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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>
Mike Frysingere06ab652009-11-03 11:36:39 -050027#include <linux/types.h>
Haavard Skinnemoend25ce7d2008-05-16 11:10:33 +020028
Haavard Skinnemoend25ce7d2008-05-16 11:10:33 +020029struct spi_flash {
30 struct spi_slave *spi;
31
32 const char *name;
33
Mike Frysingerd4aa5002011-04-25 06:58:29 +000034 /* Total flash size */
Haavard Skinnemoend25ce7d2008-05-16 11:10:33 +020035 u32 size;
Mike Frysingerd4aa5002011-04-25 06:58:29 +000036 /* Write (page) size */
37 u32 page_size;
38 /* Erase (sector) size */
Richard Retanubun4e6a5152011-02-16 16:37:22 -050039 u32 sector_size;
40
Haavard Skinnemoend25ce7d2008-05-16 11:10:33 +020041 int (*read)(struct spi_flash *flash, u32 offset,
42 size_t len, void *buf);
43 int (*write)(struct spi_flash *flash, u32 offset,
44 size_t len, const void *buf);
45 int (*erase)(struct spi_flash *flash, u32 offset,
46 size_t len);
47};
48
49struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
50 unsigned int max_hz, unsigned int spi_mode);
51void spi_flash_free(struct spi_flash *flash);
52
53static inline int spi_flash_read(struct spi_flash *flash, u32 offset,
54 size_t len, void *buf)
55{
56 return flash->read(flash, offset, len, buf);
57}
58
59static inline int spi_flash_write(struct spi_flash *flash, u32 offset,
60 size_t len, const void *buf)
61{
62 return flash->write(flash, offset, len, buf);
63}
64
65static inline int spi_flash_erase(struct spi_flash *flash, u32 offset,
66 size_t len)
67{
68 return flash->erase(flash, offset, len);
69}
70
71#endif /* _SPI_FLASH_H_ */