v4.19.13 snapshot.
diff --git a/drivers/platform/x86/intel-rst.c b/drivers/platform/x86/intel-rst.c
new file mode 100644
index 0000000..7344d84
--- /dev/null
+++ b/drivers/platform/x86/intel-rst.c
@@ -0,0 +1,161 @@
+/*
+ * Copyright 2013 Matthew Garrett <mjg59@srcf.ucam.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/acpi.h>
+
+MODULE_LICENSE("GPL");
+
+static ssize_t irst_show_wakeup_events(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct acpi_device *acpi;
+ unsigned long long value;
+ acpi_status status;
+
+ acpi = to_acpi_device(dev);
+
+ status = acpi_evaluate_integer(acpi->handle, "GFFS", NULL, &value);
+ if (ACPI_FAILURE(status))
+ return -EINVAL;
+
+ return sprintf(buf, "%lld\n", value);
+}
+
+static ssize_t irst_store_wakeup_events(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct acpi_device *acpi;
+ acpi_status status;
+ unsigned long value;
+ int error;
+
+ acpi = to_acpi_device(dev);
+
+ error = kstrtoul(buf, 0, &value);
+
+ if (error)
+ return error;
+
+ status = acpi_execute_simple_method(acpi->handle, "SFFS", value);
+
+ if (ACPI_FAILURE(status))
+ return -EINVAL;
+
+ return count;
+}
+
+static struct device_attribute irst_wakeup_attr = {
+ .attr = { .name = "wakeup_events", .mode = 0600 },
+ .show = irst_show_wakeup_events,
+ .store = irst_store_wakeup_events
+};
+
+static ssize_t irst_show_wakeup_time(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct acpi_device *acpi;
+ unsigned long long value;
+ acpi_status status;
+
+ acpi = to_acpi_device(dev);
+
+ status = acpi_evaluate_integer(acpi->handle, "GFTV", NULL, &value);
+ if (ACPI_FAILURE(status))
+ return -EINVAL;
+
+ return sprintf(buf, "%lld\n", value);
+}
+
+static ssize_t irst_store_wakeup_time(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct acpi_device *acpi;
+ acpi_status status;
+ unsigned long value;
+ int error;
+
+ acpi = to_acpi_device(dev);
+
+ error = kstrtoul(buf, 0, &value);
+
+ if (error)
+ return error;
+
+ status = acpi_execute_simple_method(acpi->handle, "SFTV", value);
+
+ if (ACPI_FAILURE(status))
+ return -EINVAL;
+
+ return count;
+}
+
+static struct device_attribute irst_timeout_attr = {
+ .attr = { .name = "wakeup_time", .mode = 0600 },
+ .show = irst_show_wakeup_time,
+ .store = irst_store_wakeup_time
+};
+
+static int irst_add(struct acpi_device *acpi)
+{
+ int error;
+
+ error = device_create_file(&acpi->dev, &irst_timeout_attr);
+ if (unlikely(error))
+ return error;
+
+ error = device_create_file(&acpi->dev, &irst_wakeup_attr);
+ if (unlikely(error))
+ device_remove_file(&acpi->dev, &irst_timeout_attr);
+
+ return error;
+}
+
+static int irst_remove(struct acpi_device *acpi)
+{
+ device_remove_file(&acpi->dev, &irst_wakeup_attr);
+ device_remove_file(&acpi->dev, &irst_timeout_attr);
+
+ return 0;
+}
+
+static const struct acpi_device_id irst_ids[] = {
+ {"INT3392", 0},
+ {"", 0}
+};
+
+static struct acpi_driver irst_driver = {
+ .owner = THIS_MODULE,
+ .name = "intel_rapid_start",
+ .class = "intel_rapid_start",
+ .ids = irst_ids,
+ .ops = {
+ .add = irst_add,
+ .remove = irst_remove,
+ },
+};
+
+module_acpi_driver(irst_driver);
+
+MODULE_DEVICE_TABLE(acpi, irst_ids);