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authorMark Brown <broonie@opensource.wolfsonmicro.com>2012-12-11 12:39:32 +0900
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-12-11 12:39:32 +0900
commit8e24a6e696ebdc44513357ac00b6ee18f54e69f5 (patch)
tree82cc7ac9259a9f20159f9265aca52533b1cb3ca8 /drivers/base
parentdb760fbecd3d609098ef4121d7988ff2a5db15d1 (diff)
parent76aad392f75e6ce5be3f106554e16f7ff96543e5 (diff)
downloadblackbird-op-linux-8e24a6e696ebdc44513357ac00b6ee18f54e69f5.tar.gz
blackbird-op-linux-8e24a6e696ebdc44513357ac00b6ee18f54e69f5.zip
Merge remote-tracking branch 'regmap/topic/table' into regmap-next
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/regmap/internal.h4
-rw-r--r--drivers/base/regmap/regmap.c46
2 files changed, 50 insertions, 0 deletions
diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h
index 0fadeba64ce0..401d1919635a 100644
--- a/drivers/base/regmap/internal.h
+++ b/drivers/base/regmap/internal.h
@@ -69,6 +69,10 @@ struct regmap {
bool (*readable_reg)(struct device *dev, unsigned int reg);
bool (*volatile_reg)(struct device *dev, unsigned int reg);
bool (*precious_reg)(struct device *dev, unsigned int reg);
+ const struct regmap_access_table *wr_table;
+ const struct regmap_access_table *rd_table;
+ const struct regmap_access_table *volatile_table;
+ const struct regmap_access_table *precious_table;
u8 read_flag_mask;
u8 write_flag_mask;
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 64eb8350a074..96f7e8523ee8 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -34,6 +34,36 @@ static int _regmap_update_bits(struct regmap *map, unsigned int reg,
unsigned int mask, unsigned int val,
bool *change);
+bool regmap_reg_in_ranges(unsigned int reg,
+ const struct regmap_range *ranges,
+ unsigned int nranges)
+{
+ const struct regmap_range *r;
+ int i;
+
+ for (i = 0, r = ranges; i < nranges; i++, r++)
+ if (regmap_reg_in_range(reg, r))
+ return true;
+ return false;
+}
+EXPORT_SYMBOL_GPL(regmap_reg_in_ranges);
+
+static bool _regmap_check_range_table(struct regmap *map,
+ unsigned int reg,
+ const struct regmap_access_table *table)
+{
+ /* Check "no ranges" first */
+ if (regmap_reg_in_ranges(reg, table->no_ranges, table->n_no_ranges))
+ return false;
+
+ /* In case zero "yes ranges" are supplied, any reg is OK */
+ if (!table->n_yes_ranges)
+ return true;
+
+ return regmap_reg_in_ranges(reg, table->yes_ranges,
+ table->n_yes_ranges);
+}
+
bool regmap_writeable(struct regmap *map, unsigned int reg)
{
if (map->max_register && reg > map->max_register)
@@ -42,6 +72,9 @@ bool regmap_writeable(struct regmap *map, unsigned int reg)
if (map->writeable_reg)
return map->writeable_reg(map->dev, reg);
+ if (map->wr_table)
+ return _regmap_check_range_table(map, reg, map->wr_table);
+
return true;
}
@@ -56,6 +89,9 @@ bool regmap_readable(struct regmap *map, unsigned int reg)
if (map->readable_reg)
return map->readable_reg(map->dev, reg);
+ if (map->rd_table)
+ return _regmap_check_range_table(map, reg, map->rd_table);
+
return true;
}
@@ -67,6 +103,9 @@ bool regmap_volatile(struct regmap *map, unsigned int reg)
if (map->volatile_reg)
return map->volatile_reg(map->dev, reg);
+ if (map->volatile_table)
+ return _regmap_check_range_table(map, reg, map->volatile_table);
+
return true;
}
@@ -78,6 +117,9 @@ bool regmap_precious(struct regmap *map, unsigned int reg)
if (map->precious_reg)
return map->precious_reg(map->dev, reg);
+ if (map->precious_table)
+ return _regmap_check_range_table(map, reg, map->precious_table);
+
return false;
}
@@ -370,6 +412,10 @@ struct regmap *regmap_init(struct device *dev,
map->bus = bus;
map->bus_context = bus_context;
map->max_register = config->max_register;
+ map->wr_table = config->wr_table;
+ map->rd_table = config->rd_table;
+ map->volatile_table = config->volatile_table;
+ map->precious_table = config->precious_table;
map->writeable_reg = config->writeable_reg;
map->readable_reg = config->readable_reg;
map->volatile_reg = config->volatile_reg;
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