git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| fa661258 MW |
1 | /* |
| 2 | * Copyright (C) 2007-2010 ST-Ericsson | |
| 3 | * License terms: GNU General Public License (GPL) version 2 | |
| 4 | * Register access functions for the ABX500 Mixed Signal IC family. | |
| 5 | * Author: Mattias Wallin <mattias.wallin@stericsson.com> | |
| 6 | */ | |
| 7 | ||
| 8 | #include <linux/list.h> | |
| 9 | #include <linux/slab.h> | |
| 10 | #include <linux/err.h> | |
| 11 | #include <linux/mfd/abx500.h> | |
| 12 | ||
| 13 | static LIST_HEAD(abx500_list); | |
| 14 | ||
| 15 | struct abx500_device_entry { | |
| 16 | struct list_head list; | |
| 17 | struct abx500_ops ops; | |
| 18 | struct device *dev; | |
| 19 | }; | |
| 20 | ||
| 21 | static void lookup_ops(struct device *dev, struct abx500_ops **ops) | |
| 22 | { | |
| 23 | struct abx500_device_entry *dev_entry; | |
| 24 | ||
| 25 | *ops = NULL; | |
| 26 | list_for_each_entry(dev_entry, &abx500_list, list) { | |
| 27 | if (dev_entry->dev == dev) { | |
| 28 | *ops = &dev_entry->ops; | |
| 29 | return; | |
| 30 | } | |
| 31 | } | |
| 32 | } | |
| 33 | ||
| 34 | int abx500_register_ops(struct device *dev, struct abx500_ops *ops) | |
| 35 | { | |
| 36 | struct abx500_device_entry *dev_entry; | |
| 37 | ||
| 38 | dev_entry = kzalloc(sizeof(struct abx500_device_entry), GFP_KERNEL); | |
| 25fe24f8 | 39 | if (!dev_entry) { |
| fa661258 MW |
40 | dev_err(dev, "register_ops kzalloc failed"); |
| 41 | return -ENOMEM; | |
| 42 | } | |
| 43 | dev_entry->dev = dev; | |
| 44 | memcpy(&dev_entry->ops, ops, sizeof(struct abx500_ops)); | |
| 45 | ||
| 46 | list_add_tail(&dev_entry->list, &abx500_list); | |
| 47 | return 0; | |
| 48 | } | |
| 49 | EXPORT_SYMBOL(abx500_register_ops); | |
| 50 | ||
| 51 | void abx500_remove_ops(struct device *dev) | |
| 52 | { | |
| 53 | struct abx500_device_entry *dev_entry, *tmp; | |
| 54 | ||
| 55 | list_for_each_entry_safe(dev_entry, tmp, &abx500_list, list) | |
| 56 | { | |
| 57 | if (dev_entry->dev == dev) { | |
| 58 | list_del(&dev_entry->list); | |
| 59 | kfree(dev_entry); | |
| 60 | } | |
| 61 | } | |
| 62 | } | |
| 63 | EXPORT_SYMBOL(abx500_remove_ops); | |
| 64 | ||
| 65 | int abx500_set_register_interruptible(struct device *dev, u8 bank, u8 reg, | |
| 66 | u8 value) | |
| 67 | { | |
| 68 | struct abx500_ops *ops; | |
| 69 | ||
| 70 | lookup_ops(dev->parent, &ops); | |
| 71 | if ((ops != NULL) && (ops->set_register != NULL)) | |
| 72 | return ops->set_register(dev, bank, reg, value); | |
| 73 | else | |
| 74 | return -ENOTSUPP; | |
| 75 | } | |
| 76 | EXPORT_SYMBOL(abx500_set_register_interruptible); | |
| 77 | ||
| 78 | int abx500_get_register_interruptible(struct device *dev, u8 bank, u8 reg, | |
| 79 | u8 *value) | |
| 80 | { | |
| 81 | struct abx500_ops *ops; | |
| 82 | ||
| 83 | lookup_ops(dev->parent, &ops); | |
| 84 | if ((ops != NULL) && (ops->get_register != NULL)) | |
| 85 | return ops->get_register(dev, bank, reg, value); | |
| 86 | else | |
| 87 | return -ENOTSUPP; | |
| 88 | } | |
| 89 | EXPORT_SYMBOL(abx500_get_register_interruptible); | |
| 90 | ||
| 91 | int abx500_get_register_page_interruptible(struct device *dev, u8 bank, | |
| 92 | u8 first_reg, u8 *regvals, u8 numregs) | |
| 93 | { | |
| 94 | struct abx500_ops *ops; | |
| 95 | ||
| 96 | lookup_ops(dev->parent, &ops); | |
| 97 | if ((ops != NULL) && (ops->get_register_page != NULL)) | |
| 98 | return ops->get_register_page(dev, bank, | |
| 99 | first_reg, regvals, numregs); | |
| 100 | else | |
| 101 | return -ENOTSUPP; | |
| 102 | } | |
| 103 | EXPORT_SYMBOL(abx500_get_register_page_interruptible); | |
| 104 | ||
| 105 | int abx500_mask_and_set_register_interruptible(struct device *dev, u8 bank, | |
| 106 | u8 reg, u8 bitmask, u8 bitvalues) | |
| 107 | { | |
| 108 | struct abx500_ops *ops; | |
| 109 | ||
| 110 | lookup_ops(dev->parent, &ops); | |
| 111 | if ((ops != NULL) && (ops->mask_and_set_register != NULL)) | |
| 112 | return ops->mask_and_set_register(dev, bank, | |
| 113 | reg, bitmask, bitvalues); | |
| 114 | else | |
| 115 | return -ENOTSUPP; | |
| 116 | } | |
| 117 | EXPORT_SYMBOL(abx500_mask_and_set_register_interruptible); | |
| 118 | ||
| 119 | int abx500_get_chip_id(struct device *dev) | |
| 120 | { | |
| 121 | struct abx500_ops *ops; | |
| 122 | ||
| 123 | lookup_ops(dev->parent, &ops); | |
| 124 | if ((ops != NULL) && (ops->get_chip_id != NULL)) | |
| 125 | return ops->get_chip_id(dev); | |
| 126 | else | |
| 127 | return -ENOTSUPP; | |
| 128 | } | |
| 129 | EXPORT_SYMBOL(abx500_get_chip_id); | |
| 130 | ||
| 131 | int abx500_event_registers_startup_state_get(struct device *dev, u8 *event) | |
| 132 | { | |
| 133 | struct abx500_ops *ops; | |
| 134 | ||
| 135 | lookup_ops(dev->parent, &ops); | |
| 136 | if ((ops != NULL) && (ops->event_registers_startup_state_get != NULL)) | |
| 137 | return ops->event_registers_startup_state_get(dev, event); | |
| 138 | else | |
| 139 | return -ENOTSUPP; | |
| 140 | } | |
| 141 | EXPORT_SYMBOL(abx500_event_registers_startup_state_get); | |
| 142 | ||
| 143 | int abx500_startup_irq_enabled(struct device *dev, unsigned int irq) | |
| 144 | { | |
| 145 | struct abx500_ops *ops; | |
| 146 | ||
| 147 | lookup_ops(dev->parent, &ops); | |
| 148 | if ((ops != NULL) && (ops->startup_irq_enabled != NULL)) | |
| 149 | return ops->startup_irq_enabled(dev, irq); | |
| 150 | else | |
| 151 | return -ENOTSUPP; | |
| 152 | } | |
| 153 | EXPORT_SYMBOL(abx500_startup_irq_enabled); | |
| 154 | ||
| 155 | MODULE_AUTHOR("Mattias Wallin <mattias.wallin@stericsson.com>"); | |
| 156 | MODULE_DESCRIPTION("ABX500 core driver"); | |
| 157 | MODULE_LICENSE("GPL"); |