[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/os/linux/linux-3.4.x/drivers/acpi/button.c b/ap/os/linux/linux-3.4.x/drivers/acpi/button.c
new file mode 100644
index 0000000..d27d072
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/acpi/button.c
@@ -0,0 +1,457 @@
+/*
+ * button.c - ACPI Button Driver
+ *
+ * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
+ * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * 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.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+#include <acpi/acpi_bus.h>
+#include <acpi/acpi_drivers.h>
+
+#define PREFIX "ACPI: "
+
+#define ACPI_BUTTON_CLASS "button"
+#define ACPI_BUTTON_FILE_INFO "info"
+#define ACPI_BUTTON_FILE_STATE "state"
+#define ACPI_BUTTON_TYPE_UNKNOWN 0x00
+#define ACPI_BUTTON_NOTIFY_STATUS 0x80
+
+#define ACPI_BUTTON_SUBCLASS_POWER "power"
+#define ACPI_BUTTON_HID_POWER "PNP0C0C"
+#define ACPI_BUTTON_DEVICE_NAME_POWER "Power Button"
+#define ACPI_BUTTON_TYPE_POWER 0x01
+
+#define ACPI_BUTTON_SUBCLASS_SLEEP "sleep"
+#define ACPI_BUTTON_HID_SLEEP "PNP0C0E"
+#define ACPI_BUTTON_DEVICE_NAME_SLEEP "Sleep Button"
+#define ACPI_BUTTON_TYPE_SLEEP 0x03
+
+#define ACPI_BUTTON_SUBCLASS_LID "lid"
+#define ACPI_BUTTON_HID_LID "PNP0C0D"
+#define ACPI_BUTTON_DEVICE_NAME_LID "Lid Switch"
+#define ACPI_BUTTON_TYPE_LID 0x05
+
+#define _COMPONENT ACPI_BUTTON_COMPONENT
+ACPI_MODULE_NAME("button");
+
+MODULE_AUTHOR("Paul Diefenbaugh");
+MODULE_DESCRIPTION("ACPI Button Driver");
+MODULE_LICENSE("GPL");
+
+static const struct acpi_device_id button_device_ids[] = {
+ {ACPI_BUTTON_HID_LID, 0},
+ {ACPI_BUTTON_HID_SLEEP, 0},
+ {ACPI_BUTTON_HID_SLEEPF, 0},
+ {ACPI_BUTTON_HID_POWER, 0},
+ {ACPI_BUTTON_HID_POWERF, 0},
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, button_device_ids);
+
+static int acpi_button_add(struct acpi_device *device);
+static int acpi_button_remove(struct acpi_device *device, int type);
+static int acpi_button_resume(struct acpi_device *device);
+static void acpi_button_notify(struct acpi_device *device, u32 event);
+
+static struct acpi_driver acpi_button_driver = {
+ .name = "button",
+ .class = ACPI_BUTTON_CLASS,
+ .ids = button_device_ids,
+ .ops = {
+ .add = acpi_button_add,
+ .resume = acpi_button_resume,
+ .remove = acpi_button_remove,
+ .notify = acpi_button_notify,
+ },
+};
+
+struct acpi_button {
+ unsigned int type;
+ struct input_dev *input;
+ char phys[32]; /* for input device */
+ unsigned long pushed;
+ bool wakeup_enabled;
+};
+
+static BLOCKING_NOTIFIER_HEAD(acpi_lid_notifier);
+static struct acpi_device *lid_device;
+
+/* --------------------------------------------------------------------------
+ FS Interface (/proc)
+ -------------------------------------------------------------------------- */
+
+static struct proc_dir_entry *acpi_button_dir;
+static struct proc_dir_entry *acpi_lid_dir;
+
+static int acpi_button_state_seq_show(struct seq_file *seq, void *offset)
+{
+ struct acpi_device *device = seq->private;
+ acpi_status status;
+ unsigned long long state;
+
+ status = acpi_evaluate_integer(device->handle, "_LID", NULL, &state);
+ seq_printf(seq, "state: %s\n",
+ ACPI_FAILURE(status) ? "unsupported" :
+ (state ? "open" : "closed"));
+ return 0;
+}
+
+static int acpi_button_state_open_fs(struct inode *inode, struct file *file)
+{
+ return single_open(file, acpi_button_state_seq_show, PDE(inode)->data);
+}
+
+static const struct file_operations acpi_button_state_fops = {
+ .owner = THIS_MODULE,
+ .open = acpi_button_state_open_fs,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int acpi_button_add_fs(struct acpi_device *device)
+{
+ struct acpi_button *button = acpi_driver_data(device);
+ struct proc_dir_entry *entry = NULL;
+ int ret = 0;
+
+ /* procfs I/F for ACPI lid device only */
+ if (button->type != ACPI_BUTTON_TYPE_LID)
+ return 0;
+
+ if (acpi_button_dir || acpi_lid_dir) {
+ printk(KERN_ERR PREFIX "More than one Lid device found!\n");
+ return -EEXIST;
+ }
+
+ /* create /proc/acpi/button */
+ acpi_button_dir = proc_mkdir(ACPI_BUTTON_CLASS, acpi_root_dir);
+ if (!acpi_button_dir)
+ return -ENODEV;
+
+ /* create /proc/acpi/button/lid */
+ acpi_lid_dir = proc_mkdir(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir);
+ if (!acpi_lid_dir) {
+ ret = -ENODEV;
+ goto remove_button_dir;
+ }
+
+ /* create /proc/acpi/button/lid/LID/ */
+ acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), acpi_lid_dir);
+ if (!acpi_device_dir(device)) {
+ ret = -ENODEV;
+ goto remove_lid_dir;
+ }
+
+ /* create /proc/acpi/button/lid/LID/state */
+ entry = proc_create_data(ACPI_BUTTON_FILE_STATE,
+ S_IRUGO, acpi_device_dir(device),
+ &acpi_button_state_fops, device);
+ if (!entry) {
+ ret = -ENODEV;
+ goto remove_dev_dir;
+ }
+
+done:
+ return ret;
+
+remove_dev_dir:
+ remove_proc_entry(acpi_device_bid(device),
+ acpi_lid_dir);
+ acpi_device_dir(device) = NULL;
+remove_lid_dir:
+ remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir);
+remove_button_dir:
+ remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
+ goto done;
+}
+
+static int acpi_button_remove_fs(struct acpi_device *device)
+{
+ struct acpi_button *button = acpi_driver_data(device);
+
+ if (button->type != ACPI_BUTTON_TYPE_LID)
+ return 0;
+
+ remove_proc_entry(ACPI_BUTTON_FILE_STATE,
+ acpi_device_dir(device));
+ remove_proc_entry(acpi_device_bid(device),
+ acpi_lid_dir);
+ acpi_device_dir(device) = NULL;
+ remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir);
+ remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
+
+ return 0;
+}
+
+/* --------------------------------------------------------------------------
+ Driver Interface
+ -------------------------------------------------------------------------- */
+int acpi_lid_notifier_register(struct notifier_block *nb)
+{
+ return blocking_notifier_chain_register(&acpi_lid_notifier, nb);
+}
+EXPORT_SYMBOL(acpi_lid_notifier_register);
+
+int acpi_lid_notifier_unregister(struct notifier_block *nb)
+{
+ return blocking_notifier_chain_unregister(&acpi_lid_notifier, nb);
+}
+EXPORT_SYMBOL(acpi_lid_notifier_unregister);
+
+int acpi_lid_open(void)
+{
+ acpi_status status;
+ unsigned long long state;
+
+ if (!lid_device)
+ return -ENODEV;
+
+ status = acpi_evaluate_integer(lid_device->handle, "_LID", NULL,
+ &state);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ return !!state;
+}
+EXPORT_SYMBOL(acpi_lid_open);
+
+static int acpi_lid_send_state(struct acpi_device *device)
+{
+ struct acpi_button *button = acpi_driver_data(device);
+ unsigned long long state;
+ acpi_status status;
+ int ret;
+
+ status = acpi_evaluate_integer(device->handle, "_LID", NULL, &state);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ /* input layer checks if event is redundant */
+ input_report_switch(button->input, SW_LID, !state);
+ input_sync(button->input);
+
+ if (state)
+ pm_wakeup_event(&device->dev, 0);
+
+ ret = blocking_notifier_call_chain(&acpi_lid_notifier, state, device);
+ if (ret == NOTIFY_DONE)
+ ret = blocking_notifier_call_chain(&acpi_lid_notifier, state,
+ device);
+ if (ret == NOTIFY_DONE || ret == NOTIFY_OK) {
+ /*
+ * It is also regarded as success if the notifier_chain
+ * returns NOTIFY_OK or NOTIFY_DONE.
+ */
+ ret = 0;
+ }
+ return ret;
+}
+
+static void acpi_button_notify(struct acpi_device *device, u32 event)
+{
+ struct acpi_button *button = acpi_driver_data(device);
+ struct input_dev *input;
+
+ switch (event) {
+ case ACPI_FIXED_HARDWARE_EVENT:
+ event = ACPI_BUTTON_NOTIFY_STATUS;
+ /* fall through */
+ case ACPI_BUTTON_NOTIFY_STATUS:
+ input = button->input;
+ if (button->type == ACPI_BUTTON_TYPE_LID) {
+ acpi_lid_send_state(device);
+ } else {
+ int keycode = test_bit(KEY_SLEEP, input->keybit) ?
+ KEY_SLEEP : KEY_POWER;
+
+ input_report_key(input, keycode, 1);
+ input_sync(input);
+ input_report_key(input, keycode, 0);
+ input_sync(input);
+
+ pm_wakeup_event(&device->dev, 0);
+ }
+
+ acpi_bus_generate_proc_event(device, event, ++button->pushed);
+ break;
+ default:
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Unsupported event [0x%x]\n", event));
+ break;
+ }
+}
+
+static int acpi_button_resume(struct acpi_device *device)
+{
+ struct acpi_button *button = acpi_driver_data(device);
+
+ if (button->type == ACPI_BUTTON_TYPE_LID)
+ return acpi_lid_send_state(device);
+ return 0;
+}
+
+static int acpi_button_add(struct acpi_device *device)
+{
+ struct acpi_button *button;
+ struct input_dev *input;
+ const char *hid = acpi_device_hid(device);
+ char *name, *class;
+ int error;
+
+ button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL);
+ if (!button)
+ return -ENOMEM;
+
+ device->driver_data = button;
+
+ button->input = input = input_allocate_device();
+ if (!input) {
+ error = -ENOMEM;
+ goto err_free_button;
+ }
+
+ name = acpi_device_name(device);
+ class = acpi_device_class(device);
+
+ if (!strcmp(hid, ACPI_BUTTON_HID_POWER) ||
+ !strcmp(hid, ACPI_BUTTON_HID_POWERF)) {
+ button->type = ACPI_BUTTON_TYPE_POWER;
+ strcpy(name, ACPI_BUTTON_DEVICE_NAME_POWER);
+ sprintf(class, "%s/%s",
+ ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER);
+ } else if (!strcmp(hid, ACPI_BUTTON_HID_SLEEP) ||
+ !strcmp(hid, ACPI_BUTTON_HID_SLEEPF)) {
+ button->type = ACPI_BUTTON_TYPE_SLEEP;
+ strcpy(name, ACPI_BUTTON_DEVICE_NAME_SLEEP);
+ sprintf(class, "%s/%s",
+ ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP);
+ } else if (!strcmp(hid, ACPI_BUTTON_HID_LID)) {
+ button->type = ACPI_BUTTON_TYPE_LID;
+ strcpy(name, ACPI_BUTTON_DEVICE_NAME_LID);
+ sprintf(class, "%s/%s",
+ ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_LID);
+ } else {
+ printk(KERN_ERR PREFIX "Unsupported hid [%s]\n", hid);
+ error = -ENODEV;
+ goto err_free_input;
+ }
+
+ error = acpi_button_add_fs(device);
+ if (error)
+ goto err_free_input;
+
+ snprintf(button->phys, sizeof(button->phys), "%s/button/input0", hid);
+
+ input->name = name;
+ input->phys = button->phys;
+ input->id.bustype = BUS_HOST;
+ input->id.product = button->type;
+ input->dev.parent = &device->dev;
+
+ switch (button->type) {
+ case ACPI_BUTTON_TYPE_POWER:
+ input->evbit[0] = BIT_MASK(EV_KEY);
+ set_bit(KEY_POWER, input->keybit);
+ break;
+
+ case ACPI_BUTTON_TYPE_SLEEP:
+ input->evbit[0] = BIT_MASK(EV_KEY);
+ set_bit(KEY_SLEEP, input->keybit);
+ break;
+
+ case ACPI_BUTTON_TYPE_LID:
+ input->evbit[0] = BIT_MASK(EV_SW);
+ set_bit(SW_LID, input->swbit);
+ break;
+ }
+
+ error = input_register_device(input);
+ if (error)
+ goto err_remove_fs;
+ if (button->type == ACPI_BUTTON_TYPE_LID) {
+ acpi_lid_send_state(device);
+ /*
+ * This assumes there's only one lid device, or if there are
+ * more we only care about the last one...
+ */
+ lid_device = device;
+ }
+
+ if (device->wakeup.flags.valid) {
+ /* Button's GPE is run-wake GPE */
+ acpi_enable_gpe(device->wakeup.gpe_device,
+ device->wakeup.gpe_number);
+ if (!device_may_wakeup(&device->dev)) {
+ device_set_wakeup_enable(&device->dev, true);
+ button->wakeup_enabled = true;
+ }
+ }
+
+ printk(KERN_INFO PREFIX "%s [%s]\n", name, acpi_device_bid(device));
+ return 0;
+
+ err_remove_fs:
+ acpi_button_remove_fs(device);
+ err_free_input:
+ input_free_device(input);
+ err_free_button:
+ kfree(button);
+ return error;
+}
+
+static int acpi_button_remove(struct acpi_device *device, int type)
+{
+ struct acpi_button *button = acpi_driver_data(device);
+
+ if (device->wakeup.flags.valid) {
+ acpi_disable_gpe(device->wakeup.gpe_device,
+ device->wakeup.gpe_number);
+ if (button->wakeup_enabled)
+ device_set_wakeup_enable(&device->dev, false);
+ }
+
+ acpi_button_remove_fs(device);
+ input_unregister_device(button->input);
+ kfree(button);
+ return 0;
+}
+
+static int __init acpi_button_init(void)
+{
+ return acpi_bus_register_driver(&acpi_button_driver);
+}
+
+static void __exit acpi_button_exit(void)
+{
+ acpi_bus_unregister_driver(&acpi_button_driver);
+}
+
+module_init(acpi_button_init);
+module_exit(acpi_button_exit);