mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 08:19:28 +00:00
![Alexandru Ardelean](/assets/img/avatar_default.png)
All drivers that already call devm_iio_kfifo_allocate() & iio_device_attach_buffer() are simple to convert to iio_device_attach_kfifo_buffer() in a single go. This change does that; the unwind order is preserved. What is important, is that the devm_iio_kfifo_buffer_setup() be called after the indio_dev->modes is assigned, to make sure that INDIO_BUFFER_SOFTWARE flag is set and not overridden by the assignment to indio_dev->modes. Also, the INDIO_BUFFER_SOFTWARE has been removed from the assignments of 'indio_dev->modes' because it is set by devm_iio_kfifo_buffer_setup(). Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Reviewed-by: Gwendal Grignou <gwendal@chromium.org> Reviewed-by: Matt Ranostay <matt.ranostay@konsulko.com>x Link: https://lore.kernel.org/r/20210215104043.91251-4-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
144 lines
3.7 KiB
C
144 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Copyright (C) 2014, Samsung Electronics Co. Ltd. All Rights Reserved.
|
|
*/
|
|
|
|
#include <linux/iio/common/ssp_sensors.h>
|
|
#include <linux/iio/iio.h>
|
|
#include <linux/iio/buffer.h>
|
|
#include <linux/iio/kfifo_buf.h>
|
|
#include <linux/module.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/slab.h>
|
|
#include "../common/ssp_sensors/ssp_iio_sensor.h"
|
|
|
|
#define SSP_CHANNEL_COUNT 3
|
|
|
|
#define SSP_ACCEL_NAME "ssp-accelerometer"
|
|
static const char ssp_accel_device_name[] = SSP_ACCEL_NAME;
|
|
|
|
enum ssp_accel_3d_channel {
|
|
SSP_CHANNEL_SCAN_INDEX_X,
|
|
SSP_CHANNEL_SCAN_INDEX_Y,
|
|
SSP_CHANNEL_SCAN_INDEX_Z,
|
|
SSP_CHANNEL_SCAN_INDEX_TIME,
|
|
};
|
|
|
|
static int ssp_accel_read_raw(struct iio_dev *indio_dev,
|
|
struct iio_chan_spec const *chan, int *val,
|
|
int *val2, long mask)
|
|
{
|
|
u32 t;
|
|
struct ssp_data *data = dev_get_drvdata(indio_dev->dev.parent->parent);
|
|
|
|
switch (mask) {
|
|
case IIO_CHAN_INFO_SAMP_FREQ:
|
|
t = ssp_get_sensor_delay(data, SSP_ACCELEROMETER_SENSOR);
|
|
ssp_convert_to_freq(t, val, val2);
|
|
return IIO_VAL_INT_PLUS_MICRO;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int ssp_accel_write_raw(struct iio_dev *indio_dev,
|
|
struct iio_chan_spec const *chan, int val,
|
|
int val2, long mask)
|
|
{
|
|
int ret;
|
|
struct ssp_data *data = dev_get_drvdata(indio_dev->dev.parent->parent);
|
|
|
|
switch (mask) {
|
|
case IIO_CHAN_INFO_SAMP_FREQ:
|
|
ret = ssp_convert_to_time(val, val2);
|
|
ret = ssp_change_delay(data, SSP_ACCELEROMETER_SENSOR, ret);
|
|
if (ret < 0)
|
|
dev_err(&indio_dev->dev, "accel sensor enable fail\n");
|
|
|
|
return ret;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static const struct iio_info ssp_accel_iio_info = {
|
|
.read_raw = &ssp_accel_read_raw,
|
|
.write_raw = &ssp_accel_write_raw,
|
|
};
|
|
|
|
static const unsigned long ssp_accel_scan_mask[] = { 0x7, 0, };
|
|
|
|
static const struct iio_chan_spec ssp_acc_channels[] = {
|
|
SSP_CHANNEL_AG(IIO_ACCEL, IIO_MOD_X, SSP_CHANNEL_SCAN_INDEX_X),
|
|
SSP_CHANNEL_AG(IIO_ACCEL, IIO_MOD_Y, SSP_CHANNEL_SCAN_INDEX_Y),
|
|
SSP_CHANNEL_AG(IIO_ACCEL, IIO_MOD_Z, SSP_CHANNEL_SCAN_INDEX_Z),
|
|
SSP_CHAN_TIMESTAMP(SSP_CHANNEL_SCAN_INDEX_TIME),
|
|
};
|
|
|
|
static int ssp_process_accel_data(struct iio_dev *indio_dev, void *buf,
|
|
int64_t timestamp)
|
|
{
|
|
return ssp_common_process_data(indio_dev, buf, SSP_ACCELEROMETER_SIZE,
|
|
timestamp);
|
|
}
|
|
|
|
static const struct iio_buffer_setup_ops ssp_accel_buffer_ops = {
|
|
.postenable = &ssp_common_buffer_postenable,
|
|
.postdisable = &ssp_common_buffer_postdisable,
|
|
};
|
|
|
|
static int ssp_accel_probe(struct platform_device *pdev)
|
|
{
|
|
int ret;
|
|
struct iio_dev *indio_dev;
|
|
struct ssp_sensor_data *spd;
|
|
|
|
indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*spd));
|
|
if (!indio_dev)
|
|
return -ENOMEM;
|
|
|
|
spd = iio_priv(indio_dev);
|
|
|
|
spd->process_data = ssp_process_accel_data;
|
|
spd->type = SSP_ACCELEROMETER_SENSOR;
|
|
|
|
indio_dev->name = ssp_accel_device_name;
|
|
indio_dev->info = &ssp_accel_iio_info;
|
|
indio_dev->channels = ssp_acc_channels;
|
|
indio_dev->num_channels = ARRAY_SIZE(ssp_acc_channels);
|
|
indio_dev->available_scan_masks = ssp_accel_scan_mask;
|
|
|
|
ret = devm_iio_kfifo_buffer_setup(&pdev->dev, indio_dev,
|
|
INDIO_BUFFER_SOFTWARE,
|
|
&ssp_accel_buffer_ops);
|
|
if (ret)
|
|
return ret;
|
|
|
|
platform_set_drvdata(pdev, indio_dev);
|
|
|
|
ret = devm_iio_device_register(&pdev->dev, indio_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* ssp registering should be done after all iio setup */
|
|
ssp_register_consumer(indio_dev, SSP_ACCELEROMETER_SENSOR);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver ssp_accel_driver = {
|
|
.driver = {
|
|
.name = SSP_ACCEL_NAME,
|
|
},
|
|
.probe = ssp_accel_probe,
|
|
};
|
|
|
|
module_platform_driver(ssp_accel_driver);
|
|
|
|
MODULE_AUTHOR("Karol Wrona <k.wrona@samsung.com>");
|
|
MODULE_DESCRIPTION("Samsung sensorhub accelerometers driver");
|
|
MODULE_LICENSE("GPL");
|