修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/drivers/iio/dac/ti-dac5571.c
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..
@@ -1,28 +1,24 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * ti-dac5571.c - Texas Instruments 8/10/12-bit 1/4-channel DAC driver
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  *
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  * Copyright (C) 2018 Prevas A/S
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  *
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- * http://www.ti.com/lit/ds/symlink/dac5571.pdf
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- * http://www.ti.com/lit/ds/symlink/dac6571.pdf
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- * http://www.ti.com/lit/ds/symlink/dac7571.pdf
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- * http://www.ti.com/lit/ds/symlink/dac5574.pdf
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- * http://www.ti.com/lit/ds/symlink/dac6574.pdf
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- * http://www.ti.com/lit/ds/symlink/dac7574.pdf
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- * http://www.ti.com/lit/ds/symlink/dac5573.pdf
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- * http://www.ti.com/lit/ds/symlink/dac6573.pdf
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- * http://www.ti.com/lit/ds/symlink/dac7573.pdf
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License (version 2) as
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- * published by the Free Software Foundation.
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+ * https://www.ti.com/lit/ds/symlink/dac5571.pdf
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+ * https://www.ti.com/lit/ds/symlink/dac6571.pdf
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+ * https://www.ti.com/lit/ds/symlink/dac7571.pdf
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+ * https://www.ti.com/lit/ds/symlink/dac5574.pdf
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+ * https://www.ti.com/lit/ds/symlink/dac6574.pdf
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+ * https://www.ti.com/lit/ds/symlink/dac7574.pdf
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+ * https://www.ti.com/lit/ds/symlink/dac5573.pdf
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+ * https://www.ti.com/lit/ds/symlink/dac6573.pdf
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+ * https://www.ti.com/lit/ds/symlink/dac7573.pdf
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  */
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 #include <linux/iio/iio.h>
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 #include <linux/i2c.h>
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 #include <linux/module.h>
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-#include <linux/of_device.h>
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-#include <linux/of.h>
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+#include <linux/mod_devicetable.h>
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 #include <linux/regulator/consumer.h>
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23
 
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 enum chip_id {
..
..
@@ -50,8 +46,8 @@
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 	struct mutex lock;
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 	struct regulator *vref;
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 	u16 val[4];
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-	bool powerdown;
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-	u8 powerdown_mode;
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+	bool powerdown[4];
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+	u8 powerdown_mode[4];
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 	struct dac5571_spec const *spec;
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 	int (*dac5571_cmd)(struct dac5571_data *data, int channel, u16 val);
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 	int (*dac5571_pwrdwn)(struct dac5571_data *data, int channel, u8 pwrdwn);
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@@ -128,7 +124,7 @@
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 {
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 	struct dac5571_data *data = iio_priv(indio_dev);
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-	return data->powerdown_mode;
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+	return data->powerdown_mode[chan->channel];
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 }
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 static int dac5571_set_powerdown_mode(struct iio_dev *indio_dev,
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@@ -138,17 +134,17 @@
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 	struct dac5571_data *data = iio_priv(indio_dev);
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 	int ret = 0;
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-	if (data->powerdown_mode == mode)
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+	if (data->powerdown_mode[chan->channel] == mode)
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 		return 0;
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 	mutex_lock(&data->lock);
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-	if (data->powerdown) {
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+	if (data->powerdown[chan->channel]) {
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 		ret = data->dac5571_pwrdwn(data, chan->channel,
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 					   DAC5571_POWERDOWN(mode));
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 		if (ret)
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 			goto out;
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 	}
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-	data->powerdown_mode = mode;
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+	data->powerdown_mode[chan->channel] = mode;
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  out:
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 	mutex_unlock(&data->lock);
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@@ -170,7 +166,7 @@
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 {
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 	struct dac5571_data *data = iio_priv(indio_dev);
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-	return sprintf(buf, "%d\n", data->powerdown);
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+	return sprintf(buf, "%d\n", data->powerdown[chan->channel]);
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 }
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 static ssize_t dac5571_write_powerdown(struct iio_dev *indio_dev,
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@@ -186,19 +182,20 @@
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 	if (ret)
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 		return ret;
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-	if (data->powerdown == powerdown)
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+	if (data->powerdown[chan->channel] == powerdown)
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 		return len;
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 	mutex_lock(&data->lock);
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 	if (powerdown)
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 		ret = data->dac5571_pwrdwn(data, chan->channel,
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-			    DAC5571_POWERDOWN(data->powerdown_mode));
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+			    DAC5571_POWERDOWN(data->powerdown_mode[chan->channel]));
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 	else
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-		ret = data->dac5571_cmd(data, chan->channel, data->val[0]);
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+		ret = data->dac5571_cmd(data, chan->channel,
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+				data->val[chan->channel]);
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 	if (ret)
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 		goto out;
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-	data->powerdown = powerdown;
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+	data->powerdown[chan->channel] = powerdown;
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  out:
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 	mutex_unlock(&data->lock);
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@@ -212,9 +209,9 @@
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 		.name	   = "powerdown",
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 		.read	   = dac5571_read_powerdown,
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 		.write	   = dac5571_write_powerdown,
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-		.shared	   = IIO_SHARED_BY_TYPE,
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+		.shared	   = IIO_SEPARATE,
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 	},
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-	IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE, &dac5571_powerdown_mode),
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+	IIO_ENUM("powerdown_mode", IIO_SEPARATE, &dac5571_powerdown_mode),
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 	IIO_ENUM_AVAILABLE("powerdown_mode", &dac5571_powerdown_mode),
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 	{},
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 };
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@@ -279,7 +276,7 @@
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 		if (val >= (1 << data->spec->resolution) || val < 0)
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 			return -EINVAL;
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-		if (data->powerdown)
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+		if (data->powerdown[chan->channel])
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 			return -EBUSY;
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 		mutex_lock(&data->lock);
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@@ -324,8 +321,6 @@
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 	i2c_set_clientdata(client, indio_dev);
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 	data->client = client;
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-	indio_dev->dev.parent = dev;
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-	indio_dev->dev.of_node = client->dev.of_node;
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 	indio_dev->info = &dac5571_info;
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 	indio_dev->name = id->name;
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 	indio_dev->modes = INDIO_DIRECT_MODE;
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@@ -389,7 +384,6 @@
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 	return 0;
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 }
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-#ifdef CONFIG_OF
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 static const struct of_device_id dac5571_of_id[] = {
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 	{.compatible = "ti,dac5571"},
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 	{.compatible = "ti,dac6571"},
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@@ -403,7 +397,6 @@
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 	{}
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 };
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 MODULE_DEVICE_TABLE(of, dac5571_of_id);
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-#endif
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 static const struct i2c_device_id dac5571_id[] = {
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 	{"dac5571", single_8bit},
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@@ -422,6 +415,7 @@
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 static struct i2c_driver dac5571_driver = {
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 	.driver = {
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 		   .name = "ti-dac5571",
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+		   .of_match_table = dac5571_of_id,
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 	},
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 	.probe	  = dac5571_probe,
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 	.remove   = dac5571_remove,
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@@ -429,6 +423,6 @@
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 };
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 module_i2c_driver(dac5571_driver);
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-MODULE_AUTHOR("Sean Nyekjaer <sean.nyekjaer@prevas.dk>");
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+MODULE_AUTHOR("Sean Nyekjaer <sean@geanix.dk>");
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 MODULE_DESCRIPTION("Texas Instruments 8/10/12-bit 1/4-channel DAC driver");
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 MODULE_LICENSE("GPL v2");