7 files changed, 952 insertions, 246 deletions

diff --git a/drivers/iio/pressure/Kconfig b/drivers/iio/pressure/Kconfig
index c9453389e4f7..02b97e89de50 100644
--- a/drivers/iio/pressure/Kconfig
+++ b/drivers/iio/pressure/Kconfig
@@ -17,14 +17,14 @@ config ABP060MG
 	  will be called abp060mg.
 
 config BMP280
-	tristate "Bosch Sensortec BMP180/BMP280/BMP380 pressure sensor I2C driver"
+	tristate "Bosch Sensortec BMP180/BMP280/BMP380/BMP580 pressure sensor driver"
 	depends on (I2C || SPI_MASTER)
 	select REGMAP
 	select BMP280_I2C if (I2C)
 	select BMP280_SPI if (SPI_MASTER)
 	help
-	  Say yes here to build support for Bosch Sensortec BMP180, BMP280 and
-	  BMP380 pressure and temperature sensors. Also supports the BME280 with
+	  Say yes here to build support for Bosch Sensortec BMP180, BMP280, BMP380
+	  and BMP580 pressure and temperature sensors. Also supports the BME280 with
 	  an additional humidity sensor channel.
 
 	  To compile this driver as a module, choose M here: the core module
diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c
index c0aff78489b4..6089f3f9d8f4 100644
--- a/drivers/iio/pressure/bmp280-core.c
+++ b/drivers/iio/pressure/bmp280-core.c
@@ -13,6 +13,7 @@
  * https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bmp280-ds001.pdf
  * https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bme280-ds002.pdf
  * https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bmp388-ds001.pdf
+ * https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bmp581-ds004.pdf
  *
  * Notice:
  * The link to the bmp180 datasheet points to an outdated version missing these changes:
@@ -27,6 +28,7 @@
 #include <linux/bitfield.h>
 #include <linux/device.h>
 #include <linux/module.h>
+#include <linux/nvmem-provider.h>
 #include <linux/regmap.h>
 #include <linux/delay.h>
 #include <linux/iio/iio.h>
@@ -49,65 +51,6 @@
  */
 enum { AC1, AC2, AC3, AC4, AC5, AC6, B1, B2, MB, MC, MD };
 
-struct bmp180_calib {
-	s16 AC1;
-	s16 AC2;
-	s16 AC3;
-	u16 AC4;
-	u16 AC5;
-	u16 AC6;
-	s16 B1;
-	s16 B2;
-	s16 MB;
-	s16 MC;
-	s16 MD;
-};
-
-/* See datasheet Section 4.2.2. */
-struct bmp280_calib {
-	u16 T1;
-	s16 T2;
-	s16 T3;
-	u16 P1;
-	s16 P2;
-	s16 P3;
-	s16 P4;
-	s16 P5;
-	s16 P6;
-	s16 P7;
-	s16 P8;
-	s16 P9;
-	u8  H1;
-	s16 H2;
-	u8  H3;
-	s16 H4;
-	s16 H5;
-	s8  H6;
-};
-
-/* See datasheet Section 3.11.1. */
-struct bmp380_calib {
-	u16 T1;
-	u16 T2;
-	s8  T3;
-	s16 P1;
-	s16 P2;
-	s8  P3;
-	s8  P4;
-	u16 P5;
-	u16 P6;
-	s8  P7;
-	s8  P8;
-	s16 P9;
-	s8  P10;
-	s8  P11;
-};
-
-static const char *const bmp280_supply_names[] = {
-	"vddd", "vdda"
-};
-
-#define BMP280_NUM_SUPPLIES ARRAY_SIZE(bmp280_supply_names)
 
 enum bmp380_odr {
 	BMP380_ODR_200HZ,
@@ -130,92 +73,39 @@ enum bmp380_odr {
 	BMP380_ODR_0_0015HZ,
 };
 
-struct bmp280_data {
-	struct device *dev;
-	struct mutex lock;
-	struct regmap *regmap;
-	struct completion done;
-	bool use_eoc;
-	const struct bmp280_chip_info *chip_info;
-	union {
-		struct bmp180_calib bmp180;
-		struct bmp280_calib bmp280;
-		struct bmp380_calib bmp380;
-	} calib;
-	struct regulator_bulk_data supplies[BMP280_NUM_SUPPLIES];
-	unsigned int start_up_time; /* in microseconds */
-
-	/* log of base 2 of oversampling rate */
-	u8 oversampling_press;
-	u8 oversampling_temp;
-	u8 oversampling_humid;
-	u8 iir_filter_coeff;
-
-	/*
-	 * BMP380 devices introduce sampling frequency configuration. See
-	 * datasheet sections 3.3.3. and 4.3.19 for more details.
-	 *
-	 * BMx280 devices allowed indirect configuration of sampling frequency
-	 * changing the t_standby duration between measurements, as detailed on
-	 * section 3.6.3 of the datasheet.
-	 */
-	int sampling_freq;
-
-	/*
-	 * Carryover value from temperature conversion, used in pressure
-	 * calculation.
-	 */
-	s32 t_fine;
-
-	/*
-	 * DMA (thus cache coherency maintenance) may require the
-	 * transfer buffers to live in their own cache lines.
-	 */
-	union {
-		/* Sensor data buffer */
-		u8 buf[3];
-		/* Calibration data buffers */
-		__le16 bmp280_cal_buf[BMP280_CONTIGUOUS_CALIB_REGS / 2];
-		__be16 bmp180_cal_buf[BMP180_REG_CALIB_COUNT / 2];
-		u8 bmp380_cal_buf[BMP380_CALIB_REG_COUNT];
-		/* Miscellaneous, endianess-aware data buffers */
-		__le16 le16;
-		__be16 be16;
-	} __aligned(IIO_DMA_MINALIGN);
-};
-
-struct bmp280_chip_info {
-	unsigned int id_reg;
-
-	const struct iio_chan_spec *channels;
-	int num_channels;
-	unsigned int start_up_time;
-
-	const int *oversampling_temp_avail;
-	int num_oversampling_temp_avail;
-	int oversampling_temp_default;
-
-	const int *oversampling_press_avail;
-	int num_oversampling_press_avail;
-	int oversampling_press_default;
-
-	const int *oversampling_humid_avail;
-	int num_oversampling_humid_avail;
-	int oversampling_humid_default;
-
-	const int *iir_filter_coeffs_avail;
-	int num_iir_filter_coeffs_avail;
-	int iir_filter_coeff_default;
-
-	const int (*sampling_freq_avail)[2];
-	int num_sampling_freq_avail;
-	int sampling_freq_default;
-
-	int (*chip_config)(struct bmp280_data *);
-	int (*read_temp)(struct bmp280_data *, int *);
-	int (*read_press)(struct bmp280_data *, int *, int *);
-	int (*read_humid)(struct bmp280_data *, int *, int *);
-	int (*read_calib)(struct bmp280_data *);
+enum bmp580_odr {
+	BMP580_ODR_240HZ,
+	BMP580_ODR_218HZ,
+	BMP580_ODR_199HZ,
+	BMP580_ODR_179HZ,
+	BMP580_ODR_160HZ,
+	BMP580_ODR_149HZ,
+	BMP580_ODR_140HZ,
+	BMP580_ODR_129HZ,
+	BMP580_ODR_120HZ,
+	BMP580_ODR_110HZ,
+	BMP580_ODR_100HZ,
+	BMP580_ODR_89HZ,
+	BMP580_ODR_80HZ,
+	BMP580_ODR_70HZ,
+	BMP580_ODR_60HZ,
+	BMP580_ODR_50HZ,
+	BMP580_ODR_45HZ,
+	BMP580_ODR_40HZ,
+	BMP580_ODR_35HZ,
+	BMP580_ODR_30HZ,
+	BMP580_ODR_25HZ,
+	BMP580_ODR_20HZ,
+	BMP580_ODR_15HZ,
+	BMP580_ODR_10HZ,
+	BMP580_ODR_5HZ,
+	BMP580_ODR_4HZ,
+	BMP580_ODR_3HZ,
+	BMP580_ODR_2HZ,
+	BMP580_ODR_1HZ,
+	BMP580_ODR_0_5HZ,
+	BMP580_ODR_0_25HZ,
+	BMP580_ODR_0_125HZ,
 };
 
 /*
@@ -473,7 +363,7 @@ static u32 bmp280_compensate_press(struct bmp280_data *data,
 }
 
 static int bmp280_read_temp(struct bmp280_data *data,
-			    int *val)
+			    int *val, int *val2)
 {
 	s32 adc_temp, comp_temp;
 	int ret;
@@ -513,7 +403,7 @@ static int bmp280_read_press(struct bmp280_data *data,
 	int ret;
 
 	/* Read and compensate temperature so we get a reading of t_fine. */
-	ret = bmp280_read_temp(data, NULL);
+	ret = bmp280_read_temp(data, NULL, NULL);
 	if (ret < 0)
 		return ret;
 
@@ -545,7 +435,7 @@ static int bmp280_read_humid(struct bmp280_data *data, int *val, int *val2)
 	int ret;
 
 	/* Read and compensate temperature so we get a reading of t_fine. */
-	ret = bmp280_read_temp(data, NULL);
+	ret = bmp280_read_temp(data, NULL, NULL);
 	if (ret < 0)
 		return ret;
 
@@ -589,7 +479,7 @@ static int bmp280_read_raw(struct iio_dev *indio_dev,
 			ret = data->chip_info->read_press(data, val, val2);
 			break;
 		case IIO_TEMP:
-			ret = data->chip_info->read_temp(data, val);
+			ret = data->chip_info->read_temp(data, val, val2);
 			break;
 		default:
 			ret = -EINVAL;
@@ -905,8 +795,10 @@ static int bmp280_chip_config(struct bmp280_data *data)
 
 static const int bmp280_oversampling_avail[] = { 1, 2, 4, 8, 16 };
 
-static const struct bmp280_chip_info bmp280_chip_info = {
+const struct bmp280_chip_info bmp280_chip_info = {
 	.id_reg = BMP280_REG_ID,
+	.chip_id = BMP280_CHIP_ID,
+	.regmap_config = &bmp280_regmap_config,
 	.start_up_time = 2000,
 	.channels = bmp280_channels,
 	.num_channels = 2,
@@ -934,6 +826,7 @@ static const struct bmp280_chip_info bmp280_chip_info = {
 	.read_press = bmp280_read_press,
 	.read_calib = bmp280_read_calib,
 };
+EXPORT_SYMBOL_NS(bmp280_chip_info, IIO_BMP280);
 
 static int bme280_chip_config(struct bmp280_data *data)
 {
@@ -953,8 +846,10 @@ static int bme280_chip_config(struct bmp280_data *data)
 	return bmp280_chip_config(data);
 }
 
-static const struct bmp280_chip_info bme280_chip_info = {
+const struct bmp280_chip_info bme280_chip_info = {
 	.id_reg = BMP280_REG_ID,
+	.chip_id = BME280_CHIP_ID,
+	.regmap_config = &bmp280_regmap_config,
 	.start_up_time = 2000,
 	.channels = bmp280_channels,
 	.num_channels = 3,
@@ -977,6 +872,7 @@ static const struct bmp280_chip_info bme280_chip_info = {
 	.read_humid = bmp280_read_humid,
 	.read_calib = bme280_read_calib,
 };
+EXPORT_SYMBOL_NS(bme280_chip_info, IIO_BMP280);
 
 /*
  * Helper function to send a command to BMP3XX sensors.
@@ -1095,7 +991,7 @@ static u32 bmp380_compensate_press(struct bmp280_data *data, u32 adc_press)
 	return comp_press;
 }
 
-static int bmp380_read_temp(struct bmp280_data *data, int *val)
+static int bmp380_read_temp(struct bmp280_data *data, int *val, int *val2)
 {
 	s32 comp_temp;
 	u32 adc_temp;
@@ -1135,7 +1031,7 @@ static int bmp380_read_press(struct bmp280_data *data, int *val, int *val2)
 	int ret;
 
 	/* Read and compensate for temperature so we get a reading of t_fine */
-	ret = bmp380_read_temp(data, NULL);
+	ret = bmp380_read_temp(data, NULL, NULL);
 	if (ret)
 		return ret;
 
@@ -1217,6 +1113,12 @@ static const int bmp380_odr_table[][2] = {
 	[BMP380_ODR_0_0015HZ]	= {0, 1526},
 };
 
+static int bmp380_preinit(struct bmp280_data *data)
+{
+	/* BMP3xx requires soft-reset as part of initialization */
+	return bmp380_cmd(data, BMP380_CMD_SOFT_RESET);
+}
+
 static int bmp380_chip_config(struct bmp280_data *data)
 {
 	bool change = false, aux;
@@ -1319,8 +1221,10 @@ static int bmp380_chip_config(struct bmp280_data *data)
 static const int bmp380_oversampling_avail[] = { 1, 2, 4, 8, 16, 32 };
 static const int bmp380_iir_filter_coeffs_avail[] = { 1, 2, 4, 8, 16, 32, 64, 128};
 
-static const struct bmp280_chip_info bmp380_chip_info = {
+const struct bmp280_chip_info bmp380_chip_info = {
 	.id_reg = BMP380_REG_ID,
+	.chip_id = BMP380_CHIP_ID,
+	.regmap_config = &bmp380_regmap_config,
 	.start_up_time = 2000,
 	.channels = bmp380_channels,
 	.num_channels = 2,
@@ -1345,7 +1249,508 @@ static const struct bmp280_chip_info bmp380_chip_info = {
 	.read_temp = bmp380_read_temp,
 	.read_press = bmp380_read_press,
 	.read_calib = bmp380_read_calib,
+	.preinit = bmp380_preinit,
+};
+EXPORT_SYMBOL_NS(bmp380_chip_info, IIO_BMP280);
+
+static int bmp580_soft_reset(struct bmp280_data *data)
+{
+	unsigned int reg;
+	int ret;
+
+	ret = regmap_write(data->regmap, BMP580_REG_CMD, BMP580_CMD_SOFT_RESET);
+	if (ret) {
+		dev_err(data->dev, "failed to send reset command to device\n");
+		return ret;
+	}
+	usleep_range(2000, 2500);
+
+	/* Dummy read of chip_id */
+	ret = regmap_read(data->regmap, BMP580_REG_CHIP_ID, &reg);
+	if (ret) {
+		dev_err(data->dev, "failed to reestablish comms after reset\n");
+		return ret;
+	}
+
+	ret = regmap_read(data->regmap, BMP580_REG_INT_STATUS, &reg);
+	if (ret) {
+		dev_err(data->dev, "error reading interrupt status register\n");
+		return ret;
+	}
+	if (!(reg & BMP580_INT_STATUS_POR_MASK)) {
+		dev_err(data->dev, "error resetting sensor\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/**
+ * bmp580_nvm_operation() - Helper function to commit NVM memory operations
+ * @data: sensor data struct
+ * @is_write: flag to signal write operation
+ */
+static int bmp580_nvm_operation(struct bmp280_data *data, bool is_write)
+{
+	unsigned long timeout, poll;
+	unsigned int reg;
+	int ret;
+
+	/* Check NVM ready flag */
+	ret = regmap_read(data->regmap, BMP580_REG_STATUS, &reg);
+	if (ret) {
+		dev_err(data->dev, "failed to check nvm status\n");
+		return ret;
+	}
+	if (!(reg & BMP580_STATUS_NVM_RDY_MASK)) {
+		dev_err(data->dev, "sensor's nvm is not ready\n");
+		return -EIO;
+	}
+
+	/* Start NVM operation sequence */
+	ret = regmap_write(data->regmap, BMP580_REG_CMD, BMP580_CMD_NVM_OP_SEQ_0);
+	if (ret) {
+		dev_err(data->dev, "failed to send nvm operation's first sequence\n");
+		return ret;
+	}
+	if (is_write) {
+		/* Send NVM write sequence */
+		ret = regmap_write(data->regmap, BMP580_REG_CMD,
+				   BMP580_CMD_NVM_WRITE_SEQ_1);
+		if (ret) {
+			dev_err(data->dev, "failed to send nvm write sequence\n");
+			return ret;
+		}
+		/* Datasheet says on 4.8.1.2 it takes approximately 10ms */
+		poll = 2000;
+		timeout = 12000;
+	} else {
+		/* Send NVM read sequence */
+		ret = regmap_write(data->regmap, BMP580_REG_CMD,
+				   BMP580_CMD_NVM_READ_SEQ_1);
+		if (ret) {
+			dev_err(data->dev, "failed to send nvm read sequence\n");
+			return ret;
+		}
+		/* Datasheet says on 4.8.1.1 it takes approximately 200us */
+		poll = 50;
+		timeout = 400;
+	}
+	if (ret) {
+		dev_err(data->dev, "failed to write command sequence\n");
+		return -EIO;
+	}
+
+	/* Wait until NVM is ready again */
+	ret = regmap_read_poll_timeout(data->regmap, BMP580_REG_STATUS, reg,
+				       (reg & BMP580_STATUS_NVM_RDY_MASK),
+				       poll, timeout);
+	if (ret) {
+		dev_err(data->dev, "error checking nvm operation status\n");
+		return ret;
+	}
+
+	/* Check NVM error flags */
+	if ((reg & BMP580_STATUS_NVM_ERR_MASK) || (reg & BMP580_STATUS_NVM_CMD_ERR_MASK)) {
+		dev_err(data->dev, "error processing nvm operation\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+
+/*
+ * Contrary to previous sensors families, compensation algorithm is builtin.
+ * We are only required to read the register raw data and adapt the ranges
+ * for what is expected on IIO ABI.
+ */
+
+static int bmp580_read_temp(struct bmp280_data *data, int *val, int *val2)
+{
+	s32 raw_temp;
+	int ret;
+
+	ret = regmap_bulk_read(data->regmap, BMP580_REG_TEMP_XLSB, data->buf,
+			       sizeof(data->buf));
+	if (ret) {
+		dev_err(data->dev, "failed to read temperature\n");
+		return ret;
+	}
+
+	raw_temp = get_unaligned_le24(data->buf);
+	if (raw_temp == BMP580_TEMP_SKIPPED) {
+		dev_err(data->dev, "reading temperature skipped\n");
+		return -EIO;
+	}
+
+	/*
+	 * Temperature is returned in Celsius degrees in fractional
+	 * form down 2^16. We reescale by x1000 to return milli Celsius
+	 * to respect IIO ABI.
+	 */
+	*val = raw_temp * 1000;
+	*val2 = 16;
+	return IIO_VAL_FRACTIONAL_LOG2;
+}
+
+static int bmp580_read_press(struct bmp280_data *data, int *val, int *val2)
+{
+	u32 raw_press;
+	int ret;
+
+	ret = regmap_bulk_read(data->regmap, BMP580_REG_PRESS_XLSB, data->buf,
+			       sizeof(data->buf));
+	if (ret) {
+		dev_err(data->dev, "failed to read pressure\n");
+		return ret;
+	}
+
+	raw_press = get_unaligned_le24(data->buf);
+	if (raw_press == BMP580_PRESS_SKIPPED) {
+		dev_err(data->dev, "reading pressure skipped\n");
+		return -EIO;
+	}
+	/*
+	 * Pressure is returned in Pascals in fractional form down 2^16.
+	 * We reescale /1000 to convert to kilopascal to respect IIO ABI.
+	 */
+	*val = raw_press;
+	*val2 = 64000; /* 2^6 * 1000 */
+	return IIO_VAL_FRACTIONAL;
+}
+
+static const int bmp580_odr_table[][2] = {
+	[BMP580_ODR_240HZ] =	{240, 0},
+	[BMP580_ODR_218HZ] =	{218, 0},
+	[BMP580_ODR_199HZ] =	{199, 0},
+	[BMP580_ODR_179HZ] =	{179, 0},
+	[BMP580_ODR_160HZ] =	{160, 0},
+	[BMP580_ODR_149HZ] =	{149, 0},
+	[BMP580_ODR_140HZ] =	{140, 0},
+	[BMP580_ODR_129HZ] =	{129, 0},
+	[BMP580_ODR_120HZ] =	{120, 0},
+	[BMP580_ODR_110HZ] =	{110, 0},
+	[BMP580_ODR_100HZ] =	{100, 0},
+	[BMP580_ODR_89HZ] =	{89, 0},
+	[BMP580_ODR_80HZ] =	{80, 0},
+	[BMP580_ODR_70HZ] =	{70, 0},
+	[BMP580_ODR_60HZ] =	{60, 0},
+	[BMP580_ODR_50HZ] =	{50, 0},
+	[BMP580_ODR_45HZ] =	{45, 0},
+	[BMP580_ODR_40HZ] =	{40, 0},
+	[BMP580_ODR_35HZ] =	{35, 0},
+	[BMP580_ODR_30HZ] =	{30, 0},
+	[BMP580_ODR_25HZ] =	{25, 0},
+	[BMP580_ODR_20HZ] =	{20, 0},
+	[BMP580_ODR_15HZ] =	{15, 0},
+	[BMP580_ODR_10HZ] =	{10, 0},
+	[BMP580_ODR_5HZ] =	{5, 0},
+	[BMP580_ODR_4HZ] =	{4, 0},
+	[BMP580_ODR_3HZ] =	{3, 0},
+	[BMP580_ODR_2HZ] =	{2, 0},
+	[BMP580_ODR_1HZ] =	{1, 0},
+	[BMP580_ODR_0_5HZ] =	{0, 500000},
+	[BMP580_ODR_0_25HZ] =	{0, 250000},
+	[BMP580_ODR_0_125HZ] =	{0, 125000},
+};
+
+static const int bmp580_nvmem_addrs[] = { 0x20, 0x21, 0x22 };
+
+static int bmp580_nvmem_read(void *priv, unsigned int offset, void *val,
+			     size_t bytes)
+{
+	struct bmp280_data *data = priv;
+	u16 *dst = val;
+	int ret, addr;
+
+	pm_runtime_get_sync(data->dev);
+	mutex_lock(&data->lock);
+
+	/* Set sensor in standby mode */
+	ret = regmap_update_bits(data->regmap, BMP580_REG_ODR_CONFIG,
+				 BMP580_MODE_MASK | BMP580_ODR_DEEPSLEEP_DIS,
+				 BMP580_ODR_DEEPSLEEP_DIS |
+				 FIELD_PREP(BMP580_MODE_MASK, BMP580_MODE_SLEEP));
+	if (ret) {
+		dev_err(data->dev, "failed to change sensor to standby mode\n");
+		goto exit;
+	}
+	/* Wait standby transition time */
+	usleep_range(2500, 3000);
+
+	while (bytes >= sizeof(*dst)) {
+		addr = bmp580_nvmem_addrs[offset / sizeof(*dst)];
+
+		ret = regmap_write(data->regmap, BMP580_REG_NVM_ADDR,
+				   FIELD_PREP(BMP580_NVM_ROW_ADDR_MASK, addr));
+		if (ret) {
+			dev_err(data->dev, "error writing nvm address\n");
+			goto exit;
+		}
+
+		ret = bmp580_nvm_operation(data, false);
+		if (ret)
+			goto exit;
+
+		ret = regmap_bulk_read(data->regmap, BMP580_REG_NVM_DATA_LSB, &data->le16,
+				       sizeof(data->le16));
+		if (ret) {
+			dev_err(data->dev, "error reading nvm data regs\n");
+			goto exit;
+		}
+
+		*dst++ = le16_to_cpu(data->le16);
+		bytes -= sizeof(*dst);
+		offset += sizeof(*dst);
+	}
+exit:
+	/* Restore chip config */
+	data->chip_info->chip_config(data);
+	mutex_unlock(&data->lock);
+	pm_runtime_mark_last_busy(data->dev);
+	pm_runtime_put_autosuspend(data->dev);
+	return ret;
+}
+
+static int bmp580_nvmem_write(void *priv, unsigned int offset, void *val,
+			      size_t bytes)
+{
+	struct bmp280_data *data = priv;
+	u16 *buf = val;
+	int ret, addr;
+
+	pm_runtime_get_sync(data->dev);
+	mutex_lock(&data->lock);
+
+	/* Set sensor in standby mode */
+	ret = regmap_update_bits(data->regmap, BMP580_REG_ODR_CONFIG,
+				 BMP580_MODE_MASK | BMP580_ODR_DEEPSLEEP_DIS,
+				 BMP580_ODR_DEEPSLEEP_DIS |
+				 FIELD_PREP(BMP580_MODE_MASK, BMP580_MODE_SLEEP));
+	if (ret) {
+		dev_err(data->dev, "failed to change sensor to standby mode\n");
+		goto exit;
+	}
+	/* Wait standby transition time */
+	usleep_range(2500, 3000);
+
+	while (bytes >= sizeof(*buf)) {
+		addr = bmp580_nvmem_addrs[offset / sizeof(*buf)];
+
+		ret = regmap_write(data->regmap, BMP580_REG_NVM_ADDR, BMP580_NVM_PROG_EN |
+				   FIELD_PREP(BMP580_NVM_ROW_ADDR_MASK, addr));
+		if (ret) {
+			dev_err(data->dev, "error writing nvm address\n");
+			goto exit;
+		}
+		data->le16 = cpu_to_le16(*buf++);
+
+		ret = regmap_bulk_write(data->regmap, BMP580_REG_NVM_DATA_LSB, &data->le16,
+					sizeof(data->le16));
+		if (ret) {
+			dev_err(data->dev, "error writing LSB NVM data regs\n");
+			goto exit;
+		}
+
+		ret = bmp580_nvm_operation(data, true);
+		if (ret)
+			goto exit;
+
+		/* Disable programming mode bit */
+		ret = regmap_update_bits(data->regmap, BMP580_REG_NVM_ADDR,
+					 BMP580_NVM_PROG_EN, 0);
+		if (ret) {
+			dev_err(data->dev, "error resetting nvm write\n");
+			goto exit;
+		}
+
+		bytes -= sizeof(*buf);
+		offset += sizeof(*buf);
+	}
+exit:
+	/* Restore chip config */
+	data->chip_info->chip_config(data);
+	mutex_unlock(&data->lock);
+	pm_runtime_mark_last_busy(data->dev);
+	pm_runtime_put_autosuspend(data->dev);
+	return ret;
+}
+
+static int bmp580_preinit(struct bmp280_data *data)
+{
+	struct nvmem_config config = {
+		.dev = data->dev,
+		.priv = data,
+		.name = "bmp580_nvmem",
+		.word_size = sizeof(u16),
+		.stride = sizeof(u16),
+		.size = 3 * sizeof(u16),
+		.reg_read = bmp580_nvmem_read,
+		.reg_write = bmp580_nvmem_write,
+	};
+	unsigned int reg;
+	int ret;
+
+	/* Issue soft-reset command */
+	ret = bmp580_soft_reset(data);
+	if (ret)
+		return ret;
+
+	/* Post powerup sequence */
+	ret = regmap_read(data->regmap, BMP580_REG_CHIP_ID, &reg);
+	if (ret)
+		return ret;
+
+	/* Print warn message if we don't know the chip id */
+	if (reg != BMP580_CHIP_ID && reg != BMP580_CHIP_ID_ALT)
+		dev_warn(data->dev, "preinit: unexpected chip_id\n");
+
+	ret = regmap_read(data->regmap, BMP580_REG_STATUS, &reg);
+	if (ret)
+		return ret;
+
+	/* Check nvm status */
+	if (!(reg & BMP580_STATUS_NVM_RDY_MASK) || (reg & BMP580_STATUS_NVM_ERR_MASK)) {
+		dev_err(data->dev, "preinit: nvm error on powerup sequence\n");
+		return -EIO;
+	}
+
+	/* Register nvmem device */
+	return PTR_ERR_OR_ZERO(devm_nvmem_register(config.dev, &config));
+}
+
+static int bmp580_chip_config(struct bmp280_data *data)
+{
+	bool change = false, aux;
+	unsigned int tmp;
+	u8 reg_val;
+	int ret;
+
+	/* Sets sensor in standby mode */
+	ret = regmap_update_bits(data->regmap, BMP580_REG_ODR_CONFIG,
+				 BMP580_MODE_MASK | BMP580_ODR_DEEPSLEEP_DIS,
+				 BMP580_ODR_DEEPSLEEP_DIS |
+				 FIELD_PREP(BMP580_MODE_MASK, BMP580_MODE_SLEEP));
+	if (ret) {
+		dev_err(data->dev, "failed to change sensor to standby mode\n");
+		return ret;
+	}
+	/* From datasheet's table 4: electrical characteristics */
+	usleep_range(2500, 3000);
+
+	/* Set default DSP mode settings */
+	reg_val = FIELD_PREP(BMP580_DSP_COMP_MASK, BMP580_DSP_PRESS_TEMP_COMP_EN) |
+		  BMP580_DSP_SHDW_IIR_TEMP_EN | BMP580_DSP_SHDW_IIR_PRESS_EN;
+
+	ret = regmap_update_bits(data->regmap, BMP580_REG_DSP_CONFIG,
+				 BMP580_DSP_COMP_MASK |
+				 BMP580_DSP_SHDW_IIR_TEMP_EN |
+				 BMP580_DSP_SHDW_IIR_PRESS_EN, reg_val);
+
+	/* Configure oversampling */
+	reg_val = FIELD_PREP(BMP580_OSR_TEMP_MASK, data->oversampling_temp) |
+		  FIELD_PREP(BMP580_OSR_PRESS_MASK, data->oversampling_press) |
+		  BMP580_OSR_PRESS_EN;
+
+	ret = regmap_update_bits_check(data->regmap, BMP580_REG_OSR_CONFIG,
+				       BMP580_OSR_TEMP_MASK | BMP580_OSR_PRESS_MASK |
+				       BMP580_OSR_PRESS_EN,
+				       reg_val, &aux);
+	if (ret) {
+		dev_err(data->dev, "failed to write oversampling register\n");
+		return ret;
+	}
+	change = change || aux;
+
+	/* Configure output data rate */
+	ret = regmap_update_bits_check(data->regmap, BMP580_REG_ODR_CONFIG, BMP580_ODR_MASK,
+				       FIELD_PREP(BMP580_ODR_MASK, data->sampling_freq),
+				       &aux);
+	if (ret) {
+		dev_err(data->dev, "failed to write ODR configuration register\n");
+		return ret;
+	}
+	change = change || aux;
+
+	/* Set filter data */
+	reg_val = FIELD_PREP(BMP580_DSP_IIR_PRESS_MASK, data->iir_filter_coeff) |
+		  FIELD_PREP(BMP580_DSP_IIR_TEMP_MASK, data->iir_filter_coeff);
+
+	ret = regmap_update_bits_check(data->regmap, BMP580_REG_DSP_IIR,
+				       BMP580_DSP_IIR_PRESS_MASK |
+				       BMP580_DSP_IIR_TEMP_MASK,
+				       reg_val, &aux);
+	if (ret) {
+		dev_err(data->dev, "failed to write config register\n");
+		return ret;
+	}
+	change = change || aux;
+
+	/* Restore sensor to normal operation mode */
+	ret = regmap_write_bits(data->regmap, BMP580_REG_ODR_CONFIG,
+				BMP580_MODE_MASK,
+				FIELD_PREP(BMP580_MODE_MASK, BMP580_MODE_NORMAL));
+	if (ret) {
+		dev_err(data->dev, "failed to set normal mode\n");
+		return ret;
+	}
+	/* From datasheet's table 4: electrical characteristics */
+	usleep_range(3000, 3500);
+
+	if (change) {
+		/*
+		 * Check if ODR and OSR settings are valid or we are
+		 * operating in a degraded mode.
+		 */
+		ret = regmap_read(data->regmap, BMP580_REG_EFF_OSR, &tmp);
+		if (ret) {
+			dev_err(data->dev, "error reading effective OSR register\n");
+			return ret;
+		}
+		if (!(tmp & BMP580_EFF_OSR_VALID_ODR)) {
+			dev_warn(data->dev, "OSR and ODR incompatible settings detected\n");
+			/* Set current OSR settings from data on effective OSR */
+			data->oversampling_temp = FIELD_GET(BMP580_EFF_OSR_TEMP_MASK, tmp);
+			data->oversampling_press = FIELD_GET(BMP580_EFF_OSR_PRESS_MASK, tmp);
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
+static const int bmp580_oversampling_avail[] = { 1, 2, 4, 8, 16, 32, 64, 128 };
+
+const struct bmp280_chip_info bmp580_chip_info = {
+	.id_reg = BMP580_REG_CHIP_ID,
+	.chip_id = BMP580_CHIP_ID,
+	.regmap_config = &bmp580_regmap_config,
+	.start_up_time = 2000,
+	.channels = bmp380_channels,
+	.num_channels = 2,
+
+	.oversampling_temp_avail = bmp580_oversampling_avail,
+	.num_oversampling_temp_avail = ARRAY_SIZE(bmp580_oversampling_avail),
+	.oversampling_temp_default = ilog2(1),
+
+	.oversampling_press_avail = bmp580_oversampling_avail,
+	.num_oversampling_press_avail = ARRAY_SIZE(bmp580_oversampling_avail),
+	.oversampling_press_default = ilog2(4),
+
+	.sampling_freq_avail = bmp580_odr_table,
+	.num_sampling_freq_avail = ARRAY_SIZE(bmp580_odr_table) * 2,
+	.sampling_freq_default = BMP580_ODR_50HZ,
+
+	.iir_filter_coeffs_avail = bmp380_iir_filter_coeffs_avail,
+	.num_iir_filter_coeffs_avail = ARRAY_SIZE(bmp380_iir_filter_coeffs_avail),
+	.iir_filter_coeff_default = 2,
+
+	.chip_config = bmp580_chip_config,
+	.read_temp = bmp580_read_temp,
+	.read_press = bmp580_read_press,
+	.preinit = bmp580_preinit,
 };
+EXPORT_SYMBOL_NS(bmp580_chip_info, IIO_BMP280);
 
 static int bmp180_measure(struct bmp280_data *data, u8 ctrl_meas)
 {
@@ -1467,7 +1872,7 @@ static s32 bmp180_compensate_temp(struct bmp280_data *data, s32 adc_temp)
 	return (data->t_fine + 8) >> 4;
 }
 
-static int bmp180_read_temp(struct bmp280_data *data, int *val)
+static int bmp180_read_temp(struct bmp280_data *data, int *val, int *val2)
 {
 	s32 adc_temp, comp_temp;
 	int ret;
@@ -1555,7 +1960,7 @@ static int bmp180_read_press(struct bmp280_data *data,
 	int ret;
 
 	/* Read and compensate temperature so we get a reading of t_fine. */
-	ret = bmp180_read_temp(data, NULL);
+	ret = bmp180_read_temp(data, NULL, NULL);
 	if (ret)
 		return ret;
 
@@ -1579,8 +1984,10 @@ static int bmp180_chip_config(struct bmp280_data *data)
 static const int bmp180_oversampling_temp_avail[] = { 1 };
 static const int bmp180_oversampling_press_avail[] = { 1, 2, 4, 8 };
 
-static const struct bmp280_chip_info bmp180_chip_info = {
+const struct bmp280_chip_info bmp180_chip_info = {
 	.id_reg = BMP280_REG_ID,
+	.chip_id = BMP180_CHIP_ID,
+	.regmap_config = &bmp180_regmap_config,
 	.start_up_time = 2000,
 	.channels = bmp280_channels,
 	.num_channels = 2,
@@ -1600,6 +2007,7 @@ static const struct bmp280_chip_info bmp180_chip_info = {
 	.read_press = bmp180_read_press,
 	.read_calib = bmp180_read_calib,
 };
+EXPORT_SYMBOL_NS(bmp180_chip_info, IIO_BMP280);
 
 static irqreturn_t bmp085_eoc_irq(int irq, void *d)
 {
@@ -1661,11 +2069,10 @@ static void bmp280_regulators_disable(void *data)
 
 int bmp280_common_probe(struct device *dev,
 			struct regmap *regmap,
-			unsigned int chip,
+			const struct bmp280_chip_info *chip_info,
 			const char *name,
 			int irq)
 {
-	const struct bmp280_chip_info *chip_info;
 	struct iio_dev *indio_dev;
 	struct bmp280_data *data;
 	struct gpio_desc *gpiod;
@@ -1684,22 +2091,6 @@ int bmp280_common_probe(struct device *dev,
 	indio_dev->info = &bmp280_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	switch (chip) {
-	case BMP180_CHIP_ID:
-		chip_info = &bmp180_chip_info;
-		break;
-	case BMP280_CHIP_ID:
-		chip_info = &bmp280_chip_info;
-		break;
-	case BME280_CHIP_ID:
-		chip_info = &bme280_chip_info;
-		break;
-	case BMP380_CHIP_ID:
-		chip_info = &bmp380_chip_info;
-		break;
-	default:
-		return -EINVAL;
-	}
 	data->chip_info = chip_info;
 
 	/* Apply initial values from chip info structure */
@@ -1751,17 +2142,17 @@ int bmp280_common_probe(struct device *dev,
 	ret = regmap_read(regmap, data->chip_info->id_reg, &chip_id);
 	if (ret < 0)
 		return ret;
-	if (chip_id != chip) {
+	if (chip_id != data->chip_info->chip_id) {
 		dev_err(dev, "bad chip id: expected %x got %x\n",
-			chip, chip_id);
+			data->chip_info->chip_id, chip_id);
 		return -EINVAL;
 	}
 
-	/* BMP3xx requires soft-reset as part of initialization */
-	if (chip_id == BMP380_CHIP_ID) {
-		ret = bmp380_cmd(data, BMP380_CMD_SOFT_RESET);
-		if (ret < 0)
-			return ret;
+	if (data->chip_info->preinit) {
+		ret = data->chip_info->preinit(data);
+		if (ret)
+			return dev_err_probe(data->dev, ret,
+					     "error running preinit tasks\n");
 	}
 
 	ret = data->chip_info->chip_config(data);
@@ -1776,10 +2167,12 @@ int bmp280_common_probe(struct device *dev,
 	 * time once. They will not change.
 	 */
 
-	ret = data->chip_info->read_calib(data);
-	if (ret < 0)
-		return dev_err_probe(data->dev, ret,
-				     "failed to read calibration coefficients\n");
+	if (data->chip_info->read_calib) {
+		ret = data->chip_info->read_calib(data);
+		if (ret < 0)
+			return dev_err_probe(data->dev, ret,
+					     "failed to read calibration coefficients\n");
+	}
 
 	/*
 	 * Attempt to grab an optional EOC IRQ - only the BMP085 has this
diff --git a/drivers/iio/pressure/bmp280-i2c.c b/drivers/iio/pressure/bmp280-i2c.c
index 14eab086d24a..567b945e6427 100644
--- a/drivers/iio/pressure/bmp280-i2c.c
+++ b/drivers/iio/pressure/bmp280-i2c.c
@@ -8,25 +8,14 @@
 static int bmp280_i2c_probe(struct i2c_client *client)
 {
 	struct regmap *regmap;
-	const struct regmap_config *regmap_config;
+	const struct bmp280_chip_info *chip_info;
 	const struct i2c_device_id *id = i2c_client_get_device_id(client);
 
-	switch (id->driver_data) {
-	case BMP180_CHIP_ID:
-		regmap_config = &bmp180_regmap_config;
-		break;
-	case BMP280_CHIP_ID:
-	case BME280_CHIP_ID:
-		regmap_config = &bmp280_regmap_config;
-		break;
-	case BMP380_CHIP_ID:
-		regmap_config = &bmp380_regmap_config;
-		break;
-	default:
-		return -EINVAL;
-	}
+	chip_info = device_get_match_data(&client->dev);
+	if (!chip_info)
+		chip_info = (const struct bmp280_chip_info *) id->driver_data;
 
-	regmap = devm_regmap_init_i2c(client, regmap_config);
+	regmap = devm_regmap_init_i2c(client, chip_info->regmap_config);
 	if (IS_ERR(regmap)) {
 		dev_err(&client->dev, "failed to allocate register map\n");
 		return PTR_ERR(regmap);
@@ -34,27 +23,29 @@ static int bmp280_i2c_probe(struct i2c_client *client)
 
 	return bmp280_common_probe(&client->dev,
 				   regmap,
-				   id->driver_data,
+				   chip_info,
 				   id->name,
 				   client->irq);
 }
 
 static const struct of_device_id bmp280_of_i2c_match[] = {
-	{ .compatible = "bosch,bmp085", .data = (void *)BMP180_CHIP_ID },
-	{ .compatible = "bosch,bmp180", .data = (void *)BMP180_CHIP_ID },
-	{ .compatible = "bosch,bmp280", .data = (void *)BMP280_CHIP_ID },
-	{ .compatible = "bosch,bme280", .data = (void *)BME280_CHIP_ID },
-	{ .compatible = "bosch,bmp380", .data = (void *)BMP380_CHIP_ID },
+	{ .compatible = "bosch,bmp085", .data = &bmp180_chip_info },
+	{ .compatible = "bosch,bmp180", .data = &bmp180_chip_info },
+	{ .compatible = "bosch,bmp280", .data = &bmp280_chip_info },
+	{ .compatible = "bosch,bme280", .data = &bme280_chip_info },
+	{ .compatible = "bosch,bmp380", .data = &bmp380_chip_info },
+	{ .compatible = "bosch,bmp580", .data = &bmp580_chip_info },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, bmp280_of_i2c_match);
 
 static const struct i2c_device_id bmp280_i2c_id[] = {
-	{"bmp085", BMP180_CHIP_ID },
-	{"bmp180", BMP180_CHIP_ID },
-	{"bmp280", BMP280_CHIP_ID },
-	{"bme280", BME280_CHIP_ID },
-	{"bmp380", BMP380_CHIP_ID },
+	{"bmp085", (kernel_ulong_t)&bmp180_chip_info },
+	{"bmp180", (kernel_ulong_t)&bmp180_chip_info },
+	{"bmp280", (kernel_ulong_t)&bmp280_chip_info },
+	{"bme280", (kernel_ulong_t)&bme280_chip_info },
+	{"bmp380", (kernel_ulong_t)&bmp380_chip_info },
+	{"bmp580", (kernel_ulong_t)&bmp580_chip_info },
 	{ },
 };
 MODULE_DEVICE_TABLE(i2c, bmp280_i2c_id);
diff --git a/drivers/iio/pressure/bmp280-regmap.c b/drivers/iio/pressure/bmp280-regmap.c
index c98c67970265..3ee56720428c 100644
--- a/drivers/iio/pressure/bmp280-regmap.c
+++ b/drivers/iio/pressure/bmp280-regmap.c
@@ -115,6 +115,54 @@ static bool bmp380_is_volatile_reg(struct device *dev, unsigned int reg)
 	}
 }
 
+static bool bmp580_is_writeable_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case BMP580_REG_NVM_DATA_MSB:
+	case BMP580_REG_NVM_DATA_LSB:
+	case BMP580_REG_NVM_ADDR:
+	case BMP580_REG_ODR_CONFIG:
+	case BMP580_REG_OSR_CONFIG:
+	case BMP580_REG_INT_SOURCE:
+	case BMP580_REG_INT_CONFIG:
+	case BMP580_REG_OOR_THR_MSB:
+	case BMP580_REG_OOR_THR_LSB:
+	case BMP580_REG_OOR_CONFIG:
+	case BMP580_REG_OOR_RANGE:
+	case BMP580_REG_IF_CONFIG:
+	case BMP580_REG_FIFO_CONFIG:
+	case BMP580_REG_FIFO_SEL:
+	case BMP580_REG_DSP_CONFIG:
+	case BMP580_REG_DSP_IIR:
+	case BMP580_REG_CMD:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool bmp580_is_volatile_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case BMP580_REG_NVM_DATA_MSB:
+	case BMP580_REG_NVM_DATA_LSB:
+	case BMP580_REG_FIFO_COUNT:
+	case BMP580_REG_INT_STATUS:
+	case BMP580_REG_PRESS_XLSB:
+	case BMP580_REG_PRESS_LSB:
+	case BMP580_REG_PRESS_MSB:
+	case BMP580_REG_FIFO_DATA:
+	case BMP580_REG_TEMP_XLSB:
+	case BMP580_REG_TEMP_LSB:
+	case BMP580_REG_TEMP_MSB:
+	case BMP580_REG_EFF_OSR:
+	case BMP580_REG_STATUS:
+		return true;
+	default:
+		return false;
+	}
+}
+
 const struct regmap_config bmp280_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
@@ -138,3 +186,15 @@ const struct regmap_config bmp380_regmap_config = {
 	.volatile_reg = bmp380_is_volatile_reg,
 };
 EXPORT_SYMBOL_NS(bmp380_regmap_config, IIO_BMP280);
+
+const struct regmap_config bmp580_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+
+	.max_register = BMP580_REG_CMD,
+	.cache_type = REGCACHE_RBTREE,
+
+	.writeable_reg = bmp580_is_writeable_reg,
+	.volatile_reg = bmp580_is_volatile_reg,
+};
+EXPORT_SYMBOL_NS(bmp580_regmap_config, IIO_BMP280);
diff --git a/drivers/iio/pressure/bmp280-spi.c b/drivers/iio/pressure/bmp280-spi.c
index 011c68e07ebf..1dff9bb7c4e9 100644
--- a/drivers/iio/pressure/bmp280-spi.c
+++ b/drivers/iio/pressure/bmp280-spi.c
@@ -47,8 +47,8 @@ static struct regmap_bus bmp280_regmap_bus = {
 static int bmp280_spi_probe(struct spi_device *spi)
 {
 	const struct spi_device_id *id = spi_get_device_id(spi);
+	const struct bmp280_chip_info *chip_info;
 	struct regmap *regmap;
-	const struct regmap_config *regmap_config;
 	int ret;
 
 	spi->bits_per_word = 8;
@@ -58,25 +58,14 @@ static int bmp280_spi_probe(struct spi_device *spi)
 		return ret;
 	}
 
-	switch (id->driver_data) {
-	case BMP180_CHIP_ID:
-		regmap_config = &bmp180_regmap_config;
-		break;
-	case BMP280_CHIP_ID:
-	case BME280_CHIP_ID:
-		regmap_config = &bmp280_regmap_config;
-		break;
-	case BMP380_CHIP_ID:
-		regmap_config = &bmp380_regmap_config;
-		break;
-	default:
-		return -EINVAL;
-	}
+	chip_info = device_get_match_data(&spi->dev);
+	if (!chip_info)
+		chip_info = (const struct bmp280_chip_info *) id->driver_data;
 
 	regmap = devm_regmap_init(&spi->dev,
 				  &bmp280_regmap_bus,
 				  &spi->dev,
-				  regmap_config);
+				  chip_info->regmap_config);
 	if (IS_ERR(regmap)) {
 		dev_err(&spi->dev, "failed to allocate register map\n");
 		return PTR_ERR(regmap);
@@ -84,28 +73,30 @@ static int bmp280_spi_probe(struct spi_device *spi)
 
 	return bmp280_common_probe(&spi->dev,
 				   regmap,
-				   id->driver_data,
+				   chip_info,
 				   id->name,
 				   spi->irq);
 }
 
 static const struct of_device_id bmp280_of_spi_match[] = {
-	{ .compatible = "bosch,bmp085", },
-	{ .compatible = "bosch,bmp180", },
-	{ .compatible = "bosch,bmp181", },
-	{ .compatible = "bosch,bmp280", },
-	{ .compatible = "bosch,bme280", },
-	{ .compatible = "bosch,bmp380", },
+	{ .compatible = "bosch,bmp085", .data = &bmp180_chip_info },
+	{ .compatible = "bosch,bmp180", .data = &bmp180_chip_info },
+	{ .compatible = "bosch,bmp181", .data = &bmp180_chip_info },
+	{ .compatible = "bosch,bmp280", .data = &bmp280_chip_info },
+	{ .compatible = "bosch,bme280", .data = &bmp280_chip_info },
+	{ .compatible = "bosch,bmp380", .data = &bmp380_chip_info },
+	{ .compatible = "bosch,bmp580", .data = &bmp580_chip_info },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, bmp280_of_spi_match);
 
 static const struct spi_device_id bmp280_spi_id[] = {
-	{ "bmp180", BMP180_CHIP_ID },
-	{ "bmp181", BMP180_CHIP_ID },
-	{ "bmp280", BMP280_CHIP_ID },
-	{ "bme280", BME280_CHIP_ID },
-	{ "bmp380", BMP380_CHIP_ID },
+	{ "bmp180", (kernel_ulong_t)&bmp180_chip_info },
+	{ "bmp181", (kernel_ulong_t)&bmp180_chip_info },
+	{ "bmp280", (kernel_ulong_t)&bmp280_chip_info },
+	{ "bme280", (kernel_ulong_t)&bmp280_chip_info },
+	{ "bmp380", (kernel_ulong_t)&bmp380_chip_info },
+	{ "bmp580", (kernel_ulong_t)&bmp580_chip_info },
 	{ }
 };
 MODULE_DEVICE_TABLE(spi, bmp280_spi_id);
diff --git a/drivers/iio/pressure/bmp280.h b/drivers/iio/pressure/bmp280.h
index c791325c7416..5c0563ce7572 100644
--- a/drivers/iio/pressure/bmp280.h
+++ b/drivers/iio/pressure/bmp280.h
@@ -1,7 +1,114 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 #include <linux/bitops.h>
 #include <linux/device.h>
+#include <linux/iio/iio.h>
 #include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+
+
+/* BMP580 specific registers */
+#define BMP580_REG_CMD			0x7E
+#define BMP580_REG_EFF_OSR		0x38
+#define BMP580_REG_ODR_CONFIG		0x37
+#define BMP580_REG_OSR_CONFIG		0x36
+#define BMP580_REG_IF_CONFIG		0x13
+#define BMP580_REG_REV_ID		0x02
+#define BMP580_REG_CHIP_ID		0x01
+/* OOR allows to configure a pressure alarm */
+#define BMP580_REG_OOR_CONFIG		0x35
+#define BMP580_REG_OOR_RANGE		0x34
+#define BMP580_REG_OOR_THR_MSB		0x33
+#define BMP580_REG_OOR_THR_LSB		0x32
+/* DSP registers (IIR filters) */
+#define BMP580_REG_DSP_IIR		0x31
+#define BMP580_REG_DSP_CONFIG		0x30
+/* NVM access registers */
+#define BMP580_REG_NVM_DATA_MSB		0x2D
+#define BMP580_REG_NVM_DATA_LSB		0x2C
+#define BMP580_REG_NVM_ADDR		0x2B
+/* Status registers */
+#define BMP580_REG_STATUS		0x28
+#define BMP580_REG_INT_STATUS		0x27
+#define BMP580_REG_CHIP_STATUS		0x11
+/* Data registers */
+#define BMP580_REG_FIFO_DATA		0x29
+#define BMP580_REG_PRESS_MSB		0x22
+#define BMP580_REG_PRESS_LSB		0x21
+#define BMP580_REG_PRESS_XLSB		0x20
+#define BMP580_REG_TEMP_MSB		0x1F
+#define BMP580_REG_TEMP_LSB		0x1E
+#define BMP580_REG_TEMP_XLSB		0x1D
+/* FIFO config registers */
+#define BMP580_REG_FIFO_SEL		0x18
+#define BMP580_REG_FIFO_COUNT		0x17
+#define BMP580_REG_FIFO_CONFIG		0x16
+/* Interruptions config registers */
+#define BMP580_REG_INT_SOURCE		0x15
+#define BMP580_REG_INT_CONFIG		0x14
+
+#define BMP580_CMD_NOOP			0x00
+#define BMP580_CMD_EXTMODE_SEQ_0	0x73
+#define BMP580_CMD_EXTMODE_SEQ_1	0xB4
+#define BMP580_CMD_EXTMODE_SEQ_2	0x69
+#define BMP580_CMD_NVM_OP_SEQ_0		0x5D
+#define BMP580_CMD_NVM_READ_SEQ_1	0xA5
+#define BMP580_CMD_NVM_WRITE_SEQ_1	0xA0
+#define BMP580_CMD_SOFT_RESET		0xB6
+
+#define BMP580_INT_STATUS_POR_MASK	BIT(4)
+
+#define BMP580_STATUS_CORE_RDY_MASK	BIT(0)
+#define BMP580_STATUS_NVM_RDY_MASK	BIT(1)
+#define BMP580_STATUS_NVM_ERR_MASK	BIT(2)
+#define BMP580_STATUS_NVM_CMD_ERR_MASK	BIT(3)
+
+#define BMP580_OSR_PRESS_MASK		GENMASK(5, 3)
+#define BMP580_OSR_TEMP_MASK		GENMASK(2, 0)
+#define BMP580_OSR_PRESS_EN		BIT(6)
+#define BMP580_EFF_OSR_PRESS_MASK	GENMASK(5, 3)
+#define BMP580_EFF_OSR_TEMP_MASK	GENMASK(2, 0)
+#define BMP580_EFF_OSR_VALID_ODR	BIT(7)
+
+#define BMP580_ODR_MASK			GENMASK(6, 2)
+#define BMP580_MODE_MASK		GENMASK(1, 0)
+#define BMP580_MODE_SLEEP		0
+#define BMP580_MODE_NORMAL		1
+#define BMP580_MODE_FORCED		2
+#define BMP580_MODE_CONTINOUS		3
+#define BMP580_ODR_DEEPSLEEP_DIS	BIT(7)
+
+#define BMP580_DSP_COMP_MASK		GENMASK(1, 0)
+#define BMP580_DSP_COMP_DIS		0
+#define BMP580_DSP_TEMP_COMP_EN		1
+/*
+ * In section 7.27 of datasheet, modes 2 and 3 are technically the same.
+ * Pressure compensation means also enabling temperature compensation
+ */
+#define BMP580_DSP_PRESS_COMP_EN	2
+#define BMP580_DSP_PRESS_TEMP_COMP_EN	3
+#define BMP580_DSP_IIR_FORCED_FLUSH	BIT(2)
+#define BMP580_DSP_SHDW_IIR_TEMP_EN	BIT(3)
+#define BMP580_DSP_FIFO_IIR_TEMP_EN	BIT(4)
+#define BMP580_DSP_SHDW_IIR_PRESS_EN	BIT(5)
+#define BMP580_DSP_FIFO_IIR_PRESS_EN	BIT(6)
+#define BMP580_DSP_OOR_IIR_PRESS_EN	BIT(7)
+
+#define BMP580_DSP_IIR_PRESS_MASK	GENMASK(5, 3)
+#define BMP580_DSP_IIR_TEMP_MASK	GENMASK(2, 0)
+#define BMP580_FILTER_OFF		0
+#define BMP580_FILTER_1X		1
+#define BMP580_FILTER_3X		2
+#define BMP580_FILTER_7X		3
+#define BMP580_FILTER_15X		4
+#define BMP580_FILTER_31X		5
+#define BMP580_FILTER_63X		6
+#define BMP580_FILTER_127X		7
+
+#define BMP580_NVM_ROW_ADDR_MASK	GENMASK(5, 0)
+#define BMP580_NVM_PROG_EN		BIT(6)
+
+#define BMP580_TEMP_SKIPPED		0x7f7f7f
+#define BMP580_PRESS_SKIPPED		0x7f7f7f
 
 /* BMP380 specific registers */
 #define BMP380_REG_CMD			0x7E
@@ -181,6 +288,8 @@
 #define BMP280_REG_ID			0xD0
 
 #define BMP380_CHIP_ID			0x50
+#define BMP580_CHIP_ID			0x50
+#define BMP580_CHIP_ID_ALT		0x51
 #define BMP180_CHIP_ID			0x55
 #define BMP280_CHIP_ID			0x58
 #define BME280_CHIP_ID			0x60
@@ -191,15 +300,177 @@
 #define BMP280_PRESS_SKIPPED		0x80000
 #define BMP280_HUMIDITY_SKIPPED		0x8000
 
+/* Core exported structs */
+
+static const char *const bmp280_supply_names[] = {
+	"vddd", "vdda"
+};
+
+#define BMP280_NUM_SUPPLIES ARRAY_SIZE(bmp280_supply_names)
+
+struct bmp180_calib {
+	s16 AC1;
+	s16 AC2;
+	s16 AC3;
+	u16 AC4;
+	u16 AC5;
+	u16 AC6;
+	s16 B1;
+	s16 B2;
+	s16 MB;
+	s16 MC;
+	s16 MD;
+};
+
+/* See datasheet Section 4.2.2. */
+struct bmp280_calib {
+	u16 T1;
+	s16 T2;
+	s16 T3;
+	u16 P1;
+	s16 P2;
+	s16 P3;
+	s16 P4;
+	s16 P5;
+	s16 P6;
+	s16 P7;
+	s16 P8;
+	s16 P9;
+	u8  H1;
+	s16 H2;
+	u8  H3;
+	s16 H4;
+	s16 H5;
+	s8  H6;
+};
+
+/* See datasheet Section 3.11.1. */
+struct bmp380_calib {
+	u16 T1;
+	u16 T2;
+	s8  T3;
+	s16 P1;
+	s16 P2;
+	s8  P3;
+	s8  P4;
+	u16 P5;
+	u16 P6;
+	s8  P7;
+	s8  P8;
+	s16 P9;
+	s8  P10;
+	s8  P11;
+};
+
+struct bmp280_data {
+	struct device *dev;
+	struct mutex lock;
+	struct regmap *regmap;
+	struct completion done;
+	bool use_eoc;
+	const struct bmp280_chip_info *chip_info;
+	union {
+		struct bmp180_calib bmp180;
+		struct bmp280_calib bmp280;
+		struct bmp380_calib bmp380;
+	} calib;
+	struct regulator_bulk_data supplies[BMP280_NUM_SUPPLIES];
+	unsigned int start_up_time; /* in microseconds */
+
+	/* log of base 2 of oversampling rate */
+	u8 oversampling_press;
+	u8 oversampling_temp;
+	u8 oversampling_humid;
+	u8 iir_filter_coeff;
+
+	/*
+	 * BMP380 devices introduce sampling frequency configuration. See
+	 * datasheet sections 3.3.3. and 4.3.19 for more details.
+	 *
+	 * BMx280 devices allowed indirect configuration of sampling frequency
+	 * changing the t_standby duration between measurements, as detailed on
+	 * section 3.6.3 of the datasheet.
+	 */
+	int sampling_freq;
+
+	/*
+	 * Carryover value from temperature conversion, used in pressure
+	 * calculation.
+	 */
+	s32 t_fine;
+
+	/*
+	 * DMA (thus cache coherency maintenance) may require the
+	 * transfer buffers to live in their own cache lines.
+	 */
+	union {
+		/* Sensor data buffer */
+		u8 buf[3];
+		/* Calibration data buffers */
+		__le16 bmp280_cal_buf[BMP280_CONTIGUOUS_CALIB_REGS / 2];
+		__be16 bmp180_cal_buf[BMP180_REG_CALIB_COUNT / 2];
+		u8 bmp380_cal_buf[BMP380_CALIB_REG_COUNT];
+		/* Miscellaneous, endianess-aware data buffers */
+		__le16 le16;
+		__be16 be16;
+	} __aligned(IIO_DMA_MINALIGN);
+};
+
+struct bmp280_chip_info {
+	unsigned int id_reg;
+	const unsigned int chip_id;
+
+	const struct regmap_config *regmap_config;
+
+	const struct iio_chan_spec *channels;
+	int num_channels;
+	unsigned int start_up_time;
+
+	const int *oversampling_temp_avail;
+	int num_oversampling_temp_avail;
+	int oversampling_temp_default;
+
+	const int *oversampling_press_avail;
+	int num_oversampling_press_avail;
+	int oversampling_press_default;
+
+	const int *oversampling_humid_avail;
+	int num_oversampling_humid_avail;
+	int oversampling_humid_default;
+
+	const int *iir_filter_coeffs_avail;
+	int num_iir_filter_coeffs_avail;
+	int iir_filter_coeff_default;
+
+	const int (*sampling_freq_avail)[2];
+	int num_sampling_freq_avail;
+	int sampling_freq_default;
+
+	int (*chip_config)(struct bmp280_data *);
+	int (*read_temp)(struct bmp280_data *, int *, int *);
+	int (*read_press)(struct bmp280_data *, int *, int *);
+	int (*read_humid)(struct bmp280_data *, int *, int *);
+	int (*read_calib)(struct bmp280_data *);
+	int (*preinit)(struct bmp280_data *);
+};
+
+/* Chip infos for each variant */
+extern const struct bmp280_chip_info bmp180_chip_info;
+extern const struct bmp280_chip_info bmp280_chip_info;
+extern const struct bmp280_chip_info bme280_chip_info;
+extern const struct bmp280_chip_info bmp380_chip_info;
+extern const struct bmp280_chip_info bmp580_chip_info;
+
 /* Regmap configurations */
 extern const struct regmap_config bmp180_regmap_config;
 extern const struct regmap_config bmp280_regmap_config;
 extern const struct regmap_config bmp380_regmap_config;
+extern const struct regmap_config bmp580_regmap_config;
 
 /* Probe called from different transports */
 int bmp280_common_probe(struct device *dev,
 			struct regmap *regmap,
-			unsigned int chip,
+			const struct bmp280_chip_info *,
 			const char *name,
 			int irq);
 
diff --git a/drivers/iio/pressure/zpa2326.c b/drivers/iio/pressure/zpa2326.c
index 67119a9b95fc..421e059d1f19 100644
--- a/drivers/iio/pressure/zpa2326.c
+++ b/drivers/iio/pressure/zpa2326.c
@@ -829,7 +829,7 @@ static irqreturn_t zpa2326_handle_threaded_irq(int irq, void *data)
 	}
 
 	/* New sample available: dispatch internal trigger consumers. */
-	iio_trigger_poll_chained(priv->trigger);
+	iio_trigger_poll_nested(priv->trigger);
 
 	if (cont)
 		/*