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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 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 675 mass ave cambridge ma 02139 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 77 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Armijn Hemel <armijn@tjaldur.nl> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.837555891@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
106 lines
2.4 KiB
C
106 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* driver for powerbutton on IBM cell blades
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*
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* (C) Copyright IBM Corp. 2005-2008
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*
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* Author: Christian Krafft <krafft@de.ibm.com>
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*/
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#include <linux/input.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <asm/pmi.h>
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#include <asm/prom.h>
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static struct input_dev *button_dev;
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static struct platform_device *button_pdev;
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static void cbe_powerbutton_handle_pmi(pmi_message_t pmi_msg)
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{
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BUG_ON(pmi_msg.type != PMI_TYPE_POWER_BUTTON);
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input_report_key(button_dev, KEY_POWER, 1);
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input_sync(button_dev);
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input_report_key(button_dev, KEY_POWER, 0);
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input_sync(button_dev);
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}
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static struct pmi_handler cbe_pmi_handler = {
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.type = PMI_TYPE_POWER_BUTTON,
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.handle_pmi_message = cbe_powerbutton_handle_pmi,
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};
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static int __init cbe_powerbutton_init(void)
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{
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int ret = 0;
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struct input_dev *dev;
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if (!of_machine_is_compatible("IBM,CBPLUS-1.0")) {
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printk(KERN_ERR "%s: Not a cell blade.\n", __func__);
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ret = -ENODEV;
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goto out;
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}
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dev = input_allocate_device();
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if (!dev) {
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ret = -ENOMEM;
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printk(KERN_ERR "%s: Not enough memory.\n", __func__);
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goto out;
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}
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set_bit(EV_KEY, dev->evbit);
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set_bit(KEY_POWER, dev->keybit);
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dev->name = "Power Button";
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dev->id.bustype = BUS_HOST;
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/* this makes the button look like an acpi power button
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* no clue whether anyone relies on that though */
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dev->id.product = 0x02;
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dev->phys = "LNXPWRBN/button/input0";
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button_pdev = platform_device_register_simple("power_button", 0, NULL, 0);
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if (IS_ERR(button_pdev)) {
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ret = PTR_ERR(button_pdev);
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goto out_free_input;
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}
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dev->dev.parent = &button_pdev->dev;
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ret = input_register_device(dev);
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if (ret) {
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printk(KERN_ERR "%s: Failed to register device\n", __func__);
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goto out_free_pdev;
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}
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button_dev = dev;
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ret = pmi_register_handler(&cbe_pmi_handler);
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if (ret) {
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printk(KERN_ERR "%s: Failed to register with pmi.\n", __func__);
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goto out_free_pdev;
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}
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goto out;
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out_free_pdev:
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platform_device_unregister(button_pdev);
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out_free_input:
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input_free_device(dev);
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out:
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return ret;
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}
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static void __exit cbe_powerbutton_exit(void)
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{
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pmi_unregister_handler(&cbe_pmi_handler);
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platform_device_unregister(button_pdev);
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input_free_device(button_dev);
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}
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module_init(cbe_powerbutton_init);
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module_exit(cbe_powerbutton_exit);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Christian Krafft <krafft@de.ibm.com>");
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