1d25ce7d2SHaavard Skinnemoen /* 2d25ce7d2SHaavard Skinnemoen * Interface to SPI flash 3d25ce7d2SHaavard Skinnemoen * 4d25ce7d2SHaavard Skinnemoen * Copyright (C) 2008 Atmel Corporation 5d25ce7d2SHaavard Skinnemoen * 6d25ce7d2SHaavard Skinnemoen * See file CREDITS for list of people who contributed to this 7d25ce7d2SHaavard Skinnemoen * project. 8d25ce7d2SHaavard Skinnemoen * 9d25ce7d2SHaavard Skinnemoen * This program is free software; you can redistribute it and/or 10d25ce7d2SHaavard Skinnemoen * modify it under the terms of the GNU General Public License 11d25ce7d2SHaavard Skinnemoen * version 2 as published by the Free Software Foundation. 12d25ce7d2SHaavard Skinnemoen * 13d25ce7d2SHaavard Skinnemoen * This program is distributed in the hope that it will be useful, 14d25ce7d2SHaavard Skinnemoen * but WITHOUT ANY WARRANTY; without even the implied warranty of 15d25ce7d2SHaavard Skinnemoen * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16d25ce7d2SHaavard Skinnemoen * GNU General Public License for more details. 17d25ce7d2SHaavard Skinnemoen * 18d25ce7d2SHaavard Skinnemoen * You should have received a copy of the GNU General Public License 19d25ce7d2SHaavard Skinnemoen * along with this program; if not, write to the Free Software 20d25ce7d2SHaavard Skinnemoen * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21d25ce7d2SHaavard Skinnemoen * MA 02111-1307 USA 22d25ce7d2SHaavard Skinnemoen */ 23d25ce7d2SHaavard Skinnemoen #ifndef _SPI_FLASH_H_ 24d25ce7d2SHaavard Skinnemoen #define _SPI_FLASH_H_ 25d25ce7d2SHaavard Skinnemoen 26d25ce7d2SHaavard Skinnemoen #include <spi.h> 27*e06ab654SMike Frysinger #include <linux/types.h> 28d25ce7d2SHaavard Skinnemoen 29d25ce7d2SHaavard Skinnemoen struct spi_flash_region { 30d25ce7d2SHaavard Skinnemoen unsigned int count; 31d25ce7d2SHaavard Skinnemoen unsigned int size; 32d25ce7d2SHaavard Skinnemoen }; 33d25ce7d2SHaavard Skinnemoen 34d25ce7d2SHaavard Skinnemoen struct spi_flash { 35d25ce7d2SHaavard Skinnemoen struct spi_slave *spi; 36d25ce7d2SHaavard Skinnemoen 37d25ce7d2SHaavard Skinnemoen const char *name; 38d25ce7d2SHaavard Skinnemoen 39d25ce7d2SHaavard Skinnemoen u32 size; 40d25ce7d2SHaavard Skinnemoen 41d25ce7d2SHaavard Skinnemoen int (*read)(struct spi_flash *flash, u32 offset, 42d25ce7d2SHaavard Skinnemoen size_t len, void *buf); 43d25ce7d2SHaavard Skinnemoen int (*write)(struct spi_flash *flash, u32 offset, 44d25ce7d2SHaavard Skinnemoen size_t len, const void *buf); 45d25ce7d2SHaavard Skinnemoen int (*erase)(struct spi_flash *flash, u32 offset, 46d25ce7d2SHaavard Skinnemoen size_t len); 47d25ce7d2SHaavard Skinnemoen }; 48d25ce7d2SHaavard Skinnemoen 49d25ce7d2SHaavard Skinnemoen struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, 50d25ce7d2SHaavard Skinnemoen unsigned int max_hz, unsigned int spi_mode); 51d25ce7d2SHaavard Skinnemoen void spi_flash_free(struct spi_flash *flash); 52d25ce7d2SHaavard Skinnemoen 53d25ce7d2SHaavard Skinnemoen static inline int spi_flash_read(struct spi_flash *flash, u32 offset, 54d25ce7d2SHaavard Skinnemoen size_t len, void *buf) 55d25ce7d2SHaavard Skinnemoen { 56d25ce7d2SHaavard Skinnemoen return flash->read(flash, offset, len, buf); 57d25ce7d2SHaavard Skinnemoen } 58d25ce7d2SHaavard Skinnemoen 59d25ce7d2SHaavard Skinnemoen static inline int spi_flash_write(struct spi_flash *flash, u32 offset, 60d25ce7d2SHaavard Skinnemoen size_t len, const void *buf) 61d25ce7d2SHaavard Skinnemoen { 62d25ce7d2SHaavard Skinnemoen return flash->write(flash, offset, len, buf); 63d25ce7d2SHaavard Skinnemoen } 64d25ce7d2SHaavard Skinnemoen 65d25ce7d2SHaavard Skinnemoen static inline int spi_flash_erase(struct spi_flash *flash, u32 offset, 66d25ce7d2SHaavard Skinnemoen size_t len) 67d25ce7d2SHaavard Skinnemoen { 68d25ce7d2SHaavard Skinnemoen return flash->erase(flash, offset, len); 69d25ce7d2SHaavard Skinnemoen } 70d25ce7d2SHaavard Skinnemoen 71d25ce7d2SHaavard Skinnemoen #endif /* _SPI_FLASH_H_ */ 72