threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
139 lines
3.5 KiB
C
139 lines
3.5 KiB
C
/*
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* Copyright (C) 2016 MediaTek Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See http://www.gnu.org/licenses/gpl-2.0.html for more details.
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*/
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#include <linux/module.h> /* needed by all modules */
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#include <linux/init.h> /* needed by module macros */
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#include <linux/fs.h> /* needed by file_operations* */
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#include <linux/miscdevice.h> /* needed by miscdevice* */
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#include <linux/sysfs.h>
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#include <linux/device.h> /* needed by device_* */
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#include <linux/vmalloc.h> /* needed by kmalloc */
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#include <linux/uaccess.h> /* needed by copy_to_user */
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#include <linux/slab.h> /* needed by kmalloc */
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#include <linux/poll.h> /* needed by poll */
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#include <linux/mutex.h>
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#include <linux/sched.h>
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#include <linux/interrupt.h>
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#include <linux/suspend.h>
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#include <linux/timer.h>
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#include <linux/notifier.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <linux/of_irq.h>
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#include <linux/of_fdt.h>
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#include <linux/ioport.h>
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#include <linux/io.h>
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/*
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* =============================================================================
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* MACRO
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* =============================================================================
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*/
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#define AUDIO_IPI_DEVICE_NAME "audio_ipi"
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/*
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* =============================================================================
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* private global members
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* =============================================================================
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*/
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/*
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* =============================================================================
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* functions declaration
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* =============================================================================
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*/
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/*
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* =============================================================================
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* implementation
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* =============================================================================
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*/
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static long audio_ipi_driver_ioctl(
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struct file *file, unsigned int cmd, unsigned long arg)
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{
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pr_debug("%s not support!!\n", __func__);
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return 0;
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}
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#ifdef CONFIG_COMPAT
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static long audio_ipi_driver_compat_ioctl(
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struct file *file, unsigned int cmd, unsigned long arg)
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{
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if (!file->f_op || !file->f_op->unlocked_ioctl) {
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pr_debug("op null\n");
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return -ENOTTY;
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}
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return file->f_op->unlocked_ioctl(file, cmd, arg);
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}
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#endif
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static ssize_t audio_ipi_driver_read(
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struct file *file, char __user *buf, size_t count, loff_t *ppos)
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{
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pr_debug("%s not support!!\n", __func__);
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return 0;
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}
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static const struct file_operations audio_ipi_driver_ops = {
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.owner = THIS_MODULE,
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.read = audio_ipi_driver_read,
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.unlocked_ioctl = audio_ipi_driver_ioctl,
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#ifdef CONFIG_COMPAT
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.compat_ioctl = audio_ipi_driver_compat_ioctl,
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#endif
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};
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static struct miscdevice audio_ipi_device = {
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.minor = MISC_DYNAMIC_MINOR,
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.name = AUDIO_IPI_DEVICE_NAME,
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.fops = &audio_ipi_driver_ops
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};
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static int __init audio_ipi_driver_init(void)
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{
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int ret = 0;
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ret = misc_register(&audio_ipi_device);
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if (unlikely(ret != 0)) {
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pr_debug("[SCP] misc register failed\n");
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return ret;
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}
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return ret;
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}
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static void __exit audio_ipi_driver_exit(void)
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{
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}
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module_init(audio_ipi_driver_init);
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module_exit(audio_ipi_driver_exit);
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