mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-17 07:54:54 +08:00
b61c1ec058
Remove the use of #ifdefs around each case statement of the chip ID and type validation switches. We must ensure that the contained code still compiles to nothing if support for that codec was not built into the kernel, to prevent creation of link references to missing functions. So the ifdefs are replaced with a use of the IS_ENABLED() macro. Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com> Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
114 lines
2.6 KiB
C
114 lines
2.6 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;
|
|
default:
|
|
dev_err(&spi->dev, "Unknown device type %ld\n",
|
|
id->driver_data);
|
|
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 = id->driver_data;
|
|
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 },
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(spi, arizona_spi_ids);
|
|
|
|
static struct spi_driver arizona_spi_driver = {
|
|
.driver = {
|
|
.name = "arizona",
|
|
.owner = THIS_MODULE,
|
|
.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");
|