1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * ADXL313 3-Axis Digital Accelerometer 4 * 5 * Copyright (c) 2021 Lucas Stankus <lucas.p.stankus@gmail.com> 6 * 7 * Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADXL313.pdf 8 */ 9 10 #include <linux/i2c.h> 11 #include <linux/mod_devicetable.h> 12 #include <linux/module.h> 13 #include <linux/regmap.h> 14 15 #include "adxl313.h" 16 17 static const struct regmap_config adxl31x_i2c_regmap_config[] = { 18 [ADXL312] = { 19 .reg_bits = 8, 20 .val_bits = 8, 21 .rd_table = &adxl312_readable_regs_table, 22 .wr_table = &adxl312_writable_regs_table, 23 .max_register = 0x39, 24 .volatile_reg = adxl313_is_volatile_reg, 25 .cache_type = REGCACHE_MAPLE, 26 }, 27 [ADXL313] = { 28 .reg_bits = 8, 29 .val_bits = 8, 30 .rd_table = &adxl313_readable_regs_table, 31 .wr_table = &adxl313_writable_regs_table, 32 .max_register = 0x39, 33 .volatile_reg = adxl313_is_volatile_reg, 34 .cache_type = REGCACHE_MAPLE, 35 }, 36 [ADXL314] = { 37 .reg_bits = 8, 38 .val_bits = 8, 39 .rd_table = &adxl314_readable_regs_table, 40 .wr_table = &adxl314_writable_regs_table, 41 .max_register = 0x39, 42 .volatile_reg = adxl313_is_volatile_reg, 43 .cache_type = REGCACHE_MAPLE, 44 }, 45 }; 46 47 static const struct i2c_device_id adxl313_i2c_id[] = { 48 { .name = "adxl312", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL312] }, 49 { .name = "adxl313", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL313] }, 50 { .name = "adxl314", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL314] }, 51 { } 52 }; 53 54 MODULE_DEVICE_TABLE(i2c, adxl313_i2c_id); 55 56 static const struct of_device_id adxl313_of_match[] = { 57 { .compatible = "adi,adxl312", .data = &adxl31x_chip_info[ADXL312] }, 58 { .compatible = "adi,adxl313", .data = &adxl31x_chip_info[ADXL313] }, 59 { .compatible = "adi,adxl314", .data = &adxl31x_chip_info[ADXL314] }, 60 { } 61 }; 62 63 MODULE_DEVICE_TABLE(of, adxl313_of_match); 64 65 static int adxl313_i2c_probe(struct i2c_client *client) 66 { 67 const struct adxl313_chip_info *chip_data; 68 struct regmap *regmap; 69 70 /* 71 * Retrieves device specific data as a pointer to a 72 * adxl313_chip_info structure 73 */ 74 chip_data = i2c_get_match_data(client); 75 76 regmap = devm_regmap_init_i2c(client, 77 &adxl31x_i2c_regmap_config[chip_data->type]); 78 if (IS_ERR(regmap)) { 79 dev_err(&client->dev, "Error initializing i2c regmap: %ld\n", 80 PTR_ERR(regmap)); 81 return PTR_ERR(regmap); 82 } 83 84 return adxl313_core_probe(&client->dev, regmap, chip_data, NULL); 85 } 86 87 static struct i2c_driver adxl313_i2c_driver = { 88 .driver = { 89 .name = "adxl313_i2c", 90 .of_match_table = adxl313_of_match, 91 }, 92 .probe = adxl313_i2c_probe, 93 .id_table = adxl313_i2c_id, 94 }; 95 96 module_i2c_driver(adxl313_i2c_driver); 97 98 MODULE_AUTHOR("Lucas Stankus <lucas.p.stankus@gmail.com>"); 99 MODULE_DESCRIPTION("ADXL313 3-Axis Digital Accelerometer I2C driver"); 100 MODULE_LICENSE("GPL v2"); 101 MODULE_IMPORT_NS("IIO_ADXL313"); 102