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/*
* Freescale STMP37XX/STMP378X GPMI (General-Purpose-Media-Interface)
*
* Author: dmitry pervushin <dimka@embeddedalley.com>
*
* Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
* Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved.
*/
/*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#ifndef __DRIVERS_GPMI_H
#define __DRIVERS_GPMI_H
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/platform_device.h>
#include <linux/uaccess.h>
#include <mach/stmp3xxx.h>
#include <mach/dma.h>
#include <mach/gpmi.h>
#include <mach/regs-gpmi.h>
#include <mach/regs-apbh.h>
#ifdef CONFIG_MTD_NAND_GPMI_BCH
#include <mach/regs-bch.h>
#endif
struct gpmi_nand_timing {
u8 data_setup;
u8 data_hold;
u8 address_setup;
u8 dsample_time;
};
#define GPMI_DMA_MAX_CHAIN 20 /* max DMA commands in chain */
#define GPMI_CMD_BUF_SZ 10
#define GPMI_DATA_BUF_SZ 4096
#define GPMI_WRITE_BUF_SZ 4096
#define GPMI_OOB_BUF_SZ 218
struct gpmi_perchip_data {
int valid;
struct nand_chip chip;
struct platform_device *dev;
int index;
spinlock_t lock; /* protect chain operations */
struct stmp37xx_circ_dma_chain chain;
struct stmp3xxx_dma_descriptor d[GPMI_DMA_MAX_CHAIN];
int d_tail;
struct completion done;
u8 *cmd_buffer;
dma_addr_t cmd_buffer_handle;
int cmd_buffer_size, cmd_buffer_sz;
u8 *cmdtail_buffer;
dma_addr_t cmdtail_buffer_handle;
int cmdtail_buffer_size, cmdtail_buffer_sz;
u8 *write_buffer;
dma_addr_t write_buffer_handle;
int write_buffer_size, write_buffer_sz;
u8 *data_buffer;
dma_addr_t data_buffer_handle;
u8 *data_buffer_cptr;
int data_buffer_size, data_buffer_sz, bytes2read;
u8 *oob_buffer;
dma_addr_t oob_buffer_handle;
int oob_buffer_size;
int cs;
unsigned dma_ch;
int ecc_oob_bytes, oob_free;
struct gpmi_nand_timing timing;
void *p2w, *oob2w, *p2r, *oob2r;
size_t p2w_size, oob2w_size, p2r_size, oob2r_size;
dma_addr_t p2w_dma, oob2w_dma, p2r_dma, oob2r_dma;
unsigned read_memcpy:1, write_memcpy:1,
read_oob_memcpy:1, write_oob_memcpy:1;
};
extern struct gpmi_nand_timing gpmi_safe_timing;
#endif
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