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path: root/drivers/base/regmap/regmap.c
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Diffstat (limited to 'drivers/base/regmap/regmap.c')
-rw-r--r--drivers/base/regmap/regmap.c73
1 files changed, 54 insertions, 19 deletions
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 7111d04f2621..0a849eeaf952 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -34,7 +34,7 @@
static int _regmap_update_bits(struct regmap *map, unsigned int reg,
unsigned int mask, unsigned int val,
- bool *change);
+ bool *change, bool force_write);
static int _regmap_bus_reg_read(void *context, unsigned int reg,
unsigned int *val);
@@ -1178,7 +1178,7 @@ static int _regmap_select_page(struct regmap *map, unsigned int *reg,
ret = _regmap_update_bits(map, range->selector_reg,
range->selector_mask,
win_page << range->selector_shift,
- &page_chg);
+ &page_chg, false);
map->work_buf = orig_work_buf;
@@ -1624,6 +1624,18 @@ int regmap_fields_write(struct regmap_field *field, unsigned int id,
}
EXPORT_SYMBOL_GPL(regmap_fields_write);
+int regmap_fields_force_write(struct regmap_field *field, unsigned int id,
+ unsigned int val)
+{
+ if (id >= field->id_size)
+ return -EINVAL;
+
+ return regmap_write_bits(field->regmap,
+ field->reg + (field->id_offset * id),
+ field->mask, val << field->shift);
+}
+EXPORT_SYMBOL_GPL(regmap_fields_force_write);
+
/**
* regmap_fields_update_bits(): Perform a read/modify/write cycle
* on the register field
@@ -1743,7 +1755,7 @@ EXPORT_SYMBOL_GPL(regmap_bulk_write);
* relative. The page register has been written if that was neccessary.
*/
static int _regmap_raw_multi_reg_write(struct regmap *map,
- const struct reg_default *regs,
+ const struct reg_sequence *regs,
size_t num_regs)
{
int ret;
@@ -1800,12 +1812,12 @@ static unsigned int _regmap_register_page(struct regmap *map,
}
static int _regmap_range_multi_paged_reg_write(struct regmap *map,
- struct reg_default *regs,
+ struct reg_sequence *regs,
size_t num_regs)
{
int ret;
int i, n;
- struct reg_default *base;
+ struct reg_sequence *base;
unsigned int this_page = 0;
/*
* the set of registers are not neccessarily in order, but
@@ -1843,7 +1855,7 @@ static int _regmap_range_multi_paged_reg_write(struct regmap *map,
}
static int _regmap_multi_reg_write(struct regmap *map,
- const struct reg_default *regs,
+ const struct reg_sequence *regs,
size_t num_regs)
{
int i;
@@ -1895,8 +1907,8 @@ static int _regmap_multi_reg_write(struct regmap *map,
struct regmap_range_node *range;
range = _regmap_range_lookup(map, reg);
if (range) {
- size_t len = sizeof(struct reg_default)*num_regs;
- struct reg_default *base = kmemdup(regs, len,
+ size_t len = sizeof(struct reg_sequence)*num_regs;
+ struct reg_sequence *base = kmemdup(regs, len,
GFP_KERNEL);
if (!base)
return -ENOMEM;
@@ -1929,7 +1941,7 @@ static int _regmap_multi_reg_write(struct regmap *map,
* A value of zero will be returned on success, a negative errno will be
* returned in error cases.
*/
-int regmap_multi_reg_write(struct regmap *map, const struct reg_default *regs,
+int regmap_multi_reg_write(struct regmap *map, const struct reg_sequence *regs,
int num_regs)
{
int ret;
@@ -1962,7 +1974,7 @@ EXPORT_SYMBOL_GPL(regmap_multi_reg_write);
* be returned in error cases.
*/
int regmap_multi_reg_write_bypassed(struct regmap *map,
- const struct reg_default *regs,
+ const struct reg_sequence *regs,
int num_regs)
{
int ret;
@@ -2327,7 +2339,7 @@ EXPORT_SYMBOL_GPL(regmap_bulk_read);
static int _regmap_update_bits(struct regmap *map, unsigned int reg,
unsigned int mask, unsigned int val,
- bool *change)
+ bool *change, bool force_write)
{
int ret;
unsigned int tmp, orig;
@@ -2339,7 +2351,7 @@ static int _regmap_update_bits(struct regmap *map, unsigned int reg,
tmp = orig & ~mask;
tmp |= val & mask;
- if (tmp != orig) {
+ if (force_write || (tmp != orig)) {
ret = _regmap_write(map, reg, tmp);
if (change)
*change = true;
@@ -2367,7 +2379,7 @@ int regmap_update_bits(struct regmap *map, unsigned int reg,
int ret;
map->lock(map->lock_arg);
- ret = _regmap_update_bits(map, reg, mask, val, NULL);
+ ret = _regmap_update_bits(map, reg, mask, val, NULL, false);
map->unlock(map->lock_arg);
return ret;
@@ -2375,6 +2387,29 @@ int regmap_update_bits(struct regmap *map, unsigned int reg,
EXPORT_SYMBOL_GPL(regmap_update_bits);
/**
+ * regmap_write_bits: Perform a read/modify/write cycle on the register map
+ *
+ * @map: Register map to update
+ * @reg: Register to update
+ * @mask: Bitmask to change
+ * @val: New value for bitmask
+ *
+ * Returns zero for success, a negative number on error.
+ */
+int regmap_write_bits(struct regmap *map, unsigned int reg,
+ unsigned int mask, unsigned int val)
+{
+ int ret;
+
+ map->lock(map->lock_arg);
+ ret = _regmap_update_bits(map, reg, mask, val, NULL, true);
+ map->unlock(map->lock_arg);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(regmap_write_bits);
+
+/**
* regmap_update_bits_async: Perform a read/modify/write cycle on the register
* map asynchronously
*
@@ -2398,7 +2433,7 @@ int regmap_update_bits_async(struct regmap *map, unsigned int reg,
map->async = true;
- ret = _regmap_update_bits(map, reg, mask, val, NULL);
+ ret = _regmap_update_bits(map, reg, mask, val, NULL, false);
map->async = false;
@@ -2427,7 +2462,7 @@ int regmap_update_bits_check(struct regmap *map, unsigned int reg,
int ret;
map->lock(map->lock_arg);
- ret = _regmap_update_bits(map, reg, mask, val, change);
+ ret = _regmap_update_bits(map, reg, mask, val, change, false);
map->unlock(map->lock_arg);
return ret;
}
@@ -2460,7 +2495,7 @@ int regmap_update_bits_check_async(struct regmap *map, unsigned int reg,
map->async = true;
- ret = _regmap_update_bits(map, reg, mask, val, change);
+ ret = _regmap_update_bits(map, reg, mask, val, change, false);
map->async = false;
@@ -2552,10 +2587,10 @@ EXPORT_SYMBOL_GPL(regmap_async_complete);
* The caller must ensure that this function cannot be called
* concurrently with either itself or regcache_sync().
*/
-int regmap_register_patch(struct regmap *map, const struct reg_default *regs,
+int regmap_register_patch(struct regmap *map, const struct reg_sequence *regs,
int num_regs)
{
- struct reg_default *p;
+ struct reg_sequence *p;
int ret;
bool bypass;
@@ -2564,7 +2599,7 @@ int regmap_register_patch(struct regmap *map, const struct reg_default *regs,
return 0;
p = krealloc(map->patch,
- sizeof(struct reg_default) * (map->patch_regs + num_regs),
+ sizeof(struct reg_sequence) * (map->patch_regs + num_regs),
GFP_KERNEL);
if (p) {
memcpy(p + map->patch_regs, regs, num_regs * sizeof(*regs));
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-06 06:54:25 +0000