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Diffstat (limited to 'include/dm/device.h')
| -rw-r--r-- | include/dm/device.h | 1045 |
1 files changed, 0 insertions, 1045 deletions
diff --git a/include/dm/device.h b/include/dm/device.h deleted file mode 100644 index d7ad9d6..0000000 --- a/include/dm/device.h +++ /dev/null @@ -1,1045 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0+ */ -/* - * Copyright (c) 2013 Google, Inc - * - * (C) Copyright 2012 - * Pavel Herrmann <morpheus.ibis@gmail.com> - * Marek Vasut <marex@denx.de> - */ - -#ifndef _DM_DEVICE_H -#define _DM_DEVICE_H - -#include <dm/ofnode.h> -#include <dm/uclass-id.h> -#include <fdtdec.h> -#include <linker_lists.h> -#include <linux/compat.h> -#include <linux/kernel.h> -#include <linux/list.h> -#include <linux/printk.h> - -struct driver_info; - -/* Driver is active (probed). Cleared when it is removed */ -#define DM_FLAG_ACTIVATED (1 << 0) - -/* DM is responsible for allocating and freeing platdata */ -#define DM_FLAG_ALLOC_PDATA (1 << 1) - -/* DM should init this device prior to relocation */ -#define DM_FLAG_PRE_RELOC (1 << 2) - -/* DM is responsible for allocating and freeing parent_platdata */ -#define DM_FLAG_ALLOC_PARENT_PDATA (1 << 3) - -/* DM is responsible for allocating and freeing uclass_platdata */ -#define DM_FLAG_ALLOC_UCLASS_PDATA (1 << 4) - -/* Allocate driver private data on a DMA boundary */ -#define DM_FLAG_ALLOC_PRIV_DMA (1 << 5) - -/* Device is bound */ -#define DM_FLAG_BOUND (1 << 6) - -/* Device name is allocated and should be freed on unbind() */ -#define DM_FLAG_NAME_ALLOCED (1 << 7) - -#define DM_FLAG_OF_PLATDATA (1 << 8) - -/* - * Call driver remove function to stop currently active DMA transfers or - * give DMA buffers back to the HW / controller. This may be needed for - * some drivers to do some final stage cleanup before the OS is called - * (U-Boot exit) - */ -#define DM_FLAG_ACTIVE_DMA (1 << 9) - -/* - * Call driver remove function to do some final configuration, before - * U-Boot exits and the OS is started - */ -#define DM_FLAG_OS_PREPARE (1 << 10) - -/* DM does not enable/disable the power domains corresponding to this device */ -#define DM_FLAG_DEFAULT_PD_CTRL_OFF (1 << 11) - -/* - * One or multiple of these flags are passed to device_remove() so that - * a selective device removal as specified by the remove-stage and the - * driver flags can be done. - */ -enum { - /* Normal remove, remove all devices */ - DM_REMOVE_NORMAL = 1 << 0, - - /* Remove devices with active DMA */ - DM_REMOVE_ACTIVE_DMA = DM_FLAG_ACTIVE_DMA, - - /* Remove devices which need some final OS preparation steps */ - DM_REMOVE_OS_PREPARE = DM_FLAG_OS_PREPARE, - - /* Add more use cases here */ - - /* Remove devices with any active flag */ - DM_REMOVE_ACTIVE_ALL = DM_REMOVE_ACTIVE_DMA | DM_REMOVE_OS_PREPARE, -}; - -/** - * struct udevice - An instance of a driver - * - * This holds information about a device, which is a driver bound to a - * particular port or peripheral (essentially a driver instance). - * - * A device will come into existence through a 'bind' call, either due to - * a U_BOOT_DEVICE() macro (in which case platdata is non-NULL) or a node - * in the device tree (in which case of_offset is >= 0). In the latter case - * we translate the device tree information into platdata in a function - * implemented by the driver ofdata_to_platdata method (called just before the - * probe method if the device has a device tree node. - * - * All three of platdata, priv and uclass_priv can be allocated by the - * driver, or you can use the auto_alloc_size members of struct driver and - * struct uclass_driver to have driver model do this automatically. - * - * @driver: The driver used by this device - * @name: Name of device, typically the FDT node name - * @platdata: Configuration data for this device - * @parent_platdata: The parent bus's configuration data for this device - * @uclass_platdata: The uclass's configuration data for this device - * @node: Reference to device tree node for this device - * @driver_data: Driver data word for the entry that matched this device with - * its driver - * @parent: Parent of this device, or NULL for the top level device - * @priv: Private data for this device - * @uclass: Pointer to uclass for this device - * @uclass_priv: The uclass's private data for this device - * @parent_priv: The parent's private data for this device - * @uclass_node: Used by uclass to link its devices - * @child_head: List of children of this device - * @sibling_node: Next device in list of all devices - * @flags: Flags for this device DM_FLAG_... - * @req_seq: Requested sequence number for this device (-1 = any) - * @seq: Allocated sequence number for this device (-1 = none). This is set up - * when the device is probed and will be unique within the device's uclass. - * @devres_head: List of memory allocations associated with this device. - * When CONFIG_DEVRES is enabled, devm_kmalloc() and friends will - * add to this list. Memory so-allocated will be freed - * automatically when the device is removed / unbound - */ -struct udevice { - const struct driver *driver; - const char *name; - void *platdata; - void *parent_platdata; - void *uclass_platdata; - ofnode node; - ulong driver_data; - struct udevice *parent; - void *priv; - struct uclass *uclass; - void *uclass_priv; - void *parent_priv; - struct list_head uclass_node; - struct list_head child_head; - struct list_head sibling_node; - uint32_t flags; - int req_seq; - int seq; -#ifdef CONFIG_DEVRES - struct list_head devres_head; -#endif -}; - -/* Maximum sequence number supported */ -#define DM_MAX_SEQ 999 - -/* Returns the operations for a device */ -#define device_get_ops(dev) (dev->driver->ops) - -/* Returns non-zero if the device is active (probed and not removed) */ -#define device_active(dev) ((dev)->flags & DM_FLAG_ACTIVATED) - -static inline int dev_of_offset(const struct udevice *dev) -{ - return ofnode_to_offset(dev->node); -} - -static inline void dev_set_of_offset(struct udevice *dev, int of_offset) -{ - dev->node = offset_to_ofnode(of_offset); -} - -static inline bool dev_has_of_node(struct udevice *dev) -{ - return ofnode_valid(dev->node); -} - -/** - * struct udevice_id - Lists the compatible strings supported by a driver - * @compatible: Compatible string - * @data: Data for this compatible string - */ -struct udevice_id { - const char *compatible; - ulong data; -}; - -#if CONFIG_IS_ENABLED(OF_CONTROL) -#define of_match_ptr(_ptr) (_ptr) -#else -#define of_match_ptr(_ptr) NULL -#endif /* CONFIG_IS_ENABLED(OF_CONTROL) */ - -/** - * struct driver - A driver for a feature or peripheral - * - * This holds methods for setting up a new device, and also removing it. - * The device needs information to set itself up - this is provided either - * by platdata or a device tree node (which we find by looking up - * matching compatible strings with of_match). - * - * Drivers all belong to a uclass, representing a class of devices of the - * same type. Common elements of the drivers can be implemented in the uclass, - * or the uclass can provide a consistent interface to the drivers within - * it. - * - * @name: Device name - * @id: Identifies the uclass we belong to - * @of_match: List of compatible strings to match, and any identifying data - * for each. - * @bind: Called to bind a device to its driver - * @probe: Called to probe a device, i.e. activate it - * @remove: Called to remove a device, i.e. de-activate it - * @unbind: Called to unbind a device from its driver - * @ofdata_to_platdata: Called before probe to decode device tree data - * @child_post_bind: Called after a new child has been bound - * @child_pre_probe: Called before a child device is probed. The device has - * memory allocated but it has not yet been probed. - * @child_post_remove: Called after a child device is removed. The device - * has memory allocated but its device_remove() method has been called. - * @priv_auto_alloc_size: If non-zero this is the size of the private data - * to be allocated in the device's ->priv pointer. If zero, then the driver - * is responsible for allocating any data required. - * @platdata_auto_alloc_size: If non-zero this is the size of the - * platform data to be allocated in the device's ->platdata pointer. - * This is typically only useful for device-tree-aware drivers (those with - * an of_match), since drivers which use platdata will have the data - * provided in the U_BOOT_DEVICE() instantiation. - * @per_child_auto_alloc_size: Each device can hold private data owned by - * its parent. If required this will be automatically allocated if this - * value is non-zero. - * @per_child_platdata_auto_alloc_size: A bus likes to store information about - * its children. If non-zero this is the size of this data, to be allocated - * in the child's parent_platdata pointer. - * @ops: Driver-specific operations. This is typically a list of function - * pointers defined by the driver, to implement driver functions required by - * the uclass. - * @flags: driver flags - see DM_FLAGS_... - */ -struct driver { - char *name; - enum uclass_id id; - const struct udevice_id *of_match; - int (*bind)(struct udevice *dev); - int (*probe)(struct udevice *dev); - int (*remove)(struct udevice *dev); - int (*unbind)(struct udevice *dev); - int (*ofdata_to_platdata)(struct udevice *dev); - int (*child_post_bind)(struct udevice *dev); - int (*child_pre_probe)(struct udevice *dev); - int (*child_post_remove)(struct udevice *dev); - int priv_auto_alloc_size; - int platdata_auto_alloc_size; - int per_child_auto_alloc_size; - int per_child_platdata_auto_alloc_size; - const void *ops; /* driver-specific operations */ - uint32_t flags; -}; - -/* Declare a new U-Boot driver */ -#define U_BOOT_DRIVER(__name) \ - ll_entry_declare(struct driver, __name, driver) - -/* Get a pointer to a given driver */ -#define DM_GET_DRIVER(__name) \ - ll_entry_get(struct driver, __name, driver) - -/** - * dev_get_platdata() - Get the platform data for a device - * - * This checks that dev is not NULL, but no other checks for now - * - * @dev Device to check - * @return platform data, or NULL if none - */ -void *dev_get_platdata(const struct udevice *dev); - -/** - * dev_get_parent_platdata() - Get the parent platform data for a device - * - * This checks that dev is not NULL, but no other checks for now - * - * @dev Device to check - * @return parent's platform data, or NULL if none - */ -void *dev_get_parent_platdata(const struct udevice *dev); - -/** - * dev_get_uclass_platdata() - Get the uclass platform data for a device - * - * This checks that dev is not NULL, but no other checks for now - * - * @dev Device to check - * @return uclass's platform data, or NULL if none - */ -void *dev_get_uclass_platdata(const struct udevice *dev); - -/** - * dev_get_priv() - Get the private data for a device - * - * This checks that dev is not NULL, but no other checks for now - * - * @dev Device to check - * @return private data, or NULL if none - */ -void *dev_get_priv(const struct udevice *dev); - -/** - * dev_get_parent_priv() - Get the parent private data for a device - * - * The parent private data is data stored in the device but owned by the - * parent. For example, a USB device may have parent data which contains - * information about how to talk to the device over USB. - * - * This checks that dev is not NULL, but no other checks for now - * - * @dev Device to check - * @return parent data, or NULL if none - */ -void *dev_get_parent_priv(const struct udevice *dev); - -/** - * dev_get_uclass_priv() - Get the private uclass data for a device - * - * This checks that dev is not NULL, but no other checks for now - * - * @dev Device to check - * @return private uclass data for this device, or NULL if none - */ -void *dev_get_uclass_priv(const struct udevice *dev); - -/** - * struct dev_get_parent() - Get the parent of a device - * - * @child: Child to check - * @return parent of child, or NULL if this is the root device - */ -struct udevice *dev_get_parent(const struct udevice *child); - -/** - * dev_get_driver_data() - get the driver data used to bind a device - * - * When a device is bound using a device tree node, it matches a - * particular compatible string in struct udevice_id. This function - * returns the associated data value for that compatible string. This is - * the 'data' field in struct udevice_id. - * - * As an example, consider this structure: - * static const struct udevice_id tegra_i2c_ids[] = { - * { .compatible = "nvidia,tegra114-i2c", .data = TYPE_114 }, - * { .compatible = "nvidia,tegra20-i2c", .data = TYPE_STD }, - * { .compatible = "nvidia,tegra20-i2c-dvc", .data = TYPE_DVC }, - * { } - * }; - * - * When driver model finds a driver for this it will store the 'data' value - * corresponding to the compatible string it matches. This function returns - * that value. This allows the driver to handle several variants of a device. - * - * For USB devices, this is the driver_info field in struct usb_device_id. - * - * @dev: Device to check - * @return driver data (0 if none is provided) - */ -ulong dev_get_driver_data(const struct udevice *dev); - -/** - * dev_get_driver_ops() - get the device's driver's operations - * - * This checks that dev is not NULL, and returns the pointer to device's - * driver's operations. - * - * @dev: Device to check - * @return void pointer to driver's operations or NULL for NULL-dev or NULL-ops - */ -const void *dev_get_driver_ops(const struct udevice *dev); - -/** - * device_get_uclass_id() - return the uclass ID of a device - * - * @dev: Device to check - * @return uclass ID for the device - */ -enum uclass_id device_get_uclass_id(const struct udevice *dev); - -/** - * dev_get_uclass_name() - return the uclass name of a device - * - * This checks that dev is not NULL. - * - * @dev: Device to check - * @return pointer to the uclass name for the device - */ -const char *dev_get_uclass_name(const struct udevice *dev); - -/** - * device_get_child() - Get the child of a device by index - * - * Returns the numbered child, 0 being the first. This does not use - * sequence numbers, only the natural order. - * - * @dev: Parent device to check - * @index: Child index - * @devp: Returns pointer to device - * @return 0 if OK, -ENODEV if no such device, other error if the device fails - * to probe - */ -int device_get_child(struct udevice *parent, int index, struct udevice **devp); - -/** - * device_get_child_count() - Get the available child count of a device - * - * Returns the number of children to a device. - * - * @parent: Parent device to check - */ -int device_get_child_count(struct udevice *parent); - -/** - * device_find_child_by_seq() - Find a child device based on a sequence - * - * This searches for a device with the given seq or req_seq. - * - * For seq, if an active device has this sequence it will be returned. - * If there is no such device then this will return -ENODEV. - * - * For req_seq, if a device (whether activated or not) has this req_seq - * value, that device will be returned. This is a strong indication that - * the device will receive that sequence when activated. - * - * @parent: Parent device - * @seq_or_req_seq: Sequence number to find (0=first) - * @find_req_seq: true to find req_seq, false to find seq - * @devp: Returns pointer to device (there is only one per for each seq). - * Set to NULL if none is found - * @return 0 if OK, -ve on error - */ -int device_find_child_by_seq(struct udevice *parent, int seq_or_req_seq, - bool find_req_seq, struct udevice **devp); - -/** - * device_get_child_by_seq() - Get a child device based on a sequence - * - * If an active device has this sequence it will be returned. If there is no - * such device then this will check for a device that is requesting this - * sequence. - * - * The device is probed to activate it ready for use. - * - * @parent: Parent device - * @seq: Sequence number to find (0=first) - * @devp: Returns pointer to device (there is only one per for each seq) - * Set to NULL if none is found - * @return 0 if OK, -ve on error - */ -int device_get_child_by_seq(struct udevice *parent, int seq, - struct udevice **devp); - -/** - * device_find_child_by_of_offset() - Find a child device based on FDT offset - * - * Locates a child device by its device tree offset. - * - * @parent: Parent device - * @of_offset: Device tree offset to find - * @devp: Returns pointer to device if found, otherwise this is set to NULL - * @return 0 if OK, -ve on error - */ -int device_find_child_by_of_offset(struct udevice *parent, int of_offset, - struct udevice **devp); - -/** - * device_get_child_by_of_offset() - Get a child device based on FDT offset - * - * Locates a child device by its device tree offset. - * - * The device is probed to activate it ready for use. - * - * @parent: Parent device - * @of_offset: Device tree offset to find - * @devp: Returns pointer to device if found, otherwise this is set to NULL - * @return 0 if OK, -ve on error - */ -int device_get_child_by_of_offset(struct udevice *parent, int of_offset, - struct udevice **devp); - -/** - * device_find_global_by_ofnode() - Get a device based on ofnode - * - * Locates a device by its device tree ofnode, searching globally throughout - * the all driver model devices. - * - * The device is NOT probed - * - * @node: Device tree ofnode to find - * @devp: Returns pointer to device if found, otherwise this is set to NULL - * @return 0 if OK, -ve on error - */ - -int device_find_global_by_ofnode(ofnode node, struct udevice **devp); - -/** - * device_get_global_by_ofnode() - Get a device based on ofnode - * - * Locates a device by its device tree ofnode, searching globally throughout - * the all driver model devices. - * - * The device is probed to activate it ready for use. - * - * @node: Device tree ofnode to find - * @devp: Returns pointer to device if found, otherwise this is set to NULL - * @return 0 if OK, -ve on error - */ -int device_get_global_by_ofnode(ofnode node, struct udevice **devp); - -/** - * device_find_first_child() - Find the first child of a device - * - * @parent: Parent device to search - * @devp: Returns first child device, or NULL if none - * @return 0 - */ -int device_find_first_child(struct udevice *parent, struct udevice **devp); - -/** - * device_find_next_child() - Find the next child of a device - * - * @devp: Pointer to previous child device on entry. Returns pointer to next - * child device, or NULL if none - * @return 0 - */ -int device_find_next_child(struct udevice **devp); - -/** - * device_find_first_inactive_child() - Find the first inactive child - * - * This is used to locate an existing child of a device which is of a given - * uclass. - * - * The device is NOT probed - * - * @parent: Parent device to search - * @uclass_id: Uclass to look for - * @devp: Returns device found, if any - * @return 0 if found, else -ENODEV - */ -int device_find_first_inactive_child(struct udevice *parent, - enum uclass_id uclass_id, - struct udevice **devp); - -/** - * device_find_first_child_by_uclass() - Find the first child of a device in uc - * - * @parent: Parent device to search - * @uclass_id: Uclass to look for - * @devp: Returns first child device in that uclass, if any - * @return 0 if found, else -ENODEV - */ -int device_find_first_child_by_uclass(struct udevice *parent, - enum uclass_id uclass_id, - struct udevice **devp); - -/** - * device_find_child_by_name() - Find a child by device name - * - * @parent: Parent device to search - * @name: Name to look for - * @devp: Returns device found, if any - * @return 0 if found, else -ENODEV - */ -int device_find_child_by_name(struct udevice *parent, const char *name, - struct udevice **devp); - -/** - * device_has_children() - check if a device has any children - * - * @dev: Device to check - * @return true if the device has one or more children - */ -bool device_has_children(const struct udevice *dev); - -/** - * device_has_active_children() - check if a device has any active children - * - * @dev: Device to check - * @return true if the device has one or more children and at least one of - * them is active (probed). - */ -bool device_has_active_children(struct udevice *dev); - -/** - * device_is_last_sibling() - check if a device is the last sibling - * - * This function can be useful for display purposes, when special action needs - * to be taken when displaying the last sibling. This can happen when a tree - * view of devices is being displayed. - * - * @dev: Device to check - * @return true if there are no more siblings after this one - i.e. is it - * last in the list. - */ -bool device_is_last_sibling(struct udevice *dev); - -/** - * device_set_name() - set the name of a device - * - * This must be called in the device's bind() method and no later. Normally - * this is unnecessary but for probed devices which don't get a useful name - * this function can be helpful. - * - * The name is allocated and will be freed automatically when the device is - * unbound. - * - * @dev: Device to update - * @name: New name (this string is allocated new memory and attached to - * the device) - * @return 0 if OK, -ENOMEM if there is not enough memory to allocate the - * string - */ -int device_set_name(struct udevice *dev, const char *name); - -/** - * device_set_name_alloced() - note that a device name is allocated - * - * This sets the DM_FLAG_NAME_ALLOCED flag for the device, so that when it is - * unbound the name will be freed. This avoids memory leaks. - * - * @dev: Device to update - */ -void device_set_name_alloced(struct udevice *dev); - -/** - * device_is_compatible() - check if the device is compatible with the compat - * - * This allows to check whether the device is comaptible with the compat. - * - * @dev: udevice pointer for which compatible needs to be verified. - * @compat: Compatible string which needs to verified in the given - * device - * @return true if OK, false if the compatible is not found - */ -bool device_is_compatible(struct udevice *dev, const char *compat); - -/** - * of_machine_is_compatible() - check if the machine is compatible with - * the compat - * - * This allows to check whether the machine is comaptible with the compat. - * - * @compat: Compatible string which needs to verified - * @return true if OK, false if the compatible is not found - */ -bool of_machine_is_compatible(const char *compat); - -/** - * dev_disable_by_path() - Disable a device given its device tree path - * - * @path: The device tree path identifying the device to be disabled - * @return 0 on success, -ve on error - */ -int dev_disable_by_path(const char *path); - -/** - * dev_enable_by_path() - Enable a device given its device tree path - * - * @path: The device tree path identifying the device to be enabled - * @return 0 on success, -ve on error - */ -int dev_enable_by_path(const char *path); - -/** - * device_is_on_pci_bus - Test if a device is on a PCI bus - * - * @dev: device to test - * @return: true if it is on a PCI bus, false otherwise - */ -static inline bool device_is_on_pci_bus(struct udevice *dev) -{ - return device_get_uclass_id(dev->parent) == UCLASS_PCI; -} - -/** - * device_foreach_child_safe() - iterate through child devices safely - * - * This allows the @pos child to be removed in the loop if required. - * - * @pos: struct udevice * for the current device - * @next: struct udevice * for the next device - * @parent: parent device to scan - */ -#define device_foreach_child_safe(pos, next, parent) \ - list_for_each_entry_safe(pos, next, &parent->child_head, sibling_node) - -/** - * device_foreach_child() - iterate through child devices - * - * @pos: struct udevice * for the current device - * @parent: parent device to scan - */ -#define device_foreach_child(pos, parent) \ - list_for_each_entry(pos, &parent->child_head, sibling_node) - -/** - * dm_scan_fdt_dev() - Bind child device in a the device tree - * - * This handles device which have sub-nodes in the device tree. It scans all - * sub-nodes and binds drivers for each node where a driver can be found. - * - * If this is called prior to relocation, only pre-relocation devices will be - * bound (those marked with u-boot,dm-pre-reloc in the device tree, or where - * the driver has the DM_FLAG_PRE_RELOC flag set). Otherwise, all devices will - * be bound. - * - * @dev: Device to scan - * @return 0 if OK, -ve on error - */ -int dm_scan_fdt_dev(struct udevice *dev); - -/* device resource management */ -typedef void (*dr_release_t)(struct udevice *dev, void *res); -typedef int (*dr_match_t)(struct udevice *dev, void *res, void *match_data); - -#ifdef CONFIG_DEVRES - -#ifdef CONFIG_DEBUG_DEVRES -void *__devres_alloc(dr_release_t release, size_t size, gfp_t gfp, - const char *name); -#define _devres_alloc(release, size, gfp) \ - __devres_alloc(release, size, gfp, #release) -#else -void *_devres_alloc(dr_release_t release, size_t size, gfp_t gfp); -#endif - -/** - * devres_alloc() - Allocate device resource data - * @release: Release function devres will be associated with - * @size: Allocation size - * @gfp: Allocation flags - * - * Allocate devres of @size bytes. The allocated area is associated - * with @release. The returned pointer can be passed to - * other devres_*() functions. - * - * RETURNS: - * Pointer to allocated devres on success, NULL on failure. - */ -#define devres_alloc(release, size, gfp) \ - _devres_alloc(release, size, gfp | __GFP_ZERO) - -/** - * devres_free() - Free device resource data - * @res: Pointer to devres data to free - * - * Free devres created with devres_alloc(). - */ -void devres_free(void *res); - -/** - * devres_add() - Register device resource - * @dev: Device to add resource to - * @res: Resource to register - * - * Register devres @res to @dev. @res should have been allocated - * using devres_alloc(). On driver detach, the associated release - * function will be invoked and devres will be freed automatically. - */ -void devres_add(struct udevice *dev, void *res); - -/** - * devres_find() - Find device resource - * @dev: Device to lookup resource from - * @release: Look for resources associated with this release function - * @match: Match function (optional) - * @match_data: Data for the match function - * - * Find the latest devres of @dev which is associated with @release - * and for which @match returns 1. If @match is NULL, it's considered - * to match all. - * - * @return pointer to found devres, NULL if not found. - */ -void *devres_find(struct udevice *dev, dr_release_t release, - dr_match_t match, void *match_data); - -/** - * devres_get() - Find devres, if non-existent, add one atomically - * @dev: Device to lookup or add devres for - * @new_res: Pointer to new initialized devres to add if not found - * @match: Match function (optional) - * @match_data: Data for the match function - * - * Find the latest devres of @dev which has the same release function - * as @new_res and for which @match return 1. If found, @new_res is - * freed; otherwise, @new_res is added atomically. - * - * @return ointer to found or added devres. - */ -void *devres_get(struct udevice *dev, void *new_res, - dr_match_t match, void *match_data); - -/** - * devres_remove() - Find a device resource and remove it - * @dev: Device to find resource from - * @release: Look for resources associated with this release function - * @match: Match function (optional) - * @match_data: Data for the match function - * - * Find the latest devres of @dev associated with @release and for - * which @match returns 1. If @match is NULL, it's considered to - * match all. If found, the resource is removed atomically and - * returned. - * - * @return ointer to removed devres on success, NULL if not found. - */ -void *devres_remove(struct udevice *dev, dr_release_t release, - dr_match_t match, void *match_data); - -/** - * devres_destroy() - Find a device resource and destroy it - * @dev: Device to find resource from - * @release: Look for resources associated with this release function - * @match: Match function (optional) - * @match_data: Data for the match function - * - * Find the latest devres of @dev associated with @release and for - * which @match returns 1. If @match is NULL, it's considered to - * match all. If found, the resource is removed atomically and freed. - * - * Note that the release function for the resource will not be called, - * only the devres-allocated data will be freed. The caller becomes - * responsible for freeing any other data. - * - * @return 0 if devres is found and freed, -ENOENT if not found. - */ -int devres_destroy(struct udevice *dev, dr_release_t release, - dr_match_t match, void *match_data); - -/** - * devres_release() - Find a device resource and destroy it, calling release - * @dev: Device to find resource from - * @release: Look for resources associated with this release function - * @match: Match function (optional) - * @match_data: Data for the match function - * - * Find the latest devres of @dev associated with @release and for - * which @match returns 1. If @match is NULL, it's considered to - * match all. If found, the resource is removed atomically, the - * release function called and the resource freed. - * - * @return 0 if devres is found and freed, -ENOENT if not found. - */ -int devres_release(struct udevice *dev, dr_release_t release, - dr_match_t match, void *match_data); - -/* managed devm_k.alloc/kfree for device drivers */ -/** - * devm_kmalloc() - Resource-managed kmalloc - * @dev: Device to allocate memory for - * @size: Allocation size - * @gfp: Allocation gfp flags - * - * Managed kmalloc. Memory allocated with this function is - * automatically freed on driver detach. Like all other devres - * resources, guaranteed alignment is unsigned long long. - * - * @return pointer to allocated memory on success, NULL on failure. - */ -void *devm_kmalloc(struct udevice *dev, size_t size, gfp_t gfp); -static inline void *devm_kzalloc(struct udevice *dev, size_t size, gfp_t gfp) -{ - return devm_kmalloc(dev, size, gfp | __GFP_ZERO); -} -static inline void *devm_kmalloc_array(struct udevice *dev, - size_t n, size_t size, gfp_t flags) -{ - if (size != 0 && n > SIZE_MAX / size) - return NULL; - return devm_kmalloc(dev, n * size, flags); -} -static inline void *devm_kcalloc(struct udevice *dev, - size_t n, size_t size, gfp_t flags) -{ - return devm_kmalloc_array(dev, n, size, flags | __GFP_ZERO); -} - -/** - * devm_kfree() - Resource-managed kfree - * @dev: Device this memory belongs to - * @ptr: Memory to free - * - * Free memory allocated with devm_kmalloc(). - */ -void devm_kfree(struct udevice *dev, void *ptr); - -#else /* ! CONFIG_DEVRES */ - -static inline void *devres_alloc(dr_release_t release, size_t size, gfp_t gfp) -{ - return kzalloc(size, gfp); -} - -static inline void devres_free(void *res) -{ - kfree(res); -} - -static inline void devres_add(struct udevice *dev, void *res) -{ -} - -static inline void *devres_find(struct udevice *dev, dr_release_t release, - dr_match_t match, void *match_data) -{ - return NULL; -} - -static inline void *devres_get(struct udevice *dev, void *new_res, - dr_match_t match, void *match_data) -{ - return NULL; -} - -static inline void *devres_remove(struct udevice *dev, dr_release_t release, - dr_match_t match, void *match_data) -{ - return NULL; -} - -static inline int devres_destroy(struct udevice *dev, dr_release_t release, - dr_match_t match, void *match_data) -{ - return 0; -} - -static inline int devres_release(struct udevice *dev, dr_release_t release, - dr_match_t match, void *match_data) -{ - return 0; -} - -static inline void *devm_kmalloc(struct udevice *dev, size_t size, gfp_t gfp) -{ - return kmalloc(size, gfp); -} - -static inline void *devm_kzalloc(struct udevice *dev, size_t size, gfp_t gfp) -{ - return kzalloc(size, gfp); -} - -static inline void *devm_kmalloc_array(struct udevice *dev, - size_t n, size_t size, gfp_t flags) -{ - /* TODO: add kmalloc_array() to linux/compat.h */ - if (size != 0 && n > SIZE_MAX / size) - return NULL; - return kmalloc(n * size, flags); -} - -static inline void *devm_kcalloc(struct udevice *dev, - size_t n, size_t size, gfp_t flags) -{ - /* TODO: add kcalloc() to linux/compat.h */ - return kmalloc(n * size, flags | __GFP_ZERO); -} - -static inline void devm_kfree(struct udevice *dev, void *ptr) -{ - kfree(ptr); -} - -#endif /* ! CONFIG_DEVRES */ - -/* - * REVISIT: - * remove the following after resolving conflicts with <linux/compat.h> - */ -#ifdef dev_dbg -#undef dev_dbg -#endif -#ifdef dev_vdbg -#undef dev_vdbg -#endif -#ifdef dev_info -#undef dev_info -#endif -#ifdef dev_err -#undef dev_err -#endif -#ifdef dev_warn -#undef dev_warn -#endif - -/* - * REVISIT: - * print device name like Linux - */ -#define dev_printk(dev, fmt, ...) \ -({ \ - printk(fmt, ##__VA_ARGS__); \ -}) - -#define __dev_printk(level, dev, fmt, ...) \ -({ \ - if (level < CONFIG_VAL(LOGLEVEL)) \ - dev_printk(dev, fmt, ##__VA_ARGS__); \ -}) - -#define dev_emerg(dev, fmt, ...) \ - __dev_printk(0, dev, fmt, ##__VA_ARGS__) -#define dev_alert(dev, fmt, ...) \ - __dev_printk(1, dev, fmt, ##__VA_ARGS__) -#define dev_crit(dev, fmt, ...) \ - __dev_printk(2, dev, fmt, ##__VA_ARGS__) -#define dev_err(dev, fmt, ...) \ - __dev_printk(3, dev, fmt, ##__VA_ARGS__) -#define dev_warn(dev, fmt, ...) \ - __dev_printk(4, dev, fmt, ##__VA_ARGS__) -#define dev_notice(dev, fmt, ...) \ - __dev_printk(5, dev, fmt, ##__VA_ARGS__) -#define dev_info(dev, fmt, ...) \ - __dev_printk(6, dev, fmt, ##__VA_ARGS__) - -#ifdef DEBUG -#define dev_dbg(dev, fmt, ...) \ - __dev_printk(7, dev, fmt, ##__VA_ARGS__) -#else -#define dev_dbg(dev, fmt, ...) \ -({ \ - if (0) \ - __dev_printk(7, dev, fmt, ##__VA_ARGS__); \ -}) -#endif - -#ifdef VERBOSE_DEBUG -#define dev_vdbg dev_dbg -#else -#define dev_vdbg(dev, fmt, ...) \ -({ \ - if (0) \ - __dev_printk(7, dev, fmt, ##__VA_ARGS__); \ -}) -#endif - -#endif |