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Mark Brown
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Jun 23, 2012
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refs/heads/master: c6f756223ad6bf5b71f1b9454b092f3dbe94900f | ||
refs/heads/master: a15123c708a364cc70c5db0ef56e6fab8268bf68 |
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/* | ||
* 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. | ||
*/ | ||
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#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> | ||
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#include <linux/mfd/arizona/core.h> | ||
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#include "arizona.h" | ||
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static int __devinit 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; | ||
int ret; | ||
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switch (id->driver_data) { | ||
#ifdef CONFIG_MFD_WM5102 | ||
case WM5102: | ||
regmap_config = &wm5102_spi_regmap; | ||
break; | ||
#endif | ||
default: | ||
dev_err(&spi->dev, "Unknown device type %ld\n", | ||
id->driver_data); | ||
return -EINVAL; | ||
} | ||
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arizona = devm_kzalloc(&spi->dev, sizeof(*arizona), GFP_KERNEL); | ||
if (arizona == NULL) | ||
return -ENOMEM; | ||
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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; | ||
} | ||
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arizona->type = id->driver_data; | ||
arizona->dev = &spi->dev; | ||
arizona->irq = spi->irq; | ||
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return arizona_dev_init(arizona); | ||
} | ||
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static int __devexit arizona_spi_remove(struct spi_device *spi) | ||
{ | ||
struct arizona *arizona = dev_get_drvdata(&spi->dev); | ||
arizona_dev_exit(arizona); | ||
return 0; | ||
} | ||
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static const struct spi_device_id arizona_spi_ids[] = { | ||
{ "wm5102", WM5102 }, | ||
{ }, | ||
}; | ||
MODULE_DEVICE_TABLE(spi, arizona_spi_ids); | ||
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static struct spi_driver arizona_spi_driver = { | ||
.driver = { | ||
.name = "arizona", | ||
.owner = THIS_MODULE, | ||
.pm = &arizona_pm_ops, | ||
}, | ||
.probe = arizona_spi_probe, | ||
.remove = __devexit_p(arizona_spi_remove), | ||
.id_table = arizona_spi_ids, | ||
}; | ||
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module_spi_driver(arizona_spi_driver); | ||
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MODULE_DESCRIPTION("Arizona SPI bus interface"); | ||
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | ||
MODULE_LICENSE("GPL"); |