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linux/drivers/of/of_private.h
Linus Torvalds 3b9ea5b5ed Merge tag 'devicetree-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux 
Pull devicetree updates from Rob Herring:
 "DT core:

   - Fix ref counting errors in interrupt parsing code

   - Allow "nonposted-mmio" property per device and on non-Apple h/w

   - Use typed accessors in platform driver code

   - Fix mismatch between DT MAX_PHANDLE_ARGS and
     NR_FWNODE_REFERENCE_ARGS and increase the maximum number args

   - Rework of_resolve_phandles() to use __free() cleanup and fix ref
     count error

   - Use of_prop_cmp() in a few more places

   - Improve make_fit.py script error handling

  DT bindings:

   - Update DT property ordering rules for properties within groups
     (i.e. common suffix)

   - Update DT submitting-patches doc to cover sending .dts patches and
     SoC maintainer rules on being warning free against linux-next

   - Add ti,tps53681, ti,tps53681, Maxim max15301, max15303, and
     max20751 to trivial devices

   - Add Renesas RZ/V2H(P) and Allwinner H616 support to Arm Mali
     Bifrost GPU. Add Samsung exynos7870 support to Arm Mail Midgard.

   - Rework qcom,ebi2 and samsung,exynos4210-sram memory controller
     bindings to split child node properties. Fix the LAN9115 binding to
     use the child node schema so all properties are documented.

   - Convert nxp,lpc3220-mic and Altera ECC manager bindings to schema

   - Fix some issues with LVDS display panels causing validation
     warnings

   - Drop some obsolete parts of Xilinx bindings"

* tag 'devicetree-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (48 commits)
  scripts/make_fit: Print DT name before libfdt errors
  dt-bindings: edac: altera: socfpga: Convert to YAML
  dt-bindings: pps: gpio: Correct indentation and style in DTS example
  media: dt-bindings: mediatek,vcodec-encoder: Drop assigned-clock properties
  of: address: Allow to specify nonposted-mmio per-device
  of: address: Expand nonposted-mmio to non-Apple Silicon platforms
  docs: dt-bindings: Specify ordering for properties within groups
  dt-bindings: gpu: arm,mali-midgard: add exynos7870-mali compatible
  of: Move of_prop_val_eq() next to the single user
  of/platform: Use typed accessors rather than of_get_property()
  dt-bindings: trivial-devices: Add Maxim max15301, max15303, and max20751
  dt-bindings: fsi: ibm,p9-scom: Add "ibm,fsi2pib" compatible
  dt-bindings: memory-controllers: qcom,ebi2: Enforce child props
  dt-bindings: memory-controllers: samsung,exynos4210-srom: Enforce child props
  dt-bindings: display: mitsubishi,aa104xd12: Adjust allowed and required properties
  dt-bindings: display: mitsubishi,aa104xd12: Allow jeida-18 for data-mapping
  dt-bindings: interrupt-controller: Convert nxp,lpc3220-mic.txt to yaml format
  docs: process: maintainer-soc-clean-dts: linux-next is decisive
  docs: dt: submitting-patches: Document sending DTS patches
  of: Align macro MAX_PHANDLE_ARGS with NR_FWNODE_REFERENCE_ARGS
  ...
2025-03-29 11:23:16 -07:00

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/* SPDX-License-Identifier: GPL-2.0+ */
#ifndef _LINUX_OF_PRIVATE_H
#define _LINUX_OF_PRIVATE_H
/*
* Private symbols used by OF support code
*
* Paul Mackerras August 1996.
* Copyright (C) 1996-2005 Paul Mackerras.
*/
#define FDT_ALIGN_SIZE 8
#define MAX_RESERVED_REGIONS 64
/**
* struct alias_prop - Alias property in 'aliases' node
* @link: List node to link the structure in aliases_lookup list
* @alias: Alias property name
* @np: Pointer to device_node that the alias stands for
* @id: Index value from end of alias name
* @stem: Alias string without the index
*
* The structure represents one alias property of 'aliases' node as
* an entry in aliases_lookup list.
*/
struct alias_prop {
struct list_head link;
const char *alias;
struct device_node *np;
int id;
char stem[];
};
#if defined(CONFIG_SPARC)
#define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 2
#else
#define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1
#endif
#define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1
extern struct mutex of_mutex;
extern raw_spinlock_t devtree_lock;
extern struct list_head aliases_lookup;
extern struct kset *of_kset;
struct kunit;
extern void of_root_kunit_skip(struct kunit *test);
#if defined(CONFIG_OF_DYNAMIC)
extern int of_property_notify(int action, struct device_node *np,
struct property *prop, struct property *old_prop);
extern void of_node_release(struct kobject *kobj);
extern int __of_changeset_apply_entries(struct of_changeset *ocs,
int *ret_revert);
extern int __of_changeset_apply_notify(struct of_changeset *ocs);
extern int __of_changeset_revert_entries(struct of_changeset *ocs,
int *ret_apply);
extern int __of_changeset_revert_notify(struct of_changeset *ocs);
#else /* CONFIG_OF_DYNAMIC */
static inline int of_property_notify(int action, struct device_node *np,
struct property *prop, struct property *old_prop)
{
return 0;
}
#endif /* CONFIG_OF_DYNAMIC */
#if defined(CONFIG_OF_DYNAMIC) && defined(CONFIG_OF_ADDRESS)
void of_platform_register_reconfig_notifier(void);
#else
static inline void of_platform_register_reconfig_notifier(void) { }
#endif
#if defined(CONFIG_OF_KOBJ)
int of_node_is_attached(const struct device_node *node);
int __of_add_property_sysfs(struct device_node *np, struct property *pp);
void __of_remove_property_sysfs(struct device_node *np, const struct property *prop);
void __of_update_property_sysfs(struct device_node *np, struct property *newprop,
const struct property *oldprop);
int __of_attach_node_sysfs(struct device_node *np);
void __of_detach_node_sysfs(struct device_node *np);
#else
static inline int __of_add_property_sysfs(struct device_node *np, struct property *pp)
{
return 0;
}
static inline void __of_remove_property_sysfs(struct device_node *np, const struct property *prop) {}
static inline void __of_update_property_sysfs(struct device_node *np,
struct property *newprop, const struct property *oldprop) {}
static inline int __of_attach_node_sysfs(struct device_node *np)
{
return 0;
}
static inline void __of_detach_node_sysfs(struct device_node *np) {}
#endif
#if defined(CONFIG_OF_RESOLVE)
int of_resolve_phandles(struct device_node *tree);
#endif
void __of_phandle_cache_inv_entry(phandle handle);
#if defined(CONFIG_OF_OVERLAY)
void of_overlay_mutex_lock(void);
void of_overlay_mutex_unlock(void);
#else
static inline void of_overlay_mutex_lock(void) {};
static inline void of_overlay_mutex_unlock(void) {};
#endif
#if defined(CONFIG_OF_UNITTEST) && defined(CONFIG_OF_OVERLAY)
extern void __init unittest_unflatten_overlay_base(void);
#else
static inline void unittest_unflatten_overlay_base(void) {};
#endif
extern void *__unflatten_device_tree(const void *blob,
struct device_node *dad,
struct device_node **mynodes,
void *(*dt_alloc)(u64 size, u64 align),
bool detached);
void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align));
/**
* General utilities for working with live trees.
*
* All functions with two leading underscores operate
* without taking node references, so you either have to
* own the devtree lock or work on detached trees only.
*/
struct property *__of_prop_dup(const struct property *prop, gfp_t allocflags);
void __of_prop_free(struct property *prop);
struct device_node *__of_node_dup(const struct device_node *np,
const char *full_name);
struct device_node *__of_find_node_by_path(const struct device_node *parent,
const char *path);
struct device_node *__of_find_node_by_full_path(struct device_node *node,
const char *path);
extern const void *__of_get_property(const struct device_node *np,
const char *name, int *lenp);
extern int __of_add_property(struct device_node *np, struct property *prop);
extern int __of_remove_property(struct device_node *np, struct property *prop);
extern int __of_update_property(struct device_node *np,
struct property *newprop, struct property **oldprop);
extern void __of_detach_node(struct device_node *np);
extern void __of_sysfs_remove_bin_file(struct device_node *np,
const struct property *prop);
/* illegal phandle value (set when unresolved) */
#define OF_PHANDLE_ILLEGAL 0xdeadbeef
/* iterators for transactions, used for overlays */
/* forward iterator */
#define for_each_transaction_entry(_oft, _te) \
list_for_each_entry(_te, &(_oft)->te_list, node)
/* reverse iterator */
#define for_each_transaction_entry_reverse(_oft, _te) \
list_for_each_entry_reverse(_te, &(_oft)->te_list, node)
extern int of_bus_n_addr_cells(struct device_node *np);
extern int of_bus_n_size_cells(struct device_node *np);
const __be32 *of_irq_parse_imap_parent(const __be32 *imap, int len,
struct of_phandle_args *out_irq);
struct bus_dma_region;
#if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_HAS_DMA)
int of_dma_get_range(struct device_node *np,
const struct bus_dma_region **map);
struct device_node *__of_get_dma_parent(const struct device_node *np);
#else
static inline int of_dma_get_range(struct device_node *np,
const struct bus_dma_region **map)
{
return -ENODEV;
}
static inline struct device_node *__of_get_dma_parent(const struct device_node *np)
{
return of_get_parent(np);
}
#endif
int fdt_scan_reserved_mem(void);
void __init fdt_scan_reserved_mem_reg_nodes(void);
bool of_fdt_device_is_available(const void *blob, unsigned long node);
/* Max address size we deal with */
#define OF_MAX_ADDR_CELLS 4
#define OF_CHECK_ADDR_COUNT(na) ((na) > 0 && (na) <= OF_MAX_ADDR_CELLS)
#define OF_CHECK_COUNTS(na, ns) (OF_CHECK_ADDR_COUNT(na) && (ns) > 0)
/* Debug utility */
#ifdef DEBUG
static void __maybe_unused of_dump_addr(const char *s, const __be32 *addr, int na)
{
pr_debug("%s", s);
while (na--)
pr_cont(" %08x", be32_to_cpu(*(addr++)));
pr_cont("\n");
}
#else
static void __maybe_unused of_dump_addr(const char *s, const __be32 *addr, int na) { }
#endif
static inline bool is_pseudo_property(const char *prop_name)
{
return !of_prop_cmp(prop_name, "name") ||
!of_prop_cmp(prop_name, "phandle") ||
!of_prop_cmp(prop_name, "linux,phandle");
}
#if IS_ENABLED(CONFIG_KUNIT)
int __of_address_resource_bounds(struct resource *r, u64 start, u64 size);
#endif
#endif /* _LINUX_OF_PRIVATE_H */
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