diff --git a/Documentation/admin-guide/laptops/thinkpad-acpi.rst b/Documentation/admin-guide/laptops/thinkpad-acpi.rst
index 5fe1ade88c17..10410811b990 100644
--- a/Documentation/admin-guide/laptops/thinkpad-acpi.rst
+++ b/Documentation/admin-guide/laptops/thinkpad-acpi.rst
@@ -51,6 +51,7 @@ detailed description):
 	- UWB enable and disable
 	- LCD Shadow (PrivacyGuard) enable and disable
 	- Lap mode sensor
+	- WLAN transmission power control
 
 A compatibility table by model and feature is maintained on the web
 site, http://ibm-acpi.sf.net/. I appreciate any success or failure
@@ -1447,6 +1448,23 @@ they differ between desk and lap mode.
 The property is read-only. If the platform doesn't have support the sysfs
 class is not created.
 
+WLAN transmission power control
+--------------------------------
+
+sysfs: wlan_tx_strength_reduce
+
+Some newer Thinkpads have the WLAN antenna placed close to the WWAN antenna.
+This interface will be used by userspace to reduce the WLAN Tx power strength
+when WWAN is active, as is required for FCC certification.
+
+The available commands are::
+
+        echo '0' > /sys/devices/platform/thinkpad_acpi/wlan_tx_strength_reduce
+        echo '1' > /sys/devices/platform/thinkpad_acpi/wlan_tx_strength_reduce
+
+The first command restores the wlan transmission power and the latter one
+reduces wlan transmission power.
+
 EXPERIMENTAL: UWB
 -----------------
 
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index f3e8eca8d86d..6dbbd4a14264 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -9983,6 +9983,138 @@ static struct ibm_struct proxsensor_driver_data = {
 	.exit = proxsensor_exit,
 };
 
+/*************************************************************************
+ * DPRC(Dynamic Power Reduction Control) subdriver, for the Lenovo WWAN
+ * and WLAN feature.
+ */
+#define DPRC_GET_WLAN_STATE             0x20000
+#define DPRC_SET_WLAN_POWER_REDUCE      0x00030010
+#define DPRC_SET_WLAN_POWER_FULL        0x00030100
+static int has_wlantxreduce;
+static int wlan_txreduce;
+
+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 WLAN power reduce command is not supported on some devices.
+	 */
+	if (*output & METHOD_ERR)
+		return -ENODEV;
+
+	return 0;
+}
+
+static int get_wlan_state(int *has_wlantxreduce, int *wlan_txreduce)
+{
+	int output, err;
+
+	/* Get current WLAN Power Transmission state */
+	err = dprc_command(DPRC_GET_WLAN_STATE, &output);
+	if (err)
+		return err;
+
+	if (output & BIT(4))
+		*wlan_txreduce = 1;
+	else if (output & BIT(8))
+		*wlan_txreduce = 0;
+	else
+		*wlan_txreduce = -1;
+
+	*has_wlantxreduce = 1;
+	return 0;
+}
+
+/* sysfs wlan entry */
+static ssize_t wlan_tx_strength_reduce_show(struct device *dev,
+				struct device_attribute *attr,
+				char *buf)
+{
+	int err;
+
+	err = get_wlan_state(&has_wlantxreduce, &wlan_txreduce);
+	if (err)
+		return err;
+
+	return sysfs_emit(buf, "%d\n", wlan_txreduce);
+}
+
+static ssize_t wlan_tx_strength_reduce_store(struct device *dev,
+				struct device_attribute *attr,
+				const char *buf, size_t count)
+{
+	int output, err;
+	unsigned long t;
+
+	if (parse_strtoul(buf, 1, &t))
+		return -EINVAL;
+
+	tpacpi_disclose_usertask(attr->attr.name,
+				"WLAN tx strength reduced %lu\n", t);
+
+	switch (t) {
+	case 0:
+		err = dprc_command(DPRC_SET_WLAN_POWER_FULL, &output);
+		break;
+	case 1:
+		err = dprc_command(DPRC_SET_WLAN_POWER_REDUCE, &output);
+		break;
+	default:
+		err = -EINVAL;
+		dev_err(&tpacpi_pdev->dev, "Unknown operating mode. Ignoring\n");
+		break;
+	}
+
+	sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "wlan_tx_strength_reduce");
+	return count;
+}
+static DEVICE_ATTR_RW(wlan_tx_strength_reduce);
+
+static int tpacpi_dprc_init(struct ibm_init_struct *iibm)
+{
+	int wlantx_err, err;
+
+	wlantx_err = get_wlan_state(&has_wlantxreduce, &wlan_txreduce);
+	/*
+	 * If support isn't available (ENODEV) for both devices then quit, but
+	 * don't return an error.
+	 */
+	if (wlantx_err == -ENODEV)
+		return 0;
+	/* Otherwise, if there was an error return it */
+	if (wlantx_err && (wlantx_err != -ENODEV))
+		return wlantx_err;
+
+	if (has_wlantxreduce) {
+		err = sysfs_create_file(&tpacpi_pdev->dev.kobj,
+				&dev_attr_wlan_tx_strength_reduce.attr);
+		if (err)
+			return err;
+	}
+	return 0;
+}
+
+static void dprc_exit(void)
+{
+	if (has_wlantxreduce)
+		sysfs_remove_file(&tpacpi_pdev->dev.kobj, &dev_attr_wlan_tx_strength_reduce.attr);
+}
+
+static struct ibm_struct dprc_driver_data = {
+	.name = "dprc",
+	.exit = dprc_exit,
+};
+
 /****************************************************************************
  ****************************************************************************
  *
@@ -10475,6 +10607,10 @@ static struct ibm_init_struct ibms_init[] __initdata = {
 		.init = tpacpi_proxsensor_init,
 		.data = &proxsensor_driver_data,
 	},
+	{
+		.init = tpacpi_dprc_init,
+		.data = &dprc_driver_data,
+	},
 };
 
 static int __init set_ibm_param(const char *val, const struct kernel_param *kp)
