thermal: devfreq_cooling: refactor code and add get_voltage function
Move the code which gets the voltage for a given frequency. This code will be resused in few places. Acked-by: Javi Merino <javi.merino@kernel.org> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
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@ -164,27 +164,12 @@ freq_get_state(struct devfreq_cooling_device *dfc, unsigned long freq)
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return THERMAL_CSTATE_INVALID;
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}
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/**
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* get_static_power() - calculate the static power
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* @dfc: Pointer to devfreq cooling device
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* @freq: Frequency in Hz
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*
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* Calculate the static power in milliwatts using the supplied
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* get_static_power(). The current voltage is calculated using the
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* OPP library. If no get_static_power() was supplied, assume the
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* static power is negligible.
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*/
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static unsigned long
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get_static_power(struct devfreq_cooling_device *dfc, unsigned long freq)
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static unsigned long get_voltage(struct devfreq *df, unsigned long freq)
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{
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struct devfreq *df = dfc->devfreq;
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struct device *dev = df->dev.parent;
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unsigned long voltage;
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struct dev_pm_opp *opp;
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if (!dfc->power_ops->get_static_power)
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return 0;
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opp = dev_pm_opp_find_freq_exact(dev, freq, true);
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if (PTR_ERR(opp) == -ERANGE)
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opp = dev_pm_opp_find_freq_exact(dev, freq, false);
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@ -202,9 +187,35 @@ get_static_power(struct devfreq_cooling_device *dfc, unsigned long freq)
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dev_err_ratelimited(dev,
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"Failed to get voltage for frequency %lu\n",
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freq);
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return 0;
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}
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return voltage;
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}
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/**
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* get_static_power() - calculate the static power
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* @dfc: Pointer to devfreq cooling device
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* @freq: Frequency in Hz
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*
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* Calculate the static power in milliwatts using the supplied
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* get_static_power(). The current voltage is calculated using the
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* OPP library. If no get_static_power() was supplied, assume the
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* static power is negligible.
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*/
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static unsigned long
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get_static_power(struct devfreq_cooling_device *dfc, unsigned long freq)
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{
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struct devfreq *df = dfc->devfreq;
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unsigned long voltage;
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if (!dfc->power_ops->get_static_power)
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return 0;
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voltage = get_voltage(df, freq);
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if (voltage == 0)
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return 0;
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return dfc->power_ops->get_static_power(df, voltage);
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}
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