1 files changed, 80 insertions, 3 deletions

diff --git a/drivers/acpi/ibm_acpi.c b/drivers/acpi/ibm_acpi.c
index 5cc090326ddc..15fc12482ba0 100644
--- a/drivers/acpi/ibm_acpi.c
+++ b/drivers/acpi/ibm_acpi.c
@@ -160,13 +160,13 @@ IBM_HANDLE(cmos, root, "\\UCMS",	/* R50, R50e, R50p, R51, T4x, X31, X40 */
            "\\CMOS",            /* A3x, G4x, R32, T23, T30, X22-24, X30 */
            "\\CMS",             /* R40, R40e */
     );                          /* all others */
-
+#ifdef CONFIG_ACPI_IBM_DOCK
 IBM_HANDLE(dock, root, "\\_SB.GDCK",    /* X30, X31, X40 */
            "\\_SB.PCI0.DOCK",   /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
            "\\_SB.PCI0.PCI1.DOCK",      /* all others */
            "\\_SB.PCI.ISA.SLCE",        /* 570 */
     );                          /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
-
+#endif
 IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST",        /* 570 */
            "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
            "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
@@ -567,6 +567,69 @@ static int bluetooth_write(char *buf)
         return 0;
 }
 
+static int wan_supported;
+
+static int wan_init(void)
+{
+        wan_supported = hkey_handle &&
+            acpi_evalf(hkey_handle, NULL, "GWAN", "qv");
+
+        return 0;
+}
+
+static int wan_status(void)
+{
+        int status;
+
+        if (!wan_supported ||
+            !acpi_evalf(hkey_handle, &status, "GWAN", "d"))
+                status = 0;
+
+        return status;
+}
+
+static int wan_read(char *p)
+{
+        int len = 0;
+        int status = wan_status();
+
+        if (!wan_supported)
+                len += sprintf(p + len, "status:\t\tnot supported\n");
+        else if (!(status & 1))
+                len += sprintf(p + len, "status:\t\tnot installed\n");
+        else {
+                len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 1));
+                len += sprintf(p + len, "commands:\tenable, disable\n");
+        }
+
+        return len;
+}
+
+static int wan_write(char *buf)
+{
+        int status = wan_status();
+        char *cmd;
+        int do_cmd = 0;
+
+        if (!wan_supported)
+                return -ENODEV;
+
+        while ((cmd = next_cmd(&buf))) {
+                if (strlencmp(cmd, "enable") == 0) {
+                        status |= 2;
+                } else if (strlencmp(cmd, "disable") == 0) {
+                        status &= ~2;
+                } else
+                        return -EINVAL;
+                do_cmd = 1;
+        }
+
+        if (do_cmd && !acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
+                return -EIO;
+
+        return 0;
+}
+
 static int video_supported;
 static int video_orig_autosw;
 
@@ -844,7 +907,7 @@ static int _sta(acpi_handle handle)
 
         return status;
 }
-
+#ifdef CONFIG_ACPI_IBM_DOCK
 #define dock_docked() (_sta(dock_handle) & 1)
 
 static int dock_read(char *p)
@@ -907,6 +970,7 @@ static void dock_notify(struct ibm_struct *ibm, u32 event)
                 acpi_bus_generate_event(ibm->device, event, 0); /* unknown */
         }
 }
+#endif
 
 static int bay_status_supported;
 static int bay_status2_supported;
@@ -1562,6 +1626,13 @@ static struct ibm_struct ibms[] = {
          .write = bluetooth_write,
          },
         {
+         .name = "wan",
+         .init = wan_init,
+         .read = wan_read,
+         .write = wan_write,
+         .experimental = 1,
+         },
+        {
          .name = "video",
          .init = video_init,
          .read = video_read,
@@ -1574,6 +1645,7 @@ static struct ibm_struct ibms[] = {
          .read = light_read,
          .write = light_write,
          },
+#ifdef CONFIG_ACPI_IBM_DOCK
         {
          .name = "dock",
          .read = dock_read,
@@ -1589,6 +1661,7 @@ static struct ibm_struct ibms[] = {
          .handle = &pci_handle,
          .type = ACPI_SYSTEM_NOTIFY,
          },
+#endif
         {
          .name = "bay",
          .init = bay_init,
@@ -1880,7 +1953,9 @@ IBM_PARAM(hotkey);
 IBM_PARAM(bluetooth);
 IBM_PARAM(video);
 IBM_PARAM(light);
+#ifdef CONFIG_ACPI_IBM_DOCK
 IBM_PARAM(dock);
+#endif
 IBM_PARAM(bay);
 IBM_PARAM(cmos);
 IBM_PARAM(led);
@@ -1927,7 +2002,9 @@ static int __init acpi_ibm_init(void)
         IBM_HANDLE_INIT(hkey);
         IBM_HANDLE_INIT(lght);
         IBM_HANDLE_INIT(cmos);
+#ifdef CONFIG_ACPI_IBM_DOCK
         IBM_HANDLE_INIT(dock);
+#endif
         IBM_HANDLE_INIT(pci);
         IBM_HANDLE_INIT(bay);
         if (bay_handle)