1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // cs35l45-i2c.c -- CS35L45 I2C driver 4 // 5 // Copyright 2019-2022 Cirrus Logic, Inc. 6 // 7 // Author: James Schulman <james.schulman@cirrus.com> 8 9 #include <linux/device.h> 10 #include <linux/module.h> 11 #include <linux/i2c.h> 12 #include <linux/regmap.h> 13 14 #include "cs35l45.h" 15 16 static int cs35l45_i2c_probe(struct i2c_client *client) 17 { 18 struct cs35l45_private *cs35l45; 19 struct device *dev = &client->dev; 20 int ret; 21 22 cs35l45 = devm_kzalloc(dev, sizeof(struct cs35l45_private), GFP_KERNEL); 23 if (!cs35l45) 24 return -ENOMEM; 25 26 i2c_set_clientdata(client, cs35l45); 27 cs35l45->regmap = devm_regmap_init_i2c(client, &cs35l45_i2c_regmap); 28 if (IS_ERR(cs35l45->regmap)) { 29 ret = PTR_ERR(cs35l45->regmap); 30 dev_err(dev, "Failed to allocate register map: %d\n", ret); 31 return ret; 32 } 33 34 cs35l45->dev = dev; 35 cs35l45->irq = client->irq; 36 cs35l45->bus_type = CONTROL_BUS_I2C; 37 cs35l45->i2c_addr = client->addr; 38 39 return cs35l45_probe(cs35l45); 40 } 41 42 static void cs35l45_i2c_remove(struct i2c_client *client) 43 { 44 struct cs35l45_private *cs35l45 = i2c_get_clientdata(client); 45 46 cs35l45_remove(cs35l45); 47 } 48 49 static const struct of_device_id cs35l45_of_match[] = { 50 { .compatible = "cirrus,cs35l45" }, 51 {}, 52 }; 53 MODULE_DEVICE_TABLE(of, cs35l45_of_match); 54 55 static const struct i2c_device_id cs35l45_id_i2c[] = { 56 { "cs35l45", 0 }, 57 {} 58 }; 59 MODULE_DEVICE_TABLE(i2c, cs35l45_id_i2c); 60 61 static struct i2c_driver cs35l45_i2c_driver = { 62 .driver = { 63 .name = "cs35l45", 64 .of_match_table = cs35l45_of_match, 65 .pm = pm_ptr(&cs35l45_pm_ops), 66 }, 67 .id_table = cs35l45_id_i2c, 68 .probe = cs35l45_i2c_probe, 69 .remove = cs35l45_i2c_remove, 70 }; 71 module_i2c_driver(cs35l45_i2c_driver); 72 73 MODULE_DESCRIPTION("I2C CS35L45 driver"); 74 MODULE_AUTHOR("James Schulman, Cirrus Logic Inc, <james.schulman@cirrus.com>"); 75 MODULE_LICENSE("GPL"); 76 MODULE_IMPORT_NS(SND_SOC_CS35L45); 77