diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/input/mouse/gpio_mouse.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/input/mouse/gpio_mouse.c | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/ANDROID_3.4.5/drivers/input/mouse/gpio_mouse.c b/ANDROID_3.4.5/drivers/input/mouse/gpio_mouse.c deleted file mode 100644 index 39fe9b73..00000000 --- a/ANDROID_3.4.5/drivers/input/mouse/gpio_mouse.c +++ /dev/null @@ -1,187 +0,0 @@ -/* - * Driver for simulating a mouse on GPIO lines. - * - * Copyright (C) 2007 Atmel Corporation - * - * 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/init.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/input-polldev.h> -#include <linux/gpio.h> -#include <linux/gpio_mouse.h> - - -/* - * Timer function which is run every scan_ms ms when the device is opened. - * The dev input variable is set to the the input_dev pointer. - */ -static void gpio_mouse_scan(struct input_polled_dev *dev) -{ - struct gpio_mouse_platform_data *gpio = dev->private; - struct input_dev *input = dev->input; - int x, y; - - if (gpio->bleft >= 0) - input_report_key(input, BTN_LEFT, - gpio_get_value(gpio->bleft) ^ gpio->polarity); - if (gpio->bmiddle >= 0) - input_report_key(input, BTN_MIDDLE, - gpio_get_value(gpio->bmiddle) ^ gpio->polarity); - if (gpio->bright >= 0) - input_report_key(input, BTN_RIGHT, - gpio_get_value(gpio->bright) ^ gpio->polarity); - - x = (gpio_get_value(gpio->right) ^ gpio->polarity) - - (gpio_get_value(gpio->left) ^ gpio->polarity); - y = (gpio_get_value(gpio->down) ^ gpio->polarity) - - (gpio_get_value(gpio->up) ^ gpio->polarity); - - input_report_rel(input, REL_X, x); - input_report_rel(input, REL_Y, y); - input_sync(input); -} - -static int __devinit gpio_mouse_probe(struct platform_device *pdev) -{ - struct gpio_mouse_platform_data *pdata = pdev->dev.platform_data; - struct input_polled_dev *input_poll; - struct input_dev *input; - int pin, i; - int error; - - if (!pdata) { - dev_err(&pdev->dev, "no platform data\n"); - error = -ENXIO; - goto out; - } - - if (pdata->scan_ms < 0) { - dev_err(&pdev->dev, "invalid scan time\n"); - error = -EINVAL; - goto out; - } - - for (i = 0; i < GPIO_MOUSE_PIN_MAX; i++) { - pin = pdata->pins[i]; - - if (pin < 0) { - - if (i <= GPIO_MOUSE_PIN_RIGHT) { - /* Mouse direction is required. */ - dev_err(&pdev->dev, - "missing GPIO for directions\n"); - error = -EINVAL; - goto out_free_gpios; - } - - if (i == GPIO_MOUSE_PIN_BLEFT) - dev_dbg(&pdev->dev, "no left button defined\n"); - - } else { - error = gpio_request(pin, "gpio_mouse"); - if (error) { - dev_err(&pdev->dev, "fail %d pin (%d idx)\n", - pin, i); - goto out_free_gpios; - } - - gpio_direction_input(pin); - } - } - - input_poll = input_allocate_polled_device(); - if (!input_poll) { - dev_err(&pdev->dev, "not enough memory for input device\n"); - error = -ENOMEM; - goto out_free_gpios; - } - - platform_set_drvdata(pdev, input_poll); - - /* set input-polldev handlers */ - input_poll->private = pdata; - input_poll->poll = gpio_mouse_scan; - input_poll->poll_interval = pdata->scan_ms; - - input = input_poll->input; - input->name = pdev->name; - input->id.bustype = BUS_HOST; - input->dev.parent = &pdev->dev; - - input_set_capability(input, EV_REL, REL_X); - input_set_capability(input, EV_REL, REL_Y); - if (pdata->bleft >= 0) - input_set_capability(input, EV_KEY, BTN_LEFT); - if (pdata->bmiddle >= 0) - input_set_capability(input, EV_KEY, BTN_MIDDLE); - if (pdata->bright >= 0) - input_set_capability(input, EV_KEY, BTN_RIGHT); - - error = input_register_polled_device(input_poll); - if (error) { - dev_err(&pdev->dev, "could not register input device\n"); - goto out_free_polldev; - } - - dev_dbg(&pdev->dev, "%d ms scan time, buttons: %s%s%s\n", - pdata->scan_ms, - pdata->bleft < 0 ? "" : "left ", - pdata->bmiddle < 0 ? "" : "middle ", - pdata->bright < 0 ? "" : "right"); - - return 0; - - out_free_polldev: - input_free_polled_device(input_poll); - platform_set_drvdata(pdev, NULL); - - out_free_gpios: - while (--i >= 0) { - pin = pdata->pins[i]; - if (pin) - gpio_free(pin); - } - out: - return error; -} - -static int __devexit gpio_mouse_remove(struct platform_device *pdev) -{ - struct input_polled_dev *input = platform_get_drvdata(pdev); - struct gpio_mouse_platform_data *pdata = input->private; - int pin, i; - - input_unregister_polled_device(input); - input_free_polled_device(input); - - for (i = 0; i < GPIO_MOUSE_PIN_MAX; i++) { - pin = pdata->pins[i]; - if (pin >= 0) - gpio_free(pin); - } - - platform_set_drvdata(pdev, NULL); - - return 0; -} - -static struct platform_driver gpio_mouse_device_driver = { - .probe = gpio_mouse_probe, - .remove = __devexit_p(gpio_mouse_remove), - .driver = { - .name = "gpio_mouse", - .owner = THIS_MODULE, - } -}; -module_platform_driver(gpio_mouse_device_driver); - -MODULE_AUTHOR("Hans-Christian Egtvedt <egtvedt@samfundet.no>"); -MODULE_DESCRIPTION("GPIO mouse driver"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:gpio_mouse"); /* work with hotplug and coldplug */ - |