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mtd: nand: mxs_nand: introduce SPL specific init

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In preparation to convert the driver to use NAND self init
provide a new minimal init for SPL builds. As a side effect
this also reduces size of SPL by about 4KiB.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
This commit is contained in:
Stefan Agner 2018-06-22 17:19:46 +02:00 committed by Stefano Babic
parent 51f957adf7
commit 9345943b2b
3 changed files with 55 additions and 1 deletions
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43
drivers/mtd/nand/mxs_nand.c
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@ -25,6 +25,7 @@
#include <asm/mach-imx/regs-gpmi.h>
#include <asm/arch/sys_proto.h>
#include <asm/mach-imx/dma.h>
#include "mxs_nand.h"
#define MXS_NAND_DMA_DESCRIPTOR_COUNT 4
@ -1149,6 +1150,48 @@ err1:
return ret;
}
int mxs_nand_init_spl(struct nand_chip *nand)
{
struct mxs_nand_info *nand_info;
int err;
nand_info = malloc(sizeof(struct mxs_nand_info));
if (!nand_info) {
printf("MXS NAND: Failed to allocate private data\n");
return -ENOMEM;
}
memset(nand_info, 0, sizeof(struct mxs_nand_info));
err = mxs_nand_alloc_buffers(nand_info);
if (err)
return err;
err = mxs_nand_init(nand_info);
if (err)
return err;
nand_set_controller_data(nand, nand_info);
nand->options |= NAND_NO_SUBPAGE_WRITE;
nand->cmd_ctrl = mxs_nand_cmd_ctrl;
nand->dev_ready = mxs_nand_device_ready;
nand->select_chip = mxs_nand_select_chip;
nand->scan_bbt = mxs_nand_scan_bbt;
nand->read_byte = mxs_nand_read_byte;
nand->read_buf = mxs_nand_read_buf;
nand->ecc.read_page = mxs_nand_ecc_read_page;
nand->ecc.mode = NAND_ECC_HW;
nand->ecc.bytes = 9;
nand->ecc.size = 512;
nand->ecc.strength = 8;
return 0;
}
/*!
* This function is called during the driver binding process.
*

10
drivers/mtd/nand/mxs_nand.h Normal file
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@ -0,0 +1,10 @@
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* NXP GPMI NAND flash driver
*
* Copyright (C) 2018 Toradex
* Authors:
* Stefan Agner <stefan.agner@toradex.com>
*/
int mxs_nand_init_spl(struct nand_chip *nand);

3
drivers/mtd/nand/mxs_nand_spl.c
View File

@ -6,6 +6,7 @@
#include <common.h>
#include <nand.h>
#include <malloc.h>
#include "mxs_nand.h"
static struct mtd_info *mtd;
static struct nand_chip nand_chip;
@ -145,7 +146,7 @@ static int mxs_nand_init(void)
return 0;
/* init mxs nand driver */
board_nand_init(&nand_chip);
mxs_nand_init_spl(&nand_chip);
mtd = nand_to_mtd(&nand_chip);
/* set mtd functions */
nand_chip.cmdfunc = mxs_nand_command;