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drivers: sensor: add diagnostics sensor for BD8LB600FS

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Implement a sensor for the output diagnostics of the low side
switch BD8LB600FS.

Signed-off-by: Benedikt Schmidt <benedikt.schmidt@embedded-solutions.at>
This commit is contained in:
Benedikt Schmidt 2023-12-27 20:44:33 +01:00 • committed by Alberto Escolar
commit 4e4049d939
8 changed files with 160 additions and 0 deletions
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1
drivers/sensor/CMakeLists.txt
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@ -17,6 +17,7 @@ add_subdirectory_ifdef(CONFIG_AMG88XX amg88xx)
add_subdirectory_ifdef(CONFIG_AMS_AS5600 ams_as5600)
add_subdirectory_ifdef(CONFIG_AMS_IAQ_CORE ams_iAQcore)
add_subdirectory_ifdef(CONFIG_APDS9960 apds9960)
add_subdirectory_ifdef(CONFIG_BD8LB600FS_DIAGNOSTICS bd8lb600fs)
add_subdirectory_ifdef(CONFIG_BH1750 bh1750)
add_subdirectory_ifdef(CONFIG_BMA280 bma280)
add_subdirectory_ifdef(CONFIG_BMA4XX bma4xx)

1
drivers/sensor/Kconfig
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@ -97,6 +97,7 @@ source "drivers/sensor/amg88xx/Kconfig"
source "drivers/sensor/ams_as5600/Kconfig"
source "drivers/sensor/ams_iAQcore/Kconfig"
source "drivers/sensor/apds9960/Kconfig"
source "drivers/sensor/bd8lb600fs/Kconfig"
source "drivers/sensor/bh1750/Kconfig"
source "drivers/sensor/bma280/Kconfig"
source "drivers/sensor/bma4xx/Kconfig"

5
drivers/sensor/bd8lb600fs/CMakeLists.txt Normal file
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@ -0,0 +1,5 @@
# SPDX-License-Identifier: Apache-2.0
zephyr_library()
zephyr_library_sources(bd8lb600fs_diagnostics.c)

12
drivers/sensor/bd8lb600fs/Kconfig Normal file
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@ -0,0 +1,12 @@
# Copyright (c) 2024 SILA Embedded Solutions GmbH
# SPDX-License-Identifier: Apache-2.0
config BD8LB600FS_DIAGNOSTICS
bool "Sensors of BD8LB600FS"
default y
depends on DT_HAS_ROHM_BD8LB600FS_DIAGNOSTICS_ENABLED
select MFD
help
Enable driver for the open load detection, over current
protection and thermal shutdown sensors of the low side
switch BD8LB600FS.

77
drivers/sensor/bd8lb600fs/bd8lb600fs_diagnostics.c Normal file
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@ -0,0 +1,77 @@
/*
* Copyright (c) 2024 SILA Embedded Solutions GmbH
*
* SPDX-License-Identifier: Apache-2.0
*/
#define DT_DRV_COMPAT rohm_bd8lb600fs_diagnostics
#include <zephyr/drivers/sensor.h>
#include <zephyr/drivers/mfd/bd8lb600fs.h>
#include <zephyr/drivers/sensor/bd8lb600fs.h>
#include <zephyr/logging/log.h>
#include "bd8lb600fs_diagnostics.h"
LOG_MODULE_REGISTER(BD8LB600FS_DIAGNOSTICS, CONFIG_SENSOR_LOG_LEVEL);
static int bd8lb600fs_diagnostics_sample_fetch(const struct device *dev, enum sensor_channel chan)
{
const struct bd8lb600fs_diagnostics_config *config = dev->config;
struct bd8lb600fs_diagnostics_data *data = dev->data;
__ASSERT_NO_MSG(chan == SENSOR_CHAN_ALL);
return mfd_bd8lb600fs_get_output_diagnostics(config->parent_dev, &data->old,
&data->ocp_or_tsd);
}
static int bd8lb600fs_diagnostics_channel_get(const struct device *dev, enum sensor_channel chan,
struct sensor_value *val)
{
struct bd8lb600fs_diagnostics_data *data = dev->data;
switch (chan) {
case SENSOR_CHAN_BD8LB600FS_OPEN_LOAD:
val->val1 = data->old;
val->val2 = 0;
return 0;
case SENSOR_CHAN_BD8LB600FS_OVER_CURRENT_OR_THERMAL_SHUTDOWN:
val->val1 = data->ocp_or_tsd;
val->val2 = 0;
return 0;
default:
LOG_ERR("%s: requesting unsupported channel %i", dev->name, chan);
return -ENOTSUP;
}
}
static const struct sensor_driver_api bd8lb600fs_diagnostics_driver_api = {
.sample_fetch = bd8lb600fs_diagnostics_sample_fetch,
.channel_get = bd8lb600fs_diagnostics_channel_get,
};
static int bd8lb600fs_diagnostics_init(const struct device *dev)
{
const struct bd8lb600fs_diagnostics_config *config = dev->config;
if (!device_is_ready(config->parent_dev)) {
LOG_ERR("%s: parent device is not ready", dev->name);
return -ENODEV;
}
return 0;
}
#define BD8LB600FS_DIAGNOSTICS_DEFINE(inst) \
static struct bd8lb600fs_diagnostics_data bd8lb600fs_diagnostics_data_##inst; \
\
static const struct bd8lb600fs_diagnostics_config bd8lb600fs_diagnostics_config_##inst = { \
.parent_dev = DEVICE_DT_GET(DT_PARENT(DT_DRV_INST(inst))), \
}; \
\
SENSOR_DEVICE_DT_INST_DEFINE( \
inst, bd8lb600fs_diagnostics_init, NULL, &bd8lb600fs_diagnostics_data_##inst, \
&bd8lb600fs_diagnostics_config_##inst, POST_KERNEL, CONFIG_SENSOR_INIT_PRIORITY, \
&bd8lb600fs_diagnostics_driver_api);
DT_INST_FOREACH_STATUS_OKAY(BD8LB600FS_DIAGNOSTICS_DEFINE)

23
drivers/sensor/bd8lb600fs/bd8lb600fs_diagnostics.h Normal file
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@ -0,0 +1,23 @@
/*
* Copyright (c) 2024 SILA Embedded Solutions GmbH
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef ZEPHYR_DRIVERS_SENSOR_BD8LB600FS_BD8LB600FS_DIAGNOSTICS_H_
#define ZEPHYR_DRIVERS_SENSOR_BD8LB600FS_BD8LB600FS_DIAGNOSTICS_H_
#include <zephyr/device.h>
struct bd8lb600fs_diagnostics_data {
/* open load detection */
uint32_t old;
/* over current protection or thermal shutdown*/
uint32_t ocp_or_tsd;
};
struct bd8lb600fs_diagnostics_config {
const struct device *parent_dev;
};
#endif /* ZEPHYR_DRIVERS_SENSOR_BD8LB600FS_BD8LB600FS_DIAGNOSTICS_H_ */

17
dts/bindings/sensor/rohm,bd8lb600fs-diagnostics.yaml Normal file
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@ -0,0 +1,17 @@
# Copyright (c) 2024 SILA Embedded Solutions GmbH
# SPDX-License-Identifier: Apache-2.0
description: |
Open load detection, over current protection and thermal shutdown
sensor of the low side switch BD8LB600FS
compatible: "rohm,bd8lb600fs-diagnostics"
include: sensor-device.yaml
on-bus: bd8lb600fs
properties:
"#sensor-cells":
type: int
const: 0

24
include/zephyr/drivers/sensor/bd8lb600fs.h Normal file
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@ -0,0 +1,24 @@
/*
* Copyright (c) 2024 SILA Embedded Solutions GmbH
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef ZEPHYR_INCLUDE_DRIVERS_SENSOR_BD8LB600FS_H_
#define ZEPHYR_INCLUDE_DRIVERS_SENSOR_BD8LB600FS_H_
#include <zephyr/drivers/sensor.h>
enum sensor_channel_bd8lb600fs {
/**
* Open load detected,
* boolean with one bit per output
*/
SENSOR_CHAN_BD8LB600FS_OPEN_LOAD = SENSOR_ATTR_PRIV_START,
/**
* Over current protection or thermal shutdown,
* boolean with one bit per output
*/
SENSOR_CHAN_BD8LB600FS_OVER_CURRENT_OR_THERMAL_SHUTDOWN,
};
#endif /* ZEPHYR_INCLUDE_DRIVERS_SENSOR_BD8LB600FS_H_ */