+// SPDX-License-Identifier: GPL-2.0+
/*
* Device manager
*
*
* (C) Copyright 2012
* Pavel Herrmann <morpheus.ibis@gmail.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
+#include <clk.h>
#include <fdtdec.h>
#include <fdt_support.h>
#include <malloc.h>
#include <dm/device.h>
#include <dm/device-internal.h>
#include <dm/lists.h>
+#include <dm/of_access.h>
#include <dm/pinctrl.h>
#include <dm/platdata.h>
#include <dm/read.h>
#include <dm/util.h>
#include <linux/err.h>
#include <linux/list.h>
+#include <power-domain.h>
DECLARE_GLOBAL_DATA_PTR;
dev->seq = -1;
dev->req_seq = -1;
- if (CONFIG_IS_ENABLED(OF_CONTROL) && CONFIG_IS_ENABLED(DM_SEQ_ALIAS)) {
+ if (CONFIG_IS_ENABLED(DM_SEQ_ALIAS) &&
+ (uc->uc_drv->flags & DM_UC_FLAG_SEQ_ALIAS)) {
/*
* Some devices, such as a SPI bus, I2C bus and serial ports
* are numbered using aliases.
* This is just a 'requested' sequence, and will be
* resolved (and ->seq updated) when the device is probed.
*/
- if (uc->uc_drv->flags & DM_UC_FLAG_SEQ_ALIAS) {
- if (uc->uc_drv->name && ofnode_valid(node)) {
+ if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) {
+ if (uc->uc_drv->name && ofnode_valid(node))
dev_read_alias_seq(dev, &dev->req_seq);
- }
+ } else {
+ dev->req_seq = uclass_find_next_free_req_seq(drv->id);
}
}
offset_to_ofnode(of_offset), 0, devp);
}
+int device_bind_ofnode(struct udevice *parent, const struct driver *drv,
+ const char *name, void *platdata, ofnode node,
+ struct udevice **devp)
+{
+ return device_bind_common(parent, drv, name, platdata, 0, node, 0,
+ devp);
+}
+
int device_bind_by_name(struct udevice *parent, bool pre_reloc_only,
const struct driver_info *info, struct udevice **devp)
{
void *priv;
if (flags & DM_FLAG_ALLOC_PRIV_DMA) {
+ size = ROUND(size, ARCH_DMA_MINALIGN);
priv = memalign(ARCH_DMA_MINALIGN, size);
if (priv) {
memset(priv, '\0', size);
int device_probe(struct udevice *dev)
{
+ struct power_domain pd;
const struct driver *drv;
int size = 0;
int ret;
/* Allocate private data if requested and not reentered */
size = dev->uclass->uc_drv->per_device_auto_alloc_size;
if (size && !dev->uclass_priv) {
- dev->uclass_priv = calloc(1, size);
+ dev->uclass_priv = alloc_priv(size,
+ dev->uclass->uc_drv->flags);
if (!dev->uclass_priv) {
ret = -ENOMEM;
goto fail;
if (dev->parent && device_get_uclass_id(dev) != UCLASS_PINCTRL)
pinctrl_select_state(dev, "default");
+ if (dev->parent && device_get_uclass_id(dev) != UCLASS_POWER_DOMAIN) {
+ if (!power_domain_get(dev, &pd))
+ power_domain_on(&pd);
+ }
+
ret = uclass_pre_probe_device(dev);
if (ret)
goto fail;
goto fail;
}
+ /* Process 'assigned-{clocks/clock-parents/clock-rates}' properties */
+ ret = clk_set_defaults(dev);
+ if (ret)
+ goto fail;
+
if (drv->probe) {
ret = drv->probe(dev);
if (ret) {
return ret;
}
-void *dev_get_platdata(struct udevice *dev)
+void *dev_get_platdata(const struct udevice *dev)
{
if (!dev) {
dm_warn("%s: null device\n", __func__);
return dev->platdata;
}
-void *dev_get_parent_platdata(struct udevice *dev)
+void *dev_get_parent_platdata(const struct udevice *dev)
{
if (!dev) {
dm_warn("%s: null device\n", __func__);
return dev->parent_platdata;
}
-void *dev_get_uclass_platdata(struct udevice *dev)
+void *dev_get_uclass_platdata(const struct udevice *dev)
{
if (!dev) {
dm_warn("%s: null device\n", __func__);
return dev->uclass_platdata;
}
-void *dev_get_priv(struct udevice *dev)
+void *dev_get_priv(const struct udevice *dev)
{
if (!dev) {
dm_warn("%s: null device\n", __func__);
return dev->priv;
}
-void *dev_get_uclass_priv(struct udevice *dev)
+void *dev_get_uclass_priv(const struct udevice *dev)
{
if (!dev) {
dm_warn("%s: null device\n", __func__);
return dev->uclass_priv;
}
-void *dev_get_parent_priv(struct udevice *dev)
+void *dev_get_parent_priv(const struct udevice *dev)
{
if (!dev) {
dm_warn("%s: null device\n", __func__);
return 0;
}
+/**
+ * device_find_by_ofnode() - Return device associated with given ofnode
+ *
+ * The returned device is *not* activated.
+ *
+ * @node: The ofnode for which a associated device should be looked up
+ * @devp: Pointer to structure to hold the found device
+ * Return: 0 if OK, -ve on error
+ */
+static int device_find_by_ofnode(ofnode node, struct udevice **devp)
+{
+ struct uclass *uc;
+ struct udevice *dev;
+ int ret;
+
+ list_for_each_entry(uc, &gd->uclass_root, sibling_node) {
+ ret = uclass_find_device_by_ofnode(uc->uc_drv->id, node,
+ &dev);
+ if (!ret || dev) {
+ *devp = dev;
+ return 0;
+ }
+ }
+
+ return -ENODEV;
+}
+
int device_get_child(struct udevice *parent, int index, struct udevice **devp)
{
struct udevice *dev;
return device_get_device_tail(dev, ret, devp);
}
-static struct udevice *_device_find_global_by_of_offset(struct udevice *parent,
- int of_offset)
+static struct udevice *_device_find_global_by_ofnode(struct udevice *parent,
+ ofnode ofnode)
{
struct udevice *dev, *found;
- if (dev_of_offset(parent) == of_offset)
+ if (ofnode_equal(dev_ofnode(parent), ofnode))
return parent;
list_for_each_entry(dev, &parent->child_head, sibling_node) {
- found = _device_find_global_by_of_offset(dev, of_offset);
+ found = _device_find_global_by_ofnode(dev, ofnode);
if (found)
return found;
}
return NULL;
}
-int device_get_global_by_of_offset(int of_offset, struct udevice **devp)
+int device_find_global_by_ofnode(ofnode ofnode, struct udevice **devp)
+{
+ *devp = _device_find_global_by_ofnode(gd->dm_root, ofnode);
+
+ return *devp ? 0 : -ENOENT;
+}
+
+int device_get_global_by_ofnode(ofnode ofnode, struct udevice **devp)
{
struct udevice *dev;
- dev = _device_find_global_by_of_offset(gd->dm_root, of_offset);
+ dev = _device_find_global_by_ofnode(gd->dm_root, ofnode);
return device_get_device_tail(dev, dev ? 0 : -ENOENT, devp);
}
return 0;
}
-struct udevice *dev_get_parent(struct udevice *child)
+int device_find_first_inactive_child(struct udevice *parent,
+ enum uclass_id uclass_id,
+ struct udevice **devp)
+{
+ struct udevice *dev;
+
+ *devp = NULL;
+ list_for_each_entry(dev, &parent->child_head, sibling_node) {
+ if (!device_active(dev) &&
+ device_get_uclass_id(dev) == uclass_id) {
+ *devp = dev;
+ return 0;
+ }
+ }
+
+ return -ENODEV;
+}
+
+int device_find_first_child_by_uclass(struct udevice *parent,
+ enum uclass_id uclass_id,
+ struct udevice **devp)
+{
+ struct udevice *dev;
+
+ *devp = NULL;
+ list_for_each_entry(dev, &parent->child_head, sibling_node) {
+ if (device_get_uclass_id(dev) == uclass_id) {
+ *devp = dev;
+ return 0;
+ }
+ }
+
+ return -ENODEV;
+}
+
+int device_find_child_by_name(struct udevice *parent, const char *name,
+ struct udevice **devp)
+{
+ struct udevice *dev;
+
+ *devp = NULL;
+
+ list_for_each_entry(dev, &parent->child_head, sibling_node) {
+ if (!strcmp(dev->name, name)) {
+ *devp = dev;
+ return 0;
+ }
+ }
+
+ return -ENODEV;
+}
+
+struct udevice *dev_get_parent(const struct udevice *child)
{
return child->parent;
}
-ulong dev_get_driver_data(struct udevice *dev)
+ulong dev_get_driver_data(const struct udevice *dev)
{
return dev->driver_data;
}
-const void *dev_get_driver_ops(struct udevice *dev)
+const void *dev_get_driver_ops(const struct udevice *dev)
{
if (!dev || !dev->driver->ops)
return NULL;
return dev->driver->ops;
}
-enum uclass_id device_get_uclass_id(struct udevice *dev)
+enum uclass_id device_get_uclass_id(const struct udevice *dev)
{
return dev->uclass->uc_drv->id;
}
-const char *dev_get_uclass_name(struct udevice *dev)
+const char *dev_get_uclass_name(const struct udevice *dev)
{
if (!dev)
return NULL;
return dev->uclass->uc_drv->name;
}
-bool device_has_children(struct udevice *dev)
+bool device_has_children(const struct udevice *dev)
{
return !list_empty(&dev->child_head);
}
bool device_is_compatible(struct udevice *dev, const char *compat)
{
- const void *fdt = gd->fdt_blob;
-
- return !fdt_node_check_compatible(fdt, dev_of_offset(dev), compat);
+ return ofnode_device_is_compatible(dev_ofnode(dev), compat);
}
bool of_machine_is_compatible(const char *compat)
return !fdt_node_check_compatible(fdt, 0, compat);
}
+
+int dev_disable_by_path(const char *path)
+{
+ struct uclass *uc;
+ ofnode node = ofnode_path(path);
+ struct udevice *dev;
+ int ret = 1;
+
+ if (!of_live_active())
+ return -ENOSYS;
+
+ list_for_each_entry(uc, &gd->uclass_root, sibling_node) {
+ ret = uclass_find_device_by_ofnode(uc->uc_drv->id, node, &dev);
+ if (!ret)
+ break;
+ }
+
+ if (ret)
+ return ret;
+
+ ret = device_remove(dev, DM_REMOVE_NORMAL);
+ if (ret)
+ return ret;
+
+ ret = device_unbind(dev);
+ if (ret)
+ return ret;
+
+ return ofnode_set_enabled(node, false);
+}
+
+int dev_enable_by_path(const char *path)
+{
+ ofnode node = ofnode_path(path);
+ ofnode pnode = ofnode_get_parent(node);
+ struct udevice *parent;
+ int ret = 1;
+
+ if (!of_live_active())
+ return -ENOSYS;
+
+ ret = device_find_by_ofnode(pnode, &parent);
+ if (ret)
+ return ret;
+
+ ret = ofnode_set_enabled(node, true);
+ if (ret)
+ return ret;
+
+ return lists_bind_fdt(parent, node, NULL, false);
+}
projects / oweals / u-boot.git / blobdiff