linux/drivers/base/regmap/regcache-rbtree.c

// SPDX-License-Identifier: GPL-2.0
//
// Register cache access API - rbtree caching support
//
// Copyright 2011 Wolfson Microelectronics plc
//
// Author: Dimitris Papastamos <[email protected]>

#include <linux/debugfs.h>
#include <linux/device.h>
#include <linux/rbtree.h>
#include <linux/seq_file.h>
#include <linux/slab.h>

#include "internal.h"

static int regcache_rbtree_write(struct regmap *map, unsigned int reg,
				 unsigned int value);
static int regcache_rbtree_exit(struct regmap *map);

struct regcache_rbtree_node { … };

struct regcache_rbtree_ctx { … };

static inline void regcache_rbtree_get_base_top_reg(
	struct regmap *map,
	struct regcache_rbtree_node *rbnode,
	unsigned int *base, unsigned int *top)
{ … }

static unsigned int regcache_rbtree_get_register(struct regmap *map,
	struct regcache_rbtree_node *rbnode, unsigned int idx)
{ … }

static void regcache_rbtree_set_register(struct regmap *map,
					 struct regcache_rbtree_node *rbnode,
					 unsigned int idx, unsigned int val)
{ … }

static struct regcache_rbtree_node *regcache_rbtree_lookup(struct regmap *map,
							   unsigned int reg)
{ … }

static int regcache_rbtree_insert(struct regmap *map, struct rb_root *root,
				  struct regcache_rbtree_node *rbnode)
{ … }

#ifdef CONFIG_DEBUG_FS
static int rbtree_show(struct seq_file *s, void *ignored)
{ … }

DEFINE_SHOW_ATTRIBUTE(…);

static void rbtree_debugfs_init(struct regmap *map)
{ … }
#endif

static int regcache_rbtree_init(struct regmap *map)
{ … }

static int regcache_rbtree_exit(struct regmap *map)
{ … }

static int regcache_rbtree_read(struct regmap *map,
				unsigned int reg, unsigned int *value)
{ … }


static int regcache_rbtree_insert_to_block(struct regmap *map,
					   struct regcache_rbtree_node *rbnode,
					   unsigned int base_reg,
					   unsigned int top_reg,
					   unsigned int reg,
					   unsigned int value)
{ … }

static struct regcache_rbtree_node *
regcache_rbtree_node_alloc(struct regmap *map, unsigned int reg)
{ … }

static int regcache_rbtree_write(struct regmap *map, unsigned int reg,
				 unsigned int value)
{ … }

static int regcache_rbtree_sync(struct regmap *map, unsigned int min,
				unsigned int max)
{ … }

static int regcache_rbtree_drop(struct regmap *map, unsigned int min,
				unsigned int max)
{ … }

struct regcache_ops regcache_rbtree_ops = …;