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-rw-r--r--drivers/iio/pressure/Kconfig50
-rw-r--r--drivers/iio/pressure/Makefile4
-rw-r--r--drivers/iio/pressure/hid-sensor-press.c394
-rw-r--r--drivers/iio/pressure/mpl115.c211
-rw-r--r--drivers/iio/pressure/mpl3115.c329
-rw-r--r--drivers/iio/pressure/st_pressure.h13
-rw-r--r--drivers/iio/pressure/st_pressure_buffer.c11
-rw-r--r--drivers/iio/pressure/st_pressure_core.c357
-rw-r--r--drivers/iio/pressure/st_pressure_i2c.c19
-rw-r--r--drivers/iio/pressure/st_pressure_spi.c19
10 files changed, 1287 insertions, 120 deletions
diff --git a/drivers/iio/pressure/Kconfig b/drivers/iio/pressure/Kconfig
index 9427f01e149..ffac8ac1efc 100644
--- a/drivers/iio/pressure/Kconfig
+++ b/drivers/iio/pressure/Kconfig
@@ -1,21 +1,59 @@
#
# Pressure drivers
#
-menu "Pressure Sensors"
+# When adding new entries keep the list in alphabetical order
+
+menu "Pressure sensors"
+
+config HID_SENSOR_PRESS
+ depends on HID_SENSOR_HUB
+ select IIO_BUFFER
+ select IIO_TRIGGERED_BUFFER
+ select HID_SENSOR_IIO_COMMON
+ select HID_SENSOR_IIO_TRIGGER
+ tristate "HID PRESS"
+ help
+ Say yes here to build support for the HID SENSOR
+ Pressure driver
+
+ To compile this driver as a module, choose M here: the module
+ will be called hid-sensor-press.
+
+config MPL115
+ tristate "Freescale MPL115A2 pressure sensor driver"
+ depends on I2C
+ help
+ Say yes here to build support for the Freescale MPL115A2
+ pressure sensor connected via I2C.
+
+ To compile this driver as a module, choose M here: the module
+ will be called mpl115.
+
+config MPL3115
+ tristate "Freescale MPL3115A2 pressure sensor driver"
+ depends on I2C
+ select IIO_BUFFER
+ select IIO_TRIGGERED_BUFFER
+ help
+ Say yes here to build support for the Freescale MPL3115A2
+ pressure sensor / altimeter.
+
+ To compile this driver as a module, choose M here: the module
+ will be called mpl3115.
config IIO_ST_PRESS
- tristate "STMicroelectronics pressures Driver"
+ tristate "STMicroelectronics pressure sensor Driver"
depends on (I2C || SPI_MASTER) && SYSFS
select IIO_ST_SENSORS_CORE
select IIO_ST_PRESS_I2C if (I2C)
select IIO_ST_PRESS_SPI if (SPI_MASTER)
select IIO_TRIGGERED_BUFFER if (IIO_BUFFER)
help
- Say yes here to build support for STMicroelectronics pressures:
- LPS331AP.
+ Say yes here to build support for STMicroelectronics pressure
+ sensors: LPS001WP, LPS25H, LPS331AP.
- This driver can also be built as a module. If so, will be created
- these modules:
+ This driver can also be built as a module. If so, these modules
+ will be created:
- st_pressure (core functions for the driver [it is mandatory]);
- st_pressure_i2c (necessary for the I2C devices [optional*]);
- st_pressure_spi (necessary for the SPI devices [optional*]);
diff --git a/drivers/iio/pressure/Makefile b/drivers/iio/pressure/Makefile
index d4bb33e5c84..c53d2500737 100644
--- a/drivers/iio/pressure/Makefile
+++ b/drivers/iio/pressure/Makefile
@@ -2,6 +2,10 @@
# Makefile for industrial I/O pressure drivers
#
+# When adding new entries keep the list in alphabetical order
+obj-$(CONFIG_HID_SENSOR_PRESS) += hid-sensor-press.o
+obj-$(CONFIG_MPL115) += mpl115.o
+obj-$(CONFIG_MPL3115) += mpl3115.o
obj-$(CONFIG_IIO_ST_PRESS) += st_pressure.o
st_pressure-y := st_pressure_core.o
st_pressure-$(CONFIG_IIO_BUFFER) += st_pressure_buffer.o
diff --git a/drivers/iio/pressure/hid-sensor-press.c b/drivers/iio/pressure/hid-sensor-press.c
new file mode 100644
index 00000000000..2c0d2a4fed8
--- /dev/null
+++ b/drivers/iio/pressure/hid-sensor-press.c
@@ -0,0 +1,394 @@
+/*
+ * HID Sensors Driver
+ * Copyright (c) 2014, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.
+ *
+ */
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/hid-sensor-hub.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+#include "../common/hid-sensors/hid-sensor-trigger.h"
+
+#define CHANNEL_SCAN_INDEX_PRESSURE 0
+
+struct press_state {
+ struct hid_sensor_hub_callbacks callbacks;
+ struct hid_sensor_common common_attributes;
+ struct hid_sensor_hub_attribute_info press_attr;
+ u32 press_data;
+ int scale_pre_decml;
+ int scale_post_decml;
+ int scale_precision;
+ int value_offset;
+};
+
+/* Channel definitions */
+static const struct iio_chan_spec press_channels[] = {
+ {
+ .type = IIO_PRESSURE,
+ .modified = 1,
+ .channel2 = IIO_NO_MOD,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
+ BIT(IIO_CHAN_INFO_SCALE) |
+ BIT(IIO_CHAN_INFO_SAMP_FREQ) |
+ BIT(IIO_CHAN_INFO_HYSTERESIS),
+ .scan_index = CHANNEL_SCAN_INDEX_PRESSURE,
+ }
+};
+
+/* Adjust channel real bits based on report descriptor */
+static void press_adjust_channel_bit_mask(struct iio_chan_spec *channels,
+ int channel, int size)
+{
+ channels[channel].scan_type.sign = 's';
+ /* Real storage bits will change based on the report desc. */
+ channels[channel].scan_type.realbits = size * 8;
+ /* Maximum size of a sample to capture is u32 */
+ channels[channel].scan_type.storagebits = sizeof(u32) * 8;
+}
+
+/* Channel read_raw handler */
+static int press_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int *val, int *val2,
+ long mask)
+{
+ struct press_state *press_state = iio_priv(indio_dev);
+ int report_id = -1;
+ u32 address;
+ int ret_type;
+ s32 poll_value;
+
+ *val = 0;
+ *val2 = 0;
+ switch (mask) {
+ case IIO_CHAN_INFO_RAW:
+ switch (chan->scan_index) {
+ case CHANNEL_SCAN_INDEX_PRESSURE:
+ report_id = press_state->press_attr.report_id;
+ address =
+ HID_USAGE_SENSOR_ATMOSPHERIC_PRESSURE;
+ break;
+ default:
+ report_id = -1;
+ break;
+ }
+ if (report_id >= 0) {
+ poll_value = hid_sensor_read_poll_value(
+ &press_state->common_attributes);
+ if (poll_value < 0)
+ return -EINVAL;
+ hid_sensor_power_state(&press_state->common_attributes,
+ true);
+
+ msleep_interruptible(poll_value * 2);
+
+ *val = sensor_hub_input_attr_get_raw_value(
+ press_state->common_attributes.hsdev,
+ HID_USAGE_SENSOR_PRESSURE, address,
+ report_id);
+ hid_sensor_power_state(&press_state->common_attributes,
+ false);
+ } else {
+ *val = 0;
+ return -EINVAL;
+ }
+ ret_type = IIO_VAL_INT;
+ break;
+ case IIO_CHAN_INFO_SCALE:
+ *val = press_state->scale_pre_decml;
+ *val2 = press_state->scale_post_decml;
+ ret_type = press_state->scale_precision;
+ break;
+ case IIO_CHAN_INFO_OFFSET:
+ *val = press_state->value_offset;
+ ret_type = IIO_VAL_INT;
+ break;
+ case IIO_CHAN_INFO_SAMP_FREQ:
+ ret_type = hid_sensor_read_samp_freq_value(
+ &press_state->common_attributes, val, val2);
+ break;
+ case IIO_CHAN_INFO_HYSTERESIS:
+ ret_type = hid_sensor_read_raw_hyst_value(
+ &press_state->common_attributes, val, val2);
+ break;
+ default:
+ ret_type = -EINVAL;
+ break;
+ }
+
+ return ret_type;
+}
+
+/* Channel write_raw handler */
+static int press_write_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int val,
+ int val2,
+ long mask)
+{
+ struct press_state *press_state = iio_priv(indio_dev);
+ int ret = 0;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_SAMP_FREQ:
+ ret = hid_sensor_write_samp_freq_value(
+ &press_state->common_attributes, val, val2);
+ break;
+ case IIO_CHAN_INFO_HYSTERESIS:
+ ret = hid_sensor_write_raw_hyst_value(
+ &press_state->common_attributes, val, val2);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static const struct iio_info press_info = {
+ .driver_module = THIS_MODULE,
+ .read_raw = &press_read_raw,
+ .write_raw = &press_write_raw,
+};
+
+/* Function to push data to buffer */
+static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data,
+ int len)
+{
+ dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
+ iio_push_to_buffers(indio_dev, data);
+}
+
+/* Callback handler to send event after all samples are received and captured */
+static int press_proc_event(struct hid_sensor_hub_device *hsdev,
+ unsigned usage_id,
+ void *priv)
+{
+ struct iio_dev *indio_dev = platform_get_drvdata(priv);
+ struct press_state *press_state = iio_priv(indio_dev);
+
+ dev_dbg(&indio_dev->dev, "press_proc_event\n");
+ if (atomic_read(&press_state->common_attributes.data_ready))
+ hid_sensor_push_data(indio_dev,
+ &press_state->press_data,
+ sizeof(press_state->press_data));
+
+ return 0;
+}
+
+/* Capture samples in local storage */
+static int press_capture_sample(struct hid_sensor_hub_device *hsdev,
+ unsigned usage_id,
+ size_t raw_len, char *raw_data,
+ void *priv)
+{
+ struct iio_dev *indio_dev = platform_get_drvdata(priv);
+ struct press_state *press_state = iio_priv(indio_dev);
+ int ret = -EINVAL;
+
+ switch (usage_id) {
+ case HID_USAGE_SENSOR_ATMOSPHERIC_PRESSURE:
+ press_state->press_data = *(u32 *)raw_data;
+ ret = 0;
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+/* Parse report which is specific to an usage id*/
+static int press_parse_report(struct platform_device *pdev,
+ struct hid_sensor_hub_device *hsdev,
+ struct iio_chan_spec *channels,
+ unsigned usage_id,
+ struct press_state *st)
+{
+ int ret;
+
+ ret = sensor_hub_input_get_attribute_info(hsdev, HID_INPUT_REPORT,
+ usage_id,
+ HID_USAGE_SENSOR_ATMOSPHERIC_PRESSURE,
+ &st->press_attr);
+ if (ret < 0)
+ return ret;
+ press_adjust_channel_bit_mask(channels, CHANNEL_SCAN_INDEX_PRESSURE,
+ st->press_attr.size);
+
+ dev_dbg(&pdev->dev, "press %x:%x\n", st->press_attr.index,
+ st->press_attr.report_id);
+
+ st->scale_precision = hid_sensor_format_scale(
+ HID_USAGE_SENSOR_PRESSURE,
+ &st->press_attr,
+ &st->scale_pre_decml, &st->scale_post_decml);
+
+ /* Set Sensitivity field ids, when there is no individual modifier */
+ if (st->common_attributes.sensitivity.index < 0) {
+ sensor_hub_input_get_attribute_info(hsdev,
+ HID_FEATURE_REPORT, usage_id,
+ HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
+ HID_USAGE_SENSOR_DATA_ATMOSPHERIC_PRESSURE,
+ &st->common_attributes.sensitivity);
+ dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
+ st->common_attributes.sensitivity.index,
+ st->common_attributes.sensitivity.report_id);
+ }
+ return ret;
+}
+
+/* Function to initialize the processing for usage id */
+static int hid_press_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+ static const char *name = "press";
+ struct iio_dev *indio_dev;
+ struct press_state *press_state;
+ struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
+ struct iio_chan_spec *channels;
+
+ indio_dev = devm_iio_device_alloc(&pdev->dev,
+ sizeof(struct press_state));
+ if (!indio_dev)
+ return -ENOMEM;
+ platform_set_drvdata(pdev, indio_dev);
+
+ press_state = iio_priv(indio_dev);
+ press_state->common_attributes.hsdev = hsdev;
+ press_state->common_attributes.pdev = pdev;
+
+ ret = hid_sensor_parse_common_attributes(hsdev,
+ HID_USAGE_SENSOR_PRESSURE,
+ &press_state->common_attributes);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to setup common attributes\n");
+ return ret;
+ }
+
+ channels = kmemdup(press_channels, sizeof(press_channels), GFP_KERNEL);
+ if (!channels) {
+ dev_err(&pdev->dev, "failed to duplicate channels\n");
+ return -ENOMEM;
+ }
+
+ ret = press_parse_report(pdev, hsdev, channels,
+ HID_USAGE_SENSOR_PRESSURE, press_state);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to setup attributes\n");
+ goto error_free_dev_mem;
+ }
+
+ indio_dev->channels = channels;
+ indio_dev->num_channels =
+ ARRAY_SIZE(press_channels);
+ indio_dev->dev.parent = &pdev->dev;
+ indio_dev->info = &press_info;
+ indio_dev->name = name;
+ indio_dev->modes = INDIO_DIRECT_MODE;
+
+ ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
+ NULL, NULL);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
+ goto error_free_dev_mem;
+ }
+ atomic_set(&press_state->common_attributes.data_ready, 0);
+ ret = hid_sensor_setup_trigger(indio_dev, name,
+ &press_state->common_attributes);
+ if (ret) {
+ dev_err(&pdev->dev, "trigger setup failed\n");
+ goto error_unreg_buffer_funcs;
+ }
+
+ ret = iio_device_register(indio_dev);
+ if (ret) {
+ dev_err(&pdev->dev, "device register failed\n");
+ goto error_remove_trigger;
+ }
+
+ press_state->callbacks.send_event = press_proc_event;
+ press_state->callbacks.capture_sample = press_capture_sample;
+ press_state->callbacks.pdev = pdev;
+ ret = sensor_hub_register_callback(hsdev, HID_USAGE_SENSOR_PRESSURE,
+ &press_state->callbacks);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "callback reg failed\n");
+ goto error_iio_unreg;
+ }
+
+ return ret;
+
+error_iio_unreg:
+ iio_device_unregister(indio_dev);
+error_remove_trigger:
+ hid_sensor_remove_trigger(&press_state->common_attributes);
+error_unreg_buffer_funcs:
+ iio_triggered_buffer_cleanup(indio_dev);
+error_free_dev_mem:
+ kfree(indio_dev->channels);
+ return ret;
+}
+
+/* Function to deinitialize the processing for usage id */
+static int hid_press_remove(struct platform_device *pdev)
+{
+ struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
+ struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+ struct press_state *press_state = iio_priv(indio_dev);
+
+ sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_PRESSURE);
+ iio_device_unregister(indio_dev);
+ hid_sensor_remove_trigger(&press_state->common_attributes);
+ iio_triggered_buffer_cleanup(indio_dev);
+ kfree(indio_dev->channels);
+
+ return 0;
+}
+
+static struct platform_device_id hid_press_ids[] = {
+ {
+ /* Format: HID-SENSOR-usage_id_in_hex_lowercase */
+ .name = "HID-SENSOR-200031",
+ },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, hid_press_ids);
+
+static struct platform_driver hid_press_platform_driver = {
+ .id_table = hid_press_ids,
+ .driver = {
+ .name = KBUILD_MODNAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = hid_press_probe,
+ .remove = hid_press_remove,
+};
+module_platform_driver(hid_press_platform_driver);
+
+MODULE_DESCRIPTION("HID Sensor Pressure");
+MODULE_AUTHOR("Archana Patni <archana.patni@intel.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/pressure/mpl115.c b/drivers/iio/pressure/mpl115.c
new file mode 100644
index 00000000000..f5ecd6e19f5
--- /dev/null
+++ b/drivers/iio/pressure/mpl115.c
@@ -0,0 +1,211 @@
+/*
+ * mpl115.c - Support for Freescale MPL115A2 pressure/temperature sensor
+ *
+ * Copyright (c) 2014 Peter Meerwald <pmeerw@pmeerw.net>
+ *
+ * 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.
+ *
+ * (7-bit I2C slave address 0x60)
+ *
+ * TODO: shutdown pin
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/iio/iio.h>
+#include <linux/delay.h>
+
+#define MPL115_PADC 0x00 /* pressure ADC output value, MSB first, 10 bit */
+#define MPL115_TADC 0x02 /* temperature ADC output value, MSB first, 10 bit */
+#define MPL115_A0 0x04 /* 12 bit integer, 3 bit fraction */
+#define MPL115_B1 0x06 /* 2 bit integer, 13 bit fraction */
+#define MPL115_B2 0x08 /* 1 bit integer, 14 bit fraction */
+#define MPL115_C12 0x0a /* 0 bit integer, 13 bit fraction */
+#define MPL115_CONVERT 0x12 /* convert temperature and pressure */
+
+struct mpl115_data {
+ struct i2c_client *client;
+ struct mutex lock;
+ s16 a0;
+ s16 b1, b2;
+ s16 c12;
+};
+
+static int mpl115_request(struct mpl115_data *data)
+{
+ int ret = i2c_smbus_write_byte_data(data->client, MPL115_CONVERT, 0);
+ if (ret < 0)
+ return ret;
+
+ usleep_range(3000, 4000);
+
+ return 0;
+}
+
+static int mpl115_comp_pressure(struct mpl115_data *data, int *val, int *val2)
+{
+ int ret;
+ u16 padc, tadc;
+ int a1, y1, pcomp;
+ unsigned kpa;
+
+ mutex_lock(&data->lock);
+ ret = mpl115_request(data);
+ if (ret < 0)
+ goto done;
+
+ ret = i2c_smbus_read_word_swapped(data->client, MPL115_PADC);
+ if (ret < 0)
+ goto done;
+ padc = ret >> 6;
+
+ ret = i2c_smbus_read_word_swapped(data->client, MPL115_TADC);
+ if (ret < 0)
+ goto done;
+ tadc = ret >> 6;
+
+ /* see Freescale AN3785 */
+ a1 = data->b1 + ((data->c12 * tadc) >> 11);
+ y1 = (data->a0 << 10) + a1 * padc;
+
+ /* compensated pressure with 4 fractional bits */
+ pcomp = (y1 + ((data->b2 * (int) tadc) >> 1)) >> 9;
+
+ kpa = pcomp * (115 - 50) / 1023 + (50 << 4);
+ *val = kpa >> 4;
+ *val2 = (kpa & 15) * (1000000 >> 4);
+done:
+ mutex_unlock(&data->lock);
+ return ret;
+}
+
+static int mpl115_read_temp(struct mpl115_data *data)
+{
+ int ret;
+
+ mutex_lock(&data->lock);
+ ret = mpl115_request(data);
+ if (ret < 0)
+ goto done;
+ ret = i2c_smbus_read_word_swapped(data->client, MPL115_TADC);
+done:
+ mutex_unlock(&data->lock);
+ return ret;
+}
+
+static int mpl115_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int *val, int *val2, long mask)
+{
+ struct mpl115_data *data = iio_priv(indio_dev);
+ int ret;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_PROCESSED:
+ ret = mpl115_comp_pressure(data, val, val2);
+ if (ret < 0)
+ return ret;
+ return IIO_VAL_INT_PLUS_MICRO;
+ case IIO_CHAN_INFO_RAW:
+ /* temperature -5.35 C / LSB, 472 LSB is 25 C */
+ ret = mpl115_read_temp(data);
+ if (ret < 0)
+ return ret;
+ *val = ret >> 6;
+ return IIO_VAL_INT;
+ case IIO_CHAN_INFO_OFFSET:
+ *val = 605;
+ *val2 = 750000;
+ return IIO_VAL_INT_PLUS_MICRO;
+ case IIO_CHAN_INFO_SCALE:
+ *val = -186;
+ *val2 = 915888;
+ return IIO_VAL_INT_PLUS_MICRO;
+ }
+ return -EINVAL;
+}
+
+static const struct iio_chan_spec mpl115_channels[] = {
+ {
+ .type = IIO_PRESSURE,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
+ },
+ {
+ .type = IIO_TEMP,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ BIT(IIO_CHAN_INFO_OFFSET) | BIT(IIO_CHAN_INFO_SCALE),
+ },
+};
+
+static const struct iio_info mpl115_info = {
+ .read_raw = &mpl115_read_raw,
+ .driver_module = THIS_MODULE,
+};
+
+static int mpl115_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct mpl115_data *data;
+ struct iio_dev *indio_dev;
+ int ret;
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA))
+ return -ENODEV;
+
+ indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+ if (!indio_dev)
+ return -ENOMEM;
+
+ data = iio_priv(indio_dev);
+ data->client = client;
+ mutex_init(&data->lock);
+
+ i2c_set_clientdata(client, indio_dev);
+ indio_dev->info = &mpl115_info;
+ indio_dev->name = id->name;
+ indio_dev->dev.parent = &client->dev;
+ indio_dev->modes = INDIO_DIRECT_MODE;
+ indio_dev->channels = mpl115_channels;
+ indio_dev->num_channels = ARRAY_SIZE(mpl115_channels);
+
+ ret = i2c_smbus_read_word_swapped(data->client, MPL115_A0);
+ if (ret < 0)
+ return ret;
+ data->a0 = ret;
+ ret = i2c_smbus_read_word_swapped(data->client, MPL115_B1);
+ if (ret < 0)
+ return ret;
+ data->b1 = ret;
+ ret = i2c_smbus_read_word_swapped(data->client, MPL115_B2);
+ if (ret < 0)
+ return ret;
+ data->b2 = ret;
+ ret = i2c_smbus_read_word_swapped(data->client, MPL115_C12);
+ if (ret < 0)
+ return ret;
+ data->c12 = ret;
+
+ return devm_iio_device_register(&client->dev, indio_dev);
+}
+
+static const struct i2c_device_id mpl115_id[] = {
+ { "mpl115", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, mpl115_id);
+
+static struct i2c_driver mpl115_driver = {
+ .driver = {
+ .name = "mpl115",
+ },
+ .probe = mpl115_probe,
+ .id_table = mpl115_id,
+};
+module_i2c_driver(mpl115_driver);
+
+MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>");
+MODULE_DESCRIPTION("Freescale MPL115 pressure/temperature driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/pressure/mpl3115.c b/drivers/iio/pressure/mpl3115.c
new file mode 100644
index 00000000000..01b2e0b1887
--- /dev/null
+++ b/drivers/iio/pressure/mpl3115.c
@@ -0,0 +1,329 @@
+/*
+ * mpl3115.c - Support for Freescale MPL3115A2 pressure/temperature sensor
+ *
+ * Copyright (c) 2013 Peter Meerwald <pmeerw@pmeerw.net>
+ *
+ * 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.
+ *
+ * (7-bit I2C slave address 0x60)
+ *
+ * TODO: FIFO buffer, altimeter mode, oversampling, continuous mode,
+ * interrupts, user offset correction, raw mode
+ */
+
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/delay.h>
+
+#define MPL3115_STATUS 0x00
+#define MPL3115_OUT_PRESS 0x01 /* MSB first, 20 bit */
+#define MPL3115_OUT_TEMP 0x04 /* MSB first, 12 bit */
+#define MPL3115_WHO_AM_I 0x0c
+#define MPL3115_CTRL_REG1 0x26
+
+#define MPL3115_DEVICE_ID 0xc4
+
+#define MPL3115_STATUS_PRESS_RDY BIT(2)
+#define MPL3115_STATUS_TEMP_RDY BIT(1)
+
+#define MPL3115_CTRL_RESET BIT(2) /* software reset */
+#define MPL3115_CTRL_OST BIT(1) /* initiate measurement */
+#define MPL3115_CTRL_ACTIVE BIT(0) /* continuous measurement */
+#define MPL3115_CTRL_OS_258MS (BIT(5) | BIT(4)) /* 64x oversampling */
+
+struct mpl3115_data {
+ struct i2c_client *client;
+ struct mutex lock;
+ u8 ctrl_reg1;
+};
+
+static int mpl3115_request(struct mpl3115_data *data)
+{
+ int ret, tries = 15;
+
+ /* trigger measurement */
+ ret = i2c_smbus_write_byte_data(data->client, MPL3115_CTRL_REG1,
+ data->ctrl_reg1 | MPL3115_CTRL_OST);
+ if (ret < 0)
+ return ret;
+
+ while (tries-- > 0) {
+ ret = i2c_smbus_read_byte_data(data->client, MPL3115_CTRL_REG1);
+ if (ret < 0)
+ return ret;
+ /* wait for data ready, i.e. OST cleared */
+ if (!(ret & MPL3115_CTRL_OST))
+ break;
+ msleep(20);
+ }
+
+ if (tries < 0) {
+ dev_err(&data->client->dev, "data not ready\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int mpl3115_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int *val, int *val2, long mask)
+{
+ struct mpl3115_data *data = iio_priv(indio_dev);
+ __be32 tmp = 0;
+ int ret;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_RAW:
+ if (iio_buffer_enabled(indio_dev))
+ return -EBUSY;
+
+ switch (chan->type) {
+ case IIO_PRESSURE: /* in 0.25 pascal / LSB */
+ mutex_lock(&data->lock);
+ ret = mpl3115_request(data);
+ if (ret < 0) {
+ mutex_unlock(&data->lock);
+ return ret;
+ }
+ ret = i2c_smbus_read_i2c_block_data(data->client,
+ MPL3115_OUT_PRESS, 3, (u8 *) &tmp);
+ mutex_unlock(&data->lock);
+ if (ret < 0)
+ return ret;
+ *val = be32_to_cpu(tmp) >> 12;
+ return IIO_VAL_INT;
+ case IIO_TEMP: /* in 0.0625 celsius / LSB */
+ mutex_lock(&data->lock);
+ ret = mpl3115_request(data);
+ if (ret < 0) {
+ mutex_unlock(&data->lock);
+ return ret;
+ }
+ ret = i2c_smbus_read_i2c_block_data(data->client,
+ MPL3115_OUT_TEMP, 2, (u8 *) &tmp);
+ mutex_unlock(&data->lock);
+ if (ret < 0)
+ return ret;
+ *val = sign_extend32(be32_to_cpu(tmp) >> 20, 11);
+ return IIO_VAL_INT;
+ default:
+ return -EINVAL;
+ }
+ case IIO_CHAN_INFO_SCALE:
+ switch (chan->type) {
+ case IIO_PRESSURE:
+ *val = 0;
+ *val2 = 250; /* want kilopascal */
+ return IIO_VAL_INT_PLUS_MICRO;
+ case IIO_TEMP:
+ *val = 0;
+ *val2 = 62500;
+ return IIO_VAL_INT_PLUS_MICRO;
+ default:
+ return -EINVAL;
+ }
+ }
+ return -EINVAL;
+}
+
+static irqreturn_t mpl3115_trigger_handler(int irq, void *p)
+{
+ struct iio_poll_func *pf = p;
+ struct iio_dev *indio_dev = pf->indio_dev;
+ struct mpl3115_data *data = iio_priv(indio_dev);
+ u8 buffer[16]; /* 32-bit channel + 16-bit channel + padding + ts */
+ int ret, pos = 0;
+
+ mutex_lock(&data->lock);
+ ret = mpl3115_request(data);
+ if (ret < 0) {
+ mutex_unlock(&data->lock);
+ goto done;
+ }
+
+ memset(buffer, 0, sizeof(buffer));
+ if (test_bit(0, indio_dev->active_scan_mask)) {
+ ret = i2c_smbus_read_i2c_block_data(data->client,
+ MPL3115_OUT_PRESS, 3, &buffer[pos]);
+ if (ret < 0) {
+ mutex_unlock(&data->lock);
+ goto done;
+ }
+ pos += 4;
+ }
+
+ if (test_bit(1, indio_dev->active_scan_mask)) {
+ ret = i2c_smbus_read_i2c_block_data(data->client,
+ MPL3115_OUT_TEMP, 2, &buffer[pos]);
+ if (ret < 0) {
+ mutex_unlock(&data->lock);
+ goto done;
+ }
+ }
+ mutex_unlock(&data->lock);
+
+ iio_push_to_buffers_with_timestamp(indio_dev, buffer,
+ iio_get_time_ns());
+
+done:
+ iio_trigger_notify_done(indio_dev->trig);
+ return IRQ_HANDLED;
+}
+
+static const struct iio_chan_spec mpl3115_channels[] = {
+ {
+ .type = IIO_PRESSURE,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ BIT(IIO_CHAN_INFO_SCALE),
+ .scan_index = 0,
+ .scan_type = {
+ .sign = 'u',
+ .realbits = 20,
+ .storagebits = 32,
+ .shift = 12,
+ .endianness = IIO_BE,
+ }
+ },
+ {
+ .type = IIO_TEMP,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ BIT(IIO_CHAN_INFO_SCALE),
+ .scan_index = 1,
+ .scan_type = {
+ .sign = 's',
+ .realbits = 12,
+ .storagebits = 16,
+ .shift = 4,
+ .endianness = IIO_BE,
+ }
+ },
+ IIO_CHAN_SOFT_TIMESTAMP(2),
+};
+
+static const struct iio_info mpl3115_info = {
+ .read_raw = &mpl3115_read_raw,
+ .driver_module = THIS_MODULE,
+};
+
+static int mpl3115_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct mpl3115_data *data;
+ struct iio_dev *indio_dev;
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(client, MPL3115_WHO_AM_I);
+ if (ret < 0)
+ return ret;
+ if (ret != MPL3115_DEVICE_ID)
+ return -ENODEV;
+
+ indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+ if (!indio_dev)
+ return -ENOMEM;
+
+ data = iio_priv(indio_dev);
+ data->client = client;
+ mutex_init(&data->lock);
+
+ i2c_set_clientdata(client, indio_dev);
+ indio_dev->info = &mpl3115_info;
+ indio_dev->name = id->name;
+ indio_dev->dev.parent = &client->dev;
+ indio_dev->modes = INDIO_DIRECT_MODE;
+ indio_dev->channels = mpl3115_channels;
+ indio_dev->num_channels = ARRAY_SIZE(mpl3115_channels);
+
+ /* software reset, I2C transfer is aborted (fails) */
+ i2c_smbus_write_byte_data(client, MPL3115_CTRL_REG1,
+ MPL3115_CTRL_RESET);
+ msleep(50);
+
+ data->ctrl_reg1 = MPL3115_CTRL_OS_258MS;
+ ret = i2c_smbus_write_byte_data(client, MPL3115_CTRL_REG1,
+ data->ctrl_reg1);
+ if (ret < 0)
+ return ret;
+
+ ret = iio_triggered_buffer_setup(indio_dev, NULL,
+ mpl3115_trigger_handler, NULL);
+ if (ret < 0)
+ return ret;
+
+ ret = iio_device_register(indio_dev);
+ if (ret < 0)
+ goto buffer_cleanup;
+ return 0;
+
+buffer_cleanup:
+ iio_triggered_buffer_cleanup(indio_dev);
+ return ret;
+}
+
+static int mpl3115_standby(struct mpl3115_data *data)
+{
+ return i2c_smbus_write_byte_data(data->client, MPL3115_CTRL_REG1,
+ data->ctrl_reg1 & ~MPL3115_CTRL_ACTIVE);
+}
+
+static int mpl3115_remove(struct i2c_client *client)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(client);
+
+ iio_device_unregister(indio_dev);
+ iio_triggered_buffer_cleanup(indio_dev);
+ mpl3115_standby(iio_priv(indio_dev));
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int mpl3115_suspend(struct device *dev)
+{
+ return mpl3115_standby(iio_priv(i2c_get_clientdata(
+ to_i2c_client(dev))));
+}
+
+static int mpl3115_resume(struct device *dev)
+{
+ struct mpl3115_data *data = iio_priv(i2c_get_clientdata(
+ to_i2c_client(dev)));
+
+ return i2c_smbus_write_byte_data(data->client, MPL3115_CTRL_REG1,
+ data->ctrl_reg1);
+}
+
+static SIMPLE_DEV_PM_OPS(mpl3115_pm_ops, mpl3115_suspend, mpl3115_resume);
+#define MPL3115_PM_OPS (&mpl3115_pm_ops)
+#else
+#define MPL3115_PM_OPS NULL
+#endif
+
+static const struct i2c_device_id mpl3115_id[] = {
+ { "mpl3115", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, mpl3115_id);
+
+static struct i2c_driver mpl3115_driver = {
+ .driver = {
+ .name = "mpl3115",
+ .pm = MPL3115_PM_OPS,
+ },
+ .probe = mpl3115_probe,
+ .remove = mpl3115_remove,
+ .id_table = mpl3115_id,
+};
+module_i2c_driver(mpl3115_driver);
+
+MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>");
+MODULE_DESCRIPTION("Freescale MPL3115 pressure/temperature driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/pressure/st_pressure.h b/drivers/iio/pressure/st_pressure.h
index 414e45ac9b9..242943c0c4e 100644
--- a/drivers/iio/pressure/st_pressure.h
+++ b/drivers/iio/pressure/st_pressure.h
@@ -14,9 +14,20 @@
#include <linux/types.h>
#include <linux/iio/common/st_sensors.h>
+#define LPS001WP_PRESS_DEV_NAME "lps001wp"
+#define LPS25H_PRESS_DEV_NAME "lps25h"
#define LPS331AP_PRESS_DEV_NAME "lps331ap"
-int st_press_common_probe(struct iio_dev *indio_dev);
+/**
+ * struct st_sensors_platform_data - default press platform data
+ * @drdy_int_pin: default press DRDY is available on INT1 pin.
+ */
+static const struct st_sensors_platform_data default_press_pdata = {
+ .drdy_int_pin = 1,
+};
+
+int st_press_common_probe(struct iio_dev *indio_dev,
+ struct st_sensors_platform_data *pdata);
void st_press_common_remove(struct iio_dev *indio_dev);
#ifdef CONFIG_IIO_BUFFER
diff --git a/drivers/iio/pressure/st_pressure_buffer.c b/drivers/iio/pressure/st_pressure_buffer.c
index f877ef8af52..b37b1c9ac93 100644
--- a/drivers/iio/pressure/st_pressure_buffer.c
+++ b/drivers/iio/pressure/st_pressure_buffer.c
@@ -32,16 +32,7 @@ int st_press_trig_set_state(struct iio_trigger *trig, bool state)
static int st_press_buffer_preenable(struct iio_dev *indio_dev)
{
- int err;
-
- err = st_sensors_set_enable(indio_dev, true);
- if (err < 0)
- goto st_press_set_enable_error;
-
- err = iio_sw_buffer_preenable(indio_dev);
-
-st_press_set_enable_error:
- return err;
+ return st_sensors_set_enable(indio_dev, true);
}
static int st_press_buffer_postenable(struct iio_dev *indio_dev)
diff --git a/drivers/iio/pressure/st_pressure_core.c b/drivers/iio/pressure/st_pressure_core.c
index 3ffbc56917b..cd7e01f3a93 100644
--- a/drivers/iio/pressure/st_pressure_core.c
+++ b/drivers/iio/pressure/st_pressure_core.c
@@ -31,94 +31,278 @@
#define ST_PRESS_LSB_PER_MBAR 4096UL
#define ST_PRESS_KPASCAL_NANO_SCALE (100000000UL / \
ST_PRESS_LSB_PER_MBAR)
+#define ST_PRESS_LSB_PER_CELSIUS 480UL
+#define ST_PRESS_CELSIUS_NANO_SCALE (1000000000UL / \
+ ST_PRESS_LSB_PER_CELSIUS)
#define ST_PRESS_NUMBER_DATA_CHANNELS 1
-/* DEFAULT VALUE FOR SENSORS */
-#define ST_PRESS_DEFAULT_OUT_XL_ADDR 0x28
-#define ST_TEMP_DEFAULT_OUT_L_ADDR 0x2b
-
/* FULLSCALE */
#define ST_PRESS_FS_AVL_1260MB 1260
-/* CUSTOM VALUES FOR SENSOR 1 */
-#define ST_PRESS_1_WAI_EXP 0xbb
-#define ST_PRESS_1_ODR_ADDR 0x20
-#define ST_PRESS_1_ODR_MASK 0x70
-#define ST_PRESS_1_ODR_AVL_1HZ_VAL 0x01
-#define ST_PRESS_1_ODR_AVL_7HZ_VAL 0x05
-#define ST_PRESS_1_ODR_AVL_13HZ_VAL 0x06
-#define ST_PRESS_1_ODR_AVL_25HZ_VAL 0x07
-#define ST_PRESS_1_PW_ADDR 0x20
-#define ST_PRESS_1_PW_MASK 0x80
-#define ST_PRESS_1_FS_ADDR 0x23
-#define ST_PRESS_1_FS_MASK 0x30
-#define ST_PRESS_1_FS_AVL_1260_VAL 0x00
-#define ST_PRESS_1_FS_AVL_TEMP_GAIN 2083000
-#define ST_PRESS_1_FS_AVL_1260_GAIN ST_PRESS_KPASCAL_NANO_SCALE
-#define ST_PRESS_1_BDU_ADDR 0x20
-#define ST_PRESS_1_BDU_MASK 0x04
-#define ST_PRESS_1_DRDY_IRQ_ADDR 0x22
-#define ST_PRESS_1_DRDY_IRQ_MASK 0x04
-#define ST_PRESS_1_MULTIREAD_BIT true
-#define ST_PRESS_1_TEMP_OFFSET 42500
-
-static const struct iio_chan_spec st_press_channels[] = {
- ST_SENSORS_LSM_CHANNELS(IIO_PRESSURE,
+#define ST_PRESS_1_OUT_XL_ADDR 0x28
+#define ST_TEMP_1_OUT_L_ADDR 0x2b
+
+/* CUSTOM VALUES FOR LPS331AP SENSOR */
+#define ST_PRESS_LPS331AP_WAI_EXP 0xbb
+#define ST_PRESS_LPS331AP_ODR_ADDR 0x20
+#define ST_PRESS_LPS331AP_ODR_MASK 0x70
+#define ST_PRESS_LPS331AP_ODR_AVL_1HZ_VAL 0x01
+#define ST_PRESS_LPS331AP_ODR_AVL_7HZ_VAL 0x05
+#define ST_PRESS_LPS331AP_ODR_AVL_13HZ_VAL 0x06
+#define ST_PRESS_LPS331AP_ODR_AVL_25HZ_VAL 0x07
+#define ST_PRESS_LPS331AP_PW_ADDR 0x20
+#define ST_PRESS_LPS331AP_PW_MASK 0x80
+#define ST_PRESS_LPS331AP_FS_ADDR 0x23
+#define ST_PRESS_LPS331AP_FS_MASK 0x30
+#define ST_PRESS_LPS331AP_FS_AVL_1260_VAL 0x00
+#define ST_PRESS_LPS331AP_FS_AVL_1260_GAIN ST_PRESS_KPASCAL_NANO_SCALE
+#define ST_PRESS_LPS331AP_FS_AVL_TEMP_GAIN ST_PRESS_CELSIUS_NANO_SCALE
+#define ST_PRESS_LPS331AP_BDU_ADDR 0x20
+#define ST_PRESS_LPS331AP_BDU_MASK 0x04
+#define ST_PRESS_LPS331AP_DRDY_IRQ_ADDR 0x22
+#define ST_PRESS_LPS331AP_DRDY_IRQ_INT1_MASK 0x04
+#define ST_PRESS_LPS331AP_DRDY_IRQ_INT2_MASK 0x20
+#define ST_PRESS_LPS331AP_MULTIREAD_BIT true
+#define ST_PRESS_LPS331AP_TEMP_OFFSET 42500
+
+/* CUSTOM VALUES FOR LPS001WP SENSOR */
+#define ST_PRESS_LPS001WP_WAI_EXP 0xba
+#define ST_PRESS_LPS001WP_ODR_ADDR 0x20
+#define ST_PRESS_LPS001WP_ODR_MASK 0x30
+#define ST_PRESS_LPS001WP_ODR_AVL_1HZ_VAL 0x01
+#define ST_PRESS_LPS001WP_ODR_AVL_7HZ_VAL 0x02
+#define ST_PRESS_LPS001WP_ODR_AVL_13HZ_VAL 0x03
+#define ST_PRESS_LPS001WP_PW_ADDR 0x20
+#define ST_PRESS_LPS001WP_PW_MASK 0x40
+#define ST_PRESS_LPS001WP_BDU_ADDR 0x20
+#define ST_PRESS_LPS001WP_BDU_MASK 0x04
+#define ST_PRESS_LPS001WP_MULTIREAD_BIT true
+#define ST_PRESS_LPS001WP_OUT_L_ADDR 0x28
+#define ST_TEMP_LPS001WP_OUT_L_ADDR 0x2a
+
+/* CUSTOM VALUES FOR LPS25H SENSOR */
+#define ST_PRESS_LPS25H_WAI_EXP 0xbd
+#define ST_PRESS_LPS25H_ODR_ADDR 0x20
+#define ST_PRESS_LPS25H_ODR_MASK 0x70
+#define ST_PRESS_LPS25H_ODR_AVL_1HZ_VAL 0x01
+#define ST_PRESS_LPS25H_ODR_AVL_7HZ_VAL 0x02
+#define ST_PRESS_LPS25H_ODR_AVL_13HZ_VAL 0x03
+#define ST_PRESS_LPS25H_ODR_AVL_25HZ_VAL 0x04
+#define ST_PRESS_LPS25H_PW_ADDR 0x20
+#define ST_PRESS_LPS25H_PW_MASK 0x80
+#define ST_PRESS_LPS25H_FS_ADDR 0x00
+#define ST_PRESS_LPS25H_FS_MASK 0x00
+#define ST_PRESS_LPS25H_FS_AVL_1260_VAL 0x00
+#define ST_PRESS_LPS25H_FS_AVL_1260_GAIN ST_PRESS_KPASCAL_NANO_SCALE
+#define ST_PRESS_LPS25H_FS_AVL_TEMP_GAIN ST_PRESS_CELSIUS_NANO_SCALE
+#define ST_PRESS_LPS25H_BDU_ADDR 0x20
+#define ST_PRESS_LPS25H_BDU_MASK 0x04
+#define ST_PRESS_LPS25H_DRDY_IRQ_ADDR 0x23
+#define ST_PRESS_LPS25H_DRDY_IRQ_INT1_MASK 0x01
+#define ST_PRESS_LPS25H_DRDY_IRQ_INT2_MASK 0x10
+#define ST_PRESS_LPS25H_MULTIREAD_BIT true
+#define ST_PRESS_LPS25H_TEMP_OFFSET 42500
+#define ST_PRESS_LPS25H_OUT_XL_ADDR 0x28
+#define ST_TEMP_LPS25H_OUT_L_ADDR 0x2b
+
+static const struct iio_chan_spec st_press_1_channels[] = {
+ {
+ .type = IIO_PRESSURE,
+ .channel2 = IIO_NO_MOD,
+ .address = ST_PRESS_1_OUT_XL_ADDR,
+ .scan_index = ST_SENSORS_SCAN_X,
+ .scan_type = {
+ .sign = 'u',
+ .realbits = 24,
+ .storagebits = 24,
+ .endianness = IIO_LE,
+ },
+ .info_mask_separate =
BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
- ST_SENSORS_SCAN_X, 0, IIO_NO_MOD, 'u', IIO_LE, 24, 24,
- ST_PRESS_DEFAULT_OUT_XL_ADDR),
- ST_SENSORS_LSM_CHANNELS(IIO_TEMP,
- BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE) |
- BIT(IIO_CHAN_INFO_OFFSET),
- -1, 0, IIO_NO_MOD, 's', IIO_LE, 16, 16,
- ST_TEMP_DEFAULT_OUT_L_ADDR),
+ .modified = 0,
+ },
+ {
+ .type = IIO_TEMP,
+ .channel2 = IIO_NO_MOD,
+ .address = ST_TEMP_1_OUT_L_ADDR,
+ .scan_index = -1,
+ .scan_type = {
+ .sign = 'u',
+ .realbits = 16,
+ .storagebits = 16,
+ .endianness = IIO_LE,
+ },
+ .info_mask_separate =
+ BIT(IIO_CHAN_INFO_RAW) |
+ BIT(IIO_CHAN_INFO_SCALE) |
+ BIT(IIO_CHAN_INFO_OFFSET),
+ .modified = 0,
+ },
+ IIO_CHAN_SOFT_TIMESTAMP(1)
+};
+
+static const struct iio_chan_spec st_press_lps001wp_channels[] = {
+ {
+ .type = IIO_PRESSURE,
+ .channel2 = IIO_NO_MOD,
+ .address = ST_PRESS_LPS001WP_OUT_L_ADDR,
+ .scan_index = ST_SENSORS_SCAN_X,
+ .scan_type = {
+ .sign = 'u',
+ .realbits = 16,
+ .storagebits = 16,
+ .endianness = IIO_LE,
+ },
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ .modified = 0,
+ },
+ {
+ .type = IIO_TEMP,
+ .channel2 = IIO_NO_MOD,
+ .address = ST_TEMP_LPS001WP_OUT_L_ADDR,
+ .scan_index = -1,
+ .scan_type = {
+ .sign = 'u',
+ .realbits = 16,
+ .storagebits = 16,
+ .endianness = IIO_LE,
+ },
+ .info_mask_separate =
+ BIT(IIO_CHAN_INFO_RAW) |
+ BIT(IIO_CHAN_INFO_OFFSET),
+ .modified = 0,
+ },
IIO_CHAN_SOFT_TIMESTAMP(1)
};
static const struct st_sensors st_press_sensors[] = {
{
- .wai = ST_PRESS_1_WAI_EXP,
+ .wai = ST_PRESS_LPS331AP_WAI_EXP,
.sensors_supported = {
[0] = LPS331AP_PRESS_DEV_NAME,
},
- .ch = (struct iio_chan_spec *)st_press_channels,
+ .ch = (struct iio_chan_spec *)st_press_1_channels,
+ .num_ch = ARRAY_SIZE(st_press_1_channels),
+ .odr = {
+ .addr = ST_PRESS_LPS331AP_ODR_ADDR,
+ .mask = ST_PRESS_LPS331AP_ODR_MASK,
+ .odr_avl = {
+ { 1, ST_PRESS_LPS331AP_ODR_AVL_1HZ_VAL, },
+ { 7, ST_PRESS_LPS331AP_ODR_AVL_7HZ_VAL, },
+ { 13, ST_PRESS_LPS331AP_ODR_AVL_13HZ_VAL, },
+ { 25, ST_PRESS_LPS331AP_ODR_AVL_25HZ_VAL, },
+ },
+ },
+ .pw = {
+ .addr = ST_PRESS_LPS331AP_PW_ADDR,
+ .mask = ST_PRESS_LPS331AP_PW_MASK,
+ .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
+ .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
+ },
+ .fs = {
+ .addr = ST_PRESS_LPS331AP_FS_ADDR,
+ .mask = ST_PRESS_LPS331AP_FS_MASK,
+ .fs_avl = {
+ [0] = {
+ .num = ST_PRESS_FS_AVL_1260MB,
+ .value = ST_PRESS_LPS331AP_FS_AVL_1260_VAL,
+ .gain = ST_PRESS_LPS331AP_FS_AVL_1260_GAIN,
+ .gain2 = ST_PRESS_LPS331AP_FS_AVL_TEMP_GAIN,
+ },
+ },
+ },
+ .bdu = {
+ .addr = ST_PRESS_LPS331AP_BDU_ADDR,
+ .mask = ST_PRESS_LPS331AP_BDU_MASK,
+ },
+ .drdy_irq = {
+ .addr = ST_PRESS_LPS331AP_DRDY_IRQ_ADDR,
+ .mask_int1 = ST_PRESS_LPS331AP_DRDY_IRQ_INT1_MASK,
+ .mask_int2 = ST_PRESS_LPS331AP_DRDY_IRQ_INT2_MASK,
+ },
+ .multi_read_bit = ST_PRESS_LPS331AP_MULTIREAD_BIT,
+ .bootime = 2,
+ },
+ {
+ .wai = ST_PRESS_LPS001WP_WAI_EXP,
+ .sensors_supported = {
+ [0] = LPS001WP_PRESS_DEV_NAME,
+ },
+ .ch = (struct iio_chan_spec *)st_press_lps001wp_channels,
+ .num_ch = ARRAY_SIZE(st_press_lps001wp_channels),
.odr = {
- .addr = ST_PRESS_1_ODR_ADDR,
- .mask = ST_PRESS_1_ODR_MASK,
+ .addr = ST_PRESS_LPS001WP_ODR_ADDR,
+ .mask = ST_PRESS_LPS001WP_ODR_MASK,
.odr_avl = {
- { 1, ST_PRESS_1_ODR_AVL_1HZ_VAL, },
- { 7, ST_PRESS_1_ODR_AVL_7HZ_VAL, },
- { 13, ST_PRESS_1_ODR_AVL_13HZ_VAL, },
- { 25, ST_PRESS_1_ODR_AVL_25HZ_VAL, },
+ { 1, ST_PRESS_LPS001WP_ODR_AVL_1HZ_VAL, },
+ { 7, ST_PRESS_LPS001WP_ODR_AVL_7HZ_VAL, },
+ { 13, ST_PRESS_LPS001WP_ODR_AVL_13HZ_VAL, },
},
},
.pw = {
- .addr = ST_PRESS_1_PW_ADDR,
- .mask = ST_PRESS_1_PW_MASK,
+ .addr = ST_PRESS_LPS001WP_PW_ADDR,
+ .mask = ST_PRESS_LPS001WP_PW_MASK,
.value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
},
.fs = {
- .addr = ST_PRESS_1_FS_ADDR,
- .mask = ST_PRESS_1_FS_MASK,
+ .addr = 0,
+ },
+ .bdu = {
+ .addr = ST_PRESS_LPS001WP_BDU_ADDR,
+ .mask = ST_PRESS_LPS001WP_BDU_MASK,
+ },
+ .drdy_irq = {
+ .addr = 0,
+ },
+ .multi_read_bit = ST_PRESS_LPS001WP_MULTIREAD_BIT,
+ .bootime = 2,
+ },
+ {
+ .wai = ST_PRESS_LPS25H_WAI_EXP,
+ .sensors_supported = {
+ [0] = LPS25H_PRESS_DEV_NAME,
+ },
+ .ch = (struct iio_chan_spec *)st_press_1_channels,
+ .num_ch = ARRAY_SIZE(st_press_1_channels),
+ .odr = {
+ .addr = ST_PRESS_LPS25H_ODR_ADDR,
+ .mask = ST_PRESS_LPS25H_ODR_MASK,
+ .odr_avl = {
+ { 1, ST_PRESS_LPS25H_ODR_AVL_1HZ_VAL, },
+ { 7, ST_PRESS_LPS25H_ODR_AVL_7HZ_VAL, },
+ { 13, ST_PRESS_LPS25H_ODR_AVL_13HZ_VAL, },
+ { 25, ST_PRESS_LPS25H_ODR_AVL_25HZ_VAL, },
+ },
+ },
+ .pw = {
+ .addr = ST_PRESS_LPS25H_PW_ADDR,
+ .mask = ST_PRESS_LPS25H_PW_MASK,
+ .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
+ .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
+ },
+ .fs = {
+ .addr = ST_PRESS_LPS25H_FS_ADDR,
+ .mask = ST_PRESS_LPS25H_FS_MASK,
.fs_avl = {
[0] = {
.num = ST_PRESS_FS_AVL_1260MB,
- .value = ST_PRESS_1_FS_AVL_1260_VAL,
- .gain = ST_PRESS_1_FS_AVL_1260_GAIN,
- .gain2 = ST_PRESS_1_FS_AVL_TEMP_GAIN,
+ .value = ST_PRESS_LPS25H_FS_AVL_1260_VAL,
+ .gain = ST_PRESS_LPS25H_FS_AVL_1260_GAIN,
+ .gain2 = ST_PRESS_LPS25H_FS_AVL_TEMP_GAIN,
},
},
},
.bdu = {
- .addr = ST_PRESS_1_BDU_ADDR,
- .mask = ST_PRESS_1_BDU_MASK,
+ .addr = ST_PRESS_LPS25H_BDU_ADDR,
+ .mask = ST_PRESS_LPS25H_BDU_MASK,
},
.drdy_irq = {
- .addr = ST_PRESS_1_DRDY_IRQ_ADDR,
- .mask = ST_PRESS_1_DRDY_IRQ_MASK,
+ .addr = ST_PRESS_LPS25H_DRDY_IRQ_ADDR,
+ .mask_int1 = ST_PRESS_LPS25H_DRDY_IRQ_INT1_MASK,
+ .mask_int2 = ST_PRESS_LPS25H_DRDY_IRQ_INT2_MASK,
},
- .multi_read_bit = ST_PRESS_1_MULTIREAD_BIT,
+ .multi_read_bit = ST_PRESS_LPS25H_MULTIREAD_BIT,
.bootime = 2,
},
};
@@ -202,39 +386,51 @@ static const struct iio_trigger_ops st_press_trigger_ops = {
#define ST_PRESS_TRIGGER_OPS NULL
#endif
-int st_press_common_probe(struct iio_dev *indio_dev)
+int st_press_common_probe(struct iio_dev *indio_dev,
+ struct st_sensors_platform_data *plat_data)
{
- int err;
struct st_sensor_data *pdata = iio_priv(indio_dev);
+ int irq = pdata->get_irq_data_ready(indio_dev);
+ int err;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->info = &press_info;
+ st_sensors_power_enable(indio_dev);
+
err = st_sensors_check_device_support(indio_dev,
- ARRAY_SIZE(st_press_sensors), st_press_sensors);
+ ARRAY_SIZE(st_press_sensors),
+ st_press_sensors);
if (err < 0)
- goto st_press_common_probe_error;
+ return err;
pdata->num_data_channels = ST_PRESS_NUMBER_DATA_CHANNELS;
- pdata->multiread_bit = pdata->sensor->multi_read_bit;
- indio_dev->channels = pdata->sensor->ch;
- indio_dev->num_channels = ARRAY_SIZE(st_press_channels);
+ pdata->multiread_bit = pdata->sensor->multi_read_bit;
+ indio_dev->channels = pdata->sensor->ch;
+ indio_dev->num_channels = pdata->sensor->num_ch;
+
+ if (pdata->sensor->fs.addr != 0)
+ pdata->current_fullscale = (struct st_sensor_fullscale_avl *)
+ &pdata->sensor->fs.fs_avl[0];
- pdata->current_fullscale = (struct st_sensor_fullscale_avl *)
- &pdata->sensor->fs.fs_avl[0];
pdata->odr = pdata->sensor->odr.odr_avl[0].hz;
- err = st_sensors_init_sensor(indio_dev);
+ /* Some devices don't support a data ready pin. */
+ if (!plat_data && pdata->sensor->drdy_irq.addr)
+ plat_data =
+ (struct st_sensors_platform_data *)&default_press_pdata;
+
+ err = st_sensors_init_sensor(indio_dev, plat_data);
if (err < 0)
- goto st_press_common_probe_error;
+ return err;
- if (pdata->get_irq_data_ready(indio_dev) > 0) {
- err = st_press_allocate_ring(indio_dev);
- if (err < 0)
- goto st_press_common_probe_error;
+ err = st_press_allocate_ring(indio_dev);
+ if (err < 0)
+ return err;
+ if (irq > 0) {
err = st_sensors_allocate_trigger(indio_dev,
- ST_PRESS_TRIGGER_OPS);
+ ST_PRESS_TRIGGER_OPS);
if (err < 0)
goto st_press_probe_trigger_error;
}
@@ -243,15 +439,17 @@ int st_press_common_probe(struct iio_dev *indio_dev)
if (err)
goto st_press_device_register_error;
+ dev_info(&indio_dev->dev, "registered pressure sensor %s\n",
+ indio_dev->name);
+
return err;
st_press_device_register_error:
- if (pdata->get_irq_data_ready(indio_dev) > 0)
+ if (irq > 0)
st_sensors_deallocate_trigger(indio_dev);
st_press_probe_trigger_error:
- if (pdata->get_irq_data_ready(indio_dev) > 0)
- st_press_deallocate_ring(indio_dev);
-st_press_common_probe_error:
+ st_press_deallocate_ring(indio_dev);
+
return err;
}
EXPORT_SYMBOL(st_press_common_probe);
@@ -260,12 +458,13 @@ void st_press_common_remove(struct iio_dev *indio_dev)
{
struct st_sensor_data *pdata = iio_priv(indio_dev);
+ st_sensors_power_disable(indio_dev);
+
iio_device_unregister(indio_dev);
- if (pdata->get_irq_data_ready(indio_dev) > 0) {
+ if (pdata->get_irq_data_ready(indio_dev) > 0)
st_sensors_deallocate_trigger(indio_dev);
- st_press_deallocate_ring(indio_dev);
- }
- iio_device_free(indio_dev);
+
+ st_press_deallocate_ring(indio_dev);
}
EXPORT_SYMBOL(st_press_common_remove);
diff --git a/drivers/iio/pressure/st_pressure_i2c.c b/drivers/iio/pressure/st_pressure_i2c.c
index 7cebcc73bfb..3cd73e39b84 100644
--- a/drivers/iio/pressure/st_pressure_i2c.c
+++ b/drivers/iio/pressure/st_pressure_i2c.c
@@ -25,27 +25,20 @@ static int st_press_i2c_probe(struct i2c_client *client,
struct st_sensor_data *pdata;
int err;
- indio_dev = iio_device_alloc(sizeof(*pdata));
- if (indio_dev == NULL) {
- err = -ENOMEM;
- goto iio_device_alloc_error;
- }
+ indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*pdata));
+ if (!indio_dev)
+ return -ENOMEM;
pdata = iio_priv(indio_dev);
pdata->dev = &client->dev;
st_sensors_i2c_configure(indio_dev, client, pdata);
- err = st_press_common_probe(indio_dev);
+ err = st_press_common_probe(indio_dev, client->dev.platform_data);
if (err < 0)
- goto st_press_common_probe_error;
+ return err;
return 0;
-
-st_press_common_probe_error:
- iio_device_free(indio_dev);
-iio_device_alloc_error:
- return err;
}
static int st_press_i2c_remove(struct i2c_client *client)
@@ -56,6 +49,8 @@ static int st_press_i2c_remove(struct i2c_client *client)
}
static const struct i2c_device_id st_press_id_table[] = {
+ { LPS001WP_PRESS_DEV_NAME },
+ { LPS25H_PRESS_DEV_NAME },
{ LPS331AP_PRESS_DEV_NAME },
{},
};
diff --git a/drivers/iio/pressure/st_pressure_spi.c b/drivers/iio/pressure/st_pressure_spi.c
index 17a14907940..f45d430ec52 100644
--- a/drivers/iio/pressure/st_pressure_spi.c
+++ b/drivers/iio/pressure/st_pressure_spi.c
@@ -24,27 +24,20 @@ static int st_press_spi_probe(struct spi_device *spi)
struct st_sensor_data *pdata;
int err;
- indio_dev = iio_device_alloc(sizeof(*pdata));
- if (indio_dev == NULL) {
- err = -ENOMEM;
- goto iio_device_alloc_error;
- }
+ indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*pdata));
+ if (indio_dev == NULL)
+ return -ENOMEM;
pdata = iio_priv(indio_dev);
pdata->dev = &spi->dev;
st_sensors_spi_configure(indio_dev, spi, pdata);
- err = st_press_common_probe(indio_dev);
+ err = st_press_common_probe(indio_dev, spi->dev.platform_data);
if (err < 0)
- goto st_press_common_probe_error;
+ return err;
return 0;
-
-st_press_common_probe_error:
- iio_device_free(indio_dev);
-iio_device_alloc_error:
- return err;
}
static int st_press_spi_remove(struct spi_device *spi)
@@ -55,6 +48,8 @@ static int st_press_spi_remove(struct spi_device *spi)
}
static const struct spi_device_id st_press_id_table[] = {
+ { LPS001WP_PRESS_DEV_NAME },
+ { LPS25H_PRESS_DEV_NAME },
{ LPS331AP_PRESS_DEV_NAME },
{},
};
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 05:30:45 +0000