[people/ms/u-boot.git] / drivers / core / uclass.c

/*
 * Copyright (c) 2013 Google, Inc
 *
 * (C) Copyright 2012
 * Pavel Herrmann <morpheus.ibis@gmail.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <errno.h>
#include <malloc.h>
#include <dm/device.h>
#include <dm/device-internal.h>
#include <dm/lists.h>
#include <dm/uclass.h>
#include <dm/uclass-internal.h>
#include <dm/util.h>

DECLARE_GLOBAL_DATA_PTR;

struct uclass *uclass_find(enum uclass_id key)
{
	struct uclass *uc;

	if (!gd->dm_root)
		return NULL;
	/*
	 * TODO(sjg@chromium.org): Optimise this, perhaps moving the found
	 * node to the start of the list, or creating a linear array mapping
	 * id to node.
	 */
	list_for_each_entry(uc, &gd->uclass_root, sibling_node) {
		if (uc->uc_drv->id == key)
			return uc;
	}

	return NULL;
}

/**
 * uclass_add() - Create new uclass in list
 * @id: Id number to create
 * @ucp: Returns pointer to uclass, or NULL on error
 * @return 0 on success, -ve on error
 *
 * The new uclass is added to the list. There must be only one uclass for
 * each id.
 */
static int uclass_add(enum uclass_id id, struct uclass **ucp)
{
	struct uclass_driver *uc_drv;
	struct uclass *uc;
	int ret;

	*ucp = NULL;
	uc_drv = lists_uclass_lookup(id);
	if (!uc_drv) {
		debug("Cannot find uclass for id %d: please add the UCLASS_DRIVER() declaration for this UCLASS_... id\n",
		      id);
		return -ENOENT;
	}
	uc = calloc(1, sizeof(*uc));
	if (!uc)
		return -ENOMEM;
	if (uc_drv->priv_auto_alloc_size) {
		uc->priv = calloc(1, uc_drv->priv_auto_alloc_size);
		if (!uc->priv) {
			ret = -ENOMEM;
			goto fail_mem;
		}
	}
	uc->uc_drv = uc_drv;
	INIT_LIST_HEAD(&uc->sibling_node);
	INIT_LIST_HEAD(&uc->dev_head);
	list_add(&uc->sibling_node, &DM_UCLASS_ROOT_NON_CONST);

	if (uc_drv->init) {
		ret = uc_drv->init(uc);
		if (ret)
			goto fail;
	}

	*ucp = uc;

	return 0;
fail:
	if (uc_drv->priv_auto_alloc_size) {
		free(uc->priv);
		uc->priv = NULL;
	}
	list_del(&uc->sibling_node);
fail_mem:
	free(uc);

	return ret;
}

int uclass_destroy(struct uclass *uc)
{
	struct uclass_driver *uc_drv;
	struct udevice *dev;
	int ret;

	/*
	 * We cannot use list_for_each_entry_safe() here. If a device in this
	 * uclass has a child device also in this uclass, it will be also be
	 * unbound (by the recursion in the call to device_unbind() below).
	 * We can loop until the list is empty.
	 */
	while (!list_empty(&uc->dev_head)) {
		dev = list_first_entry(&uc->dev_head, struct udevice,
				       uclass_node);
		ret = device_remove(dev);
		if (ret)
			return ret;
		ret = device_unbind(dev);
		if (ret)
			return ret;
	}

	uc_drv = uc->uc_drv;
	if (uc_drv->destroy)
		uc_drv->destroy(uc);
	list_del(&uc->sibling_node);
	if (uc_drv->priv_auto_alloc_size)
		free(uc->priv);
	free(uc);

	return 0;
}

int uclass_get(enum uclass_id id, struct uclass **ucp)
{
	struct uclass *uc;

	*ucp = NULL;
	uc = uclass_find(id);
	if (!uc)
		return uclass_add(id, ucp);
	*ucp = uc;

	return 0;
}

int uclass_find_device(enum uclass_id id, int index, struct udevice **devp)
{
	struct uclass *uc;
	struct udevice *dev;
	int ret;

	*devp = NULL;
	ret = uclass_get(id, &uc);
	if (ret)
		return ret;

	list_for_each_entry(dev, &uc->dev_head, uclass_node) {
		if (!index--) {
			*devp = dev;
			return 0;
		}
	}

	return -ENODEV;
}

int uclass_find_first_device(enum uclass_id id, struct udevice **devp)
{
	struct uclass *uc;
	int ret;

	*devp = NULL;
	ret = uclass_get(id, &uc);
	if (ret)
		return ret;
	if (list_empty(&uc->dev_head))
		return 0;

	*devp = list_first_entry(&uc->dev_head, struct udevice, uclass_node);

	return 0;
}

int uclass_find_next_device(struct udevice **devp)
{
	struct udevice *dev = *devp;

	*devp = NULL;
	if (list_is_last(&dev->uclass_node, &dev->uclass->dev_head))
		return 0;

	*devp = list_entry(dev->uclass_node.next, struct udevice, uclass_node);

	return 0;
}

int uclass_find_device_by_name(enum uclass_id id, const char *name,
			       struct udevice **devp)
{
	struct uclass *uc;
	struct udevice *dev;
	int ret;

	*devp = NULL;
	if (!name)
		return -EINVAL;
	ret = uclass_get(id, &uc);
	if (ret)
		return ret;

	list_for_each_entry(dev, &uc->dev_head, uclass_node) {
		if (!strncmp(dev->name, name, strlen(name))) {
			*devp = dev;
			return 0;
		}
	}

	return -ENODEV;
}

int uclass_find_device_by_seq(enum uclass_id id, int seq_or_req_seq,
			      bool find_req_seq, struct udevice **devp)
{
	struct uclass *uc;
	struct udevice *dev;
	int ret;

	*devp = NULL;
	debug("%s: %d %d\n", __func__, find_req_seq, seq_or_req_seq);
	if (seq_or_req_seq == -1)
		return -ENODEV;
	ret = uclass_get(id, &uc);
	if (ret)
		return ret;

	list_for_each_entry(dev, &uc->dev_head, uclass_node) {
		debug("   - %d %d\n", dev->req_seq, dev->seq);
		if ((find_req_seq ? dev->req_seq : dev->seq) ==
				seq_or_req_seq) {
			*devp = dev;
			debug("   - found\n");
			return 0;
		}
	}
	debug("   - not found\n");

	return -ENODEV;
}

static int uclass_find_device_by_of_offset(enum uclass_id id, int node,
					   struct udevice **devp)
{
	struct uclass *uc;
	struct udevice *dev;
	int ret;

	*devp = NULL;
	if (node < 0)
		return -ENODEV;
	ret = uclass_get(id, &uc);
	if (ret)
		return ret;

	list_for_each_entry(dev, &uc->dev_head, uclass_node) {
		if (dev->of_offset == node) {
			*devp = dev;
			return 0;
		}
	}

	return -ENODEV;
}

int uclass_get_device_tail(struct udevice *dev, int ret,
				  struct udevice **devp)
{
	if (ret)
		return ret;

	assert(dev);
	ret = device_probe(dev);
	if (ret)
		return ret;

	*devp = dev;

	return 0;
}

int uclass_get_device(enum uclass_id id, int index, struct udevice **devp)
{
	struct udevice *dev;
	int ret;

	*devp = NULL;
	ret = uclass_find_device(id, index, &dev);
	return uclass_get_device_tail(dev, ret, devp);
}

int uclass_get_device_by_name(enum uclass_id id, const char *name,
			      struct udevice **devp)
{
	struct udevice *dev;
	int ret;

	*devp = NULL;
	ret = uclass_find_device_by_name(id, name, &dev);
	return uclass_get_device_tail(dev, ret, devp);
}

int uclass_get_device_by_seq(enum uclass_id id, int seq, struct udevice **devp)
{
	struct udevice *dev;
	int ret;

	*devp = NULL;
	ret = uclass_find_device_by_seq(id, seq, false, &dev);
	if (ret == -ENODEV) {
		/*
		 * We didn't find it in probed devices. See if there is one
		 * that will request this seq if probed.
		 */
		ret = uclass_find_device_by_seq(id, seq, true, &dev);
	}
	return uclass_get_device_tail(dev, ret, devp);
}

int uclass_get_device_by_of_offset(enum uclass_id id, int node,
				   struct udevice **devp)
{
	struct udevice *dev;
	int ret;

	*devp = NULL;
	ret = uclass_find_device_by_of_offset(id, node, &dev);
	return uclass_get_device_tail(dev, ret, devp);
}

int uclass_first_device(enum uclass_id id, struct udevice **devp)
{
	struct udevice *dev;
	int ret;

	*devp = NULL;
	ret = uclass_find_first_device(id, &dev);
	if (!dev)
		return 0;
	return uclass_get_device_tail(dev, ret, devp);
}

int uclass_next_device(struct udevice **devp)
{
	struct udevice *dev = *devp;
	int ret;

	*devp = NULL;
	ret = uclass_find_next_device(&dev);
	if (!dev)
		return 0;
	return uclass_get_device_tail(dev, ret, devp);
}

int uclass_bind_device(struct udevice *dev)
{
	struct uclass *uc;
	int ret;

	uc = dev->uclass;
	list_add_tail(&dev->uclass_node, &uc->dev_head);

	if (dev->parent) {
		struct uclass_driver *uc_drv = dev->parent->uclass->uc_drv;

		if (uc_drv->child_post_bind) {
			ret = uc_drv->child_post_bind(dev);
			if (ret)
				goto err;
		}
	}
	if (uc->uc_drv->post_bind) {
		ret = uc->uc_drv->post_bind(dev);
		if (ret)
			goto err;
	}

	return 0;
err:
	/* There is no need to undo the parent's post_bind call */
	list_del(&dev->uclass_node);

	return ret;
}

#ifdef CONFIG_DM_DEVICE_REMOVE
int uclass_unbind_device(struct udevice *dev)
{
	struct uclass *uc;
	int ret;

	uc = dev->uclass;
	if (uc->uc_drv->pre_unbind) {
		ret = uc->uc_drv->pre_unbind(dev);
		if (ret)
			return ret;
	}

	list_del(&dev->uclass_node);
	return 0;
}
#endif

int uclass_resolve_seq(struct udevice *dev)
{
	struct udevice *dup;
	int seq;
	int ret;

	assert(dev->seq == -1);
	ret = uclass_find_device_by_seq(dev->uclass->uc_drv->id, dev->req_seq,
					false, &dup);
	if (!ret) {
		dm_warn("Device '%s': seq %d is in use by '%s'\n",
			dev->name, dev->req_seq, dup->name);
	} else if (ret == -ENODEV) {
		/* Our requested sequence number is available */
		if (dev->req_seq != -1)
			return dev->req_seq;
	} else {
		return ret;
	}

	for (seq = 0; seq < DM_MAX_SEQ; seq++) {
		ret = uclass_find_device_by_seq(dev->uclass->uc_drv->id, seq,
						false, &dup);
		if (ret == -ENODEV)
			break;
		if (ret)
			return ret;
	}
	return seq;
}

int uclass_pre_probe_device(struct udevice *dev)
{
	struct uclass_driver *uc_drv;
	int ret;

	uc_drv = dev->uclass->uc_drv;
	if (uc_drv->pre_probe) {
		ret = uc_drv->pre_probe(dev);
		if (ret)
			return ret;
	}

	if (!dev->parent)
		return 0;
	uc_drv = dev->parent->uclass->uc_drv;
	if (uc_drv->child_pre_probe)
		return uc_drv->child_pre_probe(dev);

	return 0;
}

int uclass_post_probe_device(struct udevice *dev)
{
	struct uclass_driver *uc_drv = dev->uclass->uc_drv;

	if (uc_drv->post_probe)
		return uc_drv->post_probe(dev);

	return 0;
}

#ifdef CONFIG_DM_DEVICE_REMOVE
int uclass_pre_remove_device(struct udevice *dev)
{
	struct uclass_driver *uc_drv;
	struct uclass *uc;
	int ret;

	uc = dev->uclass;
	uc_drv = uc->uc_drv;
	if (uc->uc_drv->pre_remove) {
		ret = uc->uc_drv->pre_remove(dev);
		if (ret)
			return ret;
	}
	if (uc_drv->per_device_auto_alloc_size) {
		free(dev->uclass_priv);
		dev->uclass_priv = NULL;
	}
	dev->seq = -1;

	return 0;
}
#endif
Commit	Line	Data
6494d708 SG	1	/*
	2	* Copyright (c) 2013 Google, Inc
	3	*
	4	* (C) Copyright 2012
	5	* Pavel Herrmann <morpheus.ibis@gmail.com>
	6	*
	7	* SPDX-License-Identifier: GPL-2.0+
	8	*/
	9
	10	#include <common.h>
	11	#include <errno.h>
	12	#include <malloc.h>
	13	#include <dm/device.h>
	14	#include <dm/device-internal.h>
	15	#include <dm/lists.h>
	16	#include <dm/uclass.h>
	17	#include <dm/uclass-internal.h>
	18	#include <dm/util.h>
	19
	20	DECLARE_GLOBAL_DATA_PTR;
	21
	22	struct uclass *uclass_find(enum uclass_id key)
	23	{
	24	struct uclass *uc;
	25
c910e2e2 SG	26	if (!gd->dm_root)
c910e2e2 SG	27	return NULL;
6494d708 SG	28	/*
	29	* TODO(sjg@chromium.org): Optimise this, perhaps moving the found
	30	* node to the start of the list, or creating a linear array mapping
	31	* id to node.
	32	*/
	33	list_for_each_entry(uc, &gd->uclass_root, sibling_node) {
	34	if (uc->uc_drv->id == key)
	35	return uc;
	36	}
	37
	38	return NULL;
	39	}
	40
	41	/**
	42	* uclass_add() - Create new uclass in list
	43	* @id: Id number to create
	44	* @ucp: Returns pointer to uclass, or NULL on error
	45	* @return 0 on success, -ve on error
	46	*
	47	* The new uclass is added to the list. There must be only one uclass for
	48	* each id.
	49	*/
	50	static int uclass_add(enum uclass_id id, struct uclass **ucp)
	51	{
	52	struct uclass_driver *uc_drv;
	53	struct uclass *uc;
	54	int ret;
	55
	56	*ucp = NULL;
	57	uc_drv = lists_uclass_lookup(id);
	58	if (!uc_drv) {
643e6902 MY	59	debug("Cannot find uclass for id %d: please add the UCLASS_DRIVER() declaration for this UCLASS_... id\n",
643e6902 MY	60	id);
6494d708 SG	61	return -ENOENT;
6494d708 SG	62	}
6494d708 SG	63	uc = calloc(1, sizeof(*uc));
	64	if (!uc)
	65	return -ENOMEM;
	66	if (uc_drv->priv_auto_alloc_size) {
	67	uc->priv = calloc(1, uc_drv->priv_auto_alloc_size);
	68	if (!uc->priv) {
	69	ret = -ENOMEM;
	70	goto fail_mem;
	71	}
	72	}
	73	uc->uc_drv = uc_drv;
	74	INIT_LIST_HEAD(&uc->sibling_node);
	75	INIT_LIST_HEAD(&uc->dev_head);
89876a55	76	list_add(&uc->sibling_node, &DM_UCLASS_ROOT_NON_CONST);
6494d708 SG	77
	78	if (uc_drv->init) {
	79	ret = uc_drv->init(uc);
	80	if (ret)
	81	goto fail;
	82	}
	83
	84	*ucp = uc;
	85
	86	return 0;
	87	fail:
	88	if (uc_drv->priv_auto_alloc_size) {
	89	free(uc->priv);
	90	uc->priv = NULL;
	91	}
	92	list_del(&uc->sibling_node);
	93	fail_mem:
	94	free(uc);
	95
	96	return ret;
	97	}
	98
	99	int uclass_destroy(struct uclass *uc)
	100	{
	101	struct uclass_driver *uc_drv;
07d260e0	102	struct udevice *dev;
6494d708 SG	103	int ret;
6494d708 SG	104
07d260e0 SG	105	/*
	106	* We cannot use list_for_each_entry_safe() here. If a device in this
	107	* uclass has a child device also in this uclass, it will be also be
	108	* unbound (by the recursion in the call to device_unbind() below).
	109	* We can loop until the list is empty.
	110	*/
	111	while (!list_empty(&uc->dev_head)) {
	112	dev = list_first_entry(&uc->dev_head, struct udevice,
	113	uclass_node);
6494d708 SG	114	ret = device_remove(dev);
	115	if (ret)
	116	return ret;
	117	ret = device_unbind(dev);
	118	if (ret)
	119	return ret;
	120	}
	121
	122	uc_drv = uc->uc_drv;
	123	if (uc_drv->destroy)
	124	uc_drv->destroy(uc);
	125	list_del(&uc->sibling_node);
	126	if (uc_drv->priv_auto_alloc_size)
	127	free(uc->priv);
	128	free(uc);
	129
	130	return 0;
	131	}
	132
	133	int uclass_get(enum uclass_id id, struct uclass **ucp)
	134	{
	135	struct uclass *uc;
	136
	137	*ucp = NULL;
	138	uc = uclass_find(id);
	139	if (!uc)
	140	return uclass_add(id, ucp);
	141	*ucp = uc;
	142
	143	return 0;
	144	}
	145
54c5d08a	146	int uclass_find_device(enum uclass_id id, int index, struct udevice **devp)
6494d708 SG	147	{
6494d708 SG	148	struct uclass *uc;
54c5d08a	149	struct udevice *dev;
6494d708 SG	150	int ret;
	151
	152	*devp = NULL;
	153	ret = uclass_get(id, &uc);
	154	if (ret)
	155	return ret;
	156
	157	list_for_each_entry(dev, &uc->dev_head, uclass_node) {
	158	if (!index--) {
	159	*devp = dev;
	160	return 0;
	161	}
	162	}
	163
	164	return -ENODEV;
	165	}
	166
c1d6f919 PM	167	int uclass_find_first_device(enum uclass_id id, struct udevice **devp)
	168	{
	169	struct uclass *uc;
	170	int ret;
	171
	172	*devp = NULL;
	173	ret = uclass_get(id, &uc);
	174	if (ret)
	175	return ret;
	176	if (list_empty(&uc->dev_head))
	177	return 0;
	178
	179	*devp = list_first_entry(&uc->dev_head, struct udevice, uclass_node);
	180
	181	return 0;
	182	}
	183
	184	int uclass_find_next_device(struct udevice **devp)
	185	{
	186	struct udevice dev = devp;
	187
	188	*devp = NULL;
	189	if (list_is_last(&dev->uclass_node, &dev->uclass->dev_head))
	190	return 0;
	191
	192	*devp = list_entry(dev->uclass_node.next, struct udevice, uclass_node);
	193
	194	return 0;
	195	}
	196
e0735a4c PM	197	int uclass_find_device_by_name(enum uclass_id id, const char *name,
	198	struct udevice **devp)
	199	{
	200	struct uclass *uc;
	201	struct udevice *dev;
	202	int ret;
	203
	204	*devp = NULL;
	205	if (!name)
	206	return -EINVAL;
	207	ret = uclass_get(id, &uc);
	208	if (ret)
	209	return ret;
	210
	211	list_for_each_entry(dev, &uc->dev_head, uclass_node) {
	212	if (!strncmp(dev->name, name, strlen(name))) {
	213	*devp = dev;
	214	return 0;
	215	}
	216	}
	217
	218	return -ENODEV;
	219	}
	220
5a66a8ff SG	221	int uclass_find_device_by_seq(enum uclass_id id, int seq_or_req_seq,
	222	bool find_req_seq, struct udevice **devp)
	223	{
	224	struct uclass *uc;
	225	struct udevice *dev;
	226	int ret;
	227
	228	*devp = NULL;
	229	debug("%s: %d %d\n", __func__, find_req_seq, seq_or_req_seq);
	230	if (seq_or_req_seq == -1)
	231	return -ENODEV;
	232	ret = uclass_get(id, &uc);
	233	if (ret)
	234	return ret;
	235
	236	list_for_each_entry(dev, &uc->dev_head, uclass_node) {
	237	debug(" - %d %d\n", dev->req_seq, dev->seq);
	238	if ((find_req_seq ? dev->req_seq : dev->seq) ==
	239	seq_or_req_seq) {
	240	*devp = dev;
	241	debug(" - found\n");
	242	return 0;
	243	}
	244	}
	245	debug(" - not found\n");
	246
	247	return -ENODEV;
	248	}
	249
f4cdead2 SG	250	static int uclass_find_device_by_of_offset(enum uclass_id id, int node,
	251	struct udevice **devp)
	252	{
	253	struct uclass *uc;
	254	struct udevice *dev;
	255	int ret;
	256
	257	*devp = NULL;
	258	if (node < 0)
	259	return -ENODEV;
	260	ret = uclass_get(id, &uc);
	261	if (ret)
	262	return ret;
	263
	264	list_for_each_entry(dev, &uc->dev_head, uclass_node) {
	265	if (dev->of_offset == node) {
	266	*devp = dev;
	267	return 0;
	268	}
	269	}
	270
	271	return -ENODEV;
	272	}
	273
794d5219	274	int uclass_get_device_tail(struct udevice *dev, int ret,
9ca296a1	275	struct udevice **devp)
6494d708	276	{
6494d708 SG	277	if (ret)
	278	return ret;
	279
f66529f9	280	assert(dev);
6494d708 SG	281	ret = device_probe(dev);
	282	if (ret)
	283	return ret;
	284
	285	*devp = dev;
	286
	287	return 0;
	288	}
	289
9ca296a1 SG	290	int uclass_get_device(enum uclass_id id, int index, struct udevice **devp)
	291	{
	292	struct udevice *dev;
	293	int ret;
	294
	295	*devp = NULL;
	296	ret = uclass_find_device(id, index, &dev);
	297	return uclass_get_device_tail(dev, ret, devp);
	298	}
	299
b7af1a2d PM	300	int uclass_get_device_by_name(enum uclass_id id, const char *name,
	301	struct udevice **devp)
	302	{
	303	struct udevice *dev;
	304	int ret;
	305
	306	*devp = NULL;
	307	ret = uclass_find_device_by_name(id, name, &dev);
	308	return uclass_get_device_tail(dev, ret, devp);
	309	}
	310
5a66a8ff SG	311	int uclass_get_device_by_seq(enum uclass_id id, int seq, struct udevice **devp)
	312	{
	313	struct udevice *dev;
	314	int ret;
	315
	316	*devp = NULL;
	317	ret = uclass_find_device_by_seq(id, seq, false, &dev);
	318	if (ret == -ENODEV) {
	319	/*
	320	* We didn't find it in probed devices. See if there is one
	321	* that will request this seq if probed.
	322	*/
	323	ret = uclass_find_device_by_seq(id, seq, true, &dev);
	324	}
	325	return uclass_get_device_tail(dev, ret, devp);
	326	}
	327
f4cdead2 SG	328	int uclass_get_device_by_of_offset(enum uclass_id id, int node,
	329	struct udevice **devp)
	330	{
	331	struct udevice *dev;
	332	int ret;
	333
	334	*devp = NULL;
	335	ret = uclass_find_device_by_of_offset(id, node, &dev);
	336	return uclass_get_device_tail(dev, ret, devp);
	337	}
	338
54c5d08a	339	int uclass_first_device(enum uclass_id id, struct udevice **devp)
6494d708	340	{
54c5d08a	341	struct udevice *dev;
6494d708 SG	342	int ret;
	343
	344	*devp = NULL;
c1d6f919	345	ret = uclass_find_first_device(id, &dev);
f66529f9 SG	346	if (!dev)
f66529f9 SG	347	return 0;
c1d6f919	348	return uclass_get_device_tail(dev, ret, devp);
6494d708 SG	349	}
6494d708 SG	350
54c5d08a	351	int uclass_next_device(struct udevice **devp)
6494d708	352	{
54c5d08a	353	struct udevice dev = devp;
6494d708 SG	354	int ret;
	355
	356	*devp = NULL;
c1d6f919	357	ret = uclass_find_next_device(&dev);
f66529f9 SG	358	if (!dev)
f66529f9 SG	359	return 0;
c1d6f919	360	return uclass_get_device_tail(dev, ret, devp);
6494d708 SG	361	}
6494d708 SG	362
54c5d08a	363	int uclass_bind_device(struct udevice *dev)
6494d708 SG	364	{
	365	struct uclass *uc;
	366	int ret;
	367
	368	uc = dev->uclass;
6494d708 SG	369	list_add_tail(&dev->uclass_node, &uc->dev_head);
6494d708 SG	370
081f2fcb SG	371	if (dev->parent) {
	372	struct uclass_driver *uc_drv = dev->parent->uclass->uc_drv;
	373
	374	if (uc_drv->child_post_bind) {
	375	ret = uc_drv->child_post_bind(dev);
	376	if (ret)
	377	goto err;
	378	}
	379	}
6494d708 SG	380	if (uc->uc_drv->post_bind) {
6494d708 SG	381	ret = uc->uc_drv->post_bind(dev);
081f2fcb SG	382	if (ret)
081f2fcb SG	383	goto err;
6494d708 SG	384	}
	385
	386	return 0;
081f2fcb SG	387	err:
	388	/* There is no need to undo the parent's post_bind call */
	389	list_del(&dev->uclass_node);
	390
	391	return ret;
6494d708 SG	392	}
6494d708 SG	393
7f9875e7	394	#ifdef CONFIG_DM_DEVICE_REMOVE
54c5d08a	395	int uclass_unbind_device(struct udevice *dev)
6494d708 SG	396	{
	397	struct uclass *uc;
	398	int ret;
	399
	400	uc = dev->uclass;
	401	if (uc->uc_drv->pre_unbind) {
	402	ret = uc->uc_drv->pre_unbind(dev);
	403	if (ret)
	404	return ret;
	405	}
	406
	407	list_del(&dev->uclass_node);
	408	return 0;
	409	}
7f9875e7	410	#endif
6494d708	411
5a66a8ff SG	412	int uclass_resolve_seq(struct udevice *dev)
	413	{
	414	struct udevice *dup;
	415	int seq;
	416	int ret;
	417
	418	assert(dev->seq == -1);
	419	ret = uclass_find_device_by_seq(dev->uclass->uc_drv->id, dev->req_seq,
	420	false, &dup);
	421	if (!ret) {
	422	dm_warn("Device '%s': seq %d is in use by '%s'\n",
	423	dev->name, dev->req_seq, dup->name);
	424	} else if (ret == -ENODEV) {
	425	/* Our requested sequence number is available */
	426	if (dev->req_seq != -1)
	427	return dev->req_seq;
	428	} else {
	429	return ret;
	430	}
	431
	432	for (seq = 0; seq < DM_MAX_SEQ; seq++) {
	433	ret = uclass_find_device_by_seq(dev->uclass->uc_drv->id, seq,
	434	false, &dup);
	435	if (ret == -ENODEV)
	436	break;
	437	if (ret)
	438	return ret;
	439	}
	440	return seq;
	441	}
	442
02c07b37	443	int uclass_pre_probe_device(struct udevice *dev)
83c7e434 SG	444	{
83c7e434 SG	445	struct uclass_driver *uc_drv;
02c07b37 SG	446	int ret;
	447
	448	uc_drv = dev->uclass->uc_drv;
	449	if (uc_drv->pre_probe) {
	450	ret = uc_drv->pre_probe(dev);
	451	if (ret)
	452	return ret;
	453	}
83c7e434 SG	454
	455	if (!dev->parent)
	456	return 0;
	457	uc_drv = dev->parent->uclass->uc_drv;
	458	if (uc_drv->child_pre_probe)
	459	return uc_drv->child_pre_probe(dev);
	460
	461	return 0;
	462	}
	463
54c5d08a	464	int uclass_post_probe_device(struct udevice *dev)
6494d708 SG	465	{
	466	struct uclass_driver *uc_drv = dev->uclass->uc_drv;
	467
	468	if (uc_drv->post_probe)
	469	return uc_drv->post_probe(dev);
	470
	471	return 0;
	472	}
	473
7f9875e7	474	#ifdef CONFIG_DM_DEVICE_REMOVE
54c5d08a	475	int uclass_pre_remove_device(struct udevice *dev)
6494d708 SG	476	{
	477	struct uclass_driver *uc_drv;
	478	struct uclass *uc;
	479	int ret;
	480
	481	uc = dev->uclass;
	482	uc_drv = uc->uc_drv;
	483	if (uc->uc_drv->pre_remove) {
	484	ret = uc->uc_drv->pre_remove(dev);
	485	if (ret)
	486	return ret;
	487	}
	488	if (uc_drv->per_device_auto_alloc_size) {
	489	free(dev->uclass_priv);
	490	dev->uclass_priv = NULL;
	491	}
5a66a8ff	492	dev->seq = -1;
6494d708 SG	493
	494	return 0;
	495	}
7f9875e7	496	#endif