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!

1 files changed, 558 insertions, 0 deletions

diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
new file mode 100644
index 000000000000..ec4430e3053f
--- /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);