From: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
To: Thomas Abraham <thomas.ab@samsung.com>,
Sylwester Nawrocki <s.nawrocki@samsung.com>,
Michael Turquette <mturquette@baylibre.com>,
Kukjin Kim <kgene.kim@samsung.com>, Kukjin Kim <kgene@kernel.org>,
Viresh Kumar <viresh.kumar@linaro.org>,
Krzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: Tomasz Figa <tomasz.figa@gmail.com>,
Lukasz Majewski <l.majewski@samsung.com>,
Heiko Stuebner <heiko@sntech.de>,
Chanwoo Choi <cw00.choi@samsung.com>,
Kevin Hilman <khilman@linaro.org>,
Javier Martinez Canillas <javier@dowhile0.org>,
Tobias Jakobi <tjakobi@math.uni-bielefeld.de>,
Anand Moon <linux.amoon@gmail.com>,
linux-samsung-soc@vger.kernel.org, linux-clk@vger.kernel.org,
linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, b.zolnierkie@samsung.com
Subject: [PATCH v2 1/7] opp: add dev_pm_opp_get_turbo_mode_setting() helper
Date: Thu, 09 Jul 2015 17:43:35 +0200 [thread overview]
Message-ID: <1436456621-29839-2-git-send-email-b.zolnierkie@samsung.com> (raw)
In-Reply-To: <1436456621-29839-1-git-send-email-b.zolnierkie@samsung.com>
Add dev_pm_opp_get_turbo_mode_setting() helper for getting turbo
mode setting for a given opp.
Cc: Tomasz Figa <tomasz.figa@gmail.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Javier Martinez Canillas <javier@dowhile0.org>
Cc: Thomas Abraham <thomas.ab@samsung.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
---
drivers/base/power/opp.c | 31 +++++++++++++++++++++++++++++++
include/linux/pm_opp.h | 7 +++++++
2 files changed, 38 insertions(+)
diff --git a/drivers/base/power/opp.c b/drivers/base/power/opp.c
index e24502a2..6b34b2a 100644
--- a/drivers/base/power/opp.c
+++ b/drivers/base/power/opp.c
@@ -287,6 +287,37 @@ unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
EXPORT_SYMBOL_GPL(dev_pm_opp_get_freq);
/**
+ * dev_pm_opp_get_turbo_mode_setting() - Gets the turbo setting
+ * @opp: opp for which turbo mode setting has to be returned for
+ *
+ * Return: turbo mode setting corresponding to the opp (true or false)
+ *
+ * Locking: This function must be called under rcu_read_lock(). opp is a rcu
+ * protected pointer. This means that opp which could have been fetched by
+ * opp_find_freq_{exact,ceil,floor} functions is valid as long as we are
+ * under RCU lock. The pointer returned by the opp_find_freq family must be
+ * used in the same section as the usage of this function with the pointer
+ * prior to unlocking with rcu_read_unlock() to maintain the integrity of the
+ * pointer.
+ */
+bool dev_pm_opp_get_turbo_mode_setting(struct dev_pm_opp *opp)
+{
+ struct dev_pm_opp *tmp_opp;
+ bool f = false;
+
+ opp_rcu_lockdep_assert();
+
+ tmp_opp = rcu_dereference(opp);
+ if (unlikely(IS_ERR_OR_NULL(tmp_opp)) || !tmp_opp->available)
+ pr_err("%s: Invalid parameters\n", __func__);
+ else
+ f = tmp_opp->turbo;
+
+ return f;
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_get_turbo_mode_setting);
+
+/**
* dev_pm_opp_get_max_clock_latency() - Get max clock latency in nanoseconds
* @dev: device for which we do this operation
*
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index bb52fae..7856baf 100644
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -30,6 +30,8 @@ unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp);
unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp);
+bool dev_pm_opp_get_turbo_mode_setting(struct dev_pm_opp *opp);
+
int dev_pm_opp_get_opp_count(struct device *dev);
unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev);
@@ -63,6 +65,11 @@ static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
return 0;
}
+static inline bool dev_pm_opp_get_turbo_mode_setting(struct dev_pm_opp *opp)
+{
+ return false;
+}
+
static inline int dev_pm_opp_get_opp_count(struct device *dev)
{
return 0;
--
1.9.1
next prev parent reply other threads:[~2015-07-09 15:44 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-09 15:43 [PATCH v2 0/7] cpufreq: use generic cpufreq drivers for Exynos4x12 platform Bartlomiej Zolnierkiewicz
2015-07-09 15:43 ` Bartlomiej Zolnierkiewicz [this message]
2015-07-10 2:17 ` [PATCH v2 1/7] opp: add dev_pm_opp_get_turbo_mode_setting() helper Krzysztof Kozlowski
2015-07-27 8:33 ` Viresh Kumar
2015-07-09 15:43 ` [PATCH v2 2/7] cpufreq: opp: fix handling of turbo modes Bartlomiej Zolnierkiewicz
2015-07-10 2:20 ` Krzysztof Kozlowski
2015-07-27 8:35 ` Viresh Kumar
2015-07-27 10:24 ` Bartlomiej Zolnierkiewicz
2015-07-27 10:35 ` Viresh Kumar
2015-07-27 11:14 ` Bartlomiej Zolnierkiewicz
2015-07-27 11:36 ` Viresh Kumar
2015-07-27 11:47 ` Bartlomiej Zolnierkiewicz
2015-07-30 14:37 ` Kukjin Kim
2015-07-31 18:58 ` Bartlomiej Zolnierkiewicz
2015-08-04 1:31 ` Krzysztof Kozlowski
2015-07-09 15:43 ` [PATCH v2 3/7] cpufreq-dt: add turbo modes support Bartlomiej Zolnierkiewicz
2015-07-10 8:22 ` Krzysztof Kozlowski
2015-07-27 8:37 ` Viresh Kumar
2015-07-27 11:01 ` Bartlomiej Zolnierkiewicz
2015-07-27 11:33 ` Viresh Kumar
2015-07-27 11:58 ` Bartlomiej Zolnierkiewicz
2015-07-27 12:01 ` Viresh Kumar
2015-07-09 15:43 ` [PATCH v2 4/7] clk: samsung: exynos4x12: add cpu clock configuration data and instantiate cpu clock Bartlomiej Zolnierkiewicz
2015-07-10 8:30 ` Krzysztof Kozlowski
2015-07-10 16:12 ` Javier Martinez Canillas
2015-07-11 6:36 ` Krzysztof Kozlowski
2015-07-15 9:58 ` Sylwester nawrocki
2015-07-09 15:43 ` [PATCH v2 5/7] ARM: dts: Exynos4x12: add CPU OPP and regulator supply property Bartlomiej Zolnierkiewicz
2015-07-10 8:35 ` Krzysztof Kozlowski
2015-07-09 15:43 ` [PATCH v2 6/7] ARM: Exynos: switch to using generic cpufreq driver for Exynos4x12 Bartlomiej Zolnierkiewicz
2015-07-10 8:55 ` Krzysztof Kozlowski
2015-07-09 15:43 ` [PATCH v2 7/7] cpufreq: exynos: remove Exynos4x12 specific cpufreq driver support Bartlomiej Zolnierkiewicz
2015-07-10 8:57 ` Krzysztof Kozlowski
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