mirror of
https://github.com/torvalds/linux.git
synced 2024-11-22 12:11:40 +00:00
thermal/drivers/zx: Remove zx driver
The zte zx platform is getting removed, so this driver is no longer needed. Cc: Jun Nie <jun.nie@linaro.org> Cc: Shawn Guo <shawnguo@kernel.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20210120162400.4115366-3-arnd@kernel.org
This commit is contained in:
Arnd Bergmann
Daniel Lezcano
parent
8fefe3ce6b
commit
73da3f0cca
@ -1,116 +0,0 @@
|
||||
* ZTE zx2967 family Thermal
|
||||
|
||||
Required Properties:
|
||||
- compatible: should be one of the following.
|
||||
* zte,zx296718-thermal
|
||||
- reg: physical base address of the controller and length of memory mapped
|
||||
region.
|
||||
- clocks : Pairs of phandle and specifier referencing the controller's clocks.
|
||||
- clock-names: "topcrm" for the topcrm clock.
|
||||
"apb" for the apb clock.
|
||||
- #thermal-sensor-cells: must be 0.
|
||||
|
||||
Please note: slope coefficient defined in thermal-zones section need to be
|
||||
multiplied by 1000.
|
||||
|
||||
Example for tempsensor:
|
||||
|
||||
tempsensor: tempsensor@148a000 {
|
||||
compatible = "zte,zx296718-thermal";
|
||||
reg = <0x0148a000 0x20>;
|
||||
clocks = <&topcrm TEMPSENSOR_GATE>, <&audiocrm AUDIO_TS_PCLK>;
|
||||
clock-names = "topcrm", "apb";
|
||||
#thermal-sensor-cells = <0>;
|
||||
};
|
||||
|
||||
Example for cooling device:
|
||||
|
||||
cooling_dev: cooling_dev {
|
||||
cluster0_cooling_dev: cluster0-cooling-dev {
|
||||
#cooling-cells = <2>;
|
||||
cpumask = <0xf>;
|
||||
capacitance = <1500>;
|
||||
};
|
||||
|
||||
cluster1_cooling_dev: cluster1-cooling-dev {
|
||||
#cooling-cells = <2>;
|
||||
cpumask = <0x30>;
|
||||
capacitance = <2000>;
|
||||
};
|
||||
};
|
||||
|
||||
Example for thermal zones:
|
||||
|
||||
thermal-zones {
|
||||
zx296718_thermal: zx296718_thermal {
|
||||
polling-delay-passive = <500>;
|
||||
polling-delay = <1000>;
|
||||
sustainable-power = <6500>;
|
||||
|
||||
thermal-sensors = <&tempsensor 0>;
|
||||
/*
|
||||
* slope need to be multiplied by 1000.
|
||||
*/
|
||||
coefficients = <1951 (-922)>;
|
||||
|
||||
trips {
|
||||
trip0: switch_on_temperature {
|
||||
temperature = <90000>;
|
||||
hysteresis = <2000>;
|
||||
type = "passive";
|
||||
};
|
||||
|
||||
trip1: desired_temperature {
|
||||
temperature = <100000>;
|
||||
hysteresis = <2000>;
|
||||
type = "passive";
|
||||
};
|
||||
|
||||
crit: critical_temperature {
|
||||
temperature = <110000>;
|
||||
hysteresis = <2000>;
|
||||
type = "critical";
|
||||
};
|
||||
};
|
||||
|
||||
cooling-maps {
|
||||
map0 {
|
||||
trip = <&trip0>;
|
||||
cooling-device = <&gpu 2 5>;
|
||||
};
|
||||
|
||||
map1 {
|
||||
trip = <&trip0>;
|
||||
cooling-device = <&cluster0_cooling_dev 1 2>;
|
||||
};
|
||||
|
||||
map2 {
|
||||
trip = <&trip1>;
|
||||
cooling-device = <&cluster0_cooling_dev 1 2>;
|
||||
};
|
||||
|
||||
map3 {
|
||||
trip = <&crit>;
|
||||
cooling-device = <&cluster0_cooling_dev 1 2>;
|
||||
};
|
||||
|
||||
map4 {
|
||||
trip = <&trip0>;
|
||||
cooling-device = <&cluster1_cooling_dev 1 2>;
|
||||
contribution = <9000>;
|
||||
};
|
||||
|
||||
map5 {
|
||||
trip = <&trip1>;
|
||||
cooling-device = <&cluster1_cooling_dev 1 2>;
|
||||
contribution = <4096>;
|
||||
};
|
||||
|
||||
map6 {
|
||||
trip = <&crit>;
|
||||
cooling-device = <&cluster1_cooling_dev 1 2>;
|
||||
contribution = <4096>;
|
||||
};
|
||||
};
|
||||
};
|
||||
};
|
||||
@ -467,14 +467,6 @@ depends on (ARCH_QCOM && OF) || COMPILE_TEST
|
||||
source "drivers/thermal/qcom/Kconfig"
|
||||
endmenu
|
||||
|
||||
config ZX2967_THERMAL
|
||||
tristate "Thermal sensors on zx2967 SoC"
|
||||
depends on ARCH_ZX || COMPILE_TEST
|
||||
help
|
||||
Enable the zx2967 thermal sensors driver, which supports
|
||||
the primitive temperature sensor embedded in zx2967 SoCs.
|
||||
This sensor generates the real time die temperature.
|
||||
|
||||
config UNIPHIER_THERMAL
|
||||
tristate "Socionext UniPhier thermal driver"
|
||||
depends on ARCH_UNIPHIER || COMPILE_TEST
|
||||
|
||||
@ -56,7 +56,6 @@ obj-y += tegra/
|
||||
obj-$(CONFIG_HISI_THERMAL) += hisi_thermal.o
|
||||
obj-$(CONFIG_MTK_THERMAL) += mtk_thermal.o
|
||||
obj-$(CONFIG_GENERIC_ADC_THERMAL) += thermal-generic-adc.o
|
||||
obj-$(CONFIG_ZX2967_THERMAL) += zx2967_thermal.o
|
||||
obj-$(CONFIG_UNIPHIER_THERMAL) += uniphier_thermal.o
|
||||
obj-$(CONFIG_AMLOGIC_THERMAL) += amlogic_thermal.o
|
||||
obj-$(CONFIG_SPRD_THERMAL) += sprd_thermal.o
|
||||
|
||||
@ -1,256 +0,0 @@
|
||||
// SPDX-License-Identifier: GPL-2.0-only
|
||||
/*
|
||||
* ZTE's zx2967 family thermal sensor driver
|
||||
*
|
||||
* Copyright (C) 2017 ZTE Ltd.
|
||||
*
|
||||
* Author: Baoyou Xie <baoyou.xie@linaro.org>
|
||||
*/
|
||||
|
||||
#include <linux/clk.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/iopoll.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/thermal.h>
|
||||
|
||||
/* Power Mode: 0->low 1->high */
|
||||
#define ZX2967_THERMAL_POWER_MODE 0
|
||||
#define ZX2967_POWER_MODE_LOW 0
|
||||
#define ZX2967_POWER_MODE_HIGH 1
|
||||
|
||||
/* DCF Control Register */
|
||||
#define ZX2967_THERMAL_DCF 0x4
|
||||
#define ZX2967_DCF_EN BIT(1)
|
||||
#define ZX2967_DCF_FREEZE BIT(0)
|
||||
|
||||
/* Selection Register */
|
||||
#define ZX2967_THERMAL_SEL 0x8
|
||||
|
||||
/* Control Register */
|
||||
#define ZX2967_THERMAL_CTRL 0x10
|
||||
|
||||
#define ZX2967_THERMAL_READY BIT(12)
|
||||
#define ZX2967_THERMAL_TEMP_MASK GENMASK(11, 0)
|
||||
#define ZX2967_THERMAL_ID_MASK 0x18
|
||||
#define ZX2967_THERMAL_ID 0x10
|
||||
|
||||
#define ZX2967_GET_TEMP_TIMEOUT_US (100 * 1024)
|
||||
|
||||
/**
|
||||
* struct zx2967_thermal_priv - zx2967 thermal sensor private structure
|
||||
* @tzd: struct thermal_zone_device where the sensor is registered
|
||||
* @lock: prevents read sensor in parallel
|
||||
* @clk_topcrm: topcrm clk structure
|
||||
* @clk_apb: apb clk structure
|
||||
* @regs: pointer to base address of the thermal sensor
|
||||
* @dev: struct device pointer
|
||||
*/
|
||||
|
||||
struct zx2967_thermal_priv {
|
||||
struct thermal_zone_device *tzd;
|
||||
struct mutex lock;
|
||||
struct clk *clk_topcrm;
|
||||
struct clk *clk_apb;
|
||||
void __iomem *regs;
|
||||
struct device *dev;
|
||||
};
|
||||
|
||||
static int zx2967_thermal_get_temp(void *data, int *temp)
|
||||
{
|
||||
void __iomem *regs;
|
||||
struct zx2967_thermal_priv *priv = data;
|
||||
u32 val;
|
||||
int ret;
|
||||
|
||||
if (!priv->tzd)
|
||||
return -EAGAIN;
|
||||
|
||||
regs = priv->regs;
|
||||
mutex_lock(&priv->lock);
|
||||
writel_relaxed(ZX2967_POWER_MODE_LOW,
|
||||
regs + ZX2967_THERMAL_POWER_MODE);
|
||||
writel_relaxed(ZX2967_DCF_EN, regs + ZX2967_THERMAL_DCF);
|
||||
|
||||
val = readl_relaxed(regs + ZX2967_THERMAL_SEL);
|
||||
val &= ~ZX2967_THERMAL_ID_MASK;
|
||||
val |= ZX2967_THERMAL_ID;
|
||||
writel_relaxed(val, regs + ZX2967_THERMAL_SEL);
|
||||
|
||||
/*
|
||||
* Must wait for a while, surely it's a bit odd.
|
||||
* otherwise temperature value we got has a few deviation, even if
|
||||
* the THERMAL_READY bit is set.
|
||||
*/
|
||||
usleep_range(100, 300);
|
||||
ret = readx_poll_timeout(readl, regs + ZX2967_THERMAL_CTRL,
|
||||
val, val & ZX2967_THERMAL_READY, 300,
|
||||
ZX2967_GET_TEMP_TIMEOUT_US);
|
||||
if (ret) {
|
||||
dev_err(priv->dev, "Thermal sensor data timeout\n");
|
||||
goto unlock;
|
||||
}
|
||||
|
||||
writel_relaxed(ZX2967_DCF_FREEZE | ZX2967_DCF_EN,
|
||||
regs + ZX2967_THERMAL_DCF);
|
||||
val = readl_relaxed(regs + ZX2967_THERMAL_CTRL)
|
||||
& ZX2967_THERMAL_TEMP_MASK;
|
||||
writel_relaxed(ZX2967_POWER_MODE_HIGH,
|
||||
regs + ZX2967_THERMAL_POWER_MODE);
|
||||
|
||||
/*
|
||||
* Calculate temperature
|
||||
* In dts, slope is multiplied by 1000.
|
||||
*/
|
||||
*temp = DIV_ROUND_CLOSEST(((s32)val + priv->tzd->tzp->offset) * 1000,
|
||||
priv->tzd->tzp->slope);
|
||||
|
||||
unlock:
|
||||
mutex_unlock(&priv->lock);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static const struct thermal_zone_of_device_ops zx2967_of_thermal_ops = {
|
||||
.get_temp = zx2967_thermal_get_temp,
|
||||
};
|
||||
|
||||
static int zx2967_thermal_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct zx2967_thermal_priv *priv;
|
||||
struct resource *res;
|
||||
int ret;
|
||||
|
||||
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
|
||||
if (!priv)
|
||||
return -ENOMEM;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
priv->regs = devm_ioremap_resource(&pdev->dev, res);
|
||||
if (IS_ERR(priv->regs))
|
||||
return PTR_ERR(priv->regs);
|
||||
|
||||
priv->clk_topcrm = devm_clk_get(&pdev->dev, "topcrm");
|
||||
if (IS_ERR(priv->clk_topcrm)) {
|
||||
ret = PTR_ERR(priv->clk_topcrm);
|
||||
dev_err(&pdev->dev, "failed to get topcrm clock: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = clk_prepare_enable(priv->clk_topcrm);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "failed to enable topcrm clock: %d\n",
|
||||
ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
priv->clk_apb = devm_clk_get(&pdev->dev, "apb");
|
||||
if (IS_ERR(priv->clk_apb)) {
|
||||
ret = PTR_ERR(priv->clk_apb);
|
||||
dev_err(&pdev->dev, "failed to get apb clock: %d\n", ret);
|
||||
goto disable_clk_topcrm;
|
||||
}
|
||||
|
||||
ret = clk_prepare_enable(priv->clk_apb);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "failed to enable apb clock: %d\n",
|
||||
ret);
|
||||
goto disable_clk_topcrm;
|
||||
}
|
||||
|
||||
mutex_init(&priv->lock);
|
||||
priv->tzd = thermal_zone_of_sensor_register(&pdev->dev,
|
||||
0, priv, &zx2967_of_thermal_ops);
|
||||
|
||||
if (IS_ERR(priv->tzd)) {
|
||||
ret = PTR_ERR(priv->tzd);
|
||||
dev_err(&pdev->dev, "failed to register sensor: %d\n", ret);
|
||||
goto disable_clk_all;
|
||||
}
|
||||
|
||||
if (priv->tzd->tzp->slope == 0) {
|
||||
thermal_zone_of_sensor_unregister(&pdev->dev, priv->tzd);
|
||||
dev_err(&pdev->dev, "coefficients of sensor is invalid\n");
|
||||
ret = -EINVAL;
|
||||
goto disable_clk_all;
|
||||
}
|
||||
|
||||
priv->dev = &pdev->dev;
|
||||
platform_set_drvdata(pdev, priv);
|
||||
|
||||
return 0;
|
||||
|
||||
disable_clk_all:
|
||||
clk_disable_unprepare(priv->clk_apb);
|
||||
disable_clk_topcrm:
|
||||
clk_disable_unprepare(priv->clk_topcrm);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int zx2967_thermal_exit(struct platform_device *pdev)
|
||||
{
|
||||
struct zx2967_thermal_priv *priv = platform_get_drvdata(pdev);
|
||||
|
||||
thermal_zone_of_sensor_unregister(&pdev->dev, priv->tzd);
|
||||
clk_disable_unprepare(priv->clk_topcrm);
|
||||
clk_disable_unprepare(priv->clk_apb);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id zx2967_thermal_id_table[] = {
|
||||
{ .compatible = "zte,zx296718-thermal" },
|
||||
{}
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, zx2967_thermal_id_table);
|
||||
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
static int zx2967_thermal_suspend(struct device *dev)
|
||||
{
|
||||
struct zx2967_thermal_priv *priv = dev_get_drvdata(dev);
|
||||
|
||||
if (priv && priv->clk_topcrm)
|
||||
clk_disable_unprepare(priv->clk_topcrm);
|
||||
|
||||
if (priv && priv->clk_apb)
|
||||
clk_disable_unprepare(priv->clk_apb);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int zx2967_thermal_resume(struct device *dev)
|
||||
{
|
||||
struct zx2967_thermal_priv *priv = dev_get_drvdata(dev);
|
||||
int error;
|
||||
|
||||
error = clk_prepare_enable(priv->clk_topcrm);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
error = clk_prepare_enable(priv->clk_apb);
|
||||
if (error) {
|
||||
clk_disable_unprepare(priv->clk_topcrm);
|
||||
return error;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
static SIMPLE_DEV_PM_OPS(zx2967_thermal_pm_ops,
|
||||
zx2967_thermal_suspend, zx2967_thermal_resume);
|
||||
|
||||
static struct platform_driver zx2967_thermal_driver = {
|
||||
.probe = zx2967_thermal_probe,
|
||||
.remove = zx2967_thermal_exit,
|
||||
.driver = {
|
||||
.name = "zx2967_thermal",
|
||||
.of_match_table = zx2967_thermal_id_table,
|
||||
.pm = &zx2967_thermal_pm_ops,
|
||||
},
|
||||
};
|
||||
module_platform_driver(zx2967_thermal_driver);
|
||||
|
||||
MODULE_AUTHOR("Baoyou Xie <baoyou.xie@linaro.org>");
|
||||
MODULE_DESCRIPTION("ZTE zx2967 thermal driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
Loading…
Reference in New Issue
Block a user