ea1f333990
This patch adds the regmap configuration tables and core MFD handling for the CS47L24 and WM1831 codecs. Note that compared to the other Arizona codecs, these devices do not have an LDO1 or micsupp regulators, extcon driver, or the DCVDD isolation control. Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
118 lines
2.7 KiB
C
118 lines
2.7 KiB
C
/*
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* arizona-spi.c -- Arizona SPI bus interface
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*
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* Copyright 2012 Wolfson Microelectronics plc
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*
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* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/err.h>
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#include <linux/module.h>
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#include <linux/pm_runtime.h>
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#include <linux/regmap.h>
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#include <linux/regulator/consumer.h>
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#include <linux/slab.h>
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#include <linux/spi/spi.h>
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#include <linux/of.h>
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#include <linux/mfd/arizona/core.h>
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#include "arizona.h"
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static int arizona_spi_probe(struct spi_device *spi)
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{
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const struct spi_device_id *id = spi_get_device_id(spi);
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struct arizona *arizona;
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const struct regmap_config *regmap_config = NULL;
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unsigned long type;
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int ret;
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if (spi->dev.of_node)
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type = arizona_of_get_type(&spi->dev);
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else
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type = id->driver_data;
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switch (type) {
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case WM5102:
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if (IS_ENABLED(CONFIG_MFD_WM5102))
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regmap_config = &wm5102_spi_regmap;
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break;
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case WM5110:
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case WM8280:
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if (IS_ENABLED(CONFIG_MFD_WM5110))
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regmap_config = &wm5110_spi_regmap;
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break;
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case WM1831:
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case CS47L24:
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if (IS_ENABLED(CONFIG_MFD_CS47L24))
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regmap_config = &cs47l24_spi_regmap;
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break;
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default:
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dev_err(&spi->dev, "Unknown device type %ld\n", type);
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return -EINVAL;
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}
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if (!regmap_config) {
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dev_err(&spi->dev,
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"No kernel support for device type %ld\n", type);
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return -EINVAL;
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}
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arizona = devm_kzalloc(&spi->dev, sizeof(*arizona), GFP_KERNEL);
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if (arizona == NULL)
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return -ENOMEM;
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arizona->regmap = devm_regmap_init_spi(spi, regmap_config);
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if (IS_ERR(arizona->regmap)) {
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ret = PTR_ERR(arizona->regmap);
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dev_err(&spi->dev, "Failed to allocate register map: %d\n",
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ret);
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return ret;
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}
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arizona->type = type;
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arizona->dev = &spi->dev;
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arizona->irq = spi->irq;
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return arizona_dev_init(arizona);
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}
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static int arizona_spi_remove(struct spi_device *spi)
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{
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struct arizona *arizona = spi_get_drvdata(spi);
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arizona_dev_exit(arizona);
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return 0;
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}
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static const struct spi_device_id arizona_spi_ids[] = {
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{ "wm5102", WM5102 },
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{ "wm5110", WM5110 },
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{ "wm8280", WM8280 },
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{ "wm1831", WM1831 },
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{ "cs47l24", CS47L24 },
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{ },
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};
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MODULE_DEVICE_TABLE(spi, arizona_spi_ids);
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static struct spi_driver arizona_spi_driver = {
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.driver = {
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.name = "arizona",
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.pm = &arizona_pm_ops,
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.of_match_table = of_match_ptr(arizona_of_match),
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},
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.probe = arizona_spi_probe,
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.remove = arizona_spi_remove,
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.id_table = arizona_spi_ids,
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};
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module_spi_driver(arizona_spi_driver);
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MODULE_DESCRIPTION("Arizona SPI bus interface");
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MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
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MODULE_LICENSE("GPL");
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