Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
new file mode 100644
index 0000000..ec4430e
--- /dev/null
+++ b/drivers/acpi/button.c
@@ -0,0 +1,558 @@
+/*
+ * acpi_button.c - ACPI Button Driver ($Revision: 30 $)
+ *
+ * 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 <acpi/acpi_bus.h>
+#include <acpi/acpi_drivers.h>
+
+
+#define ACPI_BUTTON_COMPONENT 0x00080000
+#define ACPI_BUTTON_DRIVER_NAME "ACPI Button Driver"
+#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 (CM)"
+#define ACPI_BUTTON_DEVICE_NAME_POWERF "Power Button (FF)"
+#define ACPI_BUTTON_TYPE_POWER 0x01
+#define ACPI_BUTTON_TYPE_POWERF 0x02
+
+#define ACPI_BUTTON_SUBCLASS_SLEEP "sleep"
+#define ACPI_BUTTON_HID_SLEEP "PNP0C0E"
+#define ACPI_BUTTON_DEVICE_NAME_SLEEP "Sleep Button (CM)"
+#define ACPI_BUTTON_DEVICE_NAME_SLEEPF "Sleep Button (FF)"
+#define ACPI_BUTTON_TYPE_SLEEP 0x03
+#define ACPI_BUTTON_TYPE_SLEEPF 0x04
+
+#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 ("acpi_button")
+
+MODULE_AUTHOR("Paul Diefenbaugh");
+MODULE_DESCRIPTION(ACPI_BUTTON_DRIVER_NAME);
+MODULE_LICENSE("GPL");
+
+
+static int acpi_button_add (struct acpi_device *device);
+static int acpi_button_remove (struct acpi_device *device, int type);
+static int acpi_button_info_open_fs(struct inode *inode, struct file *file);
+static int acpi_button_state_open_fs(struct inode *inode, struct file *file);
+
+static struct acpi_driver acpi_button_driver = {
+ .name = ACPI_BUTTON_DRIVER_NAME,
+ .class = ACPI_BUTTON_CLASS,
+ .ids = "ACPI_FPB,ACPI_FSB,PNP0C0D,PNP0C0C,PNP0C0E",
+ .ops = {
+ .add = acpi_button_add,
+ .remove = acpi_button_remove,
+ },
+};
+
+struct acpi_button {
+ acpi_handle handle;
+ struct acpi_device *device; /* Fixed button kludge */
+ u8 type;
+ unsigned long pushed;
+};
+
+static struct file_operations acpi_button_info_fops = {
+ .open = acpi_button_info_open_fs,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static struct file_operations acpi_button_state_fops = {
+ .open = acpi_button_state_open_fs,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+/* --------------------------------------------------------------------------
+ FS Interface (/proc)
+ -------------------------------------------------------------------------- */
+
+static struct proc_dir_entry *acpi_button_dir;
+
+static int acpi_button_info_seq_show(struct seq_file *seq, void *offset)
+{
+ struct acpi_button *button = (struct acpi_button *) seq->private;
+
+ ACPI_FUNCTION_TRACE("acpi_button_info_seq_show");
+
+ if (!button || !button->device)
+ return_VALUE(0);
+
+ seq_printf(seq, "type: %s\n",
+ acpi_device_name(button->device));
+
+ return_VALUE(0);
+}
+
+static int acpi_button_info_open_fs(struct inode *inode, struct file *file)
+{
+ return single_open(file, acpi_button_info_seq_show, PDE(inode)->data);
+}
+
+static int acpi_button_state_seq_show(struct seq_file *seq, void *offset)
+{
+ struct acpi_button *button = (struct acpi_button *) seq->private;
+ acpi_status status;
+ unsigned long state;
+
+ ACPI_FUNCTION_TRACE("acpi_button_state_seq_show");
+
+ if (!button || !button->device)
+ return_VALUE(0);
+
+ status = acpi_evaluate_integer(button->handle,"_LID",NULL,&state);
+ if (ACPI_FAILURE(status)) {
+ seq_printf(seq, "state: unsupported\n");
+ }
+ else{
+ seq_printf(seq, "state: %s\n", (state ? "open" : "closed"));
+ }
+
+ return_VALUE(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 int
+acpi_button_add_fs (
+ struct acpi_device *device)
+{
+ struct proc_dir_entry *entry = NULL;
+ struct acpi_button *button = NULL;
+
+ ACPI_FUNCTION_TRACE("acpi_button_add_fs");
+
+ if (!device || !acpi_driver_data(device))
+ return_VALUE(-EINVAL);
+
+ button = acpi_driver_data(device);
+
+ switch (button->type) {
+ case ACPI_BUTTON_TYPE_POWER:
+ case ACPI_BUTTON_TYPE_POWERF:
+ entry = proc_mkdir(ACPI_BUTTON_SUBCLASS_POWER,
+ acpi_button_dir);
+ break;
+ case ACPI_BUTTON_TYPE_SLEEP:
+ case ACPI_BUTTON_TYPE_SLEEPF:
+ entry = proc_mkdir(ACPI_BUTTON_SUBCLASS_SLEEP,
+ acpi_button_dir);
+ break;
+ case ACPI_BUTTON_TYPE_LID:
+ entry = proc_mkdir(ACPI_BUTTON_SUBCLASS_LID,
+ acpi_button_dir);
+ break;
+ }
+
+ if (!entry)
+ return_VALUE(-ENODEV);
+ entry->owner = THIS_MODULE;
+
+ acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), entry);
+ if (!acpi_device_dir(device))
+ return_VALUE(-ENODEV);
+ acpi_device_dir(device)->owner = THIS_MODULE;
+
+ /* 'info' [R] */
+ entry = create_proc_entry(ACPI_BUTTON_FILE_INFO,
+ S_IRUGO, acpi_device_dir(device));
+ if (!entry)
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Unable to create '%s' fs entry\n",
+ ACPI_BUTTON_FILE_INFO));
+ else {
+ entry->proc_fops = &acpi_button_info_fops;
+ entry->data = acpi_driver_data(device);
+ entry->owner = THIS_MODULE;
+ }
+
+ /* show lid state [R] */
+ if (button->type == ACPI_BUTTON_TYPE_LID) {
+ entry = create_proc_entry(ACPI_BUTTON_FILE_STATE,
+ S_IRUGO, acpi_device_dir(device));
+ if (!entry)
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Unable to create '%s' fs entry\n",
+ ACPI_BUTTON_FILE_INFO));
+ else {
+ entry->proc_fops = &acpi_button_state_fops;
+ entry->data = acpi_driver_data(device);
+ entry->owner = THIS_MODULE;
+ }
+ }
+
+ return_VALUE(0);
+}
+
+
+static int
+acpi_button_remove_fs (
+ struct acpi_device *device)
+{
+ struct acpi_button *button = NULL;
+
+ ACPI_FUNCTION_TRACE("acpi_button_remove_fs");
+
+ button = acpi_driver_data(device);
+ if (acpi_device_dir(device)) {
+ if (button->type == ACPI_BUTTON_TYPE_LID)
+ remove_proc_entry(ACPI_BUTTON_FILE_STATE,
+ acpi_device_dir(device));
+ remove_proc_entry(ACPI_BUTTON_FILE_INFO,
+ acpi_device_dir(device));
+
+ remove_proc_entry(acpi_device_bid(device),
+ acpi_device_dir(device)->parent);
+
+
+ switch (button->type) {
+ case ACPI_BUTTON_TYPE_POWER:
+ case ACPI_BUTTON_TYPE_POWERF:
+ remove_proc_entry(ACPI_BUTTON_SUBCLASS_POWER,
+ acpi_button_dir);
+ break;
+ case ACPI_BUTTON_TYPE_SLEEP:
+ case ACPI_BUTTON_TYPE_SLEEPF:
+ remove_proc_entry(ACPI_BUTTON_SUBCLASS_SLEEP,
+ acpi_button_dir);
+ break;
+ case ACPI_BUTTON_TYPE_LID:
+ remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID,
+ acpi_button_dir);
+ break;
+ }
+ acpi_device_dir(device) = NULL;
+ }
+
+ return_VALUE(0);
+}
+
+
+/* --------------------------------------------------------------------------
+ Driver Interface
+ -------------------------------------------------------------------------- */
+
+static void
+acpi_button_notify (
+ acpi_handle handle,
+ u32 event,
+ void *data)
+{
+ struct acpi_button *button = (struct acpi_button *) data;
+
+ ACPI_FUNCTION_TRACE("acpi_button_notify");
+
+ if (!button || !button->device)
+ return_VOID;
+
+ switch (event) {
+ case ACPI_BUTTON_NOTIFY_STATUS:
+ acpi_bus_generate_event(button->device, event, ++button->pushed);
+ break;
+ default:
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Unsupported event [0x%x]\n", event));
+ break;
+ }
+
+ return_VOID;
+}
+
+
+static acpi_status
+acpi_button_notify_fixed (
+ void *data)
+{
+ struct acpi_button *button = (struct acpi_button *) data;
+
+ ACPI_FUNCTION_TRACE("acpi_button_notify_fixed");
+
+ if (!button)
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
+
+ acpi_button_notify(button->handle, ACPI_BUTTON_NOTIFY_STATUS, button);
+
+ return_ACPI_STATUS(AE_OK);
+}
+
+
+static int
+acpi_button_add (
+ struct acpi_device *device)
+{
+ int result = 0;
+ acpi_status status = AE_OK;
+ struct acpi_button *button = NULL;
+
+ static struct acpi_device *power_button;
+ static struct acpi_device *sleep_button;
+ static struct acpi_device *lid_button;
+
+ ACPI_FUNCTION_TRACE("acpi_button_add");
+
+ if (!device)
+ return_VALUE(-EINVAL);
+
+ button = kmalloc(sizeof(struct acpi_button), GFP_KERNEL);
+ if (!button)
+ return_VALUE(-ENOMEM);
+ memset(button, 0, sizeof(struct acpi_button));
+
+ button->device = device;
+ button->handle = device->handle;
+ acpi_driver_data(device) = button;
+
+ /*
+ * Determine the button type (via hid), as fixed-feature buttons
+ * need to be handled a bit differently than generic-space.
+ */
+ if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_POWER)) {
+ button->type = ACPI_BUTTON_TYPE_POWER;
+ strcpy(acpi_device_name(device),
+ ACPI_BUTTON_DEVICE_NAME_POWER);
+ sprintf(acpi_device_class(device), "%s/%s",
+ ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER);
+ }
+ else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_POWERF)) {
+ button->type = ACPI_BUTTON_TYPE_POWERF;
+ strcpy(acpi_device_name(device),
+ ACPI_BUTTON_DEVICE_NAME_POWERF);
+ sprintf(acpi_device_class(device), "%s/%s",
+ ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER);
+ }
+ else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_SLEEP)) {
+ button->type = ACPI_BUTTON_TYPE_SLEEP;
+ strcpy(acpi_device_name(device),
+ ACPI_BUTTON_DEVICE_NAME_SLEEP);
+ sprintf(acpi_device_class(device), "%s/%s",
+ ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP);
+ }
+ else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_SLEEPF)) {
+ button->type = ACPI_BUTTON_TYPE_SLEEPF;
+ strcpy(acpi_device_name(device),
+ ACPI_BUTTON_DEVICE_NAME_SLEEPF);
+ sprintf(acpi_device_class(device), "%s/%s",
+ ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP);
+ }
+ else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_LID)) {
+ button->type = ACPI_BUTTON_TYPE_LID;
+ strcpy(acpi_device_name(device),
+ ACPI_BUTTON_DEVICE_NAME_LID);
+ sprintf(acpi_device_class(device), "%s/%s",
+ ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_LID);
+ }
+ else {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unsupported hid [%s]\n",
+ acpi_device_hid(device)));
+ result = -ENODEV;
+ goto end;
+ }
+
+ /*
+ * Ensure only one button of each type is used.
+ */
+ switch (button->type) {
+ case ACPI_BUTTON_TYPE_POWER:
+ case ACPI_BUTTON_TYPE_POWERF:
+ if (!power_button)
+ power_button = device;
+ else {
+ kfree(button);
+ return_VALUE(-ENODEV);
+ }
+ break;
+ case ACPI_BUTTON_TYPE_SLEEP:
+ case ACPI_BUTTON_TYPE_SLEEPF:
+ if (!sleep_button)
+ sleep_button = device;
+ else {
+ kfree(button);
+ return_VALUE(-ENODEV);
+ }
+ break;
+ case ACPI_BUTTON_TYPE_LID:
+ if (!lid_button)
+ lid_button = device;
+ else {
+ kfree(button);
+ return_VALUE(-ENODEV);
+ }
+ break;
+ }
+
+ result = acpi_button_add_fs(device);
+ if (result)
+ goto end;
+
+ switch (button->type) {
+ case ACPI_BUTTON_TYPE_POWERF:
+ status = acpi_install_fixed_event_handler (
+ ACPI_EVENT_POWER_BUTTON,
+ acpi_button_notify_fixed,
+ button);
+ break;
+ case ACPI_BUTTON_TYPE_SLEEPF:
+ status = acpi_install_fixed_event_handler (
+ ACPI_EVENT_SLEEP_BUTTON,
+ acpi_button_notify_fixed,
+ button);
+ break;
+ default:
+ status = acpi_install_notify_handler (
+ button->handle,
+ ACPI_DEVICE_NOTIFY,
+ acpi_button_notify,
+ button);
+ break;
+ }
+
+ if (ACPI_FAILURE(status)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Error installing notify handler\n"));
+ result = -ENODEV;
+ goto end;
+ }
+
+ if (device->wakeup.flags.valid) {
+ /* Button's GPE is run-wake GPE */
+ acpi_set_gpe_type(device->wakeup.gpe_device,
+ device->wakeup.gpe_number, ACPI_GPE_TYPE_WAKE_RUN);
+ acpi_enable_gpe(device->wakeup.gpe_device,
+ device->wakeup.gpe_number, ACPI_NOT_ISR);
+ device->wakeup.state.enabled = 1;
+ }
+
+ printk(KERN_INFO PREFIX "%s [%s]\n",
+ acpi_device_name(device), acpi_device_bid(device));
+
+end:
+ if (result) {
+ acpi_button_remove_fs(device);
+ kfree(button);
+ }
+
+ return_VALUE(result);
+}
+
+
+static int
+acpi_button_remove (struct acpi_device *device, int type)
+{
+ acpi_status status = 0;
+ struct acpi_button *button = NULL;
+
+ ACPI_FUNCTION_TRACE("acpi_button_remove");
+
+ if (!device || !acpi_driver_data(device))
+ return_VALUE(-EINVAL);
+
+ button = acpi_driver_data(device);
+
+ /* Unregister for device notifications. */
+ switch (button->type) {
+ case ACPI_BUTTON_TYPE_POWERF:
+ status = acpi_remove_fixed_event_handler(
+ ACPI_EVENT_POWER_BUTTON, acpi_button_notify_fixed);
+ break;
+ case ACPI_BUTTON_TYPE_SLEEPF:
+ status = acpi_remove_fixed_event_handler(
+ ACPI_EVENT_SLEEP_BUTTON, acpi_button_notify_fixed);
+ break;
+ default:
+ status = acpi_remove_notify_handler(button->handle,
+ ACPI_DEVICE_NOTIFY, acpi_button_notify);
+ break;
+ }
+
+ if (ACPI_FAILURE(status))
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Error removing notify handler\n"));
+
+ acpi_button_remove_fs(device);
+
+ kfree(button);
+
+ return_VALUE(0);
+}
+
+
+static int __init
+acpi_button_init (void)
+{
+ int result = 0;
+
+ ACPI_FUNCTION_TRACE("acpi_button_init");
+
+ acpi_button_dir = proc_mkdir(ACPI_BUTTON_CLASS, acpi_root_dir);
+ if (!acpi_button_dir)
+ return_VALUE(-ENODEV);
+ acpi_button_dir->owner = THIS_MODULE;
+
+ result = acpi_bus_register_driver(&acpi_button_driver);
+ if (result < 0) {
+ remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
+ return_VALUE(-ENODEV);
+ }
+
+ return_VALUE(0);
+}
+
+
+static void __exit
+acpi_button_exit (void)
+{
+ ACPI_FUNCTION_TRACE("acpi_button_exit");
+
+ acpi_bus_unregister_driver(&acpi_button_driver);
+
+ remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
+
+ return_VOID;
+}
+
+
+module_init(acpi_button_init);
+module_exit(acpi_button_exit);