Unverified Commit d2027420 authored by Paul Cercueil's avatar Paul Cercueil Committed by Paul Burton
Browse files

hwmon: Drop obsolete JZ4740 driver 



The JZ4740 boards now use the iio-hwmon driver.

Signed-off-by: default avatarPaul Cercueil <paul@crapouillou.net>
Tested-by: default avatarArtur Rojek <contact@artur-rojek.eu>
Acked-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarPaul Burton <paul.burton@mips.com>
parent aea12071

drivers/hwmon/Kconfig

+0 −10
Original line number Diff line number Diff line
@@ -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

+0 −1
Original line number Diff line number Diff line
@@ -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

deleted100644 → 0
+0 −135
Original line number Diff line number Diff line 
// 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");