From: Dmitry Osipenko <digetx@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>,
MyungJoo Ham <myungjoo.ham@samsung.com>,
Kyungmin Park <kyungmin.park@samsung.com>,
Chanwoo Choi <cw00.choi@samsung.com>,
Jonathan Hunter <jonathanh@nvidia.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 v2 11/17] PM / devfreq: tegra30: Add debug messages
Date: Wed, 26 Jun 2019 04:32:45 +0300 [thread overview]
Message-ID: <20190626013252.30470-12-digetx@gmail.com> (raw)
In-Reply-To: <20190626013252.30470-1-digetx@gmail.com>
Add debug messages to know about what's happening in hardware and how
driver reacts.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
drivers/devfreq/tegra30-devfreq.c | 35 +++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/drivers/devfreq/tegra30-devfreq.c b/drivers/devfreq/tegra30-devfreq.c
index 1e704289c129..8ef7ed8d7e10 100644
--- a/drivers/devfreq/tegra30-devfreq.c
+++ b/drivers/devfreq/tegra30-devfreq.c
@@ -41,6 +41,7 @@
#define ACTMON_DEV_AVG_UPPER_WMARK 0x10
#define ACTMON_DEV_AVG_LOWER_WMARK 0x14
#define ACTMON_DEV_COUNT_WEIGHT 0x18
+#define ACTMON_DEV_COUNT 0x1c
#define ACTMON_DEV_AVG_COUNT 0x20
#define ACTMON_DEV_INTR_STATUS 0x24
@@ -276,6 +277,9 @@ static void tegra_actmon_get_lower_upper(struct tegra_devfreq *tegra,
unsigned long *lower,
unsigned long *upper)
{
+ struct device *ddev = tegra->devfreq->dev.parent;
+ u32 offset = dev->config->offset;
+
/*
* Memory frequencies are guaranteed to have 1MHz granularity
* and thus we need this rounding down to get a proper watermarks
@@ -288,6 +292,9 @@ static void tegra_actmon_get_lower_upper(struct tegra_devfreq *tegra,
*lower = tegra_actmon_lower_freq(tegra, target_freq);
*upper = tegra_actmon_upper_freq(tegra, target_freq);
+ dev_dbg(ddev, "%03x: target_freq %lu lower freq %lu upper freq %lu\n",
+ offset, target_freq, *lower, *upper);
+
*lower /= KHZ;
*upper /= KHZ;
@@ -367,11 +374,31 @@ static void tegra_devfreq_update_wmark(struct tegra_devfreq *tegra,
device_writel(dev, lower + delta, ACTMON_DEV_LOWER_WMARK);
}
+static void actmon_device_debug(struct tegra_devfreq *tegra,
+ struct tegra_devfreq_device *dev,
+ const char *prefix)
+{
+ dev_dbg(tegra->devfreq->dev.parent,
+ "%03x: %s: 0x%08x 0x%08x a %u %u %u c %u %u %u b %lu cpu %u\n",
+ dev->config->offset, prefix,
+ device_readl(dev, ACTMON_DEV_INTR_STATUS),
+ device_readl(dev, ACTMON_DEV_CTRL),
+ device_readl(dev, ACTMON_DEV_AVG_COUNT),
+ device_readl(dev, ACTMON_DEV_AVG_LOWER_WMARK),
+ device_readl(dev, ACTMON_DEV_AVG_UPPER_WMARK),
+ device_readl(dev, ACTMON_DEV_COUNT),
+ device_readl(dev, ACTMON_DEV_LOWER_WMARK),
+ device_readl(dev, ACTMON_DEV_UPPER_WMARK),
+ dev->boost_freq, cpufreq_get(0));
+}
+
static void actmon_isr_device(struct tegra_devfreq *tegra,
struct tegra_devfreq_device *dev)
{
u32 intr_status, dev_ctrl, avg_intr_mask;
+ actmon_device_debug(tegra, dev, "isr+");
+
dev->avg_count = device_readl(dev, ACTMON_DEV_AVG_COUNT);
intr_status = device_readl(dev, ACTMON_DEV_INTR_STATUS);
dev_ctrl = device_readl(dev, ACTMON_DEV_CTRL);
@@ -421,6 +448,8 @@ static void actmon_isr_device(struct tegra_devfreq *tegra,
device_writel(dev, dev_ctrl, ACTMON_DEV_CTRL);
device_writel(dev, ACTMON_INTR_STATUS_CLEAR, ACTMON_DEV_INTR_STATUS);
+
+ actmon_device_debug(tegra, dev, "isr-");
}
static unsigned long actmon_update_target(struct tegra_devfreq *tegra,
@@ -710,6 +739,7 @@ static struct devfreq_dev_profile tegra_devfreq_profile = {
static int tegra_governor_get_target(struct devfreq *devfreq,
unsigned long *freq)
{
+ struct device *ddev = devfreq->dev.parent;
struct devfreq_dev_status *stat;
struct tegra_devfreq *tegra;
struct tegra_devfreq_device *dev;
@@ -732,6 +762,11 @@ static int tegra_governor_get_target(struct devfreq *devfreq,
dev_target_freq = actmon_update_target(tegra, dev);
target_freq = max(target_freq, dev_target_freq);
+
+ dev_dbg(ddev, "%03x: upd: dev_target_freq %lu\n",
+ dev->config->offset, dev_target_freq);
+
+ actmon_device_debug(tegra, dev, "upd");
}
*freq = target_freq * KHZ;
--
2.22.0
next prev parent reply other threads:[~2019-06-26 1:35 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-26 1:32 [PATCH v2 00/17] More improvements for Tegra30 devfreq driver Dmitry Osipenko
2019-06-26 1:32 ` [PATCH v2 01/17] PM / devfreq: tegra30: Change irq type to unsigned int Dmitry Osipenko
2019-06-26 1:32 ` [PATCH v2 02/17] PM / devfreq: tegra30: Keep interrupt disabled while governor is stopped Dmitry Osipenko
2019-06-26 1:32 ` [PATCH v2 03/17] PM / devfreq: tegra30: Handle possible round-rate error Dmitry Osipenko
2019-06-26 1:32 ` [PATCH v2 04/17] PM / devfreq: tegra30: Drop write-barrier Dmitry Osipenko
2019-06-26 1:32 ` [PATCH v2 05/17] PM / devfreq: tegra30: Set up watermarks properly Dmitry Osipenko
2019-06-26 1:32 ` [PATCH v2 06/17] PM / devfreq: tegra30: Tuneup boosting thresholds Dmitry Osipenko
2019-06-26 1:32 ` [PATCH v2 07/17] PM / devfreq: tegra30: Use CPUFreq notifier Dmitry Osipenko
2019-06-26 1:32 ` [PATCH v2 08/17] PM / devfreq: tegra30: Move clk-notifier's registration to governor's start Dmitry Osipenko
2019-06-26 1:32 ` [PATCH v2 09/17] PM / devfreq: tegra30: Reset boosting on startup Dmitry Osipenko
2019-06-26 1:32 ` [PATCH v2 10/17] PM / devfreq: tegra30: Don't enable consecutive-down interrupt " Dmitry Osipenko
2019-06-26 1:32 ` Dmitry Osipenko [this message]
2019-06-26 1:32 ` [PATCH v2 12/17] PM / devfreq: tegra30: Inline all one-line functions Dmitry Osipenko
2019-06-26 1:32 ` [PATCH v2 13/17] PM / devfreq: tegra30: Constify structs Dmitry Osipenko
2019-06-26 1:32 ` [PATCH v2 14/17] PM / devfreq: tegra30: Ensure that target freq won't overflow Dmitry Osipenko
2019-06-26 1:32 ` [PATCH v2 15/17] PM / devfreq: tegra30: Fix integer overflow on CPU's freq max out Dmitry Osipenko
2019-06-26 1:32 ` [PATCH v2 16/17] PM / devfreq: tegra30: Use kHz units uniformly in the code Dmitry Osipenko
2019-06-26 1:32 ` [PATCH v2 17/17] PM / devfreq: tegra20/30: Add Dmitry as a maintainer Dmitry Osipenko
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