1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * cs42l42-i2c.c -- CS42L42 ALSA SoC audio driver for I2C 4 * 5 * Copyright 2016, 2022 Cirrus Logic, Inc. 6 */ 7 8 #include <linux/i2c.h> 9 #include <linux/module.h> 10 #include <linux/regmap.h> 11 #include <linux/slab.h> 12 #include <linux/types.h> 13 14 #include "cs42l42.h" 15 16 static int cs42l42_i2c_probe(struct i2c_client *i2c_client) 17 { 18 struct device *dev = &i2c_client->dev; 19 struct cs42l42_private *cs42l42; 20 struct regmap *regmap; 21 int ret; 22 23 cs42l42 = devm_kzalloc(dev, sizeof(*cs42l42), GFP_KERNEL); 24 if (!cs42l42) 25 return -ENOMEM; 26 27 regmap = devm_regmap_init_i2c(i2c_client, &cs42l42_regmap); 28 if (IS_ERR(regmap)) 29 return dev_err_probe(&i2c_client->dev, PTR_ERR(regmap), 30 "regmap_init() failed\n"); 31 32 cs42l42->devid = CS42L42_CHIP_ID; 33 cs42l42->dev = dev; 34 cs42l42->regmap = regmap; 35 cs42l42->irq = i2c_client->irq; 36 37 ret = cs42l42_common_probe(cs42l42, &cs42l42_soc_component, &cs42l42_dai); 38 if (ret) 39 return ret; 40 41 return cs42l42_init(cs42l42); 42 } 43 44 static int cs42l42_i2c_remove(struct i2c_client *i2c_client) 45 { 46 struct cs42l42_private *cs42l42 = dev_get_drvdata(&i2c_client->dev); 47 48 cs42l42_common_remove(cs42l42); 49 50 return 0; 51 } 52 53 static int __maybe_unused cs42l42_i2c_resume(struct device *dev) 54 { 55 int ret; 56 57 ret = cs42l42_resume(dev); 58 if (ret) 59 return ret; 60 61 cs42l42_resume_restore(dev); 62 63 return 0; 64 } 65 66 static const struct dev_pm_ops cs42l42_i2c_pm_ops = { 67 SET_SYSTEM_SLEEP_PM_OPS(cs42l42_suspend, cs42l42_i2c_resume) 68 }; 69 70 static const struct of_device_id __maybe_unused cs42l42_of_match[] = { 71 { .compatible = "cirrus,cs42l42", }, 72 {} 73 }; 74 MODULE_DEVICE_TABLE(of, cs42l42_of_match); 75 76 static const struct acpi_device_id __maybe_unused cs42l42_acpi_match[] = { 77 {"10134242", 0,}, 78 {} 79 }; 80 MODULE_DEVICE_TABLE(acpi, cs42l42_acpi_match); 81 82 static const struct i2c_device_id cs42l42_id[] = { 83 {"cs42l42", 0}, 84 {} 85 }; 86 87 MODULE_DEVICE_TABLE(i2c, cs42l42_id); 88 89 static struct i2c_driver cs42l42_i2c_driver = { 90 .driver = { 91 .name = "cs42l42", 92 .pm = &cs42l42_i2c_pm_ops, 93 .of_match_table = of_match_ptr(cs42l42_of_match), 94 .acpi_match_table = ACPI_PTR(cs42l42_acpi_match), 95 }, 96 .id_table = cs42l42_id, 97 .probe_new = cs42l42_i2c_probe, 98 .remove = cs42l42_i2c_remove, 99 }; 100 101 module_i2c_driver(cs42l42_i2c_driver); 102 103 MODULE_DESCRIPTION("ASoC CS42L42 I2C driver"); 104 MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>"); 105 MODULE_LICENSE("GPL"); 106 MODULE_IMPORT_NS(SND_SOC_CS42L42_CORE); 107