Commit 22815f18 authored by Thierry Reding's avatar Thierry Reding Committed by Philipp Zabel

reset: Add acquire/release support for arrays

Add implementations that apply acquire and release operations to all
reset controls part of a reset control array.
Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
Reviewed-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
parent f31d5c24
......@@ -245,6 +245,34 @@ static int reset_control_array_deassert(struct reset_control_array *resets)
return ret;
}
static int reset_control_array_acquire(struct reset_control_array *resets)
{
unsigned int i;
int err;
for (i = 0; i < resets->num_rstcs; i++) {
err = reset_control_acquire(resets->rstc[i]);
if (err < 0)
goto release;
}
return 0;
release:
while (i--)
reset_control_release(resets->rstc[i]);
return err;
}
static void reset_control_array_release(struct reset_control_array *resets)
{
unsigned int i;
for (i = 0; i < resets->num_rstcs; i++)
reset_control_release(resets->rstc[i]);
}
static inline bool reset_control_is_array(struct reset_control *rstc)
{
return rstc->array;
......@@ -464,6 +492,9 @@ int reset_control_acquire(struct reset_control *rstc)
if (WARN_ON(IS_ERR(rstc)))
return -EINVAL;
if (reset_control_is_array(rstc))
return reset_control_array_acquire(rstc_to_array(rstc));
mutex_lock(&reset_list_mutex);
if (rstc->acquired) {
......@@ -502,6 +533,9 @@ void reset_control_release(struct reset_control *rstc)
if (!rstc || WARN_ON(IS_ERR(rstc)))
return;
if (reset_control_is_array(rstc))
reset_control_array_release(rstc_to_array(rstc));
else
rstc->acquired = false;
}
EXPORT_SYMBOL_GPL(reset_control_release);
......
......@@ -470,6 +470,12 @@ of_reset_control_array_get_exclusive(struct device_node *node)
return of_reset_control_array_get(node, false, false, true);
}
static inline struct reset_control *
of_reset_control_array_get_exclusive_released(struct device_node *node)
{
return of_reset_control_array_get(node, false, false, false);
}
static inline struct reset_control *
of_reset_control_array_get_shared(struct device_node *node)
{
......
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