12874c5fdSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later
2cfe04478SAshish Jangam /*
3cfe04478SAshish Jangam * SPI access for Dialog DA9052 PMICs.
4cfe04478SAshish Jangam *
5cfe04478SAshish Jangam * Copyright(c) 2011 Dialog Semiconductor Ltd.
6cfe04478SAshish Jangam *
7cfe04478SAshish Jangam * Author: David Dajun Chen <dchen@diasemi.com>
8cfe04478SAshish Jangam */
9cfe04478SAshish Jangam
10cfe04478SAshish Jangam #include <linux/device.h>
11cfe04478SAshish Jangam #include <linux/module.h>
12cfe04478SAshish Jangam #include <linux/input.h>
13cfe04478SAshish Jangam #include <linux/mfd/core.h>
14cfe04478SAshish Jangam #include <linux/spi/spi.h>
15cfe04478SAshish Jangam #include <linux/err.h>
16cfe04478SAshish Jangam
17cfe04478SAshish Jangam #include <linux/mfd/da9052/da9052.h>
18cfe04478SAshish Jangam
da9052_spi_probe(struct spi_device * spi)19f791be49SBill Pemberton static int da9052_spi_probe(struct spi_device *spi)
20cfe04478SAshish Jangam {
21e9e9d397SAxel Lin struct regmap_config config;
22cfe04478SAshish Jangam int ret;
23cfe04478SAshish Jangam const struct spi_device_id *id = spi_get_device_id(spi);
246608a5e2SAxel Lin struct da9052 *da9052;
25cfe04478SAshish Jangam
266608a5e2SAxel Lin da9052 = devm_kzalloc(&spi->dev, sizeof(struct da9052), GFP_KERNEL);
27cfe04478SAshish Jangam if (!da9052)
28cfe04478SAshish Jangam return -ENOMEM;
29cfe04478SAshish Jangam
3072e341c4SAdam Ward spi->mode = SPI_MODE_0;
31cfe04478SAshish Jangam spi->bits_per_word = 8;
32cfe04478SAshish Jangam spi_setup(spi);
33cfe04478SAshish Jangam
34cfe04478SAshish Jangam da9052->dev = &spi->dev;
35cfe04478SAshish Jangam da9052->chip_irq = spi->irq;
36cfe04478SAshish Jangam
371b1ba09cSJingoo Han spi_set_drvdata(spi, da9052);
38cfe04478SAshish Jangam
39e9e9d397SAxel Lin config = da9052_regmap_config;
40e9e9d397SAxel Lin config.read_flag_mask = 1;
4172e341c4SAdam Ward config.reg_bits = 7;
4272e341c4SAdam Ward config.pad_bits = 1;
4372e341c4SAdam Ward config.val_bits = 8;
441c96a2f6SDavid Frey config.use_single_read = true;
451c96a2f6SDavid Frey config.use_single_write = true;
46cfe04478SAshish Jangam
47e9e9d397SAxel Lin da9052->regmap = devm_regmap_init_spi(spi, &config);
48cfe04478SAshish Jangam if (IS_ERR(da9052->regmap)) {
49cfe04478SAshish Jangam ret = PTR_ERR(da9052->regmap);
50cfe04478SAshish Jangam dev_err(&spi->dev, "Failed to allocate register map: %d\n",
51cfe04478SAshish Jangam ret);
526608a5e2SAxel Lin return ret;
53cfe04478SAshish Jangam }
54cfe04478SAshish Jangam
55ad698ea4SJavier Martinez Canillas return da9052_device_init(da9052, id->driver_data);
56cfe04478SAshish Jangam }
57cfe04478SAshish Jangam
da9052_spi_remove(struct spi_device * spi)58*a0386bbaSUwe Kleine-König static void da9052_spi_remove(struct spi_device *spi)
59cfe04478SAshish Jangam {
601b1ba09cSJingoo Han struct da9052 *da9052 = spi_get_drvdata(spi);
61cfe04478SAshish Jangam
62cfe04478SAshish Jangam da9052_device_exit(da9052);
63cfe04478SAshish Jangam }
64cfe04478SAshish Jangam
657e1372a4SArvind Yadav static const struct spi_device_id da9052_spi_id[] = {
66cfe04478SAshish Jangam {"da9052", DA9052},
67cfe04478SAshish Jangam {"da9053-aa", DA9053_AA},
68cfe04478SAshish Jangam {"da9053-ba", DA9053_BA},
69cfe04478SAshish Jangam {"da9053-bb", DA9053_BB},
706c049b2aSOpensource [Anthony Olech] {"da9053-bc", DA9053_BC},
71cfe04478SAshish Jangam {}
72cfe04478SAshish Jangam };
73cfe04478SAshish Jangam
74cfe04478SAshish Jangam static struct spi_driver da9052_spi_driver = {
75cfe04478SAshish Jangam .probe = da9052_spi_probe,
7684449216SBill Pemberton .remove = da9052_spi_remove,
77cfe04478SAshish Jangam .id_table = da9052_spi_id,
78cfe04478SAshish Jangam .driver = {
79cfe04478SAshish Jangam .name = "da9052",
80cfe04478SAshish Jangam },
81cfe04478SAshish Jangam };
82cfe04478SAshish Jangam
da9052_spi_init(void)83cfe04478SAshish Jangam static int __init da9052_spi_init(void)
84cfe04478SAshish Jangam {
85cfe04478SAshish Jangam int ret;
86cfe04478SAshish Jangam
87cfe04478SAshish Jangam ret = spi_register_driver(&da9052_spi_driver);
88cfe04478SAshish Jangam if (ret != 0) {
89cfe04478SAshish Jangam pr_err("Failed to register DA9052 SPI driver, %d\n", ret);
90cfe04478SAshish Jangam return ret;
91cfe04478SAshish Jangam }
92cfe04478SAshish Jangam
93cfe04478SAshish Jangam return 0;
94cfe04478SAshish Jangam }
95cfe04478SAshish Jangam subsys_initcall(da9052_spi_init);
96cfe04478SAshish Jangam
da9052_spi_exit(void)97cfe04478SAshish Jangam static void __exit da9052_spi_exit(void)
98cfe04478SAshish Jangam {
99cfe04478SAshish Jangam spi_unregister_driver(&da9052_spi_driver);
100cfe04478SAshish Jangam }
101cfe04478SAshish Jangam module_exit(da9052_spi_exit);
102cfe04478SAshish Jangam
103cfe04478SAshish Jangam MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
104cfe04478SAshish Jangam MODULE_DESCRIPTION("SPI driver for Dialog DA9052 PMIC");
105