- LCD Shadow (PrivacyGuard) enable and disable
- Lap mode sensor
- Setting keyboard language
+ - WWAN Antenna type
A compatibility table by model and feature is maintained on the web
site, http://ibm-acpi.sf.net/. I appreciate any success or failure
nl(Dutch), nn(Norway), pl(Polish), pt(portugese), sl(Slovenian), sv(Sweden),
tr(Turkey)
+WWAN Antenna type
+-----------------
+
+sysfs: wwan_antenna_type
+
+On some newer Thinkpads we need to set SAR value based on the antenna
+type. This interface will be used by userspace to get the antenna type
+and set the corresponding SAR value, as is required for FCC certification.
+
+The available commands are::
+
+ cat /sys/devices/platform/thinkpad_acpi/wwan_antenna_type
+
+Currently 2 antenna types are supported as mentioned below:
+- type a
+- type b
+
+The property is read-only. If the platform doesn't have support the sysfs
+class is not created.
Adaptive keyboard
-----------------
.exit = kbdlang_exit,
};
+/*************************************************************************
+ * DPRC(Dynamic Power Reduction Control) subdriver, for the Lenovo WWAN
+ * and WLAN feature.
+ */
+#define DPRC_GET_WWAN_ANTENNA_TYPE 0x40000
+#define DPRC_WWAN_ANTENNA_TYPE_A_BIT BIT(4)
+#define DPRC_WWAN_ANTENNA_TYPE_B_BIT BIT(8)
+static bool has_antennatype;
+static int wwan_antennatype;
+
+static int dprc_command(int command, int *output)
+{
+ acpi_handle dprc_handle;
+
+ if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DPRC", &dprc_handle))) {
+ /* Platform doesn't support DPRC */
+ return -ENODEV;
+ }
+
+ if (!acpi_evalf(dprc_handle, output, NULL, "dd", command))
+ return -EIO;
+
+ /*
+ * METHOD_ERR gets returned on devices where few commands are not supported
+ * for example command to get WWAN Antenna type command is not supported on
+ * some devices.
+ */
+ if (*output & METHOD_ERR)
+ return -ENODEV;
+
+ return 0;
+}
+
+static int get_wwan_antenna(int *wwan_antennatype)
+{
+ int output, err;
+
+ /* Get current Antenna type */
+ err = dprc_command(DPRC_GET_WWAN_ANTENNA_TYPE, &output);
+ if (err)
+ return err;
+
+ if (output & DPRC_WWAN_ANTENNA_TYPE_A_BIT)
+ *wwan_antennatype = 1;
+ else if (output & DPRC_WWAN_ANTENNA_TYPE_B_BIT)
+ *wwan_antennatype = 2;
+ else
+ return -ENODEV;
+
+ return 0;
+}
+
+/* sysfs wwan antenna type entry */
+static ssize_t wwan_antenna_type_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ switch (wwan_antennatype) {
+ case 1:
+ return sysfs_emit(buf, "type a\n");
+ case 2:
+ return sysfs_emit(buf, "type b\n");
+ default:
+ return -ENODATA;
+ }
+}
+static DEVICE_ATTR_RO(wwan_antenna_type);
+
+static int tpacpi_dprc_init(struct ibm_init_struct *iibm)
+{
+ int wwanantenna_err, err;
+
+ wwanantenna_err = get_wwan_antenna(&wwan_antennatype);
+ /*
+ * If support isn't available (ENODEV) then quit, but don't
+ * return an error.
+ */
+ if (wwanantenna_err == -ENODEV)
+ return 0;
+
+ /* if there was an error return it */
+ if (wwanantenna_err && (wwanantenna_err != -ENODEV))
+ return wwanantenna_err;
+ else if (!wwanantenna_err)
+ has_antennatype = true;
+
+ if (has_antennatype) {
+ err = sysfs_create_file(&tpacpi_pdev->dev.kobj, &dev_attr_wwan_antenna_type.attr);
+ if (err)
+ return err;
+ }
+ return 0;
+}
+
+static void dprc_exit(void)
+{
+ if (has_antennatype)
+ sysfs_remove_file(&tpacpi_pdev->dev.kobj, &dev_attr_wwan_antenna_type.attr);
+}
+
+static struct ibm_struct dprc_driver_data = {
+ .name = "dprc",
+ .exit = dprc_exit,
+};
+
/****************************************************************************
****************************************************************************
*
.init = tpacpi_kbdlang_init,
.data = &kbdlang_driver_data,
},
+ {
+ .init = tpacpi_dprc_init,
+ .data = &dprc_driver_data,
+ },
};
static int __init set_ibm_param(const char *val, const struct kernel_param *kp)