1 files changed, 90 insertions, 0 deletions

diff --git a/drivers/platform/x86/intel-smartconnect.c b/drivers/platform/x86/intel-smartconnect.c
new file mode 100644
index 000000000000..f74e93d096bc
--- /dev/null
+++ b/drivers/platform/x86/intel-smartconnect.c
@@ -0,0 +1,90 @@
+/*
+ *  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 <acpi/acpi_drivers.h>
+
+MODULE_LICENSE("GPL");
+
+static int smartconnect_acpi_init(struct acpi_device *acpi)
+{
+        struct acpi_object_list input;
+        struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+        union acpi_object *result;
+        union acpi_object param;
+        acpi_status status;
+
+        status = acpi_evaluate_object(acpi->handle, "GAOS", NULL, &output);
+        if (!ACPI_SUCCESS(status))
+                return -EINVAL;
+
+        result = output.pointer;
+
+        if (result->type != ACPI_TYPE_INTEGER) {
+                kfree(result);
+                return -EINVAL;
+        }
+
+        if (result->integer.value & 0x1) {
+                param.type = ACPI_TYPE_INTEGER;
+                param.integer.value = 0;
+
+                input.count = 1;
+                input.pointer = &param;
+
+                dev_info(&acpi->dev, "Disabling Intel Smart Connect\n");
+                status = acpi_evaluate_object(acpi->handle, "SAOS", &input,
+                                              NULL);
+        }
+
+        kfree(result);
+
+        return 0;
+}
+
+static const struct acpi_device_id smartconnect_ids[] = {
+        {"INT33A0", 0},
+        {"", 0}
+};
+
+static struct acpi_driver smartconnect_driver = {
+        .owner = THIS_MODULE,
+        .name = "intel_smart_connect",
+        .class = "intel_smart_connect",
+        .ids = smartconnect_ids,
+        .ops = {
+                .add = smartconnect_acpi_init,
+        },
+};
+
+static int smartconnect_init(void)
+{
+        return acpi_bus_register_driver(&smartconnect_driver);
+}
+
+static void smartconnect_exit(void)
+{
+        acpi_bus_unregister_driver(&smartconnect_driver);
+}
+
+module_init(smartconnect_init);
+module_exit(smartconnect_exit);
+
+MODULE_DEVICE_TABLE(acpi, smartconnect_ids);