+// 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;
}
static int reset_of_xlate_default(struct reset_ctl *reset_ctl,
- struct fdtdec_phandle_args *args)
+ struct ofnode_phandle_args *args)
{
debug("%s(reset_ctl=%p)\n", __func__, reset_ctl);
return 0;
}
-int reset_get_by_index(struct udevice *dev, int index,
- struct reset_ctl *reset_ctl)
+static int reset_get_by_index_tail(int ret, ofnode node,
+ struct ofnode_phandle_args *args,
+ const char *list_name, int index,
+ struct reset_ctl *reset_ctl)
{
- struct fdtdec_phandle_args args;
- int ret;
struct udevice *dev_reset;
struct reset_ops *ops;
- debug("%s(dev=%p, index=%d, reset_ctl=%p)\n", __func__, dev, index,
- reset_ctl);
-
- ret = fdtdec_parse_phandle_with_args(gd->fdt_blob, dev_of_offset(dev),
- "resets", "#reset-cells", 0,
- index, &args);
- if (ret) {
- debug("%s: fdtdec_parse_phandle_with_args failed: %d\n",
- __func__, ret);
+ assert(reset_ctl);
+ reset_ctl->dev = NULL;
+ if (ret)
return ret;
- }
- ret = uclass_get_device_by_of_offset(UCLASS_RESET, args.node,
- &dev_reset);
+ ret = uclass_get_device_by_ofnode(UCLASS_RESET, args->node,
+ &dev_reset);
if (ret) {
- debug("%s: uclass_get_device_by_of_offset failed: %d\n",
+ debug("%s: uclass_get_device_by_ofnode() failed: %d\n",
__func__, ret);
+ debug("%s %d\n", ofnode_get_name(args->node), args->args[0]);
return ret;
}
ops = reset_dev_ops(dev_reset);
reset_ctl->dev = dev_reset;
if (ops->of_xlate)
- ret = ops->of_xlate(reset_ctl, &args);
+ ret = ops->of_xlate(reset_ctl, args);
else
- ret = reset_of_xlate_default(reset_ctl, &args);
+ ret = reset_of_xlate_default(reset_ctl, args);
if (ret) {
debug("of_xlate() failed: %d\n", ret);
return ret;
return 0;
}
+int reset_get_by_index(struct udevice *dev, int index,
+ struct reset_ctl *reset_ctl)
+{
+ struct ofnode_phandle_args args;
+ int ret;
+
+ ret = dev_read_phandle_with_args(dev, "resets", "#reset-cells", 0,
+ index, &args);
+
+ return reset_get_by_index_tail(ret, dev_ofnode(dev), &args, "resets",
+ index > 0, reset_ctl);
+}
+
+int reset_get_by_index_nodev(ofnode node, int index,
+ struct reset_ctl *reset_ctl)
+{
+ struct ofnode_phandle_args args;
+ int ret;
+
+ ret = ofnode_parse_phandle_with_args(node, "resets", "#reset-cells", 0,
+ index > 0, &args);
+
+ return reset_get_by_index_tail(ret, node, &args, "resets",
+ index > 0, reset_ctl);
+}
+
+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 = fdt_stringlist_search(gd->fdt_blob, dev_of_offset(dev),
- "reset-names", name);
+ index = dev_read_stringlist_search(dev, "reset-names", name);
if (index < 0) {
debug("fdt_stringlist_search() failed: %d\n", index);
return index;
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_status(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->rst_status(reset_ctl);
+}
+
+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",
projects / oweals / u-boot.git / blobdiff