cpufreq: exynos: Show list of available frequencies

Add freq_attr attribute to show list of available frequencies.

Signed-off-by: Donggeun Kim <dg77.kim@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: KyungMin Park <kyungmin.park@samsung.com>
Signed-off-by: Inderpal Singh <inderpal.singh@linaro.org>
Reviewed-by: Amit Daniel Kachhap<amit.daniel@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/cpufreq/exynos-cpufreq.c b/drivers/cpufreq/exynos-cpufreq.c
index 232208cf6c03..2183e9a24c2d 100644
--- a/drivers/cpufreq/exynos-cpufreq.c
+++ b/drivers/cpufreq/exynos-cpufreq.c
@@ -268,13 +268,26 @@ static int exynos_cpufreq_cpu_init(struct cpufreq_policy *policy)
         return cpufreq_frequency_table_cpuinfo(policy, exynos_info->freq_table);
 }
 
+static int exynos_cpufreq_cpu_exit(struct cpufreq_policy *policy)
+{
+        cpufreq_frequency_table_put_attr(policy->cpu);
+        return 0;
+}
+
+static struct freq_attr *exynos_cpufreq_attr[] = {
+        &cpufreq_freq_attr_scaling_available_freqs,
+        NULL,
+};
+
 static struct cpufreq_driver exynos_driver = {
         .flags          = CPUFREQ_STICKY,
         .verify         = exynos_verify_speed,
         .target         = exynos_target,
         .get            = exynos_getspeed,
         .init           = exynos_cpufreq_cpu_init,
+        .exit           = exynos_cpufreq_cpu_exit,
         .name           = "exynos_cpufreq",
+        .attr           = exynos_cpufreq_attr,
 #ifdef CONFIG_PM
         .suspend        = exynos_cpufreq_suspend,
         .resume         = exynos_cpufreq_resume,