linux/drivers/mfd/wm831x-spi.c
Mark Brown 3e4f878994 mfd: wm831x: Remove erronious bits per word set
Since the conversion to the regmap API setting bits per word will lead to
data corruption since the regmap API already configures the bits per word
appropriately.

Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-07-31 13:00:53 +01:00

126 lines
2.8 KiB
C

/*
* wm831x-spi.c -- SPI access for Wolfson WM831x PMICs
*
* Copyright 2009,2010 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 as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pm.h>
#include <linux/spi/spi.h>
#include <linux/regmap.h>
#include <linux/err.h>
#include <linux/mfd/wm831x/core.h>
static int wm831x_spi_probe(struct spi_device *spi)
{
const struct spi_device_id *id = spi_get_device_id(spi);
struct wm831x *wm831x;
enum wm831x_parent type;
int ret;
type = (enum wm831x_parent)id->driver_data;
wm831x = devm_kzalloc(&spi->dev, sizeof(struct wm831x), GFP_KERNEL);
if (wm831x == NULL)
return -ENOMEM;
spi->mode = SPI_MODE_0;
spi_set_drvdata(spi, wm831x);
wm831x->dev = &spi->dev;
wm831x->regmap = devm_regmap_init_spi(spi, &wm831x_regmap_config);
if (IS_ERR(wm831x->regmap)) {
ret = PTR_ERR(wm831x->regmap);
dev_err(wm831x->dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
return wm831x_device_init(wm831x, type, spi->irq);
}
static int wm831x_spi_remove(struct spi_device *spi)
{
struct wm831x *wm831x = spi_get_drvdata(spi);
wm831x_device_exit(wm831x);
return 0;
}
static int wm831x_spi_suspend(struct device *dev)
{
struct wm831x *wm831x = dev_get_drvdata(dev);
return wm831x_device_suspend(wm831x);
}
static void wm831x_spi_shutdown(struct spi_device *spi)
{
struct wm831x *wm831x = spi_get_drvdata(spi);
wm831x_device_shutdown(wm831x);
}
static const struct dev_pm_ops wm831x_spi_pm = {
.freeze = wm831x_spi_suspend,
.suspend = wm831x_spi_suspend,
};
static const struct spi_device_id wm831x_spi_ids[] = {
{ "wm8310", WM8310 },
{ "wm8311", WM8311 },
{ "wm8312", WM8312 },
{ "wm8320", WM8320 },
{ "wm8321", WM8321 },
{ "wm8325", WM8325 },
{ "wm8326", WM8326 },
{ },
};
MODULE_DEVICE_TABLE(spi, wm831x_spi_ids);
static struct spi_driver wm831x_spi_driver = {
.driver = {
.name = "wm831x",
.owner = THIS_MODULE,
.pm = &wm831x_spi_pm,
},
.id_table = wm831x_spi_ids,
.probe = wm831x_spi_probe,
.remove = wm831x_spi_remove,
.shutdown = wm831x_spi_shutdown,
};
static int __init wm831x_spi_init(void)
{
int ret;
ret = spi_register_driver(&wm831x_spi_driver);
if (ret != 0)
pr_err("Failed to register WM831x SPI driver: %d\n", ret);
return 0;
}
subsys_initcall(wm831x_spi_init);
static void __exit wm831x_spi_exit(void)
{
spi_unregister_driver(&wm831x_spi_driver);
}
module_exit(wm831x_spi_exit);
MODULE_DESCRIPTION("SPI support for WM831x/2x AudioPlus PMICs");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Mark Brown");