asus-laptop: allow boot time control of Pegatron ALS sensor

Signed-off-by: Andy Ross <andy.ross@windriver.com>
Signed-off-by: Corentin Chary <corentin.chary@gmail.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c
index 10b0a8663bb7..8327d06b6e8a 100644
--- a/drivers/platform/x86/asus-laptop.c
+++ b/drivers/platform/x86/asus-laptop.c
@@ -85,6 +85,7 @@ static int wlan_status = 1;
 static int bluetooth_status = 1;
 static int wimax_status = -1;
 static int wwan_status = -1;
+static int als_status;
 
 module_param(wlan_status, int, 0444);
 MODULE_PARM_DESC(wlan_status, "Set the wireless status on boot "
@@ -106,6 +107,11 @@ MODULE_PARM_DESC(wwan_status, "Set the wireless status on boot "
                  "(0 = disabled, 1 = enabled, -1 = don't do anything). "
                  "default is 1");
 
+module_param(als_status, int, 0444);
+MODULE_PARM_DESC(als_status, "Set the ALS status on boot "
+                 "(0 = disabled, 1 = enabled). "
+                 "default is 0");
+
 /*
  * Some events we use, same for all Asus
  */
@@ -1472,7 +1478,7 @@ static int __devinit asus_acpi_init(struct asus_laptop *asus)
         asus->ledd_status = 0xFFF;
 
         /* Set initial values of light sensor and level */
-        asus->light_switch = 0; /* Default to light sensor disabled */
+        asus->light_switch = !!als_status;
         asus->light_level = 5;  /* level 5 for sensor sensitivity */
 
         if (asus->is_pega_lucid) {