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dm: core: Use const where possible in device.h

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Update this header file to use const devices where possible, to permit
callers to also use const.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2020-01-27 08:49:36 -07:00
parent f5cc89a82a
commit fc347fbdd4
3 changed files with 32 additions and 29 deletions
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27
drivers/core/device.c
View File

@ -591,7 +591,8 @@ static int device_find_by_ofnode(ofnode node, struct udevice **devp)
}
#endif
int device_get_child(struct udevice *parent, int index, struct udevice **devp)
int device_get_child(const struct udevice *parent, int index,
struct udevice **devp)
{
struct udevice *dev;
@ -603,7 +604,7 @@ int device_get_child(struct udevice *parent, int index, struct udevice **devp)
return -ENODEV;
}
int device_get_child_count(struct udevice *parent)
int device_get_child_count(const struct udevice *parent)
{
struct udevice *dev;
int count = 0;
@ -614,7 +615,7 @@ int device_get_child_count(struct udevice *parent)
return count;
}
int device_find_child_by_seq(struct udevice *parent, int seq_or_req_seq,
int device_find_child_by_seq(const struct udevice *parent, int seq_or_req_seq,
bool find_req_seq, struct udevice **devp)
{
struct udevice *dev;
@ -634,7 +635,7 @@ int device_find_child_by_seq(struct udevice *parent, int seq_or_req_seq,
return -ENODEV;
}
int device_get_child_by_seq(struct udevice *parent, int seq,
int device_get_child_by_seq(const struct udevice *parent, int seq,
struct udevice **devp)
{
struct udevice *dev;
@ -652,7 +653,7 @@ int device_get_child_by_seq(struct udevice *parent, int seq,
return device_get_device_tail(dev, ret, devp);
}
int device_find_child_by_of_offset(struct udevice *parent, int of_offset,
int device_find_child_by_of_offset(const struct udevice *parent, int of_offset,
struct udevice **devp)
{
struct udevice *dev;
@ -669,7 +670,7 @@ int device_find_child_by_of_offset(struct udevice *parent, int of_offset,
return -ENODEV;
}
int device_get_child_by_of_offset(struct udevice *parent, int node,
int device_get_child_by_of_offset(const struct udevice *parent, int node,
struct udevice **devp)
{
struct udevice *dev;
@ -712,7 +713,7 @@ int device_get_global_by_ofnode(ofnode ofnode, struct udevice **devp)
return device_get_device_tail(dev, dev ? 0 : -ENOENT, devp);
}
int device_find_first_child(struct udevice *parent, struct udevice **devp)
int device_find_first_child(const struct udevice *parent, struct udevice **devp)
{
if (list_empty(&parent->child_head)) {
*devp = NULL;
@ -739,7 +740,7 @@ int device_find_next_child(struct udevice **devp)
return 0;
}
int device_find_first_inactive_child(struct udevice *parent,
int device_find_first_inactive_child(const struct udevice *parent,
enum uclass_id uclass_id,
struct udevice **devp)
{
@ -757,7 +758,7 @@ int device_find_first_inactive_child(struct udevice *parent,
return -ENODEV;
}
int device_find_first_child_by_uclass(struct udevice *parent,
int device_find_first_child_by_uclass(const struct udevice *parent,
enum uclass_id uclass_id,
struct udevice **devp)
{
@ -774,7 +775,7 @@ int device_find_first_child_by_uclass(struct udevice *parent,
return -ENODEV;
}
int device_find_child_by_name(struct udevice *parent, const char *name,
int device_find_child_by_name(const struct udevice *parent, const char *name,
struct udevice **devp)
{
struct udevice *dev;
@ -827,7 +828,7 @@ bool device_has_children(const struct udevice *dev)
return !list_empty(&dev->child_head);
}
bool device_has_active_children(struct udevice *dev)
bool device_has_active_children(const struct udevice *dev)
{
struct udevice *child;
@ -841,7 +842,7 @@ bool device_has_active_children(struct udevice *dev)
return false;
}
bool device_is_last_sibling(struct udevice *dev)
bool device_is_last_sibling(const struct udevice *dev)
{
struct udevice *parent = dev->parent;
@ -867,7 +868,7 @@ int device_set_name(struct udevice *dev, const char *name)
}
#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
bool device_is_compatible(struct udevice *dev, const char *compat)
bool device_is_compatible(const struct udevice *dev, const char *compat)
{
return ofnode_device_is_compatible(dev_ofnode(dev), compat);
}

30
include/dm/device.h
View File

@ -409,7 +409,8 @@ const char *dev_get_uclass_name(const struct udevice *dev);
* @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);
int device_get_child(const struct udevice *parent, int index,
struct udevice **devp);
/**
* device_get_child_count() - Get the available child count of a device
@ -418,7 +419,7 @@ int device_get_child(struct udevice *parent, int index, struct udevice **devp);
*
* @parent: Parent device to check
*/
int device_get_child_count(struct udevice *parent);
int device_get_child_count(const struct udevice *parent);
/**
* device_find_child_by_seq() - Find a child device based on a sequence
@ -439,7 +440,7 @@ int device_get_child_count(struct udevice *parent);
* 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,
int device_find_child_by_seq(const struct udevice *parent, int seq_or_req_seq,
bool find_req_seq, struct udevice **devp);
/**
@ -457,7 +458,7 @@ int device_find_child_by_seq(struct udevice *parent, int seq_or_req_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,
int device_get_child_by_seq(const struct udevice *parent, int seq,
struct udevice **devp);
/**
@ -470,7 +471,7 @@ int device_get_child_by_seq(struct udevice *parent, int seq,
* @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,
int device_find_child_by_of_offset(const struct udevice *parent, int of_offset,
struct udevice **devp);
/**
@ -485,7 +486,7 @@ int device_find_child_by_of_offset(struct udevice *parent, int of_offset,
* @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,
int device_get_child_by_of_offset(const struct udevice *parent, int of_offset,
struct udevice **devp);
/**
@ -524,7 +525,8 @@ int device_get_global_by_ofnode(ofnode node, struct udevice **devp);
* @devp: Returns first child device, or NULL if none
* @return 0
*/
int device_find_first_child(struct udevice *parent, struct udevice **devp);
int device_find_first_child(const struct udevice *parent,
struct udevice **devp);
/**
* device_find_next_child() - Find the next child of a device
@ -548,7 +550,7 @@ int device_find_next_child(struct udevice **devp);
* @devp: Returns device found, if any
* @return 0 if found, else -ENODEV
*/
int device_find_first_inactive_child(struct udevice *parent,
int device_find_first_inactive_child(const struct udevice *parent,
enum uclass_id uclass_id,
struct udevice **devp);
@ -560,7 +562,7 @@ int device_find_first_inactive_child(struct udevice *parent,
* @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,
int device_find_first_child_by_uclass(const struct udevice *parent,
enum uclass_id uclass_id,
struct udevice **devp);
@ -572,7 +574,7 @@ int device_find_first_child_by_uclass(struct udevice *parent,
* @devp: Returns device found, if any
* @return 0 if found, else -ENODEV
*/
int device_find_child_by_name(struct udevice *parent, const char *name,
int device_find_child_by_name(const struct udevice *parent, const char *name,
struct udevice **devp);
/**
@ -590,7 +592,7 @@ bool device_has_children(const struct udevice *dev);
* @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);
bool device_has_active_children(const struct udevice *dev);
/**
* device_is_last_sibling() - check if a device is the last sibling
@ -603,7 +605,7 @@ bool device_has_active_children(struct udevice *dev);
* @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);
bool device_is_last_sibling(const struct udevice *dev);
/**
* device_set_name() - set the name of a device
@ -643,7 +645,7 @@ void device_set_name_alloced(struct udevice *dev);
* device
* @return true if OK, false if the compatible is not found
*/
bool device_is_compatible(struct udevice *dev, const char *compat);
bool device_is_compatible(const struct udevice *dev, const char *compat);
/**
* of_machine_is_compatible() - check if the machine is compatible with
@ -678,7 +680,7 @@ int dev_enable_by_path(const char *path);
* @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)
static inline bool device_is_on_pci_bus(const struct udevice *dev)
{
return device_get_uclass_id(dev->parent) == UCLASS_PCI;
}

4
include/dm/read.h
View File

@ -33,12 +33,12 @@ static inline const struct device_node *dev_np(struct udevice *dev)
* @dev: device to check
* @return reference of the the device's DT node
*/
static inline ofnode dev_ofnode(struct udevice *dev)
static inline ofnode dev_ofnode(const struct udevice *dev)
{
return dev->node;
}
static inline bool dev_of_valid(struct udevice *dev)
static inline bool dev_of_valid(const struct udevice *dev)
{
return ofnode_valid(dev_ofnode(dev));
}