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Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux

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Pull thermal management updates from Zhang Rui:

 - Fix a problem where orderly_shutdown() is called for multiple times
   due to multiple critical overheating events raised in a short period
   by platform thermal driver. (Keerthy)

 - Introduce a backup thermal shutdown mechanism, which invokes
   kernel_power_off()/emergency_restart() directly, after
   orderly_shutdown() being issued for certain amount of time(specified
   via Kconfig). This is useful in certain conditions that userspace may
   be unable to power off the system in a clean manner and leaves the
   system in a critical state, like in the middle of driver probing
   phase. (Keerthy)

 - Introduce a new interface in thermal devfreq_cooling code so that the
   driver can provide more precise data regarding actual power to the
   thermal governor every time the power budget is calculated. (Lukasz
   Luba)

 - Introduce BCM 2835 soc thermal driver and northstar thermal driver,
   within a new sub-folder. (Rafał Miłecki)

 - Introduce DA9062/61 thermal driver. (Steve Twiss)

 - Remove non-DT booting on TI-SoC driver. Also add support to fetching
   coefficients from DT. (Keerthy)

 - Refactorf RCAR Gen3 thermal driver. (Niklas Söderlund)

 - Small fix on MTK and intel-soc-dts thermal driver. (Dawei Chien,
   Brian Bian)

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (25 commits)
  thermal: core: Add a back up thermal shutdown mechanism
  thermal: core: Allow orderly_poweroff to be called only once
  Thermal: Intel SoC DTS: Change interrupt request behavior
  trace: thermal: add another parameter 'power' to the tracing function
  thermal: devfreq_cooling: add new interface for direct power read
  thermal: devfreq_cooling: refactor code and add get_voltage function
  thermal: mt8173: minor mtk_thermal.c cleanups
  thermal: bcm2835: move to the broadcom subdirectory
  thermal: broadcom: ns: specify myself as MODULE_AUTHOR
  thermal: da9062/61: Thermal junction temperature monitoring driver
  Documentation: devicetree: thermal: da9062/61 TJUNC temperature binding
  thermal: broadcom: add Northstar thermal driver
  dt-bindings: thermal: add support for Broadcom's Northstar thermal
  thermal: bcm2835: add thermal driver for bcm2835 SoC
  dt-bindings: Add thermal zone to bcm2835-thermal example
  thermal: rcar_gen3_thermal: add suspend and resume support
  thermal: rcar_gen3_thermal: store device match data in private structure
  thermal: rcar_gen3_thermal: enable hardware interrupts for trip points
  thermal: rcar_gen3_thermal: record and check number of TSCs found
  thermal: rcar_gen3_thermal: check that TSC exists before memory allocation
  ...
This commit is contained in:
Linus Torvalds 2017-05-12 11:58:45 -07:00
commit 6a776e47a0
25 changed files with 1305 additions and 266 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
Documentation/devicetree/bindings/thermal/brcm,bcm2835-thermal.txt
View File

@ -3,15 +3,39 @@ Binding for Thermal Sensor driver for BCM2835 SoCs.
Required parameters:
-------------------
compatible: should be one of: "brcm,bcm2835-thermal",
"brcm,bcm2836-thermal" or "brcm,bcm2837-thermal"
reg: Address range of the thermal registers.
clocks: Phandle of the clock used by the thermal sensor.
compatible: should be one of: "brcm,bcm2835-thermal",
"brcm,bcm2836-thermal" or "brcm,bcm2837-thermal"
reg: Address range of the thermal registers.
clocks: Phandle of the clock used by the thermal sensor.
#thermal-sensor-cells: should be 0 (see thermal.txt)
Example:
thermal-zones {
cpu_thermal: cpu-thermal {
polling-delay-passive = <0>;
polling-delay = <1000>;
thermal-sensors = <&thermal>;
trips {
cpu-crit {
temperature = <80000>;
hysteresis = <0>;
type = "critical";
};
};
coefficients = <(-538) 407000>;
cooling-maps {
};
};
};
thermal: thermal@7e212000 {
compatible = "brcm,bcm2835-thermal";
reg = <0x7e212000 0x8>;
clocks = <&clocks BCM2835_CLOCK_TSENS>;
#thermal-sensor-cells = <0>;
};

37
Documentation/devicetree/bindings/thermal/brcm,ns-thermal Normal file
View File

@ -0,0 +1,37 @@
* Broadcom Northstar Thermal
This binding describes thermal sensor that is part of Northstar's DMU (Device
Management Unit).
Required properties:
- compatible : Must be "brcm,ns-thermal"
- reg : iomem address range of PVTMON registers
- #thermal-sensor-cells : Should be <0>
Example:
thermal: thermal@1800c2c0 {
compatible = "brcm,ns-thermal";
reg = <0x1800c2c0 0x10>;
#thermal-sensor-cells = <0>;
};
thermal-zones {
cpu_thermal: cpu-thermal {
polling-delay-passive = <0>;
polling-delay = <1000>;
coefficients = <(-556) 418000>;
thermal-sensors = <&thermal>;
trips {
cpu-crit {
temperature = <125000>;
hysteresis = <0>;
type = "critical";
};
};
cooling-maps {
};
};
};

36
Documentation/devicetree/bindings/thermal/da9062-thermal.txt Normal file
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@ -0,0 +1,36 @@
* Dialog DA9062/61 TJUNC Thermal Module
This module is part of the DA9061/DA9062. For more details about entire
DA9062 and DA9061 chips see Documentation/devicetree/bindings/mfd/da9062.txt
Junction temperature thermal module uses an interrupt signal to identify
high THERMAL_TRIP_HOT temperatures for the PMIC device.
Required properties:
- compatible: should be one of the following valid compatible string lines:
"dlg,da9061-thermal", "dlg,da9062-thermal"
"dlg,da9062-thermal"
Optional properties:
- polling-delay-passive : Specify the polling period, measured in
milliseconds, between thermal zone device update checks.
Example: DA9062
pmic0: da9062@58 {
thermal {
compatible = "dlg,da9062-thermal";
polling-delay-passive = <3000>;
};
};
Example: DA9061 using a fall-back compatible for the DA9062 onkey driver
pmic0: da9061@58 {
thermal {
compatible = "dlg,da9061-thermal", "dlg,da9062-thermal";
polling-delay-passive = <3000>;
};
};

21
Documentation/thermal/sysfs-api.txt
View File

@ -582,3 +582,24 @@ platform data is provided, this uses the step_wise throttling policy.
This function serves as an arbitrator to set the state of a cooling
device. It sets the cooling device to the deepest cooling state if
possible.
6. thermal_emergency_poweroff:
On an event of critical trip temperature crossing. Thermal framework
allows the system to shutdown gracefully by calling orderly_poweroff().
In the event of a failure of orderly_poweroff() to shut down the system
we are in danger of keeping the system alive at undesirably high
temperatures. To mitigate this high risk scenario we program a work
queue to fire after a pre-determined number of seconds to start
an emergency shutdown of the device using the kernel_power_off()
function. In case kernel_power_off() fails then finally
emergency_restart() is called in the worst case.
The delay should be carefully profiled so as to give adequate time for
orderly_poweroff(). In case of failure of an orderly_poweroff() the
emergency poweroff kicks in after the delay has elapsed and shuts down
the system.
If set to 0 emergency poweroff will not be supported. So a carefully
profiled non-zero positive value is a must for emergerncy poweroff to be
triggered.

32
drivers/thermal/Kconfig
View File

@ -15,6 +15,23 @@ menuconfig THERMAL
if THERMAL
config THERMAL_EMERGENCY_POWEROFF_DELAY_MS
int "Emergency poweroff delay in milli-seconds"
depends on THERMAL
default 0
help
Thermal subsystem will issue a graceful shutdown when
critical temperatures are reached using orderly_poweroff(). In
case of failure of an orderly_poweroff(), the thermal emergency
poweroff kicks in after a delay has elapsed and shuts down the system.
This config is number of milliseconds to delay before emergency
poweroff kicks in. Similarly to the critical trip point,
the delay should be carefully profiled so as to give adequate
time for orderly_poweroff() to finish on regular execution.
If set to 0 emergency poweroff will not be supported.
In doubt, leave as 0.
config THERMAL_HWMON
bool
prompt "Expose thermal sensors as hwmon device"
@ -291,6 +308,16 @@ config ARMADA_THERMAL
Enable this option if you want to have support for thermal management
controller present in Armada 370 and Armada XP SoC.
config DA9062_THERMAL
tristate "DA9062/DA9061 Dialog Semiconductor thermal driver"
depends on MFD_DA9062 || COMPILE_TEST
depends on OF
help
Enable this for the Dialog Semiconductor thermal sensor driver.
This will report PMIC junction over-temperature for one thermal trip
zone.
Compatible with the DA9062 and DA9061 PMICs.
config INTEL_POWERCLAMP
tristate "Intel PowerClamp idle injection driver"
depends on THERMAL
@ -380,6 +407,11 @@ config MTK_THERMAL
Enable this option if you want to have support for thermal management
controller present in Mediatek SoCs
menu "Broadcom thermal drivers"
depends on ARCH_BCM || COMPILE_TEST
source "drivers/thermal/broadcom/Kconfig"
endmenu
menu "Texas Instruments thermal drivers"
depends on ARCH_HAS_BANDGAP || COMPILE_TEST
depends on HAS_IOMEM

2
drivers/thermal/Makefile
View File

@ -27,6 +27,7 @@ thermal_sys-$(CONFIG_CLOCK_THERMAL) += clock_cooling.o
thermal_sys-$(CONFIG_DEVFREQ_THERMAL) += devfreq_cooling.o
# platform thermal drivers
obj-y += broadcom/
obj-$(CONFIG_QCOM_SPMI_TEMP_ALARM) += qcom-spmi-temp-alarm.o
obj-$(CONFIG_SPEAR_THERMAL) += spear_thermal.o
obj-$(CONFIG_ROCKCHIP_THERMAL) += rockchip_thermal.o
@ -41,6 +42,7 @@ obj-$(CONFIG_TANGO_THERMAL) += tango_thermal.o
obj-$(CONFIG_IMX_THERMAL) += imx_thermal.o
obj-$(CONFIG_MAX77620_THERMAL) += max77620_thermal.o
obj-$(CONFIG_QORIQ_THERMAL) += qoriq_thermal.o
obj-$(CONFIG_DA9062_THERMAL) += da9062-thermal.o
obj-$(CONFIG_INTEL_POWERCLAMP) += intel_powerclamp.o
obj-$(CONFIG_X86_PKG_TEMP_THERMAL) += x86_pkg_temp_thermal.o
obj-$(CONFIG_INTEL_SOC_DTS_IOSF_CORE) += intel_soc_dts_iosf.o

16
drivers/thermal/broadcom/Kconfig Normal file
View File

@ -0,0 +1,16 @@
config BCM2835_THERMAL
tristate "Thermal sensors on bcm2835 SoC"
depends on ARCH_BCM2835 || COMPILE_TEST
depends on HAS_IOMEM
depends on THERMAL_OF
help
Support for thermal sensors on Broadcom bcm2835 SoCs.
config BCM_NS_THERMAL
tristate "Northstar thermal driver"
depends on ARCH_BCM_IPROC || COMPILE_TEST
help
Northstar is a family of SoCs that includes e.g. BCM4708, BCM47081,
BCM4709 and BCM47094. It contains DMU (Device Management Unit) block
with a thermal sensor that allows checking CPU temperature. This
driver provides support for it.

2
drivers/thermal/broadcom/Makefile Normal file
View File

@ -0,0 +1,2 @@
obj-$(CONFIG_BCM2835_THERMAL) += bcm2835_thermal.o
obj-$(CONFIG_BCM_NS_THERMAL) += ns-thermal.o

314
drivers/thermal/broadcom/bcm2835_thermal.c Normal file
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@ -0,0 +1,314 @@
/*
* Driver for Broadcom BCM2835 SoC temperature sensor
*
* Copyright (C) 2016 Martin Sperl
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*/
#include <linux/clk.h>
#include <linux/debugfs.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/thermal.h>
#define BCM2835_TS_TSENSCTL 0x00
#define BCM2835_TS_TSENSSTAT 0x04
#define BCM2835_TS_TSENSCTL_PRWDW BIT(0)
#define BCM2835_TS_TSENSCTL_RSTB BIT(1)
/*
* bandgap reference voltage in 6 mV increments
* 000b = 1178 mV, 001b = 1184 mV, ... 111b = 1220 mV
*/
#define BCM2835_TS_TSENSCTL_CTRL_BITS 3
#define BCM2835_TS_TSENSCTL_CTRL_SHIFT 2
#define BCM2835_TS_TSENSCTL_CTRL_MASK \
GENMASK(BCM2835_TS_TSENSCTL_CTRL_BITS + \
BCM2835_TS_TSENSCTL_CTRL_SHIFT - 1, \
BCM2835_TS_TSENSCTL_CTRL_SHIFT)
#define BCM2835_TS_TSENSCTL_CTRL_DEFAULT 1
#define BCM2835_TS_TSENSCTL_EN_INT BIT(5)
#define BCM2835_TS_TSENSCTL_DIRECT BIT(6)
#define BCM2835_TS_TSENSCTL_CLR_INT BIT(7)
#define BCM2835_TS_TSENSCTL_THOLD_SHIFT 8
#define BCM2835_TS_TSENSCTL_THOLD_BITS 10
#define BCM2835_TS_TSENSCTL_THOLD_MASK \
GENMASK(BCM2835_TS_TSENSCTL_THOLD_BITS + \
BCM2835_TS_TSENSCTL_THOLD_SHIFT - 1, \
BCM2835_TS_TSENSCTL_THOLD_SHIFT)
/*
* time how long the block to be asserted in reset
* which based on a clock counter (TSENS clock assumed)
*/
#define BCM2835_TS_TSENSCTL_RSTDELAY_SHIFT 18
#define BCM2835_TS_TSENSCTL_RSTDELAY_BITS 8
#define BCM2835_TS_TSENSCTL_REGULEN BIT(26)
#define BCM2835_TS_TSENSSTAT_DATA_BITS 10
#define BCM2835_TS_TSENSSTAT_DATA_SHIFT 0
#define BCM2835_TS_TSENSSTAT_DATA_MASK \
GENMASK(BCM2835_TS_TSENSSTAT_DATA_BITS + \
BCM2835_TS_TSENSSTAT_DATA_SHIFT - 1, \
BCM2835_TS_TSENSSTAT_DATA_SHIFT)
#define BCM2835_TS_TSENSSTAT_VALID BIT(10)
#define BCM2835_TS_TSENSSTAT_INTERRUPT BIT(11)
struct bcm2835_thermal_data {
struct thermal_zone_device *tz;
void __iomem *regs;
struct clk *clk;
struct dentry *debugfsdir;
};
static int bcm2835_thermal_adc2temp(u32 adc, int offset, int slope)
{
return offset + slope * adc;
}
static int bcm2835_thermal_temp2adc(int temp, int offset, int slope)
{
temp -= offset;
temp /= slope;
if (temp < 0)
temp = 0;
if (temp >= BIT(BCM2835_TS_TSENSSTAT_DATA_BITS))
temp = BIT(BCM2835_TS_TSENSSTAT_DATA_BITS) - 1;
return temp;
}
static int bcm2835_thermal_get_temp(void *d, int *temp)
{
struct bcm2835_thermal_data *data = d;
u32 val = readl(data->regs + BCM2835_TS_TSENSSTAT);
if (!(val & BCM2835_TS_TSENSSTAT_VALID))
return -EIO;
val &= BCM2835_TS_TSENSSTAT_DATA_MASK;
*temp = bcm2835_thermal_adc2temp(
val,
thermal_zone_get_offset(data->tz),
thermal_zone_get_slope(data->tz));
return 0;
}
static const struct debugfs_reg32 bcm2835_thermal_regs[] = {
{
.name = "ctl",
.offset = 0
},
{
.name = "stat",
.offset = 4
}
};
static void bcm2835_thermal_debugfs(struct platform_device *pdev)
{
struct thermal_zone_device *tz = platform_get_drvdata(pdev);
struct bcm2835_thermal_data *data = tz->devdata;
struct debugfs_regset32 *regset;
data->debugfsdir = debugfs_create_dir("bcm2835_thermal", NULL);
if (!data->debugfsdir)
return;
regset = devm_kzalloc(&pdev->dev, sizeof(*regset), GFP_KERNEL);
if (!regset)
return;
regset->regs = bcm2835_thermal_regs;
regset->nregs = ARRAY_SIZE(bcm2835_thermal_regs);
regset->base = data->regs;
debugfs_create_regset32("regset", 0444, data->debugfsdir, regset);
}
static struct thermal_zone_of_device_ops bcm2835_thermal_ops = {
.get_temp = bcm2835_thermal_get_temp,
};
/*
* Note: as per Raspberry Foundation FAQ
* (https://www.raspberrypi.org/help/faqs/#performanceOperatingTemperature)
* the recommended temperature range for the SoC -40C to +85C
* so the trip limit is set to 80C.
* this applies to all the BCM283X SoC
*/
static const struct of_device_id bcm2835_thermal_of_match_table[] = {
{
.compatible = "brcm,bcm2835-thermal",
},
{
.compatible = "brcm,bcm2836-thermal",
},
{
.compatible = "brcm,bcm2837-thermal",
},
{},
};
MODULE_DEVICE_TABLE(of, bcm2835_thermal_of_match_table);
static int bcm2835_thermal_probe(struct platform_device *pdev)
{
const struct of_device_id *match;
struct thermal_zone_device *tz;
struct bcm2835_thermal_data *data;
struct resource *res;
int err = 0;
u32 val;
unsigned long rate;
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
match = of_match_device(bcm2835_thermal_of_match_table,
&pdev->dev);
if (!match)
return -EINVAL;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
data->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(data->regs)) {
err = PTR_ERR(data->regs);
dev_err(&pdev->dev, "Could not get registers: %d\n", err);
return err;
}
data->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(data->clk)) {
err = PTR_ERR(data->clk);
if (err != -EPROBE_DEFER)
dev_err(&pdev->dev, "Could not get clk: %d\n", err);
return err;
}
err = clk_prepare_enable(data->clk);
if (err)
return err;
rate = clk_get_rate(data->clk);
if ((rate < 1920000) || (rate > 5000000))
dev_warn(&pdev->dev,
"Clock %pCn running at %pCr Hz is outside of the recommended range: 1.92 to 5MHz\n",
data->clk, data->clk);
/* register of thermal sensor and get info from DT */
tz = thermal_zone_of_sensor_register(&pdev->dev, 0, data,
&bcm2835_thermal_ops);
if (IS_ERR(tz)) {
err = PTR_ERR(tz);
dev_err(&pdev->dev,
"Failed to register the thermal device: %d\n",
err);
goto err_clk;
}
/*
* right now the FW does set up the HW-block, so we are not
* touching the configuration registers.
* But if the HW is not enabled, then set it up
* using "sane" values used by the firmware right now.
*/
val = readl(data->regs + BCM2835_TS_TSENSCTL);
if (!(val & BCM2835_TS_TSENSCTL_RSTB)) {
int trip_temp, offset, slope;
slope = thermal_zone_get_slope(tz);
offset = thermal_zone_get_offset(tz);
/*
* For now we deal only with critical, otherwise
* would need to iterate
*/
err = tz->ops->get_trip_temp(tz, 0, &trip_temp);
if (err < 0) {
err = PTR_ERR(tz);
dev_err(&pdev->dev,
"Not able to read trip_temp: %d\n",
err);
goto err_tz;
}
/* set bandgap reference voltage and enable voltage regulator */
val = (BCM2835_TS_TSENSCTL_CTRL_DEFAULT <<
BCM2835_TS_TSENSCTL_CTRL_SHIFT) |
BCM2835_TS_TSENSCTL_REGULEN;
/* use the recommended reset duration */
val |= (0xFE << BCM2835_TS_TSENSCTL_RSTDELAY_SHIFT);
/* trip_adc value from info */
val |= bcm2835_thermal_temp2adc(trip_temp,
offset,
slope)
<< BCM2835_TS_TSENSCTL_THOLD_SHIFT;
/* write the value back to the register as 2 steps */
writel(val, data->regs + BCM2835_TS_TSENSCTL);
val |= BCM2835_TS_TSENSCTL_RSTB;
writel(val, data->regs + BCM2835_TS_TSENSCTL);
}
data->tz = tz;
platform_set_drvdata(pdev, tz);
bcm2835_thermal_debugfs(pdev);
return 0;
err_tz:
thermal_zone_of_sensor_unregister(&pdev->dev, tz);
err_clk:
clk_disable_unprepare(data->clk);
return err;
}
static int bcm2835_thermal_remove(struct platform_device *pdev)
{
struct thermal_zone_device *tz = platform_get_drvdata(pdev);
struct bcm2835_thermal_data *data = tz->devdata;
debugfs_remove_recursive(data->debugfsdir);
thermal_zone_of_sensor_unregister(&pdev->dev, tz);
clk_disable_unprepare(data->clk);
return 0;
}
static struct platform_driver bcm2835_thermal_driver = {
.probe = bcm2835_thermal_probe,
.remove = bcm2835_thermal_remove,
.driver = {
.name = "bcm2835_thermal",
.of_match_table = bcm2835_thermal_of_match_table,
},
};
module_platform_driver(bcm2835_thermal_driver);
MODULE_AUTHOR("Martin Sperl");
MODULE_DESCRIPTION("Thermal driver for bcm2835 chip");
MODULE_LICENSE("GPL");

106
drivers/thermal/broadcom/ns-thermal.c Normal file
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@ -0,0 +1,106 @@
/*
* Copyright (C) 2017 Rafał Miłecki <rafal@milecki.pl>
*
* 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.
*/
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/thermal.h>
#define PVTMON_CONTROL0 0x00
#define PVTMON_CONTROL0_SEL_MASK 0x0000000e
#define PVTMON_CONTROL0_SEL_TEMP_MONITOR 0x00000000
#define PVTMON_CONTROL0_SEL_TEST_MODE 0x0000000e
#define PVTMON_STATUS 0x08
struct ns_thermal {
struct thermal_zone_device *tz;
void __iomem *pvtmon;
};
static int ns_thermal_get_temp(void *data, int *temp)
{
struct ns_thermal *ns_thermal = data;
int offset = thermal_zone_get_offset(ns_thermal->tz);
int slope = thermal_zone_get_slope(ns_thermal->tz);
u32 val;
val = readl(ns_thermal->pvtmon + PVTMON_CONTROL0);
if ((val & PVTMON_CONTROL0_SEL_MASK) != PVTMON_CONTROL0_SEL_TEMP_MONITOR) {
/* Clear current mode selection */
val &= ~PVTMON_CONTROL0_SEL_MASK;
/* Set temp monitor mode (it's the default actually) */
val |= PVTMON_CONTROL0_SEL_TEMP_MONITOR;
writel(val, ns_thermal->pvtmon + PVTMON_CONTROL0);
}
val = readl(ns_thermal->pvtmon + PVTMON_STATUS);
*temp = slope * val + offset;
return 0;
}
static const struct thermal_zone_of_device_ops ns_thermal_ops = {
.get_temp = ns_thermal_get_temp,
};
static int ns_thermal_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct ns_thermal *ns_thermal;
ns_thermal = devm_kzalloc(dev, sizeof(*ns_thermal), GFP_KERNEL);
if (!ns_thermal)
return -ENOMEM;
ns_thermal->pvtmon = of_iomap(dev_of_node(dev), 0);
if (WARN_ON(!ns_thermal->pvtmon))
return -ENOENT;
ns_thermal->tz = devm_thermal_zone_of_sensor_register(dev, 0,
ns_thermal,
&ns_thermal_ops);
if (IS_ERR(ns_thermal->tz)) {
iounmap(ns_thermal->pvtmon);
return PTR_ERR(ns_thermal->tz);
}
platform_set_drvdata(pdev, ns_thermal);
return 0;
}
static int ns_thermal_remove(struct platform_device *pdev)
{
struct ns_thermal *ns_thermal = platform_get_drvdata(pdev);
iounmap(ns_thermal->pvtmon);
return 0;
}
static const struct of_device_id ns_thermal_of_match[] = {
{ .compatible = "brcm,ns-thermal", },
{},
};
MODULE_DEVICE_TABLE(of, ns_thermal_of_match);
static struct platform_driver ns_thermal_driver = {
.probe = ns_thermal_probe,
.remove = ns_thermal_remove,
.driver = {
.name = "ns-thermal",
.of_match_table = ns_thermal_of_match,
},
};
module_platform_driver(ns_thermal_driver);
MODULE_AUTHOR("Rafał Miłecki <rafal@milecki.pl>");
MODULE_DESCRIPTION("Northstar thermal driver");
MODULE_LICENSE("GPL v2");

315
drivers/thermal/da9062-thermal.c Normal file
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@ -0,0 +1,315 @@
/*
* Thermal device driver for DA9062 and DA9061
* Copyright (C) 2017 Dialog Semiconductor
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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.
*/
/* When over-temperature is reached, an interrupt from the device will be
* triggered. Following this event the interrupt will be disabled and
* periodic transmission of uevents (HOT trip point) should define the
* first level of temperature supervision. It is expected that any final
* implementation of the thermal driver will include a .notify() function
* to implement these uevents to userspace.
*
* These uevents are intended to indicate non-invasive temperature control
* of the system, where the necessary measures for cooling are the
* responsibility of the host software. Once the temperature falls again,
* the IRQ is re-enabled so the start of a new over-temperature event can
* be detected without constant software monitoring.
*/
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/thermal.h>
#include <linux/workqueue.h>
#include <linux/mfd/da9062/core.h>
#include <linux/mfd/da9062/registers.h>
/* Minimum, maximum and default polling millisecond periods are provided
* here as an example. It is expected that any final implementation to also
* include a modification of these settings to match the required
* application.
*/
#define DA9062_DEFAULT_POLLING_MS_PERIOD 3000
#define DA9062_MAX_POLLING_MS_PERIOD 10000
#define DA9062_MIN_POLLING_MS_PERIOD 1000
#define DA9062_MILLI_CELSIUS(t) ((t) * 1000)
struct da9062_thermal_config {
const char *name;
};
struct da9062_thermal {
struct da9062 *hw;
struct delayed_work work;
struct thermal_zone_device *zone;
enum thermal_device_mode mode;
struct mutex lock; /* protection for da9062_thermal temperature */
int temperature;
int irq;
const struct da9062_thermal_config *config;
struct device *dev;
};
static void da9062_thermal_poll_on(struct work_struct *work)
{
struct da9062_thermal *thermal = container_of(work,
struct da9062_thermal,
work.work);
unsigned long delay;
unsigned int val;
int ret;
/* clear E_TEMP */
ret = regmap_write(thermal->hw->regmap,
DA9062AA_EVENT_B,
DA9062AA_E_TEMP_MASK);
if (ret < 0) {
dev_err(thermal->dev,
"Cannot clear the TJUNC temperature status\n");
goto err_enable_irq;
}
/* Now read E_TEMP again: it is acting like a status bit.
* If over-temperature, then this status will be true.
* If not over-temperature, this status will be false.
*/
ret = regmap_read(thermal->hw->regmap,
DA9062AA_EVENT_B,
&val);
if (ret < 0) {
dev_err(thermal->dev,
"Cannot check the TJUNC temperature status\n");
goto err_enable_irq;
}
if (val & DA9062AA_E_TEMP_MASK) {
mutex_lock(&thermal->lock);
thermal->temperature = DA9062_MILLI_CELSIUS(125);
mutex_unlock(&thermal->lock);
thermal_zone_device_update(thermal->zone,
THERMAL_EVENT_UNSPECIFIED);
delay = msecs_to_jiffies(thermal->zone->passive_delay);
schedule_delayed_work(&thermal->work, delay);
return;
}
mutex_lock(&thermal->lock);
thermal->temperature = DA9062_MILLI_CELSIUS(0);
mutex_unlock(&thermal->lock);
thermal_zone_device_update(thermal->zone,
THERMAL_EVENT_UNSPECIFIED);
err_enable_irq:
enable_irq(thermal->irq);
}
static irqreturn_t da9062_thermal_irq_handler(int irq, void *data)
{
struct da9062_thermal *thermal = data;
disable_irq_nosync(thermal->irq);
schedule_delayed_work(&thermal->work, 0);
return IRQ_HANDLED;
}
static int da9062_thermal_get_mode(struct thermal_zone_device *z,
enum thermal_device_mode *mode)
{
struct da9062_thermal *thermal = z->devdata;
*mode = thermal->mode;
return 0;
}
static int da9062_thermal_get_trip_type(struct thermal_zone_device *z,
int trip,
enum thermal_trip_type *type)
{
struct da9062_thermal *thermal = z->devdata;
switch (trip) {
case 0:
*type = THERMAL_TRIP_HOT;
break;
default:
dev_err(thermal->dev,
"Driver does not support more than 1 trip-wire\n");
return -EINVAL;
}
return 0;
}
static int da9062_thermal_get_trip_temp(struct thermal_zone_device *z,
int trip,
int *temp)
{
struct da9062_thermal *thermal = z->devdata;
switch (trip) {
case 0:
*temp = DA9062_MILLI_CELSIUS(125);
break;
default:
dev_err(thermal->dev,
"Driver does not support more than 1 trip-wire\n");
return -EINVAL;
}
return 0;
}
static int da9062_thermal_get_temp(struct thermal_zone_device *z,
int *temp)
{
struct da9062_thermal *thermal = z->devdata;
mutex_lock(&thermal->lock);
*temp = thermal->temperature;
mutex_unlock(&thermal->lock);
return 0;
}
static struct thermal_zone_device_ops da9062_thermal_ops = {
.get_temp = da9062_thermal_get_temp,
.get_mode = da9062_thermal_get_mode,
.get_trip_type = da9062_thermal_get_trip_type,
.get_trip_temp = da9062_thermal_get_trip_temp,
};
static const struct da9062_thermal_config da9062_config = {
.name = "da9062-thermal",
};
static const struct of_device_id da9062_compatible_reg_id_table[] = {
{ .compatible = "dlg,da9062-thermal", .data = &da9062_config },
{ },
};
MODULE_DEVICE_TABLE(of, da9062_compatible_reg_id_table);
static int da9062_thermal_probe(struct platform_device *pdev)
{
struct da9062 *chip = dev_get_drvdata(pdev->dev.parent);
struct da9062_thermal *thermal;
unsigned int pp_tmp = DA9062_DEFAULT_POLLING_MS_PERIOD;
const struct of_device_id *match;
int ret = 0;
match = of_match_node(da9062_compatible_reg_id_table,
pdev->dev.of_node);
if (!match)
return -ENXIO;
if (pdev->dev.of_node) {
if (!of_property_read_u32(pdev->dev.of_node,
"polling-delay-passive",
&pp_tmp)) {
if (pp_tmp < DA9062_MIN_POLLING_MS_PERIOD ||
pp_tmp > DA9062_MAX_POLLING_MS_PERIOD) {
dev_warn(&pdev->dev,
"Out-of-range polling period %d ms\n",
pp_tmp);
pp_tmp = DA9062_DEFAULT_POLLING_MS_PERIOD;
}
}
}
thermal = devm_kzalloc(&pdev->dev, sizeof(struct da9062_thermal),
GFP_KERNEL);
if (!thermal) {
ret = -ENOMEM;
goto err;
}
thermal->config = match->data;
thermal->hw = chip;
thermal->mode = THERMAL_DEVICE_ENABLED;
thermal->dev = &pdev->dev;
INIT_DELAYED_WORK(&thermal->work, da9062_thermal_poll_on);
mutex_init(&thermal->lock);
thermal->zone = thermal_zone_device_register(thermal->config->name,
1, 0, thermal,
&da9062_thermal_ops, NULL, pp_tmp,
0);
if (IS_ERR(thermal->zone)) {
dev_err(&pdev->dev, "Cannot register thermal zone device\n");
ret = PTR_ERR(thermal->zone);
goto err;
}
dev_dbg(&pdev->dev,
"TJUNC temperature polling period set at %d ms\n",
thermal->zone->passive_delay);
ret = platform_get_irq_byname(pdev, "THERMAL");
if (ret < 0) {
dev_err(&pdev->dev, "Failed to get platform IRQ.\n");
goto err_zone;
}
thermal->irq = ret;
ret = request_threaded_irq(thermal->irq, NULL,
da9062_thermal_irq_handler,
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
"THERMAL", thermal);
if (ret) {
dev_err(&pdev->dev,
"Failed to request thermal device IRQ.\n");
goto err_zone;
}
platform_set_drvdata(pdev, thermal);
return 0;
err_zone:
thermal_zone_device_unregister(thermal->zone);
err:
return ret;
}
static int da9062_thermal_remove(struct platform_device *pdev)
{
struct da9062_thermal *thermal = platform_get_drvdata(pdev);
free_irq(thermal->irq, thermal);
cancel_delayed_work_sync(&thermal->work);
thermal_zone_device_unregister(thermal->zone);
return 0;
}
static struct platform_driver da9062_thermal_driver = {
.probe = da9062_thermal_probe,
.remove = da9062_thermal_remove,
.driver = {
.name = "da9062-thermal",
.of_match_table = da9062_compatible_reg_id_table,
},
};
module_platform_driver(da9062_thermal_driver);
MODULE_AUTHOR("Steve Twiss");
MODULE_DESCRIPTION("Thermal TJUNC device driver for Dialog DA9062 and DA9061");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:da9062-thermal");

152
drivers/thermal/devfreq_cooling.c
View File

@ -28,6 +28,8 @@
#include <trace/events/thermal.h>
#define SCALE_ERROR_MITIGATION 100
static DEFINE_IDA(devfreq_ida);
/**
@ -45,6 +47,12 @@ static DEFINE_IDA(devfreq_ida);
* @freq_table_size: Size of the @freq_table and @power_table
* @power_ops: Pointer to devfreq_cooling_power, used to generate the
* @power_table.
* @res_util: Resource utilization scaling factor for the power.
* It is multiplied by 100 to minimize the error. It is used
* for estimation of the power budget instead of using
* 'utilization' (which is 'busy_time / 'total_time').
* The 'res_util' range is from 100 to (power_table[state] * 100)
* for the corresponding 'state'.
*/
struct devfreq_cooling_device {
int id;
@ -55,6 +63,8 @@ struct devfreq_cooling_device {
u32 *freq_table;
size_t freq_table_size;
struct devfreq_cooling_power *power_ops;
u32 res_util;
int capped_state;
};
/**
@ -164,27 +174,12 @@ freq_get_state(struct devfreq_cooling_device *dfc, unsigned long freq)
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
get_static_power(struct devfreq_cooling_device *dfc, unsigned long freq)
static unsigned long get_voltage(struct devfreq *df, 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;
opp = dev_pm_opp_find_freq_exact(dev, freq, true);
if (PTR_ERR(opp) == -ERANGE)
opp = dev_pm_opp_find_freq_exact(dev, freq, false);
@ -202,9 +197,35 @@ get_static_power(struct devfreq_cooling_device *dfc, unsigned long freq)
dev_err_ratelimited(dev,
"Failed to get voltage for frequency %lu\n",
freq);
return 0;
}
return voltage;
}
/**
* 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
get_static_power(struct devfreq_cooling_device *dfc, unsigned long freq)
{
struct devfreq *df = dfc->devfreq;
unsigned long voltage;
if (!dfc->power_ops->get_static_power)
return 0;
voltage = get_voltage(df, freq);
if (voltage == 0)
return 0;
return dfc->power_ops->get_static_power(df, voltage);
}
@ -239,6 +260,16 @@ get_dynamic_power(struct devfreq_cooling_device *dfc, unsigned long freq,
return power;
}
static inline unsigned long get_total_power(struct devfreq_cooling_device *dfc,
unsigned long freq,
unsigned long voltage)
{
return get_static_power(dfc, freq) + get_dynamic_power(dfc, freq,
voltage);
}
static int devfreq_cooling_get_requested_power(struct thermal_cooling_device *cdev,
struct thermal_zone_device *tz,
u32 *power)
@ -248,27 +279,55 @@ static int devfreq_cooling_get_requested_power(struct thermal_cooling_device *cd
struct devfreq_dev_status *status = &df->last_status;
unsigned long state;
unsigned long freq = status->current_frequency;
u32 dyn_power, static_power;
unsigned long voltage;
u32 dyn_power = 0;
u32 static_power = 0;
int res;
/* Get dynamic power for state */
state = freq_get_state(dfc, freq);
if (state == THERMAL_CSTATE_INVALID)
return -EAGAIN;
if (state == THERMAL_CSTATE_INVALID) {
res = -EAGAIN;
goto fail;
}
dyn_power = dfc->power_table[state];
if (dfc->power_ops->get_real_power) {
voltage = get_voltage(df, freq);
if (voltage == 0) {
res = -EINVAL;
goto fail;
}
/* Scale dynamic power for utilization */
dyn_power = (dyn_power * status->busy_time) / status->total_time;
res = dfc->power_ops->get_real_power(df, power, freq, voltage);
if (!res) {
state = dfc->capped_state;
dfc->res_util = dfc->power_table[state];
dfc->res_util *= SCALE_ERROR_MITIGATION;
/* Get static power */
static_power = get_static_power(dfc, freq);
if (*power > 1)
dfc->res_util /= *power;
} else {
goto fail;
}
} else {
dyn_power = dfc->power_table[state];
/* Scale dynamic power for utilization */
dyn_power *= status->busy_time;
dyn_power /= status->total_time;
/* Get static power */
static_power = get_static_power(dfc, freq);
*power = dyn_power + static_power;
}
trace_thermal_power_devfreq_get_power(cdev, status, freq, dyn_power,
static_power);
*power = dyn_power + static_power;
static_power, *power);
return 0;
fail:
/* It is safe to set max in this case */
dfc->res_util = SCALE_ERROR_MITIGATION;
return res;
}
static int devfreq_cooling_state2power(struct thermal_cooling_device *cdev,
@ -301,26 +360,34 @@ static int devfreq_cooling_power2state(struct thermal_cooling_device *cdev,
unsigned long busy_time;
s32 dyn_power;
u32 static_power;
s32 est_power;
int i;
static_power = get_static_power(dfc, freq);
if (dfc->power_ops->get_real_power) {
/* Scale for resource utilization */
est_power = power * dfc->res_util;
est_power /= SCALE_ERROR_MITIGATION;
} else {
static_power = get_static_power(dfc, freq);
dyn_power = power - static_power;
dyn_power = dyn_power > 0 ? dyn_power : 0;
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;
/* Scale dynamic power for utilization */
busy_time = status->busy_time ?: 1;
est_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])
if (est_power >= dfc->power_table[i])
break;
*state = i;
dfc->capped_state = i;
trace_thermal_power_devfreq_limit(cdev, freq, *state, power);
return 0;
}
@ -376,7 +443,7 @@ static int devfreq_cooling_gen_tables(struct devfreq_cooling_device *dfc)
}
for (i = 0, freq = ULONG_MAX; i < num_opps; i++, freq--) {
unsigned long power_dyn, voltage;
unsigned long power, voltage;
struct dev_pm_opp *opp;
opp = dev_pm_opp_find_freq_floor(dev, &freq);
@ -389,12 +456,15 @@ static int devfreq_cooling_gen_tables(struct devfreq_cooling_device *dfc)
dev_pm_opp_put(opp);
if (dfc->power_ops) {
power_dyn = get_dynamic_power(dfc, freq, voltage);
if (dfc->power_ops->get_real_power)
power = get_total_power(dfc, freq, voltage);
else
power = 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);
dev_dbg(dev, "Power table: %lu MHz @ %lu mV: %lu = %lu mW\n",
freq / 1000000, voltage, power, power);
power_table[i] = power_dyn;
power_table[i] = power;
}
freq_table[i] = freq;

9
drivers/thermal/intel_soc_dts_thermal.c
View File

@ -73,8 +73,12 @@ static int __init intel_soc_thermal_init(void)
IRQF_TRIGGER_RISING | IRQF_ONESHOT,
"soc_dts", soc_dts);
if (err) {
pr_err("request_threaded_irq ret %d\n", err);
goto error_irq;
/*
* Do not just error out because the user space thermal
* daemon such as DPTF may use polling instead of being
* interrupt driven.
*/
pr_warn("request_threaded_irq ret %d\n", err);
}
}
@ -88,7 +92,6 @@ static int __init intel_soc_thermal_init(void)
error_trips:
if (soc_dts_thres_irq)
free_irq(soc_dts_thres_irq, soc_dts);
error_irq:
intel_soc_dts_iosf_exit(soc_dts);
return err;

2
drivers/thermal/mtk_thermal.c
View File

@ -191,7 +191,7 @@ static const int mt8173_bank_data[MT8173_NUM_ZONES][3] = {
};
static const int mt8173_msr[MT8173_NUM_SENSORS_PER_ZONE] = {
TEMP_MSR0, TEMP_MSR1, TEMP_MSR2, TEMP_MSR2
TEMP_MSR0, TEMP_MSR1, TEMP_MSR2, TEMP_MSR3
};
static const int mt8173_adcpnp[MT8173_NUM_SENSORS_PER_ZONE] = {

199
drivers/thermal/rcar_gen3_thermal.c
View File

@ -20,12 +20,14 @@
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/spinlock.h>
#include <linux/thermal.h>
#include "thermal_core.h"
/* Register offsets */
#define REG_GEN3_IRQSTR 0x04
#define REG_GEN3_IRQMSK 0x08
@ -41,6 +43,14 @@
#define REG_GEN3_THCODE2 0x54
#define REG_GEN3_THCODE3 0x58
/* IRQ{STR,MSK,EN} bits */
#define IRQ_TEMP1 BIT(0)
#define IRQ_TEMP2 BIT(1)
#define IRQ_TEMP3 BIT(2)
#define IRQ_TEMPD1 BIT(3)
#define IRQ_TEMPD2 BIT(4)
#define IRQ_TEMPD3 BIT(5)
/* CTSR bits */
#define CTSR_PONM BIT(8)
#define CTSR_AOUT BIT(7)
@ -72,11 +82,15 @@ struct rcar_gen3_thermal_tsc {
void __iomem *base;
struct thermal_zone_device *zone;
struct equation_coefs coef;
struct mutex lock;
int low;
int high;
};
struct rcar_gen3_thermal_priv {
struct rcar_gen3_thermal_tsc *tscs[TSC_MAX_NUM];
unsigned int num_tscs;
spinlock_t lock; /* Protect interrupts on and off */
const struct rcar_gen3_thermal_data *data;
};
struct rcar_gen3_thermal_data {
@ -114,6 +128,7 @@ static inline void rcar_gen3_thermal_write(struct rcar_gen3_thermal_tsc *tsc,
#define FIXPT_SHIFT 7
#define FIXPT_INT(_x) ((_x) << FIXPT_SHIFT)
#define INT_FIXPT(_x) ((_x) >> FIXPT_SHIFT)
#define FIXPT_DIV(_a, _b) DIV_ROUND_CLOSEST(((_a) << FIXPT_SHIFT), (_b))
#define FIXPT_TO_MCELSIUS(_x) ((_x) * 1000 >> FIXPT_SHIFT)
@ -163,16 +178,12 @@ static int rcar_gen3_thermal_get_temp(void *devdata, int *temp)
u32 reg;
/* Read register and convert to mili Celsius */
mutex_lock(&tsc->lock);
reg = rcar_gen3_thermal_read(tsc, REG_GEN3_TEMP) & CTEMP_MASK;
val1 = FIXPT_DIV(FIXPT_INT(reg) - tsc->coef.b1, tsc->coef.a1);
val2 = FIXPT_DIV(FIXPT_INT(reg) - tsc->coef.b2, tsc->coef.a2);
mcelsius = FIXPT_TO_MCELSIUS((val1 + val2) / 2);
mutex_unlock(&tsc->lock);
/* Make sure we are inside specifications */
if ((mcelsius < MCELSIUS(-40)) || (mcelsius > MCELSIUS(125)))
return -EIO;
@ -183,10 +194,90 @@ static int rcar_gen3_thermal_get_temp(void *devdata, int *temp)
return 0;
}
static int rcar_gen3_thermal_mcelsius_to_temp(struct rcar_gen3_thermal_tsc *tsc,
int mcelsius)
{
int celsius, val1, val2;
celsius = DIV_ROUND_CLOSEST(mcelsius, 1000);
val1 = celsius * tsc->coef.a1 + tsc->coef.b1;
val2 = celsius * tsc->coef.a2 + tsc->coef.b2;
return INT_FIXPT((val1 + val2) / 2);
}
static int rcar_gen3_thermal_set_trips(void *devdata, int low, int high)
{
struct rcar_gen3_thermal_tsc *tsc = devdata;
low = clamp_val(low, -40000, 125000);
high = clamp_val(high, -40000, 125000);
rcar_gen3_thermal_write(tsc, REG_GEN3_IRQTEMP1,
rcar_gen3_thermal_mcelsius_to_temp(tsc, low));
rcar_gen3_thermal_write(tsc, REG_GEN3_IRQTEMP2,
rcar_gen3_thermal_mcelsius_to_temp(tsc, high));
tsc->low = low;
tsc->high = high;
return 0;
}
static struct thermal_zone_of_device_ops rcar_gen3_tz_of_ops = {
.get_temp = rcar_gen3_thermal_get_temp,
.set_trips = rcar_gen3_thermal_set_trips,
};
static void rcar_thermal_irq_set(struct rcar_gen3_thermal_priv *priv, bool on)
{
unsigned int i;
u32 val = on ? IRQ_TEMPD1 | IRQ_TEMP2 : 0;
for (i = 0; i < priv->num_tscs; i++)
rcar_gen3_thermal_write(priv->tscs[i], REG_GEN3_IRQMSK, val);
}
static irqreturn_t rcar_gen3_thermal_irq(int irq, void *data)
{
struct rcar_gen3_thermal_priv *priv = data;
u32 status;
int i, ret = IRQ_HANDLED;
spin_lock(&priv->lock);
for (i = 0; i < priv->num_tscs; i++) {
status = rcar_gen3_thermal_read(priv->tscs[i], REG_GEN3_IRQSTR);
rcar_gen3_thermal_write(priv->tscs[i], REG_GEN3_IRQSTR, 0);
if (status)
ret = IRQ_WAKE_THREAD;
}
if (ret == IRQ_WAKE_THREAD)
rcar_thermal_irq_set(priv, false);
spin_unlock(&priv->lock);
return ret;
}
static irqreturn_t rcar_gen3_thermal_irq_thread(int irq, void *data)
{
struct rcar_gen3_thermal_priv *priv = data;
unsigned long flags;
int i;
for (i = 0; i < priv->num_tscs; i++)
thermal_zone_device_update(priv->tscs[i]->zone,
THERMAL_EVENT_UNSPECIFIED);
spin_lock_irqsave(&priv->lock, flags);
rcar_thermal_irq_set(priv, true);
spin_unlock_irqrestore(&priv->lock, flags);
return IRQ_HANDLED;
}
static void r8a7795_thermal_init(struct rcar_gen3_thermal_tsc *tsc)
{
rcar_gen3_thermal_write(tsc, REG_GEN3_CTSR, CTSR_THBGR);
@ -195,7 +286,11 @@ static void r8a7795_thermal_init(struct rcar_gen3_thermal_tsc *tsc)
usleep_range(1000, 2000);
rcar_gen3_thermal_write(tsc, REG_GEN3_CTSR, CTSR_PONM);
rcar_gen3_thermal_write(tsc, REG_GEN3_IRQCTL, 0x3F);
rcar_gen3_thermal_write(tsc, REG_GEN3_IRQMSK, 0);
rcar_gen3_thermal_write(tsc, REG_GEN3_IRQEN, IRQ_TEMPD1 | IRQ_TEMP2);
rcar_gen3_thermal_write(tsc, REG_GEN3_CTSR,
CTSR_PONM | CTSR_AOUT | CTSR_THBGR | CTSR_VMEN);
@ -219,9 +314,14 @@ static void r8a7796_thermal_init(struct rcar_gen3_thermal_tsc *tsc)
usleep_range(1000, 2000);
rcar_gen3_thermal_write(tsc, REG_GEN3_IRQCTL, 0x3F);
rcar_gen3_thermal_write(tsc, REG_GEN3_IRQMSK, 0);
rcar_gen3_thermal_write(tsc, REG_GEN3_IRQEN, IRQ_TEMPD1 | IRQ_TEMP2);
reg_val = rcar_gen3_thermal_read(tsc, REG_GEN3_THCTR);
reg_val |= THCTR_THSST;
rcar_gen3_thermal_write(tsc, REG_GEN3_THCTR, reg_val);
usleep_range(1000, 2000);
}
static const struct rcar_gen3_thermal_data r8a7795_data = {
@ -255,9 +355,8 @@ static int rcar_gen3_thermal_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct resource *res;
struct thermal_zone_device *zone;
int ret, i;
const struct rcar_gen3_thermal_data *match_data =
of_device_get_match_data(dev);
int ret, irq, i;
char *irqname;
/* default values if FUSEs are missing */
/* TODO: Read values from hardware on supported platforms */
@ -272,24 +371,50 @@ static int rcar_gen3_thermal_probe(struct platform_device *pdev)
if (!priv)
return -ENOMEM;
priv->data = of_device_get_match_data(dev);
spin_lock_init(&priv->lock);
platform_set_drvdata(pdev, priv);
/*
* Request 2 (of the 3 possible) IRQs, the driver only needs to
* to trigger on the low and high trip points of the current
* temp window at this point.
*/
for (i = 0; i < 2; i++) {
irq = platform_get_irq(pdev, i);
if (irq < 0)
return irq;
irqname = devm_kasprintf(dev, GFP_KERNEL, "%s:ch%d",
dev_name(dev), i);
if (!irqname)
return -ENOMEM;
ret = devm_request_threaded_irq(dev, irq, rcar_gen3_thermal_irq,
rcar_gen3_thermal_irq_thread,
IRQF_SHARED, irqname, priv);
if (ret)
return ret;
}
pm_runtime_enable(dev);
pm_runtime_get_sync(dev);
for (i = 0; i < TSC_MAX_NUM; i++) {
struct rcar_gen3_thermal_tsc *tsc;
res = platform_get_resource(pdev, IORESOURCE_MEM, i);
if (!res)
break;
tsc = devm_kzalloc(dev, sizeof(*tsc), GFP_KERNEL);
if (!tsc) {
ret = -ENOMEM;
goto error_unregister;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, i);
if (!res)
break;
tsc->base = devm_ioremap_resource(dev, res);
if (IS_ERR(tsc->base)) {
ret = PTR_ERR(tsc->base);
@ -297,9 +422,8 @@ static int rcar_gen3_thermal_probe(struct platform_device *pdev)
}
priv->tscs[i] = tsc;
mutex_init(&tsc->lock);
match_data->thermal_init(tsc);
priv->data->thermal_init(tsc);
rcar_gen3_thermal_calc_coefs(&tsc->coef, ptat, thcode[i]);
zone = devm_thermal_zone_of_sensor_register(dev, i, tsc,
@ -310,8 +434,23 @@ static int rcar_gen3_thermal_probe(struct platform_device *pdev)
goto error_unregister;
}
tsc->zone = zone;
ret = of_thermal_get_ntrips(tsc->zone);
if (ret < 0)
goto error_unregister;
dev_info(dev, "TSC%d: Loaded %d trip points\n", i, ret);
}
priv->num_tscs = i;
if (!priv->num_tscs) {
ret = -ENODEV;
goto error_unregister;
}
rcar_thermal_irq_set(priv, true);
return 0;
error_unregister:
@ -320,9 +459,39 @@ error_unregister:
return ret;
}
static int __maybe_unused rcar_gen3_thermal_suspend(struct device *dev)
{
struct rcar_gen3_thermal_priv *priv = dev_get_drvdata(dev);
rcar_thermal_irq_set(priv, false);
return 0;
}
static int __maybe_unused rcar_gen3_thermal_resume(struct device *dev)
{
struct rcar_gen3_thermal_priv *priv = dev_get_drvdata(dev);
unsigned int i;
for (i = 0; i < priv->num_tscs; i++) {
struct rcar_gen3_thermal_tsc *tsc = priv->tscs[i];
priv->data->thermal_init(tsc);
rcar_gen3_thermal_set_trips(tsc, tsc->low, tsc->high);
}
rcar_thermal_irq_set(priv, true);
return 0;
}
static SIMPLE_DEV_PM_OPS(rcar_gen3_thermal_pm_ops, rcar_gen3_thermal_suspend,
rcar_gen3_thermal_resume);
static struct platform_driver rcar_gen3_thermal_driver = {
.driver = {
.name = "rcar_gen3_thermal",
.pm = &rcar_gen3_thermal_pm_ops,
.of_match_table = rcar_gen3_thermal_dt_ids,
},
.probe = rcar_gen3_thermal_probe,

64
drivers/thermal/thermal_core.c
View File

@ -45,8 +45,10 @@ static LIST_HEAD(thermal_governor_list);
static DEFINE_MUTEX(thermal_list_lock);
static DEFINE_MUTEX(thermal_governor_lock);
static DEFINE_MUTEX(poweroff_lock);
static atomic_t in_suspend;
static bool power_off_triggered;
static struct thermal_governor *def_governor;
@ -322,6 +324,54 @@ static void handle_non_critical_trips(struct thermal_zone_device *tz,
def_governor->throttle(tz, trip);
}
/**
* thermal_emergency_poweroff_func - emergency poweroff work after a known delay
* @work: work_struct associated with the emergency poweroff function
*
* This function is called in very critical situations to force
* a kernel poweroff after a configurable timeout value.
*/
static void thermal_emergency_poweroff_func(struct work_struct *work)
{
/*
* We have reached here after the emergency thermal shutdown
* Waiting period has expired. This means orderly_poweroff has
* not been able to shut off the system for some reason.
* Try to shut down the system immediately using kernel_power_off
* if populated
*/
WARN(1, "Attempting kernel_power_off: Temperature too high\n");
kernel_power_off();
/*
* Worst of the worst case trigger emergency restart
*/
WARN(1, "Attempting emergency_restart: Temperature too high\n");
emergency_restart();
}
static DECLARE_DELAYED_WORK(thermal_emergency_poweroff_work,
thermal_emergency_poweroff_func);
/**
* thermal_emergency_poweroff - Trigger an emergency system poweroff
*
* This may be called from any critical situation to trigger a system shutdown
* after a known period of time. By default this is not scheduled.
*/
void thermal_emergency_poweroff(void)
{
int poweroff_delay_ms = CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS;
/*
* poweroff_delay_ms must be a carefully profiled positive value.
* Its a must for thermal_emergency_poweroff_work to be scheduled
*/
if (poweroff_delay_ms <= 0)
return;
schedule_delayed_work(&thermal_emergency_poweroff_work,
msecs_to_jiffies(poweroff_delay_ms));
}
static void handle_critical_trips(struct thermal_zone_device *tz,
int trip, enum thermal_trip_type trip_type)
{
@ -342,7 +392,17 @@ static void handle_critical_trips(struct thermal_zone_device *tz,
dev_emerg(&tz->device,
"critical temperature reached(%d C),shutting down\n",
tz->temperature / 1000);
orderly_poweroff(true);
mutex_lock(&poweroff_lock);
if (!power_off_triggered) {
/*
* Queue a backup emergency shutdown in the event of
* orderly_poweroff failure
*/
thermal_emergency_poweroff();
orderly_poweroff(true);
power_off_triggered = true;
}
mutex_unlock(&poweroff_lock);
}
}
@ -1463,6 +1523,7 @@ static int __init thermal_init(void)
{
int result;
mutex_init(&poweroff_lock);
result = thermal_register_governors();
if (result)
goto error;
@ -1497,6 +1558,7 @@ error:
ida_destroy(&thermal_cdev_ida);
mutex_destroy(&thermal_list_lock);
mutex_destroy(&thermal_governor_lock);
mutex_destroy(&poweroff_lock);
return result;
}

10
drivers/thermal/ti-soc-thermal/dra752-thermal-data.c
View File

@ -410,8 +410,6 @@ const struct ti_bandgap_data dra752_data = {
.domain = "cpu",
.register_cooling = ti_thermal_register_cpu_cooling,
.unregister_cooling = ti_thermal_unregister_cpu_cooling,
.slope = DRA752_GRADIENT_SLOPE,
.constant = DRA752_GRADIENT_CONST,
.slope_pcb = DRA752_GRADIENT_SLOPE_W_PCB,
.constant_pcb = DRA752_GRADIENT_CONST_W_PCB,
},
@ -419,8 +417,6 @@ const struct ti_bandgap_data dra752_data = {
.registers = &dra752_gpu_temp_sensor_registers,
.ts_data = &dra752_gpu_temp_sensor_data,
.domain = "gpu",
.slope = DRA752_GRADIENT_SLOPE,
.constant = DRA752_GRADIENT_CONST,
.slope_pcb = DRA752_GRADIENT_SLOPE_W_PCB,
.constant_pcb = DRA752_GRADIENT_CONST_W_PCB,
},
@ -428,8 +424,6 @@ const struct ti_bandgap_data dra752_data = {
.registers = &dra752_core_temp_sensor_registers,
.ts_data = &dra752_core_temp_sensor_data,
.domain = "core",
.slope = DRA752_GRADIENT_SLOPE,
.constant = DRA752_GRADIENT_CONST,
.slope_pcb = DRA752_GRADIENT_SLOPE_W_PCB,
.constant_pcb = DRA752_GRADIENT_CONST_W_PCB,
},
@ -437,8 +431,6 @@ const struct ti_bandgap_data dra752_data = {
.registers = &dra752_dspeve_temp_sensor_registers,
.ts_data = &dra752_dspeve_temp_sensor_data,
.domain = "dspeve",
.slope = DRA752_GRADIENT_SLOPE,
.constant = DRA752_GRADIENT_CONST,
.slope_pcb = DRA752_GRADIENT_SLOPE_W_PCB,
.constant_pcb = DRA752_GRADIENT_CONST_W_PCB,
},
@ -446,8 +438,6 @@ const struct ti_bandgap_data dra752_data = {
.registers = &dra752_iva_temp_sensor_registers,
.ts_data = &dra752_iva_temp_sensor_data,
.domain = "iva",
.slope = DRA752_GRADIENT_SLOPE,
.constant = DRA752_GRADIENT_CONST,
.slope_pcb = DRA752_GRADIENT_SLOPE_W_PCB,
.constant_pcb = DRA752_GRADIENT_CONST_W_PCB,
},

4
drivers/thermal/ti-soc-thermal/omap3-thermal-data.c
View File

@ -91,8 +91,6 @@ const struct ti_bandgap_data omap34xx_data = {
.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,
@ -164,8 +162,6 @@ const struct ti_bandgap_data omap36xx_data = {
.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,

6
drivers/thermal/ti-soc-thermal/omap4-thermal-data.c
View File

@ -82,8 +82,6 @@ const struct ti_bandgap_data omap4430_data = {
.registers = &omap4430_mpu_temp_sensor_registers,
.ts_data = &omap4430_mpu_temp_sensor_data,
.domain = "cpu",
.slope = OMAP_GRADIENT_SLOPE_4430,
.constant = OMAP_GRADIENT_CONST_4430,
.slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_4430,
.constant_pcb = OMAP_GRADIENT_CONST_W_PCB_4430,
.register_cooling = ti_thermal_register_cpu_cooling,
@ -222,8 +220,6 @@ const struct ti_bandgap_data omap4460_data = {
.registers = &omap4460_mpu_temp_sensor_registers,
.ts_data = &omap4460_mpu_temp_sensor_data,
.domain = "cpu",
.slope = OMAP_GRADIENT_SLOPE_4460,
.constant = OMAP_GRADIENT_CONST_4460,
.slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_4460,
.constant_pcb = OMAP_GRADIENT_CONST_W_PCB_4460,
.register_cooling = ti_thermal_register_cpu_cooling,
@ -255,8 +251,6 @@ const struct ti_bandgap_data omap4470_data = {
.registers = &omap4460_mpu_temp_sensor_registers,
.ts_data = &omap4460_mpu_temp_sensor_data,
.domain = "cpu",
.slope = OMAP_GRADIENT_SLOPE_4470,
.constant = OMAP_GRADIENT_CONST_4470,
.slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_4470,
.constant_pcb = OMAP_GRADIENT_CONST_W_PCB_4470,
.register_cooling = ti_thermal_register_cpu_cooling,

4
drivers/thermal/ti-soc-thermal/omap5-thermal-data.c
View File

@ -336,8 +336,6 @@ const struct ti_bandgap_data omap5430_data = {
.domain = "cpu",
.register_cooling = ti_thermal_register_cpu_cooling,
.unregister_cooling = ti_thermal_unregister_cpu_cooling,
.slope = OMAP_GRADIENT_SLOPE_5430_CPU,
.constant = OMAP_GRADIENT_CONST_5430_CPU,
.slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_5430_CPU,
.constant_pcb = OMAP_GRADIENT_CONST_W_PCB_5430_CPU,
},
@ -345,8 +343,6 @@ const struct ti_bandgap_data omap5430_data = {
.registers = &omap5430_gpu_temp_sensor_registers,
.ts_data = &omap5430_gpu_temp_sensor_data,
.domain = "gpu",
.slope = OMAP_GRADIENT_SLOPE_5430_GPU,
.constant = OMAP_GRADIENT_CONST_5430_GPU,
.slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_5430_GPU,
.constant_pcb = OMAP_GRADIENT_CONST_W_PCB_5430_GPU,
},

4
drivers/thermal/ti-soc-thermal/ti-bandgap.h
View File

@ -254,8 +254,6 @@ struct ti_bandgap {
* @ts_data: pointer to struct with thresholds, limits of temperature sensor
* @registers: pointer to the list of register offsets and bitfields
* @domain: the name of the domain where the sensor is located
* @slope: sensor gradient slope info for hotspot extrapolation equation
* @constant: sensor gradient const info for hotspot extrapolation equation
* @slope_pcb: sensor gradient slope info for hotspot extrapolation equation
* with no external influence
* @constant_pcb: sensor gradient const info for hotspot extrapolation equation
@ -274,8 +272,6 @@ struct ti_temp_sensor {
struct temp_sensor_registers *registers;
char *domain;
/* for hotspot extrapolation */
const int slope;
const int constant;
const int slope_pcb;
const int constant_pcb;
int (*register_cooling)(struct ti_bandgap *bgp, int id);

158
drivers/thermal/ti-soc-thermal/ti-thermal-common.c
View File

@ -96,8 +96,8 @@ static inline int __ti_thermal_get_temp(void *devdata, int *temp)
return ret;
/* Default constants */
slope = s->slope;
constant = s->constant;
slope = thermal_zone_get_slope(data->ti_thermal);
constant = thermal_zone_get_offset(data->ti_thermal);
pcb_tz = data->pcb_tz;
/* In case pcb zone is available, use the extrapolation rule with it */
@ -126,119 +126,6 @@ static inline int ti_thermal_get_temp(struct thermal_zone_device *thermal,
return __ti_thermal_get_temp(data, temp);
}
/* Bind callback functions for thermal zone */
static int ti_thermal_bind(struct thermal_zone_device *thermal,
struct thermal_cooling_device *cdev)
{
struct ti_thermal_data *data = thermal->devdata;
int id;
if (!data || IS_ERR(data))
return -ENODEV;
/* check if this is the cooling device we registered */
if (data->cool_dev != cdev)
return 0;
id = data->sensor_id;
/* Simple thing, two trips, one passive another critical */
return thermal_zone_bind_cooling_device(thermal, 0, cdev,
/* bind with min and max states defined by cpu_cooling */
THERMAL_NO_LIMIT,
THERMAL_NO_LIMIT,
THERMAL_WEIGHT_DEFAULT);
}
/* Unbind callback functions for thermal zone */
static int ti_thermal_unbind(struct thermal_zone_device *thermal,
struct thermal_cooling_device *cdev)
{
struct ti_thermal_data *data = thermal->devdata;
if (!data || IS_ERR(data))
return -ENODEV;
/* check if this is the cooling device we registered */
if (data->cool_dev != cdev)
return 0;
/* Simple thing, two trips, one passive another critical */
return thermal_zone_unbind_cooling_device(thermal, 0, cdev);
}
/* Get mode callback functions for thermal zone */
static int ti_thermal_get_mode(struct thermal_zone_device *thermal,
enum thermal_device_mode *mode)
{
struct ti_thermal_data *data = thermal->devdata;
if (data)
*mode = data->mode;
return 0;
}
/* Set mode callback functions for thermal zone */
static int ti_thermal_set_mode(struct thermal_zone_device *thermal,
enum thermal_device_mode mode)
{
struct ti_thermal_data *data = thermal->devdata;
struct ti_bandgap *bgp;
bgp = data->bgp;
if (!data->ti_thermal) {
dev_notice(&thermal->device, "thermal zone not registered\n");
return 0;
}
mutex_lock(&data->ti_thermal->lock);
if (mode == THERMAL_DEVICE_ENABLED)
data->ti_thermal->polling_delay = FAST_TEMP_MONITORING_RATE;
else
data->ti_thermal->polling_delay = 0;
mutex_unlock(&data->ti_thermal->lock);
data->mode = mode;
ti_bandgap_write_update_interval(bgp, data->sensor_id,
data->ti_thermal->polling_delay);
thermal_zone_device_update(data->ti_thermal, THERMAL_EVENT_UNSPECIFIED);
dev_dbg(&thermal->device, "thermal polling set for duration=%d msec\n",
data->ti_thermal->polling_delay);
return 0;
}
/* Get trip type callback functions for thermal zone */
static int ti_thermal_get_trip_type(struct thermal_zone_device *thermal,
int trip, enum thermal_trip_type *type)
{
if (!ti_thermal_is_valid_trip(trip))
return -EINVAL;
if (trip + 1 == OMAP_TRIP_NUMBER)
*type = THERMAL_TRIP_CRITICAL;
else
*type = THERMAL_TRIP_PASSIVE;
return 0;
}
/* Get trip temperature callback functions for thermal zone */
static int ti_thermal_get_trip_temp(struct thermal_zone_device *thermal,
int trip, int *temp)
{
if (!ti_thermal_is_valid_trip(trip))
return -EINVAL;
*temp = ti_thermal_get_trip_value(trip);
return 0;
}
static int __ti_thermal_get_trend(void *p, int trip, enum thermal_trend *trend)
{
struct ti_thermal_data *data = p;
@ -262,38 +149,11 @@ static int __ti_thermal_get_trend(void *p, int trip, enum thermal_trend *trend)
return 0;
}
/* Get the temperature trend callback functions for thermal zone */
static int ti_thermal_get_trend(struct thermal_zone_device *thermal,
int trip, enum thermal_trend *trend)
{
return __ti_thermal_get_trend(thermal->devdata, trip, trend);
}
/* Get critical temperature callback functions for thermal zone */
static int ti_thermal_get_crit_temp(struct thermal_zone_device *thermal,
int *temp)
{
/* shutdown zone */
return ti_thermal_get_trip_temp(thermal, OMAP_TRIP_NUMBER - 1, temp);
}
static const struct thermal_zone_of_device_ops ti_of_thermal_ops = {
.get_temp = __ti_thermal_get_temp,
.get_trend = __ti_thermal_get_trend,
};
static struct thermal_zone_device_ops ti_thermal_ops = {
.get_temp = ti_thermal_get_temp,
.get_trend = ti_thermal_get_trend,
.bind = ti_thermal_bind,
.unbind = ti_thermal_unbind,
.get_mode = ti_thermal_get_mode,
.set_mode = ti_thermal_set_mode,
.get_trip_type = ti_thermal_get_trip_type,
.get_trip_temp = ti_thermal_get_trip_temp,
.get_crit_temp = ti_thermal_get_crit_temp,
};
static struct ti_thermal_data
*ti_thermal_build_data(struct ti_bandgap *bgp, int id)
{
@ -331,18 +191,10 @@ int ti_thermal_expose_sensor(struct ti_bandgap *bgp, int id,
data->ti_thermal = devm_thermal_zone_of_sensor_register(bgp->dev, id,
data, &ti_of_thermal_ops);
if (IS_ERR(data->ti_thermal)) {
/* Create thermal zone */
data->ti_thermal = thermal_zone_device_register(domain,
OMAP_TRIP_NUMBER, 0, data, &ti_thermal_ops,
NULL, FAST_TEMP_MONITORING_RATE,
FAST_TEMP_MONITORING_RATE);
if (IS_ERR(data->ti_thermal)) {
dev_err(bgp->dev, "thermal zone device is NULL\n");
return PTR_ERR(data->ti_thermal);
}
data->ti_thermal->polling_delay = FAST_TEMP_MONITORING_RATE;
data->our_zone = true;
dev_err(bgp->dev, "thermal zone device is NULL\n");
return PTR_ERR(data->ti_thermal);
}
ti_bandgap_set_sensor_data(bgp, id, data);
ti_bandgap_write_update_interval(bgp, data->sensor_id,
data->ti_thermal->polling_delay);

16
drivers/thermal/ti-soc-thermal/ti-thermal.h
View File

@ -25,22 +25,6 @@
#include "ti-bandgap.h"
/* sensors gradient and offsets */
#define OMAP_GRADIENT_SLOPE_4430 0
#define OMAP_GRADIENT_CONST_4430 20000
#define OMAP_GRADIENT_SLOPE_4460 348
#define OMAP_GRADIENT_CONST_4460 -9301
#define OMAP_GRADIENT_SLOPE_4470 308
#define OMAP_GRADIENT_CONST_4470 -7896
#define OMAP_GRADIENT_SLOPE_5430_CPU 65
#define OMAP_GRADIENT_CONST_5430_CPU -1791
#define OMAP_GRADIENT_SLOPE_5430_GPU 117
#define OMAP_GRADIENT_CONST_5430_GPU -2992
#define DRA752_GRADIENT_SLOPE 0
#define DRA752_GRADIENT_CONST 2000
/* PCB sensor calculation constants */
#define OMAP_GRADIENT_SLOPE_W_PCB_4430 0
#define OMAP_GRADIENT_CONST_W_PCB_4430 20000

19
include/linux/devfreq_cooling.h
View File

@ -34,6 +34,23 @@
* If get_dynamic_power() is NULL, then the
* dynamic power is calculated as
* @dyn_power_coeff * frequency * voltage^2
* @get_real_power: When this is set, the framework uses it to ask the
* device driver for the actual power.
* Some devices have more sophisticated methods
* (like power counters) to approximate the actual power
* that they use.
* This function provides more accurate data to the
* thermal governor. When the driver does not provide
* such function, framework just uses pre-calculated
* table and scale the power by 'utilization'
* (based on 'busy_time' and 'total_time' taken from
* devfreq 'last_status').
* The value returned by this function must be lower
* or equal than the maximum power value
* for the current state
* (which can be found in power_table[state]).
* When this interface is used, the power_table holds
* max total (static + dynamic) power value for each OPP.
*/
struct devfreq_cooling_power {
unsigned long (*get_static_power)(struct devfreq *devfreq,
@ -41,6 +58,8 @@ struct devfreq_cooling_power {
unsigned long (*get_dynamic_power)(struct devfreq *devfreq,
unsigned long freq,
unsigned long voltage);
int (*get_real_power)(struct devfreq *df, u32 *power,
unsigned long freq, unsigned long voltage);
unsigned long dyn_power_coeff;
};

11
include/trace/events/thermal.h
View File

@ -151,9 +151,9 @@ TRACE_EVENT(thermal_power_cpu_limit,
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),
u32 dynamic_power, u32 static_power, u32 power),
TP_ARGS(cdev, status, freq, dynamic_power, static_power),
TP_ARGS(cdev, status, freq, dynamic_power, static_power, power),
TP_STRUCT__entry(
__string(type, cdev->type )
@ -161,6 +161,7 @@ TRACE_EVENT(thermal_power_devfreq_get_power,
__field(u32, load )
__field(u32, dynamic_power )
__field(u32, static_power )
__field(u32, power)
),
TP_fast_assign(
@ -169,11 +170,13 @@ TRACE_EVENT(thermal_power_devfreq_get_power,
__entry->load = (100 * status->busy_time) / status->total_time;
__entry->dynamic_power = dynamic_power;
__entry->static_power = static_power;
__entry->power = power;
),
TP_printk("type=%s freq=%lu load=%u dynamic_power=%u static_power=%u",
TP_printk("type=%s freq=%lu load=%u dynamic_power=%u static_power=%u power=%u",
__get_str(type), __entry->freq,
__entry->load, __entry->dynamic_power, __entry->static_power)
__entry->load, __entry->dynamic_power, __entry->static_power,
__entry->power)
);
TRACE_EVENT(thermal_power_devfreq_limit,