94 lines
2 KiB
C
94 lines
2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Copyright (C) 2021 MediaTek Inc.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/uaccess.h>
|
|
#include <linux/debugfs.h>
|
|
#include <upmu_common.h>
|
|
|
|
static int rtc_alarm_enabled = 1;
|
|
|
|
static ssize_t mtk_rtc_debug_write(struct file *file,
|
|
const char __user *buf, size_t size, loff_t *ppos)
|
|
{
|
|
char lbuf[128];
|
|
char option[16];
|
|
int setting;
|
|
ssize_t res;
|
|
|
|
if (*ppos != 0 || size >= sizeof(lbuf) || size == 0)
|
|
return -EINVAL;
|
|
|
|
res = simple_write_to_buffer(lbuf, sizeof(lbuf) - 1, ppos, buf, size);
|
|
if (res <= 0)
|
|
return -EFAULT;
|
|
lbuf[size] = '\0';
|
|
|
|
if (sscanf(lbuf, "%15s %d", option, &setting) != 2) {
|
|
pr_notice("Invalid para %s\n", lbuf);
|
|
return -EFAULT;
|
|
}
|
|
|
|
if (!strncmp(option, "alarm", strlen("alarm"))) {
|
|
pr_notice("alarm = %d\n", setting);
|
|
rtc_alarm_enabled = setting;
|
|
if (rtc_alarm_enabled)
|
|
pmic_enable_interrupt(INT_RTC, 1, "RTC");
|
|
else
|
|
pmic_enable_interrupt(INT_RTC, 0, "RTC");
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
static int mtk_rtc_debug_show(struct seq_file *s, void *unused)
|
|
{
|
|
seq_printf(s, "rtc alarm %s\n",
|
|
rtc_alarm_enabled ? "enabled" : "disabled");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mtk_rtc_debug_open(struct inode *inode,
|
|
struct file *file)
|
|
{
|
|
return single_open(file, mtk_rtc_debug_show, NULL);
|
|
}
|
|
|
|
static const struct file_operations mtk_rtc_debug_ops = {
|
|
.open = mtk_rtc_debug_open,
|
|
.read = seq_read,
|
|
.write = mtk_rtc_debug_write,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
int __init rtc_debug_init(void)
|
|
{
|
|
struct dentry *mtk_rtc_dir = NULL;
|
|
struct dentry *mtk_rtc_file = NULL;
|
|
|
|
mtk_rtc_dir = debugfs_create_dir("mtk_rtc", NULL);
|
|
if (!mtk_rtc_dir) {
|
|
pr_info("create /sys/kernel/debug/mtk_rtc_dir failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
mtk_rtc_file = debugfs_create_file("mtk_rtc", 0644,
|
|
mtk_rtc_dir, NULL,
|
|
&mtk_rtc_debug_ops);
|
|
if (!mtk_rtc_file) {
|
|
pr_info("create /sys/kernel/debug/mtk_rtc/mtk_rtc failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
device_initcall(rtc_debug_init);
|