[PATCH v4 4/7] cpufreq:exynos:Extend Exynos cpufreq driver to support boost framework

Lukasz Majewski
2013-06-19T17:12:45Z

The struct cpufreq_driver has been extended to embrace the information
related to boost support.

When "boost_mode" device tree attribute is defined for a platform, the
boost_supported flag is set. Moreover boost related attributes were
exported.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>

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 | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/cpufreq/exynos-cpufreq.c b/drivers/cpufreq/exynos-cpufreq.c
index 3197d88..b0e424e 100644
--- a/drivers/cpufreq/exynos-cpufreq.c
+++ b/drivers/cpufreq/exynos-cpufreq.c
@@ -264,6 +264,7 @@ static int exynos_cpufreq_cpu_exit(struct cpufreq_policy *policy)

static struct freq_attr *exynos_cpufreq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
+ &cpufreq_freq_attr_scaling_boost_freqs,
NULL,
};

@@ -359,6 +360,7 @@ static struct of_device_id exynos_cpufreq_of_match[] __initconst = {

static int __init exynos_cpufreq_probe(struct platform_device *pdev)
{
+ struct device_node *node = pdev->dev.of_node;
int ret = -EINVAL;

exynos_info = kzalloc(sizeof(struct exynos_dvfs_info), GFP_KERNEL);
@@ -391,6 +393,8 @@ static int __init exynos_cpufreq_probe(struct platform_device *pdev)
}

locking_frequency = exynos_getspeed(0);
+ if (of_property_read_bool(node, "boost_mode"))
+ exynos_driver.boost_supported = 1;

register_pm_notifier(&exynos_cpufreq_nb);

--
1.7.10.4