Tom Rini | 83d290c | 2018-05-06 17:58:06 -0400 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 2 | /* |
| 3 | * Device manager |
| 4 | * |
| 5 | * Copyright (c) 2013 Google, Inc |
| 6 | * |
| 7 | * (C) Copyright 2012 |
| 8 | * Pavel Herrmann <morpheus.ibis@gmail.com> |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 9 | */ |
| 10 | |
| 11 | #include <common.h> |
Simon Glass | 1eb69ae | 2019-11-14 12:57:39 -0700 | [diff] [blame] | 12 | #include <cpu_func.h> |
Simon Glass | 5b896ed | 2022-03-04 08:43:03 -0700 | [diff] [blame] | 13 | #include <event.h> |
Simon Glass | f7ae49f | 2020-05-10 11:40:05 -0600 | [diff] [blame] | 14 | #include <log.h> |
Simon Glass | 401d1c4 | 2020-10-30 21:38:53 -0600 | [diff] [blame] | 15 | #include <asm/global_data.h> |
Vignesh R | 7c61686 | 2016-07-06 09:58:55 +0530 | [diff] [blame] | 16 | #include <asm/io.h> |
Philipp Tomsich | f4fcba5 | 2018-01-08 13:59:18 +0100 | [diff] [blame] | 17 | #include <clk.h> |
Simon Glass | 5a66a8f | 2014-07-23 06:55:12 -0600 | [diff] [blame] | 18 | #include <fdtdec.h> |
Stefan Roese | ef5cd33 | 2015-09-02 07:41:12 +0200 | [diff] [blame] | 19 | #include <fdt_support.h> |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 20 | #include <malloc.h> |
Simon Glass | 90526e9 | 2020-05-10 11:39:56 -0600 | [diff] [blame] | 21 | #include <asm/cache.h> |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 22 | #include <dm/device.h> |
| 23 | #include <dm/device-internal.h> |
| 24 | #include <dm/lists.h> |
Mario Six | 29d11b8 | 2018-01-15 11:07:20 +0100 | [diff] [blame] | 25 | #include <dm/of_access.h> |
Masahiro Yamada | d90a5a3 | 2015-08-27 12:44:29 +0900 | [diff] [blame] | 26 | #include <dm/pinctrl.h> |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 27 | #include <dm/platdata.h> |
Simon Glass | 396e343 | 2017-05-18 20:09:05 -0600 | [diff] [blame] | 28 | #include <dm/read.h> |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 29 | #include <dm/uclass.h> |
| 30 | #include <dm/uclass-internal.h> |
| 31 | #include <dm/util.h> |
Mark Kettenis | 40dbf03 | 2021-10-23 16:58:01 +0200 | [diff] [blame] | 32 | #include <iommu.h> |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 33 | #include <linux/err.h> |
| 34 | #include <linux/list.h> |
Peng Fan | 3ad3077 | 2018-07-27 10:20:38 +0800 | [diff] [blame] | 35 | #include <power-domain.h> |
Simon Glass | 1e94b46 | 2023-09-14 18:21:46 -0600 | [diff] [blame] | 36 | #include <linux/printk.h> |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 37 | |
Simon Glass | 5a66a8f | 2014-07-23 06:55:12 -0600 | [diff] [blame] | 38 | DECLARE_GLOBAL_DATA_PTR; |
| 39 | |
Stephen Warren | daac3bf | 2016-05-11 15:26:24 -0600 | [diff] [blame] | 40 | static int device_bind_common(struct udevice *parent, const struct driver *drv, |
Simon Glass | caa4daa | 2020-12-03 16:55:18 -0700 | [diff] [blame] | 41 | const char *name, void *plat, |
Simon Glass | 7a61b0b | 2017-05-17 17:18:11 -0600 | [diff] [blame] | 42 | ulong driver_data, ofnode node, |
Simon Glass | 4f50086 | 2020-12-03 16:55:19 -0700 | [diff] [blame] | 43 | uint of_plat_size, struct udevice **devp) |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 44 | { |
Heiko Schocher | 54c5d08 | 2014-05-22 12:43:05 +0200 | [diff] [blame] | 45 | struct udevice *dev; |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 46 | struct uclass *uc; |
Przemyslaw Marczak | 5eaed88 | 2015-04-15 13:07:18 +0200 | [diff] [blame] | 47 | int size, ret = 0; |
Simon Glass | cd53e5b | 2020-12-16 21:20:09 -0700 | [diff] [blame] | 48 | bool auto_seq = true; |
Simon Glass | 89ba6d5 | 2020-12-22 19:30:29 -0700 | [diff] [blame] | 49 | void *ptr; |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 50 | |
Simon Glass | 1ef3af3 | 2021-03-15 17:25:15 +1300 | [diff] [blame] | 51 | if (CONFIG_IS_ENABLED(OF_PLATDATA_NO_BIND)) |
| 52 | return -ENOSYS; |
| 53 | |
Masahiro Yamada | e6cabe4 | 2015-08-27 12:44:28 +0900 | [diff] [blame] | 54 | if (devp) |
| 55 | *devp = NULL; |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 56 | if (!name) |
| 57 | return -EINVAL; |
| 58 | |
| 59 | ret = uclass_get(drv->id, &uc); |
Simon Glass | 3346c87 | 2015-08-30 16:55:16 -0600 | [diff] [blame] | 60 | if (ret) { |
| 61 | debug("Missing uclass for driver %s\n", drv->name); |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 62 | return ret; |
Simon Glass | 3346c87 | 2015-08-30 16:55:16 -0600 | [diff] [blame] | 63 | } |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 64 | |
Heiko Schocher | 54c5d08 | 2014-05-22 12:43:05 +0200 | [diff] [blame] | 65 | dev = calloc(1, sizeof(struct udevice)); |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 66 | if (!dev) |
| 67 | return -ENOMEM; |
| 68 | |
| 69 | INIT_LIST_HEAD(&dev->sibling_node); |
| 70 | INIT_LIST_HEAD(&dev->child_head); |
| 71 | INIT_LIST_HEAD(&dev->uclass_node); |
Simon Glass | 092d5c2 | 2022-03-27 14:26:19 -0600 | [diff] [blame] | 72 | #if CONFIG_IS_ENABLED(DEVRES) |
Masahiro Yamada | 608f26c | 2015-07-25 21:52:35 +0900 | [diff] [blame] | 73 | INIT_LIST_HEAD(&dev->devres_head); |
Masahiro Yamada | e2282d7 | 2015-07-25 21:52:37 +0900 | [diff] [blame] | 74 | #endif |
Simon Glass | 89ba6d5 | 2020-12-22 19:30:29 -0700 | [diff] [blame] | 75 | dev_set_plat(dev, plat); |
Stephen Warren | daac3bf | 2016-05-11 15:26:24 -0600 | [diff] [blame] | 76 | dev->driver_data = driver_data; |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 77 | dev->name = name; |
Simon Glass | f10643c | 2020-12-19 10:40:14 -0700 | [diff] [blame] | 78 | dev_set_ofnode(dev, node); |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 79 | dev->parent = parent; |
| 80 | dev->driver = drv; |
| 81 | dev->uclass = uc; |
Simon Glass | 5a66a8f | 2014-07-23 06:55:12 -0600 | [diff] [blame] | 82 | |
Simon Glass | 2462139 | 2020-12-19 10:40:09 -0700 | [diff] [blame] | 83 | dev->seq_ = -1; |
Jean-Jacques Hiblot | 3542ff2 | 2018-12-07 14:50:39 +0100 | [diff] [blame] | 84 | if (CONFIG_IS_ENABLED(DM_SEQ_ALIAS) && |
| 85 | (uc->uc_drv->flags & DM_UC_FLAG_SEQ_ALIAS)) { |
Simon Glass | 36fa61d | 2015-02-27 22:06:30 -0700 | [diff] [blame] | 86 | /* |
Stefan Roese | 770eb30 | 2016-03-16 09:58:01 +0100 | [diff] [blame] | 87 | * Some devices, such as a SPI bus, I2C bus and serial ports |
| 88 | * are numbered using aliases. |
Stefan Roese | 770eb30 | 2016-03-16 09:58:01 +0100 | [diff] [blame] | 89 | */ |
Simon Glass | 6d65ac3 | 2020-07-09 18:39:24 -0600 | [diff] [blame] | 90 | if (CONFIG_IS_ENABLED(OF_CONTROL) && |
| 91 | !CONFIG_IS_ENABLED(OF_PLATDATA)) { |
Simon Glass | cd53e5b | 2020-12-16 21:20:09 -0700 | [diff] [blame] | 92 | if (uc->uc_drv->name && ofnode_valid(node)) { |
Simon Glass | 4bbaa88 | 2021-07-05 16:32:39 -0600 | [diff] [blame] | 93 | if (!dev_read_alias_seq(dev, &dev->seq_)) { |
Simon Glass | 7f20d1d | 2020-12-16 21:20:32 -0700 | [diff] [blame] | 94 | auto_seq = false; |
Simon Glass | 4bbaa88 | 2021-07-05 16:32:39 -0600 | [diff] [blame] | 95 | log_debug(" - seq=%d\n", dev->seq_); |
| 96 | } |
Simon Glass | cd53e5b | 2020-12-16 21:20:09 -0700 | [diff] [blame] | 97 | } |
Simon Glass | 9cc36a2 | 2015-01-25 08:27:05 -0700 | [diff] [blame] | 98 | } |
| 99 | } |
Simon Glass | 15a1196 | 2020-12-16 21:20:17 -0700 | [diff] [blame] | 100 | if (auto_seq && !(uc->uc_drv->flags & DM_UC_FLAG_NO_AUTO_SEQ)) |
Simon Glass | 2462139 | 2020-12-19 10:40:09 -0700 | [diff] [blame] | 101 | dev->seq_ = uclass_find_next_free_seq(uc); |
Simon Glass | 36fa61d | 2015-02-27 22:06:30 -0700 | [diff] [blame] | 102 | |
Simon Glass | 24fd7e3 | 2021-02-03 21:29:43 -0700 | [diff] [blame] | 103 | /* Check if we need to allocate plat */ |
Simon Glass | caa4daa | 2020-12-03 16:55:18 -0700 | [diff] [blame] | 104 | if (drv->plat_auto) { |
| 105 | bool alloc = !plat; |
Simon Glass | 9fa2819 | 2016-07-04 11:58:18 -0600 | [diff] [blame] | 106 | |
Simon Glass | 24fd7e3 | 2021-02-03 21:29:43 -0700 | [diff] [blame] | 107 | /* |
| 108 | * For of-platdata, we try use the existing data, but if |
| 109 | * plat_auto is larger, we must allocate a new space |
| 110 | */ |
Simon Glass | 9fa2819 | 2016-07-04 11:58:18 -0600 | [diff] [blame] | 111 | if (CONFIG_IS_ENABLED(OF_PLATDATA)) { |
Simon Glass | 24fd7e3 | 2021-02-03 21:29:43 -0700 | [diff] [blame] | 112 | if (of_plat_size) |
Simon Glass | 73466df | 2020-12-19 10:40:10 -0700 | [diff] [blame] | 113 | dev_or_flags(dev, DM_FLAG_OF_PLATDATA); |
Simon Glass | 24fd7e3 | 2021-02-03 21:29:43 -0700 | [diff] [blame] | 114 | if (of_plat_size < drv->plat_auto) |
| 115 | alloc = true; |
Simon Glass | 9fa2819 | 2016-07-04 11:58:18 -0600 | [diff] [blame] | 116 | } |
| 117 | if (alloc) { |
Simon Glass | 73466df | 2020-12-19 10:40:10 -0700 | [diff] [blame] | 118 | dev_or_flags(dev, DM_FLAG_ALLOC_PDATA); |
Simon Glass | 89ba6d5 | 2020-12-22 19:30:29 -0700 | [diff] [blame] | 119 | ptr = calloc(1, drv->plat_auto); |
| 120 | if (!ptr) { |
Simon Glass | 9fa2819 | 2016-07-04 11:58:18 -0600 | [diff] [blame] | 121 | ret = -ENOMEM; |
| 122 | goto fail_alloc1; |
| 123 | } |
Simon Glass | 24fd7e3 | 2021-02-03 21:29:43 -0700 | [diff] [blame] | 124 | |
| 125 | /* |
| 126 | * For of-platdata, copy the old plat into the new |
| 127 | * space |
| 128 | */ |
Simon Glass | 89ba6d5 | 2020-12-22 19:30:29 -0700 | [diff] [blame] | 129 | if (CONFIG_IS_ENABLED(OF_PLATDATA) && plat) |
| 130 | memcpy(ptr, plat, of_plat_size); |
| 131 | dev_set_plat(dev, ptr); |
Simon Glass | f8a8544 | 2015-01-25 08:27:00 -0700 | [diff] [blame] | 132 | } |
| 133 | } |
Simon Glass | cdc133b | 2015-01-25 08:27:01 -0700 | [diff] [blame] | 134 | |
Simon Glass | caa4daa | 2020-12-03 16:55:18 -0700 | [diff] [blame] | 135 | size = uc->uc_drv->per_device_plat_auto; |
Przemyslaw Marczak | 5eaed88 | 2015-04-15 13:07:18 +0200 | [diff] [blame] | 136 | if (size) { |
Simon Glass | 73466df | 2020-12-19 10:40:10 -0700 | [diff] [blame] | 137 | dev_or_flags(dev, DM_FLAG_ALLOC_UCLASS_PDATA); |
Simon Glass | 89ba6d5 | 2020-12-22 19:30:29 -0700 | [diff] [blame] | 138 | ptr = calloc(1, size); |
| 139 | if (!ptr) { |
Przemyslaw Marczak | 5eaed88 | 2015-04-15 13:07:18 +0200 | [diff] [blame] | 140 | ret = -ENOMEM; |
| 141 | goto fail_alloc2; |
| 142 | } |
Simon Glass | 89ba6d5 | 2020-12-22 19:30:29 -0700 | [diff] [blame] | 143 | dev_set_uclass_plat(dev, ptr); |
Przemyslaw Marczak | 5eaed88 | 2015-04-15 13:07:18 +0200 | [diff] [blame] | 144 | } |
| 145 | |
| 146 | if (parent) { |
Simon Glass | caa4daa | 2020-12-03 16:55:18 -0700 | [diff] [blame] | 147 | size = parent->driver->per_child_plat_auto; |
Simon Glass | 15421b7 | 2021-02-03 21:29:44 -0700 | [diff] [blame] | 148 | if (!size) |
Simon Glass | caa4daa | 2020-12-03 16:55:18 -0700 | [diff] [blame] | 149 | size = parent->uclass->uc_drv->per_child_plat_auto; |
Simon Glass | cdc133b | 2015-01-25 08:27:01 -0700 | [diff] [blame] | 150 | if (size) { |
Simon Glass | 73466df | 2020-12-19 10:40:10 -0700 | [diff] [blame] | 151 | dev_or_flags(dev, DM_FLAG_ALLOC_PARENT_PDATA); |
Simon Glass | 89ba6d5 | 2020-12-22 19:30:29 -0700 | [diff] [blame] | 152 | ptr = calloc(1, size); |
| 153 | if (!ptr) { |
Simon Glass | cdc133b | 2015-01-25 08:27:01 -0700 | [diff] [blame] | 154 | ret = -ENOMEM; |
Przemyslaw Marczak | 5eaed88 | 2015-04-15 13:07:18 +0200 | [diff] [blame] | 155 | goto fail_alloc3; |
Simon Glass | cdc133b | 2015-01-25 08:27:01 -0700 | [diff] [blame] | 156 | } |
Simon Glass | 89ba6d5 | 2020-12-22 19:30:29 -0700 | [diff] [blame] | 157 | dev_set_parent_plat(dev, ptr); |
Simon Glass | cdc133b | 2015-01-25 08:27:01 -0700 | [diff] [blame] | 158 | } |
Heinrich Schuchardt | f93a07d | 2020-02-15 21:38:48 +0100 | [diff] [blame] | 159 | /* put dev into parent's successor list */ |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 160 | list_add_tail(&dev->sibling_node, &parent->child_head); |
Heinrich Schuchardt | f93a07d | 2020-02-15 21:38:48 +0100 | [diff] [blame] | 161 | } |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 162 | |
| 163 | ret = uclass_bind_device(dev); |
| 164 | if (ret) |
Simon Glass | 72ebfe8 | 2015-01-25 08:26:59 -0700 | [diff] [blame] | 165 | goto fail_uclass_bind; |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 166 | |
| 167 | /* if we fail to bind we remove device from successors and free it */ |
| 168 | if (drv->bind) { |
| 169 | ret = drv->bind(dev); |
Simon Glass | 72ebfe8 | 2015-01-25 08:26:59 -0700 | [diff] [blame] | 170 | if (ret) |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 171 | goto fail_bind; |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 172 | } |
Simon Glass | 0118ce7 | 2015-01-25 08:27:03 -0700 | [diff] [blame] | 173 | if (parent && parent->driver->child_post_bind) { |
| 174 | ret = parent->driver->child_post_bind(dev); |
| 175 | if (ret) |
| 176 | goto fail_child_post_bind; |
| 177 | } |
Simon Glass | 20af3c0 | 2016-01-05 09:30:59 -0700 | [diff] [blame] | 178 | if (uc->uc_drv->post_bind) { |
| 179 | ret = uc->uc_drv->post_bind(dev); |
| 180 | if (ret) |
| 181 | goto fail_uclass_post_bind; |
| 182 | } |
Simon Glass | 0118ce7 | 2015-01-25 08:27:03 -0700 | [diff] [blame] | 183 | |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 184 | if (parent) |
Masahiro Yamada | ceb9190 | 2017-09-29 12:31:20 +0900 | [diff] [blame] | 185 | pr_debug("Bound device %s to %s\n", dev->name, parent->name); |
Masahiro Yamada | e6cabe4 | 2015-08-27 12:44:28 +0900 | [diff] [blame] | 186 | if (devp) |
| 187 | *devp = dev; |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 188 | |
Simon Glass | 73466df | 2020-12-19 10:40:10 -0700 | [diff] [blame] | 189 | dev_or_flags(dev, DM_FLAG_BOUND); |
Masahiro Yamada | aed1a4d | 2015-07-25 21:52:34 +0900 | [diff] [blame] | 190 | |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 191 | return 0; |
| 192 | |
Simon Glass | 20af3c0 | 2016-01-05 09:30:59 -0700 | [diff] [blame] | 193 | fail_uclass_post_bind: |
| 194 | /* There is no child unbind() method, so no clean-up required */ |
Simon Glass | 0118ce7 | 2015-01-25 08:27:03 -0700 | [diff] [blame] | 195 | fail_child_post_bind: |
Masahiro Yamada | 0a5804b | 2015-08-12 07:31:52 +0900 | [diff] [blame] | 196 | if (CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)) { |
Simon Glass | 5a87c41 | 2015-02-27 22:06:33 -0700 | [diff] [blame] | 197 | if (drv->unbind && drv->unbind(dev)) { |
| 198 | dm_warn("unbind() method failed on dev '%s' on error path\n", |
| 199 | dev->name); |
| 200 | } |
Simon Glass | 0118ce7 | 2015-01-25 08:27:03 -0700 | [diff] [blame] | 201 | } |
| 202 | |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 203 | fail_bind: |
Masahiro Yamada | 0a5804b | 2015-08-12 07:31:52 +0900 | [diff] [blame] | 204 | if (CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)) { |
Simon Glass | 5a87c41 | 2015-02-27 22:06:33 -0700 | [diff] [blame] | 205 | if (uclass_unbind_device(dev)) { |
| 206 | dm_warn("Failed to unbind dev '%s' on error path\n", |
| 207 | dev->name); |
| 208 | } |
Simon Glass | 72ebfe8 | 2015-01-25 08:26:59 -0700 | [diff] [blame] | 209 | } |
| 210 | fail_uclass_bind: |
Masahiro Yamada | 0a5804b | 2015-08-12 07:31:52 +0900 | [diff] [blame] | 211 | if (CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)) { |
Simon Glass | 5a87c41 | 2015-02-27 22:06:33 -0700 | [diff] [blame] | 212 | list_del(&dev->sibling_node); |
Simon Glass | 73466df | 2020-12-19 10:40:10 -0700 | [diff] [blame] | 213 | if (dev_get_flags(dev) & DM_FLAG_ALLOC_PARENT_PDATA) { |
Simon Glass | 89ba6d5 | 2020-12-22 19:30:29 -0700 | [diff] [blame] | 214 | free(dev_get_parent_plat(dev)); |
| 215 | dev_set_parent_plat(dev, NULL); |
Simon Glass | 5a87c41 | 2015-02-27 22:06:33 -0700 | [diff] [blame] | 216 | } |
Simon Glass | cdc133b | 2015-01-25 08:27:01 -0700 | [diff] [blame] | 217 | } |
Przemyslaw Marczak | 5eaed88 | 2015-04-15 13:07:18 +0200 | [diff] [blame] | 218 | fail_alloc3: |
Simon Glass | 15421b7 | 2021-02-03 21:29:44 -0700 | [diff] [blame] | 219 | if (CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)) { |
| 220 | if (dev_get_flags(dev) & DM_FLAG_ALLOC_UCLASS_PDATA) { |
| 221 | free(dev_get_uclass_plat(dev)); |
| 222 | dev_set_uclass_plat(dev, NULL); |
| 223 | } |
Przemyslaw Marczak | 5eaed88 | 2015-04-15 13:07:18 +0200 | [diff] [blame] | 224 | } |
Simon Glass | cdc133b | 2015-01-25 08:27:01 -0700 | [diff] [blame] | 225 | fail_alloc2: |
Simon Glass | 15421b7 | 2021-02-03 21:29:44 -0700 | [diff] [blame] | 226 | if (CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)) { |
| 227 | if (dev_get_flags(dev) & DM_FLAG_ALLOC_PDATA) { |
| 228 | free(dev_get_plat(dev)); |
| 229 | dev_set_plat(dev, NULL); |
| 230 | } |
Simon Glass | f8a8544 | 2015-01-25 08:27:00 -0700 | [diff] [blame] | 231 | } |
| 232 | fail_alloc1: |
Masahiro Yamada | 608f26c | 2015-07-25 21:52:35 +0900 | [diff] [blame] | 233 | devres_release_all(dev); |
| 234 | |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 235 | free(dev); |
Simon Glass | 72ebfe8 | 2015-01-25 08:26:59 -0700 | [diff] [blame] | 236 | |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 237 | return ret; |
| 238 | } |
| 239 | |
Stephen Warren | daac3bf | 2016-05-11 15:26:24 -0600 | [diff] [blame] | 240 | int device_bind_with_driver_data(struct udevice *parent, |
| 241 | const struct driver *drv, const char *name, |
Simon Glass | 396e343 | 2017-05-18 20:09:05 -0600 | [diff] [blame] | 242 | ulong driver_data, ofnode node, |
Stephen Warren | daac3bf | 2016-05-11 15:26:24 -0600 | [diff] [blame] | 243 | struct udevice **devp) |
| 244 | { |
Simon Glass | 396e343 | 2017-05-18 20:09:05 -0600 | [diff] [blame] | 245 | return device_bind_common(parent, drv, name, NULL, driver_data, node, |
| 246 | 0, devp); |
Stephen Warren | daac3bf | 2016-05-11 15:26:24 -0600 | [diff] [blame] | 247 | } |
| 248 | |
Simon Glass | 734206d | 2020-11-28 17:50:01 -0700 | [diff] [blame] | 249 | int device_bind(struct udevice *parent, const struct driver *drv, |
Simon Glass | caa4daa | 2020-12-03 16:55:18 -0700 | [diff] [blame] | 250 | const char *name, void *plat, ofnode node, |
Simon Glass | 734206d | 2020-11-28 17:50:01 -0700 | [diff] [blame] | 251 | struct udevice **devp) |
Simon Glass | d677b00 | 2018-06-11 13:07:15 -0600 | [diff] [blame] | 252 | { |
Simon Glass | caa4daa | 2020-12-03 16:55:18 -0700 | [diff] [blame] | 253 | return device_bind_common(parent, drv, name, plat, 0, node, 0, |
Simon Glass | d677b00 | 2018-06-11 13:07:15 -0600 | [diff] [blame] | 254 | devp); |
| 255 | } |
| 256 | |
Simon Glass | 00606d7 | 2014-07-23 06:55:03 -0600 | [diff] [blame] | 257 | int device_bind_by_name(struct udevice *parent, bool pre_reloc_only, |
Simon Glass | a294ead | 2020-10-03 11:31:33 -0600 | [diff] [blame] | 258 | const struct driver_info *info, struct udevice **devp) |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 259 | { |
| 260 | struct driver *drv; |
Simon Glass | 4f50086 | 2020-12-03 16:55:19 -0700 | [diff] [blame] | 261 | uint plat_size = 0; |
Walter Lozano | fed0f89 | 2020-06-25 01:10:11 -0300 | [diff] [blame] | 262 | int ret; |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 263 | |
| 264 | drv = lists_driver_lookup_name(info->name); |
| 265 | if (!drv) |
| 266 | return -ENOENT; |
Simon Glass | 00606d7 | 2014-07-23 06:55:03 -0600 | [diff] [blame] | 267 | if (pre_reloc_only && !(drv->flags & DM_FLAG_PRE_RELOC)) |
| 268 | return -EPERM; |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 269 | |
Simon Glass | 9fa2819 | 2016-07-04 11:58:18 -0600 | [diff] [blame] | 270 | #if CONFIG_IS_ENABLED(OF_PLATDATA) |
Simon Glass | 4f50086 | 2020-12-03 16:55:19 -0700 | [diff] [blame] | 271 | plat_size = info->plat_size; |
Simon Glass | 9fa2819 | 2016-07-04 11:58:18 -0600 | [diff] [blame] | 272 | #endif |
Simon Glass | caa4daa | 2020-12-03 16:55:18 -0700 | [diff] [blame] | 273 | ret = device_bind_common(parent, drv, info->name, (void *)info->plat, 0, |
Simon Glass | 4f50086 | 2020-12-03 16:55:19 -0700 | [diff] [blame] | 274 | ofnode_null(), plat_size, devp); |
Walter Lozano | fed0f89 | 2020-06-25 01:10:11 -0300 | [diff] [blame] | 275 | if (ret) |
| 276 | return ret; |
Walter Lozano | fed0f89 | 2020-06-25 01:10:11 -0300 | [diff] [blame] | 277 | |
| 278 | return ret; |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 279 | } |
| 280 | |
Claudiu Beznea | cfecbaf | 2020-09-07 17:46:33 +0300 | [diff] [blame] | 281 | int device_reparent(struct udevice *dev, struct udevice *new_parent) |
| 282 | { |
| 283 | struct udevice *pos, *n; |
| 284 | |
| 285 | assert(dev); |
| 286 | assert(new_parent); |
| 287 | |
Sean Anderson | 501a9a7 | 2022-03-30 12:26:40 -0400 | [diff] [blame] | 288 | device_foreach_child_safe(pos, n, dev->parent) { |
Claudiu Beznea | cfecbaf | 2020-09-07 17:46:33 +0300 | [diff] [blame] | 289 | if (pos->driver != dev->driver) |
| 290 | continue; |
| 291 | |
| 292 | list_del(&dev->sibling_node); |
| 293 | list_add_tail(&dev->sibling_node, &new_parent->child_head); |
| 294 | dev->parent = new_parent; |
| 295 | |
| 296 | break; |
| 297 | } |
| 298 | |
| 299 | return 0; |
| 300 | } |
| 301 | |
Simon Glass | 2c03c46 | 2015-03-25 12:21:53 -0600 | [diff] [blame] | 302 | static void *alloc_priv(int size, uint flags) |
| 303 | { |
| 304 | void *priv; |
| 305 | |
| 306 | if (flags & DM_FLAG_ALLOC_PRIV_DMA) { |
Faiz Abbas | 5924da1 | 2017-09-19 16:53:50 +0530 | [diff] [blame] | 307 | size = ROUND(size, ARCH_DMA_MINALIGN); |
Simon Glass | 2c03c46 | 2015-03-25 12:21:53 -0600 | [diff] [blame] | 308 | priv = memalign(ARCH_DMA_MINALIGN, size); |
Simon Glass | 5a8a804 | 2017-04-04 13:00:19 -0600 | [diff] [blame] | 309 | if (priv) { |
Simon Glass | 2c03c46 | 2015-03-25 12:21:53 -0600 | [diff] [blame] | 310 | memset(priv, '\0', size); |
Simon Glass | 5a8a804 | 2017-04-04 13:00:19 -0600 | [diff] [blame] | 311 | |
| 312 | /* |
| 313 | * Ensure that the zero bytes are flushed to memory. |
| 314 | * This prevents problems if the driver uses this as |
| 315 | * both an input and an output buffer: |
| 316 | * |
| 317 | * 1. Zeroes written to buffer (here) and sit in the |
| 318 | * cache |
| 319 | * 2. Driver issues a read command to DMA |
| 320 | * 3. CPU runs out of cache space and evicts some cache |
| 321 | * data in the buffer, writing zeroes to RAM from |
| 322 | * the memset() above |
| 323 | * 4. DMA completes |
| 324 | * 5. Buffer now has some DMA data and some zeroes |
| 325 | * 6. Data being read is now incorrect |
| 326 | * |
| 327 | * To prevent this, ensure that the cache is clean |
| 328 | * within this range at the start. The driver can then |
| 329 | * use normal flush-after-write, invalidate-before-read |
| 330 | * procedures. |
Simon Glass | 5a8a804 | 2017-04-04 13:00:19 -0600 | [diff] [blame] | 331 | */ |
Simon Glass | 5a8a804 | 2017-04-04 13:00:19 -0600 | [diff] [blame] | 332 | flush_dcache_range((ulong)priv, (ulong)priv + size); |
Simon Glass | 5a8a804 | 2017-04-04 13:00:19 -0600 | [diff] [blame] | 333 | } |
Simon Glass | 2c03c46 | 2015-03-25 12:21:53 -0600 | [diff] [blame] | 334 | } else { |
| 335 | priv = calloc(1, size); |
| 336 | } |
| 337 | |
| 338 | return priv; |
| 339 | } |
| 340 | |
Simon Glass | 82021e3 | 2020-12-19 10:40:08 -0700 | [diff] [blame] | 341 | /** |
| 342 | * device_alloc_priv() - Allocate priv/plat data required by the device |
| 343 | * |
| 344 | * @dev: Device to process |
Heinrich Schuchardt | 185f812 | 2022-01-19 18:05:50 +0100 | [diff] [blame] | 345 | * Return: 0 if OK, -ENOMEM if out of memory |
Simon Glass | 82021e3 | 2020-12-19 10:40:08 -0700 | [diff] [blame] | 346 | */ |
| 347 | static int device_alloc_priv(struct udevice *dev) |
| 348 | { |
| 349 | const struct driver *drv; |
| 350 | void *ptr; |
| 351 | int size; |
| 352 | |
| 353 | drv = dev->driver; |
| 354 | assert(drv); |
| 355 | |
| 356 | /* Allocate private data if requested and not reentered */ |
| 357 | if (drv->priv_auto && !dev_get_priv(dev)) { |
| 358 | ptr = alloc_priv(drv->priv_auto, drv->flags); |
| 359 | if (!ptr) |
| 360 | return -ENOMEM; |
| 361 | dev_set_priv(dev, ptr); |
| 362 | } |
| 363 | |
| 364 | /* Allocate private data if requested and not reentered */ |
| 365 | size = dev->uclass->uc_drv->per_device_auto; |
| 366 | if (size && !dev_get_uclass_priv(dev)) { |
| 367 | ptr = alloc_priv(size, dev->uclass->uc_drv->flags); |
| 368 | if (!ptr) |
| 369 | return -ENOMEM; |
| 370 | dev_set_uclass_priv(dev, ptr); |
| 371 | } |
| 372 | |
| 373 | /* Allocate parent data for this child */ |
| 374 | if (dev->parent) { |
| 375 | size = dev->parent->driver->per_child_auto; |
| 376 | if (!size) |
| 377 | size = dev->parent->uclass->uc_drv->per_child_auto; |
| 378 | if (size && !dev_get_parent_priv(dev)) { |
| 379 | ptr = alloc_priv(size, drv->flags); |
| 380 | if (!ptr) |
| 381 | return -ENOMEM; |
| 382 | dev_set_parent_priv(dev, ptr); |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | return 0; |
| 387 | } |
| 388 | |
Simon Glass | d1998a9 | 2020-12-03 16:55:21 -0700 | [diff] [blame] | 389 | int device_of_to_plat(struct udevice *dev) |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 390 | { |
Simon Glass | 3479253 | 2015-03-25 12:21:54 -0600 | [diff] [blame] | 391 | const struct driver *drv; |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 392 | int ret; |
| 393 | |
| 394 | if (!dev) |
| 395 | return -EINVAL; |
| 396 | |
Simon Glass | 73466df | 2020-12-19 10:40:10 -0700 | [diff] [blame] | 397 | if (dev_get_flags(dev) & DM_FLAG_PLATDATA_VALID) |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 398 | return 0; |
| 399 | |
Simon Glass | 1ef3af3 | 2021-03-15 17:25:15 +1300 | [diff] [blame] | 400 | /* |
| 401 | * This is not needed if binding is disabled, since data is allocated |
| 402 | * at build time. |
| 403 | */ |
| 404 | if (!CONFIG_IS_ENABLED(OF_PLATDATA_NO_BIND)) { |
| 405 | /* Ensure all parents have ofdata */ |
| 406 | if (dev->parent) { |
| 407 | ret = device_of_to_plat(dev->parent); |
| 408 | if (ret) |
| 409 | goto fail; |
| 410 | |
| 411 | /* |
| 412 | * The device might have already been probed during |
| 413 | * the call to device_probe() on its parent device |
| 414 | * (e.g. PCI bridge devices). Test the flags again |
| 415 | * so that we don't mess up the device. |
| 416 | */ |
| 417 | if (dev_get_flags(dev) & DM_FLAG_PLATDATA_VALID) |
| 418 | return 0; |
| 419 | } |
| 420 | |
| 421 | ret = device_alloc_priv(dev); |
Simon Glass | b0dcc87 | 2020-04-05 15:38:19 -0600 | [diff] [blame] | 422 | if (ret) |
| 423 | goto fail; |
Simon Glass | b0dcc87 | 2020-04-05 15:38:19 -0600 | [diff] [blame] | 424 | } |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 425 | drv = dev->driver; |
| 426 | assert(drv); |
| 427 | |
Simon Glass | d1998a9 | 2020-12-03 16:55:21 -0700 | [diff] [blame] | 428 | if (drv->of_to_plat && |
Simon Glass | c23405f | 2020-12-19 10:40:12 -0700 | [diff] [blame] | 429 | (CONFIG_IS_ENABLED(OF_PLATDATA) || dev_has_ofnode(dev))) { |
Simon Glass | d1998a9 | 2020-12-03 16:55:21 -0700 | [diff] [blame] | 430 | ret = drv->of_to_plat(dev); |
Simon Glass | 82de42f | 2019-12-29 21:19:18 -0700 | [diff] [blame] | 431 | if (ret) |
| 432 | goto fail; |
| 433 | } |
| 434 | |
Simon Glass | 73466df | 2020-12-19 10:40:10 -0700 | [diff] [blame] | 435 | dev_or_flags(dev, DM_FLAG_PLATDATA_VALID); |
Simon Glass | 153851d | 2019-12-29 21:19:21 -0700 | [diff] [blame] | 436 | |
Simon Glass | bcd90cb | 2019-12-29 21:19:20 -0700 | [diff] [blame] | 437 | return 0; |
| 438 | fail: |
| 439 | device_free(dev); |
| 440 | |
| 441 | return ret; |
| 442 | } |
| 443 | |
Nicolas Saenz Julienne | 4abf68d | 2021-01-12 13:55:24 +0100 | [diff] [blame] | 444 | /** |
| 445 | * device_get_dma_constraints() - Populate device's DMA constraints |
| 446 | * |
| 447 | * Gets a device's DMA constraints from firmware. This information is later |
| 448 | * used by drivers to translate physcal addresses to the device's bus address |
| 449 | * space. For now only device-tree is supported. |
| 450 | * |
| 451 | * @dev: Pointer to target device |
| 452 | * Return: 0 if OK or if no DMA constraints were found, error otherwise |
| 453 | */ |
| 454 | static int device_get_dma_constraints(struct udevice *dev) |
| 455 | { |
| 456 | struct udevice *parent = dev->parent; |
| 457 | phys_addr_t cpu = 0; |
| 458 | dma_addr_t bus = 0; |
| 459 | u64 size = 0; |
| 460 | int ret; |
| 461 | |
| 462 | if (!CONFIG_IS_ENABLED(DM_DMA) || !parent || !dev_has_ofnode(parent)) |
| 463 | return 0; |
| 464 | |
| 465 | /* |
| 466 | * We start parsing for dma-ranges from the device's bus node. This is |
| 467 | * specially important on nested buses. |
| 468 | */ |
| 469 | ret = dev_get_dma_range(parent, &cpu, &bus, &size); |
| 470 | /* Don't return an error if no 'dma-ranges' were found */ |
| 471 | if (ret && ret != -ENOENT) { |
| 472 | dm_warn("%s: failed to get DMA range, %d\n", dev->name, ret); |
| 473 | return ret; |
| 474 | } |
| 475 | |
| 476 | dev_set_dma_offset(dev, cpu - bus); |
| 477 | |
| 478 | return 0; |
| 479 | } |
| 480 | |
Simon Glass | bcd90cb | 2019-12-29 21:19:20 -0700 | [diff] [blame] | 481 | int device_probe(struct udevice *dev) |
| 482 | { |
| 483 | const struct driver *drv; |
| 484 | int ret; |
Simon Glass | bcd90cb | 2019-12-29 21:19:20 -0700 | [diff] [blame] | 485 | |
| 486 | if (!dev) |
| 487 | return -EINVAL; |
| 488 | |
Simon Glass | 73466df | 2020-12-19 10:40:10 -0700 | [diff] [blame] | 489 | if (dev_get_flags(dev) & DM_FLAG_ACTIVATED) |
Simon Glass | bcd90cb | 2019-12-29 21:19:20 -0700 | [diff] [blame] | 490 | return 0; |
| 491 | |
Simon Glass | 5b896ed | 2022-03-04 08:43:03 -0700 | [diff] [blame] | 492 | ret = device_notify(dev, EVT_DM_PRE_PROBE); |
| 493 | if (ret) |
| 494 | return ret; |
| 495 | |
Simon Glass | bcd90cb | 2019-12-29 21:19:20 -0700 | [diff] [blame] | 496 | drv = dev->driver; |
| 497 | assert(drv); |
| 498 | |
Simon Glass | d1998a9 | 2020-12-03 16:55:21 -0700 | [diff] [blame] | 499 | ret = device_of_to_plat(dev); |
Simon Glass | bcd90cb | 2019-12-29 21:19:20 -0700 | [diff] [blame] | 500 | if (ret) |
| 501 | goto fail; |
| 502 | |
Simon Glass | 82de42f | 2019-12-29 21:19:18 -0700 | [diff] [blame] | 503 | /* Ensure all parents are probed */ |
| 504 | if (dev->parent) { |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 505 | ret = device_probe(dev->parent); |
| 506 | if (ret) |
| 507 | goto fail; |
Bin Meng | cdeb2ba | 2015-08-24 01:14:02 -0700 | [diff] [blame] | 508 | |
| 509 | /* |
| 510 | * The device might have already been probed during |
| 511 | * the call to device_probe() on its parent device |
| 512 | * (e.g. PCI bridge devices). Test the flags again |
| 513 | * so that we don't mess up the device. |
| 514 | */ |
Simon Glass | 73466df | 2020-12-19 10:40:10 -0700 | [diff] [blame] | 515 | if (dev_get_flags(dev) & DM_FLAG_ACTIVATED) |
Bin Meng | cdeb2ba | 2015-08-24 01:14:02 -0700 | [diff] [blame] | 516 | return 0; |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 517 | } |
| 518 | |
Simon Glass | 73466df | 2020-12-19 10:40:10 -0700 | [diff] [blame] | 519 | dev_or_flags(dev, DM_FLAG_ACTIVATED); |
Simon Glass | 206d4d2 | 2015-03-25 12:21:56 -0600 | [diff] [blame] | 520 | |
Michal Simek | d8ef446 | 2022-01-07 16:38:09 +0100 | [diff] [blame] | 521 | if (CONFIG_IS_ENABLED(POWER_DOMAIN) && dev->parent && |
| 522 | (device_get_uclass_id(dev) != UCLASS_POWER_DOMAIN) && |
| 523 | !(drv->flags & DM_FLAG_DEFAULT_PD_CTRL_OFF)) { |
| 524 | ret = dev_power_domain_on(dev); |
| 525 | if (ret) |
| 526 | goto fail; |
| 527 | } |
| 528 | |
Simon Glass | 84d26e2 | 2015-09-12 08:45:19 -0600 | [diff] [blame] | 529 | /* |
| 530 | * Process pinctrl for everything except the root device, and |
Simon Glass | 0379597 | 2016-01-21 19:43:25 -0700 | [diff] [blame] | 531 | * continue regardless of the result of pinctrl. Don't process pinctrl |
| 532 | * settings for pinctrl devices since the device may not yet be |
| 533 | * probed. |
Simon Glass | 017d421 | 2021-01-21 13:57:13 -0700 | [diff] [blame] | 534 | * |
| 535 | * This call can produce some non-intuitive results. For example, on an |
| 536 | * x86 device where dev is the main PCI bus, the pinctrl device may be |
| 537 | * child or grandchild of that bus, meaning that the child will be |
| 538 | * probed here. If the child happens to be the P2SB and the pinctrl |
| 539 | * device is a child of that, then both the pinctrl and P2SB will be |
| 540 | * probed by this call. This works because the DM_FLAG_ACTIVATED flag |
| 541 | * is set just above. However, the PCI bus' probe() method and |
| 542 | * associated uclass methods have not yet been called. |
Simon Glass | 84d26e2 | 2015-09-12 08:45:19 -0600 | [diff] [blame] | 543 | */ |
Patrick Delaunay | af13df7 | 2021-11-19 10:02:27 +0100 | [diff] [blame] | 544 | if (dev->parent && device_get_uclass_id(dev) != UCLASS_PINCTRL) { |
| 545 | ret = pinctrl_select_state(dev, "default"); |
| 546 | if (ret && ret != -ENOSYS) |
| 547 | log_debug("Device '%s' failed to configure default pinctrl: %d (%s)\n", |
| 548 | dev->name, ret, errno_str(ret)); |
| 549 | } |
Masahiro Yamada | d90a5a3 | 2015-08-27 12:44:29 +0900 | [diff] [blame] | 550 | |
Mark Kettenis | 40dbf03 | 2021-10-23 16:58:01 +0200 | [diff] [blame] | 551 | if (CONFIG_IS_ENABLED(IOMMU) && dev->parent && |
| 552 | (device_get_uclass_id(dev) != UCLASS_IOMMU)) { |
| 553 | ret = dev_iommu_enable(dev); |
| 554 | if (ret) |
| 555 | goto fail; |
| 556 | } |
| 557 | |
Nicolas Saenz Julienne | 4abf68d | 2021-01-12 13:55:24 +0100 | [diff] [blame] | 558 | ret = device_get_dma_constraints(dev); |
| 559 | if (ret) |
| 560 | goto fail; |
| 561 | |
Simon Glass | 02c07b3 | 2015-03-05 12:25:22 -0700 | [diff] [blame] | 562 | ret = uclass_pre_probe_device(dev); |
Simon Glass | 83c7e43 | 2015-01-25 08:27:10 -0700 | [diff] [blame] | 563 | if (ret) |
| 564 | goto fail; |
| 565 | |
Simon Glass | a327dee | 2014-07-23 06:55:21 -0600 | [diff] [blame] | 566 | if (dev->parent && dev->parent->driver->child_pre_probe) { |
| 567 | ret = dev->parent->driver->child_pre_probe(dev); |
| 568 | if (ret) |
| 569 | goto fail; |
| 570 | } |
| 571 | |
Bin Meng | a1f99e4 | 2019-07-05 09:23:16 -0700 | [diff] [blame] | 572 | /* Only handle devices that have a valid ofnode */ |
Simon Glass | 7d14ee4 | 2020-12-19 10:40:13 -0700 | [diff] [blame] | 573 | if (dev_has_ofnode(dev)) { |
Bin Meng | a1f99e4 | 2019-07-05 09:23:16 -0700 | [diff] [blame] | 574 | /* |
| 575 | * Process 'assigned-{clocks/clock-parents/clock-rates}' |
| 576 | * properties |
| 577 | */ |
Sean Anderson | 6e33eba | 2021-06-11 00:16:07 -0400 | [diff] [blame] | 578 | ret = clk_set_defaults(dev, CLK_DEFAULTS_PRE); |
Bin Meng | a1f99e4 | 2019-07-05 09:23:16 -0700 | [diff] [blame] | 579 | if (ret) |
| 580 | goto fail; |
| 581 | } |
Philipp Tomsich | f4fcba5 | 2018-01-08 13:59:18 +0100 | [diff] [blame] | 582 | |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 583 | if (drv->probe) { |
| 584 | ret = drv->probe(dev); |
Simon Glass | a41e6da | 2019-12-29 21:19:16 -0700 | [diff] [blame] | 585 | if (ret) |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 586 | goto fail; |
| 587 | } |
| 588 | |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 589 | ret = uclass_post_probe_device(dev); |
Simon Glass | 206d4d2 | 2015-03-25 12:21:56 -0600 | [diff] [blame] | 590 | if (ret) |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 591 | goto fail_uclass; |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 592 | |
Patrick Delaunay | af13df7 | 2021-11-19 10:02:27 +0100 | [diff] [blame] | 593 | if (dev->parent && device_get_uclass_id(dev) == UCLASS_PINCTRL) { |
| 594 | ret = pinctrl_select_state(dev, "default"); |
| 595 | if (ret && ret != -ENOSYS) |
| 596 | log_debug("Device '%s' failed to configure default pinctrl: %d (%s)\n", |
| 597 | dev->name, ret, errno_str(ret)); |
| 598 | } |
Peng Fan | c3ab985 | 2016-03-12 13:17:38 +0800 | [diff] [blame] | 599 | |
Simon Glass | 5b896ed | 2022-03-04 08:43:03 -0700 | [diff] [blame] | 600 | ret = device_notify(dev, EVT_DM_POST_PROBE); |
| 601 | if (ret) |
Simon Glass | c837a14 | 2023-08-24 13:55:35 -0600 | [diff] [blame] | 602 | goto fail_event; |
Simon Glass | 5b896ed | 2022-03-04 08:43:03 -0700 | [diff] [blame] | 603 | |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 604 | return 0; |
Simon Glass | c837a14 | 2023-08-24 13:55:35 -0600 | [diff] [blame] | 605 | fail_event: |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 606 | fail_uclass: |
Stefan Roese | 706865a | 2017-03-20 12:51:48 +0100 | [diff] [blame] | 607 | if (device_remove(dev, DM_REMOVE_NORMAL)) { |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 608 | dm_warn("%s: Device '%s' failed to remove on error path\n", |
| 609 | __func__, dev->name); |
| 610 | } |
| 611 | fail: |
Simon Glass | 73466df | 2020-12-19 10:40:10 -0700 | [diff] [blame] | 612 | dev_bic_flags(dev, DM_FLAG_ACTIVATED); |
Simon Glass | 206d4d2 | 2015-03-25 12:21:56 -0600 | [diff] [blame] | 613 | |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 614 | device_free(dev); |
| 615 | |
| 616 | return ret; |
| 617 | } |
| 618 | |
Simon Glass | c69cda2 | 2020-12-03 16:55:20 -0700 | [diff] [blame] | 619 | void *dev_get_plat(const struct udevice *dev) |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 620 | { |
| 621 | if (!dev) { |
Simon Glass | 964d153 | 2014-12-10 08:55:56 -0700 | [diff] [blame] | 622 | dm_warn("%s: null device\n", __func__); |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 623 | return NULL; |
| 624 | } |
| 625 | |
Simon Glass | cfb9c9b | 2021-03-15 17:25:40 +1300 | [diff] [blame] | 626 | return dm_priv_to_rw(dev->plat_); |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 627 | } |
| 628 | |
Simon Glass | caa4daa | 2020-12-03 16:55:18 -0700 | [diff] [blame] | 629 | void *dev_get_parent_plat(const struct udevice *dev) |
Simon Glass | cdc133b | 2015-01-25 08:27:01 -0700 | [diff] [blame] | 630 | { |
| 631 | if (!dev) { |
Simon Glass | 36d7cc1 | 2015-07-06 16:47:40 -0600 | [diff] [blame] | 632 | dm_warn("%s: null device\n", __func__); |
Simon Glass | cdc133b | 2015-01-25 08:27:01 -0700 | [diff] [blame] | 633 | return NULL; |
| 634 | } |
| 635 | |
Simon Glass | cfb9c9b | 2021-03-15 17:25:40 +1300 | [diff] [blame] | 636 | return dm_priv_to_rw(dev->parent_plat_); |
Simon Glass | cdc133b | 2015-01-25 08:27:01 -0700 | [diff] [blame] | 637 | } |
| 638 | |
Simon Glass | caa4daa | 2020-12-03 16:55:18 -0700 | [diff] [blame] | 639 | void *dev_get_uclass_plat(const struct udevice *dev) |
Przemyslaw Marczak | 5eaed88 | 2015-04-15 13:07:18 +0200 | [diff] [blame] | 640 | { |
| 641 | if (!dev) { |
Simon Glass | 36d7cc1 | 2015-07-06 16:47:40 -0600 | [diff] [blame] | 642 | dm_warn("%s: null device\n", __func__); |
Przemyslaw Marczak | 5eaed88 | 2015-04-15 13:07:18 +0200 | [diff] [blame] | 643 | return NULL; |
| 644 | } |
| 645 | |
Simon Glass | cfb9c9b | 2021-03-15 17:25:40 +1300 | [diff] [blame] | 646 | return dm_priv_to_rw(dev->uclass_plat_); |
Przemyslaw Marczak | 5eaed88 | 2015-04-15 13:07:18 +0200 | [diff] [blame] | 647 | } |
| 648 | |
Simon Glass | 9f15cc1 | 2018-10-01 12:22:06 -0600 | [diff] [blame] | 649 | void *dev_get_priv(const struct udevice *dev) |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 650 | { |
| 651 | if (!dev) { |
Simon Glass | 964d153 | 2014-12-10 08:55:56 -0700 | [diff] [blame] | 652 | dm_warn("%s: null device\n", __func__); |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 653 | return NULL; |
| 654 | } |
| 655 | |
Simon Glass | cfb9c9b | 2021-03-15 17:25:40 +1300 | [diff] [blame] | 656 | return dm_priv_to_rw(dev->priv_); |
Simon Glass | 6494d70 | 2014-02-26 15:59:18 -0700 | [diff] [blame] | 657 | } |
Simon Glass | 997c87b | 2014-07-23 06:55:19 -0600 | [diff] [blame] | 658 | |
Simon Glass | 4aa5053 | 2023-01-15 14:15:42 -0700 | [diff] [blame] | 659 | /* notrace is needed as this is called by timer_get_rate() */ |
| 660 | notrace void *dev_get_uclass_priv(const struct udevice *dev) |
Simon Glass | e564f05 | 2015-03-05 12:25:20 -0700 | [diff] [blame] | 661 | { |
| 662 | if (!dev) { |
| 663 | dm_warn("%s: null device\n", __func__); |
| 664 | return NULL; |
| 665 | } |
| 666 | |
Simon Glass | cfb9c9b | 2021-03-15 17:25:40 +1300 | [diff] [blame] | 667 | return dm_priv_to_rw(dev->uclass_priv_); |
Simon Glass | e564f05 | 2015-03-05 12:25:20 -0700 | [diff] [blame] | 668 | } |
| 669 | |
Simon Glass | 9f15cc1 | 2018-10-01 12:22:06 -0600 | [diff] [blame] | 670 | void *dev_get_parent_priv(const struct udevice *dev) |
Simon Glass | e59f458 | 2014-07-23 06:55:20 -0600 | [diff] [blame] | 671 | { |
| 672 | if (!dev) { |
Simon Glass | 964d153 | 2014-12-10 08:55:56 -0700 | [diff] [blame] | 673 | dm_warn("%s: null device\n", __func__); |
Simon Glass | e59f458 | 2014-07-23 06:55:20 -0600 | [diff] [blame] | 674 | return NULL; |
| 675 | } |
| 676 | |
Simon Glass | cfb9c9b | 2021-03-15 17:25:40 +1300 | [diff] [blame] | 677 | return dm_priv_to_rw(dev->parent_priv_); |
Simon Glass | e59f458 | 2014-07-23 06:55:20 -0600 | [diff] [blame] | 678 | } |
| 679 | |
Simon Glass | 930a3dd | 2022-05-08 04:39:24 -0600 | [diff] [blame] | 680 | void *dev_get_attach_ptr(const struct udevice *dev, enum dm_tag_t tag) |
| 681 | { |
| 682 | switch (tag) { |
| 683 | case DM_TAG_PLAT: |
| 684 | return dev_get_plat(dev); |
| 685 | case DM_TAG_PARENT_PLAT: |
| 686 | return dev_get_parent_plat(dev); |
| 687 | case DM_TAG_UC_PLAT: |
| 688 | return dev_get_uclass_plat(dev); |
| 689 | case DM_TAG_PRIV: |
| 690 | return dev_get_priv(dev); |
| 691 | case DM_TAG_PARENT_PRIV: |
| 692 | return dev_get_parent_priv(dev); |
| 693 | case DM_TAG_UC_PRIV: |
| 694 | return dev_get_uclass_priv(dev); |
| 695 | default: |
| 696 | return NULL; |
| 697 | } |
| 698 | } |
| 699 | |
| 700 | int dev_get_attach_size(const struct udevice *dev, enum dm_tag_t tag) |
| 701 | { |
| 702 | const struct udevice *parent = dev_get_parent(dev); |
| 703 | const struct uclass *uc = dev->uclass; |
| 704 | const struct uclass_driver *uc_drv = uc->uc_drv; |
| 705 | const struct driver *parent_drv = NULL; |
| 706 | int size = 0; |
| 707 | |
| 708 | if (parent) |
| 709 | parent_drv = parent->driver; |
| 710 | |
| 711 | switch (tag) { |
| 712 | case DM_TAG_PLAT: |
| 713 | size = dev->driver->plat_auto; |
| 714 | break; |
| 715 | case DM_TAG_PARENT_PLAT: |
| 716 | if (parent) { |
| 717 | size = parent_drv->per_child_plat_auto; |
| 718 | if (!size) |
| 719 | size = parent->uclass->uc_drv->per_child_plat_auto; |
| 720 | } |
| 721 | break; |
| 722 | case DM_TAG_UC_PLAT: |
| 723 | size = uc_drv->per_device_plat_auto; |
| 724 | break; |
| 725 | case DM_TAG_PRIV: |
| 726 | size = dev->driver->priv_auto; |
| 727 | break; |
| 728 | case DM_TAG_PARENT_PRIV: |
| 729 | if (parent) { |
| 730 | size = parent_drv->per_child_auto; |
| 731 | if (!size) |
| 732 | size = parent->uclass->uc_drv->per_child_auto; |
| 733 | } |
| 734 | break; |
| 735 | case DM_TAG_UC_PRIV: |
| 736 | size = uc_drv->per_device_auto; |
| 737 | break; |
| 738 | default: |
| 739 | break; |
| 740 | } |
| 741 | |
| 742 | return size; |
| 743 | } |
| 744 | |
Simon Glass | 997c87b | 2014-07-23 06:55:19 -0600 | [diff] [blame] | 745 | static int device_get_device_tail(struct udevice *dev, int ret, |
| 746 | struct udevice **devp) |
| 747 | { |
| 748 | if (ret) |
| 749 | return ret; |
| 750 | |
| 751 | ret = device_probe(dev); |
| 752 | if (ret) |
| 753 | return ret; |
| 754 | |
| 755 | *devp = dev; |
| 756 | |
| 757 | return 0; |
| 758 | } |
| 759 | |
Simon Glass | 414cc15 | 2021-08-07 07:24:03 -0600 | [diff] [blame] | 760 | #if CONFIG_IS_ENABLED(OF_REAL) |
Mario Six | e4c98a5 | 2018-06-26 08:46:50 +0200 | [diff] [blame] | 761 | /** |
| 762 | * device_find_by_ofnode() - Return device associated with given ofnode |
| 763 | * |
| 764 | * The returned device is *not* activated. |
| 765 | * |
| 766 | * @node: The ofnode for which a associated device should be looked up |
| 767 | * @devp: Pointer to structure to hold the found device |
| 768 | * Return: 0 if OK, -ve on error |
| 769 | */ |
| 770 | static int device_find_by_ofnode(ofnode node, struct udevice **devp) |
| 771 | { |
| 772 | struct uclass *uc; |
| 773 | struct udevice *dev; |
| 774 | int ret; |
| 775 | |
Simon Glass | 8a71553 | 2020-12-19 10:40:17 -0700 | [diff] [blame] | 776 | list_for_each_entry(uc, gd->uclass_root, sibling_node) { |
Mario Six | e4c98a5 | 2018-06-26 08:46:50 +0200 | [diff] [blame] | 777 | ret = uclass_find_device_by_ofnode(uc->uc_drv->id, node, |
| 778 | &dev); |
| 779 | if (!ret || dev) { |
| 780 | *devp = dev; |
| 781 | return 0; |
| 782 | } |
| 783 | } |
| 784 | |
| 785 | return -ENODEV; |
| 786 | } |
Marek Vasut | d7677bf | 2019-08-31 18:03:28 +0200 | [diff] [blame] | 787 | #endif |
Mario Six | e4c98a5 | 2018-06-26 08:46:50 +0200 | [diff] [blame] | 788 | |
Simon Glass | fc347fb | 2020-01-27 08:49:36 -0700 | [diff] [blame] | 789 | int device_get_child(const struct udevice *parent, int index, |
| 790 | struct udevice **devp) |
Simon Glass | 997c87b | 2014-07-23 06:55:19 -0600 | [diff] [blame] | 791 | { |
| 792 | struct udevice *dev; |
| 793 | |
Sean Anderson | 501a9a7 | 2022-03-30 12:26:40 -0400 | [diff] [blame] | 794 | device_foreach_child(dev, parent) { |
Simon Glass | 997c87b | 2014-07-23 06:55:19 -0600 | [diff] [blame] | 795 | if (!index--) |
| 796 | return device_get_device_tail(dev, 0, devp); |
| 797 | } |
| 798 | |
| 799 | return -ENODEV; |
| 800 | } |
| 801 | |
Simon Glass | fc347fb | 2020-01-27 08:49:36 -0700 | [diff] [blame] | 802 | int device_get_child_count(const struct udevice *parent) |
Lokesh Vutla | 240b932 | 2019-09-04 16:01:26 +0530 | [diff] [blame] | 803 | { |
| 804 | struct udevice *dev; |
| 805 | int count = 0; |
| 806 | |
Sean Anderson | 501a9a7 | 2022-03-30 12:26:40 -0400 | [diff] [blame] | 807 | device_foreach_child(dev, parent) |
Lokesh Vutla | 240b932 | 2019-09-04 16:01:26 +0530 | [diff] [blame] | 808 | count++; |
| 809 | |
| 810 | return count; |
| 811 | } |
| 812 | |
Simon Glass | 6476c4d | 2021-12-16 20:59:32 -0700 | [diff] [blame] | 813 | int device_get_decendent_count(const struct udevice *parent) |
| 814 | { |
| 815 | const struct udevice *dev; |
| 816 | int count = 1; |
| 817 | |
Sean Anderson | 501a9a7 | 2022-03-30 12:26:40 -0400 | [diff] [blame] | 818 | device_foreach_child(dev, parent) |
Simon Glass | 6476c4d | 2021-12-16 20:59:32 -0700 | [diff] [blame] | 819 | count += device_get_decendent_count(dev); |
| 820 | |
| 821 | return count; |
| 822 | } |
| 823 | |
Simon Glass | 9917591 | 2020-12-16 21:20:29 -0700 | [diff] [blame] | 824 | int device_find_child_by_seq(const struct udevice *parent, int seq, |
| 825 | struct udevice **devp) |
Simon Glass | 997c87b | 2014-07-23 06:55:19 -0600 | [diff] [blame] | 826 | { |
| 827 | struct udevice *dev; |
| 828 | |
| 829 | *devp = NULL; |
Simon Glass | 997c87b | 2014-07-23 06:55:19 -0600 | [diff] [blame] | 830 | |
Sean Anderson | 501a9a7 | 2022-03-30 12:26:40 -0400 | [diff] [blame] | 831 | device_foreach_child(dev, parent) { |
Simon Glass | 2462139 | 2020-12-19 10:40:09 -0700 | [diff] [blame] | 832 | if (dev->seq_ == seq) { |
Simon Glass | 997c87b | 2014-07-23 06:55:19 -0600 | [diff] [blame] | 833 | *devp = dev; |
| 834 | return 0; |
| 835 | } |
| 836 | } |
| 837 | |
| 838 | return -ENODEV; |
| 839 | } |
| 840 | |
Simon Glass | fc347fb | 2020-01-27 08:49:36 -0700 | [diff] [blame] | 841 | int device_get_child_by_seq(const struct udevice *parent, int seq, |
Simon Glass | 997c87b | 2014-07-23 06:55:19 -0600 | [diff] [blame] | 842 | struct udevice **devp) |
| 843 | { |
| 844 | struct udevice *dev; |
| 845 | int ret; |
| 846 | |
| 847 | *devp = NULL; |
Simon Glass | 9917591 | 2020-12-16 21:20:29 -0700 | [diff] [blame] | 848 | ret = device_find_child_by_seq(parent, seq, &dev); |
| 849 | |
Simon Glass | 997c87b | 2014-07-23 06:55:19 -0600 | [diff] [blame] | 850 | return device_get_device_tail(dev, ret, devp); |
| 851 | } |
| 852 | |
Simon Glass | fc347fb | 2020-01-27 08:49:36 -0700 | [diff] [blame] | 853 | int device_find_child_by_of_offset(const struct udevice *parent, int of_offset, |
Simon Glass | 997c87b | 2014-07-23 06:55:19 -0600 | [diff] [blame] | 854 | struct udevice **devp) |
| 855 | { |
| 856 | struct udevice *dev; |
| 857 | |
| 858 | *devp = NULL; |
| 859 | |
Sean Anderson | 501a9a7 | 2022-03-30 12:26:40 -0400 | [diff] [blame] | 860 | device_foreach_child(dev, parent) { |
Simon Glass | e160f7d | 2017-01-17 16:52:55 -0700 | [diff] [blame] | 861 | if (dev_of_offset(dev) == of_offset) { |
Simon Glass | 997c87b | 2014-07-23 06:55:19 -0600 | [diff] [blame] | 862 | *devp = dev; |
| 863 | return 0; |
| 864 | } |
| 865 | } |
| 866 | |
| 867 | return -ENODEV; |
| 868 | } |
| 869 | |
Simon Glass | fc347fb | 2020-01-27 08:49:36 -0700 | [diff] [blame] | 870 | int device_get_child_by_of_offset(const struct udevice *parent, int node, |
Simon Glass | 997c87b | 2014-07-23 06:55:19 -0600 | [diff] [blame] | 871 | struct udevice **devp) |
| 872 | { |
| 873 | struct udevice *dev; |
| 874 | int ret; |
| 875 | |
| 876 | *devp = NULL; |
Simon Glass | 132f9bf | 2015-06-23 15:38:38 -0600 | [diff] [blame] | 877 | ret = device_find_child_by_of_offset(parent, node, &dev); |
Simon Glass | 997c87b | 2014-07-23 06:55:19 -0600 | [diff] [blame] | 878 | return device_get_device_tail(dev, ret, devp); |
| 879 | } |
Simon Glass | a8981d4 | 2014-10-13 23:41:49 -0600 | [diff] [blame] | 880 | |
Jean-Jacques Hiblot | 7ec9181 | 2018-08-09 16:17:44 +0200 | [diff] [blame] | 881 | static struct udevice *_device_find_global_by_ofnode(struct udevice *parent, |
| 882 | ofnode ofnode) |
Simon Glass | 2693047 | 2015-06-23 15:38:37 -0600 | [diff] [blame] | 883 | { |
| 884 | struct udevice *dev, *found; |
| 885 | |
Jean-Jacques Hiblot | 7ec9181 | 2018-08-09 16:17:44 +0200 | [diff] [blame] | 886 | if (ofnode_equal(dev_ofnode(parent), ofnode)) |
Simon Glass | 2693047 | 2015-06-23 15:38:37 -0600 | [diff] [blame] | 887 | return parent; |
| 888 | |
Sean Anderson | 501a9a7 | 2022-03-30 12:26:40 -0400 | [diff] [blame] | 889 | device_foreach_child(dev, parent) { |
Jean-Jacques Hiblot | 7ec9181 | 2018-08-09 16:17:44 +0200 | [diff] [blame] | 890 | found = _device_find_global_by_ofnode(dev, ofnode); |
Simon Glass | 2693047 | 2015-06-23 15:38:37 -0600 | [diff] [blame] | 891 | if (found) |
| 892 | return found; |
| 893 | } |
| 894 | |
| 895 | return NULL; |
| 896 | } |
| 897 | |
Jean-Jacques Hiblot | 7ec9181 | 2018-08-09 16:17:44 +0200 | [diff] [blame] | 898 | int device_find_global_by_ofnode(ofnode ofnode, struct udevice **devp) |
| 899 | { |
| 900 | *devp = _device_find_global_by_ofnode(gd->dm_root, ofnode); |
| 901 | |
| 902 | return *devp ? 0 : -ENOENT; |
| 903 | } |
| 904 | |
| 905 | int device_get_global_by_ofnode(ofnode ofnode, struct udevice **devp) |
Simon Glass | 2693047 | 2015-06-23 15:38:37 -0600 | [diff] [blame] | 906 | { |
| 907 | struct udevice *dev; |
| 908 | |
Jean-Jacques Hiblot | 7ec9181 | 2018-08-09 16:17:44 +0200 | [diff] [blame] | 909 | dev = _device_find_global_by_ofnode(gd->dm_root, ofnode); |
Simon Glass | 2693047 | 2015-06-23 15:38:37 -0600 | [diff] [blame] | 910 | return device_get_device_tail(dev, dev ? 0 : -ENOENT, devp); |
| 911 | } |
| 912 | |
Walter Lozano | fed0f89 | 2020-06-25 01:10:11 -0300 | [diff] [blame] | 913 | #if CONFIG_IS_ENABLED(OF_PLATDATA) |
Simon Glass | cc469b7 | 2021-03-15 17:25:28 +1300 | [diff] [blame] | 914 | int device_get_by_ofplat_idx(uint idx, struct udevice **devp) |
Simon Glass | 8a38abf | 2020-10-03 11:31:40 -0600 | [diff] [blame] | 915 | { |
Simon Glass | 8a38abf | 2020-10-03 11:31:40 -0600 | [diff] [blame] | 916 | struct udevice *dev; |
| 917 | |
Simon Glass | cc469b7 | 2021-03-15 17:25:28 +1300 | [diff] [blame] | 918 | if (CONFIG_IS_ENABLED(OF_PLATDATA_INST)) { |
| 919 | struct udevice *base = ll_entry_start(struct udevice, udevice); |
| 920 | |
| 921 | dev = base + idx; |
| 922 | } else { |
| 923 | struct driver_rt *drt = gd_dm_driver_rt() + idx; |
| 924 | |
| 925 | dev = drt->dev; |
| 926 | } |
Simon Glass | 8a38abf | 2020-10-03 11:31:40 -0600 | [diff] [blame] | 927 | *devp = NULL; |
| 928 | |
| 929 | return device_get_device_tail(dev, dev ? 0 : -ENOENT, devp); |
| 930 | } |
Walter Lozano | fed0f89 | 2020-06-25 01:10:11 -0300 | [diff] [blame] | 931 | #endif |
| 932 | |
Simon Glass | fc347fb | 2020-01-27 08:49:36 -0700 | [diff] [blame] | 933 | int device_find_first_child(const struct udevice *parent, struct udevice **devp) |
Simon Glass | a8981d4 | 2014-10-13 23:41:49 -0600 | [diff] [blame] | 934 | { |
| 935 | if (list_empty(&parent->child_head)) { |
| 936 | *devp = NULL; |
| 937 | } else { |
| 938 | *devp = list_first_entry(&parent->child_head, struct udevice, |
| 939 | sibling_node); |
| 940 | } |
| 941 | |
| 942 | return 0; |
| 943 | } |
| 944 | |
| 945 | int device_find_next_child(struct udevice **devp) |
| 946 | { |
| 947 | struct udevice *dev = *devp; |
| 948 | struct udevice *parent = dev->parent; |
| 949 | |
| 950 | if (list_is_last(&dev->sibling_node, &parent->child_head)) { |
| 951 | *devp = NULL; |
| 952 | } else { |
| 953 | *devp = list_entry(dev->sibling_node.next, struct udevice, |
| 954 | sibling_node); |
| 955 | } |
| 956 | |
| 957 | return 0; |
| 958 | } |
Simon Glass | 2ef249b | 2014-11-11 10:46:18 -0700 | [diff] [blame] | 959 | |
Simon Glass | fc347fb | 2020-01-27 08:49:36 -0700 | [diff] [blame] | 960 | int device_find_first_inactive_child(const struct udevice *parent, |
Simon Glass | cdb6aa0 | 2018-10-01 12:22:07 -0600 | [diff] [blame] | 961 | enum uclass_id uclass_id, |
| 962 | struct udevice **devp) |
| 963 | { |
| 964 | struct udevice *dev; |
| 965 | |
| 966 | *devp = NULL; |
Sean Anderson | 501a9a7 | 2022-03-30 12:26:40 -0400 | [diff] [blame] | 967 | device_foreach_child(dev, parent) { |
Simon Glass | cdb6aa0 | 2018-10-01 12:22:07 -0600 | [diff] [blame] | 968 | if (!device_active(dev) && |
| 969 | device_get_uclass_id(dev) == uclass_id) { |
| 970 | *devp = dev; |
| 971 | return 0; |
| 972 | } |
| 973 | } |
| 974 | |
| 975 | return -ENODEV; |
| 976 | } |
| 977 | |
Simon Glass | fc347fb | 2020-01-27 08:49:36 -0700 | [diff] [blame] | 978 | int device_find_first_child_by_uclass(const struct udevice *parent, |
Simon Glass | 3abe111 | 2018-11-18 08:14:31 -0700 | [diff] [blame] | 979 | enum uclass_id uclass_id, |
| 980 | struct udevice **devp) |
| 981 | { |
| 982 | struct udevice *dev; |
| 983 | |
| 984 | *devp = NULL; |
Sean Anderson | 501a9a7 | 2022-03-30 12:26:40 -0400 | [diff] [blame] | 985 | device_foreach_child(dev, parent) { |
Simon Glass | 3abe111 | 2018-11-18 08:14:31 -0700 | [diff] [blame] | 986 | if (device_get_uclass_id(dev) == uclass_id) { |
| 987 | *devp = dev; |
| 988 | return 0; |
| 989 | } |
| 990 | } |
| 991 | |
| 992 | return -ENODEV; |
| 993 | } |
| 994 | |
Simon Glass | 4b03017 | 2021-10-23 17:26:08 -0600 | [diff] [blame] | 995 | int device_find_child_by_namelen(const struct udevice *parent, const char *name, |
| 996 | int len, struct udevice **devp) |
Simon Glass | 3abe111 | 2018-11-18 08:14:31 -0700 | [diff] [blame] | 997 | { |
| 998 | struct udevice *dev; |
| 999 | |
| 1000 | *devp = NULL; |
| 1001 | |
Sean Anderson | 501a9a7 | 2022-03-30 12:26:40 -0400 | [diff] [blame] | 1002 | device_foreach_child(dev, parent) { |
Simon Glass | 4b03017 | 2021-10-23 17:26:08 -0600 | [diff] [blame] | 1003 | if (!strncmp(dev->name, name, len) && |
| 1004 | strlen(dev->name) == len) { |
Simon Glass | 3abe111 | 2018-11-18 08:14:31 -0700 | [diff] [blame] | 1005 | *devp = dev; |
| 1006 | return 0; |
| 1007 | } |
| 1008 | } |
| 1009 | |
| 1010 | return -ENODEV; |
| 1011 | } |
| 1012 | |
Simon Glass | 4b03017 | 2021-10-23 17:26:08 -0600 | [diff] [blame] | 1013 | int device_find_child_by_name(const struct udevice *parent, const char *name, |
| 1014 | struct udevice **devp) |
| 1015 | { |
| 1016 | return device_find_child_by_namelen(parent, name, strlen(name), devp); |
| 1017 | } |
| 1018 | |
Simon Glass | 903e83e | 2020-01-27 08:49:48 -0700 | [diff] [blame] | 1019 | int device_first_child_err(struct udevice *parent, struct udevice **devp) |
| 1020 | { |
| 1021 | struct udevice *dev; |
| 1022 | |
| 1023 | device_find_first_child(parent, &dev); |
| 1024 | if (!dev) |
| 1025 | return -ENODEV; |
| 1026 | |
| 1027 | return device_get_device_tail(dev, 0, devp); |
| 1028 | } |
| 1029 | |
| 1030 | int device_next_child_err(struct udevice **devp) |
| 1031 | { |
| 1032 | struct udevice *dev = *devp; |
| 1033 | |
| 1034 | device_find_next_child(&dev); |
| 1035 | if (!dev) |
| 1036 | return -ENODEV; |
| 1037 | |
| 1038 | return device_get_device_tail(dev, 0, devp); |
| 1039 | } |
| 1040 | |
Simon Glass | f262d4c | 2020-01-27 08:49:47 -0700 | [diff] [blame] | 1041 | int device_first_child_ofdata_err(struct udevice *parent, struct udevice **devp) |
| 1042 | { |
| 1043 | struct udevice *dev; |
| 1044 | int ret; |
| 1045 | |
| 1046 | device_find_first_child(parent, &dev); |
| 1047 | if (!dev) |
| 1048 | return -ENODEV; |
| 1049 | |
Simon Glass | d1998a9 | 2020-12-03 16:55:21 -0700 | [diff] [blame] | 1050 | ret = device_of_to_plat(dev); |
Simon Glass | f262d4c | 2020-01-27 08:49:47 -0700 | [diff] [blame] | 1051 | if (ret) |
| 1052 | return ret; |
| 1053 | |
| 1054 | *devp = dev; |
| 1055 | |
| 1056 | return 0; |
| 1057 | } |
| 1058 | |
| 1059 | int device_next_child_ofdata_err(struct udevice **devp) |
| 1060 | { |
| 1061 | struct udevice *dev = *devp; |
| 1062 | int ret; |
| 1063 | |
| 1064 | device_find_next_child(&dev); |
| 1065 | if (!dev) |
| 1066 | return -ENODEV; |
| 1067 | |
Simon Glass | d1998a9 | 2020-12-03 16:55:21 -0700 | [diff] [blame] | 1068 | ret = device_of_to_plat(dev); |
Simon Glass | f262d4c | 2020-01-27 08:49:47 -0700 | [diff] [blame] | 1069 | if (ret) |
| 1070 | return ret; |
| 1071 | |
| 1072 | *devp = dev; |
| 1073 | |
| 1074 | return 0; |
| 1075 | } |
| 1076 | |
Simon Glass | 9f15cc1 | 2018-10-01 12:22:06 -0600 | [diff] [blame] | 1077 | struct udevice *dev_get_parent(const struct udevice *child) |
Simon Glass | 479728c | 2014-11-11 10:46:19 -0700 | [diff] [blame] | 1078 | { |
| 1079 | return child->parent; |
| 1080 | } |
| 1081 | |
Simon Glass | 9f15cc1 | 2018-10-01 12:22:06 -0600 | [diff] [blame] | 1082 | ulong dev_get_driver_data(const struct udevice *dev) |
Simon Glass | 2ef249b | 2014-11-11 10:46:18 -0700 | [diff] [blame] | 1083 | { |
Simon Glass | 39de843 | 2015-03-25 12:21:55 -0600 | [diff] [blame] | 1084 | return dev->driver_data; |
Simon Glass | 2ef249b | 2014-11-11 10:46:18 -0700 | [diff] [blame] | 1085 | } |
Simon Glass | b367053 | 2015-01-25 08:27:04 -0700 | [diff] [blame] | 1086 | |
Simon Glass | 9f15cc1 | 2018-10-01 12:22:06 -0600 | [diff] [blame] | 1087 | const void *dev_get_driver_ops(const struct udevice *dev) |
Przemyslaw Marczak | cc73d37 | 2015-04-15 13:07:24 +0200 | [diff] [blame] | 1088 | { |
| 1089 | if (!dev || !dev->driver->ops) |
| 1090 | return NULL; |
| 1091 | |
| 1092 | return dev->driver->ops; |
| 1093 | } |
| 1094 | |
Simon Glass | 9f15cc1 | 2018-10-01 12:22:06 -0600 | [diff] [blame] | 1095 | enum uclass_id device_get_uclass_id(const struct udevice *dev) |
Simon Glass | b367053 | 2015-01-25 08:27:04 -0700 | [diff] [blame] | 1096 | { |
| 1097 | return dev->uclass->uc_drv->id; |
| 1098 | } |
Peng Fan | c9cac3f | 2015-02-10 14:46:32 +0800 | [diff] [blame] | 1099 | |
Simon Glass | 9f15cc1 | 2018-10-01 12:22:06 -0600 | [diff] [blame] | 1100 | const char *dev_get_uclass_name(const struct udevice *dev) |
Przemyslaw Marczak | f9c370d | 2015-04-15 13:07:25 +0200 | [diff] [blame] | 1101 | { |
| 1102 | if (!dev) |
| 1103 | return NULL; |
| 1104 | |
| 1105 | return dev->uclass->uc_drv->name; |
| 1106 | } |
| 1107 | |
Simon Glass | 9f15cc1 | 2018-10-01 12:22:06 -0600 | [diff] [blame] | 1108 | bool device_has_children(const struct udevice *dev) |
Simon Glass | c578567 | 2015-03-25 12:21:57 -0600 | [diff] [blame] | 1109 | { |
| 1110 | return !list_empty(&dev->child_head); |
| 1111 | } |
| 1112 | |
Simon Glass | fc347fb | 2020-01-27 08:49:36 -0700 | [diff] [blame] | 1113 | bool device_has_active_children(const struct udevice *dev) |
Simon Glass | c578567 | 2015-03-25 12:21:57 -0600 | [diff] [blame] | 1114 | { |
| 1115 | struct udevice *child; |
| 1116 | |
| 1117 | for (device_find_first_child(dev, &child); |
| 1118 | child; |
| 1119 | device_find_next_child(&child)) { |
| 1120 | if (device_active(child)) |
| 1121 | return true; |
| 1122 | } |
| 1123 | |
| 1124 | return false; |
| 1125 | } |
| 1126 | |
Simon Glass | fc347fb | 2020-01-27 08:49:36 -0700 | [diff] [blame] | 1127 | bool device_is_last_sibling(const struct udevice *dev) |
Simon Glass | c578567 | 2015-03-25 12:21:57 -0600 | [diff] [blame] | 1128 | { |
| 1129 | struct udevice *parent = dev->parent; |
| 1130 | |
| 1131 | if (!parent) |
| 1132 | return false; |
| 1133 | return list_is_last(&dev->sibling_node, &parent->child_head); |
| 1134 | } |
Simon Glass | f5c67ea | 2015-07-30 13:40:39 -0600 | [diff] [blame] | 1135 | |
Simon Glass | a2040fa | 2016-05-01 13:52:23 -0600 | [diff] [blame] | 1136 | void device_set_name_alloced(struct udevice *dev) |
| 1137 | { |
Simon Glass | 73466df | 2020-12-19 10:40:10 -0700 | [diff] [blame] | 1138 | dev_or_flags(dev, DM_FLAG_NAME_ALLOCED); |
Simon Glass | a2040fa | 2016-05-01 13:52:23 -0600 | [diff] [blame] | 1139 | } |
| 1140 | |
Simon Glass | f5c67ea | 2015-07-30 13:40:39 -0600 | [diff] [blame] | 1141 | int device_set_name(struct udevice *dev, const char *name) |
| 1142 | { |
| 1143 | name = strdup(name); |
| 1144 | if (!name) |
| 1145 | return -ENOMEM; |
| 1146 | dev->name = name; |
Simon Glass | a2040fa | 2016-05-01 13:52:23 -0600 | [diff] [blame] | 1147 | device_set_name_alloced(dev); |
Simon Glass | f5c67ea | 2015-07-30 13:40:39 -0600 | [diff] [blame] | 1148 | |
| 1149 | return 0; |
| 1150 | } |
Mugunthan V N | 73443b9 | 2016-04-28 15:36:02 +0530 | [diff] [blame] | 1151 | |
Simon Glass | 12559f5 | 2020-12-22 19:30:27 -0700 | [diff] [blame] | 1152 | void dev_set_priv(struct udevice *dev, void *priv) |
| 1153 | { |
Simon Glass | fb8c9fb | 2020-12-22 19:30:30 -0700 | [diff] [blame] | 1154 | dev->priv_ = priv; |
Simon Glass | 12559f5 | 2020-12-22 19:30:27 -0700 | [diff] [blame] | 1155 | } |
| 1156 | |
| 1157 | void dev_set_parent_priv(struct udevice *dev, void *parent_priv) |
| 1158 | { |
Simon Glass | fb8c9fb | 2020-12-22 19:30:30 -0700 | [diff] [blame] | 1159 | dev->parent_priv_ = parent_priv; |
Simon Glass | 12559f5 | 2020-12-22 19:30:27 -0700 | [diff] [blame] | 1160 | } |
| 1161 | |
| 1162 | void dev_set_uclass_priv(struct udevice *dev, void *uclass_priv) |
| 1163 | { |
Simon Glass | fb8c9fb | 2020-12-22 19:30:30 -0700 | [diff] [blame] | 1164 | dev->uclass_priv_ = uclass_priv; |
Simon Glass | 12559f5 | 2020-12-22 19:30:27 -0700 | [diff] [blame] | 1165 | } |
| 1166 | |
| 1167 | void dev_set_plat(struct udevice *dev, void *plat) |
| 1168 | { |
Simon Glass | fb8c9fb | 2020-12-22 19:30:30 -0700 | [diff] [blame] | 1169 | dev->plat_ = plat; |
Simon Glass | 12559f5 | 2020-12-22 19:30:27 -0700 | [diff] [blame] | 1170 | } |
| 1171 | |
| 1172 | void dev_set_parent_plat(struct udevice *dev, void *parent_plat) |
| 1173 | { |
Simon Glass | fb8c9fb | 2020-12-22 19:30:30 -0700 | [diff] [blame] | 1174 | dev->parent_plat_ = parent_plat; |
Simon Glass | 12559f5 | 2020-12-22 19:30:27 -0700 | [diff] [blame] | 1175 | } |
| 1176 | |
| 1177 | void dev_set_uclass_plat(struct udevice *dev, void *uclass_plat) |
| 1178 | { |
Simon Glass | fb8c9fb | 2020-12-22 19:30:30 -0700 | [diff] [blame] | 1179 | dev->uclass_plat_ = uclass_plat; |
Simon Glass | 12559f5 | 2020-12-22 19:30:27 -0700 | [diff] [blame] | 1180 | } |
| 1181 | |
Simon Glass | 414cc15 | 2021-08-07 07:24:03 -0600 | [diff] [blame] | 1182 | #if CONFIG_IS_ENABLED(OF_REAL) |
Simon Glass | fc347fb | 2020-01-27 08:49:36 -0700 | [diff] [blame] | 1183 | bool device_is_compatible(const struct udevice *dev, const char *compat) |
Mugunthan V N | 73443b9 | 2016-04-28 15:36:02 +0530 | [diff] [blame] | 1184 | { |
Masahiro Yamada | 5ccc2c2 | 2018-04-19 12:14:02 +0900 | [diff] [blame] | 1185 | return ofnode_device_is_compatible(dev_ofnode(dev), compat); |
Mugunthan V N | 73443b9 | 2016-04-28 15:36:02 +0530 | [diff] [blame] | 1186 | } |
| 1187 | |
| 1188 | bool of_machine_is_compatible(const char *compat) |
| 1189 | { |
Patrick Delaunay | bc8e098 | 2022-05-17 14:37:05 +0200 | [diff] [blame] | 1190 | return ofnode_device_is_compatible(ofnode_root(), compat); |
Mugunthan V N | 73443b9 | 2016-04-28 15:36:02 +0530 | [diff] [blame] | 1191 | } |
Mario Six | e4c98a5 | 2018-06-26 08:46:50 +0200 | [diff] [blame] | 1192 | |
| 1193 | int dev_disable_by_path(const char *path) |
| 1194 | { |
| 1195 | struct uclass *uc; |
| 1196 | ofnode node = ofnode_path(path); |
| 1197 | struct udevice *dev; |
| 1198 | int ret = 1; |
| 1199 | |
| 1200 | if (!of_live_active()) |
| 1201 | return -ENOSYS; |
| 1202 | |
Simon Glass | 8a71553 | 2020-12-19 10:40:17 -0700 | [diff] [blame] | 1203 | list_for_each_entry(uc, gd->uclass_root, sibling_node) { |
Mario Six | e4c98a5 | 2018-06-26 08:46:50 +0200 | [diff] [blame] | 1204 | ret = uclass_find_device_by_ofnode(uc->uc_drv->id, node, &dev); |
| 1205 | if (!ret) |
| 1206 | break; |
| 1207 | } |
| 1208 | |
| 1209 | if (ret) |
| 1210 | return ret; |
| 1211 | |
| 1212 | ret = device_remove(dev, DM_REMOVE_NORMAL); |
| 1213 | if (ret) |
| 1214 | return ret; |
| 1215 | |
| 1216 | ret = device_unbind(dev); |
| 1217 | if (ret) |
| 1218 | return ret; |
| 1219 | |
| 1220 | return ofnode_set_enabled(node, false); |
| 1221 | } |
| 1222 | |
| 1223 | int dev_enable_by_path(const char *path) |
| 1224 | { |
| 1225 | ofnode node = ofnode_path(path); |
| 1226 | ofnode pnode = ofnode_get_parent(node); |
| 1227 | struct udevice *parent; |
| 1228 | int ret = 1; |
| 1229 | |
| 1230 | if (!of_live_active()) |
| 1231 | return -ENOSYS; |
| 1232 | |
| 1233 | ret = device_find_by_ofnode(pnode, &parent); |
| 1234 | if (ret) |
| 1235 | return ret; |
| 1236 | |
| 1237 | ret = ofnode_set_enabled(node, true); |
| 1238 | if (ret) |
| 1239 | return ret; |
| 1240 | |
Patrice Chotard | 38f7d3b | 2021-09-10 16:16:20 +0200 | [diff] [blame] | 1241 | return lists_bind_fdt(parent, node, NULL, NULL, false); |
Mario Six | e4c98a5 | 2018-06-26 08:46:50 +0200 | [diff] [blame] | 1242 | } |
Marek Vasut | d7677bf | 2019-08-31 18:03:28 +0200 | [diff] [blame] | 1243 | #endif |
Simon Glass | 6f644ef | 2021-03-15 17:25:37 +1300 | [diff] [blame] | 1244 | |
| 1245 | #if CONFIG_IS_ENABLED(OF_PLATDATA_RT) |
| 1246 | static struct udevice_rt *dev_get_rt(const struct udevice *dev) |
| 1247 | { |
| 1248 | struct udevice *base = ll_entry_start(struct udevice, udevice); |
Simon Glass | cdd73e7 | 2022-03-27 14:26:20 -0600 | [diff] [blame] | 1249 | uint each_size = dm_udevice_size(); |
| 1250 | int idx = ((void *)dev - (void *)base) / each_size; |
Simon Glass | 6f644ef | 2021-03-15 17:25:37 +1300 | [diff] [blame] | 1251 | |
| 1252 | struct udevice_rt *urt = gd_dm_udevice_rt() + idx; |
| 1253 | |
| 1254 | return urt; |
| 1255 | } |
| 1256 | |
| 1257 | u32 dev_get_flags(const struct udevice *dev) |
| 1258 | { |
| 1259 | const struct udevice_rt *urt = dev_get_rt(dev); |
| 1260 | |
| 1261 | return urt->flags_; |
| 1262 | } |
| 1263 | |
| 1264 | void dev_or_flags(const struct udevice *dev, u32 or) |
| 1265 | { |
| 1266 | struct udevice_rt *urt = dev_get_rt(dev); |
| 1267 | |
| 1268 | urt->flags_ |= or; |
| 1269 | } |
| 1270 | |
| 1271 | void dev_bic_flags(const struct udevice *dev, u32 bic) |
| 1272 | { |
| 1273 | struct udevice_rt *urt = dev_get_rt(dev); |
| 1274 | |
| 1275 | urt->flags_ &= ~bic; |
| 1276 | } |
| 1277 | #endif /* OF_PLATDATA_RT */ |