+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2016, NVIDIA CORPORATION.
- *
- * SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
#include <dm.h>
#include <fdtdec.h>
+#include <log.h>
+#include <malloc.h>
#include <reset.h>
#include <reset-uclass.h>
-
-DECLARE_GLOBAL_DATA_PTR;
+#include <dm/devres.h>
+#include <dm/lists.h>
static inline struct reset_ops *reset_dev_ops(struct udevice *dev)
{
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 ofnode_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);
+ assert(reset_ctl);
reset_ctl->dev = NULL;
-
- ret = dev_read_phandle_with_args(dev, "resets", "#reset-cells", 0,
- index, &args);
- if (ret) {
- debug("%s: fdtdec_parse_phandle_with_args() failed: %d\n",
- __func__, ret);
+ if (ret)
return ret;
- }
- ret = uclass_get_device_by_ofnode(UCLASS_RESET, args.node,
+ ret = uclass_get_device_by_ofnode(UCLASS_RESET, args->node,
&dev_reset);
if (ret) {
debug("%s: uclass_get_device_by_ofnode() failed: %d\n",
__func__, ret);
- debug("%s %d\n", ofnode_get_name(args.node), args.args[0]);
+ 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_bulk(struct udevice *dev, struct reset_ctl_bulk *bulk)
+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);
+}
+
+static int __reset_get_bulk(struct udevice *dev, ofnode node,
+ 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)
- return 0;
+ count = ofnode_count_phandle_with_args(node, "resets", "#reset-cells",
+ 0);
+ if (count < 1)
+ return count;
bulk->resets = devm_kcalloc(dev, count, sizeof(struct reset_ctl),
GFP_KERNEL);
return -ENOMEM;
for (i = 0; i < count; i++) {
- ret = reset_get_by_index(dev, i, &bulk->resets[i]);
+ ret = reset_get_by_index_nodev(node, i, &bulk->resets[i]);
if (ret < 0)
goto bulk_get_err;
return ret;
}
+int reset_get_bulk(struct udevice *dev, struct reset_ctl_bulk *bulk)
+{
+ return __reset_get_bulk(dev, dev_ofnode(dev), bulk);
+}
+
int reset_get_by_name(struct udevice *dev, const char *name,
struct reset_ctl *reset_ctl)
{
debug("%s(reset_ctl=%p)\n", __func__, reset_ctl);
- return ops->free(reset_ctl);
+ return ops->rfree(reset_ctl);
}
int reset_assert(struct reset_ctl *reset_ctl)
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;
return 0;
}
+static void devm_reset_release(struct udevice *dev, void *res)
+{
+ reset_free(res);
+}
+
+struct reset_ctl *devm_reset_control_get_by_index(struct udevice *dev,
+ int index)
+{
+ int rc;
+ struct reset_ctl *reset_ctl;
+
+ reset_ctl = devres_alloc(devm_reset_release, sizeof(struct reset_ctl),
+ __GFP_ZERO);
+ if (unlikely(!reset_ctl))
+ return ERR_PTR(-ENOMEM);
+
+ rc = reset_get_by_index(dev, index, reset_ctl);
+ if (rc)
+ return ERR_PTR(rc);
+
+ devres_add(dev, reset_ctl);
+ return reset_ctl;
+}
+
+struct reset_ctl *devm_reset_control_get(struct udevice *dev, const char *id)
+{
+ int rc;
+ struct reset_ctl *reset_ctl;
+
+ reset_ctl = devres_alloc(devm_reset_release, sizeof(struct reset_ctl),
+ __GFP_ZERO);
+ if (unlikely(!reset_ctl))
+ return ERR_PTR(-ENOMEM);
+
+ rc = reset_get_by_name(dev, id, reset_ctl);
+ if (rc)
+ return ERR_PTR(rc);
+
+ devres_add(dev, reset_ctl);
+ return reset_ctl;
+}
+
+struct reset_ctl *devm_reset_control_get_optional(struct udevice *dev,
+ const char *id)
+{
+ struct reset_ctl *r = devm_reset_control_get(dev, id);
+
+ if (IS_ERR(r))
+ return NULL;
+
+ return r;
+}
+
+static void devm_reset_bulk_release(struct udevice *dev, void *res)
+{
+ struct reset_ctl_bulk *bulk = res;
+
+ reset_release_all(bulk->resets, bulk->count);
+}
+
+struct reset_ctl_bulk *devm_reset_bulk_get_by_node(struct udevice *dev,
+ ofnode node)
+{
+ int rc;
+ struct reset_ctl_bulk *bulk;
+
+ bulk = devres_alloc(devm_reset_bulk_release,
+ sizeof(struct reset_ctl_bulk),
+ __GFP_ZERO);
+ if (unlikely(!bulk))
+ return ERR_PTR(-ENOMEM);
+
+ rc = __reset_get_bulk(dev, node, bulk);
+ if (rc)
+ return ERR_PTR(rc);
+
+ devres_add(dev, bulk);
+ return bulk;
+}
+
+struct reset_ctl_bulk *devm_reset_bulk_get_optional_by_node(struct udevice *dev,
+ ofnode node)
+{
+ struct reset_ctl_bulk *bulk;
+
+ bulk = devm_reset_bulk_get_by_node(dev, node);
+
+ if (IS_ERR(bulk))
+ return NULL;
+
+ return bulk;
+}
+
+struct reset_ctl_bulk *devm_reset_bulk_get(struct udevice *dev)
+{
+ return devm_reset_bulk_get_by_node(dev, dev_ofnode(dev));
+}
+
+struct reset_ctl_bulk *devm_reset_bulk_get_optional(struct udevice *dev)
+{
+ return devm_reset_bulk_get_optional_by_node(dev, dev_ofnode(dev));
+}
+
UCLASS_DRIVER(reset) = {
.id = UCLASS_RESET,
.name = "reset",
projects / platform / kernel / u-boot.git / blobdiff