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-rw-r--r--drivers/iio/pressure/Kconfig16
-rw-r--r--drivers/iio/pressure/Makefile2
-rw-r--r--drivers/iio/pressure/hp206c.c6
-rw-r--r--drivers/iio/pressure/hsc030pa.c49
-rw-r--r--drivers/iio/pressure/hsc030pa.h7
-rw-r--r--drivers/iio/pressure/hsc030pa_i2c.c9
-rw-r--r--drivers/iio/pressure/hsc030pa_spi.c7
-rw-r--r--drivers/iio/pressure/mprls0025pa.c313
-rw-r--r--drivers/iio/pressure/mprls0025pa.h102
-rw-r--r--drivers/iio/pressure/mprls0025pa_i2c.c100
-rw-r--r--drivers/iio/pressure/mprls0025pa_spi.c92
-rw-r--r--drivers/iio/pressure/st_pressure_i2c.c5
12 files changed, 541 insertions, 167 deletions
diff --git a/drivers/iio/pressure/Kconfig b/drivers/iio/pressure/Kconfig
index 79adfd059c3a7e..3ad38506028ef0 100644
--- a/drivers/iio/pressure/Kconfig
+++ b/drivers/iio/pressure/Kconfig
@@ -114,6 +114,8 @@ config HSC030PA
depends on (I2C || SPI_MASTER)
select HSC030PA_I2C if I2C
select HSC030PA_SPI if SPI_MASTER
+ select IIO_BUFFER
+ select IIO_TRIGGERED_BUFFER
help
Say Y here to build support for the Honeywell TruStability
HSC and SSC pressure and temperature sensor series.
@@ -181,7 +183,9 @@ config MPL3115
config MPRLS0025PA
tristate "Honeywell MPRLS0025PA (MicroPressure sensors series)"
- depends on I2C
+ depends on (I2C || SPI_MASTER)
+ select MPRLS0025PA_I2C if I2C
+ select MPRLS0025PA_SPI if SPI_MASTER
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
help
@@ -192,6 +196,16 @@ config MPRLS0025PA
To compile this driver as a module, choose M here: the module will be
called mprls0025pa.
+config MPRLS0025PA_I2C
+ tristate
+ depends on MPRLS0025PA
+ depends on I2C
+
+config MPRLS0025PA_SPI
+ tristate
+ depends on MPRLS0025PA
+ depends on SPI_MASTER
+
config MS5611
tristate "Measurement Specialties MS5611 pressure sensor driver"
select IIO_BUFFER
diff --git a/drivers/iio/pressure/Makefile b/drivers/iio/pressure/Makefile
index b0f8b94662f209..a93709e357607d 100644
--- a/drivers/iio/pressure/Makefile
+++ b/drivers/iio/pressure/Makefile
@@ -24,6 +24,8 @@ obj-$(CONFIG_MPL115_I2C) += mpl115_i2c.o
obj-$(CONFIG_MPL115_SPI) += mpl115_spi.o
obj-$(CONFIG_MPL3115) += mpl3115.o
obj-$(CONFIG_MPRLS0025PA) += mprls0025pa.o
+obj-$(CONFIG_MPRLS0025PA_I2C) += mprls0025pa_i2c.o
+obj-$(CONFIG_MPRLS0025PA_SPI) += mprls0025pa_spi.o
obj-$(CONFIG_MS5611) += ms5611_core.o
obj-$(CONFIG_MS5611_I2C) += ms5611_i2c.o
obj-$(CONFIG_MS5611_SPI) += ms5611_spi.o
diff --git a/drivers/iio/pressure/hp206c.c b/drivers/iio/pressure/hp206c.c
index a072de6cb59c7f..261af1562827c8 100644
--- a/drivers/iio/pressure/hp206c.c
+++ b/drivers/iio/pressure/hp206c.c
@@ -11,12 +11,12 @@
*/
#include <linux/module.h>
+#include <linux/mod_devicetable.h>
#include <linux/i2c.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/delay.h>
#include <linux/util_macros.h>
-#include <linux/acpi.h>
#include <asm/unaligned.h>
@@ -400,20 +400,18 @@ static const struct i2c_device_id hp206c_id[] = {
};
MODULE_DEVICE_TABLE(i2c, hp206c_id);
-#ifdef CONFIG_ACPI
static const struct acpi_device_id hp206c_acpi_match[] = {
{"HOP206C", 0},
{ },
};
MODULE_DEVICE_TABLE(acpi, hp206c_acpi_match);
-#endif
static struct i2c_driver hp206c_driver = {
.probe = hp206c_probe,
.id_table = hp206c_id,
.driver = {
.name = "hp206c",
- .acpi_match_table = ACPI_PTR(hp206c_acpi_match),
+ .acpi_match_table = hp206c_acpi_match,
},
};
diff --git a/drivers/iio/pressure/hsc030pa.c b/drivers/iio/pressure/hsc030pa.c
index d6a51f0c335fad..1682b90d4557c2 100644
--- a/drivers/iio/pressure/hsc030pa.c
+++ b/drivers/iio/pressure/hsc030pa.c
@@ -22,8 +22,11 @@
#include <linux/types.h>
#include <linux/units.h>
+#include <linux/iio/buffer.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
#include <asm/unaligned.h>
@@ -297,6 +300,29 @@ static int hsc_get_measurement(struct hsc_data *data)
return 0;
}
+static irqreturn_t hsc_trigger_handler(int irq, void *private)
+{
+ struct iio_poll_func *pf = private;
+ struct iio_dev *indio_dev = pf->indio_dev;
+ struct hsc_data *data = iio_priv(indio_dev);
+ int ret;
+
+ ret = hsc_get_measurement(data);
+ if (ret)
+ goto error;
+
+ memcpy(&data->scan.chan[0], &data->buffer[0], 2);
+ memcpy(&data->scan.chan[1], &data->buffer[2], 2);
+
+ iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
+ iio_get_time_ns(indio_dev));
+
+error:
+ iio_trigger_notify_done(indio_dev->trig);
+
+ return IRQ_HANDLED;
+}
+
/*
* IIO ABI expects
* value = (conv + offset) * scale
@@ -382,13 +408,29 @@ static const struct iio_chan_spec hsc_channels[] = {
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_OFFSET),
+ .scan_index = 0,
+ .scan_type = {
+ .sign = 'u',
+ .realbits = 14,
+ .storagebits = 16,
+ .endianness = IIO_BE,
+ },
},
{
.type = IIO_TEMP,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_OFFSET),
+ .scan_index = 1,
+ .scan_type = {
+ .sign = 'u',
+ .realbits = 11,
+ .storagebits = 16,
+ .shift = 5,
+ .endianness = IIO_BE,
+ },
},
+ IIO_CHAN_SOFT_TIMESTAMP(2),
};
static const struct iio_info hsc_info = {
@@ -406,7 +448,7 @@ int hsc_common_probe(struct device *dev, hsc_recv_fn recv)
struct hsc_data *hsc;
struct iio_dev *indio_dev;
const char *triplet;
- u64 tmp;
+ s64 tmp;
int ret;
indio_dev = devm_iio_device_alloc(dev, sizeof(*hsc));
@@ -485,6 +527,11 @@ int hsc_common_probe(struct device *dev, hsc_recv_fn recv)
indio_dev->channels = hsc->chip->channels;
indio_dev->num_channels = hsc->chip->num_channels;
+ ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
+ hsc_trigger_handler, NULL);
+ if (ret)
+ return ret;
+
return devm_iio_device_register(dev, indio_dev);
}
EXPORT_SYMBOL_NS(hsc_common_probe, IIO_HONEYWELL_HSC030PA);
diff --git a/drivers/iio/pressure/hsc030pa.h b/drivers/iio/pressure/hsc030pa.h
index d20420dba4f6b9..9b40f46f575fff 100644
--- a/drivers/iio/pressure/hsc030pa.h
+++ b/drivers/iio/pressure/hsc030pa.h
@@ -10,7 +10,10 @@
#include <linux/types.h>
+#include <linux/iio/iio.h>
+
#define HSC_REG_MEASUREMENT_RD_SIZE 4
+#define HSC_RESP_TIME_MS 2
struct device;
@@ -53,6 +56,10 @@ struct hsc_data {
s32 p_scale_dec;
s64 p_offset;
s32 p_offset_dec;
+ struct {
+ __be16 chan[2];
+ s64 timestamp __aligned(8);
+ } scan;
u8 buffer[HSC_REG_MEASUREMENT_RD_SIZE] __aligned(IIO_DMA_MINALIGN);
};
diff --git a/drivers/iio/pressure/hsc030pa_i2c.c b/drivers/iio/pressure/hsc030pa_i2c.c
index e2b524b3641709..b3fd230e71da12 100644
--- a/drivers/iio/pressure/hsc030pa_i2c.c
+++ b/drivers/iio/pressure/hsc030pa_i2c.c
@@ -4,14 +4,17 @@
*
* Copyright (c) 2023 Petre Rodan <petre.rodan@subdimension.ro>
*
- * Datasheet: https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/trustability-hsc-series/documents/sps-siot-trustability-hsc-series-high-accuracy-board-mount-pressure-sensors-50099148-a-en-ciid-151133.pdf [hsc]
- * Datasheet: https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/common/documents/sps-siot-i2c-comms-digital-output-pressure-sensors-tn-008201-3-en-ciid-45841.pdf [i2c related]
+ * Datasheet: https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/common/documents/sps-siot-i2c-comms-digital-output-pressure-sensors-tn-008201-3-en-ciid-45841.pdf
+ * Datasheet: https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/common/documents/sps-siot-sleep-mode-technical-note-008286-1-en-ciid-155793.pdf
*/
+#include <linux/delay.h>
+#include <linux/device.h>
#include <linux/errno.h>
#include <linux/i2c.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
+#include <linux/types.h>
#include <linux/iio/iio.h>
@@ -23,6 +26,8 @@ static int hsc_i2c_recv(struct hsc_data *data)
struct i2c_msg msg;
int ret;
+ msleep_interruptible(HSC_RESP_TIME_MS);
+
msg.addr = client->addr;
msg.flags = client->flags | I2C_M_RD;
msg.len = HSC_REG_MEASUREMENT_RD_SIZE;
diff --git a/drivers/iio/pressure/hsc030pa_spi.c b/drivers/iio/pressure/hsc030pa_spi.c
index a719bade83266b..818fa630345450 100644
--- a/drivers/iio/pressure/hsc030pa_spi.c
+++ b/drivers/iio/pressure/hsc030pa_spi.c
@@ -4,13 +4,17 @@
*
* Copyright (c) 2023 Petre Rodan <petre.rodan@subdimension.ro>
*
- * Datasheet: https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/trustability-hsc-series/documents/sps-siot-trustability-hsc-series-high-accuracy-board-mount-pressure-sensors-50099148-a-en-ciid-151133.pdf
+ * Datasheet: https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/common/documents/sps-siot-spi-comms-digital-ouptu-pressure-sensors-tn-008202-3-en-ciid-45843.pdf
+ * Datasheet: https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/common/documents/sps-siot-sleep-mode-technical-note-008286-1-en-ciid-155793.pdf
*/
+#include <linux/delay.h>
+#include <linux/device.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/spi/spi.h>
#include <linux/stddef.h>
+#include <linux/types.h>
#include <linux/iio/iio.h>
@@ -25,6 +29,7 @@ static int hsc_spi_recv(struct hsc_data *data)
.len = HSC_REG_MEASUREMENT_RD_SIZE,
};
+ msleep_interruptible(HSC_RESP_TIME_MS);
return spi_sync_transfer(spi, &xfer, 1);
}
diff --git a/drivers/iio/pressure/mprls0025pa.c b/drivers/iio/pressure/mprls0025pa.c
index 30fb2de368210f..33a15d4c642c0a 100644
--- a/drivers/iio/pressure/mprls0025pa.c
+++ b/drivers/iio/pressure/mprls0025pa.c
@@ -5,17 +5,13 @@
* Copyright (c) Andreas Klinger <ak@it-klinger.de>
*
* Data sheet:
- * https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/
- * products/sensors/pressure-sensors/board-mount-pressure-sensors/
- * micropressure-mpr-series/documents/
- * sps-siot-mpr-series-datasheet-32332628-ciid-172626.pdf
+ * https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/micropressure-mpr-series/documents/sps-siot-mpr-series-datasheet-32332628-ciid-172626.pdf
*
- * 7-bit I2C default slave address: 0x18
*/
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/i2c.h>
+#include <linux/array_size.h>
+#include <linux/bitfield.h>
+#include <linux/bits.h>
#include <linux/math64.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
@@ -25,7 +21,6 @@
#include <linux/gpio/consumer.h>
#include <linux/iio/buffer.h>
-#include <linux/iio/iio.h>
#include <linux/iio/trigger_consumer.h>
#include <linux/iio/triggered_buffer.h>
@@ -33,11 +28,15 @@
#include <asm/unaligned.h>
-/* bits in i2c status byte */
-#define MPR_I2C_POWER BIT(6) /* device is powered */
-#define MPR_I2C_BUSY BIT(5) /* device is busy */
-#define MPR_I2C_MEMORY BIT(2) /* integrity test passed */
-#define MPR_I2C_MATH BIT(0) /* internal math saturation */
+#include "mprls0025pa.h"
+
+/* bits in status byte */
+#define MPR_ST_POWER BIT(6) /* device is powered */
+#define MPR_ST_BUSY BIT(5) /* device is busy */
+#define MPR_ST_MEMORY BIT(2) /* integrity test passed */
+#define MPR_ST_MATH BIT(0) /* internal math saturation */
+
+#define MPR_ST_ERR_FLAG (MPR_ST_BUSY | MPR_ST_MEMORY | MPR_ST_MATH)
/*
* support _RAW sysfs interface:
@@ -70,60 +69,87 @@
* transfer function B: 2.5% to 22.5% of 2^24
* transfer function C: 20% to 80% of 2^24
*/
-enum mpr_func_id {
- MPR_FUNCTION_A,
- MPR_FUNCTION_B,
- MPR_FUNCTION_C,
-};
-
struct mpr_func_spec {
u32 output_min;
u32 output_max;
};
static const struct mpr_func_spec mpr_func_spec[] = {
- [MPR_FUNCTION_A] = {.output_min = 1677722, .output_max = 15099494},
- [MPR_FUNCTION_B] = {.output_min = 419430, .output_max = 3774874},
- [MPR_FUNCTION_C] = {.output_min = 3355443, .output_max = 13421773},
+ [MPR_FUNCTION_A] = { .output_min = 1677722, .output_max = 15099494 },
+ [MPR_FUNCTION_B] = { .output_min = 419430, .output_max = 3774874 },
+ [MPR_FUNCTION_C] = { .output_min = 3355443, .output_max = 13421773 },
};
-struct mpr_chan {
- s32 pres; /* pressure value */
- s64 ts; /* timestamp */
+enum mpr_variants {
+ MPR0001BA = 0x00, MPR01_6BA = 0x01, MPR02_5BA = 0x02, MPR0060MG = 0x03,
+ MPR0100MG = 0x04, MPR0160MG = 0x05, MPR0250MG = 0x06, MPR0400MG = 0x07,
+ MPR0600MG = 0x08, MPR0001BG = 0x09, MPR01_6BG = 0x0a, MPR02_5BG = 0x0b,
+ MPR0100KA = 0x0c, MPR0160KA = 0x0d, MPR0250KA = 0x0e, MPR0006KG = 0x0f,
+ MPR0010KG = 0x10, MPR0016KG = 0x11, MPR0025KG = 0x12, MPR0040KG = 0x13,
+ MPR0060KG = 0x14, MPR0100KG = 0x15, MPR0160KG = 0x16, MPR0250KG = 0x17,
+ MPR0015PA = 0x18, MPR0025PA = 0x19, MPR0030PA = 0x1a, MPR0001PG = 0x1b,
+ MPR0005PG = 0x1c, MPR0015PG = 0x1d, MPR0030PG = 0x1e, MPR0300YG = 0x1f,
+ MPR_VARIANTS_MAX
+};
+
+static const char * const mpr_triplet_variants[MPR_VARIANTS_MAX] = {
+ [MPR0001BA] = "0001BA", [MPR01_6BA] = "01.6BA", [MPR02_5BA] = "02.5BA",
+ [MPR0060MG] = "0060MG", [MPR0100MG] = "0100MG", [MPR0160MG] = "0160MG",
+ [MPR0250MG] = "0250MG", [MPR0400MG] = "0400MG", [MPR0600MG] = "0600MG",
+ [MPR0001BG] = "0001BG", [MPR01_6BG] = "01.6BG", [MPR02_5BG] = "02.5BG",
+ [MPR0100KA] = "0100KA", [MPR0160KA] = "0160KA", [MPR0250KA] = "0250KA",
+ [MPR0006KG] = "0006KG", [MPR0010KG] = "0010KG", [MPR0016KG] = "0016KG",
+ [MPR0025KG] = "0025KG", [MPR0040KG] = "0040KG", [MPR0060KG] = "0060KG",
+ [MPR0100KG] = "0100KG", [MPR0160KG] = "0160KG", [MPR0250KG] = "0250KG",
+ [MPR0015PA] = "0015PA", [MPR0025PA] = "0025PA", [MPR0030PA] = "0030PA",
+ [MPR0001PG] = "0001PG", [MPR0005PG] = "0005PG", [MPR0015PG] = "0015PG",
+ [MPR0030PG] = "0030PG", [MPR0300YG] = "0300YG"
+};
+
+/**
+ * struct mpr_range_config - list of pressure ranges based on nomenclature
+ * @pmin: lowest pressure that can be measured
+ * @pmax: highest pressure that can be measured
+ */
+struct mpr_range_config {
+ const s32 pmin;
+ const s32 pmax;
};
-struct mpr_data {
- struct i2c_client *client;
- struct mutex lock; /*
- * access to device during read
- */
- u32 pmin; /* minimal pressure in pascal */
- u32 pmax; /* maximal pressure in pascal */
- enum mpr_func_id function; /* transfer function */
- u32 outmin; /*
- * minimal numerical range raw
- * value from sensor
- */
- u32 outmax; /*
- * maximal numerical range raw
- * value from sensor
- */
- int scale; /* int part of scale */
- int scale2; /* nano part of scale */
- int offset; /* int part of offset */
- int offset2; /* nano part of offset */
- struct gpio_desc *gpiod_reset; /* reset */
- int irq; /*
- * end of conversion irq;
- * used to distinguish between
- * irq mode and reading in a
- * loop until data is ready
- */
- struct completion completion; /* handshake from irq to read */
- struct mpr_chan chan; /*
- * channel values for buffered
- * mode
- */
+/* All min max limits have been converted to pascals */
+static const struct mpr_range_config mpr_range_config[MPR_VARIANTS_MAX] = {
+ [MPR0001BA] = { .pmin = 0, .pmax = 100000 },
+ [MPR01_6BA] = { .pmin = 0, .pmax = 160000 },
+ [MPR02_5BA] = { .pmin = 0, .pmax = 250000 },
+ [MPR0060MG] = { .pmin = 0, .pmax = 6000 },
+ [MPR0100MG] = { .pmin = 0, .pmax = 10000 },
+ [MPR0160MG] = { .pmin = 0, .pmax = 16000 },
+ [MPR0250MG] = { .pmin = 0, .pmax = 25000 },
+ [MPR0400MG] = { .pmin = 0, .pmax = 40000 },
+ [MPR0600MG] = { .pmin = 0, .pmax = 60000 },
+ [MPR0001BG] = { .pmin = 0, .pmax = 100000 },
+ [MPR01_6BG] = { .pmin = 0, .pmax = 160000 },
+ [MPR02_5BG] = { .pmin = 0, .pmax = 250000 },
+ [MPR0100KA] = { .pmin = 0, .pmax = 100000 },
+ [MPR0160KA] = { .pmin = 0, .pmax = 160000 },
+ [MPR0250KA] = { .pmin = 0, .pmax = 250000 },
+ [MPR0006KG] = { .pmin = 0, .pmax = 6000 },
+ [MPR0010KG] = { .pmin = 0, .pmax = 10000 },
+ [MPR0016KG] = { .pmin = 0, .pmax = 16000 },
+ [MPR0025KG] = { .pmin = 0, .pmax = 25000 },
+ [MPR0040KG] = { .pmin = 0, .pmax = 40000 },
+ [MPR0060KG] = { .pmin = 0, .pmax = 60000 },
+ [MPR0100KG] = { .pmin = 0, .pmax = 100000 },
+ [MPR0160KG] = { .pmin = 0, .pmax = 160000 },
+ [MPR0250KG] = { .pmin = 0, .pmax = 250000 },
+ [MPR0015PA] = { .pmin = 0, .pmax = 103421 },
+ [MPR0025PA] = { .pmin = 0, .pmax = 172369 },
+ [MPR0030PA] = { .pmin = 0, .pmax = 206843 },
+ [MPR0001PG] = { .pmin = 0, .pmax = 6895 },
+ [MPR0005PG] = { .pmin = 0, .pmax = 34474 },
+ [MPR0015PG] = { .pmin = 0, .pmax = 103421 },
+ [MPR0030PG] = { .pmin = 0, .pmax = 206843 },
+ [MPR0300YG] = { .pmin = 0, .pmax = 39997 }
};
static const struct iio_chan_spec mpr_channels[] = {
@@ -153,11 +179,11 @@ static void mpr_reset(struct mpr_data *data)
}
/**
- * mpr_read_pressure() - Read pressure value from sensor via I2C
+ * mpr_read_pressure() - Read pressure value from sensor
* @data: Pointer to private data struct.
* @press: Output value read from sensor.
*
- * Reading from the sensor by sending and receiving I2C telegrams.
+ * Reading from the sensor by sending and receiving telegrams.
*
* If there is an end of conversion (EOC) interrupt registered the function
* waits for a maximum of one second for the interrupt.
@@ -170,25 +196,17 @@ static void mpr_reset(struct mpr_data *data)
*/
static int mpr_read_pressure(struct mpr_data *data, s32 *press)
{
- struct device *dev = &data->client->dev;
+ struct device *dev = data->dev;
int ret, i;
- u8 wdata[] = {0xAA, 0x00, 0x00};
- s32 status;
int nloops = 10;
- u8 buf[4];
reinit_completion(&data->completion);
- ret = i2c_master_send(data->client, wdata, sizeof(wdata));
+ ret = data->ops->write(data, MPR_CMD_SYNC, MPR_PKT_SYNC_LEN);
if (ret < 0) {
dev_err(dev, "error while writing ret: %d\n", ret);
return ret;
}
- if (ret != sizeof(wdata)) {
- dev_err(dev, "received size doesn't fit - ret: %d / %u\n", ret,
- (u32)sizeof(wdata));
- return -EIO;
- }
if (data->irq > 0) {
ret = wait_for_completion_timeout(&data->completion, HZ);
@@ -206,14 +224,14 @@ static int mpr_read_pressure(struct mpr_data *data, s32 *press)
* quite long
*/
usleep_range(5000, 10000);
- status = i2c_smbus_read_byte(data->client);
- if (status < 0) {
+ ret = data->ops->read(data, MPR_CMD_NOP, 1);
+ if (ret < 0) {
dev_err(dev,
"error while reading, status: %d\n",
- status);
- return status;
+ ret);
+ return ret;
}
- if (!(status & MPR_I2C_BUSY))
+ if (!(data->buffer[0] & MPR_ST_ERR_FLAG))
break;
}
if (i == nloops) {
@@ -222,29 +240,19 @@ static int mpr_read_pressure(struct mpr_data *data, s32 *press)
}
}
- ret = i2c_master_recv(data->client, buf, sizeof(buf));
- if (ret < 0) {
- dev_err(dev, "error in i2c_master_recv ret: %d\n", ret);
+ ret = data->ops->read(data, MPR_CMD_NOP, MPR_PKT_NOP_LEN);
+ if (ret < 0)
return ret;
- }
- if (ret != sizeof(buf)) {
- dev_err(dev, "received size doesn't fit - ret: %d / %u\n", ret,
- (u32)sizeof(buf));
- return -EIO;
- }
- if (buf[0] & MPR_I2C_BUSY) {
- /*
- * it should never be the case that status still indicates
- * business
- */
- dev_err(dev, "data still not ready: %08x\n", buf[0]);
+ if (data->buffer[0] & MPR_ST_ERR_FLAG) {
+ dev_err(data->dev,
+ "unexpected status byte %02x\n", data->buffer[0]);
return -ETIMEDOUT;
}
- *press = get_unaligned_be24(&buf[1]);
+ *press = get_unaligned_be24(&data->buffer[1]);
- dev_dbg(dev, "received: %*ph cnt: %d\n", ret, buf, *press);
+ dev_dbg(dev, "received: %*ph cnt: %d\n", ret, data->buffer, *press);
return 0;
}
@@ -271,7 +279,7 @@ static irqreturn_t mpr_trigger_handler(int irq, void *p)
goto err;
iio_push_to_buffers_with_timestamp(indio_dev, &data->chan,
- iio_get_time_ns(indio_dev));
+ iio_get_time_ns(indio_dev));
err:
mutex_unlock(&data->lock);
@@ -316,25 +324,23 @@ static const struct iio_info mpr_info = {
.read_raw = &mpr_read_raw,
};
-static int mpr_probe(struct i2c_client *client)
+int mpr_common_probe(struct device *dev, const struct mpr_ops *ops, int irq)
{
int ret;
struct mpr_data *data;
struct iio_dev *indio_dev;
- struct device *dev = &client->dev;
+ const char *triplet;
s64 scale, offset;
-
- if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_READ_BYTE))
- return dev_err_probe(dev, -EOPNOTSUPP,
- "I2C functionality not supported\n");
+ u32 func;
indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
if (!indio_dev)
- return dev_err_probe(dev, -ENOMEM, "couldn't get iio_dev\n");
+ return -ENOMEM;
data = iio_priv(indio_dev);
- data->client = client;
- data->irq = client->irq;
+ data->dev = dev;
+ data->ops = ops;
+ data->irq = irq;
mutex_init(&data->lock);
init_completion(&data->completion);
@@ -348,103 +354,102 @@ static int mpr_probe(struct i2c_client *client)
ret = devm_regulator_get_enable(dev, "vdd");
if (ret)
return dev_err_probe(dev, ret,
- "can't get and enable vdd supply\n");
+ "can't get and enable vdd supply\n");
- if (dev_fwnode(dev)) {
+ ret = data->ops->init(data->dev);
+ if (ret)
+ return ret;
+
+ ret = device_property_read_u32(dev,
+ "honeywell,transfer-function", &func);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "honeywell,transfer-function could not be read\n");
+ data->function = func - 1;
+ if (data->function > MPR_FUNCTION_C)
+ return dev_err_probe(dev, -EINVAL,
+ "honeywell,transfer-function %d invalid\n",
+ data->function);
+
+ ret = device_property_read_string(dev, "honeywell,pressure-triplet",
+ &triplet);
+ if (ret) {
ret = device_property_read_u32(dev, "honeywell,pmin-pascal",
- &data->pmin);
+ &data->pmin);
if (ret)
return dev_err_probe(dev, ret,
- "honeywell,pmin-pascal could not be read\n");
+ "honeywell,pmin-pascal could not be read\n");
+
ret = device_property_read_u32(dev, "honeywell,pmax-pascal",
- &data->pmax);
+ &data->pmax);
if (ret)
return dev_err_probe(dev, ret,
- "honeywell,pmax-pascal could not be read\n");
- ret = device_property_read_u32(dev,
- "honeywell,transfer-function", &data->function);
- if (ret)
- return dev_err_probe(dev, ret,
- "honeywell,transfer-function could not be read\n");
- if (data->function > MPR_FUNCTION_C)
- return dev_err_probe(dev, -EINVAL,
- "honeywell,transfer-function %d invalid\n",
- data->function);
+ "honeywell,pmax-pascal could not be read\n");
} else {
- /* when loaded as i2c device we need to use default values */
- dev_notice(dev, "firmware node not found; using defaults\n");
- data->pmin = 0;
- data->pmax = 172369; /* 25 psi */
- data->function = MPR_FUNCTION_A;
+ ret = device_property_match_property_string(dev,
+ "honeywell,pressure-triplet",
+ mpr_triplet_variants,
+ MPR_VARIANTS_MAX);
+ if (ret < 0)
+ return dev_err_probe(dev, -EINVAL,
+ "honeywell,pressure-triplet is invalid\n");
+
+ data->pmin = mpr_range_config[ret].pmin;
+ data->pmax = mpr_range_config[ret].pmax;
}
+ if (data->pmin >= data->pmax)
+ return dev_err_probe(dev, -EINVAL,
+ "pressure limits are invalid\n");
+
data->outmin = mpr_func_spec[data->function].output_min;
data->outmax = mpr_func_spec[data->function].output_max;
/* use 64 bit calculation for preserving a reasonable precision */
scale = div_s64(((s64)(data->pmax - data->pmin)) * NANO,
- data->outmax - data->outmin);
+ data->outmax - data->outmin);
data->scale = div_s64_rem(scale, NANO, &data->scale2);
/*
* multiply with NANO before dividing by scale and later divide by NANO
* again.
*/
offset = ((-1LL) * (s64)data->outmin) * NANO -
- div_s64(div_s64((s64)data->pmin * NANO, scale), NANO);
+ div_s64(div_s64((s64)data->pmin * NANO, scale), NANO);
data->offset = div_s64_rem(offset, NANO, &data->offset2);
if (data->irq > 0) {
ret = devm_request_irq(dev, data->irq, mpr_eoc_handler,
- IRQF_TRIGGER_RISING, client->name, data);
+ IRQF_TRIGGER_RISING,
+ dev_name(dev),
+ data);
if (ret)
return dev_err_probe(dev, ret,
- "request irq %d failed\n", data->irq);
+ "request irq %d failed\n", data->irq);
}
data->gpiod_reset = devm_gpiod_get_optional(dev, "reset",
- GPIOD_OUT_HIGH);
+ GPIOD_OUT_HIGH);
if (IS_ERR(data->gpiod_reset))
return dev_err_probe(dev, PTR_ERR(data->gpiod_reset),
- "request reset-gpio failed\n");
+ "request reset-gpio failed\n");
mpr_reset(data);
ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
- mpr_trigger_handler, NULL);
+ mpr_trigger_handler, NULL);
if (ret)
return dev_err_probe(dev, ret,
- "iio triggered buffer setup failed\n");
+ "iio triggered buffer setup failed\n");
ret = devm_iio_device_register(dev, indio_dev);
if (ret)
return dev_err_probe(dev, ret,
- "unable to register iio device\n");
+ "unable to register iio device\n");
return 0;
}
-
-static const struct of_device_id mpr_matches[] = {
- { .compatible = "honeywell,mprls0025pa" },
- { }
-};
-MODULE_DEVICE_TABLE(of, mpr_matches);
-
-static const struct i2c_device_id mpr_id[] = {
- { "mprls0025pa" },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, mpr_id);
-
-static struct i2c_driver mpr_driver = {
- .probe = mpr_probe,
- .id_table = mpr_id,
- .driver = {
- .name = "mprls0025pa",
- .of_match_table = mpr_matches,
- },
-};
-module_i2c_driver(mpr_driver);
+EXPORT_SYMBOL_NS(mpr_common_probe, IIO_HONEYWELL_MPRLS0025PA);
MODULE_AUTHOR("Andreas Klinger <ak@it-klinger.de>");
-MODULE_DESCRIPTION("Honeywell MPRLS0025PA I2C driver");
+MODULE_DESCRIPTION("Honeywell MPR pressure sensor core driver");
MODULE_LICENSE("GPL");
diff --git a/drivers/iio/pressure/mprls0025pa.h b/drivers/iio/pressure/mprls0025pa.h
new file mode 100644
index 00000000000000..9d5c30afa9d69a
--- /dev/null
+++ b/drivers/iio/pressure/mprls0025pa.h
@@ -0,0 +1,102 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * MPRLS0025PA - Honeywell MicroPressure pressure sensor series driver
+ *
+ * Copyright (c) Andreas Klinger <ak@it-klinger.de>
+ *
+ * Data sheet:
+ * https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/micropressure-mpr-series/documents/sps-siot-mpr-series-datasheet-32332628-ciid-172626.pdf
+ */
+
+#ifndef _MPRLS0025PA_H
+#define _MPRLS0025PA_H
+
+#include <linux/completion.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/stddef.h>
+#include <linux/types.h>
+
+#include <linux/iio/iio.h>
+
+#define MPR_MEASUREMENT_RD_SIZE 4
+#define MPR_CMD_NOP 0xf0
+#define MPR_CMD_SYNC 0xaa
+#define MPR_PKT_NOP_LEN MPR_MEASUREMENT_RD_SIZE
+#define MPR_PKT_SYNC_LEN 3
+
+struct device;
+
+struct iio_chan_spec;
+struct iio_dev;
+
+struct mpr_data;
+struct mpr_ops;
+
+/**
+ * struct mpr_chan
+ * @pres: pressure value
+ * @ts: timestamp
+ */
+struct mpr_chan {
+ s32 pres;
+ s64 ts;
+};
+
+enum mpr_func_id {
+ MPR_FUNCTION_A,
+ MPR_FUNCTION_B,
+ MPR_FUNCTION_C,
+};
+
+/**
+ * struct mpr_data
+ * @dev: current device structure
+ * @ops: functions that implement the sensor reads/writes, bus init
+ * @lock: access to device during read
+ * @pmin: minimal pressure in pascal
+ * @pmax: maximal pressure in pascal
+ * @function: transfer function
+ * @outmin: minimum raw pressure in counts (based on transfer function)
+ * @outmax: maximum raw pressure in counts (based on transfer function)
+ * @scale: pressure scale
+ * @scale2: pressure scale, decimal number
+ * @offset: pressure offset
+ * @offset2: pressure offset, decimal number
+ * @gpiod_reset: reset
+ * @irq: end of conversion irq. used to distinguish between irq mode and
+ * reading in a loop until data is ready
+ * @completion: handshake from irq to read
+ * @chan: channel values for buffered mode
+ * @buffer: raw conversion data
+ */
+struct mpr_data {
+ struct device *dev;
+ const struct mpr_ops *ops;
+ struct mutex lock;
+ u32 pmin;
+ u32 pmax;
+ enum mpr_func_id function;
+ u32 outmin;
+ u32 outmax;
+ int scale;
+ int scale2;
+ int offset;
+ int offset2;
+ struct gpio_desc *gpiod_reset;
+ int irq;
+ struct completion completion;
+ struct mpr_chan chan;
+ u8 buffer[MPR_MEASUREMENT_RD_SIZE] __aligned(IIO_DMA_MINALIGN);
+};
+
+struct mpr_ops {
+ int (*init)(struct device *dev);
+ int (*read)(struct mpr_data *data, const u8 cmd, const u8 cnt);
+ int (*write)(struct mpr_data *data, const u8 cmd, const u8 cnt);
+};
+
+int mpr_common_probe(struct device *dev, const struct mpr_ops *ops, int irq);
+
+#endif
diff --git a/drivers/iio/pressure/mprls0025pa_i2c.c b/drivers/iio/pressure/mprls0025pa_i2c.c
new file mode 100644
index 00000000000000..7a5c5aa2b456b9
--- /dev/null
+++ b/drivers/iio/pressure/mprls0025pa_i2c.c
@@ -0,0 +1,100 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * MPRLS0025PA - Honeywell MicroPressure pressure sensor series driver
+ *
+ * Copyright (c) Andreas Klinger <ak@it-klinger.de>
+ *
+ * Data sheet:
+ * https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/micropressure-mpr-series/documents/sps-siot-mpr-series-datasheet-32332628-ciid-172626.pdf
+ */
+
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/i2c.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/types.h>
+
+#include "mprls0025pa.h"
+
+static int mpr_i2c_init(struct device *unused)
+{
+ return 0;
+}
+
+static int mpr_i2c_read(struct mpr_data *data, const u8 unused, const u8 cnt)
+{
+ int ret;
+ struct i2c_client *client = to_i2c_client(data->dev);
+
+ if (cnt > MPR_MEASUREMENT_RD_SIZE)
+ return -EOVERFLOW;
+
+ memset(data->buffer, 0, MPR_MEASUREMENT_RD_SIZE);
+ ret = i2c_master_recv(client, data->buffer, cnt);
+ if (ret < 0)
+ return ret;
+ else if (ret != cnt)
+ return -EIO;
+
+ return 0;
+}
+
+static int mpr_i2c_write(struct mpr_data *data, const u8 cmd, const u8 unused)
+{
+ int ret;
+ struct i2c_client *client = to_i2c_client(data->dev);
+ u8 wdata[MPR_PKT_SYNC_LEN];
+
+ memset(wdata, 0, sizeof(wdata));
+ wdata[0] = cmd;
+
+ ret = i2c_master_send(client, wdata, MPR_PKT_SYNC_LEN);
+ if (ret < 0)
+ return ret;
+ else if (ret != MPR_PKT_SYNC_LEN)
+ return -EIO;
+
+ return 0;
+}
+
+static const struct mpr_ops mpr_i2c_ops = {
+ .init = mpr_i2c_init,
+ .read = mpr_i2c_read,
+ .write = mpr_i2c_write,
+};
+
+static int mpr_i2c_probe(struct i2c_client *client)
+{
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_READ_BYTE))
+ return -EOPNOTSUPP;
+
+ return mpr_common_probe(&client->dev, &mpr_i2c_ops, client->irq);
+}
+
+static const struct of_device_id mpr_i2c_match[] = {
+ { .compatible = "honeywell,mprls0025pa" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, mpr_i2c_match);
+
+static const struct i2c_device_id mpr_i2c_id[] = {
+ { "mprls0025pa" },
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, mpr_i2c_id);
+
+static struct i2c_driver mpr_i2c_driver = {
+ .probe = mpr_i2c_probe,
+ .id_table = mpr_i2c_id,
+ .driver = {
+ .name = "mprls0025pa",
+ .of_match_table = mpr_i2c_match,
+ },
+};
+module_i2c_driver(mpr_i2c_driver);
+
+MODULE_AUTHOR("Andreas Klinger <ak@it-klinger.de>");
+MODULE_DESCRIPTION("Honeywell MPR pressure sensor i2c driver");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_HONEYWELL_MPRLS0025PA);
diff --git a/drivers/iio/pressure/mprls0025pa_spi.c b/drivers/iio/pressure/mprls0025pa_spi.c
new file mode 100644
index 00000000000000..3aed14cd95c5ab
--- /dev/null
+++ b/drivers/iio/pressure/mprls0025pa_spi.c
@@ -0,0 +1,92 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * MPRLS0025PA - Honeywell MicroPressure MPR series SPI sensor driver
+ *
+ * Copyright (c) 2024 Petre Rodan <petre.rodan@subdimension.ro>
+ *
+ * Data sheet:
+ * https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/micropressure-mpr-series/documents/sps-siot-mpr-series-datasheet-32332628-ciid-172626.pdf
+ */
+
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/spi/spi.h>
+#include <linux/stddef.h>
+#include <linux/types.h>
+
+#include "mprls0025pa.h"
+
+struct mpr_spi_buf {
+ u8 tx[MPR_MEASUREMENT_RD_SIZE] __aligned(IIO_DMA_MINALIGN);
+};
+
+static int mpr_spi_init(struct device *dev)
+{
+ struct spi_device *spi = to_spi_device(dev);
+ struct mpr_spi_buf *buf;
+
+ buf = devm_kzalloc(dev, sizeof(*buf), GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ spi_set_drvdata(spi, buf);
+
+ return 0;
+}
+
+static int mpr_spi_xfer(struct mpr_data *data, const u8 cmd, const u8 pkt_len)
+{
+ struct spi_device *spi = to_spi_device(data->dev);
+ struct mpr_spi_buf *buf = spi_get_drvdata(spi);
+ struct spi_transfer xfer;
+
+ if (pkt_len > MPR_MEASUREMENT_RD_SIZE)
+ return -EOVERFLOW;
+
+ buf->tx[0] = cmd;
+ xfer.tx_buf = buf->tx;
+ xfer.rx_buf = data->buffer;
+ xfer.len = pkt_len;
+
+ return spi_sync_transfer(spi, &xfer, 1);
+}
+
+static const struct mpr_ops mpr_spi_ops = {
+ .init = mpr_spi_init,
+ .read = mpr_spi_xfer,
+ .write = mpr_spi_xfer,
+};
+
+static int mpr_spi_probe(struct spi_device *spi)
+{
+ return mpr_common_probe(&spi->dev, &mpr_spi_ops, spi->irq);
+}
+
+static const struct of_device_id mpr_spi_match[] = {
+ { .compatible = "honeywell,mprls0025pa" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, mpr_spi_match);
+
+static const struct spi_device_id mpr_spi_id[] = {
+ { "mprls0025pa" },
+ {}
+};
+MODULE_DEVICE_TABLE(spi, mpr_spi_id);
+
+static struct spi_driver mpr_spi_driver = {
+ .driver = {
+ .name = "mprls0025pa",
+ .of_match_table = mpr_spi_match,
+ },
+ .probe = mpr_spi_probe,
+ .id_table = mpr_spi_id,
+};
+module_spi_driver(mpr_spi_driver);
+
+MODULE_AUTHOR("Petre Rodan <petre.rodan@subdimension.ro>");
+MODULE_DESCRIPTION("Honeywell MPR pressure sensor spi driver");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_HONEYWELL_MPRLS0025PA);
diff --git a/drivers/iio/pressure/st_pressure_i2c.c b/drivers/iio/pressure/st_pressure_i2c.c
index 5101552e3f3849..389523d6ae3210 100644
--- a/drivers/iio/pressure/st_pressure_i2c.c
+++ b/drivers/iio/pressure/st_pressure_i2c.c
@@ -7,7 +7,6 @@
* Denis Ciocca <denis.ciocca@st.com>
*/
-#include <linux/acpi.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
@@ -55,13 +54,11 @@ static const struct of_device_id st_press_of_match[] = {
};
MODULE_DEVICE_TABLE(of, st_press_of_match);
-#ifdef CONFIG_ACPI
static const struct acpi_device_id st_press_acpi_match[] = {
{"SNO9210", LPS22HB},
{ },
};
MODULE_DEVICE_TABLE(acpi, st_press_acpi_match);
-#endif
static const struct i2c_device_id st_press_id_table[] = {
{ LPS001WP_PRESS_DEV_NAME, LPS001WP },
@@ -114,7 +111,7 @@ static struct i2c_driver st_press_driver = {
.driver = {
.name = "st-press-i2c",
.of_match_table = st_press_of_match,
- .acpi_match_table = ACPI_PTR(st_press_acpi_match),
+ .acpi_match_table = st_press_acpi_match,
},
.probe = st_press_i2c_probe,
.id_table = st_press_id_table,
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-24 13:09:52 +0000