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, 302 insertions, 0 deletions

diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
new file mode 100644
index 000000000000..14192ee55f8f
--- /dev/null
+++ b/drivers/acpi/fan.c
@@ -0,0 +1,302 @@
+/*
+ *  acpi_fan.c - ACPI Fan Driver ($Revision: 29 $)
+ *
+ *  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 <asm/uaccess.h>
+
+#include <acpi/acpi_bus.h>
+#include <acpi/acpi_drivers.h>
+
+
+#define ACPI_FAN_COMPONENT              0x00200000
+#define ACPI_FAN_CLASS                  "fan"
+#define ACPI_FAN_HID                    "PNP0C0B"
+#define ACPI_FAN_DRIVER_NAME            "ACPI Fan Driver"
+#define ACPI_FAN_DEVICE_NAME            "Fan"
+#define ACPI_FAN_FILE_STATE             "state"
+#define ACPI_FAN_NOTIFY_STATUS          0x80
+
+#define _COMPONENT              ACPI_FAN_COMPONENT
+ACPI_MODULE_NAME                ("acpi_fan")
+
+MODULE_AUTHOR("Paul Diefenbaugh");
+MODULE_DESCRIPTION(ACPI_FAN_DRIVER_NAME);
+MODULE_LICENSE("GPL");
+
+static int acpi_fan_add (struct acpi_device *device);
+static int acpi_fan_remove (struct acpi_device *device, int type);
+
+static struct acpi_driver acpi_fan_driver = {
+        .name =         ACPI_FAN_DRIVER_NAME,
+        .class =        ACPI_FAN_CLASS,
+        .ids =          ACPI_FAN_HID,
+        .ops =          {
+                                .add =          acpi_fan_add,
+                                .remove =       acpi_fan_remove,
+                        },
+};
+
+struct acpi_fan {
+        acpi_handle             handle;
+};
+
+
+/* --------------------------------------------------------------------------
+                              FS Interface (/proc)
+   -------------------------------------------------------------------------- */
+
+static struct proc_dir_entry    *acpi_fan_dir;
+
+
+static int
+acpi_fan_read_state (struct seq_file *seq, void *offset)
+{
+        struct acpi_fan         *fan = seq->private;
+        int                     state = 0;
+
+        ACPI_FUNCTION_TRACE("acpi_fan_read_state");
+
+        if (fan) {
+                if (acpi_bus_get_power(fan->handle, &state))
+                        seq_printf(seq, "status:                  ERROR\n");
+                else
+                        seq_printf(seq, "status:                  %s\n",
+                                     !state?"on":"off");
+        }
+        return_VALUE(0);
+}
+
+static int acpi_fan_state_open_fs(struct inode *inode, struct file *file)
+{
+        return single_open(file, acpi_fan_read_state, PDE(inode)->data);
+}
+
+static ssize_t
+acpi_fan_write_state (
+        struct file             *file,
+        const char              __user *buffer,
+        size_t                  count,
+        loff_t                  *ppos)
+{
+        int                     result = 0;
+        struct seq_file         *m = (struct seq_file *)file->private_data;
+        struct acpi_fan         *fan = (struct acpi_fan *) m->private;
+        char                    state_string[12] = {'\0'};
+
+        ACPI_FUNCTION_TRACE("acpi_fan_write_state");
+
+        if (!fan || (count > sizeof(state_string) - 1))
+                return_VALUE(-EINVAL);
+        
+        if (copy_from_user(state_string, buffer, count))
+                return_VALUE(-EFAULT);
+        
+        state_string[count] = '\0';
+        
+        result = acpi_bus_set_power(fan->handle, 
+                simple_strtoul(state_string, NULL, 0));
+        if (result)
+                return_VALUE(result);
+
+        return_VALUE(count);
+}
+
+static struct file_operations acpi_fan_state_ops = {
+        .open           = acpi_fan_state_open_fs,
+        .read           = seq_read,
+        .write          = acpi_fan_write_state,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+        .owner = THIS_MODULE,
+};
+
+static int
+acpi_fan_add_fs (
+        struct acpi_device      *device)
+{
+        struct proc_dir_entry   *entry = NULL;
+
+        ACPI_FUNCTION_TRACE("acpi_fan_add_fs");
+
+        if (!device)
+                return_VALUE(-EINVAL);
+
+        if (!acpi_device_dir(device)) {
+                acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
+                        acpi_fan_dir);
+                if (!acpi_device_dir(device))
+                        return_VALUE(-ENODEV);
+                acpi_device_dir(device)->owner = THIS_MODULE;
+        }
+
+        /* 'status' [R/W] */
+        entry = create_proc_entry(ACPI_FAN_FILE_STATE,
+                S_IFREG|S_IRUGO|S_IWUSR, acpi_device_dir(device));
+        if (!entry)
+                ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+                        "Unable to create '%s' fs entry\n",
+                        ACPI_FAN_FILE_STATE));
+        else {
+                entry->proc_fops = &acpi_fan_state_ops;
+                entry->data = acpi_driver_data(device);
+                entry->owner = THIS_MODULE;
+        }
+
+        return_VALUE(0);
+}
+
+
+static int
+acpi_fan_remove_fs (
+        struct acpi_device      *device)
+{
+        ACPI_FUNCTION_TRACE("acpi_fan_remove_fs");
+
+        if (acpi_device_dir(device)) {
+                remove_proc_entry(ACPI_FAN_FILE_STATE,
+                                  acpi_device_dir(device));
+                remove_proc_entry(acpi_device_bid(device), acpi_fan_dir);
+                acpi_device_dir(device) = NULL;
+        }
+
+        return_VALUE(0);
+}
+
+
+/* --------------------------------------------------------------------------
+                                 Driver Interface
+   -------------------------------------------------------------------------- */
+
+static int
+acpi_fan_add (
+        struct acpi_device      *device)
+{
+        int                     result = 0;
+        struct acpi_fan         *fan = NULL;
+        int                     state = 0;
+
+        ACPI_FUNCTION_TRACE("acpi_fan_add");
+
+        if (!device)
+                return_VALUE(-EINVAL);
+
+        fan = kmalloc(sizeof(struct acpi_fan), GFP_KERNEL);
+        if (!fan)
+                return_VALUE(-ENOMEM);
+        memset(fan, 0, sizeof(struct acpi_fan));
+
+        fan->handle = device->handle;
+        strcpy(acpi_device_name(device), ACPI_FAN_DEVICE_NAME);
+        strcpy(acpi_device_class(device), ACPI_FAN_CLASS);
+        acpi_driver_data(device) = fan;
+
+        result = acpi_bus_get_power(fan->handle, &state);
+        if (result) {
+                ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+                        "Error reading power state\n"));
+                goto end;
+        }
+
+        result = acpi_fan_add_fs(device);
+        if (result)
+                goto end;
+
+        printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
+                acpi_device_name(device), acpi_device_bid(device),
+                !device->power.state?"on":"off");
+
+end:
+        if (result)
+                kfree(fan);
+
+        return_VALUE(result);
+}
+
+
+static int
+acpi_fan_remove (
+        struct acpi_device      *device,
+        int                     type)
+{
+        struct acpi_fan         *fan = NULL;
+
+        ACPI_FUNCTION_TRACE("acpi_fan_remove");
+
+        if (!device || !acpi_driver_data(device))
+                return_VALUE(-EINVAL);
+
+        fan = (struct acpi_fan *) acpi_driver_data(device);
+
+        acpi_fan_remove_fs(device);
+
+        kfree(fan);
+
+        return_VALUE(0);
+}
+
+
+static int __init
+acpi_fan_init (void)
+{
+        int                     result = 0;
+
+        ACPI_FUNCTION_TRACE("acpi_fan_init");
+
+        acpi_fan_dir = proc_mkdir(ACPI_FAN_CLASS, acpi_root_dir);
+        if (!acpi_fan_dir)
+                return_VALUE(-ENODEV);
+        acpi_fan_dir->owner = THIS_MODULE;
+
+        result = acpi_bus_register_driver(&acpi_fan_driver);
+        if (result < 0) {
+                remove_proc_entry(ACPI_FAN_CLASS, acpi_root_dir);
+                return_VALUE(-ENODEV);
+        }
+
+        return_VALUE(0);
+}
+
+
+static void __exit
+acpi_fan_exit (void)
+{
+        ACPI_FUNCTION_TRACE("acpi_fan_exit");
+
+        acpi_bus_unregister_driver(&acpi_fan_driver);
+
+        remove_proc_entry(ACPI_FAN_CLASS, acpi_root_dir);
+
+        return_VOID;
+}
+
+
+module_init(acpi_fan_init);
+module_exit(acpi_fan_exit);
+