projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| a15123c7 MB |
1 | /* |
| 2 | * arizona-spi.c -- Arizona SPI bus interface | |
| 3 | * | |
| 4 | * Copyright 2012 Wolfson Microelectronics plc | |
| 5 | * | |
| 6 | * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or modify | |
| 9 | * it under the terms of the GNU General Public License version 2 as | |
| 10 | * published by the Free Software Foundation. | |
| 11 | */ | |
| 12 | ||
| 13 | #include <linux/err.h> | |
| 14 | #include <linux/module.h> | |
| 15 | #include <linux/pm_runtime.h> | |
| 16 | #include <linux/regmap.h> | |
| 17 | #include <linux/regulator/consumer.h> | |
| 18 | #include <linux/slab.h> | |
| 19 | #include <linux/spi/spi.h> | |
| 20 | ||
| 21 | #include <linux/mfd/arizona/core.h> | |
| 22 | ||
| 23 | #include "arizona.h" | |
| 24 | ||
| 25 | static int __devinit arizona_spi_probe(struct spi_device *spi) | |
| 26 | { | |
| 27 | const struct spi_device_id *id = spi_get_device_id(spi); | |
| 28 | struct arizona *arizona; | |
| 29 | const struct regmap_config *regmap_config; | |
| 30 | int ret; | |
| 31 | ||
| 32 | switch (id->driver_data) { | |
| 33 | #ifdef CONFIG_MFD_WM5102 | |
| 34 | case WM5102: | |
| 35 | regmap_config = &wm5102_spi_regmap; | |
| 36 | break; | |
| 37 | #endif | |
| 38 | default: | |
| 39 | dev_err(&spi->dev, "Unknown device type %ld\n", | |
| 40 | id->driver_data); | |
| 41 | return -EINVAL; | |
| 42 | } | |
| 43 | ||
| 44 | arizona = devm_kzalloc(&spi->dev, sizeof(*arizona), GFP_KERNEL); | |
| 45 | if (arizona == NULL) | |
| 46 | return -ENOMEM; | |
| 47 | ||
| 48 | arizona->regmap = devm_regmap_init_spi(spi, regmap_config); | |
| 49 | if (IS_ERR(arizona->regmap)) { | |
| 50 | ret = PTR_ERR(arizona->regmap); | |
| 51 | dev_err(&spi->dev, "Failed to allocate register map: %d\n", | |
| 52 | ret); | |
| 53 | return ret; | |
| 54 | } | |
| 55 | ||
| 56 | arizona->type = id->driver_data; | |
| 57 | arizona->dev = &spi->dev; | |
| 58 | arizona->irq = spi->irq; | |
| 59 | ||
| 60 | return arizona_dev_init(arizona); | |
| 61 | } | |
| 62 | ||
| 63 | static int __devexit arizona_spi_remove(struct spi_device *spi) | |
| 64 | { | |
| 65 | struct arizona *arizona = dev_get_drvdata(&spi->dev); | |
| 66 | arizona_dev_exit(arizona); | |
| 67 | return 0; | |
| 68 | } | |
| 69 | ||
| 70 | static const struct spi_device_id arizona_spi_ids[] = { | |
| 71 | { "wm5102", WM5102 }, | |
| 72 | { }, | |
| 73 | }; | |
| 74 | MODULE_DEVICE_TABLE(spi, arizona_spi_ids); | |
| 75 | ||
| 76 | static struct spi_driver arizona_spi_driver = { | |
| 77 | .driver = { | |
| 78 | .name = "arizona", | |
| 79 | .owner = THIS_MODULE, | |
| 80 | .pm = &arizona_pm_ops, | |
| 81 | }, | |
| 82 | .probe = arizona_spi_probe, | |
| 83 | .remove = __devexit_p(arizona_spi_remove), | |
| 84 | .id_table = arizona_spi_ids, | |
| 85 | }; | |
| 86 | ||
| 87 | module_spi_driver(arizona_spi_driver); | |
| 88 | ||
| 89 | MODULE_DESCRIPTION("Arizona SPI bus interface"); | |
| 90 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
| 91 | MODULE_LICENSE("GPL"); |