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> 116494d708SSimon Glass #include <errno.h> 126494d708SSimon Glass #include <malloc.h> 136494d708SSimon Glass #include <dm/device.h> 146494d708SSimon Glass #include <dm/device-internal.h> 156494d708SSimon Glass #include <dm/lists.h> 166494d708SSimon Glass #include <dm/uclass.h> 176494d708SSimon Glass #include <dm/uclass-internal.h> 186494d708SSimon Glass #include <dm/util.h> 196494d708SSimon Glass 206494d708SSimon Glass DECLARE_GLOBAL_DATA_PTR; 216494d708SSimon Glass 226494d708SSimon Glass struct uclass *uclass_find(enum uclass_id key) 236494d708SSimon Glass { 246494d708SSimon Glass struct uclass *uc; 256494d708SSimon Glass 26c910e2e2SSimon Glass if (!gd->dm_root) 27c910e2e2SSimon Glass return NULL; 286494d708SSimon Glass /* 296494d708SSimon Glass * TODO(sjg@chromium.org): Optimise this, perhaps moving the found 306494d708SSimon Glass * node to the start of the list, or creating a linear array mapping 316494d708SSimon Glass * id to node. 326494d708SSimon Glass */ 336494d708SSimon Glass list_for_each_entry(uc, &gd->uclass_root, sibling_node) { 346494d708SSimon Glass if (uc->uc_drv->id == key) 356494d708SSimon Glass return uc; 366494d708SSimon Glass } 376494d708SSimon Glass 386494d708SSimon Glass return NULL; 396494d708SSimon Glass } 406494d708SSimon Glass 416494d708SSimon Glass /** 426494d708SSimon Glass * uclass_add() - Create new uclass in list 436494d708SSimon Glass * @id: Id number to create 446494d708SSimon Glass * @ucp: Returns pointer to uclass, or NULL on error 456494d708SSimon Glass * @return 0 on success, -ve on error 466494d708SSimon Glass * 476494d708SSimon Glass * The new uclass is added to the list. There must be only one uclass for 486494d708SSimon Glass * each id. 496494d708SSimon Glass */ 506494d708SSimon Glass static int uclass_add(enum uclass_id id, struct uclass **ucp) 516494d708SSimon Glass { 526494d708SSimon Glass struct uclass_driver *uc_drv; 536494d708SSimon Glass struct uclass *uc; 546494d708SSimon Glass int ret; 556494d708SSimon Glass 566494d708SSimon Glass *ucp = NULL; 576494d708SSimon Glass uc_drv = lists_uclass_lookup(id); 586494d708SSimon Glass if (!uc_drv) { 59643e6902SMasahiro Yamada debug("Cannot find uclass for id %d: please add the UCLASS_DRIVER() declaration for this UCLASS_... id\n", 606494d708SSimon Glass id); 616494d708SSimon Glass return -ENOENT; 626494d708SSimon Glass } 636494d708SSimon Glass uc = calloc(1, sizeof(*uc)); 646494d708SSimon Glass if (!uc) 656494d708SSimon Glass return -ENOMEM; 666494d708SSimon Glass if (uc_drv->priv_auto_alloc_size) { 676494d708SSimon Glass uc->priv = calloc(1, uc_drv->priv_auto_alloc_size); 686494d708SSimon Glass if (!uc->priv) { 696494d708SSimon Glass ret = -ENOMEM; 706494d708SSimon Glass goto fail_mem; 716494d708SSimon Glass } 726494d708SSimon Glass } 736494d708SSimon Glass uc->uc_drv = uc_drv; 746494d708SSimon Glass INIT_LIST_HEAD(&uc->sibling_node); 756494d708SSimon Glass INIT_LIST_HEAD(&uc->dev_head); 7689876a55SSimon Glass list_add(&uc->sibling_node, &DM_UCLASS_ROOT_NON_CONST); 776494d708SSimon Glass 786494d708SSimon Glass if (uc_drv->init) { 796494d708SSimon Glass ret = uc_drv->init(uc); 806494d708SSimon Glass if (ret) 816494d708SSimon Glass goto fail; 826494d708SSimon Glass } 836494d708SSimon Glass 846494d708SSimon Glass *ucp = uc; 856494d708SSimon Glass 866494d708SSimon Glass return 0; 876494d708SSimon Glass fail: 886494d708SSimon Glass if (uc_drv->priv_auto_alloc_size) { 896494d708SSimon Glass free(uc->priv); 906494d708SSimon Glass uc->priv = NULL; 916494d708SSimon Glass } 926494d708SSimon Glass list_del(&uc->sibling_node); 936494d708SSimon Glass fail_mem: 946494d708SSimon Glass free(uc); 956494d708SSimon Glass 966494d708SSimon Glass return ret; 976494d708SSimon Glass } 986494d708SSimon Glass 996494d708SSimon Glass int uclass_destroy(struct uclass *uc) 1006494d708SSimon Glass { 1016494d708SSimon Glass struct uclass_driver *uc_drv; 10207d260e0SSimon Glass struct udevice *dev; 1036494d708SSimon Glass int ret; 1046494d708SSimon Glass 10507d260e0SSimon Glass /* 10607d260e0SSimon Glass * We cannot use list_for_each_entry_safe() here. If a device in this 10707d260e0SSimon Glass * uclass has a child device also in this uclass, it will be also be 10807d260e0SSimon Glass * unbound (by the recursion in the call to device_unbind() below). 10907d260e0SSimon Glass * We can loop until the list is empty. 11007d260e0SSimon Glass */ 11107d260e0SSimon Glass while (!list_empty(&uc->dev_head)) { 11207d260e0SSimon Glass dev = list_first_entry(&uc->dev_head, struct udevice, 11307d260e0SSimon Glass uclass_node); 1146494d708SSimon Glass ret = device_remove(dev); 1156494d708SSimon Glass if (ret) 1166494d708SSimon Glass return ret; 1176494d708SSimon Glass ret = device_unbind(dev); 1186494d708SSimon Glass if (ret) 1196494d708SSimon Glass return ret; 1206494d708SSimon Glass } 1216494d708SSimon Glass 1226494d708SSimon Glass uc_drv = uc->uc_drv; 1236494d708SSimon Glass if (uc_drv->destroy) 1246494d708SSimon Glass uc_drv->destroy(uc); 1256494d708SSimon Glass list_del(&uc->sibling_node); 1266494d708SSimon Glass if (uc_drv->priv_auto_alloc_size) 1276494d708SSimon Glass free(uc->priv); 1286494d708SSimon Glass free(uc); 1296494d708SSimon Glass 1306494d708SSimon Glass return 0; 1316494d708SSimon Glass } 1326494d708SSimon Glass 1336494d708SSimon Glass int uclass_get(enum uclass_id id, struct uclass **ucp) 1346494d708SSimon Glass { 1356494d708SSimon Glass struct uclass *uc; 1366494d708SSimon Glass 1376494d708SSimon Glass *ucp = NULL; 1386494d708SSimon Glass uc = uclass_find(id); 1396494d708SSimon Glass if (!uc) 1406494d708SSimon Glass return uclass_add(id, ucp); 1416494d708SSimon Glass *ucp = uc; 1426494d708SSimon Glass 1436494d708SSimon Glass return 0; 1446494d708SSimon Glass } 1456494d708SSimon Glass 14654c5d08aSHeiko Schocher int uclass_find_device(enum uclass_id id, int index, struct udevice **devp) 1476494d708SSimon Glass { 1486494d708SSimon Glass struct uclass *uc; 14954c5d08aSHeiko Schocher struct udevice *dev; 1506494d708SSimon Glass int ret; 1516494d708SSimon Glass 1526494d708SSimon Glass *devp = NULL; 1536494d708SSimon Glass ret = uclass_get(id, &uc); 1546494d708SSimon Glass if (ret) 1556494d708SSimon Glass return ret; 1562fda14aeSSimon Glass if (list_empty(&uc->dev_head)) 1572fda14aeSSimon Glass return -ENODEV; 1586494d708SSimon Glass 1596494d708SSimon Glass list_for_each_entry(dev, &uc->dev_head, uclass_node) { 1606494d708SSimon Glass if (!index--) { 1616494d708SSimon Glass *devp = dev; 1626494d708SSimon Glass return 0; 1636494d708SSimon Glass } 1646494d708SSimon Glass } 1656494d708SSimon Glass 1666494d708SSimon Glass return -ENODEV; 1676494d708SSimon Glass } 1686494d708SSimon Glass 169c1d6f919SPrzemyslaw Marczak int uclass_find_first_device(enum uclass_id id, struct udevice **devp) 170c1d6f919SPrzemyslaw Marczak { 171c1d6f919SPrzemyslaw Marczak struct uclass *uc; 172c1d6f919SPrzemyslaw Marczak int ret; 173c1d6f919SPrzemyslaw Marczak 174c1d6f919SPrzemyslaw Marczak *devp = NULL; 175c1d6f919SPrzemyslaw Marczak ret = uclass_get(id, &uc); 176c1d6f919SPrzemyslaw Marczak if (ret) 177c1d6f919SPrzemyslaw Marczak return ret; 178c1d6f919SPrzemyslaw Marczak if (list_empty(&uc->dev_head)) 179c1d6f919SPrzemyslaw Marczak return 0; 180c1d6f919SPrzemyslaw Marczak 181c1d6f919SPrzemyslaw Marczak *devp = list_first_entry(&uc->dev_head, struct udevice, uclass_node); 182c1d6f919SPrzemyslaw Marczak 183c1d6f919SPrzemyslaw Marczak return 0; 184c1d6f919SPrzemyslaw Marczak } 185c1d6f919SPrzemyslaw Marczak 186c1d6f919SPrzemyslaw Marczak int uclass_find_next_device(struct udevice **devp) 187c1d6f919SPrzemyslaw Marczak { 188c1d6f919SPrzemyslaw Marczak struct udevice *dev = *devp; 189c1d6f919SPrzemyslaw Marczak 190c1d6f919SPrzemyslaw Marczak *devp = NULL; 191c1d6f919SPrzemyslaw Marczak if (list_is_last(&dev->uclass_node, &dev->uclass->dev_head)) 192c1d6f919SPrzemyslaw Marczak return 0; 193c1d6f919SPrzemyslaw Marczak 194c1d6f919SPrzemyslaw Marczak *devp = list_entry(dev->uclass_node.next, struct udevice, uclass_node); 195c1d6f919SPrzemyslaw Marczak 196c1d6f919SPrzemyslaw Marczak return 0; 197c1d6f919SPrzemyslaw Marczak } 198c1d6f919SPrzemyslaw Marczak 199e0735a4cSPrzemyslaw Marczak int uclass_find_device_by_name(enum uclass_id id, const char *name, 200e0735a4cSPrzemyslaw Marczak struct udevice **devp) 201e0735a4cSPrzemyslaw Marczak { 202e0735a4cSPrzemyslaw Marczak struct uclass *uc; 203e0735a4cSPrzemyslaw Marczak struct udevice *dev; 204e0735a4cSPrzemyslaw Marczak int ret; 205e0735a4cSPrzemyslaw Marczak 206e0735a4cSPrzemyslaw Marczak *devp = NULL; 207e0735a4cSPrzemyslaw Marczak if (!name) 208e0735a4cSPrzemyslaw Marczak return -EINVAL; 209e0735a4cSPrzemyslaw Marczak ret = uclass_get(id, &uc); 210e0735a4cSPrzemyslaw Marczak if (ret) 211e0735a4cSPrzemyslaw Marczak return ret; 212e0735a4cSPrzemyslaw Marczak 213e0735a4cSPrzemyslaw Marczak list_for_each_entry(dev, &uc->dev_head, uclass_node) { 214e0735a4cSPrzemyslaw Marczak if (!strncmp(dev->name, name, strlen(name))) { 215e0735a4cSPrzemyslaw Marczak *devp = dev; 216e0735a4cSPrzemyslaw Marczak return 0; 217e0735a4cSPrzemyslaw Marczak } 218e0735a4cSPrzemyslaw Marczak } 219e0735a4cSPrzemyslaw Marczak 220e0735a4cSPrzemyslaw Marczak return -ENODEV; 221e0735a4cSPrzemyslaw Marczak } 222e0735a4cSPrzemyslaw Marczak 2235a66a8ffSSimon Glass int uclass_find_device_by_seq(enum uclass_id id, int seq_or_req_seq, 2245a66a8ffSSimon Glass bool find_req_seq, struct udevice **devp) 2255a66a8ffSSimon Glass { 2265a66a8ffSSimon Glass struct uclass *uc; 2275a66a8ffSSimon Glass struct udevice *dev; 2285a66a8ffSSimon Glass int ret; 2295a66a8ffSSimon Glass 2305a66a8ffSSimon Glass *devp = NULL; 2315a66a8ffSSimon Glass debug("%s: %d %d\n", __func__, find_req_seq, seq_or_req_seq); 2325a66a8ffSSimon Glass if (seq_or_req_seq == -1) 2335a66a8ffSSimon Glass return -ENODEV; 2345a66a8ffSSimon Glass ret = uclass_get(id, &uc); 2355a66a8ffSSimon Glass if (ret) 2365a66a8ffSSimon Glass return ret; 2375a66a8ffSSimon Glass 2385a66a8ffSSimon Glass list_for_each_entry(dev, &uc->dev_head, uclass_node) { 2395a66a8ffSSimon Glass debug(" - %d %d\n", dev->req_seq, dev->seq); 2405a66a8ffSSimon Glass if ((find_req_seq ? dev->req_seq : dev->seq) == 2415a66a8ffSSimon Glass seq_or_req_seq) { 2425a66a8ffSSimon Glass *devp = dev; 2435a66a8ffSSimon Glass debug(" - found\n"); 2445a66a8ffSSimon Glass return 0; 2455a66a8ffSSimon Glass } 2465a66a8ffSSimon Glass } 2475a66a8ffSSimon Glass debug(" - not found\n"); 2485a66a8ffSSimon Glass 2495a66a8ffSSimon Glass return -ENODEV; 2505a66a8ffSSimon Glass } 2515a66a8ffSSimon Glass 252f4cdead2SSimon Glass static int uclass_find_device_by_of_offset(enum uclass_id id, int node, 253f4cdead2SSimon Glass struct udevice **devp) 254f4cdead2SSimon Glass { 255f4cdead2SSimon Glass struct uclass *uc; 256f4cdead2SSimon Glass struct udevice *dev; 257f4cdead2SSimon Glass int ret; 258f4cdead2SSimon Glass 259f4cdead2SSimon Glass *devp = NULL; 260f4cdead2SSimon Glass if (node < 0) 261f4cdead2SSimon Glass return -ENODEV; 262f4cdead2SSimon Glass ret = uclass_get(id, &uc); 263f4cdead2SSimon Glass if (ret) 264f4cdead2SSimon Glass return ret; 265f4cdead2SSimon Glass 266f4cdead2SSimon Glass list_for_each_entry(dev, &uc->dev_head, uclass_node) { 267f4cdead2SSimon Glass if (dev->of_offset == node) { 268f4cdead2SSimon Glass *devp = dev; 269f4cdead2SSimon Glass return 0; 270f4cdead2SSimon Glass } 271f4cdead2SSimon Glass } 272f4cdead2SSimon Glass 273f4cdead2SSimon Glass return -ENODEV; 274f4cdead2SSimon Glass } 275f4cdead2SSimon Glass 276d82ba4c0SSimon Glass static int uclass_find_device_by_phandle(enum uclass_id id, 277d82ba4c0SSimon Glass struct udevice *parent, 278d82ba4c0SSimon Glass const char *name, 279d82ba4c0SSimon Glass struct udevice **devp) 280d82ba4c0SSimon Glass { 281d82ba4c0SSimon Glass struct udevice *dev; 282d82ba4c0SSimon Glass struct uclass *uc; 283d82ba4c0SSimon Glass int find_phandle; 284d82ba4c0SSimon Glass int ret; 285d82ba4c0SSimon Glass 286d82ba4c0SSimon Glass *devp = NULL; 287d82ba4c0SSimon Glass find_phandle = fdtdec_get_int(gd->fdt_blob, parent->of_offset, name, 288d82ba4c0SSimon Glass -1); 289d82ba4c0SSimon Glass if (find_phandle <= 0) 290d82ba4c0SSimon Glass return -ENOENT; 291d82ba4c0SSimon Glass ret = uclass_get(id, &uc); 292d82ba4c0SSimon Glass if (ret) 293d82ba4c0SSimon Glass return ret; 294d82ba4c0SSimon Glass 295d82ba4c0SSimon Glass list_for_each_entry(dev, &uc->dev_head, uclass_node) { 296d82ba4c0SSimon Glass uint phandle = fdt_get_phandle(gd->fdt_blob, dev->of_offset); 297d82ba4c0SSimon Glass 298d82ba4c0SSimon Glass if (phandle == find_phandle) { 299d82ba4c0SSimon Glass *devp = dev; 300d82ba4c0SSimon Glass return 0; 301d82ba4c0SSimon Glass } 302d82ba4c0SSimon Glass } 303d82ba4c0SSimon Glass 304d82ba4c0SSimon Glass return -ENODEV; 305d82ba4c0SSimon Glass } 306d82ba4c0SSimon Glass 307794d5219SPrzemyslaw Marczak int uclass_get_device_tail(struct udevice *dev, int ret, 3089ca296a1SSimon Glass struct udevice **devp) 3096494d708SSimon Glass { 3106494d708SSimon Glass if (ret) 3116494d708SSimon Glass return ret; 3126494d708SSimon Glass 313f66529f9SSimon Glass assert(dev); 3146494d708SSimon Glass ret = device_probe(dev); 3156494d708SSimon Glass if (ret) 3166494d708SSimon Glass return ret; 3176494d708SSimon Glass 3186494d708SSimon Glass *devp = dev; 3196494d708SSimon Glass 3206494d708SSimon Glass return 0; 3216494d708SSimon Glass } 3226494d708SSimon Glass 3239ca296a1SSimon Glass int uclass_get_device(enum uclass_id id, int index, struct udevice **devp) 3249ca296a1SSimon Glass { 3259ca296a1SSimon Glass struct udevice *dev; 3269ca296a1SSimon Glass int ret; 3279ca296a1SSimon Glass 3289ca296a1SSimon Glass *devp = NULL; 3299ca296a1SSimon Glass ret = uclass_find_device(id, index, &dev); 3309ca296a1SSimon Glass return uclass_get_device_tail(dev, ret, devp); 3319ca296a1SSimon Glass } 3329ca296a1SSimon Glass 333b7af1a2dSPrzemyslaw Marczak int uclass_get_device_by_name(enum uclass_id id, const char *name, 334b7af1a2dSPrzemyslaw Marczak struct udevice **devp) 335b7af1a2dSPrzemyslaw Marczak { 336b7af1a2dSPrzemyslaw Marczak struct udevice *dev; 337b7af1a2dSPrzemyslaw Marczak int ret; 338b7af1a2dSPrzemyslaw Marczak 339b7af1a2dSPrzemyslaw Marczak *devp = NULL; 340b7af1a2dSPrzemyslaw Marczak ret = uclass_find_device_by_name(id, name, &dev); 341b7af1a2dSPrzemyslaw Marczak return uclass_get_device_tail(dev, ret, devp); 342b7af1a2dSPrzemyslaw Marczak } 343b7af1a2dSPrzemyslaw Marczak 3445a66a8ffSSimon Glass int uclass_get_device_by_seq(enum uclass_id id, int seq, struct udevice **devp) 3455a66a8ffSSimon Glass { 3465a66a8ffSSimon Glass struct udevice *dev; 3475a66a8ffSSimon Glass int ret; 3485a66a8ffSSimon Glass 3495a66a8ffSSimon Glass *devp = NULL; 3505a66a8ffSSimon Glass ret = uclass_find_device_by_seq(id, seq, false, &dev); 3515a66a8ffSSimon Glass if (ret == -ENODEV) { 3525a66a8ffSSimon Glass /* 3535a66a8ffSSimon Glass * We didn't find it in probed devices. See if there is one 3545a66a8ffSSimon Glass * that will request this seq if probed. 3555a66a8ffSSimon Glass */ 3565a66a8ffSSimon Glass ret = uclass_find_device_by_seq(id, seq, true, &dev); 3575a66a8ffSSimon Glass } 3585a66a8ffSSimon Glass return uclass_get_device_tail(dev, ret, devp); 3595a66a8ffSSimon Glass } 3605a66a8ffSSimon Glass 361f4cdead2SSimon Glass int uclass_get_device_by_of_offset(enum uclass_id id, int node, 362f4cdead2SSimon Glass struct udevice **devp) 363f4cdead2SSimon Glass { 364f4cdead2SSimon Glass struct udevice *dev; 365f4cdead2SSimon Glass int ret; 366f4cdead2SSimon Glass 367f4cdead2SSimon Glass *devp = NULL; 368f4cdead2SSimon Glass ret = uclass_find_device_by_of_offset(id, node, &dev); 369f4cdead2SSimon Glass return uclass_get_device_tail(dev, ret, devp); 370f4cdead2SSimon Glass } 371f4cdead2SSimon Glass 372d82ba4c0SSimon Glass int uclass_get_device_by_phandle(enum uclass_id id, struct udevice *parent, 373d82ba4c0SSimon Glass const char *name, struct udevice **devp) 374d82ba4c0SSimon Glass { 375d82ba4c0SSimon Glass struct udevice *dev; 376d82ba4c0SSimon Glass int ret; 377d82ba4c0SSimon Glass 378d82ba4c0SSimon Glass *devp = NULL; 379d82ba4c0SSimon Glass ret = uclass_find_device_by_phandle(id, parent, name, &dev); 380d82ba4c0SSimon Glass return uclass_get_device_tail(dev, ret, devp); 381d82ba4c0SSimon Glass } 382d82ba4c0SSimon Glass 38354c5d08aSHeiko Schocher int uclass_first_device(enum uclass_id id, struct udevice **devp) 3846494d708SSimon Glass { 38554c5d08aSHeiko Schocher struct udevice *dev; 3866494d708SSimon Glass int ret; 3876494d708SSimon Glass 3886494d708SSimon Glass *devp = NULL; 389c1d6f919SPrzemyslaw Marczak ret = uclass_find_first_device(id, &dev); 390f66529f9SSimon Glass if (!dev) 391f66529f9SSimon Glass return 0; 392c1d6f919SPrzemyslaw Marczak return uclass_get_device_tail(dev, ret, devp); 3936494d708SSimon Glass } 3946494d708SSimon Glass 39554c5d08aSHeiko Schocher int uclass_next_device(struct udevice **devp) 3966494d708SSimon Glass { 39754c5d08aSHeiko Schocher struct udevice *dev = *devp; 3986494d708SSimon Glass int ret; 3996494d708SSimon Glass 4006494d708SSimon Glass *devp = NULL; 401c1d6f919SPrzemyslaw Marczak ret = uclass_find_next_device(&dev); 402f66529f9SSimon Glass if (!dev) 403f66529f9SSimon Glass return 0; 404c1d6f919SPrzemyslaw Marczak return uclass_get_device_tail(dev, ret, devp); 4056494d708SSimon Glass } 4066494d708SSimon Glass 40754c5d08aSHeiko Schocher int uclass_bind_device(struct udevice *dev) 4086494d708SSimon Glass { 4096494d708SSimon Glass struct uclass *uc; 4106494d708SSimon Glass int ret; 4116494d708SSimon Glass 4126494d708SSimon Glass uc = dev->uclass; 4136494d708SSimon Glass list_add_tail(&dev->uclass_node, &uc->dev_head); 4146494d708SSimon Glass 415081f2fcbSSimon Glass if (dev->parent) { 416081f2fcbSSimon Glass struct uclass_driver *uc_drv = dev->parent->uclass->uc_drv; 417081f2fcbSSimon Glass 418081f2fcbSSimon Glass if (uc_drv->child_post_bind) { 419081f2fcbSSimon Glass ret = uc_drv->child_post_bind(dev); 420081f2fcbSSimon Glass if (ret) 421081f2fcbSSimon Glass goto err; 422081f2fcbSSimon Glass } 423081f2fcbSSimon Glass } 4246494d708SSimon Glass if (uc->uc_drv->post_bind) { 4256494d708SSimon Glass ret = uc->uc_drv->post_bind(dev); 426081f2fcbSSimon Glass if (ret) 427081f2fcbSSimon Glass goto err; 4286494d708SSimon Glass } 4296494d708SSimon Glass 4306494d708SSimon Glass return 0; 431081f2fcbSSimon Glass err: 432081f2fcbSSimon Glass /* There is no need to undo the parent's post_bind call */ 433081f2fcbSSimon Glass list_del(&dev->uclass_node); 434081f2fcbSSimon Glass 435081f2fcbSSimon Glass return ret; 4366494d708SSimon Glass } 4376494d708SSimon Glass 438*0a5804b5SMasahiro Yamada #if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE) 43954c5d08aSHeiko Schocher int uclass_unbind_device(struct udevice *dev) 4406494d708SSimon Glass { 4416494d708SSimon Glass struct uclass *uc; 4426494d708SSimon Glass int ret; 4436494d708SSimon Glass 4446494d708SSimon Glass uc = dev->uclass; 4456494d708SSimon Glass if (uc->uc_drv->pre_unbind) { 4466494d708SSimon Glass ret = uc->uc_drv->pre_unbind(dev); 4476494d708SSimon Glass if (ret) 4486494d708SSimon Glass return ret; 4496494d708SSimon Glass } 4506494d708SSimon Glass 4516494d708SSimon Glass list_del(&dev->uclass_node); 4526494d708SSimon Glass return 0; 4536494d708SSimon Glass } 4547f9875e7SSimon Glass #endif 4556494d708SSimon Glass 4565a66a8ffSSimon Glass int uclass_resolve_seq(struct udevice *dev) 4575a66a8ffSSimon Glass { 4585a66a8ffSSimon Glass struct udevice *dup; 4595a66a8ffSSimon Glass int seq; 4605a66a8ffSSimon Glass int ret; 4615a66a8ffSSimon Glass 4625a66a8ffSSimon Glass assert(dev->seq == -1); 4635a66a8ffSSimon Glass ret = uclass_find_device_by_seq(dev->uclass->uc_drv->id, dev->req_seq, 4645a66a8ffSSimon Glass false, &dup); 4655a66a8ffSSimon Glass if (!ret) { 4665a66a8ffSSimon Glass dm_warn("Device '%s': seq %d is in use by '%s'\n", 4675a66a8ffSSimon Glass dev->name, dev->req_seq, dup->name); 4685a66a8ffSSimon Glass } else if (ret == -ENODEV) { 4695a66a8ffSSimon Glass /* Our requested sequence number is available */ 4705a66a8ffSSimon Glass if (dev->req_seq != -1) 4715a66a8ffSSimon Glass return dev->req_seq; 4725a66a8ffSSimon Glass } else { 4735a66a8ffSSimon Glass return ret; 4745a66a8ffSSimon Glass } 4755a66a8ffSSimon Glass 4765a66a8ffSSimon Glass for (seq = 0; seq < DM_MAX_SEQ; seq++) { 4775a66a8ffSSimon Glass ret = uclass_find_device_by_seq(dev->uclass->uc_drv->id, seq, 4785a66a8ffSSimon Glass false, &dup); 4795a66a8ffSSimon Glass if (ret == -ENODEV) 4805a66a8ffSSimon Glass break; 4815a66a8ffSSimon Glass if (ret) 4825a66a8ffSSimon Glass return ret; 4835a66a8ffSSimon Glass } 4845a66a8ffSSimon Glass return seq; 4855a66a8ffSSimon Glass } 4865a66a8ffSSimon Glass 48702c07b37SSimon Glass int uclass_pre_probe_device(struct udevice *dev) 48883c7e434SSimon Glass { 48983c7e434SSimon Glass struct uclass_driver *uc_drv; 49002c07b37SSimon Glass int ret; 49102c07b37SSimon Glass 49202c07b37SSimon Glass uc_drv = dev->uclass->uc_drv; 49302c07b37SSimon Glass if (uc_drv->pre_probe) { 49402c07b37SSimon Glass ret = uc_drv->pre_probe(dev); 49502c07b37SSimon Glass if (ret) 49602c07b37SSimon Glass return ret; 49702c07b37SSimon Glass } 49883c7e434SSimon Glass 49983c7e434SSimon Glass if (!dev->parent) 50083c7e434SSimon Glass return 0; 50183c7e434SSimon Glass uc_drv = dev->parent->uclass->uc_drv; 50283c7e434SSimon Glass if (uc_drv->child_pre_probe) 50383c7e434SSimon Glass return uc_drv->child_pre_probe(dev); 50483c7e434SSimon Glass 50583c7e434SSimon Glass return 0; 50683c7e434SSimon Glass } 50783c7e434SSimon Glass 50854c5d08aSHeiko Schocher int uclass_post_probe_device(struct udevice *dev) 5096494d708SSimon Glass { 5106494d708SSimon Glass struct uclass_driver *uc_drv = dev->uclass->uc_drv; 5116494d708SSimon Glass 5126494d708SSimon Glass if (uc_drv->post_probe) 5136494d708SSimon Glass return uc_drv->post_probe(dev); 5146494d708SSimon Glass 5156494d708SSimon Glass return 0; 5166494d708SSimon Glass } 5176494d708SSimon Glass 518*0a5804b5SMasahiro Yamada #if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE) 51954c5d08aSHeiko Schocher int uclass_pre_remove_device(struct udevice *dev) 5206494d708SSimon Glass { 5216494d708SSimon Glass struct uclass_driver *uc_drv; 5226494d708SSimon Glass struct uclass *uc; 5236494d708SSimon Glass int ret; 5246494d708SSimon Glass 5256494d708SSimon Glass uc = dev->uclass; 5266494d708SSimon Glass uc_drv = uc->uc_drv; 5276494d708SSimon Glass if (uc->uc_drv->pre_remove) { 5286494d708SSimon Glass ret = uc->uc_drv->pre_remove(dev); 5296494d708SSimon Glass if (ret) 5306494d708SSimon Glass return ret; 5316494d708SSimon Glass } 5326494d708SSimon Glass if (uc_drv->per_device_auto_alloc_size) { 5336494d708SSimon Glass free(dev->uclass_priv); 5346494d708SSimon Glass dev->uclass_priv = NULL; 5356494d708SSimon Glass } 5365a66a8ffSSimon Glass dev->seq = -1; 5376494d708SSimon Glass 5386494d708SSimon Glass return 0; 5396494d708SSimon Glass } 5407f9875e7SSimon Glass #endif 541