1cfe04478SAshish Jangam /* 2cfe04478SAshish Jangam * SPI access for Dialog DA9052 PMICs. 3cfe04478SAshish Jangam * 4cfe04478SAshish Jangam * Copyright(c) 2011 Dialog Semiconductor Ltd. 5cfe04478SAshish Jangam * 6cfe04478SAshish Jangam * Author: David Dajun Chen <dchen@diasemi.com> 7cfe04478SAshish Jangam * 8cfe04478SAshish Jangam * This program is free software; you can redistribute it and/or modify 9cfe04478SAshish Jangam * it under the terms of the GNU General Public License as published by 10cfe04478SAshish Jangam * the Free Software Foundation; either version 2 of the License, or 11cfe04478SAshish Jangam * (at your option) any later version. 12cfe04478SAshish Jangam * 13cfe04478SAshish Jangam */ 14cfe04478SAshish Jangam 15cfe04478SAshish Jangam #include <linux/device.h> 16cfe04478SAshish Jangam #include <linux/module.h> 17cfe04478SAshish Jangam #include <linux/input.h> 18cfe04478SAshish Jangam #include <linux/mfd/core.h> 19cfe04478SAshish Jangam #include <linux/spi/spi.h> 20cfe04478SAshish Jangam #include <linux/err.h> 21cfe04478SAshish Jangam 22cfe04478SAshish Jangam #include <linux/mfd/da9052/da9052.h> 23cfe04478SAshish Jangam 24f791be49SBill Pemberton static int da9052_spi_probe(struct spi_device *spi) 25cfe04478SAshish Jangam { 26e9e9d397SAxel Lin struct regmap_config config; 27cfe04478SAshish Jangam int ret; 28cfe04478SAshish Jangam const struct spi_device_id *id = spi_get_device_id(spi); 296608a5e2SAxel Lin struct da9052 *da9052; 30cfe04478SAshish Jangam 316608a5e2SAxel Lin da9052 = devm_kzalloc(&spi->dev, sizeof(struct da9052), GFP_KERNEL); 32cfe04478SAshish Jangam if (!da9052) 33cfe04478SAshish Jangam return -ENOMEM; 34cfe04478SAshish Jangam 3572e341c4SAdam Ward spi->mode = SPI_MODE_0; 36cfe04478SAshish Jangam spi->bits_per_word = 8; 37cfe04478SAshish Jangam spi_setup(spi); 38cfe04478SAshish Jangam 39cfe04478SAshish Jangam da9052->dev = &spi->dev; 40cfe04478SAshish Jangam da9052->chip_irq = spi->irq; 41cfe04478SAshish Jangam 421b1ba09cSJingoo Han spi_set_drvdata(spi, da9052); 43cfe04478SAshish Jangam 44e9e9d397SAxel Lin config = da9052_regmap_config; 45e9e9d397SAxel Lin config.read_flag_mask = 1; 4672e341c4SAdam Ward config.reg_bits = 7; 4772e341c4SAdam Ward config.pad_bits = 1; 4872e341c4SAdam Ward config.val_bits = 8; 4972e341c4SAdam Ward config.use_single_rw = 1; 50cfe04478SAshish Jangam 51e9e9d397SAxel Lin da9052->regmap = devm_regmap_init_spi(spi, &config); 52cfe04478SAshish Jangam if (IS_ERR(da9052->regmap)) { 53cfe04478SAshish Jangam ret = PTR_ERR(da9052->regmap); 54cfe04478SAshish Jangam dev_err(&spi->dev, "Failed to allocate register map: %d\n", 55cfe04478SAshish Jangam ret); 566608a5e2SAxel Lin return ret; 57cfe04478SAshish Jangam } 58cfe04478SAshish Jangam 59ad698ea4SJavier Martinez Canillas return da9052_device_init(da9052, id->driver_data); 60cfe04478SAshish Jangam } 61cfe04478SAshish Jangam 624740f73fSBill Pemberton static int da9052_spi_remove(struct spi_device *spi) 63cfe04478SAshish Jangam { 641b1ba09cSJingoo Han struct da9052 *da9052 = spi_get_drvdata(spi); 65cfe04478SAshish Jangam 66cfe04478SAshish Jangam da9052_device_exit(da9052); 67cfe04478SAshish Jangam return 0; 68cfe04478SAshish Jangam } 69cfe04478SAshish Jangam 707e1372a4SArvind Yadav static const struct spi_device_id da9052_spi_id[] = { 71cfe04478SAshish Jangam {"da9052", DA9052}, 72cfe04478SAshish Jangam {"da9053-aa", DA9053_AA}, 73cfe04478SAshish Jangam {"da9053-ba", DA9053_BA}, 74cfe04478SAshish Jangam {"da9053-bb", DA9053_BB}, 756c049b2aSOpensource [Anthony Olech] {"da9053-bc", DA9053_BC}, 76cfe04478SAshish Jangam {} 77cfe04478SAshish Jangam }; 78cfe04478SAshish Jangam 79cfe04478SAshish Jangam static struct spi_driver da9052_spi_driver = { 80cfe04478SAshish Jangam .probe = da9052_spi_probe, 8184449216SBill Pemberton .remove = da9052_spi_remove, 82cfe04478SAshish Jangam .id_table = da9052_spi_id, 83cfe04478SAshish Jangam .driver = { 84cfe04478SAshish Jangam .name = "da9052", 85cfe04478SAshish Jangam }, 86cfe04478SAshish Jangam }; 87cfe04478SAshish Jangam 88cfe04478SAshish Jangam static int __init da9052_spi_init(void) 89cfe04478SAshish Jangam { 90cfe04478SAshish Jangam int ret; 91cfe04478SAshish Jangam 92cfe04478SAshish Jangam ret = spi_register_driver(&da9052_spi_driver); 93cfe04478SAshish Jangam if (ret != 0) { 94cfe04478SAshish Jangam pr_err("Failed to register DA9052 SPI driver, %d\n", ret); 95cfe04478SAshish Jangam return ret; 96cfe04478SAshish Jangam } 97cfe04478SAshish Jangam 98cfe04478SAshish Jangam return 0; 99cfe04478SAshish Jangam } 100cfe04478SAshish Jangam subsys_initcall(da9052_spi_init); 101cfe04478SAshish Jangam 102cfe04478SAshish Jangam static void __exit da9052_spi_exit(void) 103cfe04478SAshish Jangam { 104cfe04478SAshish Jangam spi_unregister_driver(&da9052_spi_driver); 105cfe04478SAshish Jangam } 106cfe04478SAshish Jangam module_exit(da9052_spi_exit); 107cfe04478SAshish Jangam 108cfe04478SAshish Jangam MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>"); 109cfe04478SAshish Jangam MODULE_DESCRIPTION("SPI driver for Dialog DA9052 PMIC"); 110cfe04478SAshish Jangam MODULE_LICENSE("GPL"); 111