hwmon: Drop obsolete JZ4740 driver (d2027420) · Commits · 戴 / test

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");

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