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_ */ 71