| /** |
| * @file |
| * @brief This file contains exported structure for NAND |
| * |
| * FileName: include/asm-arm/arch-omap/gpmc_nand.h |
| * |
| * OMAP's General Purpose Memory Controller (GPMC) has a NAND controller |
| * embedded. this file provides the platform data structure required to |
| * hook on to it. |
| * |
| */ |
| /* |
| * (C) Copyright 2008 |
| * Texas Instruments, <www.ti.com> |
| * Nishanth Menon <x0nishan@ti.com> |
| * |
| * Originally from Linux kernel: |
| * http://linux.omap.com/pub/kernel/3430zoom/linux-ldp-v1.3.tar.gz |
| * include/asm-arm/arch-omap/nand.h |
| * |
| * Copyright (C) 2006 Micron Technology Inc. |
| * Author: Shahrom Sharif-Kashani |
| * |
| * 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. |
| */ |
| |
| #ifndef __ASM_OMAP_NAND_GPMC_H |
| #define __ASM_OMAP_NAND_GPMC_H |
| |
| #include <linux/mtd/mtd.h> |
| #include <linux/mtd/nand.h> |
| #include <linux/mtd/nand_ecc.h> |
| |
| enum gpmc_ecc_mode { |
| OMAP_ECC_SOFT, |
| OMAP_ECC_HAMMING_CODE_HW_ROMCODE, |
| OMAP_ECC_BCH4_CODE_HW, |
| OMAP_ECC_BCH8_CODE_HW, |
| OMAP_ECC_BCH8_CODE_HW_ROMCODE, |
| }; |
| |
| /** omap nand platform data structure */ |
| struct gpmc_nand_platform_data { |
| /** Chip select you want to use */ |
| int cs; |
| struct mtd_partition *parts; |
| int nr_parts; |
| /** If there are any special setups you'd want to do */ |
| int (*nand_setup) (struct gpmc_nand_platform_data *); |
| |
| /** set up if we want H/w ECC here and other |
| * platform specific configs here |
| */ |
| unsigned short plat_options; |
| /** ecc mode to use */ |
| enum gpmc_ecc_mode ecc_mode; |
| /** setup any special options */ |
| unsigned int options; |
| /** set up device access as 8,16 as per GPMC config */ |
| char device_width; |
| /** Set this to WAITx+1, so GPMC WAIT0 will be 1 and so on. */ |
| char wait_mon_pin; |
| /** Set this to the max timeout for the device */ |
| uint64_t max_timeout; |
| |
| /* if you like a custom oob use this. */ |
| struct nand_ecclayout *oob; |
| /** platform specific private data */ |
| void *priv; |
| }; |
| |
| /** Platform specific options definitions */ |
| /** plat_options: Wait montioring pin low */ |
| #define NAND_WAITPOL_LOW (0 << 0) |
| /** plat_options: Wait montioring pin high */ |
| #define NAND_WAITPOL_HIGH (1 << 0) |
| #define NAND_WAITPOL_MASK (1 << 0) |
| |
| int gpmc_generic_nand_devices_init(int cs, int width, enum gpmc_ecc_mode); |
| |
| #endif /* __ASM_OMAP_NAND_GPMC_H */ |
