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1 | /* |
2 | * Interface to SPI flash | |
3 | * | |
4 | * Copyright (C) 2008 Atmel Corporation | |
5 | * | |
6 | * See file CREDITS for list of people who contributed to this | |
7 | * project. | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License | |
11 | * version 2 as published by the Free Software Foundation. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
21 | * MA 02111-1307 USA | |
22 | */ | |
23 | #ifndef _SPI_FLASH_H_ | |
24 | #define _SPI_FLASH_H_ | |
25 | ||
26 | #include <spi.h> | |
27 | ||
28 | struct spi_flash_region { | |
29 | unsigned int count; | |
30 | unsigned int size; | |
31 | }; | |
32 | ||
33 | struct spi_flash { | |
34 | struct spi_slave *spi; | |
35 | ||
36 | const char *name; | |
37 | ||
38 | u32 size; | |
39 | ||
40 | int (*read)(struct spi_flash *flash, u32 offset, | |
41 | size_t len, void *buf); | |
42 | int (*write)(struct spi_flash *flash, u32 offset, | |
43 | size_t len, const void *buf); | |
44 | int (*erase)(struct spi_flash *flash, u32 offset, | |
45 | size_t len); | |
46 | }; | |
47 | ||
48 | struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, | |
49 | unsigned int max_hz, unsigned int spi_mode); | |
50 | void spi_flash_free(struct spi_flash *flash); | |
51 | ||
52 | static inline int spi_flash_read(struct spi_flash *flash, u32 offset, | |
53 | size_t len, void *buf) | |
54 | { | |
55 | return flash->read(flash, offset, len, buf); | |
56 | } | |
57 | ||
58 | static inline int spi_flash_write(struct spi_flash *flash, u32 offset, | |
59 | size_t len, const void *buf) | |
60 | { | |
61 | return flash->write(flash, offset, len, buf); | |
62 | } | |
63 | ||
64 | static inline int spi_flash_erase(struct spi_flash *flash, u32 offset, | |
65 | size_t len) | |
66 | { | |
67 | return flash->erase(flash, offset, len); | |
68 | } | |
69 | ||
70 | #endif /* _SPI_FLASH_H_ */ |