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106 lines
2.2 KiB
106 lines
2.2 KiB
// 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 <[email protected]> |
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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 <[email protected]>"); |
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MODULE_DESCRIPTION("SPI driver for Dialog DA9052 PMIC"); |
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MODULE_LICENSE("GPL");
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