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author | MyungJoo Ham <myungjoo.ham@samsung.com> | 2012-04-23 20:19:57 +0900 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-04-23 13:24:00 -0700 |
commit | 449a2bf5e881b2a00d42a7c0baa67119c8cb5dce (patch) | |
tree | 2332c49efb737ed3033b180567afcc2c8938eb8c /drivers/staging/android/switch | |
parent | 3e971dbc7e716a92e68ad4757193f3c10efdaba9 (diff) | |
download | op-kernel-dev-449a2bf5e881b2a00d42a7c0baa67119c8cb5dce.zip op-kernel-dev-449a2bf5e881b2a00d42a7c0baa67119c8cb5dce.tar.gz |
Remove "switch" class in drivers/staging/android/switch
Because extcon can also be a switch class for legacy userspace (Android)
and is a superset of switch class in drivers/staging/android/switch,
switch class may be removed.
- Remove switch class
- Remove switch class consideration in extcon class
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/android/switch')
-rw-r--r-- | drivers/staging/android/switch/Kconfig | 11 | ||||
-rw-r--r-- | drivers/staging/android/switch/Makefile | 4 | ||||
-rw-r--r-- | drivers/staging/android/switch/switch.h | 53 | ||||
-rw-r--r-- | drivers/staging/android/switch/switch_class.c | 174 | ||||
-rw-r--r-- | drivers/staging/android/switch/switch_gpio.c | 172 |
5 files changed, 0 insertions, 414 deletions
diff --git a/drivers/staging/android/switch/Kconfig b/drivers/staging/android/switch/Kconfig deleted file mode 100644 index 36846f6..0000000 --- a/drivers/staging/android/switch/Kconfig +++ /dev/null @@ -1,11 +0,0 @@ -menuconfig ANDROID_SWITCH - tristate "Android Switch class support" - help - Say Y here to enable Android switch class support. This allows - monitoring switches by userspace via sysfs and uevent. - -config ANDROID_SWITCH_GPIO - tristate "Android GPIO Switch support" - depends on GENERIC_GPIO && ANDROID_SWITCH - help - Say Y here to enable GPIO based switch support. diff --git a/drivers/staging/android/switch/Makefile b/drivers/staging/android/switch/Makefile deleted file mode 100644 index d76bfdc..0000000 --- a/drivers/staging/android/switch/Makefile +++ /dev/null @@ -1,4 +0,0 @@ -# Android Switch Class Driver -obj-$(CONFIG_ANDROID_SWITCH) += switch_class.o -obj-$(CONFIG_ANDROID_SWITCH_GPIO) += switch_gpio.o - diff --git a/drivers/staging/android/switch/switch.h b/drivers/staging/android/switch/switch.h deleted file mode 100644 index 4fcb310..0000000 --- a/drivers/staging/android/switch/switch.h +++ /dev/null @@ -1,53 +0,0 @@ -/* - * Switch class driver - * - * Copyright (C) 2008 Google, Inc. - * Author: Mike Lockwood <lockwood@android.com> - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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. - * -*/ - -#ifndef __LINUX_SWITCH_H__ -#define __LINUX_SWITCH_H__ - -struct switch_dev { - const char *name; - struct device *dev; - int index; - int state; - - ssize_t (*print_name)(struct switch_dev *sdev, char *buf); - ssize_t (*print_state)(struct switch_dev *sdev, char *buf); -}; - -struct gpio_switch_platform_data { - const char *name; - unsigned gpio; - - /* if NULL, switch_dev.name will be printed */ - const char *name_on; - const char *name_off; - /* if NULL, "0" or "1" will be printed */ - const char *state_on; - const char *state_off; -}; - -extern int switch_dev_register(struct switch_dev *sdev); -extern void switch_dev_unregister(struct switch_dev *sdev); - -static inline int switch_get_state(struct switch_dev *sdev) -{ - return sdev->state; -} - -extern void switch_set_state(struct switch_dev *sdev, int state); - -#endif /* __LINUX_SWITCH_H__ */ diff --git a/drivers/staging/android/switch/switch_class.c b/drivers/staging/android/switch/switch_class.c deleted file mode 100644 index 7468044..0000000 --- a/drivers/staging/android/switch/switch_class.c +++ /dev/null @@ -1,174 +0,0 @@ -/* - * switch_class.c - * - * Copyright (C) 2008 Google, Inc. - * Author: Mike Lockwood <lockwood@android.com> - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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/module.h> -#include <linux/types.h> -#include <linux/init.h> -#include <linux/device.h> -#include <linux/fs.h> -#include <linux/err.h> -#include "switch.h" - -struct class *switch_class; -static atomic_t device_count; - -static ssize_t state_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct switch_dev *sdev = (struct switch_dev *) - dev_get_drvdata(dev); - - if (sdev->print_state) { - int ret = sdev->print_state(sdev, buf); - if (ret >= 0) - return ret; - } - return sprintf(buf, "%d\n", sdev->state); -} - -static ssize_t name_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct switch_dev *sdev = (struct switch_dev *) - dev_get_drvdata(dev); - - if (sdev->print_name) { - int ret = sdev->print_name(sdev, buf); - if (ret >= 0) - return ret; - } - return sprintf(buf, "%s\n", sdev->name); -} - -static DEVICE_ATTR(state, S_IRUGO | S_IWUSR, state_show, NULL); -static DEVICE_ATTR(name, S_IRUGO | S_IWUSR, name_show, NULL); - -void switch_set_state(struct switch_dev *sdev, int state) -{ - char name_buf[120]; - char state_buf[120]; - char *prop_buf; - char *envp[3]; - int env_offset = 0; - int length; - - if (sdev->state != state) { - sdev->state = state; - - prop_buf = (char *)get_zeroed_page(GFP_KERNEL); - if (prop_buf) { - length = name_show(sdev->dev, NULL, prop_buf); - if (length > 0) { - if (prop_buf[length - 1] == '\n') - prop_buf[length - 1] = 0; - snprintf(name_buf, sizeof(name_buf), - "SWITCH_NAME=%s", prop_buf); - envp[env_offset++] = name_buf; - } - length = state_show(sdev->dev, NULL, prop_buf); - if (length > 0) { - if (prop_buf[length - 1] == '\n') - prop_buf[length - 1] = 0; - snprintf(state_buf, sizeof(state_buf), - "SWITCH_STATE=%s", prop_buf); - envp[env_offset++] = state_buf; - } - envp[env_offset] = NULL; - kobject_uevent_env(&sdev->dev->kobj, KOBJ_CHANGE, envp); - free_page((unsigned long)prop_buf); - } else { - printk(KERN_ERR "out of memory in switch_set_state\n"); - kobject_uevent(&sdev->dev->kobj, KOBJ_CHANGE); - } - } -} -EXPORT_SYMBOL_GPL(switch_set_state); - -static int create_switch_class(void) -{ - if (!switch_class) { - switch_class = class_create(THIS_MODULE, "switch"); - if (IS_ERR(switch_class)) - return PTR_ERR(switch_class); - atomic_set(&device_count, 0); - } - - return 0; -} - -int switch_dev_register(struct switch_dev *sdev) -{ - int ret; - - if (!switch_class) { - ret = create_switch_class(); - if (ret < 0) - return ret; - } - - sdev->index = atomic_inc_return(&device_count); - sdev->dev = device_create(switch_class, NULL, - MKDEV(0, sdev->index), NULL, sdev->name); - if (IS_ERR(sdev->dev)) - return PTR_ERR(sdev->dev); - - ret = device_create_file(sdev->dev, &dev_attr_state); - if (ret < 0) - goto err_create_file_1; - ret = device_create_file(sdev->dev, &dev_attr_name); - if (ret < 0) - goto err_create_file_2; - - dev_set_drvdata(sdev->dev, sdev); - sdev->state = 0; - return 0; - -err_create_file_2: - device_remove_file(sdev->dev, &dev_attr_state); -err_create_file_1: - device_destroy(switch_class, MKDEV(0, sdev->index)); - printk(KERN_ERR "switch: Failed to register driver %s\n", sdev->name); - - return ret; -} -EXPORT_SYMBOL_GPL(switch_dev_register); - -void switch_dev_unregister(struct switch_dev *sdev) -{ - device_remove_file(sdev->dev, &dev_attr_name); - device_remove_file(sdev->dev, &dev_attr_state); - device_destroy(switch_class, MKDEV(0, sdev->index)); - dev_set_drvdata(sdev->dev, NULL); -} -EXPORT_SYMBOL_GPL(switch_dev_unregister); - -static int __init switch_class_init(void) -{ - return create_switch_class(); -} - -static void __exit switch_class_exit(void) -{ - class_destroy(switch_class); -} - -module_init(switch_class_init); -module_exit(switch_class_exit); - -MODULE_AUTHOR("Mike Lockwood <lockwood@android.com>"); -MODULE_DESCRIPTION("Switch class driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/staging/android/switch/switch_gpio.c b/drivers/staging/android/switch/switch_gpio.c deleted file mode 100644 index 38b2c2f..0000000 --- a/drivers/staging/android/switch/switch_gpio.c +++ /dev/null @@ -1,172 +0,0 @@ -/* - * switch_gpio.c - * - * Copyright (C) 2008 Google, Inc. - * Author: Mike Lockwood <lockwood@android.com> - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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/module.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/platform_device.h> -#include <linux/slab.h> -#include <linux/workqueue.h> -#include <linux/gpio.h> -#include "switch.h" - -struct gpio_switch_data { - struct switch_dev sdev; - unsigned gpio; - const char *name_on; - const char *name_off; - const char *state_on; - const char *state_off; - int irq; - struct work_struct work; -}; - -static void gpio_switch_work(struct work_struct *work) -{ - int state; - struct gpio_switch_data *data = - container_of(work, struct gpio_switch_data, work); - - state = gpio_get_value(data->gpio); - switch_set_state(&data->sdev, state); -} - -static irqreturn_t gpio_irq_handler(int irq, void *dev_id) -{ - struct gpio_switch_data *switch_data = - (struct gpio_switch_data *)dev_id; - - schedule_work(&switch_data->work); - return IRQ_HANDLED; -} - -static ssize_t switch_gpio_print_state(struct switch_dev *sdev, char *buf) -{ - struct gpio_switch_data *switch_data = - container_of(sdev, struct gpio_switch_data, sdev); - const char *state; - if (switch_get_state(sdev)) - state = switch_data->state_on; - else - state = switch_data->state_off; - - if (state) - return sprintf(buf, "%s\n", state); - return -1; -} - -static int gpio_switch_probe(struct platform_device *pdev) -{ - struct gpio_switch_platform_data *pdata = pdev->dev.platform_data; - struct gpio_switch_data *switch_data; - int ret = 0; - - if (!pdata) - return -EBUSY; - - switch_data = kzalloc(sizeof(struct gpio_switch_data), GFP_KERNEL); - if (!switch_data) - return -ENOMEM; - - switch_data->sdev.name = pdata->name; - switch_data->gpio = pdata->gpio; - switch_data->name_on = pdata->name_on; - switch_data->name_off = pdata->name_off; - switch_data->state_on = pdata->state_on; - switch_data->state_off = pdata->state_off; - switch_data->sdev.print_state = switch_gpio_print_state; - - ret = switch_dev_register(&switch_data->sdev); - if (ret < 0) - goto err_switch_dev_register; - - ret = gpio_request(switch_data->gpio, pdev->name); - if (ret < 0) - goto err_request_gpio; - - ret = gpio_direction_input(switch_data->gpio); - if (ret < 0) - goto err_set_gpio_input; - - INIT_WORK(&switch_data->work, gpio_switch_work); - - switch_data->irq = gpio_to_irq(switch_data->gpio); - if (switch_data->irq < 0) { - ret = switch_data->irq; - goto err_detect_irq_num_failed; - } - - ret = request_irq(switch_data->irq, gpio_irq_handler, - IRQF_TRIGGER_LOW, pdev->name, switch_data); - if (ret < 0) - goto err_request_irq; - - /* Perform initial detection */ - gpio_switch_work(&switch_data->work); - - return 0; - -err_request_irq: -err_detect_irq_num_failed: -err_set_gpio_input: - gpio_free(switch_data->gpio); -err_request_gpio: - switch_dev_unregister(&switch_data->sdev); -err_switch_dev_register: - kfree(switch_data); - - return ret; -} - -static int __devexit gpio_switch_remove(struct platform_device *pdev) -{ - struct gpio_switch_data *switch_data = platform_get_drvdata(pdev); - - cancel_work_sync(&switch_data->work); - gpio_free(switch_data->gpio); - switch_dev_unregister(&switch_data->sdev); - kfree(switch_data); - - return 0; -} - -static struct platform_driver gpio_switch_driver = { - .probe = gpio_switch_probe, - .remove = __devexit_p(gpio_switch_remove), - .driver = { - .name = "switch-gpio", - .owner = THIS_MODULE, - }, -}; - -static int __init gpio_switch_init(void) -{ - return platform_driver_register(&gpio_switch_driver); -} - -static void __exit gpio_switch_exit(void) -{ - platform_driver_unregister(&gpio_switch_driver); -} - -module_init(gpio_switch_init); -module_exit(gpio_switch_exit); - -MODULE_AUTHOR("Mike Lockwood <lockwood@android.com>"); -MODULE_DESCRIPTION("GPIO Switch driver"); -MODULE_LICENSE("GPL"); |