Linux-libre 4.5-gnu

1 files changed, 0 insertions, 262 deletions

diff --git a/drivers/staging/iio/iio_dummy_evgen.c b/drivers/staging/iio/iio_dummy_evgen.c
deleted file mode 100644
index 9e83f348d..000000000
--- a/drivers/staging/iio/iio_dummy_evgen.c
+++ /dev/null
@@ -1,262 +0,0 @@
-/**
- * Copyright (c) 2011 Jonathan Cameron
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
- *
- * Companion module to the iio simple dummy example driver.
- * The purpose of this is to generate 'fake' event interrupts thus
- * allowing that driver's code to be as close as possible to that of
- * a normal driver talking to hardware.  The approach used here
- * is not intended to be general and just happens to work for this
- * particular use case.
- */
-
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/mutex.h>
-#include <linux/module.h>
-#include <linux/sysfs.h>
-
-#include "iio_dummy_evgen.h"
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-#include <linux/irq_work.h>
-
-/* Fiddly bit of faking and irq without hardware */
-#define IIO_EVENTGEN_NO 10
-
-/**
- * struct iio_dummy_handle_irq - helper struct to simulate interrupt generation
- * @work: irq_work used to run handlers from hardirq context
- * @irq: fake irq line number to trigger an interrupt
- */
-struct iio_dummy_handle_irq {
-	struct irq_work work;
-	int irq;
-};
-
-/**
- * struct iio_dummy_evgen - evgen state
- * @chip: irq chip we are faking
- * @base: base of irq range
- * @enabled: mask of which irqs are enabled
- * @inuse: mask of which irqs are connected
- * @regs: irq regs we are faking
- * @lock: protect the evgen state
- * @handler: helper for a 'hardware-like' interrupt simulation
- */
-struct iio_dummy_eventgen {
-	struct irq_chip chip;
-	int base;
-	bool enabled[IIO_EVENTGEN_NO];
-	bool inuse[IIO_EVENTGEN_NO];
-	struct iio_dummy_regs regs[IIO_EVENTGEN_NO];
-	struct mutex lock;
-	struct iio_dummy_handle_irq handler;
-};
-
-/* We can only ever have one instance of this 'device' */
-static struct iio_dummy_eventgen *iio_evgen;
-static const char *iio_evgen_name = "iio_dummy_evgen";
-
-static void iio_dummy_event_irqmask(struct irq_data *d)
-{
-	struct irq_chip *chip = irq_data_get_irq_chip(d);
-	struct iio_dummy_eventgen *evgen =
-		container_of(chip, struct iio_dummy_eventgen, chip);
-
-	evgen->enabled[d->irq - evgen->base] = false;
-}
-
-static void iio_dummy_event_irqunmask(struct irq_data *d)
-{
-	struct irq_chip *chip = irq_data_get_irq_chip(d);
-	struct iio_dummy_eventgen *evgen =
-		container_of(chip, struct iio_dummy_eventgen, chip);
-
-	evgen->enabled[d->irq - evgen->base] = true;
-}
-
-static void iio_dummy_work_handler(struct irq_work *work)
-{
-	struct iio_dummy_handle_irq *irq_handler;
-
-	irq_handler = container_of(work, struct iio_dummy_handle_irq, work);
-	handle_simple_irq(irq_to_desc(irq_handler->irq));
-}
-
-static int iio_dummy_evgen_create(void)
-{
-	int ret, i;
-
-	iio_evgen = kzalloc(sizeof(*iio_evgen), GFP_KERNEL);
-	if (!iio_evgen)
-		return -ENOMEM;
-
-	iio_evgen->base = irq_alloc_descs(-1, 0, IIO_EVENTGEN_NO, 0);
-	if (iio_evgen->base < 0) {
-		ret = iio_evgen->base;
-		kfree(iio_evgen);
-		return ret;
-	}
-	iio_evgen->chip.name = iio_evgen_name;
-	iio_evgen->chip.irq_mask = &iio_dummy_event_irqmask;
-	iio_evgen->chip.irq_unmask = &iio_dummy_event_irqunmask;
-	for (i = 0; i < IIO_EVENTGEN_NO; i++) {
-		irq_set_chip(iio_evgen->base + i, &iio_evgen->chip);
-		irq_set_handler(iio_evgen->base + i, &handle_simple_irq);
-		irq_modify_status(iio_evgen->base + i,
-				  IRQ_NOREQUEST | IRQ_NOAUTOEN,
-				  IRQ_NOPROBE);
-	}
-	init_irq_work(&iio_evgen->handler.work, iio_dummy_work_handler);
-	mutex_init(&iio_evgen->lock);
-	return 0;
-}
-
-/**
- * iio_dummy_evgen_get_irq() - get an evgen provided irq for a device
- *
- * This function will give a free allocated irq to a client device.
- * That irq can then be caused to 'fire' by using the associated sysfs file.
- */
-int iio_dummy_evgen_get_irq(void)
-{
-	int i, ret = 0;
-
-	if (!iio_evgen)
-		return -ENODEV;
-
-	mutex_lock(&iio_evgen->lock);
-	for (i = 0; i < IIO_EVENTGEN_NO; i++)
-		if (!iio_evgen->inuse[i]) {
-			ret = iio_evgen->base + i;
-			iio_evgen->inuse[i] = true;
-			break;
-		}
-	mutex_unlock(&iio_evgen->lock);
-	if (i == IIO_EVENTGEN_NO)
-		return -ENOMEM;
-	return ret;
-}
-EXPORT_SYMBOL_GPL(iio_dummy_evgen_get_irq);
-
-/**
- * iio_dummy_evgen_release_irq() - give the irq back.
- * @irq: irq being returned to the pool
- *
- * Used by client driver instances to give the irqs back when they disconnect
- */
-void iio_dummy_evgen_release_irq(int irq)
-{
-	mutex_lock(&iio_evgen->lock);
-	iio_evgen->inuse[irq - iio_evgen->base] = false;
-	mutex_unlock(&iio_evgen->lock);
-}
-EXPORT_SYMBOL_GPL(iio_dummy_evgen_release_irq);
-
-struct iio_dummy_regs *iio_dummy_evgen_get_regs(int irq)
-{
-	return &iio_evgen->regs[irq - iio_evgen->base];
-}
-EXPORT_SYMBOL_GPL(iio_dummy_evgen_get_regs);
-
-static void iio_dummy_evgen_free(void)
-{
-	irq_free_descs(iio_evgen->base, IIO_EVENTGEN_NO);
-	kfree(iio_evgen);
-}
-
-static void iio_evgen_release(struct device *dev)
-{
-	iio_dummy_evgen_free();
-}
-
-static ssize_t iio_evgen_poke(struct device *dev,
-			      struct device_attribute *attr,
-			      const char *buf,
-			      size_t len)
-{
-	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
-	unsigned long event;
-	int ret;
-
-	ret = kstrtoul(buf, 10, &event);
-	if (ret)
-		return ret;
-
-	iio_evgen->regs[this_attr->address].reg_id   = this_attr->address;
-	iio_evgen->regs[this_attr->address].reg_data = event;
-
-	iio_evgen->handler.irq = iio_evgen->base + this_attr->address;
-	if (iio_evgen->enabled[this_attr->address])
-		irq_work_queue(&iio_evgen->handler.work);
-
-	return len;
-}
-
-static IIO_DEVICE_ATTR(poke_ev0, S_IWUSR, NULL, &iio_evgen_poke, 0);
-static IIO_DEVICE_ATTR(poke_ev1, S_IWUSR, NULL, &iio_evgen_poke, 1);
-static IIO_DEVICE_ATTR(poke_ev2, S_IWUSR, NULL, &iio_evgen_poke, 2);
-static IIO_DEVICE_ATTR(poke_ev3, S_IWUSR, NULL, &iio_evgen_poke, 3);
-static IIO_DEVICE_ATTR(poke_ev4, S_IWUSR, NULL, &iio_evgen_poke, 4);
-static IIO_DEVICE_ATTR(poke_ev5, S_IWUSR, NULL, &iio_evgen_poke, 5);
-static IIO_DEVICE_ATTR(poke_ev6, S_IWUSR, NULL, &iio_evgen_poke, 6);
-static IIO_DEVICE_ATTR(poke_ev7, S_IWUSR, NULL, &iio_evgen_poke, 7);
-static IIO_DEVICE_ATTR(poke_ev8, S_IWUSR, NULL, &iio_evgen_poke, 8);
-static IIO_DEVICE_ATTR(poke_ev9, S_IWUSR, NULL, &iio_evgen_poke, 9);
-
-static struct attribute *iio_evgen_attrs[] = {
-	&iio_dev_attr_poke_ev0.dev_attr.attr,
-	&iio_dev_attr_poke_ev1.dev_attr.attr,
-	&iio_dev_attr_poke_ev2.dev_attr.attr,
-	&iio_dev_attr_poke_ev3.dev_attr.attr,
-	&iio_dev_attr_poke_ev4.dev_attr.attr,
-	&iio_dev_attr_poke_ev5.dev_attr.attr,
-	&iio_dev_attr_poke_ev6.dev_attr.attr,
-	&iio_dev_attr_poke_ev7.dev_attr.attr,
-	&iio_dev_attr_poke_ev8.dev_attr.attr,
-	&iio_dev_attr_poke_ev9.dev_attr.attr,
-	NULL,
-};
-
-static const struct attribute_group iio_evgen_group = {
-	.attrs = iio_evgen_attrs,
-};
-
-static const struct attribute_group *iio_evgen_groups[] = {
-	&iio_evgen_group,
-	NULL
-};
-
-static struct device iio_evgen_dev = {
-	.bus = &iio_bus_type,
-	.groups = iio_evgen_groups,
-	.release = &iio_evgen_release,
-};
-
-static __init int iio_dummy_evgen_init(void)
-{
-	int ret = iio_dummy_evgen_create();
-
-	if (ret < 0)
-		return ret;
-	device_initialize(&iio_evgen_dev);
-	dev_set_name(&iio_evgen_dev, "iio_evgen");
-	return device_add(&iio_evgen_dev);
-}
-module_init(iio_dummy_evgen_init);
-
-static __exit void iio_dummy_evgen_exit(void)
-{
-	device_unregister(&iio_evgen_dev);
-}
-module_exit(iio_dummy_evgen_exit);
-
-MODULE_AUTHOR("Jonathan Cameron <jic23@kernel.org>");
-MODULE_DESCRIPTION("IIO dummy driver");
-MODULE_LICENSE("GPL v2");