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authorJavi Merino <javi.merino@arm.com>2016-09-15 17:44:23 +0300
committerZhang Rui <rui.zhang@intel.com>2016-11-23 05:07:35 +0300
commit3aa5374376746f20a27be8682be7f91c8b71d1d8 (patch)
treeacf8f0716d84c5f1c5bc1960468e6d88f6d2c9e1 /drivers
parent1cea4e7776b7e9096b696eeb66364f51a8d321ec (diff)
downloadlinux-3aa5374376746f20a27be8682be7f91c8b71d1d8.tar.xz
devfreq_cooling: pass a pointer to devfreq in the power model callbacks
When the devfreq cooling device was designed, it was an oversight not to pass a pointer to the struct devfreq as the first parameters of the callbacks. The design patterns of the kernel suggest it for a good reason. By passing a pointer to struct devfreq, the driver can register one function that works with multiple devices. With the current implementation, a driver that can work with multiple devices has to create multiple copies of the same function with different parameters so that each devfreq_cooling_device can use the appropriate one. By passing a pointer to struct devfreq, the driver can identify which device it's referring to. Cc: Zhang Rui <rui.zhang@intel.com> Cc: Eduardo Valentin <edubezval@gmail.com> Reviewed-by: Punit Agrawal <punit.agrawal@arm.com> Reviewed-by: Ørjan Eide <orjan.eide@arm.com> Reviewed-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Javi Merino <javi.merino@arm.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/thermal/devfreq_cooling.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/thermal/devfreq_cooling.c b/drivers/thermal/devfreq_cooling.c
index 81631b110e17..5a737fd5f1aa 100644
--- a/drivers/thermal/devfreq_cooling.c
+++ b/drivers/thermal/devfreq_cooling.c
@@ -238,7 +238,7 @@ get_static_power(struct devfreq_cooling_device *dfc, unsigned long freq)
return 0;
}
- return dfc->power_ops->get_static_power(voltage);
+ return dfc->power_ops->get_static_power(df, voltage);
}
/**
@@ -262,7 +262,8 @@ get_dynamic_power(struct devfreq_cooling_device *dfc, unsigned long freq,
struct devfreq_cooling_power *dfc_power = dfc->power_ops;
if (dfc_power->get_dynamic_power)
- return dfc_power->get_dynamic_power(freq, voltage);
+ return dfc_power->get_dynamic_power(dfc->devfreq, freq,
+ voltage);
freq_mhz = freq / 1000000;
power = (u64)dfc_power->dyn_power_coeff * freq_mhz * voltage * voltage;