1 files changed, 161 insertions, 0 deletions

diff --git a/kernel/drivers/platform/x86/intel-rst.c b/kernel/drivers/platform/x86/intel-rst.c
new file mode 100644
index 000000000..7344d841f
--- /dev/null
+++ b/kernel/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);