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 unsigned int id = (u32)(uintptr_t)i2c_get_match_data(client); 21 struct cs35l56_private *cs35l56; 22 struct device *dev = &client->dev; 23 const struct regmap_config *regmap_config; 24 int ret; 25 26 cs35l56 = devm_kzalloc(dev, sizeof(struct cs35l56_private), GFP_KERNEL); 27 if (!cs35l56) 28 return -ENOMEM; 29 30 cs35l56->base.dev = dev; 31 cs35l56->base.can_hibernate = true; 32 33 i2c_set_clientdata(client, cs35l56); 34 35 switch (id) { 36 case 0x3556: 37 regmap_config = &cs35l56_regmap_i2c; 38 cs35l56->base.fw_reg = &cs35l56_fw_reg; 39 break; 40 case 0x3563: 41 regmap_config = &cs35l63_regmap_i2c; 42 cs35l56->base.fw_reg = &cs35l63_fw_reg; 43 break; 44 default: 45 return -ENODEV; 46 } 47 48 cs35l56->base.regmap = devm_regmap_init_i2c(client, regmap_config); 49 if (IS_ERR(cs35l56->base.regmap)) { 50 ret = PTR_ERR(cs35l56->base.regmap); 51 return dev_err_probe(cs35l56->base.dev, ret, "Failed to allocate register map\n"); 52 } 53 54 ret = cs35l56_common_probe(cs35l56); 55 if (ret != 0) 56 return ret; 57 58 ret = cs35l56_init(cs35l56); 59 if (ret == 0) 60 ret = cs35l56_irq_request(&cs35l56->base, client->irq); 61 if (ret < 0) 62 cs35l56_remove(cs35l56); 63 64 return ret; 65 } 66 67 static void cs35l56_i2c_remove(struct i2c_client *client) 68 { 69 struct cs35l56_private *cs35l56 = i2c_get_clientdata(client); 70 71 cs35l56_remove(cs35l56); 72 } 73 74 static const struct i2c_device_id cs35l56_id_i2c[] = { 75 { "cs35l56", 0x3556 }, 76 { "cs35l63", 0x3563 }, 77 {} 78 }; 79 MODULE_DEVICE_TABLE(i2c, cs35l56_id_i2c); 80 81 #ifdef CONFIG_ACPI 82 static const struct acpi_device_id cs35l56_asoc_acpi_match[] = { 83 { "CSC355C", 0x3556 }, 84 { "CSC356C", 0x3563 }, 85 {}, 86 }; 87 MODULE_DEVICE_TABLE(acpi, cs35l56_asoc_acpi_match); 88 #endif 89 90 static struct i2c_driver cs35l56_i2c_driver = { 91 .driver = { 92 .name = "cs35l56", 93 .pm = pm_ptr(&cs35l56_pm_ops_i2c_spi), 94 .acpi_match_table = ACPI_PTR(cs35l56_asoc_acpi_match), 95 }, 96 .id_table = cs35l56_id_i2c, 97 .probe = cs35l56_i2c_probe, 98 .remove = cs35l56_i2c_remove, 99 }; 100 101 module_i2c_driver(cs35l56_i2c_driver); 102 103 MODULE_DESCRIPTION("ASoC CS35L56 I2C driver"); 104 MODULE_IMPORT_NS("SND_SOC_CS35L56_CORE"); 105 MODULE_IMPORT_NS("SND_SOC_CS35L56_SHARED"); 106 MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>"); 107 MODULE_AUTHOR("Simon Trimmer <simont@opensource.cirrus.com>"); 108 MODULE_LICENSE("GPL"); 109