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2874c5fd28
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
107 lines
2.2 KiB
C
107 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* SPI access for Dialog DA9052 PMICs.
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*
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* Copyright(c) 2011 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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#include <linux/device.h>
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#include <linux/module.h>
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#include <linux/input.h>
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#include <linux/mfd/core.h>
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#include <linux/spi/spi.h>
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#include <linux/err.h>
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#include <linux/mfd/da9052/da9052.h>
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static int da9052_spi_probe(struct spi_device *spi)
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{
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struct regmap_config config;
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int ret;
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const struct spi_device_id *id = spi_get_device_id(spi);
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struct da9052 *da9052;
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da9052 = devm_kzalloc(&spi->dev, sizeof(struct da9052), GFP_KERNEL);
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if (!da9052)
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return -ENOMEM;
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spi->mode = SPI_MODE_0;
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spi->bits_per_word = 8;
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spi_setup(spi);
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da9052->dev = &spi->dev;
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da9052->chip_irq = spi->irq;
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spi_set_drvdata(spi, da9052);
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config = da9052_regmap_config;
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config.read_flag_mask = 1;
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config.reg_bits = 7;
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config.pad_bits = 1;
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config.val_bits = 8;
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config.use_single_read = true;
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config.use_single_write = true;
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da9052->regmap = devm_regmap_init_spi(spi, &config);
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if (IS_ERR(da9052->regmap)) {
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ret = PTR_ERR(da9052->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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return da9052_device_init(da9052, id->driver_data);
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}
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static int da9052_spi_remove(struct spi_device *spi)
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{
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struct da9052 *da9052 = spi_get_drvdata(spi);
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da9052_device_exit(da9052);
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return 0;
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}
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static const struct spi_device_id da9052_spi_id[] = {
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{"da9052", DA9052},
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{"da9053-aa", DA9053_AA},
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{"da9053-ba", DA9053_BA},
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{"da9053-bb", DA9053_BB},
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{"da9053-bc", DA9053_BC},
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{}
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};
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static struct spi_driver da9052_spi_driver = {
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.probe = da9052_spi_probe,
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.remove = da9052_spi_remove,
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.id_table = da9052_spi_id,
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.driver = {
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.name = "da9052",
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},
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};
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static int __init da9052_spi_init(void)
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{
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int ret;
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ret = spi_register_driver(&da9052_spi_driver);
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if (ret != 0) {
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pr_err("Failed to register DA9052 SPI driver, %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(da9052_spi_init);
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static void __exit da9052_spi_exit(void)
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{
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spi_unregister_driver(&da9052_spi_driver);
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}
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module_exit(da9052_spi_exit);
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MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
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MODULE_DESCRIPTION("SPI driver for Dialog DA9052 PMIC");
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MODULE_LICENSE("GPL");
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