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
This commit is contained in:
Jonas Gorski
parent
960002ed4b
commit
29954b9ffc
3 changed files with 0 additions and 283 deletions
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@ -68,24 +68,6 @@ endef
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$(eval $(call KernelPackage,input-evdev))
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define KernelPackage/input-gpio-buttons
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SUBMENU:=$(INPUT_MODULES_MENU)
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TITLE:=Polled GPIO buttons input device
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DEPENDS:=@GPIO_SUPPORT +kmod-input-polldev
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KCONFIG:= \
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CONFIG_INPUT_GPIO_BUTTONS \
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CONFIG_INPUT_MISC=y
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FILES:=$(LINUX_DIR)/drivers/input/misc/gpio_buttons.ko
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AUTOLOAD:=$(call AutoLoad,62,gpio_buttons,1)
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endef
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define KernelPackage/input-gpio-buttons/description
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Kernel module for support polled GPIO buttons input device
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endef
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$(eval $(call KernelPackage,input-gpio-buttons))
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define KernelPackage/input-gpio-keys
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SUBMENU:=$(INPUT_MODULES_MENU)
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TITLE:=GPIO key support
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@ -1,232 +0,0 @@
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/*
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* Driver for buttons on GPIO lines not capable of generating interrupts
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*
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* Copyright (C) 2007-2010 Gabor Juhos <juhosg@openwrt.org>
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* Copyright (C) 2010 Nuno Goncalves <nunojpg@gmail.com>
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*
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* This file was based on: /drivers/input/misc/cobalt_btns.c
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* Copyright (C) 2007 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
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*
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* also was based on: /drivers/input/keyboard/gpio_keys.c
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* Copyright 2005 Phil Blundell
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/input.h>
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#include <linux/input-polldev.h>
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#include <linux/ioport.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <linux/gpio_buttons.h>
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#define DRV_NAME "gpio-buttons"
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struct gpio_button_data {
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int last_state;
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int count;
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int can_sleep;
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};
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struct gpio_buttons_dev {
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struct input_polled_dev *poll_dev;
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struct gpio_buttons_platform_data *pdata;
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struct gpio_button_data *data;
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};
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static void gpio_buttons_check_state(struct input_dev *input,
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struct gpio_button *button,
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struct gpio_button_data *bdata)
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{
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int state;
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if (bdata->can_sleep)
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state = !!gpio_get_value_cansleep(button->gpio);
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else
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state = !!gpio_get_value(button->gpio);
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if (state != bdata->last_state) {
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unsigned int type = button->type ?: EV_KEY;
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input_event(input, type, button->code,
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!!(state ^ button->active_low));
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input_sync(input);
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bdata->count = 0;
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bdata->last_state = state;
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}
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}
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static void gpio_buttons_poll(struct input_polled_dev *dev)
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{
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struct gpio_buttons_dev *bdev = dev->private;
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struct gpio_buttons_platform_data *pdata = bdev->pdata;
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struct input_dev *input = dev->input;
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int i;
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for (i = 0; i < bdev->pdata->nbuttons; i++) {
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struct gpio_button *button = &pdata->buttons[i];
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struct gpio_button_data *bdata = &bdev->data[i];
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if (bdata->count < button->threshold)
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bdata->count++;
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else
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gpio_buttons_check_state(input, button, bdata);
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}
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}
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static int gpio_buttons_probe(struct platform_device *pdev)
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{
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struct gpio_buttons_platform_data *pdata = pdev->dev.platform_data;
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struct device *dev = &pdev->dev;
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struct gpio_buttons_dev *bdev;
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struct input_polled_dev *poll_dev;
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struct input_dev *input;
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int error;
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int i;
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if (!pdata)
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return -ENXIO;
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bdev = kzalloc(sizeof(struct gpio_buttons_dev) +
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pdata->nbuttons * sizeof(struct gpio_button_data),
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GFP_KERNEL);
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if (!bdev) {
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dev_err(dev, "no memory for private data\n");
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return -ENOMEM;
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}
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bdev->data = (struct gpio_button_data *) &bdev[1];
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poll_dev = input_allocate_polled_device();
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if (!poll_dev) {
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dev_err(dev, "no memory for polled device\n");
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error = -ENOMEM;
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goto err_free_bdev;
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}
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poll_dev->private = bdev;
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poll_dev->poll = gpio_buttons_poll;
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poll_dev->poll_interval = pdata->poll_interval;
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input = poll_dev->input;
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input->evbit[0] = BIT(EV_KEY);
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input->name = pdev->name;
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input->phys = "gpio-buttons/input0";
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input->dev.parent = &pdev->dev;
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input->id.bustype = BUS_HOST;
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input->id.vendor = 0x0001;
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input->id.product = 0x0001;
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input->id.version = 0x0100;
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for (i = 0; i < pdata->nbuttons; i++) {
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struct gpio_button *button = &pdata->buttons[i];
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unsigned int gpio = button->gpio;
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unsigned int type = button->type ?: EV_KEY;
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error = gpio_request(gpio,
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button->desc ? button->desc : DRV_NAME);
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if (error) {
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dev_err(dev, "unable to claim gpio %u, err=%d\n",
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gpio, error);
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goto err_free_gpio;
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}
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error = gpio_direction_input(gpio);
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if (error) {
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dev_err(dev,
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"unable to set direction on gpio %u, err=%d\n",
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gpio, error);
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goto err_free_gpio;
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}
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bdev->data[i].can_sleep = gpio_cansleep(gpio);
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bdev->data[i].last_state = -1;
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input_set_capability(input, type, button->code);
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}
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bdev->poll_dev = poll_dev;
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bdev->pdata = pdata;
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platform_set_drvdata(pdev, bdev);
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error = input_register_polled_device(poll_dev);
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if (error) {
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dev_err(dev, "unable to register polled device, err=%d\n",
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error);
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goto err_free_gpio;
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}
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/* report initial state of the buttons */
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for (i = 0; i < pdata->nbuttons; i++)
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gpio_buttons_check_state(input, &pdata->buttons[i],
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&bdev->data[i]);
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return 0;
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err_free_gpio:
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for (i = i - 1; i >= 0; i--)
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gpio_free(pdata->buttons[i].gpio);
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input_free_polled_device(poll_dev);
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err_free_bdev:
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kfree(bdev);
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platform_set_drvdata(pdev, NULL);
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return error;
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}
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static int gpio_buttons_remove(struct platform_device *pdev)
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{
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struct gpio_buttons_dev *bdev = platform_get_drvdata(pdev);
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struct gpio_buttons_platform_data *pdata = bdev->pdata;
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int i;
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input_unregister_polled_device(bdev->poll_dev);
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for (i = 0; i < pdata->nbuttons; i++)
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gpio_free(pdata->buttons[i].gpio);
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input_free_polled_device(bdev->poll_dev);
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kfree(bdev);
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platform_set_drvdata(pdev, NULL);
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return 0;
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}
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static struct platform_driver gpio_buttons_driver = {
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.probe = gpio_buttons_probe,
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.remove = gpio_buttons_remove,
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.driver = {
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.name = DRV_NAME,
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.owner = THIS_MODULE,
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},
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};
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static int __init gpio_buttons_init(void)
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{
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return platform_driver_register(&gpio_buttons_driver);
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}
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static void __exit gpio_buttons_exit(void)
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{
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platform_driver_unregister(&gpio_buttons_driver);
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}
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module_init(gpio_buttons_init);
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module_exit(gpio_buttons_exit);
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MODULE_LICENSE("GPL v2");
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MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
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MODULE_DESCRIPTION("Polled GPIO Buttons driver");
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@ -1,33 +0,0 @@
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/*
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* Definitions for the GPIO buttons interface driver
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*
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* Copyright (C) 2007-2010 Gabor Juhos <juhosg@openwrt.org>
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*
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* This file was based on: /include/linux/gpio_keys.h
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* The original gpio_keys.h seems not to have a license.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#ifndef _GPIO_BUTTONS_H_
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#define _GPIO_BUTTONS_H_
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struct gpio_button {
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int gpio; /* GPIO line number */
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int active_low;
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char *desc; /* button description */
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int type; /* input event type (EV_KEY, EV_SW) */
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int code; /* input event code (KEY_*, SW_*) */
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int threshold; /* count threshold */
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};
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struct gpio_buttons_platform_data {
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struct gpio_button *buttons;
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int nbuttons; /* number of buttons */
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int poll_interval; /* polling interval */
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};
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#endif /* _GPIO_BUTTONS_H_ */
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