aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/xburst/patches-2.6.35/057-hwmon.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/xburst/patches-2.6.35/057-hwmon.patch')
-rw-r--r--target/linux/xburst/patches-2.6.35/057-hwmon.patch283
1 files changed, 0 insertions, 283 deletions
diff --git a/target/linux/xburst/patches-2.6.35/057-hwmon.patch b/target/linux/xburst/patches-2.6.35/057-hwmon.patch
deleted file mode 100644
index e17758d260..0000000000
--- a/target/linux/xburst/patches-2.6.35/057-hwmon.patch
+++ /dev/null
@@ -1,283 +0,0 @@
-From 548ab33dc0bd3c824e6002936ae0931158658a19 Mon Sep 17 00:00:00 2001
-From: Lars-Peter Clausen <lars@metafoo.de>
-Date: Sat, 19 Jun 2010 18:32:58 +0000
-Subject: [PATCH] HWMON: Add JZ4740 ADC driver
-
-Add support for reading the ADCIN pin of the ADC unit on JZ4740 SoCs.
-
-Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
-Cc: lm-sensors@lm-sensors.org
-Acked-by: Jean Delvare <khali@linux-fr.org>
-Cc: linux-mips@linux-mips.org
-Cc: linux-kernel@vger.kernel.org
-Patchwork: https://patchwork.linux-mips.org/patch/1425/
-Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
----
- drivers/hwmon/Kconfig | 10 ++
- drivers/hwmon/Makefile | 1 +
- drivers/hwmon/jz4740-hwmon.c | 230 ++++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 241 insertions(+), 0 deletions(-)
- create mode 100644 drivers/hwmon/jz4740-hwmon.c
-
---- a/drivers/hwmon/Kconfig
-+++ b/drivers/hwmon/Kconfig
-@@ -446,6 +446,16 @@ 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 build as a module. If so, the module will be
-+ called jz4740-hwmon.
-+
- config SENSORS_LM63
- tristate "National Semiconductor LM63 and LM64"
- depends on I2C
---- a/drivers/hwmon/Makefile
-+++ b/drivers/hwmon/Makefile
-@@ -55,6 +55,7 @@ obj-$(CONFIG_SENSORS_I5K_AMB) += i5k_amb
- obj-$(CONFIG_SENSORS_IBMAEM) += ibmaem.o
- obj-$(CONFIG_SENSORS_IBMPEX) += ibmpex.o
- obj-$(CONFIG_SENSORS_IT87) += it87.o
-+obj-$(CONFIG_SENSORS_JZ4740) += jz4740-hwmon.o
- obj-$(CONFIG_SENSORS_K8TEMP) += k8temp.o
- obj-$(CONFIG_SENSORS_K10TEMP) += k10temp.o
- obj-$(CONFIG_SENSORS_LIS3LV02D) += lis3lv02d.o hp_accel.o
---- /dev/null
-+++ b/drivers/hwmon/jz4740-hwmon.c
-@@ -0,0 +1,230 @@
-+/*
-+ * Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de>
-+ * JZ4740 SoC HWMON driver
-+ *
-+ * This program is free software; you can redistribute it and/or modify it
-+ * under the terms of the GNU General Public License as published by the
-+ * Free Software Foundation; either version 2 of the License, or (at your
-+ * option) any later version.
-+ *
-+ * You should have received a copy of the GNU General Public License along
-+ * with this program; if not, write to the Free Software Foundation, Inc.,
-+ * 675 Mass Ave, Cambridge, MA 02139, USA.
-+ *
-+ */
-+
-+#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/completion.h>
-+#include <linux/mfd/core.h>
-+
-+#include <linux/hwmon.h>
-+
-+struct jz4740_hwmon {
-+ struct resource *mem;
-+ void __iomem *base;
-+
-+ int irq;
-+
-+ struct mfd_cell *cell;
-+ struct device *hwmon;
-+
-+ struct completion read_completion;
-+
-+ struct mutex lock;
-+};
-+
-+static ssize_t jz4740_hwmon_show_name(struct device *dev,
-+ struct device_attribute *dev_attr, char *buf)
-+{
-+ return sprintf(buf, "jz4740\n");
-+}
-+
-+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 jz4740_hwmon_read_adcin(struct device *dev,
-+ struct device_attribute *dev_attr, char *buf)
-+{
-+ struct jz4740_hwmon *hwmon = dev_get_drvdata(dev);
-+ struct completion *completion = &hwmon->read_completion;
-+ unsigned long t;
-+ unsigned long val;
-+ int ret;
-+
-+ mutex_lock(&hwmon->lock);
-+
-+ INIT_COMPLETION(*completion);
-+
-+ enable_irq(hwmon->irq);
-+ hwmon->cell->enable(to_platform_device(dev));
-+
-+ 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(to_platform_device(dev));
-+ disable_irq(hwmon->irq);
-+
-+ mutex_unlock(&hwmon->lock);
-+
-+ return ret;
-+}
-+
-+static DEVICE_ATTR(name, S_IRUGO, jz4740_hwmon_show_name, NULL);
-+static DEVICE_ATTR(in0_input, S_IRUGO, jz4740_hwmon_read_adcin, NULL);
-+
-+static struct attribute *jz4740_hwmon_attributes[] = {
-+ &dev_attr_name.attr,
-+ &dev_attr_in0_input.attr,
-+ NULL
-+};
-+
-+static const struct attribute_group jz4740_hwmon_attr_group = {
-+ .attrs = jz4740_hwmon_attributes,
-+};
-+
-+static int __devinit jz4740_hwmon_probe(struct platform_device *pdev)
-+{
-+ int ret;
-+ struct jz4740_hwmon *hwmon;
-+
-+ hwmon = kmalloc(sizeof(*hwmon), GFP_KERNEL);
-+ if (!hwmon) {
-+ dev_err(&pdev->dev, "Failed to allocate driver structure\n");
-+ return -ENOMEM;
-+ }
-+
-+ hwmon->cell = pdev->dev.platform_data;
-+
-+ hwmon->irq = platform_get_irq(pdev, 0);
-+ if (hwmon->irq < 0) {
-+ ret = hwmon->irq;
-+ dev_err(&pdev->dev, "Failed to get platform irq: %d\n", ret);
-+ goto err_free;
-+ }
-+
-+ hwmon->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+ if (!hwmon->mem) {
-+ ret = -ENOENT;
-+ dev_err(&pdev->dev, "Failed to get platform mmio resource\n");
-+ goto err_free;
-+ }
-+
-+ hwmon->mem = request_mem_region(hwmon->mem->start,
-+ resource_size(hwmon->mem), pdev->name);
-+ if (!hwmon->mem) {
-+ ret = -EBUSY;
-+ dev_err(&pdev->dev, "Failed to request mmio memory region\n");
-+ goto err_free;
-+ }
-+
-+ hwmon->base = ioremap_nocache(hwmon->mem->start,
-+ resource_size(hwmon->mem));
-+ if (!hwmon->base) {
-+ ret = -EBUSY;
-+ dev_err(&pdev->dev, "Failed to ioremap mmio memory\n");
-+ goto err_release_mem_region;
-+ }
-+
-+ init_completion(&hwmon->read_completion);
-+ mutex_init(&hwmon->lock);
-+
-+ platform_set_drvdata(pdev, hwmon);
-+
-+ ret = request_irq(hwmon->irq, jz4740_hwmon_irq, 0, pdev->name, hwmon);
-+ if (ret) {
-+ dev_err(&pdev->dev, "Failed to request irq: %d\n", ret);
-+ goto err_iounmap;
-+ }
-+ disable_irq(hwmon->irq);
-+
-+ ret = sysfs_create_group(&pdev->dev.kobj, &jz4740_hwmon_attr_group);
-+ if (ret) {
-+ dev_err(&pdev->dev, "Failed to create sysfs group: %d\n", ret);
-+ goto err_free_irq;
-+ }
-+
-+ hwmon->hwmon = hwmon_device_register(&pdev->dev);
-+ if (IS_ERR(hwmon->hwmon)) {
-+ ret = PTR_ERR(hwmon->hwmon);
-+ goto err_remove_file;
-+ }
-+
-+ return 0;
-+
-+err_remove_file:
-+ sysfs_remove_group(&pdev->dev.kobj, &jz4740_hwmon_attr_group);
-+err_free_irq:
-+ free_irq(hwmon->irq, hwmon);
-+err_iounmap:
-+ platform_set_drvdata(pdev, NULL);
-+ iounmap(hwmon->base);
-+err_release_mem_region:
-+ release_mem_region(hwmon->mem->start, resource_size(hwmon->mem));
-+err_free:
-+ kfree(hwmon);
-+
-+ return ret;
-+}
-+
-+static int __devexit jz4740_hwmon_remove(struct platform_device *pdev)
-+{
-+ struct jz4740_hwmon *hwmon = platform_get_drvdata(pdev);
-+
-+ hwmon_device_unregister(hwmon->hwmon);
-+ sysfs_remove_group(&pdev->dev.kobj, &jz4740_hwmon_attr_group);
-+
-+ free_irq(hwmon->irq, hwmon);
-+
-+ iounmap(hwmon->base);
-+ release_mem_region(hwmon->mem->start, resource_size(hwmon->mem));
-+
-+ platform_set_drvdata(pdev, NULL);
-+ kfree(hwmon);
-+
-+ return 0;
-+}
-+
-+struct platform_driver jz4740_hwmon_driver = {
-+ .probe = jz4740_hwmon_probe,
-+ .remove = __devexit_p(jz4740_hwmon_remove),
-+ .driver = {
-+ .name = "jz4740-hwmon",
-+ .owner = THIS_MODULE,
-+ },
-+};
-+
-+static int __init jz4740_hwmon_init(void)
-+{
-+ return platform_driver_register(&jz4740_hwmon_driver);
-+}
-+module_init(jz4740_hwmon_init);
-+
-+static void __exit jz4740_hwmon_exit(void)
-+{
-+ platform_driver_unregister(&jz4740_hwmon_driver);
-+}
-+module_exit(jz4740_hwmon_exit);
-+
-+MODULE_DESCRIPTION("JZ4740 SoC HWMON driver");
-+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
-+MODULE_LICENSE("GPL");
-+MODULE_ALIAS("platform:jz4740-hwmon");
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-07 10:08:23 +0000