forked from luck/tmp_suning_uos_patched
fa661258a2
The interface for the AB3100 is changed to make way for the ABX500 family of chips: AB3550, AB5500 and future ST-Ericsson Analog Baseband chips. The register access functions are moved out to a separate struct abx500_ops. In this way the interface is moved from the implementation and the sub functionality drivers can keep their interface intact when chip infrastructure and communication mechanisms changes. We also define the AB3550 device IDs and the AB3550 platform data struct and convert the catenated 32bit event to an array of 3 x 8bits. Signed-off-by: Mattias Wallin <mattias.wallin@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
158 lines
3.9 KiB
C
158 lines
3.9 KiB
C
/*
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* Copyright (C) 2007-2010 ST-Ericsson
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* License terms: GNU General Public License (GPL) version 2
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* Register access functions for the ABX500 Mixed Signal IC family.
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* Author: Mattias Wallin <mattias.wallin@stericsson.com>
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*/
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#include <linux/list.h>
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#include <linux/slab.h>
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#include <linux/err.h>
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#include <linux/mfd/abx500.h>
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static LIST_HEAD(abx500_list);
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struct abx500_device_entry {
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struct list_head list;
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struct abx500_ops ops;
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struct device *dev;
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};
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static void lookup_ops(struct device *dev, struct abx500_ops **ops)
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{
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struct abx500_device_entry *dev_entry;
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*ops = NULL;
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list_for_each_entry(dev_entry, &abx500_list, list) {
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if (dev_entry->dev == dev) {
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*ops = &dev_entry->ops;
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return;
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}
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}
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}
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int abx500_register_ops(struct device *dev, struct abx500_ops *ops)
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{
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struct abx500_device_entry *dev_entry;
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dev_entry = kzalloc(sizeof(struct abx500_device_entry), GFP_KERNEL);
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if (IS_ERR(dev_entry)) {
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dev_err(dev, "register_ops kzalloc failed");
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return -ENOMEM;
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}
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dev_entry->dev = dev;
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memcpy(&dev_entry->ops, ops, sizeof(struct abx500_ops));
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list_add_tail(&dev_entry->list, &abx500_list);
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return 0;
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}
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EXPORT_SYMBOL(abx500_register_ops);
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void abx500_remove_ops(struct device *dev)
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{
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struct abx500_device_entry *dev_entry, *tmp;
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list_for_each_entry_safe(dev_entry, tmp, &abx500_list, list)
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{
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if (dev_entry->dev == dev) {
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list_del(&dev_entry->list);
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kfree(dev_entry);
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}
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}
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}
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EXPORT_SYMBOL(abx500_remove_ops);
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int abx500_set_register_interruptible(struct device *dev, u8 bank, u8 reg,
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u8 value)
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{
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struct abx500_ops *ops;
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lookup_ops(dev->parent, &ops);
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if ((ops != NULL) && (ops->set_register != NULL))
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return ops->set_register(dev, bank, reg, value);
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else
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(abx500_set_register_interruptible);
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int abx500_get_register_interruptible(struct device *dev, u8 bank, u8 reg,
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u8 *value)
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{
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struct abx500_ops *ops;
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lookup_ops(dev->parent, &ops);
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if ((ops != NULL) && (ops->get_register != NULL))
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return ops->get_register(dev, bank, reg, value);
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else
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(abx500_get_register_interruptible);
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int abx500_get_register_page_interruptible(struct device *dev, u8 bank,
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u8 first_reg, u8 *regvals, u8 numregs)
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{
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struct abx500_ops *ops;
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lookup_ops(dev->parent, &ops);
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if ((ops != NULL) && (ops->get_register_page != NULL))
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return ops->get_register_page(dev, bank,
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first_reg, regvals, numregs);
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else
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(abx500_get_register_page_interruptible);
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int abx500_mask_and_set_register_interruptible(struct device *dev, u8 bank,
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u8 reg, u8 bitmask, u8 bitvalues)
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{
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struct abx500_ops *ops;
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lookup_ops(dev->parent, &ops);
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if ((ops != NULL) && (ops->mask_and_set_register != NULL))
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return ops->mask_and_set_register(dev, bank,
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reg, bitmask, bitvalues);
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else
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(abx500_mask_and_set_register_interruptible);
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int abx500_get_chip_id(struct device *dev)
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{
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struct abx500_ops *ops;
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lookup_ops(dev->parent, &ops);
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if ((ops != NULL) && (ops->get_chip_id != NULL))
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return ops->get_chip_id(dev);
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else
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(abx500_get_chip_id);
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int abx500_event_registers_startup_state_get(struct device *dev, u8 *event)
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{
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struct abx500_ops *ops;
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lookup_ops(dev->parent, &ops);
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if ((ops != NULL) && (ops->event_registers_startup_state_get != NULL))
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return ops->event_registers_startup_state_get(dev, event);
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else
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(abx500_event_registers_startup_state_get);
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int abx500_startup_irq_enabled(struct device *dev, unsigned int irq)
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{
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struct abx500_ops *ops;
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lookup_ops(dev->parent, &ops);
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if ((ops != NULL) && (ops->startup_irq_enabled != NULL))
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return ops->startup_irq_enabled(dev, irq);
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else
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(abx500_startup_irq_enabled);
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MODULE_AUTHOR("Mattias Wallin <mattias.wallin@stericsson.com>");
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MODULE_DESCRIPTION("ABX500 core driver");
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MODULE_LICENSE("GPL");
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