diff options
Diffstat (limited to 'drivers/staging/dream/gpio_event.c')
| -rw-r--r-- | drivers/staging/dream/gpio_event.c | 224 |
1 files changed, 0 insertions, 224 deletions
diff --git a/drivers/staging/dream/gpio_event.c b/drivers/staging/dream/gpio_event.c deleted file mode 100644 index 97a511d11f49..000000000000 --- a/drivers/staging/dream/gpio_event.c +++ /dev/null @@ -1,224 +0,0 @@ -/* drivers/input/misc/gpio_event.c - * - * Copyright (C) 2007 Google, Inc. - * - * 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/slab.h> -#include <linux/module.h> -#include <linux/input.h> -#include <linux/gpio_event.h> -#include <linux/hrtimer.h> -#include <linux/platform_device.h> - -struct gpio_event { - struct input_dev *input_dev; - const struct gpio_event_platform_data *info; - void *state[0]; -}; - -static int gpio_input_event( - struct input_dev *dev, unsigned int type, unsigned int code, int value) -{ - int i; - int ret = 0; - int tmp_ret; - struct gpio_event_info **ii; - struct gpio_event *ip = input_get_drvdata(dev); - - for (i = 0, ii = ip->info->info; i < ip->info->info_count; i++, ii++) { - if ((*ii)->event) { - tmp_ret = (*ii)->event(ip->input_dev, *ii, - &ip->state[i], type, code, value); - if (tmp_ret) - ret = tmp_ret; - } - } - return ret; -} - -static int gpio_event_call_all_func(struct gpio_event *ip, int func) -{ - int i; - int ret; - struct gpio_event_info **ii; - - if (func == GPIO_EVENT_FUNC_INIT || func == GPIO_EVENT_FUNC_RESUME) { - ii = ip->info->info; - for (i = 0; i < ip->info->info_count; i++, ii++) { - if ((*ii)->func == NULL) { - ret = -ENODEV; - pr_err("gpio_event_probe: Incomplete pdata, " - "no function\n"); - goto err_no_func; - } - ret = (*ii)->func(ip->input_dev, *ii, &ip->state[i], - func); - if (ret) { - pr_err("gpio_event_probe: function failed\n"); - goto err_func_failed; - } - } - return 0; - } - - ret = 0; - i = ip->info->info_count; - ii = ip->info->info + i; - while (i > 0) { - i--; - ii--; - (*ii)->func(ip->input_dev, *ii, &ip->state[i], func & ~1); -err_func_failed: -err_no_func: - ; - } - return ret; -} - -#ifdef CONFIG_HAS_EARLYSUSPEND -void gpio_event_suspend(struct early_suspend *h) -{ - struct gpio_event *ip; - ip = container_of(h, struct gpio_event, early_suspend); - gpio_event_call_all_func(ip, GPIO_EVENT_FUNC_SUSPEND); - ip->info->power(ip->info, 0); -} - -void gpio_event_resume(struct early_suspend *h) -{ - struct gpio_event *ip; - ip = container_of(h, struct gpio_event, early_suspend); - ip->info->power(ip->info, 1); - gpio_event_call_all_func(ip, GPIO_EVENT_FUNC_RESUME); -} -#endif - -static int __init gpio_event_probe(struct platform_device *pdev) -{ - int err; - struct gpio_event *ip; - struct input_dev *input_dev; - struct gpio_event_platform_data *event_info; - - event_info = pdev->dev.platform_data; - if (event_info == NULL) { - pr_err("gpio_event_probe: No pdata\n"); - return -ENODEV; - } - if (event_info->name == NULL || - event_info->info == NULL || - event_info->info_count == 0) { - pr_err("gpio_event_probe: Incomplete pdata\n"); - return -ENODEV; - } - ip = kzalloc(sizeof(*ip) + - sizeof(ip->state[0]) * event_info->info_count, GFP_KERNEL); - if (ip == NULL) { - err = -ENOMEM; - pr_err("gpio_event_probe: Failed to allocate private data\n"); - goto err_kp_alloc_failed; - } - platform_set_drvdata(pdev, ip); - - input_dev = input_allocate_device(); - if (input_dev == NULL) { - err = -ENOMEM; - pr_err("gpio_event_probe: Failed to allocate input device\n"); - goto err_input_dev_alloc_failed; - } - input_set_drvdata(input_dev, ip); - ip->input_dev = input_dev; - ip->info = event_info; - if (event_info->power) { -#ifdef CONFIG_HAS_EARLYSUSPEND - ip->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1; - ip->early_suspend.suspend = gpio_event_suspend; - ip->early_suspend.resume = gpio_event_resume; - register_early_suspend(&ip->early_suspend); -#endif - ip->info->power(ip->info, 1); - } - - input_dev->name = ip->info->name; - input_dev->event = gpio_input_event; - - err = gpio_event_call_all_func(ip, GPIO_EVENT_FUNC_INIT); - if (err) - goto err_call_all_func_failed; - - err = input_register_device(input_dev); - if (err) { - pr_err("gpio_event_probe: Unable to register %s input device\n", - input_dev->name); - goto err_input_register_device_failed; - } - - return 0; - -err_input_register_device_failed: - gpio_event_call_all_func(ip, GPIO_EVENT_FUNC_UNINIT); -err_call_all_func_failed: - if (event_info->power) { -#ifdef CONFIG_HAS_EARLYSUSPEND - unregister_early_suspend(&ip->early_suspend); -#endif - ip->info->power(ip->info, 0); - } - input_free_device(input_dev); -err_input_dev_alloc_failed: - kfree(ip); -err_kp_alloc_failed: - return err; -} - -static int gpio_event_remove(struct platform_device *pdev) -{ - struct gpio_event *ip = platform_get_drvdata(pdev); - - gpio_event_call_all_func(ip, GPIO_EVENT_FUNC_UNINIT); - if (ip->info->power) { -#ifdef CONFIG_HAS_EARLYSUSPEND - unregister_early_suspend(&ip->early_suspend); -#endif - ip->info->power(ip->info, 0); - } - input_unregister_device(ip->input_dev); - kfree(ip); - return 0; -} - -static struct platform_driver gpio_event_driver = { - .probe = gpio_event_probe, - .remove = gpio_event_remove, - .driver = { - .name = GPIO_EVENT_DEV_NAME, - }, -}; - -static int __devinit gpio_event_init(void) -{ - return platform_driver_register(&gpio_event_driver); -} - -static void __exit gpio_event_exit(void) -{ - platform_driver_unregister(&gpio_event_driver); -} - -module_init(gpio_event_init); -module_exit(gpio_event_exit); - -MODULE_DESCRIPTION("GPIO Event Driver"); -MODULE_LICENSE("GPL"); - |