mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 21:24:00 +08:00
ae02ab00aa
Add a driver for NAND devices connected to the NEMC on JZ4780 SoCs, as well as the hardware BCH controller. DMA is not currently implemented. While older 47xx SoCs also have a BCH controller, they are incompatible with the one in the 4780 due to differing register/bit positions, which would make implementing a common driver for them quite messy. Signed-off-by: Alex Smith <alex.smith@imgtec.com> Cc: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: linux-mtd@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Harvey Hunt <harvey.hunt@imgtec.com> Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com> [Brian: fixed a few small mistakes] Signed-off-by: Brian Norris <computersforpeace@gmail.com>
44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/*
|
|
* JZ4780 BCH controller
|
|
*
|
|
* Copyright (c) 2015 Imagination Technologies
|
|
* Author: Alex Smith <alex.smith@imgtec.com>
|
|
*
|
|
* 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 __DRIVERS_MTD_NAND_JZ4780_BCH_H__
|
|
#define __DRIVERS_MTD_NAND_JZ4780_BCH_H__
|
|
|
|
#include <linux/types.h>
|
|
|
|
struct device;
|
|
struct device_node;
|
|
struct jz4780_bch;
|
|
|
|
/**
|
|
* struct jz4780_bch_params - BCH parameters
|
|
* @size: data bytes per ECC step.
|
|
* @bytes: ECC bytes per step.
|
|
* @strength: number of correctable bits per ECC step.
|
|
*/
|
|
struct jz4780_bch_params {
|
|
int size;
|
|
int bytes;
|
|
int strength;
|
|
};
|
|
|
|
int jz4780_bch_calculate(struct jz4780_bch *bch,
|
|
struct jz4780_bch_params *params,
|
|
const u8 *buf, u8 *ecc_code);
|
|
int jz4780_bch_correct(struct jz4780_bch *bch,
|
|
struct jz4780_bch_params *params, u8 *buf,
|
|
u8 *ecc_code);
|
|
|
|
void jz4780_bch_release(struct jz4780_bch *bch);
|
|
struct jz4780_bch *of_jz4780_bch_get(struct device_node *np);
|
|
|
|
#endif /* __DRIVERS_MTD_NAND_JZ4780_BCH_H__ */
|