ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/platform/x86/mxm-wmi.c b/marvell/linux/drivers/platform/x86/mxm-wmi.c
new file mode 100644
index 0000000..9a45795
--- /dev/null
+++ b/marvell/linux/drivers/platform/x86/mxm-wmi.c
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * MXM WMI driver
+ *
+ * Copyright(C) 2010 Red Hat.
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/mxm-wmi.h>
+#include <linux/acpi.h>
+
+MODULE_AUTHOR("Dave Airlie");
+MODULE_DESCRIPTION("MXM WMI Driver");
+MODULE_LICENSE("GPL");
+
+#define MXM_WMMX_GUID "F6CB5C3C-9CAE-4EBD-B577-931EA32A2CC0"
+
+MODULE_ALIAS("wmi:"MXM_WMMX_GUID);
+
+#define MXM_WMMX_FUNC_MXDS 0x5344584D /* "MXDS" */
+#define MXM_WMMX_FUNC_MXMX 0x53445344 /* "MXMX" */
+
+struct mxds_args {
+ u32 func;
+ u32 args;
+ u32 xarg;
+};
+
+int mxm_wmi_call_mxds(int adapter)
+{
+ struct mxds_args args = {
+ .func = MXM_WMMX_FUNC_MXDS,
+ .args = 0,
+ .xarg = 1,
+ };
+ struct acpi_buffer input = { (acpi_size)sizeof(args), &args };
+ acpi_status status;
+
+ printk("calling mux switch %d\n", adapter);
+
+ status = wmi_evaluate_method(MXM_WMMX_GUID, 0x0, adapter, &input, NULL);
+
+ if (ACPI_FAILURE(status))
+ return status;
+
+ printk("mux switched %d\n", status);
+ return 0;
+
+}
+EXPORT_SYMBOL_GPL(mxm_wmi_call_mxds);
+
+int mxm_wmi_call_mxmx(int adapter)
+{
+ struct mxds_args args = {
+ .func = MXM_WMMX_FUNC_MXMX,
+ .args = 0,
+ .xarg = 1,
+ };
+ struct acpi_buffer input = { (acpi_size)sizeof(args), &args };
+ acpi_status status;
+
+ printk("calling mux switch %d\n", adapter);
+
+ status = wmi_evaluate_method(MXM_WMMX_GUID, 0x0, adapter, &input, NULL);
+
+ if (ACPI_FAILURE(status))
+ return status;
+
+ printk("mux mutex set switched %d\n", status);
+ return 0;
+
+}
+EXPORT_SYMBOL_GPL(mxm_wmi_call_mxmx);
+
+bool mxm_wmi_supported(void)
+{
+ bool guid_valid;
+ guid_valid = wmi_has_guid(MXM_WMMX_GUID);
+ return guid_valid;
+}
+EXPORT_SYMBOL_GPL(mxm_wmi_supported);
+
+static int __init mxm_wmi_init(void)
+{
+ return 0;
+}
+
+static void __exit mxm_wmi_exit(void)
+{
+}
+
+module_init(mxm_wmi_init);
+module_exit(mxm_wmi_exit);