From 61598093bbdd283a7edc367d900f223070ead8d2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:43:03 +0000
Subject: [PATCH] add ax88772C AX88772C_eeprom_tools
---
kernel/drivers/rtc/rtc-sh.c | 40 +++++++++++++++++++++-------------------
1 files changed, 21 insertions(+), 19 deletions(-)
diff --git a/kernel/drivers/rtc/rtc-sh.c b/kernel/drivers/rtc/rtc-sh.c
index 3d7414e..9167b48 100644
--- a/kernel/drivers/rtc/rtc-sh.c
+++ b/kernel/drivers/rtc/rtc-sh.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* SuperH On-Chip RTC Support
*
@@ -9,10 +10,6 @@
*
* Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>
* Copyright (C) 1999 Tetsuya Okada & Niibe Yutaka
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
*/
#include <linux/module.h>
#include <linux/mod_devicetable.h>
@@ -279,6 +276,9 @@
struct sh_rtc *rtc = dev_get_drvdata(dev);
unsigned int sec128, sec2, yr, yr100, cf_bit;
+ if (!(readb(rtc->regbase + RCR2) & RCR2_RTCEN))
+ return -EINVAL;
+
do {
unsigned int tmp;
@@ -469,7 +469,6 @@
{
struct sh_rtc *rtc;
struct resource *res;
- struct rtc_time r;
char clk_name[6];
int clk_id, ret;
@@ -505,8 +504,7 @@
if (unlikely(!rtc->res))
return -EBUSY;
- rtc->regbase = devm_ioremap_nocache(&pdev->dev, rtc->res->start,
- rtc->regsize);
+ rtc->regbase = devm_ioremap(&pdev->dev, rtc->res->start, rtc->regsize);
if (unlikely(!rtc->regbase))
return -EINVAL;
@@ -530,6 +528,10 @@
*/
rtc->clk = NULL;
}
+
+ rtc->rtc_dev = devm_rtc_allocate_device(&pdev->dev);
+ if (IS_ERR(rtc->rtc_dev))
+ return PTR_ERR(rtc->rtc_dev);
clk_enable(rtc->clk);
@@ -594,20 +596,20 @@
sh_rtc_setaie(&pdev->dev, 0);
sh_rtc_setcie(&pdev->dev, 0);
- rtc->rtc_dev = devm_rtc_device_register(&pdev->dev, "sh",
- &sh_rtc_ops, THIS_MODULE);
- if (IS_ERR(rtc->rtc_dev)) {
- ret = PTR_ERR(rtc->rtc_dev);
- goto err_unmap;
- }
-
+ rtc->rtc_dev->ops = &sh_rtc_ops;
rtc->rtc_dev->max_user_freq = 256;
- /* reset rtc to epoch 0 if time is invalid */
- if (rtc_read_time(rtc->rtc_dev, &r) < 0) {
- rtc_time_to_tm(0, &r);
- rtc_set_time(rtc->rtc_dev, &r);
+ if (rtc->capabilities & RTC_CAP_4_DIGIT_YEAR) {
+ rtc->rtc_dev->range_min = RTC_TIMESTAMP_BEGIN_1900;
+ rtc->rtc_dev->range_max = RTC_TIMESTAMP_END_9999;
+ } else {
+ rtc->rtc_dev->range_min = mktime64(1999, 1, 1, 0, 0, 0);
+ rtc->rtc_dev->range_max = mktime64(2098, 12, 31, 23, 59, 59);
}
+
+ ret = rtc_register_device(rtc->rtc_dev);
+ if (ret)
+ goto err_unmap;
device_init_wakeup(&pdev->dev, 1);
return 0;
@@ -681,5 +683,5 @@
MODULE_AUTHOR("Paul Mundt <lethal@linux-sh.org>, "
"Jamie Lenehan <lenehan@twibble.org>, "
"Angelo Castello <angelo.castello@st.com>");
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:" DRV_NAME);
--
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