Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal into thermal-soc
This commit is contained in:
Zhang Rui
commit
c75960aa7a
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@ -10,6 +10,8 @@ to the silicon temperature.
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|||
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||||
Required properties:
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- compatible : Should be:
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||||
- "ti,omap34xx-bandgap" : for OMAP34xx bandgap
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- "ti,omap36xx-bandgap" : for OMAP36xx bandgap
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- "ti,omap4430-bandgap" : for OMAP4430 bandgap
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- "ti,omap4460-bandgap" : for OMAP4460 bandgap
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- "ti,omap4470-bandgap" : for OMAP4470 bandgap
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|
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@ -25,6 +27,18 @@ to each bandgap version, because the mapping may change from
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soc to soc, apart of depending on available features.
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Example:
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OMAP34xx:
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bandgap {
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reg = <0x48002524 0x4>;
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compatible = "ti,omap34xx-bandgap";
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};
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OMAP36xx:
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bandgap {
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reg = <0x48002524 0x4>;
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compatible = "ti,omap36xx-bandgap";
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};
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OMAP4430:
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bandgap {
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reg = <0x4a002260 0x4 0x4a00232C 0x4>;
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|
|
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@ -217,7 +217,7 @@ static struct device_opp *_find_device_opp(struct device *dev)
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}
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/**
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* dev_pm_opp_get_voltage() - Gets the voltage corresponding to an available opp
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* dev_pm_opp_get_voltage() - Gets the voltage corresponding to an opp
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* @opp: opp for which voltage has to be returned for
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*
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* Return: voltage in micro volt corresponding to the opp, else
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@ -239,7 +239,7 @@ unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
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opp_rcu_lockdep_assert();
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tmp_opp = rcu_dereference(opp);
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if (IS_ERR_OR_NULL(tmp_opp) || !tmp_opp->available)
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if (IS_ERR_OR_NULL(tmp_opp))
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pr_err("%s: Invalid parameters\n", __func__);
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else
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v = tmp_opp->u_volt;
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|
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@ -147,6 +147,20 @@ config CLOCK_THERMAL
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device that is configured to use this cooling mechanism will be
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controlled to reduce clock frequency whenever temperature is high.
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config DEVFREQ_THERMAL
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bool "Generic device cooling support"
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depends on PM_DEVFREQ
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depends on PM_OPP
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help
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This implements the generic devfreq cooling mechanism through
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frequency reduction for devices using devfreq.
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This will throttle the device by limiting the maximum allowed DVFS
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frequency corresponding to the cooling level.
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In order to use the power extensions of the cooling device,
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devfreq should use the simple_ondemand governor.
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If you want this support, you should say Y here.
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config THERMAL_EMULATION
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|
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@ -22,6 +22,9 @@ thermal_sys-$(CONFIG_CPU_THERMAL) += cpu_cooling.o
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# clock cooling
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thermal_sys-$(CONFIG_CLOCK_THERMAL) += clock_cooling.o
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# devfreq cooling
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thermal_sys-$(CONFIG_DEVFREQ_THERMAL) += devfreq_cooling.o
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# platform thermal drivers
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obj-$(CONFIG_QCOM_SPMI_TEMP_ALARM) += qcom-spmi-temp-alarm.o
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obj-$(CONFIG_SPEAR_THERMAL) += spear_thermal.o
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|
|
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@ -224,9 +224,9 @@ static const struct armada_thermal_data armada380_data = {
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.is_valid_shift = 10,
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.temp_shift = 0,
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.temp_mask = 0x3ff,
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.coef_b = 2931108200UL,
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.coef_m = 5000000UL,
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.coef_div = 10502,
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.coef_b = 1172499100UL,
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.coef_m = 2000096UL,
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.coef_div = 4201,
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.inverted = true,
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};
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|
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@ -0,0 +1,569 @@
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/*
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* devfreq_cooling: Thermal cooling device implementation for devices using
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* devfreq
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||||
*
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* Copyright (C) 2014-2015 ARM Limited
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*
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||||
* This program is free software; you can redistribute it and/or modify
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||||
* it under the terms of the GNU General Public License version 2 as
|
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* published by the Free Software Foundation.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
|
||||
* kind, whether express or implied; without even the implied warranty
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||||
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
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||||
*
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* TODO:
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* - If OPPs are added or removed after devfreq cooling has
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* registered, the devfreq cooling won't react to it.
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*/
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#include <linux/devfreq.h>
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#include <linux/devfreq_cooling.h>
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#include <linux/export.h>
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#include <linux/slab.h>
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#include <linux/pm_opp.h>
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#include <linux/thermal.h>
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#include <trace/events/thermal.h>
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static DEFINE_MUTEX(devfreq_lock);
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static DEFINE_IDR(devfreq_idr);
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/**
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* struct devfreq_cooling_device - Devfreq cooling device
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* @id: unique integer value corresponding to each
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* devfreq_cooling_device registered.
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* @cdev: Pointer to associated thermal cooling device.
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* @devfreq: Pointer to associated devfreq device.
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* @cooling_state: Current cooling state.
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* @power_table: Pointer to table with maximum power draw for each
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* cooling state. State is the index into the table, and
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* the power is in mW.
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* @freq_table: Pointer to a table with the frequencies sorted in descending
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||||
* order. You can index the table by cooling device state
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* @freq_table_size: Size of the @freq_table and @power_table
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* @power_ops: Pointer to devfreq_cooling_power, used to generate the
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* @power_table.
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*/
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struct devfreq_cooling_device {
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int id;
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struct thermal_cooling_device *cdev;
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struct devfreq *devfreq;
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unsigned long cooling_state;
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u32 *power_table;
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u32 *freq_table;
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size_t freq_table_size;
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struct devfreq_cooling_power *power_ops;
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};
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/**
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* get_idr - function to get a unique id.
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* @idr: struct idr * handle used to create a id.
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||||
* @id: int * value generated by this function.
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*
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* This function will populate @id with an unique
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* id, using the idr API.
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*
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||||
* Return: 0 on success, an error code on failure.
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*/
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static int get_idr(struct idr *idr, int *id)
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{
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int ret;
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mutex_lock(&devfreq_lock);
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ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL);
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mutex_unlock(&devfreq_lock);
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if (unlikely(ret < 0))
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return ret;
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*id = ret;
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return 0;
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}
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/**
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* release_idr - function to free the unique id.
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* @idr: struct idr * handle used for creating the id.
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* @id: int value representing the unique id.
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*/
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static void release_idr(struct idr *idr, int id)
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{
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mutex_lock(&devfreq_lock);
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idr_remove(idr, id);
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mutex_unlock(&devfreq_lock);
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||||
}
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/**
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* partition_enable_opps() - disable all opps above a given state
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* @dfc: Pointer to devfreq we are operating on
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* @cdev_state: cooling device state we're setting
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||||
*
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||||
* Go through the OPPs of the device, enabling all OPPs until
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* @cdev_state and disabling those frequencies above it.
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||||
*/
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static int partition_enable_opps(struct devfreq_cooling_device *dfc,
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unsigned long cdev_state)
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{
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int i;
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struct device *dev = dfc->devfreq->dev.parent;
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for (i = 0; i < dfc->freq_table_size; i++) {
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struct dev_pm_opp *opp;
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int ret = 0;
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unsigned int freq = dfc->freq_table[i];
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bool want_enable = i >= cdev_state ? true : false;
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rcu_read_lock();
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opp = dev_pm_opp_find_freq_exact(dev, freq, !want_enable);
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rcu_read_unlock();
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if (PTR_ERR(opp) == -ERANGE)
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continue;
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else if (IS_ERR(opp))
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return PTR_ERR(opp);
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if (want_enable)
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ret = dev_pm_opp_enable(dev, freq);
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else
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ret = dev_pm_opp_disable(dev, freq);
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|
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if (ret)
|
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return ret;
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}
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return 0;
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}
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static int devfreq_cooling_get_max_state(struct thermal_cooling_device *cdev,
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unsigned long *state)
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{
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struct devfreq_cooling_device *dfc = cdev->devdata;
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*state = dfc->freq_table_size - 1;
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return 0;
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}
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|
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static int devfreq_cooling_get_cur_state(struct thermal_cooling_device *cdev,
|
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unsigned long *state)
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{
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struct devfreq_cooling_device *dfc = cdev->devdata;
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*state = dfc->cooling_state;
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return 0;
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}
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|
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static int devfreq_cooling_set_cur_state(struct thermal_cooling_device *cdev,
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unsigned long state)
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{
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struct devfreq_cooling_device *dfc = cdev->devdata;
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struct devfreq *df = dfc->devfreq;
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struct device *dev = df->dev.parent;
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int ret;
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if (state == dfc->cooling_state)
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return 0;
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dev_dbg(dev, "Setting cooling state %lu\n", state);
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|
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if (state >= dfc->freq_table_size)
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return -EINVAL;
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ret = partition_enable_opps(dfc, state);
|
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if (ret)
|
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return ret;
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|
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dfc->cooling_state = state;
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|
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return 0;
|
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}
|
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|
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/**
|
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* freq_get_state() - get the cooling state corresponding to a frequency
|
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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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* Return: the cooling state associated with the @freq, or
|
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* THERMAL_CSTATE_INVALID if it wasn't found.
|
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*/
|
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static unsigned long
|
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freq_get_state(struct devfreq_cooling_device *dfc, unsigned long freq)
|
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{
|
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int i;
|
||||
|
||||
for (i = 0; i < dfc->freq_table_size; i++) {
|
||||
if (dfc->freq_table[i] == freq)
|
||||
return i;
|
||||
}
|
||||
|
||||
return THERMAL_CSTATE_INVALID;
|
||||
}
|
||||
|
||||
/**
|
||||
* get_static_power() - calculate the static power
|
||||
* @dfc: Pointer to devfreq cooling device
|
||||
* @freq: Frequency in Hz
|
||||
*
|
||||
* Calculate the static power in milliwatts using the supplied
|
||||
* get_static_power(). The current voltage is calculated using the
|
||||
* OPP library. If no get_static_power() was supplied, assume the
|
||||
* static power is negligible.
|
||||
*/
|
||||
static unsigned long
|
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get_static_power(struct devfreq_cooling_device *dfc, unsigned long freq)
|
||||
{
|
||||
struct devfreq *df = dfc->devfreq;
|
||||
struct device *dev = df->dev.parent;
|
||||
unsigned long voltage;
|
||||
struct dev_pm_opp *opp;
|
||||
|
||||
if (!dfc->power_ops->get_static_power)
|
||||
return 0;
|
||||
|
||||
rcu_read_lock();
|
||||
|
||||
opp = dev_pm_opp_find_freq_exact(dev, freq, true);
|
||||
if (IS_ERR(opp) && (PTR_ERR(opp) == -ERANGE))
|
||||
opp = dev_pm_opp_find_freq_exact(dev, freq, false);
|
||||
|
||||
voltage = dev_pm_opp_get_voltage(opp) / 1000; /* mV */
|
||||
|
||||
rcu_read_unlock();
|
||||
|
||||
if (voltage == 0) {
|
||||
dev_warn_ratelimited(dev,
|
||||
"Failed to get voltage for frequency %lu: %ld\n",
|
||||
freq, IS_ERR(opp) ? PTR_ERR(opp) : 0);
|
||||
return 0;
|
||||
}
|
||||
|
||||
return dfc->power_ops->get_static_power(voltage);
|
||||
}
|
||||
|
||||
/**
|
||||
* get_dynamic_power - calculate the dynamic power
|
||||
* @dfc: Pointer to devfreq cooling device
|
||||
* @freq: Frequency in Hz
|
||||
* @voltage: Voltage in millivolts
|
||||
*
|
||||
* Calculate the dynamic power in milliwatts consumed by the device at
|
||||
* frequency @freq and voltage @voltage. If the get_dynamic_power()
|
||||
* was supplied as part of the devfreq_cooling_power struct, then that
|
||||
* function is used. Otherwise, a simple power model (Pdyn = Coeff *
|
||||
* Voltage^2 * Frequency) is used.
|
||||
*/
|
||||
static unsigned long
|
||||
get_dynamic_power(struct devfreq_cooling_device *dfc, unsigned long freq,
|
||||
unsigned long voltage)
|
||||
{
|
||||
unsigned long power;
|
||||
u32 freq_mhz;
|
||||
struct devfreq_cooling_power *dfc_power = dfc->power_ops;
|
||||
|
||||
if (dfc_power->get_dynamic_power)
|
||||
return dfc_power->get_dynamic_power(freq, voltage);
|
||||
|
||||
freq_mhz = freq / 1000000;
|
||||
power = (u64)dfc_power->dyn_power_coeff * freq_mhz * voltage * voltage;
|
||||
do_div(power, 1000000000);
|
||||
|
||||
return power;
|
||||
}
|
||||
|
||||
static int devfreq_cooling_get_requested_power(struct thermal_cooling_device *cdev,
|
||||
struct thermal_zone_device *tz,
|
||||
u32 *power)
|
||||
{
|
||||
struct devfreq_cooling_device *dfc = cdev->devdata;
|
||||
struct devfreq *df = dfc->devfreq;
|
||||
struct devfreq_dev_status *status = &df->last_status;
|
||||
unsigned long state;
|
||||
unsigned long freq = status->current_frequency;
|
||||
u32 dyn_power, static_power;
|
||||
|
||||
/* Get dynamic power for state */
|
||||
state = freq_get_state(dfc, freq);
|
||||
if (state == THERMAL_CSTATE_INVALID)
|
||||
return -EAGAIN;
|
||||
|
||||
dyn_power = dfc->power_table[state];
|
||||
|
||||
/* Scale dynamic power for utilization */
|
||||
dyn_power = (dyn_power * status->busy_time) / status->total_time;
|
||||
|
||||
/* Get static power */
|
||||
static_power = get_static_power(dfc, freq);
|
||||
|
||||
trace_thermal_power_devfreq_get_power(cdev, status, freq, dyn_power,
|
||||
static_power);
|
||||
|
||||
*power = dyn_power + static_power;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int devfreq_cooling_state2power(struct thermal_cooling_device *cdev,
|
||||
struct thermal_zone_device *tz,
|
||||
unsigned long state,
|
||||
u32 *power)
|
||||
{
|
||||
struct devfreq_cooling_device *dfc = cdev->devdata;
|
||||
unsigned long freq;
|
||||
u32 static_power;
|
||||
|
||||
if (state < 0 || state >= dfc->freq_table_size)
|
||||
return -EINVAL;
|
||||
|
||||
freq = dfc->freq_table[state];
|
||||
static_power = get_static_power(dfc, freq);
|
||||
|
||||
*power = dfc->power_table[state] + static_power;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int devfreq_cooling_power2state(struct thermal_cooling_device *cdev,
|
||||
struct thermal_zone_device *tz,
|
||||
u32 power, unsigned long *state)
|
||||
{
|
||||
struct devfreq_cooling_device *dfc = cdev->devdata;
|
||||
struct devfreq *df = dfc->devfreq;
|
||||
struct devfreq_dev_status *status = &df->last_status;
|
||||
unsigned long freq = status->current_frequency;
|
||||
unsigned long busy_time;
|
||||
s32 dyn_power;
|
||||
u32 static_power;
|
||||
int i;
|
||||
|
||||
static_power = get_static_power(dfc, freq);
|
||||
|
||||
dyn_power = power - static_power;
|
||||
dyn_power = dyn_power > 0 ? dyn_power : 0;
|
||||
|
||||
/* Scale dynamic power for utilization */
|
||||
busy_time = status->busy_time ?: 1;
|
||||
dyn_power = (dyn_power * status->total_time) / busy_time;
|
||||
|
||||
/*
|
||||
* Find the first cooling state that is within the power
|
||||
* budget for dynamic power.
|
||||
*/
|
||||
for (i = 0; i < dfc->freq_table_size - 1; i++)
|
||||
if (dyn_power >= dfc->power_table[i])
|
||||
break;
|
||||
|
||||
*state = i;
|
||||
trace_thermal_power_devfreq_limit(cdev, freq, *state, power);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct thermal_cooling_device_ops devfreq_cooling_ops = {
|
||||
.get_max_state = devfreq_cooling_get_max_state,
|
||||
.get_cur_state = devfreq_cooling_get_cur_state,
|
||||
.set_cur_state = devfreq_cooling_set_cur_state,
|
||||
};
|
||||
|
||||
/**
|
||||
* devfreq_cooling_gen_tables() - Generate power and freq tables.
|
||||
* @dfc: Pointer to devfreq cooling device.
|
||||
*
|
||||
* Generate power and frequency tables: the power table hold the
|
||||
* device's maximum power usage at each cooling state (OPP). The
|
||||
* static and dynamic power using the appropriate voltage and
|
||||
* frequency for the state, is acquired from the struct
|
||||
* devfreq_cooling_power, and summed to make the maximum power draw.
|
||||
*
|
||||
* The frequency table holds the frequencies in descending order.
|
||||
* That way its indexed by cooling device state.
|
||||
*
|
||||
* The tables are malloced, and pointers put in dfc. They must be
|
||||
* freed when unregistering the devfreq cooling device.
|
||||
*
|
||||
* Return: 0 on success, negative error code on failure.
|
||||
*/
|
||||
static int devfreq_cooling_gen_tables(struct devfreq_cooling_device *dfc)
|
||||
{
|
||||
struct devfreq *df = dfc->devfreq;
|
||||
struct device *dev = df->dev.parent;
|
||||
int ret, num_opps;
|
||||
unsigned long freq;
|
||||
u32 *power_table = NULL;
|
||||
u32 *freq_table;
|
||||
int i;
|
||||
|
||||
num_opps = dev_pm_opp_get_opp_count(dev);
|
||||
|
||||
if (dfc->power_ops) {
|
||||
power_table = kcalloc(num_opps, sizeof(*power_table),
|
||||
GFP_KERNEL);
|
||||
if (!power_table)
|
||||
ret = -ENOMEM;
|
||||
}
|
||||
|
||||
freq_table = kcalloc(num_opps, sizeof(*freq_table),
|
||||
GFP_KERNEL);
|
||||
if (!freq_table) {
|
||||
ret = -ENOMEM;
|
||||
goto free_power_table;
|
||||
}
|
||||
|
||||
for (i = 0, freq = ULONG_MAX; i < num_opps; i++, freq--) {
|
||||
unsigned long power_dyn, voltage;
|
||||
struct dev_pm_opp *opp;
|
||||
|
||||
rcu_read_lock();
|
||||
|
||||
opp = dev_pm_opp_find_freq_floor(dev, &freq);
|
||||
if (IS_ERR(opp)) {
|
||||
rcu_read_unlock();
|
||||
ret = PTR_ERR(opp);
|
||||
goto free_tables;
|
||||
}
|
||||
|
||||
voltage = dev_pm_opp_get_voltage(opp) / 1000; /* mV */
|
||||
|
||||
rcu_read_unlock();
|
||||
|
||||
if (dfc->power_ops) {
|
||||
power_dyn = get_dynamic_power(dfc, freq, voltage);
|
||||
|
||||
dev_dbg(dev, "Dynamic power table: %lu MHz @ %lu mV: %lu = %lu mW\n",
|
||||
freq / 1000000, voltage, power_dyn, power_dyn);
|
||||
|
||||
power_table[i] = power_dyn;
|
||||
}
|
||||
|
||||
freq_table[i] = freq;
|
||||
}
|
||||
|
||||
if (dfc->power_ops)
|
||||
dfc->power_table = power_table;
|
||||
|
||||
dfc->freq_table = freq_table;
|
||||
dfc->freq_table_size = num_opps;
|
||||
|
||||
return 0;
|
||||
|
||||
free_tables:
|
||||
kfree(freq_table);
|
||||
free_power_table:
|
||||
kfree(power_table);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* of_devfreq_cooling_register_power() - Register devfreq cooling device,
|
||||
* with OF and power information.
|
||||
* @np: Pointer to OF device_node.
|
||||
* @df: Pointer to devfreq device.
|
||||
* @dfc_power: Pointer to devfreq_cooling_power.
|
||||
*
|
||||
* Register a devfreq cooling device. The available OPPs must be
|
||||
* registered on the device.
|
||||
*
|
||||
* If @dfc_power is provided, the cooling device is registered with the
|
||||
* power extensions. For the power extensions to work correctly,
|
||||
* devfreq should use the simple_ondemand governor, other governors
|
||||
* are not currently supported.
|
||||
*/
|
||||
struct devfreq_cooling_device *
|
||||
of_devfreq_cooling_register_power(struct device_node *np, struct devfreq *df,
|
||||
struct devfreq_cooling_power *dfc_power)
|
||||
{
|
||||
struct thermal_cooling_device *cdev;
|
||||
struct devfreq_cooling_device *dfc;
|
||||
char dev_name[THERMAL_NAME_LENGTH];
|
||||
int err;
|
||||
|
||||
dfc = kzalloc(sizeof(*dfc), GFP_KERNEL);
|
||||
if (!dfc)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
dfc->devfreq = df;
|
||||
|
||||
if (dfc_power) {
|
||||
dfc->power_ops = dfc_power;
|
||||
|
||||
devfreq_cooling_ops.get_requested_power =
|
||||
devfreq_cooling_get_requested_power;
|
||||
devfreq_cooling_ops.state2power = devfreq_cooling_state2power;
|
||||
devfreq_cooling_ops.power2state = devfreq_cooling_power2state;
|
||||
}
|
||||
|
||||
err = devfreq_cooling_gen_tables(dfc);
|
||||
if (err)
|
||||
goto free_dfc;
|
||||
|
||||
err = get_idr(&devfreq_idr, &dfc->id);
|
||||
if (err)
|
||||
goto free_tables;
|
||||
|
||||
snprintf(dev_name, sizeof(dev_name), "thermal-devfreq-%d", dfc->id);
|
||||
|
||||
cdev = thermal_of_cooling_device_register(np, dev_name, dfc,
|
||||
&devfreq_cooling_ops);
|
||||
if (IS_ERR(cdev)) {
|
||||
err = PTR_ERR(cdev);
|
||||
dev_err(df->dev.parent,
|
||||
"Failed to register devfreq cooling device (%d)\n",
|
||||
err);
|
||||
goto release_idr;
|
||||
}
|
||||
|
||||
dfc->cdev = cdev;
|
||||
|
||||
return dfc;
|
||||
|
||||
release_idr:
|
||||
release_idr(&devfreq_idr, dfc->id);
|
||||
free_tables:
|
||||
kfree(dfc->power_table);
|
||||
kfree(dfc->freq_table);
|
||||
free_dfc:
|
||||
kfree(dfc);
|
||||
|
||||
return ERR_PTR(err);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(of_devfreq_cooling_register_power);
|
||||
|
||||
/**
|
||||
* of_devfreq_cooling_register() - Register devfreq cooling device,
|
||||
* with OF information.
|
||||
* @np: Pointer to OF device_node.
|
||||
* @df: Pointer to devfreq device.
|
||||
*/
|
||||
struct devfreq_cooling_device *
|
||||
of_devfreq_cooling_register(struct device_node *np, struct devfreq *df)
|
||||
{
|
||||
return of_devfreq_cooling_register_power(np, df, NULL);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(of_devfreq_cooling_register);
|
||||
|
||||
/**
|
||||
* devfreq_cooling_register() - Register devfreq cooling device.
|
||||
* @df: Pointer to devfreq device.
|
||||
*/
|
||||
struct devfreq_cooling_device *devfreq_cooling_register(struct devfreq *df)
|
||||
{
|
||||
return of_devfreq_cooling_register(NULL, df);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(devfreq_cooling_register);
|
||||
|
||||
/**
|
||||
* devfreq_cooling_unregister() - Unregister devfreq cooling device.
|
||||
* @dfc: Pointer to devfreq cooling device to unregister.
|
||||
*/
|
||||
void devfreq_cooling_unregister(struct devfreq_cooling_device *dfc)
|
||||
{
|
||||
if (!dfc)
|
||||
return;
|
||||
|
||||
thermal_cooling_device_unregister(dfc->cdev);
|
||||
release_idr(&devfreq_idr, dfc->id);
|
||||
kfree(dfc->power_table);
|
||||
kfree(dfc->freq_table);
|
||||
|
||||
kfree(dfc);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(devfreq_cooling_unregister);
|
||||
|
|
@ -288,7 +288,7 @@ static int imx_set_trip_temp(struct thermal_zone_device *tz, int trip,
|
|||
if (trip == IMX_TRIP_CRITICAL)
|
||||
return -EPERM;
|
||||
|
||||
if (temp > IMX_TEMP_PASSIVE)
|
||||
if (temp < 0 || temp > IMX_TEMP_PASSIVE)
|
||||
return -EINVAL;
|
||||
|
||||
data->temp_passive = temp;
|
||||
|
|
@ -487,14 +487,6 @@ static int imx_thermal_probe(struct platform_device *pdev)
|
|||
if (data->irq < 0)
|
||||
return data->irq;
|
||||
|
||||
ret = devm_request_threaded_irq(&pdev->dev, data->irq,
|
||||
imx_thermal_alarm_irq, imx_thermal_alarm_irq_thread,
|
||||
0, "imx_thermal", data);
|
||||
if (ret < 0) {
|
||||
dev_err(&pdev->dev, "failed to request alarm irq: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
platform_set_drvdata(pdev, data);
|
||||
|
||||
ret = imx_get_sensor_data(pdev);
|
||||
|
|
@ -571,6 +563,17 @@ static int imx_thermal_probe(struct platform_device *pdev)
|
|||
regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN);
|
||||
regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP);
|
||||
|
||||
ret = devm_request_threaded_irq(&pdev->dev, data->irq,
|
||||
imx_thermal_alarm_irq, imx_thermal_alarm_irq_thread,
|
||||
0, "imx_thermal", data);
|
||||
if (ret < 0) {
|
||||
dev_err(&pdev->dev, "failed to request alarm irq: %d\n", ret);
|
||||
clk_disable_unprepare(data->thermal_clk);
|
||||
thermal_zone_device_unregister(data->tz);
|
||||
cpufreq_cooling_unregister(data->cdev);
|
||||
return ret;
|
||||
}
|
||||
|
||||
data->irq_enabled = true;
|
||||
data->mode = THERMAL_DEVICE_ENABLED;
|
||||
|
||||
|
|
|
|||
|
|
@ -106,16 +106,14 @@ struct rockchip_thermal_data {
|
|||
#define TSADCV2_AUTO_PERIOD_HT 0x6c
|
||||
|
||||
#define TSADCV2_AUTO_EN BIT(0)
|
||||
#define TSADCV2_AUTO_DISABLE ~BIT(0)
|
||||
#define TSADCV2_AUTO_SRC_EN(chn) BIT(4 + (chn))
|
||||
#define TSADCV2_AUTO_TSHUT_POLARITY_HIGH BIT(8)
|
||||
#define TSADCV2_AUTO_TSHUT_POLARITY_LOW ~BIT(8)
|
||||
|
||||
#define TSADCV2_INT_SRC_EN(chn) BIT(chn)
|
||||
#define TSADCV2_SHUT_2GPIO_SRC_EN(chn) BIT(4 + (chn))
|
||||
#define TSADCV2_SHUT_2CRU_SRC_EN(chn) BIT(8 + (chn))
|
||||
|
||||
#define TSADCV2_INT_PD_CLEAR ~BIT(8)
|
||||
#define TSADCV2_INT_PD_CLEAR_MASK ~BIT(8)
|
||||
|
||||
#define TSADCV2_DATA_MASK 0xfff
|
||||
#define TSADCV2_HIGHT_INT_DEBOUNCE_COUNT 4
|
||||
|
|
@ -124,7 +122,7 @@ struct rockchip_thermal_data {
|
|||
#define TSADCV2_AUTO_PERIOD_HT_TIME 50 /* msec */
|
||||
|
||||
struct tsadc_table {
|
||||
unsigned long code;
|
||||
u32 code;
|
||||
long temp;
|
||||
};
|
||||
|
||||
|
|
@ -164,7 +162,6 @@ static const struct tsadc_table v2_code_table[] = {
|
|||
{3452, 115000},
|
||||
{3437, 120000},
|
||||
{3421, 125000},
|
||||
{0, 125000},
|
||||
};
|
||||
|
||||
static u32 rk_tsadcv2_temp_to_code(long temp)
|
||||
|
|
@ -191,19 +188,21 @@ static u32 rk_tsadcv2_temp_to_code(long temp)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int rk_tsadcv2_code_to_temp(u32 code)
|
||||
static int rk_tsadcv2_code_to_temp(u32 code, int *temp)
|
||||
{
|
||||
unsigned int low = 0;
|
||||
unsigned int low = 1;
|
||||
unsigned int high = ARRAY_SIZE(v2_code_table) - 1;
|
||||
unsigned int mid = (low + high) / 2;
|
||||
unsigned int num;
|
||||
unsigned long denom;
|
||||
|
||||
/* Invalid code, return -EAGAIN */
|
||||
if (code > TSADCV2_DATA_MASK)
|
||||
return -EAGAIN;
|
||||
BUILD_BUG_ON(ARRAY_SIZE(v2_code_table) < 2);
|
||||
|
||||
while (low <= high && mid) {
|
||||
code &= TSADCV2_DATA_MASK;
|
||||
if (code < v2_code_table[high].code)
|
||||
return -EAGAIN; /* Incorrect reading */
|
||||
|
||||
while (low <= high) {
|
||||
if (code >= v2_code_table[mid].code &&
|
||||
code < v2_code_table[mid - 1].code)
|
||||
break;
|
||||
|
|
@ -223,7 +222,9 @@ static int rk_tsadcv2_code_to_temp(u32 code)
|
|||
num = v2_code_table[mid].temp - v2_code_table[mid - 1].temp;
|
||||
num *= v2_code_table[mid - 1].code - code;
|
||||
denom = v2_code_table[mid - 1].code - v2_code_table[mid].code;
|
||||
return v2_code_table[mid - 1].temp + (num / denom);
|
||||
*temp = v2_code_table[mid - 1].temp + (num / denom);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -241,10 +242,10 @@ static void rk_tsadcv2_initialize(void __iomem *regs,
|
|||
enum tshut_polarity tshut_polarity)
|
||||
{
|
||||
if (tshut_polarity == TSHUT_HIGH_ACTIVE)
|
||||
writel_relaxed(0 | (TSADCV2_AUTO_TSHUT_POLARITY_HIGH),
|
||||
writel_relaxed(0U | TSADCV2_AUTO_TSHUT_POLARITY_HIGH,
|
||||
regs + TSADCV2_AUTO_CON);
|
||||
else
|
||||
writel_relaxed(0 | (TSADCV2_AUTO_TSHUT_POLARITY_LOW),
|
||||
writel_relaxed(0U & ~TSADCV2_AUTO_TSHUT_POLARITY_HIGH,
|
||||
regs + TSADCV2_AUTO_CON);
|
||||
|
||||
writel_relaxed(TSADCV2_AUTO_PERIOD_TIME, regs + TSADCV2_AUTO_PERIOD);
|
||||
|
|
@ -261,7 +262,7 @@ static void rk_tsadcv2_irq_ack(void __iomem *regs)
|
|||
u32 val;
|
||||
|
||||
val = readl_relaxed(regs + TSADCV2_INT_PD);
|
||||
writel_relaxed(val & TSADCV2_INT_PD_CLEAR, regs + TSADCV2_INT_PD);
|
||||
writel_relaxed(val & TSADCV2_INT_PD_CLEAR_MASK, regs + TSADCV2_INT_PD);
|
||||
}
|
||||
|
||||
static void rk_tsadcv2_control(void __iomem *regs, bool enable)
|
||||
|
|
@ -281,14 +282,9 @@ static int rk_tsadcv2_get_temp(int chn, void __iomem *regs, int *temp)
|
|||
{
|
||||
u32 val;
|
||||
|
||||
/* the A/D value of the channel last conversion need some time */
|
||||
val = readl_relaxed(regs + TSADCV2_DATA(chn));
|
||||
if (val == 0)
|
||||
return -EAGAIN;
|
||||
|
||||
*temp = rk_tsadcv2_code_to_temp(val);
|
||||
|
||||
return 0;
|
||||
return rk_tsadcv2_code_to_temp(val, temp);
|
||||
}
|
||||
|
||||
static void rk_tsadcv2_tshut_temp(int chn, void __iomem *regs, long temp)
|
||||
|
|
|
|||
|
|
@ -19,6 +19,21 @@ config TI_THERMAL
|
|||
This includes trip points definitions, extrapolation rules and
|
||||
CPU cooling device bindings.
|
||||
|
||||
config OMAP3_THERMAL
|
||||
bool "Texas Instruments OMAP3 thermal support"
|
||||
depends on TI_SOC_THERMAL
|
||||
depends on ARCH_OMAP3 || COMPILE_TEST
|
||||
help
|
||||
If you say yes here you get thermal support for the Texas Instruments
|
||||
OMAP3 SoC family. The current chips supported are:
|
||||
- OMAP3430
|
||||
|
||||
OMAP3 chips normally don't need thermal management, and sensors in
|
||||
this generation are not accurate, nor they are very close to
|
||||
the important hotspots.
|
||||
|
||||
Say 'N' here.
|
||||
|
||||
config OMAP4_THERMAL
|
||||
bool "Texas Instruments OMAP4 thermal support"
|
||||
depends on TI_SOC_THERMAL
|
||||
|
|
|
|||
|
|
@ -2,5 +2,6 @@ obj-$(CONFIG_TI_SOC_THERMAL) += ti-soc-thermal.o
|
|||
ti-soc-thermal-y := ti-bandgap.o
|
||||
ti-soc-thermal-$(CONFIG_TI_THERMAL) += ti-thermal-common.o
|
||||
ti-soc-thermal-$(CONFIG_DRA752_THERMAL) += dra752-thermal-data.o
|
||||
ti-soc-thermal-$(CONFIG_OMAP3_THERMAL) += omap3-thermal-data.o
|
||||
ti-soc-thermal-$(CONFIG_OMAP4_THERMAL) += omap4-thermal-data.o
|
||||
ti-soc-thermal-$(CONFIG_OMAP5_THERMAL) += omap5-thermal-data.o
|
||||
|
|
|
|||
|
|
@ -0,0 +1,176 @@
|
|||
/*
|
||||
* OMAP3 thermal driver.
|
||||
*
|
||||
* Copyright (C) 2011-2012 Texas Instruments Inc.
|
||||
* Copyright (C) 2014 Pavel Machek <pavel@ucw.cz>
|
||||
*
|
||||
* This software is licensed under the terms of the GNU General Public
|
||||
* License version 2, as published by the Free Software Foundation, and
|
||||
* may be copied, distributed, and modified under those terms.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* Note
|
||||
* http://www.ti.com/lit/er/sprz278f/sprz278f.pdf "Advisory
|
||||
* 3.1.1.186 MMC OCP Clock Not Gated When Thermal Sensor Is Used"
|
||||
*
|
||||
* Also TI says:
|
||||
* Just be careful when you try to make thermal policy like decisions
|
||||
* based on this sensor. Placement of the sensor w.r.t the actual logic
|
||||
* generating heat has to be a factor as well. If you are just looking
|
||||
* for an approximation temperature (thermometerish kind), you might be
|
||||
* ok with this. I am not sure we'd find any TI data around this.. just a
|
||||
* heads up.
|
||||
*/
|
||||
|
||||
#include "ti-thermal.h"
|
||||
#include "ti-bandgap.h"
|
||||
|
||||
/*
|
||||
* OMAP34XX has one instance of thermal sensor for MPU
|
||||
* need to describe the individual bit fields
|
||||
*/
|
||||
static struct temp_sensor_registers
|
||||
omap34xx_mpu_temp_sensor_registers = {
|
||||
.temp_sensor_ctrl = 0,
|
||||
.bgap_soc_mask = BIT(8),
|
||||
.bgap_eocz_mask = BIT(7),
|
||||
.bgap_dtemp_mask = 0x7f,
|
||||
|
||||
.bgap_mode_ctrl = 0,
|
||||
.mode_ctrl_mask = BIT(9),
|
||||
};
|
||||
|
||||
/* Thresholds and limits for OMAP34XX MPU temperature sensor */
|
||||
static struct temp_sensor_data omap34xx_mpu_temp_sensor_data = {
|
||||
.min_freq = 32768,
|
||||
.max_freq = 32768,
|
||||
.max_temp = 125000,
|
||||
.min_temp = -40000,
|
||||
.hyst_val = 5000,
|
||||
};
|
||||
|
||||
/*
|
||||
* Temperature values in milli degree celsius
|
||||
*/
|
||||
static const int
|
||||
omap34xx_adc_to_temp[128] = {
|
||||
-40000, -40000, -40000, -40000, -40000, -39000, -38000, -36000,
|
||||
-34000, -32000, -31000, -29000, -28000, -26000, -25000, -24000,
|
||||
-22000, -21000, -19000, -18000, -17000, -15000, -14000, -12000,
|
||||
-11000, -9000, -8000, -7000, -5000, -4000, -2000, -1000, 0000,
|
||||
1000, 3000, 4000, 5000, 7000, 8000, 10000, 11000, 13000, 14000,
|
||||
15000, 17000, 18000, 20000, 21000, 22000, 24000, 25000, 27000,
|
||||
28000, 30000, 31000, 32000, 34000, 35000, 37000, 38000, 39000,
|
||||
41000, 42000, 44000, 45000, 47000, 48000, 49000, 51000, 52000,
|
||||
53000, 55000, 56000, 58000, 59000, 60000, 62000, 63000, 65000,
|
||||
66000, 67000, 69000, 70000, 72000, 73000, 74000, 76000, 77000,
|
||||
79000, 80000, 81000, 83000, 84000, 85000, 87000, 88000, 89000,
|
||||
91000, 92000, 94000, 95000, 96000, 98000, 99000, 100000,
|
||||
102000, 103000, 105000, 106000, 107000, 109000, 110000, 111000,
|
||||
113000, 114000, 116000, 117000, 118000, 120000, 121000, 122000,
|
||||
124000, 124000, 125000, 125000, 125000, 125000, 125000
|
||||
};
|
||||
|
||||
/* OMAP34XX data */
|
||||
const struct ti_bandgap_data omap34xx_data = {
|
||||
.features = TI_BANDGAP_FEATURE_CLK_CTRL | TI_BANDGAP_FEATURE_UNRELIABLE,
|
||||
.fclock_name = "ts_fck",
|
||||
.div_ck_name = "ts_fck",
|
||||
.conv_table = omap34xx_adc_to_temp,
|
||||
.adc_start_val = 0,
|
||||
.adc_end_val = 127,
|
||||
.expose_sensor = ti_thermal_expose_sensor,
|
||||
.remove_sensor = ti_thermal_remove_sensor,
|
||||
|
||||
.sensors = {
|
||||
{
|
||||
.registers = &omap34xx_mpu_temp_sensor_registers,
|
||||
.ts_data = &omap34xx_mpu_temp_sensor_data,
|
||||
.domain = "cpu",
|
||||
.slope = 0,
|
||||
.constant = 20000,
|
||||
.slope_pcb = 0,
|
||||
.constant_pcb = 20000,
|
||||
.register_cooling = NULL,
|
||||
.unregister_cooling = NULL,
|
||||
},
|
||||
},
|
||||
.sensor_count = 1,
|
||||
};
|
||||
|
||||
/*
|
||||
* OMAP36XX has one instance of thermal sensor for MPU
|
||||
* need to describe the individual bit fields
|
||||
*/
|
||||
static struct temp_sensor_registers
|
||||
omap36xx_mpu_temp_sensor_registers = {
|
||||
.temp_sensor_ctrl = 0,
|
||||
.bgap_soc_mask = BIT(9),
|
||||
.bgap_eocz_mask = BIT(8),
|
||||
.bgap_dtemp_mask = 0xFF,
|
||||
|
||||
.bgap_mode_ctrl = 0,
|
||||
.mode_ctrl_mask = BIT(10),
|
||||
};
|
||||
|
||||
/* Thresholds and limits for OMAP36XX MPU temperature sensor */
|
||||
static struct temp_sensor_data omap36xx_mpu_temp_sensor_data = {
|
||||
.min_freq = 32768,
|
||||
.max_freq = 32768,
|
||||
.max_temp = 125000,
|
||||
.min_temp = -40000,
|
||||
.hyst_val = 5000,
|
||||
};
|
||||
|
||||
/*
|
||||
* Temperature values in milli degree celsius
|
||||
*/
|
||||
static const int
|
||||
omap36xx_adc_to_temp[128] = {
|
||||
-40000, -40000, -40000, -40000, -40000, -40000, -40000, -40000,
|
||||
-40000, -40000, -40000, -40000, -40000, -38000, -35000, -34000,
|
||||
-32000, -30000, -28000, -26000, -24000, -22000, -20000, -18500,
|
||||
-17000, -15000, -13500, -12000, -10000, -8000, -6500, -5000, -3500,
|
||||
-1500, 0, 2000, 3500, 5000, 6500, 8500, 10000, 12000, 13500,
|
||||
15000, 17000, 19000, 21000, 23000, 25000, 27000, 28500, 30000,
|
||||
32000, 33500, 35000, 37000, 38500, 40000, 42000, 43500, 45000,
|
||||
47000, 48500, 50000, 52000, 53500, 55000, 57000, 58500, 60000,
|
||||
62000, 64000, 66000, 68000, 70000, 71500, 73500, 75000, 77000,
|
||||
78500, 80000, 82000, 83500, 85000, 87000, 88500, 90000, 92000,
|
||||
93500, 95000, 97000, 98500, 100000, 102000, 103500, 105000, 107000,
|
||||
109000, 111000, 113000, 115000, 117000, 118500, 120000, 122000,
|
||||
123500, 125000, 125000, 125000, 125000, 125000, 125000, 125000,
|
||||
125000, 125000, 125000, 125000, 125000, 125000, 125000, 125000,
|
||||
125000, 125000, 125000, 125000, 125000, 125000, 125000
|
||||
};
|
||||
|
||||
/* OMAP36XX data */
|
||||
const struct ti_bandgap_data omap36xx_data = {
|
||||
.features = TI_BANDGAP_FEATURE_CLK_CTRL | TI_BANDGAP_FEATURE_UNRELIABLE,
|
||||
.fclock_name = "ts_fck",
|
||||
.div_ck_name = "ts_fck",
|
||||
.conv_table = omap36xx_adc_to_temp,
|
||||
.adc_start_val = 0,
|
||||
.adc_end_val = 127,
|
||||
.expose_sensor = ti_thermal_expose_sensor,
|
||||
.remove_sensor = ti_thermal_remove_sensor,
|
||||
|
||||
.sensors = {
|
||||
{
|
||||
.registers = &omap36xx_mpu_temp_sensor_registers,
|
||||
.ts_data = &omap36xx_mpu_temp_sensor_data,
|
||||
.domain = "cpu",
|
||||
.slope = 0,
|
||||
.constant = 20000,
|
||||
.slope_pcb = 0,
|
||||
.constant_pcb = 20000,
|
||||
.register_cooling = NULL,
|
||||
.unregister_cooling = NULL,
|
||||
},
|
||||
},
|
||||
.sensor_count = 1,
|
||||
};
|
||||
|
|
@ -1274,6 +1274,10 @@ int ti_bandgap_probe(struct platform_device *pdev)
|
|||
}
|
||||
bgp->dev = &pdev->dev;
|
||||
|
||||
if (TI_BANDGAP_HAS(bgp, UNRELIABLE))
|
||||
dev_warn(&pdev->dev,
|
||||
"This OMAP thermal sensor is unreliable. You've been warned\n");
|
||||
|
||||
if (TI_BANDGAP_HAS(bgp, TSHUT)) {
|
||||
ret = ti_bandgap_tshut_init(bgp, pdev);
|
||||
if (ret) {
|
||||
|
|
@ -1579,6 +1583,16 @@ static SIMPLE_DEV_PM_OPS(ti_bandgap_dev_pm_ops, ti_bandgap_suspend,
|
|||
#endif
|
||||
|
||||
static const struct of_device_id of_ti_bandgap_match[] = {
|
||||
#ifdef CONFIG_OMAP3_THERMAL
|
||||
{
|
||||
.compatible = "ti,omap34xx-bandgap",
|
||||
.data = (void *)&omap34xx_data,
|
||||
},
|
||||
{
|
||||
.compatible = "ti,omap36xx-bandgap",
|
||||
.data = (void *)&omap36xx_data,
|
||||
},
|
||||
#endif
|
||||
#ifdef CONFIG_OMAP4_THERMAL
|
||||
{
|
||||
.compatible = "ti,omap4430-bandgap",
|
||||
|
|
|
|||
|
|
@ -322,6 +322,8 @@ struct ti_temp_sensor {
|
|||
* has Errata 814
|
||||
* TI_BANDGAP_FEATURE_ERRATA_813 - used to workaorund when the bandgap device
|
||||
* has Errata 813
|
||||
* TI_BANDGAP_FEATURE_UNRELIABLE - used when the sensor readings are too
|
||||
* inaccurate.
|
||||
* TI_BANDGAP_HAS(b, f) - macro to check if a bandgap device is capable of a
|
||||
* specific feature (above) or not. Return non-zero, if yes.
|
||||
*/
|
||||
|
|
@ -337,6 +339,7 @@ struct ti_temp_sensor {
|
|||
#define TI_BANDGAP_FEATURE_HISTORY_BUFFER BIT(9)
|
||||
#define TI_BANDGAP_FEATURE_ERRATA_814 BIT(10)
|
||||
#define TI_BANDGAP_FEATURE_ERRATA_813 BIT(11)
|
||||
#define TI_BANDGAP_FEATURE_UNRELIABLE BIT(12)
|
||||
#define TI_BANDGAP_HAS(b, f) \
|
||||
((b)->conf->features & TI_BANDGAP_FEATURE_ ## f)
|
||||
|
||||
|
|
@ -390,6 +393,14 @@ int ti_bandgap_set_sensor_data(struct ti_bandgap *bgp, int id, void *data);
|
|||
void *ti_bandgap_get_sensor_data(struct ti_bandgap *bgp, int id);
|
||||
int ti_bandgap_get_trend(struct ti_bandgap *bgp, int id, int *trend);
|
||||
|
||||
#ifdef CONFIG_OMAP3_THERMAL
|
||||
extern const struct ti_bandgap_data omap34xx_data;
|
||||
extern const struct ti_bandgap_data omap36xx_data;
|
||||
#else
|
||||
#define omap34xx_data NULL
|
||||
#define omap36xx_data NULL
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_OMAP4_THERMAL
|
||||
extern const struct ti_bandgap_data omap4430_data;
|
||||
extern const struct ti_bandgap_data omap4460_data;
|
||||
|
|
|
|||
|
|
@ -0,0 +1,81 @@
|
|||
/*
|
||||
* devfreq_cooling: Thermal cooling device implementation for devices using
|
||||
* devfreq
|
||||
*
|
||||
* Copyright (C) 2014-2015 ARM Limited
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2 as
|
||||
* published by the Free Software Foundation.
|
||||
*
|
||||
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
|
||||
* kind, whether express or implied; without even the implied warranty
|
||||
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#ifndef __DEVFREQ_COOLING_H__
|
||||
#define __DEVFREQ_COOLING_H__
|
||||
|
||||
#include <linux/devfreq.h>
|
||||
#include <linux/thermal.h>
|
||||
|
||||
#ifdef CONFIG_DEVFREQ_THERMAL
|
||||
|
||||
/**
|
||||
* struct devfreq_cooling_power - Devfreq cooling power ops
|
||||
* @get_static_power: Take voltage, in mV, and return the static power
|
||||
* in mW. If NULL, the static power is assumed
|
||||
* to be 0.
|
||||
* @get_dynamic_power: Take voltage, in mV, and frequency, in HZ, and
|
||||
* return the dynamic power draw in mW. If NULL,
|
||||
* a simple power model is used.
|
||||
* @dyn_power_coeff: Coefficient for the simple dynamic power model in
|
||||
* mW/(MHz mV mV).
|
||||
* If get_dynamic_power() is NULL, then the
|
||||
* dynamic power is calculated as
|
||||
* @dyn_power_coeff * frequency * voltage^2
|
||||
*/
|
||||
struct devfreq_cooling_power {
|
||||
unsigned long (*get_static_power)(unsigned long voltage);
|
||||
unsigned long (*get_dynamic_power)(unsigned long freq,
|
||||
unsigned long voltage);
|
||||
unsigned long dyn_power_coeff;
|
||||
};
|
||||
|
||||
struct devfreq_cooling_device *
|
||||
of_devfreq_cooling_register_power(struct device_node *np, struct devfreq *df,
|
||||
struct devfreq_cooling_power *dfc_power);
|
||||
struct devfreq_cooling_device *
|
||||
of_devfreq_cooling_register(struct device_node *np, struct devfreq *df);
|
||||
struct devfreq_cooling_device *devfreq_cooling_register(struct devfreq *df);
|
||||
void devfreq_cooling_unregister(struct devfreq_cooling_device *dfc);
|
||||
|
||||
#else /* !CONFIG_DEVFREQ_THERMAL */
|
||||
|
||||
struct devfreq_cooling_device *
|
||||
of_devfreq_cooling_register_power(struct device_node *np, struct devfreq *df,
|
||||
struct devfreq_cooling_power *dfc_power)
|
||||
{
|
||||
return ERR_PTR(-EINVAL);
|
||||
}
|
||||
|
||||
static inline struct devfreq_cooling_device *
|
||||
of_devfreq_cooling_register(struct device_node *np, struct devfreq *df)
|
||||
{
|
||||
return ERR_PTR(-EINVAL);
|
||||
}
|
||||
|
||||
static inline struct devfreq_cooling_device *
|
||||
devfreq_cooling_register(struct devfreq *df)
|
||||
{
|
||||
return ERR_PTR(-EINVAL);
|
||||
}
|
||||
|
||||
static inline void
|
||||
devfreq_cooling_unregister(struct devfreq_cooling_device *dfc)
|
||||
{
|
||||
}
|
||||
|
||||
#endif /* CONFIG_DEVFREQ_THERMAL */
|
||||
#endif /* __DEVFREQ_COOLING_H__ */
|
||||
|
|
@ -4,6 +4,7 @@
|
|||
#if !defined(_TRACE_THERMAL_H) || defined(TRACE_HEADER_MULTI_READ)
|
||||
#define _TRACE_THERMAL_H
|
||||
|
||||
#include <linux/devfreq.h>
|
||||
#include <linux/thermal.h>
|
||||
#include <linux/tracepoint.h>
|
||||
|
||||
|
|
@ -135,6 +136,58 @@ TRACE_EVENT(thermal_power_cpu_limit,
|
|||
__entry->power)
|
||||
);
|
||||
|
||||
TRACE_EVENT(thermal_power_devfreq_get_power,
|
||||
TP_PROTO(struct thermal_cooling_device *cdev,
|
||||
struct devfreq_dev_status *status, unsigned long freq,
|
||||
u32 dynamic_power, u32 static_power),
|
||||
|
||||
TP_ARGS(cdev, status, freq, dynamic_power, static_power),
|
||||
|
||||
TP_STRUCT__entry(
|
||||
__string(type, cdev->type )
|
||||
__field(unsigned long, freq )
|
||||
__field(u32, load )
|
||||
__field(u32, dynamic_power )
|
||||
__field(u32, static_power )
|
||||
),
|
||||
|
||||
TP_fast_assign(
|
||||
__assign_str(type, cdev->type);
|
||||
__entry->freq = freq;
|
||||
__entry->load = (100 * status->busy_time) / status->total_time;
|
||||
__entry->dynamic_power = dynamic_power;
|
||||
__entry->static_power = static_power;
|
||||
),
|
||||
|
||||
TP_printk("type=%s freq=%lu load=%u dynamic_power=%u static_power=%u",
|
||||
__get_str(type), __entry->freq,
|
||||
__entry->load, __entry->dynamic_power, __entry->static_power)
|
||||
);
|
||||
|
||||
TRACE_EVENT(thermal_power_devfreq_limit,
|
||||
TP_PROTO(struct thermal_cooling_device *cdev, unsigned long freq,
|
||||
unsigned long cdev_state, u32 power),
|
||||
|
||||
TP_ARGS(cdev, freq, cdev_state, power),
|
||||
|
||||
TP_STRUCT__entry(
|
||||
__string(type, cdev->type)
|
||||
__field(unsigned int, freq )
|
||||
__field(unsigned long, cdev_state)
|
||||
__field(u32, power )
|
||||
),
|
||||
|
||||
TP_fast_assign(
|
||||
__assign_str(type, cdev->type);
|
||||
__entry->freq = freq;
|
||||
__entry->cdev_state = cdev_state;
|
||||
__entry->power = power;
|
||||
),
|
||||
|
||||
TP_printk("type=%s freq=%u cdev_state=%lu power=%u",
|
||||
__get_str(type), __entry->freq, __entry->cdev_state,
|
||||
__entry->power)
|
||||
);
|
||||
#endif /* _TRACE_THERMAL_H */
|
||||
|
||||
/* This part must be outside protection */
|
||||
|
|
|
|||
Loading…
Reference in New Issue