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1// SPDX-License-Identifier: GPL-2.02//3// cs35l41-spi.c -- CS35l41 SPI driver4//5// Copyright 2017-2021 Cirrus Logic, Inc.6//7// Author: David Rhodes <david.rhodes@cirrus.com>8 9#include <linux/acpi.h>10#include <linux/delay.h>11#include <linux/init.h>12#include <linux/kernel.h>13#include <linux/module.h>14#include <linux/moduleparam.h>15#include <linux/platform_device.h>16#include <linux/spi/spi.h>17 18#include "cs35l41.h"19 20static const struct spi_device_id cs35l41_id_spi[] = {21 { "cs35l40", 0 },22 { "cs35l41", 0 },23 { "cs35l51", 0 },24 { "cs35l53", 0 },25 {}26};27 28MODULE_DEVICE_TABLE(spi, cs35l41_id_spi);29 30static int cs35l41_spi_probe(struct spi_device *spi)31{32 const struct regmap_config *regmap_config = &cs35l41_regmap_spi;33 struct cs35l41_hw_cfg *hw_cfg = dev_get_platdata(&spi->dev);34 struct cs35l41_private *cs35l41;35 36 cs35l41 = devm_kzalloc(&spi->dev, sizeof(struct cs35l41_private), GFP_KERNEL);37 if (!cs35l41)38 return -ENOMEM;39 40 spi->max_speed_hz = CS35L41_SPI_MAX_FREQ;41 spi_setup(spi);42 43 spi_set_drvdata(spi, cs35l41);44 cs35l41->regmap = devm_regmap_init_spi(spi, regmap_config);45 if (IS_ERR(cs35l41->regmap))46 return dev_err_probe(cs35l41->dev, PTR_ERR(cs35l41->regmap),47 "Failed to allocate register map\n");48 49 cs35l41->dev = &spi->dev;50 cs35l41->irq = spi->irq;51 52 return cs35l41_probe(cs35l41, hw_cfg);53}54 55static void cs35l41_spi_remove(struct spi_device *spi)56{57 struct cs35l41_private *cs35l41 = spi_get_drvdata(spi);58 59 cs35l41_remove(cs35l41);60}61 62#ifdef CONFIG_OF63static const struct of_device_id cs35l41_of_match[] = {64 { .compatible = "cirrus,cs35l40" },65 { .compatible = "cirrus,cs35l41" },66 {},67};68MODULE_DEVICE_TABLE(of, cs35l41_of_match);69#endif70 71#ifdef CONFIG_ACPI72static const struct acpi_device_id cs35l41_acpi_match[] = {73 { "CSC3541", 0 }, /* Cirrus Logic PnP ID + part ID */74 { "CLSA3541", 0 }, /* Cirrus Logic PnP ID + part ID */75 {},76};77MODULE_DEVICE_TABLE(acpi, cs35l41_acpi_match);78#endif79 80static struct spi_driver cs35l41_spi_driver = {81 .driver = {82 .name = "cs35l41",83 .pm = pm_ptr(&cs35l41_pm_ops),84 .of_match_table = of_match_ptr(cs35l41_of_match),85 .acpi_match_table = ACPI_PTR(cs35l41_acpi_match),86 },87 .id_table = cs35l41_id_spi,88 .probe = cs35l41_spi_probe,89 .remove = cs35l41_spi_remove,90};91 92module_spi_driver(cs35l41_spi_driver);93 94MODULE_DESCRIPTION("SPI CS35L41 driver");95MODULE_AUTHOR("David Rhodes, Cirrus Logic Inc, <david.rhodes@cirrus.com>");96MODULE_LICENSE("GPL");97