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sunxi: backport thermal sensor driver from upstream linux

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(cherry picked from commit 0d6e831f2c)
This commit is contained in:
AmadeusGhost 2021-02-10 12:20:23 +08:00 committed by Tianling Shen
parent eb0d7ca36c
commit 04af44787e
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GPG Key ID: 6850B6345C862176
9 changed files with 1062 additions and 0 deletions
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1
target/linux/sunxi/config-5.4
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@ -536,6 +536,7 @@ CONFIG_SUN8I_DE2_CCU=y
CONFIG_SUN8I_H3_CCU=y
CONFIG_SUN8I_R40_CCU=y
CONFIG_SUN8I_R_CCU=y
CONFIG_SUN8I_THERMAL=y
CONFIG_SUN8I_V3S_CCU=y
CONFIG_SUN9I_A80_CCU=y
CONFIG_SUNXI_CCU=y

1
target/linux/sunxi/cortexa8/config-5.4
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@ -17,4 +17,5 @@ CONFIG_PGTABLE_LEVELS=2
# CONFIG_PINCTRL_SUN50I_H6_R is not set
# CONFIG_SPI_SUN6I is not set
# CONFIG_SUN8I_A83T_CCU is not set
# CONFIG_SUN8I_THERMAL is not set
CONFIG_UNWINDER_ARM=y

654
target/linux/sunxi/files-5.4/drivers/thermal/sun8i_thermal.c Normal file
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@ -0,0 +1,654 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Thermal sensor driver for Allwinner SOC
* Copyright (C) 2019 Yangtao Li
*
* Based on the work of Icenowy Zheng <icenowy@aosc.io>
* Based on the work of Ondrej Jirman <megous@megous.com>
* Based on the work of Josef Gajdusek <atx@atx.name>
*/
#include <linux/bitmap.h>
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/nvmem-consumer.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/reset.h>
#include <linux/slab.h>
#include <linux/thermal.h>
#include "thermal_hwmon.h"
#define MAX_SENSOR_NUM 4
#define FT_TEMP_MASK GENMASK(11, 0)
#define TEMP_CALIB_MASK GENMASK(11, 0)
#define CALIBRATE_DEFAULT 0x800
#define SUN8I_THS_CTRL0 0x00
#define SUN8I_THS_CTRL2 0x40
#define SUN8I_THS_IC 0x44
#define SUN8I_THS_IS 0x48
#define SUN8I_THS_MFC 0x70
#define SUN8I_THS_TEMP_CALIB 0x74
#define SUN8I_THS_TEMP_DATA 0x80
#define SUN50I_THS_CTRL0 0x00
#define SUN50I_H6_THS_ENABLE 0x04
#define SUN50I_H6_THS_PC 0x08
#define SUN50I_H6_THS_DIC 0x10
#define SUN50I_H6_THS_DIS 0x20
#define SUN50I_H6_THS_MFC 0x30
#define SUN50I_H6_THS_TEMP_CALIB 0xa0
#define SUN50I_H6_THS_TEMP_DATA 0xc0
#define SUN8I_THS_CTRL0_T_ACQ0(x) (GENMASK(15, 0) & (x))
#define SUN8I_THS_CTRL2_T_ACQ1(x) ((GENMASK(15, 0) & (x)) << 16)
#define SUN8I_THS_DATA_IRQ_STS(x) BIT(x + 8)
#define SUN50I_THS_CTRL0_T_ACQ(x) ((GENMASK(15, 0) & (x)) << 16)
#define SUN50I_THS_FILTER_EN BIT(2)
#define SUN50I_THS_FILTER_TYPE(x) (GENMASK(1, 0) & (x))
#define SUN50I_H6_THS_PC_TEMP_PERIOD(x) ((GENMASK(19, 0) & (x)) << 12)
#define SUN50I_H6_THS_DATA_IRQ_STS(x) BIT(x)
/* millidegree celsius */
struct tsensor {
struct ths_device *tmdev;
struct thermal_zone_device *tzd;
int id;
};
struct ths_thermal_chip {
bool has_mod_clk;
bool has_bus_clk_reset;
int sensor_num;
int offset;
int scale;
int ft_deviation;
int temp_data_base;
int (*calibrate)(struct ths_device *tmdev,
u16 *caldata, int callen);
int (*init)(struct ths_device *tmdev);
unsigned long (*irq_ack)(struct ths_device *tmdev);
int (*calc_temp)(struct ths_device *tmdev,
int id, int reg);
};
struct ths_device {
const struct ths_thermal_chip *chip;
struct device *dev;
struct regmap *regmap;
struct reset_control *reset;
struct clk *bus_clk;
struct clk *mod_clk;
struct tsensor sensor[MAX_SENSOR_NUM];
};
/* Temp Unit: millidegree Celsius */
static int sun8i_ths_calc_temp(struct ths_device *tmdev,
int id, int reg)
{
return tmdev->chip->offset - (reg * tmdev->chip->scale / 10);
}
static int sun50i_h5_calc_temp(struct ths_device *tmdev,
int id, int reg)
{
if (reg >= 0x500)
return -1191 * reg / 10 + 223000;
else if (!id)
return -1452 * reg / 10 + 259000;
else
return -1590 * reg / 10 + 276000;
}
static int sun8i_ths_get_temp(void *data, int *temp)
{
struct tsensor *s = data;
struct ths_device *tmdev = s->tmdev;
int val = 0;
regmap_read(tmdev->regmap, tmdev->chip->temp_data_base +
0x4 * s->id, &val);
/* ths have no data yet */
if (!val)
return -EAGAIN;
*temp = tmdev->chip->calc_temp(tmdev, s->id, val);
/*
* According to the original sdk, there are some platforms(rarely)
* that add a fixed offset value after calculating the temperature
* value. We can't simply put it on the formula for calculating the
* temperature above, because the formula for calculating the
* temperature above is also used when the sensor is calibrated. If
* do this, the correct calibration formula is hard to know.
*/
*temp += tmdev->chip->ft_deviation;
return 0;
}
static const struct thermal_zone_of_device_ops ths_ops = {
.get_temp = sun8i_ths_get_temp,
};
static const struct regmap_config config = {
.reg_bits = 32,
.val_bits = 32,
.reg_stride = 4,
.fast_io = true,
.max_register = 0xfc,
};
static unsigned long sun8i_h3_irq_ack(struct ths_device *tmdev)
{
unsigned long irq_bitmap = 0;
int i, state;
regmap_read(tmdev->regmap, SUN8I_THS_IS, &state);
for (i = 0; i < tmdev->chip->sensor_num; i++) {
if (state & SUN8I_THS_DATA_IRQ_STS(i)) {
regmap_write(tmdev->regmap, SUN8I_THS_IS,
SUN8I_THS_DATA_IRQ_STS(i));
bitmap_set(&irq_bitmap, i, 1);
}
}
return irq_bitmap;
}
static unsigned long sun50i_h6_irq_ack(struct ths_device *tmdev)
{
unsigned long irq_bitmap = 0;
int i, state;
regmap_read(tmdev->regmap, SUN50I_H6_THS_DIS, &state);
for (i = 0; i < tmdev->chip->sensor_num; i++) {
if (state & SUN50I_H6_THS_DATA_IRQ_STS(i)) {
regmap_write(tmdev->regmap, SUN50I_H6_THS_DIS,
SUN50I_H6_THS_DATA_IRQ_STS(i));
bitmap_set(&irq_bitmap, i, 1);
}
}
return irq_bitmap;
}
static irqreturn_t sun8i_irq_thread(int irq, void *data)
{
struct ths_device *tmdev = data;
unsigned long irq_bitmap = tmdev->chip->irq_ack(tmdev);
int i;
for_each_set_bit(i, &irq_bitmap, tmdev->chip->sensor_num) {
thermal_zone_device_update(tmdev->sensor[i].tzd,
THERMAL_EVENT_UNSPECIFIED);
}
return IRQ_HANDLED;
}
static int sun8i_h3_ths_calibrate(struct ths_device *tmdev,
u16 *caldata, int callen)
{
int i;
if (!caldata[0] || callen < 2 * tmdev->chip->sensor_num)
return -EINVAL;
for (i = 0; i < tmdev->chip->sensor_num; i++) {
int offset = (i % 2) << 4;
regmap_update_bits(tmdev->regmap,
SUN8I_THS_TEMP_CALIB + (4 * (i >> 1)),
0xfff << offset,
caldata[i] << offset);
}
return 0;
}
static int sun50i_h6_ths_calibrate(struct ths_device *tmdev,
u16 *caldata, int callen)
{
struct device *dev = tmdev->dev;
int i, ft_temp;
if (!caldata[0] || callen < 2 + 2 * tmdev->chip->sensor_num)
return -EINVAL;
/*
* efuse layout:
*
* 0 11 16 32
* +-------+-------+-------+
* |temp| |sensor0|sensor1|
* +-------+-------+-------+
*
* The calibration data on the H6 is the ambient temperature and
* sensor values that are filled during the factory test stage.
*
* The unit of stored FT temperature is 0.1 degreee celusis.
*
* We need to calculate a delta between measured and caluclated
* register values and this will become a calibration offset.
*/
ft_temp = (caldata[0] & FT_TEMP_MASK) * 100;
for (i = 0; i < tmdev->chip->sensor_num; i++) {
int sensor_reg = caldata[i + 1] & TEMP_CALIB_MASK;
int cdata, offset;
int sensor_temp = tmdev->chip->calc_temp(tmdev, i, sensor_reg);
/*
* Calibration data is CALIBRATE_DEFAULT - (calculated
* temperature from sensor reading at factory temperature
* minus actual factory temperature) * 14.88 (scale from
* temperature to register values)
*/
cdata = CALIBRATE_DEFAULT -
((sensor_temp - ft_temp) * 10 / tmdev->chip->scale);
if (cdata & ~TEMP_CALIB_MASK) {
/*
* Calibration value more than 12-bit, but calibration
* register is 12-bit. In this case, ths hardware can
* still work without calibration, although the data
* won't be so accurate.
*/
dev_warn(dev, "sensor%d is not calibrated.\n", i);
continue;
}
offset = (i % 2) * 16;
regmap_update_bits(tmdev->regmap,
SUN50I_H6_THS_TEMP_CALIB + (i / 2 * 4),
0xfff << offset,
cdata << offset);
}
return 0;
}
static int sun8i_ths_calibrate(struct ths_device *tmdev)
{
struct nvmem_cell *calcell;
struct device *dev = tmdev->dev;
u16 *caldata;
size_t callen;
int ret = 0;
calcell = devm_nvmem_cell_get(dev, "calibration");
if (IS_ERR(calcell)) {
if (PTR_ERR(calcell) == -EPROBE_DEFER)
return -EPROBE_DEFER;
/*
* Even if the external calibration data stored in sid is
* not accessible, the THS hardware can still work, although
* the data won't be so accurate.
*
* The default value of calibration register is 0x800 for
* every sensor, and the calibration value is usually 0x7xx
* or 0x8xx, so they won't be away from the default value
* for a lot.
*
* So here we do not return error if the calibartion data is
* not available, except the probe needs deferring.
*/
goto out;
}
caldata = nvmem_cell_read(calcell, &callen);
if (IS_ERR(caldata)) {
ret = PTR_ERR(caldata);
goto out;
}
tmdev->chip->calibrate(tmdev, caldata, callen);
kfree(caldata);
out:
return ret;
}
static int sun8i_ths_resource_init(struct ths_device *tmdev)
{
struct device *dev = tmdev->dev;
struct platform_device *pdev = to_platform_device(dev);
void __iomem *base;
int ret;
base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(base))
return PTR_ERR(base);
tmdev->regmap = devm_regmap_init_mmio(dev, base, &config);
if (IS_ERR(tmdev->regmap))
return PTR_ERR(tmdev->regmap);
if (tmdev->chip->has_bus_clk_reset) {
tmdev->reset = devm_reset_control_get(dev, NULL);
if (IS_ERR(tmdev->reset))
return PTR_ERR(tmdev->reset);
tmdev->bus_clk = devm_clk_get(&pdev->dev, "bus");
if (IS_ERR(tmdev->bus_clk))
return PTR_ERR(tmdev->bus_clk);
}
if (tmdev->chip->has_mod_clk) {
tmdev->mod_clk = devm_clk_get(&pdev->dev, "mod");
if (IS_ERR(tmdev->mod_clk))
return PTR_ERR(tmdev->mod_clk);
}
ret = reset_control_deassert(tmdev->reset);
if (ret)
return ret;
ret = clk_prepare_enable(tmdev->bus_clk);
if (ret)
goto assert_reset;
ret = clk_set_rate(tmdev->mod_clk, 24000000);
if (ret)
goto bus_disable;
ret = clk_prepare_enable(tmdev->mod_clk);
if (ret)
goto bus_disable;
ret = sun8i_ths_calibrate(tmdev);
if (ret)
goto mod_disable;
return 0;
mod_disable:
clk_disable_unprepare(tmdev->mod_clk);
bus_disable:
clk_disable_unprepare(tmdev->bus_clk);
assert_reset:
reset_control_assert(tmdev->reset);
return ret;
}
static int sun8i_h3_thermal_init(struct ths_device *tmdev)
{
int val;
/* average over 4 samples */
regmap_write(tmdev->regmap, SUN8I_THS_MFC,
SUN50I_THS_FILTER_EN |
SUN50I_THS_FILTER_TYPE(1));
/*
* clkin = 24MHz
* filter_samples = 4
* period = 0.25s
*
* x = period * clkin / 4096 / filter_samples - 1
* = 365
*/
val = GENMASK(7 + tmdev->chip->sensor_num, 8);
regmap_write(tmdev->regmap, SUN8I_THS_IC,
SUN50I_H6_THS_PC_TEMP_PERIOD(365) | val);
/*
* T_acq = 20us
* clkin = 24MHz
*
* x = T_acq * clkin - 1
* = 479
*/
regmap_write(tmdev->regmap, SUN8I_THS_CTRL0,
SUN8I_THS_CTRL0_T_ACQ0(479));
val = GENMASK(tmdev->chip->sensor_num - 1, 0);
regmap_write(tmdev->regmap, SUN8I_THS_CTRL2,
SUN8I_THS_CTRL2_T_ACQ1(479) | val);
return 0;
}
/*
* Without this undocummented value, the returned temperatures would
* be higher than real ones by about 20C.
*/
#define SUN50I_H6_CTRL0_UNK 0x0000002f
static int sun50i_h6_thermal_init(struct ths_device *tmdev)
{
int val;
/*
* T_acq = 20us
* clkin = 24MHz
*
* x = T_acq * clkin - 1
* = 479
*/
regmap_write(tmdev->regmap, SUN50I_THS_CTRL0,
SUN50I_H6_CTRL0_UNK | SUN50I_THS_CTRL0_T_ACQ(479));
/* average over 4 samples */
regmap_write(tmdev->regmap, SUN50I_H6_THS_MFC,
SUN50I_THS_FILTER_EN |
SUN50I_THS_FILTER_TYPE(1));
/*
* clkin = 24MHz
* filter_samples = 4
* period = 0.25s
*
* x = period * clkin / 4096 / filter_samples - 1
* = 365
*/
regmap_write(tmdev->regmap, SUN50I_H6_THS_PC,
SUN50I_H6_THS_PC_TEMP_PERIOD(365));
/* enable sensor */
val = GENMASK(tmdev->chip->sensor_num - 1, 0);
regmap_write(tmdev->regmap, SUN50I_H6_THS_ENABLE, val);
/* thermal data interrupt enable */
val = GENMASK(tmdev->chip->sensor_num - 1, 0);
regmap_write(tmdev->regmap, SUN50I_H6_THS_DIC, val);
return 0;
}
static int sun8i_ths_register(struct ths_device *tmdev)
{
int i;
for (i = 0; i < tmdev->chip->sensor_num; i++) {
tmdev->sensor[i].tmdev = tmdev;
tmdev->sensor[i].id = i;
tmdev->sensor[i].tzd =
devm_thermal_zone_of_sensor_register(tmdev->dev,
i,
&tmdev->sensor[i],
&ths_ops);
if (IS_ERR(tmdev->sensor[i].tzd))
return PTR_ERR(tmdev->sensor[i].tzd);
if (devm_thermal_add_hwmon_sysfs(tmdev->sensor[i].tzd))
dev_warn(tmdev->dev,
"Failed to add hwmon sysfs attributes\n");
}
return 0;
}
static int sun8i_ths_probe(struct platform_device *pdev)
{
struct ths_device *tmdev;
struct device *dev = &pdev->dev;
int ret, irq;
tmdev = devm_kzalloc(dev, sizeof(*tmdev), GFP_KERNEL);
if (!tmdev)
return -ENOMEM;
tmdev->dev = dev;
tmdev->chip = of_device_get_match_data(&pdev->dev);
if (!tmdev->chip)
return -EINVAL;
platform_set_drvdata(pdev, tmdev);
ret = sun8i_ths_resource_init(tmdev);
if (ret)
return ret;
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
ret = tmdev->chip->init(tmdev);
if (ret)
return ret;
ret = sun8i_ths_register(tmdev);
if (ret)
return ret;
/*
* Avoid entering the interrupt handler, the thermal device is not
* registered yet, we deffer the registration of the interrupt to
* the end.
*/
ret = devm_request_threaded_irq(dev, irq, NULL,
sun8i_irq_thread,
IRQF_ONESHOT, "ths", tmdev);
if (ret)
return ret;
return 0;
}
static int sun8i_ths_remove(struct platform_device *pdev)
{
struct ths_device *tmdev = platform_get_drvdata(pdev);
clk_disable_unprepare(tmdev->mod_clk);
clk_disable_unprepare(tmdev->bus_clk);
reset_control_assert(tmdev->reset);
return 0;
}
static const struct ths_thermal_chip sun8i_a83t_ths = {
.sensor_num = 3,
.scale = 705,
.offset = 191668,
.temp_data_base = SUN8I_THS_TEMP_DATA,
.calibrate = sun8i_h3_ths_calibrate,
.init = sun8i_h3_thermal_init,
.irq_ack = sun8i_h3_irq_ack,
.calc_temp = sun8i_ths_calc_temp,
};
static const struct ths_thermal_chip sun8i_h3_ths = {
.sensor_num = 1,
.scale = 1211,
.offset = 217000,
.has_mod_clk = true,
.has_bus_clk_reset = true,
.temp_data_base = SUN8I_THS_TEMP_DATA,
.calibrate = sun8i_h3_ths_calibrate,
.init = sun8i_h3_thermal_init,
.irq_ack = sun8i_h3_irq_ack,
.calc_temp = sun8i_ths_calc_temp,
};
static const struct ths_thermal_chip sun8i_r40_ths = {
.sensor_num = 2,
.offset = 251086,
.scale = 1130,
.has_mod_clk = true,
.has_bus_clk_reset = true,
.temp_data_base = SUN8I_THS_TEMP_DATA,
.calibrate = sun8i_h3_ths_calibrate,
.init = sun8i_h3_thermal_init,
.irq_ack = sun8i_h3_irq_ack,
.calc_temp = sun8i_ths_calc_temp,
};
static const struct ths_thermal_chip sun50i_a64_ths = {
.sensor_num = 3,
.offset = 260890,
.scale = 1170,
.has_mod_clk = true,
.has_bus_clk_reset = true,
.temp_data_base = SUN8I_THS_TEMP_DATA,
.calibrate = sun8i_h3_ths_calibrate,
.init = sun8i_h3_thermal_init,
.irq_ack = sun8i_h3_irq_ack,
.calc_temp = sun8i_ths_calc_temp,
};
static const struct ths_thermal_chip sun50i_a100_ths = {
.sensor_num = 3,
.has_bus_clk_reset = true,
.ft_deviation = 8000,
.offset = 187744,
.scale = 672,
.temp_data_base = SUN50I_H6_THS_TEMP_DATA,
.calibrate = sun50i_h6_ths_calibrate,
.init = sun50i_h6_thermal_init,
.irq_ack = sun50i_h6_irq_ack,
.calc_temp = sun8i_ths_calc_temp,
};
static const struct ths_thermal_chip sun50i_h5_ths = {
.sensor_num = 2,
.has_mod_clk = true,
.has_bus_clk_reset = true,
.temp_data_base = SUN8I_THS_TEMP_DATA,
.calibrate = sun8i_h3_ths_calibrate,
.init = sun8i_h3_thermal_init,
.irq_ack = sun8i_h3_irq_ack,
.calc_temp = sun50i_h5_calc_temp,
};
static const struct ths_thermal_chip sun50i_h6_ths = {
.sensor_num = 2,
.has_bus_clk_reset = true,
.ft_deviation = 7000,
.offset = 187744,
.scale = 672,
.temp_data_base = SUN50I_H6_THS_TEMP_DATA,
.calibrate = sun50i_h6_ths_calibrate,
.init = sun50i_h6_thermal_init,
.irq_ack = sun50i_h6_irq_ack,
.calc_temp = sun8i_ths_calc_temp,
};
static const struct of_device_id of_ths_match[] = {
{ .compatible = "allwinner,sun8i-a83t-ths", .data = &sun8i_a83t_ths },
{ .compatible = "allwinner,sun8i-h3-ths", .data = &sun8i_h3_ths },
{ .compatible = "allwinner,sun8i-r40-ths", .data = &sun8i_r40_ths },
{ .compatible = "allwinner,sun50i-a64-ths", .data = &sun50i_a64_ths },
{ .compatible = "allwinner,sun50i-a100-ths", .data = &sun50i_a100_ths },
{ .compatible = "allwinner,sun50i-h5-ths", .data = &sun50i_h5_ths },
{ .compatible = "allwinner,sun50i-h6-ths", .data = &sun50i_h6_ths },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, of_ths_match);
static struct platform_driver ths_driver = {
.probe = sun8i_ths_probe,
.remove = sun8i_ths_remove,
.driver = {
.name = "sun8i-thermal",
.of_match_table = of_ths_match,
},
};
module_platform_driver(ths_driver);
MODULE_DESCRIPTION("Thermal sensor driver for Allwinner SOC");
MODULE_LICENSE("GPL v2");

84
target/linux/sunxi/patches-5.4/011-v5.6-thermal_hwmon-Add-devres-wrapper.patch Normal file
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@ -0,0 +1,84 @@
From c7fc403e40b0ea18976a59e968c23439a80809e8 Mon Sep 17 00:00:00 2001
From: Andrey Smirnov <andrew.smirnov@gmail.com>
Date: Tue, 10 Dec 2019 08:41:52 -0800
Subject: [PATCH] thermal_hwmon: Add devres wrapper for
thermal_add_hwmon_sysfs()
Add devres wrapper for thermal_add_hwmon_sysfs() to simplify driver
code.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Tested-by: Lucas Stach <l.stach@pengutronix.de>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Angus Ainslie (Purism) <angus@akkea.ca>
Cc: linux-imx@nxp.com
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20191210164153.10463-12-andrew.smirnov@gmail.com
---
drivers/thermal/thermal_hwmon.c | 28 ++++++++++++++++++++++++++++
drivers/thermal/thermal_hwmon.h | 7 +++++++
2 files changed, 35 insertions(+)
--- a/drivers/thermal/thermal_hwmon.c
+++ b/drivers/thermal/thermal_hwmon.c
@@ -248,3 +248,31 @@ void thermal_remove_hwmon_sysfs(struct t
kfree(hwmon);
}
EXPORT_SYMBOL_GPL(thermal_remove_hwmon_sysfs);
+
+static void devm_thermal_hwmon_release(struct device *dev, void *res)
+{
+ thermal_remove_hwmon_sysfs(*(struct thermal_zone_device **)res);
+}
+
+int devm_thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
+{
+ struct thermal_zone_device **ptr;
+ int ret;
+
+ ptr = devres_alloc(devm_thermal_hwmon_release, sizeof(*ptr),
+ GFP_KERNEL);
+ if (!ptr)
+ return -ENOMEM;
+
+ ret = thermal_add_hwmon_sysfs(tz);
+ if (ret) {
+ devres_free(ptr);
+ return ret;
+ }
+
+ *ptr = tz;
+ devres_add(&tz->device, ptr);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(devm_thermal_add_hwmon_sysfs);
--- a/drivers/thermal/thermal_hwmon.h
+++ b/drivers/thermal/thermal_hwmon.h
@@ -17,6 +17,7 @@
#ifdef CONFIG_THERMAL_HWMON
int thermal_add_hwmon_sysfs(struct thermal_zone_device *tz);
+int devm_thermal_add_hwmon_sysfs(struct thermal_zone_device *tz);
void thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz);
#else
static inline int
@@ -24,6 +25,12 @@ thermal_add_hwmon_sysfs(struct thermal_z
{
return 0;
}
+
+static inline int
+devm_thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
+{
+ return 0;
+}
static inline void
thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)

57
target/linux/sunxi/patches-5.4/012-thermal-drivers-sun8i-Add-thermal-driver.patch Normal file
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@ -0,0 +1,57 @@
From dccc5c3b6f30f27ed0f1bea82221e18face20bef Mon Sep 17 00:00:00 2001
From: Yangtao Li <tiny.windzz@gmail.com>
Date: Thu, 19 Dec 2019 09:28:17 -0800
Subject: [PATCH] thermal/drivers/sun8i: Add thermal driver for
H6/H5/H3/A64/A83T/R40
This patch adds the support for allwinner thermal sensor, within
allwinner SoC. It will register sensors for thermal framework
and use device tree to bind cooling device.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Ondrej Jirman <megous@megous.com>
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20191219172823.1652600-2-anarsoul@gmail.com
---
MAINTAINERS | 8 +
drivers/thermal/Kconfig | 14 +
drivers/thermal/Makefile | 1 +
drivers/thermal/sun8i_thermal.c | 639 ++++++++++++++++++++++++++++++++
4 files changed, 662 insertions(+)
create mode 100644 drivers/thermal/sun8i_thermal.c
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -262,6 +262,20 @@ config SPEAR_THERMAL
Enable this to plug the SPEAr thermal sensor driver into the Linux
thermal framework.
+config SUN8I_THERMAL
+ tristate "Allwinner sun8i thermal driver"
+ depends on ARCH_SUNXI || COMPILE_TEST
+ depends on HAS_IOMEM
+ depends on NVMEM
+ depends on OF
+ depends on RESET_CONTROLLER
+ help
+ Support for the sun8i thermal sensor driver into the Linux thermal
+ framework.
+
+ To compile this driver as a module, choose M here: the
+ module will be called sun8i-thermal.
+
config ROCKCHIP_THERMAL
tristate "Rockchip thermal driver"
depends on ARCH_ROCKCHIP || COMPILE_TEST
--- a/drivers/thermal/Makefile
+++ b/drivers/thermal/Makefile
@@ -31,6 +31,7 @@ thermal_sys-$(CONFIG_DEVFREQ_THERMAL) +=
obj-y += broadcom/
obj-$(CONFIG_THERMAL_MMIO) += thermal_mmio.o
obj-$(CONFIG_SPEAR_THERMAL) += spear_thermal.o
+obj-$(CONFIG_SUN8I_THERMAL) += sun8i_thermal.o
obj-$(CONFIG_ROCKCHIP_THERMAL) += rockchip_thermal.o
obj-$(CONFIG_RCAR_THERMAL) += rcar_thermal.o
obj-$(CONFIG_RCAR_GEN3_THERMAL) += rcar_gen3_thermal.o

59
target/linux/sunxi/patches-5.4/013-ARM-dts-sun8i-h3-Add-thermal-sensor-and-thermal-zones.patch Normal file
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@ -0,0 +1,59 @@
From b37da9c8e62ef8ea14c19d40837dcd5beb8470e6 Mon Sep 17 00:00:00 2001
From: Ondrej Jirman <megous@megous.com>
Date: Thu, 19 Dec 2019 09:28:20 -0800
Subject: [PATCH] ARM: dts: sun8i-h3: Add thermal sensor and thermal zones
There is just one sensor for the CPU.
Signed-off-by: Ondrej Jirman <megous@megous.com>
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
arch/arm/boot/dts/sun8i-h3.dtsi | 20 ++++++++++++++++++++
arch/arm/boot/dts/sunxi-h3-h5.dtsi | 6 ++++++
2 files changed, 26 insertions(+)
--- a/arch/arm/boot/dts/sun8i-h3.dtsi
+++ b/arch/arm/boot/dts/sun8i-h3.dtsi
@@ -186,6 +186,26 @@
assigned-clocks = <&ccu CLK_GPU>;
assigned-clock-rates = <384000000>;
};
+
+ ths: thermal-sensor@1c25000 {
+ compatible = "allwinner,sun8i-h3-ths";
+ reg = <0x01c25000 0x400>;
+ interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
+ resets = <&ccu RST_BUS_THS>;
+ clocks = <&ccu CLK_BUS_THS>, <&ccu CLK_THS>;
+ clock-names = "bus", "mod";
+ nvmem-cells = <&ths_calibration>;
+ nvmem-cell-names = "calibration";
+ #thermal-sensor-cells = <0>;
+ };
+ };
+
+ thermal-zones {
+ cpu_thermal: cpu-thermal {
+ polling-delay-passive = <0>;
+ polling-delay = <0>;
+ thermal-sensors = <&ths 0>;
+ };
};
};
--- a/arch/arm/boot/dts/sunxi-h3-h5.dtsi
+++ b/arch/arm/boot/dts/sunxi-h3-h5.dtsi
@@ -230,6 +230,12 @@
sid: eeprom@1c14000 {
/* compatible is in per SoC .dtsi file */
reg = <0x1c14000 0x400>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ ths_calibration: thermal-sensor-calibration@34 {
+ reg = <0x34 4>;
+ };
};
usb_otg: usb@1c19000 {

66
target/linux/sunxi/patches-5.4/014-ARM-dts-sun8i-h3-Add-thermal-trip-points-cooling-maps.patch Normal file
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@ -0,0 +1,66 @@
From 7ad9f3d0cb2f2b886c068f99e791bd41ceb0677a Mon Sep 17 00:00:00 2001
From: Ondrej Jirman <megous@megous.com>
Date: Mon, 24 Feb 2020 17:54:46 +0100
Subject: [PATCH] ARM: dts: sun8i-h3: Add thermal trip points/cooling maps
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This enables passive cooling by down-regulating CPU voltage
and frequency.
For trip points, I used a slightly lowered values from the BSP
code. The critical temperature of 110°C from BSP code seemed
like a lot, so I rounded it off to 100°C.
The critical trip point value is 30°C above the maximum recommended
ambient temperature (70°C) for the SoC from the datasheet, so there's
some headroom even at such a high ambient temperature.
Signed-off-by: Ondrej Jirman <megous@megous.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
arch/arm/boot/dts/sun8i-h3.dtsi | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
--- a/arch/arm/boot/dts/sun8i-h3.dtsi
+++ b/arch/arm/boot/dts/sun8i-h3.dtsi
@@ -41,6 +41,7 @@
*/
#include "sunxi-h3-h5.dtsi"
+#include <dt-bindings/thermal/thermal.h>
/ {
cpu0_opp_table: opp_table0 {
@@ -205,6 +206,30 @@
polling-delay-passive = <0>;
polling-delay = <0>;
thermal-sensors = <&ths 0>;
+
+ trips {
+ cpu_hot: cpu-hot {
+ temperature = <80000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+
+ cpu_very_hot: cpu-very-hot {
+ temperature = <100000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+ };
+
+ cooling-maps {
+ cpu-hot-limit {
+ trip = <&cpu_hot>;
+ cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};
};
};

50
target/linux/sunxi/patches-5.4/015-arm64-dts-allwinner-h5-Add-thermal-sensor-and-thermal.patch Normal file
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@ -0,0 +1,50 @@
From 9ad42557109a9db9ca16964352c3c045a775b018 Mon Sep 17 00:00:00 2001
From: Ondrej Jirman <megous@megous.com>
Date: Thu, 19 Dec 2019 09:28:21 -0800
Subject: [PATCH] arm64: dts: allwinner: h5: Add thermal sensor and thermal
zones
There are two sensors, one for CPU, one for GPU.
Signed-off-by: Ondrej Jirman <megous@megous.com>
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi | 26 ++++++++++++++++++++
1 file changed, 26 insertions(+)
--- a/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi
@@ -174,6 +174,32 @@
assigned-clocks = <&ccu CLK_GPU>;
assigned-clock-rates = <384000000>;
};
+
+ ths: thermal-sensor@1c25000 {
+ compatible = "allwinner,sun50i-h5-ths";
+ reg = <0x01c25000 0x400>;
+ interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
+ resets = <&ccu RST_BUS_THS>;
+ clocks = <&ccu CLK_BUS_THS>, <&ccu CLK_THS>;
+ clock-names = "bus", "mod";
+ nvmem-cells = <&ths_calibration>;
+ nvmem-cell-names = "calibration";
+ #thermal-sensor-cells = <1>;
+ };
+ };
+
+ thermal-zones {
+ cpu_thermal: cpu-thermal {
+ polling-delay-passive = <0>;
+ polling-delay = <0>;
+ thermal-sensors = <&ths 0>;
+ };
+
+ gpu_thermal {
+ polling-delay-passive = <0>;
+ polling-delay = <0>;
+ thermal-sensors = <&ths 1>;
+ };
};
};

90
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@ -0,0 +1,90 @@
From d04f7bc8842c0d9951a5740480f864a4f82d6b63 Mon Sep 17 00:00:00 2001
From: Chen-Yu Tsai <wens@csie.org>
Date: Sat, 18 Jul 2020 00:00:50 +0800
Subject: [PATCH] arm64: dts: allwinner: h5: Add trip and cooling maps to CPU
thermal zones
This enables passive cooling by down-regulating CPU voltage and frequency.
The trip points were copied from the H3.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20200717160053.31191-6-wens@kernel.org
---
arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi | 30 ++++++++++++++++++++
1 file changed, 30 insertions(+)
--- a/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi
@@ -42,6 +42,8 @@
#include <arm/sunxi-h3-h5.dtsi>
+#include <dt-bindings/thermal/thermal.h>
+
/ {
cpus {
#address-cells = <1>;
@@ -54,6 +56,7 @@
enable-method = "psci";
clocks = <&ccu CLK_CPUX>;
clock-latency-ns = <244144>; /* 8 32k periods */
+ #cooling-cells = <2>;
};
cpu1: cpu@1 {
@@ -63,6 +66,7 @@
enable-method = "psci";
clocks = <&ccu CLK_CPUX>;
clock-latency-ns = <244144>; /* 8 32k periods */
+ #cooling-cells = <2>;
};
cpu2: cpu@2 {
@@ -72,6 +76,7 @@
enable-method = "psci";
clocks = <&ccu CLK_CPUX>;
clock-latency-ns = <244144>; /* 8 32k periods */
+ #cooling-cells = <2>;
};
cpu3: cpu@3 {
@@ -81,6 +86,7 @@
enable-method = "psci";
clocks = <&ccu CLK_CPUX>;
clock-latency-ns = <244144>; /* 8 32k periods */
+ #cooling-cells = <2>;
};
};
@@ -201,6 +207,30 @@
polling-delay-passive = <0>;
polling-delay = <0>;
thermal-sensors = <&ths 0>;
+
+ trips {
+ cpu_hot_trip: cpu-hot {
+ temperature = <80000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+
+ cpu_very_hot_trip: cpu-very-hot {
+ temperature = <100000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+ };
+
+ cooling-maps {
+ cpu-hot-limit {
+ trip = <&cpu_hot_trip>;
+ cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};
gpu_thermal {