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-rw-r--r--Documentation/ABI/testing/sysfs-driver-intel-rapid-start21
-rw-r--r--drivers/platform/x86/Kconfig12
-rw-r--r--drivers/platform/x86/Makefile1
-rw-r--r--drivers/platform/x86/intel-rst.c209
4 files changed, 243 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-driver-intel-rapid-start b/Documentation/ABI/testing/sysfs-driver-intel-rapid-start
new file mode 100644
index 0000000..5a7d2e2
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-intel-rapid-start
@@ -0,0 +1,21 @@
+What: /sys/bus/acpi/intel-rapid-start/wakeup_events
+Date: July 2, 2013
+KernelVersion: 3.11
+Contact: Matthew Garrett <mjg59@srcf.ucam.org>
+Description: An integer representing a set of wakeup events as follows:
+ 1: Wake to enter hibernation when the wakeup timer expires
+ 2: Wake to enter hibernation when the battery reaches a
+ critical level
+
+ These values are ORed together. For example, a value of 3
+ indicates that the system will wake to enter hibernation when
+ either the wakeup timer expires or the battery reaches a
+ critical level.
+
+What: /sys/bus/acpi/intel-rapid-start/wakeup_time
+Date: July 2, 2013
+KernelVersion: 3.11
+Contact: Matthew Garrett <mjg59@srcf.ucam.org>
+Description: An integer representing the length of time the system will
+ remain asleep before waking up to enter hibernation.
+ This value is in minutes.
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 37645b9..36057f4 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -782,6 +782,18 @@ config APPLE_GMUX
graphics as well as the backlight. Currently only backlight
control is supported by the driver.
+config INTEL_RST
+ tristate "Intel Rapid Start Technology Driver"
+ depends on ACPI
+ ---help---
+ This driver provides support for modifying paramaters on systems
+ equipped with Intel's Rapid Start Technology. When put in an ACPI
+ sleep state, these devices will wake after either a configured
+ timeout or when the system battery reaches a critical state,
+ automatically copying memory contents to disk. On resume, the
+ firmware will copy the memory contents back to RAM and resume the OS
+ as usual.
+
config PVPANIC
tristate "pvpanic device support"
depends on ACPI
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index ef0ec74..5c669ce 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -51,5 +51,6 @@ obj-$(CONFIG_INTEL_OAKTRAIL) += intel_oaktrail.o
obj-$(CONFIG_SAMSUNG_Q10) += samsung-q10.o
obj-$(CONFIG_APPLE_GMUX) += apple-gmux.o
obj-$(CONFIG_CHROMEOS_LAPTOP) += chromeos_laptop.o
+obj-$(CONFIG_INTEL_RST) += intel-rst.o
obj-$(CONFIG_PVPANIC) += pvpanic.o
diff --git a/drivers/platform/x86/intel-rst.c b/drivers/platform/x86/intel-rst.c
new file mode 100644
index 0000000..9385afd
--- /dev/null
+++ b/drivers/platform/x86/intel-rst.c
@@ -0,0 +1,209 @@
+/*
+ * 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 <acpi/acpi_drivers.h>
+
+MODULE_LICENSE("GPL");
+
+static ssize_t irst_show_wakeup_events(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct acpi_device *acpi;
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *result;
+ acpi_status status;
+
+ acpi = to_acpi_device(dev);
+
+ status = acpi_evaluate_object(acpi->handle, "GFFS", NULL, &output);
+ if (!ACPI_SUCCESS(status))
+ return -EINVAL;
+
+ result = output.pointer;
+
+ if (result->type != ACPI_TYPE_INTEGER) {
+ kfree(result);
+ return -EINVAL;
+ }
+
+ return sprintf(buf, "%lld\n", result->integer.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;
+ struct acpi_object_list input;
+ union acpi_object param;
+ acpi_status status;
+ unsigned long value;
+ int error;
+
+ acpi = to_acpi_device(dev);
+
+ error = kstrtoul(buf, 0, &value);
+
+ if (error)
+ return error;
+
+ param.type = ACPI_TYPE_INTEGER;
+ param.integer.value = value;
+
+ input.count = 1;
+ input.pointer = &param;
+
+ status = acpi_evaluate_object(acpi->handle, "SFFS", &input, NULL);
+
+ if (!ACPI_SUCCESS(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;
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *result;
+ acpi_status status;
+
+ acpi = to_acpi_device(dev);
+
+ status = acpi_evaluate_object(acpi->handle, "GFTV", NULL, &output);
+ if (!ACPI_SUCCESS(status))
+ return -EINVAL;
+
+ result = output.pointer;
+
+ if (result->type != ACPI_TYPE_INTEGER) {
+ kfree(result);
+ return -EINVAL;
+ }
+
+ return sprintf(buf, "%lld\n", result->integer.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;
+ struct acpi_object_list input;
+ union acpi_object param;
+ acpi_status status;
+ unsigned long value;
+ int error;
+
+ acpi = to_acpi_device(dev);
+
+ error = kstrtoul(buf, 0, &value);
+
+ if (error)
+ return error;
+
+ param.type = ACPI_TYPE_INTEGER;
+ param.integer.value = value;
+
+ input.count = 1;
+ input.pointer = &param;
+
+ status = acpi_evaluate_object(acpi->handle, "SFTV", &input, NULL);
+
+ if (!ACPI_SUCCESS(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 = 0;
+
+ error = device_create_file(&acpi->dev, &irst_timeout_attr);
+ if (error)
+ goto out;
+
+ error = device_create_file(&acpi->dev, &irst_wakeup_attr);
+ if (error)
+ goto out_timeout;
+
+ return 0;
+
+out_timeout:
+ device_remove_file(&acpi->dev, &irst_timeout_attr);
+out:
+ 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,
+ },
+};
+
+static int irst_init(void)
+{
+ return acpi_bus_register_driver(&irst_driver);
+}
+
+static void irst_exit(void)
+{
+ acpi_bus_unregister_driver(&irst_driver);
+}
+
+module_init(irst_init);
+module_exit(irst_exit);
+
+MODULE_DEVICE_TABLE(acpi, irst_ids);
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