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path: root/drivers/iio/pressure/st_pressure_core.c
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Diffstat (limited to 'drivers/iio/pressure/st_pressure_core.c')
-rw-r--r--drivers/iio/pressure/st_pressure_core.c327
1 files changed, 231 insertions, 96 deletions
diff --git a/drivers/iio/pressure/st_pressure_core.c b/drivers/iio/pressure/st_pressure_core.c
index aa61ec15c139..b70d1cee82f3 100644
--- a/drivers/iio/pressure/st_pressure_core.c
+++ b/drivers/iio/pressure/st_pressure_core.c
@@ -1,29 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* STMicroelectronics pressures driver
*
* Copyright 2013 STMicroelectronics Inc.
*
* Denis Ciocca <denis.ciocca@st.com>
- *
- * Licensed under the GPL-2.
*/
#include <linux/kernel.h>
#include <linux/module.h>
-#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/sysfs.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/trigger.h>
-#include <linux/iio/buffer.h>
-#include <asm/unaligned.h>
+#include <linux/unaligned.h>
#include <linux/iio/common/st_sensors.h>
#include "st_pressure.h"
@@ -280,14 +271,28 @@ static const struct st_sensor_settings st_press_sensors_settings[] = {
.mask = 0x04,
},
.drdy_irq = {
- .addr = 0x22,
- .mask_int1 = 0x04,
- .mask_int2 = 0x20,
+ .int1 = {
+ .addr = 0x22,
+ .mask = 0x04,
+ .addr_od = 0x22,
+ .mask_od = 0x40,
+ },
+ .int2 = {
+ .addr = 0x22,
+ .mask = 0x20,
+ .addr_od = 0x22,
+ .mask_od = 0x40,
+ },
.addr_ihl = 0x22,
.mask_ihl = 0x80,
- .addr_od = 0x22,
- .mask_od = 0x40,
- .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR,
+ .stat_drdy = {
+ .addr = ST_SENSORS_DEFAULT_STAT_ADDR,
+ .mask = 0x03,
+ },
+ },
+ .sim = {
+ .addr = 0x20,
+ .value = BIT(0),
},
.multi_read_bit = true,
.bootime = 2,
@@ -335,8 +340,9 @@ static const struct st_sensor_settings st_press_sensors_settings[] = {
.addr = 0x20,
.mask = 0x04,
},
- .drdy_irq = {
- .addr = 0,
+ .sim = {
+ .addr = 0x20,
+ .value = BIT(0),
},
.multi_read_bit = true,
.bootime = 2,
@@ -388,14 +394,22 @@ static const struct st_sensor_settings st_press_sensors_settings[] = {
.mask = 0x04,
},
.drdy_irq = {
- .addr = 0x23,
- .mask_int1 = 0x01,
- .mask_int2 = 0x10,
+ .int1 = {
+ .addr = 0x23,
+ .mask = 0x01,
+ .addr_od = 0x22,
+ .mask_od = 0x40,
+ },
.addr_ihl = 0x22,
.mask_ihl = 0x80,
- .addr_od = 0x22,
- .mask_od = 0x40,
- .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR,
+ .stat_drdy = {
+ .addr = ST_SENSORS_DEFAULT_STAT_ADDR,
+ .mask = 0x03,
+ },
+ },
+ .sim = {
+ .addr = 0x20,
+ .value = BIT(0),
},
.multi_read_bit = true,
.bootime = 2,
@@ -410,6 +424,8 @@ static const struct st_sensor_settings st_press_sensors_settings[] = {
.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
.sensors_supported = {
[0] = LPS22HB_PRESS_DEV_NAME,
+ [1] = LPS33HW_PRESS_DEV_NAME,
+ [2] = LPS35HW_PRESS_DEV_NAME,
},
.ch = (struct iio_chan_spec *)st_press_lps22hb_channels,
.num_ch = ARRAY_SIZE(st_press_lps22hb_channels),
@@ -447,16 +463,163 @@ static const struct st_sensor_settings st_press_sensors_settings[] = {
.mask = 0x02,
},
.drdy_irq = {
- .addr = 0x12,
- .mask_int1 = 0x04,
- .mask_int2 = 0x08,
+ .int1 = {
+ .addr = 0x12,
+ .mask = 0x04,
+ .addr_od = 0x12,
+ .mask_od = 0x40,
+ },
.addr_ihl = 0x12,
.mask_ihl = 0x80,
- .addr_od = 0x12,
- .mask_od = 0x40,
- .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR,
+ .stat_drdy = {
+ .addr = ST_SENSORS_DEFAULT_STAT_ADDR,
+ .mask = 0x03,
+ },
},
- .multi_read_bit = true,
+ .sim = {
+ .addr = 0x10,
+ .value = BIT(0),
+ },
+ .multi_read_bit = false,
+ .bootime = 2,
+ },
+ {
+ /*
+ * CUSTOM VALUES FOR LPS22HH SENSOR
+ * See LPS22HH datasheet:
+ * http://www2.st.com/resource/en/datasheet/lps22hh.pdf
+ */
+ .wai = 0xb3,
+ .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
+ .sensors_supported = {
+ [0] = LPS22HH_PRESS_DEV_NAME,
+ },
+ .ch = (struct iio_chan_spec *)st_press_lps22hb_channels,
+ .num_ch = ARRAY_SIZE(st_press_lps22hb_channels),
+ .odr = {
+ .addr = 0x10,
+ .mask = 0x70,
+ .odr_avl = {
+ { .hz = 1, .value = 0x01 },
+ { .hz = 10, .value = 0x02 },
+ { .hz = 25, .value = 0x03 },
+ { .hz = 50, .value = 0x04 },
+ { .hz = 75, .value = 0x05 },
+ { .hz = 100, .value = 0x06 },
+ { .hz = 200, .value = 0x07 },
+ },
+ },
+ .pw = {
+ .addr = 0x10,
+ .mask = 0x70,
+ .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
+ },
+ .fs = {
+ .fs_avl = {
+ /*
+ * Pressure and temperature sensitivity values
+ * as defined in table 3 of LPS22HH datasheet.
+ */
+ [0] = {
+ .num = ST_PRESS_FS_AVL_1260MB,
+ .gain = ST_PRESS_KPASCAL_NANO_SCALE,
+ .gain2 = ST_PRESS_LPS22HB_LSB_PER_CELSIUS,
+ },
+ },
+ },
+ .bdu = {
+ .addr = 0x10,
+ .mask = BIT(1),
+ },
+ .drdy_irq = {
+ .int1 = {
+ .addr = 0x12,
+ .mask = BIT(2),
+ .addr_od = 0x11,
+ .mask_od = BIT(5),
+ },
+ .addr_ihl = 0x11,
+ .mask_ihl = BIT(6),
+ .stat_drdy = {
+ .addr = ST_SENSORS_DEFAULT_STAT_ADDR,
+ .mask = 0x03,
+ },
+ },
+ .sim = {
+ .addr = 0x10,
+ .value = BIT(0),
+ },
+ .multi_read_bit = false,
+ .bootime = 2,
+ },
+ {
+ /*
+ * CUSTOM VALUES FOR LPS22DF SENSOR
+ * See LPS22DF datasheet:
+ * http://www.st.com/resource/en/datasheet/lps22df.pdf
+ */
+ .wai = 0xb4,
+ .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
+ .sensors_supported = {
+ [0] = LPS22DF_PRESS_DEV_NAME,
+ },
+ .ch = (struct iio_chan_spec *)st_press_lps22hb_channels,
+ .num_ch = ARRAY_SIZE(st_press_lps22hb_channels),
+ .odr = {
+ .addr = 0x10,
+ .mask = 0x78,
+ .odr_avl = {
+ { .hz = 1, .value = 0x01 },
+ { .hz = 4, .value = 0x02 },
+ { .hz = 10, .value = 0x03 },
+ { .hz = 25, .value = 0x04 },
+ { .hz = 50, .value = 0x05 },
+ { .hz = 75, .value = 0x06 },
+ { .hz = 100, .value = 0x07 },
+ { .hz = 200, .value = 0x08 },
+ },
+ },
+ .pw = {
+ .addr = 0x10,
+ .mask = 0x78,
+ .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
+ },
+ .fs = {
+ .fs_avl = {
+ /*
+ * Pressure and temperature sensitivity values
+ * as defined in table 2 of LPS22DF datasheet.
+ */
+ [0] = {
+ .num = ST_PRESS_FS_AVL_1260MB,
+ .gain = ST_PRESS_KPASCAL_NANO_SCALE,
+ .gain2 = ST_PRESS_LPS22HB_LSB_PER_CELSIUS,
+ },
+ },
+ },
+ .bdu = {
+ .addr = 0x11,
+ .mask = BIT(3),
+ },
+ .drdy_irq = {
+ .int1 = {
+ .addr = 0x13,
+ .mask = BIT(5),
+ .addr_od = 0x12,
+ .mask_od = BIT(1),
+ },
+ .addr_ihl = 0x12,
+ .mask_ihl = BIT(3),
+ .stat_drdy = {
+ .addr = ST_SENSORS_DEFAULT_STAT_ADDR,
+ .mask = 0x03,
+ },
+ },
+ .sim = {
+ .addr = 0x0E,
+ .value = BIT(5),
+ },
+ .multi_read_bit = false,
.bootime = 2,
},
};
@@ -467,16 +630,12 @@ static int st_press_write_raw(struct iio_dev *indio_dev,
int val2,
long mask)
{
- int err;
-
switch (mask) {
case IIO_CHAN_INFO_SAMP_FREQ:
if (val2)
return -EINVAL;
- mutex_lock(&indio_dev->mlock);
- err = st_sensors_set_odr(indio_dev, val);
- mutex_unlock(&indio_dev->mlock);
- return err;
+
+ return st_sensors_set_odr(indio_dev, val);
default:
return -EINVAL;
}
@@ -547,7 +706,6 @@ static const struct attribute_group st_press_attribute_group = {
};
static const struct iio_info press_info = {
- .driver_module = THIS_MODULE,
.attrs = &st_press_attribute_group,
.read_raw = &st_press_read_raw,
.write_raw = &st_press_write_raw,
@@ -556,7 +714,6 @@ static const struct iio_info press_info = {
#ifdef CONFIG_IIO_TRIGGER
static const struct iio_trigger_ops st_press_trigger_ops = {
- .owner = THIS_MODULE,
.set_trigger_state = ST_PRESS_TRIGGER_SET_STATE,
.validate_device = st_sensors_validate_device,
};
@@ -565,27 +722,37 @@ 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_NS(st_press_get_settings, "IIO_ST_SENSORS");
+
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);
+ struct device *parent = indio_dev->dev.parent;
+ struct st_sensors_platform_data *pdata = dev_get_platdata(parent);
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;
+ return err;
/*
* Skip timestamping channel while declaring available channels to
@@ -594,70 +761,38 @@ 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;
- press_data->current_fullscale =
- (struct st_sensor_fullscale_avl *)
- &press_data->sensor_settings->fs.fs_avl[0];
+ press_data->current_fullscale = &press_data->sensor_settings->fs.fs_avl[0];
press_data->odr = press_data->sensor_settings->odr.odr_avl[0].hz;
/* Some devices don't support a data ready pin. */
- if (!pdata && press_data->sensor_settings->drdy_irq.addr)
+ if (!pdata && (press_data->sensor_settings->drdy_irq.int1.addr ||
+ press_data->sensor_settings->drdy_irq.int2.addr))
pdata = (struct st_sensors_platform_data *)&default_press_pdata;
- err = st_sensors_init_sensor(indio_dev, press_data->dev->platform_data);
+ err = st_sensors_init_sensor(indio_dev, pdata);
if (err < 0)
- goto st_press_power_off;
+ return err;
err = st_press_allocate_ring(indio_dev);
if (err < 0)
- goto st_press_power_off;
+ return err;
- if (irq > 0) {
+ if (press_data->irq > 0) {
err = st_sensors_allocate_trigger(indio_dev,
ST_PRESS_TRIGGER_OPS);
if (err < 0)
- goto st_press_probe_trigger_error;
+ return err;
}
- err = iio_device_register(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 (irq > 0)
- st_sensors_deallocate_trigger(indio_dev);
-st_press_probe_trigger_error:
- st_press_deallocate_ring(indio_dev);
-st_press_power_off:
- st_sensors_power_disable(indio_dev);
-
- return err;
-}
-EXPORT_SYMBOL(st_press_common_probe);
-
-void st_press_common_remove(struct iio_dev *indio_dev)
-{
- struct st_sensor_data *press_data = iio_priv(indio_dev);
-
- st_sensors_power_disable(indio_dev);
-
- iio_device_unregister(indio_dev);
- if (press_data->get_irq_data_ready(indio_dev) > 0)
- st_sensors_deallocate_trigger(indio_dev);
-
- st_press_deallocate_ring(indio_dev);
+ return devm_iio_device_register(parent, indio_dev);
}
-EXPORT_SYMBOL(st_press_common_remove);
+EXPORT_SYMBOL_NS(st_press_common_probe, "IIO_ST_SENSORS");
MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
MODULE_DESCRIPTION("STMicroelectronics pressures driver");
MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS("IIO_ST_SENSORS");
generated by cgit (git 2.34.1) at 2025-12-27 11:03:55 +0000