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// SPDX-License-Identifier: GPL-2.0 // // cs35l41-spi.c -- CS35l41 SPI driver // // Copyright 2017-2021 Cirrus Logic, Inc. // // Author: David Rhodes <david.rhodes@cirrus.com> #include <linux/acpi.h> #include <linux/delay.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/platform_device.h> #include <linux/spi/spi.h> #include "cs35l41.h" static const struct spi_device_id cs35l41_id_spi[] = { { "cs35l40", 0 }, { "cs35l41", 0 }, { "cs35l51", 0 }, { "cs35l53", 0 }, {} }; MODULE_DEVICE_TABLE(spi, cs35l41_id_spi); static int cs35l41_spi_probe(struct spi_device *spi) { const struct regmap_config *regmap_config = &cs35l41_regmap_spi; struct cs35l41_hw_cfg *hw_cfg = dev_get_platdata(&spi->dev); struct cs35l41_private *cs35l41; cs35l41 = devm_kzalloc(&spi->dev, sizeof(struct cs35l41_private), GFP_KERNEL); if (!cs35l41) return -ENOMEM; spi->max_speed_hz = CS35L41_SPI_MAX_FREQ; spi_setup(spi); spi_set_drvdata(spi, cs35l41); cs35l41->regmap = devm_regmap_init_spi(spi, regmap_config); if (IS_ERR(cs35l41->regmap)) return dev_err_probe(cs35l41->dev, PTR_ERR(cs35l41->regmap), "Failed to allocate register map\n"); cs35l41->dev = &spi->dev; cs35l41->irq = spi->irq; return cs35l41_probe(cs35l41, hw_cfg); } static void cs35l41_spi_remove(struct spi_device *spi) { struct cs35l41_private *cs35l41 = spi_get_drvdata(spi); cs35l41_remove(cs35l41); } #ifdef CONFIG_OF static const struct of_device_id cs35l41_of_match[] = { { .compatible = "cirrus,cs35l40" }, { .compatible = "cirrus,cs35l41" }, {}, }; MODULE_DEVICE_TABLE(of, cs35l41_of_match); #endif #ifdef CONFIG_ACPI static const struct acpi_device_id cs35l41_acpi_match[] = { { "CSC3541", 0 }, /* Cirrus Logic PnP ID + part ID */ { "CLSA3541", 0 }, /* Cirrus Logic PnP ID + part ID */ {}, }; MODULE_DEVICE_TABLE(acpi, cs35l41_acpi_match); #endif static struct spi_driver cs35l41_spi_driver = { .driver = { .name = "cs35l41", .pm = pm_ptr(&cs35l41_pm_ops), .of_match_table = of_match_ptr(cs35l41_of_match), .acpi_match_table = ACPI_PTR(cs35l41_acpi_match), }, .id_table = cs35l41_id_spi, .probe = cs35l41_spi_probe, .remove = cs35l41_spi_remove, }; module_spi_driver(cs35l41_spi_driver); MODULE_DESCRIPTION("SPI CS35L41 driver"); MODULE_AUTHOR("David Rhodes, Cirrus Logic Inc, <david.rhodes@cirrus.com>"); MODULE_LICENSE("GPL"); |