acer-wmi: Initialize wlan/bluetooth/wwan rfkill software block state

Initial wlan/bluetooth/wwan rfkill software block state when acer-wmi driver
probe. Acer notebook can save the devices state and this patch can use it to
initial the devices' rfkill state.

Signed-off-by: Lee, Chun-Yi <jlee@novell.com>
Acked-by: Thomas Renninger <trenn@suse.de>
Cc: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Matthew Garrett <mjg@redhat.com>

diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
index 583565a..d80db08 100644 (file)
--- a/drivers/platform/x86/acer-wmi.c
+++ b/drivers/platform/x86/acer-wmi.c
@@ -1085,6 +1085,31 @@ static acpi_status wmid3_get_device_status(u32 *value, u16 device)
        return status;
 }
 
+static acpi_status get_device_status(u32 *value, u32 cap)
+{
+       if (wmi_has_guid(WMID_GUID3)) {
+               u16 device;
+
+               switch (cap) {
+               case ACER_CAP_WIRELESS:
+                       device = ACER_WMID3_GDS_WIRELESS;
+                       break;
+               case ACER_CAP_BLUETOOTH:
+                       device = ACER_WMID3_GDS_BLUETOOTH;
+                       break;
+               case ACER_CAP_THREEG:
+                       device = ACER_WMID3_GDS_THREEG;
+                       break;
+               default:
+                       return AE_ERROR;
+               }
+               return wmid3_get_device_status(value, device);
+
+       } else {
+               return get_u32(value, cap);
+       }
+}
+
 /*
  * Rfkill devices
  */
@@ -1135,6 +1160,8 @@ static struct rfkill *acer_rfkill_register(struct device *dev,
 {
        int err;
        struct rfkill *rfkill_dev;
+       u32 state;
+       acpi_status status;
 
        rfkill_dev = rfkill_alloc(name, dev, type,
                                  &acer_rfkill_ops,
@@ -1142,6 +1169,10 @@ static struct rfkill *acer_rfkill_register(struct device *dev,
        if (!rfkill_dev)
                return ERR_PTR(-ENOMEM);
 
+       status = get_device_status(&state, cap);
+       if (ACPI_SUCCESS(status))
+               rfkill_init_sw_state(rfkill_dev, !state);
+
        err = rfkill_register(rfkill_dev);
        if (err) {
                rfkill_destroy(rfkill_dev);