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| 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 | #ifdef CONFIG_MFD_WM5110 |
| 39 | case WM5110: |
| 40 | regmap_config = &wm5110_spi_regmap; |
| 41 | break; |
| 42 | #endif |
| 43 | default: |
| 44 | dev_err(&spi->dev, "Unknown device type %ld\n", |
| 45 | id->driver_data); |
| 46 | return -EINVAL; |
| 47 | } |
| 48 | |
| 49 | arizona = devm_kzalloc(&spi->dev, sizeof(*arizona), GFP_KERNEL); |
| 50 | if (arizona == NULL) |
| 51 | return -ENOMEM; |
| 52 | |
| 53 | arizona->regmap = devm_regmap_init_spi(spi, regmap_config); |
| 54 | if (IS_ERR(arizona->regmap)) { |
| 55 | ret = PTR_ERR(arizona->regmap); |
| 56 | dev_err(&spi->dev, "Failed to allocate register map: %d\n", |
| 57 | ret); |
| 58 | return ret; |
| 59 | } |
| 60 | |
| 61 | arizona->type = id->driver_data; |
| 62 | arizona->dev = &spi->dev; |
| 63 | arizona->irq = spi->irq; |
| 64 | |
| 65 | return arizona_dev_init(arizona); |
| 66 | } |
| 67 | |
| 68 | static int __devexit arizona_spi_remove(struct spi_device *spi) |
| 69 | { |
| 70 | struct arizona *arizona = dev_get_drvdata(&spi->dev); |
| 71 | arizona_dev_exit(arizona); |
| 72 | return 0; |
| 73 | } |
| 74 | |
| 75 | static const struct spi_device_id arizona_spi_ids[] = { |
| 76 | { "wm5102", WM5102 }, |
| 77 | { "wm5110", WM5110 }, |
| 78 | { }, |
| 79 | }; |
| 80 | MODULE_DEVICE_TABLE(spi, arizona_spi_ids); |
| 81 | |
| 82 | static struct spi_driver arizona_spi_driver = { |
| 83 | .driver = { |
| 84 | .name = "arizona", |
| 85 | .owner = THIS_MODULE, |
| 86 | .pm = &arizona_pm_ops, |
| 87 | }, |
| 88 | .probe = arizona_spi_probe, |
| 89 | .remove = __devexit_p(arizona_spi_remove), |
| 90 | .id_table = arizona_spi_ids, |
| 91 | }; |
| 92 | |
| 93 | module_spi_driver(arizona_spi_driver); |
| 94 | |
| 95 | MODULE_DESCRIPTION("Arizona SPI bus interface"); |
| 96 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); |
| 97 | MODULE_LICENSE("GPL"); |
| 98 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
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