From: Donggeun Kim <dg77.kim@samsung.com>
Date: Tue, 19 Jul 2011 05:41:57 +0000 (+0900)
Subject: [CPUFREQ] exynos4210: Show list of available frequencies
X-Git-Tag: firefly_0821_release~3680^2~4215^2~7
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=5beae3b9b6f5479998310a849f73aa32a637dd3b;p=firefly-linux-kernel-4.4.55.git

[CPUFREQ] exynos4210: Show list of available frequencies

This patch enables 'scaling_available_frequencies' attribute
showing 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: Dave Jones <davej@redhat.com>
---

diff --git a/drivers/cpufreq/exynos4210-cpufreq.c b/drivers/cpufreq/exynos4210-cpufreq.c
index b7c3a84c4cfa..6f887573ce94 100644
--- a/drivers/cpufreq/exynos4210-cpufreq.c
+++ b/drivers/cpufreq/exynos4210-cpufreq.c
@@ -464,6 +464,8 @@ static int exynos4_cpufreq_resume(struct cpufreq_policy *policy)
 
 static int exynos4_cpufreq_cpu_init(struct cpufreq_policy *policy)
 {
+	int ret;
+
 	policy->cur = policy->min = policy->max = exynos4_getspeed(policy->cpu);
 
 	cpufreq_frequency_table_get_attr(exynos4_freq_table, policy->cpu);
@@ -479,16 +481,35 @@ static int exynos4_cpufreq_cpu_init(struct cpufreq_policy *policy)
 	 */
 	cpumask_setall(policy->cpus);
 
-	return cpufreq_frequency_table_cpuinfo(policy, exynos4_freq_table);
+	ret = cpufreq_frequency_table_cpuinfo(policy, exynos4_freq_table);
+	if (ret)
+		return ret;
+
+	cpufreq_frequency_table_get_attr(exynos4_freq_table, policy->cpu);
+
+	return 0;
 }
 
+static int exynos4_cpufreq_cpu_exit(struct cpufreq_policy *policy)
+{
+	cpufreq_frequency_table_put_attr(policy->cpu);
+	return 0;
+}
+
+static struct freq_attr *exynos4_cpufreq_attr[] = {
+	&cpufreq_freq_attr_scaling_available_freqs,
+	NULL,
+};
+
 static struct cpufreq_driver exynos4_driver = {
 	.flags		= CPUFREQ_STICKY,
 	.verify		= exynos4_verify_speed,
 	.target		= exynos4_target,
 	.get		= exynos4_getspeed,
 	.init		= exynos4_cpufreq_cpu_init,
+	.exit		= exynos4_cpufreq_cpu_exit,
 	.name		= "exynos4_cpufreq",
+	.attr		= exynos4_cpufreq_attr,
 #ifdef CONFIG_PM
 	.suspend	= exynos4_cpufreq_suspend,
 	.resume		= exynos4_cpufreq_resume,