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authorJesse Barnes <jbarnes@virtuousgeek.org>2011-06-28 10:59:12 -0700
committerKeith Packard <keithp@keithp.com>2011-06-28 13:54:26 -0700
commit3d73710880afa3d61cf57b5d4eb192e812eb7e4f (patch)
tree14659273e31e976706151c98beb565eafc4be694 /drivers/cpufreq
parent6ae77e6b6ae20c280df8ca78e9c9d9a8ccfe7a98 (diff)
downloadlinux-3d73710880afa3d61cf57b5d4eb192e812eb7e4f.tar.bz2
cpufreq: expose a cpufreq_quick_get_max routine
This allows drivers and other code to get the max reported CPU frequency. Initial use is for scaling ring frequency with GPU frequency in the i915 driver. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'drivers/cpufreq')
-rw-r--r--drivers/cpufreq/cpufreq.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 0a5bea9e3585..987a165ede26 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1199,6 +1199,26 @@ unsigned int cpufreq_quick_get(unsigned int cpu)
}
EXPORT_SYMBOL(cpufreq_quick_get);
+/**
+ * cpufreq_quick_get_max - get the max reported CPU frequency for this CPU
+ * @cpu: CPU number
+ *
+ * Just return the max possible frequency for a given CPU.
+ */
+unsigned int cpufreq_quick_get_max(unsigned int cpu)
+{
+ struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
+ unsigned int ret_freq = 0;
+
+ if (policy) {
+ ret_freq = policy->max;
+ cpufreq_cpu_put(policy);
+ }
+
+ return ret_freq;
+}
+EXPORT_SYMBOL(cpufreq_quick_get_max);
+
static unsigned int __cpufreq_get(unsigned int cpu)
{