diff options
Diffstat (limited to 'drivers/reset/core.c')
-rw-r--r-- | drivers/reset/core.c | 48 |
1 files changed, 46 insertions, 2 deletions
diff --git a/drivers/reset/core.c b/drivers/reset/core.c index 682d61812852..22f67fc77ae5 100644 --- a/drivers/reset/core.c +++ b/drivers/reset/core.c @@ -1236,23 +1236,46 @@ static void devm_reset_control_release(struct device *dev, void *res) reset_control_put(*(struct reset_control **)res); } +static void devm_reset_control_release_deasserted(struct device *dev, void *res) +{ + struct reset_control *rstc = *(struct reset_control **)res; + + reset_control_assert(rstc); + reset_control_put(rstc); +} + struct reset_control * __devm_reset_control_get(struct device *dev, const char *id, int index, enum reset_control_flags flags) { struct reset_control **ptr, *rstc; + bool deasserted = flags & RESET_CONTROL_FLAGS_BIT_DEASSERTED; - ptr = devres_alloc(devm_reset_control_release, sizeof(*ptr), + ptr = devres_alloc(deasserted ? devm_reset_control_release_deasserted : + devm_reset_control_release, sizeof(*ptr), GFP_KERNEL); if (!ptr) return ERR_PTR(-ENOMEM); + flags &= ~RESET_CONTROL_FLAGS_BIT_DEASSERTED; + rstc = __reset_control_get(dev, id, index, flags); if (IS_ERR_OR_NULL(rstc)) { devres_free(ptr); return rstc; } + if (deasserted) { + int ret; + + ret = reset_control_deassert(rstc); + if (ret) { + reset_control_put(rstc); + devres_free(ptr); + return ERR_PTR(ret); + } + } + *ptr = rstc; devres_add(dev, ptr); @@ -1272,24 +1295,45 @@ static void devm_reset_control_bulk_release(struct device *dev, void *res) reset_control_bulk_put(devres->num_rstcs, devres->rstcs); } +static void devm_reset_control_bulk_release_deasserted(struct device *dev, void *res) +{ + struct reset_control_bulk_devres *devres = res; + + reset_control_bulk_assert(devres->num_rstcs, devres->rstcs); + reset_control_bulk_put(devres->num_rstcs, devres->rstcs); +} + int __devm_reset_control_bulk_get(struct device *dev, int num_rstcs, struct reset_control_bulk_data *rstcs, enum reset_control_flags flags) { struct reset_control_bulk_devres *ptr; + bool deasserted = flags & RESET_CONTROL_FLAGS_BIT_DEASSERTED; int ret; - ptr = devres_alloc(devm_reset_control_bulk_release, sizeof(*ptr), + ptr = devres_alloc(deasserted ? devm_reset_control_bulk_release_deasserted : + devm_reset_control_bulk_release, sizeof(*ptr), GFP_KERNEL); if (!ptr) return -ENOMEM; + flags &= ~RESET_CONTROL_FLAGS_BIT_DEASSERTED; + ret = __reset_control_bulk_get(dev, num_rstcs, rstcs, flags); if (ret < 0) { devres_free(ptr); return ret; } + if (deasserted) { + ret = reset_control_bulk_deassert(num_rstcs, rstcs); + if (ret) { + reset_control_bulk_put(num_rstcs, rstcs); + devres_free(ptr); + return ret; + } + } + ptr->num_rstcs = num_rstcs; ptr->rstcs = rstcs; devres_add(dev, ptr); |