1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 // 3 // cs35l45-spi.c -- CS35L45 SPI driver 4 // 5 // Copyright 2019-2022 Cirrus Logic, Inc. 6 // 7 // Author: James Schulman <james.schulman@cirrus.com> 8 9 #include <linux/device.h> 10 #include <linux/module.h> 11 #include <linux/regmap.h> 12 #include <linux/spi/spi.h> 13 14 #include "cs35l45.h" 15 16 static int cs35l45_spi_probe(struct spi_device *spi) 17 { 18 struct cs35l45_private *cs35l45; 19 struct device *dev = &spi->dev; 20 int ret; 21 22 cs35l45 = devm_kzalloc(dev, sizeof(struct cs35l45_private), GFP_KERNEL); 23 if (cs35l45 == NULL) 24 return -ENOMEM; 25 26 spi_set_drvdata(spi, cs35l45); 27 cs35l45->regmap = devm_regmap_init_spi(spi, &cs35l45_spi_regmap); 28 if (IS_ERR(cs35l45->regmap)) { 29 ret = PTR_ERR(cs35l45->regmap); 30 dev_err(dev, "Failed to allocate register map: %d\n", ret); 31 return ret; 32 } 33 34 cs35l45->dev = dev; 35 36 return cs35l45_probe(cs35l45); 37 } 38 39 static void cs35l45_spi_remove(struct spi_device *spi) 40 { 41 struct cs35l45_private *cs35l45 = spi_get_drvdata(spi); 42 43 cs35l45_remove(cs35l45); 44 } 45 46 static const struct of_device_id cs35l45_of_match[] = { 47 { .compatible = "cirrus,cs35l45" }, 48 {}, 49 }; 50 MODULE_DEVICE_TABLE(of, cs35l45_of_match); 51 52 static const struct spi_device_id cs35l45_id_spi[] = { 53 { "cs35l45", 0 }, 54 {} 55 }; 56 MODULE_DEVICE_TABLE(spi, cs35l45_id_spi); 57 58 static struct spi_driver cs35l45_spi_driver = { 59 .driver = { 60 .name = "cs35l45", 61 .of_match_table = cs35l45_of_match, 62 .pm = &cs35l45_pm_ops, 63 }, 64 .id_table = cs35l45_id_spi, 65 .probe = cs35l45_spi_probe, 66 .remove = cs35l45_spi_remove, 67 }; 68 module_spi_driver(cs35l45_spi_driver); 69 70 MODULE_DESCRIPTION("SPI CS35L45 driver"); 71 MODULE_AUTHOR("James Schulman, Cirrus Logic Inc, <james.schulman@cirrus.com>"); 72 MODULE_LICENSE("Dual BSD/GPL"); 73 MODULE_IMPORT_NS(SND_SOC_CS35L45); 74