Support enable/disable of WAN module in ibm_acpi

New Lenovo Thinkpads have an optional WAN module (a Sierra Wireless MC5720 EV-DO modem), which can be turned on and off much like the Bluetooth module. This patch adds a "wan" entry to /proc/acpi/ibm, which is pretty much a cut'n'paste of the corresponding bluetooth code.

J

--

Allow a WAN module to enabled/disabled 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.

diff -r 401a0868b8be 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;

@@ -1561,6 +1624,13 @@ static struct ibm_struct ibms[] = {
.init = bluetooth_init,
.read = bluetooth_read,
.write = bluetooth_write,
+ },
+ {
+ .name = "wan",
+ .init = wan_init,
+ .read = wan_read,
+ .write = wan_write,
+ .experimental = 1,

	 },
	{
	 .name = "video",

I'm not able to test this myself, but it looks good. Len, please apply.

Thanks,
Borislav

--

Allow a WAN module to enabled/disabled 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.

diff -r 401a0868b8be 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;

@@ -1561,6 +1624,13 @@ static struct ibm_struct ibms[] = {
.init = bluetooth_init,
.read = bluetooth_read,
.write = bluetooth_write,
+ },
+ {
+ .name = "wan",
+ .init = wan_init,
+ .read = wan_read,
+ .write = wan_write,
+ .experimental = 1,

	 },
	{
	 .name = "video",