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62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/*
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* Register map access API internal header
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*
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* Copyright 2011 Wolfson Microelectronics plc
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*
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* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef _REGMAP_INTERNAL_H
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#define _REGMAP_INTERNAL_H
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#include <linux/regmap.h>
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#include <linux/fs.h>
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struct regmap;
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struct regmap_format {
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size_t buf_size;
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size_t reg_bytes;
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size_t val_bytes;
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void (*format_write)(struct regmap *map,
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unsigned int reg, unsigned int val);
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void (*format_reg)(void *buf, unsigned int reg);
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void (*format_val)(void *buf, unsigned int val);
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unsigned int (*parse_val)(void *buf);
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};
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struct regmap {
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struct mutex lock;
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struct device *dev; /* Device we do I/O on */
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void *work_buf; /* Scratch buffer used to format I/O */
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struct regmap_format format; /* Buffer format */
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const struct regmap_bus *bus;
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#ifdef CONFIG_DEBUG_FS
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struct dentry *debugfs;
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#endif
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unsigned int max_register;
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bool (*writeable_reg)(struct device *dev, unsigned int reg);
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bool (*readable_reg)(struct device *dev, unsigned int reg);
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bool (*volatile_reg)(struct device *dev, unsigned int reg);
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bool (*precious_reg)(struct device *dev, unsigned int reg);
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};
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#ifdef CONFIG_DEBUG_FS
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extern void regmap_debugfs_initcall(void);
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extern void regmap_debugfs_init(struct regmap *map);
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extern void regmap_debugfs_exit(struct regmap *map);
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#else
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void regmap_debugfs_initcall(void) { }
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void regmap_debugfs_init(struct regmap *map) { }
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void regmap_debugfs_exit(struct regmap *map) { }
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#endif
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#endif
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