2011-07-21 04:35:37 +07:00
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/*
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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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2016-03-30 02:28:33 +07:00
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#include <linux/device.h>
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2011-07-21 04:35:37 +07:00
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#include <linux/regmap.h>
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2011-07-21 04:56:53 +07:00
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#include <linux/fs.h>
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2012-12-10 23:24:29 +07:00
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#include <linux/list.h>
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2013-01-27 21:07:38 +07:00
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#include <linux/wait.h>
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2011-07-21 04:35:37 +07:00
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struct regmap;
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2011-09-19 20:34:00 +07:00
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struct regcache_ops;
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2011-07-21 04:35:37 +07:00
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2012-12-10 23:24:29 +07:00
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struct regmap_debugfs_off_cache {
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struct list_head list;
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off_t min;
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off_t max;
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unsigned int base_reg;
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2013-02-08 19:47:14 +07:00
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unsigned int max_reg;
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2012-12-10 23:24:29 +07:00
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};
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2011-07-21 04:35:37 +07:00
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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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2012-01-18 17:52:25 +07:00
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size_t pad_bytes;
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2011-07-21 04:35:37 +07:00
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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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2012-03-16 08:11:43 +07:00
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void (*format_reg)(void *buf, unsigned int reg, unsigned int shift);
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void (*format_val)(void *buf, unsigned int val, unsigned int shift);
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2013-03-04 08:04:51 +07:00
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unsigned int (*parse_val)(const void *buf);
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void (*parse_inplace)(void *buf);
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2011-07-21 04:35:37 +07:00
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};
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2013-01-27 21:07:38 +07:00
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struct regmap_async {
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struct list_head list;
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struct regmap *map;
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void *work_buf;
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};
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2011-07-21 04:35:37 +07:00
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struct regmap {
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2014-09-11 15:19:49 +07:00
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union {
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struct mutex mutex;
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2014-12-15 15:05:50 +07:00
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struct {
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spinlock_t spinlock;
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unsigned long spinlock_flags;
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};
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2014-09-11 15:19:49 +07:00
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};
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2012-04-05 04:48:28 +07:00
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regmap_lock lock;
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regmap_unlock unlock;
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2012-10-16 20:56:59 +07:00
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void *lock_arg; /* This is passed to lock/unlock functions */
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2015-09-12 06:37:05 +07:00
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gfp_t alloc_flags;
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2011-07-21 04:35:37 +07:00
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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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2012-04-05 04:48:30 +07:00
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void *bus_context;
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2012-05-08 23:44:40 +07:00
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const char *name;
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2011-07-21 04:35:37 +07:00
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2013-10-09 18:28:52 +07:00
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bool async;
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2013-01-27 21:07:38 +07:00
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spinlock_t async_lock;
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wait_queue_head_t async_waitq;
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struct list_head async_list;
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2013-10-08 05:00:24 +07:00
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struct list_head async_free;
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2013-01-27 21:07:38 +07:00
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int async_ret;
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2011-07-21 04:56:53 +07:00
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#ifdef CONFIG_DEBUG_FS
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struct dentry *debugfs;
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2012-04-05 04:48:29 +07:00
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const char *debugfs_name;
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2012-12-06 11:29:05 +07:00
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unsigned int debugfs_reg_len;
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unsigned int debugfs_val_len;
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unsigned int debugfs_tot_len;
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2012-12-10 23:24:29 +07:00
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struct list_head debugfs_off_cache;
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2013-02-20 19:15:23 +07:00
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struct mutex cache_lock;
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2011-07-21 04:56:53 +07:00
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#endif
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2011-07-21 04:35:37 +07:00
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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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2011-08-08 13:41:46 +07:00
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bool (*precious_reg)(struct device *dev, unsigned int reg);
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2012-11-20 21:20:30 +07:00
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const struct regmap_access_table *wr_table;
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const struct regmap_access_table *rd_table;
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const struct regmap_access_table *volatile_table;
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const struct regmap_access_table *precious_table;
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2011-09-06 01:46:32 +07:00
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2013-01-13 03:54:12 +07:00
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int (*reg_read)(void *context, unsigned int reg, unsigned int *val);
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2013-01-13 03:54:13 +07:00
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int (*reg_write)(void *context, unsigned int reg, unsigned int val);
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2015-10-01 23:38:07 +07:00
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int (*reg_update_bits)(void *context, unsigned int reg,
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unsigned int mask, unsigned int val);
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2013-01-13 03:54:12 +07:00
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2013-01-28 01:49:05 +07:00
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bool defer_caching;
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2016-09-16 03:56:10 +07:00
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unsigned long read_flag_mask;
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unsigned long write_flag_mask;
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2011-09-19 20:34:00 +07:00
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2012-03-16 08:11:43 +07:00
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/* number of bits to (left) shift the reg value when formatting*/
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int reg_shift;
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2012-04-10 02:40:24 +07:00
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int reg_stride;
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2016-01-04 17:00:33 +07:00
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int reg_stride_order;
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2012-03-16 08:11:43 +07:00
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2011-09-19 20:34:00 +07:00
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/* regcache specific members */
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const struct regcache_ops *cache_ops;
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enum regcache_type cache_type;
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/* number of bytes in reg_defaults_raw */
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unsigned int cache_size_raw;
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/* number of bytes per word in reg_defaults_raw */
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unsigned int cache_word_size;
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/* number of entries in reg_defaults */
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unsigned int num_reg_defaults;
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/* number of entries in reg_defaults_raw */
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unsigned int num_reg_defaults_raw;
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/* if set, only the cache is modified not the HW */
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2015-09-27 05:04:07 +07:00
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bool cache_only;
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2011-09-19 20:34:00 +07:00
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/* if set, only the HW is modified not the cache */
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2015-09-27 05:04:07 +07:00
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bool cache_bypass;
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2011-09-19 20:34:00 +07:00
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/* if set, remember to free reg_defaults_raw */
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2012-02-07 01:01:35 +07:00
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bool cache_free;
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2011-09-19 20:34:00 +07:00
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struct reg_default *reg_defaults;
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const void *reg_defaults_raw;
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void *cache;
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2015-05-06 05:14:14 +07:00
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/* if set, the cache contains newer data than the HW */
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2015-09-27 05:04:07 +07:00
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bool cache_dirty;
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2015-05-06 05:14:14 +07:00
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/* if set, the HW registers are known to match map->reg_defaults */
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bool no_sync_defaults;
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2012-01-21 19:01:14 +07:00
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2015-07-16 22:36:21 +07:00
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struct reg_sequence *patch;
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2012-01-21 19:01:14 +07:00
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int patch_regs;
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2012-05-01 05:23:40 +07:00
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2015-08-21 15:26:42 +07:00
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/* if set, converts bulk read to single read */
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bool use_single_read;
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/* if set, converts bulk read to single read */
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bool use_single_write;
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2014-03-04 20:54:02 +07:00
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/* if set, the device supports multi write mode */
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bool can_multi_write;
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2012-06-15 17:23:56 +07:00
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2015-08-30 14:33:53 +07:00
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/* if set, raw reads/writes are limited to this size */
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size_t max_raw_read;
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size_t max_raw_write;
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2012-06-15 17:23:56 +07:00
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struct rb_root range_tree;
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void *selector_work_buf; /* Scratch buffer used for selector */
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2011-09-19 20:34:00 +07:00
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};
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struct regcache_ops {
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const char *name;
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enum regcache_type type;
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int (*init)(struct regmap *map);
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int (*exit)(struct regmap *map);
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2014-08-24 20:32:27 +07:00
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#ifdef CONFIG_DEBUG_FS
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void (*debugfs_init)(struct regmap *map);
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#endif
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2011-09-19 20:34:00 +07:00
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int (*read)(struct regmap *map, unsigned int reg, unsigned int *value);
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int (*write)(struct regmap *map, unsigned int reg, unsigned int value);
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2012-02-24 02:31:04 +07:00
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int (*sync)(struct regmap *map, unsigned int min, unsigned int max);
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2013-05-08 19:55:22 +07:00
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int (*drop)(struct regmap *map, unsigned int min, unsigned int max);
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2011-07-21 04:35:37 +07:00
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};
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2016-08-08 22:44:21 +07:00
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bool regmap_cached(struct regmap *map, unsigned int reg);
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2011-08-10 15:14:41 +07:00
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bool regmap_writeable(struct regmap *map, unsigned int reg);
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bool regmap_readable(struct regmap *map, unsigned int reg);
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bool regmap_volatile(struct regmap *map, unsigned int reg);
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bool regmap_precious(struct regmap *map, unsigned int reg);
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2011-09-29 16:39:07 +07:00
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int _regmap_write(struct regmap *map, unsigned int reg,
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unsigned int val);
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2012-06-15 17:23:56 +07:00
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struct regmap_range_node {
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struct rb_node node;
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2012-10-03 18:40:47 +07:00
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const char *name;
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2012-10-03 19:13:16 +07:00
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struct regmap *map;
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2012-06-15 17:23:56 +07:00
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unsigned int range_min;
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unsigned int range_max;
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unsigned int selector_reg;
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unsigned int selector_mask;
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int selector_shift;
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unsigned int window_start;
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unsigned int window_len;
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};
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2013-06-11 19:18:15 +07:00
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struct regmap_field {
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struct regmap *regmap;
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unsigned int mask;
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/* lsb */
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unsigned int shift;
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unsigned int reg;
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2013-09-02 10:30:50 +07:00
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unsigned int id_size;
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unsigned int id_offset;
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2013-06-11 19:18:15 +07:00
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};
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2011-07-21 04:56:53 +07:00
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#ifdef CONFIG_DEBUG_FS
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extern void regmap_debugfs_initcall(void);
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2012-04-05 04:48:29 +07:00
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extern void regmap_debugfs_init(struct regmap *map, const char *name);
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2011-07-21 04:56:53 +07:00
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extern void regmap_debugfs_exit(struct regmap *map);
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#else
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2011-09-06 03:06:13 +07:00
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static inline void regmap_debugfs_initcall(void) { }
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2012-04-06 12:09:20 +07:00
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static inline void regmap_debugfs_init(struct regmap *map, const char *name) { }
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2011-09-06 03:06:13 +07:00
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static inline void regmap_debugfs_exit(struct regmap *map) { }
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2011-07-21 04:56:53 +07:00
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#endif
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2011-09-19 20:34:00 +07:00
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/* regcache core declarations */
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2011-11-16 22:28:16 +07:00
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int regcache_init(struct regmap *map, const struct regmap_config *config);
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2011-09-19 20:34:00 +07:00
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void regcache_exit(struct regmap *map);
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int regcache_read(struct regmap *map,
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unsigned int reg, unsigned int *value);
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int regcache_write(struct regmap *map,
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unsigned int reg, unsigned int value);
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int regcache_sync(struct regmap *map);
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2013-03-30 02:32:28 +07:00
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int regcache_sync_block(struct regmap *map, void *block,
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2013-08-29 15:26:34 +07:00
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unsigned long *cache_present,
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2013-03-30 02:32:28 +07:00
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unsigned int block_base, unsigned int start,
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unsigned int end);
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2011-09-19 20:34:00 +07:00
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2013-03-14 02:29:36 +07:00
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static inline const void *regcache_get_val_addr(struct regmap *map,
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const void *base,
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unsigned int idx)
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{
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return base + (map->cache_word_size * idx);
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}
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2013-02-22 01:03:13 +07:00
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unsigned int regcache_get_val(struct regmap *map, const void *base,
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unsigned int idx);
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bool regcache_set_val(struct regmap *map, void *base, unsigned int idx,
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unsigned int val);
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2011-09-19 20:34:00 +07:00
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int regcache_lookup_reg(struct regmap *map, unsigned int reg);
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2013-03-14 02:19:34 +07:00
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int _regmap_raw_write(struct regmap *map, unsigned int reg,
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2013-10-09 18:28:52 +07:00
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const void *val, size_t val_len);
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2013-03-14 02:19:34 +07:00
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2013-01-27 21:07:38 +07:00
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void regmap_async_complete_cb(struct regmap_async *async, int ret);
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2015-02-04 01:01:18 +07:00
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enum regmap_endian regmap_get_val_endian(struct device *dev,
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const struct regmap_bus *bus,
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const struct regmap_config *config);
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2011-09-19 20:34:02 +07:00
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extern struct regcache_ops regcache_rbtree_ops;
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2011-09-19 20:34:03 +07:00
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extern struct regcache_ops regcache_lzo_ops;
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2012-12-19 21:51:55 +07:00
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extern struct regcache_ops regcache_flat_ops;
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2011-09-19 20:34:03 +07:00
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2015-03-09 18:20:13 +07:00
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static inline const char *regmap_name(const struct regmap *map)
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{
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if (map->dev)
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return dev_name(map->dev);
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return map->name;
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}
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2016-01-04 17:00:33 +07:00
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static inline unsigned int regmap_get_offset(const struct regmap *map,
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unsigned int index)
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{
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if (map->reg_stride_order >= 0)
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return index << map->reg_stride_order;
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else
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return index * map->reg_stride;
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}
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2016-01-04 17:00:34 +07:00
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static inline unsigned int regcache_get_index_by_order(const struct regmap *map,
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unsigned int reg)
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{
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return reg >> map->reg_stride_order;
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}
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2011-07-21 04:35:37 +07:00
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#endif
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