From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/drivers/iio/dac/mcp4725.c | 63 ++++++++++++-------------------
1 files changed, 25 insertions(+), 38 deletions(-)
diff --git a/kernel/drivers/iio/dac/mcp4725.c b/kernel/drivers/iio/dac/mcp4725.c
index 30dc277..0c0e726 100644
--- a/kernel/drivers/iio/dac/mcp4725.c
+++ b/kernel/drivers/iio/dac/mcp4725.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* mcp4725.c - Support for Microchip MCP4725/6
*
* Copyright (C) 2012 Peter Meerwald <pmeerw@pmeerw.net>
*
* Based on max517 by Roland Stigge <stigge@antcom.de>
- *
- * This file is subject to the terms and conditions of version 2 of
- * the GNU General Public License. See the file COPYING in the main
- * directory of this archive for more details.
*
* driver for the Microchip I2C 12-bit digital-to-analog converter (DAC)
* (7-bit I2C slave address 0x60, the three LSBs can be configured in
@@ -19,8 +16,8 @@
#include <linux/err.h>
#include <linux/delay.h>
#include <linux/regulator/consumer.h>
-#include <linux/of_device.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
@@ -45,39 +42,45 @@
struct regulator *vref_reg;
};
-static int mcp4725_suspend(struct device *dev)
+static int __maybe_unused mcp4725_suspend(struct device *dev)
{
struct mcp4725_data *data = iio_priv(i2c_get_clientdata(
to_i2c_client(dev)));
u8 outbuf[2];
+ int ret;
outbuf[0] = (data->powerdown_mode + 1) << 4;
outbuf[1] = 0;
data->powerdown = true;
- return i2c_master_send(data->client, outbuf, 2);
+ ret = i2c_master_send(data->client, outbuf, 2);
+ if (ret < 0)
+ return ret;
+ else if (ret != 2)
+ return -EIO;
+ return 0;
}
-static int mcp4725_resume(struct device *dev)
+static int __maybe_unused mcp4725_resume(struct device *dev)
{
struct mcp4725_data *data = iio_priv(i2c_get_clientdata(
to_i2c_client(dev)));
u8 outbuf[2];
+ int ret;
/* restore previous DAC value */
outbuf[0] = (data->dac_value >> 8) & 0xf;
outbuf[1] = data->dac_value & 0xff;
data->powerdown = false;
- return i2c_master_send(data->client, outbuf, 2);
+ ret = i2c_master_send(data->client, outbuf, 2);
+ if (ret < 0)
+ return ret;
+ else if (ret != 2)
+ return -EIO;
+ return 0;
}
-
-#ifdef CONFIG_PM_SLEEP
static SIMPLE_DEV_PM_OPS(mcp4725_pm_ops, mcp4725_suspend, mcp4725_resume);
-#define MCP4725_PM_OPS (&mcp4725_pm_ops)
-#else
-#define MCP4725_PM_OPS NULL
-#endif
static ssize_t mcp4725_store_eeprom(struct device *dev,
struct device_attribute *attr, const char *buf, size_t len)
@@ -366,29 +369,16 @@
.attrs = &mcp4725_attribute_group,
};
-#ifdef CONFIG_OF
static int mcp4725_probe_dt(struct device *dev,
struct mcp4725_platform_data *pdata)
{
- struct device_node *np = dev->of_node;
-
- if (!np)
- return -ENODEV;
-
/* check if is the vref-supply defined */
- pdata->use_vref = of_property_read_bool(np, "vref-supply");
+ pdata->use_vref = device_property_read_bool(dev, "vref-supply");
pdata->vref_buffered =
- of_property_read_bool(np, "microchip,vref-buffered");
+ device_property_read_bool(dev, "microchip,vref-buffered");
return 0;
}
-#else
-static int mcp4725_probe_dt(struct device *dev,
- struct mcp4725_platform_data *platform_data)
-{
- return -ENODEV;
-}
-#endif
static int mcp4725_probe(struct i2c_client *client,
const struct i2c_device_id *id)
@@ -407,8 +397,8 @@
data = iio_priv(indio_dev);
i2c_set_clientdata(client, indio_dev);
data->client = client;
- if (client->dev.of_node)
- data->id = (enum chip_id)of_device_get_match_data(&client->dev);
+ if (dev_fwnode(&client->dev))
+ data->id = (enum chip_id)device_get_match_data(&client->dev);
else
data->id = id->driver_data;
pdata = dev_get_platdata(&client->dev);
@@ -462,7 +452,6 @@
goto err_disable_vdd_reg;
}
- indio_dev->dev.parent = &client->dev;
indio_dev->name = id->name;
indio_dev->info = &mcp4725_info;
indio_dev->channels = &mcp472x_channel[id->driver_data];
@@ -529,7 +518,6 @@
};
MODULE_DEVICE_TABLE(i2c, mcp4725_id);
-#ifdef CONFIG_OF
static const struct of_device_id mcp4725_of_match[] = {
{
.compatible = "microchip,mcp4725",
@@ -542,13 +530,12 @@
{ }
};
MODULE_DEVICE_TABLE(of, mcp4725_of_match);
-#endif
static struct i2c_driver mcp4725_driver = {
.driver = {
.name = MCP4725_DRV_NAME,
- .of_match_table = of_match_ptr(mcp4725_of_match),
- .pm = MCP4725_PM_OPS,
+ .of_match_table = mcp4725_of_match,
+ .pm = &mcp4725_pm_ops,
},
.probe = mcp4725_probe,
.remove = mcp4725_remove,
--
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