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-rv8803.c | 49 ++++++++++++++++++++-----------------------------
1 files changed, 20 insertions(+), 29 deletions(-)
diff --git a/kernel/drivers/rtc/rtc-rv8803.c b/kernel/drivers/rtc/rtc-rv8803.c
index 17ccef5..c6d8e34 100644
--- a/kernel/drivers/rtc/rtc-rv8803.c
+++ b/kernel/drivers/rtc/rtc-rv8803.c
@@ -1,13 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* RTC driver for the Micro Crystal RV8803
*
* Copyright (C) 2015 Micro Crystal SA
- *
- * Alexandre Belloni <alexandre.belloni@free-electrons.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
+ * Alexandre Belloni <alexandre.belloni@bootlin.com>
*
*/
@@ -236,9 +232,6 @@
u8 date[7];
int ctrl, flags, ret;
- if ((tm->tm_year < 100) || (tm->tm_year > 199))
- return -EINVAL;
-
ctrl = rv8803_read_reg(rv8803->client, RV8803_CTRL);
if (ctrl < 0)
return ctrl;
@@ -418,6 +411,7 @@
{
struct i2c_client *client = to_i2c_client(dev);
struct rv8803_data *rv8803 = dev_get_drvdata(dev);
+ unsigned int vl = 0;
int flags, ret = 0;
switch (cmd) {
@@ -426,18 +420,15 @@
if (flags < 0)
return flags;
- if (flags & RV8803_FLAG_V1F)
+ if (flags & RV8803_FLAG_V1F) {
dev_warn(&client->dev, "Voltage low, temperature compensation stopped.\n");
+ vl = RTC_VL_ACCURACY_LOW;
+ }
if (flags & RV8803_FLAG_V2F)
- dev_warn(&client->dev, "Voltage low, data loss detected.\n");
+ vl |= RTC_VL_DATA_INVALID;
- flags &= RV8803_FLAG_V1F | RV8803_FLAG_V2F;
-
- if (copy_to_user((void __user *)arg, &flags, sizeof(int)))
- return -EFAULT;
-
- return 0;
+ return put_user(vl, (unsigned int __user *)arg);
case RTC_VL_CLR:
mutex_lock(&rv8803->flags_lock);
@@ -447,7 +438,7 @@
return flags;
}
- flags &= ~(RV8803_FLAG_V1F | RV8803_FLAG_V2F);
+ flags &= ~RV8803_FLAG_V1F;
ret = rv8803_write_reg(client, RV8803_FLAG, flags);
mutex_unlock(&rv8803->flags_lock);
if (ret)
@@ -463,13 +454,7 @@
static int rv8803_nvram_write(void *priv, unsigned int offset, void *val,
size_t bytes)
{
- int ret;
-
- ret = rv8803_write_reg(priv, RV8803_RAM, *(u8 *)val);
- if (ret)
- return ret;
-
- return 0;
+ return rv8803_write_reg(priv, RV8803_RAM, *(u8 *)val);
}
static int rv8803_nvram_read(void *priv, unsigned int offset,
@@ -524,7 +509,7 @@
static int rv8803_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
- struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+ struct i2c_adapter *adapter = client->adapter;
struct rv8803_data *rv8803;
int err, flags;
struct nvmem_config nvmem_cfg = {
@@ -571,9 +556,8 @@
dev_warn(&client->dev, "An alarm maybe have been missed.\n");
rv8803->rtc = devm_rtc_allocate_device(&client->dev);
- if (IS_ERR(rv8803->rtc)) {
+ if (IS_ERR(rv8803->rtc))
return PTR_ERR(rv8803->rtc);
- }
if (client->irq > 0) {
err = devm_request_threaded_irq(&client->dev, client->irq,
@@ -602,6 +586,8 @@
rv8803->rtc->ops = &rv8803_rtc_ops;
rv8803->rtc->nvram_old_abi = true;
+ rv8803->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
+ rv8803->rtc->range_max = RTC_TIMESTAMP_END_2099;
err = rtc_register_device(rv8803->rtc);
if (err)
return err;
@@ -615,6 +601,7 @@
static const struct i2c_device_id rv8803_id[] = {
{ "rv8803", rv_8803 },
+ { "rx8803", rv_8803 },
{ "rx8900", rx_8900 },
{ }
};
@@ -623,6 +610,10 @@
static const struct of_device_id rv8803_of_match[] = {
{
.compatible = "microcrystal,rv8803",
+ .data = (void *)rv_8803
+ },
+ {
+ .compatible = "epson,rx8803",
.data = (void *)rv_8803
},
{
@@ -643,6 +634,6 @@
};
module_i2c_driver(rv8803_driver);
-MODULE_AUTHOR("Alexandre Belloni <alexandre.belloni@free-electrons.com>");
+MODULE_AUTHOR("Alexandre Belloni <alexandre.belloni@bootlin.com>");
MODULE_DESCRIPTION("Micro Crystal RV8803 RTC driver");
MODULE_LICENSE("GPL v2");
--
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