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authorViresh Kumar <viresh.kumar@linaro.org>2014-11-27 03:37:51 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-11-30 01:38:38 +0300
commit7c45cf31b3ab9be270a7bf6af2926631dc566436 (patch)
tree9d43ede2da036ce026785ec268e454b38dc9ac6f /include/linux/cpufreq.h
parentd3a10c14755a5929eaf43cea760bc307ee7e96bc (diff)
downloadlinux-7c45cf31b3ab9be270a7bf6af2926631dc566436.tar.xz
cpufreq: Introduce ->ready() callback for cpufreq drivers
Currently there is no callback for cpufreq drivers which is called once the policy is ready to be used. There are some requirements where such a callback is required. One of them is registering a cooling device with the help of of_cpufreq_cooling_register(). This routine tries to get 'struct cpufreq_policy' for CPUs which isn't yet initialed at the time ->init() is called and so we face issues while registering the cooling device. Because we can't register cooling device from ->init(), we need a callback that is called after the policy is ready to be used and hence we introduce ->ready() callback. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Eduardo Valentin <edubezval@gmail.com> Tested-by: Eduardo Valentin <edubezval@gmail.com> Reviewed-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/cpufreq.h')
-rw-r--r--include/linux/cpufreq.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index db3c13085671..4d078cebafd2 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -267,6 +267,10 @@ struct cpufreq_driver {
void (*stop_cpu)(struct cpufreq_policy *policy);
int (*suspend)(struct cpufreq_policy *policy);
int (*resume)(struct cpufreq_policy *policy);
+
+ /* Will be called after the driver is fully initialized */
+ void (*ready)(struct cpufreq_policy *policy);
+
struct freq_attr **attr;
/* platform specific boost support code */