Browse files

missed Power button fix file

  • Loading branch information...
1 parent 44de99e commit 7c54f3b4fbd84ebbe98954173079ab4142cb4539 @mrdeadlocked mrdeadlocked committed Dec 6, 2011
Showing with 155 additions and 0 deletions.
  1. +155 −0 arch/arm/mach-tegra/board-adam-wake.c
View
155 arch/arm/mach-tegra/board-adam-wake.c
@@ -0,0 +1,155 @@
+/*
+ * Copyright (c) 1999-2001 Vojtech Pavlik
+ */
+
+/*
+ * Input driver event debug module - dumps all events into syslog
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Should you need to contact me, the author, you can do so either by
+ * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
+ * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
+ */
+
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/init.h>
+#include <linux/device.h>
+
+#include <linux/mfd/tps6586x.h>
+
+MODULE_AUTHOR("Dane Wagner <dane.wagner@gmail.com>");
+MODULE_DESCRIPTION("Wake adam when power button is pressed");
+MODULE_LICENSE("GPL");
+
+static void adam_wake_do_wake(struct work_struct *work) {
+ // Need to queue this function since i2c is slow and this handler
+ // should be atomic.
+ tps6586x_cancel_sleep();
+}
+DECLARE_WORK(do_wake, adam_wake_do_wake);
+
+static void adam_wake_force_shutdown(struct work_struct *work) {
+ // Need to queue this function since i2c is slow and this handler
+ // should be atomic.
+ tps6586x_power_off();
+}
+DECLARE_DELAYED_WORK(do_shutdown, adam_wake_force_shutdown);
+
+static void adam_wake_event(struct input_handle *handle, unsigned int type, unsigned int code, int value)
+{
+ code = code;
+ if(type == EV_KEY && code == KEY_POWER) {
+ if(!!value) {
+ // button pressed; cancel TPS sleep mode
+ schedule_work(&do_wake);
+ // ... and schedule shutdown if button remains pressed
+ schedule_delayed_work(&do_shutdown, 5*HZ);
+ } else {
+ // button is not longer pressed; cancel shutdown
+ cancel_delayed_work(&do_shutdown);
+ }
+ }
+}
+
+static int adam_wake_connect(struct input_handler *handler, struct input_dev *dev,
+ const struct input_device_id *id)
+{
+ struct input_handle *handle;
+ int error;
+
+ handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
+ if (!handle)
+ return -ENOMEM;
+
+ handle->dev = dev;
+ handle->handler = handler;
+ handle->name = "adam_wake";
+
+ error = input_register_handle(handle);
+ if (error)
+ goto err_free_handle;
+
+ error = input_open_device(handle);
+ if (error)
+ goto err_unregister_handle;
+
+ printk(KERN_DEBUG "adam_wake.c: Connected device: %s (%s at %s)\n",
+ dev_name(&dev->dev),
+ dev->name ?: "unknown",
+ dev->phys ?: "unknown");
+
+ return 0;
+
+ err_unregister_handle:
+ input_unregister_handle(handle);
+ err_free_handle:
+ kfree(handle);
+ return error;
+}
+
+static void adam_wake_disconnect(struct input_handle *handle)
+{
+ printk(KERN_DEBUG "adam_wake.c: Disconnected device: %s\n",
+ dev_name(&handle->dev->dev));
+
+ input_close_device(handle);
+ input_unregister_handle(handle);
+ kfree(handle);
+}
+
+static const struct input_device_id adam_wake_ids[] = {
+ { .driver_info = 1,
+ .vendor = 0x0001,
+ .product = 0x0001,
+ .version = 0x0100,
+ },
+ { }, /* Terminating zero entry */
+};
+
+MODULE_DEVICE_TABLE(input, adam_wake_ids);
+
+static bool adam_wake_match(struct input_handler *handler,
+ struct input_dev *dev) {
+ // TODO: look for EV_KEY: KEY_POWER capability
+ return dev->name && strcmp("gpio-keys", dev->name) == 0;
+}
+
+static struct input_handler adam_wake_handler = {
+ .event = adam_wake_event,
+ .connect = adam_wake_connect,
+ .disconnect = adam_wake_disconnect,
+ .name = "adam_wake",
+ .id_table = adam_wake_ids,
+ .match = adam_wake_match,
+};
+
+static int __init adam_wake_init(void)
+{
+ return input_register_handler(&adam_wake_handler);
+}
+
+static void __exit adam_wake_exit(void)
+{
+ input_unregister_handler(&adam_wake_handler);
+}
+
+module_init(adam_wake_init);
+module_exit(adam_wake_exit);

0 comments on commit 7c54f3b

Please sign in to comment.