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hwmon: Drop obsolete JZ4740 driver

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The JZ4740 boards now use the iio-hwmon driver.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Artur Rojek <contact@artur-rojek.eu>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Paul Burton <paul.burton@mips.com>
This commit is contained in:
Paul Cercueil 2019-07-25 18:02:13 -04:00 committed by Paul Burton
parent aea12071d6
commit d202742058
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GPG key ID: 3EA79FACB57500DD
3 changed files with 0 additions and 146 deletions
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10
drivers/hwmon/Kconfig
View file

@ -660,16 +660,6 @@ config SENSORS_IT87
This driver can also be built as a module. If so, the module
will be called it87.
config SENSORS_JZ4740
tristate "Ingenic JZ4740 SoC ADC driver"
depends on MACH_JZ4740 && MFD_JZ4740_ADC
help
If you say yes here you get support for reading adc values from the ADCIN
pin on Ingenic JZ4740 SoC based boards.
This driver can also be built as a module. If so, the module will be
called jz4740-hwmon.
config SENSORS_JC42
tristate "JEDEC JC42.4 compliant memory module temperature sensors"
depends on I2C

1
drivers/hwmon/Makefile
View file

@ -85,7 +85,6 @@ obj-$(CONFIG_SENSORS_INA2XX) += ina2xx.o
obj-$(CONFIG_SENSORS_INA3221) += ina3221.o
obj-$(CONFIG_SENSORS_IT87) += it87.o
obj-$(CONFIG_SENSORS_JC42) += jc42.o
obj-$(CONFIG_SENSORS_JZ4740) += jz4740-hwmon.o
obj-$(CONFIG_SENSORS_K8TEMP) += k8temp.o
obj-$(CONFIG_SENSORS_K10TEMP) += k10temp.o
obj-$(CONFIG_SENSORS_LINEAGE) += lineage-pem.o

135
drivers/hwmon/jz4740-hwmon.c
View file

@ -1,135 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de>
* JZ4740 SoC HWMON driver
*/
#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <linux/completion.h>
#include <linux/mfd/core.h>
#include <linux/hwmon.h>
struct jz4740_hwmon {
void __iomem *base;
int irq;
const struct mfd_cell *cell;
struct platform_device *pdev;
struct completion read_completion;
struct mutex lock;
};
static irqreturn_t jz4740_hwmon_irq(int irq, void *data)
{
struct jz4740_hwmon *hwmon = data;
complete(&hwmon->read_completion);
return IRQ_HANDLED;
}
static ssize_t in0_input_show(struct device *dev,
struct device_attribute *dev_attr, char *buf)
{
struct jz4740_hwmon *hwmon = dev_get_drvdata(dev);
struct platform_device *pdev = hwmon->pdev;
struct completion *completion = &hwmon->read_completion;
long t;
unsigned long val;
int ret;
mutex_lock(&hwmon->lock);
reinit_completion(completion);
enable_irq(hwmon->irq);
hwmon->cell->enable(pdev);
t = wait_for_completion_interruptible_timeout(completion, HZ);
if (t > 0) {
val = readw(hwmon->base) & 0xfff;
val = (val * 3300) >> 12;
ret = sprintf(buf, "%lu\n", val);
} else {
ret = t ? t : -ETIMEDOUT;
}
hwmon->cell->disable(pdev);
disable_irq(hwmon->irq);
mutex_unlock(&hwmon->lock);
return ret;
}
static DEVICE_ATTR_RO(in0_input);
static struct attribute *jz4740_attrs[] = {
&dev_attr_in0_input.attr,
NULL
};
ATTRIBUTE_GROUPS(jz4740);
static int jz4740_hwmon_probe(struct platform_device *pdev)
{
int ret;
struct device *dev = &pdev->dev;
struct jz4740_hwmon *hwmon;
struct device *hwmon_dev;
hwmon = devm_kzalloc(dev, sizeof(*hwmon), GFP_KERNEL);
if (!hwmon)
return -ENOMEM;
hwmon->cell = mfd_get_cell(pdev);
hwmon->irq = platform_get_irq(pdev, 0);
if (hwmon->irq < 0) {
dev_err(&pdev->dev, "Failed to get platform irq: %d\n",
hwmon->irq);
return hwmon->irq;
}
hwmon->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(hwmon->base))
return PTR_ERR(hwmon->base);
hwmon->pdev = pdev;
init_completion(&hwmon->read_completion);
mutex_init(&hwmon->lock);
ret = devm_request_irq(dev, hwmon->irq, jz4740_hwmon_irq, 0,
pdev->name, hwmon);
if (ret) {
dev_err(&pdev->dev, "Failed to request irq: %d\n", ret);
return ret;
}
disable_irq(hwmon->irq);
hwmon_dev = devm_hwmon_device_register_with_groups(dev, "jz4740", hwmon,
jz4740_groups);
return PTR_ERR_OR_ZERO(hwmon_dev);
}
static struct platform_driver jz4740_hwmon_driver = {
.probe = jz4740_hwmon_probe,
.driver = {
.name = "jz4740-hwmon",
},
};
module_platform_driver(jz4740_hwmon_driver);
MODULE_DESCRIPTION("JZ4740 SoC HWMON driver");
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:jz4740-hwmon");