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-ds2404.c | 78 ++++++++++++--------------------------
1 files changed, 25 insertions(+), 53 deletions(-)
diff --git a/kernel/drivers/rtc/rtc-ds2404.c b/kernel/drivers/rtc/rtc-ds2404.c
index b886b6a..9df0c44 100644
--- a/kernel/drivers/rtc/rtc-ds2404.c
+++ b/kernel/drivers/rtc/rtc-ds2404.c
@@ -1,11 +1,5 @@
-/*
- * Copyright (C) 2012 Sven Schnelle <svens@stackframe.org>
- *
- * 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.
- *
- */
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2012 Sven Schnelle <svens@stackframe.org>
#include <linux/platform_device.h>
#include <linux/module.h>
@@ -29,14 +23,6 @@
#define DS2404_COPY_SCRATCHPAD_CMD 0x55
#define DS2404_READ_MEMORY_CMD 0xf0
-struct ds2404;
-
-struct ds2404_chip_ops {
- int (*map_io)(struct ds2404 *chip, struct platform_device *pdev,
- struct ds2404_platform_data *pdata);
- void (*unmap_io)(struct ds2404 *chip);
-};
-
#define DS2404_RST 0
#define DS2404_CLK 1
#define DS2404_DQ 2
@@ -48,7 +34,6 @@
struct ds2404 {
struct ds2404_gpio *gpio;
- const struct ds2404_chip_ops *ops;
struct rtc_device *rtc;
};
@@ -87,18 +72,13 @@
return err;
}
-static void ds2404_gpio_unmap(struct ds2404 *chip)
+static void ds2404_gpio_unmap(void *data)
{
int i;
for (i = 0; i < ARRAY_SIZE(ds2404_gpio); i++)
gpio_free(ds2404_gpio[i].gpio);
}
-
-static const struct ds2404_chip_ops ds2404_gpio_ops = {
- .map_io = ds2404_gpio_map,
- .unmap_io = ds2404_gpio_unmap,
-};
static void ds2404_reset(struct device *dev)
{
@@ -202,24 +182,25 @@
static int ds2404_read_time(struct device *dev, struct rtc_time *dt)
{
unsigned long time = 0;
+ __le32 hw_time = 0;
- ds2404_read_memory(dev, 0x203, 4, (u8 *)&time);
- time = le32_to_cpu(time);
+ ds2404_read_memory(dev, 0x203, 4, (u8 *)&hw_time);
+ time = le32_to_cpu(hw_time);
- rtc_time_to_tm(time, dt);
+ rtc_time64_to_tm(time, dt);
return 0;
}
-static int ds2404_set_mmss(struct device *dev, unsigned long secs)
+static int ds2404_set_time(struct device *dev, struct rtc_time *dt)
{
- u32 time = cpu_to_le32(secs);
+ u32 time = cpu_to_le32(rtc_tm_to_time64(dt));
ds2404_write_memory(dev, 0x203, 4, (u8 *)&time);
return 0;
}
static const struct rtc_class_ops ds2404_rtc_ops = {
.read_time = ds2404_read_time,
- .set_mmss = ds2404_set_mmss,
+ .set_time = ds2404_set_time,
};
static int rtc_probe(struct platform_device *pdev)
@@ -232,11 +213,17 @@
if (!chip)
return -ENOMEM;
- chip->ops = &ds2404_gpio_ops;
+ chip->rtc = devm_rtc_allocate_device(&pdev->dev);
+ if (IS_ERR(chip->rtc))
+ return PTR_ERR(chip->rtc);
- retval = chip->ops->map_io(chip, pdev, pdata);
+ retval = ds2404_gpio_map(chip, pdev, pdata);
if (retval)
- goto err_chip;
+ return retval;
+
+ retval = devm_add_action_or_reset(&pdev->dev, ds2404_gpio_unmap, chip);
+ if (retval)
+ return retval;
dev_info(&pdev->dev, "using GPIOs RST:%d, CLK:%d, DQ:%d\n",
chip->gpio[DS2404_RST].gpio, chip->gpio[DS2404_CLK].gpio,
@@ -244,34 +231,19 @@
platform_set_drvdata(pdev, chip);
- chip->rtc = devm_rtc_device_register(&pdev->dev, "ds2404",
- &ds2404_rtc_ops, THIS_MODULE);
- if (IS_ERR(chip->rtc)) {
- retval = PTR_ERR(chip->rtc);
- goto err_io;
- }
+ chip->rtc->ops = &ds2404_rtc_ops;
+ chip->rtc->range_max = U32_MAX;
+
+ retval = rtc_register_device(chip->rtc);
+ if (retval)
+ return retval;
ds2404_enable_osc(&pdev->dev);
- return 0;
-
-err_io:
- chip->ops->unmap_io(chip);
-err_chip:
- return retval;
-}
-
-static int rtc_remove(struct platform_device *dev)
-{
- struct ds2404 *chip = platform_get_drvdata(dev);
-
- chip->ops->unmap_io(chip);
-
return 0;
}
static struct platform_driver rtc_device_driver = {
.probe = rtc_probe,
- .remove = rtc_remove,
.driver = {
.name = "ds2404",
},
--
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