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-rw-r--r--drivers/base/regmap/internal.h40
-rw-r--r--drivers/base/regmap/regcache-lzo.c6
-rw-r--r--drivers/base/regmap/regcache-rbtree.c100
-rw-r--r--drivers/base/regmap/regcache.c196
-rw-r--r--drivers/base/regmap/regmap-debugfs.c94
-rw-r--r--drivers/base/regmap/regmap-irq.c3
-rw-r--r--drivers/base/regmap/regmap.c92
7 files changed, 413 insertions, 118 deletions
diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h
index 5a22bd33ce3d..c130536e0ab0 100644
--- a/drivers/base/regmap/internal.h
+++ b/drivers/base/regmap/internal.h
@@ -38,7 +38,8 @@ struct regmap_format {
unsigned int reg, unsigned int val);
void (*format_reg)(void *buf, unsigned int reg, unsigned int shift);
void (*format_val)(void *buf, unsigned int val, unsigned int shift);
- unsigned int (*parse_val)(void *buf);
+ unsigned int (*parse_val)(const void *buf);
+ void (*parse_inplace)(void *buf);
};
struct regmap_async {
@@ -76,6 +77,7 @@ struct regmap {
unsigned int debugfs_tot_len;
struct list_head debugfs_off_cache;
+ struct mutex cache_lock;
#endif
unsigned int max_register;
@@ -125,6 +127,9 @@ struct regmap {
void *cache;
u32 cache_dirty;
+ unsigned long *cache_present;
+ unsigned int cache_present_nbits;
+
struct reg_default *patch;
int patch_regs;
@@ -187,12 +192,35 @@ int regcache_read(struct regmap *map,
int regcache_write(struct regmap *map,
unsigned int reg, unsigned int value);
int regcache_sync(struct regmap *map);
-
-unsigned int regcache_get_val(const void *base, unsigned int idx,
- unsigned int word_size);
-bool regcache_set_val(void *base, unsigned int idx,
- unsigned int val, unsigned int word_size);
+int regcache_sync_block(struct regmap *map, void *block,
+ unsigned int block_base, unsigned int start,
+ unsigned int end);
+
+static inline const void *regcache_get_val_addr(struct regmap *map,
+ const void *base,
+ unsigned int idx)
+{
+ return base + (map->cache_word_size * idx);
+}
+
+unsigned int regcache_get_val(struct regmap *map, const void *base,
+ unsigned int idx);
+bool regcache_set_val(struct regmap *map, void *base, unsigned int idx,
+ unsigned int val);
int regcache_lookup_reg(struct regmap *map, unsigned int reg);
+int regcache_set_reg_present(struct regmap *map, unsigned int reg);
+
+static inline bool regcache_reg_present(struct regmap *map, unsigned int reg)
+{
+ if (!map->cache_present)
+ return true;
+ if (reg > map->cache_present_nbits)
+ return false;
+ return map->cache_present[BIT_WORD(reg)] & BIT_MASK(reg);
+}
+
+int _regmap_raw_write(struct regmap *map, unsigned int reg,
+ const void *val, size_t val_len, bool async);
void regmap_async_complete_cb(struct regmap_async *async, int ret);
diff --git a/drivers/base/regmap/regcache-lzo.c b/drivers/base/regmap/regcache-lzo.c
index afd6aa91a0df..e210a6d1406a 100644
--- a/drivers/base/regmap/regcache-lzo.c
+++ b/drivers/base/regmap/regcache-lzo.c
@@ -260,8 +260,7 @@ static int regcache_lzo_read(struct regmap *map,
ret = regcache_lzo_decompress_cache_block(map, lzo_block);
if (ret >= 0)
/* fetch the value from the cache */
- *value = regcache_get_val(lzo_block->dst, blkpos,
- map->cache_word_size);
+ *value = regcache_get_val(map, lzo_block->dst, blkpos);
kfree(lzo_block->dst);
/* restore the pointer and length of the compressed block */
@@ -304,8 +303,7 @@ static int regcache_lzo_write(struct regmap *map,
}
/* write the new value to the cache */
- if (regcache_set_val(lzo_block->dst, blkpos, value,
- map->cache_word_size)) {
+ if (regcache_set_val(map, lzo_block->dst, blkpos, value)) {
kfree(lzo_block->dst);
goto out;
}
diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c
index 79f4fca9877a..aa0875f6f1b7 100644
--- a/drivers/base/regmap/regcache-rbtree.c
+++ b/drivers/base/regmap/regcache-rbtree.c
@@ -47,22 +47,21 @@ static inline void regcache_rbtree_get_base_top_reg(
*top = rbnode->base_reg + ((rbnode->blklen - 1) * map->reg_stride);
}
-static unsigned int regcache_rbtree_get_register(
- struct regcache_rbtree_node *rbnode, unsigned int idx,
- unsigned int word_size)
+static unsigned int regcache_rbtree_get_register(struct regmap *map,
+ struct regcache_rbtree_node *rbnode, unsigned int idx)
{
- return regcache_get_val(rbnode->block, idx, word_size);
+ return regcache_get_val(map, rbnode->block, idx);
}
-static void regcache_rbtree_set_register(struct regcache_rbtree_node *rbnode,
- unsigned int idx, unsigned int val,
- unsigned int word_size)
+static void regcache_rbtree_set_register(struct regmap *map,
+ struct regcache_rbtree_node *rbnode,
+ unsigned int idx, unsigned int val)
{
- regcache_set_val(rbnode->block, idx, val, word_size);
+ regcache_set_val(map, rbnode->block, idx, val);
}
static struct regcache_rbtree_node *regcache_rbtree_lookup(struct regmap *map,
- unsigned int reg)
+ unsigned int reg)
{
struct regcache_rbtree_ctx *rbtree_ctx = map->cache;
struct rb_node *node;
@@ -139,15 +138,21 @@ static int rbtree_show(struct seq_file *s, void *ignored)
struct regcache_rbtree_node *n;
struct rb_node *node;
unsigned int base, top;
+ size_t mem_size;
int nodes = 0;
int registers = 0;
int this_registers, average;
map->lock(map);
+ mem_size = sizeof(*rbtree_ctx);
+ mem_size += BITS_TO_LONGS(map->cache_present_nbits) * sizeof(long);
+
for (node = rb_first(&rbtree_ctx->root); node != NULL;
node = rb_next(node)) {
n = container_of(node, struct regcache_rbtree_node, node);
+ mem_size += sizeof(*n);
+ mem_size += (n->blklen * map->cache_word_size);
regcache_rbtree_get_base_top_reg(map, n, &base, &top);
this_registers = ((top - base) / map->reg_stride) + 1;
@@ -162,8 +167,8 @@ static int rbtree_show(struct seq_file *s, void *ignored)
else
average = 0;
- seq_printf(s, "%d nodes, %d registers, average %d registers\n",
- nodes, registers, average);
+ seq_printf(s, "%d nodes, %d registers, average %d registers, used %zu bytes\n",
+ nodes, registers, average, mem_size);
map->unlock(map);
@@ -260,8 +265,9 @@ static int regcache_rbtree_read(struct regmap *map,
rbnode = regcache_rbtree_lookup(map, reg);
if (rbnode) {
reg_tmp = (reg - rbnode->base_reg) / map->reg_stride;
- *value = regcache_rbtree_get_register(rbnode, reg_tmp,
- map->cache_word_size);
+ if (!regcache_reg_present(map, reg))
+ return -ENOENT;
+ *value = regcache_rbtree_get_register(map, rbnode, reg_tmp);
} else {
return -ENOENT;
}
@@ -270,21 +276,23 @@ static int regcache_rbtree_read(struct regmap *map,
}
-static int regcache_rbtree_insert_to_block(struct regcache_rbtree_node *rbnode,
+static int regcache_rbtree_insert_to_block(struct regmap *map,
+ struct regcache_rbtree_node *rbnode,
unsigned int pos, unsigned int reg,
- unsigned int value, unsigned int word_size)
+ unsigned int value)
{
u8 *blk;
blk = krealloc(rbnode->block,
- (rbnode->blklen + 1) * word_size, GFP_KERNEL);
+ (rbnode->blklen + 1) * map->cache_word_size,
+ GFP_KERNEL);
if (!blk)
return -ENOMEM;
/* insert the register value in the correct place in the rbnode block */
- memmove(blk + (pos + 1) * word_size,
- blk + pos * word_size,
- (rbnode->blklen - pos) * word_size);
+ memmove(blk + (pos + 1) * map->cache_word_size,
+ blk + pos * map->cache_word_size,
+ (rbnode->blklen - pos) * map->cache_word_size);
/* update the rbnode block, its size and the base register */
rbnode->block = blk;
@@ -292,7 +300,7 @@ static int regcache_rbtree_insert_to_block(struct regcache_rbtree_node *rbnode,
if (!pos)
rbnode->base_reg = reg;
- regcache_rbtree_set_register(rbnode, pos, value, word_size);
+ regcache_rbtree_set_register(map, rbnode, pos, value);
return 0;
}
@@ -302,25 +310,24 @@ static int regcache_rbtree_write(struct regmap *map, unsigned int reg,
struct regcache_rbtree_ctx *rbtree_ctx;
struct regcache_rbtree_node *rbnode, *rbnode_tmp;
struct rb_node *node;
- unsigned int val;
unsigned int reg_tmp;
unsigned int pos;
int i;
int ret;
rbtree_ctx = map->cache;
+ /* update the reg_present bitmap, make space if necessary */
+ ret = regcache_set_reg_present(map, reg);
+ if (ret < 0)
+ return ret;
+
/* if we can't locate it in the cached rbnode we'll have
* to traverse the rbtree looking for it.
*/
rbnode = regcache_rbtree_lookup(map, reg);
if (rbnode) {
reg_tmp = (reg - rbnode->base_reg) / map->reg_stride;
- val = regcache_rbtree_get_register(rbnode, reg_tmp,
- map->cache_word_size);
- if (val == value)
- return 0;
- regcache_rbtree_set_register(rbnode, reg_tmp, value,
- map->cache_word_size);
+ regcache_rbtree_set_register(map, rbnode, reg_tmp, value);
} else {
/* look for an adjacent register to the one we are about to add */
for (node = rb_first(&rbtree_ctx->root); node;
@@ -337,9 +344,10 @@ static int regcache_rbtree_write(struct regmap *map, unsigned int reg,
pos = i + 1;
else
pos = i;
- ret = regcache_rbtree_insert_to_block(rbnode_tmp, pos,
- reg, value,
- map->cache_word_size);
+ ret = regcache_rbtree_insert_to_block(map,
+ rbnode_tmp,
+ pos, reg,
+ value);
if (ret)
return ret;
rbtree_ctx->cached_rbnode = rbnode_tmp;
@@ -354,7 +362,7 @@ static int regcache_rbtree_write(struct regmap *map, unsigned int reg,
rbnode = kzalloc(sizeof *rbnode, GFP_KERNEL);
if (!rbnode)
return -ENOMEM;
- rbnode->blklen = 1;
+ rbnode->blklen = sizeof(*rbnode);
rbnode->base_reg = reg;
rbnode->block = kmalloc(rbnode->blklen * map->cache_word_size,
GFP_KERNEL);
@@ -362,7 +370,7 @@ static int regcache_rbtree_write(struct regmap *map, unsigned int reg,
kfree(rbnode);
return -ENOMEM;
}
- regcache_rbtree_set_register(rbnode, 0, value, map->cache_word_size);
+ regcache_rbtree_set_register(map, rbnode, 0, value);
regcache_rbtree_insert(map, &rbtree_ctx->root, rbnode);
rbtree_ctx->cached_rbnode = rbnode;
}
@@ -376,10 +384,8 @@ static int regcache_rbtree_sync(struct regmap *map, unsigned int min,
struct regcache_rbtree_ctx *rbtree_ctx;
struct rb_node *node;
struct regcache_rbtree_node *rbnode;
- unsigned int regtmp;
- unsigned int val;
int ret;
- int i, base, end;
+ int base, end;
rbtree_ctx = map->cache;
for (node = rb_first(&rbtree_ctx->root); node; node = rb_next(node)) {
@@ -402,27 +408,13 @@ static int regcache_rbtree_sync(struct regmap *map, unsigned int min,
else
end = rbnode->blklen;
- for (i = base; i < end; i++) {
- regtmp = rbnode->base_reg + (i * map->reg_stride);
- val = regcache_rbtree_get_register(rbnode, i,
- map->cache_word_size);
-
- /* Is this the hardware default? If so skip. */
- ret = regcache_lookup_reg(map, regtmp);
- if (ret >= 0 && val == map->reg_defaults[ret].def)
- continue;
-
- map->cache_bypass = 1;
- ret = _regmap_write(map, regtmp, val);
- map->cache_bypass = 0;
- if (ret)
- return ret;
- dev_dbg(map->dev, "Synced register %#x, value %#x\n",
- regtmp, val);
- }
+ ret = regcache_sync_block(map, rbnode->block, rbnode->base_reg,
+ base, end);
+ if (ret != 0)
+ return ret;
}
- return 0;
+ return regmap_async_complete(map);
}
struct regcache_ops regcache_rbtree_ops = {
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index e69ff3e4742c..75923f2396bd 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -45,8 +45,8 @@ static int regcache_hw_init(struct regmap *map)
tmp_buf = kmalloc(map->cache_size_raw, GFP_KERNEL);
if (!tmp_buf)
return -EINVAL;
- ret = regmap_bulk_read(map, 0, tmp_buf,
- map->num_reg_defaults_raw);
+ ret = regmap_raw_read(map, 0, tmp_buf,
+ map->num_reg_defaults_raw);
map->cache_bypass = cache_bypass;
if (ret < 0) {
kfree(tmp_buf);
@@ -58,8 +58,7 @@ static int regcache_hw_init(struct regmap *map)
/* calculate the size of reg_defaults */
for (count = 0, i = 0; i < map->num_reg_defaults_raw; i++) {
- val = regcache_get_val(map->reg_defaults_raw,
- i, map->cache_word_size);
+ val = regcache_get_val(map, map->reg_defaults_raw, i);
if (regmap_volatile(map, i * map->reg_stride))
continue;
count++;
@@ -75,8 +74,7 @@ static int regcache_hw_init(struct regmap *map)
/* fill the reg_defaults */
map->num_reg_defaults = count;
for (i = 0, j = 0; i < map->num_reg_defaults_raw; i++) {
- val = regcache_get_val(map->reg_defaults_raw,
- i, map->cache_word_size);
+ val = regcache_get_val(map, map->reg_defaults_raw, i);
if (regmap_volatile(map, i * map->reg_stride))
continue;
map->reg_defaults[j].reg = i * map->reg_stride;
@@ -123,6 +121,8 @@ int regcache_init(struct regmap *map, const struct regmap_config *config)
map->reg_defaults_raw = config->reg_defaults_raw;
map->cache_word_size = DIV_ROUND_UP(config->val_bits, 8);
map->cache_size_raw = map->cache_word_size * config->num_reg_defaults_raw;
+ map->cache_present = NULL;
+ map->cache_present_nbits = 0;
map->cache = NULL;
map->cache_ops = cache_types[i];
@@ -181,6 +181,7 @@ void regcache_exit(struct regmap *map)
BUG_ON(!map->cache_ops);
+ kfree(map->cache_present);
kfree(map->reg_defaults);
if (map->cache_free)
kfree(map->reg_defaults_raw);
@@ -417,28 +418,68 @@ void regcache_cache_bypass(struct regmap *map, bool enable)
}
EXPORT_SYMBOL_GPL(regcache_cache_bypass);
-bool regcache_set_val(void *base, unsigned int idx,
- unsigned int val, unsigned int word_size)
+int regcache_set_reg_present(struct regmap *map, unsigned int reg)
{
- switch (word_size) {
+ unsigned long *cache_present;
+ unsigned int cache_present_size;
+ unsigned int nregs;
+ int i;
+
+ nregs = reg + 1;
+ cache_present_size = BITS_TO_LONGS(nregs);
+ cache_present_size *= sizeof(long);
+
+ if (!map->cache_present) {
+ cache_present = kmalloc(cache_present_size, GFP_KERNEL);
+ if (!cache_present)
+ return -ENOMEM;
+ bitmap_zero(cache_present, nregs);
+ map->cache_present = cache_present;
+ map->cache_present_nbits = nregs;
+ }
+
+ if (nregs > map->cache_present_nbits) {
+ cache_present = krealloc(map->cache_present,
+ cache_present_size, GFP_KERNEL);
+ if (!cache_present)
+ return -ENOMEM;
+ for (i = 0; i < nregs; i++)
+ if (i >= map->cache_present_nbits)
+ clear_bit(i, cache_present);
+ map->cache_present = cache_present;
+ map->cache_present_nbits = nregs;
+ }
+
+ set_bit(reg, map->cache_present);
+ return 0;
+}
+
+bool regcache_set_val(struct regmap *map, void *base, unsigned int idx,
+ unsigned int val)
+{
+ if (regcache_get_val(map, base, idx) == val)
+ return true;
+
+ /* Use device native format if possible */
+ if (map->format.format_val) {
+ map->format.format_val(base + (map->cache_word_size * idx),
+ val, 0);
+ return false;
+ }
+
+ switch (map->cache_word_size) {
case 1: {
u8 *cache = base;
- if (cache[idx] == val)
- return true;
cache[idx] = val;
break;
}
case 2: {
u16 *cache = base;
- if (cache[idx] == val)
- return true;
cache[idx] = val;
break;
}
case 4: {
u32 *cache = base;
- if (cache[idx] == val)
- return true;
cache[idx] = val;
break;
}
@@ -448,13 +489,18 @@ bool regcache_set_val(void *base, unsigned int idx,
return false;
}
-unsigned int regcache_get_val(const void *base, unsigned int idx,
- unsigned int word_size)
+unsigned int regcache_get_val(struct regmap *map, const void *base,
+ unsigned int idx)
{
if (!base)
return -EINVAL;
- switch (word_size) {
+ /* Use device native format if possible */
+ if (map->format.parse_val)
+ return map->format.parse_val(regcache_get_val_addr(map, base,
+ idx));
+
+ switch (map->cache_word_size) {
case 1: {
const u8 *cache = base;
return cache[idx];
@@ -498,3 +544,117 @@ int regcache_lookup_reg(struct regmap *map, unsigned int reg)
else
return -ENOENT;
}
+
+static int regcache_sync_block_single(struct regmap *map, void *block,
+ unsigned int block_base,
+ unsigned int start, unsigned int end)
+{
+ unsigned int i, regtmp, val;
+ int ret;
+
+ for (i = start; i < end; i++) {
+ regtmp = block_base + (i * map->reg_stride);
+
+ if (!regcache_reg_present(map, regtmp))
+ continue;
+
+ val = regcache_get_val(map, block, i);
+
+ /* Is this the hardware default? If so skip. */
+ ret = regcache_lookup_reg(map, regtmp);
+ if (ret >= 0 && val == map->reg_defaults[ret].def)
+ continue;
+
+ map->cache_bypass = 1;
+
+ ret = _regmap_write(map, regtmp, val);
+
+ map->cache_bypass = 0;
+ if (ret != 0)
+ return ret;
+ dev_dbg(map->dev, "Synced register %#x, value %#x\n",
+ regtmp, val);
+ }
+
+ return 0;
+}
+
+static int regcache_sync_block_raw_flush(struct regmap *map, const void **data,
+ unsigned int base, unsigned int cur)
+{
+ size_t val_bytes = map->format.val_bytes;
+ int ret, count;
+
+ if (*data == NULL)
+ return 0;
+
+ count = cur - base;
+
+ dev_dbg(map->dev, "Writing %zu bytes for %d registers from 0x%x-0x%x\n",
+ count * val_bytes, count, base, cur - 1);
+
+ map->cache_bypass = 1;
+
+ ret = _regmap_raw_write(map, base, *data, count * val_bytes,
+ false);
+
+ map->cache_bypass = 0;
+
+ *data = NULL;
+
+ return ret;
+}
+
+static int regcache_sync_block_raw(struct regmap *map, void *block,
+ unsigned int block_base, unsigned int start,
+ unsigned int end)
+{
+ unsigned int i, val;
+ unsigned int regtmp = 0;
+ unsigned int base = 0;
+ const void *data = NULL;
+ int ret;
+
+ for (i = start; i < end; i++) {
+ regtmp = block_base + (i * map->reg_stride);
+
+ if (!regcache_reg_present(map, regtmp)) {
+ ret = regcache_sync_block_raw_flush(map, &data,
+ base, regtmp);
+ if (ret != 0)
+ return ret;
+ continue;
+ }
+
+ val = regcache_get_val(map, block, i);
+
+ /* Is this the hardware default? If so skip. */
+ ret = regcache_lookup_reg(map, regtmp);
+ if (ret >= 0 && val == map->reg_defaults[ret].def) {
+ ret = regcache_sync_block_raw_flush(map, &data,
+ base, regtmp);
+ if (ret != 0)
+ return ret;
+ continue;
+ }
+
+ if (!data) {
+ data = regcache_get_val_addr(map, block, i);
+ base = regtmp;
+ }
+ }
+
+ return regcache_sync_block_raw_flush(map, &data, base, regtmp);
+}
+
+int regcache_sync_block(struct regmap *map, void *block,
+ unsigned int block_base, unsigned int start,
+ unsigned int end)
+{
+ if (regmap_can_raw_write(map))
+ return regcache_sync_block_raw(map, block, block_base,
+ start, end);
+ else
+ return regcache_sync_block_single(map, block, block_base,
+ start, end);
+}
diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c
index 81d6f605c92e..23b701f5fd2f 100644
--- a/drivers/base/regmap/regmap-debugfs.c
+++ b/drivers/base/regmap/regmap-debugfs.c
@@ -88,16 +88,16 @@ static unsigned int regmap_debugfs_get_dump_start(struct regmap *map,
* If we don't have a cache build one so we don't have to do a
* linear scan each time.
*/
+ mutex_lock(&map->cache_lock);
+ i = base;
if (list_empty(&map->debugfs_off_cache)) {
- for (i = base; i <= map->max_register; i += map->reg_stride) {
+ for (; i <= map->max_register; i += map->reg_stride) {
/* Skip unprinted registers, closing off cache entry */
if (!regmap_readable(map, i) ||
regmap_precious(map, i)) {
if (c) {
c->max = p - 1;
- fpos_offset = c->max - c->min;
- reg_offset = fpos_offset / map->debugfs_tot_len;
- c->max_reg = c->base_reg + reg_offset;
+ c->max_reg = i - map->reg_stride;
list_add_tail(&c->list,
&map->debugfs_off_cache);
c = NULL;
@@ -111,6 +111,7 @@ static unsigned int regmap_debugfs_get_dump_start(struct regmap *map,
c = kzalloc(sizeof(*c), GFP_KERNEL);
if (!c) {
regmap_debugfs_free_dump_cache(map);
+ mutex_unlock(&map->cache_lock);
return base;
}
c->min = p;
@@ -124,9 +125,7 @@ static unsigned int regmap_debugfs_get_dump_start(struct regmap *map,
/* Close the last entry off if we didn't scan beyond it */
if (c) {
c->max = p - 1;
- fpos_offset = c->max - c->min;
- reg_offset = fpos_offset / map->debugfs_tot_len;
- c->max_reg = c->base_reg + reg_offset;
+ c->max_reg = i - map->reg_stride;
list_add_tail(&c->list,
&map->debugfs_off_cache);
}
@@ -145,12 +144,14 @@ static unsigned int regmap_debugfs_get_dump_start(struct regmap *map,
fpos_offset = from - c->min;
reg_offset = fpos_offset / map->debugfs_tot_len;
*pos = c->min + (reg_offset * map->debugfs_tot_len);
+ mutex_unlock(&map->cache_lock);
return c->base_reg + reg_offset;
}
*pos = c->max;
ret = c->max_reg;
}
+ mutex_unlock(&map->cache_lock);
return ret;
}
@@ -311,6 +312,79 @@ static const struct file_operations regmap_range_fops = {
.llseek = default_llseek,
};
+static ssize_t regmap_reg_ranges_read_file(struct file *file,
+ char __user *user_buf, size_t count,
+ loff_t *ppos)
+{
+ struct regmap *map = file->private_data;
+ struct regmap_debugfs_off_cache *c;
+ loff_t p = 0;
+ size_t buf_pos = 0;
+ char *buf;
+ char *entry;
+ int ret;
+
+ if (*ppos < 0 || !count)
+ return -EINVAL;
+
+ buf = kmalloc(count, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ entry = kmalloc(PAGE_SIZE, GFP_KERNEL);
+ if (!entry) {
+ kfree(buf);
+ return -ENOMEM;
+ }
+
+ /* While we are at it, build the register dump cache
+ * now so the read() operation on the `registers' file
+ * can benefit from using the cache. We do not care
+ * about the file position information that is contained
+ * in the cache, just about the actual register blocks */
+ regmap_calc_tot_len(map, buf, count);
+ regmap_debugfs_get_dump_start(map, 0, *ppos, &p);
+
+ /* Reset file pointer as the fixed-format of the `registers'
+ * file is not compatible with the `range' file */
+ p = 0;
+ mutex_lock(&map->cache_lock);
+ list_for_each_entry(c, &map->debugfs_off_cache, list) {
+ snprintf(entry, PAGE_SIZE, "%x-%x",
+ c->base_reg, c->max_reg);
+ if (p >= *ppos) {
+ if (buf_pos + 1 + strlen(entry) > count)
+ break;
+ snprintf(buf + buf_pos, count - buf_pos,
+ "%s", entry);
+ buf_pos += strlen(entry);
+ buf[buf_pos] = '\n';
+ buf_pos++;
+ }
+ p += strlen(entry) + 1;
+ }
+ mutex_unlock(&map->cache_lock);
+
+ kfree(entry);
+ ret = buf_pos;
+
+ if (copy_to_user(user_buf, buf, buf_pos)) {
+ ret = -EFAULT;
+ goto out_buf;
+ }
+
+ *ppos += buf_pos;
+out_buf:
+ kfree(buf);
+ return ret;
+}
+
+static const struct file_operations regmap_reg_ranges_fops = {
+ .open = simple_open,
+ .read = regmap_reg_ranges_read_file,
+ .llseek = default_llseek,
+};
+
static ssize_t regmap_access_read_file(struct file *file,
char __user *user_buf, size_t count,
loff_t *ppos)
@@ -385,6 +459,7 @@ void regmap_debugfs_init(struct regmap *map, const char *name)
struct regmap_range_node *range_node;
INIT_LIST_HEAD(&map->debugfs_off_cache);
+ mutex_init(&map->cache_lock);
if (name) {
map->debugfs_name = kasprintf(GFP_KERNEL, "%s-%s",
@@ -403,6 +478,9 @@ void regmap_debugfs_init(struct regmap *map, const char *name)
debugfs_create_file("name", 0400, map->debugfs,
map, &regmap_name_fops);
+ debugfs_create_file("range", 0400, map->debugfs,
+ map, &regmap_reg_ranges_fops);
+
if (map->max_register) {
debugfs_create_file("registers", 0400, map->debugfs,
map, &regmap_map_fops);
@@ -435,7 +513,9 @@ void regmap_debugfs_init(struct regmap *map, const char *name)
void regmap_debugfs_exit(struct regmap *map)
{
debugfs_remove_recursive(map->debugfs);
+ mutex_lock(&map->cache_lock);
regmap_debugfs_free_dump_cache(map);
+ mutex_unlock(&map->cache_lock);
kfree(map->debugfs_name);
}
diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
index 020ea2b9fd2f..1643e889bafc 100644
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -460,7 +460,8 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
ret = request_threaded_irq(irq, NULL, regmap_irq_thread, irq_flags,
chip->name, d);
if (ret != 0) {
- dev_err(map->dev, "Failed to request IRQ %d: %d\n", irq, ret);
+ dev_err(map->dev, "Failed to request IRQ %d for %s: %d\n",
+ irq, chip->name, ret);
goto err_domain;
}
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 58cfb3232428..a941dcfe7590 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -228,30 +228,39 @@ static void regmap_format_32_native(void *buf, unsigned int val,
*(u32 *)buf = val << shift;
}
-static unsigned int regmap_parse_8(void *buf)
+static void regmap_parse_inplace_noop(void *buf)
{
- u8 *b = buf;
+}
+
+static unsigned int regmap_parse_8(const void *buf)
+{
+ const u8 *b = buf;
return b[0];
}
-static unsigned int regmap_parse_16_be(void *buf)
+static unsigned int regmap_parse_16_be(const void *buf)
+{
+ const __be16 *b = buf;
+
+ return be16_to_cpu(b[0]);
+}
+
+static void regmap_parse_16_be_inplace(void *buf)
{
__be16 *b = buf;
b[0] = be16_to_cpu(b[0]);
-
- return b[0];
}
-static unsigned int regmap_parse_16_native(void *buf)
+static unsigned int regmap_parse_16_native(const void *buf)
{
return *(u16 *)buf;
}
-static unsigned int regmap_parse_24(void *buf)
+static unsigned int regmap_parse_24(const void *buf)
{
- u8 *b = buf;
+ const u8 *b = buf;
unsigned int ret = b[2];
ret |= ((unsigned int)b[1]) << 8;
ret |= ((unsigned int)b[0]) << 16;
@@ -259,16 +268,21 @@ static unsigned int regmap_parse_24(void *buf)
return ret;
}
-static unsigned int regmap_parse_32_be(void *buf)
+static unsigned int regmap_parse_32_be(const void *buf)
+{
+ const __be32 *b = buf;
+
+ return be32_to_cpu(b[0]);
+}
+
+static void regmap_parse_32_be_inplace(void *buf)
{
__be32 *b = buf;
b[0] = be32_to_cpu(b[0]);
-
- return b[0];
}
-static unsigned int regmap_parse_32_native(void *buf)
+static unsigned int regmap_parse_32_native(const void *buf)
{
return *(u32 *)buf;
}
@@ -555,16 +569,21 @@ struct regmap *regmap_init(struct device *dev,
goto err_map;
}
+ if (val_endian == REGMAP_ENDIAN_NATIVE)
+ map->format.parse_inplace = regmap_parse_inplace_noop;
+
switch (config->val_bits) {
case 8:
map->format.format_val = regmap_format_8;
map->format.parse_val = regmap_parse_8;
+ map->format.parse_inplace = regmap_parse_inplace_noop;
break;
case 16:
switch (val_endian) {
case REGMAP_ENDIAN_BIG:
map->format.format_val = regmap_format_16_be;
map->format.parse_val = regmap_parse_16_be;
+ map->format.parse_inplace = regmap_parse_16_be_inplace;
break;
case REGMAP_ENDIAN_NATIVE:
map->format.format_val = regmap_format_16_native;
@@ -585,6 +604,7 @@ struct regmap *regmap_init(struct device *dev,
case REGMAP_ENDIAN_BIG:
map->format.format_val = regmap_format_32_be;
map->format.parse_val = regmap_parse_32_be;
+ map->format.parse_inplace = regmap_parse_32_be_inplace;
break;
case REGMAP_ENDIAN_NATIVE:
map->format.format_val = regmap_format_32_native;
@@ -917,8 +937,8 @@ static int _regmap_select_page(struct regmap *map, unsigned int *reg,
return 0;
}
-static int _regmap_raw_write(struct regmap *map, unsigned int reg,
- const void *val, size_t val_len, bool async)
+int _regmap_raw_write(struct regmap *map, unsigned int reg,
+ const void *val, size_t val_len, bool async)
{
struct regmap_range_node *range;
unsigned long flags;
@@ -930,7 +950,7 @@ static int _regmap_raw_write(struct regmap *map, unsigned int reg,
size_t len;
int i;
- BUG_ON(!map->bus);
+ WARN_ON(!map->bus);
/* Check for unwritable registers before we start */
if (map->writeable_reg)
@@ -943,8 +963,7 @@ static int _regmap_raw_write(struct regmap *map, unsigned int reg,
unsigned int ival;
int val_bytes = map->format.val_bytes;
for (i = 0; i < val_len / val_bytes; i++) {
- memcpy(map->work_buf, val + (i * val_bytes), val_bytes);
- ival = map->format.parse_val(map->work_buf);
+ ival = map->format.parse_val(val + (i * val_bytes));
ret = regcache_write(map, reg + (i * map->reg_stride),
ival);
if (ret) {
@@ -999,6 +1018,8 @@ static int _regmap_raw_write(struct regmap *map, unsigned int reg,
if (!async)
return -ENOMEM;
+ trace_regmap_async_write_start(map->dev, reg, val_len);
+
async->work_buf = kzalloc(map->format.buf_size,
GFP_KERNEL | GFP_DMA);
if (!async->work_buf) {
@@ -1079,6 +1100,17 @@ static int _regmap_raw_write(struct regmap *map, unsigned int reg,
return ret;
}
+/**
+ * regmap_can_raw_write - Test if regmap_raw_write() is supported
+ *
+ * @map: Map to check.
+ */
+bool regmap_can_raw_write(struct regmap *map)
+{
+ return map->bus && map->format.format_val && map->format.format_reg;
+}
+EXPORT_SYMBOL_GPL(regmap_can_raw_write);
+
static int _regmap_bus_formatted_write(void *context, unsigned int reg,
unsigned int val)
{
@@ -1086,7 +1118,7 @@ static int _regmap_bus_formatted_write(void *context, unsigned int reg,
struct regmap_range_node *range;
struct regmap *map = context;
- BUG_ON(!map->bus || !map->format.format_write);
+ WARN_ON(!map->bus || !map->format.format_write);
range = _regmap_range_lookup(map, reg);
if (range) {
@@ -1112,7 +1144,7 @@ static int _regmap_bus_raw_write(void *context, unsigned int reg,
{
struct regmap *map = context;
- BUG_ON(!map->bus || !map->format.format_val);
+ WARN_ON(!map->bus || !map->format.format_val);
map->format.format_val(map->work_buf + map->format.reg_bytes
+ map->format.pad_bytes, val, 0);
@@ -1202,12 +1234,10 @@ int regmap_raw_write(struct regmap *map, unsigned int reg,
{
int ret;
- if (!map->bus)
+ if (!regmap_can_raw_write(map))
return -EINVAL;
if (val_len % map->format.val_bytes)
return -EINVAL;
- if (reg % map->reg_stride)
- return -EINVAL;
map->lock(map->lock_arg);
@@ -1242,7 +1272,7 @@ int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val,
if (!map->bus)
return -EINVAL;
- if (!map->format.parse_val)
+ if (!map->format.parse_inplace)
return -EINVAL;
if (reg % map->reg_stride)
return -EINVAL;
@@ -1260,7 +1290,7 @@ int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val,
goto out;
}
for (i = 0; i < val_count * val_bytes; i += val_bytes)
- map->format.parse_val(wval + i);
+ map->format.parse_inplace(wval + i);
}
/*
* Some devices does not support bulk write, for
@@ -1338,7 +1368,7 @@ static int _regmap_raw_read(struct regmap *map, unsigned int reg, void *val,
u8 *u8 = map->work_buf;
int ret;
- BUG_ON(!map->bus);
+ WARN_ON(!map->bus);
range = _regmap_range_lookup(map, reg);
if (range) {
@@ -1393,7 +1423,7 @@ static int _regmap_read(struct regmap *map, unsigned int reg,
int ret;
void *context = _regmap_map_get_context(map);
- BUG_ON(!map->reg_read);
+ WARN_ON(!map->reg_read);
if (!map->cache_bypass) {
ret = regcache_read(map, reg, val);
@@ -1521,7 +1551,7 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
if (!map->bus)
return -EINVAL;
- if (!map->format.parse_val)
+ if (!map->format.parse_inplace)
return -EINVAL;
if (reg % map->reg_stride)
return -EINVAL;
@@ -1548,7 +1578,7 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
}
for (i = 0; i < val_count * val_bytes; i += val_bytes)
- map->format.parse_val(val + i);
+ map->format.parse_inplace(val + i);
} else {
for (i = 0; i < val_count; i++) {
unsigned int ival;
@@ -1642,6 +1672,8 @@ void regmap_async_complete_cb(struct regmap_async *async, int ret)
struct regmap *map = async->map;
bool wake;
+ trace_regmap_async_io_complete(map->dev);
+
spin_lock(&map->async_lock);
list_del(&async->list);
@@ -1688,6 +1720,8 @@ int regmap_async_complete(struct regmap *map)
if (!map->bus->async_write)
return 0;
+ trace_regmap_async_complete_start(map->dev);
+
wait_event(map->async_waitq, regmap_async_is_done(map));
spin_lock_irqsave(&map->async_lock, flags);
@@ -1695,6 +1729,8 @@ int regmap_async_complete(struct regmap *map)
map->async_ret = 0;
spin_unlock_irqrestore(&map->async_lock, flags);
+ trace_regmap_async_complete_done(map->dev);
+
return ret;
}
EXPORT_SYMBOL_GPL(regmap_async_complete);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-23 11:08:59 +0300