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 cs35l56->base.can_hibernate = true; 36 37 ret = cs35l56_common_probe(cs35l56); 38 if (ret != 0) 39 return ret; 40 41 ret = cs35l56_init(cs35l56); 42 if (ret == 0) 43 ret = cs35l56_irq_request(&cs35l56->base, spi->irq); 44 if (ret < 0) 45 cs35l56_remove(cs35l56); 46 47 return ret; 48 } 49 50 static void cs35l56_spi_remove(struct spi_device *spi) 51 { 52 struct cs35l56_private *cs35l56 = spi_get_drvdata(spi); 53 54 cs35l56_remove(cs35l56); 55 } 56 57 static const struct spi_device_id cs35l56_id_spi[] = { 58 { "cs35l56", 0 }, 59 {} 60 }; 61 MODULE_DEVICE_TABLE(spi, cs35l56_id_spi); 62 63 #ifdef CONFIG_ACPI 64 static const struct acpi_device_id cs35l56_asoc_acpi_match[] = { 65 { "CSC355C", 0 }, 66 {}, 67 }; 68 MODULE_DEVICE_TABLE(acpi, cs35l56_asoc_acpi_match); 69 #endif 70 71 static struct spi_driver cs35l56_spi_driver = { 72 .driver = { 73 .name = "cs35l56", 74 .pm = pm_ptr(&cs35l56_pm_ops_i2c_spi), 75 .acpi_match_table = ACPI_PTR(cs35l56_asoc_acpi_match), 76 }, 77 .id_table = cs35l56_id_spi, 78 .probe = cs35l56_spi_probe, 79 .remove = cs35l56_spi_remove, 80 }; 81 82 module_spi_driver(cs35l56_spi_driver); 83 84 MODULE_DESCRIPTION("ASoC CS35L56 SPI driver"); 85 MODULE_IMPORT_NS(SND_SOC_CS35L56_CORE); 86 MODULE_IMPORT_NS(SND_SOC_CS35L56_SHARED); 87 MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>"); 88 MODULE_AUTHOR("Simon Trimmer <simont@opensource.cirrus.com>"); 89 MODULE_LICENSE("GPL"); 90