From 7e39ecf14203eb592e0c1d208b12304371781780 Mon Sep 17 00:00:00 2001
From: sergei Trofimov <sergei.trofimov@arm.com>
Date: Mon, 30 Apr 2018 15:40:15 +0100
Subject: [PATCH] cpufreq: add missing get_driver() method
Add a method to read the name of the driver for cpufreq policy for a
cpu.
---
devlib/module/cpufreq.py | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/devlib/module/cpufreq.py b/devlib/module/cpufreq.py
index 5071e1b..d72b7c4 100644
--- a/devlib/module/cpufreq.py
+++ b/devlib/module/cpufreq.py
@@ -442,6 +442,18 @@ class CpufreqModule(Module):
return [int(c) for c in self.target.read_value(sysfile).split()]
+ @memoized
+ def get_driver(self, cpu):
+ """
+ Get the name of the driver used by this cpufreq policy.
+ """
+ if isinstance(cpu, int):
+ cpu = 'cpu{}'.format(cpu)
+
+ sysfile = '/sys/devices/system/cpu/{}/cpufreq/scaling_driver'.format(cpu)
+
+ return self.target.read_value(sysfile).strip()
+
def iter_domains(self):
"""
Iterate over the frequency domains in the system