diff options
Diffstat (limited to 'drivers/iio/light/st_uvis25_i2c.c')
-rw-r--r-- | drivers/iio/light/st_uvis25_i2c.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/drivers/iio/light/st_uvis25_i2c.c b/drivers/iio/light/st_uvis25_i2c.c new file mode 100644 index 0000000000..6bc2ddfb77 --- /dev/null +++ b/drivers/iio/light/st_uvis25_i2c.c @@ -0,0 +1,68 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * STMicroelectronics uvis25 i2c driver + * + * Copyright 2017 STMicroelectronics Inc. + * + * Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/mod_devicetable.h> +#include <linux/i2c.h> +#include <linux/slab.h> +#include <linux/regmap.h> + +#include "st_uvis25.h" + +#define UVIS25_I2C_AUTO_INCREMENT BIT(7) + +static const struct regmap_config st_uvis25_i2c_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .write_flag_mask = UVIS25_I2C_AUTO_INCREMENT, + .read_flag_mask = UVIS25_I2C_AUTO_INCREMENT, +}; + +static int st_uvis25_i2c_probe(struct i2c_client *client) +{ + struct regmap *regmap; + + regmap = devm_regmap_init_i2c(client, &st_uvis25_i2c_regmap_config); + if (IS_ERR(regmap)) { + dev_err(&client->dev, "Failed to register i2c regmap %ld\n", + PTR_ERR(regmap)); + return PTR_ERR(regmap); + } + + return st_uvis25_probe(&client->dev, client->irq, regmap); +} + +static const struct of_device_id st_uvis25_i2c_of_match[] = { + { .compatible = "st,uvis25", }, + {}, +}; +MODULE_DEVICE_TABLE(of, st_uvis25_i2c_of_match); + +static const struct i2c_device_id st_uvis25_i2c_id_table[] = { + { ST_UVIS25_DEV_NAME }, + {}, +}; +MODULE_DEVICE_TABLE(i2c, st_uvis25_i2c_id_table); + +static struct i2c_driver st_uvis25_driver = { + .driver = { + .name = "st_uvis25_i2c", + .pm = pm_sleep_ptr(&st_uvis25_pm_ops), + .of_match_table = st_uvis25_i2c_of_match, + }, + .probe = st_uvis25_i2c_probe, + .id_table = st_uvis25_i2c_id_table, +}; +module_i2c_driver(st_uvis25_driver); + +MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>"); +MODULE_DESCRIPTION("STMicroelectronics uvis25 i2c driver"); +MODULE_LICENSE("GPL v2"); +MODULE_IMPORT_NS(IIO_UVIS25); |