185f812c41
Sphinx expects Return: and not @return to indicate a return value.
find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
335 lines
10 KiB
C
335 lines
10 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* Copyright (c) 2013 Google, Inc
|
|
*
|
|
* (C) Copyright 2012
|
|
* Pavel Herrmann <morpheus.ibis@gmail.com>
|
|
*/
|
|
|
|
#ifndef _DM_UCLASS_INTERNAL_H
|
|
#define _DM_UCLASS_INTERNAL_H
|
|
|
|
#include <dm/ofnode.h>
|
|
|
|
/*
|
|
* These next two macros DM_UCLASS_INST() and DM_UCLASS_REF() are only allowed
|
|
* in code generated by dtoc, because the ordering is important and if other
|
|
* instances creep in then they may mess up the ordering expected by dtoc.
|
|
*
|
|
* It is OK to use them with 'extern' though, since that does not actually
|
|
* add a new record to the linker_list.
|
|
*/
|
|
|
|
/**
|
|
* DM_UCLASS_INST() - Declare a uclass ready for run-time use
|
|
*
|
|
* This adds an actual struct uclass to a list which is found by driver model
|
|
* on start-up.
|
|
*
|
|
* For example:
|
|
*
|
|
* DM_UCLASS_INST(clk) = {
|
|
* .uc_drv = DM_UCLASS_DRIVER_REF(clk),
|
|
* ...
|
|
* };
|
|
*
|
|
* @_name: Name of the uclass. This must be a valid C identifier, used by the
|
|
* linker_list.
|
|
*/
|
|
#define DM_UCLASS_INST(_name) \
|
|
ll_entry_declare(struct uclass, _name, uclass)
|
|
|
|
/**
|
|
* DM_UCLASS_REF() - Get a reference to a uclass
|
|
*
|
|
* This is useful for referencing a uclass at build time. Before this is used,
|
|
* an extern DM_UCLASS_INST() must have been declared.
|
|
*
|
|
* For example:
|
|
*
|
|
* extern DM_UCLASS_INST(clk);
|
|
*
|
|
* struct uclass *ucs[] = {
|
|
* DM_UCLASS_REF(clk),
|
|
* }
|
|
*
|
|
* @_name: Name of the uclass. This must be a valid C identifier, used by the
|
|
* linker_list
|
|
* @returns struct uclass * for the device
|
|
*/
|
|
#define DM_UCLASS_REF(_name) \
|
|
ll_entry_ref(struct uclass, _name, uclass)
|
|
|
|
/**
|
|
* uclass_set_priv() - Set the private data for a uclass
|
|
*
|
|
* This is normally handled by driver model, which automatically allocates
|
|
* private data when an 'auto' size if provided by the uclass driver.
|
|
*
|
|
* Use this function to override normal operation for special situations, such
|
|
* as needing to allocate a variable amount of data.
|
|
*
|
|
* If OF_PLATDATA_RT is enabled, this function cannot be used out of core driver
|
|
* model code, since the pointer must be within the gd->dm_priv_base region.
|
|
*
|
|
* @uc Uclass to update
|
|
* @priv New private-data pointer
|
|
*/
|
|
void uclass_set_priv(struct uclass *uc, void *priv);
|
|
|
|
/**
|
|
* uclass_find_next_free_seq() - Get the next free sequence number
|
|
*
|
|
* This returns the next free sequence number. This is useful only if
|
|
* OF_CONTROL is not used. The next free sequence number is simply the
|
|
* maximum sequence number used by all devices in the uclass + 1. The value
|
|
* returned is always greater than the largest alias, if DM_SEQ_ALIAS is enabled
|
|
* and the uclass has the DM_UC_FLAG_SEQ_ALIAS flag.
|
|
*
|
|
* This allows assigning the sequence number in the binding order.
|
|
*
|
|
* @uc: uclass to check
|
|
* Return: The next free sequence number
|
|
*/
|
|
int uclass_find_next_free_seq(struct uclass *uc);
|
|
|
|
/**
|
|
* uclass_get_device_tail() - handle the end of a get_device call
|
|
*
|
|
* This handles returning an error or probing a device as needed.
|
|
*
|
|
* @dev: Device that needs to be probed
|
|
* @ret: Error to return. If non-zero then the device is not probed
|
|
* @devp: Returns the value of 'dev' if there is no error
|
|
* Return: ret, if non-zero, else the result of the device_probe() call
|
|
*/
|
|
int uclass_get_device_tail(struct udevice *dev, int ret, struct udevice **devp);
|
|
|
|
/**
|
|
* dev_get_uclass_index() - Get uclass and index of device
|
|
* @dev: - in - Device that we want the uclass/index of
|
|
* @ucp: - out - A pointer to the uclass the device belongs to
|
|
*
|
|
* The device is not prepared for use - this is an internal function.
|
|
*
|
|
* Return: the index of the device in the uclass list or -ENODEV if not found.
|
|
*/
|
|
int dev_get_uclass_index(struct udevice *dev, struct uclass **ucp);
|
|
|
|
/**
|
|
* uclass_find_device() - Return n-th child of uclass
|
|
* @id: Id number of the uclass
|
|
* @index: Position of the child in uclass's list
|
|
* #devp: Returns pointer to device, or NULL on error
|
|
*
|
|
* The device is not prepared for use - this is an internal function.
|
|
* The function uclass_get_device_tail() can be used to probe the device.
|
|
*
|
|
* Return: the uclass pointer of a child at the given index or
|
|
* return NULL on error.
|
|
*/
|
|
int uclass_find_device(enum uclass_id id, int index, struct udevice **devp);
|
|
|
|
/**
|
|
* uclass_find_first_device() - Return the first device in a uclass
|
|
* @id: Id number of the uclass
|
|
* #devp: Returns pointer to device, or NULL on error
|
|
*
|
|
* The device is not prepared for use - this is an internal function.
|
|
* The function uclass_get_device_tail() can be used to probe the device.
|
|
*
|
|
* Return: 0 if OK (found or not found), -ve on error
|
|
*/
|
|
int uclass_find_first_device(enum uclass_id id, struct udevice **devp);
|
|
|
|
/**
|
|
* uclass_find_next_device() - Return the next device in a uclass
|
|
* @devp: On entry, pointer to device to lookup. On exit, returns pointer
|
|
* to the next device in the same uclass, or NULL if none
|
|
*
|
|
* The device is not prepared for use - this is an internal function.
|
|
* The function uclass_get_device_tail() can be used to probe the device.
|
|
*
|
|
* Return: 0 if OK (found or not found), -ve on error
|
|
*/
|
|
int uclass_find_next_device(struct udevice **devp);
|
|
|
|
/**
|
|
* uclass_find_device_by_name() - Find uclass device based on ID and name
|
|
*
|
|
* This searches for a device with the exactly given name.
|
|
*
|
|
* The device is NOT probed, it is merely returned.
|
|
*
|
|
* @id: ID to look up
|
|
* @name: name of a device to find
|
|
* @devp: Returns pointer to device (the first one with the name)
|
|
* Return: 0 if OK, -ve on error
|
|
*/
|
|
int uclass_find_device_by_name(enum uclass_id id, const char *name,
|
|
struct udevice **devp);
|
|
|
|
/**
|
|
* uclass_find_device_by_seq() - Find uclass device based on ID and sequence
|
|
*
|
|
* This searches for a device with the given seq.
|
|
*
|
|
* The device is NOT probed, it is merely returned.
|
|
*
|
|
* @id: ID to look up
|
|
* @seq: Sequence number to find (0=first)
|
|
* @devp: Returns pointer to device (there is only one per for each seq)
|
|
* Return: 0 if OK, -ENODEV if not found
|
|
*/
|
|
int uclass_find_device_by_seq(enum uclass_id id, int seq,
|
|
struct udevice **devp);
|
|
|
|
/**
|
|
* uclass_find_device_by_of_offset() - Find a uclass device by device tree node
|
|
*
|
|
* This searches the devices in the uclass for one attached to the given
|
|
* device tree node.
|
|
*
|
|
* The device is NOT probed, it is merely returned.
|
|
*
|
|
* @id: ID to look up
|
|
* @node: Device tree offset to search for (if -ve then -ENODEV is returned)
|
|
* @devp: Returns pointer to device (there is only one for each node)
|
|
* Return: 0 if OK, -ve on error
|
|
*/
|
|
int uclass_find_device_by_of_offset(enum uclass_id id, int node,
|
|
struct udevice **devp);
|
|
|
|
/**
|
|
* uclass_find_device_by_of_node() - Find a uclass device by device tree node
|
|
*
|
|
* This searches the devices in the uclass for one attached to the given
|
|
* device tree node.
|
|
*
|
|
* The device is NOT probed, it is merely returned.
|
|
*
|
|
* @id: ID to look up
|
|
* @node: Device tree offset to search for (if NULL then -ENODEV is returned)
|
|
* @devp: Returns pointer to device (there is only one for each node)
|
|
* Return: 0 if OK, -ve on error
|
|
*/
|
|
int uclass_find_device_by_ofnode(enum uclass_id id, ofnode node,
|
|
struct udevice **devp);
|
|
|
|
/**
|
|
* uclass_find_device_by_phandle() - Find a uclass device by phandle
|
|
*
|
|
* This searches the devices in the uclass for one with the given phandle.
|
|
*
|
|
* The device is NOT probed, it is merely returned.
|
|
*
|
|
* @id: ID to look up
|
|
* @parent: Parent device containing the phandle pointer
|
|
* @name: Name of property in the parent device node
|
|
* @devp: Returns pointer to device (there is only one for each node)
|
|
* Return: 0 if OK, -ENOENT if there is no @name present in the node, other
|
|
* -ve on error
|
|
*/
|
|
int uclass_find_device_by_phandle(enum uclass_id id, struct udevice *parent,
|
|
const char *name, struct udevice **devp);
|
|
|
|
/**
|
|
* uclass_bind_device() - Associate device with a uclass
|
|
*
|
|
* Connect the device into uclass's list of devices.
|
|
*
|
|
* @dev: Pointer to the device
|
|
* #return 0 on success, -ve on error
|
|
*/
|
|
int uclass_bind_device(struct udevice *dev);
|
|
|
|
#if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)
|
|
/**
|
|
* uclass_pre_unbind_device() - Prepare to deassociate device with a uclass
|
|
*
|
|
* Call any handled needed before uclass_unbind_device() is called
|
|
*
|
|
* @dev: Pointer to the device
|
|
* #return 0 on success, -ve on error
|
|
*/
|
|
int uclass_pre_unbind_device(struct udevice *dev);
|
|
|
|
/**
|
|
* uclass_unbind_device() - Deassociate device with a uclass
|
|
*
|
|
* Disconnect the device from uclass's list of devices.
|
|
*
|
|
* @dev: Pointer to the device
|
|
* #return 0 on success, -ve on error
|
|
*/
|
|
int uclass_unbind_device(struct udevice *dev);
|
|
|
|
#else
|
|
static inline int uclass_pre_unbind_device(struct udevice *dev) { return 0; }
|
|
static inline int uclass_unbind_device(struct udevice *dev) { return 0; }
|
|
#endif
|
|
|
|
/**
|
|
* uclass_pre_probe_device() - Deal with a device that is about to be probed
|
|
*
|
|
* Perform any pre-processing that is needed by the uclass before it can be
|
|
* probed. This includes the uclass' pre-probe() method and the parent
|
|
* uclass' child_pre_probe() method.
|
|
*
|
|
* @dev: Pointer to the device
|
|
* #return 0 on success, -ve on error
|
|
*/
|
|
int uclass_pre_probe_device(struct udevice *dev);
|
|
|
|
/**
|
|
* uclass_post_probe_device() - Deal with a device that has just been probed
|
|
*
|
|
* Perform any post-processing of a probed device that is needed by the
|
|
* uclass.
|
|
*
|
|
* @dev: Pointer to the device
|
|
* #return 0 on success, -ve on error
|
|
*/
|
|
int uclass_post_probe_device(struct udevice *dev);
|
|
|
|
/**
|
|
* uclass_pre_remove_device() - Handle a device which is about to be removed
|
|
*
|
|
* Perform any pre-processing of a device that is about to be removed.
|
|
*
|
|
* @dev: Pointer to the device
|
|
* #return 0 on success, -ve on error
|
|
*/
|
|
#if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)
|
|
int uclass_pre_remove_device(struct udevice *dev);
|
|
#else
|
|
static inline int uclass_pre_remove_device(struct udevice *dev) { return 0; }
|
|
#endif
|
|
|
|
/**
|
|
* uclass_get_count() - Get the number of uclasses
|
|
*
|
|
* Returns the number of uclasses instantiated in driver model
|
|
*/
|
|
int uclass_get_count(void);
|
|
|
|
/**
|
|
* uclass_find() - Find uclass by its id
|
|
*
|
|
* @id: Id to serach for
|
|
* Return: pointer to uclass, or NULL if not found
|
|
*/
|
|
struct uclass *uclass_find(enum uclass_id key);
|
|
|
|
/**
|
|
* uclass_destroy() - Destroy a uclass
|
|
*
|
|
* Destroy a uclass and all its devices
|
|
*
|
|
* @uc: uclass to destroy
|
|
* Return: 0 on success, -ve on error
|
|
*/
|
|
int uclass_destroy(struct uclass *uc);
|
|
|
|
#endif
|