sony_acpi: Avoid dimness on resume.

Doesn't work.

Cc: Stelian Pop <stelian@popies.net>
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, 34 insertions, 15 deletions

diff --git a/drivers/acpi/sony_acpi.c b/drivers/acpi/sony_acpi.c
index e23522a02965..beb56b9df5c8 100644
--- a/drivers/acpi/sony_acpi.c
+++ b/drivers/acpi/sony_acpi.c
@@ -46,19 +46,6 @@ module_param(debug, int, 0);
 MODULE_PARM_DESC(debug, "set this to 1 (and RTFM) if you want to help "
                         "the development of this driver");
 
-static int sony_acpi_add (struct acpi_device *device);
-static int sony_acpi_remove (struct acpi_device *device, int type);
-
-static struct acpi_driver sony_acpi_driver = {
-        .name   = ACPI_SNC_DRIVER_NAME,
-        .class  = ACPI_SNC_CLASS,
-        .ids    = ACPI_SNC_HID,
-        .ops    = {
-                        .add    = sony_acpi_add,
-                        .remove = sony_acpi_remove,
-                  },
-};
-
 static acpi_handle sony_acpi_handle;
 static struct proc_dir_entry *sony_acpi_dir;
 
@@ -69,6 +56,8 @@ static struct sony_acpi_value {
         char                    *acpiset;/* name of the ACPI get function */
         int                     min;     /* minimum allowed value or -1 */
         int                     max;     /* maximum allowed value or -1 */
+        int                     value;   /* current setting */
+        int                     valid;   /* Has ever been set */
         int                     debug;   /* active only in debug mode ? */
 } sony_acpi_values[] = {
         {
@@ -239,10 +228,30 @@ static int sony_acpi_write(struct file *file, const char __user *buffer,
 
         if (acpi_callsetfunc(sony_acpi_handle, item->acpiset, value, NULL) < 0)
                 return -EIO;
-
+        item->value = value;
+        item->valid = 1;
         return count;
 }
 
+static int sony_acpi_resume(struct acpi_device *device, int state)
+{
+        struct sony_acpi_value *item;
+
+        for (item = sony_acpi_values; item->name; item++) {
+                int ret;
+
+                if (!item->valid)
+                        continue;
+                ret = acpi_callsetfunc(sony_acpi_handle, item->acpiset,
+                                        item->value, NULL);
+                if (ret < 0) {
+                        printk("%s: %d\n", __FUNCTION__, ret);
+                        break;
+                }
+        }
+        return 0;
+}
+
 static void sony_acpi_notify(acpi_handle handle, u32 event, void *data)
 {
         printk(LOG_PFX "sony_acpi_notify\n");
@@ -344,7 +353,6 @@ outwalk:
         return result;
 }
 
-
 static int sony_acpi_remove(struct acpi_device *device, int type)
 {
         acpi_status status;
@@ -367,6 +375,17 @@ static int sony_acpi_remove(struct acpi_device *device, int type)
         return 0;
 }
 
+static struct acpi_driver sony_acpi_driver = {
+        .name   = ACPI_SNC_DRIVER_NAME,
+        .class  = ACPI_SNC_CLASS,
+        .ids    = ACPI_SNC_HID,
+        .ops    = {
+                        .add    = sony_acpi_add,
+                        .remove = sony_acpi_remove,
+                        .resume = sony_acpi_resume,
+                  },
+};
+
 static int __init sony_acpi_init(void)
 {
         int result;