sony_acpi: Add backlight support to the sony_acpi v2

Enable the sony_acpi driver to use the backlight subsysyem for adjusting
the monitor brightness.  Old way of changing the brightness will be still
available for compatibility with existing tools.

Signed-off-by: Alessandro Guido <alessandro.guido@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>

diff --git a/drivers/acpi/sony_acpi.c b/drivers/acpi/sony_acpi.c
index d509468..fd7d55a 100644 (file)
--- a/drivers/acpi/sony_acpi.c
+++ b/drivers/acpi/sony_acpi.c
@@ -76,6 +76,14 @@ static struct sony_acpi_value {
        int                     valid;   /* Has ever been set */
        int                     debug;   /* active only in debug mode ? */
 } sony_acpi_values[] = {
+       {
+               .name           = "brightness",
+               .acpiget        = "GBRT",
+               .acpiset        = "SBRT",
+               .min            = 1,
+               .max            = SONY_MAX_BRIGHTNESS,
+               .debug          = 0,
+       },
        {
                .name           = "brightness_default",
                .acpiget        = "GPBR",