sony_acpi: Add acpi_bus_generate event

Added acpi_bus_generate event for forwarding Fn-keys pressed to acpi subsystem,
and made correspondent necessary changes for this to work.

Signed-off-by: Nilton Volpato <nilton.volpato@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 28 insertions, 25 deletions

diff --git a/drivers/acpi/sony_acpi.c b/drivers/acpi/sony_acpi.c
index 195895ca4346..138f2b6184d3 100644
--- a/drivers/acpi/sony_acpi.c
+++ b/drivers/acpi/sony_acpi.c
@@ -54,6 +54,7 @@ MODULE_PARM_DESC(debug, "set this to 1 (and RTFM) if you want to help "
 
 static acpi_handle sony_acpi_handle;
 static struct proc_dir_entry *sony_acpi_dir;
+static struct acpi_device *sony_acpi_acpi_device = NULL;
 
 static int sony_backlight_update_status(struct backlight_device *bd);
 static int sony_backlight_get_brightness(struct backlight_device *bd);
@@ -270,7 +271,9 @@ static int sony_acpi_resume(struct acpi_device *device)
 
 static void sony_acpi_notify(acpi_handle handle, u32 event, void *data)
 {
-        printk(LOG_PFX "sony_acpi_notify\n");
+        if (debug)
+                printk(LOG_PFX "sony_acpi_notify, event: %d\n", event);
+        acpi_bus_generate_event(sony_acpi_acpi_device, 1, event);
 }
 
 static acpi_status sony_walk_callback(acpi_handle handle, u32 level,
@@ -295,6 +298,8 @@ static int sony_acpi_add(struct acpi_device *device)
         acpi_handle handle;
         struct sony_acpi_value *item;
 
+        sony_acpi_acpi_device = device;
+
         sony_acpi_handle = device->handle;
 
         acpi_driver_data(device) = NULL;
@@ -308,16 +313,16 @@ static int sony_acpi_add(struct acpi_device *device)
                         result = -ENODEV;
                         goto outwalk;
                 }
+        }
 
-                status = acpi_install_notify_handler(sony_acpi_handle,
-                                                     ACPI_DEVICE_NOTIFY,
-                                                     sony_acpi_notify,
-                                                     NULL);
-                if (ACPI_FAILURE(status)) {
-                        printk(LOG_PFX "unable to install notify handler\n");
-                        result = -ENODEV;
-                        goto outnotify;
-                }
+        status = acpi_install_notify_handler(sony_acpi_handle,
+                                             ACPI_DEVICE_NOTIFY,
+                                             sony_acpi_notify,
+                                             NULL);
+        if (ACPI_FAILURE(status)) {
+                printk(LOG_PFX "unable to install notify handler\n");
+                result = -ENODEV;
+                goto outnotify;
         }
 
         if (ACPI_SUCCESS(acpi_get_handle(sony_acpi_handle, "GBRT", &handle))) {
@@ -342,7 +347,7 @@ static int sony_acpi_add(struct acpi_device *device)
                                  item->acpiset, &handle)))
                         continue;
 
-                item->proc = create_proc_entry(item->name, 0600,
+                item->proc = create_proc_entry(item->name, 0666,
                                                acpi_device_dir(device));
                 if (!item->proc) {
                         printk(LOG_PFX "unable to create proc entry\n");
@@ -361,13 +366,11 @@ static int sony_acpi_add(struct acpi_device *device)
         return 0;
 
 outproc:
-        if (debug) {
-                status = acpi_remove_notify_handler(sony_acpi_handle,
-                                                    ACPI_DEVICE_NOTIFY,
-                                                    sony_acpi_notify);
-                if (ACPI_FAILURE(status))
-                        printk(LOG_PFX "unable to remove notify handler\n");
-        }
+        status = acpi_remove_notify_handler(sony_acpi_handle,
+                                            ACPI_DEVICE_NOTIFY,
+                                            sony_acpi_notify);
+        if (ACPI_FAILURE(status))
+                printk(LOG_PFX "unable to remove notify handler\n");
 outnotify:
         for (item = sony_acpi_values; item->name; ++item)
                 if (item->proc)
@@ -384,13 +387,13 @@ static int sony_acpi_remove(struct acpi_device *device, int type)
         if (sony_backlight_device)
                 backlight_device_unregister(sony_backlight_device);
 
-        if (debug) {
-                status = acpi_remove_notify_handler(sony_acpi_handle,
-                                                    ACPI_DEVICE_NOTIFY,
-                                                    sony_acpi_notify);
-                if (ACPI_FAILURE(status))
-                        printk(LOG_PFX "unable to remove notify handler\n");
-        }
+        sony_acpi_acpi_device = NULL;
+
+        status = acpi_remove_notify_handler(sony_acpi_handle,
+                                            ACPI_DEVICE_NOTIFY,
+                                            sony_acpi_notify);
+        if (ACPI_FAILURE(status))
+                printk(LOG_PFX "unable to remove notify handler\n");
 
         for (item = sony_acpi_values; item->name; ++item)
                 if (item->proc)