mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

regmap: Remove indexed cache type 

There should be no situation where it offers any advantage over rbtree
and there are no current users so remove the code for simplicity.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2011-11-18 16:53:00 +00:00
parent b44d48c1cc
commit 4c69166458
5 changed files with 1 additions and 89 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/base/regmap/Makefile
View File

@ -1,4 +1,4 @@
obj-$(CONFIG_REGMAP) += regmap.o regcache.o regcache-indexed.o
obj-$(CONFIG_REGMAP) += regmap.o regcache.o
obj-$(CONFIG_REGMAP) += regcache-rbtree.o regcache-lzo.o
obj-$(CONFIG_DEBUG_FS) += regmap-debugfs.o
obj-$(CONFIG_REGMAP_I2C) += regmap-i2c.o

3
drivers/base/regmap/internal.h
View File

@ -119,10 +119,7 @@ unsigned int regcache_get_val(const void *base, unsigned int idx,
bool regcache_set_val(void *base, unsigned int idx,
unsigned int val, unsigned int word_size);
int regcache_lookup_reg(struct regmap *map, unsigned int reg);
int regcache_insert_reg(struct regmap *map, unsigned int reg,
unsigned int val);
extern struct regcache_ops regcache_indexed_ops;
extern struct regcache_ops regcache_rbtree_ops;
extern struct regcache_ops regcache_lzo_ops;

64
drivers/base/regmap/regcache-indexed.c
View File

@ -1,64 +0,0 @@
/*
* Register cache access API - indexed caching support
*
* Copyright 2011 Wolfson Microelectronics plc
*
* Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/slab.h>
#include "internal.h"
static int regcache_indexed_read(struct regmap *map, unsigned int reg,
unsigned int *value)
{
int ret;
ret = regcache_lookup_reg(map, reg);
if (ret >= 0)
*value = map->reg_defaults[ret].def;
return ret;
}
static int regcache_indexed_write(struct regmap *map, unsigned int reg,
unsigned int value)
{
int ret;
ret = regcache_lookup_reg(map, reg);
if (ret < 0)
return regcache_insert_reg(map, reg, value);
map->reg_defaults[ret].def = value;
return 0;
}
static int regcache_indexed_sync(struct regmap *map)
{
unsigned int i;
int ret;
for (i = 0; i < map->num_reg_defaults; i++) {
ret = _regmap_write(map, map->reg_defaults[i].reg,
map->reg_defaults[i].def);
if (ret < 0)
return ret;
dev_dbg(map->dev, "Synced register %#x, value %#x\n",
map->reg_defaults[i].reg,
map->reg_defaults[i].def);
}
return 0;
}
struct regcache_ops regcache_indexed_ops = {
.type = REGCACHE_INDEXED,
.name = "indexed",
.read = regcache_indexed_read,
.write = regcache_indexed_write,
.sync = regcache_indexed_sync
};

20
drivers/base/regmap/regcache.c
View File

@ -19,7 +19,6 @@
#include "internal.h"
static const struct regcache_ops *cache_types[] = {
&regcache_indexed_ops,
&regcache_rbtree_ops,
&regcache_lzo_ops,
};
@ -420,22 +419,3 @@ int regcache_lookup_reg(struct regmap *map, unsigned int reg)
else
return -ENOENT;
}
int regcache_insert_reg(struct regmap *map, unsigned int reg,
unsigned int val)
{
void *tmp;
tmp = krealloc(map->reg_defaults,
(map->num_reg_defaults + 1) * sizeof(struct reg_default),
GFP_KERNEL);
if (!tmp)
return -ENOMEM;
map->reg_defaults = tmp;
map->num_reg_defaults++;
map->reg_defaults[map->num_reg_defaults - 1].reg = reg;
map->reg_defaults[map->num_reg_defaults - 1].def = val;
sort(map->reg_defaults, map->num_reg_defaults,
sizeof(struct reg_default), regcache_default_cmp, NULL);
return 0;
}

1
include/linux/regmap.h
View File

@ -23,7 +23,6 @@ struct spi_device;
/* An enum of all the supported cache types */
enum regcache_type {
REGCACHE_NONE,
REGCACHE_INDEXED,
REGCACHE_RBTREE,
REGCACHE_COMPRESSED
};