1 // SPDX-License-Identifier: GPL-2.0-only 2 // 3 // CS35L56 ALSA SoC audio driver SPI 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/module.h> 10 #include <linux/moduleparam.h> 11 #include <linux/regmap.h> 12 #include <linux/spi/spi.h> 13 #include <linux/types.h> 14 15 #include "cs35l56.h" 16 17 static int cs35l56_spi_probe(struct spi_device *spi) 18 { 19 const struct regmap_config *regmap_config = &cs35l56_regmap_spi; 20 struct cs35l56_private *cs35l56; 21 int ret; 22 23 cs35l56 = devm_kzalloc(&spi->dev, sizeof(struct cs35l56_private), GFP_KERNEL); 24 if (!cs35l56) 25 return -ENOMEM; 26 27 spi_set_drvdata(spi, cs35l56); 28 cs35l56->base.regmap = devm_regmap_init_spi(spi, regmap_config); 29 if (IS_ERR(cs35l56->base.regmap)) { 30 ret = PTR_ERR(cs35l56->base.regmap); 31 return dev_err_probe(&spi->dev, ret, "Failed to allocate register map\n"); 32 } 33 34 cs35l56->base.dev = &spi->dev; 35 36 ret = cs35l56_common_probe(cs35l56); 37 if (ret != 0) 38 return ret; 39 40 ret = cs35l56_init(cs35l56); 41 if (ret == 0) 42 ret = cs35l56_irq_request(&cs35l56->base, spi->irq); 43 if (ret < 0) 44 cs35l56_remove(cs35l56); 45 46 return ret; 47 } 48 49 static void cs35l56_spi_remove(struct spi_device *spi) 50 { 51 struct cs35l56_private *cs35l56 = spi_get_drvdata(spi); 52 53 cs35l56_remove(cs35l56); 54 } 55 56 static const struct spi_device_id cs35l56_id_spi[] = { 57 { "cs35l56", 0 }, 58 {} 59 }; 60 MODULE_DEVICE_TABLE(spi, cs35l56_id_spi); 61 62 #ifdef CONFIG_ACPI 63 static const struct acpi_device_id cs35l56_asoc_acpi_match[] = { 64 { "CSC355C", 0 }, 65 {}, 66 }; 67 MODULE_DEVICE_TABLE(acpi, cs35l56_asoc_acpi_match); 68 #endif 69 70 static struct spi_driver cs35l56_spi_driver = { 71 .driver = { 72 .name = "cs35l56", 73 .pm = &cs35l56_pm_ops_i2c_spi, 74 .acpi_match_table = ACPI_PTR(cs35l56_asoc_acpi_match), 75 }, 76 .id_table = cs35l56_id_spi, 77 .probe = cs35l56_spi_probe, 78 .remove = cs35l56_spi_remove, 79 }; 80 81 module_spi_driver(cs35l56_spi_driver); 82 83 MODULE_DESCRIPTION("ASoC CS35L56 SPI driver"); 84 MODULE_IMPORT_NS(SND_SOC_CS35L56_CORE); 85 MODULE_IMPORT_NS(SND_SOC_CS35L56_SHARED); 86 MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>"); 87 MODULE_AUTHOR("Simon Trimmer <simont@opensource.cirrus.com>"); 88 MODULE_LICENSE("GPL"); 89