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Haavard Skinnemoend25ce7d2008-05-16 11:10:33 +02001/*
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
28struct spi_flash_region {
29 unsigned int count;
30 unsigned int size;
31};
32
33struct 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
48struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
49 unsigned int max_hz, unsigned int spi_mode);
50void spi_flash_free(struct spi_flash *flash);
51
52static 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
58static 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
64static 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_ */