Linux-2.6.12-rc2v2.6.12-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);