/* * Interface to SPI flash * * Copyright (C) 2008 Atmel Corporation * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #ifndef _SPI_FLASH_H_ #define _SPI_FLASH_H_ #include <spi.h> #include <linux/types.h> #include <linux/compiler.h> struct spi_flash { struct spi_slave *spi; const char *name; /* Total flash size */ u32 size; /* Write (page) size */ u32 page_size; /* Erase (sector) size */ u32 sector_size; int (*read)(struct spi_flash *flash, u32 offset, size_t len, void *buf); int (*write)(struct spi_flash *flash, u32 offset, size_t len, const void *buf); int (*erase)(struct spi_flash *flash, u32 offset, size_t len); }; struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, unsigned int max_hz, unsigned int spi_mode); void spi_flash_free(struct spi_flash *flash); static inline int spi_flash_read(struct spi_flash *flash, u32 offset, size_t len, void *buf) { return flash->read(flash, offset, len, buf); } static inline int spi_flash_write(struct spi_flash *flash, u32 offset, size_t len, const void *buf) { return flash->write(flash, offset, len, buf); } static inline int spi_flash_erase(struct spi_flash *flash, u32 offset, size_t len) { return flash->erase(flash, offset, len); } void spi_boot(void) __noreturn; #endif /* _SPI_FLASH_H_ */