1 files changed, 73 insertions, 0 deletions
diff --git a/drivers/iio/accel/adxl345_spi.c b/drivers/iio/accel/adxl345_spi.c
new file mode 100644
index 000000000..aaade5808
--- /dev/null
+++ b/drivers/iio/accel/adxl345_spi.c
@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ADXL345 3-Axis Digital Accelerometer SPI driver
+ *
+ * Copyright (c) 2017 Eva Rachel Retuya <eraretuya@gmail.com>
+ */
+
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/spi/spi.h>
+
+#include "adxl345.h"
+
+#define ADXL345_MAX_SPI_FREQ_HZ		5000000
+
+static const struct regmap_config adxl345_spi_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	 /* Setting bits 7 and 6 enables multiple-byte read */
+	.read_flag_mask = BIT(7) | BIT(6),
+};
+
+static int adxl345_spi_probe(struct spi_device *spi)
+{
+	struct regmap *regmap;
+
+	/* Bail out if max_speed_hz exceeds 5 MHz */
+	if (spi->max_speed_hz > ADXL345_MAX_SPI_FREQ_HZ)
+		return dev_err_probe(&spi->dev, -EINVAL, "SPI CLK, %d Hz exceeds 5 MHz\n",
+				     spi->max_speed_hz);
+
+	regmap = devm_regmap_init_spi(spi, &adxl345_spi_regmap_config);
+	if (IS_ERR(regmap))
+		return dev_err_probe(&spi->dev, PTR_ERR(regmap), "Error initializing regmap\n");
+
+	return adxl345_core_probe(&spi->dev, regmap);
+}
+
+static const struct spi_device_id adxl345_spi_id[] = {
+	{ "adxl345", ADXL345 },
+	{ "adxl375", ADXL375 },
+	{ }
+};
+MODULE_DEVICE_TABLE(spi, adxl345_spi_id);
+
+static const struct of_device_id adxl345_of_match[] = {
+	{ .compatible = "adi,adxl345", .data = (const void *)ADXL345 },
+	{ .compatible = "adi,adxl375", .data = (const void *)ADXL375 },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, adxl345_of_match);
+
+static const struct acpi_device_id adxl345_acpi_match[] = {
+	{ "ADS0345", ADXL345 },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, adxl345_acpi_match);
+
+static struct spi_driver adxl345_spi_driver = {
+	.driver = {
+		.name	= "adxl345_spi",
+		.of_match_table = adxl345_of_match,
+		.acpi_match_table = adxl345_acpi_match,
+	},
+	.probe		= adxl345_spi_probe,
+	.id_table	= adxl345_spi_id,
+};
+module_spi_driver(adxl345_spi_driver);
+
+MODULE_AUTHOR("Eva Rachel Retuya <eraretuya@gmail.com>");
+MODULE_DESCRIPTION("ADXL345 3-Axis Digital Accelerometer SPI driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ADXL345);