2  * Copyright (c) 2006-2018, RT-Thread Development Team
4  * SPDX-License-Identifier: Apache-2.0
8    2018-09-10     heyuanjie87   first version
20         goto out;  in mtd_part_alloc()
22     slave->master = master;  in mtd_part_alloc()
25     slave->size = part->size;  in mtd_part_alloc()
26     slave->offset = part->offset;  in mtd_part_alloc()
28 out:  in mtd_part_alloc()
41     if (mtd->parent.type != RT_Device_Class_MTD)  in rt_mtd_get()
51  * @np number of partitions
52  * @return number of unregistered partitions
60     master->master = master;  in rt_mtd_register()
61     master->parent.type = RT_Device_Class_MTD;  in rt_mtd_register()
65         master->offset = parts->offset;  in rt_mtd_register()
66         master->size = parts->size;  in rt_mtd_register()
68         ret = rt_device_register((rt_device_t)master, parts->name, 0);  in rt_mtd_register()
72         np --;  in rt_mtd_register()
81         ret = rt_device_register((rt_device_t)slave, parts->name, 0);  in rt_mtd_register()
85         np --;  in rt_mtd_register()
97     total_blks = mtd->size/mtd->block_size;  in rt_mtd_block_erase()
99         return -EINVAL;  in rt_mtd_block_erase()
100     addr = mtd->offset + mtd->block_size * block;  in rt_mtd_block_erase()
102     return mtd->ops->erase(mtd->master, addr, mtd->block_size);  in rt_mtd_block_erase()
109     if (!mtd->ops->isbad)  in rt_mtd_block_isbad()
112     total_blks = mtd->size / mtd->block_size;  in rt_mtd_block_isbad()
114         return -EINVAL;  in rt_mtd_block_isbad()
115     offset_blk = mtd->offset / mtd->block_size;  in rt_mtd_block_isbad()
117     return mtd->ops->isbad(mtd->master, block + offset_blk);  in rt_mtd_block_isbad()
124     if (!mtd->ops->markbad)  in rt_mtd_block_markbad()
125         return -EOPNOTSUPP;  in rt_mtd_block_markbad()
127     total_blks = mtd->size / mtd->block_size;  in rt_mtd_block_markbad()
129         return -EINVAL;  in rt_mtd_block_markbad()
130     offset_blk = mtd->offset / mtd->block_size;  in rt_mtd_block_markbad()
132     return mtd->ops->markbad(mtd->master, block + offset_blk);  in rt_mtd_block_markbad()
137     if (addr > mtd->size || (addr + size) > mtd->size)  in rt_mtd_erase()
138         return -EINVAL;  in rt_mtd_erase()
139     addr += mtd->offset;  in rt_mtd_erase()
141     return mtd->ops->erase(mtd->master, addr, size);  in rt_mtd_erase()
155     if (from < 0 || from >= (loff_t)mtd->size || len > mtd->size - from)  in rt_mtd_read()
156         return -EINVAL;  in rt_mtd_read()
162     ret = mtd->ops->read(mtd->master, from + mtd->offset, &desc);  in rt_mtd_read()
180     if (to < 0 || to >= (loff_t)mtd->size || len > mtd->size - to)  in rt_mtd_write()
181         return -EINVAL;  in rt_mtd_write()
182     if (!mtd->ops->write)  in rt_mtd_write()
183         return -EROFS;  in rt_mtd_write()
189     ret = mtd->ops->write(mtd->master, to + mtd->offset, &desc);  in rt_mtd_write()
197 * Read data and/or out-of-band
205     desc->datretlen = 0;  in rt_mtd_read_oob()
206     desc->oobretlen = 0;  in rt_mtd_read_oob()
208     if (from < 0 || from >= (loff_t)mtd->size)  in rt_mtd_read_oob()
209         return -EINVAL;  in rt_mtd_read_oob()
211     if (desc->datbuf && (desc->datlen > (mtd->size - from)))  in rt_mtd_read_oob()
212         return -EINVAL;  in rt_mtd_read_oob()
214     return mtd->ops->read(mtd->master, from + mtd->offset, desc);  in rt_mtd_read_oob()
218 * Write data and/or out-of-band
226     desc->datretlen = 0;  in rt_mtd_write_oob()
227     desc->oobretlen = 0;  in rt_mtd_write_oob()
229     if (to < 0 || to >= (loff_t)mtd->size)  in rt_mtd_write_oob()
230         return -EINVAL;  in rt_mtd_write_oob()
232     if (desc->datbuf && (desc->datlen >(mtd->size - to)))  in rt_mtd_write_oob()
233         return -EINVAL;  in rt_mtd_write_oob()
235     return mtd->ops->write(mtd->master, to + mtd->offset, desc);  in rt_mtd_write_oob()