summaryrefslogtreecommitdiffstats
path: root/drivers/iio/pressure
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/iio/pressure')
-rw-r--r--drivers/iio/pressure/Kconfig12
-rw-r--r--drivers/iio/pressure/Makefile1
-rw-r--r--drivers/iio/pressure/bmp280-core.c130
-rw-r--r--drivers/iio/pressure/bmp280-i2c.c24
-rw-r--r--drivers/iio/pressure/bmp280-spi.c6
-rw-r--r--drivers/iio/pressure/bmp280.h1
-rw-r--r--drivers/iio/pressure/cros_ec_baro.c26
-rw-r--r--drivers/iio/pressure/dlhl60d.c375
-rw-r--r--drivers/iio/pressure/hp03.c6
-rw-r--r--drivers/iio/pressure/st_pressure.h3
-rw-r--r--drivers/iio/pressure/st_pressure_buffer.c39
-rw-r--r--drivers/iio/pressure/st_pressure_core.c33
-rw-r--r--drivers/iio/pressure/st_pressure_i2c.c41
-rw-r--r--drivers/iio/pressure/st_pressure_spi.c27
-rw-r--r--drivers/iio/pressure/zpa2326.c16
15 files changed, 547 insertions, 193 deletions
diff --git a/drivers/iio/pressure/Kconfig b/drivers/iio/pressure/Kconfig
index ba420e484787..9c2d9bf8f100 100644
--- a/drivers/iio/pressure/Kconfig
+++ b/drivers/iio/pressure/Kconfig
@@ -53,6 +53,18 @@ config IIO_CROS_EC_BARO
To compile this driver as a module, choose M here: the module
will be called cros_ec_baro.
+config DLHL60D
+ tristate "All Sensors DLHL60D and DLHL60G low voltage digital pressure sensors"
+ depends on I2C
+ select IIO_BUFFER
+ select IIO_TRIGGERED_BUFFER
+ help
+ Say yes here to build support for the All Sensors DLH series
+ pressure sensors driver.
+
+ To compile this driver as a module, choose M here: the module
+ will be called dlhl60d.
+
config DPS310
tristate "Infineon DPS310 pressure and temperature sensor"
depends on I2C
diff --git a/drivers/iio/pressure/Makefile b/drivers/iio/pressure/Makefile
index d8f5ace1f25d..5a79192d8cb5 100644
--- a/drivers/iio/pressure/Makefile
+++ b/drivers/iio/pressure/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_BMP280) += bmp280.o
bmp280-objs := bmp280-core.o bmp280-regmap.o
obj-$(CONFIG_BMP280_I2C) += bmp280-i2c.o
obj-$(CONFIG_BMP280_SPI) += bmp280-spi.o
+obj-$(CONFIG_DLHL60D) += dlhl60d.o
obj-$(CONFIG_DPS310) += dps310.o
obj-$(CONFIG_IIO_CROS_EC_BARO) += cros_ec_baro.o
obj-$(CONFIG_HID_SENSOR_PRESS) += hid-sensor-press.o
diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c
index 8d0f15f27dc5..29c209cc1108 100644
--- a/drivers/iio/pressure/bmp280-core.c
+++ b/drivers/iio/pressure/bmp280-core.c
@@ -74,6 +74,12 @@ struct bmp280_calib {
s8 H6;
};
+static const char *const bmp280_supply_names[] = {
+ "vddd", "vdda"
+};
+
+#define BMP280_NUM_SUPPLIES ARRAY_SIZE(bmp280_supply_names)
+
struct bmp280_data {
struct device *dev;
struct mutex lock;
@@ -85,8 +91,7 @@ struct bmp280_data {
struct bmp180_calib bmp180;
struct bmp280_calib bmp280;
} calib;
- struct regulator *vddd;
- struct regulator *vdda;
+ struct regulator_bulk_data supplies[BMP280_NUM_SUPPLIES];
unsigned int start_up_time; /* in microseconds */
/* log of base 2 of oversampling rate */
@@ -148,6 +153,8 @@ static int bmp280_read_calib(struct bmp280_data *data,
{
int ret;
unsigned int tmp;
+ __le16 l16;
+ __be16 b16;
struct device *dev = data->dev;
__le16 t_buf[BMP280_COMP_TEMP_REG_COUNT / 2];
__le16 p_buf[BMP280_COMP_PRESS_REG_COUNT / 2];
@@ -207,12 +214,12 @@ static int bmp280_read_calib(struct bmp280_data *data,
}
calib->H1 = tmp;
- ret = regmap_bulk_read(data->regmap, BMP280_REG_COMP_H2, &tmp, 2);
+ ret = regmap_bulk_read(data->regmap, BMP280_REG_COMP_H2, &l16, 2);
if (ret < 0) {
dev_err(dev, "failed to read H2 comp value\n");
return ret;
}
- calib->H2 = sign_extend32(le16_to_cpu(tmp), 15);
+ calib->H2 = sign_extend32(le16_to_cpu(l16), 15);
ret = regmap_read(data->regmap, BMP280_REG_COMP_H3, &tmp);
if (ret < 0) {
@@ -221,20 +228,20 @@ static int bmp280_read_calib(struct bmp280_data *data,
}
calib->H3 = tmp;
- ret = regmap_bulk_read(data->regmap, BMP280_REG_COMP_H4, &tmp, 2);
+ ret = regmap_bulk_read(data->regmap, BMP280_REG_COMP_H4, &b16, 2);
if (ret < 0) {
dev_err(dev, "failed to read H4 comp value\n");
return ret;
}
- calib->H4 = sign_extend32(((be16_to_cpu(tmp) >> 4) & 0xff0) |
- (be16_to_cpu(tmp) & 0xf), 11);
+ calib->H4 = sign_extend32(((be16_to_cpu(b16) >> 4) & 0xff0) |
+ (be16_to_cpu(b16) & 0xf), 11);
- ret = regmap_bulk_read(data->regmap, BMP280_REG_COMP_H5, &tmp, 2);
+ ret = regmap_bulk_read(data->regmap, BMP280_REG_COMP_H5, &l16, 2);
if (ret < 0) {
dev_err(dev, "failed to read H5 comp value\n");
return ret;
}
- calib->H5 = sign_extend32(((le16_to_cpu(tmp) >> 4) & 0xfff), 11);
+ calib->H5 = sign_extend32(((le16_to_cpu(l16) >> 4) & 0xfff), 11);
ret = regmap_read(data->regmap, BMP280_REG_COMP_H6, &tmp);
if (ret < 0) {
@@ -979,6 +986,22 @@ static int bmp085_fetch_eoc_irq(struct device *dev,
return 0;
}
+static void bmp280_pm_disable(void *data)
+{
+ struct device *dev = data;
+
+ pm_runtime_get_sync(dev);
+ pm_runtime_put_noidle(dev);
+ pm_runtime_disable(dev);
+}
+
+static void bmp280_regulators_disable(void *data)
+{
+ struct regulator_bulk_data *supplies = data;
+
+ regulator_bulk_disable(BMP280_NUM_SUPPLIES, supplies);
+}
+
int bmp280_common_probe(struct device *dev,
struct regmap *regmap,
unsigned int chip,
@@ -1033,27 +1056,28 @@ int bmp280_common_probe(struct device *dev,
}
/* Bring up regulators */
- data->vddd = devm_regulator_get(dev, "vddd");
- if (IS_ERR(data->vddd)) {
- dev_err(dev, "failed to get VDDD regulator\n");
- return PTR_ERR(data->vddd);
- }
- ret = regulator_enable(data->vddd);
+ regulator_bulk_set_supply_names(data->supplies,
+ bmp280_supply_names,
+ BMP280_NUM_SUPPLIES);
+
+ ret = devm_regulator_bulk_get(dev,
+ BMP280_NUM_SUPPLIES, data->supplies);
if (ret) {
- dev_err(dev, "failed to enable VDDD regulator\n");
+ dev_err(dev, "failed to get regulators\n");
return ret;
}
- data->vdda = devm_regulator_get(dev, "vdda");
- if (IS_ERR(data->vdda)) {
- dev_err(dev, "failed to get VDDA regulator\n");
- ret = PTR_ERR(data->vdda);
- goto out_disable_vddd;
- }
- ret = regulator_enable(data->vdda);
+
+ ret = regulator_bulk_enable(BMP280_NUM_SUPPLIES, data->supplies);
if (ret) {
- dev_err(dev, "failed to enable VDDA regulator\n");
- goto out_disable_vddd;
+ dev_err(dev, "failed to enable regulators\n");
+ return ret;
}
+
+ ret = devm_add_action_or_reset(dev, bmp280_regulators_disable,
+ data->supplies);
+ if (ret)
+ return ret;
+
/* Wait to make sure we started up properly */
usleep_range(data->start_up_time, data->start_up_time + 100);
@@ -1068,17 +1092,16 @@ int bmp280_common_probe(struct device *dev,
data->regmap = regmap;
ret = regmap_read(regmap, BMP280_REG_ID, &chip_id);
if (ret < 0)
- goto out_disable_vdda;
+ return ret;
if (chip_id != chip) {
dev_err(dev, "bad chip id: expected %x got %x\n",
chip, chip_id);
- ret = -EINVAL;
- goto out_disable_vdda;
+ return -EINVAL;
}
ret = data->chip_info->chip_config(data);
if (ret < 0)
- goto out_disable_vdda;
+ return ret;
dev_set_drvdata(dev, indio_dev);
@@ -1092,14 +1115,14 @@ int bmp280_common_probe(struct device *dev,
if (ret < 0) {
dev_err(data->dev,
"failed to read calibration coefficients\n");
- goto out_disable_vdda;
+ return ret;
}
} else if (chip_id == BMP280_CHIP_ID || chip_id == BME280_CHIP_ID) {
ret = bmp280_read_calib(data, &data->calib.bmp280, chip_id);
if (ret < 0) {
dev_err(data->dev,
"failed to read calibration coefficients\n");
- goto out_disable_vdda;
+ return ret;
}
}
@@ -1111,7 +1134,7 @@ int bmp280_common_probe(struct device *dev,
if (irq > 0 || (chip_id == BMP180_CHIP_ID)) {
ret = bmp085_fetch_eoc_irq(dev, name, irq, data);
if (ret)
- goto out_disable_vdda;
+ return ret;
}
/* Enable runtime PM */
@@ -1126,51 +1149,21 @@ int bmp280_common_probe(struct device *dev,
pm_runtime_use_autosuspend(dev);
pm_runtime_put(dev);
- ret = iio_device_register(indio_dev);
+ ret = devm_add_action_or_reset(dev, bmp280_pm_disable, dev);
if (ret)
- goto out_runtime_pm_disable;
-
-
- return 0;
+ return ret;
-out_runtime_pm_disable:
- pm_runtime_get_sync(data->dev);
- pm_runtime_put_noidle(data->dev);
- pm_runtime_disable(data->dev);
-out_disable_vdda:
- regulator_disable(data->vdda);
-out_disable_vddd:
- regulator_disable(data->vddd);
- return ret;
+ return devm_iio_device_register(dev, indio_dev);
}
EXPORT_SYMBOL(bmp280_common_probe);
-int bmp280_common_remove(struct device *dev)
-{
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct bmp280_data *data = iio_priv(indio_dev);
-
- iio_device_unregister(indio_dev);
- pm_runtime_get_sync(data->dev);
- pm_runtime_put_noidle(data->dev);
- pm_runtime_disable(data->dev);
- regulator_disable(data->vdda);
- regulator_disable(data->vddd);
- return 0;
-}
-EXPORT_SYMBOL(bmp280_common_remove);
-
#ifdef CONFIG_PM
static int bmp280_runtime_suspend(struct device *dev)
{
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct bmp280_data *data = iio_priv(indio_dev);
- int ret;
- ret = regulator_disable(data->vdda);
- if (ret)
- return ret;
- return regulator_disable(data->vddd);
+ return regulator_bulk_disable(BMP280_NUM_SUPPLIES, data->supplies);
}
static int bmp280_runtime_resume(struct device *dev)
@@ -1179,10 +1172,7 @@ static int bmp280_runtime_resume(struct device *dev)
struct bmp280_data *data = iio_priv(indio_dev);
int ret;
- ret = regulator_enable(data->vddd);
- if (ret)
- return ret;
- ret = regulator_enable(data->vdda);
+ ret = regulator_bulk_enable(BMP280_NUM_SUPPLIES, data->supplies);
if (ret)
return ret;
usleep_range(data->start_up_time, data->start_up_time + 100);
diff --git a/drivers/iio/pressure/bmp280-i2c.c b/drivers/iio/pressure/bmp280-i2c.c
index acd9a3784fb4..8b03ea15c0d0 100644
--- a/drivers/iio/pressure/bmp280-i2c.c
+++ b/drivers/iio/pressure/bmp280-i2c.c
@@ -1,8 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
#include <linux/module.h>
#include <linux/i2c.h>
-#include <linux/acpi.h>
-#include <linux/of.h>
#include <linux/regmap.h>
#include "bmp280.h"
@@ -38,21 +36,6 @@ static int bmp280_i2c_probe(struct i2c_client *client,
client->irq);
}
-static int bmp280_i2c_remove(struct i2c_client *client)
-{
- return bmp280_common_remove(&client->dev);
-}
-
-static const struct acpi_device_id bmp280_acpi_i2c_match[] = {
- {"BMP0280", BMP280_CHIP_ID },
- {"BMP0180", BMP180_CHIP_ID },
- {"BMP0085", BMP180_CHIP_ID },
- {"BME0280", BME280_CHIP_ID },
- { },
-};
-MODULE_DEVICE_TABLE(acpi, bmp280_acpi_i2c_match);
-
-#ifdef CONFIG_OF
static const struct of_device_id bmp280_of_i2c_match[] = {
{ .compatible = "bosch,bme280", .data = (void *)BME280_CHIP_ID },
{ .compatible = "bosch,bmp280", .data = (void *)BMP280_CHIP_ID },
@@ -61,9 +44,6 @@ static const struct of_device_id bmp280_of_i2c_match[] = {
{ },
};
MODULE_DEVICE_TABLE(of, bmp280_of_i2c_match);
-#else
-#define bmp280_of_i2c_match NULL
-#endif
static const struct i2c_device_id bmp280_i2c_id[] = {
{"bmp280", BMP280_CHIP_ID },
@@ -77,12 +57,10 @@ MODULE_DEVICE_TABLE(i2c, bmp280_i2c_id);
static struct i2c_driver bmp280_i2c_driver = {
.driver = {
.name = "bmp280",
- .acpi_match_table = ACPI_PTR(bmp280_acpi_i2c_match),
- .of_match_table = of_match_ptr(bmp280_of_i2c_match),
+ .of_match_table = bmp280_of_i2c_match,
.pm = &bmp280_dev_pm_ops,
},
.probe = bmp280_i2c_probe,
- .remove = bmp280_i2c_remove,
.id_table = bmp280_i2c_id,
};
module_i2c_driver(bmp280_i2c_driver);
diff --git a/drivers/iio/pressure/bmp280-spi.c b/drivers/iio/pressure/bmp280-spi.c
index 9d57b7a3b134..625b86878ad8 100644
--- a/drivers/iio/pressure/bmp280-spi.c
+++ b/drivers/iio/pressure/bmp280-spi.c
@@ -86,11 +86,6 @@ static int bmp280_spi_probe(struct spi_device *spi)
spi->irq);
}
-static int bmp280_spi_remove(struct spi_device *spi)
-{
- return bmp280_common_remove(&spi->dev);
-}
-
static const struct of_device_id bmp280_of_spi_match[] = {
{ .compatible = "bosch,bmp085", },
{ .compatible = "bosch,bmp180", },
@@ -118,7 +113,6 @@ static struct spi_driver bmp280_spi_driver = {
},
.id_table = bmp280_spi_id,
.probe = bmp280_spi_probe,
- .remove = bmp280_spi_remove,
};
module_spi_driver(bmp280_spi_driver);
diff --git a/drivers/iio/pressure/bmp280.h b/drivers/iio/pressure/bmp280.h
index eda50ef65706..57ba0e85db91 100644
--- a/drivers/iio/pressure/bmp280.h
+++ b/drivers/iio/pressure/bmp280.h
@@ -112,7 +112,6 @@ int bmp280_common_probe(struct device *dev,
unsigned int chip,
const char *name,
int irq);
-int bmp280_common_remove(struct device *dev);
/* PM ops */
extern const struct dev_pm_ops bmp280_dev_pm_ops;
diff --git a/drivers/iio/pressure/cros_ec_baro.c b/drivers/iio/pressure/cros_ec_baro.c
index 034ce98d6e97..b521bebd551c 100644
--- a/drivers/iio/pressure/cros_ec_baro.c
+++ b/drivers/iio/pressure/cros_ec_baro.c
@@ -14,10 +14,10 @@
#include <linux/iio/triggered_buffer.h>
#include <linux/iio/trigger_consumer.h>
#include <linux/kernel.h>
-#include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
#include <linux/module.h>
#include <linux/slab.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
#include <linux/platform_device.h>
/*
@@ -39,26 +39,29 @@ static int cros_ec_baro_read(struct iio_dev *indio_dev,
{
struct cros_ec_baro_state *st = iio_priv(indio_dev);
u16 data = 0;
- int ret = IIO_VAL_INT;
+ int ret;
int idx = chan->scan_index;
mutex_lock(&st->core.cmd_lock);
switch (mask) {
case IIO_CHAN_INFO_RAW:
- if (cros_ec_sensors_read_cmd(indio_dev, 1 << idx,
- (s16 *)&data) < 0)
- ret = -EIO;
+ ret = cros_ec_sensors_read_cmd(indio_dev, 1 << idx,
+ (s16 *)&data);
+ if (ret)
+ break;
+
*val = data;
+ ret = IIO_VAL_INT;
break;
case IIO_CHAN_INFO_SCALE:
st->core.param.cmd = MOTIONSENSE_CMD_SENSOR_RANGE;
st->core.param.sensor_range.data = EC_MOTION_SENSE_NO_VALUE;
- if (cros_ec_motion_send_host_cmd(&st->core, 0)) {
- ret = -EIO;
+ ret = cros_ec_motion_send_host_cmd(&st->core, 0);
+ if (ret)
break;
- }
+
*val = st->core.resp->sensor_range.ret;
/* scale * in_pressure_raw --> kPa */
@@ -110,6 +113,7 @@ static int cros_ec_baro_write(struct iio_dev *indio_dev,
static const struct iio_info cros_ec_baro_info = {
.read_raw = &cros_ec_baro_read,
.write_raw = &cros_ec_baro_write,
+ .read_avail = &cros_ec_sensors_core_read_avail,
};
static int cros_ec_baro_probe(struct platform_device *pdev)
@@ -145,6 +149,8 @@ static int cros_ec_baro_probe(struct platform_device *pdev)
BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_SAMP_FREQ) |
BIT(IIO_CHAN_INFO_FREQUENCY);
+ channel->info_mask_shared_by_all_available =
+ BIT(IIO_CHAN_INFO_SAMP_FREQ);
channel->scan_type.realbits = CROS_EC_SENSOR_BITS;
channel->scan_type.storagebits = CROS_EC_SENSOR_BITS;
channel->scan_type.shift = 0;
@@ -152,8 +158,6 @@ static int cros_ec_baro_probe(struct platform_device *pdev)
channel->ext_info = cros_ec_sensors_ext_info;
channel->scan_type.sign = 'u';
- state->core.calib[0] = 0;
-
/* Sensor specific */
switch (state->core.type) {
case MOTIONSENSE_TYPE_BARO:
diff --git a/drivers/iio/pressure/dlhl60d.c b/drivers/iio/pressure/dlhl60d.c
new file mode 100644
index 000000000000..b8c99e7bd6cf
--- /dev/null
+++ b/drivers/iio/pressure/dlhl60d.c
@@ -0,0 +1,375 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * All Sensors DLH series low voltage digital pressure sensors
+ *
+ * Copyright (c) 2019 AVL DiTEST GmbH
+ * Tomislav Denis <tomislav.denis@avl.com>
+ *
+ * Datasheet: http://www.allsensors.com/cad/DS-0355_Rev_B.PDF
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+#include <asm/unaligned.h>
+
+/* Commands */
+#define DLH_START_SINGLE 0xAA
+
+/* Status bits */
+#define DLH_STATUS_OK 0x40
+
+/* DLH data format */
+#define DLH_NUM_READ_BYTES 7
+#define DLH_NUM_DATA_BYTES 3
+#define DLH_NUM_PR_BITS 24
+#define DLH_NUM_TEMP_BITS 24
+
+/* DLH timings */
+#define DLH_SINGLE_DUT_MS 5
+
+enum dhl_ids {
+ dlhl60d,
+ dlhl60g,
+};
+
+struct dlh_info {
+ u8 osdig; /* digital offset factor */
+ unsigned int fss; /* full scale span (inch H2O) */
+};
+
+struct dlh_state {
+ struct i2c_client *client;
+ struct dlh_info info;
+ bool use_interrupt;
+ struct completion completion;
+ u8 rx_buf[DLH_NUM_READ_BYTES] ____cacheline_aligned;
+};
+
+static struct dlh_info dlh_info_tbl[] = {
+ [dlhl60d] = {
+ .osdig = 2,
+ .fss = 120,
+ },
+ [dlhl60g] = {
+ .osdig = 10,
+ .fss = 60,
+ },
+};
+
+
+static int dlh_cmd_start_single(struct dlh_state *st)
+{
+ int ret;
+
+ ret = i2c_smbus_write_byte(st->client, DLH_START_SINGLE);
+ if (ret)
+ dev_err(&st->client->dev,
+ "%s: I2C write byte failed\n", __func__);
+
+ return ret;
+}
+
+static int dlh_cmd_read_data(struct dlh_state *st)
+{
+ int ret;
+
+ ret = i2c_master_recv(st->client, st->rx_buf, DLH_NUM_READ_BYTES);
+ if (ret < 0) {
+ dev_err(&st->client->dev,
+ "%s: I2C read block failed\n", __func__);
+ return ret;
+ }
+
+ if (st->rx_buf[0] != DLH_STATUS_OK) {
+ dev_err(&st->client->dev,
+ "%s: invalid status 0x%02x\n", __func__, st->rx_buf[0]);
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+static int dlh_start_capture_and_read(struct dlh_state *st)
+{
+ int ret;
+
+ if (st->use_interrupt)
+ reinit_completion(&st->completion);
+
+ ret = dlh_cmd_start_single(st);
+ if (ret)
+ return ret;
+
+ if (st->use_interrupt) {
+ ret = wait_for_completion_timeout(&st->completion,
+ msecs_to_jiffies(DLH_SINGLE_DUT_MS));
+ if (!ret) {
+ dev_err(&st->client->dev,
+ "%s: conversion timed out\n", __func__);
+ return -ETIMEDOUT;
+ }
+ } else {
+ mdelay(DLH_SINGLE_DUT_MS);
+ }
+
+ return dlh_cmd_read_data(st);
+}
+
+static int dlh_read_direct(struct dlh_state *st,
+ unsigned int *pressure, unsigned int *temperature)
+{
+ int ret;
+
+ ret = dlh_start_capture_and_read(st);
+ if (ret)
+ return ret;
+
+ *pressure = get_unaligned_be32(&st->rx_buf[1]) >> 8;
+ *temperature = get_unaligned_be32(&st->rx_buf[3]) &
+ GENMASK(DLH_NUM_TEMP_BITS - 1, 0);
+
+ return 0;
+}
+
+static int dlh_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *channel, int *value,
+ int *value2, long mask)
+{
+ struct dlh_state *st = iio_priv(indio_dev);
+ unsigned int pressure, temperature;
+ int ret;
+ s64 tmp;
+ s32 rem;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_RAW:
+ ret = iio_device_claim_direct_mode(indio_dev);
+ if (ret)
+ return ret;
+
+ ret = dlh_read_direct(st, &pressure, &temperature);
+ iio_device_release_direct_mode(indio_dev);
+ if (ret)
+ return ret;
+
+ switch (channel->type) {
+ case IIO_PRESSURE:
+ *value = pressure;
+ return IIO_VAL_INT;
+
+ case IIO_TEMP:
+ *value = temperature;
+ return IIO_VAL_INT;
+
+ default:
+ return -EINVAL;
+ }
+ case IIO_CHAN_INFO_SCALE:
+ switch (channel->type) {
+ case IIO_PRESSURE:
+ tmp = div_s64(125LL * st->info.fss * 24909 * 100,
+ 1 << DLH_NUM_PR_BITS);
+ tmp = div_s64_rem(tmp, 1000000000LL, &rem);
+ *value = tmp;
+ *value2 = rem;
+ return IIO_VAL_INT_PLUS_NANO;
+
+ case IIO_TEMP:
+ *value = 125 * 1000;
+ *value2 = DLH_NUM_TEMP_BITS;
+ return IIO_VAL_FRACTIONAL_LOG2;
+
+ default:
+ return -EINVAL;
+ }
+ case IIO_CHAN_INFO_OFFSET:
+ switch (channel->type) {
+ case IIO_PRESSURE:
+ *value = -125 * st->info.fss * 24909;
+ *value2 = 100 * st->info.osdig * 100000;
+ return IIO_VAL_FRACTIONAL;
+
+ case IIO_TEMP:
+ *value = -40 * 1000;
+ return IIO_VAL_INT;
+
+ default:
+ return -EINVAL;
+ }
+ }
+
+ return -EINVAL;
+}
+
+static const struct iio_info dlh_info = {
+ .read_raw = dlh_read_raw,
+};
+
+static const struct iio_chan_spec dlh_channels[] = {
+ {
+ .type = IIO_PRESSURE,
+ .indexed = 1,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ .info_mask_shared_by_type =
+ BIT(IIO_CHAN_INFO_SCALE) |
+ BIT(IIO_CHAN_INFO_OFFSET),
+ .scan_index = 0,
+ .scan_type = {
+ .sign = 'u',
+ .realbits = DLH_NUM_PR_BITS,
+ .storagebits = 32,
+ .shift = 8,
+ .endianness = IIO_BE,
+ },
+ }, {
+ .type = IIO_TEMP,
+ .indexed = 1,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ .info_mask_shared_by_type =
+ BIT(IIO_CHAN_INFO_SCALE) |
+ BIT(IIO_CHAN_INFO_OFFSET),
+ .scan_index = 1,
+ .scan_type = {
+ .sign = 'u',
+ .realbits = DLH_NUM_TEMP_BITS,
+ .storagebits = 32,
+ .shift = 8,
+ .endianness = IIO_BE,
+ },
+ }
+};
+
+static irqreturn_t dlh_trigger_handler(int irq, void *private)
+{
+ struct iio_poll_func *pf = private;
+ struct iio_dev *indio_dev = pf->indio_dev;
+ struct dlh_state *st = iio_priv(indio_dev);
+ int ret;
+ unsigned int chn, i = 0;
+ __be32 tmp_buf[2];
+
+ ret = dlh_start_capture_and_read(st);
+ if (ret)
+ goto out;
+
+ for_each_set_bit(chn, indio_dev->active_scan_mask,
+ indio_dev->masklength) {
+ memcpy(tmp_buf + i,
+ &st->rx_buf[1] + chn * DLH_NUM_DATA_BYTES,
+ DLH_NUM_DATA_BYTES);
+ i++;
+ }
+
+ iio_push_to_buffers(indio_dev, tmp_buf);
+
+out:
+ iio_trigger_notify_done(indio_dev->trig);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t dlh_interrupt(int irq, void *private)
+{
+ struct iio_dev *indio_dev = private;
+ struct dlh_state *st = iio_priv(indio_dev);
+
+ complete(&st->completion);
+
+ return IRQ_HANDLED;
+};
+
+static int dlh_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct dlh_state *st;
+ struct iio_dev *indio_dev;
+ int ret;
+
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_I2C | I2C_FUNC_SMBUS_WRITE_BYTE)) {
+ dev_err(&client->dev,
+ "adapter doesn't support required i2c functionality\n");
+ return -EOPNOTSUPP;
+ }
+
+ indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*st));
+ if (!indio_dev) {
+ dev_err(&client->dev, "failed to allocate iio device\n");
+ return -ENOMEM;
+ }
+
+ i2c_set_clientdata(client, indio_dev);
+
+ st = iio_priv(indio_dev);
+ st->info = dlh_info_tbl[id->driver_data];
+ st->client = client;
+ st->use_interrupt = false;
+
+ indio_dev->name = id->name;
+ indio_dev->dev.parent = &client->dev;
+ indio_dev->dev.of_node = client->dev.of_node;
+ indio_dev->info = &dlh_info;
+ indio_dev->modes = INDIO_DIRECT_MODE;
+ indio_dev->channels = dlh_channels;
+ indio_dev->num_channels = ARRAY_SIZE(dlh_channels);
+
+ if (client->irq > 0) {
+ ret = devm_request_threaded_irq(&client->dev, client->irq,
+ dlh_interrupt, NULL,
+ IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+ id->name, indio_dev);
+ if (ret) {
+ dev_err(&client->dev, "failed to allocate threaded irq");
+ return ret;
+ }
+
+ st->use_interrupt = true;
+ init_completion(&st->completion);
+ }
+
+ ret = devm_iio_triggered_buffer_setup(&client->dev, indio_dev,
+ NULL, &dlh_trigger_handler, NULL);
+ if (ret) {
+ dev_err(&client->dev, "failed to setup iio buffer\n");
+ return ret;
+ }
+
+ ret = devm_iio_device_register(&client->dev, indio_dev);
+ if (ret)
+ dev_err(&client->dev, "failed to register iio device\n");
+
+ return ret;
+}
+
+static const struct of_device_id dlh_of_match[] = {
+ { .compatible = "asc,dlhl60d" },
+ { .compatible = "asc,dlhl60g" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, dlh_of_match);
+
+static const struct i2c_device_id dlh_id[] = {
+ { "dlhl60d", dlhl60d },
+ { "dlhl60g", dlhl60g },
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, dlh_id);
+
+static struct i2c_driver dlh_driver = {
+ .driver = {
+ .name = "dlhl60d",
+ .of_match_table = dlh_of_match,
+ },
+ .probe = dlh_probe,
+ .id_table = dlh_id,
+};
+module_i2c_driver(dlh_driver);
+
+MODULE_AUTHOR("Tomislav Denis <tomislav.denis@avl.com>");
+MODULE_DESCRIPTION("Driver for All Sensors DLH series pressure sensors");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/pressure/hp03.c b/drivers/iio/pressure/hp03.c
index f00102577fd5..026ba15ef68f 100644
--- a/drivers/iio/pressure/hp03.c
+++ b/drivers/iio/pressure/hp03.c
@@ -243,10 +243,10 @@ static int hp03_probe(struct i2c_client *client,
* which has it's dedicated I2C address and contains
* the calibration constants for the sensor.
*/
- priv->eeprom_client = i2c_new_dummy(client->adapter, HP03_EEPROM_ADDR);
- if (!priv->eeprom_client) {
+ priv->eeprom_client = i2c_new_dummy_device(client->adapter, HP03_EEPROM_ADDR);
+ if (IS_ERR(priv->eeprom_client)) {
dev_err(dev, "New EEPROM I2C device failed\n");
- return -ENODEV;
+ return PTR_ERR(priv->eeprom_client);
}
priv->eeprom_regmap = regmap_init_i2c(priv->eeprom_client,
diff --git a/drivers/iio/pressure/st_pressure.h b/drivers/iio/pressure/st_pressure.h
index 6a720cfb5686..5c746ff6087e 100644
--- a/drivers/iio/pressure/st_pressure.h
+++ b/drivers/iio/pressure/st_pressure.h
@@ -37,10 +37,11 @@ enum st_press_type {
* 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 = {
+static __maybe_unused const struct st_sensors_platform_data default_press_pdata = {
.drdy_int_pin = 1,
};
+const struct st_sensor_settings *st_press_get_settings(const char *name);
int st_press_common_probe(struct iio_dev *indio_dev);
void st_press_common_remove(struct iio_dev *indio_dev);
diff --git a/drivers/iio/pressure/st_pressure_buffer.c b/drivers/iio/pressure/st_pressure_buffer.c
index 4566e08a64a1..418dbf9e6e1e 100644
--- a/drivers/iio/pressure/st_pressure_buffer.c
+++ b/drivers/iio/pressure/st_pressure_buffer.c
@@ -29,52 +29,39 @@ int st_press_trig_set_state(struct iio_trigger *trig, bool state)
return st_sensors_set_dataready_irq(indio_dev, state);
}
-static int st_press_buffer_preenable(struct iio_dev *indio_dev)
-{
- return st_sensors_set_enable(indio_dev, true);
-}
-
static int st_press_buffer_postenable(struct iio_dev *indio_dev)
{
int err;
- struct st_sensor_data *press_data = iio_priv(indio_dev);
-
- press_data->buffer_data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
- if (press_data->buffer_data == NULL) {
- err = -ENOMEM;
- goto allocate_memory_error;
- }
err = iio_triggered_buffer_postenable(indio_dev);
if (err < 0)
- goto st_press_buffer_postenable_error;
+ return err;
- return err;
+ err = st_sensors_set_enable(indio_dev, true);
+ if (err < 0)
+ goto st_press_buffer_predisable;
-st_press_buffer_postenable_error:
- kfree(press_data->buffer_data);
-allocate_memory_error:
+ return 0;
+
+st_press_buffer_predisable:
+ iio_triggered_buffer_predisable(indio_dev);
return err;
}
static int st_press_buffer_predisable(struct iio_dev *indio_dev)
{
- int err;
- struct st_sensor_data *press_data = iio_priv(indio_dev);
-
- err = iio_triggered_buffer_predisable(indio_dev);
- if (err < 0)
- goto st_press_buffer_predisable_error;
+ int err, err2;
err = st_sensors_set_enable(indio_dev, false);
-st_press_buffer_predisable_error:
- kfree(press_data->buffer_data);
+ err2 = iio_triggered_buffer_predisable(indio_dev);
+ if (!err)
+ err = err2;
+
return err;
}
static const struct iio_buffer_setup_ops st_press_buffer_setup_ops = {
- .preenable = &st_press_buffer_preenable,
.postenable = &st_press_buffer_postenable,
.predisable = &st_press_buffer_predisable,
};
diff --git a/drivers/iio/pressure/st_pressure_core.c b/drivers/iio/pressure/st_pressure_core.c
index b960e76f7dfd..bd972cec4830 100644
--- a/drivers/iio/pressure/st_pressure_core.c
+++ b/drivers/iio/pressure/st_pressure_core.c
@@ -12,10 +12,8 @@
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/types.h>
-#include <linux/mutex.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
-#include <linux/gpio.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <linux/iio/iio.h>
@@ -664,25 +662,39 @@ static const struct iio_trigger_ops st_press_trigger_ops = {
#define ST_PRESS_TRIGGER_OPS NULL
#endif
+/*
+ * st_press_get_settings() - get sensor settings from device name
+ * @name: device name buffer reference.
+ *
+ * Return: valid reference on success, NULL otherwise.
+ */
+const struct st_sensor_settings *st_press_get_settings(const char *name)
+{
+ int index = st_sensors_get_settings_index(name,
+ st_press_sensors_settings,
+ ARRAY_SIZE(st_press_sensors_settings));
+ if (index < 0)
+ return NULL;
+
+ return &st_press_sensors_settings[index];
+}
+EXPORT_SYMBOL(st_press_get_settings);
+
int st_press_common_probe(struct iio_dev *indio_dev)
{
struct st_sensor_data *press_data = iio_priv(indio_dev);
struct st_sensors_platform_data *pdata =
(struct st_sensors_platform_data *)press_data->dev->platform_data;
- int irq = press_data->get_irq_data_ready(indio_dev);
int err;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->info = &press_info;
- mutex_init(&press_data->tb.buf_lock);
err = st_sensors_power_enable(indio_dev);
if (err)
return err;
- err = st_sensors_check_device_support(indio_dev,
- ARRAY_SIZE(st_press_sensors_settings),
- st_press_sensors_settings);
+ err = st_sensors_verify_id(indio_dev);
if (err < 0)
goto st_press_power_off;
@@ -693,7 +705,6 @@ int st_press_common_probe(struct iio_dev *indio_dev)
* element.
*/
press_data->num_data_channels = press_data->sensor_settings->num_ch - 1;
- press_data->multiread_bit = press_data->sensor_settings->multi_read_bit;
indio_dev->channels = press_data->sensor_settings->ch;
indio_dev->num_channels = press_data->sensor_settings->num_ch;
@@ -716,7 +727,7 @@ int st_press_common_probe(struct iio_dev *indio_dev)
if (err < 0)
goto st_press_power_off;
- if (irq > 0) {
+ if (press_data->irq > 0) {
err = st_sensors_allocate_trigger(indio_dev,
ST_PRESS_TRIGGER_OPS);
if (err < 0)
@@ -733,7 +744,7 @@ int st_press_common_probe(struct iio_dev *indio_dev)
return err;
st_press_device_register_error:
- if (irq > 0)
+ if (press_data->irq > 0)
st_sensors_deallocate_trigger(indio_dev);
st_press_probe_trigger_error:
st_press_deallocate_ring(indio_dev);
@@ -751,7 +762,7 @@ void st_press_common_remove(struct iio_dev *indio_dev)
st_sensors_power_disable(indio_dev);
iio_device_unregister(indio_dev);
- if (press_data->get_irq_data_ready(indio_dev) > 0)
+ if (press_data->irq > 0)
st_sensors_deallocate_trigger(indio_dev);
st_press_deallocate_ring(indio_dev);
diff --git a/drivers/iio/pressure/st_pressure_i2c.c b/drivers/iio/pressure/st_pressure_i2c.c
index b7d9ba706abc..09c6903f99b8 100644
--- a/drivers/iio/pressure/st_pressure_i2c.c
+++ b/drivers/iio/pressure/st_pressure_i2c.c
@@ -10,7 +10,6 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
-#include <linux/acpi.h>
#include <linux/i2c.h>
#include <linux/iio/iio.h>
@@ -18,7 +17,6 @@
#include <linux/iio/common/st_sensors_i2c.h>
#include "st_pressure.h"
-#ifdef CONFIG_OF
static const struct of_device_id st_press_of_match[] = {
{
.compatible = "st,lps001wp-press",
@@ -51,9 +49,6 @@ static const struct of_device_id st_press_of_match[] = {
{},
};
MODULE_DEVICE_TABLE(of, st_press_of_match);
-#else
-#define st_press_of_match NULL
-#endif
#ifdef CONFIG_ACPI
static const struct acpi_device_id st_press_acpi_match[] = {
@@ -61,8 +56,6 @@ static const struct acpi_device_id st_press_acpi_match[] = {
{ },
};
MODULE_DEVICE_TABLE(acpi, st_press_acpi_match);
-#else
-#define st_press_acpi_match NULL
#endif
static const struct i2c_device_id st_press_id_table[] = {
@@ -78,32 +71,32 @@ static const struct i2c_device_id st_press_id_table[] = {
MODULE_DEVICE_TABLE(i2c, st_press_id_table);
static int st_press_i2c_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+ const struct i2c_device_id *id)
{
- struct iio_dev *indio_dev;
+ const struct st_sensor_settings *settings;
struct st_sensor_data *press_data;
+ struct iio_dev *indio_dev;
int ret;
+ st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name));
+
+ settings = st_press_get_settings(client->name);
+ if (!settings) {
+ dev_err(&client->dev, "device name %s not recognized.\n",
+ client->name);
+ return -ENODEV;
+ }
+
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*press_data));
if (!indio_dev)
return -ENOMEM;
press_data = iio_priv(indio_dev);
+ press_data->sensor_settings = (struct st_sensor_settings *)settings;
- if (client->dev.of_node) {
- st_sensors_of_name_probe(&client->dev, st_press_of_match,
- client->name, sizeof(client->name));
- } else if (ACPI_HANDLE(&client->dev)) {
- ret = st_sensors_match_acpi_device(&client->dev);
- if ((ret < 0) || (ret >= ST_PRESS_MAX))
- return -ENODEV;
-
- strlcpy(client->name, st_press_id_table[ret].name,
- sizeof(client->name));
- } else if (!id)
- return -ENODEV;
-
- st_sensors_i2c_configure(indio_dev, client, press_data);
+ ret = st_sensors_i2c_configure(indio_dev, client);
+ if (ret < 0)
+ return ret;
ret = st_press_common_probe(indio_dev);
if (ret < 0)
@@ -122,7 +115,7 @@ static int st_press_i2c_remove(struct i2c_client *client)
static struct i2c_driver st_press_driver = {
.driver = {
.name = "st-press-i2c",
- .of_match_table = of_match_ptr(st_press_of_match),
+ .of_match_table = st_press_of_match,
.acpi_match_table = ACPI_PTR(st_press_acpi_match),
},
.probe = st_press_i2c_probe,
diff --git a/drivers/iio/pressure/st_pressure_spi.c b/drivers/iio/pressure/st_pressure_spi.c
index ef61401c41d3..b5ee3ec2764f 100644
--- a/drivers/iio/pressure/st_pressure_spi.c
+++ b/drivers/iio/pressure/st_pressure_spi.c
@@ -17,7 +17,6 @@
#include <linux/iio/common/st_sensors_spi.h>
#include "st_pressure.h"
-#ifdef CONFIG_OF
/*
* For new single-chip sensors use <device_name> as compatible string.
* For old single-chip devices keep <device_name>-press to maintain
@@ -55,25 +54,33 @@ static const struct of_device_id st_press_of_match[] = {
{},
};
MODULE_DEVICE_TABLE(of, st_press_of_match);
-#else
-#define st_press_of_match NULL
-#endif
static int st_press_spi_probe(struct spi_device *spi)
{
- struct iio_dev *indio_dev;
+ const struct st_sensor_settings *settings;
struct st_sensor_data *press_data;
+ struct iio_dev *indio_dev;
int err;
+ st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias));
+
+ settings = st_press_get_settings(spi->modalias);
+ if (!settings) {
+ dev_err(&spi->dev, "device name %s not recognized.\n",
+ spi->modalias);
+ return -ENODEV;
+ }
+
indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*press_data));
- if (indio_dev == NULL)
+ if (!indio_dev)
return -ENOMEM;
press_data = iio_priv(indio_dev);
+ press_data->sensor_settings = (struct st_sensor_settings *)settings;
- st_sensors_of_name_probe(&spi->dev, st_press_of_match,
- spi->modalias, sizeof(spi->modalias));
- st_sensors_spi_configure(indio_dev, spi, press_data);
+ err = st_sensors_spi_configure(indio_dev, spi);
+ if (err < 0)
+ return err;
err = st_press_common_probe(indio_dev);
if (err < 0)
@@ -104,7 +111,7 @@ MODULE_DEVICE_TABLE(spi, st_press_id_table);
static struct spi_driver st_press_driver = {
.driver = {
.name = "st-press-spi",
- .of_match_table = of_match_ptr(st_press_of_match),
+ .of_match_table = st_press_of_match,
},
.probe = st_press_spi_probe,
.remove = st_press_spi_remove,
diff --git a/drivers/iio/pressure/zpa2326.c b/drivers/iio/pressure/zpa2326.c
index 9d0d07930236..99dfe33ee402 100644
--- a/drivers/iio/pressure/zpa2326.c
+++ b/drivers/iio/pressure/zpa2326.c
@@ -1243,6 +1243,11 @@ static int zpa2326_postenable_buffer(struct iio_dev *indio_dev)
const struct zpa2326_private *priv = iio_priv(indio_dev);
int err;
+ /* Plug our own trigger event handler. */
+ err = iio_triggered_buffer_postenable(indio_dev);
+ if (err)
+ goto err;
+
if (!priv->waken) {
/*
* We were already power supplied. Just clear hardware FIFO to
@@ -1250,7 +1255,7 @@ static int zpa2326_postenable_buffer(struct iio_dev *indio_dev)
*/
err = zpa2326_clear_fifo(indio_dev, 0);
if (err)
- goto err;
+ goto err_buffer_predisable;
}
if (!iio_trigger_using_own(indio_dev) && priv->waken) {
@@ -1260,16 +1265,13 @@ static int zpa2326_postenable_buffer(struct iio_dev *indio_dev)
*/
err = zpa2326_config_oneshot(indio_dev, priv->irq);
if (err)
- goto err;
+ goto err_buffer_predisable;
}
- /* Plug our own trigger event handler. */
- err = iio_triggered_buffer_postenable(indio_dev);
- if (err)
- goto err;
-
return 0;
+err_buffer_predisable:
+ iio_triggered_buffer_predisable(indio_dev);
err:
zpa2326_err(indio_dev, "failed to enable buffering (%d)", err);
OpenPOWER on IntegriCloud