linux-kernel - [PATCH v8 5/7] cpufreq:exynos:Extend Exynos cpufreq driver to support boost framework

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Date:	Mon, 26 Aug 2013 17:50:41 +0200
From:	Lukasz Majewski <l.majewski@...sung.com>
To:	Viresh Kumar <viresh.kumar@...aro.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>, Zhang Rui <rui.zhang@...el.com>,
	Eduardo Valentin <eduardo.valentin@...com>
Cc:	"cpufreq@...r.kernel.org" <cpufreq@...r.kernel.org>,
	Linux PM list <linux-pm@...r.kernel.org>,
	Jonghwa Lee <jonghwa3.lee@...sung.com>,
	Lukasz Majewski <l.majewski@...sung.com>,
	Lukasz Majewski <l.majewski@...ess.pl>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Myungjoo Ham <myungjoo.ham@...sung.com>, durgadoss.r@...el.com
Subject: [PATCH v8 5/7] cpufreq:exynos:Extend Exynos cpufreq driver to support
 boost framework

The cpufreq_driver's boost_supported flag is true only when boost
support is explicitly enabled. Boost related attributes are exported only
under the same condition.

Signed-off-by: Lukasz Majewski <l.majewski@...sung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@...sung.com>
Acked-by: Viresh Kumar <viresh.kumar@...aro.org>

---
Changes for v8:
- None

Changes for v7:
- Replace CONFIG_CPU_FREQ_BOOST_SW with CONFIG_ARM_EXYNOS_CPU_FREQ_BOOST_SW
- Move boost_supported initialization to struct cpufreq_driver exynos_driver

Changes for v6:
- Replace exynos_driver.boost_supported = 1 to = true
- Protect boost attributes export with CONFIG_CPU_FREQ_BOOST_SW

Changes for v5:
- None

Changes for v4:
- None

Changes for v3:
- Remove low level boost code
- Move boost management code to cpufreq core code
- Use boost_supported flag to indicate if driver supports over clocking

Changes for v2:
- Removal of struct cpufreq_boost
- Removal of the CONFIG_CPU_FREQ_BOOST flag
- low_level_boost with valid address when boost is supported

 drivers/cpufreq/exynos-cpufreq.c |    6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/cpufreq/exynos-cpufreq.c b/drivers/cpufreq/exynos-cpufreq.c
index b9f9aee..2786aba 100644
--- a/drivers/cpufreq/exynos-cpufreq.c
+++ b/drivers/cpufreq/exynos-cpufreq.c
@@ -270,6 +270,9 @@ static int exynos_cpufreq_cpu_exit(struct cpufreq_policy *policy)
 
 static struct freq_attr *exynos_cpufreq_attr[] = {
 	&cpufreq_freq_attr_scaling_available_freqs,
+#ifdef CONFIG_ARM_EXYNOS_CPU_FREQ_BOOST_SW
+	&cpufreq_freq_attr_scaling_boost_freqs,
+#endif
 	NULL,
 };
 
@@ -282,6 +285,9 @@ static struct cpufreq_driver exynos_driver = {
 	.exit		= exynos_cpufreq_cpu_exit,
 	.name		= "exynos_cpufreq",
 	.attr		= exynos_cpufreq_attr,
+#ifdef CONFIG_ARM_EXYNOS_CPU_FREQ_BOOST_SW
+	.boost_supported = true,
+#endif
 #ifdef CONFIG_PM
 	.suspend	= exynos_cpufreq_suspend,
 	.resume		= exynos_cpufreq_resume,
-- 
1.7.10.4

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