| // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) |
| /* |
| * cs35l45-spi.c -- CS35L45 SPI driver |
| * |
| * Copyright 2019 Cirrus Logic, Inc. |
| * |
| * Author: James Schulman <james.schulman@cirrus.com> |
| * |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/spi/spi.h> |
| #include <linux/regulator/consumer.h> |
| |
| #include "wm_adsp.h" |
| #include "cs35l45.h" |
| #include <sound/cs35l45.h> |
| |
| static int cs35l45_spi_probe(struct spi_device *spi) |
| { |
| struct cs35l45_private *cs35l45; |
| struct device *dev = &spi->dev; |
| int ret; |
| |
| cs35l45 = devm_kzalloc(dev, sizeof(struct cs35l45_private), GFP_KERNEL); |
| if (cs35l45 == NULL) |
| return -ENOMEM; |
| |
| spi_set_drvdata(spi, cs35l45); |
| cs35l45->regmap = devm_regmap_init_spi(spi, &cs35l45_spi_regmap); |
| if (IS_ERR(cs35l45->regmap)) { |
| ret = PTR_ERR(cs35l45->regmap); |
| dev_err(dev, "Failed to allocate register map: %d\n", ret); |
| return ret; |
| } |
| |
| cs35l45->dev = dev; |
| cs35l45->irq = spi->irq; |
| cs35l45->bus_type = CONTROL_BUS_SPI; |
| |
| ret = cs35l45_probe(cs35l45); |
| if (ret < 0) { |
| dev_err(dev, "Failed device probe: %d\n", ret); |
| return ret; |
| } |
| |
| usleep_range(2000, 2100); |
| |
| ret = cs35l45_initialize(cs35l45); |
| if (ret < 0) { |
| dev_err(dev, "Failed device initialization: %d\n", ret); |
| goto fail; |
| } |
| |
| return 0; |
| fail: |
| cs35l45_remove(cs35l45); |
| return ret; |
| } |
| |
| static int cs35l45_spi_remove(struct spi_device *spi) |
| { |
| struct cs35l45_private *cs35l45 = spi_get_drvdata(spi); |
| |
| return cs35l45_remove(cs35l45); |
| } |
| |
| static const struct of_device_id cs35l45_of_match[] = { |
| {.compatible = "cirrus,cs35l45"}, |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(of, cs35l45_of_match); |
| |
| static const struct spi_device_id cs35l45_id_spi[] = { |
| {"cs35l45", 0}, |
| {} |
| }; |
| MODULE_DEVICE_TABLE(spi, cs35l45_id_spi); |
| |
| static struct spi_driver cs35l45_spi_driver = { |
| .driver = { |
| .name = "cs35l45", |
| .of_match_table = cs35l45_of_match, |
| }, |
| .id_table = cs35l45_id_spi, |
| .probe = cs35l45_spi_probe, |
| .remove = cs35l45_spi_remove, |
| }; |
| module_spi_driver(cs35l45_spi_driver); |
| |
| MODULE_DESCRIPTION("SPI CS35L45 driver"); |
| MODULE_AUTHOR("James Schulman, Cirrus Logic Inc, <james.schulman@cirrus.com>"); |
| MODULE_LICENSE("GPL"); |