1 // SPDX-License-Identifier: GPL-2.0-only 2 // 3 // CS35L56 HDA audio driver I2C binding 4 // 5 // Copyright (C) 2023 Cirrus Logic, Inc. and 6 // Cirrus Logic International Semiconductor Ltd. 7 8 #include <linux/i2c.h> 9 #include <linux/module.h> 10 #include <linux/regmap.h> 11 12 #include "cs35l56_hda.h" 13 14 static int cs35l56_hda_i2c_probe(struct i2c_client *clt) 15 { 16 struct cs35l56_hda *cs35l56; 17 int ret; 18 19 cs35l56 = devm_kzalloc(&clt->dev, sizeof(*cs35l56), GFP_KERNEL); 20 if (!cs35l56) 21 return -ENOMEM; 22 23 cs35l56->base.dev = &clt->dev; 24 25 #ifdef CS35L56_WAKE_HOLD_TIME_US 26 cs35l56->base.can_hibernate = true; 27 #endif 28 cs35l56->base.regmap = devm_regmap_init_i2c(clt, &cs35l56_regmap_i2c); 29 if (IS_ERR(cs35l56->base.regmap)) { 30 ret = PTR_ERR(cs35l56->base.regmap); 31 dev_err(cs35l56->base.dev, "Failed to allocate register map: %d\n", 32 ret); 33 return ret; 34 } 35 36 ret = cs35l56_hda_common_probe(cs35l56, clt->addr); 37 if (ret) 38 return ret; 39 ret = cs35l56_irq_request(&cs35l56->base, clt->irq); 40 if (ret < 0) 41 cs35l56_hda_remove(cs35l56->base.dev); 42 43 return ret; 44 } 45 46 static void cs35l56_hda_i2c_remove(struct i2c_client *clt) 47 { 48 cs35l56_hda_remove(&clt->dev); 49 } 50 51 static const struct i2c_device_id cs35l56_hda_i2c_id[] = { 52 { "cs35l56-hda", 0 }, 53 {} 54 }; 55 56 static struct i2c_driver cs35l56_hda_i2c_driver = { 57 .driver = { 58 .name = "cs35l56-hda", 59 .pm = &cs35l56_hda_pm_ops, 60 }, 61 .id_table = cs35l56_hda_i2c_id, 62 .probe = cs35l56_hda_i2c_probe, 63 .remove = cs35l56_hda_i2c_remove, 64 }; 65 module_i2c_driver(cs35l56_hda_i2c_driver); 66 67 MODULE_DESCRIPTION("HDA CS35L56 I2C driver"); 68 MODULE_IMPORT_NS(SND_HDA_SCODEC_CS35L56); 69 MODULE_IMPORT_NS(SND_SOC_CS35L56_SHARED); 70 MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>"); 71 MODULE_AUTHOR("Simon Trimmer <simont@opensource.cirrus.com>"); 72 MODULE_LICENSE("GPL"); 73