forked from rrcarlosr/Jetpack
119 lines
2.7 KiB
C
119 lines
2.7 KiB
C
/*
|
|
* arizona-spi.c -- Arizona SPI bus interface
|
|
*
|
|
* Copyright 2012 Wolfson Microelectronics plc
|
|
*
|
|
* Author: Mark Brown <broonie@opensource.wolfsonmicro.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/err.h>
|
|
#include <linux/module.h>
|
|
#include <linux/pm_runtime.h>
|
|
#include <linux/regmap.h>
|
|
#include <linux/regulator/consumer.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/spi/spi.h>
|
|
#include <linux/of.h>
|
|
|
|
#include <linux/mfd/arizona/core.h>
|
|
|
|
#include "arizona.h"
|
|
|
|
static int arizona_spi_probe(struct spi_device *spi)
|
|
{
|
|
const struct spi_device_id *id = spi_get_device_id(spi);
|
|
struct arizona *arizona;
|
|
const struct regmap_config *regmap_config = NULL;
|
|
unsigned long type;
|
|
int ret;
|
|
|
|
if (spi->dev.of_node)
|
|
type = arizona_of_get_type(&spi->dev);
|
|
else
|
|
type = id->driver_data;
|
|
|
|
switch (type) {
|
|
case WM5102:
|
|
if (IS_ENABLED(CONFIG_MFD_WM5102))
|
|
regmap_config = &wm5102_spi_regmap;
|
|
break;
|
|
case WM5110:
|
|
case WM8280:
|
|
if (IS_ENABLED(CONFIG_MFD_WM5110))
|
|
regmap_config = &wm5110_spi_regmap;
|
|
break;
|
|
case WM1831:
|
|
case CS47L24:
|
|
if (IS_ENABLED(CONFIG_MFD_CS47L24))
|
|
regmap_config = &cs47l24_spi_regmap;
|
|
break;
|
|
default:
|
|
dev_err(&spi->dev, "Unknown device type %ld\n", type);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!regmap_config) {
|
|
dev_err(&spi->dev,
|
|
"No kernel support for device type %ld\n", type);
|
|
return -EINVAL;
|
|
}
|
|
|
|
arizona = devm_kzalloc(&spi->dev, sizeof(*arizona), GFP_KERNEL);
|
|
if (arizona == NULL)
|
|
return -ENOMEM;
|
|
|
|
arizona->regmap = devm_regmap_init_spi(spi, regmap_config);
|
|
if (IS_ERR(arizona->regmap)) {
|
|
ret = PTR_ERR(arizona->regmap);
|
|
dev_err(&spi->dev, "Failed to allocate register map: %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
arizona->type = type;
|
|
arizona->dev = &spi->dev;
|
|
arizona->irq = spi->irq;
|
|
|
|
return arizona_dev_init(arizona);
|
|
}
|
|
|
|
static int arizona_spi_remove(struct spi_device *spi)
|
|
{
|
|
struct arizona *arizona = spi_get_drvdata(spi);
|
|
|
|
arizona_dev_exit(arizona);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct spi_device_id arizona_spi_ids[] = {
|
|
{ "wm5102", WM5102 },
|
|
{ "wm5110", WM5110 },
|
|
{ "wm8280", WM8280 },
|
|
{ "wm1831", WM1831 },
|
|
{ "cs47l24", CS47L24 },
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(spi, arizona_spi_ids);
|
|
|
|
static struct spi_driver arizona_spi_driver = {
|
|
.driver = {
|
|
.name = "arizona",
|
|
.pm = &arizona_pm_ops,
|
|
.of_match_table = of_match_ptr(arizona_of_match),
|
|
},
|
|
.probe = arizona_spi_probe,
|
|
.remove = arizona_spi_remove,
|
|
.id_table = arizona_spi_ids,
|
|
};
|
|
|
|
module_spi_driver(arizona_spi_driver);
|
|
|
|
MODULE_DESCRIPTION("Arizona SPI bus interface");
|
|
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
|
|
MODULE_LICENSE("GPL");
|