hwmon: Drop obsolete JZ4740 driver

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>

drivers/hwmon/Kconfig

@@ -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

drivers/hwmon/Makefile

@@ -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

drivers/hwmon/jz4740-hwmon.c

-// 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");