1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * STMicroelectronics uvis25 i2c driver 4 * 5 * Copyright 2017 STMicroelectronics Inc. 6 * 7 * Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> 8 */ 9 10 #include <linux/kernel.h> 11 #include <linux/module.h> 12 #include <linux/i2c.h> 13 #include <linux/slab.h> 14 #include <linux/regmap.h> 15 16 #include "st_uvis25.h" 17 18 #define UVIS25_I2C_AUTO_INCREMENT BIT(7) 19 20 static const struct regmap_config st_uvis25_i2c_regmap_config = { 21 .reg_bits = 8, 22 .val_bits = 8, 23 .write_flag_mask = UVIS25_I2C_AUTO_INCREMENT, 24 .read_flag_mask = UVIS25_I2C_AUTO_INCREMENT, 25 }; 26 27 static int st_uvis25_i2c_probe(struct i2c_client *client, 28 const struct i2c_device_id *id) 29 { 30 struct regmap *regmap; 31 32 regmap = devm_regmap_init_i2c(client, &st_uvis25_i2c_regmap_config); 33 if (IS_ERR(regmap)) { 34 dev_err(&client->dev, "Failed to register i2c regmap %d\n", 35 (int)PTR_ERR(regmap)); 36 return PTR_ERR(regmap); 37 } 38 39 return st_uvis25_probe(&client->dev, client->irq, regmap); 40 } 41 42 static const struct of_device_id st_uvis25_i2c_of_match[] = { 43 { .compatible = "st,uvis25", }, 44 {}, 45 }; 46 MODULE_DEVICE_TABLE(of, st_uvis25_i2c_of_match); 47 48 static const struct i2c_device_id st_uvis25_i2c_id_table[] = { 49 { ST_UVIS25_DEV_NAME }, 50 {}, 51 }; 52 MODULE_DEVICE_TABLE(i2c, st_uvis25_i2c_id_table); 53 54 static struct i2c_driver st_uvis25_driver = { 55 .driver = { 56 .name = "st_uvis25_i2c", 57 .pm = &st_uvis25_pm_ops, 58 .of_match_table = of_match_ptr(st_uvis25_i2c_of_match), 59 }, 60 .probe = st_uvis25_i2c_probe, 61 .id_table = st_uvis25_i2c_id_table, 62 }; 63 module_i2c_driver(st_uvis25_driver); 64 65 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>"); 66 MODULE_DESCRIPTION("STMicroelectronics uvis25 i2c driver"); 67 MODULE_LICENSE("GPL v2"); 68