diff options
| author | Javi Merino <javi.merino@arm.com> | 2016-09-15 17:44:23 +0300 |
|---|---|---|
| committer | Zhang Rui <rui.zhang@intel.com> | 2016-11-23 05:07:35 +0300 |
| commit | 3aa5374376746f20a27be8682be7f91c8b71d1d8 (patch) | |
| tree | acf8f0716d84c5f1c5bc1960468e6d88f6d2c9e1 /drivers | |
| parent | 1cea4e7776b7e9096b696eeb66364f51a8d321ec (diff) | |
| download | linux-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.c | 5 |
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; |