2 * Copyright (C) 2016 Google, Inc
3 * Written by Simon Glass <sjg@chromium.org>
5 * SPDX-License-Identifier: GPL-2.0+
11 #include <dm/device-internal.h>
14 int blk_first_device(int if_type, struct udevice **devp)
16 struct blk_desc *desc;
19 ret = uclass_first_device(UCLASS_BLK, devp);
25 desc = dev_get_uclass_platdata(*devp);
26 if (desc->if_type == if_type)
28 ret = uclass_next_device(devp);
36 int blk_next_device(struct udevice **devp)
38 struct blk_desc *desc;
41 desc = dev_get_uclass_platdata(*devp);
42 if_type = desc->if_type;
44 ret = uclass_next_device(devp);
49 desc = dev_get_uclass_platdata(*devp);
50 if (desc->if_type == if_type)
55 int blk_get_device(int if_type, int devnum, struct udevice **devp)
61 ret = uclass_get(UCLASS_BLK, &uc);
64 uclass_foreach_dev(dev, uc) {
65 struct blk_desc *desc = dev_get_uclass_platdata(dev);
67 debug("%s: if_type=%d, devnum=%d: %s, %d, %d\n", __func__,
68 if_type, devnum, dev->name, desc->if_type, desc->devnum);
69 if (desc->if_type == if_type && desc->devnum == devnum) {
71 return device_probe(dev);
78 unsigned long blk_dread(struct blk_desc *block_dev, lbaint_t start,
79 lbaint_t blkcnt, void *buffer)
81 struct udevice *dev = block_dev->bdev;
82 const struct blk_ops *ops = blk_get_ops(dev);
87 return ops->read(dev, start, blkcnt, buffer);
90 unsigned long blk_dwrite(struct blk_desc *block_dev, lbaint_t start,
91 lbaint_t blkcnt, const void *buffer)
93 struct udevice *dev = block_dev->bdev;
94 const struct blk_ops *ops = blk_get_ops(dev);
99 return ops->write(dev, start, blkcnt, buffer);
102 unsigned long blk_derase(struct blk_desc *block_dev, lbaint_t start,
105 struct udevice *dev = block_dev->bdev;
106 const struct blk_ops *ops = blk_get_ops(dev);
111 return ops->erase(dev, start, blkcnt);
114 int blk_prepare_device(struct udevice *dev)
116 struct blk_desc *desc = dev_get_uclass_platdata(dev);
123 int blk_create_device(struct udevice *parent, const char *drv_name,
124 const char *name, int if_type, int devnum, int blksz,
125 lbaint_t size, struct udevice **devp)
127 struct blk_desc *desc;
131 ret = device_bind_driver(parent, drv_name, name, &dev);
134 desc = dev_get_uclass_platdata(dev);
135 desc->if_type = if_type;
137 desc->lba = size / blksz;
138 desc->part_type = PART_TYPE_UNKNOWN;
140 desc->devnum = devnum;
146 int blk_unbind_all(int if_type)
149 struct udevice *dev, *next;
152 ret = uclass_get(UCLASS_BLK, &uc);
155 uclass_foreach_dev_safe(dev, next, uc) {
156 struct blk_desc *desc = dev_get_uclass_platdata(dev);
158 if (desc->if_type == if_type) {
159 ret = device_remove(dev);
162 ret = device_unbind(dev);
171 UCLASS_DRIVER(blk) = {
174 .per_device_platdata_auto_alloc_size = sizeof(struct blk_desc),