1 files changed, 0 insertions, 352 deletions
diff --git a/drivers/pwm/sysfs.c b/drivers/pwm/sysfs.c
deleted file mode 100644
index 8ca5de316d3b..000000000000
--- a/drivers/pwm/sysfs.c
+++ /dev/null
@@ -1,352 +0,0 @@
-/*
- * A simple sysfs interface for the generic PWM framework
- *
- * Copyright (C) 2013 H Hartley Sweeten <hsweeten@visionengravers.com>
- *
- * Based on previous work by Lars Poeschel <poeschel@lemonage.de>
- *
- * 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, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#include <linux/device.h>
-#include <linux/mutex.h>
-#include <linux/err.h>
-#include <linux/slab.h>
-#include <linux/kdev_t.h>
-#include <linux/pwm.h>
-
-struct pwm_export {
-	struct device child;
-	struct pwm_device *pwm;
-};
-
-static struct pwm_export *child_to_pwm_export(struct device *child)
-{
-	return container_of(child, struct pwm_export, child);
-}
-
-static struct pwm_device *child_to_pwm_device(struct device *child)
-{
-	struct pwm_export *export = child_to_pwm_export(child);
-
-	return export->pwm;
-}
-
-static ssize_t pwm_period_show(struct device *child,
-			       struct device_attribute *attr,
-			       char *buf)
-{
-	const struct pwm_device *pwm = child_to_pwm_device(child);
-
-	return sprintf(buf, "%u\n", pwm->period);
-}
-
-static ssize_t pwm_period_store(struct device *child,
-				struct device_attribute *attr,
-				const char *buf, size_t size)
-{
-	struct pwm_device *pwm = child_to_pwm_device(child);
-	unsigned int val;
-	int ret;
-
-	ret = kstrtouint(buf, 0, &val);
-	if (ret)
-		return ret;
-
-	ret = pwm_config(pwm, pwm->duty_cycle, val);
-
-	return ret ? : size;
-}
-
-static ssize_t pwm_duty_cycle_show(struct device *child,
-				   struct device_attribute *attr,
-				   char *buf)
-{
-	const struct pwm_device *pwm = child_to_pwm_device(child);
-
-	return sprintf(buf, "%u\n", pwm->duty_cycle);
-}
-
-static ssize_t pwm_duty_cycle_store(struct device *child,
-				    struct device_attribute *attr,
-				    const char *buf, size_t size)
-{
-	struct pwm_device *pwm = child_to_pwm_device(child);
-	unsigned int val;
-	int ret;
-
-	ret = kstrtouint(buf, 0, &val);
-	if (ret)
-		return ret;
-
-	ret = pwm_config(pwm, val, pwm->period);
-
-	return ret ? : size;
-}
-
-static ssize_t pwm_enable_show(struct device *child,
-			       struct device_attribute *attr,
-			       char *buf)
-{
-	const struct pwm_device *pwm = child_to_pwm_device(child);
-	int enabled = test_bit(PWMF_ENABLED, &pwm->flags);
-
-	return sprintf(buf, "%d\n", enabled);
-}
-
-static ssize_t pwm_enable_store(struct device *child,
-				struct device_attribute *attr,
-				const char *buf, size_t size)
-{
-	struct pwm_device *pwm = child_to_pwm_device(child);
-	int val, ret;
-
-	ret = kstrtoint(buf, 0, &val);
-	if (ret)
-		return ret;
-
-	switch (val) {
-	case 0:
-		pwm_disable(pwm);
-		break;
-	case 1:
-		ret = pwm_enable(pwm);
-		break;
-	default:
-		ret = -EINVAL;
-		break;
-	}
-
-	return ret ? : size;
-}
-
-static ssize_t pwm_polarity_show(struct device *child,
-				 struct device_attribute *attr,
-				 char *buf)
-{
-	const struct pwm_device *pwm = child_to_pwm_device(child);
-
-	return sprintf(buf, "%s\n", pwm->polarity ? "inversed" : "normal");
-}
-
-static ssize_t pwm_polarity_store(struct device *child,
-				  struct device_attribute *attr,
-				  const char *buf, size_t size)
-{
-	struct pwm_device *pwm = child_to_pwm_device(child);
-	enum pwm_polarity polarity;
-	int ret;
-
-	if (sysfs_streq(buf, "normal"))
-		polarity = PWM_POLARITY_NORMAL;
-	else if (sysfs_streq(buf, "inversed"))
-		polarity = PWM_POLARITY_INVERSED;
-	else
-		return -EINVAL;
-
-	ret = pwm_set_polarity(pwm, polarity);
-
-	return ret ? : size;
-}
-
-static DEVICE_ATTR(period, 0644, pwm_period_show, pwm_period_store);
-static DEVICE_ATTR(duty_cycle, 0644, pwm_duty_cycle_show, pwm_duty_cycle_store);
-static DEVICE_ATTR(enable, 0644, pwm_enable_show, pwm_enable_store);
-static DEVICE_ATTR(polarity, 0644, pwm_polarity_show, pwm_polarity_store);
-
-static struct attribute *pwm_attrs[] = {
-	&dev_attr_period.attr,
-	&dev_attr_duty_cycle.attr,
-	&dev_attr_enable.attr,
-	&dev_attr_polarity.attr,
-	NULL
-};
-
-static const struct attribute_group pwm_attr_group = {
-	.attrs		= pwm_attrs,
-};
-
-static const struct attribute_group *pwm_attr_groups[] = {
-	&pwm_attr_group,
-	NULL,
-};
-
-static void pwm_export_release(struct device *child)
-{
-	struct pwm_export *export = child_to_pwm_export(child);
-
-	kfree(export);
-}
-
-static int pwm_export_child(struct device *parent, struct pwm_device *pwm)
-{
-	struct pwm_export *export;
-	int ret;
-
-	if (test_and_set_bit(PWMF_EXPORTED, &pwm->flags))
-		return -EBUSY;
-
-	export = kzalloc(sizeof(*export), GFP_KERNEL);
-	if (!export) {
-		clear_bit(PWMF_EXPORTED, &pwm->flags);
-		return -ENOMEM;
-	}
-
-	export->pwm = pwm;
-
-	export->child.release = pwm_export_release;
-	export->child.parent = parent;
-	export->child.devt = MKDEV(0, 0);
-	export->child.groups = pwm_attr_groups;
-	dev_set_name(&export->child, "pwm%u", pwm->hwpwm);
-
-	ret = device_register(&export->child);
-	if (ret) {
-		clear_bit(PWMF_EXPORTED, &pwm->flags);
-		kfree(export);
-		return ret;
-	}
-
-	return 0;
-}
-
-static int pwm_unexport_match(struct device *child, void *data)
-{
-	return child_to_pwm_device(child) == data;
-}
-
-static int pwm_unexport_child(struct device *parent, struct pwm_device *pwm)
-{
-	struct device *child;
-
-	if (!test_and_clear_bit(PWMF_EXPORTED, &pwm->flags))
-		return -ENODEV;
-
-	child = device_find_child(parent, pwm, pwm_unexport_match);
-	if (!child)
-		return -ENODEV;
-
-	/* for device_find_child() */
-	put_device(child);
-	device_unregister(child);
-	pwm_put(pwm);
-
-	return 0;
-}
-
-static ssize_t pwm_export_store(struct device *parent,
-				struct device_attribute *attr,
-				const char *buf, size_t len)
-{
-	struct pwm_chip *chip = dev_get_drvdata(parent);
-	struct pwm_device *pwm;
-	unsigned int hwpwm;
-	int ret;
-
-	ret = kstrtouint(buf, 0, &hwpwm);
-	if (ret < 0)
-		return ret;
-
-	if (hwpwm >= chip->npwm)
-		return -ENODEV;
-
-	pwm = pwm_request_from_chip(chip, hwpwm, "sysfs");
-	if (IS_ERR(pwm))
-		return PTR_ERR(pwm);
-
-	ret = pwm_export_child(parent, pwm);
-	if (ret < 0)
-		pwm_put(pwm);
-
-	return ret ? : len;
-}
-
-static ssize_t pwm_unexport_store(struct device *parent,
-				  struct device_attribute *attr,
-				  const char *buf, size_t len)
-{
-	struct pwm_chip *chip = dev_get_drvdata(parent);
-	unsigned int hwpwm;
-	int ret;
-
-	ret = kstrtouint(buf, 0, &hwpwm);
-	if (ret < 0)
-		return ret;
-
-	if (hwpwm >= chip->npwm)
-		return -ENODEV;
-
-	ret = pwm_unexport_child(parent, &chip->pwms[hwpwm]);
-
-	return ret ? : len;
-}
-
-static ssize_t pwm_npwm_show(struct device *parent,
-			     struct device_attribute *attr,
-			     char *buf)
-{
-	const struct pwm_chip *chip = dev_get_drvdata(parent);
-
-	return sprintf(buf, "%u\n", chip->npwm);
-}
-
-static struct device_attribute pwm_chip_attrs[] = {
-	__ATTR(export, 0200, NULL, pwm_export_store),
-	__ATTR(unexport, 0200, NULL, pwm_unexport_store),
-	__ATTR(npwm, 0444, pwm_npwm_show, NULL),
-	__ATTR_NULL,
-};
-
-static struct class pwm_class = {
-	.name		= "pwm",
-	.owner		= THIS_MODULE,
-	.dev_attrs	= pwm_chip_attrs,
-};
-
-static int pwmchip_sysfs_match(struct device *parent, const void *data)
-{
-	return dev_get_drvdata(parent) == data;
-}
-
-void pwmchip_sysfs_export(struct pwm_chip *chip)
-{
-	struct device *parent;
-
-	/*
-	 * If device_create() fails the pwm_chip is still usable by
-	 * the kernel its just not exported.
-	 */
-	parent = device_create(&pwm_class, chip->dev, MKDEV(0, 0), chip,
-			       "pwmchip%d", chip->base);
-	if (IS_ERR(parent)) {
-		dev_warn(chip->dev,
-			 "device_create failed for pwm_chip sysfs export\n");
-	}
-}
-
-void pwmchip_sysfs_unexport(struct pwm_chip *chip)
-{
-	struct device *parent;
-
-	parent = class_find_device(&pwm_class, NULL, chip,
-				   pwmchip_sysfs_match);
-	if (parent) {
-		/* for class_find_device() */
-		put_device(parent);
-		device_unregister(parent);
-	}
-}
-
-static int __init pwm_sysfs_init(void)
-{
-	return class_register(&pwm_class);
-}
-subsys_initcall(pwm_sysfs_init);