2 * Copyright (c) 2013 Google, Inc
5 * Pavel Herrmann <morpheus.ibis@gmail.com>
6 * Marek Vasut <marex@denx.de>
8 * SPDX-License-Identifier: GPL-2.0+
14 #include <dm/uclass-id.h>
16 #include <linker_lists.h>
17 #include <linux/compat.h>
18 #include <linux/kernel.h>
19 #include <linux/list.h>
23 /* Driver is active (probed). Cleared when it is removed */
24 #define DM_FLAG_ACTIVATED (1 << 0)
26 /* DM is responsible for allocating and freeing platdata */
27 #define DM_FLAG_ALLOC_PDATA (1 << 1)
29 /* DM should init this device prior to relocation */
30 #define DM_FLAG_PRE_RELOC (1 << 2)
32 /* DM is responsible for allocating and freeing parent_platdata */
33 #define DM_FLAG_ALLOC_PARENT_PDATA (1 << 3)
35 /* DM is responsible for allocating and freeing uclass_platdata */
36 #define DM_FLAG_ALLOC_UCLASS_PDATA (1 << 4)
38 /* Allocate driver private data on a DMA boundary */
39 #define DM_FLAG_ALLOC_PRIV_DMA (1 << 5)
42 #define DM_FLAG_BOUND (1 << 6)
44 /* Device name is allocated and should be freed on unbind() */
45 #define DM_FLAG_NAME_ALLOCED (1 << 7)
47 #define DM_FLAG_OF_PLATDATA (1 << 8)
50 * struct udevice - An instance of a driver
52 * This holds information about a device, which is a driver bound to a
53 * particular port or peripheral (essentially a driver instance).
55 * A device will come into existence through a 'bind' call, either due to
56 * a U_BOOT_DEVICE() macro (in which case platdata is non-NULL) or a node
57 * in the device tree (in which case of_offset is >= 0). In the latter case
58 * we translate the device tree information into platdata in a function
59 * implemented by the driver ofdata_to_platdata method (called just before the
60 * probe method if the device has a device tree node.
62 * All three of platdata, priv and uclass_priv can be allocated by the
63 * driver, or you can use the auto_alloc_size members of struct driver and
64 * struct uclass_driver to have driver model do this automatically.
66 * @driver: The driver used by this device
67 * @name: Name of device, typically the FDT node name
68 * @platdata: Configuration data for this device
69 * @parent_platdata: The parent bus's configuration data for this device
70 * @uclass_platdata: The uclass's configuration data for this device
71 * @of_offset: Device tree node offset for this device (- for none)
72 * @driver_data: Driver data word for the entry that matched this device with
74 * @parent: Parent of this device, or NULL for the top level device
75 * @priv: Private data for this device
76 * @uclass: Pointer to uclass for this device
77 * @uclass_priv: The uclass's private data for this device
78 * @parent_priv: The parent's private data for this device
79 * @uclass_node: Used by uclass to link its devices
80 * @child_head: List of children of this device
81 * @sibling_node: Next device in list of all devices
82 * @flags: Flags for this device DM_FLAG_...
83 * @req_seq: Requested sequence number for this device (-1 = any)
84 * @seq: Allocated sequence number for this device (-1 = none). This is set up
85 * when the device is probed and will be unique within the device's uclass.
86 * @devres_head: List of memory allocations associated with this device.
87 * When CONFIG_DEVRES is enabled, devm_kmalloc() and friends will
88 * add to this list. Memory so-allocated will be freed
89 * automatically when the device is removed / unbound
92 const struct driver *driver;
95 void *parent_platdata;
96 void *uclass_platdata;
99 struct udevice *parent;
101 struct uclass *uclass;
104 struct list_head uclass_node;
105 struct list_head child_head;
106 struct list_head sibling_node;
111 struct list_head devres_head;
115 /* Maximum sequence number supported */
116 #define DM_MAX_SEQ 999
118 /* Returns the operations for a device */
119 #define device_get_ops(dev) (dev->driver->ops)
121 /* Returns non-zero if the device is active (probed and not removed) */
122 #define device_active(dev) ((dev)->flags & DM_FLAG_ACTIVATED)
124 static inline int dev_of_offset(const struct udevice *dev)
126 return dev->of_offset;
129 static inline void dev_set_of_offset(struct udevice *dev, int of_offset)
131 dev->of_offset = of_offset;
135 * struct udevice_id - Lists the compatible strings supported by a driver
136 * @compatible: Compatible string
137 * @data: Data for this compatible string
140 const char *compatible;
144 #if CONFIG_IS_ENABLED(OF_CONTROL)
145 #define of_match_ptr(_ptr) (_ptr)
147 #define of_match_ptr(_ptr) NULL
148 #endif /* CONFIG_IS_ENABLED(OF_CONTROL) */
151 * struct driver - A driver for a feature or peripheral
153 * This holds methods for setting up a new device, and also removing it.
154 * The device needs information to set itself up - this is provided either
155 * by platdata or a device tree node (which we find by looking up
156 * matching compatible strings with of_match).
158 * Drivers all belong to a uclass, representing a class of devices of the
159 * same type. Common elements of the drivers can be implemented in the uclass,
160 * or the uclass can provide a consistent interface to the drivers within
164 * @id: Identiies the uclass we belong to
165 * @of_match: List of compatible strings to match, and any identifying data
167 * @bind: Called to bind a device to its driver
168 * @probe: Called to probe a device, i.e. activate it
169 * @remove: Called to remove a device, i.e. de-activate it
170 * @unbind: Called to unbind a device from its driver
171 * @ofdata_to_platdata: Called before probe to decode device tree data
172 * @child_post_bind: Called after a new child has been bound
173 * @child_pre_probe: Called before a child device is probed. The device has
174 * memory allocated but it has not yet been probed.
175 * @child_post_remove: Called after a child device is removed. The device
176 * has memory allocated but its device_remove() method has been called.
177 * @priv_auto_alloc_size: If non-zero this is the size of the private data
178 * to be allocated in the device's ->priv pointer. If zero, then the driver
179 * is responsible for allocating any data required.
180 * @platdata_auto_alloc_size: If non-zero this is the size of the
181 * platform data to be allocated in the device's ->platdata pointer.
182 * This is typically only useful for device-tree-aware drivers (those with
183 * an of_match), since drivers which use platdata will have the data
184 * provided in the U_BOOT_DEVICE() instantiation.
185 * @per_child_auto_alloc_size: Each device can hold private data owned by
186 * its parent. If required this will be automatically allocated if this
188 * @per_child_platdata_auto_alloc_size: A bus likes to store information about
189 * its children. If non-zero this is the size of this data, to be allocated
190 * in the child's parent_platdata pointer.
191 * @ops: Driver-specific operations. This is typically a list of function
192 * pointers defined by the driver, to implement driver functions required by
194 * @flags: driver flags - see DM_FLAGS_...
199 const struct udevice_id *of_match;
200 int (*bind)(struct udevice *dev);
201 int (*probe)(struct udevice *dev);
202 int (*remove)(struct udevice *dev);
203 int (*unbind)(struct udevice *dev);
204 int (*ofdata_to_platdata)(struct udevice *dev);
205 int (*child_post_bind)(struct udevice *dev);
206 int (*child_pre_probe)(struct udevice *dev);
207 int (*child_post_remove)(struct udevice *dev);
208 int priv_auto_alloc_size;
209 int platdata_auto_alloc_size;
210 int per_child_auto_alloc_size;
211 int per_child_platdata_auto_alloc_size;
212 const void *ops; /* driver-specific operations */
216 /* Declare a new U-Boot driver */
217 #define U_BOOT_DRIVER(__name) \
218 ll_entry_declare(struct driver, __name, driver)
220 /* Get a pointer to a given driver */
221 #define DM_GET_DRIVER(__name) \
222 ll_entry_get(struct driver, __name, driver)
225 * dev_get_platdata() - Get the platform data for a device
227 * This checks that dev is not NULL, but no other checks for now
229 * @dev Device to check
230 * @return platform data, or NULL if none
232 void *dev_get_platdata(struct udevice *dev);
235 * dev_get_parent_platdata() - Get the parent platform data for a device
237 * This checks that dev is not NULL, but no other checks for now
239 * @dev Device to check
240 * @return parent's platform data, or NULL if none
242 void *dev_get_parent_platdata(struct udevice *dev);
245 * dev_get_uclass_platdata() - Get the uclass platform data for a device
247 * This checks that dev is not NULL, but no other checks for now
249 * @dev Device to check
250 * @return uclass's platform data, or NULL if none
252 void *dev_get_uclass_platdata(struct udevice *dev);
255 * dev_get_priv() - Get the private data for a device
257 * This checks that dev is not NULL, but no other checks for now
259 * @dev Device to check
260 * @return private data, or NULL if none
262 void *dev_get_priv(struct udevice *dev);
265 * dev_get_parent_priv() - Get the parent private data for a device
267 * The parent private data is data stored in the device but owned by the
268 * parent. For example, a USB device may have parent data which contains
269 * information about how to talk to the device over USB.
271 * This checks that dev is not NULL, but no other checks for now
273 * @dev Device to check
274 * @return parent data, or NULL if none
276 void *dev_get_parent_priv(struct udevice *dev);
279 * dev_get_uclass_priv() - Get the private uclass data for a device
281 * This checks that dev is not NULL, but no other checks for now
283 * @dev Device to check
284 * @return private uclass data for this device, or NULL if none
286 void *dev_get_uclass_priv(struct udevice *dev);
289 * struct dev_get_parent() - Get the parent of a device
291 * @child: Child to check
292 * @return parent of child, or NULL if this is the root device
294 struct udevice *dev_get_parent(struct udevice *child);
297 * dev_get_driver_data() - get the driver data used to bind a device
299 * When a device is bound using a device tree node, it matches a
300 * particular compatible string in struct udevice_id. This function
301 * returns the associated data value for that compatible string. This is
302 * the 'data' field in struct udevice_id.
304 * As an example, consider this structure:
305 * static const struct udevice_id tegra_i2c_ids[] = {
306 * { .compatible = "nvidia,tegra114-i2c", .data = TYPE_114 },
307 * { .compatible = "nvidia,tegra20-i2c", .data = TYPE_STD },
308 * { .compatible = "nvidia,tegra20-i2c-dvc", .data = TYPE_DVC },
312 * When driver model finds a driver for this it will store the 'data' value
313 * corresponding to the compatible string it matches. This function returns
314 * that value. This allows the driver to handle several variants of a device.
316 * For USB devices, this is the driver_info field in struct usb_device_id.
318 * @dev: Device to check
319 * @return driver data (0 if none is provided)
321 ulong dev_get_driver_data(struct udevice *dev);
324 * dev_get_driver_ops() - get the device's driver's operations
326 * This checks that dev is not NULL, and returns the pointer to device's
327 * driver's operations.
329 * @dev: Device to check
330 * @return void pointer to driver's operations or NULL for NULL-dev or NULL-ops
332 const void *dev_get_driver_ops(struct udevice *dev);
335 * device_get_uclass_id() - return the uclass ID of a device
337 * @dev: Device to check
338 * @return uclass ID for the device
340 enum uclass_id device_get_uclass_id(struct udevice *dev);
343 * dev_get_uclass_name() - return the uclass name of a device
345 * This checks that dev is not NULL.
347 * @dev: Device to check
348 * @return pointer to the uclass name for the device
350 const char *dev_get_uclass_name(struct udevice *dev);
353 * device_get_child() - Get the child of a device by index
355 * Returns the numbered child, 0 being the first. This does not use
356 * sequence numbers, only the natural order.
358 * @dev: Parent device to check
359 * @index: Child index
360 * @devp: Returns pointer to device
361 * @return 0 if OK, -ENODEV if no such device, other error if the device fails
364 int device_get_child(struct udevice *parent, int index, struct udevice **devp);
367 * device_find_child_by_seq() - Find a child device based on a sequence
369 * This searches for a device with the given seq or req_seq.
371 * For seq, if an active device has this sequence it will be returned.
372 * If there is no such device then this will return -ENODEV.
374 * For req_seq, if a device (whether activated or not) has this req_seq
375 * value, that device will be returned. This is a strong indication that
376 * the device will receive that sequence when activated.
378 * @parent: Parent device
379 * @seq_or_req_seq: Sequence number to find (0=first)
380 * @find_req_seq: true to find req_seq, false to find seq
381 * @devp: Returns pointer to device (there is only one per for each seq).
382 * Set to NULL if none is found
383 * @return 0 if OK, -ve on error
385 int device_find_child_by_seq(struct udevice *parent, int seq_or_req_seq,
386 bool find_req_seq, struct udevice **devp);
389 * device_get_child_by_seq() - Get a child device based on a sequence
391 * If an active device has this sequence it will be returned. If there is no
392 * such device then this will check for a device that is requesting this
395 * The device is probed to activate it ready for use.
397 * @parent: Parent device
398 * @seq: Sequence number to find (0=first)
399 * @devp: Returns pointer to device (there is only one per for each seq)
400 * Set to NULL if none is found
401 * @return 0 if OK, -ve on error
403 int device_get_child_by_seq(struct udevice *parent, int seq,
404 struct udevice **devp);
407 * device_find_child_by_of_offset() - Find a child device based on FDT offset
409 * Locates a child device by its device tree offset.
411 * @parent: Parent device
412 * @of_offset: Device tree offset to find
413 * @devp: Returns pointer to device if found, otherwise this is set to NULL
414 * @return 0 if OK, -ve on error
416 int device_find_child_by_of_offset(struct udevice *parent, int of_offset,
417 struct udevice **devp);
420 * device_get_child_by_of_offset() - Get a child device based on FDT offset
422 * Locates a child device by its device tree offset.
424 * The device is probed to activate it ready for use.
426 * @parent: Parent device
427 * @of_offset: Device tree offset to find
428 * @devp: Returns pointer to device if found, otherwise this is set to NULL
429 * @return 0 if OK, -ve on error
431 int device_get_child_by_of_offset(struct udevice *parent, int of_offset,
432 struct udevice **devp);
435 * device_get_global_by_of_offset() - Get a device based on FDT offset
437 * Locates a device by its device tree offset, searching globally throughout
438 * the all driver model devices.
440 * The device is probed to activate it ready for use.
442 * @of_offset: Device tree offset to find
443 * @devp: Returns pointer to device if found, otherwise this is set to NULL
444 * @return 0 if OK, -ve on error
446 int device_get_global_by_of_offset(int of_offset, struct udevice **devp);
449 * device_find_first_child() - Find the first child of a device
451 * @parent: Parent device to search
452 * @devp: Returns first child device, or NULL if none
455 int device_find_first_child(struct udevice *parent, struct udevice **devp);
458 * device_find_next_child() - Find the next child of a device
460 * @devp: Pointer to previous child device on entry. Returns pointer to next
461 * child device, or NULL if none
464 int device_find_next_child(struct udevice **devp);
467 * dev_get_addr() - Get the reg property of a device
469 * @dev: Pointer to a device
473 fdt_addr_t dev_get_addr(struct udevice *dev);
476 * dev_get_addr_ptr() - Return pointer to the address of the reg property
479 * @dev: Pointer to a device
481 * @return Pointer to addr, or NULL if there is no such property
483 void *dev_get_addr_ptr(struct udevice *dev);
486 * dev_map_physmem() - Read device address from reg property of the
487 * device node and map the address into CPU address
490 * @dev: Pointer to device
491 * @size: size of the memory to map
493 * @return mapped address, or NULL if the device does not have reg
496 void *dev_map_physmem(struct udevice *dev, unsigned long size);
499 * dev_get_addr_index() - Get the indexed reg property of a device
501 * @dev: Pointer to a device
502 * @index: the 'reg' property can hold a list of <addr, size> pairs
503 * and @index is used to select which one is required
507 fdt_addr_t dev_get_addr_index(struct udevice *dev, int index);
510 * dev_get_addr_size_index() - Get the indexed reg property of a device
512 * Returns the address and size specified in the 'reg' property of a device.
514 * @dev: Pointer to a device
515 * @index: the 'reg' property can hold a list of <addr, size> pairs
516 * and @index is used to select which one is required
517 * @size: Pointer to size varible - this function returns the size
518 * specified in the 'reg' property here
522 fdt_addr_t dev_get_addr_size_index(struct udevice *dev, int index,
526 * dev_get_addr_name() - Get the reg property of a device, indexed by name
528 * @dev: Pointer to a device
529 * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
530 * 'reg-names' property providing named-based identification. @index
531 * indicates the value to search for in 'reg-names'.
535 fdt_addr_t dev_get_addr_name(struct udevice *dev, const char *name);
538 * device_has_children() - check if a device has any children
540 * @dev: Device to check
541 * @return true if the device has one or more children
543 bool device_has_children(struct udevice *dev);
546 * device_has_active_children() - check if a device has any active children
548 * @dev: Device to check
549 * @return true if the device has one or more children and at least one of
550 * them is active (probed).
552 bool device_has_active_children(struct udevice *dev);
555 * device_is_last_sibling() - check if a device is the last sibling
557 * This function can be useful for display purposes, when special action needs
558 * to be taken when displaying the last sibling. This can happen when a tree
559 * view of devices is being displayed.
561 * @dev: Device to check
562 * @return true if there are no more siblings after this one - i.e. is it
565 bool device_is_last_sibling(struct udevice *dev);
568 * device_set_name() - set the name of a device
570 * This must be called in the device's bind() method and no later. Normally
571 * this is unnecessary but for probed devices which don't get a useful name
572 * this function can be helpful.
574 * The name is allocated and will be freed automatically when the device is
577 * @dev: Device to update
578 * @name: New name (this string is allocated new memory and attached to
580 * @return 0 if OK, -ENOMEM if there is not enough memory to allocate the
583 int device_set_name(struct udevice *dev, const char *name);
586 * device_set_name_alloced() - note that a device name is allocated
588 * This sets the DM_FLAG_NAME_ALLOCED flag for the device, so that when it is
589 * unbound the name will be freed. This avoids memory leaks.
591 * @dev: Device to update
593 void device_set_name_alloced(struct udevice *dev);
596 * of_device_is_compatible() - check if the device is compatible with the compat
598 * This allows to check whether the device is comaptible with the compat.
600 * @dev: udevice pointer for which compatible needs to be verified.
601 * @compat: Compatible string which needs to verified in the given
603 * @return true if OK, false if the compatible is not found
605 bool of_device_is_compatible(struct udevice *dev, const char *compat);
608 * of_machine_is_compatible() - check if the machine is compatible with
611 * This allows to check whether the machine is comaptible with the compat.
613 * @compat: Compatible string which needs to verified
614 * @return true if OK, false if the compatible is not found
616 bool of_machine_is_compatible(const char *compat);
619 * device_is_on_pci_bus - Test if a device is on a PCI bus
621 * @dev: device to test
622 * @return: true if it is on a PCI bus, false otherwise
624 static inline bool device_is_on_pci_bus(struct udevice *dev)
626 return device_get_uclass_id(dev->parent) == UCLASS_PCI;
630 * device_foreach_child_safe() - iterate through child devices safely
632 * This allows the @pos child to be removed in the loop if required.
634 * @pos: struct udevice * for the current device
635 * @next: struct udevice * for the next device
636 * @parent: parent device to scan
638 #define device_foreach_child_safe(pos, next, parent) \
639 list_for_each_entry_safe(pos, next, &parent->child_head, sibling_node)
642 * dm_scan_fdt_dev() - Bind child device in a the device tree
644 * This handles device which have sub-nodes in the device tree. It scans all
645 * sub-nodes and binds drivers for each node where a driver can be found.
647 * If this is called prior to relocation, only pre-relocation devices will be
648 * bound (those marked with u-boot,dm-pre-reloc in the device tree, or where
649 * the driver has the DM_FLAG_PRE_RELOC flag set). Otherwise, all devices will
652 * @dev: Device to scan
653 * @return 0 if OK, -ve on error
655 int dm_scan_fdt_dev(struct udevice *dev);
657 /* device resource management */
658 typedef void (*dr_release_t)(struct udevice *dev, void *res);
659 typedef int (*dr_match_t)(struct udevice *dev, void *res, void *match_data);
663 #ifdef CONFIG_DEBUG_DEVRES
664 void *__devres_alloc(dr_release_t release, size_t size, gfp_t gfp,
666 #define _devres_alloc(release, size, gfp) \
667 __devres_alloc(release, size, gfp, #release)
669 void *_devres_alloc(dr_release_t release, size_t size, gfp_t gfp);
673 * devres_alloc() - Allocate device resource data
674 * @release: Release function devres will be associated with
675 * @size: Allocation size
676 * @gfp: Allocation flags
678 * Allocate devres of @size bytes. The allocated area is associated
679 * with @release. The returned pointer can be passed to
680 * other devres_*() functions.
683 * Pointer to allocated devres on success, NULL on failure.
685 #define devres_alloc(release, size, gfp) \
686 _devres_alloc(release, size, gfp | __GFP_ZERO)
689 * devres_free() - Free device resource data
690 * @res: Pointer to devres data to free
692 * Free devres created with devres_alloc().
694 void devres_free(void *res);
697 * devres_add() - Register device resource
698 * @dev: Device to add resource to
699 * @res: Resource to register
701 * Register devres @res to @dev. @res should have been allocated
702 * using devres_alloc(). On driver detach, the associated release
703 * function will be invoked and devres will be freed automatically.
705 void devres_add(struct udevice *dev, void *res);
708 * devres_find() - Find device resource
709 * @dev: Device to lookup resource from
710 * @release: Look for resources associated with this release function
711 * @match: Match function (optional)
712 * @match_data: Data for the match function
714 * Find the latest devres of @dev which is associated with @release
715 * and for which @match returns 1. If @match is NULL, it's considered
718 * @return pointer to found devres, NULL if not found.
720 void *devres_find(struct udevice *dev, dr_release_t release,
721 dr_match_t match, void *match_data);
724 * devres_get() - Find devres, if non-existent, add one atomically
725 * @dev: Device to lookup or add devres for
726 * @new_res: Pointer to new initialized devres to add if not found
727 * @match: Match function (optional)
728 * @match_data: Data for the match function
730 * Find the latest devres of @dev which has the same release function
731 * as @new_res and for which @match return 1. If found, @new_res is
732 * freed; otherwise, @new_res is added atomically.
734 * @return ointer to found or added devres.
736 void *devres_get(struct udevice *dev, void *new_res,
737 dr_match_t match, void *match_data);
740 * devres_remove() - Find a device resource and remove it
741 * @dev: Device to find resource from
742 * @release: Look for resources associated with this release function
743 * @match: Match function (optional)
744 * @match_data: Data for the match function
746 * Find the latest devres of @dev associated with @release and for
747 * which @match returns 1. If @match is NULL, it's considered to
748 * match all. If found, the resource is removed atomically and
751 * @return ointer to removed devres on success, NULL if not found.
753 void *devres_remove(struct udevice *dev, dr_release_t release,
754 dr_match_t match, void *match_data);
757 * devres_destroy() - Find a device resource and destroy it
758 * @dev: Device to find resource from
759 * @release: Look for resources associated with this release function
760 * @match: Match function (optional)
761 * @match_data: Data for the match function
763 * Find the latest devres of @dev associated with @release and for
764 * which @match returns 1. If @match is NULL, it's considered to
765 * match all. If found, the resource is removed atomically and freed.
767 * Note that the release function for the resource will not be called,
768 * only the devres-allocated data will be freed. The caller becomes
769 * responsible for freeing any other data.
771 * @return 0 if devres is found and freed, -ENOENT if not found.
773 int devres_destroy(struct udevice *dev, dr_release_t release,
774 dr_match_t match, void *match_data);
777 * devres_release() - Find a device resource and destroy it, calling release
778 * @dev: Device to find resource from
779 * @release: Look for resources associated with this release function
780 * @match: Match function (optional)
781 * @match_data: Data for the match function
783 * Find the latest devres of @dev associated with @release and for
784 * which @match returns 1. If @match is NULL, it's considered to
785 * match all. If found, the resource is removed atomically, the
786 * release function called and the resource freed.
788 * @return 0 if devres is found and freed, -ENOENT if not found.
790 int devres_release(struct udevice *dev, dr_release_t release,
791 dr_match_t match, void *match_data);
793 /* managed devm_k.alloc/kfree for device drivers */
795 * devm_kmalloc() - Resource-managed kmalloc
796 * @dev: Device to allocate memory for
797 * @size: Allocation size
798 * @gfp: Allocation gfp flags
800 * Managed kmalloc. Memory allocated with this function is
801 * automatically freed on driver detach. Like all other devres
802 * resources, guaranteed alignment is unsigned long long.
804 * @return pointer to allocated memory on success, NULL on failure.
806 void *devm_kmalloc(struct udevice *dev, size_t size, gfp_t gfp);
807 static inline void *devm_kzalloc(struct udevice *dev, size_t size, gfp_t gfp)
809 return devm_kmalloc(dev, size, gfp | __GFP_ZERO);
811 static inline void *devm_kmalloc_array(struct udevice *dev,
812 size_t n, size_t size, gfp_t flags)
814 if (size != 0 && n > SIZE_MAX / size)
816 return devm_kmalloc(dev, n * size, flags);
818 static inline void *devm_kcalloc(struct udevice *dev,
819 size_t n, size_t size, gfp_t flags)
821 return devm_kmalloc_array(dev, n, size, flags | __GFP_ZERO);
825 * devm_kfree() - Resource-managed kfree
826 * @dev: Device this memory belongs to
827 * @ptr: Memory to free
829 * Free memory allocated with devm_kmalloc().
831 void devm_kfree(struct udevice *dev, void *ptr);
833 #else /* ! CONFIG_DEVRES */
835 static inline void *devres_alloc(dr_release_t release, size_t size, gfp_t gfp)
837 return kzalloc(size, gfp);
840 static inline void devres_free(void *res)
845 static inline void devres_add(struct udevice *dev, void *res)
849 static inline void *devres_find(struct udevice *dev, dr_release_t release,
850 dr_match_t match, void *match_data)
855 static inline void *devres_get(struct udevice *dev, void *new_res,
856 dr_match_t match, void *match_data)
861 static inline void *devres_remove(struct udevice *dev, dr_release_t release,
862 dr_match_t match, void *match_data)
867 static inline int devres_destroy(struct udevice *dev, dr_release_t release,
868 dr_match_t match, void *match_data)
873 static inline int devres_release(struct udevice *dev, dr_release_t release,
874 dr_match_t match, void *match_data)
879 static inline void *devm_kmalloc(struct udevice *dev, size_t size, gfp_t gfp)
881 return kmalloc(size, gfp);
884 static inline void *devm_kzalloc(struct udevice *dev, size_t size, gfp_t gfp)
886 return kzalloc(size, gfp);
889 static inline void *devm_kmaloc_array(struct udevice *dev,
890 size_t n, size_t size, gfp_t flags)
892 /* TODO: add kmalloc_array() to linux/compat.h */
893 if (size != 0 && n > SIZE_MAX / size)
895 return kmalloc(n * size, flags);
898 static inline void *devm_kcalloc(struct udevice *dev,
899 size_t n, size_t size, gfp_t flags)
901 /* TODO: add kcalloc() to linux/compat.h */
902 return kmalloc(n * size, flags | __GFP_ZERO);
905 static inline void devm_kfree(struct udevice *dev, void *ptr)
910 #endif /* ! CONFIG_DEVRES */
913 * dm_set_translation_offset() - Set translation offset
914 * @offs: Translation offset
916 * Some platforms need a special address translation. Those
917 * platforms (e.g. mvebu in SPL) can configure a translation
918 * offset in the DM by calling this function. It will be
919 * added to all addresses returned in dev_get_addr().
921 void dm_set_translation_offset(fdt_addr_t offs);
924 * dm_get_translation_offset() - Get translation offset
926 * This function returns the translation offset that can
927 * be configured by calling dm_set_translation_offset().
929 * @return translation offset for the device address (0 as default).
931 fdt_addr_t dm_get_translation_offset(void);