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/*
* cs35l41-spi.c -- CS35l41 SPI driver
*
* Copyright 2017 Cirrus Logic, Inc.
* Copyright (C) 2019 XiaoMi, Inc.
*
* Author: David Rhodes <david.rhodes@cirrus.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/gpio.h>
#include <linux/spi/spi.h>
#include <linux/regulator/consumer.h>
#include "wm_adsp.h"
#include "cs35l41.h"
#include <sound/cs35l41.h>
static struct regmap_config cs35l41_regmap_spi = {
.reg_bits = 32,
.val_bits = 32,
.pad_bits = 16,
.reg_stride = 4,
.reg_format_endian = REGMAP_ENDIAN_BIG,
.val_format_endian = REGMAP_ENDIAN_BIG,
.max_register = CS35L41_LASTREG,
.reg_defaults = cs35l41_reg,
.num_reg_defaults = ARRAY_SIZE(cs35l41_reg),
.volatile_reg = cs35l41_volatile_reg,
.readable_reg = cs35l41_readable_reg,
.cache_type = REGCACHE_RBTREE,
};
static const struct spi_device_id cs35l41_id_spi[] = {
{"cs35l40", 0},
{"cs35l41", 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_platform_data *pdata =
dev_get_platdata(&spi->dev);
struct cs35l41_private *cs35l41;
int ret;
cs35l41 = devm_kzalloc(&spi->dev,
sizeof(struct cs35l41_private),
GFP_KERNEL);
if (cs35l41 == NULL)
return -ENOMEM;
spi_set_drvdata(spi, cs35l41);
cs35l41->regmap = devm_regmap_init_spi(spi, regmap_config);
if (IS_ERR(cs35l41->regmap)) {
ret = PTR_ERR(cs35l41->regmap);
dev_err(&spi->dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
cs35l41->dev = &spi->dev;
cs35l41->irq = spi->irq;
return cs35l41_probe(cs35l41, pdata);
}
static int cs35l41_spi_remove(struct spi_device *spi)
{
struct cs35l41_private *cs35l41 = spi_get_drvdata(spi);
regmap_write(cs35l41->regmap, CS35L41_IRQ1_MASK1, 0xFFFFFFFF);
wm_adsp2_remove(&cs35l41->dsp);
regulator_bulk_disable(cs35l41->num_supplies, cs35l41->supplies);
snd_soc_unregister_codec(cs35l41->dev);
return 0;
}
static const struct of_device_id cs35l41_of_match[] = {
{.compatible = "cirrus,cs35l40"},
{.compatible = "cirrus,cs35l41"},
{},
};
MODULE_DEVICE_TABLE(of, cs35l41_of_match);
static struct spi_driver cs35l41_spi_driver = {
.driver = {
.name = "cs35l41",
.of_match_table = cs35l41_of_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");
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