1 // SPDX-License-Identifier: GPL-2.0-only 2 // 3 // CS35L56 ALSA SoC audio driver I2C binding 4 // 5 // Copyright (C) 2023 Cirrus Logic, Inc. and 6 // Cirrus Logic International Semiconductor Ltd. 7 8 #include <linux/acpi.h> 9 #include <linux/i2c.h> 10 #include <linux/module.h> 11 #include <linux/moduleparam.h> 12 #include <linux/regmap.h> 13 #include <linux/slab.h> 14 #include <linux/types.h> 15 16 #include "cs35l56.h" 17 18 static int cs35l56_i2c_probe(struct i2c_client *client) 19 { 20 struct cs35l56_private *cs35l56; 21 struct device *dev = &client->dev; 22 const struct regmap_config *regmap_config = &cs35l56_regmap_i2c; 23 int ret; 24 25 cs35l56 = devm_kzalloc(dev, sizeof(struct cs35l56_private), GFP_KERNEL); 26 if (!cs35l56) 27 return -ENOMEM; 28 29 cs35l56->base.dev = dev; 30 31 i2c_set_clientdata(client, cs35l56); 32 cs35l56->base.regmap = devm_regmap_init_i2c(client, regmap_config); 33 if (IS_ERR(cs35l56->base.regmap)) { 34 ret = PTR_ERR(cs35l56->base.regmap); 35 return dev_err_probe(cs35l56->base.dev, ret, "Failed to allocate register map\n"); 36 } 37 38 ret = cs35l56_common_probe(cs35l56); 39 if (ret != 0) 40 return ret; 41 42 ret = cs35l56_init(cs35l56); 43 if (ret == 0) 44 ret = cs35l56_irq_request(&cs35l56->base, client->irq); 45 if (ret < 0) 46 cs35l56_remove(cs35l56); 47 48 return ret; 49 } 50 51 static void cs35l56_i2c_remove(struct i2c_client *client) 52 { 53 struct cs35l56_private *cs35l56 = i2c_get_clientdata(client); 54 55 cs35l56_remove(cs35l56); 56 } 57 58 static const struct i2c_device_id cs35l56_id_i2c[] = { 59 { "cs35l56", 0 }, 60 {} 61 }; 62 MODULE_DEVICE_TABLE(i2c, cs35l56_id_i2c); 63 64 #ifdef CONFIG_ACPI 65 static const struct acpi_device_id cs35l56_asoc_acpi_match[] = { 66 { "CSC355C", 0 }, 67 {}, 68 }; 69 MODULE_DEVICE_TABLE(acpi, cs35l56_asoc_acpi_match); 70 #endif 71 72 static struct i2c_driver cs35l56_i2c_driver = { 73 .driver = { 74 .name = "cs35l56", 75 .pm = &cs35l56_pm_ops_i2c_spi, 76 .acpi_match_table = ACPI_PTR(cs35l56_asoc_acpi_match), 77 }, 78 .id_table = cs35l56_id_i2c, 79 .probe = cs35l56_i2c_probe, 80 .remove = cs35l56_i2c_remove, 81 }; 82 83 module_i2c_driver(cs35l56_i2c_driver); 84 85 MODULE_DESCRIPTION("ASoC CS35L56 I2C driver"); 86 MODULE_IMPORT_NS(SND_SOC_CS35L56_CORE); 87 MODULE_IMPORT_NS(SND_SOC_CS35L56_SHARED); 88 MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>"); 89 MODULE_AUTHOR("Simon Trimmer <simont@opensource.cirrus.com>"); 90 MODULE_LICENSE("GPL"); 91