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1a59d1b8e0
Based on 1 normalized pattern(s): 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 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
99 lines
1.9 KiB
C
99 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* MXM WMI driver
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*
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* Copyright(C) 2010 Red Hat.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/mxm-wmi.h>
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#include <linux/acpi.h>
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MODULE_AUTHOR("Dave Airlie");
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MODULE_DESCRIPTION("MXM WMI Driver");
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MODULE_LICENSE("GPL");
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#define MXM_WMMX_GUID "F6CB5C3C-9CAE-4EBD-B577-931EA32A2CC0"
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MODULE_ALIAS("wmi:"MXM_WMMX_GUID);
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#define MXM_WMMX_FUNC_MXDS 0x5344584D /* "MXDS" */
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#define MXM_WMMX_FUNC_MXMX 0x53445344 /* "MXMX" */
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struct mxds_args {
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u32 func;
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u32 args;
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u32 xarg;
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};
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int mxm_wmi_call_mxds(int adapter)
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{
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struct mxds_args args = {
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.func = MXM_WMMX_FUNC_MXDS,
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.args = 0,
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.xarg = 1,
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};
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struct acpi_buffer input = { (acpi_size)sizeof(args), &args };
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struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
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acpi_status status;
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printk("calling mux switch %d\n", adapter);
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status = wmi_evaluate_method(MXM_WMMX_GUID, 0x0, adapter, &input,
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&output);
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if (ACPI_FAILURE(status))
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return status;
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printk("mux switched %d\n", status);
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return 0;
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}
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EXPORT_SYMBOL_GPL(mxm_wmi_call_mxds);
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int mxm_wmi_call_mxmx(int adapter)
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{
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struct mxds_args args = {
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.func = MXM_WMMX_FUNC_MXMX,
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.args = 0,
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.xarg = 1,
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};
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struct acpi_buffer input = { (acpi_size)sizeof(args), &args };
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struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
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acpi_status status;
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printk("calling mux switch %d\n", adapter);
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status = wmi_evaluate_method(MXM_WMMX_GUID, 0x0, adapter, &input,
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&output);
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if (ACPI_FAILURE(status))
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return status;
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printk("mux mutex set switched %d\n", status);
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return 0;
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}
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EXPORT_SYMBOL_GPL(mxm_wmi_call_mxmx);
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bool mxm_wmi_supported(void)
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{
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bool guid_valid;
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guid_valid = wmi_has_guid(MXM_WMMX_GUID);
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return guid_valid;
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}
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EXPORT_SYMBOL_GPL(mxm_wmi_supported);
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static int __init mxm_wmi_init(void)
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{
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return 0;
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}
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static void __exit mxm_wmi_exit(void)
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{
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}
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module_init(mxm_wmi_init);
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module_exit(mxm_wmi_exit);
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