diff options
Diffstat (limited to 'include/dm/device.h')
| -rw-r--r-- | include/dm/device.h | 97 |
1 files changed, 91 insertions, 6 deletions
diff --git a/include/dm/device.h b/include/dm/device.h index 7a48eb8..18296bb 100644 --- a/include/dm/device.h +++ b/include/dm/device.h @@ -30,6 +30,12 @@ struct driver_info; /* 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) + /** * struct udevice - An instance of a driver * @@ -51,8 +57,10 @@ struct driver_info; * @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 * @of_offset: Device tree node offset for this device (- for none) - * @of_id: Pointer to the udevice_id structure which created the 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 @@ -67,12 +75,13 @@ struct driver_info; * when the device is probed and will be unique within the device's uclass. */ struct udevice { - struct driver *driver; + const struct driver *driver; const char *name; void *platdata; void *parent_platdata; + void *uclass_platdata; int of_offset; - const struct udevice_id *of_id; + ulong driver_data; struct udevice *parent; void *priv; struct uclass *uclass; @@ -206,6 +215,16 @@ void *dev_get_platdata(struct udevice *dev); void *dev_get_parent_platdata(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(struct udevice *dev); + +/** * dev_get_parentdata() - Get the parent data for a device * * The parent data is data stored in the device but owned by the parent. @@ -238,13 +257,39 @@ void *dev_get_priv(struct udevice *dev); struct udevice *dev_get_parent(struct udevice *child); /** - * dev_get_of_data() - get the device tree data used to bind a device + * 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(struct udevice *dev); + +/** + * 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 as in struct udevice_id. This function - * returns the associated data value for that compatible string + * returns the associated data value for that compatible string. This is + * the 'data' field in struct udevice_id. + * + * For USB devices, this is the driver_info field in struct usb_device_id. + * + * @dev: Device to check */ -ulong dev_get_of_data(struct udevice *dev); +ulong dev_get_driver_data(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(struct udevice *dev); /* * device_get_uclass_id() - return the uclass ID of a device @@ -254,6 +299,16 @@ ulong dev_get_of_data(struct udevice *dev); */ enum uclass_id device_get_uclass_id(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(struct udevice *dev); + /** * device_get_child() - Get the child of a device by index * @@ -361,4 +416,34 @@ int device_find_next_child(struct udevice **devp); */ fdt_addr_t dev_get_addr(struct udevice *dev); +/** + * 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(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); + #endif |