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07b0e5b102
Currently the I2C device Ids conflict for the MFD and CODEC so cannot be both instantiated on one platform. This patch updates the Ids and names to make them unique from each other. It should be noted that the I2C addresses for both PMIC and CODEC are modifiable so instantiation of the two are kept as separate devices, rather than instantiating the CODEC from the MFD code. Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com> Acked-by: Mark Brown <broonie@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org> Cc: stable@vger.kernel.org
101 lines
2.4 KiB
C
101 lines
2.4 KiB
C
/* I2C access for DA9055 PMICs.
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*
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* Copyright(c) 2012 Dialog Semiconductor Ltd.
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*
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* Author: David Dajun Chen <dchen@diasemi.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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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*/
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/i2c.h>
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#include <linux/err.h>
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#include <linux/mfd/da9055/core.h>
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static int da9055_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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struct da9055 *da9055;
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int ret;
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da9055 = devm_kzalloc(&i2c->dev, sizeof(struct da9055), GFP_KERNEL);
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if (!da9055)
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return -ENOMEM;
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da9055->regmap = devm_regmap_init_i2c(i2c, &da9055_regmap_config);
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if (IS_ERR(da9055->regmap)) {
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ret = PTR_ERR(da9055->regmap);
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dev_err(&i2c->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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da9055->dev = &i2c->dev;
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da9055->chip_irq = i2c->irq;
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i2c_set_clientdata(i2c, da9055);
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return da9055_device_init(da9055);
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}
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static int da9055_i2c_remove(struct i2c_client *i2c)
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{
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struct da9055 *da9055 = i2c_get_clientdata(i2c);
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da9055_device_exit(da9055);
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return 0;
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}
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/*
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* DO NOT change the device Ids. The naming is intentionally specific as both
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* the PMIC and CODEC parts of this chip are instantiated separately as I2C
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* devices (both have configurable I2C addresses, and are to all intents and
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* purposes separate). As a result there are specific DA9055 ids for PMIC
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* and CODEC, which must be different to operate together.
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*/
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static struct i2c_device_id da9055_i2c_id[] = {
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{"da9055-pmic", 0},
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, da9055_i2c_id);
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static struct i2c_driver da9055_i2c_driver = {
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.probe = da9055_i2c_probe,
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.remove = da9055_i2c_remove,
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.id_table = da9055_i2c_id,
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.driver = {
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.name = "da9055-pmic",
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.owner = THIS_MODULE,
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},
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};
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static int __init da9055_i2c_init(void)
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{
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int ret;
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ret = i2c_add_driver(&da9055_i2c_driver);
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if (ret != 0) {
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pr_err("DA9055 I2C registration failed %d\n", ret);
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return ret;
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}
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return 0;
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}
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subsys_initcall(da9055_i2c_init);
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static void __exit da9055_i2c_exit(void)
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{
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i2c_del_driver(&da9055_i2c_driver);
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}
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module_exit(da9055_i2c_exit);
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MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
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MODULE_DESCRIPTION("I2C driver for Dialog DA9055 PMIC");
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MODULE_LICENSE("GPL");
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