Revert "htcleo: some bugfixes and cleanups on backlight manager driver"

This reverts commit 864e077367f6dc567c5bce2501856225375a3e20.
This commit is contained in:
tytung 2011-02-17 21:12:34 +08:00
parent 0162818a8a
commit 2bbd73cdec

View File

@ -1,187 +0,0 @@
/* board-htcleo_btn_backlight-manager.c
*
* Driver for managing buttons backlight
*
* Copyright (C) 2010 Danijel Posilović (dan1j3l) <danijel.posilovic@gmail.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/keyboard.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/workqueue.h>
#include <linux/delay.h>
#include <linux/timer.h>
static int BUTTON_BACKLIGHT_GPIO = 48;
static int OFF_SEC = 10;
static int auto_off_enabled = 1;
struct timer_list btn_off_timer;
static DEFINE_MUTEX(htcleo_btn_manager_lock);
////////////////////////////////////////////////////
// off_sec sysfs
static ssize_t htcleo_manager_offsec_get(struct device *dev,struct device_attribute *attr, char *buf)
{
int ret;
ret = sprintf(buf, "%d", OFF_SEC);
return ret;
}
static ssize_t htcleo_manager_offsec_set(struct device *dev,struct device_attribute *attr,const char *buf, size_t count)
{
int set_state;
mutex_lock(&htcleo_btn_manager_lock);
sscanf(buf, "%d", &set_state);
if (set_state < 5)
set_state = 5;
if (set_state > 60)
set_state=60;
OFF_SEC = set_state;
mutex_unlock(&htcleo_btn_manager_lock);
return count;
}
static DEVICE_ATTR(off_seconds, 0666, htcleo_manager_offsec_get, htcleo_manager_offsec_set);
// auto_off sysfs
static ssize_t htcleo_manager_auto_off_get(struct device *dev,struct device_attribute *attr, char *buf)
{
int ret;
ret = sprintf(buf, "%d", auto_off_enabled);
return ret;
}
static ssize_t htcleo_manager_auto_off_set(struct device *dev,struct device_attribute *attr,const char *buf, size_t count)
{
int set_state;
mutex_lock(&htcleo_btn_manager_lock);
sscanf(buf, "%d", &set_state);
if (set_state < 0)
set_state = 0;
if (set_state > 1)
set_state=1;
auto_off_enabled = set_state;
mutex_unlock(&htcleo_btn_manager_lock);
return count;
}
static DEVICE_ATTR(auto_off, 0666, htcleo_manager_auto_off_get, htcleo_manager_auto_off_set);
static void btn_delayed_off_function(unsigned long function_parameter){
gpio_set_value(BUTTON_BACKLIGHT_GPIO, 0);
del_timer(&btn_off_timer);
}
int buttons_notify(struct notifier_block *nblock, unsigned long code, void *_param) {
struct keyboard_notifier_param *param = _param;
int keycode;
if (code == KBD_KEYCODE) {
keycode = param->value;
//printk(KERN_DEBUG "BTN-BCKM: KEYLOGGER %i %s\n", param->value, (param->down ? "down" : "up"));
// Turn backlight on only if pressed = Dial, home, winkey, back, end button
if (keycode==231 || keycode==102 || keycode==139 || keycode==158 || keycode==107 ){
gpio_set_value(BUTTON_BACKLIGHT_GPIO, 1);
// If auto off enabled then buttons will turn off after declared amount of time, else screen backlight will turn them off
if (auto_off_enabled){
del_timer(&btn_off_timer);
init_timer(&btn_off_timer);
btn_off_timer.expires = jiffies + OFF_SEC*HZ;
btn_off_timer.function = btn_delayed_off_function;
add_timer(&btn_off_timer);
}
}
};
return 0;
}
static struct notifier_block nb = {
.notifier_call = buttons_notify
};
static int htcleo_btn_backlight_manager_probe(struct platform_device *pdev)
{
int rc;
printk("BTN-BCKM: Registering btn manager...\n");
register_keyboard_notifier(&nb);
rc = device_create_file(&pdev->dev, &dev_attr_off_seconds);
rc = device_create_file(&pdev->dev, &dev_attr_auto_off);
return 0;
}
static int htcleo_btn_backlight_manager_remove(struct platform_device *pdev)
{
printk("BTN-BCKM: Deactivating btn manager...\n");
unregister_keyboard_notifier(&nb);
device_remove_file(&pdev->dev, &dev_attr_off_seconds);
device_remove_file(&pdev->dev,&dev_attr_auto_off);
return 0;
}
static struct platform_driver htcleo_btn_backlight_manager = {
.probe = htcleo_btn_backlight_manager_probe,
.remove= htcleo_btn_backlight_manager_remove,
.driver = {
.name = "btn_backlight_manager",
.owner = THIS_MODULE
},
};
static int __init backlight_manager_init(void)
{
return platform_driver_register(&htcleo_btn_backlight_manager);
}
static void __exit backlight_manager_exit(void)
{
platform_driver_unregister(&htcleo_btn_backlight_manager);
}
module_init(backlight_manager_init);
module_exit(backlight_manager_exit);
MODULE_AUTHOR("Danijel Posilović (dan1j3l) <danijel.posilovic@gmail.com>");
MODULE_DESCRIPTION("Button Backlight Manager");
MODULE_LICENSE("GPL");