kernel: remove gpio_buttons

It hasn't been buildable for a long time, and there are no users of it
anymore left as all of them have been switched to the upstream accepted
version.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 37436

2 files changed, 0 insertions, 265 deletions

diff --git a/target/linux/generic/files/drivers/input/misc/gpio_buttons.c b/target/linux/generic/files/drivers/input/misc/gpio_buttons.c
deleted file mode 100644
index af54914342..0000000000
--- a/target/linux/generic/files/drivers/input/misc/gpio_buttons.c
+++ /dev/null
@@ -1,232 +0,0 @@
-/*
- *  Driver for buttons on GPIO lines not capable of generating interrupts
- *
- *  Copyright (C) 2007-2010 Gabor Juhos <juhosg@openwrt.org>
- *  Copyright (C) 2010 Nuno Goncalves <nunojpg@gmail.com>
- *
- *  This file was based on: /drivers/input/misc/cobalt_btns.c
- *	Copyright (C) 2007 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
- *
- *  also was based on: /drivers/input/keyboard/gpio_keys.c
- *	Copyright 2005 Phil Blundell
- *
- *  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/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/input.h>
-#include <linux/input-polldev.h>
-#include <linux/ioport.h>
-#include <linux/platform_device.h>
-#include <linux/gpio.h>
-#include <linux/gpio_buttons.h>
-
-#define DRV_NAME	"gpio-buttons"
-
-struct gpio_button_data {
-	int last_state;
-	int count;
-	int can_sleep;
-};
-
-struct gpio_buttons_dev {
-	struct input_polled_dev *poll_dev;
-	struct gpio_buttons_platform_data *pdata;
-	struct gpio_button_data *data;
-};
-
-static void gpio_buttons_check_state(struct input_dev *input,
-				      struct gpio_button *button,
-				      struct gpio_button_data *bdata)
-{
-	int state;
-
-	if (bdata->can_sleep)
-		state = !!gpio_get_value_cansleep(button->gpio);
-	else
-		state = !!gpio_get_value(button->gpio);
-
-	if (state != bdata->last_state) {
-		unsigned int type = button->type ?: EV_KEY;
-
-		input_event(input, type, button->code,
-			    !!(state ^ button->active_low));
-		input_sync(input);
-		bdata->count = 0;
-		bdata->last_state = state;
-	}
-}
-
-static void gpio_buttons_poll(struct input_polled_dev *dev)
-{
-	struct gpio_buttons_dev *bdev = dev->private;
-	struct gpio_buttons_platform_data *pdata = bdev->pdata;
-	struct input_dev *input = dev->input;
-	int i;
-
-	for (i = 0; i < bdev->pdata->nbuttons; i++) {
-		struct gpio_button *button = &pdata->buttons[i];
-		struct gpio_button_data *bdata = &bdev->data[i];
-
-		if (bdata->count < button->threshold)
-			bdata->count++;
-		else
-			gpio_buttons_check_state(input, button, bdata);
-
-	}
-}
-
-static int gpio_buttons_probe(struct platform_device *pdev)
-{
-	struct gpio_buttons_platform_data *pdata = pdev->dev.platform_data;
-	struct device *dev = &pdev->dev;
-	struct gpio_buttons_dev *bdev;
-	struct input_polled_dev *poll_dev;
-	struct input_dev *input;
-	int error;
-	int i;
-
-	if (!pdata)
-		return -ENXIO;
-
-	bdev = kzalloc(sizeof(struct gpio_buttons_dev) +
-		       pdata->nbuttons * sizeof(struct gpio_button_data),
-		       GFP_KERNEL);
-	if (!bdev) {
-		dev_err(dev, "no memory for private data\n");
-		return -ENOMEM;
-	}
-
-	bdev->data = (struct gpio_button_data *) &bdev[1];
-
-	poll_dev = input_allocate_polled_device();
-	if (!poll_dev) {
-		dev_err(dev, "no memory for polled device\n");
-		error = -ENOMEM;
-		goto err_free_bdev;
-	}
-
-	poll_dev->private = bdev;
-	poll_dev->poll = gpio_buttons_poll;
-	poll_dev->poll_interval = pdata->poll_interval;
-
-	input = poll_dev->input;
-
-	input->evbit[0] = BIT(EV_KEY);
-	input->name = pdev->name;
-	input->phys = "gpio-buttons/input0";
-	input->dev.parent = &pdev->dev;
-
-	input->id.bustype = BUS_HOST;
-	input->id.vendor = 0x0001;
-	input->id.product = 0x0001;
-	input->id.version = 0x0100;
-
-	for (i = 0; i < pdata->nbuttons; i++) {
-		struct gpio_button *button = &pdata->buttons[i];
-		unsigned int gpio = button->gpio;
-		unsigned int type = button->type ?: EV_KEY;
-
-		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;
-		}
-
-		bdev->data[i].can_sleep = gpio_cansleep(gpio);
-		bdev->data[i].last_state = -1;
-
-		input_set_capability(input, type, button->code);
-	}
-
-	bdev->poll_dev = poll_dev;
-	bdev->pdata = pdata;
-	platform_set_drvdata(pdev, bdev);
-
-	error = input_register_polled_device(poll_dev);
-	if (error) {
-		dev_err(dev, "unable to register polled device, err=%d\n",
-			error);
-		goto err_free_gpio;
-	}
-
-	/* report initial state of the buttons */
-	for (i = 0; i < pdata->nbuttons; i++)
-		gpio_buttons_check_state(input, &pdata->buttons[i],
-					 &bdev->data[i]);
-
-	return 0;
-
-err_free_gpio:
-	for (i = i - 1; i >= 0; i--)
-		gpio_free(pdata->buttons[i].gpio);
-
-	input_free_polled_device(poll_dev);
-
-err_free_bdev:
-	kfree(bdev);
-
-	platform_set_drvdata(pdev, NULL);
-	return error;
-}
-
-static int gpio_buttons_remove(struct platform_device *pdev)
-{
-	struct gpio_buttons_dev *bdev = platform_get_drvdata(pdev);
-	struct gpio_buttons_platform_data *pdata = bdev->pdata;
-	int i;
-
-	input_unregister_polled_device(bdev->poll_dev);
-
-	for (i = 0; i < pdata->nbuttons; i++)
-		gpio_free(pdata->buttons[i].gpio);
-
-	input_free_polled_device(bdev->poll_dev);
-
-	kfree(bdev);
-	platform_set_drvdata(pdev, NULL);
-
-	return 0;
-}
-
-static struct platform_driver gpio_buttons_driver = {
-	.probe	= gpio_buttons_probe,
-	.remove	= gpio_buttons_remove,
-	.driver	= {
-		.name	= DRV_NAME,
-		.owner	= THIS_MODULE,
-	},
-};
-
-static int __init gpio_buttons_init(void)
-{
-	return platform_driver_register(&gpio_buttons_driver);
-}
-
-static void __exit gpio_buttons_exit(void)
-{
-	platform_driver_unregister(&gpio_buttons_driver);
-}
-
-module_init(gpio_buttons_init);
-module_exit(gpio_buttons_exit);
-
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
-MODULE_DESCRIPTION("Polled GPIO Buttons driver");
diff --git a/target/linux/generic/files/include/linux/gpio_buttons.h b/target/linux/generic/files/include/linux/gpio_buttons.h
deleted file mode 100644
index f85b993ed2..0000000000
--- a/target/linux/generic/files/include/linux/gpio_buttons.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- *  Definitions for the GPIO buttons interface driver
- *
- *  Copyright (C) 2007-2010 Gabor Juhos <juhosg@openwrt.org>
- *
- *  This file was based on: /include/linux/gpio_keys.h
- *	The original gpio_keys.h seems not to have a license.
- *
- *  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.
- *
- */
-
-#ifndef _GPIO_BUTTONS_H_
-#define _GPIO_BUTTONS_H_
-
-struct gpio_button {
-	int	gpio;		/* GPIO line number */
-	int	active_low;
-	char	*desc;		/* button description */
-	int	type;		/* input event type (EV_KEY, EV_SW) */
-	int	code;		/* input event code (KEY_*, SW_*) */
-	int	threshold;	/* count threshold */
-};
-
-struct gpio_buttons_platform_data {
-	struct gpio_button *buttons;
-	int	nbuttons;		/* number of buttons */
-	int	poll_interval;		/* polling interval */
-};
-
-#endif /* _GPIO_BUTTONS_H_ */