mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-25 23:15:26 +07:00
d3be83244c
This patch applies the semantic patch: @@ expression I, P, SP; @@ I = devm_iio_device_alloc(P, SP); ... - I->dev.parent = P; It updates 302 files and does 307 deletions. This semantic patch also removes some comments like '/* Establish that the iio_dev is a child of the i2c device */' But this is is only done in case where the block is left empty. The patch does not seem to cover all cases. It looks like in some cases a different variable is used in some cases to assign the parent, but it points to the same reference. In other cases, the block covered by ... may be just too big to be covered by the semantic patch. However, this looks pretty good as well, as it does cover a big bulk of the drivers that should remove the parent assignment. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
190 lines
4.2 KiB
C
190 lines
4.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* ams-iaq-core.c - Support for AMS iAQ-Core VOC sensors
|
|
*
|
|
* Copyright (C) 2015, 2018
|
|
* Author: Matt Ranostay <matt.ranostay@konsulko.com>
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/init.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/iio/iio.h>
|
|
|
|
#define AMS_IAQCORE_DATA_SIZE 9
|
|
|
|
#define AMS_IAQCORE_VOC_CO2_IDX 0
|
|
#define AMS_IAQCORE_VOC_RESISTANCE_IDX 1
|
|
#define AMS_IAQCORE_VOC_TVOC_IDX 2
|
|
|
|
struct ams_iaqcore_reading {
|
|
__be16 co2_ppm;
|
|
u8 status;
|
|
__be32 resistance;
|
|
__be16 voc_ppb;
|
|
} __attribute__((__packed__));
|
|
|
|
struct ams_iaqcore_data {
|
|
struct i2c_client *client;
|
|
struct mutex lock;
|
|
unsigned long last_update;
|
|
|
|
struct ams_iaqcore_reading buffer;
|
|
};
|
|
|
|
static const struct iio_chan_spec ams_iaqcore_channels[] = {
|
|
{
|
|
.type = IIO_CONCENTRATION,
|
|
.channel2 = IIO_MOD_CO2,
|
|
.modified = 1,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
|
|
.address = AMS_IAQCORE_VOC_CO2_IDX,
|
|
},
|
|
{
|
|
.type = IIO_RESISTANCE,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
|
|
.address = AMS_IAQCORE_VOC_RESISTANCE_IDX,
|
|
},
|
|
{
|
|
.type = IIO_CONCENTRATION,
|
|
.channel2 = IIO_MOD_VOC,
|
|
.modified = 1,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
|
|
.address = AMS_IAQCORE_VOC_TVOC_IDX,
|
|
},
|
|
};
|
|
|
|
static int ams_iaqcore_read_measurement(struct ams_iaqcore_data *data)
|
|
{
|
|
struct i2c_client *client = data->client;
|
|
int ret;
|
|
|
|
struct i2c_msg msg = {
|
|
.addr = client->addr,
|
|
.flags = client->flags | I2C_M_RD,
|
|
.len = AMS_IAQCORE_DATA_SIZE,
|
|
.buf = (char *) &data->buffer,
|
|
};
|
|
|
|
ret = i2c_transfer(client->adapter, &msg, 1);
|
|
|
|
return (ret == AMS_IAQCORE_DATA_SIZE) ? 0 : ret;
|
|
}
|
|
|
|
static int ams_iaqcore_get_measurement(struct ams_iaqcore_data *data)
|
|
{
|
|
int ret;
|
|
|
|
/* sensor can only be polled once a second max per datasheet */
|
|
if (!time_after(jiffies, data->last_update + HZ))
|
|
return 0;
|
|
|
|
ret = ams_iaqcore_read_measurement(data);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
data->last_update = jiffies;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ams_iaqcore_read_raw(struct iio_dev *indio_dev,
|
|
struct iio_chan_spec const *chan, int *val,
|
|
int *val2, long mask)
|
|
{
|
|
struct ams_iaqcore_data *data = iio_priv(indio_dev);
|
|
int ret;
|
|
|
|
if (mask != IIO_CHAN_INFO_PROCESSED)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&data->lock);
|
|
ret = ams_iaqcore_get_measurement(data);
|
|
|
|
if (ret)
|
|
goto err_out;
|
|
|
|
switch (chan->address) {
|
|
case AMS_IAQCORE_VOC_CO2_IDX:
|
|
*val = 0;
|
|
*val2 = be16_to_cpu(data->buffer.co2_ppm);
|
|
ret = IIO_VAL_INT_PLUS_MICRO;
|
|
break;
|
|
case AMS_IAQCORE_VOC_RESISTANCE_IDX:
|
|
*val = be32_to_cpu(data->buffer.resistance);
|
|
ret = IIO_VAL_INT;
|
|
break;
|
|
case AMS_IAQCORE_VOC_TVOC_IDX:
|
|
*val = 0;
|
|
*val2 = be16_to_cpu(data->buffer.voc_ppb);
|
|
ret = IIO_VAL_INT_PLUS_NANO;
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
err_out:
|
|
mutex_unlock(&data->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct iio_info ams_iaqcore_info = {
|
|
.read_raw = ams_iaqcore_read_raw,
|
|
};
|
|
|
|
static int ams_iaqcore_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct iio_dev *indio_dev;
|
|
struct ams_iaqcore_data *data;
|
|
|
|
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
|
|
if (!indio_dev)
|
|
return -ENOMEM;
|
|
|
|
data = iio_priv(indio_dev);
|
|
i2c_set_clientdata(client, indio_dev);
|
|
data->client = client;
|
|
|
|
/* so initial reading will complete */
|
|
data->last_update = jiffies - HZ;
|
|
mutex_init(&data->lock);
|
|
|
|
indio_dev->info = &ams_iaqcore_info;
|
|
indio_dev->name = dev_name(&client->dev);
|
|
indio_dev->modes = INDIO_DIRECT_MODE;
|
|
|
|
indio_dev->channels = ams_iaqcore_channels;
|
|
indio_dev->num_channels = ARRAY_SIZE(ams_iaqcore_channels);
|
|
|
|
return devm_iio_device_register(&client->dev, indio_dev);
|
|
}
|
|
|
|
static const struct i2c_device_id ams_iaqcore_id[] = {
|
|
{ "ams-iaq-core", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, ams_iaqcore_id);
|
|
|
|
static const struct of_device_id ams_iaqcore_dt_ids[] = {
|
|
{ .compatible = "ams,iaq-core" },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, ams_iaqcore_dt_ids);
|
|
|
|
static struct i2c_driver ams_iaqcore_driver = {
|
|
.driver = {
|
|
.name = "ams-iaq-core",
|
|
.of_match_table = of_match_ptr(ams_iaqcore_dt_ids),
|
|
},
|
|
.probe = ams_iaqcore_probe,
|
|
.id_table = ams_iaqcore_id,
|
|
};
|
|
module_i2c_driver(ams_iaqcore_driver);
|
|
|
|
MODULE_AUTHOR("Matt Ranostay <matt.ranostay@konsulko.com>");
|
|
MODULE_DESCRIPTION("AMS iAQ-Core VOC sensors");
|
|
MODULE_LICENSE("GPL v2");
|