Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / platform / x86 / intel-smartconnect.c

diff --git a/kernel/drivers/platform/x86/intel-smartconnect.c b/kernel/drivers/platform/x86/intel-smartconnect.c
new file mode 100644 (file)
index 0000000..04cf5df
--- /dev/null
+++ b/kernel/drivers/platform/x86/intel-smartconnect.c
@@ -0,0 +1,60 @@
+/*
+ *  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/acpi.h>
+
+MODULE_LICENSE("GPL");
+
+static int smartconnect_acpi_init(struct acpi_device *acpi)
+{
+       unsigned long long value;
+       acpi_status status;
+
+       status = acpi_evaluate_integer(acpi->handle, "GAOS", NULL, &value);
+       if (!ACPI_SUCCESS(status))
+               return -EINVAL;
+
+       if (value & 0x1) {
+               dev_info(&acpi->dev, "Disabling Intel Smart Connect\n");
+               status = acpi_execute_simple_method(acpi->handle, "SAOS", 0);
+       }
+
+       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,
+       },
+};
+
+module_acpi_driver(smartconnect_driver);
+
+MODULE_DEVICE_TABLE(acpi, smartconnect_ids);