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1// SPDX-License-Identifier: GPL-2.02//3// cs35l41-i2c.c -- CS35l41 I2C 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/i2c.h>12#include <linux/init.h>13#include <linux/kernel.h>14#include <linux/module.h>15#include <linux/moduleparam.h>16#include <linux/of.h>17#include <linux/platform_device.h>18#include <linux/slab.h>19 20#include "cs35l41.h"21 22static const struct i2c_device_id cs35l41_id_i2c[] = {23 { "cs35l40" },24 { "cs35l41" },25 { "cs35l51" },26 { "cs35l53" },27 {}28};29 30MODULE_DEVICE_TABLE(i2c, cs35l41_id_i2c);31 32static int cs35l41_i2c_probe(struct i2c_client *client)33{34 struct cs35l41_private *cs35l41;35 struct device *dev = &client->dev;36 struct cs35l41_hw_cfg *hw_cfg = dev_get_platdata(dev);37 const struct regmap_config *regmap_config = &cs35l41_regmap_i2c;38 39 cs35l41 = devm_kzalloc(dev, sizeof(struct cs35l41_private), GFP_KERNEL);40 41 if (!cs35l41)42 return -ENOMEM;43 44 cs35l41->dev = dev;45 cs35l41->irq = client->irq;46 47 i2c_set_clientdata(client, cs35l41);48 cs35l41->regmap = devm_regmap_init_i2c(client, regmap_config);49 if (IS_ERR(cs35l41->regmap))50 return dev_err_probe(cs35l41->dev, PTR_ERR(cs35l41->regmap),51 "Failed to allocate register map\n");52 53 return cs35l41_probe(cs35l41, hw_cfg);54}55 56static void cs35l41_i2c_remove(struct i2c_client *client)57{58 struct cs35l41_private *cs35l41 = i2c_get_clientdata(client);59 60 cs35l41_remove(cs35l41);61}62 63#ifdef CONFIG_OF64static const struct of_device_id cs35l41_of_match[] = {65 { .compatible = "cirrus,cs35l40" },66 { .compatible = "cirrus,cs35l41" },67 {},68};69MODULE_DEVICE_TABLE(of, cs35l41_of_match);70#endif71 72#ifdef CONFIG_ACPI73static const struct acpi_device_id cs35l41_acpi_match[] = {74 { "CSC3541", 0 }, /* Cirrus Logic PnP ID + part ID */75 {},76};77MODULE_DEVICE_TABLE(acpi, cs35l41_acpi_match);78#endif79 80static struct i2c_driver cs35l41_i2c_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_i2c,88 .probe = cs35l41_i2c_probe,89 .remove = cs35l41_i2c_remove,90};91 92module_i2c_driver(cs35l41_i2c_driver);93 94MODULE_DESCRIPTION("I2C CS35L41 driver");95MODULE_AUTHOR("David Rhodes, Cirrus Logic Inc, <david.rhodes@cirrus.com>");96MODULE_LICENSE("GPL");97