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hwspinlock: Add one new API to support getting a specific hwlock by the name

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The hardware spinlock binding already supplied the 'hwlock-names' property
to match and get a specific hwlock, but did not supply one API for users
to get a specific hwlock by the hwlock name. So this patch introduces one
API to support this requirement.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Baolin Wang 2018-06-22 16:08:58 +08:00 • committed by Bjorn Andersson
parent ce397d215c
commit 5560f70cad
2 changed files with 36 additions and 0 deletions
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7
include/linux/hwspinlock.h
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@ -66,6 +66,7 @@ int __hwspin_lock_timeout(struct hwspinlock *, unsigned int, int,
unsigned long *);
int __hwspin_trylock(struct hwspinlock *, int, unsigned long *);
void __hwspin_unlock(struct hwspinlock *, int, unsigned long *);
int of_hwspin_lock_get_id_byname(struct device_node *np, const char *name);
#else /* !CONFIG_HWSPINLOCK */
@ -125,6 +126,12 @@ static inline int hwspin_lock_get_id(struct hwspinlock *hwlock)
return 0;
}
static inline
int of_hwspin_lock_get_id_byname(struct device_node *np, const char *name)
{
return 0;
}
#endif /* !CONFIG_HWSPINLOCK */
/**