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02c54e9078
While being less compact, using named initializers allows to more easily see which members of the structs are assigned which value without having to lookup the declaration of the struct. And it's also more robust against changes to the struct definition. The mentioned robustness is relevant for a planned change to struct spi_device_id that replaces .driver_data by an anonymous union. Also adapt spacing and usage of commas to the most common style. This patch doesn't modify the compiled array, only its representation in source form benefits. Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com> Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://patch.msgid.link/f83c8292e7e3ba9425792591fb136d4ae1468215.1783003256.git.u.kleine-koenig@baylibre.com Signed-off-by: Lee Jones <lee@kernel.org>
105 lines
2.3 KiB
C
105 lines
2.3 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 void 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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}
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static const struct spi_device_id da9052_spi_id[] = {
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{ .name = "da9052", .driver_data = DA9052 },
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{ .name = "da9053-aa", .driver_data = DA9053_AA },
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{ .name = "da9053-ba", .driver_data = DA9053_BA },
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{ .name = "da9053-bb", .driver_data = DA9053_BB },
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{ .name = "da9053-bc", .driver_data = 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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