---

yaml
---
r: 280554
b: refs/heads/master
c: d23511f
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: cce585ce1ebd5307c9709e24758d5eb8a1e087a7
+refs/heads/master: d23511f9590870effa5ace575b59aac18c47175f

trunk/drivers/base/regmap/Makefile

@@ -1,5 +1,4 @@
-obj-$(CONFIG_REGMAP) += regmap.o regcache.o
-obj-$(CONFIG_REGMAP) += regcache-rbtree.o regcache-lzo.o
+obj-$(CONFIG_REGMAP) += regmap.o regcache.o regcache-indexed.o regcache-rbtree.o regcache-lzo.o
 obj-$(CONFIG_DEBUG_FS) += regmap-debugfs.o
 obj-$(CONFIG_REGMAP_I2C) += regmap-i2c.o
 obj-$(CONFIG_REGMAP_SPI) += regmap-spi.o

trunk/drivers/base/regmap/internal.h

@@ -74,7 +74,6 @@ struct regmap {
 	struct reg_default *reg_defaults;
 	const void *reg_defaults_raw;
 	void *cache;
-	bool cache_dirty;
 };
 
 struct regcache_ops {
@@ -106,7 +105,7 @@ static inline void regmap_debugfs_exit(struct regmap *map) { }
 #endif
 
 /* regcache core declarations */
-int regcache_init(struct regmap *map, const struct regmap_config *config);
+int regcache_init(struct regmap *map);
 void regcache_exit(struct regmap *map);
 int regcache_read(struct regmap *map,
 		       unsigned int reg, unsigned int *value);
@@ -119,7 +118,10 @@ 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;
 

trunk/drivers/base/regmap/regcache-indexed.c

@@ -0,0 +1,64 @@
+/*
+ * 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
+};

trunk/drivers/base/regmap/regcache-lzo.c

@@ -15,8 +15,6 @@
 
 #include "internal.h"
 
-static int regcache_lzo_exit(struct regmap *map);
-
 struct regcache_lzo_ctx {
 	void *wmem;
 	void *dst;
@@ -29,7 +27,7 @@ struct regcache_lzo_ctx {
 };
 
 #define LZO_BLOCK_NUM 8
-static int regcache_lzo_block_count(struct regmap *map)
+static int regcache_lzo_block_count(void)
 {
 	return LZO_BLOCK_NUM;
 }
@@ -108,22 +106,19 @@ static inline int regcache_lzo_get_blkindex(struct regmap *map,
 					    unsigned int reg)
 {
 	return (reg * map->cache_word_size) /
-		DIV_ROUND_UP(map->cache_size_raw,
-			     regcache_lzo_block_count(map));
+		DIV_ROUND_UP(map->cache_size_raw, regcache_lzo_block_count());
 }
 
 static inline int regcache_lzo_get_blkpos(struct regmap *map,
 					  unsigned int reg)
 {
-	return reg % (DIV_ROUND_UP(map->cache_size_raw,
-				   regcache_lzo_block_count(map)) /
+	return reg % (DIV_ROUND_UP(map->cache_size_raw, regcache_lzo_block_count()) /
 		      map->cache_word_size);
 }
 
 static inline int regcache_lzo_get_blksize(struct regmap *map)
 {
-	return DIV_ROUND_UP(map->cache_size_raw,
-			    regcache_lzo_block_count(map));
+	return DIV_ROUND_UP(map->cache_size_raw, regcache_lzo_block_count());
 }
 
 static int regcache_lzo_init(struct regmap *map)
@@ -136,7 +131,7 @@ static int regcache_lzo_init(struct regmap *map)
 
 	ret = 0;
 
-	blkcount = regcache_lzo_block_count(map);
+	blkcount = regcache_lzo_block_count();
 	map->cache = kzalloc(blkcount * sizeof *lzo_blocks,
 			     GFP_KERNEL);
 	if (!map->cache)
@@ -195,7 +190,7 @@ static int regcache_lzo_init(struct regmap *map)
 
 	return 0;
 err:
-	regcache_lzo_exit(map);
+	regcache_exit(map);
 	return ret;
 }
 
@@ -208,7 +203,7 @@ static int regcache_lzo_exit(struct regmap *map)
 	if (!lzo_blocks)
 		return 0;
 
-	blkcount = regcache_lzo_block_count(map);
+	blkcount = regcache_lzo_block_count();
 	/*
 	 * the pointer to the bitmap used for syncing the cache
 	 * is shared amongst all lzo_blocks.  Ensure it is freed
@@ -356,7 +351,7 @@ static int regcache_lzo_sync(struct regmap *map)
 }
 
 struct regcache_ops regcache_lzo_ops = {
-	.type = REGCACHE_COMPRESSED,
+	.type = REGCACHE_LZO,
 	.name = "lzo",
 	.init = regcache_lzo_init,
 	.exit = regcache_lzo_exit,

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

@@ -11,15 +11,12 @@
  */
 
 #include <linux/slab.h>
-#include <linux/debugfs.h>
 #include <linux/rbtree.h>
-#include <linux/seq_file.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 {
 	/* the actual rbtree node holding this block */
@@ -127,60 +124,6 @@ static int regcache_rbtree_insert(struct rb_root *root,
 	return 1;
 }
 
-#ifdef CONFIG_DEBUG_FS
-static int rbtree_show(struct seq_file *s, void *ignored)
-{
-	struct regmap *map = s->private;
-	struct regcache_rbtree_ctx *rbtree_ctx = map->cache;
-	struct regcache_rbtree_node *n;
-	struct rb_node *node;
-	unsigned int base, top;
-	int nodes = 0;
-	int registers = 0;
-
-	mutex_lock(&map->lock);
-
-	for (node = rb_first(&rbtree_ctx->root); node != NULL;
-	     node = rb_next(node)) {
-		n = container_of(node, struct regcache_rbtree_node, node);
-
-		regcache_rbtree_get_base_top_reg(n, &base, &top);
-		seq_printf(s, "%x-%x (%d)\n", base, top, top - base + 1);
-
-		nodes++;
-		registers += top - base + 1;
-	}
-
-	seq_printf(s, "%d nodes, %d registers, average %d registers\n",
-		   nodes, registers, registers / nodes);
-
-	mutex_unlock(&map->lock);
-
-	return 0;
-}
-
-static int rbtree_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, rbtree_show, inode->i_private);
-}
-
-static const struct file_operations rbtree_fops = {
-	.open		= rbtree_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-};
-
-static void rbtree_debugfs_init(struct regmap *map)
-{
-	debugfs_create_file("rbtree", 0400, map->debugfs, map, &rbtree_fops);
-}
-#else
-static void rbtree_debugfs_init(struct regmap *map)
-{
-}
-#endif
-
 static int regcache_rbtree_init(struct regmap *map)
 {
 	struct regcache_rbtree_ctx *rbtree_ctx;
@@ -203,12 +146,10 @@ static int regcache_rbtree_init(struct regmap *map)
 			goto err;
 	}
 
-	rbtree_debugfs_init(map);
-
 	return 0;
 
 err:
-	regcache_rbtree_exit(map);
+	regcache_exit(map);
 	return ret;
 }