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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Device manager
- *
- * Copyright (c) 2013 Google, Inc
- *
- * (C) Copyright 2012
- * Pavel Herrmann <morpheus.ibis@gmail.com>
- */
- #include <common.h>
- #include <cpu_func.h>
- #include <log.h>
- #include <asm/io.h>
- #include <clk.h>
- #include <fdtdec.h>
- #include <fdt_support.h>
- #include <malloc.h>
- #include <asm/cache.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/uclass.h>
- #include <dm/uclass-internal.h>
- #include <dm/util.h>
- #include <linux/err.h>
- #include <linux/list.h>
- #include <power-domain.h>
- DECLARE_GLOBAL_DATA_PTR;
- static int device_bind_common(struct udevice *parent, const struct driver *drv,
- const char *name, void *platdata,
- ulong driver_data, ofnode node,
- uint of_platdata_size, struct udevice **devp)
- {
- struct udevice *dev;
- struct uclass *uc;
- int size, ret = 0;
- if (devp)
- *devp = NULL;
- if (!name)
- return -EINVAL;
- ret = uclass_get(drv->id, &uc);
- if (ret) {
- debug("Missing uclass for driver %s\n", drv->name);
- return ret;
- }
- dev = calloc(1, sizeof(struct udevice));
- if (!dev)
- return -ENOMEM;
- INIT_LIST_HEAD(&dev->sibling_node);
- INIT_LIST_HEAD(&dev->child_head);
- INIT_LIST_HEAD(&dev->uclass_node);
- #ifdef CONFIG_DEVRES
- INIT_LIST_HEAD(&dev->devres_head);
- #endif
- dev->platdata = platdata;
- dev->driver_data = driver_data;
- dev->name = name;
- dev->node = node;
- dev->parent = parent;
- dev->driver = drv;
- dev->uclass = uc;
- dev->seq = -1;
- dev->req_seq = -1;
- 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 (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);
- #if CONFIG_IS_ENABLED(OF_PRIOR_STAGE)
- if (dev->req_seq == -1)
- dev->req_seq =
- uclass_find_next_free_req_seq(drv->id);
- #endif
- } else {
- dev->req_seq = uclass_find_next_free_req_seq(drv->id);
- }
- }
- if (drv->platdata_auto_alloc_size) {
- bool alloc = !platdata;
- if (CONFIG_IS_ENABLED(OF_PLATDATA)) {
- if (of_platdata_size) {
- dev->flags |= DM_FLAG_OF_PLATDATA;
- if (of_platdata_size <
- drv->platdata_auto_alloc_size)
- alloc = true;
- }
- }
- if (alloc) {
- dev->flags |= DM_FLAG_ALLOC_PDATA;
- dev->platdata = calloc(1,
- drv->platdata_auto_alloc_size);
- if (!dev->platdata) {
- ret = -ENOMEM;
- goto fail_alloc1;
- }
- if (CONFIG_IS_ENABLED(OF_PLATDATA) && platdata) {
- memcpy(dev->platdata, platdata,
- of_platdata_size);
- }
- }
- }
- size = uc->uc_drv->per_device_platdata_auto_alloc_size;
- if (size) {
- dev->flags |= DM_FLAG_ALLOC_UCLASS_PDATA;
- dev->uclass_platdata = calloc(1, size);
- if (!dev->uclass_platdata) {
- ret = -ENOMEM;
- goto fail_alloc2;
- }
- }
- if (parent) {
- size = parent->driver->per_child_platdata_auto_alloc_size;
- if (!size) {
- size = parent->uclass->uc_drv->
- per_child_platdata_auto_alloc_size;
- }
- if (size) {
- dev->flags |= DM_FLAG_ALLOC_PARENT_PDATA;
- dev->parent_platdata = calloc(1, size);
- if (!dev->parent_platdata) {
- ret = -ENOMEM;
- goto fail_alloc3;
- }
- }
- /* put dev into parent's successor list */
- list_add_tail(&dev->sibling_node, &parent->child_head);
- }
- ret = uclass_bind_device(dev);
- if (ret)
- goto fail_uclass_bind;
- /* if we fail to bind we remove device from successors and free it */
- if (drv->bind) {
- ret = drv->bind(dev);
- if (ret)
- goto fail_bind;
- }
- if (parent && parent->driver->child_post_bind) {
- ret = parent->driver->child_post_bind(dev);
- if (ret)
- goto fail_child_post_bind;
- }
- if (uc->uc_drv->post_bind) {
- ret = uc->uc_drv->post_bind(dev);
- if (ret)
- goto fail_uclass_post_bind;
- }
- if (parent)
- pr_debug("Bound device %s to %s\n", dev->name, parent->name);
- if (devp)
- *devp = dev;
- dev->flags |= DM_FLAG_BOUND;
- return 0;
- fail_uclass_post_bind:
- /* There is no child unbind() method, so no clean-up required */
- fail_child_post_bind:
- if (CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)) {
- if (drv->unbind && drv->unbind(dev)) {
- dm_warn("unbind() method failed on dev '%s' on error path\n",
- dev->name);
- }
- }
- fail_bind:
- if (CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)) {
- if (uclass_unbind_device(dev)) {
- dm_warn("Failed to unbind dev '%s' on error path\n",
- dev->name);
- }
- }
- fail_uclass_bind:
- if (CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)) {
- list_del(&dev->sibling_node);
- if (dev->flags & DM_FLAG_ALLOC_PARENT_PDATA) {
- free(dev->parent_platdata);
- dev->parent_platdata = NULL;
- }
- }
- fail_alloc3:
- if (dev->flags & DM_FLAG_ALLOC_UCLASS_PDATA) {
- free(dev->uclass_platdata);
- dev->uclass_platdata = NULL;
- }
- fail_alloc2:
- if (dev->flags & DM_FLAG_ALLOC_PDATA) {
- free(dev->platdata);
- dev->platdata = NULL;
- }
- fail_alloc1:
- devres_release_all(dev);
- free(dev);
- return ret;
- }
- int device_bind_with_driver_data(struct udevice *parent,
- const struct driver *drv, const char *name,
- ulong driver_data, ofnode node,
- struct udevice **devp)
- {
- return device_bind_common(parent, drv, name, NULL, driver_data, node,
- 0, devp);
- }
- int device_bind(struct udevice *parent, const struct driver *drv,
- const char *name, void *platdata, int of_offset,
- struct udevice **devp)
- {
- return device_bind_common(parent, drv, name, platdata, 0,
- 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,
- struct driver_info *info, struct udevice **devp)
- {
- struct driver *drv;
- uint platdata_size = 0;
- int ret;
- drv = lists_driver_lookup_name(info->name);
- if (!drv)
- return -ENOENT;
- if (pre_reloc_only && !(drv->flags & DM_FLAG_PRE_RELOC))
- return -EPERM;
- #if CONFIG_IS_ENABLED(OF_PLATDATA)
- platdata_size = info->platdata_size;
- #endif
- ret = device_bind_common(parent, drv, info->name,
- (void *)info->platdata, 0, ofnode_null(),
- platdata_size, devp);
- if (ret)
- return ret;
- #if CONFIG_IS_ENABLED(OF_PLATDATA)
- info->dev = *devp;
- #endif
- return ret;
- }
- static void *alloc_priv(int size, uint flags)
- {
- 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);
- /*
- * Ensure that the zero bytes are flushed to memory.
- * This prevents problems if the driver uses this as
- * both an input and an output buffer:
- *
- * 1. Zeroes written to buffer (here) and sit in the
- * cache
- * 2. Driver issues a read command to DMA
- * 3. CPU runs out of cache space and evicts some cache
- * data in the buffer, writing zeroes to RAM from
- * the memset() above
- * 4. DMA completes
- * 5. Buffer now has some DMA data and some zeroes
- * 6. Data being read is now incorrect
- *
- * To prevent this, ensure that the cache is clean
- * within this range at the start. The driver can then
- * use normal flush-after-write, invalidate-before-read
- * procedures.
- *
- * TODO(sjg@chromium.org): Drop this microblaze
- * exception.
- */
- #ifndef CONFIG_MICROBLAZE
- flush_dcache_range((ulong)priv, (ulong)priv + size);
- #endif
- }
- } else {
- priv = calloc(1, size);
- }
- return priv;
- }
- int device_ofdata_to_platdata(struct udevice *dev)
- {
- const struct driver *drv;
- int size = 0;
- int ret;
- if (!dev)
- return -EINVAL;
- if (dev->flags & DM_FLAG_PLATDATA_VALID)
- return 0;
- /* Ensure all parents have ofdata */
- if (dev->parent) {
- ret = device_ofdata_to_platdata(dev->parent);
- if (ret)
- goto fail;
- /*
- * The device might have already been probed during
- * the call to device_probe() on its parent device
- * (e.g. PCI bridge devices). Test the flags again
- * so that we don't mess up the device.
- */
- if (dev->flags & DM_FLAG_PLATDATA_VALID)
- return 0;
- }
- drv = dev->driver;
- assert(drv);
- /* Allocate private data if requested and not reentered */
- if (drv->priv_auto_alloc_size && !dev->priv) {
- dev->priv = alloc_priv(drv->priv_auto_alloc_size, drv->flags);
- if (!dev->priv) {
- ret = -ENOMEM;
- goto fail;
- }
- }
- /* 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 = alloc_priv(size,
- dev->uclass->uc_drv->flags);
- if (!dev->uclass_priv) {
- ret = -ENOMEM;
- goto fail;
- }
- }
- /* Allocate parent data for this child */
- if (dev->parent) {
- size = dev->parent->driver->per_child_auto_alloc_size;
- if (!size) {
- size = dev->parent->uclass->uc_drv->
- per_child_auto_alloc_size;
- }
- if (size && !dev->parent_priv) {
- dev->parent_priv = alloc_priv(size, drv->flags);
- if (!dev->parent_priv) {
- ret = -ENOMEM;
- goto fail;
- }
- }
- }
- if (drv->ofdata_to_platdata &&
- (CONFIG_IS_ENABLED(OF_PLATDATA) || dev_has_of_node(dev))) {
- ret = drv->ofdata_to_platdata(dev);
- if (ret)
- goto fail;
- }
- dev->flags |= DM_FLAG_PLATDATA_VALID;
- return 0;
- fail:
- device_free(dev);
- return ret;
- }
- int device_probe(struct udevice *dev)
- {
- const struct driver *drv;
- int ret;
- int seq;
- if (!dev)
- return -EINVAL;
- if (dev->flags & DM_FLAG_ACTIVATED)
- return 0;
- drv = dev->driver;
- assert(drv);
- ret = device_ofdata_to_platdata(dev);
- if (ret)
- goto fail;
- /* Ensure all parents are probed */
- if (dev->parent) {
- ret = device_probe(dev->parent);
- if (ret)
- goto fail;
- /*
- * The device might have already been probed during
- * the call to device_probe() on its parent device
- * (e.g. PCI bridge devices). Test the flags again
- * so that we don't mess up the device.
- */
- if (dev->flags & DM_FLAG_ACTIVATED)
- return 0;
- }
- seq = uclass_resolve_seq(dev);
- if (seq < 0) {
- ret = seq;
- goto fail;
- }
- dev->seq = seq;
- dev->flags |= DM_FLAG_ACTIVATED;
- /*
- * Process pinctrl for everything except the root device, and
- * continue regardless of the result of pinctrl. Don't process pinctrl
- * settings for pinctrl devices since the device may not yet be
- * probed.
- */
- if (dev->parent && device_get_uclass_id(dev) != UCLASS_PINCTRL)
- pinctrl_select_state(dev, "default");
- if (CONFIG_IS_ENABLED(POWER_DOMAIN) && dev->parent &&
- (device_get_uclass_id(dev) != UCLASS_POWER_DOMAIN) &&
- !(drv->flags & DM_FLAG_DEFAULT_PD_CTRL_OFF)) {
- ret = dev_power_domain_on(dev);
- if (ret)
- goto fail;
- }
- ret = uclass_pre_probe_device(dev);
- if (ret)
- goto fail;
- if (dev->parent && dev->parent->driver->child_pre_probe) {
- ret = dev->parent->driver->child_pre_probe(dev);
- if (ret)
- goto fail;
- }
- /* Only handle devices that have a valid ofnode */
- if (dev_of_valid(dev)) {
- /*
- * Process 'assigned-{clocks/clock-parents/clock-rates}'
- * properties
- */
- ret = clk_set_defaults(dev, 0);
- if (ret)
- goto fail;
- }
- if (drv->probe) {
- ret = drv->probe(dev);
- if (ret)
- goto fail;
- }
- ret = uclass_post_probe_device(dev);
- if (ret)
- goto fail_uclass;
- if (dev->parent && device_get_uclass_id(dev) == UCLASS_PINCTRL)
- pinctrl_select_state(dev, "default");
- return 0;
- fail_uclass:
- if (device_remove(dev, DM_REMOVE_NORMAL)) {
- dm_warn("%s: Device '%s' failed to remove on error path\n",
- __func__, dev->name);
- }
- fail:
- dev->flags &= ~DM_FLAG_ACTIVATED;
- dev->seq = -1;
- device_free(dev);
- return ret;
- }
- void *dev_get_platdata(const struct udevice *dev)
- {
- if (!dev) {
- dm_warn("%s: null device\n", __func__);
- return NULL;
- }
- return dev->platdata;
- }
- void *dev_get_parent_platdata(const struct udevice *dev)
- {
- if (!dev) {
- dm_warn("%s: null device\n", __func__);
- return NULL;
- }
- return dev->parent_platdata;
- }
- void *dev_get_uclass_platdata(const struct udevice *dev)
- {
- if (!dev) {
- dm_warn("%s: null device\n", __func__);
- return NULL;
- }
- return dev->uclass_platdata;
- }
- void *dev_get_priv(const struct udevice *dev)
- {
- if (!dev) {
- dm_warn("%s: null device\n", __func__);
- return NULL;
- }
- return dev->priv;
- }
- void *dev_get_uclass_priv(const struct udevice *dev)
- {
- if (!dev) {
- dm_warn("%s: null device\n", __func__);
- return NULL;
- }
- return dev->uclass_priv;
- }
- void *dev_get_parent_priv(const struct udevice *dev)
- {
- if (!dev) {
- dm_warn("%s: null device\n", __func__);
- return NULL;
- }
- return dev->parent_priv;
- }
- static int device_get_device_tail(struct udevice *dev, int ret,
- struct udevice **devp)
- {
- if (ret)
- return ret;
- ret = device_probe(dev);
- if (ret)
- return ret;
- *devp = dev;
- return 0;
- }
- #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
- /**
- * 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;
- }
- #endif
- int device_get_child(const struct udevice *parent, int index,
- struct udevice **devp)
- {
- struct udevice *dev;
- list_for_each_entry(dev, &parent->child_head, sibling_node) {
- if (!index--)
- return device_get_device_tail(dev, 0, devp);
- }
- return -ENODEV;
- }
- int device_get_child_count(const struct udevice *parent)
- {
- struct udevice *dev;
- int count = 0;
- list_for_each_entry(dev, &parent->child_head, sibling_node)
- count++;
- return count;
- }
- int device_find_child_by_seq(const struct udevice *parent, int seq_or_req_seq,
- bool find_req_seq, struct udevice **devp)
- {
- struct udevice *dev;
- *devp = NULL;
- if (seq_or_req_seq == -1)
- return -ENODEV;
- list_for_each_entry(dev, &parent->child_head, sibling_node) {
- if ((find_req_seq ? dev->req_seq : dev->seq) ==
- seq_or_req_seq) {
- *devp = dev;
- return 0;
- }
- }
- return -ENODEV;
- }
- int device_get_child_by_seq(const struct udevice *parent, int seq,
- struct udevice **devp)
- {
- struct udevice *dev;
- int ret;
- *devp = NULL;
- ret = device_find_child_by_seq(parent, seq, false, &dev);
- if (ret == -ENODEV) {
- /*
- * We didn't find it in probed devices. See if there is one
- * that will request this seq if probed.
- */
- ret = device_find_child_by_seq(parent, seq, true, &dev);
- }
- return device_get_device_tail(dev, ret, devp);
- }
- int device_find_child_by_of_offset(const struct udevice *parent, int of_offset,
- struct udevice **devp)
- {
- struct udevice *dev;
- *devp = NULL;
- list_for_each_entry(dev, &parent->child_head, sibling_node) {
- if (dev_of_offset(dev) == of_offset) {
- *devp = dev;
- return 0;
- }
- }
- return -ENODEV;
- }
- int device_get_child_by_of_offset(const struct udevice *parent, int node,
- struct udevice **devp)
- {
- struct udevice *dev;
- int ret;
- *devp = NULL;
- ret = device_find_child_by_of_offset(parent, node, &dev);
- return device_get_device_tail(dev, ret, devp);
- }
- static struct udevice *_device_find_global_by_ofnode(struct udevice *parent,
- ofnode ofnode)
- {
- struct udevice *dev, *found;
- if (ofnode_equal(dev_ofnode(parent), ofnode))
- return parent;
- list_for_each_entry(dev, &parent->child_head, sibling_node) {
- found = _device_find_global_by_ofnode(dev, ofnode);
- if (found)
- return found;
- }
- return NULL;
- }
- 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_ofnode(gd->dm_root, ofnode);
- return device_get_device_tail(dev, dev ? 0 : -ENOENT, devp);
- }
- #if CONFIG_IS_ENABLED(OF_PLATDATA)
- int device_get_by_driver_info(const struct driver_info *info,
- struct udevice **devp)
- {
- struct udevice *dev;
- dev = info->dev;
- return device_get_device_tail(dev, dev ? 0 : -ENOENT, devp);
- }
- #endif
- int device_find_first_child(const struct udevice *parent, struct udevice **devp)
- {
- if (list_empty(&parent->child_head)) {
- *devp = NULL;
- } else {
- *devp = list_first_entry(&parent->child_head, struct udevice,
- sibling_node);
- }
- return 0;
- }
- int device_find_next_child(struct udevice **devp)
- {
- struct udevice *dev = *devp;
- struct udevice *parent = dev->parent;
- if (list_is_last(&dev->sibling_node, &parent->child_head)) {
- *devp = NULL;
- } else {
- *devp = list_entry(dev->sibling_node.next, struct udevice,
- sibling_node);
- }
- return 0;
- }
- int device_find_first_inactive_child(const 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(const 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(const 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;
- }
- int device_first_child_err(struct udevice *parent, struct udevice **devp)
- {
- struct udevice *dev;
- device_find_first_child(parent, &dev);
- if (!dev)
- return -ENODEV;
- return device_get_device_tail(dev, 0, devp);
- }
- int device_next_child_err(struct udevice **devp)
- {
- struct udevice *dev = *devp;
- device_find_next_child(&dev);
- if (!dev)
- return -ENODEV;
- return device_get_device_tail(dev, 0, devp);
- }
- int device_first_child_ofdata_err(struct udevice *parent, struct udevice **devp)
- {
- struct udevice *dev;
- int ret;
- device_find_first_child(parent, &dev);
- if (!dev)
- return -ENODEV;
- ret = device_ofdata_to_platdata(dev);
- if (ret)
- return ret;
- *devp = dev;
- return 0;
- }
- int device_next_child_ofdata_err(struct udevice **devp)
- {
- struct udevice *dev = *devp;
- int ret;
- device_find_next_child(&dev);
- if (!dev)
- return -ENODEV;
- ret = device_ofdata_to_platdata(dev);
- if (ret)
- return ret;
- *devp = dev;
- return 0;
- }
- struct udevice *dev_get_parent(const struct udevice *child)
- {
- return child->parent;
- }
- ulong dev_get_driver_data(const struct udevice *dev)
- {
- return dev->driver_data;
- }
- 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(const struct udevice *dev)
- {
- return dev->uclass->uc_drv->id;
- }
- const char *dev_get_uclass_name(const struct udevice *dev)
- {
- if (!dev)
- return NULL;
- return dev->uclass->uc_drv->name;
- }
- bool device_has_children(const struct udevice *dev)
- {
- return !list_empty(&dev->child_head);
- }
- bool device_has_active_children(const struct udevice *dev)
- {
- struct udevice *child;
- for (device_find_first_child(dev, &child);
- child;
- device_find_next_child(&child)) {
- if (device_active(child))
- return true;
- }
- return false;
- }
- bool device_is_last_sibling(const struct udevice *dev)
- {
- struct udevice *parent = dev->parent;
- if (!parent)
- return false;
- return list_is_last(&dev->sibling_node, &parent->child_head);
- }
- void device_set_name_alloced(struct udevice *dev)
- {
- dev->flags |= DM_FLAG_NAME_ALLOCED;
- }
- int device_set_name(struct udevice *dev, const char *name)
- {
- name = strdup(name);
- if (!name)
- return -ENOMEM;
- dev->name = name;
- device_set_name_alloced(dev);
- return 0;
- }
- #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
- bool device_is_compatible(const struct udevice *dev, const char *compat)
- {
- return ofnode_device_is_compatible(dev_ofnode(dev), compat);
- }
- bool of_machine_is_compatible(const char *compat)
- {
- const void *fdt = gd->fdt_blob;
- 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);
- }
- #endif
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