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)
125 * struct udevice_id - Lists the compatible strings supported by a driver
126 * @compatible: Compatible string
127 * @data: Data for this compatible string
130 const char *compatible;
134 #if CONFIG_IS_ENABLED(OF_CONTROL)
135 #define of_match_ptr(_ptr) (_ptr)
137 #define of_match_ptr(_ptr) NULL
138 #endif /* CONFIG_IS_ENABLED(OF_CONTROL) */
141 * struct driver - A driver for a feature or peripheral
143 * This holds methods for setting up a new device, and also removing it.
144 * The device needs information to set itself up - this is provided either
145 * by platdata or a device tree node (which we find by looking up
146 * matching compatible strings with of_match).
148 * Drivers all belong to a uclass, representing a class of devices of the
149 * same type. Common elements of the drivers can be implemented in the uclass,
150 * or the uclass can provide a consistent interface to the drivers within
154 * @id: Identiies the uclass we belong to
155 * @of_match: List of compatible strings to match, and any identifying data
157 * @bind: Called to bind a device to its driver
158 * @probe: Called to probe a device, i.e. activate it
159 * @remove: Called to remove a device, i.e. de-activate it
160 * @unbind: Called to unbind a device from its driver
161 * @ofdata_to_platdata: Called before probe to decode device tree data
162 * @child_post_bind: Called after a new child has been bound
163 * @child_pre_probe: Called before a child device is probed. The device has
164 * memory allocated but it has not yet been probed.
165 * @child_post_remove: Called after a child device is removed. The device
166 * has memory allocated but its device_remove() method has been called.
167 * @priv_auto_alloc_size: If non-zero this is the size of the private data
168 * to be allocated in the device's ->priv pointer. If zero, then the driver
169 * is responsible for allocating any data required.
170 * @platdata_auto_alloc_size: If non-zero this is the size of the
171 * platform data to be allocated in the device's ->platdata pointer.
172 * This is typically only useful for device-tree-aware drivers (those with
173 * an of_match), since drivers which use platdata will have the data
174 * provided in the U_BOOT_DEVICE() instantiation.
175 * @per_child_auto_alloc_size: Each device can hold private data owned by
176 * its parent. If required this will be automatically allocated if this
178 * @per_child_platdata_auto_alloc_size: A bus likes to store information about
179 * its children. If non-zero this is the size of this data, to be allocated
180 * in the child's parent_platdata pointer.
181 * @ops: Driver-specific operations. This is typically a list of function
182 * pointers defined by the driver, to implement driver functions required by
184 * @flags: driver flags - see DM_FLAGS_...
189 const struct udevice_id *of_match;
190 int (*bind)(struct udevice *dev);
191 int (*probe)(struct udevice *dev);
192 int (*remove)(struct udevice *dev);
193 int (*unbind)(struct udevice *dev);
194 int (*ofdata_to_platdata)(struct udevice *dev);
195 int (*child_post_bind)(struct udevice *dev);
196 int (*child_pre_probe)(struct udevice *dev);
197 int (*child_post_remove)(struct udevice *dev);
198 int priv_auto_alloc_size;
199 int platdata_auto_alloc_size;
200 int per_child_auto_alloc_size;
201 int per_child_platdata_auto_alloc_size;
202 const void *ops; /* driver-specific operations */
206 /* Declare a new U-Boot driver */
207 #define U_BOOT_DRIVER(__name) \
208 ll_entry_declare(struct driver, __name, driver)
211 * dev_get_platdata() - Get the platform data for a device
213 * This checks that dev is not NULL, but no other checks for now
215 * @dev Device to check
216 * @return platform data, or NULL if none
218 void *dev_get_platdata(struct udevice *dev);
221 * dev_get_parent_platdata() - Get the parent platform data for a device
223 * This checks that dev is not NULL, but no other checks for now
225 * @dev Device to check
226 * @return parent's platform data, or NULL if none
228 void *dev_get_parent_platdata(struct udevice *dev);
231 * dev_get_uclass_platdata() - Get the uclass platform data for a device
233 * This checks that dev is not NULL, but no other checks for now
235 * @dev Device to check
236 * @return uclass's platform data, or NULL if none
238 void *dev_get_uclass_platdata(struct udevice *dev);
241 * dev_get_priv() - Get the private data for a device
243 * This checks that dev is not NULL, but no other checks for now
245 * @dev Device to check
246 * @return private data, or NULL if none
248 void *dev_get_priv(struct udevice *dev);
251 * dev_get_parent_priv() - Get the parent private data for a device
253 * The parent private data is data stored in the device but owned by the
254 * parent. For example, a USB device may have parent data which contains
255 * information about how to talk to the device over USB.
257 * This checks that dev is not NULL, but no other checks for now
259 * @dev Device to check
260 * @return parent data, or NULL if none
262 void *dev_get_parent_priv(struct udevice *dev);
265 * dev_get_uclass_priv() - Get the private uclass data for a device
267 * This checks that dev is not NULL, but no other checks for now
269 * @dev Device to check
270 * @return private uclass data for this device, or NULL if none
272 void *dev_get_uclass_priv(struct udevice *dev);
275 * struct dev_get_parent() - Get the parent of a device
277 * @child: Child to check
278 * @return parent of child, or NULL if this is the root device
280 struct udevice *dev_get_parent(struct udevice *child);
283 * dev_get_driver_data() - get the driver data used to bind a device
285 * When a device is bound using a device tree node, it matches a
286 * particular compatible string in struct udevice_id. This function
287 * returns the associated data value for that compatible string. This is
288 * the 'data' field in struct udevice_id.
290 * As an example, consider this structure:
291 * static const struct udevice_id tegra_i2c_ids[] = {
292 * { .compatible = "nvidia,tegra114-i2c", .data = TYPE_114 },
293 * { .compatible = "nvidia,tegra20-i2c", .data = TYPE_STD },
294 * { .compatible = "nvidia,tegra20-i2c-dvc", .data = TYPE_DVC },
298 * When driver model finds a driver for this it will store the 'data' value
299 * corresponding to the compatible string it matches. This function returns
300 * that value. This allows the driver to handle several variants of a device.
302 * For USB devices, this is the driver_info field in struct usb_device_id.
304 * @dev: Device to check
305 * @return driver data (0 if none is provided)
307 ulong dev_get_driver_data(struct udevice *dev);
310 * dev_get_driver_ops() - get the device's driver's operations
312 * This checks that dev is not NULL, and returns the pointer to device's
313 * driver's operations.
315 * @dev: Device to check
316 * @return void pointer to driver's operations or NULL for NULL-dev or NULL-ops
318 const void *dev_get_driver_ops(struct udevice *dev);
321 * device_get_uclass_id() - return the uclass ID of a device
323 * @dev: Device to check
324 * @return uclass ID for the device
326 enum uclass_id device_get_uclass_id(struct udevice *dev);
329 * dev_get_uclass_name() - return the uclass name of a device
331 * This checks that dev is not NULL.
333 * @dev: Device to check
334 * @return pointer to the uclass name for the device
336 const char *dev_get_uclass_name(struct udevice *dev);
339 * device_get_child() - Get the child of a device by index
341 * Returns the numbered child, 0 being the first. This does not use
342 * sequence numbers, only the natural order.
344 * @dev: Parent device to check
345 * @index: Child index
346 * @devp: Returns pointer to device
347 * @return 0 if OK, -ENODEV if no such device, other error if the device fails
350 int device_get_child(struct udevice *parent, int index, struct udevice **devp);
353 * device_find_child_by_seq() - Find a child device based on a sequence
355 * This searches for a device with the given seq or req_seq.
357 * For seq, if an active device has this sequence it will be returned.
358 * If there is no such device then this will return -ENODEV.
360 * For req_seq, if a device (whether activated or not) has this req_seq
361 * value, that device will be returned. This is a strong indication that
362 * the device will receive that sequence when activated.
364 * @parent: Parent device
365 * @seq_or_req_seq: Sequence number to find (0=first)
366 * @find_req_seq: true to find req_seq, false to find seq
367 * @devp: Returns pointer to device (there is only one per for each seq).
368 * Set to NULL if none is found
369 * @return 0 if OK, -ve on error
371 int device_find_child_by_seq(struct udevice *parent, int seq_or_req_seq,
372 bool find_req_seq, struct udevice **devp);
375 * device_get_child_by_seq() - Get a child device based on a sequence
377 * If an active device has this sequence it will be returned. If there is no
378 * such device then this will check for a device that is requesting this
381 * The device is probed to activate it ready for use.
383 * @parent: Parent device
384 * @seq: Sequence number to find (0=first)
385 * @devp: Returns pointer to device (there is only one per for each seq)
386 * Set to NULL if none is found
387 * @return 0 if OK, -ve on error
389 int device_get_child_by_seq(struct udevice *parent, int seq,
390 struct udevice **devp);
393 * device_find_child_by_of_offset() - Find a child device based on FDT offset
395 * Locates a child device by its device tree offset.
397 * @parent: Parent device
398 * @of_offset: Device tree offset to find
399 * @devp: Returns pointer to device if found, otherwise this is set to NULL
400 * @return 0 if OK, -ve on error
402 int device_find_child_by_of_offset(struct udevice *parent, int of_offset,
403 struct udevice **devp);
406 * device_get_child_by_of_offset() - Get a child device based on FDT offset
408 * Locates a child device by its device tree offset.
410 * The device is probed to activate it ready for use.
412 * @parent: Parent device
413 * @of_offset: Device tree offset to find
414 * @devp: Returns pointer to device if found, otherwise this is set to NULL
415 * @return 0 if OK, -ve on error
417 int device_get_child_by_of_offset(struct udevice *parent, int of_offset,
418 struct udevice **devp);
421 * device_get_global_by_of_offset() - Get a device based on FDT offset
423 * Locates a device by its device tree offset, searching globally throughout
424 * the all driver model devices.
426 * The device is probed to activate it ready for use.
428 * @of_offset: Device tree offset to find
429 * @devp: Returns pointer to device if found, otherwise this is set to NULL
430 * @return 0 if OK, -ve on error
432 int device_get_global_by_of_offset(int of_offset, struct udevice **devp);
435 * device_find_first_child() - Find the first child of a device
437 * @parent: Parent device to search
438 * @devp: Returns first child device, or NULL if none
441 int device_find_first_child(struct udevice *parent, struct udevice **devp);
444 * device_find_next_child() - Find the next child of a device
446 * @devp: Pointer to previous child device on entry. Returns pointer to next
447 * child device, or NULL if none
450 int device_find_next_child(struct udevice **devp);
453 * dev_get_addr() - Get the reg property of a device
455 * @dev: Pointer to a device
459 fdt_addr_t dev_get_addr(struct udevice *dev);
462 * dev_get_addr_ptr() - Return pointer to the address of the reg property
465 * @dev: Pointer to a device
467 * @return Pointer to addr, or NULL if there is no such property
469 void *dev_get_addr_ptr(struct udevice *dev);
472 * dev_map_physmem() - Read device address from reg property of the
473 * device node and map the address into CPU address
476 * @dev: Pointer to device
477 * @size: size of the memory to map
479 * @return mapped address, or NULL if the device does not have reg
482 void *dev_map_physmem(struct udevice *dev, unsigned long size);
485 * dev_get_addr_index() - Get the indexed reg property of a device
487 * @dev: Pointer to a device
488 * @index: the 'reg' property can hold a list of <addr, size> pairs
489 * and @index is used to select which one is required
493 fdt_addr_t dev_get_addr_index(struct udevice *dev, int index);
496 * dev_get_addr_name() - Get the reg property of a device, indexed by name
498 * @dev: Pointer to a device
499 * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
500 * 'reg-names' property providing named-based identification. @index
501 * indicates the value to search for in 'reg-names'.
505 fdt_addr_t dev_get_addr_name(struct udevice *dev, const char *name);
508 * device_has_children() - check if a device has any children
510 * @dev: Device to check
511 * @return true if the device has one or more children
513 bool device_has_children(struct udevice *dev);
516 * device_has_active_children() - check if a device has any active children
518 * @dev: Device to check
519 * @return true if the device has one or more children and at least one of
520 * them is active (probed).
522 bool device_has_active_children(struct udevice *dev);
525 * device_is_last_sibling() - check if a device is the last sibling
527 * This function can be useful for display purposes, when special action needs
528 * to be taken when displaying the last sibling. This can happen when a tree
529 * view of devices is being displayed.
531 * @dev: Device to check
532 * @return true if there are no more siblings after this one - i.e. is it
535 bool device_is_last_sibling(struct udevice *dev);
538 * device_set_name() - set the name of a device
540 * This must be called in the device's bind() method and no later. Normally
541 * this is unnecessary but for probed devices which don't get a useful name
542 * this function can be helpful.
544 * The name is allocated and will be freed automatically when the device is
547 * @dev: Device to update
548 * @name: New name (this string is allocated new memory and attached to
550 * @return 0 if OK, -ENOMEM if there is not enough memory to allocate the
553 int device_set_name(struct udevice *dev, const char *name);
556 * device_set_name_alloced() - note that a device name is allocated
558 * This sets the DM_FLAG_NAME_ALLOCED flag for the device, so that when it is
559 * unbound the name will be freed. This avoids memory leaks.
561 * @dev: Device to update
563 void device_set_name_alloced(struct udevice *dev);
566 * of_device_is_compatible() - check if the device is compatible with the compat
568 * This allows to check whether the device is comaptible with the compat.
570 * @dev: udevice pointer for which compatible needs to be verified.
571 * @compat: Compatible string which needs to verified in the given
573 * @return true if OK, false if the compatible is not found
575 bool of_device_is_compatible(struct udevice *dev, const char *compat);
578 * of_machine_is_compatible() - check if the machine is compatible with
581 * This allows to check whether the machine is comaptible with the compat.
583 * @compat: Compatible string which needs to verified
584 * @return true if OK, false if the compatible is not found
586 bool of_machine_is_compatible(const char *compat);
589 * device_is_on_pci_bus - Test if a device is on a PCI bus
591 * @dev: device to test
592 * @return: true if it is on a PCI bus, false otherwise
594 static inline bool device_is_on_pci_bus(struct udevice *dev)
596 return device_get_uclass_id(dev->parent) == UCLASS_PCI;
600 * device_foreach_child_safe() - iterate through child devices safely
602 * This allows the @pos child to be removed in the loop if required.
604 * @pos: struct udevice * for the current device
605 * @next: struct udevice * for the next device
606 * @parent: parent device to scan
608 #define device_foreach_child_safe(pos, next, parent) \
609 list_for_each_entry_safe(pos, next, &parent->child_head, sibling_node)
611 /* device resource management */
612 typedef void (*dr_release_t)(struct udevice *dev, void *res);
613 typedef int (*dr_match_t)(struct udevice *dev, void *res, void *match_data);
617 #ifdef CONFIG_DEBUG_DEVRES
618 void *__devres_alloc(dr_release_t release, size_t size, gfp_t gfp,
620 #define _devres_alloc(release, size, gfp) \
621 __devres_alloc(release, size, gfp, #release)
623 void *_devres_alloc(dr_release_t release, size_t size, gfp_t gfp);
627 * devres_alloc() - Allocate device resource data
628 * @release: Release function devres will be associated with
629 * @size: Allocation size
630 * @gfp: Allocation flags
632 * Allocate devres of @size bytes. The allocated area is associated
633 * with @release. The returned pointer can be passed to
634 * other devres_*() functions.
637 * Pointer to allocated devres on success, NULL on failure.
639 #define devres_alloc(release, size, gfp) \
640 _devres_alloc(release, size, gfp | __GFP_ZERO)
643 * devres_free() - Free device resource data
644 * @res: Pointer to devres data to free
646 * Free devres created with devres_alloc().
648 void devres_free(void *res);
651 * devres_add() - Register device resource
652 * @dev: Device to add resource to
653 * @res: Resource to register
655 * Register devres @res to @dev. @res should have been allocated
656 * using devres_alloc(). On driver detach, the associated release
657 * function will be invoked and devres will be freed automatically.
659 void devres_add(struct udevice *dev, void *res);
662 * devres_find() - Find device resource
663 * @dev: Device to lookup resource from
664 * @release: Look for resources associated with this release function
665 * @match: Match function (optional)
666 * @match_data: Data for the match function
668 * Find the latest devres of @dev which is associated with @release
669 * and for which @match returns 1. If @match is NULL, it's considered
672 * @return pointer to found devres, NULL if not found.
674 void *devres_find(struct udevice *dev, dr_release_t release,
675 dr_match_t match, void *match_data);
678 * devres_get() - Find devres, if non-existent, add one atomically
679 * @dev: Device to lookup or add devres for
680 * @new_res: Pointer to new initialized devres to add if not found
681 * @match: Match function (optional)
682 * @match_data: Data for the match function
684 * Find the latest devres of @dev which has the same release function
685 * as @new_res and for which @match return 1. If found, @new_res is
686 * freed; otherwise, @new_res is added atomically.
688 * @return ointer to found or added devres.
690 void *devres_get(struct udevice *dev, void *new_res,
691 dr_match_t match, void *match_data);
694 * devres_remove() - Find a device resource and remove it
695 * @dev: Device to find resource from
696 * @release: Look for resources associated with this release function
697 * @match: Match function (optional)
698 * @match_data: Data for the match function
700 * Find the latest devres of @dev associated with @release and for
701 * which @match returns 1. If @match is NULL, it's considered to
702 * match all. If found, the resource is removed atomically and
705 * @return ointer to removed devres on success, NULL if not found.
707 void *devres_remove(struct udevice *dev, dr_release_t release,
708 dr_match_t match, void *match_data);
711 * devres_destroy() - Find a device resource and destroy it
712 * @dev: Device to find resource from
713 * @release: Look for resources associated with this release function
714 * @match: Match function (optional)
715 * @match_data: Data for the match function
717 * Find the latest devres of @dev associated with @release and for
718 * which @match returns 1. If @match is NULL, it's considered to
719 * match all. If found, the resource is removed atomically and freed.
721 * Note that the release function for the resource will not be called,
722 * only the devres-allocated data will be freed. The caller becomes
723 * responsible for freeing any other data.
725 * @return 0 if devres is found and freed, -ENOENT if not found.
727 int devres_destroy(struct udevice *dev, dr_release_t release,
728 dr_match_t match, void *match_data);
731 * devres_release() - Find a device resource and destroy it, calling release
732 * @dev: Device to find resource from
733 * @release: Look for resources associated with this release function
734 * @match: Match function (optional)
735 * @match_data: Data for the match function
737 * Find the latest devres of @dev associated with @release and for
738 * which @match returns 1. If @match is NULL, it's considered to
739 * match all. If found, the resource is removed atomically, the
740 * release function called and the resource freed.
742 * @return 0 if devres is found and freed, -ENOENT if not found.
744 int devres_release(struct udevice *dev, dr_release_t release,
745 dr_match_t match, void *match_data);
747 /* managed devm_k.alloc/kfree for device drivers */
749 * devm_kmalloc() - Resource-managed kmalloc
750 * @dev: Device to allocate memory for
751 * @size: Allocation size
752 * @gfp: Allocation gfp flags
754 * Managed kmalloc. Memory allocated with this function is
755 * automatically freed on driver detach. Like all other devres
756 * resources, guaranteed alignment is unsigned long long.
758 * @return pointer to allocated memory on success, NULL on failure.
760 void *devm_kmalloc(struct udevice *dev, size_t size, gfp_t gfp);
761 static inline void *devm_kzalloc(struct udevice *dev, size_t size, gfp_t gfp)
763 return devm_kmalloc(dev, size, gfp | __GFP_ZERO);
765 static inline void *devm_kmalloc_array(struct udevice *dev,
766 size_t n, size_t size, gfp_t flags)
768 if (size != 0 && n > SIZE_MAX / size)
770 return devm_kmalloc(dev, n * size, flags);
772 static inline void *devm_kcalloc(struct udevice *dev,
773 size_t n, size_t size, gfp_t flags)
775 return devm_kmalloc_array(dev, n, size, flags | __GFP_ZERO);
779 * devm_kfree() - Resource-managed kfree
780 * @dev: Device this memory belongs to
781 * @ptr: Memory to free
783 * Free memory allocated with devm_kmalloc().
785 void devm_kfree(struct udevice *dev, void *ptr);
787 #else /* ! CONFIG_DEVRES */
789 static inline void *devres_alloc(dr_release_t release, size_t size, gfp_t gfp)
791 return kzalloc(size, gfp);
794 static inline void devres_free(void *res)
799 static inline void devres_add(struct udevice *dev, void *res)
803 static inline void *devres_find(struct udevice *dev, dr_release_t release,
804 dr_match_t match, void *match_data)
809 static inline void *devres_get(struct udevice *dev, void *new_res,
810 dr_match_t match, void *match_data)
815 static inline void *devres_remove(struct udevice *dev, dr_release_t release,
816 dr_match_t match, void *match_data)
821 static inline int devres_destroy(struct udevice *dev, dr_release_t release,
822 dr_match_t match, void *match_data)
827 static inline int devres_release(struct udevice *dev, dr_release_t release,
828 dr_match_t match, void *match_data)
833 static inline void *devm_kmalloc(struct udevice *dev, size_t size, gfp_t gfp)
835 return kmalloc(size, gfp);
838 static inline void *devm_kzalloc(struct udevice *dev, size_t size, gfp_t gfp)
840 return kzalloc(size, gfp);
843 static inline void *devm_kmaloc_array(struct udevice *dev,
844 size_t n, size_t size, gfp_t flags)
846 /* TODO: add kmalloc_array() to linux/compat.h */
847 if (size != 0 && n > SIZE_MAX / size)
849 return kmalloc(n * size, flags);
852 static inline void *devm_kcalloc(struct udevice *dev,
853 size_t n, size_t size, gfp_t flags)
855 /* TODO: add kcalloc() to linux/compat.h */
856 return kmalloc(n * size, flags | __GFP_ZERO);
859 static inline void devm_kfree(struct udevice *dev, void *ptr)
864 #endif /* ! CONFIG_DEVRES */
867 * dm_set_translation_offset() - Set translation offset
868 * @offs: Translation offset
870 * Some platforms need a special address translation. Those
871 * platforms (e.g. mvebu in SPL) can configure a translation
872 * offset in the DM by calling this function. It will be
873 * added to all addresses returned in dev_get_addr().
875 void dm_set_translation_offset(fdt_addr_t offs);
878 * dm_get_translation_offset() - Get translation offset
880 * This function returns the translation offset that can
881 * be configured by calling dm_set_translation_offset().
883 * @return translation offset for the device address (0 as default).
885 fdt_addr_t dm_get_translation_offset(void);