| 1 | // SPDX-License-Identifier: GPL-2.0-only |
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| 2 | /* |
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| 3 | * STMicroelectronics hts221 i2c driver |
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| 4 | * |
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| 5 | * Copyright 2016 STMicroelectronics Inc. |
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| 6 | * |
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| 7 | * Lorenzo Bianconi <lorenzo.bianconi@st.com> |
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| 8 | */ |
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| 9 | |
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| 10 | #include <linux/kernel.h> |
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| 11 | #include <linux/module.h> |
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| 12 | #include <linux/acpi.h> |
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| 13 | #include <linux/i2c.h> |
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| 14 | #include <linux/slab.h> |
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| 15 | #include <linux/regmap.h> |
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| 16 | |
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| 17 | #include "hts221.h" |
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| 18 | |
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| 19 | #define HTS221_I2C_AUTO_INCREMENT BIT(7) |
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| 20 | |
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| 21 | static const struct regmap_config hts221_i2c_regmap_config = { |
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| 22 | .reg_bits = 8, |
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| 23 | .val_bits = 8, |
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| 24 | .write_flag_mask = HTS221_I2C_AUTO_INCREMENT, |
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| 25 | .read_flag_mask = HTS221_I2C_AUTO_INCREMENT, |
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| 26 | }; |
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| 27 | |
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| 28 | static int hts221_i2c_probe(struct i2c_client *client) |
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| 29 | { |
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| 30 | struct regmap *regmap; |
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| 31 | |
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| 32 | regmap = devm_regmap_init_i2c(client, &hts221_i2c_regmap_config); |
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| 33 | if (IS_ERR(ptr: regmap)) { |
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| 34 | dev_err(&client->dev, "Failed to register i2c regmap %ld\n" , |
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| 35 | PTR_ERR(regmap)); |
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| 36 | return PTR_ERR(ptr: regmap); |
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| 37 | } |
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| 38 | |
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| 39 | return hts221_probe(dev: &client->dev, irq: client->irq, |
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| 40 | name: client->name, regmap); |
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| 41 | } |
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| 42 | |
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| 43 | static const struct acpi_device_id hts221_acpi_match[] = { |
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| 44 | {"SMO9100" , 0}, |
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| 45 | { }, |
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| 46 | }; |
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| 47 | MODULE_DEVICE_TABLE(acpi, hts221_acpi_match); |
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| 48 | |
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| 49 | static const struct of_device_id hts221_i2c_of_match[] = { |
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| 50 | { .compatible = "st,hts221" , }, |
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| 51 | {}, |
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| 52 | }; |
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| 53 | MODULE_DEVICE_TABLE(of, hts221_i2c_of_match); |
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| 54 | |
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| 55 | static const struct i2c_device_id hts221_i2c_id_table[] = { |
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| 56 | { HTS221_DEV_NAME }, |
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| 57 | {}, |
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| 58 | }; |
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| 59 | MODULE_DEVICE_TABLE(i2c, hts221_i2c_id_table); |
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| 60 | |
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| 61 | static struct i2c_driver hts221_driver = { |
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| 62 | .driver = { |
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| 63 | .name = "hts221_i2c" , |
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| 64 | .pm = pm_sleep_ptr(&hts221_pm_ops), |
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| 65 | .of_match_table = hts221_i2c_of_match, |
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| 66 | .acpi_match_table = ACPI_PTR(hts221_acpi_match), |
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| 67 | }, |
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| 68 | .probe = hts221_i2c_probe, |
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| 69 | .id_table = hts221_i2c_id_table, |
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| 70 | }; |
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| 71 | module_i2c_driver(hts221_driver); |
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| 72 | |
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| 73 | MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>" ); |
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| 74 | MODULE_DESCRIPTION("STMicroelectronics hts221 i2c driver" ); |
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| 75 | MODULE_LICENSE("GPL v2" ); |
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| 76 | MODULE_IMPORT_NS(IIO_HTS221); |
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| 77 | |
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