1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Copyright (c) 2013 Google, Inc
6 * Pavel Herrmann <morpheus.ibis@gmail.com>
7 * Marek Vasut <marex@denx.de>
13 #include <dm/ofnode.h>
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>
20 #include <linux/printk.h>
24 /* Driver is active (probed). Cleared when it is removed */
25 #define DM_FLAG_ACTIVATED (1 << 0)
27 /* DM is responsible for allocating and freeing platdata */
28 #define DM_FLAG_ALLOC_PDATA (1 << 1)
30 /* DM should init this device prior to relocation */
31 #define DM_FLAG_PRE_RELOC (1 << 2)
33 /* DM is responsible for allocating and freeing parent_platdata */
34 #define DM_FLAG_ALLOC_PARENT_PDATA (1 << 3)
36 /* DM is responsible for allocating and freeing uclass_platdata */
37 #define DM_FLAG_ALLOC_UCLASS_PDATA (1 << 4)
39 /* Allocate driver private data on a DMA boundary */
40 #define DM_FLAG_ALLOC_PRIV_DMA (1 << 5)
43 #define DM_FLAG_BOUND (1 << 6)
45 /* Device name is allocated and should be freed on unbind() */
46 #define DM_FLAG_NAME_ALLOCED (1 << 7)
48 /* Device has platform data provided by of-platdata */
49 #define DM_FLAG_OF_PLATDATA (1 << 8)
52 * Call driver remove function to stop currently active DMA transfers or
53 * give DMA buffers back to the HW / controller. This may be needed for
54 * some drivers to do some final stage cleanup before the OS is called
57 #define DM_FLAG_ACTIVE_DMA (1 << 9)
60 * Call driver remove function to do some final configuration, before
61 * U-Boot exits and the OS is started
63 #define DM_FLAG_OS_PREPARE (1 << 10)
65 /* DM does not enable/disable the power domains corresponding to this device */
66 #define DM_FLAG_DEFAULT_PD_CTRL_OFF (1 << 11)
68 /* Driver platdata has been read. Cleared when the device is removed */
69 #define DM_FLAG_PLATDATA_VALID (1 << 12)
72 * One or multiple of these flags are passed to device_remove() so that
73 * a selective device removal as specified by the remove-stage and the
74 * driver flags can be done.
77 /* Normal remove, remove all devices */
78 DM_REMOVE_NORMAL = 1 << 0,
80 /* Remove devices with active DMA */
81 DM_REMOVE_ACTIVE_DMA = DM_FLAG_ACTIVE_DMA,
83 /* Remove devices which need some final OS preparation steps */
84 DM_REMOVE_OS_PREPARE = DM_FLAG_OS_PREPARE,
86 /* Add more use cases here */
88 /* Remove devices with any active flag */
89 DM_REMOVE_ACTIVE_ALL = DM_REMOVE_ACTIVE_DMA | DM_REMOVE_OS_PREPARE,
93 * struct udevice - An instance of a driver
95 * This holds information about a device, which is a driver bound to a
96 * particular port or peripheral (essentially a driver instance).
98 * A device will come into existence through a 'bind' call, either due to
99 * a U_BOOT_DEVICE() macro (in which case platdata is non-NULL) or a node
100 * in the device tree (in which case of_offset is >= 0). In the latter case
101 * we translate the device tree information into platdata in a function
102 * implemented by the driver ofdata_to_platdata method (called just before the
103 * probe method if the device has a device tree node.
105 * All three of platdata, priv and uclass_priv can be allocated by the
106 * driver, or you can use the auto_alloc_size members of struct driver and
107 * struct uclass_driver to have driver model do this automatically.
109 * @driver: The driver used by this device
110 * @name: Name of device, typically the FDT node name
111 * @platdata: Configuration data for this device
112 * @parent_platdata: The parent bus's configuration data for this device
113 * @uclass_platdata: The uclass's configuration data for this device
114 * @node: Reference to device tree node for this device
115 * @driver_data: Driver data word for the entry that matched this device with
117 * @parent: Parent of this device, or NULL for the top level device
118 * @priv: Private data for this device
119 * @uclass: Pointer to uclass for this device
120 * @uclass_priv: The uclass's private data for this device
121 * @parent_priv: The parent's private data for this device
122 * @uclass_node: Used by uclass to link its devices
123 * @child_head: List of children of this device
124 * @sibling_node: Next device in list of all devices
125 * @flags: Flags for this device DM_FLAG_...
126 * @req_seq: Requested sequence number for this device (-1 = any)
127 * @seq: Allocated sequence number for this device (-1 = none). This is set up
128 * when the device is probed and will be unique within the device's uclass.
129 * @devres_head: List of memory allocations associated with this device.
130 * When CONFIG_DEVRES is enabled, devm_kmalloc() and friends will
131 * add to this list. Memory so-allocated will be freed
132 * automatically when the device is removed / unbound
135 const struct driver *driver;
138 void *parent_platdata;
139 void *uclass_platdata;
142 struct udevice *parent;
144 struct uclass *uclass;
147 struct list_head uclass_node;
148 struct list_head child_head;
149 struct list_head sibling_node;
154 struct list_head devres_head;
158 /* Maximum sequence number supported */
159 #define DM_MAX_SEQ 999
161 /* Returns the operations for a device */
162 #define device_get_ops(dev) (dev->driver->ops)
164 /* Returns non-zero if the device is active (probed and not removed) */
165 #define device_active(dev) ((dev)->flags & DM_FLAG_ACTIVATED)
167 static inline int dev_of_offset(const struct udevice *dev)
169 return ofnode_to_offset(dev->node);
172 static inline void dev_set_of_offset(struct udevice *dev, int of_offset)
174 dev->node = offset_to_ofnode(of_offset);
177 static inline bool dev_has_of_node(struct udevice *dev)
179 return ofnode_valid(dev->node);
183 * struct udevice_id - Lists the compatible strings supported by a driver
184 * @compatible: Compatible string
185 * @data: Data for this compatible string
188 const char *compatible;
192 #if CONFIG_IS_ENABLED(OF_CONTROL)
193 #define of_match_ptr(_ptr) (_ptr)
195 #define of_match_ptr(_ptr) NULL
196 #endif /* CONFIG_IS_ENABLED(OF_CONTROL) */
199 * struct driver - A driver for a feature or peripheral
201 * This holds methods for setting up a new device, and also removing it.
202 * The device needs information to set itself up - this is provided either
203 * by platdata or a device tree node (which we find by looking up
204 * matching compatible strings with of_match).
206 * Drivers all belong to a uclass, representing a class of devices of the
207 * same type. Common elements of the drivers can be implemented in the uclass,
208 * or the uclass can provide a consistent interface to the drivers within
212 * @id: Identifies the uclass we belong to
213 * @of_match: List of compatible strings to match, and any identifying data
215 * @bind: Called to bind a device to its driver
216 * @probe: Called to probe a device, i.e. activate it
217 * @remove: Called to remove a device, i.e. de-activate it
218 * @unbind: Called to unbind a device from its driver
219 * @ofdata_to_platdata: Called before probe to decode device tree data
220 * @child_post_bind: Called after a new child has been bound
221 * @child_pre_probe: Called before a child device is probed. The device has
222 * memory allocated but it has not yet been probed.
223 * @child_post_remove: Called after a child device is removed. The device
224 * has memory allocated but its device_remove() method has been called.
225 * @priv_auto_alloc_size: If non-zero this is the size of the private data
226 * to be allocated in the device's ->priv pointer. If zero, then the driver
227 * is responsible for allocating any data required.
228 * @platdata_auto_alloc_size: If non-zero this is the size of the
229 * platform data to be allocated in the device's ->platdata pointer.
230 * This is typically only useful for device-tree-aware drivers (those with
231 * an of_match), since drivers which use platdata will have the data
232 * provided in the U_BOOT_DEVICE() instantiation.
233 * @per_child_auto_alloc_size: Each device can hold private data owned by
234 * its parent. If required this will be automatically allocated if this
236 * @per_child_platdata_auto_alloc_size: A bus likes to store information about
237 * its children. If non-zero this is the size of this data, to be allocated
238 * in the child's parent_platdata pointer.
239 * @ops: Driver-specific operations. This is typically a list of function
240 * pointers defined by the driver, to implement driver functions required by
242 * @flags: driver flags - see DM_FLAGS_...
247 const struct udevice_id *of_match;
248 int (*bind)(struct udevice *dev);
249 int (*probe)(struct udevice *dev);
250 int (*remove)(struct udevice *dev);
251 int (*unbind)(struct udevice *dev);
252 int (*ofdata_to_platdata)(struct udevice *dev);
253 int (*child_post_bind)(struct udevice *dev);
254 int (*child_pre_probe)(struct udevice *dev);
255 int (*child_post_remove)(struct udevice *dev);
256 int priv_auto_alloc_size;
257 int platdata_auto_alloc_size;
258 int per_child_auto_alloc_size;
259 int per_child_platdata_auto_alloc_size;
260 const void *ops; /* driver-specific operations */
264 /* Declare a new U-Boot driver */
265 #define U_BOOT_DRIVER(__name) \
266 ll_entry_declare(struct driver, __name, driver)
268 /* Get a pointer to a given driver */
269 #define DM_GET_DRIVER(__name) \
270 ll_entry_get(struct driver, __name, driver)
273 * dev_get_platdata() - Get the platform data for a device
275 * This checks that dev is not NULL, but no other checks for now
277 * @dev Device to check
278 * @return platform data, or NULL if none
280 void *dev_get_platdata(const struct udevice *dev);
283 * dev_get_parent_platdata() - Get the parent platform data for a device
285 * This checks that dev is not NULL, but no other checks for now
287 * @dev Device to check
288 * @return parent's platform data, or NULL if none
290 void *dev_get_parent_platdata(const struct udevice *dev);
293 * dev_get_uclass_platdata() - Get the uclass platform data for a device
295 * This checks that dev is not NULL, but no other checks for now
297 * @dev Device to check
298 * @return uclass's platform data, or NULL if none
300 void *dev_get_uclass_platdata(const struct udevice *dev);
303 * dev_get_priv() - Get the private data for a device
305 * This checks that dev is not NULL, but no other checks for now
307 * @dev Device to check
308 * @return private data, or NULL if none
310 void *dev_get_priv(const struct udevice *dev);
313 * dev_get_parent_priv() - Get the parent private data for a device
315 * The parent private data is data stored in the device but owned by the
316 * parent. For example, a USB device may have parent data which contains
317 * information about how to talk to the device over USB.
319 * This checks that dev is not NULL, but no other checks for now
321 * @dev Device to check
322 * @return parent data, or NULL if none
324 void *dev_get_parent_priv(const struct udevice *dev);
327 * dev_get_uclass_priv() - Get the private uclass data for a device
329 * This checks that dev is not NULL, but no other checks for now
331 * @dev Device to check
332 * @return private uclass data for this device, or NULL if none
334 void *dev_get_uclass_priv(const struct udevice *dev);
337 * struct dev_get_parent() - Get the parent of a device
339 * @child: Child to check
340 * @return parent of child, or NULL if this is the root device
342 struct udevice *dev_get_parent(const struct udevice *child);
345 * dev_get_driver_data() - get the driver data used to bind a device
347 * When a device is bound using a device tree node, it matches a
348 * particular compatible string in struct udevice_id. This function
349 * returns the associated data value for that compatible string. This is
350 * the 'data' field in struct udevice_id.
352 * As an example, consider this structure:
353 * static const struct udevice_id tegra_i2c_ids[] = {
354 * { .compatible = "nvidia,tegra114-i2c", .data = TYPE_114 },
355 * { .compatible = "nvidia,tegra20-i2c", .data = TYPE_STD },
356 * { .compatible = "nvidia,tegra20-i2c-dvc", .data = TYPE_DVC },
360 * When driver model finds a driver for this it will store the 'data' value
361 * corresponding to the compatible string it matches. This function returns
362 * that value. This allows the driver to handle several variants of a device.
364 * For USB devices, this is the driver_info field in struct usb_device_id.
366 * @dev: Device to check
367 * @return driver data (0 if none is provided)
369 ulong dev_get_driver_data(const struct udevice *dev);
372 * dev_get_driver_ops() - get the device's driver's operations
374 * This checks that dev is not NULL, and returns the pointer to device's
375 * driver's operations.
377 * @dev: Device to check
378 * @return void pointer to driver's operations or NULL for NULL-dev or NULL-ops
380 const void *dev_get_driver_ops(const struct udevice *dev);
383 * device_get_uclass_id() - return the uclass ID of a device
385 * @dev: Device to check
386 * @return uclass ID for the device
388 enum uclass_id device_get_uclass_id(const struct udevice *dev);
391 * dev_get_uclass_name() - return the uclass name of a device
393 * This checks that dev is not NULL.
395 * @dev: Device to check
396 * @return pointer to the uclass name for the device
398 const char *dev_get_uclass_name(const struct udevice *dev);
401 * device_get_child() - Get the child of a device by index
403 * Returns the numbered child, 0 being the first. This does not use
404 * sequence numbers, only the natural order.
406 * @dev: Parent device to check
407 * @index: Child index
408 * @devp: Returns pointer to device
409 * @return 0 if OK, -ENODEV if no such device, other error if the device fails
412 int device_get_child(const struct udevice *parent, int index,
413 struct udevice **devp);
416 * device_get_child_count() - Get the available child count of a device
418 * Returns the number of children to a device.
420 * @parent: Parent device to check
422 int device_get_child_count(const struct udevice *parent);
425 * device_find_child_by_seq() - Find a child device based on a sequence
427 * This searches for a device with the given seq or req_seq.
429 * For seq, if an active device has this sequence it will be returned.
430 * If there is no such device then this will return -ENODEV.
432 * For req_seq, if a device (whether activated or not) has this req_seq
433 * value, that device will be returned. This is a strong indication that
434 * the device will receive that sequence when activated.
436 * @parent: Parent device
437 * @seq_or_req_seq: Sequence number to find (0=first)
438 * @find_req_seq: true to find req_seq, false to find seq
439 * @devp: Returns pointer to device (there is only one per for each seq).
440 * Set to NULL if none is found
441 * @return 0 if OK, -ve on error
443 int device_find_child_by_seq(const struct udevice *parent, int seq_or_req_seq,
444 bool find_req_seq, struct udevice **devp);
447 * device_get_child_by_seq() - Get a child device based on a sequence
449 * If an active device has this sequence it will be returned. If there is no
450 * such device then this will check for a device that is requesting this
453 * The device is probed to activate it ready for use.
455 * @parent: Parent device
456 * @seq: Sequence number to find (0=first)
457 * @devp: Returns pointer to device (there is only one per for each seq)
458 * Set to NULL if none is found
459 * @return 0 if OK, -ve on error
461 int device_get_child_by_seq(const struct udevice *parent, int seq,
462 struct udevice **devp);
465 * device_find_child_by_of_offset() - Find a child device based on FDT offset
467 * Locates a child device by its device tree offset.
469 * @parent: Parent device
470 * @of_offset: Device tree offset to find
471 * @devp: Returns pointer to device if found, otherwise this is set to NULL
472 * @return 0 if OK, -ve on error
474 int device_find_child_by_of_offset(const struct udevice *parent, int of_offset,
475 struct udevice **devp);
478 * device_get_child_by_of_offset() - Get a child device based on FDT offset
480 * Locates a child device by its device tree offset.
482 * The device is probed to activate it ready for use.
484 * @parent: Parent device
485 * @of_offset: Device tree offset to find
486 * @devp: Returns pointer to device if found, otherwise this is set to NULL
487 * @return 0 if OK, -ve on error
489 int device_get_child_by_of_offset(const struct udevice *parent, int of_offset,
490 struct udevice **devp);
493 * device_find_global_by_ofnode() - Get a device based on ofnode
495 * Locates a device by its device tree ofnode, searching globally throughout
496 * the all driver model devices.
498 * The device is NOT probed
500 * @node: Device tree ofnode to find
501 * @devp: Returns pointer to device if found, otherwise this is set to NULL
502 * @return 0 if OK, -ve on error
505 int device_find_global_by_ofnode(ofnode node, struct udevice **devp);
508 * device_get_global_by_ofnode() - Get a device based on ofnode
510 * Locates a device by its device tree ofnode, searching globally throughout
511 * the all driver model devices.
513 * The device is probed to activate it ready for use.
515 * @node: Device tree ofnode to find
516 * @devp: Returns pointer to device if found, otherwise this is set to NULL
517 * @return 0 if OK, -ve on error
519 int device_get_global_by_ofnode(ofnode node, struct udevice **devp);
522 * device_find_first_child() - Find the first child of a device
524 * @parent: Parent device to search
525 * @devp: Returns first child device, or NULL if none
528 int device_find_first_child(const struct udevice *parent,
529 struct udevice **devp);
532 * device_find_next_child() - Find the next child of a device
534 * @devp: Pointer to previous child device on entry. Returns pointer to next
535 * child device, or NULL if none
538 int device_find_next_child(struct udevice **devp);
541 * device_find_first_inactive_child() - Find the first inactive child
543 * This is used to locate an existing child of a device which is of a given
546 * The device is NOT probed
548 * @parent: Parent device to search
549 * @uclass_id: Uclass to look for
550 * @devp: Returns device found, if any
551 * @return 0 if found, else -ENODEV
553 int device_find_first_inactive_child(const struct udevice *parent,
554 enum uclass_id uclass_id,
555 struct udevice **devp);
558 * device_find_first_child_by_uclass() - Find the first child of a device in uc
560 * @parent: Parent device to search
561 * @uclass_id: Uclass to look for
562 * @devp: Returns first child device in that uclass, if any
563 * @return 0 if found, else -ENODEV
565 int device_find_first_child_by_uclass(const struct udevice *parent,
566 enum uclass_id uclass_id,
567 struct udevice **devp);
570 * device_find_child_by_name() - Find a child by device name
572 * @parent: Parent device to search
573 * @name: Name to look for
574 * @devp: Returns device found, if any
575 * @return 0 if found, else -ENODEV
577 int device_find_child_by_name(const struct udevice *parent, const char *name,
578 struct udevice **devp);
581 * device_first_child_ofdata_err() - Find the first child and reads its platdata
583 * The ofdata_to_platdata() method is called on the child before it is returned,
584 * but the child is not probed.
586 * @parent: Parent to check
587 * @devp: Returns child that was found, if any
588 * @return 0 on success, -ENODEV if no children, other -ve on error
590 int device_first_child_ofdata_err(struct udevice *parent,
591 struct udevice **devp);
594 * device_next_child_ofdata_err() - Find the next child and read its platdata
596 * The ofdata_to_platdata() method is called on the child before it is returned,
597 * but the child is not probed.
599 * @devp: On entry, points to the previous child; on exit returns the child that
601 * @return 0 on success, -ENODEV if no children, other -ve on error
603 int device_next_child_ofdata_err(struct udevice **devp);
606 * device_first_child_err() - Get the first child of a device
608 * The device returned is probed if necessary, and ready for use
610 * @parent: Parent device to search
611 * @devp: Returns device found, if any
612 * @return 0 if found, -ENODEV if not, -ve error if device failed to probe
614 int device_first_child_err(struct udevice *parent, struct udevice **devp);
617 * device_next_child_err() - Get the next child of a parent device
619 * The device returned is probed if necessary, and ready for use
621 * @devp: On entry, pointer to device to lookup. On exit, returns pointer
622 * to the next sibling if no error occurred
623 * @return 0 if found, -ENODEV if not, -ve error if device failed to probe
625 int device_next_child_err(struct udevice **devp);
628 * device_has_children() - check if a device has any children
630 * @dev: Device to check
631 * @return true if the device has one or more children
633 bool device_has_children(const struct udevice *dev);
636 * device_has_active_children() - check if a device has any active children
638 * @dev: Device to check
639 * @return true if the device has one or more children and at least one of
640 * them is active (probed).
642 bool device_has_active_children(const struct udevice *dev);
645 * device_is_last_sibling() - check if a device is the last sibling
647 * This function can be useful for display purposes, when special action needs
648 * to be taken when displaying the last sibling. This can happen when a tree
649 * view of devices is being displayed.
651 * @dev: Device to check
652 * @return true if there are no more siblings after this one - i.e. is it
655 bool device_is_last_sibling(const struct udevice *dev);
658 * device_set_name() - set the name of a device
660 * This must be called in the device's bind() method and no later. Normally
661 * this is unnecessary but for probed devices which don't get a useful name
662 * this function can be helpful.
664 * The name is allocated and will be freed automatically when the device is
667 * @dev: Device to update
668 * @name: New name (this string is allocated new memory and attached to
670 * @return 0 if OK, -ENOMEM if there is not enough memory to allocate the
673 int device_set_name(struct udevice *dev, const char *name);
676 * device_set_name_alloced() - note that a device name is allocated
678 * This sets the DM_FLAG_NAME_ALLOCED flag for the device, so that when it is
679 * unbound the name will be freed. This avoids memory leaks.
681 * @dev: Device to update
683 void device_set_name_alloced(struct udevice *dev);
686 * device_is_compatible() - check if the device is compatible with the compat
688 * This allows to check whether the device is comaptible with the compat.
690 * @dev: udevice pointer for which compatible needs to be verified.
691 * @compat: Compatible string which needs to verified in the given
693 * @return true if OK, false if the compatible is not found
695 bool device_is_compatible(const struct udevice *dev, const char *compat);
698 * of_machine_is_compatible() - check if the machine is compatible with
701 * This allows to check whether the machine is comaptible with the compat.
703 * @compat: Compatible string which needs to verified
704 * @return true if OK, false if the compatible is not found
706 bool of_machine_is_compatible(const char *compat);
709 * dev_disable_by_path() - Disable a device given its device tree path
711 * @path: The device tree path identifying the device to be disabled
712 * @return 0 on success, -ve on error
714 int dev_disable_by_path(const char *path);
717 * dev_enable_by_path() - Enable a device given its device tree path
719 * @path: The device tree path identifying the device to be enabled
720 * @return 0 on success, -ve on error
722 int dev_enable_by_path(const char *path);
725 * device_is_on_pci_bus - Test if a device is on a PCI bus
727 * @dev: device to test
728 * @return: true if it is on a PCI bus, false otherwise
730 static inline bool device_is_on_pci_bus(const struct udevice *dev)
732 return device_get_uclass_id(dev->parent) == UCLASS_PCI;
736 * device_foreach_child_safe() - iterate through child devices safely
738 * This allows the @pos child to be removed in the loop if required.
740 * @pos: struct udevice * for the current device
741 * @next: struct udevice * for the next device
742 * @parent: parent device to scan
744 #define device_foreach_child_safe(pos, next, parent) \
745 list_for_each_entry_safe(pos, next, &parent->child_head, sibling_node)
748 * device_foreach_child() - iterate through child devices
750 * @pos: struct udevice * for the current device
751 * @parent: parent device to scan
753 #define device_foreach_child(pos, parent) \
754 list_for_each_entry(pos, &parent->child_head, sibling_node)
757 * device_foreach_child_ofdata_to_platdata() - iterate through children
759 * This stops when it gets an error, with @pos set to the device that failed to
762 * This creates a for() loop which works through the available children of
763 * a device in order from start to end. Device ofdata is read by calling
764 * device_ofdata_to_platdata() on each one. The devices are not probed.
766 * @pos: struct udevice * for the current device
767 * @parent: parent device to scan
769 #define device_foreach_child_ofdata_to_platdata(pos, parent) \
770 for (int _ret = device_first_child_ofdata_err(parent, &dev); !_ret; \
771 _ret = device_next_child_ofdata_err(&dev))
774 * device_foreach_child_probe() - iterate through children, probing them
776 * This creates a for() loop which works through the available children of
777 * a device in order from start to end. Devices are probed if necessary,
780 * This stops when it gets an error, with @pos set to the device that failed to
783 * @pos: struct udevice * for the current device
784 * @parent: parent device to scan
786 #define device_foreach_child_probe(pos, parent) \
787 for (int _ret = device_first_child_err(parent, &dev); !_ret; \
788 _ret = device_next_child_err(&dev))
791 * dm_scan_fdt_dev() - Bind child device in a the device tree
793 * This handles device which have sub-nodes in the device tree. It scans all
794 * sub-nodes and binds drivers for each node where a driver can be found.
796 * If this is called prior to relocation, only pre-relocation devices will be
797 * bound (those marked with u-boot,dm-pre-reloc in the device tree, or where
798 * the driver has the DM_FLAG_PRE_RELOC flag set). Otherwise, all devices will
801 * @dev: Device to scan
802 * @return 0 if OK, -ve on error
804 int dm_scan_fdt_dev(struct udevice *dev);
806 #include <dm/devres.h>
810 * remove the following after resolving conflicts with <linux/compat.h>
830 * print device name like Linux
832 #define dev_printk(dev, fmt, ...) \
834 printk(fmt, ##__VA_ARGS__); \
837 #define __dev_printk(level, dev, fmt, ...) \
839 if (level < CONFIG_VAL(LOGLEVEL)) \
840 dev_printk(dev, fmt, ##__VA_ARGS__); \
843 #define dev_emerg(dev, fmt, ...) \
844 __dev_printk(0, dev, fmt, ##__VA_ARGS__)
845 #define dev_alert(dev, fmt, ...) \
846 __dev_printk(1, dev, fmt, ##__VA_ARGS__)
847 #define dev_crit(dev, fmt, ...) \
848 __dev_printk(2, dev, fmt, ##__VA_ARGS__)
849 #define dev_err(dev, fmt, ...) \
850 __dev_printk(3, dev, fmt, ##__VA_ARGS__)
851 #define dev_warn(dev, fmt, ...) \
852 __dev_printk(4, dev, fmt, ##__VA_ARGS__)
853 #define dev_notice(dev, fmt, ...) \
854 __dev_printk(5, dev, fmt, ##__VA_ARGS__)
855 #define dev_info(dev, fmt, ...) \
856 __dev_printk(6, dev, fmt, ##__VA_ARGS__)
859 #define dev_dbg(dev, fmt, ...) \
860 __dev_printk(7, dev, fmt, ##__VA_ARGS__)
862 #define dev_dbg(dev, fmt, ...) \
865 __dev_printk(7, dev, fmt, ##__VA_ARGS__); \
870 #define dev_vdbg dev_dbg
872 #define dev_vdbg(dev, fmt, ...) \
875 __dev_printk(7, dev, fmt, ##__VA_ARGS__); \