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authorJeremy Fitzhardinge <jeremy@goop.org>2006-06-01 17:41:00 -0400
committerLen Brown <len.brown@intel.com>2006-06-01 20:42:32 -0400
commit42adb53cb36d19862a02d3087e2e3d9dab39e5fa (patch)
treecbf070073a1bedaf8ab2247864ba03269e3e7f26 /drivers/acpi
parentba8f5baba79da8eb502f8534c3a8ecb64aceb790 (diff)
ACPI: Allow a WAN module enable/disable on a Thinkpad X60.
The WAN (Sierra Wireless EV-DO) module is very similar to the Bluetooth module. It appears on the USB bus when enabled. It can be controlled via hot key, or directly via ACPI. This change enables direct control via ACPI. I have tested it on my Lenovo Thinkpad X60; I guess it will probably work on other Thinkpad models which come with this module installed. Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org> Ack'd by: Borislav Deianov <borislav@users.sf.net> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/ibm_acpi.c70
1 files changed, 70 insertions, 0 deletions
diff --git a/drivers/acpi/ibm_acpi.c b/drivers/acpi/ibm_acpi.c
index 262b1f41335..15fc12482ba 100644
--- a/drivers/acpi/ibm_acpi.c
+++ b/drivers/acpi/ibm_acpi.c
@@ -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;
@@ -1563,6 +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,