16494d708SSimon Glass /* 26494d708SSimon Glass * Copyright (c) 2013 Google, Inc 36494d708SSimon Glass * 46494d708SSimon Glass * (C) Copyright 2012 56494d708SSimon Glass * Pavel Herrmann <morpheus.ibis@gmail.com> 66494d708SSimon Glass * 76494d708SSimon Glass * SPDX-License-Identifier: GPL-2.0+ 86494d708SSimon Glass */ 96494d708SSimon Glass 106494d708SSimon Glass #include <common.h> 1140bb637dSSimon Glass #include <dm.h> 126494d708SSimon Glass #include <errno.h> 136494d708SSimon Glass #include <malloc.h> 146494d708SSimon Glass #include <dm/device.h> 156494d708SSimon Glass #include <dm/device-internal.h> 166494d708SSimon Glass #include <dm/lists.h> 176494d708SSimon Glass #include <dm/uclass.h> 186494d708SSimon Glass #include <dm/uclass-internal.h> 196494d708SSimon Glass #include <dm/util.h> 206494d708SSimon Glass 216494d708SSimon Glass DECLARE_GLOBAL_DATA_PTR; 226494d708SSimon Glass 236494d708SSimon Glass struct uclass *uclass_find(enum uclass_id key) 246494d708SSimon Glass { 256494d708SSimon Glass struct uclass *uc; 266494d708SSimon Glass 27c910e2e2SSimon Glass if (!gd->dm_root) 28c910e2e2SSimon Glass return NULL; 296494d708SSimon Glass /* 306494d708SSimon Glass * TODO(sjg@chromium.org): Optimise this, perhaps moving the found 316494d708SSimon Glass * node to the start of the list, or creating a linear array mapping 326494d708SSimon Glass * id to node. 336494d708SSimon Glass */ 346494d708SSimon Glass list_for_each_entry(uc, &gd->uclass_root, sibling_node) { 356494d708SSimon Glass if (uc->uc_drv->id == key) 366494d708SSimon Glass return uc; 376494d708SSimon Glass } 386494d708SSimon Glass 396494d708SSimon Glass return NULL; 406494d708SSimon Glass } 416494d708SSimon Glass 426494d708SSimon Glass /** 436494d708SSimon Glass * uclass_add() - Create new uclass in list 446494d708SSimon Glass * @id: Id number to create 456494d708SSimon Glass * @ucp: Returns pointer to uclass, or NULL on error 466494d708SSimon Glass * @return 0 on success, -ve on error 476494d708SSimon Glass * 486494d708SSimon Glass * The new uclass is added to the list. There must be only one uclass for 496494d708SSimon Glass * each id. 506494d708SSimon Glass */ 516494d708SSimon Glass static int uclass_add(enum uclass_id id, struct uclass **ucp) 526494d708SSimon Glass { 536494d708SSimon Glass struct uclass_driver *uc_drv; 546494d708SSimon Glass struct uclass *uc; 556494d708SSimon Glass int ret; 566494d708SSimon Glass 576494d708SSimon Glass *ucp = NULL; 586494d708SSimon Glass uc_drv = lists_uclass_lookup(id); 596494d708SSimon Glass if (!uc_drv) { 60643e6902SMasahiro Yamada debug("Cannot find uclass for id %d: please add the UCLASS_DRIVER() declaration for this UCLASS_... id\n", 616494d708SSimon Glass id); 623346c876SSimon Glass /* 633346c876SSimon Glass * Use a strange error to make this case easier to find. When 643346c876SSimon Glass * a uclass is not available it can prevent driver model from 653346c876SSimon Glass * starting up and this failure is otherwise hard to debug. 663346c876SSimon Glass */ 673346c876SSimon Glass return -EPFNOSUPPORT; 686494d708SSimon Glass } 696494d708SSimon Glass uc = calloc(1, sizeof(*uc)); 706494d708SSimon Glass if (!uc) 716494d708SSimon Glass return -ENOMEM; 726494d708SSimon Glass if (uc_drv->priv_auto_alloc_size) { 736494d708SSimon Glass uc->priv = calloc(1, uc_drv->priv_auto_alloc_size); 746494d708SSimon Glass if (!uc->priv) { 756494d708SSimon Glass ret = -ENOMEM; 766494d708SSimon Glass goto fail_mem; 776494d708SSimon Glass } 786494d708SSimon Glass } 796494d708SSimon Glass uc->uc_drv = uc_drv; 806494d708SSimon Glass INIT_LIST_HEAD(&uc->sibling_node); 816494d708SSimon Glass INIT_LIST_HEAD(&uc->dev_head); 8289876a55SSimon Glass list_add(&uc->sibling_node, &DM_UCLASS_ROOT_NON_CONST); 836494d708SSimon Glass 846494d708SSimon Glass if (uc_drv->init) { 856494d708SSimon Glass ret = uc_drv->init(uc); 866494d708SSimon Glass if (ret) 876494d708SSimon Glass goto fail; 886494d708SSimon Glass } 896494d708SSimon Glass 906494d708SSimon Glass *ucp = uc; 916494d708SSimon Glass 926494d708SSimon Glass return 0; 936494d708SSimon Glass fail: 946494d708SSimon Glass if (uc_drv->priv_auto_alloc_size) { 956494d708SSimon Glass free(uc->priv); 966494d708SSimon Glass uc->priv = NULL; 976494d708SSimon Glass } 986494d708SSimon Glass list_del(&uc->sibling_node); 996494d708SSimon Glass fail_mem: 1006494d708SSimon Glass free(uc); 1016494d708SSimon Glass 1026494d708SSimon Glass return ret; 1036494d708SSimon Glass } 1046494d708SSimon Glass 1056494d708SSimon Glass int uclass_destroy(struct uclass *uc) 1066494d708SSimon Glass { 1076494d708SSimon Glass struct uclass_driver *uc_drv; 10807d260e0SSimon Glass struct udevice *dev; 1096494d708SSimon Glass int ret; 1106494d708SSimon Glass 11107d260e0SSimon Glass /* 11207d260e0SSimon Glass * We cannot use list_for_each_entry_safe() here. If a device in this 11307d260e0SSimon Glass * uclass has a child device also in this uclass, it will be also be 11407d260e0SSimon Glass * unbound (by the recursion in the call to device_unbind() below). 11507d260e0SSimon Glass * We can loop until the list is empty. 11607d260e0SSimon Glass */ 11707d260e0SSimon Glass while (!list_empty(&uc->dev_head)) { 11807d260e0SSimon Glass dev = list_first_entry(&uc->dev_head, struct udevice, 11907d260e0SSimon Glass uclass_node); 120706865afSStefan Roese ret = device_remove(dev, DM_REMOVE_NORMAL); 1216494d708SSimon Glass if (ret) 1226494d708SSimon Glass return ret; 1236494d708SSimon Glass ret = device_unbind(dev); 1246494d708SSimon Glass if (ret) 1256494d708SSimon Glass return ret; 1266494d708SSimon Glass } 1276494d708SSimon Glass 1286494d708SSimon Glass uc_drv = uc->uc_drv; 1296494d708SSimon Glass if (uc_drv->destroy) 1306494d708SSimon Glass uc_drv->destroy(uc); 1316494d708SSimon Glass list_del(&uc->sibling_node); 1326494d708SSimon Glass if (uc_drv->priv_auto_alloc_size) 1336494d708SSimon Glass free(uc->priv); 1346494d708SSimon Glass free(uc); 1356494d708SSimon Glass 1366494d708SSimon Glass return 0; 1376494d708SSimon Glass } 1386494d708SSimon Glass 1396494d708SSimon Glass int uclass_get(enum uclass_id id, struct uclass **ucp) 1406494d708SSimon Glass { 1416494d708SSimon Glass struct uclass *uc; 1426494d708SSimon Glass 1436494d708SSimon Glass *ucp = NULL; 1446494d708SSimon Glass uc = uclass_find(id); 1456494d708SSimon Glass if (!uc) 1466494d708SSimon Glass return uclass_add(id, ucp); 1476494d708SSimon Glass *ucp = uc; 1486494d708SSimon Glass 1496494d708SSimon Glass return 0; 1506494d708SSimon Glass } 1516494d708SSimon Glass 1520a5f6f86SSimon Glass const char *uclass_get_name(enum uclass_id id) 1530a5f6f86SSimon Glass { 1540a5f6f86SSimon Glass struct uclass *uc; 1550a5f6f86SSimon Glass 1560a5f6f86SSimon Glass if (uclass_get(id, &uc)) 1570a5f6f86SSimon Glass return NULL; 1580a5f6f86SSimon Glass return uc->uc_drv->name; 1590a5f6f86SSimon Glass } 1600a5f6f86SSimon Glass 16154c5d08aSHeiko Schocher int uclass_find_device(enum uclass_id id, int index, struct udevice **devp) 1626494d708SSimon Glass { 1636494d708SSimon Glass struct uclass *uc; 16454c5d08aSHeiko Schocher struct udevice *dev; 1656494d708SSimon Glass int ret; 1666494d708SSimon Glass 1676494d708SSimon Glass *devp = NULL; 1686494d708SSimon Glass ret = uclass_get(id, &uc); 1696494d708SSimon Glass if (ret) 1706494d708SSimon Glass return ret; 1712fda14aeSSimon Glass if (list_empty(&uc->dev_head)) 1722fda14aeSSimon Glass return -ENODEV; 1736494d708SSimon Glass 1746494d708SSimon Glass list_for_each_entry(dev, &uc->dev_head, uclass_node) { 1756494d708SSimon Glass if (!index--) { 1766494d708SSimon Glass *devp = dev; 1776494d708SSimon Glass return 0; 1786494d708SSimon Glass } 1796494d708SSimon Glass } 1806494d708SSimon Glass 1816494d708SSimon Glass return -ENODEV; 1826494d708SSimon Glass } 1836494d708SSimon Glass 184c1d6f919SPrzemyslaw Marczak int uclass_find_first_device(enum uclass_id id, struct udevice **devp) 185c1d6f919SPrzemyslaw Marczak { 186c1d6f919SPrzemyslaw Marczak struct uclass *uc; 187c1d6f919SPrzemyslaw Marczak int ret; 188c1d6f919SPrzemyslaw Marczak 189c1d6f919SPrzemyslaw Marczak *devp = NULL; 190c1d6f919SPrzemyslaw Marczak ret = uclass_get(id, &uc); 191c1d6f919SPrzemyslaw Marczak if (ret) 192c1d6f919SPrzemyslaw Marczak return ret; 193c1d6f919SPrzemyslaw Marczak if (list_empty(&uc->dev_head)) 194c1d6f919SPrzemyslaw Marczak return 0; 195c1d6f919SPrzemyslaw Marczak 196c1d6f919SPrzemyslaw Marczak *devp = list_first_entry(&uc->dev_head, struct udevice, uclass_node); 197c1d6f919SPrzemyslaw Marczak 198c1d6f919SPrzemyslaw Marczak return 0; 199c1d6f919SPrzemyslaw Marczak } 200c1d6f919SPrzemyslaw Marczak 201c1d6f919SPrzemyslaw Marczak int uclass_find_next_device(struct udevice **devp) 202c1d6f919SPrzemyslaw Marczak { 203c1d6f919SPrzemyslaw Marczak struct udevice *dev = *devp; 204c1d6f919SPrzemyslaw Marczak 205c1d6f919SPrzemyslaw Marczak *devp = NULL; 206c1d6f919SPrzemyslaw Marczak if (list_is_last(&dev->uclass_node, &dev->uclass->dev_head)) 207c1d6f919SPrzemyslaw Marczak return 0; 208c1d6f919SPrzemyslaw Marczak 209c1d6f919SPrzemyslaw Marczak *devp = list_entry(dev->uclass_node.next, struct udevice, uclass_node); 210c1d6f919SPrzemyslaw Marczak 211c1d6f919SPrzemyslaw Marczak return 0; 212c1d6f919SPrzemyslaw Marczak } 213c1d6f919SPrzemyslaw Marczak 214e0735a4cSPrzemyslaw Marczak int uclass_find_device_by_name(enum uclass_id id, const char *name, 215e0735a4cSPrzemyslaw Marczak struct udevice **devp) 216e0735a4cSPrzemyslaw Marczak { 217e0735a4cSPrzemyslaw Marczak struct uclass *uc; 218e0735a4cSPrzemyslaw Marczak struct udevice *dev; 219e0735a4cSPrzemyslaw Marczak int ret; 220e0735a4cSPrzemyslaw Marczak 221e0735a4cSPrzemyslaw Marczak *devp = NULL; 222e0735a4cSPrzemyslaw Marczak if (!name) 223e0735a4cSPrzemyslaw Marczak return -EINVAL; 224e0735a4cSPrzemyslaw Marczak ret = uclass_get(id, &uc); 225e0735a4cSPrzemyslaw Marczak if (ret) 226e0735a4cSPrzemyslaw Marczak return ret; 227e0735a4cSPrzemyslaw Marczak 228e0735a4cSPrzemyslaw Marczak list_for_each_entry(dev, &uc->dev_head, uclass_node) { 229e0735a4cSPrzemyslaw Marczak if (!strncmp(dev->name, name, strlen(name))) { 230e0735a4cSPrzemyslaw Marczak *devp = dev; 231e0735a4cSPrzemyslaw Marczak return 0; 232e0735a4cSPrzemyslaw Marczak } 233e0735a4cSPrzemyslaw Marczak } 234e0735a4cSPrzemyslaw Marczak 235e0735a4cSPrzemyslaw Marczak return -ENODEV; 236e0735a4cSPrzemyslaw Marczak } 237e0735a4cSPrzemyslaw Marczak 2385a66a8ffSSimon Glass int uclass_find_device_by_seq(enum uclass_id id, int seq_or_req_seq, 2395a66a8ffSSimon Glass bool find_req_seq, struct udevice **devp) 2405a66a8ffSSimon Glass { 2415a66a8ffSSimon Glass struct uclass *uc; 2425a66a8ffSSimon Glass struct udevice *dev; 2435a66a8ffSSimon Glass int ret; 2445a66a8ffSSimon Glass 2455a66a8ffSSimon Glass *devp = NULL; 2465a66a8ffSSimon Glass debug("%s: %d %d\n", __func__, find_req_seq, seq_or_req_seq); 2475a66a8ffSSimon Glass if (seq_or_req_seq == -1) 2485a66a8ffSSimon Glass return -ENODEV; 2495a66a8ffSSimon Glass ret = uclass_get(id, &uc); 2505a66a8ffSSimon Glass if (ret) 2515a66a8ffSSimon Glass return ret; 2525a66a8ffSSimon Glass 2535a66a8ffSSimon Glass list_for_each_entry(dev, &uc->dev_head, uclass_node) { 254ea168e33SAlexandru Gagniuc debug(" - %d %d '%s'\n", dev->req_seq, dev->seq, dev->name); 2555a66a8ffSSimon Glass if ((find_req_seq ? dev->req_seq : dev->seq) == 2565a66a8ffSSimon Glass seq_or_req_seq) { 2575a66a8ffSSimon Glass *devp = dev; 2585a66a8ffSSimon Glass debug(" - found\n"); 2595a66a8ffSSimon Glass return 0; 2605a66a8ffSSimon Glass } 2615a66a8ffSSimon Glass } 2625a66a8ffSSimon Glass debug(" - not found\n"); 2635a66a8ffSSimon Glass 2645a66a8ffSSimon Glass return -ENODEV; 2655a66a8ffSSimon Glass } 2665a66a8ffSSimon Glass 2671b30d61dSSimon Glass int uclass_find_device_by_of_offset(enum uclass_id id, int node, 268f4cdead2SSimon Glass struct udevice **devp) 269f4cdead2SSimon Glass { 270f4cdead2SSimon Glass struct uclass *uc; 271f4cdead2SSimon Glass struct udevice *dev; 272f4cdead2SSimon Glass int ret; 273f4cdead2SSimon Glass 274f4cdead2SSimon Glass *devp = NULL; 275f4cdead2SSimon Glass if (node < 0) 276f4cdead2SSimon Glass return -ENODEV; 277f4cdead2SSimon Glass ret = uclass_get(id, &uc); 278f4cdead2SSimon Glass if (ret) 279f4cdead2SSimon Glass return ret; 280f4cdead2SSimon Glass 281f4cdead2SSimon Glass list_for_each_entry(dev, &uc->dev_head, uclass_node) { 282e160f7d4SSimon Glass if (dev_of_offset(dev) == node) { 283f4cdead2SSimon Glass *devp = dev; 284f4cdead2SSimon Glass return 0; 285f4cdead2SSimon Glass } 286f4cdead2SSimon Glass } 287f4cdead2SSimon Glass 288f4cdead2SSimon Glass return -ENODEV; 289f4cdead2SSimon Glass } 290f4cdead2SSimon Glass 29140bb637dSSimon Glass int uclass_find_device_by_ofnode(enum uclass_id id, ofnode node, 29240bb637dSSimon Glass struct udevice **devp) 29340bb637dSSimon Glass { 29440bb637dSSimon Glass struct uclass *uc; 29540bb637dSSimon Glass struct udevice *dev; 29640bb637dSSimon Glass int ret; 29740bb637dSSimon Glass 29840bb637dSSimon Glass *devp = NULL; 29940bb637dSSimon Glass if (!ofnode_valid(node)) 30040bb637dSSimon Glass return -ENODEV; 30140bb637dSSimon Glass ret = uclass_get(id, &uc); 30240bb637dSSimon Glass if (ret) 30340bb637dSSimon Glass return ret; 30440bb637dSSimon Glass 30540bb637dSSimon Glass list_for_each_entry(dev, &uc->dev_head, uclass_node) { 30640bb637dSSimon Glass if (ofnode_equal(dev_ofnode(dev), node)) { 30740bb637dSSimon Glass *devp = dev; 30840bb637dSSimon Glass return 0; 30940bb637dSSimon Glass } 31040bb637dSSimon Glass } 31140bb637dSSimon Glass 31240bb637dSSimon Glass return -ENODEV; 31340bb637dSSimon Glass } 31440bb637dSSimon Glass 315c275dfefSSimon Glass #if CONFIG_IS_ENABLED(OF_CONTROL) 316d82ba4c0SSimon Glass static int uclass_find_device_by_phandle(enum uclass_id id, 317d82ba4c0SSimon Glass struct udevice *parent, 318d82ba4c0SSimon Glass const char *name, 319d82ba4c0SSimon Glass struct udevice **devp) 320d82ba4c0SSimon Glass { 321d82ba4c0SSimon Glass struct udevice *dev; 322d82ba4c0SSimon Glass struct uclass *uc; 323d82ba4c0SSimon Glass int find_phandle; 324d82ba4c0SSimon Glass int ret; 325d82ba4c0SSimon Glass 326d82ba4c0SSimon Glass *devp = NULL; 327a40cc8e1SSimon Glass find_phandle = dev_read_u32_default(parent, name, -1); 328d82ba4c0SSimon Glass if (find_phandle <= 0) 329d82ba4c0SSimon Glass return -ENOENT; 330d82ba4c0SSimon Glass ret = uclass_get(id, &uc); 331d82ba4c0SSimon Glass if (ret) 332d82ba4c0SSimon Glass return ret; 333d82ba4c0SSimon Glass 334d82ba4c0SSimon Glass list_for_each_entry(dev, &uc->dev_head, uclass_node) { 335e160f7d4SSimon Glass uint phandle; 336e160f7d4SSimon Glass 337a40cc8e1SSimon Glass phandle = dev_read_phandle(dev); 338d82ba4c0SSimon Glass 339d82ba4c0SSimon Glass if (phandle == find_phandle) { 340d82ba4c0SSimon Glass *devp = dev; 341d82ba4c0SSimon Glass return 0; 342d82ba4c0SSimon Glass } 343d82ba4c0SSimon Glass } 344d82ba4c0SSimon Glass 345d82ba4c0SSimon Glass return -ENODEV; 346d82ba4c0SSimon Glass } 347c275dfefSSimon Glass #endif 348d82ba4c0SSimon Glass 349c57f806bSSimon Glass int uclass_get_device_by_driver(enum uclass_id id, 350c57f806bSSimon Glass const struct driver *find_drv, 351c57f806bSSimon Glass struct udevice **devp) 352c57f806bSSimon Glass { 353c57f806bSSimon Glass struct udevice *dev; 354c57f806bSSimon Glass struct uclass *uc; 355c57f806bSSimon Glass int ret; 356c57f806bSSimon Glass 357c57f806bSSimon Glass ret = uclass_get(id, &uc); 358c57f806bSSimon Glass if (ret) 359c57f806bSSimon Glass return ret; 360c57f806bSSimon Glass 361c57f806bSSimon Glass list_for_each_entry(dev, &uc->dev_head, uclass_node) { 362c57f806bSSimon Glass if (dev->driver == find_drv) 363c57f806bSSimon Glass return uclass_get_device_tail(dev, 0, devp); 364c57f806bSSimon Glass } 365c57f806bSSimon Glass 366c57f806bSSimon Glass return -ENODEV; 367c57f806bSSimon Glass } 368c57f806bSSimon Glass 369*30a570a9SSimon Glass int uclass_get_device_tail(struct udevice *dev, int ret, struct udevice **devp) 3706494d708SSimon Glass { 3716494d708SSimon Glass if (ret) 3726494d708SSimon Glass return ret; 3736494d708SSimon Glass 374f66529f9SSimon Glass assert(dev); 3756494d708SSimon Glass ret = device_probe(dev); 3766494d708SSimon Glass if (ret) 3776494d708SSimon Glass return ret; 3786494d708SSimon Glass 3796494d708SSimon Glass *devp = dev; 3806494d708SSimon Glass 3816494d708SSimon Glass return 0; 3826494d708SSimon Glass } 3836494d708SSimon Glass 3849ca296a1SSimon Glass int uclass_get_device(enum uclass_id id, int index, struct udevice **devp) 3859ca296a1SSimon Glass { 3869ca296a1SSimon Glass struct udevice *dev; 3879ca296a1SSimon Glass int ret; 3889ca296a1SSimon Glass 3899ca296a1SSimon Glass *devp = NULL; 3909ca296a1SSimon Glass ret = uclass_find_device(id, index, &dev); 3919ca296a1SSimon Glass return uclass_get_device_tail(dev, ret, devp); 3929ca296a1SSimon Glass } 3939ca296a1SSimon Glass 394b7af1a2dSPrzemyslaw Marczak int uclass_get_device_by_name(enum uclass_id id, const char *name, 395b7af1a2dSPrzemyslaw Marczak struct udevice **devp) 396b7af1a2dSPrzemyslaw Marczak { 397b7af1a2dSPrzemyslaw Marczak struct udevice *dev; 398b7af1a2dSPrzemyslaw Marczak int ret; 399b7af1a2dSPrzemyslaw Marczak 400b7af1a2dSPrzemyslaw Marczak *devp = NULL; 401b7af1a2dSPrzemyslaw Marczak ret = uclass_find_device_by_name(id, name, &dev); 402b7af1a2dSPrzemyslaw Marczak return uclass_get_device_tail(dev, ret, devp); 403b7af1a2dSPrzemyslaw Marczak } 404b7af1a2dSPrzemyslaw Marczak 4055a66a8ffSSimon Glass int uclass_get_device_by_seq(enum uclass_id id, int seq, struct udevice **devp) 4065a66a8ffSSimon Glass { 4075a66a8ffSSimon Glass struct udevice *dev; 4085a66a8ffSSimon Glass int ret; 4095a66a8ffSSimon Glass 4105a66a8ffSSimon Glass *devp = NULL; 4115a66a8ffSSimon Glass ret = uclass_find_device_by_seq(id, seq, false, &dev); 4125a66a8ffSSimon Glass if (ret == -ENODEV) { 4135a66a8ffSSimon Glass /* 4145a66a8ffSSimon Glass * We didn't find it in probed devices. See if there is one 4155a66a8ffSSimon Glass * that will request this seq if probed. 4165a66a8ffSSimon Glass */ 4175a66a8ffSSimon Glass ret = uclass_find_device_by_seq(id, seq, true, &dev); 4185a66a8ffSSimon Glass } 4195a66a8ffSSimon Glass return uclass_get_device_tail(dev, ret, devp); 4205a66a8ffSSimon Glass } 4215a66a8ffSSimon Glass 422f4cdead2SSimon Glass int uclass_get_device_by_of_offset(enum uclass_id id, int node, 423f4cdead2SSimon Glass struct udevice **devp) 424f4cdead2SSimon Glass { 425f4cdead2SSimon Glass struct udevice *dev; 426f4cdead2SSimon Glass int ret; 427f4cdead2SSimon Glass 428f4cdead2SSimon Glass *devp = NULL; 429f4cdead2SSimon Glass ret = uclass_find_device_by_of_offset(id, node, &dev); 430f4cdead2SSimon Glass return uclass_get_device_tail(dev, ret, devp); 431f4cdead2SSimon Glass } 432f4cdead2SSimon Glass 43340bb637dSSimon Glass int uclass_get_device_by_ofnode(enum uclass_id id, ofnode node, 43440bb637dSSimon Glass struct udevice **devp) 43540bb637dSSimon Glass { 43640bb637dSSimon Glass struct udevice *dev; 43740bb637dSSimon Glass int ret; 43840bb637dSSimon Glass 43940bb637dSSimon Glass *devp = NULL; 44040bb637dSSimon Glass ret = uclass_find_device_by_ofnode(id, node, &dev); 44140bb637dSSimon Glass 44240bb637dSSimon Glass return uclass_get_device_tail(dev, ret, devp); 44340bb637dSSimon Glass } 44440bb637dSSimon Glass 445c275dfefSSimon Glass #if CONFIG_IS_ENABLED(OF_CONTROL) 446d82ba4c0SSimon Glass int uclass_get_device_by_phandle(enum uclass_id id, struct udevice *parent, 447d82ba4c0SSimon Glass const char *name, struct udevice **devp) 448d82ba4c0SSimon Glass { 449d82ba4c0SSimon Glass struct udevice *dev; 450d82ba4c0SSimon Glass int ret; 451d82ba4c0SSimon Glass 452d82ba4c0SSimon Glass *devp = NULL; 453d82ba4c0SSimon Glass ret = uclass_find_device_by_phandle(id, parent, name, &dev); 454d82ba4c0SSimon Glass return uclass_get_device_tail(dev, ret, devp); 455d82ba4c0SSimon Glass } 456c275dfefSSimon Glass #endif 457d82ba4c0SSimon Glass 45854c5d08aSHeiko Schocher int uclass_first_device(enum uclass_id id, struct udevice **devp) 4596494d708SSimon Glass { 46054c5d08aSHeiko Schocher struct udevice *dev; 4616494d708SSimon Glass int ret; 4626494d708SSimon Glass 4636494d708SSimon Glass *devp = NULL; 464c1d6f919SPrzemyslaw Marczak ret = uclass_find_first_device(id, &dev); 465f66529f9SSimon Glass if (!dev) 466f66529f9SSimon Glass return 0; 467c1d6f919SPrzemyslaw Marczak return uclass_get_device_tail(dev, ret, devp); 4686494d708SSimon Glass } 4696494d708SSimon Glass 470b0675050SSimon Glass int uclass_first_device_err(enum uclass_id id, struct udevice **devp) 471b0675050SSimon Glass { 472b0675050SSimon Glass int ret; 473b0675050SSimon Glass 474b0675050SSimon Glass ret = uclass_first_device(id, devp); 475b0675050SSimon Glass if (ret) 476b0675050SSimon Glass return ret; 477b0675050SSimon Glass else if (!*devp) 478b0675050SSimon Glass return -ENODEV; 479b0675050SSimon Glass 480b0675050SSimon Glass return 0; 481b0675050SSimon Glass } 482b0675050SSimon Glass 48354c5d08aSHeiko Schocher int uclass_next_device(struct udevice **devp) 4846494d708SSimon Glass { 48554c5d08aSHeiko Schocher struct udevice *dev = *devp; 4866494d708SSimon Glass int ret; 4876494d708SSimon Glass 4886494d708SSimon Glass *devp = NULL; 489c1d6f919SPrzemyslaw Marczak ret = uclass_find_next_device(&dev); 490f66529f9SSimon Glass if (!dev) 491f66529f9SSimon Glass return 0; 492c1d6f919SPrzemyslaw Marczak return uclass_get_device_tail(dev, ret, devp); 4936494d708SSimon Glass } 4946494d708SSimon Glass 49554c5d08aSHeiko Schocher int uclass_bind_device(struct udevice *dev) 4966494d708SSimon Glass { 4976494d708SSimon Glass struct uclass *uc; 4986494d708SSimon Glass int ret; 4996494d708SSimon Glass 5006494d708SSimon Glass uc = dev->uclass; 5016494d708SSimon Glass list_add_tail(&dev->uclass_node, &uc->dev_head); 5026494d708SSimon Glass 503081f2fcbSSimon Glass if (dev->parent) { 504081f2fcbSSimon Glass struct uclass_driver *uc_drv = dev->parent->uclass->uc_drv; 505081f2fcbSSimon Glass 506081f2fcbSSimon Glass if (uc_drv->child_post_bind) { 507081f2fcbSSimon Glass ret = uc_drv->child_post_bind(dev); 508081f2fcbSSimon Glass if (ret) 509081f2fcbSSimon Glass goto err; 510081f2fcbSSimon Glass } 511081f2fcbSSimon Glass } 5126494d708SSimon Glass 5136494d708SSimon Glass return 0; 514081f2fcbSSimon Glass err: 515081f2fcbSSimon Glass /* There is no need to undo the parent's post_bind call */ 516081f2fcbSSimon Glass list_del(&dev->uclass_node); 517081f2fcbSSimon Glass 518081f2fcbSSimon Glass return ret; 5196494d708SSimon Glass } 5206494d708SSimon Glass 5210a5804b5SMasahiro Yamada #if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE) 52254c5d08aSHeiko Schocher int uclass_unbind_device(struct udevice *dev) 5236494d708SSimon Glass { 5246494d708SSimon Glass struct uclass *uc; 5256494d708SSimon Glass int ret; 5266494d708SSimon Glass 5276494d708SSimon Glass uc = dev->uclass; 5286494d708SSimon Glass if (uc->uc_drv->pre_unbind) { 5296494d708SSimon Glass ret = uc->uc_drv->pre_unbind(dev); 5306494d708SSimon Glass if (ret) 5316494d708SSimon Glass return ret; 5326494d708SSimon Glass } 5336494d708SSimon Glass 5346494d708SSimon Glass list_del(&dev->uclass_node); 5356494d708SSimon Glass return 0; 5366494d708SSimon Glass } 5377f9875e7SSimon Glass #endif 5386494d708SSimon Glass 5395a66a8ffSSimon Glass int uclass_resolve_seq(struct udevice *dev) 5405a66a8ffSSimon Glass { 5415a66a8ffSSimon Glass struct udevice *dup; 5425a66a8ffSSimon Glass int seq; 5435a66a8ffSSimon Glass int ret; 5445a66a8ffSSimon Glass 5455a66a8ffSSimon Glass assert(dev->seq == -1); 5465a66a8ffSSimon Glass ret = uclass_find_device_by_seq(dev->uclass->uc_drv->id, dev->req_seq, 5475a66a8ffSSimon Glass false, &dup); 5485a66a8ffSSimon Glass if (!ret) { 5495a66a8ffSSimon Glass dm_warn("Device '%s': seq %d is in use by '%s'\n", 5505a66a8ffSSimon Glass dev->name, dev->req_seq, dup->name); 5515a66a8ffSSimon Glass } else if (ret == -ENODEV) { 5525a66a8ffSSimon Glass /* Our requested sequence number is available */ 5535a66a8ffSSimon Glass if (dev->req_seq != -1) 5545a66a8ffSSimon Glass return dev->req_seq; 5555a66a8ffSSimon Glass } else { 5565a66a8ffSSimon Glass return ret; 5575a66a8ffSSimon Glass } 5585a66a8ffSSimon Glass 5595a66a8ffSSimon Glass for (seq = 0; seq < DM_MAX_SEQ; seq++) { 5605a66a8ffSSimon Glass ret = uclass_find_device_by_seq(dev->uclass->uc_drv->id, seq, 5615a66a8ffSSimon Glass false, &dup); 5625a66a8ffSSimon Glass if (ret == -ENODEV) 5635a66a8ffSSimon Glass break; 5645a66a8ffSSimon Glass if (ret) 5655a66a8ffSSimon Glass return ret; 5665a66a8ffSSimon Glass } 5675a66a8ffSSimon Glass return seq; 5685a66a8ffSSimon Glass } 5695a66a8ffSSimon Glass 57002c07b37SSimon Glass int uclass_pre_probe_device(struct udevice *dev) 57183c7e434SSimon Glass { 57283c7e434SSimon Glass struct uclass_driver *uc_drv; 57302c07b37SSimon Glass int ret; 57402c07b37SSimon Glass 57502c07b37SSimon Glass uc_drv = dev->uclass->uc_drv; 57602c07b37SSimon Glass if (uc_drv->pre_probe) { 57702c07b37SSimon Glass ret = uc_drv->pre_probe(dev); 57802c07b37SSimon Glass if (ret) 57902c07b37SSimon Glass return ret; 58002c07b37SSimon Glass } 58183c7e434SSimon Glass 58283c7e434SSimon Glass if (!dev->parent) 58383c7e434SSimon Glass return 0; 58483c7e434SSimon Glass uc_drv = dev->parent->uclass->uc_drv; 58583c7e434SSimon Glass if (uc_drv->child_pre_probe) 58683c7e434SSimon Glass return uc_drv->child_pre_probe(dev); 58783c7e434SSimon Glass 58883c7e434SSimon Glass return 0; 58983c7e434SSimon Glass } 59083c7e434SSimon Glass 59154c5d08aSHeiko Schocher int uclass_post_probe_device(struct udevice *dev) 5926494d708SSimon Glass { 5936494d708SSimon Glass struct uclass_driver *uc_drv = dev->uclass->uc_drv; 5946494d708SSimon Glass 5956494d708SSimon Glass if (uc_drv->post_probe) 5966494d708SSimon Glass return uc_drv->post_probe(dev); 5976494d708SSimon Glass 5986494d708SSimon Glass return 0; 5996494d708SSimon Glass } 6006494d708SSimon Glass 6010a5804b5SMasahiro Yamada #if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE) 60254c5d08aSHeiko Schocher int uclass_pre_remove_device(struct udevice *dev) 6036494d708SSimon Glass { 6046494d708SSimon Glass struct uclass *uc; 6056494d708SSimon Glass int ret; 6066494d708SSimon Glass 6076494d708SSimon Glass uc = dev->uclass; 6086494d708SSimon Glass if (uc->uc_drv->pre_remove) { 6096494d708SSimon Glass ret = uc->uc_drv->pre_remove(dev); 6106494d708SSimon Glass if (ret) 6116494d708SSimon Glass return ret; 6126494d708SSimon Glass } 6136494d708SSimon Glass 6146494d708SSimon Glass return 0; 6156494d708SSimon Glass } 6167f9875e7SSimon Glass #endif 617