1 files changed, 0 insertions, 564 deletions
diff --git a/package/system/gpio-button-hotplug/src/gpio-button-hotplug.c b/package/system/gpio-button-hotplug/src/gpio-button-hotplug.c
deleted file mode 100644
index 9d91b57..0000000
--- a/package/system/gpio-button-hotplug/src/gpio-button-hotplug.c
+++ /dev/null
@@ -1,564 +0,0 @@
-/*
- *  GPIO Button Hotplug driver
- *
- *  Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
- *  Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
- *
- *  Based on the diag.c - GPIO interface driver for Broadcom boards
- *    Copyright (C) 2006 Mike Baker <mbm@openwrt.org>,
- *    Copyright (C) 2006-2007 Felix Fietkau <nbd@openwrt.org>
- *    Copyright (C) 2008 Andy Boyett <agb@openwrt.org>
- *
- *  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.
- */
-
-#include <linux/module.h>
-#include <linux/version.h>
-#include <linux/kmod.h>
-
-#include <linux/workqueue.h>
-#include <linux/skbuff.h>
-#include <linux/netlink.h>
-#include <linux/kobject.h>
-#include <linux/input.h>
-#include <linux/platform_device.h>
-#include <linux/of_gpio.h>
-#include <linux/gpio_keys.h>
-
-#define DRV_NAME	"gpio-keys-polled"
-
-#define BH_SKB_SIZE	2048
-
-#define PFX	DRV_NAME ": "
-
-#undef BH_DEBUG
-
-#ifdef BH_DEBUG
-#define BH_DBG(fmt, args...) printk(KERN_DEBUG "%s: " fmt, DRV_NAME, ##args )
-#else
-#define BH_DBG(fmt, args...) do {} while (0)
-#endif
-
-#define BH_ERR(fmt, args...) printk(KERN_ERR "%s: " fmt, DRV_NAME, ##args )
-
-struct bh_priv {
-	unsigned long		seen;
-};
-
-struct bh_event {
-	const char		*name;
-	char			*action;
-	unsigned long		seen;
-
-	struct sk_buff		*skb;
-	struct work_struct	work;
-};
-
-struct bh_map {
-	unsigned int	code;
-	const char	*name;
-};
-
-struct gpio_keys_button_data {
-	struct delayed_work work;
-	struct bh_priv bh;
-	int last_state;
-	int count;
-	int threshold;
-	int can_sleep;
-};
-
-extern u64 uevent_next_seqnum(void);
-
-#define BH_MAP(_code, _name)		\
-	{				\
-		.code = (_code),	\
-		.name = (_name),	\
-	}
-
-static struct bh_map button_map[] = {
-	BH_MAP(BTN_0,		"BTN_0"),
-	BH_MAP(BTN_1,		"BTN_1"),
-	BH_MAP(BTN_2,		"BTN_2"),
-	BH_MAP(BTN_3,		"BTN_3"),
-	BH_MAP(BTN_4,		"BTN_4"),
-	BH_MAP(BTN_5,		"BTN_5"),
-	BH_MAP(BTN_6,		"BTN_6"),
-	BH_MAP(BTN_7,		"BTN_7"),
-	BH_MAP(BTN_8,		"BTN_8"),
-	BH_MAP(BTN_9,		"BTN_9"),
-	BH_MAP(KEY_RESTART,	"reset"),
-	BH_MAP(KEY_RFKILL,	"rfkill"),
-#ifdef KEY_WPS_BUTTON
-	BH_MAP(KEY_WPS_BUTTON,	"wps"),
-#endif /* KEY_WPS_BUTTON */
-};
-
-/* -------------------------------------------------------------------------*/
-
-static int bh_event_add_var(struct bh_event *event, int argv,
-		const char *format, ...)
-{
-	static char buf[128];
-	char *s;
-	va_list args;
-	int len;
-
-	if (argv)
-		return 0;
-
-	va_start(args, format);
-	len = vsnprintf(buf, sizeof(buf), format, args);
-	va_end(args);
-
-	if (len >= sizeof(buf)) {
-		BH_ERR("buffer size too small\n");
-		WARN_ON(1);
-		return -ENOMEM;
-	}
-
-	s = skb_put(event->skb, len + 1);
-	strcpy(s, buf);
-
-	BH_DBG("added variable '%s'\n", s);
-
-	return 0;
-}
-
-static int button_hotplug_fill_event(struct bh_event *event)
-{
-	int ret;
-
-	ret = bh_event_add_var(event, 0, "HOME=%s", "/");
-	if (ret)
-		return ret;
-
-	ret = bh_event_add_var(event, 0, "PATH=%s",
-					"/sbin:/bin:/usr/sbin:/usr/bin");
-	if (ret)
-		return ret;
-
-	ret = bh_event_add_var(event, 0, "SUBSYSTEM=%s", "button");
-	if (ret)
-		return ret;
-
-	ret = bh_event_add_var(event, 0, "ACTION=%s", event->action);
-	if (ret)
-		return ret;
-
-	ret = bh_event_add_var(event, 0, "BUTTON=%s", event->name);
-	if (ret)
-		return ret;
-
-	ret = bh_event_add_var(event, 0, "SEEN=%ld", event->seen);
-	if (ret)
-		return ret;
-
-	ret = bh_event_add_var(event, 0, "SEQNUM=%llu", uevent_next_seqnum());
-
-	return ret;
-}
-
-static void button_hotplug_work(struct work_struct *work)
-{
-	struct bh_event *event = container_of(work, struct bh_event, work);
-	int ret = 0;
-
-	event->skb = alloc_skb(BH_SKB_SIZE, GFP_KERNEL);
-	if (!event->skb)
-		goto out_free_event;
-
-	ret = bh_event_add_var(event, 0, "%s@", event->action);
-	if (ret)
-		goto out_free_skb;
-
-	ret = button_hotplug_fill_event(event);
-	if (ret)
-		goto out_free_skb;
-
-	NETLINK_CB(event->skb).dst_group = 1;
-	broadcast_uevent(event->skb, 0, 1, GFP_KERNEL);
-
- out_free_skb:
-	if (ret) {
-		BH_ERR("work error %d\n", ret);
-		kfree_skb(event->skb);
-	}
- out_free_event:
-	kfree(event);
-}
-
-static int button_hotplug_create_event(const char *name, unsigned long seen,
-		int pressed)
-{
-	struct bh_event *event;
-
-	BH_DBG("create event, name=%s, seen=%lu, pressed=%d\n",
-		name, seen, pressed);
-
-	event = kzalloc(sizeof(*event), GFP_KERNEL);
-	if (!event)
-		return -ENOMEM;
-
-	event->name = name;
-	event->seen = seen;
-	event->action = pressed ? "pressed" : "released";
-
-	INIT_WORK(&event->work, (void *)(void *)button_hotplug_work);
-	schedule_work(&event->work);
-
-	return 0;
-}
-
-/* -------------------------------------------------------------------------*/
-
-#ifdef	CONFIG_HOTPLUG
-static int button_get_index(unsigned int code)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(button_map); i++)
-		if (button_map[i].code == code)
-			return i;
-
-	return -1;
-}
-static void button_hotplug_event(struct gpio_keys_button_data *data,
-			   unsigned int type, unsigned int code, int value)
-{
-	struct bh_priv *priv = &data->bh;
-	unsigned long seen = jiffies;
-	int btn;
-
-	BH_DBG("event type=%u, code=%u, value=%d\n", type, code, value);
-
-	if (type != EV_KEY)
-		return;
-
-	btn = button_get_index(code);
-	if (btn < 0)
-		return;
-
-	button_hotplug_create_event(button_map[btn].name,
-			(seen - priv->seen) / HZ, value);
-	priv->seen = seen;
-}
-#else
-static void button_hotplug_event(struct gpio_keys_button_data *data,
-			   unsigned int type, unsigned int code, int value)
-{
-}
-#endif	/* CONFIG_HOTPLUG */
-
-struct gpio_keys_polled_dev {
-	struct delayed_work work;
-
-	struct device *dev;
-	struct gpio_keys_platform_data *pdata;
-	struct gpio_keys_button_data data[0];
-};
-
-static void gpio_keys_polled_check_state(struct gpio_keys_button *button,
-					 struct gpio_keys_button_data *bdata)
-{
-	int state;
-
-	if (bdata->can_sleep)
-		state = !!gpio_get_value_cansleep(button->gpio);
-	else
-		state = !!gpio_get_value(button->gpio);
-
-	state = !!(state ^ button->active_low);
-	if (state != bdata->last_state) {
-		unsigned int type = button->type ?: EV_KEY;
-
-		button_hotplug_event(bdata, type, button->code, state);
-		bdata->count = 0;
-		bdata->last_state = state;
-	}
-}
-
-static void gpio_keys_polled_queue_work(struct gpio_keys_polled_dev *bdev)
-{
-	struct gpio_keys_platform_data *pdata = bdev->pdata;
-	unsigned long delay = msecs_to_jiffies(pdata->poll_interval);
-
-	if (delay >= HZ)
-	    delay = round_jiffies_relative(delay);
-	schedule_delayed_work(&bdev->work, delay);
-}
-
-static void gpio_keys_polled_poll(struct work_struct *work)
-{
-	struct gpio_keys_polled_dev *bdev =
-		container_of(work, struct gpio_keys_polled_dev, work.work);
-	struct gpio_keys_platform_data *pdata = bdev->pdata;
-	int i;
-
-	for (i = 0; i < bdev->pdata->nbuttons; i++) {
-		struct gpio_keys_button_data *bdata = &bdev->data[i];
-
-		if (bdata->count < bdata->threshold)
-			bdata->count++;
-		else
-			gpio_keys_polled_check_state(&pdata->buttons[i], bdata);
-	}
-	gpio_keys_polled_queue_work(bdev);
-}
-
-static void gpio_keys_polled_open(struct gpio_keys_polled_dev *bdev)
-{
-	struct gpio_keys_platform_data *pdata = bdev->pdata;
-	int i;
-
-	if (pdata->enable)
-		pdata->enable(bdev->dev);
-
-	/* report initial state of the buttons */
-	for (i = 0; i < pdata->nbuttons; i++)
-		gpio_keys_polled_check_state(&pdata->buttons[i], &bdev->data[i]);
-
-	gpio_keys_polled_queue_work(bdev);
-}
-
-#ifdef CONFIG_OF
-static struct gpio_keys_platform_data *
-gpio_keys_polled_get_devtree_pdata(struct device *dev)
-{
-	struct device_node *node, *pp;
-	struct gpio_keys_platform_data *pdata;
-	struct gpio_keys_button *button;
-	int error;
-	int nbuttons;
-	int i;
-
-	node = dev->of_node;
-	if (!node)
-		return NULL;
-
-	nbuttons = of_get_child_count(node);
-	if (nbuttons == 0)
-		return NULL;
-
-	pdata = kzalloc(sizeof(*pdata) + nbuttons * (sizeof *button),
-		GFP_KERNEL);
-	if (!pdata) {
-		error = -ENOMEM;
-		goto err_out;
-	}
-
-	pdata->buttons = (struct gpio_keys_button *)(pdata + 1);
-	pdata->nbuttons = nbuttons;
-
-	pdata->rep = !!of_get_property(node, "autorepeat", NULL);
-	of_property_read_u32(node, "poll-interval", &pdata->poll_interval);
-
-	i = 0;
-	for_each_child_of_node(node, pp) {
-		enum of_gpio_flags flags;
-
-		if (!of_find_property(pp, "gpios", NULL)) {
-			pdata->nbuttons--;
-			dev_warn(dev, "Found button without gpios\n");
-			continue;
-		}
-
-		button = &pdata->buttons[i++];
-
-		button->gpio = of_get_gpio_flags(pp, 0, &flags);
-		button->active_low = flags & OF_GPIO_ACTIVE_LOW;
-
-		if (of_property_read_u32(pp, "linux,code", &button->code)) {
-			dev_err(dev, "Button without keycode: 0x%x\n",
-				button->gpio);
-			error = -EINVAL;
-			goto err_free_pdata;
-		}
-
-		button->desc = of_get_property(pp, "label", NULL);
-
-		if (of_property_read_u32(pp, "linux,input-type", &button->type))
-			button->type = EV_KEY;
-
-		button->wakeup = !!of_get_property(pp, "gpio-key,wakeup", NULL);
-
-		if (of_property_read_u32(pp, "debounce-interval",
-					&button->debounce_interval))
-			button->debounce_interval = 5;
-	}
-
-	if (pdata->nbuttons == 0) {
-		error = -EINVAL;
-		goto err_free_pdata;
-	}
-
-	return pdata;
-
-err_free_pdata:
-	kfree(pdata);
-err_out:
-	return ERR_PTR(error);
-}
-
-static struct of_device_id gpio_keys_polled_of_match[] = {
-	{ .compatible = "gpio-keys-polled", },
-	{ },
-};
-MODULE_DEVICE_TABLE(of, gpio_keys_polled_of_match);
-
-#else
-
-static inline struct gpio_keys_platform_data *
-gpio_keys_polled_get_devtree_pdata(struct device *dev)
-{
-	return NULL;
-}
-#endif
-
-static void gpio_keys_polled_close(struct gpio_keys_polled_dev *bdev)
-{
-	struct gpio_keys_platform_data *pdata = bdev->pdata;
-
-	cancel_delayed_work_sync(&bdev->work);
-
-	if (pdata->disable)
-		pdata->disable(bdev->dev);
-}
-
-static int gpio_keys_polled_probe(struct platform_device *pdev)
-{
-	struct gpio_keys_platform_data *pdata = pdev->dev.platform_data;
-	struct device *dev = &pdev->dev;
-	struct gpio_keys_polled_dev *bdev;
-	int error;
-	int i;
-
-	if (!pdata) {
-		pdata = gpio_keys_polled_get_devtree_pdata(dev);
-		if (IS_ERR(pdata))
-			return PTR_ERR(pdata);
-		if (!pdata) {
-			dev_err(dev, "missing platform data\n");
-			return -EINVAL;
-		}
-	}
-
-	if (!pdata->poll_interval) {
-		dev_err(dev, "missing poll_interval value\n");
-		error = -EINVAL;
-		goto err_free_pdata;
-	}
-
-	bdev = kzalloc(sizeof(struct gpio_keys_polled_dev) +
-		       pdata->nbuttons * sizeof(struct gpio_keys_button_data),
-		       GFP_KERNEL);
-	if (!bdev) {
-		dev_err(dev, "no memory for private data\n");
-		return -ENOMEM;
-	}
-
-	for (i = 0; i < pdata->nbuttons; i++) {
-		struct gpio_keys_button *button = &pdata->buttons[i];
-		struct gpio_keys_button_data *bdata = &bdev->data[i];
-		unsigned int gpio = button->gpio;
-
-		if (button->wakeup) {
-			dev_err(dev, DRV_NAME " does not support wakeup\n");
-			error = -EINVAL;
-			goto err_free_gpio;
-		}
-
-		error = gpio_request(gpio,
-				     button->desc ? button->desc : DRV_NAME);
-		if (error) {
-			dev_err(dev, "unable to claim gpio %u, err=%d\n",
-				gpio, error);
-			goto err_free_gpio;
-		}
-
-		error = gpio_direction_input(gpio);
-		if (error) {
-			dev_err(dev,
-				"unable to set direction on gpio %u, err=%d\n",
-				gpio, error);
-			goto err_free_gpio;
-		}
-
-		bdata->can_sleep = gpio_cansleep(gpio);
-		bdata->last_state = 0;
-		bdata->threshold = DIV_ROUND_UP(button->debounce_interval,
-						pdata->poll_interval);
-	}
-
-	bdev->dev = &pdev->dev;
-	bdev->pdata = pdata;
-	platform_set_drvdata(pdev, bdev);
-
-	INIT_DELAYED_WORK(&bdev->work, gpio_keys_polled_poll);
-
-	gpio_keys_polled_open(bdev);
-
-	return 0;
-
-err_free_gpio:
-	while (--i >= 0)
-		gpio_free(pdata->buttons[i].gpio);
-
-	kfree(bdev);
-	platform_set_drvdata(pdev, NULL);
-
-err_free_pdata:
-	/* If we have no platform_data, we allocated pdata dynamically.  */
-	if (!dev_get_platdata(&pdev->dev))
-		kfree(pdata);
-
-	return error;
-}
-
-static int gpio_keys_polled_remove(struct platform_device *pdev)
-{
-	struct gpio_keys_polled_dev *bdev = platform_get_drvdata(pdev);
-	struct gpio_keys_platform_data *pdata = bdev->pdata;
-	int i = pdata->nbuttons;
-
-	gpio_keys_polled_close(bdev);
-
-	while (--i >= 0)
-		gpio_free(pdata->buttons[i].gpio);
-
-	kfree(bdev);
-	platform_set_drvdata(pdev, NULL);
-
-	return 0;
-}
-
-static struct platform_driver gpio_keys_polled_driver = {
-	.probe	= gpio_keys_polled_probe,
-	.remove	= gpio_keys_polled_remove,
-	.driver	= {
-		.name	= DRV_NAME,
-		.owner	= THIS_MODULE,
-		.of_match_table = of_match_ptr(gpio_keys_polled_of_match),
-	},
-};
-
-static int __init gpio_keys_polled_init(void)
-{
-	return platform_driver_register(&gpio_keys_polled_driver);
-}
-
-static void __exit gpio_keys_polled_exit(void)
-{
-	platform_driver_unregister(&gpio_keys_polled_driver);
-}
-
-module_init(gpio_keys_polled_init);
-module_exit(gpio_keys_polled_exit);
-
-MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
-MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
-MODULE_DESCRIPTION("Polled GPIO Buttons hotplug driver");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:" DRV_NAME);