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