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Merge branches 'topic/hwspinlock' and 'topic/nolock' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap into regmap-const

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This commit is contained in:
Mark Brown 2017-12-13 16:46:37 +00:00
commit 4045559c09
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4 changed files with 25 additions and 1 deletions
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8
drivers/base/regmap/internal.h
View File

@ -77,6 +77,7 @@ struct regmap {
int async_ret;
#ifdef CONFIG_DEBUG_FS
bool debugfs_disable;
struct dentry *debugfs;
const char *debugfs_name;
@ -215,10 +216,17 @@ struct regmap_field {
extern void regmap_debugfs_initcall(void);
extern void regmap_debugfs_init(struct regmap *map, const char *name);
extern void regmap_debugfs_exit(struct regmap *map);
static inline void regmap_debugfs_disable(struct regmap *map)
{
map->debugfs_disable = true;
}
#else
static inline void regmap_debugfs_initcall(void) { }
static inline void regmap_debugfs_init(struct regmap *map, const char *name) { }
static inline void regmap_debugfs_exit(struct regmap *map) { }
static inline void regmap_debugfs_disable(struct regmap *map) { }
#endif
/* regcache core declarations */

3
drivers/base/regmap/regmap-debugfs.c
View File

@ -529,6 +529,9 @@ void regmap_debugfs_init(struct regmap *map, const char *name)
struct regmap_range_node *range_node;
const char *devname = "dummy";
if (map->debugfs_disable)
return;
/* If we don't have the debugfs root yet, postpone init */
if (!regmap_debugfs_root) {
struct regmap_debugfs_node *node;

10
drivers/base/regmap/regmap.c
View File

@ -457,6 +457,11 @@ static void regmap_unlock_hwlock_irqrestore(void *__map)
hwspin_unlock_irqrestore(map->hwlock, &map->spinlock_flags);
}
static void regmap_lock_unlock_none(void *__map)
{
}
static void regmap_lock_mutex(void *__map)
{
struct regmap *map = __map;
@ -667,7 +672,10 @@ struct regmap *__regmap_init(struct device *dev,
goto err;
}
if (config->lock && config->unlock) {
if (config->disable_locking) {
map->lock = map->unlock = regmap_lock_unlock_none;
regmap_debugfs_disable(map);
} else if (config->lock && config->unlock) {
map->lock = config->lock;
map->unlock = config->unlock;
map->lock_arg = config->lock_arg;

5
include/linux/regmap.h
View File

@ -264,6 +264,9 @@ typedef void (*regmap_unlock)(void *);
* field is NULL but precious_table (see below) is not, the
* check is performed on such table (a register is precious if
* it belongs to one of the ranges specified by precious_table).
* @disable_locking: This regmap is either protected by external means or
* is guaranteed not be be accessed from multiple threads.
* Don't use any locking mechanisms.
* @lock: Optional lock callback (overrides regmap's default lock
* function, based on spinlock or mutex).
* @unlock: As above for unlocking.
@ -333,6 +336,8 @@ struct regmap_config {
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);
bool disable_locking;
regmap_lock lock;
regmap_unlock unlock;
void *lock_arg;