1 /* 2 * Copyright (C) 2013 Google, Inc 3 * 4 * (C) Copyright 2012 5 * Pavel Herrmann <morpheus.ibis@gmail.com> 6 * Marek Vasut <marex@denx.de> 7 * 8 * SPDX-License-Identifier: GPL-2.0+ 9 */ 10 11 #ifndef _DM_DEVICE_INTERNAL_H 12 #define _DM_DEVICE_INTERNAL_H 13 14 struct device; 15 16 /** 17 * device_bind() - Create a device and bind it to a driver 18 * 19 * Called to set up a new device attached to a driver. The device will either 20 * have platdata, or a device tree node which can be used to create the 21 * platdata. 22 * 23 * Once bound a device exists but is not yet active until device_probe() is 24 * called. 25 * 26 * @parent: Pointer to device's parent, under which this driver will exist 27 * @drv: Device's driver 28 * @name: Name of device (e.g. device tree node name) 29 * @platdata: Pointer to data for this device - the structure is device- 30 * specific but may include the device's I/O address, etc.. This is NULL for 31 * devices which use device tree. 32 * @of_offset: Offset of device tree node for this device. This is -1 for 33 * devices which don't use device tree. 34 * @devp: Returns a pointer to the bound device 35 * @return 0 if OK, -ve on error 36 */ 37 int device_bind(struct device *parent, struct driver *drv, 38 const char *name, void *platdata, int of_offset, 39 struct device **devp); 40 41 /** 42 * device_bind_by_name: Create a device and bind it to a driver 43 * 44 * This is a helper function used to bind devices which do not use device 45 * tree. 46 * 47 * @parent: Pointer to device's parent 48 * @info: Name and platdata for this device 49 * @devp: Returns a pointer to the bound device 50 * @return 0 if OK, -ve on error 51 */ 52 int device_bind_by_name(struct device *parent, const struct driver_info *info, 53 struct device **devp); 54 55 /** 56 * device_probe() - Probe a device, activating it 57 * 58 * Activate a device so that it is ready for use. All its parents are probed 59 * first. 60 * 61 * @dev: Pointer to device to probe 62 * @return 0 if OK, -ve on error 63 */ 64 int device_probe(struct device *dev); 65 66 /** 67 * device_remove() - Remove a device, de-activating it 68 * 69 * De-activate a device so that it is no longer ready for use. All its 70 * children are deactivated first. 71 * 72 * @dev: Pointer to device to remove 73 * @return 0 if OK, -ve on error (an error here is normally a very bad thing) 74 */ 75 int device_remove(struct device *dev); 76 77 /** 78 * device_unbind() - Unbind a device, destroying it 79 * 80 * Unbind a device and remove all memory used by it 81 * 82 * @dev: Pointer to device to unbind 83 * @return 0 if OK, -ve on error 84 */ 85 int device_unbind(struct device *dev); 86 87 #endif 88