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 #include <linux/types.h> 28 29 struct spi_flash { 30 struct spi_slave *spi; 31 32 const char *name; 33 34 u32 size; 35 36 u32 sector_size; 37 38 int (*read)(struct spi_flash *flash, u32 offset, 39 size_t len, void *buf); 40 int (*write)(struct spi_flash *flash, u32 offset, 41 size_t len, const void *buf); 42 int (*erase)(struct spi_flash *flash, u32 offset, 43 size_t len); 44 }; 45 46 struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, 47 unsigned int max_hz, unsigned int spi_mode); 48 void spi_flash_free(struct spi_flash *flash); 49 50 static inline int spi_flash_read(struct spi_flash *flash, u32 offset, 51 size_t len, void *buf) 52 { 53 return flash->read(flash, offset, len, buf); 54 } 55 56 static inline int spi_flash_write(struct spi_flash *flash, u32 offset, 57 size_t len, const void *buf) 58 { 59 return flash->write(flash, offset, len, buf); 60 } 61 62 static inline int spi_flash_erase(struct spi_flash *flash, u32 offset, 63 size_t len) 64 { 65 return flash->erase(flash, offset, len); 66 } 67 68 #endif /* _SPI_FLASH_H_ */ 69