+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2016, NVIDIA CORPORATION.
- *
- * SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
#include <reset.h>
#include <reset-uclass.h>
-DECLARE_GLOBAL_DATA_PTR;
-
static inline struct reset_ops *reset_dev_ops(struct udevice *dev)
{
return (struct reset_ops *)dev->driver->ops;
debug("%s(dev=%p, index=%d, reset_ctl=%p)\n", __func__, dev, index,
reset_ctl);
+ reset_ctl->dev = NULL;
ret = dev_read_phandle_with_args(dev, "resets", "#reset-cells", 0,
index, &args);
return 0;
}
+int reset_get_bulk(struct udevice *dev, struct reset_ctl_bulk *bulk)
+{
+ int i, ret, err, count;
+
+ bulk->count = 0;
+
+ count = dev_count_phandle_with_args(dev, "resets", "#reset-cells");
+ if (count < 1)
+ return count;
+
+ bulk->resets = devm_kcalloc(dev, count, sizeof(struct reset_ctl),
+ GFP_KERNEL);
+ if (!bulk->resets)
+ return -ENOMEM;
+
+ for (i = 0; i < count; i++) {
+ ret = reset_get_by_index(dev, i, &bulk->resets[i]);
+ if (ret < 0)
+ goto bulk_get_err;
+
+ ++bulk->count;
+ }
+
+ return 0;
+
+bulk_get_err:
+ err = reset_release_all(bulk->resets, bulk->count);
+ if (err)
+ debug("%s: could release all resets for %p\n",
+ __func__, dev);
+
+ return ret;
+}
+
int reset_get_by_name(struct udevice *dev, const char *name,
struct reset_ctl *reset_ctl)
{
debug("%s(dev=%p, name=%s, reset_ctl=%p)\n", __func__, dev, name,
reset_ctl);
+ reset_ctl->dev = NULL;
index = dev_read_stringlist_search(dev, "reset-names", name);
if (index < 0) {
return reset_get_by_index(dev, index, reset_ctl);
}
+int reset_request(struct reset_ctl *reset_ctl)
+{
+ struct reset_ops *ops = reset_dev_ops(reset_ctl->dev);
+
+ debug("%s(reset_ctl=%p)\n", __func__, reset_ctl);
+
+ return ops->request(reset_ctl);
+}
+
int reset_free(struct reset_ctl *reset_ctl)
{
struct reset_ops *ops = reset_dev_ops(reset_ctl->dev);
return ops->rst_assert(reset_ctl);
}
+int reset_assert_bulk(struct reset_ctl_bulk *bulk)
+{
+ int i, ret;
+
+ for (i = 0; i < bulk->count; i++) {
+ ret = reset_assert(&bulk->resets[i]);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
int reset_deassert(struct reset_ctl *reset_ctl)
{
struct reset_ops *ops = reset_dev_ops(reset_ctl->dev);
return ops->rst_deassert(reset_ctl);
}
+int reset_deassert_bulk(struct reset_ctl_bulk *bulk)
+{
+ int i, ret;
+
+ for (i = 0; i < bulk->count; i++) {
+ ret = reset_deassert(&bulk->resets[i]);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+int reset_release_all(struct reset_ctl *reset_ctl, int count)
+{
+ int i, ret;
+
+ for (i = 0; i < count; i++) {
+ debug("%s(reset_ctl[%d]=%p)\n", __func__, i, &reset_ctl[i]);
+
+ /* check if reset has been previously requested */
+ if (!reset_ctl[i].dev)
+ continue;
+
+ ret = reset_assert(&reset_ctl[i]);
+ if (ret)
+ return ret;
+
+ ret = reset_free(&reset_ctl[i]);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
UCLASS_DRIVER(reset) = {
.id = UCLASS_RESET,
.name = "reset",