   ` Dmitry Osipenko [this message]
2019-05-01 23:38     ` [PATCH v4 02/16] PM / devfreq: tegra: Replace readl-writel with relaxed versions Dmitry Osipenko
2019-06-04 10:55     ` Thierry Reding
2019-05-01 23:38   ` [PATCH v4 03/16] PM / devfreq: tegra: Replace write memory barrier with the read barrier Dmitry Osipenko
2019-05-01 23:38     ` Dmitry Osipenko
2019-06-04 10:56     ` Thierry Reding
2019-05-01 23:38   ` [PATCH v4 04/16] PM / devfreq: tegra: Don't ignore clk errors Dmitry Osipenko
2019-05-01 23:38     ` Dmitry Osipenko
2019-06-04 10:57     ` Thierry Reding
2019-05-01 23:38   ` [PATCH v4 05/16] PM / devfreq: tegra: Don't set EMC clock rate to maximum on probe Dmitry Osipenko
2019-05-01 23:38     ` Dmitry Osipenko
2019-06-04 11:00     ` Thierry Reding
2019-06-04 13:05       ` Dmitry Osipenko
2019-05-01 23:38   ` [PATCH v4 06/16] PM / devfreq: tegra: Drop primary interrupt handler Dmitry Osipenko
2019-05-01 23:38     ` Dmitry Osipenko
2019-06-04 11:02     ` Thierry Reding
2019-05-01 23:38   ` [PATCH v4 07/16] PM / devfreq: tegra: Properly disable interrupts Dmitry Osipenko
2019-05-01 23:38     ` Dmitry Osipenko
2019-06-04 11:07     ` Thierry Reding
2019-06-04 13:40       ` Dmitry Osipenko
2019-06-04 14:06         ` Thierry Reding
2019-06-04 14:59           ` Dmitry Osipenko
2019-06-04 22:55         ` Dmitry Osipenko
2019-06-07 16:58           ` Dmitry Osipenko
2019-05-01 23:38   ` [PATCH v4 08/16] PM / devfreq: tegra: Clean up driver's probe / remove Dmitry Osipenko
2019-05-01 23:38     ` Dmitry Osipenko
2019-06-04 11:09     ` Thierry Reding
2019-05-01 23:38   ` [PATCH v4 09/16] PM / devfreq: tegra: Avoid inconsistency of current frequency value Dmitry Osipenko
2019-05-01 23:38     ` Dmitry Osipenko
2019-06-04 11:14     ` Thierry Reding
2019-05-01 23:38   ` [PATCH v4 10/16] PM / devfreq: tegra: Mark ACTMON's governor as immutable Dmitry Osipenko
2019-05-01 23:38     ` Dmitry Osipenko
2019-06-04 11:15     ` Thierry Reding
2019-05-01 23:38   ` [PATCH v4 11/16] PM / devfreq: tegra: Move governor registration to driver's probe Dmitry Osipenko
2019-05-01 23:38     ` Dmitry Osipenko
2019-06-04 11:15     ` Thierry Reding
2019-05-01 23:38   ` [PATCH v4 12/16] PM / devfreq: tegra: Reconfigure hardware on governor's restart Dmitry Osipenko
2019-05-01 23:38     ` Dmitry Osipenko
2019-06-04 11:17     ` Thierry Reding
2019-05-01 23:38   ` [PATCH v4 13/16] PM / devfreq: tegra: Support Tegra30 Dmitry Osipenko
2019-05-01 23:38     ` Dmitry Osipenko
2019-06-04 11:18     ` Thierry Reding
2019-05-01 23:38   ` [PATCH v4 14/16] PM / devfreq: tegra: Enable COMPILE_TEST for the driver Dmitry Osipenko
2019-05-01 23:38     ` Dmitry Osipenko
2019-06-04 11:20     ` Thierry Reding
2019-06-04 13:53       ` Dmitry Osipenko
2019-06-04 14:10         ` Thierry Reding
2019-06-04 14:18           ` Thierry Reding
2019-06-04 14:41             ` Dmitry Osipenko
2019-06-04 14:50               ` Thierry Reding
2019-06-04 15:15                 ` Dmitry Osipenko
2019-05-01 23:38   ` [PATCH v4 15/16] PM / devfreq: tegra: Rename tegra-devfreq.c to tegra30-devfreq.c Dmitry Osipenko
2019-05-01 23:38     ` Dmitry Osipenko
2019-06-04 11:23     ` Thierry Reding
2019-06-04 14:35       ` Dmitry Osipenko
2019-05-01 23:38   ` [PATCH v4 16/16] PM / devfreq: Introduce driver for NVIDIA Tegra20 Dmitry Osipenko
2019-05-01 23:38     ` Dmitry Osipenko
2019-06-04 11:25     ` Thierry Reding
2019-06-04 13:57       ` Dmitry Osipenko
2019-05-03  0:31   ` [PATCH v4 00/16] NVIDIA Tegra devfreq improvements and Tegra20/30 support Chanwoo Choi
2019-05-03  0:31     ` Chanwoo Choi
2019-05-03  0:52     ` Dmitry Osipenko
2019-05-03  0:52       ` Dmitry Osipenko
2019-06-03 16:52       ` Dmitry Osipenko
2019-06-04  0:49         ` Chanwoo Choi
2019-06-04 23:09           ` Dmitry Osipenko
2019-06-23 17:17             ` Dmitry Osipenko
2019-06-23 23:50               ` Chanwoo Choi
2019-06-24  0:35                 ` Dmitry Osipenko

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=20190501233815.32643-3-digetx@gmail.com \
    --to=digetx@gmail.com \
    --cc=cw00.choi@samsung.com \
    --cc=jonathanh@nvidia.com \
    --cc=kyungmin.park@samsung.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=linux-tegra@vger.kernel.org \
    --cc=myungjoo.ham@samsung.com \
    --cc=thierry.reding@gmail.com \
    --cc=tomeu.vizoso@collabora.com \
    /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).