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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/iio/humidity/hts221_spi.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/iio/humidity/hts221_spi.c')
-rw-r--r--drivers/iio/humidity/hts221_spi.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/drivers/iio/humidity/hts221_spi.c b/drivers/iio/humidity/hts221_spi.c
new file mode 100644
index 000000000..fc4adb68f
--- /dev/null
+++ b/drivers/iio/humidity/hts221_spi.c
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * STMicroelectronics hts221 spi driver
+ *
+ * Copyright 2016 STMicroelectronics Inc.
+ *
+ * Lorenzo Bianconi <lorenzo.bianconi@st.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/spi/spi.h>
+#include <linux/slab.h>
+#include <linux/regmap.h>
+
+#include "hts221.h"
+
+#define HTS221_SPI_READ BIT(7)
+#define HTS221_SPI_AUTO_INCREMENT BIT(6)
+
+static const struct regmap_config hts221_spi_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .write_flag_mask = HTS221_SPI_AUTO_INCREMENT,
+ .read_flag_mask = HTS221_SPI_READ | HTS221_SPI_AUTO_INCREMENT,
+};
+
+static int hts221_spi_probe(struct spi_device *spi)
+{
+ struct regmap *regmap;
+
+ regmap = devm_regmap_init_spi(spi, &hts221_spi_regmap_config);
+ if (IS_ERR(regmap)) {
+ dev_err(&spi->dev, "Failed to register spi regmap %ld\n",
+ PTR_ERR(regmap));
+ return PTR_ERR(regmap);
+ }
+
+ return hts221_probe(&spi->dev, spi->irq,
+ spi->modalias, regmap);
+}
+
+static const struct of_device_id hts221_spi_of_match[] = {
+ { .compatible = "st,hts221", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, hts221_spi_of_match);
+
+static const struct spi_device_id hts221_spi_id_table[] = {
+ { HTS221_DEV_NAME },
+ {},
+};
+MODULE_DEVICE_TABLE(spi, hts221_spi_id_table);
+
+static struct spi_driver hts221_driver = {
+ .driver = {
+ .name = "hts221_spi",
+ .pm = pm_sleep_ptr(&hts221_pm_ops),
+ .of_match_table = hts221_spi_of_match,
+ },
+ .probe = hts221_spi_probe,
+ .id_table = hts221_spi_id_table,
+};
+module_spi_driver(hts221_driver);
+
+MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");
+MODULE_DESCRIPTION("STMicroelectronics hts221 spi driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_HTS221);