1 // SPDX-License-Identifier: GPL-2.0-only
3  * SPI interface for the BMP280 driver
5  * Inspired by the older BMP085 driver drivers/misc/bmp085-spi.c
11 #include <linux/spi/spi.h>
18 	struct spi_device *spi = to_spi_device(context);  in bmp280_regmap_spi_write()  local
23 	 * The SPI register address (= full register address without bit 7) and  in bmp280_regmap_spi_write()
28 	return spi_write_then_read(spi, buf, 2, NULL, 0);  in bmp280_regmap_spi_write()
34 	struct spi_device *spi = to_spi_device(context);  in bmp280_regmap_spi_read()  local
36 	return spi_write_then_read(spi, reg, reg_size, val, val_size);  in bmp280_regmap_spi_read()
42 	struct spi_device *spi = to_spi_device(context);  in bmp380_regmap_spi_read()  local
47 		return -EINVAL;  in bmp380_regmap_spi_read()
50 	 * According to the BMP3xx datasheets, for a basic SPI read opertion,  in bmp380_regmap_spi_read()
54 	status = spi_write_then_read(spi, reg, 1, rx_buf, val_size + 1);  in bmp380_regmap_spi_read()
78 static int bmp280_spi_probe(struct spi_device *spi)  in bmp280_spi_probe()  argument
80 	const struct spi_device_id *id = spi_get_device_id(spi);  in bmp280_spi_probe()
85 	chip_info = spi_get_device_match_data(spi);  in bmp280_spi_probe()
87 	if (chip_info->spi_read_extra_byte)  in bmp280_spi_probe()
92 	regmap = devm_regmap_init(&spi->dev,  in bmp280_spi_probe()
94 				  &spi->dev,  in bmp280_spi_probe()
95 				  chip_info->regmap_config);  in bmp280_spi_probe()
97 		dev_err(&spi->dev, "failed to allocate register map\n");  in bmp280_spi_probe()
101 	return bmp280_common_probe(&spi->dev,  in bmp280_spi_probe()
104 				   id->name,  in bmp280_spi_probe()
105 				   spi->irq);  in bmp280_spi_probe()
109 	{ .compatible = "bosch,bmp085", .data = &bmp085_chip_info },
110 	{ .compatible = "bosch,bmp180", .data = &bmp180_chip_info },
111 	{ .compatible = "bosch,bmp181", .data = &bmp180_chip_info },
112 	{ .compatible = "bosch,bmp280", .data = &bmp280_chip_info },
113 	{ .compatible = "bosch,bme280", .data = &bme280_chip_info },
114 	{ .compatible = "bosch,bmp380", .data = &bmp380_chip_info },
115 	{ .compatible = "bosch,bmp580", .data = &bmp580_chip_info },
130 MODULE_DEVICE_TABLE(spi, bmp280_spi_id);
143 MODULE_DESCRIPTION("BMP280 SPI bus driver");